Correct does_field_type_allow_using

ZLIB: Fix edge case where initial buffer < 258 bytes.

.gitattributes

@@ -0,0 +1 @@
+*.odin linguist-language=Odin

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+patreon: gingerbill

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,39 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+## Context
+
+Please provide any relevant information about your setup. This is important in case the issue is not reproducible except for under certain conditions.
+
+* Operating System:
+* Please paste `odin version` output:
+
+## Expected Behavior
+
+Please describe the behavior you are expecting
+
+## Current Behavior
+
+What is the current behavior?
+
+## Failure Information (for bugs)
+
+Please help provide information about the failure if this is a bug. If it is not a bug, please remove the rest of this template.
+
+### Steps to Reproduce
+
+Please provide detailed steps for reproducing the issue.
+
+1. step 1
+2. step 2
+3. you get it...
+
+### Failure Logs
+
+Please include any relevant log snippets or files here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,19 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+# PLEASE POST THIS IN THE DISCUSSION TAB UNDER "PROPOSALS" OR "IDEAS/REQUESTS"
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/ci.yml

@@ -0,0 +1,59 @@
+name: CI
+on: [push, pull_request]
+
+jobs:
+  build_linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Download LLVM
+        run: sudo apt-get install llvm-11 clang-11 llvm
+      - name: build odin
+        run: make release
+      - name: Odin run
+        run: ./odin run examples/demo/demo.odin
+      - name: Odin check
+        run: ./odin check examples/demo/demo.odin -vet
+      - name: Odin version
+        run: ./odin version
+  build_macOS:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Download LLVM and setup PATH
+        run: |
+          brew install llvm@11
+          echo "/usr/local/opt/llvm@11/bin" >> $GITHUB_PATH
+          TMP_PATH=$(xcrun --show-sdk-path)/user/include
+          echo "CPATH=$TMP_PATH" >> $GITHUB_ENV
+      - name: build odin
+        run: make release
+      - name: Odin run
+        run: ./odin run examples/demo/demo.odin
+      - name: Odin check
+        run: ./odin check examples/demo/demo.odin -vet
+      - name: Odin version
+        run: ./odin version
+  build_windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: build Odin
+        shell: cmd
+        run: |
+          call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat
+          ./build.bat 1
+      - name: Odin run
+        shell: cmd
+        run: |
+          call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat
+          odin run examples/demo/demo.odin
+      - name: Odin check
+        shell: cmd
+        run: |
+          call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat
+          odin check examples/demo/demo.odin -vet
+      - name: Odin version
+        run: ./odin version
+
+

.github/workflows/nightly.yml

@@ -0,0 +1,139 @@
+name:  Nightly
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: 0 20 * * *
+
+jobs:
+  build_windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: build Odin
+        shell: cmd
+        run: |
+          call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat
+          ./build.bat 1 1
+      - name: Odin run
+        shell: cmd
+        run: |
+          call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat
+          odin run examples/demo/demo.odin
+      - name: Copy artifacts
+        run: |
+          rm bin/llvm/windows/LLVM-C.lib
+          mkdir dist
+          cp odin.exe dist
+          cp LLVM-C.dll dist
+          cp -r shared dist
+          cp -r core dist
+          cp -r bin dist
+          cp -r examples dist
+      - name: Upload artifact
+        uses: actions/upload-artifact@v1
+        with:
+          name: windows_artifacts
+          path: dist
+  build_ubuntu:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: (Linux) Download LLVM
+        run: sudo apt-get install llvm-11 clang-11 llvm
+      - name: build odin
+        run: make nightly
+      - name: Odin run
+        run: ./odin run examples/demo/demo.odin
+      - name: Copy artifacts
+        run: |
+          mkdir dist
+          cp odin dist
+          cp -r shared dist
+          cp -r core dist
+          cp -r examples dist
+      - name: Upload artifact
+        uses: actions/upload-artifact@v1
+        with:
+          name: ubuntu_artifacts
+          path: dist
+  build_macos:
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Download LLVM and setup PATH
+        run: |
+          brew install llvm@11
+          echo "/usr/local/opt/llvm@11/bin" >> $GITHUB_PATH
+          TMP_PATH=$(xcrun --show-sdk-path)/user/include
+          echo "CPATH=$TMP_PATH" >> $GITHUB_ENV
+      - name: build odin
+        run: make nightly
+      - name: Odin run
+        run: ./odin run examples/demo/demo.odin
+      - name: Copy artifacts
+        run: |
+          mkdir dist
+          cp odin dist
+          cp -r shared dist
+          cp -r core dist
+          cp -r examples dist
+      - name: Upload artifact
+        uses: actions/upload-artifact@v1
+        with:
+          name: macos_artifacts
+          path: dist
+  upload_b2:
+    runs-on: [ubuntu-latest]
+    needs: [build_windows, build_macos, build_ubuntu]
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: Install B2 CLI
+        shell: bash
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade b2
+
+      - name: Display Python version
+        run: python -c "import sys; print(sys.version)"
+
+      - name: Download Windows artifacts
+        uses: actions/download-artifact@v1
+        with:
+          name: windows_artifacts
+
+      - name: Download Ubuntu artifacts
+        uses: actions/download-artifact@v1
+        with:
+          name: ubuntu_artifacts
+
+      - name: Download macOS artifacts
+        uses: actions/download-artifact@v1
+        with:
+          name: macos_artifacts
+
+      - name: Create archives and upload
+        shell: bash
+        env:
+          APPID: ${{ secrets.B2_APPID }}
+          APPKEY: ${{ secrets.B2_APPKEY }}
+          BUCKET: ${{ secrets.B2_BUCKET }}
+          DAYS_TO_KEEP: ${{ secrets.B2_DAYS_TO_KEEP }}
+        run: |
+          b2 authorize-account "$APPID" "$APPKEY"
+
+          chmod +x ./ci/upload_create_nightly.sh
+          ./ci/upload_create_nightly.sh "$BUCKET" windows-amd64 windows_artifacts/
+          ./ci/upload_create_nightly.sh "$BUCKET" ubuntu-amd64 ubuntu_artifacts/
+          ./ci/upload_create_nightly.sh "$BUCKET" macos-amd64 macos_artifacts/
+
+          python3 ci/delete_old_binaries.py "$BUCKET" "$DAYS_TO_KEEP"
+
+          python3 ci/create_nightly_json.py "$BUCKET" > nightly.json
+          b2 upload-file "$BUCKET" nightly.json nightly.json
+
+          b2 clear-account

.gitignore

@@ -18,11 +18,14 @@ bld/
 [Bb]in/
 [Oo]bj/
 [Ll]og/
-
+![Cc]ore/[Ll]og/
 # Visual Studio 2015 cache/options directory
 .vs/
+# Visual Studio Code options directory
+.vscode/
 # Uncomment if you have tasks that create the project's static files in wwwroot
 #wwwroot/
+demo
 
 # MSTest test Results
 [Tt]est[Rr]esult*/
@@ -264,10 +267,12 @@ bin/
 odin
 odin.dSYM
 
-
 # shared collection
 shared/
 
 # temp files
 * .ll
 *.bc
+*.ll
+
+*.sublime-workspace

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2016-2017 Ginger Bill. All rights reserved.
+Copyright (c) 2016-2021 Ginger Bill. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

Makefile

@@ -1,24 +1,53 @@
-DISABLED_WARNINGS=-Wno-switch -Wno-writable-strings -Wno-tautological-compare -Wno-macro-redefined #-Wno-pointer-sign -Wno-tautological-constant-out-of-range-compare  
+GIT_SHA=$(shell git rev-parse --short HEAD)
+DISABLED_WARNINGS=-Wno-switch -Wno-pointer-sign -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare -Wno-macro-redefined
 LDFLAGS=-pthread -ldl -lm -lstdc++
-CFLAGS=-std=c++11
+CFLAGS=-std=c++14 -DGIT_SHA=\"$(GIT_SHA)\"
+CFLAGS:=$(CFLAGS) -DODIN_VERSION_RAW=\"dev-$(shell date +"%Y-%m")\"
 CC=clang
 
 OS=$(shell uname)
 
-ifeq ($(OS), DARWIN)
-	LDFLAGS=$(LDFLAGS) -liconv
+ifeq ($(OS), Darwin)
+    LLVM_CONFIG=llvm-config
+    ifneq ($(shell llvm-config --version | grep '^11\.'),)
+        LLVM_CONFIG=llvm-config
+    else
+        $(error "Requirement: llvm-config must be version 11")
+    endif
+
+    LDFLAGS:=$(LDFLAGS) -liconv
+    CFLAGS:=$(CFLAGS) $(shell $(LLVM_CONFIG) --cxxflags --ldflags)
+    LDFLAGS:=$(LDFLAGS) -lLLVM-C
+endif
+ifeq ($(OS), Linux)
+    LLVM_CONFIG=llvm-config-11
+    ifneq ($(shell which llvm-config-11 2>/dev/null),)
+        LLVM_CONFIG=llvm-config-11
+    else
+        ifneq ($(shell llvm-config --version | grep '^11\.'),)
+            LLVM_CONFIG=llvm-config
+        else
+            $(error "Requirement: llvm-config must be version 11")
+        endif
+    endif
+
+    CFLAGS:=$(CFLAGS) $(shell $(LLVM_CONFIG) --cxxflags --ldflags)
+    LDFLAGS:=$(LDFLAGS) $(shell $(LLVM_CONFIG) --libs core native --system-libs)
 endif
 
 all: debug demo
 
 demo:
-	./odin run examples/demo.odin
+	./odin run examples/demo/demo.odin
 
 debug:
 	$(CC) src/main.cpp $(DISABLED_WARNINGS) $(CFLAGS) -g $(LDFLAGS) -o odin
 
 release:
 	$(CC) src/main.cpp $(DISABLED_WARNINGS) $(CFLAGS) -O3 -march=native $(LDFLAGS) -o odin
-	
 
-	
+nightly:
+	$(CC) src/main.cpp $(DISABLED_WARNINGS) $(CFLAGS) -DNIGHTLY -O3 $(LDFLAGS) -o odin
+
+
+

PROPOSAL-PROCESS.md

@@ -0,0 +1,64 @@
+# The Proposal Process
+
+## Introduction
+
+The Odin project's development process is driven by design and pragmatism. Significant changes to the language, libraries, or tools _must_ be first discussed, and maybe formally documented, before they can be implemented.
+
+This document describes the process for proposing, documenting, and implementing changes to the Odin project.
+
+## The Proposal Process
+
+The proposal process is the process for reviewing a proposal and reaching a decision about whether to accept or decline the proposal.
+
+1. [Ginger Bill](https://github.com/gingerBill) is [BDFL](https://wikipedia.org/wiki/Benevolent_dictator_for_life) and significant changes _must_ be passed by him.
+
+2. The proposal author creates a brief issue describing the proposal.
+
+   Note: There is no need for a design document at this point.<br>
+   Note: A non-proposal issue can be turned into a proposal by simply adding the _proposal_ label.
+
+3. A discussion on the issue tracker will classify the proposal into one of three outcomes:
+	* Accept proposal
+	* Decline proposal
+	* Ask for a design document.
+
+	If the proposal is accepted or declined, the process is done. Otherwise the discussion around the process is expected to identify issues that ought to be addressed in a more detailed design.
+
+4. The proposal author writes a design document to work out details of the proposed design and address the concerns raised in the initial discussion.
+
+5. Once comments and revisions on the design document calm, there is a final discussion on the issue, to reach one of two outcomes:
+	* Accept proposal
+	* Decline proposal
+
+After the proposal is accepted or declined, implementation of the proposal proceeds in the same way as any other contribution to the project.
+
+## Design Documents
+
+The design document should follow this template:
+
+
+```
+# Proposal: [Title]
+
+Author(s): [Author Name, Co-Author Name]
+Last updated: [Date ISO-8601]
+Discussion at https://github.com/odin-lang/Odin/issues/######
+
+## Abstract
+
+## Background
+
+## Proposal
+
+## Rationale
+
+## Compatibility
+
+## Implementation
+
+```
+
+
+## Help
+
+If you need help with this process, please contact an Odin contributor by posting an issue to the [issue tracker](https://github.com/odin-lang/Odin/issues).

README.md

@@ -1,15 +1,157 @@
-<img src="misc/logo-slim.png" alt="Odin logo" height="74">
+<p align="center">
+    <img src="misc/logo-slim.png" alt="Odin logo" height="120">
+    <br/>
+    A fast, concise, readable, pragmatic and open sourced programming language.
+    <br/>
+    <br/>
+    <a href="https://github.com/odin-lang/odin/releases/latest">
+        <img src="https://img.shields.io/github/release/odin-lang/odin.svg">
+    </a>
+    <a href="https://github.com/odin-lang/odin/releases/latest">
+        <img src="https://img.shields.io/badge/platforms-Windows%20|%20Linux%20|%20macOS-green.svg">
+    </a>
+    <br>
+    <a href="https://discord.gg/hnwN2Rj">
+        <img src="https://img.shields.io/discord/568138951836172421?logo=discord">
+    </a>
+    <a href="https://github.com/odin-lang/odin/actions">
+        <img src="https://github.com/odin-lang/odin/workflows/CI/badge.svg?branch=master&event=push">
+    </a>
+</p>
 
 # The Odin Programming Language
 
-The Odin programming language is fast, concise, readable, pragmatic and open sourced. It is designed with the intent of replacing C with the following goals:
+The Odin programming language is fast, concise, readable, pragmatic and open sourced. It is designed with the intent of creating an alternative to C with the following goals:
 * simplicity
 * high performance
 * built for modern systems
 * joy of programming
-* metaprogramming
 
-Website: [https://odin.handmade.network/](https://odin.handmade.network/)
+Website: [https://odin-lang.org/](https://odin-lang.org/)
+
+```odin
+package main
+
+import "core:fmt"
+
+main :: proc() {
+	program := "+ + * 😃 - /";
+	accumulator := 0;
+
+	for token in program {
+		switch token {
+		case '+': accumulator += 1;
+		case '-': accumulator -= 1;
+		case '*': accumulator *= 2;
+		case '/': accumulator /= 2;
+		case '😃': accumulator *= accumulator;
+		case: // Ignore everything else
+		}
+	}
+
+	fmt.printf("The program \"%s\" calculates the value %d\n",
+	           program, accumulator);
+}
+
+```
+
+
+## Documentation
+
+#### [Getting Started](https://odin-lang.org/docs/install)
+
+Instructions for downloading and installing the Odin compiler and libraries.
+
+### Learning Odin
+
+#### [Overview of Odin](https://odin-lang.org/docs/overview)
+
+An overview of the Odin programming language.
+
+#### [Frequently Asked Questions (FAQ)](https://odin-lang.org/docs/faq)
+
+Answers to common questions about Odin.
+
+#### [The Odin Wiki](https://github.com/odin-lang/Odin/wiki)
+
+A wiki maintained by the Odin community.
+
+#### [Odin Discord](https://discord.gg/sVBPHEv)
+
+Get live support and talk with other odiners on the Odin Discord.
+
+### References
+
+#### [Language Specification](https://odin-lang.org/ref/spec)
+
+The official Odin Language specification.
+
+### Articles
+
+#### [The Odin Blog](https://odin-lang.org/blog)
+
+The official blog of the Odin programming language, featuring announcements, news, and in-depth articles by the Odin team and guests.
+
+## Setup
+
+Odin only supports x86-64/amd64 at the moment (64-bit), relies on LLVM for code generation and an external linker.
+
+In addition, the following platform-specific steps are necessary:
+
+- Windows
+    * Have Visual Studio installed (MSVC 2010 or later, for the linker)
+    * Open a valid command prompt:
+        * **Basic:** run the `x64 Native Tools Command Prompt for VS2017` shortcut bundled with VS 2017, or
+        * **Advanced:** run `vcvarsall.bat x64` from a blank `cmd` session
+
+- MacOS
+    * Have LLVM explicitly installed (`brew install llvm`)
+    * Have XCode installed (version X.X or later, for linking)
+    * Make sure the LLVM binaries and the linker are added to your `$PATH` environmental variable
+
+- GNU/Linux
+    * Have LLVM installed (opt/llc)
+    * Have Clang installed (version X.X or later, for linking)
+    * Make sure the LLVM binaries and the linker are added to your `$PATH` environmental variable
+
+Then build the compiler by calling `build.bat` (Windows) or `make` (Linux/MacOS). This will automatically run the demo program if successful.
+
+**Notes for Linux:**: The compiler currently relies on the `core` and `shared` library collection being relative to the compiler executable. Installing the compiler in the usual sense (to `/usr/local/bin` or similar) is therefore not as straight forward as you need to make sure the mentioned libraries are available. As a result, it is recommended to simply explicitly invoke the compiler with `/path/to/odin` in your preferred build system, or add `/path/to/odin` to `$PATH`.
+
+Please read the [Getting Started Guide](https://github.com/odin-lang/Odin/wiki#getting-started-with-odin) for more information.
+
+## Requirements to build and run
+
+Please read the [Getting Started Guide](https://github.com/odin-lang/Odin/wiki#getting-started-with-odin).
+
+- Windows
+	* x86-64/amd64
+	* MSVC 2010 installed (C++11 support)
+	* Requires MSVC's link.exe as the linker
+		* run `vcvarsall.bat` to setup the path
+
+- MacOS
+	* x86-64/amd64
+	* LLVM explicitly installed (`brew install llvm`)
+	* XCode installed (for the linker)
+
+- GNU/Linux
+	* x86-64/amd64
+	* Build tools (ld)
+	* LLVM installed
+	* Clang installed (temporary - this is Calling the linker for now)
+
+- FreeBSD
+	* x86-64/amd64
+	* Build tools (ld)
+	* LLVM installed
+	* Clang installed (temporary - this is Calling the linker for now)
+
+Other platforms may be supported but are experimental for the time being.
+
+## Warnings
+
+* The Odin compiler is still in development.
 
 ## Demonstrations:
 * First Talk & Demo
@@ -22,49 +164,8 @@ Website: [https://odin.handmade.network/](https://odin.handmade.network/)
 * [when, for & procedure overloading](https://www.youtube.com/watch?v=OzeOekzyZK8)
 * [Context Types, Unexported Entities, Labelled Branches](https://www.youtube.com/watch?v=CkHVwT1Qk-g)
 * [Bit Fields, i128 & u128, Syntax Changes](https://www.youtube.com/watch?v=NlTutcLyF64)
+* [Default and Named Arguments; Explicit Parametric Polymorphism](https://www.youtube.com/watch?v=-XQZE6S6zUU)
+* [Loadsachanges](https://www.youtube.com/watch?v=ar0vFMoMtrI)
+* [Packages, Bit Sets, cstring](https://youtu.be/b8bJbjiXZrQ)
+	- [Q&A](https://youtu.be/5jmxyIfyyTk)
 
-## Requirements to build and run
-
-- Windows
-	* x86-64
-	* MSVC 2015 installed (C++11 support)
-	* [LLVM binaries](https://github.com/gingerBill/Odin/releases/tag/llvm-4.0-windows) for `opt.exe` and `llc.exe`
-	* Requires MSVC's link.exe as the linker
-		* run `vcvarsall.bat` to setup the path
-
-- MacOS
-	* x86-64
-	* LLVM explicitly installed (`brew install llvm`)
-	* XCode installed (for the linker)
-
-- GNU/Linux
-	* x86-64
-	* Build tools (ld)
-	* LLVM installed
-	* Clang installed (temporary - this is Calling the linker for now)
-
-## Warnings
-
-* This is still highly in development and the language's design is quite volatile.
-* Syntax is not fixed.
-
-## Roadmap
-
-Not in any particular order and not be implemented
-
-* Compile Time Execution (CTE)
-	- More metaprogramming madness
-	- Compiler as a library
-	- AST inspection and modification
-* CTE-based build system
-* Replace LLVM backend with my own custom backend
-* Improve SSA design to accommodate for lowering to a "bytecode"
-* SSA optimizations
-* Documentation Generator for "Entities"
-* Multiple Architecture support
-* Debug Information
-	- pdb format too
-* Command Line Tooling
-* Compiler Internals:
-	- Big numbers library
-	- Multithreading for performance increase

bin/README.md

@@ -0,0 +1,29 @@
+# The Odin Programming Language
+
+## Setup
+
+Odin currently supports x86-64 and ARM64 at the moment (64-bit), relies on LLVM for code generation and an external linker.
+
+In addition, the following platform-specific steps are necessary:
+
+- Windows
+    * Have Visual Studio installed (MSVC 2010 or later, for the linker)
+    * Open a valid command prompt:
+        * **Basic:** run the `x64 Native Tools Command Prompt for VS2017` shortcut bundled with VS 2017, or
+        * **Advanced:** run `vcvarsall.bat x64` from a blank `cmd` session
+
+- MacOS
+    * Have LLVM explicitly installed (`brew install llvm`)
+    * Have XCode installed (version X.X or later, for linking)
+    * Make sure the LLVM binaries and the linker are added to your `$PATH` environmental variable
+
+- GNU/Linux
+    * Have Clang installed (version X.X or later, for linking)
+    * Make sure the LLVM binaries and the linker are added to your `$PATH` environmental variable
+
+Then build the compiler by calling `build.bat` (Windows) or `make` (Linux/MacOS). This will automatically run the demo program if successful.
+
+**Notes for \*Nix Systems:**: The compiler currently relies on the `core` and `shared` library collection being relative to the compiler executable, by default. Installing the compiler in the usual sense (to `/usr/local/bin` or similar) is therefore not as straight forward as you need to make sure the mentioned libraries are available. As a result, it is recommended to either simply explicitly invoke the compiler with `/path/to/odin` in your preferred build system, or `set ODIN_ROOT=/path/to/odin_root`.
+
+
+Please read the [Getting Started Guide](https://github.com/odin-lang/Odin/wiki#getting-started-with-odin) for more information.

build.bat

@@ -1,31 +1,60 @@
 @echo off
 
+setlocal EnableDelayedExpansion
+
+for /f "usebackq tokens=1,2 delims=,=- " %%i in (`wmic os get LocalDateTime /value`) do @if %%i==LocalDateTime (
+     set CURR_DATE_TIME=%%j
+)
+
+set curr_year=%CURR_DATE_TIME:~0,4%
+set curr_month=%CURR_DATE_TIME:~4,2%
+
 :: Make sure this is a decent name and not generic
 set exe_name=odin.exe
 
 :: Debug = 0, Release = 1
-set release_mode=0
-set compiler_flags= -nologo -Oi -TP -fp:fast -fp:except- -Gm- -MP -FC -GS- -EHsc- -GR-
+if "%1" == "1" (
+	set release_mode=1
+) else if "%1" == "release" (
+	set release_mode=1
+) else (
+	set release_mode=0
+)
+
+:: Normal = 0, CI Nightly = 1
+if "%2" == "1" (
+    set nightly=1
+) else (
+    set nightly=0
+)
+
+set odin_version_raw="dev-%curr_year%-%curr_month%"
+
+set compiler_flags= -nologo -Oi -TP -fp:precise -Gm- -MP -FC -EHsc- -GR- -GF
+set compiler_defines= -DODIN_VERSION_RAW=\"%odin_version_raw%\"
+
+for /f %%i in ('git rev-parse --short HEAD') do set GIT_SHA=%%i
+if %ERRORLEVEL% equ 0 set compiler_defines=%compiler_defines% -DGIT_SHA=\"%GIT_SHA%\"
+if %nightly% equ 1 set compiler_defines=%compiler_defines% -DNIGHTLY
 
 if %release_mode% EQU 0 ( rem Debug
 	set compiler_flags=%compiler_flags% -Od -MDd -Z7
-	rem -DDISPLAY_TIMING
 ) else ( rem Release
 	set compiler_flags=%compiler_flags% -O2 -MT -Z7
+	set compiler_defines=%compiler_defines% -DNO_ARRAY_BOUNDS_CHECK
 )
 
 set compiler_warnings= ^
 	-W4 -WX ^
 	-wd4100 -wd4101 -wd4127 -wd4189 ^
-	-wd4201 -wd4204 -wd4244 ^
-	-wd4306 ^
+	-wd4201 -wd4204 ^
 	-wd4456 -wd4457 -wd4480 ^
-	-wd4505 -wd4512 -wd4550
+	-wd4512
 
 set compiler_includes=
 set libs= ^
-	kernel32.lib
-	rem "src\dyncall\lib\*.lib"
+	kernel32.lib ^
+	bin\llvm\windows\LLVM-C.lib
 
 set linker_flags= -incremental:no -opt:ref -subsystem:console
 
@@ -35,18 +64,17 @@ if %release_mode% EQU 0 ( rem Debug
 	set linker_flags=%linker_flags% -debug
 )
 
-set compiler_settings=%compiler_includes% %compiler_flags% %compiler_warnings%
+set compiler_settings=%compiler_includes% %compiler_flags% %compiler_warnings% %compiler_defines%
 set linker_settings=%libs% %linker_flags%
 
 del *.pdb > NUL 2> NUL
 del *.ilk > NUL 2> NUL
 
-cl %compiler_settings% "src\main.cpp" ^
-	/link %linker_settings% -OUT:%exe_name% ^
-	&& odin run examples/demo.odin -opt=0
-	rem && odin docs core/fmt.odin
+cl %compiler_settings% "src\main.cpp" /link %linker_settings% -OUT:%exe_name%
+
+if %errorlevel% neq 0 goto end_of_build
+if %release_mode% EQU 0 odin run examples/demo/demo.odin
 
 del *.obj > NUL 2> NUL
 
 :end_of_build
-

build.sh

@@ -1,28 +0,0 @@
-#!/bin/bash
-
-release_mode=$1
-
-warnings_to_disable="-std=c++11 -Wno-switch -Wno-pointer-sign -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare -Wno-macro-redefined -Wno-writable-strings"
-libraries="-pthread -ldl -lm -lstdc++"
-other_args=""
-compiler="clang"
-
-if [ -z "$release_mode" ]; then release_mode="0"; fi
-
-if [ "$release_mode" -eq "0" ]; then
-	other_args="${other_args} -g"
-fi
-if [ "$release_mode" -eq "1" ]; then
-	other_args="${other_args} -O3 -march=native"
-fi
-
-if [[ "$(uname)" == "Darwin" ]]; then
-
-	# Set compiler to clang on MacOS
-	# MacOS provides a symlink to clang called gcc, but it's nice to be explicit here.
-	compiler="clang"
-
-	other_args="${other_args} -liconv"
-fi
-
-${compiler} src/main.cpp ${warnings_to_disable} ${libraries} ${other_args} -o odin && ./odin run examples/demo.odin

ci/create_nightly_json.py

@@ -0,0 +1,51 @@
+import subprocess
+import sys
+import json
+import datetime
+import urllib.parse
+import sys
+
+def main():
+    files_by_date = {}
+    bucket = sys.argv[1]
+
+    files_lines = execute_cli(f"b2 ls --long {bucket} nightly").split("\n")
+    for x in files_lines:
+        parts = x.split(" ", 1)
+        if parts[0]:
+            json_str = execute_cli(f"b2 get-file-info {parts[0]}")
+            data = json.loads(json_str)
+            name = remove_prefix(data['fileName'], "nightly/")
+            url = f"https://f001.backblazeb2.com/file/{bucket}/nightly/{urllib.parse.quote_plus(name)}"
+            sha1 = data['contentSha1']
+            size = int(data['contentLength'])
+            ts = int(data['fileInfo']['src_last_modified_millis'])
+            date = datetime.datetime.fromtimestamp(ts/1000).strftime('%Y-%m-%d')
+            
+            if date not in files_by_date.keys():
+                files_by_date[date] = []
+
+            files_by_date[date].append({
+                                            'name': name,
+                                            'url': url,
+                                            'sha1': sha1,
+                                            'sizeInBytes': size,
+                                         })
+
+    now = datetime.datetime.utcnow().isoformat()
+
+    print(json.dumps({
+                        'last_updated' : now,
+                        'files': files_by_date
+                     }, sort_keys=True, indent=4))
+
+def remove_prefix(text, prefix):
+    return text[text.startswith(prefix) and len(prefix):]
+
+def execute_cli(command):
+    sb = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
+    return sb.stdout.read().decode("utf-8");
+
+if __name__ == '__main__':
+    sys.exit(main())
+

ci/delete_old_binaries.py

@@ -0,0 +1,34 @@
+import subprocess
+import sys
+import json
+import datetime
+import urllib.parse
+import sys
+
+def main():
+    files_by_date = {}
+    bucket = sys.argv[1]
+    days_to_keep = int(sys.argv[2])
+    print(f"Looking for binaries to delete older than {days_to_keep} days")
+
+    files_lines = execute_cli(f"b2 ls --long --versions {bucket} nightly").split("\n")
+    for x in files_lines:
+        parts = [y for y in x.split(' ') if y]
+
+        if parts and parts[0]:
+            date = datetime.datetime.strptime(parts[2], '%Y-%m-%d').replace(hour=0, minute=0, second=0, microsecond=0)
+            now = datetime.datetime.utcnow().replace(hour=0, minute=0, second=0, microsecond=0)
+            delta = now - date
+
+            if delta.days > days_to_keep:
+                print(f'Deleting {parts[5]}')
+                execute_cli(f'b2 delete-file-version {parts[0]}')
+
+
+def execute_cli(command):
+    sb = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
+    return sb.stdout.read().decode("utf-8");
+
+if __name__ == '__main__':
+    sys.exit(main())
+

ci/upload_create_nightly.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+bucket=$1
+platform=$2
+artifact=$3
+
+now=$(date +'%Y-%m-%d')
+filename="odin-$platform-nightly+$now.zip"
+
+echo "Creating archive $filename from $artifact and uploading to $bucket"
+
+7z a -bd "output/$filename" -r "$artifact"
+b2 upload-file --noProgress "$bucket" "output/$filename" "nightly/$filename"

core/_soft_numbers.odin

@@ -1,110 +0,0 @@
-#shared_global_scope
-
-@(link_name="__multi3")
-__multi3 :: proc "c" (a, b: u128) -> u128 {
-	bits_in_dword_2 :: size_of(i64) * 4;
-	lower_mask :: u128(~u64(0) >> bits_in_dword_2);
-
-
-	when ODIN_ENDIAN == "big" {
-		TWords :: struct #raw_union {
-			all: u128,
-			using _: struct {lo, hi: u64},
-		};
-	} else {
-		TWords :: struct #raw_union {
-			all: u128,
-			using _: struct {hi, lo: u64},
-		};
-	}
-
-	r: TWords;
-	t: u64;
-
-	r.lo =  u64(a & lower_mask) * u64(b & lower_mask);
-	t    =  r.lo >> bits_in_dword_2;
-	r.lo &= u64(lower_mask);
-	t    += u64(a >> bits_in_dword_2) * u64(b & lower_mask);
-	r.lo += u64(t & u64(lower_mask)) << bits_in_dword_2;
-	r.hi =  t >> bits_in_dword_2;
-	t    =  r.lo >> bits_in_dword_2;
-	r.lo &= u64(lower_mask);
-	t    += u64(b >> bits_in_dword_2) * u64(a & lower_mask);
-	r.lo += u64(t & u64(lower_mask)) << bits_in_dword_2;
-	r.hi += t >> bits_in_dword_2;
-	r.hi += u64(a >> bits_in_dword_2) * u64(b >> bits_in_dword_2);
-	return r.all;
-}
-
-@(link_name="__umodti3")
-__u128_mod :: proc "c" (a, b: u128) -> u128 {
-	r: u128;
-	__u128_quo_mod(a, b, &r);
-	return r;
-}
-
-@(link_name="__udivti3")
-__u128_quo :: proc "c" (a, b: u128) -> u128 {
-	return __u128_quo_mod(a, b, nil);
-}
-
-@(link_name="__modti3")
-__i128_mod :: proc "c" (a, b: i128) -> i128 {
-	r: i128;
-	__i128_quo_mod(a, b, &r);
-	return r;
-}
-
-@(link_name="__divti3")
-__i128_quo :: proc "c" (a, b: i128) -> i128 {
-	return __i128_quo_mod(a, b, nil);
-}
-
-@(link_name="__divmodti4")
-__i128_quo_mod :: proc "c" (a, b: i128, rem: ^i128) -> (quo: i128) {
-	s: i128;
-	s = b >> 127;
-	b = (b~s) - s;
-	s = a >> 127;
-	b = (a~s) - s;
-
-	uquo: u128;
-	urem := __u128_quo_mod(transmute(u128)a, transmute(u128)b, &uquo);
-	iquo := transmute(i128)uquo;
-	irem := transmute(i128)urem;
-
-	iquo = (iquo~s) - s;
-	irem = (irem~s) - s;
-	if rem != nil do rem^ = irem;
-	return iquo;
-}
-
-
-@(link_name="__udivmodti4")
-__u128_quo_mod :: proc "c" (a, b: u128, rem: ^u128) -> (quo: u128) {
-	alo := u64(a);
-	blo := u64(b);
-	if b == 0 {
-		if rem != nil do rem^ = 0;
-		return u128(alo/blo);
-	}
-
-	r, d, x, q: u128 = a, b, 1, 0;
-
-	for r >= d && (d>>127)&1 == 0 {
-		x <<= 1;
-		d <<= 1;
-	}
-
-	for x != 0 {
-		if r >= d {
-			r -= d;
-			q |= x;
-		}
-		x >>= 1;
-		d >>= 1;
-	}
-
-	if rem != nil do rem^ = r;
-	return q;
-}

core/atomics.odin

@@ -1,102 +0,0 @@
-// TODO(bill): Use assembly instead here to implement atomics
-// Inline vs external file?
-
-when ODIN_OS == "windows" {
-	import win32 "core:sys/windows.odin"
-}
-_ :: compile_assert(ODIN_ARCH == "amd64"); // TODO(bill): x86 version
-
-
-yield_thread :: proc() { win32.mm_pause(); }
-mfence       :: proc() { win32.read_write_barrier(); }
-sfence       :: proc() { win32.write_barrier(); }
-lfence       :: proc() { win32.read_barrier(); }
-
-
-load :: proc(a: ^i32) -> i32 {
-	return a^;
-}
-store :: proc(a: ^i32, value: i32) {
-	a^ = value;
-}
-compare_exchange :: proc(a: ^i32, expected, desired: i32) -> i32 {
-	return win32.interlocked_compare_exchange(a, desired, expected);
-}
-exchanged :: proc(a: ^i32, desired: i32) -> i32 {
-	return win32.interlocked_exchange(a, desired);
-}
-fetch_add :: proc(a: ^i32, operand: i32) -> i32 {
-	return win32.interlocked_exchange_add(a, operand);
-
-}
-fetch_and :: proc(a: ^i32, operand: i32) -> i32 {
-	return win32.interlocked_and(a, operand);
-}
-fetch_or :: proc(a: ^i32, operand: i32) -> i32 {
-	return win32.interlocked_or(a, operand);
-}
-spin_lock :: proc(a: ^i32, time_out: int) -> bool { // NOTE(bill) time_out = -1 as default
-	old_value := compare_exchange(a, 1, 0);
-	counter := 0;
-	for old_value != 0 && (time_out < 0 || counter < time_out) {
-		counter += 1;
-		yield_thread();
-		old_value = compare_exchange(a, 1, 0);
-		mfence();
-	}
-	return old_value == 0;
-}
-spin_unlock :: proc(a: ^i32) {
-	store(a, 0);
-	mfence();
-}
-try_acquire_lock :: proc(a: ^i32) -> bool {
-	yield_thread();
-	old_value := compare_exchange(a, 1, 0);
-	mfence();
-	return old_value == 0;
-}
-
-
-load :: proc(a: ^i64) -> i64 {
-	return a^;
-}
-store :: proc(a: ^i64, value: i64) {
-	a^ = value;
-}
-compare_exchange :: proc(a: ^i64, expected, desired: i64) -> i64 {
-	return win32.interlocked_compare_exchange64(a, desired, expected);
-}
-exchanged :: proc(a: ^i64, desired: i64) -> i64 {
-	return win32.interlocked_exchange64(a, desired);
-}
-fetch_add :: proc(a: ^i64, operand: i64) -> i64 {
-	return win32.interlocked_exchange_add64(a, operand);
-}
-fetch_and :: proc(a: ^i64, operand: i64) -> i64 {
-	return win32.interlocked_and64(a, operand);
-}
-fetch_or :: proc(a: ^i64, operand: i64) -> i64 {
-	return win32.interlocked_or64(a, operand);
-}
-spin_lock :: proc(a: ^i64, time_out: int) -> bool { // NOTE(bill) time_out = -1 as default
-	old_value := compare_exchange(a, 1, 0);
-	counter := 0;
-	for old_value != 0 && (time_out < 0 || counter < time_out) {
-		counter += 1;
-		yield_thread();
-		old_value = compare_exchange(a, 1, 0);
-		mfence();
-	}
-	return old_value == 0;
-}
-spin_unlock :: proc(a: ^i64) {
-	store(a, 0);
-	mfence();
-}
-try_acquire_lock :: proc(a: ^i64) -> bool {
-	yield_thread();
-	old_value := compare_exchange(a, 1, 0);
-	mfence();
-	return old_value == 0;
-}

core/bits.odin

@@ -1,328 +0,0 @@
-U8_MIN   ::   u8(0);
-U16_MIN  ::  u16(0);
-U32_MIN  ::  u32(0);
-U64_MIN  ::  u64(0);
-U128_MIN :: u128(0);
-
-U8_MAX   ::   ~u8(0);
-U16_MAX  ::  ~u16(0);
-U32_MAX  ::  ~u32(0);
-U64_MAX  ::  ~u64(0);
-U128_MAX :: ~u128(0);
-
-I8_MIN   ::   i8(  ~u8(0) >> 1);
-I16_MIN  ::  i16( ~u16(0) >> 1);
-I32_MIN  ::  i32( ~u32(0) >> 1);
-I64_MIN  ::  i64( ~u64(0) >> 1);
-I128_MIN :: i128(~u128(0) >> 1);
-
-I8_MAX   ::   -I8_MIN - 1;
-I16_MAX  ::  -I16_MIN - 1;
-I32_MAX  ::  -I32_MIN - 1;
-I64_MAX  ::  -I64_MIN - 1;
-I128_MAX :: -I128_MIN - 1;
-
-foreign __llvm_core {
-	@(link_name="llvm.ctpop.i8")        __llvm_ctpop :: proc(u8)   ->   u8 ---;
-	@(link_name="llvm.ctpop.i8")        __llvm_ctpop :: proc(i8)   ->   i8 ---;
-	@(link_name="llvm.ctpop.i16")       __llvm_ctpop :: proc(u16)  ->  u16 ---;
-	@(link_name="llvm.ctpop.i16")       __llvm_ctpop :: proc(i16)  ->  i16 ---;
-	@(link_name="llvm.ctpop.i32")       __llvm_ctpop :: proc(u32)  ->  u32 ---;
-	@(link_name="llvm.ctpop.i32")       __llvm_ctpop :: proc(i32)  ->  i32 ---;
-	@(link_name="llvm.ctpop.i64")       __llvm_ctpop :: proc(u64)  ->  u64 ---;
-	@(link_name="llvm.ctpop.i64")       __llvm_ctpop :: proc(i64)  ->  i64 ---;
-	@(link_name="llvm.ctpop.i128")      __llvm_ctpop :: proc(u128) -> u128 ---;
-	@(link_name="llvm.ctpop.i128")      __llvm_ctpop :: proc(i128) -> i128 ---;
-
-	@(link_name="llvm.ctlz.i8")         __llvm_ctlz :: proc(u8,   bool) ->   u8 ---;
-	@(link_name="llvm.ctlz.i8")         __llvm_ctlz :: proc(i8,   bool) ->   i8 ---;
-	@(link_name="llvm.ctlz.i16")        __llvm_ctlz :: proc(u16,  bool) ->  u16 ---;
-	@(link_name="llvm.ctlz.i16")        __llvm_ctlz :: proc(i16,  bool) ->  i16 ---;
-	@(link_name="llvm.ctlz.i32")        __llvm_ctlz :: proc(u32,  bool) ->  u32 ---;
-	@(link_name="llvm.ctlz.i32")        __llvm_ctlz :: proc(i32,  bool) ->  i32 ---;
-	@(link_name="llvm.ctlz.i64")        __llvm_ctlz :: proc(u64,  bool) ->  u64 ---;
-	@(link_name="llvm.ctlz.i64")        __llvm_ctlz :: proc(i64,  bool) ->  i64 ---;
-	@(link_name="llvm.ctlz.i128")       __llvm_ctlz :: proc(u128, bool) -> u128 ---;
-	@(link_name="llvm.ctlz.i128")       __llvm_ctlz :: proc(i128, bool) -> i128 ---;
-
-	@(link_name="llvm.cttz.i8")         __llvm_cttz :: proc(u8,   bool) ->   u8 ---;
-	@(link_name="llvm.cttz.i8")         __llvm_cttz :: proc(i8,   bool) ->   i8 ---;
-	@(link_name="llvm.cttz.i16")        __llvm_cttz :: proc(u16,  bool) ->  u16 ---;
-	@(link_name="llvm.cttz.i16")        __llvm_cttz :: proc(i16,  bool) ->  i16 ---;
-	@(link_name="llvm.cttz.i32")        __llvm_cttz :: proc(u32,  bool) ->  u32 ---;
-	@(link_name="llvm.cttz.i32")        __llvm_cttz :: proc(i32,  bool) ->  i32 ---;
-	@(link_name="llvm.cttz.i64")        __llvm_cttz :: proc(u64,  bool) ->  u64 ---;
-	@(link_name="llvm.cttz.i64")        __llvm_cttz :: proc(i64,  bool) ->  i64 ---;
-	@(link_name="llvm.cttz.i128")       __llvm_cttz :: proc(u128, bool) -> u128 ---;
-	@(link_name="llvm.cttz.i128")       __llvm_cttz :: proc(i128, bool) -> i128 ---;
-
-	@(link_name="llvm.bitreverse.i8")   __llvm_bitreverse :: proc(u8)   ->   u8 ---;
-	@(link_name="llvm.bitreverse.i8")   __llvm_bitreverse :: proc(i8)   ->   i8 ---;
-	@(link_name="llvm.bitreverse.i16")  __llvm_bitreverse :: proc(u16)  ->  u16 ---;
-	@(link_name="llvm.bitreverse.i16")  __llvm_bitreverse :: proc(i16)  ->  i16 ---;
-	@(link_name="llvm.bitreverse.i32")  __llvm_bitreverse :: proc(u32)  ->  u32 ---;
-	@(link_name="llvm.bitreverse.i32")  __llvm_bitreverse :: proc(i32)  ->  i32 ---;
-	@(link_name="llvm.bitreverse.i64")  __llvm_bitreverse :: proc(u64)  ->  u64 ---;
-	@(link_name="llvm.bitreverse.i64")  __llvm_bitreverse :: proc(i64)  ->  i64 ---;
-	@(link_name="llvm.bitreverse.i128") __llvm_bitreverse :: proc(u128) -> u128 ---;
-	@(link_name="llvm.bitreverse.i128") __llvm_bitreverse :: proc(i128) -> i128 ---;
-
-	@(link_name="llvm.bswap.i16")  byte_swap :: proc(u16)  ->  u16 ---;
-	@(link_name="llvm.bswap.i16")  byte_swap :: proc(i16)  ->  i16 ---;
-	@(link_name="llvm.bswap.i32")  byte_swap :: proc(u32)  ->  u32 ---;
-	@(link_name="llvm.bswap.i32")  byte_swap :: proc(i32)  ->  i32 ---;
-	@(link_name="llvm.bswap.i64")  byte_swap :: proc(u64)  ->  u64 ---;
-	@(link_name="llvm.bswap.i64")  byte_swap :: proc(i64)  ->  i64 ---;
-	@(link_name="llvm.bswap.i128") byte_swap :: proc(u128) -> u128 ---;
-	@(link_name="llvm.bswap.i128") byte_swap :: proc(i128) -> i128 ---;
-}
-byte_swap :: proc(i: uint) -> uint { when size_of(uint) == size_of(u32) { return uint(byte_swap(u32(i))); } else { return uint(byte_swap(u64(i))); } }
-byte_swap :: proc(i:  int) ->  int { when size_of(int)  == size_of(i32) { return  int(byte_swap(i32(i))); } else { return  int(byte_swap(i64(i))); } }
-
-count_ones :: proc(i:   u8) ->   u8 { return __llvm_ctpop(i); }
-count_ones :: proc(i:   i8) ->   i8 { return __llvm_ctpop(i); }
-count_ones :: proc(i:  u16) ->  u16 { return __llvm_ctpop(i); }
-count_ones :: proc(i:  i16) ->  i16 { return __llvm_ctpop(i); }
-count_ones :: proc(i:  u32) ->  u32 { return __llvm_ctpop(i); }
-count_ones :: proc(i:  i32) ->  i32 { return __llvm_ctpop(i); }
-count_ones :: proc(i:  u64) ->  u64 { return __llvm_ctpop(i); }
-count_ones :: proc(i:  i64) ->  i64 { return __llvm_ctpop(i); }
-count_ones :: proc(i: u128) -> u128 { return __llvm_ctpop(i); }
-count_ones :: proc(i: i128) -> i128 { return __llvm_ctpop(i); }
-count_ones :: proc(i: uint) -> uint { when size_of(uint) == size_of(u32) { return uint(count_ones(u32(i))); } else { return uint(count_ones(u64(i))); } }
-count_ones :: proc(i:  int) ->  int { when size_of(int)  == size_of(i32) { return int(count_ones(i32(i)));  } else { return int(count_ones(i64(i))); } }
-
-count_zeros :: proc(i:   u8) ->   u8 { return   8 - count_ones(i); }
-count_zeros :: proc(i:   i8) ->   i8 { return   8 - count_ones(i); }
-count_zeros :: proc(i:  u16) ->  u16 { return  16 - count_ones(i); }
-count_zeros :: proc(i:  i16) ->  i16 { return  16 - count_ones(i); }
-count_zeros :: proc(i:  u32) ->  u32 { return  32 - count_ones(i); }
-count_zeros :: proc(i:  i32) ->  i32 { return  32 - count_ones(i); }
-count_zeros :: proc(i:  u64) ->  u64 { return  64 - count_ones(i); }
-count_zeros :: proc(i:  i64) ->  i64 { return  64 - count_ones(i); }
-count_zeros :: proc(i: u128) -> u128 { return 128 - count_ones(i); }
-count_zeros :: proc(i: i128) -> i128 { return 128 - count_ones(i); }
-count_zeros :: proc(i: uint) -> uint { return 8*size_of(uint) - count_ones(i); }
-count_zeros :: proc(i:  int) ->  int { return 8*size_of(int)  - count_ones(i); }
-
-
-rotate_left :: proc(i: u8,   s: uint) ->   u8 { return (i << s)|(i >> (8*size_of(u8)   - s)); }
-rotate_left :: proc(i: i8,   s: uint) ->   i8 { return (i << s)|(i >> (8*size_of(i8)   - s)); }
-rotate_left :: proc(i: u16,  s: uint) ->  u16 { return (i << s)|(i >> (8*size_of(u16)  - s)); }
-rotate_left :: proc(i: i16,  s: uint) ->  i16 { return (i << s)|(i >> (8*size_of(i16)  - s)); }
-rotate_left :: proc(i: u32,  s: uint) ->  u32 { return (i << s)|(i >> (8*size_of(u32)  - s)); }
-rotate_left :: proc(i: i32,  s: uint) ->  i32 { return (i << s)|(i >> (8*size_of(i32)  - s)); }
-rotate_left :: proc(i: u64,  s: uint) ->  u64 { return (i << s)|(i >> (8*size_of(u64)  - s)); }
-rotate_left :: proc(i: i64,  s: uint) ->  i64 { return (i << s)|(i >> (8*size_of(i64)  - s)); }
-rotate_left :: proc(i: u128, s: uint) -> u128 { return (i << s)|(i >> (8*size_of(u128) - s)); }
-rotate_left :: proc(i: i128, s: uint) -> i128 { return (i << s)|(i >> (8*size_of(i128) - s)); }
-rotate_left :: proc(i: uint, s: uint) -> uint { when size_of(uint) == size_of(u32) { return uint(rotate_left(u32(i), s)); } else { return uint(rotate_left(u64(i), s)); } }
-rotate_left :: proc(i:  int, s: uint) ->  int { when size_of(int)  == size_of(i32) { return  int(rotate_left(i32(i), s)); } else { return  int(rotate_left(i64(i), s)); } }
-
-
-rotate_right :: proc(i: u8,   s: uint) ->   u8 { return (i >> s)|(i << (8*size_of(u8)   - s)); }
-rotate_right :: proc(i: i8,   s: uint) ->   i8 { return (i >> s)|(i << (8*size_of(i8)   - s)); }
-rotate_right :: proc(i: u16,  s: uint) ->  u16 { return (i >> s)|(i << (8*size_of(u16)  - s)); }
-rotate_right :: proc(i: i16,  s: uint) ->  i16 { return (i >> s)|(i << (8*size_of(i16)  - s)); }
-rotate_right :: proc(i: u32,  s: uint) ->  u32 { return (i >> s)|(i << (8*size_of(u32)  - s)); }
-rotate_right :: proc(i: i32,  s: uint) ->  i32 { return (i >> s)|(i << (8*size_of(i32)  - s)); }
-rotate_right :: proc(i: u64,  s: uint) ->  u64 { return (i >> s)|(i << (8*size_of(u64)  - s)); }
-rotate_right :: proc(i: i64,  s: uint) ->  i64 { return (i >> s)|(i << (8*size_of(i64)  - s)); }
-rotate_right :: proc(i: u128, s: uint) -> u128 { return (i >> s)|(i << (8*size_of(u128) - s)); }
-rotate_right :: proc(i: i128, s: uint) -> i128 { return (i >> s)|(i << (8*size_of(i128) - s)); }
-rotate_right :: proc(i: uint, s: uint) -> uint { when size_of(uint) == size_of(u32) { return uint(rotate_right(u32(i), s)); } else { return uint(rotate_right(u64(i), s)); } }
-rotate_right :: proc(i:  int, s: uint) ->  int { when size_of(int)  == size_of(i32) { return  int(rotate_right(i32(i), s)); } else { return  int(rotate_right(i64(i), s)); } }
-
-leading_zeros :: proc(i:   u8) ->   u8 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i:   i8) ->   i8 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i:  u16) ->  u16 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i:  i16) ->  i16 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i:  u32) ->  u32 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i:  i32) ->  i32 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i:  u64) ->  u64 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i:  i64) ->  i64 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i: u128) -> u128 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i: i128) -> i128 { return __llvm_ctlz(i, false); }
-leading_zeros :: proc(i: uint) -> uint { when size_of(uint) == size_of(u32) { return uint(leading_zeros(u32(i))); } else { return uint(leading_zeros(u64(i))); } }
-leading_zeros :: proc(i:  int) ->  int { when size_of(int)  == size_of(i32) { return  int(leading_zeros(i32(i))); } else { return  int(leading_zeros(i64(i))); } }
-
-trailing_zeros :: proc(i:   u8) ->   u8 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i:   i8) ->   i8 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i:  u16) ->  u16 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i:  i16) ->  i16 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i:  u32) ->  u32 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i:  i32) ->  i32 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i:  u64) ->  u64 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i:  i64) ->  i64 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i: u128) -> u128 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i: i128) -> i128 { return __llvm_cttz(i, false); }
-trailing_zeros :: proc(i: uint) -> uint { when size_of(uint) == size_of(u32) { return uint(trailing_zeros(u32(i))); } else { return uint(trailing_zeros(u64(i))); } }
-trailing_zeros :: proc(i:  int) ->  int { when size_of(int)  == size_of(i32) { return  int(trailing_zeros(i32(i))); } else { return  int(trailing_zeros(i64(i))); } }
-
-
-reverse_bits :: proc(i:   u8) ->   u8 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i:   i8) ->   i8 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i:  u16) ->  u16 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i:  i16) ->  i16 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i:  u32) ->  u32 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i:  i32) ->  i32 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i:  u64) ->  u64 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i:  i64) ->  i64 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i: u128) -> u128 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i: i128) -> i128 { return __llvm_bitreverse(i); }
-reverse_bits :: proc(i: uint) -> uint { when size_of(uint) == size_of(u32) { return uint(reverse_bits(u32(i))); } else { return uint(reverse_bits(u64(i))); } }
-reverse_bits :: proc(i:  int) ->  int { when size_of(int)  == size_of(i32) { return  int(reverse_bits(i32(i))); } else { return  int(reverse_bits(i64(i))); } }
-
-from_be :: proc(i:   u8) ->   u8 { return i; }
-from_be :: proc(i:   i8) ->   i8 { return i; }
-from_be :: proc(i:  u16) ->  u16 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i:  i16) ->  i16 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i:  u32) ->  u32 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i:  i32) ->  i32 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i:  u64) ->  u64 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i:  i64) ->  i64 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i: u128) -> u128 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i: i128) -> i128 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i: uint) -> uint { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-from_be :: proc(i:  int) ->  int { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-
-from_le :: proc(i:   u8) ->   u8 { return i; }
-from_le :: proc(i:   i8) ->   i8 { return i; }
-from_le :: proc(i:  u16) ->  u16 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i:  i16) ->  i16 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i:  u32) ->  u32 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i:  i32) ->  i32 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i:  u64) ->  u64 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i:  i64) ->  i64 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i: u128) -> u128 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i: i128) -> i128 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i: uint) -> uint { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-from_le :: proc(i:  int) ->  int { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-
-to_be :: proc(i:   u8) ->   u8 { return i; }
-to_be :: proc(i:   i8) ->   i8 { return i; }
-to_be :: proc(i:  u16) ->  u16 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i:  i16) ->  i16 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i:  u32) ->  u32 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i:  i32) ->  i32 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i:  u64) ->  u64 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i:  i64) ->  i64 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i: u128) -> u128 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i: i128) -> i128 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i: uint) -> uint { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-to_be :: proc(i:  int) ->  int { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
-
-
-to_le :: proc(i:   u8) ->   u8 { return i; }
-to_le :: proc(i:   i8) ->   i8 { return i; }
-to_le :: proc(i:  u16) ->  u16 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i:  i16) ->  i16 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i:  u32) ->  u32 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i:  i32) ->  i32 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i:  u64) ->  u64 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i:  i64) ->  i64 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i: u128) -> u128 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i: i128) -> i128 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i: uint) -> uint { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-to_le :: proc(i:  int) ->  int { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
-
-
-overflowing_add :: proc(lhs, rhs:   u8) -> (u8, bool)   { foreign __llvm_core @(link_name="llvm.uadd.with.overflow.i8")   op :: proc(u8, u8)     -> (u8, bool)   ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs:   i8) -> (i8, bool)   { foreign __llvm_core @(link_name="llvm.sadd.with.overflow.i8")   op :: proc(i8, i8)     -> (i8, bool)   ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs:  u16) -> (u16, bool)  { foreign __llvm_core @(link_name="llvm.uadd.with.overflow.i16")  op :: proc(u16, u16)   -> (u16, bool)  ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs:  i16) -> (i16, bool)  { foreign __llvm_core @(link_name="llvm.sadd.with.overflow.i16")  op :: proc(i16, i16)   -> (i16, bool)  ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs:  u32) -> (u32, bool)  { foreign __llvm_core @(link_name="llvm.uadd.with.overflow.i32")  op :: proc(u32, u32)   -> (u32, bool)  ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs:  i32) -> (i32, bool)  { foreign __llvm_core @(link_name="llvm.sadd.with.overflow.i32")  op :: proc(i32, i32)   -> (i32, bool)  ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs:  u64) -> (u64, bool)  { foreign __llvm_core @(link_name="llvm.uadd.with.overflow.i64")  op :: proc(u64, u64)   -> (u64, bool)  ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs:  i64) -> (i64, bool)  { foreign __llvm_core @(link_name="llvm.sadd.with.overflow.i64")  op :: proc(i64, i64)   -> (i64, bool)  ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs: u128) -> (u128, bool) { foreign __llvm_core @(link_name="llvm.uadd.with.overflow.i128") op :: proc(u128, u128) -> (u128, bool) ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs: i128) -> (i128, bool) { foreign __llvm_core @(link_name="llvm.sadd.with.overflow.i128") op :: proc(i128, i128) -> (i128, bool) ---; return op(lhs, rhs); }
-overflowing_add :: proc(lhs, rhs: uint) -> (uint, bool) {
-	when size_of(uint) == size_of(u32) {
-		x, ok := overflowing_add(u32(lhs), u32(rhs));
-		return uint(x), ok;
-	} else {
-		x, ok := overflowing_add(u64(lhs), u64(rhs));
-		return uint(x), ok;
-	}
-}
-overflowing_add :: proc(lhs, rhs: int) -> (int, bool) {
-	when size_of(int) == size_of(i32) {
-		x, ok := overflowing_add(i32(lhs), i32(rhs));
-		return int(x), ok;
-	} else {
-		x, ok := overflowing_add(i64(lhs), i64(rhs));
-		return int(x), ok;
-	}
-}
-
-overflowing_sub :: proc(lhs, rhs:   u8) -> (u8, bool)   { foreign __llvm_core @(link_name="llvm.usub.with.overflow.i8")   op :: proc(u8, u8)     -> (u8, bool)   ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs:   i8) -> (i8, bool)   { foreign __llvm_core @(link_name="llvm.ssub.with.overflow.i8")   op :: proc(i8, i8)     -> (i8, bool)   ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs:  u16) -> (u16, bool)  { foreign __llvm_core @(link_name="llvm.usub.with.overflow.i16")  op :: proc(u16, u16)   -> (u16, bool)  ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs:  i16) -> (i16, bool)  { foreign __llvm_core @(link_name="llvm.ssub.with.overflow.i16")  op :: proc(i16, i16)   -> (i16, bool)  ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs:  u32) -> (u32, bool)  { foreign __llvm_core @(link_name="llvm.usub.with.overflow.i32")  op :: proc(u32, u32)   -> (u32, bool)  ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs:  i32) -> (i32, bool)  { foreign __llvm_core @(link_name="llvm.ssub.with.overflow.i32")  op :: proc(i32, i32)   -> (i32, bool)  ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs:  u64) -> (u64, bool)  { foreign __llvm_core @(link_name="llvm.usub.with.overflow.i64")  op :: proc(u64, u64)   -> (u64, bool)  ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs:  i64) -> (i64, bool)  { foreign __llvm_core @(link_name="llvm.ssub.with.overflow.i64")  op :: proc(i64, i64)   -> (i64, bool)  ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs: u128) -> (u128, bool) { foreign __llvm_core @(link_name="llvm.usub.with.overflow.i128") op :: proc(u128, u128) -> (u128, bool) ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs: i128) -> (i128, bool) { foreign __llvm_core @(link_name="llvm.ssub.with.overflow.i128") op :: proc(i128, i128) -> (i128, bool) ---; return op(lhs, rhs); }
-overflowing_sub :: proc(lhs, rhs: uint) -> (uint, bool) {
-	when size_of(uint) == size_of(u32) {
-		x, ok := overflowing_sub(u32(lhs), u32(rhs));
-		return uint(x), ok;
-	} else {
-		x, ok := overflowing_sub(u64(lhs), u64(rhs));
-		return uint(x), ok;
-	}
-}
-overflowing_sub :: proc(lhs, rhs: int) -> (int, bool) {
-	when size_of(int) == size_of(i32) {
-		x, ok := overflowing_sub(i32(lhs), i32(rhs));
-		return int(x), ok;
-	} else {
-		x, ok := overflowing_sub(i64(lhs), i64(rhs));
-		return int(x), ok;
-	}
-}
-
-overflowing_mul :: proc(lhs, rhs:   u8) -> (u8, bool)   { foreign __llvm_core @(link_name="llvm.umul.with.overflow.i8")   op :: proc(u8, u8)     -> (u8, bool)   ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs:   i8) -> (i8, bool)   { foreign __llvm_core @(link_name="llvm.smul.with.overflow.i8")   op :: proc(i8, i8)     -> (i8, bool)   ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs:  u16) -> (u16, bool)  { foreign __llvm_core @(link_name="llvm.umul.with.overflow.i16")  op :: proc(u16, u16)   -> (u16, bool)  ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs:  i16) -> (i16, bool)  { foreign __llvm_core @(link_name="llvm.smul.with.overflow.i16")  op :: proc(i16, i16)   -> (i16, bool)  ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs:  u32) -> (u32, bool)  { foreign __llvm_core @(link_name="llvm.umul.with.overflow.i32")  op :: proc(u32, u32)   -> (u32, bool)  ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs:  i32) -> (i32, bool)  { foreign __llvm_core @(link_name="llvm.smul.with.overflow.i32")  op :: proc(i32, i32)   -> (i32, bool)  ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs:  u64) -> (u64, bool)  { foreign __llvm_core @(link_name="llvm.umul.with.overflow.i64")  op :: proc(u64, u64)   -> (u64, bool)  ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs:  i64) -> (i64, bool)  { foreign __llvm_core @(link_name="llvm.smul.with.overflow.i64")  op :: proc(i64, i64)   -> (i64, bool)  ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs: u128) -> (u128, bool) { foreign __llvm_core @(link_name="llvm.umul.with.overflow.i128") op :: proc(u128, u128) -> (u128, bool) ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs: i128) -> (i128, bool) { foreign __llvm_core @(link_name="llvm.smul.with.overflow.i128") op :: proc(i128, i128) -> (i128, bool) ---; return op(lhs, rhs); }
-overflowing_mul :: proc(lhs, rhs: uint) -> (uint, bool) {
-	when size_of(uint) == size_of(u32) {
-		x, ok := overflowing_mul(u32(lhs), u32(rhs));
-		return uint(x), ok;
-	} else {
-		x, ok := overflowing_mul(u64(lhs), u64(rhs));
-		return uint(x), ok;
-	}
-}
-overflowing_mul :: proc(lhs, rhs: int) -> (int, bool) {
-	when size_of(int) == size_of(i32) {
-		x, ok := overflowing_mul(i32(lhs), i32(rhs));
-		return int(x), ok;
-	} else {
-		x, ok := overflowing_mul(i64(lhs), i64(rhs));
-		return int(x), ok;
-	}
-}
-
-is_power_of_two :: proc(i:   u8) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i:   i8) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i:  u16) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i:  i16) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i:  u32) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i:  i32) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i:  u64) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i:  i64) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i: u128) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i: i128) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i: uint) -> bool { return i > 0 && (i & (i-1)) == 0; }
-is_power_of_two :: proc(i:  int) -> bool { return i > 0 && (i & (i-1)) == 0; }

core/bufio/lookahead_reader.odin

@@ -0,0 +1,83 @@
+package bufio
+
+import "core:io"
+
+// Loadahead_Reader provides io lookahead.
+// This is useful for tokenizers/parsers.
+// Loadahead_Reader is similar to bufio.Reader, but unlike bufio.Reader, Loadahead_Reader's buffer size
+// will EXACTLY match the specified size, whereas bufio.Reader's buffer size may differ from the specified size.
+// This makes sure that the buffer will not be accidentally read beyond the expected size.
+Loadahead_Reader :: struct {
+	r:   io.Reader,
+	buf: []byte,
+	n:   int,
+}
+
+lookahead_reader_init :: proc(lr: ^Loadahead_Reader, r: io.Reader, buf: []byte) -> ^Loadahead_Reader {
+	lr.r = r;
+	lr.buf = buf;
+	lr.n = 0;
+	return lr;
+}
+
+lookahead_reader_buffer :: proc(lr: ^Loadahead_Reader) -> []byte {
+	return lr.buf[:lr.n];
+}
+
+
+// lookahead_reader_peek returns a slice of the Lookahead_Reader which holds n bytes
+// If the Lookahead_Reader cannot hold enough bytes, it will read from the underlying reader to populate the rest.
+// NOTE: The returned buffer is not a copy of the underlying buffer
+lookahead_reader_peek :: proc(lr: ^Loadahead_Reader, n: int) -> ([]byte, io.Error) {
+	switch {
+	case n < 0:
+		return nil, .Negative_Read;
+	case n > len(lr.buf):
+		return nil, .Buffer_Full;
+	}
+
+	n := n;
+	err: io.Error;
+	read_count: int;
+
+	if lr.n < n {
+		read_count, err = io.read_at_least(lr.r, lr.buf[lr.n:], n-lr.n);
+		if err == .Unexpected_EOF {
+			err = .EOF;
+		}
+	}
+
+	lr.n += read_count;
+
+	if n > lr.n {
+		n = lr.n;
+	}
+	return lr.buf[:n], err;
+}
+
+// lookahead_reader_peek_all returns a slice of the Lookahead_Reader populating the full buffer
+// If the Lookahead_Reader cannot hold enough bytes, it will read from the underlying reader to populate the rest.
+// NOTE: The returned buffer is not a copy of the underlying buffer
+lookahead_reader_peek_all :: proc(lr: ^Loadahead_Reader) -> ([]byte, io.Error) {
+	return lookahead_reader_peek(lr, len(lr.buf));
+}
+
+
+// lookahead_reader_consume drops the first n populated bytes from the Lookahead_Reader.
+lookahead_reader_consume :: proc(lr: ^Loadahead_Reader, n: int) -> io.Error {
+	switch {
+	case n == 0:
+		return nil;
+	case n < 0:
+		return .Negative_Read;
+	case lr.n < n:
+		return .Short_Buffer;
+	}
+	copy(lr.buf, lr.buf[n:lr.n]);
+	lr.n -= n;
+	return nil;
+}
+
+lookahead_reader_consume_all :: proc(lr: ^Loadahead_Reader) -> io.Error {
+	return lookahead_reader_consume(lr, lr.n);
+}

core/bufio/read_writer.odin

@@ -0,0 +1,68 @@
+package bufio
+
+import "core:io"
+
+// Read_Writer stores pointers to a Reader and a Writer
+Read_Writer :: struct {
+	r: ^Reader,
+	w: ^Writer,
+}
+
+
+read_writer_init :: proc(rw: ^Read_Writer, r: ^Reader, w: ^Writer) {
+	rw.r, rw.w = r, w;
+}
+
+read_writer_to_stream :: proc(rw: ^Read_Writer) -> (s: io.Stream) {
+	s.stream_data = rw;
+	s.stream_vtable = _read_writer_vtable;
+	return;
+}
+
+@(private)
+_read_writer_vtable := &io.Stream_VTable{
+	impl_read = proc(s: io.Stream, p: []byte) -> (n: int, err: io.Error) {
+		b := (^Read_Writer)(s.stream_data).r;
+		return reader_read(b, p);
+	},
+	impl_read_byte = proc(s: io.Stream) -> (c: byte, err: io.Error) {
+		b := (^Read_Writer)(s.stream_data).r;
+		return reader_read_byte(b);
+	},
+	impl_unread_byte = proc(s: io.Stream) -> io.Error {
+		b := (^Read_Writer)(s.stream_data).r;
+		return reader_unread_byte(b);
+	},
+	impl_read_rune = proc(s: io.Stream) -> (r: rune, size: int, err: io.Error) {
+		b := (^Read_Writer)(s.stream_data).r;
+		return reader_read_rune(b);
+	},
+	impl_unread_rune = proc(s: io.Stream) -> io.Error {
+		b := (^Read_Writer)(s.stream_data).r;
+		return reader_unread_rune(b);
+	},
+	impl_write_to = proc(s: io.Stream, w: io.Writer) -> (n: i64, err: io.Error) {
+		b := (^Read_Writer)(s.stream_data).r;
+		return reader_write_to(b, w);
+	},
+	impl_flush = proc(s: io.Stream)  -> io.Error {
+		b := (^Read_Writer)(s.stream_data).w;
+		return writer_flush(b);
+	},
+	impl_write = proc(s: io.Stream, p: []byte) -> (n: int, err: io.Error) {
+		b := (^Read_Writer)(s.stream_data).w;
+		return writer_write(b, p);
+	},
+	impl_write_byte = proc(s: io.Stream, c: byte) -> io.Error {
+		b := (^Read_Writer)(s.stream_data).w;
+		return writer_write_byte(b, c);
+	},
+	impl_write_rune = proc(s: io.Stream, r: rune) -> (int, io.Error) {
+		b := (^Read_Writer)(s.stream_data).w;
+		return writer_write_rune(b, r);
+	},
+	impl_read_from = proc(s: io.Stream, r: io.Reader) -> (n: i64, err: io.Error) {
+		b := (^Read_Writer)(s.stream_data).w;
+		return writer_read_from(b, r);
+	},
+};

core/bufio/reader.odin

@@ -0,0 +1,480 @@
+package bufio
+
+import "core:io"
+import "core:mem"
+import "core:unicode/utf8"
+import "core:bytes"
+
+// Reader is a buffered wrapper for an io.Reader
+Reader :: struct {
+	buf:            []byte,
+	buf_allocator:  mem.Allocator,
+
+	rd:             io.Reader, // reader
+	r, w:           int, // read and write positions for buf
+
+	err:            io.Error,
+
+	last_byte:      int, // last byte read, invalid is -1
+	last_rune_size: int, // size of last rune read, invalid is -1
+
+	max_consecutive_empty_reads: int,
+}
+
+
+DEFAULT_BUF_SIZE :: 4096;
+
+@(private)
+MIN_READ_BUFFER_SIZE :: 16;
+@(private)
+DEFAULT_MAX_CONSECUTIVE_EMPTY_READS :: 128;
+
+reader_init :: proc(b: ^Reader, rd: io.Reader, size: int = DEFAULT_BUF_SIZE, allocator := context.allocator) {
+	size := size;
+	size = max(size, MIN_READ_BUFFER_SIZE);
+	reader_reset(b, rd);
+	b.buf_allocator = allocator;
+	b.buf = make([]byte, size, allocator);
+}
+
+reader_init_with_buf :: proc(b: ^Reader, rd: io.Reader, buf: []byte) {
+	reader_reset(b, rd);
+	b.buf_allocator = {};
+	b.buf = buf;
+}
+
+// reader_destroy destroys the underlying buffer with its associated allocator IFF that allocator has been set
+reader_destroy :: proc(b: ^Reader) {
+	delete(b.buf, b.buf_allocator);
+	b^ = {};
+}
+
+reader_size :: proc(b: ^Reader) -> int {
+	return len(b.buf);
+}
+
+reader_reset :: proc(b: ^Reader, r: io.Reader) {
+	b.rd = r;
+	b.r, b.w = 0, 0;
+	b.err = nil;
+	b.last_byte      = -1;
+	b.last_rune_size = -1;
+}
+
+@(private)
+_reader_read_new_chunk :: proc(b: ^Reader) -> io.Error {
+	if b.r > 0 {
+		copy(b.buf, b.buf[b.r:b.w]);
+		b.w -= b.r;
+		b.r = 0;
+	}
+
+	if b.w >= len(b.buf) {
+		return .Buffer_Full;
+	}
+
+	if b.max_consecutive_empty_reads <= 0 {
+		b.max_consecutive_empty_reads = DEFAULT_MAX_CONSECUTIVE_EMPTY_READS;
+	}
+
+	// read new data, and try a limited number of times
+	for i := b.max_consecutive_empty_reads; i > 0; i -= 1 {
+		n, err := io.read(b.rd, b.buf[b.w:]);
+		if n < 0 {
+			return .Negative_Read;
+		}
+		b.w += n;
+		if err != nil {
+			b.err = err;
+			return nil;
+		}
+		if n > 0 {
+			return nil;
+		}
+	}
+	b.err = .No_Progress;
+	return nil;
+}
+
+@(private)
+_reader_consume_err :: proc(b: ^Reader) -> io.Error {
+	err := b.err;
+	b.err = nil;
+	return err;
+}
+
+// reader_peek returns the next n bytes without advancing the reader
+// The bytes stop being valid on the next read call
+// If reader_peek returns fewer than n bytes, it also return an error
+// explaining why the read is short
+// The error will be .Buffer_Full if n is larger than the internal buffer size
+reader_peek :: proc(b: ^Reader, n: int) -> (data: []byte, err: io.Error) {
+	n := n;
+
+	if n < 0 {
+		return nil, .Negative_Count;
+	}
+	b.last_byte = -1;
+	b.last_rune_size = -1;
+
+	for b.w-b.r < n && b.w-b.r < len(b.buf) && b.err == nil {
+		if fill_err := _reader_read_new_chunk(b); fill_err != nil {
+			return nil, fill_err;
+		}
+	}
+
+	if n > len(b.buf) {
+		return b.buf[b.r : b.w], .Buffer_Full;
+	}
+
+	if available := b.w - b.r; available < n {
+		n = available;
+		err = _reader_consume_err(b);
+		if err == nil {
+			err = .Buffer_Full;
+		}
+	}
+
+	return b.buf[b.r : b.r+n], err;
+}
+
+// reader_buffered returns the number of bytes that can be read from the current buffer
+reader_buffered :: proc(b: ^Reader) -> int {
+	return b.w - b.r;
+}
+
+// reader_discard skips the next n bytes, and returns the number of bytes that were discarded
+reader_discard :: proc(b: ^Reader, n: int) -> (discarded: int, err: io.Error) {
+	if n < 0 {
+		return 0, .Negative_Count;
+	}
+	if n == 0 {
+		return;
+	}
+
+	remaining := n;
+	for {
+		skip := reader_buffered(b);
+		if skip == 0 {
+			if fill_err := _reader_read_new_chunk(b); fill_err != nil {
+				return 0, fill_err;
+			}
+			skip = reader_buffered(b);
+		}
+		skip = min(skip, remaining);
+		b.r += skip;
+		remaining -= skip;
+		if remaining == 0 {
+			return n, nil;
+		}
+		if b.err != nil {
+			return n - remaining, _reader_consume_err(b);
+		}
+	}
+
+	return;
+}
+
+// reader_read reads data into p
+// The bytes are taken from at most one read on the underlying Reader, which means n may be less than len(p)
+reader_read :: proc(b: ^Reader, p: []byte) -> (n: int, err: io.Error) {
+	n = len(p);
+	if n == 0 {
+		if reader_buffered(b) > 0 {
+			return 0, nil;
+		}
+		return 0, _reader_consume_err(b);
+	}
+	if b.r == b.w {
+		if b.err != nil {
+			return 0, _reader_consume_err(b);
+		}
+
+		if len(p) >= len(b.buf) {
+			n, b.err = io.read(b.rd, p);
+			if n < 0 {
+				return 0, .Negative_Read;
+			}
+
+			if n > 0 {
+				b.last_byte = int(p[n-1]);
+				b.last_rune_size = -1;
+			}
+			return n, _reader_consume_err(b);
+		}
+
+		b.r, b.w = 0, 0;
+		n, b.err = io.read(b.rd, b.buf);
+		if n < 0 {
+			return 0, .Negative_Read;
+		}
+		if n == 0 {
+			return 0, _reader_consume_err(b);
+		}
+		b.w += n;
+	}
+
+	n = copy(p, b.buf[b.r:b.w]);
+	b.r += n;
+	b.last_byte = int(b.buf[b.r-1]);
+	b.last_rune_size = -1;
+	return n, nil;
+}
+
+// reader_read_byte reads and returns a single byte
+// If no byte is available, it return an error
+reader_read_byte :: proc(b: ^Reader) -> (byte, io.Error) {
+	b.last_rune_size = -1;
+	for b.r == b.w {
+		if b.err != nil {
+			return 0, _reader_consume_err(b);
+		}
+		if err := _reader_read_new_chunk(b); err != nil {
+			return 0, err;
+		}
+	}
+	c := b.buf[b.r];
+	b.r += 1;
+	b.last_byte = int(c);
+	return c, nil;
+}
+
+// reader_unread_byte unreads the last byte. Only the most recently read byte can be unread
+reader_unread_byte :: proc(b: ^Reader) -> io.Error {
+	if b.last_byte < 0 || b.r == 0 && b.w > 0 {
+		return .Invalid_Unread;
+	}
+	if b.r > 0 {
+		b.r -= 1;
+	} else {
+		// b.r == 0 && b.w == 0
+		b.w = 1;
+	}
+	b.buf[b.r] = byte(b.last_byte);
+	b.last_byte = -1;
+	b.last_rune_size = -1;
+	return nil;
+}
+
+// reader_read_rune reads a single UTF-8 encoded unicode character
+// and returns the rune and its size in bytes
+// If the encoded rune is invalid, it consumes one byte and returns utf8.RUNE_ERROR (U+FFFD) with a size of 1
+reader_read_rune :: proc(b: ^Reader) -> (r: rune, size: int, err: io.Error) {
+	for b.r+utf8.UTF_MAX > b.w &&
+	    !utf8.full_rune(b.buf[b.r:b.w]) &&
+	    b.err == nil &&
+	    b.w-b.w < len(b.buf) {
+		if err = _reader_read_new_chunk(b); err != nil {
+			return;
+		}
+	}
+
+	b.last_rune_size = -1;
+	if b.r == b.w {
+		err = _reader_consume_err(b);
+		return;
+	}
+	r, size = rune(b.buf[b.r]), 1;
+	if r >= utf8.RUNE_SELF {
+		r, size = utf8.decode_rune(b.buf[b.r : b.w]);
+	}
+	b.r += size;
+	b.last_byte = int(b.buf[b.r-1]);
+	b.last_rune_size = size;
+	return;
+}
+
+// reader_unread_rune unreads the last rune. Only the most recently read rune can be unread
+reader_unread_rune :: proc(b: ^Reader) -> io.Error {
+	if b.last_rune_size < 0 || b.r < b.last_rune_size {
+		return .Invalid_Unread;
+	}
+	b.r -= b.last_rune_size;
+	b.last_byte = -1;
+	b.last_rune_size = -1;
+	return nil;
+}
+
+reader_write_to :: proc(b: ^Reader, w: io.Writer) -> (n: i64, err: io.Error) {
+	write_buf :: proc(b: ^Reader, w: io.Writer) -> (i64, io.Error) {
+		n, err := io.write(w, b.buf[b.r:b.w]);
+		if n < 0 {
+			return 0, .Negative_Write;
+		}
+		b.r += n;
+		return i64(n), err;
+	}
+
+	n, err = write_buf(b, w);
+	if err != nil {
+		return;
+	}
+
+	m: i64;
+	if nr, ok := io.to_writer_to(b.rd); ok {
+		m, err = io.write_to(nr, w);
+		n += m;
+		return n, err;
+	}
+
+	if nw, ok := io.to_reader_from(w); ok {
+		m, err = io.read_from(nw, b.rd);
+		n += m;
+		return n, err;
+	}
+
+	if b.w-b.r < len(b.buf) {
+		if err = _reader_read_new_chunk(b); err != nil {
+			return;
+		}
+	}
+
+	for b.r < b.w {
+		m, err = write_buf(b, w);
+		n += m;
+		if err != nil {
+			return;
+		}
+		if err = _reader_read_new_chunk(b); err != nil {
+			return;
+		}
+	}
+
+	if b.err == .EOF {
+		b.err = nil;
+	}
+
+	err = _reader_consume_err(b);
+	return;
+}
+
+
+
+// reader_to_stream converts a Reader into an io.Stream
+reader_to_stream :: proc(b: ^Reader) -> (s: io.Stream) {
+	s.stream_data = b;
+	s.stream_vtable = _reader_vtable;
+	return;
+}
+
+
+
+@(private)
+_reader_vtable := &io.Stream_VTable{
+	impl_destroy = proc(s: io.Stream) -> io.Error {
+		b := (^Reader)(s.stream_data);
+		reader_destroy(b);
+		return nil;
+	},
+	impl_read = proc(s: io.Stream, p: []byte) -> (n: int, err: io.Error) {
+		b := (^Reader)(s.stream_data);
+		return reader_read(b, p);
+	},
+	impl_read_byte = proc(s: io.Stream) -> (c: byte, err: io.Error) {
+		b := (^Reader)(s.stream_data);
+		return reader_read_byte(b);
+	},
+	impl_unread_byte = proc(s: io.Stream) -> io.Error {
+		b := (^Reader)(s.stream_data);
+		return reader_unread_byte(b);
+	},
+	impl_read_rune = proc(s: io.Stream) -> (r: rune, size: int, err: io.Error) {
+		b := (^Reader)(s.stream_data);
+		return reader_read_rune(b);
+	},
+	impl_unread_rune = proc(s: io.Stream) -> io.Error {
+		b := (^Reader)(s.stream_data);
+		return reader_unread_rune(b);
+	},
+	impl_write_to = proc(s: io.Stream, w: io.Writer) -> (n: i64, err: io.Error) {
+		b := (^Reader)(s.stream_data);
+		return reader_write_to(b, w);
+	},
+};
+
+
+
+//
+// Utility procedures
+//
+
+
+// reader_read_slice reads until the first occurrence of delim from the reader
+// It returns a slice pointing at the bytes in the buffer
+// The bytes stop being valid at the next read
+// If reader_read_slice encounters an error before finding a delimiter
+// reader_read_slice fails with error .Buffer_Full if the buffer fills without a delim
+// Because the data returned from reader_read_slice will be overwritten on the
+// next IO operation, reader_read_bytes or reader_read_string is usually preferred
+//
+// reader_read_slice returns err != nil if and only if line does not end in delim
+//
+reader_read_slice :: proc(b: ^Reader, delim: byte) -> (line: []byte, err: io.Error) {
+	s := 0;
+	for {
+		if i := bytes.index_byte(b.buf[b.r+s : b.w], delim); i >= 0 {
+			i += s;
+			line = b.buf[b.r:][:i+1];
+			b.r += i + 1;
+			break;
+		}
+
+		if b.err != nil {
+			line = b.buf[b.r : b.w];
+			b.r = b.w;
+			err = _reader_consume_err(b);
+			break;
+		}
+
+		if reader_buffered(b) >= len(b.buf) {
+			b.r = b.w;
+			line = b.buf;
+			err = .Buffer_Full;
+			break;
+		}
+
+		s = b.w - b.r;
+
+		if err = _reader_read_new_chunk(b); err != nil {
+			break;
+		}
+	}
+
+	if i := len(line)-1; i >= 0 {
+		b.last_byte = int(line[i]);
+		b.last_rune_size = -1;
+	}
+
+	return;
+}
+
+// reader_read_bytes reads until the first occurrence of delim from the Reader
+// It returns an allocated slice containing the data up to and including the delimiter
+reader_read_bytes :: proc(b: ^Reader, delim: byte, allocator := context.allocator) -> (buf: []byte, err: io.Error) {
+	full: [dynamic]byte;
+	full.allocator = allocator;
+
+	frag: []byte;
+	for {
+		e: io.Error;
+		frag, e = reader_read_slice(b, delim);
+		if e == nil {
+			break;
+		}
+		if e != .Buffer_Full {
+			err = e;
+			break;
+		}
+
+		append(&full, ..frag);
+	}
+	append(&full, ..frag);
+	return full[:], err;
+}
+
+// reader_read_string reads until the first occurrence of delim from the Reader
+// It returns an allocated string containing the data up to and including the delimiter
+reader_read_string :: proc(b: ^Reader, delim: byte, allocator := context.allocator) -> (string, io.Error) {
+	buf, err := reader_read_bytes(b, delim, allocator);
+	return string(buf), err;
+}

core/bufio/scanner.odin

@@ -0,0 +1,340 @@
+package bufio
+
+import "core:bytes"
+import "core:io"
+import "core:mem"
+import "core:unicode/utf8"
+import "intrinsics"
+
+// Extra errors returns by scanning procedures
+Scanner_Extra_Error :: enum i32 {
+	Negative_Advance,
+	Advanced_Too_Far,
+	Bad_Read_Count,
+	Too_Long,
+	Too_Short,
+}
+
+Scanner_Error :: union {
+	io.Error,
+	Scanner_Extra_Error,
+}
+
+// Split_Proc is the signature of the split procedure used to tokenize the input.
+Split_Proc :: proc(data: []byte, at_eof: bool) -> (advance: int, token: []byte, err: Scanner_Error, final_token: bool);
+
+Scanner :: struct {
+	r:              io.Reader,
+	split:          Split_Proc,
+
+	buf:            [dynamic]byte,
+	max_token_size: int,
+	start:          int,
+	end:            int,
+	token:          []byte,
+
+	_err: Scanner_Error,
+	max_consecutive_empty_reads:  int,
+	successive_empty_token_count: int,
+	scan_called: bool,
+	done:        bool,
+}
+
+DEFAULT_MAX_SCAN_TOKEN_SIZE :: 1<<16;
+
+@(private)
+_INIT_BUF_SIZE :: 4096;
+
+scanner_init :: proc(s: ^Scanner, r: io.Reader, buf_allocator := context.allocator) -> ^Scanner {
+	s.r = r;
+	s.split = scan_lines;
+	s.max_token_size = DEFAULT_MAX_SCAN_TOKEN_SIZE;
+	s.buf.allocator = buf_allocator;
+	return s;
+}
+scanner_init_with_buffer :: proc(s: ^Scanner, r: io.Reader, buf: []byte) -> ^Scanner {
+	s.r = r;
+	s.split = scan_lines;
+	s.max_token_size = DEFAULT_MAX_SCAN_TOKEN_SIZE;
+	s.buf = mem.buffer_from_slice(buf);
+	resize(&s.buf, cap(s.buf));
+	return s;
+}
+scanner_destroy :: proc(s: ^Scanner) {
+	delete(s.buf);
+}
+
+
+// Returns the first non-EOF error that was encounted by the scanner
+scanner_error :: proc(s: ^Scanner) -> Scanner_Error {
+	switch s._err {
+	case .EOF, .None:
+		return nil;
+	}
+	return s._err;
+}
+
+// Returns the most recent token created by scanner_scan.
+// The underlying array may point to data that may be overwritten
+// by another call to scanner_scan.
+// Treat the returned value as if it is immutable.
+scanner_bytes :: proc(s: ^Scanner) -> []byte {
+	return s.token;
+}
+
+// Returns the most recent token created by scanner_scan.
+// The underlying array may point to data that may be overwritten
+// by another call to scanner_scan.
+// Treat the returned value as if it is immutable.
+scanner_text :: proc(s: ^Scanner) -> string {
+	return string(s.token);
+}
+
+// scanner_scan advances the scanner
+scanner_scan :: proc(s: ^Scanner) -> bool {
+	set_err :: proc(s: ^Scanner, err: Scanner_Error) {
+		err := err;
+		if err == .None {
+			err = nil;
+		}
+		switch s._err {
+		case nil, .EOF:
+			s._err = err;
+		}
+	}
+
+	if s.done {
+		return false;
+	}
+	s.scan_called = true;
+
+	for {
+		// Check if a token is possible with what is available
+		// Allow the split procedure to recover if it fails
+		if s.start < s.end || s._err != nil {
+			advance, token, err, final_token := s.split(s.buf[s.start:s.end], s._err != nil);
+			if final_token {
+				s.token = token;
+				s.done = true;
+				return true;
+			}
+			if err != nil {
+				set_err(s, err);
+				return false;
+			}
+
+			// Do advance
+			if advance < 0 {
+				set_err(s, .Negative_Advance);
+				return false;
+			}
+			if advance > s.end-s.start {
+				set_err(s, .Advanced_Too_Far);
+				return false;
+			}
+			s.start += advance;
+
+			s.token = token;
+			if s.token != nil {
+				if s._err == nil || advance > 0 {
+					s.successive_empty_token_count = 0;
+				} else {
+					s.successive_empty_token_count += 1;
+
+					if s.max_consecutive_empty_reads <= 0 {
+						s.max_consecutive_empty_reads = DEFAULT_MAX_CONSECUTIVE_EMPTY_READS;
+					}
+					if s.successive_empty_token_count > s.max_consecutive_empty_reads {
+						set_err(s, .No_Progress);
+						return false;
+					}
+				}
+				return true;
+			}
+		}
+
+		// If an error is hit, no token can be created
+		if s._err != nil {
+			s.start = 0;
+			s.end = 0;
+			return false;
+		}
+
+		// More data must be required to be read
+		if s.start > 0 && (s.end == len(s.buf) || s.start > len(s.buf)/2) {
+			copy(s.buf[:], s.buf[s.start:s.end]);
+			s.end -= s.start;
+			s.start = 0;
+		}
+
+		could_be_too_short := false;
+
+		// Resize the buffer if full
+		if s.end == len(s.buf) {
+			if s.max_token_size <= 0 {
+				s.max_token_size = DEFAULT_MAX_SCAN_TOKEN_SIZE;
+			}
+			if len(s.buf) >= s.max_token_size {
+				set_err(s, .Too_Long);
+				return false;
+			}
+			// overflow check
+			new_size := _INIT_BUF_SIZE;
+			if len(s.buf) > 0 {
+				overflowed: bool;
+				if new_size, overflowed = intrinsics.overflow_mul(len(s.buf), 2); overflowed {
+					set_err(s, .Too_Long);
+					return false;
+				}
+			}
+
+			old_size := len(s.buf);
+			new_size = min(new_size, s.max_token_size);
+			resize(&s.buf, new_size);
+			s.end -= s.start;
+			s.start = 0;
+
+			could_be_too_short = old_size >= len(s.buf);
+
+		}
+
+		// Read data into the buffer
+		loop := 0;
+		for {
+			n, err := io.read(s.r, s.buf[s.end:len(s.buf)]);
+			if n < 0 || len(s.buf)-s.end < n {
+				set_err(s, .Bad_Read_Count);
+				break;
+			}
+			s.end += n;
+			if err != nil {
+				set_err(s, err);
+				break;
+			}
+			if n > 0 {
+				s.successive_empty_token_count = 0;
+				break;
+			}
+			loop += 1;
+
+			if s.max_consecutive_empty_reads <= 0 {
+				s.max_consecutive_empty_reads = DEFAULT_MAX_CONSECUTIVE_EMPTY_READS;
+			}
+			if loop > s.max_consecutive_empty_reads {
+				if could_be_too_short {
+					set_err(s, .Too_Short);
+				} else {
+					set_err(s, .No_Progress);
+				}
+				break;
+			}
+		}
+	}
+}
+
+scan_bytes :: proc(data: []byte, at_eof: bool) -> (advance: int, token: []byte, err: Scanner_Error, final_token: bool) {
+	if at_eof && len(data) == 0 {
+		return;
+	}
+	return 1, data[0:1], nil, false;
+}
+
+scan_runes :: proc(data: []byte, at_eof: bool) -> (advance: int, token: []byte, err: Scanner_Error, final_token: bool) {
+	if at_eof && len(data) == 0 {
+		return;
+	}
+
+	if data[0] < utf8.RUNE_SELF {
+		advance = 1;
+		token = data[0:1];
+		return;
+	}
+
+	_, width := utf8.decode_rune(data);
+	if width > 1 {
+		advance = width;
+		token = data[0:width];
+		return;
+	}
+
+	if !at_eof && !utf8.full_rune(data) {
+		return;
+	}
+
+	@thread_local ERROR_RUNE := []byte{0xef, 0xbf, 0xbd};
+
+	advance = 1;
+	token = ERROR_RUNE;
+	return;
+}
+
+scan_words :: proc(data: []byte, at_eof: bool) -> (advance: int, token: []byte, err: Scanner_Error, final_token: bool) {
+	is_space :: proc "contextless" (r:  rune) -> bool {
+		switch r {
+		// lower ones
+		case ' ', '\t', '\n', '\v', '\f', '\r':
+			return true;
+		case '\u0085', '\u00a0':
+			return true;
+		// higher ones
+		case '\u2000' ..= '\u200a':
+			return true;
+		case '\u1680', '\u2028', '\u2029', '\u202f', '\u205f', '\u3000':
+			return true;
+		}
+		return false;
+	}
+
+	// skip spaces at the beginning
+	start := 0;
+	for width := 0; start < len(data); start += width {
+		r: rune;
+		r, width = utf8.decode_rune(data[start:]);
+		if !is_space(r) {
+			break;
+		}
+	}
+
+	for width, i := 0, start; i < len(data); i += width {
+		r: rune;
+		r, width = utf8.decode_rune(data[i:]);
+		if is_space(r) {
+			advance = i+width;
+			token = data[start:i];
+			return;
+		}
+	}
+
+	if at_eof && len(data) > start {
+		advance = len(data);
+		token = data[start:];
+		return;
+	}
+
+	advance = start;
+	return;
+}
+
+scan_lines :: proc(data: []byte, at_eof: bool) -> (advance: int, token: []byte, err: Scanner_Error, final_token: bool) {
+	trim_carriage_return :: proc "contextless" (data: []byte) -> []byte {
+		if len(data) > 0 && data[len(data)-1] == '\r' {
+			return data[0:len(data)-1];
+		}
+		return data;
+	}
+
+	if at_eof && len(data) == 0 {
+		return;
+	}
+	if i := bytes.index_byte(data, '\n'); i >= 0 {
+		advance = i+1;
+		token = trim_carriage_return(data[0:i]);
+		return;
+	}
+
+	if at_eof {
+		advance = len(data);
+		token = trim_carriage_return(data);
+	}
+	return;
+}

core/bufio/writer.odin

@@ -0,0 +1,261 @@
+package bufio
+
+import "core:io"
+import "core:mem"
+import "core:unicode/utf8"
+// import "core:bytes"
+
+// Writer is a buffered wrapper for an io.Writer
+Writer :: struct {
+	buf:            []byte,
+	buf_allocator:  mem.Allocator,
+
+	wr: io.Writer,
+	n: int,
+
+	err: io.Error,
+
+	max_consecutive_empty_writes: int,
+
+}
+
+writer_init :: proc(b: ^Writer, wr: io.Writer, size: int = DEFAULT_BUF_SIZE, allocator := context.allocator) {
+	size := size;
+	size = max(size, MIN_READ_BUFFER_SIZE);
+	writer_reset(b, wr);
+	b.buf_allocator = allocator;
+	b.buf = make([]byte, size, allocator);
+}
+
+writer_init_with_buf :: proc(b: ^Writer, wr: io.Writer, buf: []byte) {
+	writer_reset(b, wr);
+	b.buf_allocator = {};
+	b.buf = buf;
+}
+
+// writer_destroy destroys the underlying buffer with its associated allocator IFF that allocator has been set
+writer_destroy :: proc(b: ^Writer) {
+	delete(b.buf, b.buf_allocator);
+	b^ = {};
+}
+
+// writer_size returns the size of underlying buffer in bytes
+writer_size :: proc(b: ^Writer) -> int {
+	return len(b.buf);
+}
+
+writer_reset :: proc(b: ^Writer, w: io.Writer) {
+	b.wr = w;
+	b.n = 0;
+	b.err = nil;
+}
+
+
+// writer_flush writes any buffered data into the underlying io.Writer
+writer_flush :: proc(b: ^Writer) -> io.Error {
+	if b.err != nil {
+		return b.err;
+	}
+	if b.n == 0 {
+		return nil;
+	}
+
+	n, err := io.write(b.wr, b.buf[0:b.n]);
+	if n < b.n && err == nil {
+		err = .Short_Write;
+	}
+	if err != nil {
+		if n > 0 && n < b.n {
+			copy(b.buf[:b.n-n], b.buf[n : b.n]);
+		}
+		b.n -= n;
+		b.err = err;
+		return err;
+	}
+	b.n = 0;
+	return nil;
+}
+
+// writer_available returns how many bytes are unused in the buffer
+writer_available :: proc(b: ^Writer) -> int {
+	return len(b.buf) - b.n;
+}
+
+// writer_buffered returns the number of bytes that have been writted into the current buffer
+writer_buffered :: proc(b: ^Writer) -> int {
+	return b.n;
+}
+
+// writer_write writes the contents of p into the buffer
+// It returns the number of bytes written
+// If n < len(p), it will return an error explaining why the write is short
+writer_write :: proc(b: ^Writer, p: []byte) -> (n: int, err: io.Error) {
+	p := p;
+	for len(p) > writer_available(b) && b.err == nil {
+		m: int;
+		if writer_buffered(b) == 0 {
+			m, b.err = io.write(b.wr, p);
+		} else {
+			m = copy(b.buf[b.n:], p);
+			b.n += m;
+			writer_flush(b);
+		}
+		n += m;
+		p = p[m:];
+	}
+	if b.err != nil {
+		return n, b.err;
+	}
+	m := copy(b.buf[b.n:], p);
+	b.n += m;
+	m += n;
+	return m, nil;
+}
+
+// writer_write_byte writes a single byte
+writer_write_byte :: proc(b: ^Writer, c: byte) -> io.Error {
+	if b.err != nil {
+		return b.err;
+	}
+	if writer_available(b) <= 0 && writer_flush(b) != nil {
+		return b.err;
+	}
+	b.buf[b.n] = c;
+	b.n += 1;
+	return nil;
+}
+
+// writer_write_rune writes a single unicode code point, and returns the number of bytes written with any error
+writer_write_rune :: proc(b: ^Writer, r: rune) -> (size: int, err: io.Error) {
+	if r < utf8.RUNE_SELF {
+		err = writer_write_byte(b, byte(r));
+		size = 0 if err != nil else 1;
+		return;
+	}
+	if b.err != nil {
+		return 0, b.err;
+	}
+
+	buf: [4]u8;
+
+	n := writer_available(b);
+	if n < utf8.UTF_MAX {
+		writer_flush(b);
+		if b.err != nil {
+			return 0, b.err;
+		}
+		n = writer_available(b);
+		if n < utf8.UTF_MAX {
+			// this only happens if the buffer is very small
+			w: int;
+			buf, w = utf8.encode_rune(r);
+			return writer_write(b, buf[:w]);
+		}
+	}
+
+	buf, size = utf8.encode_rune(r);
+	copy(b.buf[b.n:], buf[:size]);
+	b.n += size;
+	return;
+}
+
+// writer_write writes a string into the buffer
+// It returns the number of bytes written
+// If n < len(p), it will return an error explaining why the write is short
+writer_write_string :: proc(b: ^Writer, s: string) -> (int, io.Error) {
+	return writer_write(b, transmute([]byte)s);
+}
+
+// writer_read_from is to support io.Reader_From types
+// If the underlying writer supports the io,read_from, and b has no buffered data yet,
+// this procedure calls the underlying read_from implementation without buffering
+writer_read_from :: proc(b: ^Writer, r: io.Reader) -> (n: i64, err: io.Error) {
+	if b.err != nil {
+		return 0, b.err;
+	}
+	if writer_buffered(b) == 0 {
+		if w, ok := io.to_reader_from(b.wr); !ok {
+			n, err = io.read_from(w, r);
+			b.err = err;
+			return;
+		}
+	}
+
+	for {
+		if writer_available(b) == 0 {
+			if ferr := writer_flush(b); ferr != nil {
+				return n, ferr;
+			}
+		}
+		if b.max_consecutive_empty_writes <= 0 {
+			b.max_consecutive_empty_writes = DEFAULT_MAX_CONSECUTIVE_EMPTY_READS;
+		}
+
+		m: int;
+		nr := 0;
+		for nr < b.max_consecutive_empty_writes {
+			m, err = io.read(r, b.buf[b.n:]);
+			if m != 0 || err != nil {
+				break;
+			}
+			nr += 1;
+		}
+		if nr == b.max_consecutive_empty_writes {
+			return n, .No_Progress;
+		}
+		b.n += m;
+		n += i64(m);
+		if err != nil {
+			break;
+		}
+	}
+
+	if err == .EOF {
+		if writer_available(b) == 0 {
+			err = writer_flush(b);
+		} else {
+			err = nil;
+		}
+	}
+	return;
+}
+
+
+
+// writer_to_stream converts a Writer into an io.Stream
+writer_to_stream :: proc(b: ^Writer) -> (s: io.Stream) {
+	s.stream_data = b;
+	s.stream_vtable = _writer_vtable;
+	return;
+}
+
+
+
+@(private)
+_writer_vtable := &io.Stream_VTable{
+	impl_destroy = proc(s: io.Stream) -> io.Error {
+		b := (^Writer)(s.stream_data);
+		writer_destroy(b);
+		return nil;
+	},
+	impl_flush = proc(s: io.Stream)  -> io.Error {
+		b := (^Writer)(s.stream_data);
+		return writer_flush(b);
+	},
+	impl_write = proc(s: io.Stream, p: []byte) -> (n: int, err: io.Error) {
+		b := (^Writer)(s.stream_data);
+		return writer_write(b, p);
+	},
+	impl_write_byte = proc(s: io.Stream, c: byte) -> io.Error {
+		b := (^Writer)(s.stream_data);
+		return writer_write_byte(b, c);
+	},
+	impl_write_rune = proc(s: io.Stream, r: rune) -> (int, io.Error) {
+		b := (^Writer)(s.stream_data);
+		return writer_write_rune(b, r);
+	},
+	impl_read_from = proc(s: io.Stream, r: io.Reader) -> (n: i64, err: io.Error) {
+		b := (^Writer)(s.stream_data);
+		return writer_read_from(b, r);
+	},
+};

core/builtin/builtin.odin

@@ -0,0 +1,120 @@
+// This is purely for documentation
+package builtin
+
+nil   :: nil;
+false :: 0!==0;
+true  :: 0==0;
+
+ODIN_OS      :: ODIN_OS;
+ODIN_ARCH    :: ODIN_ARCH;
+ODIN_ENDIAN  :: ODIN_ENDIAN;
+ODIN_VENDOR  :: ODIN_VENDOR;
+ODIN_VERSION :: ODIN_VERSION;
+ODIN_ROOT    :: ODIN_ROOT;
+ODIN_DEBUG   :: ODIN_DEBUG;
+
+byte :: u8; // alias
+
+bool          :: bool;
+b8            :: b8;
+b16           :: b16;
+b32           :: b32;
+b64           :: b64;
+
+i8            :: i8;
+u8            :: u8;
+i16           :: i16;
+u16           :: u16;
+i32           :: i32;
+u32           :: u32;
+i64           :: i64;
+u64           :: u64;
+
+i128          :: i128;
+u128          :: u128;
+
+rune          :: rune;
+
+f16           :: f16;
+f32           :: f32;
+f64           :: f64;
+
+complex32     :: complex32;
+complex64     :: complex64;
+complex128    :: complex128;
+
+quaternion64  :: quaternion64;
+quaternion128 :: quaternion128;
+quaternion256 :: quaternion256;
+
+int           :: int;
+uint          :: uint;
+uintptr       :: uintptr;
+
+rawptr        :: rawptr;
+string        :: string;
+cstring       :: cstring;
+any           :: any;
+
+typeid        :: typeid;
+
+// Endian Specific Types
+i16le         :: i16le;
+u16le         :: u16le;
+i32le         :: i32le;
+u32le         :: u32le;
+i64le         :: i64le;
+u64le         :: u64le;
+i128le        :: i128le;
+u128le        :: u128le;
+
+i16be         :: i16be;
+u16be         :: u16be;
+i32be         :: i32be;
+u32be         :: u32be;
+i64be         :: i64be;
+u64be         :: u64be;
+i128be        :: i128be;
+u128be        :: u128be;
+
+
+f16le         :: f16le;
+f32le         :: f32le;
+f64le         :: f64le;
+
+f16be         :: f16be;
+f32be         :: f32be;
+f64be         :: f64be;
+
+
+
+// Procedures
+len :: proc(array: Array_Type) -> int ---
+cap :: proc(array: Array_Type) -> int ---
+
+size_of      :: proc($T: typeid) -> int ---
+align_of     :: proc($T: typeid) -> int ---
+offset_of    :: proc($T: typeid) -> uintptr ---
+type_of      :: proc(x: expr) -> type ---
+type_info_of :: proc($T: typeid) -> ^runtime.Type_Info ---
+typeid_of    :: proc($T: typeid) -> typeid ---
+
+swizzle :: proc(x: [N]T, indices: ..int) -> [len(indices)]T ---
+
+complex    :: proc(real, imag: Float) -> Complex_Type ---
+quaternion :: proc(real, imag, jmag, kmag: Float) -> Quaternion_Type ---
+real       :: proc(value: Complex_Or_Quaternion) -> Float ---
+imag       :: proc(value: Complex_Or_Quaternion) -> Float ---
+jmag       :: proc(value: Quaternion) -> Float ---
+kmag       :: proc(value: Quaternion) -> Float ---
+conj       :: proc(value: Complex_Or_Quaternion) -> Complex_Or_Quaternion ---
+
+expand_to_tuple :: proc(value: Struct_Or_Array) -> (A, B, C, ...) ---
+
+min   :: proc(values: ..T) -> T ---
+max   :: proc(values: ..T) -> T ---
+abs   :: proc(value: T) -> T ---
+clamp :: proc(value, minimum, maximum: T) -> T ---
+
+soa_zip :: proc(slices: ...) -> #soa[]Struct ---
+soa_unzip :: proc(value: $S/#soa[]$E) -> (slices: ...) ---

core/bytes/buffer.odin

@@ -0,0 +1,433 @@
+package bytes
+
+import "core:io"
+import "core:unicode/utf8"
+
+MIN_READ :: 512;
+
+@(private)
+SMALL_BUFFER_SIZE :: 64;
+
+// A Buffer is a variable-sized buffer of bytes with a io.Stream interface
+// The zero value for Buffer is an empty buffer ready to use.
+Buffer :: struct {
+	buf: [dynamic]byte,
+	off: int,
+	last_read: Read_Op,
+}
+
+@(private)
+Read_Op :: enum i8 {
+	Read       = -1,
+	Invalid    =  0,
+	Read_Rune1 =  1,
+	Read_Rune2 =  2,
+	Read_Rune3 =  3,
+	Read_Rune4 =  4,
+}
+
+
+buffer_init :: proc(b: ^Buffer, buf: []byte) {
+	resize(&b.buf, len(buf));
+	copy(b.buf[:], buf);
+}
+
+buffer_init_string :: proc(b: ^Buffer, s: string) {
+	resize(&b.buf, len(s));
+	copy(b.buf[:], s);
+}
+
+buffer_init_allocator :: proc(b: ^Buffer, len, cap: int, allocator := context.allocator) {
+	b.buf.allocator = allocator;
+	reserve(&b.buf, cap);
+	resize(&b.buf, len);
+}
+
+buffer_destroy :: proc(b: ^Buffer) {
+	delete(b.buf);
+	buffer_reset(b);
+}
+
+buffer_to_bytes :: proc(b: ^Buffer) -> []byte {
+	return b.buf[b.off:];
+}
+
+buffer_to_string :: proc(b: ^Buffer) -> string {
+	if b == nil {
+		return "<nil>";
+	}
+	return string(b.buf[b.off:]);
+}
+
+buffer_is_empty :: proc(b: ^Buffer) -> bool {
+	return len(b.buf) <= b.off;
+}
+
+buffer_length :: proc(b: ^Buffer) -> int {
+	return len(b.buf) - b.off;
+}
+
+buffer_capacity :: proc(b: ^Buffer) -> int {
+	return cap(b.buf);
+}
+
+buffer_reset :: proc(b: ^Buffer) {
+	clear(&b.buf);
+	b.off = 0;
+	b.last_read = .Invalid;
+}
+
+
+buffer_truncate :: proc(b: ^Buffer, n: int) {
+	if n == 0 {
+		buffer_reset(b);
+		return;
+	}
+	b.last_read = .Invalid;
+	if n < 0 || n > buffer_length(b) {
+		panic("bytes.truncate: truncation out of range");
+	}
+	resize(&b.buf, b.off+n);
+}
+
+@(private)
+_buffer_try_grow :: proc(b: ^Buffer, n: int) -> (int, bool) {
+	if l := len(b.buf); n <= cap(b.buf)-l {
+		resize(&b.buf, l+n);
+		return l, true;
+	}
+	return 0, false;
+}
+
+@(private)
+_buffer_grow :: proc(b: ^Buffer, n: int) -> int {
+	m := buffer_length(b);
+	if m == 0 && b.off != 0 {
+		buffer_reset(b);
+	}
+	if i, ok := _buffer_try_grow(b, n); ok {
+		return i;
+	}
+	if b.buf == nil && n <= SMALL_BUFFER_SIZE {
+		b.buf = make([dynamic]byte, n, SMALL_BUFFER_SIZE);
+		return 0;
+	}
+
+	c := cap(b.buf);
+	if n <= c/2 - m {
+		copy(b.buf[:], b.buf[b.off:]);
+	} else if c > max(int) - c - n {
+		panic("bytes.Buffer: too large");
+	} else {
+		resize(&b.buf, 2*c + n);
+		copy(b.buf[:], b.buf[b.off:]);
+	}
+	b.off = 0;
+	resize(&b.buf, m+n);
+	return m;
+}
+
+buffer_grow :: proc(b: ^Buffer, n: int) {
+	if n < 0 {
+		panic("bytes.buffer_grow: negative count");
+	}
+	m := _buffer_grow(b, n);
+	resize(&b.buf, m);
+}
+
+buffer_write_at :: proc(b: ^Buffer, p: []byte, offset: int) -> (n: int, err: io.Error) {
+	b.last_read = .Invalid;
+	if offset < 0 {
+		err = .Invalid_Offset;
+		return;
+	}
+	_, ok := _buffer_try_grow(b, offset+len(p));
+	if !ok {
+		_ = _buffer_grow(b, offset+len(p));
+	}
+	if len(b.buf) <= offset {
+		return 0, .Short_Write;
+	}
+	return copy(b.buf[offset:], p), nil;
+}
+
+
+buffer_write :: proc(b: ^Buffer, p: []byte) -> (n: int, err: io.Error) {
+	b.last_read = .Invalid;
+	m, ok := _buffer_try_grow(b, len(p));
+	if !ok {
+		m = _buffer_grow(b, len(p));
+	}
+	return copy(b.buf[m:], p), nil;
+}
+
+buffer_write_string :: proc(b: ^Buffer, s: string) -> (n: int, err: io.Error) {
+	b.last_read = .Invalid;
+	m, ok := _buffer_try_grow(b, len(s));
+	if !ok {
+		m = _buffer_grow(b, len(s));
+	}
+	return copy(b.buf[m:], s), nil;
+}
+
+buffer_write_byte :: proc(b: ^Buffer, c: byte) -> io.Error {
+	b.last_read = .Invalid;
+	m, ok := _buffer_try_grow(b, 1);
+	if !ok {
+		m = _buffer_grow(b, 1);
+	}
+	b.buf[m] = c;
+	return nil;
+}
+
+buffer_write_rune :: proc(b: ^Buffer, r: rune) -> (n: int, err: io.Error) {
+	if r < utf8.RUNE_SELF {
+		buffer_write_byte(b, byte(r));
+		return 1, nil;
+	}
+	b.last_read = .Invalid;
+	m, ok := _buffer_try_grow(b, utf8.UTF_MAX);
+	if !ok {
+		m = _buffer_grow(b, utf8.UTF_MAX);
+	}
+	res: [4]byte;
+	res, n = utf8.encode_rune(r);
+	copy(b.buf[m:][:utf8.UTF_MAX], res[:n]);
+	resize(&b.buf, m+n);
+	return;
+}
+
+buffer_next :: proc(b: ^Buffer, n: int) -> []byte {
+	n := n;
+	b.last_read = .Invalid;
+	m := buffer_length(b);
+	if n > m {
+		n = m;
+	}
+	data := b.buf[b.off : b.off + n];
+	b.off += n;
+	if n > 0 {
+		b.last_read = .Read;
+	}
+	return data;
+}
+
+buffer_read :: proc(b: ^Buffer, p: []byte) -> (n: int, err: io.Error) {
+	b.last_read = .Invalid;
+	if buffer_is_empty(b) {
+		buffer_reset(b);
+		if len(p) == 0 {
+			return 0, nil;
+		}
+		return 0, .EOF;
+	}
+	n = copy(p, b.buf[b.off:]);
+	b.off += n;
+	if n > 0 {
+		b.last_read = .Read;
+	}
+	return;
+}
+
+buffer_read_at :: proc(b: ^Buffer, p: []byte, offset: int) -> (n: int, err: io.Error) {
+	b.last_read = .Invalid;
+
+	if offset < 0 || offset >= len(b.buf) {
+		err = .Invalid_Offset;
+		return;
+	}
+
+	if 0 <= offset && offset < len(b.buf) {
+		n = copy(p, b.buf[offset:]);
+	}
+	if n > 0 {
+		b.last_read = .Read;
+	}
+	return;
+}
+
+
+buffer_read_byte :: proc(b: ^Buffer) -> (byte, io.Error) {
+	if buffer_is_empty(b) {
+		buffer_reset(b);
+		return 0, .EOF;
+	}
+	c := b.buf[b.off];
+	b.off += 1;
+	b.last_read = .Read;
+	return c, nil;
+}
+
+buffer_read_rune :: proc(b: ^Buffer) -> (r: rune, size: int, err: io.Error) {
+	if buffer_is_empty(b) {
+		buffer_reset(b);
+		return 0, 0, .EOF;
+	}
+	c := b.buf[b.off];
+	if c < utf8.RUNE_SELF {
+		b.off += 1;
+		b.last_read = .Read_Rune1;
+		return rune(c), 1, nil;
+	}
+	r, size = utf8.decode_rune(b.buf[b.off:]);
+	b.off += size;
+	b.last_read = Read_Op(i8(size));
+	return;
+}
+
+buffer_unread_byte :: proc(b: ^Buffer) -> io.Error {
+	if b.last_read == .Invalid {
+		return .Invalid_Unread;
+	}
+	b.last_read = .Invalid;
+	if b.off > 0 {
+		b.off -= 1;
+	}
+	return nil;
+}
+
+buffer_unread_rune :: proc(b: ^Buffer) -> io.Error {
+	if b.last_read <= .Invalid {
+		return .Invalid_Unread;
+	}
+	if b.off >= int(b.last_read) {
+		b.off -= int(i8(b.last_read));
+	}
+	b.last_read = .Invalid;
+	return nil;
+}
+
+
+buffer_read_bytes :: proc(b: ^Buffer, delim: byte) -> (line: []byte, err: io.Error) {
+	i := index_byte(b.buf[b.off:], delim);
+	end := b.off + i + 1;
+	if i < 0 {
+		end = len(b.buf);
+		err = .EOF;
+	}
+	line = b.buf[b.off:end];
+	b.off = end;
+	b.last_read = .Read;
+	return;
+}
+
+buffer_read_string :: proc(b: ^Buffer, delim: byte) -> (line: string, err: io.Error) {
+	slice: []byte;
+	slice, err = buffer_read_bytes(b, delim);
+	return string(slice), err;
+}
+
+buffer_write_to :: proc(b: ^Buffer, w: io.Writer) -> (n: i64, err: io.Error) {
+	b.last_read = .Invalid;
+	if byte_count := buffer_length(b); byte_count > 0 {
+		m, e := io.write(w, b.buf[b.off:]);
+		if m > byte_count {
+			panic("bytes.buffer_write_to: invalid io.write count");
+		}
+		b.off += m;
+		n = i64(m);
+		if e != nil {
+			err = e;
+			return;
+		}
+		if m != byte_count {
+			err = .Short_Write;
+			return;
+		}
+	}
+	buffer_reset(b);
+	return;
+}
+
+buffer_read_from :: proc(b: ^Buffer, r: io.Reader) -> (n: i64, err: io.Error) #no_bounds_check {
+	b.last_read = .Invalid;
+	for {
+		i := _buffer_grow(b, MIN_READ);
+		resize(&b.buf, i);
+		m, e := io.read(r, b.buf[i:cap(b.buf)]);
+		if m < 0 {
+			err = .Negative_Read;
+			return;
+		}
+
+		resize(&b.buf, i+m);
+		n += i64(m);
+		if e == .EOF {
+			return;
+		}
+		if e != nil {
+			err = e;
+			return;
+		}
+	}
+	return;
+}
+
+
+buffer_to_stream :: proc(b: ^Buffer) -> (s: io.Stream) {
+	s.stream_data = b;
+	s.stream_vtable = _buffer_vtable;
+	return;
+}
+
+@(private)
+_buffer_vtable := &io.Stream_VTable{
+	impl_size = proc(s: io.Stream) -> i64 {
+		b := (^Buffer)(s.stream_data);
+		return i64(buffer_capacity(b));
+	},
+	impl_read = proc(s: io.Stream, p: []byte) -> (n: int, err: io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_read(b, p);
+	},
+	impl_read_at = proc(s: io.Stream, p: []byte, offset: i64) -> (n: int, err: io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_read_at(b, p, int(offset));
+	},
+	impl_read_byte = proc(s: io.Stream) -> (byte, io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_read_byte(b);
+	},
+	impl_read_rune = proc(s: io.Stream) -> (r: rune, size: int, err: io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_read_rune(b);
+	},
+	impl_write = proc(s: io.Stream, p: []byte) -> (n: int, err: io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_write(b, p);
+	},
+	impl_write_at = proc(s: io.Stream, p: []byte, offset: i64) -> (n: int, err: io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_write_at(b, p, int(offset));
+	},
+	impl_write_byte = proc(s: io.Stream, c: byte) -> io.Error {
+		b := (^Buffer)(s.stream_data);
+		return buffer_write_byte(b, c);
+	},
+	impl_write_rune = proc(s: io.Stream, r: rune) -> (int, io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_write_rune(b, r);
+	},
+	impl_unread_byte = proc(s: io.Stream) -> io.Error {
+		b := (^Buffer)(s.stream_data);
+		return buffer_unread_byte(b);
+	},
+	impl_unread_rune = proc(s: io.Stream) -> io.Error {
+		b := (^Buffer)(s.stream_data);
+		return buffer_unread_rune(b);
+	},
+	impl_destroy = proc(s: io.Stream) -> io.Error {
+		b := (^Buffer)(s.stream_data);
+		buffer_destroy(b);
+		return nil;
+	},
+	impl_write_to = proc(s: io.Stream, w: io.Writer) -> (n: i64, err: io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_write_to(b, w);
+	},
+	impl_read_from = proc(s: io.Stream, r: io.Reader) -> (n: i64, err: io.Error) {
+		b := (^Buffer)(s.stream_data);
+		return buffer_read_from(b, r);
+	},
+};
+

core/bytes/reader.odin

@@ -0,0 +1,177 @@
+package bytes
+
+import "core:io"
+import "core:unicode/utf8"
+
+Reader :: struct {
+	s:         []byte, // read-only buffer
+	i:         i64,    // current reading index
+	prev_rune: int,    // previous reading index of rune or < 0
+}
+
+reader_init :: proc(r: ^Reader, s: []byte) {
+	r.s = s;
+	r.i = 0;
+	r.prev_rune = -1;
+}
+
+reader_to_stream :: proc(r: ^Reader) -> (s: io.Stream) {
+	s.stream_data = r;
+	s.stream_vtable = _reader_vtable;
+	return;
+}
+
+reader_length :: proc(r: ^Reader) -> int {
+	if r.i >= i64(len(r.s)) {
+		return 0;
+	}
+	return int(i64(len(r.s)) - r.i);
+}
+
+reader_size :: proc(r: ^Reader) -> i64 {
+	return i64(len(r.s));
+}
+
+reader_read :: proc(r: ^Reader, p: []byte) -> (n: int, err: io.Error) {
+	if r.i >= i64(len(r.s)) {
+		return 0, .EOF;
+	}
+	r.prev_rune = -1;
+	n = copy(p, r.s[r.i:]);
+	r.i += i64(n);
+	return;
+}
+reader_read_at :: proc(r: ^Reader, p: []byte, off: i64) -> (n: int, err: io.Error) {
+	if off < 0 {
+		return 0, .Invalid_Offset;
+	}
+	if off >= i64(len(r.s)) {
+		return 0, .EOF;
+	}
+	n = copy(p, r.s[off:]);
+	if n < len(p) {
+		err = .EOF;
+	}
+	return;
+}
+reader_read_byte :: proc(r: ^Reader) -> (byte, io.Error) {
+	r.prev_rune = -1;
+	if r.i >= i64(len(r.s)) {
+		return 0, .EOF;
+	}
+	b := r.s[r.i];
+	r.i += 1;
+	return b, nil;
+}
+reader_unread_byte :: proc(r: ^Reader) -> io.Error {
+	if r.i <= 0 {
+		return .Invalid_Unread;
+	}
+	r.prev_rune = -1;
+	r.i -= 1;
+	return nil;
+}
+reader_read_rune :: proc(r: ^Reader) -> (ch: rune, size: int, err: io.Error) {
+	if r.i >= i64(len(r.s)) {
+		r.prev_rune = -1;
+		return 0, 0, .EOF;
+	}
+	r.prev_rune = int(r.i);
+	if c := r.s[r.i]; c < utf8.RUNE_SELF {
+		r.i += 1;
+		return rune(c), 1, nil;
+	}
+	ch, size = utf8.decode_rune(r.s[r.i:]);
+	r.i += i64(size);
+	return;
+}
+reader_unread_rune :: proc(r: ^Reader) -> io.Error {
+	if r.i <= 0 {
+		return .Invalid_Unread;
+	}
+	if r.prev_rune < 0 {
+		return .Invalid_Unread;
+	}
+	r.i = i64(r.prev_rune);
+	r.prev_rune = -1;
+	return nil;
+}
+reader_seek :: proc(r: ^Reader, offset: i64, whence: io.Seek_From) -> (i64, io.Error) {
+	r.prev_rune = -1;
+	abs: i64;
+	switch whence {
+	case .Start:
+		abs = offset;
+	case .Current:
+		abs = r.i + offset;
+	case .End:
+		abs = i64(len(r.s)) + offset;
+	case:
+		return 0, .Invalid_Whence;
+	}
+
+	if abs < 0 {
+		return 0, .Invalid_Offset;
+	}
+	r.i = abs;
+	return abs, nil;
+}
+reader_write_to :: proc(r: ^Reader, w: io.Writer) -> (n: i64, err: io.Error) {
+	r.prev_rune = -1;
+	if r.i >= i64(len(r.s)) {
+		return 0, nil;
+	}
+	s := r.s[r.i:];
+	m: int;
+	m, err = io.write(w, s);
+	if m > len(s) {
+		panic("bytes.Reader.write_to: invalid io.write_string count");
+	}
+	r.i += i64(m);
+	n = i64(m);
+	if m != len(s) && err == nil {
+		err = .Short_Write;
+	}
+	return;
+}
+
+
+@(private)
+_reader_vtable := &io.Stream_VTable{
+	impl_size = proc(s: io.Stream) -> i64 {
+		r := (^Reader)(s.stream_data);
+		return reader_size(r);
+	},
+	impl_read = proc(s: io.Stream, p: []byte) -> (n: int, err: io.Error) {
+		r := (^Reader)(s.stream_data);
+		return reader_read(r, p);
+	},
+	impl_read_at = proc(s: io.Stream, p: []byte, off: i64) -> (n: int, err: io.Error) {
+		r := (^Reader)(s.stream_data);
+		return reader_read_at(r, p, off);
+	},
+	impl_read_byte = proc(s: io.Stream) -> (byte, io.Error) {
+		r := (^Reader)(s.stream_data);
+		return reader_read_byte(r);
+	},
+	impl_unread_byte = proc(s: io.Stream) -> io.Error {
+		r := (^Reader)(s.stream_data);
+		return reader_unread_byte(r);
+	},
+	impl_read_rune = proc(s: io.Stream) -> (ch: rune, size: int, err: io.Error) {
+		r := (^Reader)(s.stream_data);
+		return reader_read_rune(r);
+	},
+	impl_unread_rune = proc(s: io.Stream) -> io.Error {
+		r := (^Reader)(s.stream_data);
+		return reader_unread_rune(r);
+	},
+	impl_seek = proc(s: io.Stream, offset: i64, whence: io.Seek_From) -> (i64, io.Error) {
+		r := (^Reader)(s.stream_data);
+		return reader_seek(r, offset, whence);
+	},
+	impl_write_to = proc(s: io.Stream, w: io.Writer) -> (n: i64, err: io.Error) {
+		r := (^Reader)(s.stream_data);
+		return reader_write_to(r, w);
+	},
+};

core/c.odin

@@ -1,38 +0,0 @@
-CHAR_BIT :: 8;
-
-c_bool   :: #alias bool;
-c_char   :: #alias u8;
-c_byte   :: #alias u8;
-c_schar  :: #alias i8;
-c_uchar  :: #alias u8;
-c_short  :: #alias i16;
-c_ushort :: #alias u16;
-c_int    :: #alias i32;
-c_uint   :: #alias u32;
-
-when ODIN_OS == "windows" || size_of(rawptr) == 4 {
-	c_long :: #alias i32;
-} else {
-	c_long :: #alias i64;
-}
-
-when ODIN_OS == "windows" || size_of(rawptr) == 4 {
-	c_ulong :: #alias u32;
-} else {
-	c_ulong :: #alias u64;
-}
-
-c_longlong       :: #alias i64;
-c_ulonglong      :: #alias u64;
-c_float          :: #alias f32;
-c_double         :: #alias f64;
-c_complex_float  :: #alias complex64;
-c_complex_double :: #alias complex128;
-
-_ :: compile_assert(size_of(uintptr) == size_of(int));
-
-c_size_t    :: #alias uint;
-c_ssize_t   :: #alias int;
-c_ptrdiff_t :: #alias int;
-c_uintptr_t :: #alias uintptr;
-c_intptr_t  :: #alias int;

core/c/c.odin

@@ -0,0 +1,35 @@
+package c
+
+import b "core:builtin"
+
+CHAR_BIT :: 8;
+
+bool   :: b.bool;
+char   :: b.u8;
+byte   :: b.byte;
+schar  :: b.i8;
+uchar  :: b.u8;
+short  :: b.i16;
+ushort :: b.u16;
+int    :: b.i32;
+uint   :: b.u32;
+
+long  :: b.i32 when (ODIN_OS == "windows" || size_of(b.rawptr) == 4) else b.i64;
+ulong :: b.u32 when (ODIN_OS == "windows" || size_of(b.rawptr) == 4) else b.u64;
+
+longlong       :: b.i64;
+ulonglong      :: b.u64;
+float          :: b.f32;
+double         :: b.f64;
+complex_float  :: b.complex64;
+complex_double :: b.complex128;
+
+#assert(size_of(b.uintptr) == size_of(b.int));
+
+size_t    :: b.uint;
+ssize_t   :: b.int;
+ptrdiff_t :: b.int;
+uintptr_t :: b.uintptr;
+intptr_t  :: b.int;
+
+wchar_t :: b.u16 when (ODIN_OS == "windows") else b.u32;

core/c/frontend/preprocessor/const_expr.odin

@@ -0,0 +1,25 @@
+package c_frontend_preprocess
+
+import "core:c/frontend/tokenizer"
+
+const_expr :: proc(rest: ^^Token, tok: ^Token) -> i64 {
+	// TODO(bill): Handle const_expr correctly
+	// This is effectively a mini-parser
+
+	assert(rest != nil);
+	assert(tok != nil);
+	rest^ = tokenizer.new_eof(tok);
+	switch v in tok.val {
+	case i64:
+		return v;
+	case f64:
+		return i64(v);
+	case string:
+		return 0;
+	case []u16:
+		// TODO
+	case []u32:
+		// TODO
+	}
+	return 0;
+}

core/c/frontend/preprocessor/unquote.odin

@@ -0,0 +1,154 @@
+package c_frontend_preprocess
+
+import "core:unicode/utf8"
+
+unquote_char :: proc(str: string, quote: byte) -> (r: rune, multiple_bytes: bool, tail_string: string, success: bool) {
+	hex_to_int :: proc(c: byte) -> int {
+		switch c {
+		case '0'..='9': return int(c-'0');
+		case 'a'..='f': return int(c-'a')+10;
+		case 'A'..='F': return int(c-'A')+10;
+		}
+		return -1;
+	}
+	w: int;
+
+	if str[0] == quote && quote == '"' {
+		return;
+	} else if str[0] >= 0x80 {
+		r, w = utf8.decode_rune_in_string(str);
+		return r, true, str[w:], true;
+	} else if str[0] != '\\' {
+		return rune(str[0]), false, str[1:], true;
+	}
+
+	if len(str) <= 1 {
+		return;
+	}
+	s := str;
+	c := s[1];
+	s = s[2:];
+
+	switch c {
+	case: r = rune(c);
+
+	case 'a':  r = '\a';
+	case 'b':  r = '\b';
+	case 'e':  r = '\e';
+	case 'f':  r = '\f';
+	case 'n':  r = '\n';
+	case 'r':  r = '\r';
+	case 't':  r = '\t';
+	case 'v':  r = '\v';
+	case '\\': r = '\\';
+
+	case '"':  r = '"';
+	case '\'': r = '\'';
+
+	case '0'..='7':
+		v := int(c-'0');
+		if len(s) < 2 {
+			return;
+		}
+		for i in 0..<len(s) {
+			d := int(s[i]-'0');
+			if d < 0 || d > 7 {
+				return;
+			}
+			v = (v<<3) | d;
+		}
+		s = s[2:];
+		if v > 0xff {
+			return;
+		}
+		r = rune(v);
+
+	case 'x', 'u', 'U':
+		count: int;
+		switch c {
+		case 'x': count = 2;
+		case 'u': count = 4;
+		case 'U': count = 8;
+		}
+
+		if len(s) < count {
+			return;
+		}
+
+		for i in 0..<count {
+			d := hex_to_int(s[i]);
+			if d < 0 {
+				return;
+			}
+			r = (r<<4) | rune(d);
+		}
+		s = s[count:];
+		if c == 'x' {
+			break;
+		}
+		if r > utf8.MAX_RUNE {
+			return;
+		}
+		multiple_bytes = true;
+	}
+
+	success = true;
+	tail_string = s;
+	return;
+}
+
+unquote_string :: proc(lit: string, allocator := context.allocator) -> (res: string, allocated, success: bool) {
+	contains_rune :: proc(s: string, r: rune) -> int {
+		for c, offset in s {
+			if c == r {
+				return offset;
+			}
+		}
+		return -1;
+	}
+
+	assert(len(lit) >= 2);
+
+	s := lit;
+	quote := '"';
+
+	if s == `""` {
+		return "", false, true;
+	}
+
+	if contains_rune(s, '\n') >= 0 {
+		return s, false, false;
+	}
+
+	if contains_rune(s, '\\') < 0 && contains_rune(s, quote) < 0 {
+		if quote == '"' {
+			return s, false, true;
+		}
+	}
+	s = s[1:len(s)-1];
+
+
+	buf_len := 3*len(s) / 2;
+	buf := make([]byte, buf_len, allocator);
+	offset := 0;
+	for len(s) > 0 {
+		r, multiple_bytes, tail_string, ok := unquote_char(s, byte(quote));
+		if !ok {
+			delete(buf);
+			return s, false, false;
+		}
+		s = tail_string;
+		if r < 0x80 || !multiple_bytes {
+			buf[offset] = byte(r);
+			offset += 1;
+		} else {
+			b, w := utf8.encode_rune(r);
+			copy(buf[offset:], b[:w]);
+			offset += w;
+		}
+	}
+
+	new_string := string(buf[:offset]);
+
+	return new_string, true, true;
+}

core/c/frontend/tokenizer/doc.odin

@@ -0,0 +1,34 @@
+/*
+package demo
+
+import tokenizer "core:c/frontend/tokenizer"
+import preprocessor "core:c/frontend/preprocessor"
+import "core:fmt"
+
+main :: proc() {
+	t := &tokenizer.Tokenizer{};
+	tokenizer.init_defaults(t);
+
+	cpp := &preprocessor.Preprocessor{};
+	cpp.warn, cpp.err = t.warn, t.err;
+	preprocessor.init_lookup_tables(cpp);
+	preprocessor.init_default_macros(cpp);
+	cpp.include_paths = {"my/path/to/include"};
+
+	tok := tokenizer.tokenize_file(t, "the/source/file.c", 1);
+
+	tok = preprocessor.preprocess(cpp, tok);
+	if tok != nil {
+		for t := tok; t.kind != .EOF; t = t.next {
+			fmt.println(t.lit);
+		}
+	}
+
+	fmt.println("[Done]");
+}
+*/
+
+
+package c_frontend_tokenizer
+
+

core/c/frontend/tokenizer/hide_set.odin

@@ -0,0 +1,68 @@
+package c_frontend_tokenizer
+
+// NOTE(bill): This is a really dumb approach for a hide set,
+// but it's really simple and probably fast enough in practice
+
+
+Hide_Set :: struct {
+	next: ^Hide_Set,
+	name: string,
+}
+
+
+new_hide_set :: proc(name: string) -> ^Hide_Set {
+	hs := new(Hide_Set);
+	hs.name = name;
+	return hs;
+}
+
+hide_set_contains :: proc(hs: ^Hide_Set, name: string) -> bool {
+	for h := hs; h != nil; h = h.next {
+		if h.name == name {
+			return true;
+		}
+	}
+	return false;
+}
+
+
+hide_set_union :: proc(a, b: ^Hide_Set) -> ^Hide_Set {
+	head: Hide_Set;
+	curr := &head;
+
+	for h := a; h != nil; h = h.next {
+		curr.next = new_hide_set(h.name);
+		curr = curr.next;
+	}
+	curr.next = b;
+	return head.next;
+}
+
+
+hide_set_intersection :: proc(a, b: ^Hide_Set) -> ^Hide_Set {
+	head: Hide_Set;
+	curr := &head;
+
+	for h := a; h != nil; h = h.next {
+		if hide_set_contains(b, h.name) {
+			curr.next = new_hide_set(h.name);
+			curr = curr.next;
+		}
+	}
+	return head.next;
+}
+
+
+add_hide_set :: proc(tok: ^Token, hs: ^Hide_Set) -> ^Token {
+	head: Token;
+	curr := &head;
+
+	tok := tok;
+	for ; tok != nil; tok = tok.next {
+		t := copy_token(tok);
+		t.hide_set = hide_set_union(t.hide_set, hs);
+		curr.next = t;
+		curr = curr.next;
+	}
+	return head.next;
+}

core/c/frontend/tokenizer/token.odin

@@ -0,0 +1,169 @@
+package c_frontend_tokenizer
+
+
+Pos :: struct {
+	file:   string,
+	line:   int,
+	column: int,
+	offset: int,
+}
+
+Token_Kind :: enum {
+	Invalid,
+	Ident,
+	Punct,
+	Keyword,
+	Char,
+	String,
+	Number,
+	PP_Number,
+	Comment,
+	EOF,
+}
+
+File :: struct {
+	name: string,
+	id:   int,
+	src:  []byte,
+
+	display_name: string,
+	line_delta:   int,
+}
+
+
+Token_Type_Hint :: enum u8 {
+	None,
+
+	Int,
+	Long,
+	Long_Long,
+
+	Unsigned_Int,
+	Unsigned_Long,
+	Unsigned_Long_Long,
+
+	Float,
+	Double,
+	Long_Double,
+
+	UTF_8,
+	UTF_16,
+	UTF_32,
+	UTF_Wide,
+}
+
+Token_Value :: union {
+	i64,
+	f64,
+	string,
+	[]u16,
+	[]u32,
+}
+
+Token :: struct {
+	kind: Token_Kind,
+	next: ^Token,
+	lit: string,
+
+	pos:   Pos,
+	file:  ^File,
+	line_delta: int,
+	at_bol:     bool,
+	has_space:  bool,
+
+	type_hint: Token_Type_Hint,
+	val: Token_Value,
+	prefix: string,
+
+	// Preprocessor values
+	hide_set: ^Hide_Set,
+	origin:   ^Token,
+}
+
+Is_Keyword_Proc :: #type proc(tok: ^Token) -> bool;
+
+copy_token :: proc(tok: ^Token) -> ^Token {
+	t := new_clone(tok^);
+	t.next = nil;
+	return t;
+}
+
+new_eof :: proc(tok: ^Token) -> ^Token {
+	t := new_clone(tok^);
+	t.kind = .EOF;
+	t.lit = "";
+	return t;
+}
+
+default_is_keyword :: proc(tok: ^Token) -> bool {
+	if tok.kind == .Keyword {
+		return true;
+	}
+	if len(tok.lit) > 0 {
+		return default_keyword_set[tok.lit];
+	}
+	return false;
+}
+
+
+token_name := [Token_Kind]string {
+	.Invalid   = "invalid",
+	.Ident     = "ident",
+	.Punct     = "punct",
+	.Keyword   = "keyword",
+	.Char      = "char",
+	.String    = "string",
+	.Number    = "number",
+	.PP_Number = "preprocessor number",
+	.Comment   = "comment",
+	.EOF       = "eof",
+};
+
+default_keyword_set := map[string]bool{
+	"auto"          = true,
+	"break"         = true,
+	"case"          = true,
+	"char"          = true,
+	"const"         = true,
+	"continue"      = true,
+	"default"       = true,
+	"do"            = true,
+	"double"        = true,
+	"else"          = true,
+	"enum"          = true,
+	"extern"        = true,
+	"float"         = true,
+	"for"           = true,
+	"goto"          = true,
+	"if"            = true,
+	"int"           = true,
+	"long"          = true,
+	"register"      = true,
+	"restrict"      = true,
+	"return"        = true,
+	"short"         = true,
+	"signed"        = true,
+	"sizeof"        = true,
+	"static"        = true,
+	"struct"        = true,
+	"switch"        = true,
+	"typedef"       = true,
+	"union"         = true,
+	"unsigned"      = true,
+	"void"          = true,
+	"volatile"      = true,
+	"while"         = true,
+	"_Alignas"      = true,
+	"_Alignof"      = true,
+	"_Atomic"       = true,
+	"_Bool"         = true,
+	"_Generic"      = true,
+	"_Noreturn"     = true,
+	"_Thread_local" = true,
+	"__restrict"    = true,
+	"typeof"        = true,
+	"asm"           = true,
+	"__restrict__"  = true,
+	"__thread"      = true,
+	"__attribute__" = true,
+};

core/c/frontend/tokenizer/tokenizer.odin

@@ -0,0 +1,667 @@
+package c_frontend_tokenizer
+
+import "core:fmt"
+import "core:os"
+import "core:strings"
+import "core:unicode/utf8"
+
+
+Error_Handler :: #type proc(pos: Pos, fmt: string, args: ..any);
+
+
+Tokenizer :: struct {
+	// Immutable data
+	path: string,
+	src:  []byte,
+
+
+	// Tokenizing state
+	ch:          rune,
+	offset:      int,
+	read_offset: int,
+	line_offset: int,
+	line_count:  int,
+
+	// Extra information for tokens
+	at_bol:    bool,
+	has_space: bool,
+
+	// Mutable data
+	err:  Error_Handler,
+	warn: Error_Handler,
+	error_count:   int,
+	warning_count: int,
+}
+
+init_defaults :: proc(t: ^Tokenizer, err: Error_Handler = default_error_handler, warn: Error_Handler = default_warn_handler) {
+	t.err = err;
+	t.warn = warn;
+}
+
+
+@(private)
+offset_to_pos :: proc(t: ^Tokenizer, offset: int) -> (pos: Pos) {
+	pos.file = t.path;
+	pos.offset = offset;
+	pos.line = t.line_count;
+	pos.column = offset - t.line_offset + 1;
+	return;
+}
+
+default_error_handler :: proc(pos: Pos, msg: string, args: ..any) {
+	fmt.eprintf("%s(%d:%d) ", pos.file, pos.line, pos.column);
+	fmt.eprintf(msg, ..args);
+	fmt.eprintf("\n");
+}
+
+default_warn_handler :: proc(pos: Pos, msg: string, args: ..any) {
+	fmt.eprintf("%s(%d:%d) warning: ", pos.file, pos.line, pos.column);
+	fmt.eprintf(msg, ..args);
+	fmt.eprintf("\n");
+}
+
+error_offset :: proc(t: ^Tokenizer, offset: int, msg: string, args: ..any) {
+	pos := offset_to_pos(t, offset);
+	if t.err != nil {
+		t.err(pos, msg, ..args);
+	}
+	t.error_count += 1;
+}
+
+warn_offset :: proc(t: ^Tokenizer, offset: int, msg: string, args: ..any) {
+	pos := offset_to_pos(t, offset);
+	if t.warn != nil {
+		t.warn(pos, msg, ..args);
+	}
+	t.warning_count += 1;
+}
+
+error :: proc(t: ^Tokenizer, tok: ^Token, msg: string, args: ..any) {
+	pos := tok.pos;
+	if t.err != nil {
+		t.err(pos, msg, ..args);
+	}
+	t.error_count += 1;
+}
+
+warn :: proc(t: ^Tokenizer, tok: ^Token, msg: string, args: ..any) {
+	pos := tok.pos;
+	if t.warn != nil {
+		t.warn(pos, msg, ..args);
+	}
+	t.warning_count += 1;
+}
+
+
+advance_rune :: proc(t: ^Tokenizer) {
+	if t.read_offset < len(t.src) {
+		t.offset = t.read_offset;
+		if t.ch == '\n' {
+			t.at_bol = true;
+			t.line_offset = t.offset;
+			t.line_count += 1;
+		}
+		r, w := rune(t.src[t.read_offset]), 1;
+		switch {
+		case r == 0:
+			error_offset(t, t.offset, "illegal character NUL");
+		case r >= utf8.RUNE_SELF:
+			r, w = utf8.decode_rune(t.src[t.read_offset:]);
+			if r == utf8.RUNE_ERROR && w == 1 {
+				error_offset(t, t.offset, "illegal UTF-8 encoding");
+			} else if r == utf8.RUNE_BOM && t.offset > 0 {
+				error_offset(t, t.offset, "illegal byte order mark");
+			}
+		}
+		t.read_offset += w;
+		t.ch = r;
+	} else {
+		t.offset = len(t.src);
+		if t.ch == '\n' {
+			t.at_bol = true;
+			t.line_offset = t.offset;
+			t.line_count += 1;
+		}
+		t.ch = -1;
+	}
+}
+
+advance_rune_n :: proc(t: ^Tokenizer, n: int) {
+	for in 0..<n {
+		advance_rune(t);
+	}
+}
+
+is_digit :: proc(r: rune) -> bool {
+	return '0' <= r && r <= '9';
+}
+
+skip_whitespace :: proc(t: ^Tokenizer) {
+	for {
+		switch t.ch {
+		case ' ', '\t', '\r', '\v', '\f', '\n':
+			t.has_space = true;
+			advance_rune(t);
+		case:
+			return;
+		}
+	}
+}
+
+scan_comment :: proc(t: ^Tokenizer) -> string {
+	offset := t.offset-1;
+	next := -1;
+	general: {
+		if t.ch == '/'{ // line comments
+			advance_rune(t);
+			for t.ch != '\n' && t.ch >= 0 {
+				advance_rune(t);
+			}
+
+			next = t.offset;
+			if t.ch == '\n' {
+				next += 1;
+			}
+			break general;
+		}
+
+		/* style comment */
+		advance_rune(t);
+		for t.ch >= 0 {
+			ch := t.ch;
+			advance_rune(t);
+			if ch == '*' && t.ch == '/' {
+				advance_rune(t);
+				next = t.offset;
+				break general;
+			}
+		}
+
+		error_offset(t, offset, "comment not terminated");
+	}
+
+	lit := t.src[offset : t.offset];
+
+	// NOTE(bill): Strip CR for line comments
+	for len(lit) > 2 && lit[1] == '/' && lit[len(lit)-1] == '\r' {
+		lit = lit[:len(lit)-1];
+	}
+
+
+	return string(lit);
+}
+
+scan_identifier :: proc(t: ^Tokenizer) -> string {
+	offset := t.offset;
+
+	for is_ident1(t.ch) {
+		advance_rune(t);
+	}
+
+	return string(t.src[offset : t.offset]);
+}
+
+scan_string :: proc(t: ^Tokenizer) -> string {
+	offset := t.offset-1;
+
+	for {
+		ch := t.ch;
+		if ch == '\n' || ch < 0 {
+			error_offset(t, offset, "string literal was not terminated");
+			break;
+		}
+		advance_rune(t);
+		if ch == '"' {
+			break;
+		}
+		if ch == '\\' {
+			scan_escape(t);
+		}
+	}
+
+	return string(t.src[offset : t.offset]);
+}
+
+digit_val :: proc(r: rune) -> int {
+	switch r {
+	case '0'..='9':
+		return int(r-'0');
+	case 'A'..='F':
+		return int(r-'A' + 10);
+	case 'a'..='f':
+		return int(r-'a' + 10);
+	}
+	return 16;
+}
+
+scan_escape :: proc(t: ^Tokenizer) -> bool {
+	offset := t.offset;
+
+	esc := t.ch;
+	n: int;
+	base, max: u32;
+	switch esc {
+	case 'a', 'b', 'e', 'f', 'n', 't', 'v', 'r', '\\', '\'', '"':
+		advance_rune(t);
+		return true;
+
+	case '0'..='7':
+		for digit_val(t.ch) < 8 {
+			advance_rune(t);
+		}
+		return true;
+	case 'x':
+		advance_rune(t);
+		for digit_val(t.ch) < 16 {
+			advance_rune(t);
+		}
+		return true;
+	case 'u':
+		advance_rune(t);
+		n, base, max = 4, 16, utf8.MAX_RUNE;
+	case 'U':
+		advance_rune(t);
+		n, base, max = 8, 16, utf8.MAX_RUNE;
+	case:
+		if t.ch < 0 {
+			error_offset(t, offset, "escape sequence was not terminated");
+		} else {
+			break;
+		}
+		return false;
+	}
+
+	x: u32;
+	main_loop: for n > 0 {
+		d := u32(digit_val(t.ch));
+		if d >= base {
+			if t.ch == '"' || t.ch == '\'' {
+				break main_loop;
+			}
+			if t.ch < 0 {
+				error_offset(t, t.offset, "escape sequence was not terminated");
+			} else {
+				error_offset(t, t.offset, "illegal character '%r' : %d in escape sequence", t.ch, t.ch);
+			}
+			return false;
+		}
+
+		x = x*base + d;
+		advance_rune(t);
+		n -= 1;
+	}
+
+	if x > max || 0xd800 <= x && x <= 0xe000 {
+		error_offset(t, offset, "escape sequence is an invalid Unicode code point");
+		return false;
+	}
+	return true;
+}
+
+scan_rune :: proc(t: ^Tokenizer) -> string {
+	offset := t.offset-1;
+	valid := true;
+	n := 0;
+	for {
+		ch := t.ch;
+		if ch == '\n' || ch < 0 {
+			if valid {
+				error_offset(t, offset, "rune literal not terminated");
+				valid = false;
+			}
+			break;
+		}
+		advance_rune(t);
+		if ch == '\'' {
+			break;
+		}
+		n += 1;
+		if ch == '\\' {
+			if !scan_escape(t)  {
+				valid = false;
+			}
+		}
+	}
+
+	if valid && n != 1 {
+		error_offset(t, offset, "illegal rune literal");
+	}
+
+	return string(t.src[offset : t.offset]);
+}
+
+scan_number :: proc(t: ^Tokenizer, seen_decimal_point: bool) -> (Token_Kind, string) {
+	scan_mantissa :: proc(t: ^Tokenizer, base: int) {
+		for digit_val(t.ch) < base {
+			advance_rune(t);
+		}
+	}
+	scan_exponent :: proc(t: ^Tokenizer) {
+		if t.ch == 'e' || t.ch == 'E' || t.ch == 'p' || t.ch == 'P' {
+			advance_rune(t);
+			if t.ch == '-' || t.ch == '+' {
+				advance_rune(t);
+			}
+			if digit_val(t.ch) < 10 {
+				scan_mantissa(t, 10);
+			} else {
+				error_offset(t, t.offset, "illegal floating-point exponent");
+			}
+		}
+	}
+	scan_fraction :: proc(t: ^Tokenizer) -> (early_exit: bool) {
+		if t.ch == '.' && peek(t) == '.' {
+			return true;
+		}
+		if t.ch == '.' {
+			advance_rune(t);
+			scan_mantissa(t, 10);
+		}
+		return false;
+	}
+
+	check_end := true;
+
+
+	offset := t.offset;
+	seen_point := seen_decimal_point;
+
+	if seen_point {
+		offset -= 1;
+		scan_mantissa(t, 10);
+		scan_exponent(t);
+	} else {
+		if t.ch == '0' {
+			int_base :: proc(t: ^Tokenizer, base: int, msg: string) {
+				prev := t.offset;
+				advance_rune(t);
+				scan_mantissa(t, base);
+				if t.offset - prev <= 1 {
+					error_offset(t, t.offset, msg);
+				}
+			}
+
+			advance_rune(t);
+			switch t.ch {
+			case 'b', 'B':
+				int_base(t, 2, "illegal binary integer");
+			case 'x', 'X':
+				int_base(t, 16, "illegal hexadecimal integer");
+			case:
+				seen_point = false;
+				scan_mantissa(t, 10);
+				if t.ch == '.' {
+					seen_point = true;
+					if scan_fraction(t) {
+						check_end = false;
+					}
+				}
+				if check_end {
+					scan_exponent(t);
+					check_end = false;
+				}
+			}
+		}
+	}
+
+	if check_end {
+		scan_mantissa(t, 10);
+
+		if !scan_fraction(t) {
+			scan_exponent(t);
+		}
+	}
+
+	return .Number, string(t.src[offset : t.offset]);
+}
+
+scan_punct :: proc(t: ^Tokenizer, ch: rune) -> (kind: Token_Kind) {
+	kind = .Punct;
+	switch ch {
+	case:
+		kind = .Invalid;
+
+	case '<', '>':
+		if t.ch == ch {
+			advance_rune(t);
+		}
+		if t.ch == '=' {
+			advance_rune(t);
+		}
+	case '!', '+', '-', '*', '/', '%', '^', '=':
+		if t.ch == '=' {
+			advance_rune(t);
+		}
+	case '#':
+		if t.ch == '#' {
+			advance_rune(t);
+		}
+	case '&':
+		if t.ch == '=' || t.ch == '&' {
+			advance_rune(t);
+		}
+	case '|':
+		if t.ch == '=' || t.ch == '|' {
+			advance_rune(t);
+		}
+	case '(', ')', '[', ']', '{', '}':
+		// okay
+	case '~', ',', ':', ';', '?':
+		// okay
+	case '`':
+		// okay
+	case '.':
+		if t.ch == '.' && peek(t) == '.' {
+			advance_rune(t);
+			advance_rune(t); // consume last '.'
+		}
+	}
+	return;
+}
+
+peek :: proc(t: ^Tokenizer) -> byte {
+	if t.read_offset < len(t.src) {
+		return t.src[t.read_offset];
+	}
+	return 0;
+}
+peek_str :: proc(t: ^Tokenizer, str: string) -> bool {
+	if t.read_offset < len(t.src) {
+		return strings.has_prefix(string(t.src[t.offset:]), str);
+	}
+	return false;
+}
+
+scan_literal_prefix :: proc(t: ^Tokenizer, str: string, prefix: ^string) -> bool {
+	if peek_str(t, str) {
+		offset := t.offset;
+		for _ in str {
+			advance_rune(t);
+		}
+		prefix^ = string(t.src[offset:][:len(str)-1]);
+		return true;
+	}
+	return false;
+}
+
+
+allow_next_to_be_newline :: proc(t: ^Tokenizer) -> bool {
+	if t.ch == '\n' {
+		advance_rune(t);
+		return true;
+	} else if t.ch == '\r' && peek(t) == '\n' { // allow for MS-DOS style line endings
+		advance_rune(t); // \r
+		advance_rune(t); // \n
+		return true;
+	}
+	return false;
+}
+
+scan :: proc(t: ^Tokenizer, f: ^File) -> ^Token {
+	skip_whitespace(t);
+
+	offset := t.offset;
+
+	kind: Token_Kind;
+	lit: string;
+	prefix: string;
+
+	switch ch := t.ch; {
+	case scan_literal_prefix(t, `u8"`, &prefix):
+		kind = .String;
+		lit = scan_string(t);
+	case scan_literal_prefix(t, `u"`, &prefix):
+		kind = .String;
+		lit = scan_string(t);
+	case scan_literal_prefix(t, `L"`, &prefix):
+		kind = .String;
+		lit = scan_string(t);
+	case scan_literal_prefix(t, `U"`, &prefix):
+		kind = .String;
+		lit = scan_string(t);
+	case scan_literal_prefix(t, `u'`, &prefix):
+		kind = .Char;
+		lit = scan_rune(t);
+	case scan_literal_prefix(t, `L'`, &prefix):
+		kind = .Char;
+		lit = scan_rune(t);
+	case scan_literal_prefix(t, `U'`, &prefix):
+		kind = .Char;
+		lit = scan_rune(t);
+
+	case is_ident0(ch):
+		lit = scan_identifier(t);
+		kind = .Ident;
+	case '0' <= ch && ch <= '9':
+		kind, lit = scan_number(t, false);
+	case:
+		advance_rune(t);
+		switch ch {
+		case -1:
+			kind = .EOF;
+		case '\\':
+			kind = .Punct;
+			if allow_next_to_be_newline(t) {
+				t.at_bol = true;
+				t.has_space = false;
+				return scan(t, f);
+			}
+
+		case '.':
+			if is_digit(t.ch) {
+				kind, lit = scan_number(t, true);
+			} else {
+				kind = scan_punct(t, ch);
+			}
+		case '"':
+			kind = .String;
+			lit = scan_string(t);
+		case '\'':
+			kind = .Char;
+			lit = scan_rune(t);
+		case '/':
+			if t.ch == '/' || t.ch == '*' {
+				kind = .Comment;
+				lit = scan_comment(t);
+				t.has_space = true;
+				break;
+			}
+			fallthrough;
+		case:
+			kind = scan_punct(t, ch);
+			if kind == .Invalid && ch != utf8.RUNE_BOM {
+				error_offset(t, t.offset, "illegal character '%r': %d", ch, ch);
+			}
+		}
+	}
+
+	if lit == "" {
+		lit = string(t.src[offset : t.offset]);
+	}
+
+	if kind == .Comment {
+		return scan(t, f);
+	}
+
+	tok := new(Token);
+	tok.kind = kind;
+	tok.lit = lit;
+	tok.pos = offset_to_pos(t, offset);
+	tok.file = f;
+	tok.prefix = prefix;
+	tok.at_bol = t.at_bol;
+	tok.has_space = t.has_space;
+
+	t.at_bol, t.has_space = false, false;
+
+	return tok;
+}
+
+tokenize :: proc(t: ^Tokenizer, f: ^File) -> ^Token {
+	setup_tokenizer: {
+		t.src = f.src;
+		t.ch = ' ';
+		t.offset = 0;
+		t.read_offset = 0;
+		t.line_offset = 0;
+		t.line_count = len(t.src) > 0 ? 1 : 0;
+		t.error_count = 0;
+		t.path = f.name;
+
+
+		advance_rune(t);
+		if t.ch == utf8.RUNE_BOM {
+			advance_rune(t);
+		}
+	}
+
+
+	t.at_bol = true;
+	t.has_space = false;
+
+	head: Token;
+	curr := &head;
+	for {
+		tok := scan(t, f);
+		if tok == nil {
+			break;
+		}
+		curr.next = tok;
+		curr = curr.next;
+		if tok.kind == .EOF {
+			break;
+		}
+	}
+
+	return head.next;
+}
+
+add_new_file :: proc(t: ^Tokenizer, name: string, src: []byte, id: int) -> ^File {
+	file := new(File);
+	file.id = id;
+	file.src = src;
+	file.name = name;
+	file.display_name = name;
+	return file;
+}
+
+tokenize_file :: proc(t: ^Tokenizer, path: string, id: int, loc := #caller_location) -> ^Token {
+	src, ok := os.read_entire_file(path);
+	if !ok {
+		return nil;
+	}
+	return tokenize(t, add_new_file(t, path, src, id));
+}
+
+
+inline_tokenize :: proc(t: ^Tokenizer, tok: ^Token, src: []byte) -> ^Token {
+	file := new(File);
+	file.src = src;
+	if tok.file != nil {
+		file.id = tok.file.id;
+		file.name = tok.file.name;
+		file.display_name = tok.file.name;
+	}
+
+	return tokenize(t, file);
+}

core/c/frontend/tokenizer/unicode.odin

@@ -0,0 +1,116 @@
+package c_frontend_tokenizer
+
+
+in_range :: proc(range: []rune, c: rune) -> bool #no_bounds_check {
+	for i := 0; range[i] != -1; i += 2 {
+		if range[i] <= c && c <= range[i+1] {
+			return true;
+		}
+	}
+	return false;
+}
+
+
+// [https://www.sigbus.info/n1570#D] C11 allows ASCII and some multibyte characters in certan Unicode ranges to be used in an identifier.
+//
+// is_ident0 returns true if a given character is acceptable as the first character of an identifier.
+is_ident0 :: proc(c: rune) -> bool {
+	return in_range(_range_ident0, c);
+}
+// is_ident0 returns true if a given character is acceptable as a non-first character of an identifier.
+is_ident1 :: proc(c: rune) -> bool {
+	return is_ident0(c) || in_range(_range_ident1, c);
+}
+
+// Returns the number of columns needed to display a given character in a fixed-width font.
+// Based on https://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
+char_width :: proc(c: rune) -> int {
+	switch {
+	case in_range(_range_width0, c):
+		return 0;
+	case in_range(_range_width2, c):
+		return 2;
+	}
+	return 1;
+}
+
+display_width :: proc(str: string) -> (w: int) {
+	for c in str {
+		w += char_width(c);
+	}
+	return;
+}
+
+
+
+_range_ident0 := []rune{
+	'_', '_', 'a', 'z', 'A', 'Z', '$', '$',
+	0x00A8, 0x00A8, 0x00AA, 0x00AA, 0x00AD, 0x00AD, 0x00AF, 0x00AF,
+	0x00B2, 0x00B5, 0x00B7, 0x00BA, 0x00BC, 0x00BE, 0x00C0, 0x00D6,
+	0x00D8, 0x00F6, 0x00F8, 0x00FF, 0x0100, 0x02FF, 0x0370, 0x167F,
+	0x1681, 0x180D, 0x180F, 0x1DBF, 0x1E00, 0x1FFF, 0x200B, 0x200D,
+	0x202A, 0x202E, 0x203F, 0x2040, 0x2054, 0x2054, 0x2060, 0x206F,
+	0x2070, 0x20CF, 0x2100, 0x218F, 0x2460, 0x24FF, 0x2776, 0x2793,
+	0x2C00, 0x2DFF, 0x2E80, 0x2FFF, 0x3004, 0x3007, 0x3021, 0x302F,
+	0x3031, 0x303F, 0x3040, 0xD7FF, 0xF900, 0xFD3D, 0xFD40, 0xFDCF,
+	0xFDF0, 0xFE1F, 0xFE30, 0xFE44, 0xFE47, 0xFFFD,
+	0x10000, 0x1FFFD, 0x20000, 0x2FFFD, 0x30000, 0x3FFFD, 0x40000, 0x4FFFD,
+	0x50000, 0x5FFFD, 0x60000, 0x6FFFD, 0x70000, 0x7FFFD, 0x80000, 0x8FFFD,
+	0x90000, 0x9FFFD, 0xA0000, 0xAFFFD, 0xB0000, 0xBFFFD, 0xC0000, 0xCFFFD,
+	0xD0000, 0xDFFFD, 0xE0000, 0xEFFFD,
+	-1,
+};
+
+_range_ident1 := []rune{
+	'0', '9', '$', '$', 0x0300, 0x036F, 0x1DC0, 0x1DFF, 0x20D0, 0x20FF, 0xFE20, 0xFE2F,
+	-1,
+};
+
+
+_range_width0 := []rune{
+	0x0000, 0x001F, 0x007f, 0x00a0, 0x0300, 0x036F, 0x0483, 0x0486,
+	0x0488, 0x0489, 0x0591, 0x05BD, 0x05BF, 0x05BF, 0x05C1, 0x05C2,
+	0x05C4, 0x05C5, 0x05C7, 0x05C7, 0x0600, 0x0603, 0x0610, 0x0615,
+	0x064B, 0x065E, 0x0670, 0x0670, 0x06D6, 0x06E4, 0x06E7, 0x06E8,
+	0x06EA, 0x06ED, 0x070F, 0x070F, 0x0711, 0x0711, 0x0730, 0x074A,
+	0x07A6, 0x07B0, 0x07EB, 0x07F3, 0x0901, 0x0902, 0x093C, 0x093C,
+	0x0941, 0x0948, 0x094D, 0x094D, 0x0951, 0x0954, 0x0962, 0x0963,
+	0x0981, 0x0981, 0x09BC, 0x09BC, 0x09C1, 0x09C4, 0x09CD, 0x09CD,
+	0x09E2, 0x09E3, 0x0A01, 0x0A02, 0x0A3C, 0x0A3C, 0x0A41, 0x0A42,
+	0x0A47, 0x0A48, 0x0A4B, 0x0A4D, 0x0A70, 0x0A71, 0x0A81, 0x0A82,
+	0x0ABC, 0x0ABC, 0x0AC1, 0x0AC5, 0x0AC7, 0x0AC8, 0x0ACD, 0x0ACD,
+	0x0AE2, 0x0AE3, 0x0B01, 0x0B01, 0x0B3C, 0x0B3C, 0x0B3F, 0x0B3F,
+	0x0B41, 0x0B43, 0x0B4D, 0x0B4D, 0x0B56, 0x0B56, 0x0B82, 0x0B82,
+	0x0BC0, 0x0BC0, 0x0BCD, 0x0BCD, 0x0C3E, 0x0C40, 0x0C46, 0x0C48,
+	0x0C4A, 0x0C4D, 0x0C55, 0x0C56, 0x0CBC, 0x0CBC, 0x0CBF, 0x0CBF,
+	0x0CC6, 0x0CC6, 0x0CCC, 0x0CCD, 0x0CE2, 0x0CE3, 0x0D41, 0x0D43,
+	0x0D4D, 0x0D4D, 0x0DCA, 0x0DCA, 0x0DD2, 0x0DD4, 0x0DD6, 0x0DD6,
+	0x0E31, 0x0E31, 0x0E34, 0x0E3A, 0x0E47, 0x0E4E, 0x0EB1, 0x0EB1,
+	0x0EB4, 0x0EB9, 0x0EBB, 0x0EBC, 0x0EC8, 0x0ECD, 0x0F18, 0x0F19,
+	0x0F35, 0x0F35, 0x0F37, 0x0F37, 0x0F39, 0x0F39, 0x0F71, 0x0F7E,
+	0x0F80, 0x0F84, 0x0F86, 0x0F87, 0x0F90, 0x0F97, 0x0F99, 0x0FBC,
+	0x0FC6, 0x0FC6, 0x102D, 0x1030, 0x1032, 0x1032, 0x1036, 0x1037,
+	0x1039, 0x1039, 0x1058, 0x1059, 0x1160, 0x11FF, 0x135F, 0x135F,
+	0x1712, 0x1714, 0x1732, 0x1734, 0x1752, 0x1753, 0x1772, 0x1773,
+	0x17B4, 0x17B5, 0x17B7, 0x17BD, 0x17C6, 0x17C6, 0x17C9, 0x17D3,
+	0x17DD, 0x17DD, 0x180B, 0x180D, 0x18A9, 0x18A9, 0x1920, 0x1922,
+	0x1927, 0x1928, 0x1932, 0x1932, 0x1939, 0x193B, 0x1A17, 0x1A18,
+	0x1B00, 0x1B03, 0x1B34, 0x1B34, 0x1B36, 0x1B3A, 0x1B3C, 0x1B3C,
+	0x1B42, 0x1B42, 0x1B6B, 0x1B73, 0x1DC0, 0x1DCA, 0x1DFE, 0x1DFF,
+	0x200B, 0x200F, 0x202A, 0x202E, 0x2060, 0x2063, 0x206A, 0x206F,
+	0x20D0, 0x20EF, 0x302A, 0x302F, 0x3099, 0x309A, 0xA806, 0xA806,
+	0xA80B, 0xA80B, 0xA825, 0xA826, 0xFB1E, 0xFB1E, 0xFE00, 0xFE0F,
+	0xFE20, 0xFE23, 0xFEFF, 0xFEFF, 0xFFF9, 0xFFFB, 0x10A01, 0x10A03,
+	0x10A05, 0x10A06, 0x10A0C, 0x10A0F, 0x10A38, 0x10A3A, 0x10A3F, 0x10A3F,
+	0x1D167, 0x1D169, 0x1D173, 0x1D182, 0x1D185, 0x1D18B, 0x1D1AA, 0x1D1AD,
+	0x1D242, 0x1D244, 0xE0001, 0xE0001, 0xE0020, 0xE007F, 0xE0100, 0xE01EF,
+	-1,
+};
+
+_range_width2 := []rune{
+	0x1100, 0x115F, 0x2329, 0x2329, 0x232A, 0x232A, 0x2E80, 0x303E,
+	0x3040, 0xA4CF, 0xAC00, 0xD7A3, 0xF900, 0xFAFF, 0xFE10, 0xFE19,
+	0xFE30, 0xFE6F, 0xFF00, 0xFF60, 0xFFE0, 0xFFE6, 0x1F000, 0x1F644,
+	0x20000, 0x2FFFD, 0x30000, 0x3FFFD,
+	-1,
+};

core/compress/common.odin

@@ -0,0 +1,478 @@
+package compress
+
+/*
+	Copyright 2021 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-2 license.
+
+	List of contributors:
+		Jeroen van Rijn: Initial implementation, optimization.
+*/
+
+import "core:io"
+import "core:image"
+import "core:bytes"
+
+/*
+	These settings bound how much compression algorithms will allocate for their output buffer.
+	If streaming their output, these are unnecessary and will be ignored.
+
+*/
+
+/*
+	When a decompression routine doesn't stream its output, but writes to a buffer,
+	we pre-allocate an output buffer to speed up decompression. The default is 1 MiB.
+*/
+COMPRESS_OUTPUT_ALLOCATE_MIN :: int(#config(COMPRESS_OUTPUT_ALLOCATE_MIN, 1 << 20));
+
+/*
+	This bounds the maximum a buffer will resize to as needed, or the maximum we'll
+	pre-allocate if you inform the decompression routine you know the payload size.
+
+	For reference, the largest payload size of a GZIP file is 4 GiB.
+
+*/
+when size_of(uintptr) == 8 {
+	/*
+		For 64-bit platforms, we set the default max buffer size to 4 GiB,
+		which is GZIP and PKZIP's max payload size.
+	*/	
+	COMPRESS_OUTPUT_ALLOCATE_MAX :: int(#config(COMPRESS_OUTPUT_ALLOCATE_MAX, 1 << 32));
+} else {
+	/*
+		For 32-bit platforms, we set the default max buffer size to 512 MiB.
+	*/
+	COMPRESS_OUTPUT_ALLOCATE_MAX :: int(#config(COMPRESS_OUTPUT_ALLOCATE_MAX, 1 << 29));
+}
+
+
+Error :: union {
+	General_Error,
+	Deflate_Error,
+	ZLIB_Error,
+	GZIP_Error,
+	ZIP_Error,
+	/*
+		This is here because png.load will return a this type of error union,
+		as it may involve an I/O error, a Deflate error, etc.
+	*/
+	image.Error,
+}
+
+General_Error :: enum {
+	File_Not_Found,
+	Cannot_Open_File,
+	File_Too_Short,
+	Stream_Too_Short,
+	Output_Too_Short,
+	Unknown_Compression_Method,
+	Checksum_Failed,
+	Incompatible_Options,
+	Unimplemented,
+
+
+	/*
+		Memory errors
+	*/
+	Allocation_Failed,
+	Resize_Failed,
+}
+
+GZIP_Error :: enum {
+	Invalid_GZIP_Signature,
+	Reserved_Flag_Set,
+	Invalid_Extra_Data,
+	Original_Name_Too_Long,
+	Comment_Too_Long,
+	Payload_Length_Invalid,
+	Payload_CRC_Invalid,
+
+	/*
+		GZIP's payload can be a maximum of max(u32le), or 4 GiB.
+		If you tell it you expect it to contain more, that's obviously an error.
+	*/
+	Payload_Size_Exceeds_Max_Payload,
+	/*
+		For buffered instead of streamed output, the payload size can't exceed
+		the max set by the `COMPRESS_OUTPUT_ALLOCATE_MAX` switch in compress/common.odin.
+
+		You can tweak this setting using `-define:COMPRESS_OUTPUT_ALLOCATE_MAX=size_in_bytes`
+	*/
+	Output_Exceeds_COMPRESS_OUTPUT_ALLOCATE_MAX,
+
+}
+
+ZIP_Error :: enum {
+	Invalid_ZIP_File_Signature,
+	Unexpected_Signature,
+	Insert_Next_Disk,
+	Expected_End_of_Central_Directory_Record,
+}
+
+ZLIB_Error :: enum {
+	Unsupported_Window_Size,
+	FDICT_Unsupported,
+	Unsupported_Compression_Level,
+	Code_Buffer_Malformed,
+}
+
+Deflate_Error :: enum {
+	Huffman_Bad_Sizes,
+	Huffman_Bad_Code_Lengths,
+	Inflate_Error,
+	Bad_Distance,
+	Bad_Huffman_Code,
+	Len_Nlen_Mismatch,
+	BType_3,
+}
+
+
+// General I/O context for ZLIB, LZW, etc.
+Context_Memory_Input :: struct #packed {
+	input_data:        []u8,
+	output:            ^bytes.Buffer,
+	bytes_written:     i64,
+
+	code_buffer:       u64,
+	num_bits:          u64,
+
+	/*
+		If we know the data size, we can optimize the reads and writes.
+	*/
+	size_packed:       i64,
+	size_unpacked:     i64,
+}
+#assert(size_of(Context_Memory_Input) == 64);
+
+Context_Stream_Input :: struct #packed {
+	input_data:        []u8,
+	input:             io.Stream,
+	output:            ^bytes.Buffer,
+	bytes_written:     i64,
+
+	code_buffer:       u64,
+	num_bits:          u64,
+
+	/*
+		If we know the data size, we can optimize the reads and writes.
+	*/
+	size_packed:       i64,
+	size_unpacked:     i64,
+
+	/*
+		Flags:
+			`input_fully_in_memory`
+				true  = This tells us we read input from `input_data` exclusively. [] = EOF.
+				false = Try to refill `input_data` from the `input` stream.
+	*/
+	input_fully_in_memory: b8,
+
+	padding: [1]u8,
+}
+
+/*
+	TODO: The stream versions should really only check if a certain method is available once, perhaps even during setup.
+
+	Bit and byte readers may be merged so that reading bytes will grab them from the bit buffer first.
+	This simplifies end-of-stream handling where bits may be left in the bit buffer.
+*/
+
+// TODO: Make these return compress.Error errors.
+
+input_size_from_memory :: proc(z: ^Context_Memory_Input) -> (res: i64, err: Error) {
+	return i64(len(z.input_data)), nil;
+}
+
+input_size_from_stream :: proc(z: ^Context_Stream_Input) -> (res: i64, err: Error) {
+	return io.size(z.input), nil;
+}
+
+input_size :: proc{input_size_from_memory, input_size_from_stream};
+
+@(optimization_mode="speed")
+read_slice_from_memory :: #force_inline proc(z: ^Context_Memory_Input, size: int) -> (res: []u8, err: io.Error) {
+	#no_bounds_check {
+		if len(z.input_data) >= size {
+			res = z.input_data[:size];
+			z.input_data = z.input_data[size:];
+			return res, .None;
+		}
+	}
+
+	if len(z.input_data) == 0 {
+		return []u8{}, .EOF;
+	} else {
+		return []u8{}, .Short_Buffer;
+	}
+}
+
+@(optimization_mode="speed")
+read_slice_from_stream :: #force_inline proc(z: ^Context_Stream_Input, size: int) -> (res: []u8, err: io.Error) {
+	b := make([]u8, size, context.temp_allocator);
+	_, e := z.input->impl_read(b[:]);
+	if e == .None {
+		return b, .None;
+	}
+
+	return []u8{}, e;
+}
+
+read_slice :: proc{read_slice_from_memory, read_slice_from_stream};
+
+@(optimization_mode="speed")
+read_data :: #force_inline proc(z: ^$C, $T: typeid) -> (res: T, err: io.Error) {
+	b, e := read_slice(z, size_of(T));
+	if e == .None {
+		return (^T)(&b[0])^, .None;
+	}
+
+	return T{}, e;
+}
+
+@(optimization_mode="speed")
+read_u8_from_memory :: #force_inline proc(z: ^Context_Memory_Input) -> (res: u8, err: io.Error) {
+	#no_bounds_check {
+		if len(z.input_data) >= 1 {
+			res = z.input_data[0];
+			z.input_data = z.input_data[1:];
+			return res, .None;
+		}
+	}
+	return 0, .EOF;
+}
+
+@(optimization_mode="speed")
+read_u8_from_stream :: #force_inline proc(z: ^Context_Stream_Input) -> (res: u8, err: io.Error) {
+	b, e := read_slice_from_stream(z, 1);
+	if e == .None {
+		return b[0], .None;
+	}
+
+	return 0, e;
+}
+
+read_u8 :: proc{read_u8_from_memory, read_u8_from_stream};
+
+/*
+	You would typically only use this at the end of Inflate, to drain bits from the code buffer
+	preferentially.
+*/
+@(optimization_mode="speed")
+read_u8_prefer_code_buffer_lsb :: #force_inline proc(z: ^$C) -> (res: u8, err: io.Error) {
+	if z.num_bits >= 8 {
+		res = u8(read_bits_no_refill_lsb(z, 8));
+	} else {
+		size, _ := input_size(z);
+		if size > 0 {
+			res, err = read_u8(z);
+		} else {
+			err = .EOF;
+		}
+	}
+	return;
+}
+
+@(optimization_mode="speed")
+peek_data_from_memory :: #force_inline proc(z: ^Context_Memory_Input, $T: typeid) -> (res: T, err: io.Error) {
+	size :: size_of(T);
+
+	#no_bounds_check {
+		if len(z.input_data) >= size {
+			buf := z.input_data[:size];
+			return (^T)(&buf[0])^, .None;
+		}
+	}
+
+	if len(z.input_data) == 0 {
+		return T{}, .EOF;
+	} else {
+		return T{}, .Short_Buffer;
+	}
+}
+
+@(optimization_mode="speed")
+peek_data_from_stream :: #force_inline proc(z: ^Context_Stream_Input, $T: typeid) -> (res: T, err: io.Error) {
+	size :: size_of(T);
+
+	// Get current position to read from.
+	curr, e1 := z.input->impl_seek(0, .Current);
+	if e1 != .None {
+		return T{}, e1;
+	}
+	r, e2 := io.to_reader_at(z.input);
+	if !e2 {
+		return T{}, .Empty;
+	}
+	when size <= 128 {
+		b: [size]u8;
+	} else {
+		b := make([]u8, size, context.temp_allocator);
+	}
+	_, e3 := io.read_at(r, b[:], curr);
+	if e3 != .None {
+		return T{}, .Empty;
+	}
+
+	res = (^T)(&b[0])^;
+	return res, .None;
+}
+
+peek_data :: proc{peek_data_from_memory, peek_data_from_stream};
+
+
+
+// Sliding window read back
+@(optimization_mode="speed")
+peek_back_byte :: #force_inline proc(z: ^$C, offset: i64) -> (res: u8, err: io.Error) {
+	// Look back into the sliding window.
+	return z.output.buf[z.bytes_written - offset], .None;
+}
+
+// Generalized bit reader LSB
+@(optimization_mode="speed")
+refill_lsb_from_memory :: #force_inline proc(z: ^Context_Memory_Input, width := i8(48)) {
+	refill := u64(width);
+	b      := u64(0);
+
+	if z.num_bits > refill {
+		return;
+	}
+
+	for {
+		if len(z.input_data) != 0 {
+			b = u64(z.input_data[0]);
+			z.input_data = z.input_data[1:];
+		} else {
+			b = 0;
+		}
+
+		z.code_buffer |= b << u8(z.num_bits);
+		z.num_bits += 8;
+		if z.num_bits > refill {
+			break;
+		}
+	}
+}
+
+// Generalized bit reader LSB
+@(optimization_mode="speed")
+refill_lsb_from_stream :: proc(z: ^Context_Stream_Input, width := i8(24)) {
+	refill := u64(width);
+
+	for {
+		if z.num_bits > refill {
+			break;
+		}
+		if z.code_buffer == 0 && z.num_bits > 63 {
+			z.num_bits = 0;
+		}
+		if z.code_buffer >= 1 << uint(z.num_bits) {
+			// Code buffer is malformed.
+			z.num_bits = max(u64);
+			return;
+		}
+		b, err := read_u8(z);
+		if err != .None {
+			// This is fine at the end of the file.
+			return;
+		}
+		z.code_buffer |= (u64(b) << u8(z.num_bits));
+		z.num_bits += 8;
+	}
+}
+
+refill_lsb :: proc{refill_lsb_from_memory, refill_lsb_from_stream};
+
+
+@(optimization_mode="speed")
+consume_bits_lsb_from_memory :: #force_inline proc(z: ^Context_Memory_Input, width: u8) {
+	z.code_buffer >>= width;
+	z.num_bits -= u64(width);
+}
+
+@(optimization_mode="speed")
+consume_bits_lsb_from_stream :: #force_inline proc(z: ^Context_Stream_Input, width: u8) {
+	z.code_buffer >>= width;
+	z.num_bits -= u64(width);
+}
+
+consume_bits_lsb :: proc{consume_bits_lsb_from_memory, consume_bits_lsb_from_stream};
+
+@(optimization_mode="speed")
+peek_bits_lsb_from_memory :: #force_inline proc(z: ^Context_Memory_Input, width: u8) -> u32 {
+	if z.num_bits < u64(width) {
+		refill_lsb(z);
+	}
+	return u32(z.code_buffer & ~(~u64(0) << width));
+}
+
+@(optimization_mode="speed")
+peek_bits_lsb_from_stream :: #force_inline proc(z: ^Context_Stream_Input, width: u8) -> u32 {
+	if z.num_bits < u64(width) {
+		refill_lsb(z);
+	}
+	return u32(z.code_buffer & ~(~u64(0) << width));
+}
+
+peek_bits_lsb :: proc{peek_bits_lsb_from_memory, peek_bits_lsb_from_stream};
+
+@(optimization_mode="speed")
+peek_bits_no_refill_lsb_from_memory :: #force_inline proc(z: ^Context_Memory_Input, width: u8) -> u32 {
+	assert(z.num_bits >= u64(width));
+	return u32(z.code_buffer & ~(~u64(0) << width));
+}
+
+@(optimization_mode="speed")
+peek_bits_no_refill_lsb_from_stream :: #force_inline proc(z: ^Context_Stream_Input, width: u8) -> u32 {
+	assert(z.num_bits >= u64(width));
+	return u32(z.code_buffer & ~(~u64(0) << width));
+}
+
+peek_bits_no_refill_lsb :: proc{peek_bits_no_refill_lsb_from_memory, peek_bits_no_refill_lsb_from_stream};
+
+@(optimization_mode="speed")
+read_bits_lsb_from_memory :: #force_inline proc(z: ^Context_Memory_Input, width: u8) -> u32 {
+	k := #force_inline peek_bits_lsb(z, width);
+	#force_inline consume_bits_lsb(z, width);
+	return k;
+}
+
+@(optimization_mode="speed")
+read_bits_lsb_from_stream :: #force_inline proc(z: ^Context_Stream_Input, width: u8) -> u32 {
+	k := peek_bits_lsb(z, width);
+	consume_bits_lsb(z, width);
+	return k;
+}
+
+read_bits_lsb :: proc{read_bits_lsb_from_memory, read_bits_lsb_from_stream};
+
+@(optimization_mode="speed")
+read_bits_no_refill_lsb_from_memory :: #force_inline proc(z: ^Context_Memory_Input, width: u8) -> u32 {
+	k := #force_inline peek_bits_no_refill_lsb(z, width);
+	#force_inline consume_bits_lsb(z, width);
+	return k;
+}
+
+@(optimization_mode="speed")
+read_bits_no_refill_lsb_from_stream :: #force_inline proc(z: ^Context_Stream_Input, width: u8) -> u32 {
+	k := peek_bits_no_refill_lsb(z, width);
+	consume_bits_lsb(z, width);
+	return k;
+}
+
+read_bits_no_refill_lsb :: proc{read_bits_no_refill_lsb_from_memory, read_bits_no_refill_lsb_from_stream};
+
+
+@(optimization_mode="speed")
+discard_to_next_byte_lsb_from_memory :: proc(z: ^Context_Memory_Input) {
+	discard := u8(z.num_bits & 7);
+	#force_inline consume_bits_lsb(z, discard);
+}
+
+
+@(optimization_mode="speed")
+discard_to_next_byte_lsb_from_stream :: proc(z: ^Context_Stream_Input) {
+	discard := u8(z.num_bits & 7);
+	consume_bits_lsb(z, discard);
+}
+
+discard_to_next_byte_lsb :: proc{discard_to_next_byte_lsb_from_memory, discard_to_next_byte_lsb_from_stream};

core/compress/gzip/example.odin

@@ -0,0 +1,89 @@
+//+ignore
+package gzip
+
+/*
+	Copyright 2021 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-2 license.
+
+	List of contributors:
+		Jeroen van Rijn: Initial implementation.
+		Ginger Bill:     Cosmetic changes.
+
+	A small GZIP implementation as an example.
+*/
+
+import "core:bytes"
+import "core:os"
+import "core:compress"
+import "core:fmt"
+
+// Small GZIP file with fextra, fname and fcomment present.
+@private
+TEST: []u8 = {
+	0x1f, 0x8b, 0x08, 0x1c, 0xcb, 0x3b, 0x3a, 0x5a,
+	0x02, 0x03, 0x07, 0x00, 0x61, 0x62, 0x03, 0x00,
+	0x63, 0x64, 0x65, 0x66, 0x69, 0x6c, 0x65, 0x6e,
+	0x61, 0x6d, 0x65, 0x00, 0x54, 0x68, 0x69, 0x73,
+	0x20, 0x69, 0x73, 0x20, 0x61, 0x20, 0x63, 0x6f,
+	0x6d, 0x6d, 0x65, 0x6e, 0x74, 0x00, 0x2b, 0x48,
+	0xac, 0xcc, 0xc9, 0x4f, 0x4c, 0x01, 0x00, 0x15,
+	0x6a, 0x2c, 0x42, 0x07, 0x00, 0x00, 0x00,
+};
+
+main :: proc() {
+	// Set up output buffer.
+	buf := bytes.Buffer{};
+
+	stdout :: proc(s: string) {
+		os.write_string(os.stdout, s);
+	}
+	stderr :: proc(s: string) {
+		os.write_string(os.stderr, s);
+	}
+
+	args := os.args;
+
+	if len(args) < 2 {
+		stderr("No input file specified.\n");
+		err := load(slice=TEST, buf=&buf, known_gzip_size=len(TEST));
+		if err == nil {
+			stdout("Displaying test vector: ");
+			stdout(bytes.buffer_to_string(&buf));
+			stdout("\n");
+		} else {
+			fmt.printf("gzip.load returned %v\n", err);
+		}
+		bytes.buffer_destroy(&buf);
+		os.exit(0);
+	}
+
+	// The rest are all files.
+	args = args[1:];
+	err: Error;
+
+	for file in args {
+		if file == "-" {
+			// Read from stdin
+			s := os.stream_from_handle(os.stdin);
+			ctx := &compress.Context_Stream_Input{
+				input = s,
+			};
+			err = load(ctx, &buf);
+		} else {
+			err = load(file, &buf);
+		}
+		if err != nil {
+			if err != E_General.File_Not_Found {
+				stderr("File not found: ");
+				stderr(file);
+				stderr("\n");
+				os.exit(1);
+			}
+			stderr("GZIP returned an error.\n");
+				bytes.buffer_destroy(&buf);
+			os.exit(2);
+		}
+		stdout(bytes.buffer_to_string(&buf));
+	}
+	bytes.buffer_destroy(&buf);
+}

core/compress/gzip/gzip.odin

@@ -0,0 +1,367 @@
+package gzip
+
+/*
+	Copyright 2021 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-2 license.
+
+	List of contributors:
+		Jeroen van Rijn: Initial implementation.
+
+	This package implements support for the GZIP file format v4.3,
+	as specified in RFC 1952.
+
+	It is implemented in such a way that it lends itself naturally
+	to be the input to a complementary TAR implementation.
+*/
+
+import "core:compress/zlib"
+import "core:compress"
+import "core:os"
+import "core:io"
+import "core:bytes"
+import "core:hash"
+
+Magic :: enum u16le {
+	GZIP = 0x8b << 8 | 0x1f,
+}
+
+Header :: struct #packed {
+	magic: Magic,
+	compression_method: Compression,
+	flags: Header_Flags,
+	modification_time: u32le,
+	xfl: Compression_Flags,
+	os: OS,
+}
+#assert(size_of(Header) == 10);
+
+Header_Flag :: enum u8 {
+	// Order is important
+	text       = 0,
+	header_crc = 1,
+	extra      = 2,
+	name       = 3,
+	comment    = 4,
+	reserved_1 = 5,
+	reserved_2 = 6,
+	reserved_3 = 7,
+}
+Header_Flags :: distinct bit_set[Header_Flag; u8];
+
+OS :: enum u8 {
+	FAT          = 0,
+	Amiga        = 1,
+	VMS          = 2,
+	Unix         = 3,
+	VM_CMS       = 4,
+	Atari_TOS    = 5,
+	HPFS         = 6,
+	Macintosh    = 7,
+	Z_System     = 8,
+	CP_M         = 9,
+	TOPS_20      = 10,
+	NTFS         = 11,
+	QDOS         = 12,
+	Acorn_RISCOS = 13,
+	_Unknown     = 14,
+	Unknown      = 255,
+}
+OS_Name :: #partial [OS]string{
+	.FAT          = "FAT",
+	.Amiga        = "Amiga",
+	.VMS          = "VMS/OpenVMS",
+	.Unix         = "Unix",
+	.VM_CMS       = "VM/CMS",
+	.Atari_TOS    = "Atari TOS",
+	.HPFS         = "HPFS",
+	.Macintosh    = "Macintosh",
+	.Z_System     = "Z-System",
+	.CP_M         = "CP/M",
+	.TOPS_20      = "TOPS-20",
+	.NTFS         = "NTFS",
+	.QDOS         = "QDOS",
+	.Acorn_RISCOS = "Acorn RISCOS",
+	.Unknown      = "Unknown",
+};
+
+Compression :: enum u8 {
+	DEFLATE = 8,
+}
+
+Compression_Flags :: enum u8 {
+	Maximum_Compression = 2,
+	Fastest_Compression = 4,
+}
+
+Error     :: compress.Error;
+E_General :: compress.General_Error;
+E_GZIP    :: compress.GZIP_Error;
+E_ZLIB    :: compress.ZLIB_Error;
+E_Deflate :: compress.Deflate_Error;
+
+GZIP_MAX_PAYLOAD_SIZE :: int(max(u32le));
+
+load :: proc{load_from_slice, load_from_file, load_from_context};
+
+load_from_file :: proc(filename: string, buf: ^bytes.Buffer, expected_output_size := -1, allocator := context.allocator) -> (err: Error) {
+	data, ok := os.read_entire_file(filename, allocator);
+	defer delete(data);
+
+	err = E_General.File_Not_Found;
+	if ok {
+		err = load_from_slice(data, buf, len(data), expected_output_size, allocator);
+	}
+	return;
+}
+
+load_from_slice :: proc(slice: []u8, buf: ^bytes.Buffer, known_gzip_size := -1, expected_output_size := -1, allocator := context.allocator) -> (err: Error) {
+	buf := buf;
+
+	z := &compress.Context_Memory_Input{
+		input_data = slice,
+		output = buf,
+	};
+	return load_from_context(z, buf, known_gzip_size, expected_output_size, allocator);
+}
+
+load_from_context :: proc(z: ^$C, buf: ^bytes.Buffer, known_gzip_size := -1, expected_output_size := -1, allocator := context.allocator) -> (err: Error) {
+	buf := buf;
+	expected_output_size := expected_output_size;
+
+	input_data_consumed := 0;
+
+	z.output = buf;
+
+	if expected_output_size > GZIP_MAX_PAYLOAD_SIZE {
+		return E_GZIP.Payload_Size_Exceeds_Max_Payload;
+	}
+
+	if expected_output_size > compress.COMPRESS_OUTPUT_ALLOCATE_MAX {
+		return E_GZIP.Output_Exceeds_COMPRESS_OUTPUT_ALLOCATE_MAX;
+	}
+
+	b: []u8;
+
+	header, e := compress.read_data(z, Header);
+	if e != .None {
+		return E_General.File_Too_Short;
+	}
+	input_data_consumed += size_of(Header);
+
+	if header.magic != .GZIP {
+		return E_GZIP.Invalid_GZIP_Signature;
+	}
+	if header.compression_method != .DEFLATE {
+		return E_General.Unknown_Compression_Method;
+	}
+
+	if header.os >= ._Unknown {
+		header.os = .Unknown;
+	}
+
+	if .reserved_1 in header.flags || .reserved_2 in header.flags || .reserved_3 in header.flags {
+		return E_GZIP.Reserved_Flag_Set;
+	}
+
+	// printf("signature: %v\n", header.magic);
+	// printf("compression: %v\n", header.compression_method);
+	// printf("flags: %v\n", header.flags);
+	// printf("modification time: %v\n", time.unix(i64(header.modification_time), 0));
+	// printf("xfl: %v (%v)\n", header.xfl, int(header.xfl));
+	// printf("os: %v\n", OS_Name[header.os]);
+
+	if .extra in header.flags {
+		xlen, e_extra := compress.read_data(z, u16le);
+		input_data_consumed += 2;
+
+		if e_extra != .None {
+			return E_General.Stream_Too_Short;
+		}
+		// printf("Extra data present (%v bytes)\n", xlen);
+		if xlen < 4 {
+			// Minimum length is 2 for ID + 2 for a field length, if set to zero.
+			return E_GZIP.Invalid_Extra_Data;
+		}
+
+		field_id:     [2]u8;
+		field_length: u16le;
+		field_error: io.Error;
+
+		for xlen >= 4 {
+			// println("Parsing Extra field(s).");
+			field_id, field_error = compress.read_data(z, [2]u8);
+			if field_error != .None {
+				// printf("Parsing Extra returned: %v\n", field_error);
+				return E_General.Stream_Too_Short;
+			}
+			xlen -= 2;
+			input_data_consumed += 2;
+
+			field_length, field_error = compress.read_data(z, u16le);
+			if field_error != .None {
+				// printf("Parsing Extra returned: %v\n", field_error);
+				return E_General.Stream_Too_Short;
+			}
+			xlen -= 2;
+			input_data_consumed += 2;
+
+			if xlen <= 0 {
+				// We're not going to try and recover by scanning for a ZLIB header.
+				// Who knows what else is wrong with this file.
+				return E_GZIP.Invalid_Extra_Data;
+			}
+
+			// printf("    Field \"%v\" of length %v found: ", string(field_id[:]), field_length);
+			if field_length > 0 {
+				b, field_error = compress.read_slice(z, int(field_length));
+				if field_error != .None {
+					// printf("Parsing Extra returned: %v\n", field_error);
+					return E_General.Stream_Too_Short;
+				}
+				xlen -= field_length;
+				input_data_consumed += int(field_length);
+
+				// printf("%v\n", string(field_data));
+			}
+
+			if xlen != 0 {
+				return E_GZIP.Invalid_Extra_Data;
+			}
+		}
+	}
+
+	if .name in header.flags {
+		// Should be enough.
+		name: [1024]u8;
+		i := 0;
+		name_error: io.Error;
+
+		for i < len(name) {
+			b, name_error = compress.read_slice(z, 1);
+			if name_error != .None {
+				return E_General.Stream_Too_Short;
+			}
+			input_data_consumed += 1;
+			if b[0] == 0 {
+				break;
+			}
+			name[i] = b[0];
+			i += 1;
+			if i >= len(name) {
+				return E_GZIP.Original_Name_Too_Long;
+			}
+		}
+		// printf("Original filename: %v\n", string(name[:i]));
+	}
+
+	if .comment in header.flags {
+		// Should be enough.
+		comment: [1024]u8;
+		i := 0;
+		comment_error: io.Error;
+
+		for i < len(comment) {
+			b, comment_error = compress.read_slice(z, 1);
+			if comment_error != .None {
+				return E_General.Stream_Too_Short;
+			}
+			input_data_consumed += 1;
+			if b[0] == 0 {
+				break;
+			}
+			comment[i] = b[0];
+			i += 1;
+			if i >= len(comment) {
+				return E_GZIP.Comment_Too_Long;
+			}
+		}
+		// printf("Comment: %v\n", string(comment[:i]));
+	}
+
+	if .header_crc in header.flags {
+		crc_error: io.Error;
+		_, crc_error = compress.read_slice(z, 2);
+		input_data_consumed += 2;
+		if crc_error != .None {
+			return E_General.Stream_Too_Short;
+		}
+		/*
+			We don't actually check the CRC16 (lower 2 bytes of CRC32 of header data until the CRC field).
+			If we find a gzip file in the wild that sets this field, we can add proper support for it.
+		*/
+	}
+
+	/*
+		We should have arrived at the ZLIB payload.
+	*/
+	payload_u32le: u32le;
+
+	// fmt.printf("known_gzip_size: %v | expected_output_size: %v\n", known_gzip_size, expected_output_size);
+
+	if expected_output_size > -1 {
+		/*
+			We already checked that it's not larger than the output buffer max,
+			or GZIP length field's max.
+
+			We'll just pass it on to `zlib.inflate_raw`;
+		*/
+	} else {
+		/*
+			If we know the size of the GZIP file *and* it is fully in memory,
+			then we can peek at the unpacked size at the end.
+
+			We'll still want to ensure there's capacity left in the output buffer when we write, of course.
+
+		*/
+		if known_gzip_size > -1 {
+			offset := i64(known_gzip_size - input_data_consumed - 4);
+			size, _ := compress.input_size(z);
+			if size >= offset + 4 {
+				length_bytes         := z.input_data[offset:][:4];
+				payload_u32le         = (^u32le)(&length_bytes[0])^;
+				expected_output_size = int(payload_u32le);
+			}
+		} else {
+			/*
+				TODO(Jeroen): When reading a GZIP from a stream, check if impl_seek is present.
+				If so, we can seek to the end, grab the size from the footer, and seek back to payload start.
+			*/
+		}
+	}
+
+	// fmt.printf("GZIP: Expected Payload Size: %v\n", expected_output_size);
+
+	zlib_error := zlib.inflate_raw(z=z, expected_output_size=expected_output_size);
+	if zlib_error != nil {
+		return zlib_error;
+	}
+	/*
+		Read CRC32 using the ctx bit reader because zlib may leave bytes in there.
+	*/
+	compress.discard_to_next_byte_lsb(z);
+
+	footer_error: io.Error;
+
+	payload_crc_b: [4]u8;
+	for _, i in payload_crc_b {
+		payload_crc_b[i], footer_error = compress.read_u8_prefer_code_buffer_lsb(z);
+	}
+	payload_crc := transmute(u32le)payload_crc_b;
+
+	payload := bytes.buffer_to_bytes(buf);
+	crc32   := u32le(hash.crc32(payload));
+	if crc32 != payload_crc {
+		return E_GZIP.Payload_CRC_Invalid;
+	}
+
+	payload_len_b: [4]u8;
+	for _, i in payload_len_b {
+		payload_len_b[i], footer_error = compress.read_u8_prefer_code_buffer_lsb(z);
+	}
+	payload_len := transmute(u32le)payload_len_b;
+
+	if len(payload) != int(payload_len) {
+		return E_GZIP.Payload_Length_Invalid;
+	}
+	return nil;
+}

core/compress/zlib/example.odin

@@ -0,0 +1,52 @@
+//+ignore
+package zlib
+
+/*
+	Copyright 2021 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-2 license.
+
+	List of contributors:
+		Jeroen van Rijn: Initial implementation.
+
+	An example of how to use `zlib.inflate`.
+*/
+
+import "core:bytes"
+import "core:fmt"
+
+main :: proc() {
+
+	ODIN_DEMO := []u8{
+		120, 156, 101, 144,  77, 110, 131,  48,  16, 133, 215, 204,  41, 158,  44,
+		 69,  73,  32, 148, 182,  75,  35,  14, 208, 125,  47,  96, 185, 195, 143,
+		130,  13,  50,  38,  81,  84, 101, 213,  75, 116, 215,  43, 246,   8,  53,
+		 82, 126,   8, 181, 188, 152, 153, 111, 222, 147, 159, 123, 165, 247, 170,
+		 98,  24, 213,  88, 162, 198, 244, 157, 243,  16, 186, 115,  44,  75, 227,
+		  5,  77, 115,  72, 137, 222, 117, 122, 179, 197,  39,  69, 161, 170, 156,
+		 50, 144,   5,  68, 130,   4,  49, 126, 127, 190, 191, 144,  34,  19,  57,
+		 69,  74, 235, 209, 140, 173, 242, 157, 155,  54, 158, 115, 162, 168,  12,
+		181, 239, 246, 108,  17, 188, 174, 242, 224,  20,  13, 199, 198, 235, 250,
+		194, 166, 129,  86,   3,  99, 157, 172,  37, 230,  62,  73, 129, 151, 252,
+		 70, 211,   5,  77,  31, 104, 188, 160, 113, 129, 215,  59, 205,  22,  52,
+		123, 160,  83, 142, 255, 242,  89, 123,  93, 149, 200,  50, 188,  85,  54,
+		252,  18, 248, 192, 238, 228, 235, 198,  86, 224, 118, 224, 176, 113, 166,
+		112,  67, 106, 227, 159, 122, 215,  88,  95, 110, 196, 123, 205, 183, 224,
+		 98,  53,   8, 104, 213, 234, 201, 147,   7, 248, 192,  14, 170,  29,  25,
+		171,  15,  18,  59, 138, 112,  63,  23, 205, 110, 254, 136, 109,  78, 231,
+		 63, 234, 138, 133, 204,
+	};
+	OUTPUT_SIZE :: 438;
+
+	buf: bytes.Buffer;
+
+	// We can pass ", true" to inflate a raw DEFLATE stream instead of a ZLIB wrapped one.
+	err := inflate(input=ODIN_DEMO, buf=&buf, expected_output_size=OUTPUT_SIZE);
+	defer bytes.buffer_destroy(&buf);
+
+	if err != nil {
+		fmt.printf("\nError: %v\n", err);
+	}
+	s := bytes.buffer_to_string(&buf);
+	fmt.printf("Input: %v bytes, output (%v bytes):\n%v\n", len(ODIN_DEMO), len(s), s);
+	assert(len(s) == OUTPUT_SIZE);
+}

core/compress/zlib/zlib.odin

@@ -0,0 +1,715 @@
+package zlib
+
+/*
+	Copyright 2021 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-2 license.
+
+	List of contributors:
+		Jeroen van Rijn: Initial implementation, optimization.
+		Ginger Bill:     Cosmetic changes.
+*/
+
+import "core:compress"
+
+import "core:mem"
+import "core:io"
+import "core:hash"
+import "core:bytes"
+
+/*
+	zlib.inflate decompresses a ZLIB stream passed in as a []u8 or io.Stream.
+	Returns: Error.
+*/
+
+/*
+	Do we do Adler32 as we write bytes to output?
+	It used to be faster to do it inline, now it's faster to do it at the end of `inflate`.
+
+	We'll see what's faster after more optimization, and might end up removing
+	`Context.rolling_hash` if not inlining it is still faster.
+
+*/
+
+Compression_Method :: enum u8 {
+	DEFLATE  = 8,
+	Reserved = 15,
+}
+
+Compression_Level :: enum u8 {
+	Fastest = 0,
+	Fast    = 1,
+	Default = 2,
+	Maximum = 3,
+}
+
+Options :: struct {
+	window_size: u16,
+	level: u8,
+}
+
+Error     :: compress.Error;
+E_General :: compress.General_Error;
+E_ZLIB    :: compress.ZLIB_Error;
+E_Deflate :: compress.Deflate_Error;
+
+DEFLATE_MAX_CHUNK_SIZE   :: 65535;
+DEFLATE_MAX_LITERAL_SIZE :: 65535;
+DEFLATE_MAX_DISTANCE     :: 32768;
+DEFLATE_MAX_LENGTH       :: 258;
+
+HUFFMAN_MAX_BITS  :: 16;
+HUFFMAN_FAST_BITS :: 9;
+HUFFMAN_FAST_MASK :: ((1 << HUFFMAN_FAST_BITS) - 1);
+
+Z_LENGTH_BASE := [31]u16{
+	3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,
+	67,83,99,115,131,163,195,227,258,0,0,
+};
+
+Z_LENGTH_EXTRA := [31]u8{
+	0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0,
+};
+
+Z_DIST_BASE := [32]u16{
+	1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,
+	257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0,
+};
+
+Z_DIST_EXTRA := [32]u8{
+	0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,0,0,
+};
+
+Z_LENGTH_DEZIGZAG := []u8{
+	16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15,
+};
+
+Z_FIXED_LENGTH := [288]u8{
+	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+	9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+	9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+	9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,
+};
+
+Z_FIXED_DIST := [32]u8{
+	5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+};
+
+/*
+	Accelerate all cases in default tables.
+*/
+ZFAST_BITS :: 9;
+ZFAST_MASK :: ((1 << ZFAST_BITS) - 1);
+
+/*
+	ZLIB-style Huffman encoding.
+	JPEG packs from left, ZLIB from right. We can't share code.
+*/
+Huffman_Table :: struct {
+	fast:        [1 << ZFAST_BITS]u16,
+	firstcode:   [16]u16,
+	maxcode:     [17]int,
+	firstsymbol: [16]u16,
+	size:        [288]u8,
+	value:       [288]u16,
+};
+
+// Implementation starts here
+@(optimization_mode="speed")
+z_bit_reverse :: #force_inline proc(n: u16, bits: u8) -> (r: u16) {
+	assert(bits <= 16);
+	// NOTE: Can optimize with llvm.bitreverse.i64 or some bit twiddling
+	// by reversing all of the bits and masking out the unneeded ones.
+	r = n;
+	r = ((r & 0xAAAA) >>  1) | ((r & 0x5555) << 1);
+	r = ((r & 0xCCCC) >>  2) | ((r & 0x3333) << 2);
+	r = ((r & 0xF0F0) >>  4) | ((r & 0x0F0F) << 4);
+	r = ((r & 0xFF00) >>  8) | ((r & 0x00FF) << 8);
+
+	r >>= (16 - bits);
+	return;
+}
+
+
+@(optimization_mode="speed")
+grow_buffer :: proc(buf: ^[dynamic]u8) -> (err: compress.Error) {
+	/*
+		That we get here at all means that we didn't pass an expected output size,
+		or that it was too little.
+	*/
+
+	/*
+		Double until we reach the maximum allowed.
+	*/
+	new_size := min(len(buf) << 1, compress.COMPRESS_OUTPUT_ALLOCATE_MAX);
+	resize(buf, new_size);
+	if len(buf) != new_size {
+		/*
+			Resize failed.
+		*/
+		return .Resize_Failed;
+	}
+
+	return nil;
+}
+
+/*
+	TODO: Make these return compress.Error.
+*/
+
+@(optimization_mode="speed")
+write_byte :: #force_inline proc(z: ^$C, c: u8) -> (err: io.Error) #no_bounds_check {
+	/*
+		Resize if needed.
+	*/
+	if int(z.bytes_written) + 1 >= len(z.output.buf) {
+		e := grow_buffer(&z.output.buf);
+		if e != nil {
+			return .Short_Write;
+		}
+	}
+
+	#no_bounds_check {
+		z.output.buf[z.bytes_written] = c;
+	}
+	z.bytes_written += 1;
+	return .None;
+}
+
+@(optimization_mode="speed")
+repl_byte :: proc(z: ^$C, count: u16, c: u8) -> (err: io.Error) 	#no_bounds_check {
+	/*
+		TODO(Jeroen): Once we have a magic ring buffer, we can just peek/write into it
+		without having to worry about wrapping, so no need for a temp allocation to give to
+		the output stream, just give it _that_ slice.
+	*/
+
+	/*
+	Resize if needed.
+	*/
+	if int(z.bytes_written) + int(count) >= len(z.output.buf) {
+		e := grow_buffer(&z.output.buf);
+		if e != nil {
+			return .Short_Write;
+		}
+	}
+
+	#no_bounds_check {
+		for _ in 0..<count {
+			z.output.buf[z.bytes_written] = c;
+			z.bytes_written += 1;
+		}
+	}
+
+	return .None;
+}
+
+@(optimization_mode="speed")
+repl_bytes :: proc(z: ^$C, count: u16, distance: u16) -> (err: io.Error) {
+	/*
+		TODO(Jeroen): Once we have a magic ring buffer, we can just peek/write into it
+		without having to worry about wrapping, so no need for a temp allocation to give to
+		the output stream, just give it _that_ slice.
+	*/
+
+	offset := i64(distance);
+
+	if int(z.bytes_written) + int(count) >= len(z.output.buf) {
+		e := grow_buffer(&z.output.buf);
+		if e != nil {
+			return .Short_Write;
+		}
+	}
+
+	#no_bounds_check {
+		for _ in 0..<count {
+			c := z.output.buf[z.bytes_written - offset];
+			z.output.buf[z.bytes_written] = c;
+			z.bytes_written += 1;
+		}
+	}
+
+	return .None;
+}
+
+
+allocate_huffman_table :: proc(allocator := context.allocator) -> (z: ^Huffman_Table, err: Error) {
+	return new(Huffman_Table, allocator), nil;
+}
+
+@(optimization_mode="speed")
+build_huffman :: proc(z: ^Huffman_Table, code_lengths: []u8) -> (err: Error) {
+	sizes:     [HUFFMAN_MAX_BITS+1]int;
+	next_code: [HUFFMAN_MAX_BITS]int;
+
+	k := int(0);
+
+	mem.zero_slice(sizes[:]);
+	mem.zero_slice(z.fast[:]);
+
+	for v in code_lengths {
+		sizes[v] += 1;
+	}
+	sizes[0] = 0;
+
+	for i in 1..<(HUFFMAN_MAX_BITS+1) {
+		if sizes[i] > (1 << uint(i)) {
+			return E_Deflate.Huffman_Bad_Sizes;
+		}
+	}
+	code := int(0);
+
+	for i in 1..<HUFFMAN_MAX_BITS {
+		next_code[i]     = code;
+		z.firstcode[i]   = u16(code);
+		z.firstsymbol[i] = u16(k);
+		code = code + sizes[i];
+		if sizes[i] != 0 {
+			if code - 1 >= (1 << u16(i)) {
+				return E_Deflate.Huffman_Bad_Code_Lengths;
+			}
+		}
+		z.maxcode[i] = code << (HUFFMAN_MAX_BITS - uint(i));
+		code <<= 1;
+		k += int(sizes[i]);
+	}
+
+	z.maxcode[HUFFMAN_MAX_BITS] = 0x10000; // Sentinel
+	c: int;
+
+	for v, ci in code_lengths {
+		if v != 0 {
+			c = next_code[v] - int(z.firstcode[v]) + int(z.firstsymbol[v]);
+			fastv := u16((u16(v) << 9) | u16(ci));
+			z.size[c]  = u8(v);
+			z.value[c] = u16(ci);
+			if v <= ZFAST_BITS {
+				j := z_bit_reverse(u16(next_code[v]), v);
+				for j < (1 << ZFAST_BITS) {
+					z.fast[j] = fastv;
+					j += (1 << v);
+				}
+			}
+			next_code[v] += 1;
+		}
+	}
+	return nil;
+}
+
+@(optimization_mode="speed")
+decode_huffman_slowpath :: proc(z: ^$C, t: ^Huffman_Table) -> (r: u16, err: Error) #no_bounds_check {
+	code := u16(compress.peek_bits_lsb(z,16));
+
+	k := int(z_bit_reverse(code, 16));
+	s: u8;
+
+	#no_bounds_check for s = HUFFMAN_FAST_BITS+1; ; {
+		if k < t.maxcode[s] {
+			break;
+		}
+		s += 1;
+	}
+	if s >= 16 {
+		return 0, E_Deflate.Bad_Huffman_Code;
+	}
+	// code size is s, so:
+	b := (k >> (16-s)) - int(t.firstcode[s]) + int(t.firstsymbol[s]);
+	if b >= size_of(t.size) {
+		return 0, E_Deflate.Bad_Huffman_Code;
+	}
+	if t.size[b] != s {
+		return 0, E_Deflate.Bad_Huffman_Code;
+	}
+
+	compress.consume_bits_lsb(z, s);
+
+	r = t.value[b];
+	return r, nil;
+}
+
+@(optimization_mode="speed")
+decode_huffman :: proc(z: ^$C, t: ^Huffman_Table) -> (r: u16, err: Error) #no_bounds_check {
+	if z.num_bits < 16 {
+		if z.num_bits > 63 {
+			return 0, E_ZLIB.Code_Buffer_Malformed;
+		}
+		compress.refill_lsb(z);
+		if z.num_bits > 63 {
+			return 0, E_General.Stream_Too_Short;
+		}
+	}
+	#no_bounds_check b := t.fast[z.code_buffer & ZFAST_MASK];
+	if b != 0 {
+		s := u8(b >> ZFAST_BITS);
+		compress.consume_bits_lsb(z, s);
+		return b & 511, nil;
+	}
+	return decode_huffman_slowpath(z, t);
+}
+
+@(optimization_mode="speed")
+parse_huffman_block :: proc(z: ^$C, z_repeat, z_offset: ^Huffman_Table) -> (err: Error) #no_bounds_check {
+	#no_bounds_check for {
+		value, e := decode_huffman(z, z_repeat);
+		if e != nil {
+			return err;
+		}
+		if value < 256 {
+			e := write_byte(z, u8(value));
+			if e != .None {
+				return E_General.Output_Too_Short;
+			}
+		} else {
+			if value == 256 {
+					// End of block
+					return nil;
+			}
+
+			value -= 257;
+			length := Z_LENGTH_BASE[value];
+			if Z_LENGTH_EXTRA[value] > 0 {
+				length += u16(compress.read_bits_lsb(z, Z_LENGTH_EXTRA[value]));
+			}
+
+			value, e = decode_huffman(z, z_offset);
+			if e != nil {
+				return E_Deflate.Bad_Huffman_Code;
+			}
+
+			distance := Z_DIST_BASE[value];
+			if Z_DIST_EXTRA[value] > 0 {
+				distance += u16(compress.read_bits_lsb(z, Z_DIST_EXTRA[value]));
+			}
+
+			if z.bytes_written < i64(distance) {
+				// Distance is longer than we've decoded so far.
+				return E_Deflate.Bad_Distance;
+			}
+
+			/*
+				These might be sped up with a repl_byte call that copies
+				from the already written output more directly, and that
+				update the Adler checksum once after.
+
+				That way we'd suffer less Stream vtable overhead.
+			*/
+			if distance == 1 {
+				/*
+					Replicate the last outputted byte, length times.
+				*/
+				if length > 0 {
+					c := z.output.buf[z.bytes_written - i64(distance)];
+					e := repl_byte(z, length, c);
+					if e != .None {
+						return E_General.Output_Too_Short;
+					}
+				}
+			} else {
+				if length > 0 {
+					e := repl_bytes(z, length, distance);
+					if e != .None {
+						return E_General.Output_Too_Short;
+					}
+				}
+			}
+		}
+	}
+}
+
+@(optimization_mode="speed")
+inflate_from_context :: proc(using ctx: ^compress.Context_Memory_Input, raw := false, expected_output_size := -1, allocator := context.allocator) -> (err: Error) #no_bounds_check {
+	/*
+		ctx.output must be a bytes.Buffer for now. We'll add a separate implementation that writes to a stream.
+
+		raw determines whether the ZLIB header is processed, or we're inflating a raw
+		DEFLATE stream.
+	*/
+
+	if !raw {
+		size, size_err := compress.input_size(ctx);
+		if size < 6 || size_err != nil {
+			return E_General.Stream_Too_Short;
+		}
+
+		cmf, _ := compress.read_u8(ctx);
+
+		method := Compression_Method(cmf & 0xf);
+		if method != .DEFLATE {
+			return E_General.Unknown_Compression_Method;
+		}
+
+		cinfo  := (cmf >> 4) & 0xf;
+		if cinfo > 7 {
+			return E_ZLIB.Unsupported_Window_Size;
+		}
+		flg, _ := compress.read_u8(ctx);
+
+		fcheck  := flg & 0x1f;
+		fcheck_computed := (cmf << 8 | flg) & 0x1f;
+		if fcheck != fcheck_computed {
+			return E_General.Checksum_Failed;
+		}
+
+		fdict   := (flg >> 5) & 1;
+		/*
+			We don't handle built-in dictionaries for now.
+			They're application specific and PNG doesn't use them.
+		*/
+		if fdict != 0 {
+			return E_ZLIB.FDICT_Unsupported;
+		}
+
+		// flevel  := Compression_Level((flg >> 6) & 3);
+		/*
+			Inflate can consume bits belonging to the Adler checksum.
+			We pass the entire stream to Inflate and will unget bytes if we need to
+			at the end to compare checksums.
+		*/
+
+	}
+
+	// Parse ZLIB stream without header.
+	err = inflate_raw(z=ctx, expected_output_size=expected_output_size);
+	if err != nil {
+		return err;
+	}
+
+	if !raw {
+		compress.discard_to_next_byte_lsb(ctx);
+
+		adler_b: [4]u8;
+		for _, i in adler_b {
+			adler_b[i], _ = compress.read_u8_prefer_code_buffer_lsb(ctx);
+		}
+		adler := transmute(u32be)adler_b;
+
+		output_hash := hash.adler32(ctx.output.buf[:]);
+
+		if output_hash != u32(adler) {
+			return E_General.Checksum_Failed;
+		}
+	}
+	return nil;
+}
+
+// TODO: Check alignment of reserve/resize.
+
+@(optimization_mode="speed")
+inflate_raw :: proc(z: ^$C, expected_output_size := -1, allocator := context.allocator) -> (err: Error) #no_bounds_check {
+	expected_output_size := expected_output_size;
+
+	/*
+		Always set up a minimum allocation size.
+	*/
+	expected_output_size = max(max(expected_output_size, compress.COMPRESS_OUTPUT_ALLOCATE_MIN), 512);
+
+	// fmt.printf("\nZLIB: Expected Payload Size: %v\n\n", expected_output_size);
+
+	if expected_output_size > 0 && expected_output_size <= compress.COMPRESS_OUTPUT_ALLOCATE_MAX {
+		/*
+			Try to pre-allocate the output buffer.
+		*/
+		reserve(&z.output.buf, expected_output_size);
+		resize (&z.output.buf, expected_output_size);
+	};
+
+	if len(z.output.buf) != expected_output_size {
+		return .Resize_Failed;
+	}
+
+	z.num_bits    = 0;
+	z.code_buffer = 0;
+
+	z_repeat:      ^Huffman_Table;
+	z_offset:      ^Huffman_Table;
+	codelength_ht: ^Huffman_Table;
+
+	z_repeat, err = allocate_huffman_table(allocator=context.allocator);
+	if err != nil {
+		return err;
+	}
+	z_offset, err = allocate_huffman_table(allocator=context.allocator);
+	if err != nil {
+		return err;
+	}
+	codelength_ht, err = allocate_huffman_table(allocator=context.allocator);
+	if err != nil {
+		return err;
+	}
+	defer free(z_repeat);
+	defer free(z_offset);
+	defer free(codelength_ht);
+
+	final := u32(0);
+	type  := u32(0);
+
+	for {
+		final = compress.read_bits_lsb(z, 1);
+		type  = compress.read_bits_lsb(z, 2);
+
+		// fmt.printf("Final: %v | Type: %v\n", final, type);
+
+		switch type {
+		case 0:
+			// Uncompressed block
+
+			// Discard bits until next byte boundary
+			compress.discard_to_next_byte_lsb(z);
+
+			uncompressed_len  := i16(compress.read_bits_lsb(z, 16));
+			length_check      := i16(compress.read_bits_lsb(z, 16));
+
+			// fmt.printf("LEN: %v, ~LEN: %v, NLEN: %v, ~NLEN: %v\n", uncompressed_len, ~uncompressed_len, length_check, ~length_check);
+
+
+			if ~uncompressed_len != length_check {
+				return E_Deflate.Len_Nlen_Mismatch;
+			}
+
+			/*
+				TODO: Maybe speed this up with a stream-to-stream copy (read_from)
+				and a single Adler32 update after.
+			*/
+			#no_bounds_check for uncompressed_len > 0 {
+				compress.refill_lsb(z);
+				lit := compress.read_bits_lsb(z, 8);
+				write_byte(z, u8(lit));
+				uncompressed_len -= 1;
+			}
+		case 3:
+			return E_Deflate.BType_3;
+		case:
+			// log.debugf("Err: %v | Final: %v | Type: %v\n", err, final, type);
+			if type == 1 {
+				// Use fixed code lengths.
+				err = build_huffman(z_repeat, Z_FIXED_LENGTH[:]);
+				if err != nil {
+					return err;
+				}
+				err = build_huffman(z_offset, Z_FIXED_DIST[:]);
+				if err != nil {
+					return err;
+				}
+			} else {
+				lencodes: [286+32+137]u8;
+				codelength_sizes: [19]u8;
+
+				//i: u32;
+				n: u32;
+
+				compress.refill_lsb(z, 14);
+				hlit  := compress.read_bits_no_refill_lsb(z, 5) + 257;
+				hdist := compress.read_bits_no_refill_lsb(z, 5) + 1;
+				hclen := compress.read_bits_no_refill_lsb(z, 4) + 4;
+				ntot  := hlit + hdist;
+
+				#no_bounds_check for i in 0..<hclen {
+					s := compress.read_bits_lsb(z, 3);
+					codelength_sizes[Z_LENGTH_DEZIGZAG[i]] = u8(s);
+				}
+				err = build_huffman(codelength_ht, codelength_sizes[:]);
+				if err != nil {
+					return err;
+				}
+
+				n = 0;
+				c: u16;
+
+				for n < ntot {
+					c, err = decode_huffman(z, codelength_ht);
+					if err != nil {
+						return err;
+					}
+
+					if c < 0 || c >= 19 {
+						return E_Deflate.Huffman_Bad_Code_Lengths;
+					}
+					if c < 16 {
+						lencodes[n] = u8(c);
+						n += 1;
+					} else {
+						fill := u8(0);
+						compress.refill_lsb(z, 7);
+						switch c {
+						case 16:
+							c = u16(compress.read_bits_no_refill_lsb(z, 2) + 3);
+							if n == 0 {
+								return E_Deflate.Huffman_Bad_Code_Lengths;
+							}
+							fill = lencodes[n - 1];
+						case 17:
+							c = u16(compress.read_bits_no_refill_lsb(z, 3) + 3);
+						case 18:
+							c = u16(compress.read_bits_no_refill_lsb(z, 7) + 11);
+						case:
+								return E_Deflate.Huffman_Bad_Code_Lengths;
+						}
+
+						if ntot - n < u32(c) {
+							return E_Deflate.Huffman_Bad_Code_Lengths;
+						}
+
+						nc := n + u32(c);
+						#no_bounds_check for ; n < nc; n += 1 {
+							lencodes[n] = fill;
+						}
+					}
+				}
+
+				if n != ntot {
+					return E_Deflate.Huffman_Bad_Code_Lengths;
+				}
+
+				err = build_huffman(z_repeat, lencodes[:hlit]);
+				if err != nil {
+					return err;
+				}
+
+				err = build_huffman(z_offset, lencodes[hlit:ntot]);
+				if err != nil {
+					return err;
+				}
+			}
+			err = parse_huffman_block(z, z_repeat, z_offset);
+			// log.debugf("Err: %v | Final: %v | Type: %v\n", err, final, type);
+			if err != nil {
+				return err;
+			}
+		}
+		if final == 1 {
+			break;
+		}
+	}
+
+	if int(z.bytes_written) != len(z.output.buf) {
+		resize(&z.output.buf, int(z.bytes_written));
+	}
+
+	return nil;
+}
+
+inflate_from_byte_array :: proc(input: []u8, buf: ^bytes.Buffer, raw := false, expected_output_size := -1) -> (err: Error) {
+	ctx := compress.Context_Memory_Input{};
+
+	ctx.input_data = input;
+	ctx.output = buf;
+
+	err = inflate_from_context(ctx=&ctx, raw=raw, expected_output_size=expected_output_size);
+
+	return err;
+}
+
+inflate_from_byte_array_raw :: proc(input: []u8, buf: ^bytes.Buffer, raw := false, expected_output_size := -1) -> (err: Error) {
+	ctx := compress.Context_Memory_Input{};
+
+	ctx.input_data = input;
+	ctx.output = buf;
+
+	return inflate_raw(z=&ctx, expected_output_size=expected_output_size);
+}
+
+inflate     :: proc{inflate_from_context, inflate_from_byte_array};

core/container/array.odin

@@ -0,0 +1,216 @@
+package container
+
+import "core:mem"
+import "core:runtime"
+
+Array :: struct($T: typeid) {
+	data:      ^T,
+	len:       int,
+	cap:       int,
+	allocator: mem.Allocator,
+}
+
+ARRAY_DEFAULT_CAPACITY :: 16;
+
+/*
+array_init :: proc {
+	array_init_none,
+	array_init_len,
+	array_init_len_cap,
+}
+array_init
+array_delete
+array_len
+array_cap
+array_space
+array_slice
+array_get
+array_get_ptr
+array_set
+array_reserve
+array_resize
+array_push = array_append :: proc{
+	array_push_back,
+	array_push_back_elems,
+}
+array_push_front
+array_pop_back
+array_pop_front
+array_consume
+array_trim
+array_clear
+array_clone
+array_set_capacity
+array_grow
+*/
+
+
+array_init_none :: proc(a: ^$A/Array, allocator := context.allocator) {
+	array_init_len_cap(a, 0, ARRAY_DEFAULT_CAPACITY, allocator);
+}
+array_init_len :: proc(a: ^$A/Array, len: int, allocator := context.allocator) {
+	array_init_len_cap(a, len, len, allocator);
+}
+array_init_len_cap :: proc(a: ^$A/Array($T), len: int, cap: int, allocator := context.allocator) {
+	a.allocator = allocator;
+	a.data = (^T)(mem.alloc(size_of(T)*cap, align_of(T), a.allocator));
+	a.len = len;
+	a.cap = cap;
+}
+
+array_init :: proc{array_init_none, array_init_len, array_init_len_cap};
+
+array_delete :: proc(a: $A/Array) {
+	mem.free(a.data, a.allocator);
+}
+
+array_len :: proc(a: $A/Array) -> int {
+	return a.len;
+}
+
+array_cap :: proc(a: $A/Array) -> int {
+	return a.cap;
+}
+
+array_space :: proc(a: $A/Array) -> int {
+	return a.cap - a.len;
+}
+
+array_slice :: proc(a: $A/Array($T)) -> []T {
+	s := mem.Raw_Slice{a.data, a.len};
+	return transmute([]T)s;
+}
+
+array_cap_slice :: proc(a: $A/Array($T)) -> []T {
+	s := mem.Raw_Slice{a.data, a.cap};
+	return transmute([]T)s;
+}
+
+array_get :: proc(a: $A/Array($T), index: int, loc := #caller_location) -> T {
+	runtime.bounds_check_error_loc(loc, index, array_len(a));
+	return (^T)(uintptr(a.data) + size_of(T)*uintptr(index))^;
+}
+array_get_ptr :: proc(a: $A/Array($T), index: int, loc := #caller_location) -> ^T {
+	runtime.bounds_check_error_loc(loc, index, array_len(a));
+	return (^T)(uintptr(a.data) + size_of(T)*uintptr(index));
+}
+
+array_set :: proc(a: ^$A/Array($T), index: int, item: T, loc := #caller_location)  {
+	runtime.bounds_check_error_loc(loc, index, array_len(a^));
+	(^T)(uintptr(a.data) + size_of(T)*uintptr(index))^ = item;
+}
+
+
+array_reserve :: proc(a: ^$A/Array, capacity: int) {
+	if capacity > a.len {
+		array_set_capacity(a, capacity);
+	}
+}
+
+array_resize :: proc(a: ^$A/Array, length: int) {
+	if length > a.len {
+		array_set_capacity(a, length);
+	}
+	a.len = length;
+}
+
+
+
+array_push_back :: proc(a: ^$A/Array($T), item: T) {
+	if array_space(a^) == 0 {
+		array_grow(a);
+	}
+
+	a.len += 1;
+	array_set(a, a.len-1, item);
+}
+
+array_push_front :: proc(a: ^$A/Array($T), item: T) {
+	if array_space(a^) == 0 {
+		array_grow(a);
+	}
+
+	a.len += 1;
+	data := array_slice(a^);
+	copy(data[1:], data[:]);
+	data[0] = item;
+}
+
+array_pop_back :: proc(a: ^$A/Array($T), loc := #caller_location) -> T {
+	assert(condition=a.len > 0, loc=loc);
+	item := array_get(a^, a.len-1);
+	a.len -= 1;
+	return item;
+}
+
+array_pop_front :: proc(a: ^$A/Array($T), loc := #caller_location) -> T {
+	assert(condition=a.len > 0, loc=loc);
+	item := array_get(a^, 0);
+	s := array_slice(a^);
+	copy(s[:], s[1:]);
+	a.len -= 1;
+	return item;
+}
+
+
+array_consume :: proc(a: ^$A/Array($T), count: int, loc := #caller_location) {
+	assert(condition=a.len >= count, loc=loc);
+	a.len -= count;
+}
+
+
+array_trim :: proc(a: ^$A/Array($T)) {
+	array_set_capacity(a, a.len);
+}
+
+array_clear :: proc(a: ^$A/Array($T)) {
+	array_resize(a, 0);
+}
+
+array_clone :: proc(a: $A/Array($T), allocator := context.allocator) -> A {
+	res: A;
+	array_init(&res, array_len(a), array_len(a), allocator);
+	copy(array_slice(res), array_slice(a));
+	return res;
+}
+
+array_push_back_elems :: proc(a: ^$A/Array($T), items: ..T) {
+	if array_space(a^) < len(items) {
+		array_grow(a, a.len + len(items));
+	}
+	offset := a.len;
+	data := array_cap_slice(a^);
+	n := copy(data[a.len:], items);
+	a.len += n;
+}
+
+array_push   :: proc{array_push_back, array_push_back_elems};
+array_append :: proc{array_push_back, array_push_back_elems};
+
+array_set_capacity :: proc(a: ^$A/Array($T), new_capacity: int) {
+	if new_capacity == a.cap {
+		return;
+	}
+
+	if new_capacity < a.len {
+		array_resize(a, new_capacity);
+	}
+
+	new_data: ^T;
+	if new_capacity > 0 {
+		if a.allocator.procedure == nil {
+			a.allocator = context.allocator;
+		}
+		new_data = (^T)(mem.alloc(size_of(T)*new_capacity, align_of(T), a.allocator));
+		if new_data != nil {
+			mem.copy(new_data, a.data, size_of(T)*a.len);
+		}
+	}
+	mem.free(a.data, a.allocator);
+	a.data = new_data;
+	a.cap = new_capacity;
+}
+array_grow :: proc(a: ^$A/Array, min_capacity: int = 0) {
+	new_capacity := max(array_len(a^)*2 + 8, min_capacity);
+	array_set_capacity(a, new_capacity);
+}

core/container/bloom_filter.odin

@@ -0,0 +1,80 @@
+package container
+
+import "core:mem"
+
+Bloom_Hash_Proc :: #type proc(data: []byte) -> u32;
+
+Bloom_Hash :: struct {
+	hash_proc: Bloom_Hash_Proc,
+	next:     ^Bloom_Hash,
+}
+
+Bloom_Filter :: struct {
+	allocator: mem.Allocator,
+	hash:      ^Bloom_Hash,
+	bits:      []byte,
+}
+
+bloom_filter_init :: proc(b: ^Bloom_Filter, size: int, allocator := context.allocator) {
+	b.allocator = allocator;
+	b.bits = make([]byte, size, allocator);
+}
+
+bloom_filter_destroy :: proc(b: ^Bloom_Filter) {
+	context.allocator = b.allocator;
+	delete(b.bits);
+	for b.hash != nil {
+		hash := b.hash;
+		b.hash = b.hash.next;
+		free(hash);
+	}
+}
+
+bloom_filter_add_hash_proc :: proc(b: ^Bloom_Filter, hash_proc: Bloom_Hash_Proc) {
+	context.allocator = b.allocator;
+	h := new(Bloom_Hash);
+	h.hash_proc = hash_proc;
+
+	head := &b.hash;
+	for head^ != nil {
+		head = &(head^.next);
+	}
+	head^ = h;
+}
+
+bloom_filter_add :: proc(b: ^Bloom_Filter, item: []byte) {
+	#no_bounds_check for h := b.hash; h != nil; h = h.next {
+		hash := h.hash_proc(item);
+		hash %= u32(len(b.bits) * 8);
+		b.bits[hash >> 3] |= 1 << (hash & 3);
+	}
+}
+
+bloom_filter_add_string :: proc(b: ^Bloom_Filter, item: string) {
+	bloom_filter_add(b, transmute([]byte)item);
+}
+
+bloom_filter_add_raw :: proc(b: ^Bloom_Filter, data: rawptr, size: int) {
+	item := mem.slice_ptr((^byte)(data), size);
+	bloom_filter_add(b, item);
+}
+
+bloom_filter_test :: proc(b: ^Bloom_Filter, item: []byte) -> bool {
+	#no_bounds_check for h := b.hash; h != nil; h = h.next {
+		hash := h.hash_proc(item);
+		hash %= u32(len(b.bits) * 8);
+		if (b.bits[hash >> 3] & (1 << (hash & 3)) == 0) {
+			return false;
+		}
+	}
+	return true;
+}
+
+bloom_filter_test_string :: proc(b: ^Bloom_Filter, item: string) -> bool {
+	return bloom_filter_test(b, transmute([]byte)item);
+}
+
+bloom_filter_test_raw :: proc(b: ^Bloom_Filter, data: rawptr, size: int) -> bool {
+	item := mem.slice_ptr((^byte)(data), size);
+	return bloom_filter_test(b, item);
+}

core/container/map.odin

@@ -0,0 +1,377 @@
+package container
+
+import "intrinsics"
+_ :: intrinsics;
+
+
+Map :: struct($Key, $Value: typeid) where intrinsics.type_is_valid_map_key(Key) {
+	hash: Array(int),
+	entries: Array(Map_Entry(Key, Value)),
+}
+
+Map_Entry :: struct($Key, $Value: typeid) where intrinsics.type_is_valid_map_key(Key) {
+	hash:  uintptr,
+	next:  int,
+	key:   Key,
+	value: Value,
+}
+
+
+/*
+map_init :: proc{
+	map_init_none,
+	map_init_cap,
+}
+map_delete
+
+map_has
+map_get
+map_get_default
+map_get_ptr
+map_set
+map_remove
+map_reserve
+map_clear
+
+// Multi Map
+
+multi_map_find_first
+multi_map_find_next
+multi_map_count
+multi_map_get :: proc{
+	multi_map_get_array,
+	multi_map_get_slice,
+};
+multi_map_get_as_slice
+multi_map_insert
+multi_map_remove
+multi_map_remove_all
+
+*/
+
+map_init :: proc{map_init_none, map_init_cap};
+
+map_init_none :: proc(m: ^$M/Map($Key, $Value), allocator := context.allocator) {
+	m.hash.allocator = allocator;
+	m.entries.allocator = allocator;
+}
+
+map_init_cap :: proc(m: ^$M/Map($Key, $Value), cap: int, allocator := context.allocator) {
+	m.hash.allocator = allocator;
+	m.entries.allocator = allocator;
+	map_reserve(m, cap);
+}
+
+map_delete :: proc(m: $M/Map($Key, $Value)) {
+	array_delete(m.hash);
+	array_delete(m.entries);
+}
+
+
+map_has :: proc(m: $M/Map($Key, $Value), key: Key) -> bool {
+	return _map_find_or_fail(m, key) >= 0;
+}
+
+map_get :: proc(m: $M/Map($Key, $Value), key: Key) -> (res: Value, ok: bool) #optional_ok {
+	i := _map_find_or_fail(m, key);
+	if i < 0 {
+		return {}, false;
+	}
+	return array_get(m.entries, i).value, true;
+}
+
+map_get_default :: proc(m: $M/Map($Key, $Value), key: Key, default: Value) -> (res: Value, ok: bool) #optional_ok {
+	i := _map_find_or_fail(m, key);
+	if i < 0 {
+		return default, false;
+	}
+	return array_get(m.entries, i).value, true;
+}
+
+map_get_ptr :: proc(m: $M/Map($Key, $Value), key: Key) -> ^Value {
+	i := _map_find_or_fail(m, key);
+	if i < 0 {
+		return nil;
+	}
+	return array_get_ptr(m.entries, i).value;
+}
+
+map_set :: proc(m: ^$M/Map($Key, $Value), key: Key, value: Value) {
+	if array_len(m.hash) == 0 {
+		_map_grow(m);
+	}
+
+	i := _map_find_or_make(m, key);
+	array_get_ptr(m.entries, i).value = value;
+	if _map_full(m^) {
+		_map_grow(m);
+	}
+}
+
+map_remove :: proc(m: ^$M/Map($Key, $Value), key: Key) {
+	fr := _map_find_key(m^, key);
+	if fr.entry_index >= 0 {
+		_map_erase(m, fr);
+	}
+}
+
+
+map_reserve :: proc(m: ^$M/Map($Key, $Value), new_size: int) {
+	nm: M;
+	map_init(&nm, m.hash.allocator);
+	array_resize(&nm.hash, new_size);
+	array_reserve(&nm.entries, array_len(m.entries));
+
+	for i in 0..<new_size {
+		array_set(&nm.hash, i, -1);
+	}
+	for i in 0..<array_len(m.entries) {
+		e := array_get(m.entries, i);
+		multi_map_insert(&nm, e.key, e.value);
+	}
+
+	map_delete(m^);
+	m^ = nm;
+}
+
+map_clear :: proc(m: ^$M/Map($Key, $Value)) {
+	array_clear(&m.hash);
+	array_clear(&m.entries);
+}
+
+
+
+multi_map_find_first :: proc(m: $M/Map($Key, $Value), key: Key) -> ^Map_Entry(Key, Value) {
+	i := _map_find_or_fail(m, key);
+	if i < 0 {
+		return nil;
+	}
+	return array_get_ptr(m.entries, i);
+}
+
+multi_map_find_next :: proc(m: $M/Map($Key, $Value), e: ^Map_Entry(Key, Value)) -> ^Map_Entry(Key, Value) {
+	i := e.next;
+	for i >= 0 {
+		it := array_get_ptr(m.entries, i);
+		if it.hash == e.hash && it.key == e.key {
+			return it;
+		}
+		i = it.next;
+	}
+	return nil;
+}
+
+multi_map_count :: proc(m: $M/Map($Key, $Value), key: Key) -> int {
+	n := 0;
+	e := multi_map_find_first(m, key);
+	for e != nil {
+		n += 1;
+		e = multi_map_find_next(m, e);
+	}
+	return n;
+}
+
+multi_map_get :: proc{multi_map_get_array, multi_map_get_slice};
+
+multi_map_get_array :: proc(m: $M/Map($Key, $Value), key: Key, items: ^Array(Value)) {
+	if items == nil {
+		return;
+	}
+	e := multi_map_find_first(m, key);
+	for e != nil {
+		array_append(items, e.value);
+		e = multi_map_find_next(m, e);
+	}
+}
+
+multi_map_get_slice :: proc(m: $M/Map($Key, $Value), key: Key, items: []Value) {
+	e := multi_map_find_first(m, key);
+	i := 0;
+	for e != nil && i < len(items) {
+		items[i] = e.value;
+		i += 1;
+		e = multi_map_find_next(m, e);
+	}
+}
+
+multi_map_get_as_slice :: proc(m: $M/Map($Key, $Value), key: Key) -> []Value {
+	items: Array(Value);
+	array_init(&items, 0);
+
+	e := multi_map_find_first(m, key);
+	for e != nil {
+		array_append(&items, e.value);
+		e = multi_map_find_next(m, e);
+	}
+
+	return array_slice(items);
+}
+
+
+multi_map_insert :: proc(m: ^$M/Map($Key, $Value), key: Key, value: Value) {
+	if array_len(m.hash) == 0 {
+		_map_grow(m);
+	}
+
+	i := _map_make(m, key);
+	array_get_ptr(m.entries, i).value = value;
+	if _map_full(m^) {
+		_map_grow(m);
+	}
+}
+
+multi_map_remove :: proc(m: ^$M/Map($Key, $Value), e: ^Map_Entry(Key, Value)) {
+	fr := _map_find_entry(m, e);
+	if fr.entry_index >= 0 {
+		_map_erase(m, fr);
+	}
+}
+
+multi_map_remove_all :: proc(m: ^$M/Map($Key, $Value), key: Key) {
+	for map_exist(m^, key) {
+		map_remove(m, key);
+	}
+}
+
+
+/// Internal
+
+
+Map_Find_Result :: struct {
+	hash_index:  int,
+	entry_prev:  int,
+	entry_index: int,
+}
+
+_map_add_entry :: proc(m: ^$M/Map($Key, $Value), key: Key) -> int where intrinsics.type_is_valid_map_key(Key) {
+	hasher := intrinsics.type_hasher_proc(Key);
+
+	e: Map_Entry(Key, Value);
+	e.key = key;
+	e.hash = hasher(&e.key, 0);
+	e.next = -1;
+	idx := array_len(m.entries);
+	array_push(&m.entries, e);
+	return idx;
+}
+
+_map_erase :: proc(m: ^$M/Map, fr: Map_Find_Result) {
+	if fr.entry_prev < 0 {
+		array_set(&m.hash, fr.hash_index, array_get(m.entries, fr.entry_index).next);
+	} else {
+		array_get_ptr(m.entries, fr.entry_prev).next = array_get(m.entries, fr.entry_index).next;
+	}
+
+	if fr.entry_index == array_len(m.entries)-1 {
+		array_pop_back(&m.entries);
+		return;
+	}
+
+	array_set(&m.entries, fr.entry_index, array_get(m.entries, array_len(m.entries)-1));
+	last := _map_find_key(m^, array_get(m.entries, fr.entry_index).key);
+
+	if last.entry_prev < 0 {
+		array_get_ptr(m.entries, last.entry_prev).next = fr.entry_index;
+	} else {
+		array_set(&m.hash, last.hash_index, fr.entry_index);
+	}
+}
+
+
+_map_find_key :: proc(m: $M/Map($Key, $Value), key: Key) -> Map_Find_Result where intrinsics.type_is_valid_map_key(Key) {
+	fr: Map_Find_Result;
+	fr.hash_index = -1;
+	fr.entry_prev = -1;
+	fr.entry_index = -1;
+
+	if array_len(m.hash) == 0 {
+		return fr;
+	}
+
+	hasher := intrinsics.type_hasher_proc(Key);
+
+	key := key;
+	hash := hasher(&key, 0);
+
+	fr.hash_index = int(hash % uintptr(array_len(m.hash)));
+	fr.entry_index = array_get(m.hash, fr.hash_index);
+	for fr.entry_index >= 0 {
+		it := array_get_ptr(m.entries, fr.entry_index);
+		if it.hash == hash && it.key == key {
+			return fr;
+		}
+		fr.entry_prev = fr.entry_index;
+		fr.entry_index = it.next;
+	}
+	return fr;
+}
+
+_map_find_entry :: proc(m: ^$M/Map($Key, $Value), e: ^Map_Entry(Key, Value)) -> Map_Find_Result {
+	fr: Map_Find_Result;
+	fr.hash_index = -1;
+	fr.entry_prev = -1;
+	fr.entry_index = -1;
+
+	if array_len(m.hash) == 0 {
+		return fr;
+	}
+
+	fr.hash_index = int(e.hash % uintptr(array_len(m.hash)));
+	fr.entry_index = array_get(m.hash, fr.hash_index);
+	for fr.entry_index >= 0 {
+		it := array_get_ptr(m.entries, fr.entry_index);
+		if it == e {
+			return fr;
+		}
+		fr.entry_prev = fr.entry_index;
+		fr.entry_index = it.next;
+	}
+	return fr;
+}
+
+_map_find_or_fail :: proc(m: $M/Map($Key, $Value), key: Key) -> int {
+	return _map_find_key(m, key).entry_index;
+}
+_map_find_or_make :: proc(m: ^$M/Map($Key, $Value), key: Key) -> int {
+	fr := _map_find_key(m^, key);
+	if fr.entry_index >= 0 {
+		return fr.entry_index;
+	}
+
+	i := _map_add_entry(m, key);
+	if fr.entry_prev < 0 {
+		array_set(&m.hash, fr.hash_index, i);
+	} else {
+		array_get_ptr(m.entries, fr.entry_prev).next = i;
+	}
+	return i;
+}
+
+
+_map_make :: proc(m: ^$M/Map($Key, $Value), key: Key) -> int {
+	fr := _map_find_key(m^, key);
+	i := _map_add_entry(m, key);
+
+	if fr.entry_prev < 0 {
+		array_set(&m.hash, fr.hash_index, i);
+	} else {
+		array_get_ptr(m.entries, fr.entry_prev).next = i;
+	}
+
+	array_get_ptr(m.entries, i).next = fr.entry_index;
+
+	return i;
+}
+
+
+_map_full :: proc(m: $M/Map($Key, $Value)) -> bool {
+	// TODO(bill): Determine good max load factor
+	return array_len(m.entries) >= (array_len(m.hash) / 4)*3;
+}
+
+_map_grow :: proc(m: ^$M/Map($Key, $Value)) {
+	new_size := array_len(m.entries) * 4 + 7; // TODO(bill): Determine good grow rate
+	map_reserve(m, new_size);
+}
+
+

core/container/priority_queue.odin

@@ -0,0 +1,113 @@
+package container
+
+Priority_Queue :: struct($T: typeid) {
+	data: Array(T),
+	len: int,
+	priority: proc(item: T) -> int,
+}
+
+priority_queue_init_none :: proc(q: ^$Q/Priority_Queue($T), f: proc(item: T) -> int, allocator := context.allocator) {
+	queue_init_len(q, f, 0, allocator);
+}
+priority_queue_init_len :: proc(q: ^$Q/Priority_Queue($T), f: proc(item: T) -> int, len: int, allocator := context.allocator) {
+	queue_init_len_cap(q, f, 0, 16, allocator);
+}
+priority_queue_init_len_cap :: proc(q: ^$Q/Priority_Queue($T), f: proc(item: T) -> int, len: int, cap: int, allocator := context.allocator) {
+	array_init(&q.data, len, cap, allocator);
+	q.len = len;
+	q.priority = f;
+}
+
+priority_queue_init :: proc{priority_queue_init_none, priority_queue_init_len, priority_queue_init_len_cap};
+
+
+priority_queue_delete :: proc(q: $Q/Priority_Queue($T)) {
+	array_delete(q.data);
+}
+
+priority_queue_clear :: proc(q: ^$Q/Priority_Queue($T)) {
+	q.len = 0;
+}
+
+priority_queue_len :: proc(q: $Q/Priority_Queue($T)) -> int {
+	return q.len;
+}
+
+priority_queue_cap :: proc(q: $Q/Priority_Queue($T)) -> int {
+	return array_cap(q.data);
+}
+
+priority_queue_space :: proc(q: $Q/Priority_Queue($T)) -> int {
+	return array_len(q.data) - q.len;
+}
+
+priority_queue_reserve :: proc(q: ^$Q/Priority_Queue($T), capacity: int) {
+	if capacity > q.len {
+		array_resize(&q.data, new_capacity);
+	}
+}
+
+priority_queue_resize :: proc(q: ^$Q/Priority_Queue($T), length: int) {
+	if length > q.len {
+		array_resize(&q.data, new_capacity);
+	}
+	q.len = length;
+}
+
+_priority_queue_grow :: proc(q: ^$Q/Priority_Queue($T), min_capacity: int = 0) {
+	new_capacity := max(array_len(q.data)*2 + 8, min_capacity);
+	array_resize(&q.data, new_capacity);
+}
+
+
+priority_queue_push :: proc(q: ^$Q/Priority_Queue($T), item: T) {
+	if array_len(q.data) - q.len == 0 {
+		_priority_queue_grow(q);
+	}
+
+	s := array_slice(q.data);
+	s[q.len] = item;
+
+	i := q.len;
+	for i > 0 {
+		p := (i - 1) / 2;
+		if q.priority(s[p]) <= q.priority(item) do break;
+		s[i] = s[p];
+		i = p;
+	}
+
+	q.len += 1;
+	if q.len > 0 do s[i] = item;
+}
+
+
+
+priority_queue_pop :: proc(q: ^$Q/Priority_Queue($T)) -> T {
+	assert(q.len > 0);
+
+	s := array_slice(q.data);
+	min := s[0];
+	root := s[q.len-1];
+	q.len -= 1;
+
+	i := 0;
+	for i * 2 + 1 < q.len {
+		a := i * 2 + 1;
+		b := i * 2 + 2;
+		c := b < q.len && q.priority(s[b]) < q.priority(s[a]) ? b : a;
+
+		if q.priority(s[c]) >= q.priority(root) do break;
+		s[i] = s[c];
+		i = c;
+	}
+
+	if q.len > 0 do s[i] = root;
+	return min;
+}
+
+priority_queue_peek :: proc(q: ^$Q/Priority_Queue($T)) -> T {
+	assert(q.len > 0);
+
+	s := array_slice(q.data);
+	return s[0];
+}

core/container/queue.odin

@@ -0,0 +1,175 @@
+package container
+
+Queue :: struct($T: typeid) {
+	data: Array(T),
+	len: int,
+	offset: int,
+}
+
+/*
+queue_init :: proc{
+	queue_init_none,
+	queue_init_len,
+	queue_init_len_cap,
+}
+queue_delete
+queue_clear
+queue_len
+queue_cap
+queue_space
+queue_get
+queue_set
+queue_reserve
+queue_resize
+queue_push :: proc{
+	queue_push_back, 
+	queue_push_elems,
+};
+queue_push_front
+queue_pop_front
+queue_pop_back
+queue_consume
+*/
+
+queue_init_none :: proc(q: ^$Q/Queue($T), allocator := context.allocator) {
+	queue_init_len(q, 0, allocator);
+}
+queue_init_len :: proc(q: ^$Q/Queue($T), len: int, allocator := context.allocator) {
+	queue_init_len_cap(q, 0, 16, allocator);
+}
+queue_init_len_cap :: proc(q: ^$Q/Queue($T), len: int, cap: int, allocator := context.allocator) {
+	array_init(&q.data, len, cap, allocator);
+	q.len = len;
+	q.offset = 0;
+}
+
+queue_init :: proc{queue_init_none, queue_init_len, queue_init_len_cap};
+
+queue_delete :: proc(q: $Q/Queue($T)) {
+	array_delete(q.data);
+}
+
+queue_clear :: proc(q: ^$Q/Queue($T)) {
+	q.len = 0;
+}
+
+queue_len :: proc(q: $Q/Queue($T)) -> int {
+	return q.len;
+}
+
+queue_cap :: proc(q: $Q/Queue($T)) -> int {
+	return array_cap(q.data);
+}
+
+queue_space :: proc(q: $Q/Queue($T)) -> int {
+	return array_len(q.data) - q.len;
+}
+
+queue_get :: proc(q: $Q/Queue($T), index: int) -> T {
+	i := (index + q.offset) % array_len(q.data);
+	data := array_slice(q.data);
+	return data[i];
+}
+
+queue_set :: proc(q: ^$Q/Queue($T), index: int, item: T)  {
+	i := (index + q.offset) % array_len(q.data);
+	data := array_slice(q.data);
+	data[i] = item;
+}
+
+
+queue_reserve :: proc(q: ^$Q/Queue($T), capacity: int) {
+	if capacity > q.len {
+		_queue_increase_capacity(q, capacity);
+	}
+}
+
+queue_resize :: proc(q: ^$Q/Queue($T), length: int) {
+	if length > q.len {
+		_queue_increase_capacity(q, length);
+	}
+	q.len = length;
+}
+
+queue_push_back :: proc(q: ^$Q/Queue($T), item: T) {
+	if queue_space(q^) == 0 {
+		_queue_grow(q);
+	}
+
+	queue_set(q, q.len, item);
+	q.len += 1;
+}
+
+queue_push_front :: proc(q: ^$Q/Queue($T), item: T) {
+	if queue_space(q^) == 0 {
+		_queue_grow(q);
+	}
+
+	q.offset = (q.offset - 1 + array_len(q.data)) % array_len(q.data);
+	q.len += 1;
+	queue_set(q, 0, item);
+}
+
+queue_pop_front :: proc(q: ^$Q/Queue($T)) -> T {
+	assert(q.len > 0);
+	item := queue_get(q^, 0);
+	q.offset = (q.offset + 1) % array_len(q.data);
+	q.len -= 1;
+	if q.len == 0 {
+		q.offset = 0;
+	}
+	return item;
+}
+
+queue_pop_back :: proc(q: ^$Q/Queue($T)) -> T {
+	assert(q.len > 0);
+	item := queue_get(q^, q.len-1);
+	q.len -= 1;
+	return item;
+}
+
+queue_consume :: proc(q: ^$Q/Queue($T), count: int) {
+	q.offset = (q.offset + count) & array_len(q.data);
+	q.len -= count;
+}
+
+
+queue_push_elems :: proc(q: ^$Q/Queue($T), items: ..T) {
+	if queue_space(q^) < len(items) {
+		_queue_grow(q, q.len + len(items));
+	}
+	size := array_len(q.data);
+	insert := (q.offset + q.len) % size;
+
+	to_insert := len(items);
+	if insert + to_insert > size {
+		to_insert = size - insert;
+	}
+
+	the_items := items[:];
+
+	data := array_slice(q.data);
+
+	q.len += copy(data[insert:][:to_insert], the_items);
+	the_items = the_items[to_insert:];
+	q.len += copy(data[:], the_items);
+}
+
+queue_push :: proc{queue_push_back, queue_push_elems};
+
+
+
+_queue_increase_capacity :: proc(q: ^$Q/Queue($T), new_capacity: int) {
+	end := array_len(q.data);
+	array_resize(&q.data, new_capacity);
+	if q.offset + q.len > end {
+		end_items := q.len + end;
+		data := array_slice(q.data);
+		copy(data[new_capacity-end_items:][:end_items], data[q.offset:][:end_items]);
+		q.offset += new_capacity - end;
+	}
+}
+_queue_grow :: proc(q: ^$Q/Queue($T), min_capacity: int = 0) {
+	new_capacity := max(array_len(q.data)*2 + 8, min_capacity);
+	_queue_increase_capacity(q, new_capacity);
+}

core/container/ring.odin

@@ -0,0 +1,73 @@
+package container
+
+
+Ring :: struct($T: typeid) {
+	next, prev: ^Ring(T),
+	value: T,
+}
+
+ring_init :: proc(r: ^$R/Ring) -> ^R {
+	r.prev, r.next = r, r;
+	return r;
+}
+
+ring_next :: proc(r: ^$R/Ring) -> ^R {
+	if r.next == nil {
+		return ring_init(r);
+	}
+	return r.next;
+}
+ring_prev :: proc(r: ^$R/Ring) -> ^R {
+	if r.prev == nil {
+		return ring_init(r);
+	}
+	return r.prev;
+}
+
+
+ring_move :: proc(r: ^$R/Ring, n: int) -> ^R {
+	if r.next == nil {
+		return ring_init(r);
+	}
+
+	switch {
+	case n < 0:
+		for _ in n..<0 {
+			r = r.prev;
+		}
+	case n > 0:
+		for _ in 0..<n {
+			r = r.next;
+		}
+	}
+	return r;
+}
+
+ring_link :: proc(r, s: ^$R/Ring) -> ^R {
+	n := ring_next(r);
+	if s != nil {
+		p := ring_prev(s);
+		r.next = s;
+		s.prev = r;
+		n.prev = p;
+		p.next = n;
+	}
+	return n;
+}
+ring_unlink :: proc(r: ^$R/Ring, n: int) -> ^R {
+	if n <= 0 {
+		return nil;
+	}
+	return ring_link(r, ring_move(r, n+1));
+}
+ring_len :: proc(r: ^$R/Ring) -> int {
+	n := 0;
+	if r != nil {
+		n = 1;
+		for p := ring_next(&p); p != r; p = p.next {
+			n += 1;
+		}
+	}
+	return n;
+}
+

core/container/set.odin

@@ -0,0 +1,240 @@
+package container
+
+Set :: struct {
+	hash:    Array(int),
+	entries: Array(Set_Entry),
+}
+
+Set_Entry :: struct {
+	key:   u64,
+	next:  int,
+}
+
+
+/*
+set_init :: proc{
+	set_init_none,
+	set_init_cap,
+}
+set_delete
+
+set_in
+set_not_in
+set_add
+set_remove
+set_reserve
+set_clear
+*/
+
+set_init :: proc{set_init_none, set_init_cap};
+
+set_init_none :: proc(m: ^Set, allocator := context.allocator) {
+	m.hash.allocator = allocator;
+	m.entries.allocator = allocator;
+}
+
+set_init_cap :: proc(m: ^Set, cap: int, allocator := context.allocator) {
+	m.hash.allocator = allocator;
+	m.entries.allocator = allocator;
+	set_reserve(m, cap);
+}
+
+set_delete :: proc(m: Set) {
+	array_delete(m.hash);
+	array_delete(m.entries);
+}
+
+
+set_in :: proc(m: Set, key: u64) -> bool {
+	return _set_find_or_fail(m, key) >= 0;
+}
+set_not_in :: proc(m: Set, key: u64) -> bool {
+	return _set_find_or_fail(m, key) < 0;
+}
+
+set_add :: proc(m: ^Set, key: u64) {
+	if array_len(m.hash) == 0 {
+		_set_grow(m);
+	}
+
+	_ = _set_find_or_make(m, key);
+	if _set_full(m^) {
+		_set_grow(m);
+	}
+}
+
+set_remove :: proc(m: ^Set, key: u64) {
+	fr := _set_find_key(m^, key);
+	if fr.entry_index >= 0 {
+		_set_erase(m, fr);
+	}
+}
+
+
+set_reserve :: proc(m: ^Set, new_size: int) {
+	nm: Set;
+	set_init(&nm, m.hash.allocator);
+	array_resize(&nm.hash, new_size);
+	array_reserve(&nm.entries, array_len(m.entries));
+
+	for i in 0..<new_size {
+		array_set(&nm.hash, i, -1);
+	}
+	for i in 0..<array_len(m.entries) {
+		e := array_get(m.entries, i);
+		set_add(&nm, e.key);
+	}
+
+	set_delete(m^);
+	m^ = nm;
+}
+
+set_clear :: proc(m: ^Set) {
+	array_clear(&m.hash);
+	array_clear(&m.entries);
+}
+
+
+set_equal :: proc(a, b: Set) -> bool {
+	a_entries := array_slice(a.entries);
+	b_entries := array_slice(b.entries);
+	if len(a_entries) != len(b_entries) {
+		return false;
+	}
+	for e in a_entries {
+		if set_not_in(b, e.key) {
+			return false;
+		}
+	}
+
+	return true;
+}
+
+
+
+/// Internal
+
+_set_add_entry :: proc(m: ^Set, key: u64) -> int {
+	e: Set_Entry;
+	e.key = key;
+	e.next = -1;
+	idx := array_len(m.entries);
+	array_push(&m.entries, e);
+	return idx;
+}
+
+_set_erase :: proc(m: ^Set, fr: Map_Find_Result) {
+	if fr.entry_prev < 0 {
+		array_set(&m.hash, fr.hash_index, array_get(m.entries, fr.entry_index).next);
+	} else {
+		array_get_ptr(m.entries, fr.entry_prev).next = array_get(m.entries, fr.entry_index).next;
+	}
+
+	if fr.entry_index == array_len(m.entries)-1 {
+		array_pop_back(&m.entries);
+		return;
+	}
+
+	array_set(&m.entries, fr.entry_index, array_get(m.entries, array_len(m.entries)-1));
+	last := _set_find_key(m^, array_get(m.entries, fr.entry_index).key);
+
+	if last.entry_prev < 0 {
+		array_get_ptr(m.entries, last.entry_prev).next = fr.entry_index;
+	} else {
+		array_set(&m.hash, last.hash_index, fr.entry_index);
+	}
+}
+
+
+_set_find_key :: proc(m: Set, key: u64) -> Map_Find_Result {
+	fr: Map_Find_Result;
+	fr.hash_index = -1;
+	fr.entry_prev = -1;
+	fr.entry_index = -1;
+
+	if array_len(m.hash) == 0 {
+		return fr;
+	}
+
+	fr.hash_index = int(key % u64(array_len(m.hash)));
+	fr.entry_index = array_get(m.hash, fr.hash_index);
+	for fr.entry_index >= 0 {
+		it := array_get_ptr(m.entries, fr.entry_index);
+		if it.key == key {
+			return fr;
+		}
+		fr.entry_prev = fr.entry_index;
+		fr.entry_index = it.next;
+	}
+	return fr;
+}
+
+_set_find_entry :: proc(m: ^Set, e: ^Set_Entry) -> Map_Find_Result {
+	fr: Map_Find_Result;
+	fr.hash_index = -1;
+	fr.entry_prev = -1;
+	fr.entry_index = -1;
+
+	if array_len(m.hash) == 0 {
+		return fr;
+	}
+
+	fr.hash_index = int(e.key % u64(array_len(m.hash)));
+	fr.entry_index = array_get(m.hash, fr.hash_index);
+	for fr.entry_index >= 0 {
+		it := array_get_ptr(m.entries, fr.entry_index);
+		if it == e {
+			return fr;
+		}
+		fr.entry_prev = fr.entry_index;
+		fr.entry_index = it.next;
+	}
+	return fr;
+}
+
+_set_find_or_fail :: proc(m: Set, key: u64) -> int {
+	return _set_find_key(m, key).entry_index;
+}
+_set_find_or_make :: proc(m: ^Set, key: u64) -> int {
+	fr := _set_find_key(m^, key);
+	if fr.entry_index >= 0 {
+		return fr.entry_index;
+	}
+
+	i := _set_add_entry(m, key);
+	if fr.entry_prev < 0 {
+		array_set(&m.hash, fr.hash_index, i);
+	} else {
+		array_get_ptr(m.entries, fr.entry_prev).next = i;
+	}
+	return i;
+}
+
+
+_set_make :: proc(m: ^Set, key: u64) -> int {
+	fr := _set_find_key(m^, key);
+	i := _set_add_entry(m, key);
+
+	if fr.entry_prev < 0 {
+		array_set(&m.hash, fr.hash_index, i);
+	} else {
+		array_get_ptr(m.entries, fr.entry_prev).next = i;
+	}
+
+	array_get_ptr(m.entries, i).next = fr.entry_index;
+
+	return i;
+}
+
+
+_set_full :: proc(m: Set) -> bool {
+	// TODO(bill): Determine good max load factor
+	return array_len(m.entries) >= (array_len(m.hash) / 4)*3;
+}
+
+_set_grow :: proc(m: ^Set) {
+	new_size := array_len(m.entries) * 4 + 7; // TODO(bill): Determine good grow rate
+	set_reserve(m, new_size);
+}
+
+

core/container/small_array.odin

@@ -0,0 +1,95 @@
+package container
+
+Small_Array :: struct($N: int, $T: typeid) where N >= 0 {
+	data: [N]T,
+	len:  int,
+}
+
+
+small_array_len :: proc(a: $A/Small_Array) -> int {
+	return a.len;
+}
+
+small_array_cap :: proc(a: $A/Small_Array) -> int {
+	return len(a.data);
+}
+
+small_array_space :: proc(a: $A/Small_Array) -> int {
+	return len(a.data) - a.len;
+}
+
+small_array_slice :: proc(a: ^$A/Small_Array($N, $T)) -> []T {
+	return a.data[:a.len];
+}
+
+
+small_array_get :: proc(a: $A/Small_Array($N, $T), index: int, loc := #caller_location) -> T {
+	return a.data[index];
+}
+small_array_get_ptr :: proc(a: $A/Small_Array($N, $T), index: int, loc := #caller_location) -> ^T {
+	return &a.data[index];
+}
+
+small_array_set :: proc(a: ^$A/Small_Array($N, $T), index: int, item: T, loc := #caller_location) {
+	a.data[index] = item;
+}
+
+small_array_resize :: proc(a: ^$A/Small_Array, length: int) {
+	a.len = min(length, len(a.data));
+}
+
+
+small_array_push_back :: proc(a: ^$A/Small_Array($N, $T), item: T) -> bool {
+	if a.len < len(a.data) {
+		a.len += 1;
+		a.data[a.len-1] = item;
+		return true;
+	}
+	return false;
+}
+
+small_array_push_front :: proc(a: ^$A/Small_Array($N, $T), item: T) -> bool {
+	if a.len < len(a.data) {
+		a.len += 1;
+		data := small_array_slice(a);
+		copy(data[1:], data[:]);
+		data[0] = item;
+		return true;
+	}
+	return false;
+}
+
+small_array_pop_back :: proc(a: ^$A/Small_Array($N, $T), loc := #caller_location) -> T {
+	assert(condition=a.len > 0, loc=loc);
+	item := a.data[a.len-1];
+	a.len -= 1;
+	return item;
+}
+
+small_array_pop_front :: proc(a: ^$A/Small_Array($N, $T), loc := #caller_location) -> T {
+	assert(condition=a.len > 0, loc=loc);
+	item := a.data[0];
+	s := small_array_slice(a);
+	copy(s[:], s[1:]);
+	a.len -= 1;
+	return item;
+}
+
+
+small_array_consume :: proc(a: ^$A/Small_Array($N, $T), count: int, loc := #caller_location) {
+	assert(condition=a.len >= count, loc=loc);
+	a.len -= count;
+}
+
+small_array_clear :: proc(a: ^$A/Small_Array($N, $T)) {
+	small_array_resize(a, 0);
+}
+
+small_array_push_back_elems :: proc(a: ^$A/Small_Array($N, $T), items: ..T) {
+	n := copy(a.data[a.len:], items[:]);
+	a.len += n;
+}
+
+small_array_push   :: proc{small_array_push_back, small_array_push_back_elems};
+small_array_append :: proc{small_array_push_back, small_array_push_back_elems};
+

core/dynlib/lib.odin

@@ -0,0 +1,3 @@
+package dynlib
+
+Library :: distinct rawptr;

core/dynlib/lib_unix.odin

@@ -0,0 +1,23 @@
+// +build linux, darwin, freebsd
+package dynlib
+
+import "core:os"
+
+load_library :: proc(path: string, global_symbols := false) -> (Library, bool) {
+    flags := os.RTLD_NOW;
+    if global_symbols {
+    	flags |= os.RTLD_GLOBAL;
+    }
+    lib := os.dlopen(path, flags);
+    return Library(lib), lib != nil;
+}
+
+unload_library :: proc(library: Library) {
+    os.dlclose(rawptr(library));
+}
+
+symbol_address :: proc(library: Library, symbol: string) -> (ptr: rawptr, found: bool) {
+    ptr = os.dlsym(rawptr(library), symbol);
+    found = ptr != nil;
+    return;
+}

core/dynlib/lib_windows.odin

@@ -0,0 +1,25 @@
+// +build windows
+package dynlib
+
+import win32 "core:sys/windows"
+import "core:strings"
+
+load_library :: proc(path: string, global_symbols := false) -> (Library, bool) {
+	// NOTE(bill): 'global_symbols' is here only for consistency with POSIX which has RTLD_GLOBAL
+
+	wide_path := win32.utf8_to_wstring(path, context.temp_allocator);
+	handle := cast(Library)win32.LoadLibraryW(wide_path);
+	return handle, handle != nil;
+}
+
+unload_library :: proc(library: Library) -> bool {
+	ok := win32.FreeLibrary(cast(win32.HMODULE)library);
+	return bool(ok);
+}
+
+symbol_address :: proc(library: Library, symbol: string) -> (ptr: rawptr, found: bool) {
+	c_str := strings.clone_to_cstring(symbol, context.temp_allocator);
+	ptr = win32.GetProcAddress(cast(win32.HMODULE)library, c_str);
+	found = ptr != nil;
+	return;
+}

core/encoding/base32/base32.odin

@@ -0,0 +1,148 @@
+package base32
+
+// @note(zh): Encoding utility for Base32
+// A secondary param can be used to supply a custom alphabet to
+// @link(encode) and a matching decoding table to @link(decode).
+// If none is supplied it just uses the standard Base32 alphabet.
+// Incase your specific version does not use padding, you may
+// truncate it from the encoded output.
+
+ENC_TABLE := [32]byte {
+    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
+    'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
+    'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
+    'Y', 'Z', '2', '3', '4', '5', '6', '7',
+};
+
+PADDING :: '=';
+
+DEC_TABLE := [?]u8 {
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0, 26, 27, 28, 29, 30, 31,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
+    15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,  0,  0,  0,  0,  0,
+     0,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
+    15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+};
+
+encode :: proc(data: []byte, ENC_TBL := ENC_TABLE, allocator := context.allocator) -> string {
+    out_length := (len(data) + 4) / 5 * 8;
+    out := make([]byte, out_length);
+    _encode(out, data);
+    return string(out);
+}
+
+@private
+_encode :: proc(out, data: []byte, ENC_TBL := ENC_TABLE, allocator := context.allocator) {
+    out := out;
+    data := data;
+
+    for len(data) > 0 {
+        carry: byte;
+        switch len(data) {
+            case:
+                out[7] = ENC_TABLE[data[4] & 0x1f];
+                carry = data[4] >> 5;
+                fallthrough;
+            case 4:
+                out[6] = ENC_TABLE[carry | (data[3] << 3) & 0x1f];
+                out[5] = ENC_TABLE[(data[3] >> 2) & 0x1f];
+                carry = data[3] >> 7;
+                fallthrough;
+            case 3:
+                out[4] = ENC_TABLE[carry | (data[2] << 1) & 0x1f];
+                carry = (data[2] >> 4) & 0x1f;
+                fallthrough;
+            case 2:
+                out[3] = ENC_TABLE[carry | (data[1] << 4) & 0x1f];
+                out[2] = ENC_TABLE[(data[1] >> 1) & 0x1f];
+                carry = (data[1] >> 6) & 0x1f;
+                fallthrough;
+            case 1:
+                out[1] = ENC_TABLE[carry | (data[0] << 2) & 0x1f];
+                out[0] = ENC_TABLE[data[0] >> 3];
+        }
+
+        if len(data) < 5 {
+            out[7] = byte(PADDING);
+            if len(data) < 4 {
+                out[6] = byte(PADDING);
+                out[5] = byte(PADDING);
+                if len(data) < 3 {
+                    out[4] = byte(PADDING);
+                    if len(data) < 2 {
+                        out[3] = byte(PADDING);
+                        out[2] = byte(PADDING);
+                    }
+                }
+            }
+            break;
+        }
+        data = data[5:];
+        out = out[8:];
+    }
+}
+
+decode :: proc(data: string, DEC_TBL := DEC_TABLE, allocator := context.allocator) -> []byte #no_bounds_check{
+    if len(data) == 0 {
+        return nil;
+    }
+
+    outi := 0;
+    data := data;
+
+    out := make([]byte, len(data) / 8 * 5, allocator);
+    end := false;
+    for len(data) > 0 && !end {
+        dbuf : [8]byte;
+        dlen := 8;
+
+        for j := 0; j < 8; {
+            if len(data) == 0 {
+                dlen, end = j, true;
+                break;
+            }
+            input := data[0];
+            data = data[1:];
+            if input == byte(PADDING) && j >= 2 && len(data) < 8 {
+                assert(!(len(data) + j < 8 - 1), "Corrupted input");
+                for k := 0; k < 8-1-j; k +=1 {
+                    assert(len(data) < k || data[k] == byte(PADDING), "Corrupted input");
+                }
+                dlen, end = j, true;
+                assert(dlen != 1 && dlen != 3 && dlen != 6, "Corrupted input");
+                break;
+            }
+            dbuf[j] = DEC_TABLE[input];
+            assert(dbuf[j] != 0xff, "Corrupted input");
+            j += 1;
+        }
+
+        switch dlen {
+            case 8:
+                out[outi + 4] = dbuf[6] << 5 | dbuf[7];
+                fallthrough;
+            case 7:
+                out[outi + 3] = dbuf[4] << 7 | dbuf[5] << 2 | dbuf[6] >> 3;
+                fallthrough;
+            case 5:
+                out[outi + 2] = dbuf[3] << 4 | dbuf[4] >> 1;
+                fallthrough;
+            case 4:
+                out[outi + 1] = dbuf[1] << 6 | dbuf[2] << 1 | dbuf[3] >> 4;
+                fallthrough;
+            case 2:
+                out[outi + 0] = dbuf[0] << 3 | dbuf[1] >> 2;
+        }
+        outi += 5;
+    }
+    return out;
+}

core/encoding/base64/base64.odin

@@ -0,0 +1,97 @@
+package base64
+
+// @note(zh): Encoding utility for Base64
+// A secondary param can be used to supply a custom alphabet to
+// @link(encode) and a matching decoding table to @link(decode).
+// If none is supplied it just uses the standard Base64 alphabet.
+// Incase your specific version does not use padding, you may
+// truncate it from the encoded output.
+
+ENC_TABLE := [64]byte {
+    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
+    'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
+    'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
+    'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
+    'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
+    'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
+    'w', 'x', 'y', 'z', '0', '1', '2', '3',
+    '4', '5', '6', '7', '8', '9', '+', '/',
+};
+
+PADDING :: '=';
+
+DEC_TABLE := [128]int {
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, 62, -1, -1, -1, 63,
+    52, 53, 54, 55, 56, 57, 58, 59,
+    60, 61, -1, -1, -1, -1, -1, -1,
+    -1,  0,  1,  2,  3,  4,  5,  6,
+     7,  8,  9, 10, 11, 12, 13, 14,
+    15, 16, 17, 18, 19, 20, 21, 22,
+    23, 24, 25, -1, -1, -1, -1, -1,
+    -1, 26, 27, 28, 29, 30, 31, 32,
+    33, 34, 35, 36, 37, 38, 39, 40,
+    41, 42, 43, 44, 45, 46, 47, 48,
+    49, 50, 51, -1, -1, -1, -1, -1,
+};
+
+encode :: proc(data: []byte, ENC_TBL := ENC_TABLE, allocator := context.allocator) -> string #no_bounds_check {
+    length := len(data);
+    if length == 0 {
+        return "";
+    }
+
+    out_length := ((4 * length / 3) + 3) &~ 3;
+    out := make([]byte, out_length, allocator);
+
+    c0, c1, c2, block: int;
+
+    for i, d := 0, 0; i < length; i, d = i + 3, d + 4 {
+        c0, c1, c2 = int(data[i]), -1, -1;
+
+        if i + 1 < length { c1 = int(data[i + 1]); }
+        if i + 2 < length { c2 = int(data[i + 2]); }
+
+        block = (c0 << 16) | (max(c1, 0) << 8) | max(c2, 0);
+
+        out[d]     = ENC_TBL[block >> 18 & 63];
+        out[d + 1] = ENC_TBL[block >> 12 & 63];
+        out[d + 2] = c1 == -1 ? PADDING : ENC_TBL[block >> 6 & 63];
+        out[d + 3] = c2 == -1 ? PADDING : ENC_TBL[block & 63];
+    }
+    return string(out);
+}
+
+decode :: proc(data: string, DEC_TBL := DEC_TABLE, allocator := context.allocator) -> []byte #no_bounds_check {
+    length := len(data);
+    if length == 0 {
+        return nil;
+    }
+
+    pad_count := data[length - 1] == PADDING ? (data[length - 2] == PADDING ? 2 : 1) : 0;
+    out_length := ((length * 6) >> 3) - pad_count;
+    out := make([]byte, out_length, allocator);
+
+    c0, c1, c2, c3: int;
+    b0, b1, b2: int;
+
+    for i, j := 0, 0; i < length; i, j = i + 4, j + 3 {
+        c0 = DEC_TBL[data[i]];
+        c1 = DEC_TBL[data[i + 1]];
+        c2 = DEC_TBL[data[i + 2]];
+        c3 = DEC_TBL[data[i + 3]];
+
+        b0 = (c0 << 2) | (c1 >> 4);
+        b1 = (c1 << 4) | (c2 >> 2);
+        b2 = (c2 << 6) | c3;
+
+        out[j]     = byte(b0);
+        out[j + 1] = byte(b1);
+        out[j + 2] = byte(b2);
+    }
+    return out;
+}

core/encoding/cel/cel.odin

@@ -0,0 +1,852 @@
+package cel;
+
+import "core:fmt"
+import "core:strconv"
+import "core:unicode/utf8"
+import "core:strings"
+
+Array :: []Value;
+Dict  :: map[string]Value;
+Nil_Value :: struct{};
+
+Value :: union {
+	Nil_Value,
+	bool, i64, f64, string,
+	Array, Dict,
+}
+
+Parser :: struct {
+	tokens:           [dynamic]Token,
+	prev_token:       Token,
+	curr_token:       Token,
+	curr_token_index: int,
+
+	allocated_strings: [dynamic]string,
+
+	error_count: int,
+
+	root: Dict,
+	dict_stack: [dynamic]^Dict, // NOTE: Pointers may be stored on the stack
+}
+
+
+print_value :: proc(value: Value, pretty := true, indent := 0) {
+	print_indent :: proc(indent: int) {
+		for _ in 0..<indent {
+			fmt.print("\t");
+		}
+	}
+
+	switch v in value {
+	case bool: fmt.print(v);
+	case i64: fmt.print(v);
+	case f64: fmt.print(v);
+	case string: fmt.print(v);
+	case Array:
+		fmt.print("[");
+		if pretty { fmt.println(); }
+		for e, i in v {
+			if pretty {
+				print_indent(indent+1);
+				print_value(e, pretty, indent+1);
+				fmt.println(",");
+			} else {
+				if i > 0 { fmt.print(", "); }
+				print_value(e);
+			}
+		}
+		if pretty { print_indent(indent); }
+		fmt.print("]");
+	case Dict:
+		fmt.print("{");
+		if pretty { fmt.println(); }
+
+		i := 0;
+		for name, val in v {
+			if pretty {
+				print_indent(indent+1);
+				fmt.printf("%s = ", name);
+				print_value(val, pretty, indent+1);
+				fmt.println(",");
+			} else {
+				if i > 0 { fmt.print(", "); }
+				fmt.printf("%s = ", name);
+				print_value(val, pretty, indent+1);
+				i += 1;
+			}
+		}
+
+		if pretty { print_indent(indent); }
+		fmt.print("}");
+	case:
+		fmt.print("nil");
+	case Nil_Value:
+		fmt.print("nil");
+	}
+}
+print :: proc(p: ^Parser, pretty := false) {
+	for name, val in p.root {
+		fmt.printf("%s = ", name);
+		print_value(val, pretty);
+		fmt.println(";");
+	}
+}
+
+create_from_string :: proc(src: string) -> (^Parser, bool) {
+	return init(transmute([]byte)src);
+}
+
+
+init :: proc(src: []byte) -> (^Parser, bool) {
+	t: Tokenizer;
+	tokenizer_init(&t, src);
+	return create_from_tokenizer(&t);
+}
+
+
+create_from_tokenizer :: proc(t: ^Tokenizer) -> (^Parser, bool) {
+	p := new(Parser);
+	for {
+		tok := scan(t);
+		if tok.kind == .Illegal {
+			return p, false;
+		}
+		append(&p.tokens, tok);
+		if tok.kind == .EOF {
+			break;
+		}
+	}
+
+	if t.error_count > 0 {
+		return p, false;
+	}
+
+	if len(p.tokens) == 0 {
+		tok := Token{kind = .EOF};
+		tok.line, tok.column = 1, 1;
+		append(&p.tokens, tok);
+		return p, true;
+	}
+
+	p.curr_token_index = 0;
+	p.prev_token = p.tokens[p.curr_token_index];
+	p.curr_token = p.tokens[p.curr_token_index];
+
+	p.root = Dict{};
+	p.dict_stack = make([dynamic]^Dict, 0, 4);
+	append(&p.dict_stack, &p.root);
+
+	for p.curr_token.kind != .EOF &&
+	    p.curr_token.kind != .Illegal &&
+	    p.curr_token_index < len(p.tokens) {
+		if !parse_assignment(p) {
+			break;
+		}
+	}
+
+	return p, true;
+}
+
+destroy :: proc(p: ^Parser) {
+	destroy_value :: proc(value: Value) {
+		#partial switch v in value {
+		case Array:
+			for elem in v {
+				destroy_value(elem);
+			}
+			delete(v);
+
+		case Dict:
+			for _, dv in v {
+				destroy_value(dv);
+			}
+			delete(v);
+		}
+	}
+
+	delete(p.tokens);
+	for s in p.allocated_strings {
+		delete(s);
+	}
+	delete(p.allocated_strings);
+	delete(p.dict_stack);
+
+	destroy_value(p.root);
+	free(p);
+}
+
+error :: proc(p: ^Parser, pos: Pos, msg: string, args: ..any) {
+	fmt.eprintf("%s(%d:%d) Error: ", pos.file, pos.line, pos.column);
+	fmt.eprintf(msg, ..args);
+	fmt.eprintln();
+
+	p.error_count += 1;
+}
+
+next_token :: proc(p: ^Parser) -> Token {
+	p.prev_token = p.curr_token;
+	prev := p.prev_token;
+
+	if p.curr_token_index+1 < len(p.tokens) {
+		p.curr_token_index += 1;
+		p.curr_token = p.tokens[p.curr_token_index];
+		return prev;
+	}
+	p.curr_token_index = len(p.tokens);
+	p.curr_token = p.tokens[p.curr_token_index-1];
+	error(p, prev.pos, "Token is EOF");
+	return prev;
+}
+
+unquote_char :: proc(str: string, quote: byte) -> (r: rune, multiple_bytes: bool, tail_string: string, success: bool) {
+	hex_to_int :: proc(c: byte) -> int {
+		switch c {
+		case '0'..='9': return int(c-'0');
+		case 'a'..='f': return int(c-'a')+10;
+		case 'A'..='F': return int(c-'A')+10;
+		}
+		return -1;
+	}
+	w: int;
+
+	if str[0] == quote && quote == '"' {
+		return;
+	} else if str[0] >= 0x80 {
+		r, w = utf8.decode_rune_in_string(str);
+		return r, true, str[w:], true;
+	} else if str[0] != '\\' {
+		return rune(str[0]), false, str[1:], true;
+	}
+
+	if len(str) <= 1 {
+		return;
+	}
+	s := str;
+	c := s[1];
+	s = s[2:];
+
+	switch c {
+	case:
+		return;
+
+	case 'a':  r = '\a';
+	case 'b':  r = '\b';
+	case 'f':  r = '\f';
+	case 'n':  r = '\n';
+	case 'r':  r = '\r';
+	case 't':  r = '\t';
+	case 'v':  r = '\v';
+	case '\\': r = '\\';
+
+	case '"':  r = '"';
+	case '\'': r = '\'';
+
+	case '0'..='7':
+		v := int(c-'0');
+		if len(s) < 2 {
+			return;
+		}
+		for i in 0..<len(s) {
+			d := int(s[i]-'0');
+			if d < 0 || d > 7 {
+				return;
+			}
+			v = (v<<3) | d;
+		}
+		s = s[2:];
+		if v > 0xff {
+			return;
+		}
+		r = rune(v);
+
+	case 'x', 'u', 'U':
+		count: int;
+		switch c {
+		case 'x': count = 2;
+		case 'u': count = 4;
+		case 'U': count = 8;
+		}
+
+		if len(s) < count {
+			return;
+		}
+
+		for i in 0..<count {
+			d := hex_to_int(s[i]);
+			if d < 0 {
+				return;
+			}
+			r = (r<<4) | rune(d);
+		}
+		s = s[count:];
+		if c == 'x' {
+			break;
+		}
+		if r > utf8.MAX_RUNE {
+			return;
+		}
+		multiple_bytes = true;
+	}
+
+	success = true;
+	tail_string = s;
+	return;
+}
+
+
+unquote_string :: proc(p: ^Parser, t: Token) -> (string, bool) {
+	if t.kind != .String {
+		return t.lit, true;
+	}
+	s := t.lit;
+	quote := '"';
+
+	if s == `""` {
+        return "", true;
+    }
+
+	if strings.contains_rune(s, '\n') >= 0 {
+		return s, false;
+	}
+
+	if strings.contains_rune(s, '\\') < 0 && strings.contains_rune(s, quote) < 0 {
+		if quote == '"' {
+			return s, true;
+		}
+	}
+
+
+	buf_len := 3*len(s) / 2;
+	buf := make([]byte, buf_len);
+	offset := 0;
+	for len(s) > 0 {
+		r, multiple_bytes, tail_string, ok := unquote_char(s, byte(quote));
+		if !ok {
+			delete(buf);
+			return s, false;
+		}
+		s = tail_string;
+		if r < 0x80 || !multiple_bytes {
+			buf[offset] = byte(r);
+			offset += 1;
+		} else {
+			b, w := utf8.encode_rune(r);
+			copy(buf[offset:], b[:w]);
+			offset += w;
+		}
+	}
+
+	new_string := string(buf[:offset]);
+
+	append(&p.allocated_strings, new_string);
+
+	return new_string, true;
+}
+
+
+allow_token :: proc(p: ^Parser, kind: Kind) -> bool {
+	if p.curr_token.kind == kind {
+		next_token(p);
+		return true;
+	}
+	return false;
+}
+
+expect_token :: proc(p: ^Parser, kind: Kind) -> Token {
+	prev := p.curr_token;
+	if prev.kind != kind {
+		got := prev.lit;
+		if got == "\n" {
+			got = ";";
+		}
+		error(p, prev.pos, "Expected %s, got %s", kind_to_string[kind], got);
+	}
+	next_token(p);
+	return prev;
+}
+
+expect_operator :: proc(p: ^Parser) -> Token {
+	prev := p.curr_token;
+	if !is_operator(prev.kind) {
+		error(p, prev.pos, "Expected an operator, got %s", prev.lit);
+	}
+
+
+	next_token(p);
+	return prev;
+}
+
+fix_advance :: proc(p: ^Parser) {
+	for {
+		#partial switch t := p.curr_token; t.kind {
+		case .EOF, .Semicolon:
+			return;
+		}
+		next_token(p);
+	}
+}
+
+copy_value :: proc(value: Value) -> Value {
+	#partial switch v in value {
+	case Array:
+		a := make(Array, len(v));
+		for elem, idx in v {
+			a[idx] = copy_value(elem);
+		}
+		return a;
+	case Dict:
+		d := make(Dict, cap(v));
+		for key, val in v {
+			d[key] = copy_value(val);
+		}
+		return d;
+	}
+	return value;
+}
+
+lookup_value :: proc(p: ^Parser, name: string) -> (Value, bool) {
+	for i := len(p.dict_stack)-1; i >= 0; i -= 1 {
+		d := p.dict_stack[i];
+		if val, ok := d[name]; ok {
+			return copy_value(val), true;
+		}
+	}
+
+	return nil, false;
+}
+
+parse_operand :: proc(p: ^Parser) -> (Value, Pos) {
+	tok := p.curr_token;
+	#partial switch p.curr_token.kind {
+	case .Ident:
+		next_token(p);
+		v, ok := lookup_value(p, tok.lit);
+		if !ok { error(p, tok.pos, "Undeclared identifier %s", tok.lit); }
+		return v, tok.pos;
+
+	case .True:
+		next_token(p);
+		return true, tok.pos;
+	case .False:
+		next_token(p);
+		return false, tok.pos;
+
+	case .Nil:
+		next_token(p);
+		return Nil_Value{}, tok.pos;
+
+	case .Integer:
+		next_token(p);
+		i, _ := strconv.parse_i64(tok.lit);
+		return i, tok.pos;
+
+	case .Float:
+		next_token(p);
+		f, _ := strconv.parse_f64(tok.lit);
+		return f, tok.pos;
+
+	case .String:
+		next_token(p);
+		str, ok := unquote_string(p, tok);
+		if !ok { error(p, tok.pos, "Unable to unquote string"); }
+		return string(str), tok.pos;
+
+	case .Open_Paren:
+		expect_token(p, .Open_Paren);
+		expr, _ := parse_expr(p);
+		expect_token(p, .Close_Paren);
+		return expr, tok.pos;
+
+	case .Open_Bracket:
+		expect_token(p, .Open_Bracket);
+		elems := make([dynamic]Value, 0, 4);
+		for p.curr_token.kind != .Close_Bracket &&
+		    p.curr_token.kind != .EOF {
+			elem, _ := parse_expr(p);
+			append(&elems, elem);
+
+			if p.curr_token.kind == .Semicolon && p.curr_token.lit == "\n" {
+				next_token(p);
+			} else if !allow_token(p, .Comma) {
+				break;
+			}
+
+		}
+		expect_token(p, .Close_Bracket);
+		return Array(elems[:]), tok.pos;
+
+	case .Open_Brace:
+		expect_token(p, .Open_Brace);
+
+    	dict := Dict{};
+    	append(&p.dict_stack, &dict);
+    	defer pop(&p.dict_stack);
+
+		for p.curr_token.kind != .Close_Brace &&
+		    p.curr_token.kind != .EOF {
+		    name_tok := p.curr_token;
+		    if !allow_token(p, .Ident) && !allow_token(p, .String) {
+		    	name_tok = expect_token(p, .Ident);
+		    }
+
+			name, ok := unquote_string(p, name_tok);
+			if !ok { error(p, tok.pos, "Unable to unquote string"); }
+		    expect_token(p, .Assign);
+			elem, _ := parse_expr(p);
+
+			if _, ok2 := dict[name]; ok2 {
+				error(p, name_tok.pos, "Previous declaration of %s in this scope", name);
+			} else {
+				dict[name] = elem;
+			}
+
+			if p.curr_token.kind == .Semicolon && p.curr_token.lit == "\n" {
+				next_token(p);
+			} else if !allow_token(p, .Comma) {
+				break;
+			}
+		}
+		expect_token(p, .Close_Brace);
+		return dict, tok.pos;
+
+	}
+	return nil, tok.pos;
+}
+
+parse_atom_expr :: proc(p: ^Parser, operand: Value, pos: Pos) -> (Value, Pos) {
+	loop := true;
+	for operand := operand; loop;  {
+		#partial switch p.curr_token.kind {
+		case .Period:
+			next_token(p);
+			tok := next_token(p);
+
+			#partial switch tok.kind {
+			case .Ident:
+				d, ok := operand.(Dict);
+				if !ok || d == nil {
+					error(p, tok.pos, "Expected a dictionary");
+					operand = nil;
+					continue;
+				}
+				name, usok := unquote_string(p, tok);
+				if !usok { error(p, tok.pos, "Unable to unquote string"); }
+				val, found := d[name];
+				if !found {
+					error(p, tok.pos, "Field %s not found in dictionary", name);
+					operand = nil;
+					continue;
+				}
+				operand = val;
+			case:
+				error(p, tok.pos, "Expected a selector, got %s", tok.kind);
+				operand = nil;
+			}
+
+		case .Open_Bracket:
+			expect_token(p, .Open_Bracket);
+			index, index_pos := parse_expr(p);
+			expect_token(p, .Close_Bracket);
+
+
+			#partial switch a in operand {
+			case Array:
+				i, ok := index.(i64);
+				if !ok {
+					error(p, index_pos, "Index must be an integer for an array");
+					operand = nil;
+					continue;
+				}
+
+				if 0 <= i && i < i64(len(a)) {
+					operand = a[i];
+				} else {
+					error(p, index_pos, "Index %d out of bounds range 0..%d", i, len(a));
+					operand = nil;
+					continue;
+				}
+
+			case Dict:
+				key, ok := index.(string);
+				if !ok {
+					error(p, index_pos, "Index must be a string for a dictionary");
+					operand = nil;
+					continue;
+				}
+
+				val, found := a[key];
+				if found {
+					operand = val;
+				} else {
+					error(p, index_pos, "`%s` was not found in the dictionary", key);
+					operand = nil;
+					continue;
+				}
+
+
+
+			case:
+				error(p, index_pos, "Indexing is only allowed on an array or dictionary");
+			}
+
+		case:
+			loop = false;
+		}
+	}
+
+	return operand, pos;
+}
+
+parse_unary_expr :: proc(p: ^Parser) -> (Value, Pos) {
+	op := p.curr_token;
+	#partial switch p.curr_token.kind {
+	case .At:
+		next_token(p);
+		tok := expect_token(p, .String);
+		v, ok := lookup_value(p, tok.lit);
+		if !ok { error(p, tok.pos, "Undeclared identifier %s", tok.lit); }
+		return parse_atom_expr(p, v, tok.pos);
+
+	case .Add, .Sub:
+		next_token(p);
+		// TODO(bill): Calcuate values as you go!
+		expr, pos := parse_unary_expr(p);
+
+		#partial switch e in expr {
+		case i64: if op.kind == .Sub { return -e, pos; }
+		case f64: if op.kind == .Sub { return -e, pos; }
+		case:
+			error(p, op.pos, "Unary operator %s can only be used on integers or floats", op.lit);
+			return nil, op.pos;
+		}
+
+		return expr, op.pos;
+
+	case .Not:
+		next_token(p);
+		expr, _ := parse_unary_expr(p);
+		if v, ok := expr.(bool); ok {
+			return !v, op.pos;
+		}
+		error(p, op.pos, "Unary operator %s can only be used on booleans", op.lit);
+		return nil, op.pos;
+	}
+
+	return parse_atom_expr(p, parse_operand(p));
+}
+
+
+value_order :: proc(v: Value) -> int {
+	#partial switch _ in v {
+	case bool, string:
+		return 1;
+	case i64:
+		return 2;
+	case f64:
+		return 3;
+	}
+	return 0;
+}
+
+match_values :: proc(left, right: ^Value) -> bool {
+	if value_order(right^) < value_order(left^) {
+		return match_values(right, left);
+	}
+
+	#partial switch x in left^ {
+	case:
+		right^ = left^;
+	case bool, string:
+		return true;
+	case i64:
+		#partial switch y in right^ {
+		case i64:
+			return true;
+		case f64:
+			left^ = f64(x);
+			return true;
+		}
+
+	case f64:
+		#partial switch y in right {
+		case f64:
+			return true;
+		}
+	}
+
+	return false;
+}
+
+calculate_binary_value :: proc(p: ^Parser, op: Kind, a_, b_: Value) -> (Value, bool) {
+	// TODO(bill): Calculate value as you go!
+	x, y := a_, b_;
+	match_values(&x, &y);
+
+
+	#partial switch a in x {
+	case: return x, true;
+
+	case bool:
+		b, ok := y.(bool);
+		if !ok { return nil, false; }
+		#partial switch op {
+		case .Eq:    return a == b, true;
+		case .NotEq: return a != b, true;
+		case .And:   return a && b, true;
+		case .Or:    return a || b, true;
+		}
+
+	case i64:
+		b, ok := y.(i64);
+		if !ok { return nil, false; }
+		#partial switch op {
+		case .Add:   return a + b, true;
+		case .Sub:   return a - b, true;
+		case .Mul:   return a * b, true;
+		case .Quo:   return a / b, true;
+		case .Rem:   return a % b, true;
+		case .Eq:    return a == b, true;
+		case .NotEq: return a != b, true;
+		case .Lt:    return a <  b, true;
+		case .Gt:    return a >  b, true;
+		case .LtEq:  return a <= b, true;
+		case .GtEq:  return a >= b, true;
+		}
+
+	case f64:
+		b, ok := y.(f64);
+		if !ok { return nil, false; }
+
+		#partial switch op {
+		case .Add:   return a + b, true;
+		case .Sub:   return a - b, true;
+		case .Mul:   return a * b, true;
+		case .Quo:   return a / b, true;
+		case .Eq:    return a == b, true;
+		case .NotEq: return a != b, true;
+		case .Lt:    return a <  b, true;
+		case .Gt:    return a >  b, true;
+		case .LtEq:  return a <= b, true;
+		case .GtEq:  return a >= b, true;
+		}
+
+	case string:
+		b, ok := y.(string);
+		if !ok { return nil, false; }
+
+		#partial switch op {
+		case .Add:
+			n := len(a) + len(b);
+			data := make([]byte, n);
+			copy(data[:], a);
+			copy(data[len(a):], b);
+			s := string(data);
+			append(&p.allocated_strings, s);
+			return s, true;
+
+		case .Eq:    return a == b, true;
+		case .NotEq: return a != b, true;
+		case .Lt:    return a <  b, true;
+		case .Gt:    return a >  b, true;
+		case .LtEq:  return a <= b, true;
+		case .GtEq:  return a >= b, true;
+		}
+	}
+
+	return nil, false;
+}
+
+parse_binary_expr :: proc(p: ^Parser, prec_in: int) -> (Value, Pos) {
+	expr, pos := parse_unary_expr(p);
+	for prec := precedence(p.curr_token.kind); prec >= prec_in; prec -= 1 {
+		for {
+			op := p.curr_token;
+			op_prec := precedence(op.kind);
+			if op_prec != prec {
+				break;
+			}
+			expect_operator(p);
+
+			if op.kind == .Question {
+				cond := expr;
+				x, _ := parse_expr(p);
+				expect_token(p, .Colon);
+				y, _ := parse_expr(p);
+
+				if t, ok := cond.(bool); ok {
+					expr = t ? x : y;
+				} else {
+					error(p, pos, "Condition must be a boolean");
+				}
+
+			} else {
+				right, right_pos := parse_binary_expr(p, prec+1);
+				if right == nil {
+					error(p, right_pos, "Expected expression on the right-hand side of the binary operator %s", op.lit);
+				}
+				left := expr;
+				ok: bool;
+				expr, ok = calculate_binary_value(p, op.kind, left, right);
+				if !ok {
+					error(p, pos, "Invalid binary operation");
+				}
+			}
+		}
+	}
+	return expr, pos;
+}
+
+parse_expr :: proc(p: ^Parser) -> (Value, Pos) {
+	return parse_binary_expr(p, 1);
+}
+
+expect_semicolon :: proc(p: ^Parser) {
+	kind := p.curr_token.kind;
+
+	#partial switch kind {
+	case .Comma:
+		error(p, p.curr_token.pos, "Expected ';', got ','");
+		next_token(p);
+	case .Semicolon:
+		next_token(p);
+	case .EOF:
+		// okay
+	case:
+		error(p, p.curr_token.pos, "Expected ';', got %s", p.curr_token.lit);
+		fix_advance(p);
+	}
+}
+
+parse_assignment :: proc(p: ^Parser) -> bool {
+	top_dict :: proc(p: ^Parser) -> ^Dict {
+		assert(len(p.dict_stack) > 0);
+		return p.dict_stack[len(p.dict_stack)-1];
+	}
+
+	if p.curr_token.kind == .Semicolon {
+		next_token(p);
+		return true;
+	}
+	if p.curr_token.kind == .EOF {
+		return false;
+	}
+
+	tok := p.curr_token;
+	if allow_token(p, .Ident) || allow_token(p, .String) {
+		expect_token(p, .Assign);
+		name, ok := unquote_string(p, tok);
+		if !ok { error(p, tok.pos, "Unable to unquote string"); }
+		expr, _ := parse_expr(p);
+		d := top_dict(p);
+		if _, ok2 := d[name]; ok2 {
+			error(p, tok.pos, "Previous declaration of %s", name);
+		} else {
+			d[name] = expr;
+		}
+		expect_semicolon(p);
+		return true;
+	}
+	error(p, tok.pos, "Expected an assignment, got %s", kind_to_string[tok.kind]);
+	fix_advance(p);
+	return false;
+}

core/encoding/cel/doc.odin

@@ -0,0 +1,51 @@
+/*
+	package cel
+
+	sample := `
+	x = 123;
+	y = 321.456;
+	z = x * (y - 1) / 2;
+	w = "foo" + "bar";
+
+	# This is a comment
+
+	asd = "Semicolons are optional"
+
+	a = {id = {b = 123}} # Dict
+	b = a.id.b
+
+	f = [1, 4, 9] # Array
+	g = f[2]
+
+	h = x < y and w == "foobar"
+	i = h ? 123 : "google"
+
+	j = nil
+
+	"127.0.0.1" = "value" # Keys can be strings
+
+	"foo" = {
+		"bar" = {
+			"baz" = 123, # optional commas if newline is present
+			"zab" = 456,
+			"abz" = 789,
+		},
+	};
+
+	bar = @"foo"["bar"].baz
+	`;
+
+
+	main :: proc() {
+		p, ok := create_from_string(sample);
+		if !ok {
+			return;
+		}
+		defer destroy(p);
+
+		if p.error_count == 0 {
+			print(p);
+		}
+	}
+*/
+package cel

core/encoding/cel/token.odin

@@ -0,0 +1,523 @@
+package cel
+
+import "core:fmt"
+import "core:unicode/utf8"
+
+using Kind :: enum {
+	Illegal,
+	EOF,
+	Comment,
+
+	_literal_start,
+		Ident,
+		Integer,
+		Float,
+		Char,
+		String,
+	_literal_end,
+
+	_keyword_start,
+		True,  // true
+		False, // false
+		Nil,   // nil
+	_keyword_end,
+
+
+	_operator_start,
+		Question, // ?
+
+		And,   // and
+		Or,    // or
+
+		Add,   // +
+		Sub,   // -
+		Mul,   // *
+		Quo,   // /
+		Rem,   // %
+
+		Not,   // !
+
+		Eq,    // ==
+		NotEq, // !=
+		Lt,    // <
+		Gt,    // >
+		LtEq,  // <=
+		GtEq,  // >=
+
+		At,    // @
+	_operator_end,
+
+	_punc_start,
+		Assign, // =
+
+		Open_Paren,    // (
+		Close_Paren,   // )
+		Open_Bracket,  // [
+		Close_Bracket, // ]
+		Open_Brace,    // {
+		Close_Brace,   // }
+
+		Colon,     // :
+		Semicolon, // ;
+		Comma,     // ,
+		Period,    // .
+	_punc_end,
+}
+
+
+Pos :: struct {
+	file:   string,
+	line:   int,
+	column: int,
+}
+
+Token :: struct {
+	kind:      Kind,
+	using pos: Pos,
+	lit:       string,
+}
+
+Tokenizer :: struct {
+	src:         []byte,
+
+	file:        string, // May not be used
+
+	curr_rune:   rune,
+	offset:      int,
+	read_offset: int,
+	line_offset: int,
+	line_count:  int,
+
+	insert_semi: bool,
+
+	error_count: int,
+}
+
+
+keywords := map[string]Kind{
+	"true"  = True,
+	"false" = False,
+	"nil"   = Nil,
+	"and"   = And,
+	"or"    = Or,
+};
+
+kind_to_string := [len(Kind)]string{
+	"illegal",
+	"EOF",
+	"comment",
+
+	"",
+	"identifier",
+	"integer",
+	"float",
+	"character",
+	"string",
+	"",
+
+	"",
+	"true", "false", "nil",
+	"",
+
+	"",
+	"?", "and", "or",
+	"+", "-", "*", "/", "%",
+	"!",
+	"==", "!=", "<", ">", "<=", ">=",
+	"@",
+	"",
+
+	"",
+	"=",
+	"(", ")",
+	"[", "]",
+	"{", "}",
+	":", ";", ",", ".",
+	"",
+};
+
+precedence :: proc(op: Kind) -> int {
+	#partial switch op {
+	case Question:
+		return 1;
+	case Or:
+		return 2;
+	case And:
+		return 3;
+	case Eq, NotEq, Lt, Gt, LtEq, GtEq:
+		return 4;
+	case Add, Sub:
+		return 5;
+	case Mul, Quo, Rem:
+		return 6;
+	}
+	return 0;
+}
+
+
+token_lookup :: proc(ident: string) -> Kind {
+	if tok, is_keyword := keywords[ident]; is_keyword {
+		return tok;
+	}
+	return Ident;
+}
+
+is_literal  :: proc(tok: Kind) -> bool { return _literal_start  < tok && tok < _literal_end;  }
+is_operator :: proc(tok: Kind) -> bool { return _operator_start < tok && tok < _operator_end; }
+is_keyword  :: proc(tok: Kind) -> bool { return _keyword_start  < tok && tok < _keyword_end;  }
+
+
+tokenizer_init :: proc(t: ^Tokenizer, src: []byte, file := "") {
+	t.src = src;
+	t.file = file;
+	t.curr_rune   = ' ';
+	t.offset      = 0;
+	t.read_offset = 0;
+	t.line_offset = 0;
+	t.line_count  = 1;
+
+	advance_to_next_rune(t);
+	if t.curr_rune == utf8.RUNE_BOM {
+		advance_to_next_rune(t);
+	}
+}
+
+token_error :: proc(t: ^Tokenizer, msg: string, args: ..any) {
+	fmt.eprintf("%s(%d:%d) Error: ", t.file, t.line_count, t.read_offset-t.line_offset+1);
+	fmt.eprintf(msg, ..args);
+	fmt.eprintln();
+	t.error_count += 1;
+}
+
+advance_to_next_rune :: proc(t: ^Tokenizer) {
+	if t.read_offset < len(t.src) {
+		t.offset = t.read_offset;
+		if t.curr_rune == '\n' {
+			t.line_offset = t.offset;
+			t.line_count += 1;
+		}
+		r, w := rune(t.src[t.read_offset]), 1;
+		switch {
+		case r == 0:
+			token_error(t, "Illegal character NUL");
+		case r >= utf8.RUNE_SELF:
+			r, w = utf8.decode_rune(t.src[t.read_offset:]);
+			if r == utf8.RUNE_ERROR && w == 1 {
+				token_error(t, "Illegal utf-8 encoding");
+			} else if r == utf8.RUNE_BOM && t.offset > 0 {
+				token_error(t, "Illegal byte order mark");
+			}
+		}
+
+		t.read_offset += w;
+		t.curr_rune = r;
+	} else {
+		t.offset = len(t.src);
+		if t.curr_rune == '\n' {
+			t.line_offset = t.offset;
+			t.line_count += 1;
+		}
+		t.curr_rune = utf8.RUNE_EOF;
+	}
+}
+
+
+get_pos :: proc(t: ^Tokenizer) -> Pos {
+	return Pos {
+		file   = t.file,
+		line   = t.line_count,
+		column = t.offset - t.line_offset + 1,
+	};
+}
+
+is_letter :: proc(r: rune) -> bool {
+	switch r {
+	case 'a'..='z', 'A'..='Z', '_':
+		return true;
+	}
+	return false;
+}
+
+is_digit :: proc(r: rune) -> bool {
+	switch r {
+	case '0'..='9':
+		return true;
+	}
+	return false;
+}
+
+skip_whitespace :: proc(t: ^Tokenizer) {
+	loop: for {
+		switch t.curr_rune {
+		case '\n':
+			if t.insert_semi {
+				break loop;
+			}
+			fallthrough;
+		case ' ', '\t', '\r', '\v', '\f':
+			advance_to_next_rune(t);
+
+		case:
+			break loop;
+		}
+	}
+}
+
+scan_identifier :: proc(t: ^Tokenizer) -> string {
+	offset := t.offset;
+	for is_letter(t.curr_rune) || is_digit(t.curr_rune) {
+		advance_to_next_rune(t);
+	}
+	return string(t.src[offset : t.offset]);
+}
+
+digit_value :: proc(r: rune) -> int {
+	switch r {
+	case '0'..='9': return int(r - '0');
+	case 'a'..='f': return int(r - 'a' + 10);
+	case 'A'..='F': return int(r - 'A' + 10);
+	}
+	return 16;
+}
+
+scan_number :: proc(t: ^Tokenizer, seen_decimal_point: bool) -> (Kind, string) {
+	scan_mantissa :: proc(t: ^Tokenizer, base: int) {
+		for digit_value(t.curr_rune) < base || t.curr_rune == '_' {
+			advance_to_next_rune(t);
+		}
+	}
+	scan_exponent :: proc(t: ^Tokenizer, tok: Kind, offset: int) -> (kind: Kind, text: string) {
+		kind = tok;
+		if t.curr_rune == 'e' || t.curr_rune == 'E' {
+			kind = Float;
+			advance_to_next_rune(t);
+			if t.curr_rune == '-' || t.curr_rune == '+' {
+				advance_to_next_rune(t);
+			}
+			if digit_value(t.curr_rune) < 10 {
+				scan_mantissa(t, 10);
+			} else {
+				token_error(t, "Illegal floating point exponent");
+			}
+		}
+		text = string(t.src[offset : t.offset]);
+		return;
+	}
+	scan_fraction :: proc(t: ^Tokenizer, tok: Kind, offset: int) -> (kind: Kind, text: string)  {
+		kind = tok;
+		if t.curr_rune == '.' {
+			kind = Float;
+			advance_to_next_rune(t);
+			scan_mantissa(t, 10);
+		}
+
+		return scan_exponent(t, kind, offset);
+	}
+
+	offset := t.offset;
+	tok := Integer;
+
+	if seen_decimal_point {
+		offset -= 1;
+		tok = Float;
+		scan_mantissa(t, 10);
+		return scan_exponent(t, tok, offset);
+	}
+
+	if t.curr_rune == '0' {
+		offset = t.offset;
+		advance_to_next_rune(t);
+		switch t.curr_rune {
+		case 'b', 'B':
+			advance_to_next_rune(t);
+			scan_mantissa(t, 2);
+			if t.offset - offset <= 2 {
+				token_error(t, "Illegal binary number");
+			}
+		case 'o', 'O':
+			advance_to_next_rune(t);
+			scan_mantissa(t, 8);
+			if t.offset - offset <= 2 {
+				token_error(t, "Illegal octal number");
+			}
+		case 'x', 'X':
+			advance_to_next_rune(t);
+			scan_mantissa(t, 16);
+			if t.offset - offset <= 2 {
+				token_error(t, "Illegal hexadecimal number");
+			}
+		case:
+			scan_mantissa(t, 10);
+			switch t.curr_rune {
+			case '.', 'e', 'E':
+				return scan_fraction(t, tok, offset);
+			}
+		}
+
+		return tok, string(t.src[offset:t.offset]);
+	}
+
+	scan_mantissa(t, 10);
+
+	return scan_fraction(t, tok, offset);
+}
+
+scan :: proc(t: ^Tokenizer) -> Token {
+	skip_whitespace(t);
+
+	offset := t.offset;
+
+	tok: Kind;
+	pos := get_pos(t);
+	lit: string;
+
+	insert_semi := false;
+
+
+	switch r := t.curr_rune; {
+	case is_letter(r):
+		insert_semi = true;
+		lit = scan_identifier(t);
+		tok = Ident;
+		if len(lit) > 1 {
+			tok = token_lookup(lit);
+		}
+
+	case '0' <= r && r <= '9':
+		insert_semi = true;
+		tok, lit = scan_number(t, false);
+
+	case:
+		advance_to_next_rune(t);
+		switch r {
+		case -1:
+			if t.insert_semi {
+				t.insert_semi = false;
+				return Token{Semicolon, pos, "\n"};
+			}
+			return Token{EOF, pos, "\n"};
+
+		case '\n':
+			t.insert_semi = false;
+			return Token{Semicolon, pos, "\n"};
+
+		case '"':
+			insert_semi = true;
+			quote := r;
+			tok = String;
+			for {
+				this_r := t.curr_rune;
+				if this_r == '\n' || r < 0 {
+					token_error(t, "String literal not terminated");
+					break;
+				}
+				advance_to_next_rune(t);
+				if this_r == quote {
+					break;
+				}
+				// TODO(bill); Handle properly
+				if this_r == '\\' && t.curr_rune == quote {
+					advance_to_next_rune(t);
+				}
+			}
+
+			lit = string(t.src[offset+1:t.offset-1]);
+
+
+		case '#':
+			for t.curr_rune != '\n' && t.curr_rune >= 0 {
+				advance_to_next_rune(t);
+			}
+			if t.insert_semi {
+				t.insert_semi = false;
+				return Token{Semicolon, pos, "\n"};
+			}
+			// Recursive!
+			return scan(t);
+
+		case '?': tok = Question;
+		case ':': tok = Colon;
+		case '@': tok = At;
+
+		case ';':
+			tok = Semicolon;
+			lit = ";";
+		case ',': tok = Comma;
+
+		case '(':
+			tok = Open_Paren;
+		case ')':
+			insert_semi = true;
+			tok = Close_Paren;
+
+		case '[':
+			tok = Open_Bracket;
+		case ']':
+			insert_semi = true;
+			tok = Close_Bracket;
+
+		case '{':
+			tok = Open_Brace;
+		case '}':
+			insert_semi = true;
+			tok = Close_Brace;
+
+		case '+': tok = Add;
+		case '-': tok = Sub;
+		case '*': tok = Mul;
+		case '/': tok = Quo;
+		case '%': tok = Rem;
+
+		case '!':
+			tok = Not;
+			if t.curr_rune == '=' {
+				advance_to_next_rune(t);
+				tok = NotEq;
+			}
+
+		case '=':
+			tok = Assign;
+			if t.curr_rune == '=' {
+				advance_to_next_rune(t);
+				tok = Eq;
+			}
+
+		case '<':
+			tok = Lt;
+			if t.curr_rune == '=' {
+				advance_to_next_rune(t);
+				tok = LtEq;
+			}
+
+		case '>':
+			tok = Gt;
+			if t.curr_rune == '=' {
+				advance_to_next_rune(t);
+				tok = GtEq;
+			}
+
+		case '.':
+			if '0' <= t.curr_rune && t.curr_rune <= '9' {
+				insert_semi = true;
+				tok, lit = scan_number(t, true);
+			} else {
+				tok = Period;
+			}
+
+		case:
+			if r != utf8.RUNE_BOM {
+				token_error(t, "Illegal character '%r'", r);
+			}
+			insert_semi = t.insert_semi;
+			tok = Illegal;
+		}
+	}
+
+	t.insert_semi = insert_semi;
+
+	if lit == "" {
+		lit = string(t.src[offset:t.offset]);
+	}
+
+	return Token{tok, pos, lit};
+}

core/encoding/csv/reader.odin

@@ -0,0 +1,406 @@
+// package csv reads and writes comma-separated values (CSV) files.
+// This package supports the format described in RFC 4180 <https://tools.ietf.org/html/rfc4180.html>
+package csv
+
+import "core:bufio"
+import "core:bytes"
+import "core:io"
+import "core:strings"
+import "core:unicode/utf8"
+
+// Reader is a data structure used for reading records from a CSV-encoded file
+//
+// The associated procedures for Reader expects its input to conform to RFC 4180.
+Reader :: struct {
+	// comma is the field delimiter
+	// reader_init will set it to be ','
+	// A "comma" must be a valid rune, nor can it be \r, \n, or the Unicode replacement character (0xfffd)
+	comma: rune,
+
+	// comment, if not 0, is the comment character
+	// Lines beginning with the comment character without a preceding whitespace are ignored
+	comment: rune,
+
+	// fields_per_record is the number of expected fields per record
+	//         if fields_per_record is >0, 'read' requires each record to have that field count
+	//         if fields_per_record is  0, 'read' sets it to the field count in the first record
+	//         if fields_per_record is <0, no check is made and records may have a variable field count
+	fields_per_record: int,
+
+	// If trim_leading_space is true, leading whitespace in a field is ignored
+	// This is done even if the field delimiter (comma), is whitespace
+	trim_leading_space: bool,
+
+	// If lazy_quotes is true, a quote may appear in an unquoted field and a non-doubled quote may appear in a quoted field
+	lazy_quotes: bool,
+
+	// reuse_record controls whether calls to 'read' may return a slice using the backing buffer
+	// for performance
+	// By default, each call to 'read' returns a newly allocated slice
+	reuse_record: bool,
+
+	// reuse_record_buffer controls whether calls to 'read' clone the strings of each field or uses
+	// the data stored in record buffer for performance
+	// By default, each call to 'read' clones the strings of each field
+	reuse_record_buffer: bool,
+
+
+	// internal buffers
+	r:             bufio.Reader,
+	line_count:    int, // current line being read in the CSV file
+	raw_buffer:    [dynamic]byte,
+	record_buffer: [dynamic]byte,
+	field_indices: [dynamic]int,
+	last_record:   [dynamic]string,
+	sr: strings.Reader, // used by reader_init_with_string
+}
+
+
+Reader_Error_Kind :: enum {
+	Bare_Quote,
+	Quote,
+	Field_Count,
+	Invalid_Delim,
+}
+
+reader_error_kind_string := [Reader_Error_Kind]string{
+	.Bare_Quote     = "bare \" in non-quoted field",
+	.Quote          = "extra or missing \" in quoted field",
+	.Field_Count    = "wrong field count",
+	.Invalid_Delim  = "invalid delimiter",
+};
+
+Reader_Error :: struct {
+	kind:          Reader_Error_Kind,
+	start_line:    int,
+	line:          int,
+	column:        int,
+	expected, got: int, // used by .Field_Count
+}
+
+Error :: union {
+	Reader_Error,
+	io.Error,
+}
+
+DEFAULT_RECORD_BUFFER_CAPACITY :: 256;
+
+// reader_init initializes a new Reader from r
+reader_init :: proc(reader: ^Reader, r: io.Reader, buffer_allocator := context.allocator) {
+	reader.comma = ',';
+
+	context.allocator = buffer_allocator;
+	reserve(&reader.record_buffer, DEFAULT_RECORD_BUFFER_CAPACITY);
+	reserve(&reader.raw_buffer,    0);
+	reserve(&reader.field_indices, 0);
+	reserve(&reader.last_record,   0);
+	bufio.reader_init(&reader.r, r);
+}
+
+
+// reader_init_with_string initializes a new Reader from s
+reader_init_with_string :: proc(reader: ^Reader, s: string, buffer_allocator := context.allocator) {
+	strings.reader_init(&reader.sr, s);
+	r, _ := io.to_reader(strings.reader_to_stream(&reader.sr));
+	reader_init(reader, r, buffer_allocator);
+}
+
+// reader_destroy destroys a Reader
+reader_destroy :: proc(r: ^Reader) {
+	delete(r.raw_buffer);
+	delete(r.record_buffer);
+	delete(r.field_indices);
+	delete(r.last_record);
+	bufio.reader_destroy(&r.r);
+}
+
+// read reads a single record (a slice of fields) from r
+//
+// All \r\n sequences are normalized to \n, including multi-line field
+read :: proc(r: ^Reader, allocator := context.allocator) -> (record: []string, err: Error) {
+	if r.reuse_record {
+		record, err = _read_record(r, &r.last_record, allocator);
+		resize(&r.last_record, len(record));
+		copy(r.last_record[:], record);
+	} else {
+		record, err = _read_record(r, nil, allocator);
+	}
+	return;
+}
+
+// is_io_error checks where an Error is a specific io.Error kind
+is_io_error :: proc(err: Error, io_err: io.Error) -> bool {
+	if v, ok := err.(io.Error); ok {
+		return v == io_err;
+	}
+	return false;
+}
+
+
+// read_all reads all the remaining records from r.
+// Each record is a slice of fields.
+// read_all is defined to read until an EOF, and does not treat, and does not treat EOF as an error
+read_all :: proc(r: ^Reader, allocator := context.allocator) -> ([][]string, Error) {
+	context.allocator = allocator;
+	records: [dynamic][]string;
+	for {
+		record, rerr := _read_record(r, nil, allocator);
+		if is_io_error(rerr, .EOF) {
+			return records[:], nil;
+		}
+		if rerr != nil {
+			return nil, rerr;
+		}
+		append(&records, record);
+	}
+}
+
+// read reads a single record (a slice of fields) from the provided input.
+read_from_string :: proc(input: string, record_allocator := context.allocator, buffer_allocator := context.allocator) -> (record: []string, n: int, err: Error) {
+	ir: strings.Reader;
+	strings.reader_init(&ir, input);
+	input_reader, _ := io.to_reader(strings.reader_to_stream(&ir));
+
+	r: Reader;
+	reader_init(&r, input_reader, buffer_allocator);
+	defer reader_destroy(&r);
+	record, err = read(&r, record_allocator);
+	n = int(r.r.r);
+	return;
+}
+
+
+// read_all reads all the remaining records from the provided input.
+read_all_from_string :: proc(input: string, records_allocator := context.allocator, buffer_allocator := context.allocator) -> ([][]string, Error) {
+	ir: strings.Reader;
+	strings.reader_init(&ir, input);
+	input_reader, _ := io.to_reader(strings.reader_to_stream(&ir));
+
+	r: Reader;
+	reader_init(&r, input_reader, buffer_allocator);
+	defer reader_destroy(&r);
+	return read_all(&r, records_allocator);
+}
+
+@private
+is_valid_delim :: proc(r: rune) -> bool {
+	switch r {
+	case 0, '"', '\r', '\n', utf8.RUNE_ERROR:
+		return false;
+	}
+	return utf8.valid_rune(r);
+}
+
+@private
+_read_record :: proc(r: ^Reader, dst: ^[dynamic]string, allocator := context.allocator) -> ([]string, Error) {
+	read_line :: proc(r: ^Reader) -> ([]byte, io.Error) {
+		line, err := bufio.reader_read_slice(&r.r, '\n');
+		if err == .Buffer_Full {
+			clear(&r.raw_buffer);
+			append(&r.raw_buffer, ..line);
+			for err == .Buffer_Full {
+				line, err = bufio.reader_read_slice(&r.r, '\n');
+				append(&r.raw_buffer, ..line);
+			}
+			line = r.raw_buffer[:];
+		}
+		if len(line) > 0 && err == .EOF {
+			err = nil;
+			if line[len(line)-1] == '\r' {
+				line = line[:len(line)-1];
+			}
+		}
+		r.line_count += 1;
+
+		// normalize \r\n to \n
+		n := len(line);
+		for n >= 2 && string(line[n-2:]) == "\r\n" {
+			line[n-2] = '\n';
+			line = line[:n-1];
+		}
+
+		return line, err;
+	}
+
+	length_newline :: proc(b: []byte) -> int {
+		if len(b) > 0 && b[len(b)-1] == '\n' {
+			return 1;
+		}
+		return 0;
+	}
+
+	next_rune :: proc(b: []byte) -> rune {
+		r, _ := utf8.decode_rune(b);
+		return r;
+	}
+
+	if r.comma == r.comment ||
+	   !is_valid_delim(r.comma) ||
+	   (r.comment != 0 && !is_valid_delim(r.comment)) {
+		err := Reader_Error{
+			kind = .Invalid_Delim,
+			line = r.line_count,
+		};
+		return nil, err;
+	}
+
+	line, full_line: []byte;
+	err_read: io.Error;
+	for err_read == nil {
+		line, err_read = read_line(r);
+		if r.comment != 0 && next_rune(line) == r.comment {
+			line = nil;
+			continue;
+		}
+		if err_read == nil && len(line) == length_newline(line) {
+			line = nil;
+			continue;
+		}
+		full_line = line;
+		break;
+	}
+
+	if is_io_error(err_read, .EOF) {
+		return nil, err_read;
+	}
+
+	err: Error;
+	quote_len :: len(`"`);
+	comma_len := utf8.rune_size(r.comma);
+	record_line := r.line_count;
+	clear(&r.record_buffer);
+	clear(&r.field_indices);
+
+	parse_field: for {
+		if r.trim_leading_space {
+			line = bytes.trim_left_space(line);
+		}
+		if len(line) == 0 || line[0] != '"' {
+			i := bytes.index_rune(line, r.comma);
+			field := line;
+			if i >= 0 {
+				field = field[:i];
+			} else {
+				field = field[:len(field) - length_newline(field)];
+			}
+
+			if !r.lazy_quotes {
+				if j := bytes.index_byte(field, '"'); j >= 0 {
+					column := utf8.rune_count(full_line[:len(full_line) - len(line[j:])]);
+					err = Reader_Error{
+						kind = .Bare_Quote,
+						start_line = record_line,
+						line = r.line_count,
+						column = column,
+					};
+					break parse_field;
+				}
+			}
+			append(&r.record_buffer, ..field);
+			append(&r.field_indices, len(r.record_buffer));
+			if i >= 0 {
+				line = line[i+comma_len:];
+				continue parse_field;
+			}
+			break parse_field;
+
+		} else {
+			line = line[quote_len:];
+			for {
+				i := bytes.index_byte(line, '"');
+				switch {
+				case i >= 0:
+					append(&r.record_buffer, ..line[:i]);
+					line = line[i+quote_len:];
+					switch ch := next_rune(line); {
+					case ch == '"': // append quote
+						append(&r.record_buffer, '"');
+						line = line[quote_len:];
+					case ch == r.comma: // end of field
+						line = line[comma_len:];
+						append(&r.field_indices, len(r.record_buffer));
+						continue parse_field;
+					case length_newline(line) == len(line): // end of line
+						append(&r.field_indices, len(r.record_buffer));
+						break parse_field;
+					case r.lazy_quotes: // bare quote
+						append(&r.record_buffer, '"');
+					case: // invalid non-escaped quote
+						column := utf8.rune_count(full_line[:len(full_line) - len(line) - quote_len]);
+						err = Reader_Error{
+							kind = .Quote,
+							start_line = record_line,
+							line = r.line_count,
+							column = column,
+						};
+						break parse_field;
+					}
+
+				case len(line) > 0:
+					append(&r.record_buffer, ..line);
+					if err_read != nil {
+						break parse_field;
+					}
+					line, err_read = read_line(r);
+					if is_io_error(err_read, .EOF) {
+						err_read = nil;
+					}
+					full_line = line;
+
+				case:
+					if !r.lazy_quotes && err_read == nil {
+						column := utf8.rune_count(full_line);
+						err = Reader_Error{
+							kind = .Quote,
+							start_line = record_line,
+							line = r.line_count,
+							column = column,
+						};
+						break parse_field;
+					}
+					append(&r.field_indices, len(r.record_buffer));
+					break parse_field;
+				}
+			}
+		}
+	}
+
+	if err == nil && err_read != nil {
+		err = err_read;
+	}
+
+	context.allocator = allocator;
+	dst := dst;
+	str := string(r.record_buffer[:]);
+	if dst == nil {
+		// use local variable
+		dst = &([dynamic]string){};
+	}
+	clear(dst);
+	resize(dst, len(r.field_indices));
+	pre_idx: int;
+	for idx, i in r.field_indices {
+		field := str[pre_idx:idx];
+		if !r.reuse_record_buffer {
+			field = strings.clone(field);
+		}
+		dst[i] = field;
+		pre_idx = idx;
+	}
+
+	if r.fields_per_record > 0 {
+		if len(dst) != r.fields_per_record && err == nil {
+			err = Reader_Error{
+				kind = .Field_Count,
+				start_line = record_line,
+				line = r.line_count,
+				expected = r.fields_per_record,
+				got = len(dst),
+			};
+		}
+	} else if r.fields_per_record == 0 {
+		r.fields_per_record = len(dst);
+	}
+	return dst[:], err;
+
+}

core/encoding/csv/writer.odin

@@ -0,0 +1,147 @@
+package csv
+
+import "core:io"
+import "core:strings"
+import "core:unicode/utf8"
+
+// Writer is a data structure used for writing records using a CSV-encoding.
+Writer :: struct {
+	// Field delimiter (set to ',' with writer_init)
+	comma: rune,
+
+	// if set to true, \r\n will be used as the line terminator
+	use_crlf: bool,
+
+	w: io.Writer,
+}
+
+// writer_init initializes a Writer that writes to w
+writer_init :: proc(writer: ^Writer, w: io.Writer) {
+	writer.comma = ',';
+	writer.w = w;
+}
+
+// write writes a single CSV records to w with any of the necessarily quoting.
+// A record is a slice of strings, where each string is a single field.
+//
+// If the underlying io.Writer requires flushing, make sure to call io.flush
+write :: proc(w: ^Writer, record: []string) -> io.Error {
+	CHAR_SET :: "\n\r\"";
+
+	field_needs_quoting :: proc(w: ^Writer, field: string) -> bool {
+		switch {
+		case field == "": // No need to quote empty strings
+			return false;
+		case field == `\.`: // Postgres is weird
+			return true;
+		case w.comma < utf8.RUNE_SELF: // ASCII optimization
+			for i in 0..<len(field) {
+				switch field[i] {
+				case '\n', '\r', '"', byte(w.comma):
+					return true;
+				}
+			}
+		case:
+			if strings.contains_rune(field, w.comma) >= 0 {
+				return true;
+			}
+			if strings.contains_any(field, CHAR_SET) {
+				return true;
+			}
+		}
+
+		// Leading spaces need quoting
+		r, _ := utf8.decode_rune_in_string(field);
+		return strings.is_space(r);
+	}
+
+	if !is_valid_delim(w.comma) {
+		return .No_Progress; // TODO(bill): Is this a good error?
+	}
+
+	for _, field_idx in record {
+		// NOTE(bill): declared like this so that the field can be modified later if necessary
+		field := record[field_idx];
+
+		if field_idx > 0 {
+			if _, err := io.write_rune(w.w, w.comma); err != nil {
+				return err;
+			}
+		}
+
+		if !field_needs_quoting(w, field) {
+			if _, err := io.write_string(w.w, field); err != nil {
+				return err;
+			}
+			continue;
+		}
+
+		if err := io.write_byte(w.w, '"'); err != nil {
+			return err;
+		}
+
+		for len(field) > 0 {
+			i := strings.index_any(field, CHAR_SET);
+			if i < 0 {
+				i = len(field);
+			}
+
+			if _, err := io.write_string(w.w, field[:i]); err != nil {
+				return err;
+			}
+			field = field[i:];
+
+			if len(field) > 0 {
+				switch field[0] {
+				case '\r':
+					if !w.use_crlf {
+						if err := io.write_byte(w.w, '\r'); err != nil {
+							return err;
+						}
+					}
+				case '\n':
+					if w.use_crlf {
+						if _, err := io.write_string(w.w, "\r\n"); err != nil {
+							return err;
+						}
+					} else {
+						if err := io.write_byte(w.w, '\n'); err != nil {
+							return err;
+						}
+					}
+				case '"':
+					if _, err := io.write_string(w.w, `""`); err != nil {
+						return err;
+					}
+				}
+				field = field[1:];
+			}
+		}
+		if err := io.write_byte(w.w, '"'); err != nil {
+			return err;
+		}
+	}
+
+	if w.use_crlf {
+		_, err := io.write_string(w.w, "\r\n");
+		return err;
+	}
+	return io.write_byte(w.w, '\n');
+}
+
+// write_all writes multiple CSV records to w using write, and then flushes (if necessary).
+write_all :: proc(w: ^Writer, records: [][]string) -> io.Error {
+	for record in records {
+		err := write(w, record);
+		if err != nil {
+			return err;
+		}
+	}
+	return writer_flush(w);
+}
+
+// writer_flush flushes the underlying io.Writer.
+// If the underlying io.Writer does not support flush, nil is returned.
+writer_flush :: proc(w: ^Writer) -> io.Error {
+	return io.flush(auto_cast w.w);
+}

core/encoding/json/marshal.odin

@@ -0,0 +1,316 @@
+package json
+
+import "core:mem"
+import "core:math/bits"
+import "core:runtime"
+import "core:strconv"
+import "core:strings"
+
+Marshal_Error :: enum {
+	None,
+	Unsupported_Type,
+	Invalid_Data,
+}
+
+marshal :: proc(v: any, allocator := context.allocator) -> ([]byte, Marshal_Error) {
+	b: strings.Builder;
+	strings.init_builder(&b, allocator);
+
+	err := marshal_arg(&b, v);
+
+	if err != .None {
+		strings.destroy_builder(&b);
+		return nil, err;
+	}
+	if len(b.buf) == 0 {
+		strings.destroy_builder(&b);
+		return nil, err;
+	}
+	return b.buf[:], err;
+}
+
+
+marshal_arg :: proc(b: ^strings.Builder, v: any) -> Marshal_Error {
+	using strings;
+	using runtime;
+	if v == nil {
+		write_string(b, "null");
+		return .None;
+	}
+
+	ti := type_info_base(type_info_of(v.id));
+	a := any{v.data, ti.id};
+
+	switch info in ti.variant {
+	case Type_Info_Named:
+		unreachable();
+
+	case Type_Info_Integer:
+		buf: [21]byte;
+		u: u64;
+		switch i in a {
+		case i8:      u = u64(i);
+		case i16:     u = u64(i);
+		case i32:     u = u64(i);
+		case i64:     u = u64(i);
+		case int:     u = u64(i);
+		case u8:      u = u64(i);
+		case u16:     u = u64(i);
+		case u32:     u = u64(i);
+		case u64:     u = u64(i);
+		case uint:    u = u64(i);
+		case uintptr: u = u64(i);
+
+		case i16le: u = u64(i);
+		case i32le: u = u64(i);
+		case i64le: u = u64(i);
+		case u16le: u = u64(i);
+		case u32le: u = u64(i);
+		case u64le: u = u64(i);
+
+		case i16be: u = u64(i);
+		case i32be: u = u64(i);
+		case i64be: u = u64(i);
+		case u16be: u = u64(i);
+		case u32be: u = u64(i);
+		case u64be: u = u64(i);
+		}
+
+		s := strconv.append_bits(buf[:], u, 10, info.signed, 8*ti.size, "0123456789", nil);
+		write_string(b, s);
+
+
+	case Type_Info_Rune:
+		r := a.(rune);
+		write_byte(b, '"');
+		write_escaped_rune(b, r, '"', true);
+		write_byte(b, '"');
+
+	case Type_Info_Float:
+		val: f64;
+		switch f in a {
+		case f16: val = f64(f);
+		case f32: val = f64(f);
+		case f64: val = f64(f);
+		}
+
+		buf: [386]byte;
+
+		str := strconv.append_float(buf[1:], val, 'f', 2*ti.size, 8*ti.size);
+		s := buf[:len(str)+1];
+		if s[1] == '+' || s[1] == '-' {
+			s = s[1:];
+		} else {
+			s[0] = '+';
+		}
+		if s[0] == '+' {
+			s = s[1:];
+		}
+
+		write_string(b, string(s));
+
+	case Type_Info_Complex:
+		return .Unsupported_Type;
+
+	case Type_Info_Quaternion:
+		return .Unsupported_Type;
+
+	case Type_Info_String:
+		switch s in a {
+		case string:  write_quoted_string(b, s);
+		case cstring: write_quoted_string(b, string(s));
+		}
+
+	case Type_Info_Boolean:
+		val: bool;
+		switch b in a {
+		case bool: val = bool(b);
+		case b8:   val = bool(b);
+		case b16:  val = bool(b);
+		case b32:  val = bool(b);
+		case b64:  val = bool(b);
+		}
+		write_string_builder(b, val ? "true" : "false");
+
+	case Type_Info_Any:
+		return .Unsupported_Type;
+
+	case Type_Info_Type_Id:
+		return .Unsupported_Type;
+
+	case Type_Info_Pointer:
+		return .Unsupported_Type;
+
+	case Type_Info_Procedure:
+		return .Unsupported_Type;
+
+	case Type_Info_Tuple:
+		return .Unsupported_Type;
+
+	case Type_Info_Enumerated_Array:
+		return .Unsupported_Type;
+
+	case Type_Info_Simd_Vector:
+		return .Unsupported_Type;
+
+	case Type_Info_Relative_Pointer:
+		return .Unsupported_Type;
+
+	case Type_Info_Relative_Slice:
+		return .Unsupported_Type;
+
+	case Type_Info_Array:
+		write_byte(b, '[');
+		for i in 0..<info.count {
+			if i > 0 { write_string(b, ", "); }
+
+			data := uintptr(v.data) + uintptr(i*info.elem_size);
+			marshal_arg(b, any{rawptr(data), info.elem.id});
+		}
+		write_byte(b, ']');
+
+	case Type_Info_Dynamic_Array:
+		write_byte(b, '[');
+		array := cast(^mem.Raw_Dynamic_Array)v.data;
+		for i in 0..<array.len {
+			if i > 0 { write_string(b, ", "); }
+
+			data := uintptr(array.data) + uintptr(i*info.elem_size);
+			marshal_arg(b, any{rawptr(data), info.elem.id});
+		}
+		write_byte(b, ']');
+
+	case Type_Info_Slice:
+		write_byte(b, '[');
+		slice := cast(^mem.Raw_Slice)v.data;
+		for i in 0..<slice.len {
+			if i > 0 { write_string(b, ", "); }
+
+			data := uintptr(slice.data) + uintptr(i*info.elem_size);
+			marshal_arg(b, any{rawptr(data), info.elem.id});
+		}
+		write_byte(b, ']');
+
+	case Type_Info_Map:
+		m := (^mem.Raw_Map)(v.data);
+
+		write_byte(b, '{');
+		if m != nil {
+			if info.generated_struct == nil {
+				return .Unsupported_Type;
+			}
+			entries    := &m.entries;
+			gs         := type_info_base(info.generated_struct).variant.(Type_Info_Struct);
+			ed         := type_info_base(gs.types[1]).variant.(Type_Info_Dynamic_Array);
+			entry_type := ed.elem.variant.(Type_Info_Struct);
+			entry_size := ed.elem_size;
+
+			for i in 0..<entries.len {
+				if i > 0 { write_string(b, ", "); }
+
+				data := uintptr(entries.data) + uintptr(i*entry_size);
+				key   := rawptr(data + entry_type.offsets[2]);
+				value := rawptr(data + entry_type.offsets[3]);
+
+				marshal_arg(b, any{key, info.key.id});
+				write_string(b, ": ");
+				marshal_arg(b, any{value, info.value.id});
+			}
+		}
+		write_byte(b, '}');
+
+	case Type_Info_Struct:
+		write_byte(b, '{');
+		for name, i in info.names {
+			if i > 0 { write_string(b, ", "); }
+			write_quoted_string(b, name);
+			write_string(b, ": ");
+
+			id := info.types[i].id;
+			data := rawptr(uintptr(v.data) + info.offsets[i]);
+			marshal_arg(b, any{data, id});
+		}
+		write_byte(b, '}');
+
+	case Type_Info_Union:
+		tag_ptr := uintptr(v.data) + info.tag_offset;
+		tag_any := any{rawptr(tag_ptr), info.tag_type.id};
+
+		tag: i64 = -1;
+		switch i in tag_any {
+		case u8:   tag = i64(i);
+		case i8:   tag = i64(i);
+		case u16:  tag = i64(i);
+		case i16:  tag = i64(i);
+		case u32:  tag = i64(i);
+		case i32:  tag = i64(i);
+		case u64:  tag = i64(i);
+		case i64:  tag = i64(i);
+		case: panic("Invalid union tag type");
+		}
+
+		if v.data == nil || tag == 0 {
+			write_string(b, "null");
+		} else {
+			id := info.variants[tag-1].id;
+			marshal_arg(b, any{v.data, id});
+		}
+
+	case Type_Info_Enum:
+		return marshal_arg(b, any{v.data, info.base.id});
+
+	case Type_Info_Bit_Set:
+		is_bit_set_different_endian_to_platform :: proc(ti: ^runtime.Type_Info) -> bool {
+			if ti == nil {
+				return false;
+			}
+			t := runtime.type_info_base(ti);
+			#partial switch info in t.variant {
+			case runtime.Type_Info_Integer:
+				switch info.endianness {
+				case .Platform: return false;
+				case .Little:   return ODIN_ENDIAN != "little";
+				case .Big:      return ODIN_ENDIAN != "big";
+				}
+			}
+			return false;
+		}
+
+		bit_data: u64;
+		bit_size := u64(8*ti.size);
+
+		do_byte_swap := is_bit_set_different_endian_to_platform(info.underlying);
+
+		switch bit_size {
+		case  0: bit_data = 0;
+		case  8:
+			x := (^u8)(v.data)^;
+			bit_data = u64(x);
+		case 16:
+			x := (^u16)(v.data)^;
+			if do_byte_swap {
+				x = bits.byte_swap(x);
+			}
+			bit_data = u64(x);
+		case 32:
+			x := (^u32)(v.data)^;
+			if do_byte_swap {
+				x = bits.byte_swap(x);
+			}
+			bit_data = u64(x);
+		case 64:
+			x := (^u64)(v.data)^;
+			if do_byte_swap {
+				x = bits.byte_swap(x);
+			}
+			bit_data = u64(x);
+		case: panic("unknown bit_size size");
+		}
+		write_u64(b, bit_data);
+
+
+		return .Unsupported_Type;
+	}
+
+	return .None;
+}

core/encoding/json/parser.odin

@@ -0,0 +1,459 @@
+package json
+
+import "core:mem"
+import "core:unicode/utf8"
+import "core:strconv"
+
+Parser :: struct {
+	tok:            Tokenizer,
+	prev_token:     Token,
+	curr_token:     Token,
+	spec:           Specification,
+	allocator:      mem.Allocator,
+	unmarshal_data: any,
+	parse_integers: bool,
+}
+
+make_parser :: proc(data: []byte, spec := Specification.JSON, parse_integers := false, allocator := context.allocator) -> Parser {
+	p: Parser;
+	p.tok = make_tokenizer(data, spec, parse_integers);
+	p.spec = spec;
+	p.allocator = allocator;
+	assert(p.allocator.procedure != nil);
+	advance_token(&p);
+	return p;
+}
+
+parse :: proc(data: []byte, spec := Specification.JSON, parse_integers := false, allocator := context.allocator) -> (Value, Error) {
+	context.allocator = allocator;
+	p := make_parser(data, spec, parse_integers, allocator);
+
+	if p.spec == Specification.JSON5 {
+		return parse_value(&p);
+	}
+	return parse_object(&p);
+}
+
+token_end_pos :: proc(tok: Token) -> Pos {
+	end := tok.pos;
+	end.offset += len(tok.text);
+	return end;
+}
+
+advance_token :: proc(p: ^Parser) -> (Token, Error) {
+	err: Error;
+	p.prev_token = p.curr_token;
+	p.curr_token, err = get_token(&p.tok);
+	return p.prev_token, err;
+}
+
+
+allow_token :: proc(p: ^Parser, kind: Token_Kind) -> bool {
+	if p.curr_token.kind == kind {
+		advance_token(p);
+		return true;
+	}
+	return false;
+}
+
+expect_token :: proc(p: ^Parser, kind: Token_Kind) -> Error {
+	prev := p.curr_token;
+	advance_token(p);
+	if prev.kind == kind {
+		return .None;
+	}
+	return .Unexpected_Token;
+}
+
+
+
+parse_value :: proc(p: ^Parser) -> (value: Value, err: Error) {
+	value.pos = p.curr_token.pos;
+	defer value.end = token_end_pos(p.prev_token);
+
+	token := p.curr_token;
+	#partial switch token.kind {
+	case .Null:
+		value.value = Null{};
+		advance_token(p);
+		return;
+	case .False:
+		value.value = Boolean(false);
+		advance_token(p);
+		return;
+	case .True:
+		value.value = Boolean(true);
+		advance_token(p);
+		return;
+
+	case .Integer:
+		i, _ := strconv.parse_i64(token.text);
+		value.value = Integer(i);
+		advance_token(p);
+		return;
+	case .Float:
+		f, _ := strconv.parse_f64(token.text);
+		value.value = Float(f);
+		advance_token(p);
+		return;
+	case .String:
+		value.value = String(unquote_string(token, p.spec, p.allocator));
+		advance_token(p);
+		return;
+
+	case .Open_Brace:
+		return parse_object(p);
+
+	case .Open_Bracket:
+		return parse_array(p);
+
+	case:
+		if p.spec == Specification.JSON5 {
+			#partial switch token.kind {
+			case .Infinity:
+				inf: u64 = 0x7ff0000000000000;
+				if token.text[0] == '-' {
+					inf = 0xfff0000000000000;
+				}
+				value.value = transmute(f64)inf;
+				advance_token(p);
+				return;
+			case .NaN:
+				nan: u64 = 0x7ff7ffffffffffff;
+				if token.text[0] == '-' {
+					nan = 0xfff7ffffffffffff;
+				}
+				value.value = transmute(f64)nan;
+				advance_token(p);
+				return;
+			}
+		}
+	}
+
+	err = .Unexpected_Token;
+	advance_token(p);
+	return;
+}
+
+parse_array :: proc(p: ^Parser) -> (value: Value, err: Error) {
+	value.pos = p.curr_token.pos;
+	defer value.end = token_end_pos(p.prev_token);
+	if err = expect_token(p, .Open_Bracket); err != .None {
+		return;
+	}
+
+	array: Array;
+	array.allocator = p.allocator;
+	defer if err != .None {
+		for elem in array {
+			destroy_value(elem);
+		}
+		delete(array);
+	}
+
+	for p.curr_token.kind != .Close_Bracket {
+		elem, elem_err := parse_value(p);
+		if elem_err != .None {
+			err = elem_err;
+			return;
+		}
+		append(&array, elem);
+
+		// Disallow trailing commas for the time being
+		if allow_token(p, .Comma) {
+			continue;
+		} else {
+			break;
+		}
+	}
+
+	if err = expect_token(p, .Close_Bracket); err != .None {
+		return;
+	}
+
+	value.value = array;
+	return;
+}
+
+clone_string :: proc(s: string, allocator: mem.Allocator) -> string {
+	n := len(s);
+	b := make([]byte, n+1, allocator);
+	copy(b, s);
+	b[n] = 0;
+	return string(b[:n]);
+}
+
+parse_object_key :: proc(p: ^Parser) -> (key: string, err: Error) {
+	tok := p.curr_token;
+	if p.spec == Specification.JSON5 {
+		if tok.kind == .String {
+			expect_token(p, .String);
+			key = unquote_string(tok, p.spec, p.allocator);
+			return;
+		} else if tok.kind == .Ident {
+			expect_token(p, .Ident);
+			key = clone_string(tok.text, p.allocator);
+			return;
+		}
+	}
+	if tok_err := expect_token(p, .String); tok_err != .None {
+		err = .Expected_String_For_Object_Key;
+		return;
+	}
+	key = unquote_string(tok, p.spec, p.allocator);
+	return;
+}
+
+parse_object :: proc(p: ^Parser) -> (value: Value, err: Error) {
+	value.pos = p.curr_token.pos;
+	defer value.end = token_end_pos(p.prev_token);
+
+	if err = expect_token(p, .Open_Brace); err != .None {
+		value.pos = p.curr_token.pos;
+		return;
+	}
+
+	obj: Object;
+	obj.allocator = p.allocator;
+	defer if err != .None {
+		for key, elem in obj {
+			delete(key, p.allocator);
+			destroy_value(elem);
+		}
+		delete(obj);
+	}
+
+	for p.curr_token.kind != .Close_Brace {
+		key: string;
+		key, err = parse_object_key(p);
+		if err != .None {
+			delete(key, p.allocator);
+			value.pos = p.curr_token.pos;
+			return;
+		}
+
+		if colon_err := expect_token(p, .Colon); colon_err != .None {
+			err = .Expected_Colon_After_Key;
+			value.pos = p.curr_token.pos;
+			return;
+		}
+
+		elem, elem_err := parse_value(p);
+		if elem_err != .None {
+			err = elem_err;
+			value.pos = p.curr_token.pos;
+			return;
+		}
+
+		if key in obj {
+			err = .Duplicate_Object_Key;
+			value.pos = p.curr_token.pos;
+			delete(key, p.allocator);
+			return;
+		}
+
+		obj[key] = elem;
+
+		if p.spec == Specification.JSON5 {
+			// Allow trailing commas
+			if allow_token(p, .Comma) {
+				continue;
+			}
+		} else {
+			// Disallow trailing commas
+			if allow_token(p, .Comma) {
+				continue;
+			} else {
+				break;
+			}
+		}
+	}
+
+	if err = expect_token(p, .Close_Brace); err != .None {
+		value.pos = p.curr_token.pos;
+		return;
+	}
+
+	value.value = obj;
+	return;
+}
+
+
+// IMPORTANT NOTE(bill): unquote_string assumes a mostly valid string
+unquote_string :: proc(token: Token, spec: Specification, allocator := context.allocator) -> string {
+	get_u2_rune :: proc(s: string) -> rune {
+		if len(s) < 4 || s[0] != '\\' || s[1] != 'x' {
+			return -1;
+		}
+
+		r: rune;
+		for c in s[2:4] {
+			x: rune;
+			switch c {
+			case '0'..='9': x = c - '0';
+			case 'a'..='f': x = c - 'a' + 10;
+			case 'A'..='F': x = c - 'A' + 10;
+			case: return -1;
+			}
+			r = r*16 + x;
+		}
+		return r;
+	}
+	get_u4_rune :: proc(s: string) -> rune {
+		if len(s) < 6 || s[0] != '\\' || s[1] != 'u' {
+			return -1;
+		}
+
+		r: rune;
+		for c in s[2:6] {
+			x: rune;
+			switch c {
+			case '0'..='9': x = c - '0';
+			case 'a'..='f': x = c - 'a' + 10;
+			case 'A'..='F': x = c - 'A' + 10;
+			case: return -1;
+			}
+			r = r*16 + x;
+		}
+		return r;
+	}
+
+	if token.kind != .String {
+		return "";
+	}
+	s := token.text;
+	if len(s) <= 2 {
+		return "";
+	}
+	quote := s[0];
+	if s[0] != s[len(s)-1] {
+		// Invalid string
+		return "";
+	}
+	s = s[1:len(s)-1];
+
+	i := 0;
+	for i < len(s) {
+		c := s[i];
+		if c == '\\' || c == quote || c < ' ' {
+			break;
+		}
+		if c < utf8.RUNE_SELF {
+			i += 1;
+			continue;
+		}
+		r, w := utf8.decode_rune_in_string(s);
+		if r == utf8.RUNE_ERROR && w == 1 {
+			break;
+		}
+		i += w;
+	}
+	if i == len(s) {
+		return clone_string(s, allocator);
+	}
+
+	b := make([]byte, len(s) + 2*utf8.UTF_MAX, allocator);
+	w := copy(b, s[0:i]);
+	loop: for i < len(s) {
+		c := s[i];
+		switch {
+		case c == '\\':
+			i += 1;
+			if i >= len(s) {
+				break loop;
+			}
+			switch s[i] {
+			case: break loop;
+			case '"',  '\'', '\\', '/':
+				b[w] = s[i];
+				i += 1;
+				w += 1;
+
+			case 'b':
+				b[w] = '\b';
+				i += 1;
+				w += 1;
+			case 'f':
+				b[w] = '\f';
+				i += 1;
+				w += 1;
+			case 'r':
+				b[w] = '\r';
+				i += 1;
+				w += 1;
+			case 't':
+				b[w] = '\t';
+				i += 1;
+				w += 1;
+			case 'n':
+				b[w] = '\n';
+				i += 1;
+				w += 1;
+			case 'u':
+				i -= 1; // Include the \u in the check for sanity sake
+				r := get_u4_rune(s[i:]);
+				if r < 0 {
+					break loop;
+				}
+				i += 6;
+
+				buf, buf_width := utf8.encode_rune(r);
+				copy(b[w:], buf[:buf_width]);
+				w += buf_width;
+
+
+			case '0':
+				if spec == Specification.JSON5 {
+					b[w] = '\x00';
+					i += 1;
+					w += 1;
+				} else {
+					break loop;
+				}
+			case 'v':
+				if spec == Specification.JSON5 {
+					b[w] = '\v';
+					i += 1;
+					w += 1;
+				} else {
+					break loop;
+				}
+
+			case 'x':
+				if spec == Specification.JSON5 {
+					i -= 1; // Include the \x in the check for sanity sake
+					r := get_u2_rune(s[i:]);
+					if r < 0 {
+						break loop;
+					}
+					i += 4;
+
+					buf, buf_width := utf8.encode_rune(r);
+					copy(b[w:], buf[:buf_width]);
+					w += buf_width;
+				} else {
+					break loop;
+				}
+			}
+
+		case c == quote, c < ' ':
+			break loop;
+
+		case c < utf8.RUNE_SELF:
+			b[w] = c;
+			i += 1;
+			w += 1;
+
+		case:
+			r, width := utf8.decode_rune_in_string(s[i:]);
+			i += width;
+
+			buf, buf_width := utf8.encode_rune(r);
+			assert(buf_width <= width);
+			copy(b[w:], buf[:buf_width]);
+			w += buf_width;
+		}
+	}
+
+	return string(b[:w]);
+}

core/encoding/json/tokenizer.odin

@@ -0,0 +1,484 @@
+package json
+
+import "core:unicode/utf8"
+
+Token :: struct {
+	using pos: Pos,
+	kind: Token_Kind,
+	text: string,
+}
+
+Token_Kind :: enum {
+	Invalid,
+	EOF,
+
+	Null,
+	False,
+	True,
+
+	Infinity,
+	NaN,
+
+	Ident,
+
+	Integer,
+	Float,
+	String,
+
+	Colon,
+	Comma,
+
+	Open_Brace,
+	Close_Brace,
+
+	Open_Bracket,
+	Close_Bracket,
+}
+
+Tokenizer :: struct {
+	using pos:        Pos,
+	data:             []byte,
+	r:                rune, // current rune
+	w:                int,  // current rune width in bytes
+	curr_line_offset: int,
+	spec:             Specification,
+	parse_integers:   bool,
+}
+
+
+
+make_tokenizer :: proc(data: []byte, spec := Specification.JSON, parse_integers := false) -> Tokenizer {
+	t := Tokenizer{pos = {line=1}, data = data, spec = spec, parse_integers = parse_integers};
+	next_rune(&t);
+	if t.r == utf8.RUNE_BOM {
+		next_rune(&t);
+	}
+	return t;
+}
+
+next_rune :: proc(t: ^Tokenizer) -> rune #no_bounds_check {
+	if t.offset >= len(t.data) {
+		return utf8.RUNE_EOF;
+	}
+	t.offset += t.w;
+	t.r, t.w = utf8.decode_rune(t.data[t.offset:]);
+	t.pos.column = t.offset - t.curr_line_offset;
+	return t.r;
+}
+
+
+get_token :: proc(t: ^Tokenizer) -> (token: Token, err: Error) {
+	skip_digits :: proc(t: ^Tokenizer) {
+		for t.offset < len(t.data) {
+			if '0' <= t.r && t.r <= '9' {
+				// Okay
+			} else {
+				return;
+			}
+			next_rune(t);
+		}
+	}
+	skip_hex_digits :: proc(t: ^Tokenizer) {
+		for t.offset < len(t.data) {
+			next_rune(t);
+			switch t.r {
+			case '0'..='9', 'a'..='f', 'A'..='F':
+				// Okay
+			case:
+				return;
+			}
+		}
+	}
+
+	scan_espace :: proc(t: ^Tokenizer) -> bool {
+		switch t.r {
+		case '"', '\'', '\\', '/', 'b', 'n', 'r', 't', 'f':
+			next_rune(t);
+			return true;
+		case 'u':
+			// Expect 4 hexadecimal digits
+			for i := 0; i < 4; i += 1 {
+				r := next_rune(t);
+				switch r {
+				case '0'..='9', 'a'..='f', 'A'..='F':
+					// Okay
+				case:
+					return false;
+				}
+			}
+		case:
+			// Ignore the next rune regardless
+			next_rune(t);
+		}
+		return false;
+	}
+
+	skip_whitespace :: proc(t: ^Tokenizer) -> rune {
+		loop: for t.offset < len(t.data) {
+			switch t.r {
+			case ' ', '\t', '\v', '\f', '\r':
+				next_rune(t);
+			case '\n':
+				t.line += 1;
+				t.curr_line_offset = t.offset;
+				t.pos.column = 1;
+				next_rune(t);
+			case:
+				if t.spec == .JSON5 {
+					switch t.r {
+					case 0x2028, 0x2029, 0xFEFF:
+						next_rune(t);
+						continue loop;
+					}
+				}
+				break loop;
+			}
+		}
+		return t.r;
+	}
+
+	skip_to_next_line :: proc(t: ^Tokenizer) {
+		for t.offset < len(t.data) {
+			r := next_rune(t);
+			if r == '\n' {
+				return;
+			}
+		}
+	}
+
+	skip_alphanum :: proc(t: ^Tokenizer) {
+		for t.offset < len(t.data) {
+			switch next_rune(t) {
+			case 'A'..='Z', 'a'..='z', '0'..='9', '_':
+				continue;
+			}
+
+			return;
+		}
+	}
+
+	skip_whitespace(t);
+
+	token.pos = t.pos;
+
+	token.kind = .Invalid;
+
+	curr_rune := t.r;
+	next_rune(t);
+
+	block: switch curr_rune {
+	case utf8.RUNE_ERROR:
+		err = .Illegal_Character;
+	case utf8.RUNE_EOF, '\x00':
+		token.kind = .EOF;
+		err = .EOF;
+
+	case 'A'..='Z', 'a'..='z', '_':
+		token.kind = .Ident;
+
+		skip_alphanum(t);
+
+		switch str := string(t.data[token.offset:t.offset]); str {
+		case "null":  token.kind = .Null;
+		case "false": token.kind = .False;
+		case "true":  token.kind = .True;
+		case:
+			if t.spec == .JSON5 {
+				switch str {
+				case "Infinity": token.kind = .Infinity;
+				case "NaN":      token.kind = .NaN;
+				}
+			}
+		}
+
+	case '+':
+		err = .Illegal_Character;
+		if t.spec != .JSON5 {
+			break;
+		}
+		fallthrough;
+
+	case '-':
+		switch t.r {
+		case '0'..='9':
+			// Okay
+		case:
+			// Illegal use of +/-
+			err = .Illegal_Character;
+
+			if t.spec == .JSON5 {
+				if t.r == 'I' || t.r == 'N' {
+					skip_alphanum(t);
+				}
+				switch string(t.data[token.offset:t.offset]) {
+				case "-Infinity": token.kind = .Infinity;
+				case "-NaN":      token.kind = .NaN;
+				}
+			}
+			break block;
+		}
+		fallthrough;
+
+	case '0'..='9':
+		token.kind = t.parse_integers ? .Integer : .Float;
+		if t.spec == .JSON5 { // Hexadecimal Numbers
+			if curr_rune == '0' && (t.r == 'x' || t.r == 'X') {
+				next_rune(t);
+				skip_hex_digits(t);
+				break;
+			}
+		}
+
+		skip_digits(t);
+
+		if t.r == '.' {
+			token.kind = .Float;
+			next_rune(t);
+			skip_digits(t);
+		}
+		if t.r == 'e' || t.r == 'E' {
+			switch r := next_rune(t); r {
+			case '+', '-':
+				next_rune(t);
+			}
+			skip_digits(t);
+		}
+
+		str := string(t.data[token.offset:t.offset]);
+		if !is_valid_number(str, t.spec) {
+			err = .Invalid_Number;
+		}
+
+	case '.':
+		err = .Illegal_Character;
+		if t.spec == .JSON5 { // Allow leading decimal point
+			skip_digits(t);
+			if t.r == 'e' || t.r == 'E' {
+				switch r := next_rune(t); r {
+				case '+', '-':
+					next_rune(t);
+				}
+				skip_digits(t);
+			}
+			str := string(t.data[token.offset:t.offset]);
+			if !is_valid_number(str, t.spec) {
+				err = .Invalid_Number;
+			}
+		}
+
+
+	case '\'':
+		err = .Illegal_Character;
+		if t.spec != .JSON5 {
+			break;
+		}
+		fallthrough;
+	case '"':
+		token.kind = .String;
+		quote := curr_rune;
+		for t.offset < len(t.data) {
+			r := t.r;
+			if r == '\n' || r < 0 {
+				err = .String_Not_Terminated;
+				break;
+			}
+			next_rune(t);
+			if r == quote {
+				break;
+			}
+			if r == '\\' {
+				scan_espace(t);
+			}
+		}
+
+		str := string(t.data[token.offset : t.offset]);
+		if !is_valid_string_literal(str, t.spec) {
+			err = .Invalid_String;
+		}
+
+
+	case ',': token.kind = .Comma;
+	case ':': token.kind = .Colon;
+	case '{': token.kind = .Open_Brace;
+	case '}': token.kind = .Close_Brace;
+	case '[': token.kind = .Open_Bracket;
+	case ']': token.kind = .Close_Bracket;
+
+	case '/':
+		err = .Illegal_Character;
+		if t.spec == .JSON5 {
+			switch t.r {
+			case '/':
+				// Single-line comments
+				skip_to_next_line(t);
+				return get_token(t);
+			case '*':
+				// None-nested multi-line comments
+				for t.offset < len(t.data) {
+					next_rune(t);
+					if t.r == '*' {
+						next_rune(t);
+						if t.r == '/' {
+							next_rune(t);
+							return get_token(t);
+						}
+					}
+				}
+				err = .EOF;
+			}
+		}
+
+	case: err = .Illegal_Character;
+	}
+
+	token.text = string(t.data[token.offset : t.offset]);
+
+	return;
+}
+
+
+
+is_valid_number :: proc(str: string, spec: Specification) -> bool {
+	s := str;
+	if s == "" {
+		return false;
+	}
+
+	if s[0] == '-' {
+		s = s[1:];
+		if s == "" {
+			return false;
+		}
+	} else if spec == .JSON5 {
+		if s[0] == '+' { // Allow positive sign
+			s = s[1:];
+			if s == "" {
+				return false;
+			}
+		}
+	}
+
+	switch s[0] {
+	case '0':
+		s = s[1:];
+	case '1'..='9':
+		s = s[1:];
+		for len(s) > 0 && '0' <= s[0] && s[0] <= '9' {
+			s = s[1:];
+		}
+	case '.':
+		if spec == .JSON5 { // Allow leading decimal point
+			s = s[1:];
+		} else {
+			return false;
+		}
+	case:
+		return false;
+	}
+
+	if spec == .JSON5 {
+		if len(s) == 1 && s[0] == '.' { // Allow trailing decimal point
+			return true;
+		}
+	}
+
+	if len(s) >= 2 && s[0] == '.' && '0' <= s[1] && s[1] <= '9' {
+		s = s[2:];
+		for len(s) > 0 && '0' <= s[0] && s[0] <= '9' {
+			s = s[1:];
+		}
+	}
+
+	if len(s) >= 2 && (s[0] == 'e' || s[0] == 'E') {
+		s = s[1:];
+		switch s[0] {
+		case '+', '-':
+			s = s[1:];
+			if s == "" {
+				return false;
+			}
+		}
+		for len(s) > 0 && '0' <= s[0] && s[0] <= '9' {
+			s = s[1:];
+		}
+	}
+
+	// The string should be empty now to be valid
+	return s == "";
+}
+
+is_valid_string_literal :: proc(str: string, spec: Specification) -> bool {
+	s := str;
+	if len(s) < 2 {
+		return false;
+	}
+	quote := s[0];
+	if s[0] != s[len(s)-1] {
+		return false;
+	}
+	if s[0] != '"' || s[len(s)-1] != '"' {
+		if spec == .JSON5 {
+			if s[0] != '\'' || s[len(s)-1] != '\'' {
+				return false;
+			}
+		} else {
+			return false;
+		}
+	}
+	s = s[1 : len(s)-1];
+
+	i := 0;
+	for i < len(s) {
+		c := s[i];
+		switch {
+		case c == '\\':
+			i += 1;
+			if i >= len(s) {
+				return false;
+			}
+			switch s[i] {
+			case '"', '\'', '\\', '/', 'b', 'n', 'r', 't', 'f':
+				i += 1;
+			case 'u':
+				if i >= len(s) {
+					return false;
+				}
+				hex := s[i+1:];
+				if len(hex) < 4 {
+					return false;
+				}
+				hex = hex[:4];
+				i += 5;
+
+				for j := 0; j < 4; j += 1 {
+					c2 := hex[j];
+					switch c2 {
+					case '0'..='9', 'a'..='z', 'A'..='Z':
+						// Okay
+					case:
+						return false;
+					}
+				}
+
+			case: return false;
+			}
+
+		case c == quote, c < ' ':
+			return false;
+
+		case c < utf8.RUNE_SELF:
+			i += 1;
+
+		case:
+			r, width := utf8.decode_rune_in_string(s[i:]);
+			if r == utf8.RUNE_ERROR && width == 1 {
+				return false;
+			}
+			i += width;
+		}
+	}
+	if i == len(s) {
+		return true;
+	}
+	return true;
+}

core/encoding/json/types.odin

@@ -0,0 +1,76 @@
+package json
+
+Specification :: enum {
+	JSON,
+	JSON5, // https://json5.org/
+	// MJSON, // http://bitsquid.blogspot.com/2009/09/json-configuration-data.html
+}
+
+Null    :: distinct rawptr;
+Integer :: i64;
+Float   :: f64;
+Boolean :: bool;
+String  :: string;
+Array   :: distinct [dynamic]Value;
+Object  :: distinct map[string]Value;
+
+Value :: struct {
+	pos, end: Pos,
+	value: union {
+		Null,
+		Integer,
+		Float,
+		Boolean,
+		String,
+		Array,
+		Object,
+	},
+}
+
+Pos :: struct {
+	offset: int,
+	line:   int,
+	column: int,
+}
+
+
+Error :: enum {
+	None,
+
+	EOF, // Not necessarily an error
+
+	// Tokenizing Errors
+	Illegal_Character,
+	Invalid_Number,
+	String_Not_Terminated,
+	Invalid_String,
+
+
+	// Parsing Errors
+	Unexpected_Token,
+	Expected_String_For_Object_Key,
+	Duplicate_Object_Key,
+	Expected_Colon_After_Key,
+}
+
+
+
+
+destroy_value :: proc(value: Value) {
+	#partial switch v in value.value {
+	case Object:
+		for key, elem in v {
+			delete(key);
+			destroy_value(elem);
+		}
+		delete(v);
+	case Array:
+		for elem in v {
+			destroy_value(elem);
+		}
+		delete(v);
+	case String:
+		delete(v);
+	}
+}
+

core/encoding/json/validator.odin

@@ -0,0 +1,122 @@
+package json
+
+import "core:mem"
+
+// NOTE(bill): is_valid will not check for duplicate keys
+is_valid :: proc(data: []byte, spec := Specification.JSON, parse_integers := false) -> bool {
+	p := make_parser(data, spec, parse_integers, mem.nil_allocator());
+	if p.spec == Specification.JSON5 {
+		return validate_value(&p);
+	}
+	return validate_object(&p);
+}
+
+validate_object_key :: proc(p: ^Parser) -> bool {
+	tok := p.curr_token;
+	if p.spec == Specification.JSON5 {
+		if tok.kind == .String {
+			expect_token(p, .String);
+			return true;
+		} else if tok.kind == .Ident {
+			expect_token(p, .Ident);
+			return true;
+		}
+	}
+	err := expect_token(p, .String);
+	return err == Error.None;
+}
+validate_object :: proc(p: ^Parser) -> bool {
+	if err := expect_token(p, .Open_Brace); err != Error.None {
+		return false;
+	}
+
+	for p.curr_token.kind != .Close_Brace {
+		if !validate_object_key(p) {
+			return false;
+		}
+		if colon_err := expect_token(p, .Colon); colon_err != Error.None {
+			return false;
+		}
+
+		if !validate_value(p) {
+			return false;
+		}
+
+		if p.spec == Specification.JSON5 {
+			// Allow trailing commas
+			if allow_token(p, .Comma) {
+				continue;
+			}
+		} else {
+			// Disallow trailing commas
+			if allow_token(p, .Comma) {
+				continue;
+			} else {
+				break;
+			}
+		}
+	}
+
+	if err := expect_token(p, .Close_Brace); err != Error.None {
+		return false;
+	}
+	return true;
+}
+
+validate_array :: proc(p: ^Parser) -> bool {
+	if err := expect_token(p, .Open_Bracket); err != Error.None {
+		return false;
+	}
+
+	for p.curr_token.kind != .Close_Bracket {
+		if !validate_value(p) {
+			return false;
+		}
+
+		// Disallow trailing commas for the time being
+		if allow_token(p, .Comma) {
+			continue;
+		} else {
+			break;
+		}
+	}
+
+	if err := expect_token(p, .Close_Bracket); err != Error.None {
+		return false;
+	}
+
+	return true;
+}
+
+validate_value :: proc(p: ^Parser) -> bool {
+	token := p.curr_token;
+
+	#partial switch token.kind {
+	case .Null, .False, .True:
+		advance_token(p);
+		return true;
+	case .Integer, .Float:
+		advance_token(p);
+		return true;
+	case .String:
+		advance_token(p);
+		return is_valid_string_literal(token.text, p.spec);
+
+	case .Open_Brace:
+		return validate_object(p);
+
+	case .Open_Bracket:
+		return validate_array(p);
+
+	case:
+		if p.spec == Specification.JSON5 {
+			#partial switch token.kind {
+			case .Infinity, .NaN:
+				advance_token(p);
+				return true;
+			}
+		}
+	}
+
+	return false;
+}

core/hash.odin

@@ -1,346 +0,0 @@
-import "core:mem.odin"
-
-adler32 :: proc(data: []u8) -> u32 {
-	ADLER_CONST :: 65521;
-	a, b: u32 = 1, 0;
-	for x in data {
-		a = (a + u32(x)) % ADLER_CONST;
-		b = (b + a) % ADLER_CONST;
-	}
-	return (b << 16) | a;
-}
-
-crc32 :: proc(data: []u8) -> u32 {
-	result := ~u32(0);
-	for b in data {
-		result = result>>8 ~ _crc32_table[(result ~ u32(b)) & 0xff];
-	}
-	return ~result;
-}
-crc64 :: proc(data: []u8) -> u64 {
-	result := ~u64(0);
-	for b in data {
-		result = result>>8 ~ _crc64_table[(result ~ u64(b)) & 0xff];
-	}
-	return ~result;
-}
-
-fnv32 :: proc(data: []u8) -> u32 {
-	h: u32 = 0x811c9dc5;
-	for b in data {
-		h = (h * 0x01000193) ~ u32(b);
-	}
-	return h;
-}
-
-fnv64 :: proc(data: []u8) -> u64 {
-	h: u64 = 0xcbf29ce484222325;
-	for b in data {
-		h = (h * 0x100000001b3) ~ u64(b);
-	}
-	return h;
-}
-
-fnv32a :: proc(data: []u8) -> u32 {
-	h: u32 = 0x811c9dc5;
-	for b in data {
-		h = (h ~ u32(b)) * 0x01000193;
-	}
-	return h;
-}
-
-fnv64a :: proc(data: []u8) -> u64 {
-	h: u64 = 0xcbf29ce484222325;
-	for b in data {
-		h = (h ~ u64(b)) * 0x100000001b3;
-	}
-	return h;
-}
-
-murmur32 :: proc(data: []u8) -> u32 {
-	c1_32: u32 : 0xcc9e2d51;
-	c2_32: u32 : 0x1b873593;
-
-	h1: u32 = 0;
-	nblocks := len(data)/4;
-	p := &data[0];
-	p1 := p + 4*nblocks;
-
-	for ; p < p1; p += 4 {
-		k1 := (cast(^u32)p)^;
-
-		k1 *= c1_32;
-		k1 = (k1 << 15) | (k1 >> 17);
-		k1 *= c2_32;
-
-		h1 ~= k1;
-		h1 = (h1 << 13) | (h1 >> 19);
-		h1 = h1*5 + 0xe6546b64;
-	}
-
-	tail := data[nblocks*4 ..];
-	k1: u32;
-	switch len(tail)&3 {
-	case 3:
-		k1 ~= u32(tail[2]) << 16;
-		fallthrough;
-	case 2:
-		k1 ~= u32(tail[2]) << 8;
-		fallthrough;
-	case 1:
-		k1 ~= u32(tail[0]);
-		k1 *= c1_32;
-		k1 = (k1 << 15) | (k1 >> 17) ;
-		k1 *= c2_32;
-		h1 ~= k1;
-	}
-
-	h1 ~= u32(len(data));
-
-	h1 ~= h1 >> 16;
-	h1 *= 0x85ebca6b;
-	h1 ~= h1 >> 13;
-	h1 *= 0xc2b2ae35;
-	h1 ~= h1 >> 16;
-
-	return h1;
-}
-
-murmur64 :: proc(data: []u8) -> u64 {
-	SEED :: 0x9747b28c;
-
-	when size_of(int) == 8 {
-		m :: 0xc6a4a7935bd1e995;
-		r :: 47;
-
-		h: u64 = SEED ~ (u64(len(data)) * m);
-		data64 := mem.slice_ptr(cast(^u64)&data[0], len(data)/size_of(u64));
-
-		for _, i in data64 {
-			k := data64[i];
-
-			k *= m;
-			k ~= k>>r;
-			k *= m;
-
-			h ~= k;
-			h *= m;
-		}
-
-		switch len(data)&7 {
-		case 7: h ~= u64(data[6]) << 48; fallthrough;
-		case 6: h ~= u64(data[5]) << 40; fallthrough;
-		case 5: h ~= u64(data[4]) << 32; fallthrough;
-		case 4: h ~= u64(data[3]) << 24; fallthrough;
-		case 3: h ~= u64(data[2]) << 16; fallthrough;
-		case 2: h ~= u64(data[1]) << 8;  fallthrough;
-		case 1:
-			h ~= u64(data[0]);
-			h *= m;
-		}
-
-		h ~= h>>r;
-		h *= m;
-		h ~= h>>r;
-
-		return h;
-	} else {
-		m :: 0x5bd1e995;
-		r :: 24;
-
-		h1 := u32(SEED) ~ u32(len(data));
-		h2 := u32(SEED) >> 32;
-		data32 := mem.slice_ptr(cast(^u32)&data[0], len(data)/size_of(u32));
-		len := len(data);
-		i := 0;
-
-		for len >= 8 {
-			k1, k2: u32;
-			k1 = data32[i]; i += 1;
-			k1 *= m;
-			k1 ~= k1>>r;
-			k1 *= m;
-			h1 *= m;
-			h1 ~= k1;
-			len -= 4;
-
-			k2 = data32[i]; i += 1;
-			k2 *= m;
-			k2 ~= k2>>r;
-			k2 *= m;
-			h2 *= m;
-			h2 ~= k2;
-			len -= 4;
-		}
-
-		if len >= 4 {
-			k1: u32;
-			k1 = data32[i]; i += 1;
-			k1 *= m;
-			k1 ~= k1>>r;
-			k1 *= m;
-			h1 *= m;
-			h1 ~= k1;
-			len -= 4;
-		}
-
-		// TODO(bill): Fix this
-		#no_bounds_check data8 := slice_to_bytes(data32[i..])[..3];
-		switch len {
-		case 3:
-			h2 ~= u32(data8[2]) << 16;
-			fallthrough;
-		case 2:
-			h2 ~= u32(data8[1]) << 8;
-			fallthrough;
-		case 1:
-			h2 ~= u32(data8[0]);
-			h2 *= m;
-		}
-
-		h1 ~= h2>>18;
-		h1 *= m;
-		h2 ~= h1>>22;
-		h2 *= m;
-		h1 ~= h2>>17;
-		h1 *= m;
-		h2 ~= h1>>19;
-		h2 *= m;
-
-		return u64(h1)<<32 | u64(h2);
-	}
-}
-
-
-_crc32_table := [256]u32{
-	0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
-	0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
-	0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
-	0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
-	0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
-	0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
-	0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
-	0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
-	0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
-	0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
-	0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
-	0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
-	0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
-	0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
-	0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
-	0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
-	0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
-	0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
-	0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
-	0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
-	0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
-	0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
-	0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
-	0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
-	0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
-	0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
-	0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
-	0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
-	0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
-	0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
-	0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
-	0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
-	0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
-	0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
-	0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
-	0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
-	0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
-	0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
-	0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
-	0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
-	0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
-	0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
-	0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
-	0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
-	0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
-	0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
-	0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
-	0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
-	0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
-	0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
-	0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
-	0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
-	0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
-	0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
-	0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
-	0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
-	0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
-	0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
-	0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
-	0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
-	0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
-	0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
-	0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
-	0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
-};
-_crc64_table := [256]u64{
-	0x0000000000000000, 0x42f0e1eba9ea3693, 0x85e1c3d753d46d26, 0xc711223cfa3e5bb5,
-	0x493366450e42ecdf, 0x0bc387aea7a8da4c, 0xccd2a5925d9681f9, 0x8e224479f47cb76a,
-	0x9266cc8a1c85d9be, 0xd0962d61b56fef2d, 0x17870f5d4f51b498, 0x5577eeb6e6bb820b,
-	0xdb55aacf12c73561, 0x99a54b24bb2d03f2, 0x5eb4691841135847, 0x1c4488f3e8f96ed4,
-	0x663d78ff90e185ef, 0x24cd9914390bb37c, 0xe3dcbb28c335e8c9, 0xa12c5ac36adfde5a,
-	0x2f0e1eba9ea36930, 0x6dfeff5137495fa3, 0xaaefdd6dcd770416, 0xe81f3c86649d3285,
-	0xf45bb4758c645c51, 0xb6ab559e258e6ac2, 0x71ba77a2dfb03177, 0x334a9649765a07e4,
-	0xbd68d2308226b08e, 0xff9833db2bcc861d, 0x388911e7d1f2dda8, 0x7a79f00c7818eb3b,
-	0xcc7af1ff21c30bde, 0x8e8a101488293d4d, 0x499b3228721766f8, 0x0b6bd3c3dbfd506b,
-	0x854997ba2f81e701, 0xc7b97651866bd192, 0x00a8546d7c558a27, 0x4258b586d5bfbcb4,
-	0x5e1c3d753d46d260, 0x1cecdc9e94ace4f3, 0xdbfdfea26e92bf46, 0x990d1f49c77889d5,
-	0x172f5b3033043ebf, 0x55dfbadb9aee082c, 0x92ce98e760d05399, 0xd03e790cc93a650a,
-	0xaa478900b1228e31, 0xe8b768eb18c8b8a2, 0x2fa64ad7e2f6e317, 0x6d56ab3c4b1cd584,
-	0xe374ef45bf6062ee, 0xa1840eae168a547d, 0x66952c92ecb40fc8, 0x2465cd79455e395b,
-	0x3821458aada7578f, 0x7ad1a461044d611c, 0xbdc0865dfe733aa9, 0xff3067b657990c3a,
-	0x711223cfa3e5bb50, 0x33e2c2240a0f8dc3, 0xf4f3e018f031d676, 0xb60301f359dbe0e5,
-	0xda050215ea6c212f, 0x98f5e3fe438617bc, 0x5fe4c1c2b9b84c09, 0x1d14202910527a9a,
-	0x93366450e42ecdf0, 0xd1c685bb4dc4fb63, 0x16d7a787b7faa0d6, 0x5427466c1e109645,
-	0x4863ce9ff6e9f891, 0x0a932f745f03ce02, 0xcd820d48a53d95b7, 0x8f72eca30cd7a324,
-	0x0150a8daf8ab144e, 0x43a04931514122dd, 0x84b16b0dab7f7968, 0xc6418ae602954ffb,
-	0xbc387aea7a8da4c0, 0xfec89b01d3679253, 0x39d9b93d2959c9e6, 0x7b2958d680b3ff75,
-	0xf50b1caf74cf481f, 0xb7fbfd44dd257e8c, 0x70eadf78271b2539, 0x321a3e938ef113aa,
-	0x2e5eb66066087d7e, 0x6cae578bcfe24bed, 0xabbf75b735dc1058, 0xe94f945c9c3626cb,
-	0x676dd025684a91a1, 0x259d31cec1a0a732, 0xe28c13f23b9efc87, 0xa07cf2199274ca14,
-	0x167ff3eacbaf2af1, 0x548f120162451c62, 0x939e303d987b47d7, 0xd16ed1d631917144,
-	0x5f4c95afc5edc62e, 0x1dbc74446c07f0bd, 0xdaad56789639ab08, 0x985db7933fd39d9b,
-	0x84193f60d72af34f, 0xc6e9de8b7ec0c5dc, 0x01f8fcb784fe9e69, 0x43081d5c2d14a8fa,
-	0xcd2a5925d9681f90, 0x8fdab8ce70822903, 0x48cb9af28abc72b6, 0x0a3b7b1923564425,
-	0x70428b155b4eaf1e, 0x32b26afef2a4998d, 0xf5a348c2089ac238, 0xb753a929a170f4ab,
-	0x3971ed50550c43c1, 0x7b810cbbfce67552, 0xbc902e8706d82ee7, 0xfe60cf6caf321874,
-	0xe224479f47cb76a0, 0xa0d4a674ee214033, 0x67c58448141f1b86, 0x253565a3bdf52d15,
-	0xab1721da49899a7f, 0xe9e7c031e063acec, 0x2ef6e20d1a5df759, 0x6c0603e6b3b7c1ca,
-	0xf6fae5c07d3274cd, 0xb40a042bd4d8425e, 0x731b26172ee619eb, 0x31ebc7fc870c2f78,
-	0xbfc9838573709812, 0xfd39626eda9aae81, 0x3a28405220a4f534, 0x78d8a1b9894ec3a7,
-	0x649c294a61b7ad73, 0x266cc8a1c85d9be0, 0xe17dea9d3263c055, 0xa38d0b769b89f6c6,
-	0x2daf4f0f6ff541ac, 0x6f5faee4c61f773f, 0xa84e8cd83c212c8a, 0xeabe6d3395cb1a19,
-	0x90c79d3fedd3f122, 0xd2377cd44439c7b1, 0x15265ee8be079c04, 0x57d6bf0317edaa97,
-	0xd9f4fb7ae3911dfd, 0x9b041a914a7b2b6e, 0x5c1538adb04570db, 0x1ee5d94619af4648,
-	0x02a151b5f156289c, 0x4051b05e58bc1e0f, 0x87409262a28245ba, 0xc5b073890b687329,
-	0x4b9237f0ff14c443, 0x0962d61b56fef2d0, 0xce73f427acc0a965, 0x8c8315cc052a9ff6,
-	0x3a80143f5cf17f13, 0x7870f5d4f51b4980, 0xbf61d7e80f251235, 0xfd913603a6cf24a6,
-	0x73b3727a52b393cc, 0x31439391fb59a55f, 0xf652b1ad0167feea, 0xb4a25046a88dc879,
-	0xa8e6d8b54074a6ad, 0xea16395ee99e903e, 0x2d071b6213a0cb8b, 0x6ff7fa89ba4afd18,
-	0xe1d5bef04e364a72, 0xa3255f1be7dc7ce1, 0x64347d271de22754, 0x26c49cccb40811c7,
-	0x5cbd6cc0cc10fafc, 0x1e4d8d2b65facc6f, 0xd95caf179fc497da, 0x9bac4efc362ea149,
-	0x158e0a85c2521623, 0x577eeb6e6bb820b0, 0x906fc95291867b05, 0xd29f28b9386c4d96,
-	0xcedba04ad0952342, 0x8c2b41a1797f15d1, 0x4b3a639d83414e64, 0x09ca82762aab78f7,
-	0x87e8c60fded7cf9d, 0xc51827e4773df90e, 0x020905d88d03a2bb, 0x40f9e43324e99428,
-	0x2cffe7d5975e55e2, 0x6e0f063e3eb46371, 0xa91e2402c48a38c4, 0xebeec5e96d600e57,
-	0x65cc8190991cb93d, 0x273c607b30f68fae, 0xe02d4247cac8d41b, 0xa2dda3ac6322e288,
-	0xbe992b5f8bdb8c5c, 0xfc69cab42231bacf, 0x3b78e888d80fe17a, 0x7988096371e5d7e9,
-	0xf7aa4d1a85996083, 0xb55aacf12c735610, 0x724b8ecdd64d0da5, 0x30bb6f267fa73b36,
-	0x4ac29f2a07bfd00d, 0x08327ec1ae55e69e, 0xcf235cfd546bbd2b, 0x8dd3bd16fd818bb8,
-	0x03f1f96f09fd3cd2, 0x41011884a0170a41, 0x86103ab85a2951f4, 0xc4e0db53f3c36767,
-	0xd8a453a01b3a09b3, 0x9a54b24bb2d03f20, 0x5d45907748ee6495, 0x1fb5719ce1045206,
-	0x919735e51578e56c, 0xd367d40ebc92d3ff, 0x1476f63246ac884a, 0x568617d9ef46bed9,
-	0xe085162ab69d5e3c, 0xa275f7c11f7768af, 0x6564d5fde549331a, 0x279434164ca30589,
-	0xa9b6706fb8dfb2e3, 0xeb46918411358470, 0x2c57b3b8eb0bdfc5, 0x6ea7525342e1e956,
-	0x72e3daa0aa188782, 0x30133b4b03f2b111, 0xf7021977f9cceaa4, 0xb5f2f89c5026dc37,
-	0x3bd0bce5a45a6b5d, 0x79205d0e0db05dce, 0xbe317f32f78e067b, 0xfcc19ed95e6430e8,
-	0x86b86ed5267cdbd3, 0xc4488f3e8f96ed40, 0x0359ad0275a8b6f5, 0x41a94ce9dc428066,
-	0xcf8b0890283e370c, 0x8d7be97b81d4019f, 0x4a6acb477bea5a2a, 0x089a2aacd2006cb9,
-	0x14dea25f3af9026d, 0x562e43b4931334fe, 0x913f6188692d6f4b, 0xd3cf8063c0c759d8,
-	0x5dedc41a34bbeeb2, 0x1f1d25f19d51d821, 0xd80c07cd676f8394, 0x9afce626ce85b507,
-};

core/hash/crc.odin

@@ -0,0 +1,78 @@
+package hash
+
+
+@(optimization_mode="speed")
+crc64 :: proc(data: []byte, seed := u32(0)) -> u64 #no_bounds_check {
+	result := ~u64(seed);
+	 #no_bounds_check for b in data {
+		result = result>>8 ~ _crc64_table[(result ~ u64(b)) & 0xff];
+	}
+	return ~result;
+}
+
+@private _crc64_table := [256]u64{
+	0x0000000000000000, 0x42f0e1eba9ea3693, 0x85e1c3d753d46d26, 0xc711223cfa3e5bb5,
+	0x493366450e42ecdf, 0x0bc387aea7a8da4c, 0xccd2a5925d9681f9, 0x8e224479f47cb76a,
+	0x9266cc8a1c85d9be, 0xd0962d61b56fef2d, 0x17870f5d4f51b498, 0x5577eeb6e6bb820b,
+	0xdb55aacf12c73561, 0x99a54b24bb2d03f2, 0x5eb4691841135847, 0x1c4488f3e8f96ed4,
+	0x663d78ff90e185ef, 0x24cd9914390bb37c, 0xe3dcbb28c335e8c9, 0xa12c5ac36adfde5a,
+	0x2f0e1eba9ea36930, 0x6dfeff5137495fa3, 0xaaefdd6dcd770416, 0xe81f3c86649d3285,
+	0xf45bb4758c645c51, 0xb6ab559e258e6ac2, 0x71ba77a2dfb03177, 0x334a9649765a07e4,
+	0xbd68d2308226b08e, 0xff9833db2bcc861d, 0x388911e7d1f2dda8, 0x7a79f00c7818eb3b,
+	0xcc7af1ff21c30bde, 0x8e8a101488293d4d, 0x499b3228721766f8, 0x0b6bd3c3dbfd506b,
+	0x854997ba2f81e701, 0xc7b97651866bd192, 0x00a8546d7c558a27, 0x4258b586d5bfbcb4,
+	0x5e1c3d753d46d260, 0x1cecdc9e94ace4f3, 0xdbfdfea26e92bf46, 0x990d1f49c77889d5,
+	0x172f5b3033043ebf, 0x55dfbadb9aee082c, 0x92ce98e760d05399, 0xd03e790cc93a650a,
+	0xaa478900b1228e31, 0xe8b768eb18c8b8a2, 0x2fa64ad7e2f6e317, 0x6d56ab3c4b1cd584,
+	0xe374ef45bf6062ee, 0xa1840eae168a547d, 0x66952c92ecb40fc8, 0x2465cd79455e395b,
+	0x3821458aada7578f, 0x7ad1a461044d611c, 0xbdc0865dfe733aa9, 0xff3067b657990c3a,
+	0x711223cfa3e5bb50, 0x33e2c2240a0f8dc3, 0xf4f3e018f031d676, 0xb60301f359dbe0e5,
+	0xda050215ea6c212f, 0x98f5e3fe438617bc, 0x5fe4c1c2b9b84c09, 0x1d14202910527a9a,
+	0x93366450e42ecdf0, 0xd1c685bb4dc4fb63, 0x16d7a787b7faa0d6, 0x5427466c1e109645,
+	0x4863ce9ff6e9f891, 0x0a932f745f03ce02, 0xcd820d48a53d95b7, 0x8f72eca30cd7a324,
+	0x0150a8daf8ab144e, 0x43a04931514122dd, 0x84b16b0dab7f7968, 0xc6418ae602954ffb,
+	0xbc387aea7a8da4c0, 0xfec89b01d3679253, 0x39d9b93d2959c9e6, 0x7b2958d680b3ff75,
+	0xf50b1caf74cf481f, 0xb7fbfd44dd257e8c, 0x70eadf78271b2539, 0x321a3e938ef113aa,
+	0x2e5eb66066087d7e, 0x6cae578bcfe24bed, 0xabbf75b735dc1058, 0xe94f945c9c3626cb,
+	0x676dd025684a91a1, 0x259d31cec1a0a732, 0xe28c13f23b9efc87, 0xa07cf2199274ca14,
+	0x167ff3eacbaf2af1, 0x548f120162451c62, 0x939e303d987b47d7, 0xd16ed1d631917144,
+	0x5f4c95afc5edc62e, 0x1dbc74446c07f0bd, 0xdaad56789639ab08, 0x985db7933fd39d9b,
+	0x84193f60d72af34f, 0xc6e9de8b7ec0c5dc, 0x01f8fcb784fe9e69, 0x43081d5c2d14a8fa,
+	0xcd2a5925d9681f90, 0x8fdab8ce70822903, 0x48cb9af28abc72b6, 0x0a3b7b1923564425,
+	0x70428b155b4eaf1e, 0x32b26afef2a4998d, 0xf5a348c2089ac238, 0xb753a929a170f4ab,
+	0x3971ed50550c43c1, 0x7b810cbbfce67552, 0xbc902e8706d82ee7, 0xfe60cf6caf321874,
+	0xe224479f47cb76a0, 0xa0d4a674ee214033, 0x67c58448141f1b86, 0x253565a3bdf52d15,
+	0xab1721da49899a7f, 0xe9e7c031e063acec, 0x2ef6e20d1a5df759, 0x6c0603e6b3b7c1ca,
+	0xf6fae5c07d3274cd, 0xb40a042bd4d8425e, 0x731b26172ee619eb, 0x31ebc7fc870c2f78,
+	0xbfc9838573709812, 0xfd39626eda9aae81, 0x3a28405220a4f534, 0x78d8a1b9894ec3a7,
+	0x649c294a61b7ad73, 0x266cc8a1c85d9be0, 0xe17dea9d3263c055, 0xa38d0b769b89f6c6,
+	0x2daf4f0f6ff541ac, 0x6f5faee4c61f773f, 0xa84e8cd83c212c8a, 0xeabe6d3395cb1a19,
+	0x90c79d3fedd3f122, 0xd2377cd44439c7b1, 0x15265ee8be079c04, 0x57d6bf0317edaa97,
+	0xd9f4fb7ae3911dfd, 0x9b041a914a7b2b6e, 0x5c1538adb04570db, 0x1ee5d94619af4648,
+	0x02a151b5f156289c, 0x4051b05e58bc1e0f, 0x87409262a28245ba, 0xc5b073890b687329,
+	0x4b9237f0ff14c443, 0x0962d61b56fef2d0, 0xce73f427acc0a965, 0x8c8315cc052a9ff6,
+	0x3a80143f5cf17f13, 0x7870f5d4f51b4980, 0xbf61d7e80f251235, 0xfd913603a6cf24a6,
+	0x73b3727a52b393cc, 0x31439391fb59a55f, 0xf652b1ad0167feea, 0xb4a25046a88dc879,
+	0xa8e6d8b54074a6ad, 0xea16395ee99e903e, 0x2d071b6213a0cb8b, 0x6ff7fa89ba4afd18,
+	0xe1d5bef04e364a72, 0xa3255f1be7dc7ce1, 0x64347d271de22754, 0x26c49cccb40811c7,
+	0x5cbd6cc0cc10fafc, 0x1e4d8d2b65facc6f, 0xd95caf179fc497da, 0x9bac4efc362ea149,
+	0x158e0a85c2521623, 0x577eeb6e6bb820b0, 0x906fc95291867b05, 0xd29f28b9386c4d96,
+	0xcedba04ad0952342, 0x8c2b41a1797f15d1, 0x4b3a639d83414e64, 0x09ca82762aab78f7,
+	0x87e8c60fded7cf9d, 0xc51827e4773df90e, 0x020905d88d03a2bb, 0x40f9e43324e99428,
+	0x2cffe7d5975e55e2, 0x6e0f063e3eb46371, 0xa91e2402c48a38c4, 0xebeec5e96d600e57,
+	0x65cc8190991cb93d, 0x273c607b30f68fae, 0xe02d4247cac8d41b, 0xa2dda3ac6322e288,
+	0xbe992b5f8bdb8c5c, 0xfc69cab42231bacf, 0x3b78e888d80fe17a, 0x7988096371e5d7e9,
+	0xf7aa4d1a85996083, 0xb55aacf12c735610, 0x724b8ecdd64d0da5, 0x30bb6f267fa73b36,
+	0x4ac29f2a07bfd00d, 0x08327ec1ae55e69e, 0xcf235cfd546bbd2b, 0x8dd3bd16fd818bb8,
+	0x03f1f96f09fd3cd2, 0x41011884a0170a41, 0x86103ab85a2951f4, 0xc4e0db53f3c36767,
+	0xd8a453a01b3a09b3, 0x9a54b24bb2d03f20, 0x5d45907748ee6495, 0x1fb5719ce1045206,
+	0x919735e51578e56c, 0xd367d40ebc92d3ff, 0x1476f63246ac884a, 0x568617d9ef46bed9,
+	0xe085162ab69d5e3c, 0xa275f7c11f7768af, 0x6564d5fde549331a, 0x279434164ca30589,
+	0xa9b6706fb8dfb2e3, 0xeb46918411358470, 0x2c57b3b8eb0bdfc5, 0x6ea7525342e1e956,
+	0x72e3daa0aa188782, 0x30133b4b03f2b111, 0xf7021977f9cceaa4, 0xb5f2f89c5026dc37,
+	0x3bd0bce5a45a6b5d, 0x79205d0e0db05dce, 0xbe317f32f78e067b, 0xfcc19ed95e6430e8,
+	0x86b86ed5267cdbd3, 0xc4488f3e8f96ed40, 0x0359ad0275a8b6f5, 0x41a94ce9dc428066,
+	0xcf8b0890283e370c, 0x8d7be97b81d4019f, 0x4a6acb477bea5a2a, 0x089a2aacd2006cb9,
+	0x14dea25f3af9026d, 0x562e43b4931334fe, 0x913f6188692d6f4b, 0xd3cf8063c0c759d8,
+	0x5dedc41a34bbeeb2, 0x1f1d25f19d51d821, 0xd80c07cd676f8394, 0x9afce626ce85b507,
+};

core/hash/crc32.odin

@@ -0,0 +1,401 @@
+package hash
+
+import "intrinsics"
+
+@(optimization_mode="speed")
+crc32 :: proc(data: []byte, seed := u32(0)) -> u32 #no_bounds_check {
+	crc := ~seed;
+	buffer := raw_data(data);
+	length := len(data);
+
+	for length != 0 && uintptr(buffer) & 7 != 0 {
+		crc = crc32_table[0][byte(crc) ~ buffer^] ~ (crc >> 8);
+		buffer = intrinsics.ptr_offset(buffer, 1);
+		length -= 1;
+	}
+
+	for length >= 8 {
+		buf := (^[8]byte)(buffer);
+		word := u32((^u32le)(buffer)^);
+		crc ~= word;
+
+		crc = crc32_table[7][crc & 0xff] ~
+		      crc32_table[6][(crc >> 8) & 0xff] ~
+		      crc32_table[5][(crc >> 16) & 0xff] ~
+		      crc32_table[4][(crc >> 24) & 0xff] ~
+		      crc32_table[3][buf[4]] ~
+		      crc32_table[2][buf[5]] ~
+		      crc32_table[1][buf[6]] ~
+		      crc32_table[0][buf[7]];
+
+		buffer = intrinsics.ptr_offset(buffer, 8);
+		length -= 8;
+	}
+
+
+	for length != 0 {
+		crc = crc32_table[0][byte(crc) ~ buffer^] ~ (crc >> 8);
+		buffer = intrinsics.ptr_offset(buffer, 1);
+		length -= 1;
+	}
+
+
+	return ~crc;
+}
+
+@(private)
+crc32_table := [8][256]u32{
+	{
+		0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+		0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+		0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+		0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+		0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+		0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+		0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+		0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+		0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+		0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+		0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+		0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+		0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+		0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+		0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+		0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+		0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+		0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+		0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+		0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+		0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+		0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+		0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+		0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+		0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+		0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+		0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+		0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+		0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+		0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+		0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+		0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
+	},
+	{
+		0x00000000, 0x191b3141, 0x32366282, 0x2b2d53c3, 0x646cc504, 0x7d77f445, 0x565aa786, 0x4f4196c7,
+		0xc8d98a08, 0xd1c2bb49, 0xfaefe88a, 0xe3f4d9cb, 0xacb54f0c, 0xb5ae7e4d, 0x9e832d8e, 0x87981ccf,
+		0x4ac21251, 0x53d92310, 0x78f470d3, 0x61ef4192, 0x2eaed755, 0x37b5e614, 0x1c98b5d7, 0x05838496,
+		0x821b9859, 0x9b00a918, 0xb02dfadb, 0xa936cb9a, 0xe6775d5d, 0xff6c6c1c, 0xd4413fdf, 0xcd5a0e9e,
+		0x958424a2, 0x8c9f15e3, 0xa7b24620, 0xbea97761, 0xf1e8e1a6, 0xe8f3d0e7, 0xc3de8324, 0xdac5b265,
+		0x5d5daeaa, 0x44469feb, 0x6f6bcc28, 0x7670fd69, 0x39316bae, 0x202a5aef, 0x0b07092c, 0x121c386d,
+		0xdf4636f3, 0xc65d07b2, 0xed705471, 0xf46b6530, 0xbb2af3f7, 0xa231c2b6, 0x891c9175, 0x9007a034,
+		0x179fbcfb, 0x0e848dba, 0x25a9de79, 0x3cb2ef38, 0x73f379ff, 0x6ae848be, 0x41c51b7d, 0x58de2a3c,
+		0xf0794f05, 0xe9627e44, 0xc24f2d87, 0xdb541cc6, 0x94158a01, 0x8d0ebb40, 0xa623e883, 0xbf38d9c2,
+		0x38a0c50d, 0x21bbf44c, 0x0a96a78f, 0x138d96ce, 0x5ccc0009, 0x45d73148, 0x6efa628b, 0x77e153ca,
+		0xbabb5d54, 0xa3a06c15, 0x888d3fd6, 0x91960e97, 0xded79850, 0xc7cca911, 0xece1fad2, 0xf5facb93,
+		0x7262d75c, 0x6b79e61d, 0x4054b5de, 0x594f849f, 0x160e1258, 0x0f152319, 0x243870da, 0x3d23419b,
+		0x65fd6ba7, 0x7ce65ae6, 0x57cb0925, 0x4ed03864, 0x0191aea3, 0x188a9fe2, 0x33a7cc21, 0x2abcfd60,
+		0xad24e1af, 0xb43fd0ee, 0x9f12832d, 0x8609b26c, 0xc94824ab, 0xd05315ea, 0xfb7e4629, 0xe2657768,
+		0x2f3f79f6, 0x362448b7, 0x1d091b74, 0x04122a35, 0x4b53bcf2, 0x52488db3, 0x7965de70, 0x607eef31,
+		0xe7e6f3fe, 0xfefdc2bf, 0xd5d0917c, 0xcccba03d, 0x838a36fa, 0x9a9107bb, 0xb1bc5478, 0xa8a76539,
+		0x3b83984b, 0x2298a90a, 0x09b5fac9, 0x10aecb88, 0x5fef5d4f, 0x46f46c0e, 0x6dd93fcd, 0x74c20e8c,
+		0xf35a1243, 0xea412302, 0xc16c70c1, 0xd8774180, 0x9736d747, 0x8e2de606, 0xa500b5c5, 0xbc1b8484,
+		0x71418a1a, 0x685abb5b, 0x4377e898, 0x5a6cd9d9, 0x152d4f1e, 0x0c367e5f, 0x271b2d9c, 0x3e001cdd,
+		0xb9980012, 0xa0833153, 0x8bae6290, 0x92b553d1, 0xddf4c516, 0xc4eff457, 0xefc2a794, 0xf6d996d5,
+		0xae07bce9, 0xb71c8da8, 0x9c31de6b, 0x852aef2a, 0xca6b79ed, 0xd37048ac, 0xf85d1b6f, 0xe1462a2e,
+		0x66de36e1, 0x7fc507a0, 0x54e85463, 0x4df36522, 0x02b2f3e5, 0x1ba9c2a4, 0x30849167, 0x299fa026,
+		0xe4c5aeb8, 0xfdde9ff9, 0xd6f3cc3a, 0xcfe8fd7b, 0x80a96bbc, 0x99b25afd, 0xb29f093e, 0xab84387f,
+		0x2c1c24b0, 0x350715f1, 0x1e2a4632, 0x07317773, 0x4870e1b4, 0x516bd0f5, 0x7a468336, 0x635db277,
+		0xcbfad74e, 0xd2e1e60f, 0xf9ccb5cc, 0xe0d7848d, 0xaf96124a, 0xb68d230b, 0x9da070c8, 0x84bb4189,
+		0x03235d46, 0x1a386c07, 0x31153fc4, 0x280e0e85, 0x674f9842, 0x7e54a903, 0x5579fac0, 0x4c62cb81,
+		0x8138c51f, 0x9823f45e, 0xb30ea79d, 0xaa1596dc, 0xe554001b, 0xfc4f315a, 0xd7626299, 0xce7953d8,
+		0x49e14f17, 0x50fa7e56, 0x7bd72d95, 0x62cc1cd4, 0x2d8d8a13, 0x3496bb52, 0x1fbbe891, 0x06a0d9d0,
+		0x5e7ef3ec, 0x4765c2ad, 0x6c48916e, 0x7553a02f, 0x3a1236e8, 0x230907a9, 0x0824546a, 0x113f652b,
+		0x96a779e4, 0x8fbc48a5, 0xa4911b66, 0xbd8a2a27, 0xf2cbbce0, 0xebd08da1, 0xc0fdde62, 0xd9e6ef23,
+		0x14bce1bd, 0x0da7d0fc, 0x268a833f, 0x3f91b27e, 0x70d024b9, 0x69cb15f8, 0x42e6463b, 0x5bfd777a,
+		0xdc656bb5, 0xc57e5af4, 0xee530937, 0xf7483876, 0xb809aeb1, 0xa1129ff0, 0x8a3fcc33, 0x9324fd72,
+	},
+	{
+		0x00000000, 0x01c26a37, 0x0384d46e, 0x0246be59, 0x0709a8dc, 0x06cbc2eb, 0x048d7cb2, 0x054f1685,
+		0x0e1351b8, 0x0fd13b8f, 0x0d9785d6, 0x0c55efe1, 0x091af964, 0x08d89353, 0x0a9e2d0a, 0x0b5c473d,
+		0x1c26a370, 0x1de4c947, 0x1fa2771e, 0x1e601d29, 0x1b2f0bac, 0x1aed619b, 0x18abdfc2, 0x1969b5f5,
+		0x1235f2c8, 0x13f798ff, 0x11b126a6, 0x10734c91, 0x153c5a14, 0x14fe3023, 0x16b88e7a, 0x177ae44d,
+		0x384d46e0, 0x398f2cd7, 0x3bc9928e, 0x3a0bf8b9, 0x3f44ee3c, 0x3e86840b, 0x3cc03a52, 0x3d025065,
+		0x365e1758, 0x379c7d6f, 0x35dac336, 0x3418a901, 0x3157bf84, 0x3095d5b3, 0x32d36bea, 0x331101dd,
+		0x246be590, 0x25a98fa7, 0x27ef31fe, 0x262d5bc9, 0x23624d4c, 0x22a0277b, 0x20e69922, 0x2124f315,
+		0x2a78b428, 0x2bbade1f, 0x29fc6046, 0x283e0a71, 0x2d711cf4, 0x2cb376c3, 0x2ef5c89a, 0x2f37a2ad,
+		0x709a8dc0, 0x7158e7f7, 0x731e59ae, 0x72dc3399, 0x7793251c, 0x76514f2b, 0x7417f172, 0x75d59b45,
+		0x7e89dc78, 0x7f4bb64f, 0x7d0d0816, 0x7ccf6221, 0x798074a4, 0x78421e93, 0x7a04a0ca, 0x7bc6cafd,
+		0x6cbc2eb0, 0x6d7e4487, 0x6f38fade, 0x6efa90e9, 0x6bb5866c, 0x6a77ec5b, 0x68315202, 0x69f33835,
+		0x62af7f08, 0x636d153f, 0x612bab66, 0x60e9c151, 0x65a6d7d4, 0x6464bde3, 0x662203ba, 0x67e0698d,
+		0x48d7cb20, 0x4915a117, 0x4b531f4e, 0x4a917579, 0x4fde63fc, 0x4e1c09cb, 0x4c5ab792, 0x4d98dda5,
+		0x46c49a98, 0x4706f0af, 0x45404ef6, 0x448224c1, 0x41cd3244, 0x400f5873, 0x4249e62a, 0x438b8c1d,
+		0x54f16850, 0x55330267, 0x5775bc3e, 0x56b7d609, 0x53f8c08c, 0x523aaabb, 0x507c14e2, 0x51be7ed5,
+		0x5ae239e8, 0x5b2053df, 0x5966ed86, 0x58a487b1, 0x5deb9134, 0x5c29fb03, 0x5e6f455a, 0x5fad2f6d,
+		0xe1351b80, 0xe0f771b7, 0xe2b1cfee, 0xe373a5d9, 0xe63cb35c, 0xe7fed96b, 0xe5b86732, 0xe47a0d05,
+		0xef264a38, 0xeee4200f, 0xeca29e56, 0xed60f461, 0xe82fe2e4, 0xe9ed88d3, 0xebab368a, 0xea695cbd,
+		0xfd13b8f0, 0xfcd1d2c7, 0xfe976c9e, 0xff5506a9, 0xfa1a102c, 0xfbd87a1b, 0xf99ec442, 0xf85cae75,
+		0xf300e948, 0xf2c2837f, 0xf0843d26, 0xf1465711, 0xf4094194, 0xf5cb2ba3, 0xf78d95fa, 0xf64fffcd,
+		0xd9785d60, 0xd8ba3757, 0xdafc890e, 0xdb3ee339, 0xde71f5bc, 0xdfb39f8b, 0xddf521d2, 0xdc374be5,
+		0xd76b0cd8, 0xd6a966ef, 0xd4efd8b6, 0xd52db281, 0xd062a404, 0xd1a0ce33, 0xd3e6706a, 0xd2241a5d,
+		0xc55efe10, 0xc49c9427, 0xc6da2a7e, 0xc7184049, 0xc25756cc, 0xc3953cfb, 0xc1d382a2, 0xc011e895,
+		0xcb4dafa8, 0xca8fc59f, 0xc8c97bc6, 0xc90b11f1, 0xcc440774, 0xcd866d43, 0xcfc0d31a, 0xce02b92d,
+		0x91af9640, 0x906dfc77, 0x922b422e, 0x93e92819, 0x96a63e9c, 0x976454ab, 0x9522eaf2, 0x94e080c5,
+		0x9fbcc7f8, 0x9e7eadcf, 0x9c381396, 0x9dfa79a1, 0x98b56f24, 0x99770513, 0x9b31bb4a, 0x9af3d17d,
+		0x8d893530, 0x8c4b5f07, 0x8e0de15e, 0x8fcf8b69, 0x8a809dec, 0x8b42f7db, 0x89044982, 0x88c623b5,
+		0x839a6488, 0x82580ebf, 0x801eb0e6, 0x81dcdad1, 0x8493cc54, 0x8551a663, 0x8717183a, 0x86d5720d,
+		0xa9e2d0a0, 0xa820ba97, 0xaa6604ce, 0xaba46ef9, 0xaeeb787c, 0xaf29124b, 0xad6fac12, 0xacadc625,
+		0xa7f18118, 0xa633eb2f, 0xa4755576, 0xa5b73f41, 0xa0f829c4, 0xa13a43f3, 0xa37cfdaa, 0xa2be979d,
+		0xb5c473d0, 0xb40619e7, 0xb640a7be, 0xb782cd89, 0xb2cddb0c, 0xb30fb13b, 0xb1490f62, 0xb08b6555,
+		0xbbd72268, 0xba15485f, 0xb853f606, 0xb9919c31, 0xbcde8ab4, 0xbd1ce083, 0xbf5a5eda, 0xbe9834ed,
+	},
+	{
+		0x00000000, 0xb8bc6765, 0xaa09c88b, 0x12b5afee, 0x8f629757, 0x37def032, 0x256b5fdc, 0x9dd738b9,
+		0xc5b428ef, 0x7d084f8a, 0x6fbde064, 0xd7018701, 0x4ad6bfb8, 0xf26ad8dd, 0xe0df7733, 0x58631056,
+		0x5019579f, 0xe8a530fa, 0xfa109f14, 0x42acf871, 0xdf7bc0c8, 0x67c7a7ad, 0x75720843, 0xcdce6f26,
+		0x95ad7f70, 0x2d111815, 0x3fa4b7fb, 0x8718d09e, 0x1acfe827, 0xa2738f42, 0xb0c620ac, 0x087a47c9,
+		0xa032af3e, 0x188ec85b, 0x0a3b67b5, 0xb28700d0, 0x2f503869, 0x97ec5f0c, 0x8559f0e2, 0x3de59787,
+		0x658687d1, 0xdd3ae0b4, 0xcf8f4f5a, 0x7733283f, 0xeae41086, 0x525877e3, 0x40edd80d, 0xf851bf68,
+		0xf02bf8a1, 0x48979fc4, 0x5a22302a, 0xe29e574f, 0x7f496ff6, 0xc7f50893, 0xd540a77d, 0x6dfcc018,
+		0x359fd04e, 0x8d23b72b, 0x9f9618c5, 0x272a7fa0, 0xbafd4719, 0x0241207c, 0x10f48f92, 0xa848e8f7,
+		0x9b14583d, 0x23a83f58, 0x311d90b6, 0x89a1f7d3, 0x1476cf6a, 0xaccaa80f, 0xbe7f07e1, 0x06c36084,
+		0x5ea070d2, 0xe61c17b7, 0xf4a9b859, 0x4c15df3c, 0xd1c2e785, 0x697e80e0, 0x7bcb2f0e, 0xc377486b,
+		0xcb0d0fa2, 0x73b168c7, 0x6104c729, 0xd9b8a04c, 0x446f98f5, 0xfcd3ff90, 0xee66507e, 0x56da371b,
+		0x0eb9274d, 0xb6054028, 0xa4b0efc6, 0x1c0c88a3, 0x81dbb01a, 0x3967d77f, 0x2bd27891, 0x936e1ff4,
+		0x3b26f703, 0x839a9066, 0x912f3f88, 0x299358ed, 0xb4446054, 0x0cf80731, 0x1e4da8df, 0xa6f1cfba,
+		0xfe92dfec, 0x462eb889, 0x549b1767, 0xec277002, 0x71f048bb, 0xc94c2fde, 0xdbf98030, 0x6345e755,
+		0x6b3fa09c, 0xd383c7f9, 0xc1366817, 0x798a0f72, 0xe45d37cb, 0x5ce150ae, 0x4e54ff40, 0xf6e89825,
+		0xae8b8873, 0x1637ef16, 0x048240f8, 0xbc3e279d, 0x21e91f24, 0x99557841, 0x8be0d7af, 0x335cb0ca,
+		0xed59b63b, 0x55e5d15e, 0x47507eb0, 0xffec19d5, 0x623b216c, 0xda874609, 0xc832e9e7, 0x708e8e82,
+		0x28ed9ed4, 0x9051f9b1, 0x82e4565f, 0x3a58313a, 0xa78f0983, 0x1f336ee6, 0x0d86c108, 0xb53aa66d,
+		0xbd40e1a4, 0x05fc86c1, 0x1749292f, 0xaff54e4a, 0x322276f3, 0x8a9e1196, 0x982bbe78, 0x2097d91d,
+		0x78f4c94b, 0xc048ae2e, 0xd2fd01c0, 0x6a4166a5, 0xf7965e1c, 0x4f2a3979, 0x5d9f9697, 0xe523f1f2,
+		0x4d6b1905, 0xf5d77e60, 0xe762d18e, 0x5fdeb6eb, 0xc2098e52, 0x7ab5e937, 0x680046d9, 0xd0bc21bc,
+		0x88df31ea, 0x3063568f, 0x22d6f961, 0x9a6a9e04, 0x07bda6bd, 0xbf01c1d8, 0xadb46e36, 0x15080953,
+		0x1d724e9a, 0xa5ce29ff, 0xb77b8611, 0x0fc7e174, 0x9210d9cd, 0x2aacbea8, 0x38191146, 0x80a57623,
+		0xd8c66675, 0x607a0110, 0x72cfaefe, 0xca73c99b, 0x57a4f122, 0xef189647, 0xfdad39a9, 0x45115ecc,
+		0x764dee06, 0xcef18963, 0xdc44268d, 0x64f841e8, 0xf92f7951, 0x41931e34, 0x5326b1da, 0xeb9ad6bf,
+		0xb3f9c6e9, 0x0b45a18c, 0x19f00e62, 0xa14c6907, 0x3c9b51be, 0x842736db, 0x96929935, 0x2e2efe50,
+		0x2654b999, 0x9ee8defc, 0x8c5d7112, 0x34e11677, 0xa9362ece, 0x118a49ab, 0x033fe645, 0xbb838120,
+		0xe3e09176, 0x5b5cf613, 0x49e959fd, 0xf1553e98, 0x6c820621, 0xd43e6144, 0xc68bceaa, 0x7e37a9cf,
+		0xd67f4138, 0x6ec3265d, 0x7c7689b3, 0xc4caeed6, 0x591dd66f, 0xe1a1b10a, 0xf3141ee4, 0x4ba87981,
+		0x13cb69d7, 0xab770eb2, 0xb9c2a15c, 0x017ec639, 0x9ca9fe80, 0x241599e5, 0x36a0360b, 0x8e1c516e,
+		0x866616a7, 0x3eda71c2, 0x2c6fde2c, 0x94d3b949, 0x090481f0, 0xb1b8e695, 0xa30d497b, 0x1bb12e1e,
+		0x43d23e48, 0xfb6e592d, 0xe9dbf6c3, 0x516791a6, 0xccb0a91f, 0x740cce7a, 0x66b96194, 0xde0506f1,
+	},
+	{
+		0x00000000, 0x3d6029b0, 0x7ac05360, 0x47a07ad0, 0xf580a6c0, 0xc8e08f70, 0x8f40f5a0, 0xb220dc10,
+		0x30704bc1, 0x0d106271, 0x4ab018a1, 0x77d03111, 0xc5f0ed01, 0xf890c4b1, 0xbf30be61, 0x825097d1,
+		0x60e09782, 0x5d80be32, 0x1a20c4e2, 0x2740ed52, 0x95603142, 0xa80018f2, 0xefa06222, 0xd2c04b92,
+		0x5090dc43, 0x6df0f5f3, 0x2a508f23, 0x1730a693, 0xa5107a83, 0x98705333, 0xdfd029e3, 0xe2b00053,
+		0xc1c12f04, 0xfca106b4, 0xbb017c64, 0x866155d4, 0x344189c4, 0x0921a074, 0x4e81daa4, 0x73e1f314,
+		0xf1b164c5, 0xccd14d75, 0x8b7137a5, 0xb6111e15, 0x0431c205, 0x3951ebb5, 0x7ef19165, 0x4391b8d5,
+		0xa121b886, 0x9c419136, 0xdbe1ebe6, 0xe681c256, 0x54a11e46, 0x69c137f6, 0x2e614d26, 0x13016496,
+		0x9151f347, 0xac31daf7, 0xeb91a027, 0xd6f18997, 0x64d15587, 0x59b17c37, 0x1e1106e7, 0x23712f57,
+		0x58f35849, 0x659371f9, 0x22330b29, 0x1f532299, 0xad73fe89, 0x9013d739, 0xd7b3ade9, 0xead38459,
+		0x68831388, 0x55e33a38, 0x124340e8, 0x2f236958, 0x9d03b548, 0xa0639cf8, 0xe7c3e628, 0xdaa3cf98,
+		0x3813cfcb, 0x0573e67b, 0x42d39cab, 0x7fb3b51b, 0xcd93690b, 0xf0f340bb, 0xb7533a6b, 0x8a3313db,
+		0x0863840a, 0x3503adba, 0x72a3d76a, 0x4fc3feda, 0xfde322ca, 0xc0830b7a, 0x872371aa, 0xba43581a,
+		0x9932774d, 0xa4525efd, 0xe3f2242d, 0xde920d9d, 0x6cb2d18d, 0x51d2f83d, 0x167282ed, 0x2b12ab5d,
+		0xa9423c8c, 0x9422153c, 0xd3826fec, 0xeee2465c, 0x5cc29a4c, 0x61a2b3fc, 0x2602c92c, 0x1b62e09c,
+		0xf9d2e0cf, 0xc4b2c97f, 0x8312b3af, 0xbe729a1f, 0x0c52460f, 0x31326fbf, 0x7692156f, 0x4bf23cdf,
+		0xc9a2ab0e, 0xf4c282be, 0xb362f86e, 0x8e02d1de, 0x3c220dce, 0x0142247e, 0x46e25eae, 0x7b82771e,
+		0xb1e6b092, 0x8c869922, 0xcb26e3f2, 0xf646ca42, 0x44661652, 0x79063fe2, 0x3ea64532, 0x03c66c82,
+		0x8196fb53, 0xbcf6d2e3, 0xfb56a833, 0xc6368183, 0x74165d93, 0x49767423, 0x0ed60ef3, 0x33b62743,
+		0xd1062710, 0xec660ea0, 0xabc67470, 0x96a65dc0, 0x248681d0, 0x19e6a860, 0x5e46d2b0, 0x6326fb00,
+		0xe1766cd1, 0xdc164561, 0x9bb63fb1, 0xa6d61601, 0x14f6ca11, 0x2996e3a1, 0x6e369971, 0x5356b0c1,
+		0x70279f96, 0x4d47b626, 0x0ae7ccf6, 0x3787e546, 0x85a73956, 0xb8c710e6, 0xff676a36, 0xc2074386,
+		0x4057d457, 0x7d37fde7, 0x3a978737, 0x07f7ae87, 0xb5d77297, 0x88b75b27, 0xcf1721f7, 0xf2770847,
+		0x10c70814, 0x2da721a4, 0x6a075b74, 0x576772c4, 0xe547aed4, 0xd8278764, 0x9f87fdb4, 0xa2e7d404,
+		0x20b743d5, 0x1dd76a65, 0x5a7710b5, 0x67173905, 0xd537e515, 0xe857cca5, 0xaff7b675, 0x92979fc5,
+		0xe915e8db, 0xd475c16b, 0x93d5bbbb, 0xaeb5920b, 0x1c954e1b, 0x21f567ab, 0x66551d7b, 0x5b3534cb,
+		0xd965a31a, 0xe4058aaa, 0xa3a5f07a, 0x9ec5d9ca, 0x2ce505da, 0x11852c6a, 0x562556ba, 0x6b457f0a,
+		0x89f57f59, 0xb49556e9, 0xf3352c39, 0xce550589, 0x7c75d999, 0x4115f029, 0x06b58af9, 0x3bd5a349,
+		0xb9853498, 0x84e51d28, 0xc34567f8, 0xfe254e48, 0x4c059258, 0x7165bbe8, 0x36c5c138, 0x0ba5e888,
+		0x28d4c7df, 0x15b4ee6f, 0x521494bf, 0x6f74bd0f, 0xdd54611f, 0xe03448af, 0xa794327f, 0x9af41bcf,
+		0x18a48c1e, 0x25c4a5ae, 0x6264df7e, 0x5f04f6ce, 0xed242ade, 0xd044036e, 0x97e479be, 0xaa84500e,
+		0x4834505d, 0x755479ed, 0x32f4033d, 0x0f942a8d, 0xbdb4f69d, 0x80d4df2d, 0xc774a5fd, 0xfa148c4d,
+		0x78441b9c, 0x4524322c, 0x028448fc, 0x3fe4614c, 0x8dc4bd5c, 0xb0a494ec, 0xf704ee3c, 0xca64c78c,
+	},
+	{
+		0x00000000, 0xcb5cd3a5, 0x4dc8a10b, 0x869472ae, 0x9b914216, 0x50cd91b3, 0xd659e31d, 0x1d0530b8,
+		0xec53826d, 0x270f51c8, 0xa19b2366, 0x6ac7f0c3, 0x77c2c07b, 0xbc9e13de, 0x3a0a6170, 0xf156b2d5,
+		0x03d6029b, 0xc88ad13e, 0x4e1ea390, 0x85427035, 0x9847408d, 0x531b9328, 0xd58fe186, 0x1ed33223,
+		0xef8580f6, 0x24d95353, 0xa24d21fd, 0x6911f258, 0x7414c2e0, 0xbf481145, 0x39dc63eb, 0xf280b04e,
+		0x07ac0536, 0xccf0d693, 0x4a64a43d, 0x81387798, 0x9c3d4720, 0x57619485, 0xd1f5e62b, 0x1aa9358e,
+		0xebff875b, 0x20a354fe, 0xa6372650, 0x6d6bf5f5, 0x706ec54d, 0xbb3216e8, 0x3da66446, 0xf6fab7e3,
+		0x047a07ad, 0xcf26d408, 0x49b2a6a6, 0x82ee7503, 0x9feb45bb, 0x54b7961e, 0xd223e4b0, 0x197f3715,
+		0xe82985c0, 0x23755665, 0xa5e124cb, 0x6ebdf76e, 0x73b8c7d6, 0xb8e41473, 0x3e7066dd, 0xf52cb578,
+		0x0f580a6c, 0xc404d9c9, 0x4290ab67, 0x89cc78c2, 0x94c9487a, 0x5f959bdf, 0xd901e971, 0x125d3ad4,
+		0xe30b8801, 0x28575ba4, 0xaec3290a, 0x659ffaaf, 0x789aca17, 0xb3c619b2, 0x35526b1c, 0xfe0eb8b9,
+		0x0c8e08f7, 0xc7d2db52, 0x4146a9fc, 0x8a1a7a59, 0x971f4ae1, 0x5c439944, 0xdad7ebea, 0x118b384f,
+		0xe0dd8a9a, 0x2b81593f, 0xad152b91, 0x6649f834, 0x7b4cc88c, 0xb0101b29, 0x36846987, 0xfdd8ba22,
+		0x08f40f5a, 0xc3a8dcff, 0x453cae51, 0x8e607df4, 0x93654d4c, 0x58399ee9, 0xdeadec47, 0x15f13fe2,
+		0xe4a78d37, 0x2ffb5e92, 0xa96f2c3c, 0x6233ff99, 0x7f36cf21, 0xb46a1c84, 0x32fe6e2a, 0xf9a2bd8f,
+		0x0b220dc1, 0xc07ede64, 0x46eaacca, 0x8db67f6f, 0x90b34fd7, 0x5bef9c72, 0xdd7beedc, 0x16273d79,
+		0xe7718fac, 0x2c2d5c09, 0xaab92ea7, 0x61e5fd02, 0x7ce0cdba, 0xb7bc1e1f, 0x31286cb1, 0xfa74bf14,
+		0x1eb014d8, 0xd5ecc77d, 0x5378b5d3, 0x98246676, 0x852156ce, 0x4e7d856b, 0xc8e9f7c5, 0x03b52460,
+		0xf2e396b5, 0x39bf4510, 0xbf2b37be, 0x7477e41b, 0x6972d4a3, 0xa22e0706, 0x24ba75a8, 0xefe6a60d,
+		0x1d661643, 0xd63ac5e6, 0x50aeb748, 0x9bf264ed, 0x86f75455, 0x4dab87f0, 0xcb3ff55e, 0x006326fb,
+		0xf135942e, 0x3a69478b, 0xbcfd3525, 0x77a1e680, 0x6aa4d638, 0xa1f8059d, 0x276c7733, 0xec30a496,
+		0x191c11ee, 0xd240c24b, 0x54d4b0e5, 0x9f886340, 0x828d53f8, 0x49d1805d, 0xcf45f2f3, 0x04192156,
+		0xf54f9383, 0x3e134026, 0xb8873288, 0x73dbe12d, 0x6eded195, 0xa5820230, 0x2316709e, 0xe84aa33b,
+		0x1aca1375, 0xd196c0d0, 0x5702b27e, 0x9c5e61db, 0x815b5163, 0x4a0782c6, 0xcc93f068, 0x07cf23cd,
+		0xf6999118, 0x3dc542bd, 0xbb513013, 0x700de3b6, 0x6d08d30e, 0xa65400ab, 0x20c07205, 0xeb9ca1a0,
+		0x11e81eb4, 0xdab4cd11, 0x5c20bfbf, 0x977c6c1a, 0x8a795ca2, 0x41258f07, 0xc7b1fda9, 0x0ced2e0c,
+		0xfdbb9cd9, 0x36e74f7c, 0xb0733dd2, 0x7b2fee77, 0x662adecf, 0xad760d6a, 0x2be27fc4, 0xe0beac61,
+		0x123e1c2f, 0xd962cf8a, 0x5ff6bd24, 0x94aa6e81, 0x89af5e39, 0x42f38d9c, 0xc467ff32, 0x0f3b2c97,
+		0xfe6d9e42, 0x35314de7, 0xb3a53f49, 0x78f9ecec, 0x65fcdc54, 0xaea00ff1, 0x28347d5f, 0xe368aefa,
+		0x16441b82, 0xdd18c827, 0x5b8cba89, 0x90d0692c, 0x8dd55994, 0x46898a31, 0xc01df89f, 0x0b412b3a,
+		0xfa1799ef, 0x314b4a4a, 0xb7df38e4, 0x7c83eb41, 0x6186dbf9, 0xaada085c, 0x2c4e7af2, 0xe712a957,
+		0x15921919, 0xdececabc, 0x585ab812, 0x93066bb7, 0x8e035b0f, 0x455f88aa, 0xc3cbfa04, 0x089729a1,
+		0xf9c19b74, 0x329d48d1, 0xb4093a7f, 0x7f55e9da, 0x6250d962, 0xa90c0ac7, 0x2f987869, 0xe4c4abcc,
+	},
+	{
+		0x00000000, 0xa6770bb4, 0x979f1129, 0x31e81a9d, 0xf44f2413, 0x52382fa7, 0x63d0353a, 0xc5a73e8e,
+		0x33ef4e67, 0x959845d3, 0xa4705f4e, 0x020754fa, 0xc7a06a74, 0x61d761c0, 0x503f7b5d, 0xf64870e9,
+		0x67de9cce, 0xc1a9977a, 0xf0418de7, 0x56368653, 0x9391b8dd, 0x35e6b369, 0x040ea9f4, 0xa279a240,
+		0x5431d2a9, 0xf246d91d, 0xc3aec380, 0x65d9c834, 0xa07ef6ba, 0x0609fd0e, 0x37e1e793, 0x9196ec27,
+		0xcfbd399c, 0x69ca3228, 0x582228b5, 0xfe552301, 0x3bf21d8f, 0x9d85163b, 0xac6d0ca6, 0x0a1a0712,
+		0xfc5277fb, 0x5a257c4f, 0x6bcd66d2, 0xcdba6d66, 0x081d53e8, 0xae6a585c, 0x9f8242c1, 0x39f54975,
+		0xa863a552, 0x0e14aee6, 0x3ffcb47b, 0x998bbfcf, 0x5c2c8141, 0xfa5b8af5, 0xcbb39068, 0x6dc49bdc,
+		0x9b8ceb35, 0x3dfbe081, 0x0c13fa1c, 0xaa64f1a8, 0x6fc3cf26, 0xc9b4c492, 0xf85cde0f, 0x5e2bd5bb,
+		0x440b7579, 0xe27c7ecd, 0xd3946450, 0x75e36fe4, 0xb044516a, 0x16335ade, 0x27db4043, 0x81ac4bf7,
+		0x77e43b1e, 0xd19330aa, 0xe07b2a37, 0x460c2183, 0x83ab1f0d, 0x25dc14b9, 0x14340e24, 0xb2430590,
+		0x23d5e9b7, 0x85a2e203, 0xb44af89e, 0x123df32a, 0xd79acda4, 0x71edc610, 0x4005dc8d, 0xe672d739,
+		0x103aa7d0, 0xb64dac64, 0x87a5b6f9, 0x21d2bd4d, 0xe47583c3, 0x42028877, 0x73ea92ea, 0xd59d995e,
+		0x8bb64ce5, 0x2dc14751, 0x1c295dcc, 0xba5e5678, 0x7ff968f6, 0xd98e6342, 0xe86679df, 0x4e11726b,
+		0xb8590282, 0x1e2e0936, 0x2fc613ab, 0x89b1181f, 0x4c162691, 0xea612d25, 0xdb8937b8, 0x7dfe3c0c,
+		0xec68d02b, 0x4a1fdb9f, 0x7bf7c102, 0xdd80cab6, 0x1827f438, 0xbe50ff8c, 0x8fb8e511, 0x29cfeea5,
+		0xdf879e4c, 0x79f095f8, 0x48188f65, 0xee6f84d1, 0x2bc8ba5f, 0x8dbfb1eb, 0xbc57ab76, 0x1a20a0c2,
+		0x8816eaf2, 0x2e61e146, 0x1f89fbdb, 0xb9fef06f, 0x7c59cee1, 0xda2ec555, 0xebc6dfc8, 0x4db1d47c,
+		0xbbf9a495, 0x1d8eaf21, 0x2c66b5bc, 0x8a11be08, 0x4fb68086, 0xe9c18b32, 0xd82991af, 0x7e5e9a1b,
+		0xefc8763c, 0x49bf7d88, 0x78576715, 0xde206ca1, 0x1b87522f, 0xbdf0599b, 0x8c184306, 0x2a6f48b2,
+		0xdc27385b, 0x7a5033ef, 0x4bb82972, 0xedcf22c6, 0x28681c48, 0x8e1f17fc, 0xbff70d61, 0x198006d5,
+		0x47abd36e, 0xe1dcd8da, 0xd034c247, 0x7643c9f3, 0xb3e4f77d, 0x1593fcc9, 0x247be654, 0x820cede0,
+		0x74449d09, 0xd23396bd, 0xe3db8c20, 0x45ac8794, 0x800bb91a, 0x267cb2ae, 0x1794a833, 0xb1e3a387,
+		0x20754fa0, 0x86024414, 0xb7ea5e89, 0x119d553d, 0xd43a6bb3, 0x724d6007, 0x43a57a9a, 0xe5d2712e,
+		0x139a01c7, 0xb5ed0a73, 0x840510ee, 0x22721b5a, 0xe7d525d4, 0x41a22e60, 0x704a34fd, 0xd63d3f49,
+		0xcc1d9f8b, 0x6a6a943f, 0x5b828ea2, 0xfdf58516, 0x3852bb98, 0x9e25b02c, 0xafcdaab1, 0x09baa105,
+		0xfff2d1ec, 0x5985da58, 0x686dc0c5, 0xce1acb71, 0x0bbdf5ff, 0xadcafe4b, 0x9c22e4d6, 0x3a55ef62,
+		0xabc30345, 0x0db408f1, 0x3c5c126c, 0x9a2b19d8, 0x5f8c2756, 0xf9fb2ce2, 0xc813367f, 0x6e643dcb,
+		0x982c4d22, 0x3e5b4696, 0x0fb35c0b, 0xa9c457bf, 0x6c636931, 0xca146285, 0xfbfc7818, 0x5d8b73ac,
+		0x03a0a617, 0xa5d7ada3, 0x943fb73e, 0x3248bc8a, 0xf7ef8204, 0x519889b0, 0x6070932d, 0xc6079899,
+		0x304fe870, 0x9638e3c4, 0xa7d0f959, 0x01a7f2ed, 0xc400cc63, 0x6277c7d7, 0x539fdd4a, 0xf5e8d6fe,
+		0x647e3ad9, 0xc209316d, 0xf3e12bf0, 0x55962044, 0x90311eca, 0x3646157e, 0x07ae0fe3, 0xa1d90457,
+		0x579174be, 0xf1e67f0a, 0xc00e6597, 0x66796e23, 0xa3de50ad, 0x05a95b19, 0x34414184, 0x92364a30,
+	},
+	{
+		0x00000000, 0xccaa009e, 0x4225077d, 0x8e8f07e3, 0x844a0efa, 0x48e00e64, 0xc66f0987, 0x0ac50919,
+		0xd3e51bb5, 0x1f4f1b2b, 0x91c01cc8, 0x5d6a1c56, 0x57af154f, 0x9b0515d1, 0x158a1232, 0xd92012ac,
+		0x7cbb312b, 0xb01131b5, 0x3e9e3656, 0xf23436c8, 0xf8f13fd1, 0x345b3f4f, 0xbad438ac, 0x767e3832,
+		0xaf5e2a9e, 0x63f42a00, 0xed7b2de3, 0x21d12d7d, 0x2b142464, 0xe7be24fa, 0x69312319, 0xa59b2387,
+		0xf9766256, 0x35dc62c8, 0xbb53652b, 0x77f965b5, 0x7d3c6cac, 0xb1966c32, 0x3f196bd1, 0xf3b36b4f,
+		0x2a9379e3, 0xe639797d, 0x68b67e9e, 0xa41c7e00, 0xaed97719, 0x62737787, 0xecfc7064, 0x205670fa,
+		0x85cd537d, 0x496753e3, 0xc7e85400, 0x0b42549e, 0x01875d87, 0xcd2d5d19, 0x43a25afa, 0x8f085a64,
+		0x562848c8, 0x9a824856, 0x140d4fb5, 0xd8a74f2b, 0xd2624632, 0x1ec846ac, 0x9047414f, 0x5ced41d1,
+		0x299dc2ed, 0xe537c273, 0x6bb8c590, 0xa712c50e, 0xadd7cc17, 0x617dcc89, 0xeff2cb6a, 0x2358cbf4,
+		0xfa78d958, 0x36d2d9c6, 0xb85dde25, 0x74f7debb, 0x7e32d7a2, 0xb298d73c, 0x3c17d0df, 0xf0bdd041,
+		0x5526f3c6, 0x998cf358, 0x1703f4bb, 0xdba9f425, 0xd16cfd3c, 0x1dc6fda2, 0x9349fa41, 0x5fe3fadf,
+		0x86c3e873, 0x4a69e8ed, 0xc4e6ef0e, 0x084cef90, 0x0289e689, 0xce23e617, 0x40ace1f4, 0x8c06e16a,
+		0xd0eba0bb, 0x1c41a025, 0x92cea7c6, 0x5e64a758, 0x54a1ae41, 0x980baedf, 0x1684a93c, 0xda2ea9a2,
+		0x030ebb0e, 0xcfa4bb90, 0x412bbc73, 0x8d81bced, 0x8744b5f4, 0x4beeb56a, 0xc561b289, 0x09cbb217,
+		0xac509190, 0x60fa910e, 0xee7596ed, 0x22df9673, 0x281a9f6a, 0xe4b09ff4, 0x6a3f9817, 0xa6959889,
+		0x7fb58a25, 0xb31f8abb, 0x3d908d58, 0xf13a8dc6, 0xfbff84df, 0x37558441, 0xb9da83a2, 0x7570833c,
+		0x533b85da, 0x9f918544, 0x111e82a7, 0xddb48239, 0xd7718b20, 0x1bdb8bbe, 0x95548c5d, 0x59fe8cc3,
+		0x80de9e6f, 0x4c749ef1, 0xc2fb9912, 0x0e51998c, 0x04949095, 0xc83e900b, 0x46b197e8, 0x8a1b9776,
+		0x2f80b4f1, 0xe32ab46f, 0x6da5b38c, 0xa10fb312, 0xabcaba0b, 0x6760ba95, 0xe9efbd76, 0x2545bde8,
+		0xfc65af44, 0x30cfafda, 0xbe40a839, 0x72eaa8a7, 0x782fa1be, 0xb485a120, 0x3a0aa6c3, 0xf6a0a65d,
+		0xaa4de78c, 0x66e7e712, 0xe868e0f1, 0x24c2e06f, 0x2e07e976, 0xe2ade9e8, 0x6c22ee0b, 0xa088ee95,
+		0x79a8fc39, 0xb502fca7, 0x3b8dfb44, 0xf727fbda, 0xfde2f2c3, 0x3148f25d, 0xbfc7f5be, 0x736df520,
+		0xd6f6d6a7, 0x1a5cd639, 0x94d3d1da, 0x5879d144, 0x52bcd85d, 0x9e16d8c3, 0x1099df20, 0xdc33dfbe,
+		0x0513cd12, 0xc9b9cd8c, 0x4736ca6f, 0x8b9ccaf1, 0x8159c3e8, 0x4df3c376, 0xc37cc495, 0x0fd6c40b,
+		0x7aa64737, 0xb60c47a9, 0x3883404a, 0xf42940d4, 0xfeec49cd, 0x32464953, 0xbcc94eb0, 0x70634e2e,
+		0xa9435c82, 0x65e95c1c, 0xeb665bff, 0x27cc5b61, 0x2d095278, 0xe1a352e6, 0x6f2c5505, 0xa386559b,
+		0x061d761c, 0xcab77682, 0x44387161, 0x889271ff, 0x825778e6, 0x4efd7878, 0xc0727f9b, 0x0cd87f05,
+		0xd5f86da9, 0x19526d37, 0x97dd6ad4, 0x5b776a4a, 0x51b26353, 0x9d1863cd, 0x1397642e, 0xdf3d64b0,
+		0x83d02561, 0x4f7a25ff, 0xc1f5221c, 0x0d5f2282, 0x079a2b9b, 0xcb302b05, 0x45bf2ce6, 0x89152c78,
+		0x50353ed4, 0x9c9f3e4a, 0x121039a9, 0xdeba3937, 0xd47f302e, 0x18d530b0, 0x965a3753, 0x5af037cd,
+		0xff6b144a, 0x33c114d4, 0xbd4e1337, 0x71e413a9, 0x7b211ab0, 0xb78b1a2e, 0x39041dcd, 0xf5ae1d53,
+		0x2c8e0fff, 0xe0240f61, 0x6eab0882, 0xa201081c, 0xa8c40105, 0x646e019b, 0xeae10678, 0x264b06e6,
+	},
+};
+
+
+
+/*
+@(optimization_mode="speed")
+crc32 :: proc(data: []byte, seed := u32(0)) -> u32 {
+	result := ~u32(seed);
+	 #no_bounds_check for b in data {
+		result = result>>8 ~ _crc32_table[(result ~ u32(b)) & 0xff];
+	}
+	return ~result;
+}
+
+
+@private _crc32_table := [256]u32{
+	0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
+	0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+	0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+	0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+	0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+	0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+	0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
+	0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+	0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+	0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+	0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
+	0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+	0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
+	0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+	0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+	0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+	0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
+	0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+	0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
+	0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+	0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+	0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+	0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
+	0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+	0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+	0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+	0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+	0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+	0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
+	0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+	0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
+	0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+	0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+	0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+	0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+	0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+	0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
+	0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+	0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+	0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+	0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
+	0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+	0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
+	0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+	0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+	0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+	0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
+	0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+	0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
+	0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+	0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+	0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+	0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
+	0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+	0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+	0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+	0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+	0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+	0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
+	0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+	0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
+	0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+	0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+	0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
+};
+*/

core/hash/hash.odin

@@ -0,0 +1,271 @@
+package hash
+
+import "core:mem"
+import "intrinsics"
+
+@(optimization_mode="speed")
+adler32 :: proc(data: []byte, seed := u32(1)) -> u32 #no_bounds_check {
+
+	ADLER_CONST :: 65521;
+
+	buffer := raw_data(data);
+	a, b: u64 = u64(seed) & 0xFFFF, u64(seed) >> 16;
+	buf := data[:];
+
+	for len(buf) != 0 && uintptr(buffer) & 7 != 0 {
+		a = (a + u64(buf[0]));
+		b = (b + a);
+		buffer = intrinsics.ptr_offset(buffer, 1);
+		buf = buf[1:];
+	}
+
+	for len(buf) > 7 {
+		count := min(len(buf), 5552);
+		for count > 7 {
+			a += u64(buf[0]); b += a;
+			a += u64(buf[1]); b += a;
+			a += u64(buf[2]); b += a;
+			a += u64(buf[3]); b += a;
+			a += u64(buf[4]); b += a;
+			a += u64(buf[5]); b += a;
+			a += u64(buf[6]); b += a;
+			a += u64(buf[7]); b += a;
+
+			buf = buf[8:];
+			count -= 8;
+		}
+		a %= ADLER_CONST;
+		b %= ADLER_CONST;
+	}
+
+	for len(buf) != 0 {
+		a = (a + u64(buf[0])) % ADLER_CONST;
+		b = (b + a) % ADLER_CONST;
+		buf = buf[1:];
+	}
+	return (u32(b) << 16) | u32(a);
+}
+
+@(optimization_mode="speed")
+djb2 :: proc(data: []byte) -> u32 {
+	hash: u32 = 5381;
+	for b in data {
+		hash = (hash << 5) + hash + u32(b); // hash * 33 + u32(b)
+	}
+	return hash;
+}
+
+@(optimization_mode="speed")
+fnv32 :: proc(data: []byte) -> u32 {
+	h: u32 = 0x811c9dc5;
+	for b in data {
+		h = (h * 0x01000193) ~ u32(b);
+	}
+	return h;
+}
+
+@(optimization_mode="speed")
+fnv64 :: proc(data: []byte) -> u64 {
+	h: u64 = 0xcbf29ce484222325;
+	for b in data {
+		h = (h * 0x100000001b3) ~ u64(b);
+	}
+	return h;
+}
+
+@(optimization_mode="speed")
+fnv32a :: proc(data: []byte) -> u32 {
+	h: u32 = 0x811c9dc5;
+	for b in data {
+		h = (h ~ u32(b)) * 0x01000193;
+	}
+	return h;
+}
+
+@(optimization_mode="speed")
+fnv64a :: proc(data: []byte) -> u64 {
+	h: u64 = 0xcbf29ce484222325;
+	for b in data {
+		h = (h ~ u64(b)) * 0x100000001b3;
+	}
+	return h;
+}
+
+@(optimization_mode="speed")
+jenkins :: proc(data: []byte) -> u32 {
+	hash: u32 = 0;
+	for b in data {
+		hash += u32(b);
+		hash += hash << 10;
+		hash ~= hash >> 6;
+	}
+	hash += hash << 3;
+	hash ~= hash >> 11;
+	hash += hash << 15;
+	return hash;
+}
+
+@(optimization_mode="speed")
+murmur32 :: proc(data: []byte) -> u32 {
+	c1_32: u32 : 0xcc9e2d51;
+	c2_32: u32 : 0x1b873593;
+
+	h1: u32 = 0;
+	nblocks := len(data)/4;
+	p := raw_data(data);
+	p1 := mem.ptr_offset(p, 4*nblocks);
+
+	for ; p < p1; p = mem.ptr_offset(p, 4) {
+		k1 := (cast(^u32)p)^;
+
+		k1 *= c1_32;
+		k1 = (k1 << 15) | (k1 >> 17);
+		k1 *= c2_32;
+
+		h1 ~= k1;
+		h1 = (h1 << 13) | (h1 >> 19);
+		h1 = h1*5 + 0xe6546b64;
+	}
+
+	tail := data[nblocks*4:];
+	k1: u32;
+	switch len(tail)&3 {
+	case 3:
+		k1 ~= u32(tail[2]) << 16;
+		fallthrough;
+	case 2:
+		k1 ~= u32(tail[2]) << 8;
+		fallthrough;
+	case 1:
+		k1 ~= u32(tail[0]);
+		k1 *= c1_32;
+		k1 = (k1 << 15) | (k1 >> 17) ;
+		k1 *= c2_32;
+		h1 ~= k1;
+	}
+
+	h1 ~= u32(len(data));
+
+	h1 ~= h1 >> 16;
+	h1 *= 0x85ebca6b;
+	h1 ~= h1 >> 13;
+	h1 *= 0xc2b2ae35;
+	h1 ~= h1 >> 16;
+
+	return h1;
+}
+
+@(optimization_mode="speed")
+murmur64 :: proc(data: []byte) -> u64 {
+	SEED :: 0x9747b28c;
+
+	when size_of(int) == 8 {
+		m :: 0xc6a4a7935bd1e995;
+		r :: 47;
+
+		h: u64 = SEED ~ (u64(len(data)) * m);
+		data64 := mem.slice_ptr(cast(^u64)raw_data(data), len(data)/size_of(u64));
+
+		for _, i in data64 {
+			k := data64[i];
+
+			k *= m;
+			k ~= k>>r;
+			k *= m;
+
+			h ~= k;
+			h *= m;
+		}
+
+		switch len(data)&7 {
+		case 7: h ~= u64(data[6]) << 48; fallthrough;
+		case 6: h ~= u64(data[5]) << 40; fallthrough;
+		case 5: h ~= u64(data[4]) << 32; fallthrough;
+		case 4: h ~= u64(data[3]) << 24; fallthrough;
+		case 3: h ~= u64(data[2]) << 16; fallthrough;
+		case 2: h ~= u64(data[1]) << 8;  fallthrough;
+		case 1:
+			h ~= u64(data[0]);
+			h *= m;
+		}
+
+		h ~= h>>r;
+		h *= m;
+		h ~= h>>r;
+
+		return h;
+	} else {
+		m :: 0x5bd1e995;
+		r :: 24;
+
+		h1 := u32(SEED) ~ u32(len(data));
+		h2 := u32(SEED) >> 32;
+		data32 := mem.slice_ptr(cast(^u32)raw_data(data), len(data)/size_of(u32));
+		len := len(data);
+		i := 0;
+
+		for len >= 8 {
+			k1, k2: u32;
+			k1 = data32[i]; i += 1;
+			k1 *= m;
+			k1 ~= k1>>r;
+			k1 *= m;
+			h1 *= m;
+			h1 ~= k1;
+			len -= 4;
+
+			k2 = data32[i]; i += 1;
+			k2 *= m;
+			k2 ~= k2>>r;
+			k2 *= m;
+			h2 *= m;
+			h2 ~= k2;
+			len -= 4;
+		}
+
+		if len >= 4 {
+			k1: u32;
+			k1 = data32[i]; i += 1;
+			k1 *= m;
+			k1 ~= k1>>r;
+			k1 *= m;
+			h1 *= m;
+			h1 ~= k1;
+			len -= 4;
+		}
+
+		// TODO(bill): Fix this
+		#no_bounds_check data8 := mem.slice_to_bytes(data32[i:])[:3];
+		switch len {
+		case 3:
+			h2 ~= u32(data8[2]) << 16;
+			fallthrough;
+		case 2:
+			h2 ~= u32(data8[1]) << 8;
+			fallthrough;
+		case 1:
+			h2 ~= u32(data8[0]);
+			h2 *= m;
+		}
+
+		h1 ~= h2>>18;
+		h1 *= m;
+		h2 ~= h1>>22;
+		h2 *= m;
+		h1 ~= h2>>17;
+		h1 *= m;
+		h2 ~= h1>>19;
+		h2 *= m;
+
+		return u64(h1)<<32 | u64(h2);
+	}
+}
+
+@(optimization_mode="speed")
+sdbm :: proc(data: []byte) -> u32 {
+	hash: u32 = 0;
+	for b in data {
+		hash = u32(b) + (hash<<6) + (hash<<16) - hash;
+	}
+	return hash;
+}

core/hash/mini.odin

@@ -0,0 +1,40 @@
+package hash
+
+ginger_hash8 :: proc(x: u8) -> u8 {
+	h := x * 251;
+	h += ~(x << 3);
+	h ~=  (x >> 1);
+	h += ~(x << 7);
+	h ~=  (x >> 6);
+	h +=  (x << 2);
+	return h;
+}
+
+
+ginger_hash16 :: proc(x: u16) -> u16 {
+	z := (x << 8) | (x >> 8);
+	h := z;
+	h += ~(z << 5);
+	h ~=  (z >> 2);
+	h += ~(z << 13);
+	h ~=  (z >> 10);
+	h += ~(z << 4);
+	h = (h << 10) | (h >> 10);
+	return h;
+}
+
+
+ginger8 :: proc(data: []byte) -> u8 {
+	h := ginger_hash8(0);
+	for b in data {
+		h ~= ginger_hash8(b);
+	}
+	return h;
+}
+ginger16 :: proc(data: []byte) -> u16 {
+	h := ginger_hash16(0);
+	for b in data {
+		h ~= ginger_hash16(u16(b));
+	}
+	return h;
+}

core/image/common.odin

@@ -0,0 +1,214 @@
+package image
+
+/*
+	Copyright 2021 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-2 license.
+
+	List of contributors:
+		Jeroen van Rijn: Initial implementation, optimization.
+		Ginger Bill:     Cosmetic changes.
+*/
+
+import "core:bytes"
+import "core:mem"
+
+Image :: struct {
+	width:         int,
+	height:        int,
+	channels:      int,
+	depth:         int,
+	pixels:        bytes.Buffer,
+	/*
+		Some image loaders/writers can return/take an optional background color.
+		For convenience, we return them as u16 so we don't need to switch on the type
+		in our viewer, and can just test against nil.
+	*/
+	background:    Maybe([3]u16),
+
+	metadata_ptr:  rawptr,
+	metadata_type: typeid,
+}
+
+/*
+	IMPORTANT: `.do_not_expand_*` options currently skip handling of the `alpha_*` options,
+		therefore Gray+Alpha will be returned as such even if you add `.alpha_drop_if_present`,
+		and `.alpha_add_if_missing` and keyed transparency will likewise be ignored.
+
+		The same goes for indexed images. This will be remedied in a near future update.
+*/
+
+/*
+Image_Option:
+	`.info`
+		This option behaves as `.return_ihdr` and `.do_not_decompress_image` and can be used
+		to gather an image's dimensions and color information.
+
+	`.return_header`
+		Fill out img.sidecar.header with the image's format-specific header struct.
+		If we only care about the image specs, we can set `.return_header` +
+		`.do_not_decompress_image`, or `.info`, which works as if both of these were set.
+
+	`.return_metadata`
+		Returns all chunks not needed to decode the data.
+		It also returns the header as if `.return_header` was set.
+
+	`.do_not_decompress_image`
+		Skip decompressing IDAT chunk, defiltering and the rest.
+
+	`.do_not_expand_grayscale`
+		Do not turn grayscale (+ Alpha) images into RGB(A).
+		Returns just the 1 or 2 channels present, although 1, 2 and 4 bit are still scaled to 8-bit.
+
+	`.do_not_expand_indexed`
+		Do not turn indexed (+ Alpha) images into RGB(A).
+		Returns just the 1 or 2 (with `tRNS`) channels present.
+		Make sure to use `return_metadata` to also return the palette chunk so you can recolor it yourself.
+
+	`.do_not_expand_channels`
+		Applies both `.do_not_expand_grayscale` and `.do_not_expand_indexed`.
+
+	`.alpha_add_if_missing`
+		If the image has no alpha channel, it'll add one set to max(type).
+		Turns RGB into RGBA and Gray into Gray+Alpha
+
+	`.alpha_drop_if_present`
+		If the image has an alpha channel, drop it.
+		You may want to use `.alpha_premultiply` in this case.
+
+		NOTE: For PNG, this also skips handling of the tRNS chunk, if present,
+		unless you select `alpha_premultiply`.
+		In this case it'll premultiply the specified pixels in question only,
+		as the others are implicitly fully opaque.	
+
+	`.alpha_premultiply`
+		If the image has an alpha channel, returns image data as follows:
+			RGB  *= A, Gray = Gray *= A
+
+	`.blend_background`
+		If a bKGD chunk is present in a PNG, we normally just set `img.background`
+		with its value and leave it up to the application to decide how to display the image,
+		as per the PNG specification.
+
+		With `.blend_background` selected, we blend the image against the background
+		color. As this negates the use for an alpha channel, we'll drop it _unless_
+		you also specify `.alpha_add_if_missing`.
+
+	Options that don't apply to an image format will be ignored by their loader.
+*/
+
+Option :: enum {
+	info = 0,
+	do_not_decompress_image,
+	return_header,
+	return_metadata,
+	alpha_add_if_missing,
+	alpha_drop_if_present,
+	alpha_premultiply,
+	blend_background,
+	// Unimplemented
+	do_not_expand_grayscale,
+	do_not_expand_indexed,
+	do_not_expand_channels,
+}
+Options :: distinct bit_set[Option];
+
+Error :: enum {
+	Invalid_PNG_Signature,
+	IHDR_Not_First_Chunk,
+	IHDR_Corrupt,
+	IDAT_Missing,
+	IDAT_Must_Be_Contiguous,
+	IDAT_Corrupt,
+	PNG_Does_Not_Adhere_to_Spec,
+	PLTE_Encountered_Unexpectedly,
+	PLTE_Invalid_Length,
+	TRNS_Encountered_Unexpectedly,
+	BKGD_Invalid_Length,
+	Invalid_Image_Dimensions,
+	Unknown_Color_Type,
+	Invalid_Color_Bit_Depth_Combo,
+	Unknown_Filter_Method,
+	Unknown_Interlace_Method,
+	Requested_Channel_Not_Present,
+	Post_Processing_Error,
+}
+
+/*
+	Functions to help with image buffer calculations
+*/
+
+compute_buffer_size :: proc(width, height, channels, depth: int, extra_row_bytes := int(0)) -> (size: int) {
+	size = ((((channels * width * depth) + 7) >> 3) + extra_row_bytes) * height;
+	return;
+}
+
+/*
+	For when you have an RGB(A) image, but want a particular channel.
+*/
+
+Channel :: enum u8 {
+	R = 1,
+	G = 2,
+	B = 3,
+	A = 4,
+}
+
+return_single_channel :: proc(img: ^Image, channel: Channel) -> (res: ^Image, ok: bool) {
+	ok = false;
+	t: bytes.Buffer;
+
+	idx := int(channel);
+
+	if img.channels == 2 && idx == 4 {
+		// Alpha requested, which in a two channel image is index 2: G.
+		idx = 2;
+	}
+
+	if idx > img.channels {
+		return {}, false;
+	}
+
+	switch img.depth {
+	case 8:
+		buffer_size := compute_buffer_size(img.width, img.height, 1, 8);
+		t = bytes.Buffer{};
+		resize(&t.buf, buffer_size);
+
+		i := bytes.buffer_to_bytes(&img.pixels);
+		o := bytes.buffer_to_bytes(&t);
+
+		for len(i) > 0 {
+			o[0] = i[idx];
+			i = i[img.channels:];
+			o = o[1:];
+		}
+	case 16:
+		buffer_size := compute_buffer_size(img.width, img.height, 2, 8);
+		t = bytes.Buffer{};
+		resize(&t.buf, buffer_size);
+
+		i := mem.slice_data_cast([]u16, img.pixels.buf[:]);
+		o := mem.slice_data_cast([]u16, t.buf[:]);
+
+		for len(i) > 0 {
+			o[0] = i[idx];
+			i = i[img.channels:];
+			o = o[1:];
+		}
+	case 1, 2, 4:
+		// We shouldn't see this case, as the loader already turns these into 8-bit.
+		return {}, false;
+	}
+
+	res = new(Image);
+	res.width         = img.width;
+	res.height        = img.height;
+	res.channels      = 1;
+	res.depth         = img.depth;
+	res.pixels        = t;
+	res.background    = img.background;
+	res.metadata_ptr  = img.metadata_ptr;
+	res.metadata_type = img.metadata_type;
+
+	return res, true;
+}

core/image/png/example.odin

@@ -0,0 +1,354 @@
+//+ignore
+package png
+
+/*
+	Copyright 2021 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-2 license.
+
+	List of contributors:
+		Jeroen van Rijn: Initial implementation.
+		Ginger Bill:     Cosmetic changes.
+
+	An example of how to use `load`.
+*/
+
+import "core:compress"
+import "core:image"
+// import "core:image/png"
+import "core:bytes"
+import "core:fmt"
+
+// For PPM writer
+import "core:mem"
+import "core:os"
+
+main :: proc() {
+	track := mem.Tracking_Allocator{};
+	mem.tracking_allocator_init(&track, context.allocator);
+
+	context.allocator = mem.tracking_allocator(&track);
+
+	demo();
+
+	if len(track.allocation_map) > 0 {
+		fmt.println("Leaks:");
+		for _, v in track.allocation_map {
+			fmt.printf("\t%v\n\n", v);
+		}
+	}
+}
+
+demo :: proc() {
+	file: string;
+
+	options := image.Options{}; // {.return_metadata};
+	err:       compress.Error;
+	img:      ^image.Image;
+
+	file = "../../../misc/logo-slim.png";
+
+	img, err = load(file, options);
+	defer destroy(img);
+
+	if err != nil {
+		fmt.printf("Trying to read PNG file %v returned %v\n", file, err);
+	} else {
+		v: ^Info;
+
+		fmt.printf("Image: %vx%vx%v, %v-bit.\n", img.width, img.height, img.channels, img.depth);
+		if img.metadata_ptr != nil && img.metadata_type == Info {
+			v = (^Info)(img.metadata_ptr);
+
+			// Handle ancillary chunks as you wish.
+			// We provide helper functions for a few types.
+			for c in v.chunks {
+				#partial switch c.header.type {
+				case .tIME:
+					t, _ := core_time(c);
+					fmt.printf("[tIME]: %v\n", t);
+				case .gAMA:
+					fmt.printf("[gAMA]: %v\n", gamma(c));
+				case .pHYs:
+					phys := phys(c);
+					if phys.unit == .Meter {
+						xm    := f32(img.width)  / f32(phys.ppu_x);
+						ym    := f32(img.height) / f32(phys.ppu_y);
+						dpi_x, dpi_y := phys_to_dpi(phys);
+						fmt.printf("[pHYs] Image resolution is %v x %v pixels per meter.\n", phys.ppu_x, phys.ppu_y);
+						fmt.printf("[pHYs] Image resolution is %v x %v DPI.\n", dpi_x, dpi_y);
+						fmt.printf("[pHYs] Image dimensions are %v x %v meters.\n", xm, ym);
+					} else {
+						fmt.printf("[pHYs] x: %v, y: %v pixels per unknown unit.\n", phys.ppu_x, phys.ppu_y);
+					}
+				case .iTXt, .zTXt, .tEXt:
+					res, ok_text := text(c);
+					if ok_text {
+						if c.header.type == .iTXt {
+							fmt.printf("[iTXt] %v (%v:%v): %v\n", res.keyword, res.language, res.keyword_localized, res.text);
+						} else {
+							fmt.printf("[tEXt/zTXt] %v: %v\n", res.keyword, res.text);
+						}
+					}
+					defer text_destroy(res);
+				case .bKGD:
+					fmt.printf("[bKGD] %v\n", img.background);
+				case .eXIf:
+					res, ok_exif := exif(c);
+					if ok_exif {
+						/*
+							Other than checking the signature and byte order, we don't handle Exif data.
+							If you wish to interpret it, pass it to an Exif parser.
+						*/
+						fmt.printf("[eXIf] %v\n", res);
+					}
+				case .PLTE:
+					plte, plte_ok := plte(c);
+					if plte_ok {
+						fmt.printf("[PLTE] %v\n", plte);
+					} else {
+						fmt.printf("[PLTE] Error\n");
+					}
+				case .hIST:
+					res, ok_hist := hist(c);
+					if ok_hist {
+						fmt.printf("[hIST] %v\n", res);
+					}
+				case .cHRM:
+					res, ok_chrm := chrm(c);
+					if ok_chrm {
+						fmt.printf("[cHRM] %v\n", res);
+					}
+				case .sPLT:
+					res, ok_splt := splt(c);
+					if ok_splt {
+						fmt.printf("[sPLT] %v\n", res);
+					}
+					splt_destroy(res);
+				case .sBIT:
+					if res, ok_sbit := sbit(c); ok_sbit {
+						fmt.printf("[sBIT] %v\n", res);
+					}
+				case .iCCP:
+					res, ok_iccp := iccp(c);
+					if ok_iccp {
+						fmt.printf("[iCCP] %v\n", res);
+					}
+					iccp_destroy(res);
+				case .sRGB:
+					if res, ok_srgb := srgb(c); ok_srgb {
+						fmt.printf("[sRGB] Rendering intent: %v\n", res);
+					}
+				case:
+					type := c.header.type;
+					name := chunk_type_to_name(&type);
+					fmt.printf("[%v]: %v\n", name, c.data);
+				}
+			}
+		}
+	}
+
+	if err == nil && .do_not_decompress_image not_in options && .info not_in options {
+		if ok := write_image_as_ppm("out.ppm", img); ok {
+			fmt.println("Saved decoded image.");
+		} else {
+			fmt.println("Error saving out.ppm.");
+			fmt.println(img);
+		}
+	}
+}
+
+// Crappy PPM writer used during testing. Don't use in production.
+write_image_as_ppm :: proc(filename: string, image: ^image.Image) -> (success: bool) {
+
+	_bg :: proc(bg: Maybe([3]u16), x, y: int, high := true) -> (res: [3]u16) {
+		if v, ok := bg.?; ok {
+			res = v;
+		} else {
+			if high {
+				l := u16(30 * 256 + 30);
+
+				if (x & 4 == 0) ~ (y & 4 == 0) {
+					res = [3]u16{l, 0, l};
+				} else {
+					res = [3]u16{l >> 1, 0, l >> 1};
+				}
+			} else {
+				if (x & 4 == 0) ~ (y & 4 == 0) {
+					res = [3]u16{30, 30, 30};
+				} else {
+					res = [3]u16{15, 15, 15};
+				}
+			}
+		}
+		return;
+	}
+
+	// profiler.timed_proc();
+	using image;
+	using os;
+
+	flags: int = O_WRONLY|O_CREATE|O_TRUNC;
+
+	img := image;
+
+	// PBM 16-bit images are big endian
+	when ODIN_ENDIAN == "little" {
+		if img.depth == 16 {
+			// The pixel components are in Big Endian. Let's byteswap back.
+			input  := mem.slice_data_cast([]u16,   img.pixels.buf[:]);
+			output := mem.slice_data_cast([]u16be, img.pixels.buf[:]);
+			#no_bounds_check for v, i in input {
+				output[i] = u16be(v);
+			}
+		}
+	}
+
+	pix := bytes.buffer_to_bytes(&img.pixels);
+
+	if len(pix) == 0 || len(pix) < image.width * image.height * int(image.channels) {
+		return false;
+	}
+
+	mode: int = 0;
+	when ODIN_OS == "linux" || ODIN_OS == "darwin" {
+		// NOTE(justasd): 644 (owner read, write; group read; others read)
+		mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
+	}
+
+	fd, err := open(filename, flags, mode);
+	if err != 0 {
+		return false;
+	}
+	defer close(fd);
+
+	write_string(fd,
+		fmt.tprintf("P6\n%v %v\n%v\n", width, height, (1 << uint(depth) - 1)),
+	);
+
+	if channels == 3 {
+		// We don't handle transparency here...
+		write_ptr(fd, raw_data(pix), len(pix));
+	} else {
+		bpp := depth == 16 ? 2 : 1;
+		bytes_needed := width * height * 3 * bpp;
+
+		op := bytes.Buffer{};
+		bytes.buffer_init_allocator(&op, bytes_needed, bytes_needed);
+		defer bytes.buffer_destroy(&op);
+
+		if channels == 1 {
+			if depth == 16 {
+				assert(len(pix) == width * height * 2);
+				p16 := mem.slice_data_cast([]u16, pix);
+				o16 := mem.slice_data_cast([]u16, op.buf[:]);
+				#no_bounds_check for len(p16) != 0 {
+					r := u16(p16[0]);
+					o16[0] = r;
+					o16[1] = r;
+					o16[2] = r;
+					p16 = p16[1:];
+					o16 = o16[3:];
+				}
+			} else {
+				o := 0;
+				for i := 0; i < len(pix); i += 1 {
+					r := pix[i];
+					op.buf[o  ] = r;
+					op.buf[o+1] = r;
+					op.buf[o+2] = r;
+					o += 3;
+				}
+			}
+			write_ptr(fd, raw_data(op.buf), len(op.buf));
+		} else if channels == 2 {
+			if depth == 16 {
+				p16 := mem.slice_data_cast([]u16, pix);
+				o16 := mem.slice_data_cast([]u16, op.buf[:]);
+
+				bgcol := img.background;
+
+				#no_bounds_check for len(p16) != 0 {
+					r  := f64(u16(p16[0]));
+					bg:   f64;
+					if bgcol != nil {
+						v := bgcol.([3]u16)[0];
+						bg = f64(v);
+					}
+					a  := f64(u16(p16[1])) / 65535.0;
+					l  := (a * r) + (1 - a) * bg;
+
+					o16[0] = u16(l);
+					o16[1] = u16(l);
+					o16[2] = u16(l);
+
+					p16 = p16[2:];
+					o16 = o16[3:];
+				}
+			} else {
+				o := 0;
+				for i := 0; i < len(pix); i += 2 {
+					r := pix[i]; a := pix[i+1]; a1 := f32(a) / 255.0;
+					c := u8(f32(r) * a1);
+					op.buf[o  ] = c;
+					op.buf[o+1] = c;
+					op.buf[o+2] = c;
+					o += 3;
+				}
+			}
+			write_ptr(fd, raw_data(op.buf), len(op.buf));
+		} else if channels == 4 {
+			if depth == 16 {
+				p16 := mem.slice_data_cast([]u16be, pix);
+				o16 := mem.slice_data_cast([]u16be, op.buf[:]);
+
+				#no_bounds_check for len(p16) != 0 {
+
+					bg := _bg(img.background, 0, 0);
+					r     := f32(p16[0]);
+					g     := f32(p16[1]);
+					b     := f32(p16[2]);
+					a     := f32(p16[3]) / 65535.0;
+
+					lr  := (a * r) + (1 - a) * f32(bg[0]);
+					lg  := (a * g) + (1 - a) * f32(bg[1]);
+					lb  := (a * b) + (1 - a) * f32(bg[2]);
+
+					o16[0] = u16be(lr);
+					o16[1] = u16be(lg);
+					o16[2] = u16be(lb);
+
+					p16 = p16[4:];
+					o16 = o16[3:];
+				}
+			} else {
+				o := 0;
+
+				for i := 0; i < len(pix); i += 4 {
+
+					x := (i / 4)  % width;
+					y := i / width / 4;
+
+					_b := _bg(img.background, x, y, false);
+					bgcol := [3]u8{u8(_b[0]), u8(_b[1]), u8(_b[2])};
+
+					r := f32(pix[i]);
+					g := f32(pix[i+1]);
+					b := f32(pix[i+2]);
+					a := f32(pix[i+3]) / 255.0;
+
+					lr := u8(f32(r) * a + (1 - a) * f32(bgcol[0]));
+					lg := u8(f32(g) * a + (1 - a) * f32(bgcol[1]));
+					lb := u8(f32(b) * a + (1 - a) * f32(bgcol[2]));
+					op.buf[o  ] = lr;
+					op.buf[o+1] = lg;
+					op.buf[o+2] = lb;
+					o += 3;
+				}
+			}
+			write_ptr(fd, raw_data(op.buf), len(op.buf));
+		} else {
+			return false;
+		}
+	}
+	return true;
+}

core/image/png/helpers.odin

@@ -0,0 +1,525 @@
+package png
+
+/*
+	Copyright 2021 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-2 license.
+
+	List of contributors:
+		Jeroen van Rijn: Initial implementation.
+		Ginger Bill:     Cosmetic changes.
+
+	These are a few useful utility functions to work with PNG images.
+*/
+
+import "core:image"
+import "core:compress/zlib"
+import coretime "core:time"
+import "core:strings"
+import "core:bytes"
+import "core:mem"
+
+/*
+	Cleanup of image-specific data.
+	There are other helpers for cleanup of PNG-specific data.
+	Those are named *_destroy, where * is the name of the helper.
+*/
+
+destroy :: proc(img: ^Image) {
+	if img == nil {
+		/*
+			Nothing to do.
+			Load must've returned with an error.
+		*/
+		return;
+	}
+
+	bytes.buffer_destroy(&img.pixels);
+	// Clean up Info.
+	free(img.metadata_ptr);
+
+	/*
+		We don't need to do anything for the individual chunks.
+		They're allocated on the temp allocator, as is info.chunks
+
+		See read_chunk.
+	*/
+	free(img);
+}
+
+/*
+	Chunk helpers
+*/
+
+gamma :: proc(c: Chunk) -> f32 {
+	assert(c.header.type == .gAMA);
+	res := (^gAMA)(raw_data(c.data))^;
+	when true {
+		// Returns the wrong result on old backend
+		// Fixed for -llvm-api
+		return f32(res.gamma_100k) / 100_000.0;
+	} else {
+		return f32(u32(res.gamma_100k)) / 100_000.0;
+	}
+}
+
+INCHES_PER_METER :: 1000.0 / 25.4;
+
+phys :: proc(c: Chunk) -> pHYs {
+	assert(c.header.type == .pHYs);
+	res := (^pHYs)(raw_data(c.data))^;
+	return res;
+}
+
+phys_to_dpi :: proc(p: pHYs) -> (x_dpi, y_dpi: f32) {
+	return f32(p.ppu_x) / INCHES_PER_METER, f32(p.ppu_y) / INCHES_PER_METER;
+}
+
+time :: proc(c: Chunk) -> tIME {
+	assert(c.header.type == .tIME);
+	res := (^tIME)(raw_data(c.data))^;
+	return res;
+}
+
+core_time :: proc(c: Chunk) -> (t: coretime.Time, ok: bool) {
+	png_time := time(c);
+	using png_time;
+	return coretime.datetime_to_time(
+		int(year), int(month), int(day),
+		int(hour), int(minute), int(second),
+	);
+}
+
+text :: proc(c: Chunk) -> (res: Text, ok: bool) {
+	#partial switch c.header.type {
+	case .tEXt:
+		ok = true;
+
+		fields := bytes.split(s=c.data, sep=[]u8{0}, allocator=context.temp_allocator);
+		if len(fields) == 2 {
+			res.keyword = strings.clone(string(fields[0]));
+			res.text    = strings.clone(string(fields[1]));
+		} else {
+			ok = false;
+		}
+		return;
+	case .zTXt:
+		ok = true;
+
+		fields := bytes.split_n(s=c.data, sep=[]u8{0}, n=3, allocator=context.temp_allocator);
+		if len(fields) != 3 || len(fields[1]) != 0 {
+			// Compression method must be 0=Deflate, which thanks to the split above turns
+			// into an empty slice
+			ok = false; return;
+		}
+
+		// Set up ZLIB context and decompress text payload.
+		buf: bytes.Buffer;
+		zlib_error := zlib.inflate_from_byte_array(fields[2], &buf);
+		defer bytes.buffer_destroy(&buf);
+		if zlib_error != nil {
+			ok = false; return;
+		}
+
+		res.keyword = strings.clone(string(fields[0]));
+		res.text = strings.clone(bytes.buffer_to_string(&buf));
+		return;
+	case .iTXt:
+		ok = true;
+
+		s := string(c.data);
+		null := strings.index_byte(s, 0);
+		if null == -1 {
+			ok = false; return;
+		}
+		if len(c.data) < null + 4 {
+			// At a minimum, including the \0 following the keyword, we require 5 more bytes.
+			ok = false;	return;
+		}
+		res.keyword = strings.clone(string(c.data[:null]));
+		rest := c.data[null+1:];
+
+		compression_flag := rest[:1][0];
+		if compression_flag > 1 {
+			ok = false; return;
+		}
+		compression_method := rest[1:2][0];
+		if compression_flag == 1 && compression_method > 0 {
+			// Only Deflate is supported
+			ok = false; return;
+		}
+		rest = rest[2:];
+
+		// We now expect an optional language keyword and translated keyword, both followed by a \0
+		null = strings.index_byte(string(rest), 0);
+		if null == -1 {
+			ok = false; return;
+		}
+		res.language = strings.clone(string(rest[:null]));
+		rest = rest[null+1:];
+
+		null = strings.index_byte(string(rest), 0);
+		if null == -1 {
+			ok = false; return;
+		}
+		res.keyword_localized = strings.clone(string(rest[:null]));
+		rest = rest[null+1:];
+		if compression_flag == 0 {
+			res.text = strings.clone(string(rest));
+		} else {
+			// Set up ZLIB context and decompress text payload.
+			buf: bytes.Buffer;
+			zlib_error := zlib.inflate_from_byte_array(rest, &buf);
+			defer bytes.buffer_destroy(&buf);
+			if zlib_error != nil {
+
+				ok = false; return;
+			}
+
+			res.text = strings.clone(bytes.buffer_to_string(&buf));
+		}
+		return;
+	case:
+		// PNG text helper called with an unrecognized chunk type.
+		ok = false; return;
+	}
+}
+
+text_destroy :: proc(text: Text) {
+	delete(text.keyword);
+	delete(text.keyword_localized);
+	delete(text.language);
+	delete(text.text);
+}
+
+iccp :: proc(c: Chunk) -> (res: iCCP, ok: bool) {
+	ok = true;
+
+	fields := bytes.split_n(s=c.data, sep=[]u8{0}, n=3, allocator=context.temp_allocator);
+
+	if len(fields[0]) < 1 || len(fields[0]) > 79 {
+		// Invalid profile name
+		ok = false; return;
+	}
+
+	if len(fields[1]) != 0 {
+		// Compression method should be a zero, which the split turned into an empty slice.
+		ok = false; return;
+	}
+
+	// Set up ZLIB context and decompress iCCP payload
+	buf: bytes.Buffer;
+	zlib_error := zlib.inflate_from_byte_array(fields[2], &buf);
+	if zlib_error != nil {
+		bytes.buffer_destroy(&buf);
+		ok = false; return;
+	}
+
+	res.name = strings.clone(string(fields[0]));
+	res.profile = bytes.buffer_to_bytes(&buf);
+
+	return;
+}
+
+iccp_destroy :: proc(i: iCCP) {
+	delete(i.name);
+
+	delete(i.profile);
+
+}
+
+srgb :: proc(c: Chunk) -> (res: sRGB, ok: bool) {
+	ok = true;
+
+	if c.header.type != .sRGB || len(c.data) != 1 {
+		return {}, false;
+	}
+
+	res.intent = sRGB_Rendering_Intent(c.data[0]);
+	if res.intent > max(sRGB_Rendering_Intent) {
+		ok = false; return;
+	}
+	return;
+}
+
+plte :: proc(c: Chunk) -> (res: PLTE, ok: bool) {
+	if c.header.type != .PLTE {
+		return {}, false;
+	}
+
+	i := 0; j := 0; ok = true;
+	for j < int(c.header.length) {
+		res.entries[i] = {c.data[j], c.data[j+1], c.data[j+2]};
+		i += 1; j += 3;
+	}
+	res.used = u16(i);
+	return;
+}
+
+splt :: proc(c: Chunk) -> (res: sPLT, ok: bool) {
+	if c.header.type != .sPLT {
+		return {}, false;
+	}
+	ok = true;
+
+	fields := bytes.split_n(s=c.data, sep=[]u8{0}, n=2, allocator=context.temp_allocator);
+	if len(fields) != 2 {
+		return {}, false;
+	}
+
+	res.depth = fields[1][0];
+	if res.depth != 8 && res.depth != 16 {
+		return {}, false;
+	}
+
+	data := fields[1][1:];
+	count: int;
+
+	if res.depth == 8 {
+		if len(data) % 6 != 0 {
+			return {}, false;
+		}
+		count = len(data) / 6;
+		if count > 256 {
+			return {}, false;
+		}
+
+		res.entries = mem.slice_data_cast([][4]u8, data);
+	} else { // res.depth == 16
+		if len(data) % 10 != 0 {
+			return {}, false;
+		}
+		count = len(data) / 10;
+		if count > 256 {
+			return {}, false;
+		}
+
+		res.entries = mem.slice_data_cast([][4]u16, data);
+	}
+
+	res.name = strings.clone(string(fields[0]));
+	res.used = u16(count);
+
+	return;
+}
+
+splt_destroy :: proc(s: sPLT) {
+	delete(s.name);
+}
+
+sbit :: proc(c: Chunk) -> (res: [4]u8, ok: bool) {
+	/*
+		Returns [4]u8 with the significant bits in each channel.
+		A channel will contain zero if not applicable to the PNG color type.
+	*/
+
+	if len(c.data) < 1 || len(c.data) > 4 {
+		ok = false; return;
+	}
+	ok = true;
+
+	for i := 0; i < len(c.data); i += 1 {
+		res[i] = c.data[i];
+	}
+	return;
+
+}
+
+hist :: proc(c: Chunk) -> (res: hIST, ok: bool) {
+	if c.header.type != .hIST {
+		return {}, false;
+	}
+	if c.header.length & 1 == 1 || c.header.length > 512 {
+		// The entries are u16be, so the length must be even.
+		// At most 256 entries must be present
+		return {}, false;
+	}
+
+	ok = true;
+	data := mem.slice_data_cast([]u16be, c.data);
+	i := 0;
+	for len(data) > 0 {
+		// HIST entries are u16be, we unpack them to machine format
+		res.entries[i] = u16(data[0]);
+		i += 1; data = data[1:];
+	}
+	res.used = u16(i);
+	return;
+}
+
+chrm :: proc(c: Chunk) -> (res: cHRM, ok: bool) {
+	ok = true;
+	if c.header.length != size_of(cHRM_Raw) {
+		return {}, false;
+	}
+	chrm := (^cHRM_Raw)(raw_data(c.data))^;
+
+	res.w.x = f32(chrm.w.x) / 100_000.0;
+	res.w.y = f32(chrm.w.y) / 100_000.0;
+	res.r.x = f32(chrm.r.x) / 100_000.0;
+	res.r.y = f32(chrm.r.y) / 100_000.0;
+	res.g.x = f32(chrm.g.x) / 100_000.0;
+	res.g.y = f32(chrm.g.y) / 100_000.0;
+	res.b.x = f32(chrm.b.x) / 100_000.0;
+	res.b.y = f32(chrm.b.y) / 100_000.0;
+	return;
+}
+
+exif :: proc(c: Chunk) -> (res: Exif, ok: bool) {
+
+	ok = true;
+
+	if len(c.data) < 4 {
+		ok = false; return;
+	}
+
+	if c.data[0] == 'M' && c.data[1] == 'M' {
+		res.byte_order = .big_endian;
+		if c.data[2] != 0 || c.data[3] != 42 {
+			ok = false; return;
+		}
+	} else if c.data[0] == 'I' && c.data[1] == 'I' {
+		res.byte_order = .little_endian;
+		if c.data[2] != 42 || c.data[3] != 0 {
+			ok = false; return;
+		}
+	} else {
+		ok = false; return;
+	}
+
+	res.data = c.data;
+	return;
+}
+
+/*
+	General helper functions
+*/
+
+compute_buffer_size :: image.compute_buffer_size;
+
+/*
+	PNG save helpers
+*/
+
+when false {
+
+	make_chunk :: proc(c: any, t: Chunk_Type) -> (res: Chunk) {
+
+		data: []u8;
+		if v, ok := c.([]u8); ok {
+			data = v;
+		} else {
+			data = mem.any_to_bytes(c);
+		}
+
+		res.header.length = u32be(len(data));
+		res.header.type   = t;
+		res.data   = data;
+
+		// CRC the type
+		crc    := hash.crc32(mem.any_to_bytes(res.header.type));
+		// Extend the CRC with the data
+		res.crc = u32be(hash.crc32(data, crc));
+		return;
+	}
+
+	write_chunk :: proc(fd: os.Handle, chunk: Chunk) {
+		c := chunk;
+		// Write length + type
+		os.write_ptr(fd, &c.header, 8);
+		// Write data
+		os.write_ptr(fd, mem.raw_data(c.data), int(c.header.length));
+		// Write CRC32
+		os.write_ptr(fd, &c.crc, 4);
+	}
+
+	write_image_as_png :: proc(filename: string, image: Image) -> (err: Error) {
+		profiler.timed_proc();
+		using image;
+		using os;
+		flags: int = O_WRONLY|O_CREATE|O_TRUNC;
+
+		if len(image.pixels) == 0 || len(image.pixels) < image.width * image.height * int(image.channels) {
+			return E_PNG.Invalid_Image_Dimensions;
+		}
+
+		mode: int = 0;
+		when ODIN_OS == "linux" || ODIN_OS == "darwin" {
+			// NOTE(justasd): 644 (owner read, write; group read; others read)
+			mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
+		}
+
+		fd, fderr := open(filename, flags, mode);
+		if fderr != 0 {
+			return E_General.Cannot_Open_File;
+		}
+		defer close(fd);
+
+		magic := Signature;
+
+		write_ptr(fd, &magic, 8);
+
+		ihdr := IHDR{
+			width              = u32be(width),
+			height             = u32be(height),
+			bit_depth          = depth,
+			compression_method = 0,
+			filter_method      = 0,
+			interlace_method   = .None,
+		};
+
+		switch channels {
+		case 1: ihdr.color_type = Color_Type{};
+		case 2: ihdr.color_type = Color_Type{.Alpha};
+		case 3: ihdr.color_type = Color_Type{.Color};
+		case 4: ihdr.color_type = Color_Type{.Color, .Alpha};
+		case:// Unhandled
+			return E_PNG.Unknown_Color_Type;
+		}
+		h := make_chunk(ihdr, .IHDR);
+		write_chunk(fd, h);
+
+		bytes_needed := width * height * int(channels) + height;
+		filter_bytes := mem.make_dynamic_array_len_cap([dynamic]u8, bytes_needed, bytes_needed, context.allocator);
+		defer delete(filter_bytes);
+
+		i := 0; j := 0;
+		// Add a filter byte 0 per pixel row
+		for y := 0; y < height; y += 1 {
+			filter_bytes[j] = 0; j += 1;
+			for x := 0; x < width; x += 1 {
+				for z := 0; z < channels; z += 1 {
+					filter_bytes[j+z] = image.pixels[i+z];
+				}
+				i += channels; j += channels;
+			}
+		}
+		assert(j == bytes_needed);
+
+		a: []u8 = filter_bytes[:];
+
+		out_buf: ^[dynamic]u8;
+		defer free(out_buf);
+
+		ctx := zlib.ZLIB_Context{
+			in_buf  = &a,
+			out_buf = out_buf,
+		};
+		err = zlib.write_zlib_stream_from_memory(&ctx);
+
+		b: []u8;
+		if err == nil {
+			b = ctx.out_buf[:];
+		} else {
+			return err;
+		}
+
+		idat := make_chunk(b, .IDAT);
+
+		write_chunk(fd, idat);
+
+		iend := make_chunk([]u8{}, .IEND);
+		write_chunk(fd, iend);
+
+		return nil;
+	}
+}

core/intrinsics/intrinsics.odin

@@ -0,0 +1,187 @@
+// This is purely for documentation
+//+ignore
+package intrinsics
+
+// Types
+simd_vector :: proc($N: int, $T: typeid) -> type/#simd[N]T
+soa_struct :: proc($N: int, $T: typeid) -> type/#soa[N]T
+
+// Volatile
+volatile_load  :: proc(dst: ^$T) -> T ---
+volatile_store :: proc(dst: ^$T, val: T) -> T ---
+
+// Trapping
+debug_trap :: proc() ---
+trap       :: proc() -> ! ---
+
+// Instructions
+
+alloca             :: proc(size, align: int) -> ^u8 ---
+cpu_relax          :: proc() ---
+read_cycle_counter :: proc() -> i64 ---
+
+count_ones           :: proc(x: $T) -> T where type_is_integer(T) ---
+count_zeros          :: proc(x: $T) -> T where type_is_integer(T) ---
+count_trailing_zeros :: proc(x: $T) -> T where type_is_integer(T) ---
+count_leading_zeros  :: proc(x: $T) -> T where type_is_integer(T) ---
+reverse_bits         :: proc(x: $T) -> T where type_is_integer(T) ---
+byte_swap            :: proc(x: $T) -> T where type_is_integer(T) || type_is_float(T) ---
+
+overflow_add :: proc(lhs, rhs: $T) -> (T, bool) #optional_ok ---
+overflow_sub :: proc(lhs, rhs: $T) -> (T, bool) #optional_ok ---
+overflow_mul :: proc(lhs, rhs: $T) -> (T, bool) #optional_ok ---
+
+sqrt :: proc(x: $T) -> T where type_is_float(T) ---
+
+mem_copy                 :: proc(dst, src: rawptr, len: int) ---
+mem_copy_non_overlapping :: proc(dst, src: rawptr, len: int) ---
+mem_zero                 :: proc(ptr: rawptr, len: int) ---
+
+
+fixed_point_mul     :: proc(lhs, rhs: $T, #const scale: uint) -> T where type_is_integer(T) ---
+fixed_point_div     :: proc(lhs, rhs: $T, #const scale: uint) -> T where type_is_integer(T) ---
+fixed_point_mul_sat :: proc(lhs, rhs: $T, #const scale: uint) -> T where type_is_integer(T) ---
+fixed_point_div_sat :: proc(lhs, rhs: $T, #const scale: uint) -> T where type_is_integer(T) ---
+
+// Compiler Hints
+expect :: proc(val, expected_val: T) -> T ---
+
+
+// Atomics
+atomic_fence        :: proc() ---
+atomic_fence_acq    :: proc() ---
+atomic_fence_rel    :: proc() ---
+atomic_fence_acqrel :: proc() ---
+
+atomic_store           :: proc(dst: ^$T, val: T) ---
+atomic_store_rel       :: proc(dst: ^$T, val: T) ---
+atomic_store_relaxed   :: proc(dst: ^$T, val: T) ---
+atomic_store_unordered :: proc(dst: ^$T, val: T) ---
+
+atomic_load           :: proc(dst: ^$T) -> T ---
+atomic_load_acq       :: proc(dst: ^$T) -> T ---
+atomic_load_relaxed   :: proc(dst: ^$T) -> T ---
+atomic_load_unordered :: proc(dst: ^$T) -> T ---
+
+atomic_add          :: proc(dst; ^$T, val: T) -> T ---
+atomic_add_acq      :: proc(dst; ^$T, val: T) -> T ---
+atomic_add_rel      :: proc(dst; ^$T, val: T) -> T ---
+atomic_add_acqrel   :: proc(dst; ^$T, val: T) -> T ---
+atomic_add_relaxed  :: proc(dst; ^$T, val: T) -> T ---
+atomic_sub          :: proc(dst; ^$T, val: T) -> T ---
+atomic_sub_acq      :: proc(dst; ^$T, val: T) -> T ---
+atomic_sub_rel      :: proc(dst; ^$T, val: T) -> T ---
+atomic_sub_acqrel   :: proc(dst; ^$T, val: T) -> T ---
+atomic_sub_relaxed  :: proc(dst; ^$T, val: T) -> T ---
+atomic_and          :: proc(dst; ^$T, val: T) -> T ---
+atomic_and_acq      :: proc(dst; ^$T, val: T) -> T ---
+atomic_and_rel      :: proc(dst; ^$T, val: T) -> T ---
+atomic_and_acqrel   :: proc(dst; ^$T, val: T) -> T ---
+atomic_and_relaxed  :: proc(dst; ^$T, val: T) -> T ---
+atomic_nand         :: proc(dst; ^$T, val: T) -> T ---
+atomic_nand_acq     :: proc(dst; ^$T, val: T) -> T ---
+atomic_nand_rel     :: proc(dst; ^$T, val: T) -> T ---
+atomic_nand_acqrel  :: proc(dst; ^$T, val: T) -> T ---
+atomic_nand_relaxed :: proc(dst; ^$T, val: T) -> T ---
+atomic_or           :: proc(dst; ^$T, val: T) -> T ---
+atomic_or_acq       :: proc(dst; ^$T, val: T) -> T ---
+atomic_or_rel       :: proc(dst; ^$T, val: T) -> T ---
+atomic_or_acqrel    :: proc(dst; ^$T, val: T) -> T ---
+atomic_or_relaxed   :: proc(dst; ^$T, val: T) -> T ---
+atomic_xor          :: proc(dst; ^$T, val: T) -> T ---
+atomic_xor_acq      :: proc(dst; ^$T, val: T) -> T ---
+atomic_xor_rel      :: proc(dst; ^$T, val: T) -> T ---
+atomic_xor_acqrel   :: proc(dst; ^$T, val: T) -> T ---
+atomic_xor_relaxed  :: proc(dst; ^$T, val: T) -> T ---
+
+atomic_xchg         :: proc(dst; ^$T, val: T) -> T ---
+atomic_xchg_acq     :: proc(dst; ^$T, val: T) -> T ---
+atomic_xchg_rel     :: proc(dst; ^$T, val: T) -> T ---
+atomic_xchg_acqrel  :: proc(dst; ^$T, val: T) -> T ---
+atomic_xchg_relaxed :: proc(dst; ^$T, val: T) -> T ---
+
+atomic_cxchg                    :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchg_acq                :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchg_rel                :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchg_acqrel             :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchg_relaxed            :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchg_failrelaxed        :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchg_failacq            :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchg_acq_failrelaxed    :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchg_acqrel_failrelaxed :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+
+atomic_cxchgweak                    :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchgweak_acq                :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchgweak_rel                :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchgweak_acqrel             :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchgweak_relaxed            :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchgweak_failrelaxed        :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchgweak_failacq            :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchgweak_acq_failrelaxed    :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+atomic_cxchgweak_acqrel_failrelaxed :: proc(dst: ^$T, old, new: T) -> (T, bool) #optional_ok ---
+
+// Constant type tests
+
+type_base_type :: proc($T: typeid) -> type ---
+type_core_type :: proc($T: typeid) -> type ---
+type_elem_type :: proc($T: typeid) -> type ---
+
+type_is_boolean    :: proc($T: typeid) -> bool ---
+type_is_integer    :: proc($T: typeid) -> bool ---
+type_is_rune       :: proc($T: typeid) -> bool ---
+type_is_float      :: proc($T: typeid) -> bool ---
+type_is_complex    :: proc($T: typeid) -> bool ---
+type_is_quaternion :: proc($T: typeid) -> bool ---
+type_is_string     :: proc($T: typeid) -> bool ---
+type_is_typeid     :: proc($T: typeid) -> bool ---
+type_is_any        :: proc($T: typeid) -> bool ---
+
+type_is_endian_platform :: proc($T: typeid) -> bool ---
+type_is_endian_little   :: proc($T: typeid) -> bool ---
+type_is_endian_big      :: proc($T: typeid) -> bool ---
+type_is_unsigned        :: proc($T: typeid) -> bool ---
+type_is_numeric         :: proc($T: typeid) -> bool ---
+type_is_ordered         :: proc($T: typeid) -> bool ---
+type_is_ordered_numeric :: proc($T: typeid) -> bool ---
+type_is_indexable       :: proc($T: typeid) -> bool ---
+type_is_sliceable       :: proc($T: typeid) -> bool ---
+type_is_comparable      :: proc($T: typeid) -> bool ---
+type_is_simple_compare  :: proc($T: typeid) -> bool --- // easily compared using memcmp (== and !=)
+type_is_dereferenceable :: proc($T: typeid) -> bool ---
+type_is_valid_map_key   :: proc($T: typeid) -> bool ---
+
+type_is_named            :: proc($T: typeid) -> bool ---
+type_is_pointer          :: proc($T: typeid) -> bool ---
+type_is_array            :: proc($T: typeid) -> bool ---
+type_is_enumerated_array :: proc($T: typeid) -> bool ---
+type_is_slice            :: proc($T: typeid) -> bool ---
+type_is_dynamic_array    :: proc($T: typeid) -> bool ---
+type_is_map              :: proc($T: typeid) -> bool ---
+type_is_struct           :: proc($T: typeid) -> bool ---
+type_is_union            :: proc($T: typeid) -> bool ---
+type_is_enum             :: proc($T: typeid) -> bool ---
+type_is_proc             :: proc($T: typeid) -> bool ---
+type_is_bit_set          :: proc($T: typeid) -> bool ---
+type_is_simd_vector      :: proc($T: typeid) -> bool ---
+
+type_has_nil :: proc($T: typeid) -> bool ---
+
+type_is_specialization_of :: proc($T, $S: typeid) -> bool ---
+type_is_variant_of :: proc($U, $V: typeid) -> bool where type_is_union(U) ---
+
+type_has_field :: proc($T: typeid, $name: string) -> bool ---
+
+type_proc_parameter_count :: proc($T: typeid) -> int where type_is_proc(T) ---
+type_proc_return_count    :: proc($T: typeid) -> int where type_is_proc(T) ---
+
+type_proc_parameter_type  :: proc($T: typeid, index: int) -> typeid where type_is_proc(T) ---
+type_proc_return_type     :: proc($T: typeid, index: int) -> typeid where type_is_proc(T) ---
+
+type_polymorphic_record_parameter_count :: proc($T: typeid) -> typeid ---
+type_polymorphic_record_parameter_value :: proc($T: typeid, index: int) -> $V ---
+
+
+type_field_index_of :: proc($T: typeid, $name: string) -> uintptr ---
+
+type_equal_proc  :: proc($T: typeid) -> (equal:  proc "contextless" (rawptr, rawptr) -> bool)                 where type_is_comparable(T) ---
+type_hasher_proc :: proc($T: typeid) -> (hasher: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr) where type_is_comparable(T) ---

core/io/conv.odin

@@ -0,0 +1,194 @@
+package io
+
+to_reader :: proc(s: Stream) -> (r: Reader, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable == nil || s.impl_read == nil {
+		ok = false;
+	}
+	return;
+}
+to_writer :: proc(s: Stream) -> (w: Writer, ok: bool = true) {
+	w.stream = s;
+	if s.stream_vtable == nil || s.impl_write == nil {
+		ok = false;
+	}
+	return;
+}
+
+to_closer :: proc(s: Stream) -> (c: Closer, ok: bool = true) {
+	c.stream = s;
+	if s.stream_vtable == nil || s.impl_close == nil {
+		ok = false;
+	}
+	return;
+}
+to_flusher :: proc(s: Stream) -> (f: Flusher, ok: bool = true) {
+	f.stream = s;
+	if s.stream_vtable == nil || s.impl_flush == nil {
+		ok = false;
+	}
+	return;
+}
+to_seeker :: proc(s: Stream) -> (seeker: Seeker, ok: bool = true) {
+	seeker.stream = s;
+	if s.stream_vtable == nil || s.impl_seek == nil {
+		ok = false;
+	}
+	return;
+}
+
+to_read_writer :: proc(s: Stream) -> (r: Read_Writer, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable == nil || s.impl_read == nil || s.impl_write == nil {
+		ok = false;
+	}
+	return;
+}
+to_read_closer :: proc(s: Stream) -> (r: Read_Closer, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable == nil || s.impl_read == nil || s.impl_close == nil {
+		ok = false;
+	}
+	return;
+}
+to_read_write_closer :: proc(s: Stream) -> (r: Read_Write_Closer, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable == nil || s.impl_read == nil || s.impl_write == nil || s.impl_close == nil {
+		ok = false;
+	}
+	return;
+}
+to_read_write_seeker :: proc(s: Stream) -> (r: Read_Write_Seeker, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable == nil || s.impl_read == nil || s.impl_write == nil || s.impl_seek == nil {
+		ok = false;
+	}
+	return;
+}
+to_write_flusher :: proc(s: Stream) -> (w: Write_Flusher, ok: bool = true) {
+	w.stream = s;
+	if s.stream_vtable == nil || s.impl_write == nil || s.impl_flush == nil {
+		ok = false;
+	}
+	return;
+}
+to_write_flush_closer :: proc(s: Stream) -> (w: Write_Flush_Closer, ok: bool = true) {
+	w.stream = s;
+	if s.stream_vtable == nil || s.impl_write == nil || s.impl_flush == nil || s.impl_close == nil {
+		ok = false;
+	}
+	return;
+}
+
+to_reader_at :: proc(s: Stream) -> (r: Reader_At, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable == nil || s.impl_read_at == nil {
+		ok = false;
+	}
+	return;
+}
+to_writer_at :: proc(s: Stream) -> (w: Writer_At, ok: bool = true) {
+	w.stream = s;
+	if s.stream_vtable == nil || s.impl_write_at == nil {
+		ok = false;
+	}
+	return;
+}
+to_reader_from :: proc(s: Stream) -> (r: Reader_From, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable == nil || s.impl_read_from == nil {
+		ok = false;
+	}
+	return;
+}
+to_writer_to :: proc(s: Stream) -> (w: Writer_To, ok: bool = true) {
+	w.stream = s;
+	if s.stream_vtable == nil || s.impl_write_to == nil {
+		ok = false;
+	}
+	return;
+}
+to_write_closer :: proc(s: Stream) -> (w: Write_Closer, ok: bool = true) {
+	w.stream = s;
+	if s.stream_vtable == nil || s.impl_write == nil || s.impl_close == nil {
+		ok = false;
+	}
+	return;
+}
+to_write_seeker :: proc(s: Stream) -> (w: Write_Seeker, ok: bool = true) {
+	w.stream = s;
+	if s.stream_vtable == nil || s.impl_write == nil || s.impl_seek == nil {
+		ok = false;
+	}
+	return;
+}
+
+
+to_byte_reader :: proc(s: Stream) -> (b: Byte_Reader, ok: bool = true) {
+	b.stream = s;
+	if s.stream_vtable == nil || s.impl_read_byte == nil {
+		ok = false;
+		if s.stream_vtable != nil && s.impl_read != nil {
+			ok = true;
+		}
+	}
+	return;
+}
+to_byte_scanner :: proc(s: Stream) -> (b: Byte_Scanner, ok: bool = true) {
+	b.stream = s;
+	if s.stream_vtable != nil {
+		if s.impl_unread_byte == nil {
+			ok = false;
+			return;
+		}
+		if s.impl_read_byte != nil {
+			ok = true;
+		} else if s.impl_read != nil {
+			ok = true;
+		} else {
+			ok = false;
+		}
+	}
+	return;
+}
+to_byte_writer :: proc(s: Stream) -> (b: Byte_Writer, ok: bool = true) {
+	b.stream = s;
+	if s.stream_vtable == nil || s.impl_write_byte == nil {
+		ok = false;
+		if s.stream_vtable != nil && s.impl_write != nil {
+			ok = true;
+		}
+	}
+	return;
+}
+
+to_rune_reader :: proc(s: Stream) -> (r: Rune_Reader, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable == nil || s.impl_read_rune == nil {
+		ok = false;
+		if s.stream_vtable != nil && s.impl_read != nil {
+			ok = true;
+		}
+	}
+	return;
+
+}
+to_rune_scanner :: proc(s: Stream) -> (r: Rune_Scanner, ok: bool = true) {
+	r.stream = s;
+	if s.stream_vtable != nil {
+		if s.impl_unread_rune == nil {
+			ok = false;
+			return;
+		}
+		if s.impl_read_rune != nil {
+			ok = true;
+		} else if s.impl_read != nil {
+			ok = true;
+		} else {
+			ok = false;
+		}
+	} else {
+		ok = false;
+	}
+	return;
+}

core/io/io.odin

@@ -0,0 +1,514 @@
+package io
+
+import "intrinsics"
+import "core:runtime"
+import "core:unicode/utf8"
+
+Seek_From :: enum {
+	Start   = 0, // seek relative to the origin of the file
+	Current = 1, // seek relative to the current offset
+	End     = 2, // seek relative to the end
+}
+
+Error :: enum i32 {
+	// No Error
+	None = 0,
+
+	// EOF is the error returned by `read` when no more input is available
+	EOF,
+
+	// Unexpected_EOF means that EOF was encountered in the middle of reading a fixed-sized block of data
+	Unexpected_EOF,
+
+	// Short_Write means that a write accepted fewer bytes than requested but failed to return an explicit error
+	Short_Write,
+
+	// Invalid_Write means that a write returned an impossible count
+	Invalid_Write,
+
+	// Short_Buffer means that a read required a longer buffer than was provided
+	Short_Buffer,
+
+	// No_Progress is returned by some implementations of `io.Reader` when many calls
+	// to `read` have failed to return any data or error.
+	// This is usually a signed of a broken `io.Reader` implementation
+	No_Progress,
+
+	Invalid_Whence,
+	Invalid_Offset,
+	Invalid_Unread,
+
+	Negative_Read,
+	Negative_Write,
+	Negative_Count,
+	Buffer_Full,
+
+	// Unknown means that an error has occurred but cannot be categorized
+	Unknown,
+
+	// Empty is returned when a procedure has not been implemented for an io.Stream
+	Empty = -1,
+}
+
+Close_Proc       :: proc(using s: Stream) -> Error;
+Flush_Proc       :: proc(using s: Stream) -> Error;
+Seek_Proc        :: proc(using s: Stream, offset: i64, whence: Seek_From) -> (n: i64, err: Error);
+Size_Proc        :: proc(using s: Stream) -> i64;
+Read_Proc        :: proc(using s: Stream, p: []byte) -> (n: int, err: Error);
+Read_At_Proc     :: proc(using s: Stream, p: []byte, off: i64) -> (n: int, err: Error);
+Read_From_Proc   :: proc(using s: Stream, r: Reader) -> (n: i64, err: Error);
+Read_Byte_Proc   :: proc(using s: Stream) -> (byte, Error);
+Read_Rune_Proc   :: proc(using s: Stream) -> (ch: rune, size: int, err: Error);
+Unread_Byte_Proc :: proc(using s: Stream) -> Error;
+Unread_Rune_Proc :: proc(using s: Stream) -> Error;
+Write_Proc       :: proc(using s: Stream, p: []byte) -> (n: int, err: Error);
+Write_At_Proc    :: proc(using s: Stream, p: []byte, off: i64) -> (n: int, err: Error);
+Write_To_Proc    :: proc(using s: Stream, w: Writer) -> (n: i64, err: Error);
+Write_Byte_Proc  :: proc(using s: Stream, c: byte) -> Error;
+Write_Rune_Proc  :: proc(using s: Stream, r: rune) -> (size: int, err: Error);
+Destroy_Proc     :: proc(using s: Stream) -> Error;
+
+
+Stream :: struct {
+	using stream_vtable: ^Stream_VTable,
+	stream_data:         rawptr,
+}
+Stream_VTable :: struct {
+	impl_close: Close_Proc,
+	impl_flush: Flush_Proc,
+
+	impl_seek:  Seek_Proc,
+	impl_size:  Size_Proc,
+
+	impl_read:      Read_Proc,
+	impl_read_at:   Read_At_Proc,
+	impl_read_byte: Read_Byte_Proc,
+	impl_read_rune: Read_Rune_Proc,
+	impl_write_to:  Write_To_Proc,
+
+	impl_write:      Write_Proc,
+	impl_write_at:   Write_At_Proc,
+	impl_write_byte: Write_Byte_Proc,
+	impl_write_rune: Write_Rune_Proc,
+	impl_read_from:  Read_From_Proc,
+
+	impl_unread_byte: Unread_Byte_Proc,
+	impl_unread_rune: Unread_Rune_Proc,
+
+	impl_destroy: Destroy_Proc,
+}
+
+
+Reader             :: struct {using stream: Stream};
+Writer             :: struct {using stream: Stream};
+Closer             :: struct {using stream: Stream};
+Flusher            :: struct {using stream: Stream};
+Seeker             :: struct {using stream: Stream};
+
+Read_Writer        :: struct {using stream: Stream};
+Read_Closer        :: struct {using stream: Stream};
+Read_Write_Closer  :: struct {using stream: Stream};
+Read_Write_Seeker  :: struct {using stream: Stream};
+
+Write_Closer       :: struct {using stream: Stream};
+Write_Seeker       :: struct {using stream: Stream};
+Write_Flusher      :: struct {using stream: Stream};
+Write_Flush_Closer :: struct {using stream: Stream};
+
+Reader_At          :: struct {using stream: Stream};
+Writer_At          :: struct {using stream: Stream};
+Reader_From        :: struct {using stream: Stream};
+Writer_To          :: struct {using stream: Stream};
+
+Byte_Reader        :: struct {using stream: Stream};
+Byte_Scanner       :: struct {using stream: Stream};
+Byte_Writer        :: struct {using stream: Stream};
+
+Rune_Reader        :: struct {using stream: Stream};
+Rune_Scanner       :: struct {using stream: Stream};
+
+
+destroy :: proc(s: Stream) -> Error {
+	close_err := close({s});
+	if s.stream_vtable != nil && s.impl_destroy != nil {
+		return s->impl_destroy();
+	}
+	if close_err != .None {
+		return close_err;
+	}
+	return .Empty;
+}
+
+read :: proc(s: Reader, p: []byte) -> (n: int, err: Error) {
+	if s.stream_vtable != nil && s.impl_read != nil {
+		return s->impl_read(p);
+	}
+	return 0, .Empty;
+}
+
+write :: proc(s: Writer, p: []byte) -> (n: int, err: Error) {
+	if s.stream_vtable != nil && s.impl_write != nil {
+		return s->impl_write(p);
+	}
+	return 0, .Empty;
+}
+
+seek :: proc(s: Seeker, offset: i64, whence: Seek_From) -> (n: i64, err: Error) {
+	if s.stream_vtable != nil && s.impl_seek != nil {
+		return s->impl_seek(offset, whence);
+	}
+	return 0, .Empty;
+}
+
+close :: proc(s: Closer) -> Error {
+	if s.stream_vtable != nil && s.impl_close != nil {
+		return s->impl_close();
+	}
+	// Instead of .Empty, .None is fine in this case
+	return .None;
+}
+
+flush :: proc(s: Flusher) -> Error {
+	if s.stream_vtable != nil && s.impl_flush != nil {
+		return s->impl_flush();
+	}
+	// Instead of .Empty, .None is fine in this case
+	return .None;
+}
+
+size :: proc(s: Stream) -> i64 {
+	if s.stream_vtable == nil {
+		return 0;
+	}
+	if s.impl_size != nil {
+		return s->impl_size();
+	}
+	if s.impl_seek == nil {
+		return 0;
+	}
+
+	curr, end: i64;
+	err: Error;
+	if curr, err = s->impl_seek(0, .Current); err != nil {
+		return 0;
+	}
+
+	if end, err = s->impl_seek(0, .End); err != nil {
+		return 0;
+	}
+
+	if _, err = s->impl_seek(curr, .Start); err != nil {
+		return 0;
+	}
+
+	return end;
+}
+
+
+
+
+read_at :: proc(r: Reader_At, p: []byte, offset: i64) -> (n: int, err: Error) {
+	if r.stream_vtable == nil {
+		return 0, .Empty;
+	}
+	if r.impl_read_at != nil {
+		return r->impl_read_at(p, offset);
+	}
+	if r.impl_seek == nil || r.impl_read == nil {
+		return 0, .Empty;
+	}
+
+	curr_offset: i64;
+	curr_offset, err = r->impl_seek(offset, .Current);
+	if err != nil {
+		return 0, err;
+	}
+
+	n, err = r->impl_read(p);
+	_, err1 := r->impl_seek(curr_offset, .Start);
+	if err1 != nil && err == nil {
+		err = err1;
+	}
+	return;
+
+}
+
+write_at :: proc(w: Writer_At, p: []byte, offset: i64) -> (n: int, err: Error) {
+	if w.stream_vtable == nil {
+		return 0, .Empty;
+	}
+	if w.impl_write_at != nil {
+		return w->impl_write_at(p, offset);
+	}
+	if w.impl_seek == nil || w.impl_write == nil {
+		return 0, .Empty;
+	}
+
+	curr_offset: i64;
+	curr_offset, err = w->impl_seek(offset, .Current);
+	if err != nil {
+		return 0, err;
+	}
+
+	n, err = w->impl_write(p);
+	_, err1 := w->impl_seek(curr_offset, .Start);
+	if err1 != nil && err == nil {
+		err = err1;
+	}
+	return;
+}
+
+write_to :: proc(r: Writer_To, w: Writer) -> (n: i64, err: Error) {
+	if r.stream_vtable == nil || w.stream_vtable == nil {
+		return 0, .Empty;
+	}
+	if r.impl_write_to != nil {
+		return r->impl_write_to(w);
+	}
+	return 0, .Empty;
+}
+read_from :: proc(w: Reader_From, r: Reader) -> (n: i64, err: Error) {
+	if r.stream_vtable == nil || w.stream_vtable == nil {
+		return 0, .Empty;
+	}
+	if r.impl_read_from != nil {
+		return w->impl_read_from(r);
+	}
+	return 0, .Empty;
+}
+
+
+read_byte :: proc(r: Byte_Reader) -> (byte, Error) {
+	if r.stream_vtable == nil {
+		return 0, .Empty;
+	}
+	if r.impl_read_byte != nil {
+		return r->impl_read_byte();
+	}
+	if r.impl_read == nil {
+		return 0, .Empty;
+	}
+
+	b: [1]byte;
+	_, err := r->impl_read(b[:]);
+	return b[0], err;
+}
+
+write_byte :: proc{
+	write_byte_to_byte_writer,
+	write_byte_to_writer,
+};
+
+write_byte_to_byte_writer :: proc(w: Byte_Writer, c: byte) -> Error {
+	return _write_byte(w, c);
+}
+
+write_byte_to_writer :: proc(w: Writer, c: byte) -> Error {
+	return _write_byte(auto_cast w, c);
+}
+
+@(private)
+_write_byte :: proc(w: Byte_Writer, c: byte) -> Error {
+	if w.stream_vtable == nil {
+		return .Empty;
+	}
+	if w.impl_write_byte != nil {
+		return w->impl_write_byte(c);
+	}
+	if w.impl_write == nil {
+		return .Empty;
+	}
+
+	b := [1]byte{c};
+	_, err := w->impl_write(b[:]);
+	return err;
+}
+
+read_rune :: proc(br: Rune_Reader) -> (ch: rune, size: int, err: Error) {
+	if br.stream_vtable == nil {
+		return 0, 0, .Empty;
+	}
+	if br.impl_read_rune != nil {
+		return br->impl_read_rune();
+	}
+	if br.impl_read == nil {
+		return 0, 0, .Empty;
+	}
+
+	b: [utf8.UTF_MAX]byte;
+	_, err = br->impl_read(b[:1]);
+
+	s0 := b[0];
+	ch = rune(s0);
+	size = 1;
+	if err != nil {
+		return;
+	}
+	if ch < utf8.RUNE_SELF {
+		return;
+	}
+	x := utf8.accept_sizes[s0];
+	if x >= 0xf0 {
+		mask := rune(x) << 31 >> 31;
+		ch = ch &~ mask | utf8.RUNE_ERROR&mask;
+		return;
+	}
+	sz := int(x&7);
+	n: int;
+	n, err = br->impl_read(b[1:sz]);
+	if err != nil || n+1 < sz {
+		ch = utf8.RUNE_ERROR;
+		return;
+	}
+
+	ch, size = utf8.decode_rune(b[:sz]);
+	return;
+}
+
+unread_byte :: proc(s: Byte_Scanner) -> Error {
+	if s.stream_vtable != nil && s.impl_unread_byte != nil {
+		return s->impl_unread_byte();
+	}
+	return .Empty;
+}
+unread_rune :: proc(s: Rune_Scanner) -> Error {
+	if s.stream_vtable != nil && s.impl_unread_rune != nil {
+		return s->impl_unread_rune();
+	}
+	return .Empty;
+}
+
+
+write_string :: proc(s: Writer, str: string) -> (n: int, err: Error) {
+	return write(s, transmute([]byte)str);
+}
+
+write_rune :: proc(s: Writer, r: rune) -> (size: int, err: Error) {
+	if s.stream_vtable != nil && s.impl_write_rune != nil {
+		return s->impl_write_rune(r);
+	}
+
+	if r < utf8.RUNE_SELF {
+		err = write_byte(s, byte(r));
+		if err == nil {
+			size = 1;
+		}
+		return;
+	}
+	buf, w := utf8.encode_rune(r);
+	return write(s, buf[:w]);
+}
+
+
+
+read_full :: proc(r: Reader, buf: []byte) -> (n: int, err: Error) {
+	return read_at_least(r, buf, len(buf));
+}
+
+
+read_at_least :: proc(r: Reader, buf: []byte, min: int) -> (n: int, err: Error) {
+	if len(buf) < min {
+		return 0, .Short_Buffer;
+	}
+	for n < min && err == nil {
+		nn: int;
+		nn, err = read(r, buf[n:]);
+		n += n;
+	}
+
+	if n >= min {
+		err = nil;
+	} else if n > 0 && err == .EOF {
+		err = .Unexpected_EOF;
+	}
+	return;
+}
+
+// copy copies from src to dst till either EOF is reached on src or an error occurs
+// It returns the number of bytes copied and the first error that occurred whilst copying, if any.
+copy :: proc(dst: Writer, src: Reader) -> (written: i64, err: Error) {
+	return _copy_buffer(dst, src, nil);
+}
+
+// copy_buffer is the same as copy except that it stages through the provided buffer (if one is required)
+// rather than allocating a temporary one on the stack through `intrinsics.alloca`
+// If buf is `nil`, it is allocate through `intrinsics.alloca`; otherwise if it has zero length, it will panic
+copy_buffer :: proc(dst: Writer, src: Reader, buf: []byte) -> (written: i64, err: Error) {
+	if buf != nil && len(buf) == 0 {
+		panic("empty buffer in io.copy_buffer");
+	}
+	return _copy_buffer(dst, src, buf);
+}
+
+
+
+// copy_n copies n bytes (or till an error) from src to dst.
+// It returns the number of bytes copied and the first error that occurred whilst copying, if any.
+// On return, written == n IFF err == nil
+copy_n :: proc(dst: Writer, src: Reader, n: i64) -> (written: i64, err: Error) {
+	nsrc := limited_reader_init(&Limited_Reader{}, src, n);
+	written, err = copy(dst, nsrc);
+	if written == n {
+		return n, nil;
+	}
+	if written < n && err == nil {
+		// src stopped early and must have been an EOF
+		err = .EOF;
+	}
+	return;
+}
+
+
+@(private)
+_copy_buffer :: proc(dst: Writer, src: Reader, buf: []byte) -> (written: i64, err: Error) {
+	if dst.stream_vtable == nil || src.stream_vtable == nil {
+		return 0, .Empty;
+	}
+	if src.impl_write_to != nil {
+		return src->impl_write_to(dst);
+	}
+	if src.impl_read_from != nil {
+		return dst->impl_read_from(src);
+	}
+	buf := buf;
+	if buf == nil {
+		DEFAULT_SIZE :: 4 * 1024;
+		size := DEFAULT_SIZE;
+		if src.stream_vtable == _limited_reader_vtable {
+			l := (^Limited_Reader)(src.stream_data);
+			if i64(size) > l.n {
+				if l.n < 1 {
+					size = 1;
+				} else {
+					size = int(l.n);
+				}
+			}
+		}
+		// NOTE(bill): alloca is fine here
+		buf = transmute([]byte)runtime.Raw_Slice{intrinsics.alloca(size, 2*align_of(rawptr)), size};
+	}
+	for {
+		nr, er := read(src, buf);
+		if nr > 0 {
+			nw, ew := write(dst, buf[0:nr]);
+			if nw > 0 {
+				written += i64(nw);
+			}
+			if ew != nil {
+				err = ew;
+				break;
+			}
+			if nr != nw {
+				err = .Short_Write;
+				break;
+			}
+		}
+		if er != nil {
+			if er != .EOF {
+				err = er;
+			}
+			break;
+		}
+	}
+	return;
+}

core/io/multi.odin

@@ -0,0 +1,95 @@
+package io
+
+Multi_Reader :: struct {
+	readers: [dynamic]Reader,
+}
+
+@(private)
+_multi_reader_vtable := &Stream_VTable{
+	impl_read = proc(s: Stream, p: []byte) -> (n: int, err: Error) {
+		mr := (^Multi_Reader)(s.stream_data);
+		for len(mr.readers) > 0 {
+			r := mr.readers[0];
+			n, err = read(r, p);
+			if err == .EOF {
+				ordered_remove(&mr.readers, 0);
+			}
+			if n > 0 || err != .EOF {
+				if err == .EOF && len(mr.readers) > 0 {
+					// Don't return EOF yet, more readers remain
+					err = nil;
+				}
+				return;
+			}
+		}
+		return 0, .EOF;
+	},
+};
+
+multi_reader_init :: proc(mr: ^Multi_Reader, readers: ..Reader, allocator := context.allocator) -> (r: Reader) {
+	all_readers := make([dynamic]Reader, 0, len(readers), allocator);
+
+	for w in readers {
+		if w.stream_vtable == _multi_reader_vtable {
+			other := (^Multi_Reader)(w.stream_data);
+			append(&all_readers, ..other.readers[:]);
+		} else {
+			append(&all_readers, w);
+		}
+	}
+
+	mr.readers = all_readers;
+
+	r.stream_vtable = _multi_reader_vtable;
+	r.stream_data = mr;
+	return;
+}
+
+multi_reader_destroy :: proc(mr: ^Multi_Reader) {
+	delete(mr.readers);
+}
+
+
+Multi_Writer :: struct {
+	writers: [dynamic]Writer,
+}
+
+@(private)
+_multi_writer_vtable := &Stream_VTable{
+	impl_write = proc(s: Stream, p: []byte) -> (n: int, err: Error) {
+		mw := (^Multi_Writer)(s.stream_data);
+		for w in mw.writers {
+			n, err = write(w, p);
+			if err != nil {
+				return;
+			}
+			if n != len(p) {
+				err = .Short_Write;
+				return;
+			}
+		}
+
+		return len(p), nil;
+	},
+};
+
+multi_writer_init :: proc(mw: ^Multi_Writer, writers: ..Writer, allocator := context.allocator) -> (out: Writer) {
+	mw.writers = make([dynamic]Writer, 0, len(writers), allocator);
+
+	for w in writers {
+		if w.stream_vtable == _multi_writer_vtable {
+			other := (^Multi_Writer)(w.stream_data);
+			append(&mw.writers, ..other.writers[:]);
+		} else {
+			append(&mw.writers, w);
+		}
+	}
+
+	out.stream_vtable = _multi_writer_vtable;
+	out.stream_data = mw;
+	return;
+}
+
+multi_writer_destroy :: proc(mw: ^Multi_Writer) {
+	delete(mw.writers);
+}

core/io/util.odin

@@ -0,0 +1,176 @@
+package io
+
+import "core:strconv"
+
+write_u64 :: proc(w: Writer, i: u64, base: int = 10) -> (n: int, err: Error) {
+	buf: [32]byte;
+	s := strconv.append_bits(buf[:], i, base, false, 64, strconv.digits, nil);
+	return write_string(w, s);
+}
+write_i64 :: proc(w: Writer, i: i64, base: int = 10) -> (n: int, err: Error) {
+	buf: [32]byte;
+	s := strconv.append_bits(buf[:], u64(i), base, true, 64, strconv.digits, nil);
+	return write_string(w, s);
+}
+
+write_uint :: proc(w: Writer, i: uint, base: int = 10) -> (n: int, err: Error) {
+	return write_u64(w, u64(i), base);
+}
+write_int :: proc(w: Writer, i: int, base: int = 10) -> (n: int, err: Error) {
+	return write_i64(w, i64(i), base);
+}
+
+Tee_Reader :: struct {
+	r: Reader,
+	w: Writer,
+}
+
+@(private)
+_tee_reader_vtable := &Stream_VTable{
+	impl_read = proc(s: Stream, p: []byte) -> (n: int, err: Error) {
+		t := (^Tee_Reader)(s.stream_data);
+		n, err = read(t.r, p);
+		if n > 0 {
+			if wn, werr := write(t.w, p[:n]); werr != nil {
+				return wn, werr;
+			}
+		}
+		return;
+	},
+};
+
+// tee_reader_init returns a Reader that writes to 'w' what it reads from 'r'
+// All reads from 'r' performed through it are matched with a corresponding write to 'w'
+// There is no internal buffering done
+// The write must complete before th read completes
+// Any error encountered whilst writing is reported as a 'read' error
+// tee_reader_init must call io.destroy when done with
+tee_reader_init :: proc(t: ^Tee_Reader, r: Reader, w: Writer, allocator := context.allocator) -> Reader {
+	t.r, t.w = r, w;
+	return tee_reader_to_reader(t);
+}
+
+tee_reader_to_reader :: proc(t: ^Tee_Reader) -> (r: Reader) {
+	r.stream_data = t;
+	r.stream_vtable = _tee_reader_vtable;
+	return;
+}
+
+
+// A Limited_Reader reads from r but limits the amount of data returned to just n bytes.
+// Each call to read updates n to reflect the new amount remaining.
+// read returns EOF when n <= 0 or when the underlying r returns EOF.
+Limited_Reader :: struct {
+	r: Reader, // underlying reader
+	n: i64,    // max_bytes
+}
+
+@(private)
+_limited_reader_vtable := &Stream_VTable{
+	impl_read = proc(s: Stream, p: []byte) -> (n: int, err: Error) {
+		l := (^Limited_Reader)(s.stream_data);
+		if l.n <= 0 {
+			return 0, .EOF;
+		}
+		p := p;
+		if i64(len(p)) > l.n {
+			p = p[0:l.n];
+		}
+		n, err = read(l.r, p);
+		l.n -= i64(n);
+		return;
+	},
+};
+
+limited_reader_init :: proc(l: ^Limited_Reader, r: Reader, n: i64) -> Reader {
+	l.r = r;
+	l.n = n;
+	return limited_reader_to_reader(l);
+}
+
+limited_reader_to_reader :: proc(l: ^Limited_Reader) -> (r: Reader) {
+	r.stream_vtable = _limited_reader_vtable;
+	r.stream_data = l;
+	return;
+}
+
+// Section_Reader implements read, seek, and read_at on a section of an underlying Reader_At
+Section_Reader :: struct {
+	r: Reader_At,
+	base:  i64,
+	off:   i64,
+	limit: i64,
+}
+
+section_reader_init :: proc(s: ^Section_Reader, r: Reader_At, off: i64, n: i64) {
+	s.r = r;
+	s.off = off;
+	s.limit = off + n;
+	return;
+}
+section_reader_to_stream :: proc(s: ^Section_Reader) -> (out: Stream) {
+	out.stream_data = s;
+	out.stream_vtable = _section_reader_vtable;
+	return;
+}
+
+@(private)
+_section_reader_vtable := &Stream_VTable{
+	impl_read = proc(stream: Stream, p: []byte) -> (n: int, err: Error) {
+		s := (^Section_Reader)(stream.stream_data);
+		if s.off >= s.limit {
+			return 0, .EOF;
+		}
+		p := p;
+		if max := s.limit - s.off; i64(len(p)) > max {
+			p = p[0:max];
+		}
+		n, err = read_at(s.r, p, s.off);
+		s.off += i64(n);
+		return;
+	},
+	impl_read_at = proc(stream: Stream, p: []byte, off: i64) -> (n: int, err: Error) {
+		s := (^Section_Reader)(stream.stream_data);
+		p, off := p, off;
+
+		if off < 0 || off >= s.limit - s.base {
+			return 0, .EOF;
+		}
+		off += s.base;
+		if max := s.limit - off; i64(len(p)) > max {
+			p = p[0:max];
+			n, err = read_at(s.r, p, off);
+			if err == nil {
+				err = .EOF;
+			}
+			return;
+		}
+		return read_at(s.r, p, off);
+	},
+	impl_seek = proc(stream: Stream, offset: i64, whence: Seek_From) -> (n: i64, err: Error) {
+		s := (^Section_Reader)(stream.stream_data);
+
+		offset := offset;
+		switch whence {
+		case:
+			return 0, .Invalid_Whence;
+		case .Start:
+			offset += s.base;
+		case .Current:
+			offset += s.off;
+		case .End:
+			offset += s.limit;
+		}
+		if offset < s.base {
+			return 0, .Invalid_Offset;
+		}
+		s.off = offset;
+		n = offset - s.base;
+		return;
+	},
+	impl_size = proc(stream: Stream) -> i64 {
+		s := (^Section_Reader)(stream.stream_data);
+		return s.limit - s.base;
+	},
+};
+

core/log/file_console_logger.odin

@@ -0,0 +1,162 @@
+package log
+
+import "core:fmt";
+import "core:strings";
+import "core:os";
+import "core:time";
+
+Level_Headers := [?]string{
+	 0..<10 = "[DEBUG] --- ",
+	10..<20 = "[INFO ] --- ",
+	20..<30 = "[WARN ] --- ",
+	30..<40 = "[ERROR] --- ",
+	40..<50 = "[FATAL] --- ",
+};
+
+Default_Console_Logger_Opts :: Options{
+	.Level,
+	.Terminal_Color,
+	.Short_File_Path,
+	.Line,
+	.Procedure,
+} | Full_Timestamp_Opts;
+
+Default_File_Logger_Opts :: Options{
+	.Level,
+	.Short_File_Path,
+	.Line,
+	.Procedure,
+} | Full_Timestamp_Opts;
+
+
+File_Console_Logger_Data :: struct {
+	file_handle:  os.Handle,
+	ident: string,
+}
+
+create_file_logger :: proc(h: os.Handle, lowest := Level.Debug, opt := Default_File_Logger_Opts, ident := "") -> Logger {
+	data := new(File_Console_Logger_Data);
+	data.file_handle = h;
+	data.ident = ident;
+	return Logger{file_console_logger_proc, data, lowest, opt};
+}
+
+destroy_file_logger :: proc(log: ^Logger) {
+	data := cast(^File_Console_Logger_Data)log.data;
+	if data.file_handle != os.INVALID_HANDLE {
+		os.close(data.file_handle);
+	}
+	free(data);
+}
+
+create_console_logger :: proc(lowest := Level.Debug, opt := Default_Console_Logger_Opts, ident := "") -> Logger {
+	data := new(File_Console_Logger_Data);
+	data.file_handle = os.INVALID_HANDLE;
+	data.ident = ident;
+	return Logger{file_console_logger_proc, data, lowest, opt};
+}
+
+destroy_console_logger :: proc(log: ^Logger) {
+	free(log.data);
+}
+
+file_console_logger_proc :: proc(logger_data: rawptr, level: Level, text: string, options: Options, location := #caller_location) {
+	data := cast(^File_Console_Logger_Data)logger_data;
+	h: os.Handle = os.stdout if level <= Level.Error else os.stderr;
+	if data.file_handle != os.INVALID_HANDLE {
+		h = data.file_handle;
+	}
+	backing: [1024]byte; //NOTE(Hoej): 1024 might be too much for a header backing, unless somebody has really long paths.
+	buf := strings.builder_from_slice(backing[:]);
+
+	do_level_header(options, level, &buf);
+
+	when time.IS_SUPPORTED {
+		if Full_Timestamp_Opts & options != nil {
+			fmt.sbprint(&buf, "[");
+			t := time.now();
+			y, m, d := time.date(t);
+			h, min, s := time.clock(t);
+			if .Date in options { fmt.sbprintf(&buf, "%d-%02d-%02d ", y, m, d);    }
+			if .Time in options { fmt.sbprintf(&buf, "%02d:%02d:%02d", h, min, s); }
+			fmt.sbprint(&buf, "] ");
+		}
+	}
+
+	do_location_header(options, &buf, location);
+
+	if .Thread_Id in options {
+		// NOTE(Oskar): not using context.thread_id here since that could be
+		// incorrect when replacing context for a thread.
+		fmt.sbprintf(&buf, "[{}] ", os.current_thread_id());
+	}
+
+	if data.ident != "" {
+		fmt.sbprintf(&buf, "[%s] ", data.ident);
+	}
+	//TODO(Hoej): When we have better atomics and such, make this thread-safe
+	fmt.fprintf(h, "%s %s\n", strings.to_string(buf), text);
+}
+
+do_level_header :: proc(opts: Options, level: Level, str: ^strings.Builder) {
+
+	RESET     :: "\x1b[0m";
+	RED       :: "\x1b[31m";
+	YELLOW    :: "\x1b[33m";
+	DARK_GREY :: "\x1b[90m";
+
+	col := RESET;
+	switch level {
+	case .Debug:   col = DARK_GREY;
+	case .Info:    col = RESET;
+	case .Warning: col = YELLOW;
+	case .Error, .Fatal: col = RED;
+	}
+
+	if .Level in opts {
+		if .Terminal_Color in opts {
+			fmt.sbprint(str, col);
+		}
+		fmt.sbprint(str, Level_Headers[level]);
+		if .Terminal_Color in opts {
+			fmt.sbprint(str, RESET);
+		}
+	}
+}
+
+do_location_header :: proc(opts: Options, buf: ^strings.Builder, location := #caller_location) {
+	if Location_Header_Opts & opts == nil {
+		return;
+	}
+	fmt.sbprint(buf, "[");
+
+	file := location.file_path;
+	if .Short_File_Path in opts {
+		last := 0;
+		for r, i in location.file_path {
+			if r == '/' {
+				last = i+1;
+			}
+		}
+		file = location.file_path[last:];
+	}
+
+	if Location_File_Opts & opts != nil {
+		fmt.sbprint(buf, file);
+	}
+	if .Line in opts {
+		if Location_File_Opts & opts != nil {
+			fmt.sbprint(buf, ":");
+		}
+		fmt.sbprint(buf, location.line);
+	}
+
+	if .Procedure in opts {
+		if (Location_File_Opts | {.Line}) & opts != nil {
+			fmt.sbprint(buf, ":");
+		}
+		fmt.sbprintf(buf, "%s()", location.procedure);
+	}
+
+	fmt.sbprint(buf, "] ");
+}

core/log/log.odin

@@ -0,0 +1,145 @@
+package log
+
+import "core:runtime"
+import "core:fmt"
+
+
+// NOTE(bill, 2019-12-31): These are defined in `package runtime` as they are used in the `context`. This is to prevent an import definition cycle.
+
+Level :: runtime.Logger_Level;
+/*
+Logger_Level :: enum {
+	Debug   = 0,
+	Info    = 10,
+	Warning = 20,
+	Error   = 30,
+	Fatal   = 40,
+}
+*/
+
+Option :: runtime.Logger_Option;
+/*
+Option :: enum {
+	Level,
+	Date,
+	Time,
+	Short_File_Path,
+	Long_File_Path,
+	Line,
+	Procedure,
+	Terminal_Color
+}
+*/
+
+Options :: runtime.Logger_Options;
+/*
+Options :: bit_set[Option];
+*/
+
+Full_Timestamp_Opts :: Options{
+	.Date,
+	.Time,
+};
+Location_Header_Opts :: Options{
+	.Short_File_Path,
+	.Long_File_Path,
+	.Line,
+	.Procedure,
+};
+Location_File_Opts :: Options{
+	.Short_File_Path,
+	.Long_File_Path,
+};
+
+
+Logger_Proc :: runtime.Logger_Proc;
+/*
+Logger_Proc :: #type proc(data: rawptr, level: Level, text: string, options: Options, location := #caller_location);
+*/
+
+Logger :: runtime.Logger;
+/*
+Logger :: struct {
+	procedure:    Logger_Proc,
+	data:      	  rawptr,
+	lowest_level: Level,
+	options:   	  Logger_Options,
+}
+*/
+
+nil_logger_proc :: proc(data: rawptr, level: Level, text: string, options: Options, location := #caller_location) {
+	// Do nothing
+}
+
+nil_logger :: proc() -> Logger {
+	return Logger{nil_logger_proc, nil, Level.Debug, nil};
+}
+
+// TODO(bill): Should these be redesigned so that they are do not rely upon `package fmt`?
+debugf :: proc(fmt_str: string, args: ..any, location := #caller_location) {
+	logf(level=.Debug,   fmt_str=fmt_str, args=args, location=location);
+}
+infof  :: proc(fmt_str: string, args: ..any, location := #caller_location) {
+	logf(level=.Info,    fmt_str=fmt_str, args=args, location=location);
+}
+warnf  :: proc(fmt_str: string, args: ..any, location := #caller_location) {
+	logf(level=.Warning, fmt_str=fmt_str, args=args, location=location);
+}
+errorf :: proc(fmt_str: string, args: ..any, location := #caller_location) {
+	logf(level=.Error,   fmt_str=fmt_str, args=args, location=location);
+}
+fatalf :: proc(fmt_str: string, args: ..any, location := #caller_location) {
+	logf(level=.Fatal,   fmt_str=fmt_str, args=args, location=location);
+}
+
+debug :: proc(args: ..any, sep := " ", location := #caller_location) {
+	log(level=.Debug,   args=args, sep=sep, location=location);
+}
+info  :: proc(args: ..any, sep := " ", location := #caller_location) {
+	log(level=.Info,    args=args, sep=sep, location=location);
+}
+warn  :: proc(args: ..any, sep := " ", location := #caller_location) {
+	log(level=.Warning, args=args, sep=sep, location=location);
+}
+error :: proc(args: ..any, sep := " ", location := #caller_location) {
+	log(level=.Error,   args=args, sep=sep, location=location);
+}
+fatal :: proc(args: ..any, sep := " ", location := #caller_location) {
+	log(level=.Fatal,   args=args, sep=sep, location=location);
+}
+
+panic :: proc(args: ..any, location := #caller_location) -> ! {
+	log(level=.Fatal, args=args, location=location);
+	runtime.panic("log.panic", location);
+}
+panicf :: proc(fmt_str: string, args: ..any, location := #caller_location) -> ! {
+	logf(level=.Fatal, fmt_str=fmt_str, args=args, location=location);
+	runtime.panic("log.panicf", location);
+}
+
+
+
+
+log :: proc(level: Level, args: ..any, sep := " ", location := #caller_location) {
+	logger := context.logger;
+	if logger.procedure == nil {
+		return;
+	}
+	if level < logger.lowest_level {
+		return;
+	}
+	str := fmt.tprint(args=args, sep=sep); //NOTE(Hoej): While tprint isn't thread-safe, no logging is.
+	logger.procedure(logger.data, level, str, logger.options, location);
+}
+
+logf :: proc(level: Level, fmt_str: string, args: ..any, location := #caller_location) {
+	logger := context.logger;
+	if logger.procedure == nil {
+		return;
+	}
+	if level < logger.lowest_level {
+		return;
+	}
+	str := fmt.tprintf(fmt_str, ..args);
+	logger.procedure(logger.data, level, str, logger.options, location);
+}

core/log/multi_logger.odin

@@ -0,0 +1,29 @@
+package log
+
+
+Multi_Logger_Data :: struct {
+	loggers: []Logger,
+}
+
+create_multi_logger :: proc(logs: ..Logger) -> Logger {
+	data := new(Multi_Logger_Data);
+	data.loggers = make([]Logger, len(logs));
+	copy(data.loggers, logs);
+	return Logger{multi_logger_proc, data, Level.Debug, nil};
+}
+
+destroy_multi_logger :: proc(log : ^Logger) {
+	free(log.data);
+	log^ = nil_logger();
+}
+
+multi_logger_proc :: proc(logger_data: rawptr, level: Level, text: string,
+                          options: Options, location := #caller_location) {
+	data := cast(^Multi_Logger_Data)logger_data;
+	for log in data.loggers {
+		if level < log.lowest_level {
+			return;
+		}
+		log.procedure(log.data, level, text, log.options, location);
+	}
+}

core/math.odin

@@ -1,374 +0,0 @@
-TAU          :: 6.28318530717958647692528676655900576;
-PI           :: 3.14159265358979323846264338327950288;
-ONE_OVER_TAU :: 0.636619772367581343075535053490057448;
-ONE_OVER_PI  :: 0.159154943091895335768883763372514362;
-
-E            :: 2.71828182845904523536;
-SQRT_TWO     :: 1.41421356237309504880168872420969808;
-SQRT_THREE   :: 1.73205080756887729352744634150587236;
-SQRT_FIVE    :: 2.23606797749978969640917366873127623;
-
-LOG_TWO      :: 0.693147180559945309417232121458176568;
-LOG_TEN      :: 2.30258509299404568401799145468436421;
-
-EPSILON      :: 1.19209290e-7;
-
-τ :: TAU;
-π :: PI;
-
-Vec2 :: [2]f32;
-Vec3 :: [3]f32;
-Vec4 :: [4]f32;
-
-// Column major
-Mat2 :: [2][2]f32;
-Mat3 :: [3][3]f32;
-Mat4 :: [4][4]f32;
-
-Complex :: complex64;
-
-@(default_calling_convention="c")
-foreign __llvm_core {
-	@(link_name="llvm.sqrt.f32")
-	sqrt :: proc(x: f32) -> f32 ---;
-	@(link_name="llvm.sqrt.f64")
-	sqrt :: proc(x: f64) -> f64 ---;
-
-	@(link_name="llvm.sin.f32")
-	sin :: proc(θ: f32) -> f32 ---;
-	@(link_name="llvm.sin.f64")
-	sin :: proc(θ: f64) -> f64 ---;
-
-	@(link_name="llvm.cos.f32")
-	cos :: proc(θ: f32) -> f32 ---;
-	@(link_name="llvm.cos.f64")
-	cos :: proc(θ: f64) -> f64 ---;
-
-	@(link_name="llvm.pow.f32")
-	pow :: proc(x, power: f32) -> f32 ---;
-	@(link_name="llvm.pow.f64")
-	pow :: proc(x, power: f64) -> f64 ---;
-
-	@(link_name="llvm.fmuladd.f32")
-	fmuladd :: proc(a, b, c: f32) -> f32 ---;
-	@(link_name="llvm.fmuladd.f64")
-	fmuladd :: proc(a, b, c: f64) -> f64 ---;
-}
-
-tan :: proc "c" (θ: f32) -> f32 do return sin(θ)/cos(θ);
-tan :: proc "c" (θ: f64) -> f64 do return sin(θ)/cos(θ);
-
-lerp   :: proc(a, b: $T, t: $E) -> (x: T) do return a*(1-t) + b*t;
-
-unlerp :: proc(a, b, x: f32) -> (t: f32) do return (x-a)/(b-a);
-unlerp :: proc(a, b, x: f64) -> (t: f64) do return (x-a)/(b-a);
-
-
-sign :: proc(x: f32) -> f32 { return x >= 0 ? +1 : -1; }
-sign :: proc(x: f64) -> f64 { return x >= 0 ? +1 : -1; }
-
-
-
-copy_sign :: proc(x, y: f32) -> f32 {
-	ix := transmute(u32)x;
-	iy := transmute(u32)y;
-	ix &= 0x7fff_ffff;
-	ix |= iy & 0x8000_0000;
-	return transmute(f32)ix;
-}
-
-copy_sign :: proc(x, y: f64) -> f64 {
-	ix := transmute(u64)x;
-	iy := transmute(u64)y;
-	ix &= 0x7fff_ffff_ffff_ff;
-	ix |= iy & 0x8000_0000_0000_0000;
-	return transmute(f64)ix;
-}
-
-round :: proc(x: f32) -> f32 { return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5); }
-round :: proc(x: f64) -> f64 { return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5); }
-
-floor :: proc(x: f32) -> f32 { return x >= 0 ? f32(i64(x)) : f32(i64(x-0.5)); } // TODO: Get accurate versions
-floor :: proc(x: f64) -> f64 { return x >= 0 ? f64(i64(x)) : f64(i64(x-0.5)); } // TODO: Get accurate versions
-
-ceil :: proc(x: f32) -> f32 { return x < 0 ? f32(i64(x)) : f32(i64(x+1)); }// TODO: Get accurate versions
-ceil :: proc(x: f64) -> f64 { return x < 0 ? f64(i64(x)) : f64(i64(x+1)); }// TODO: Get accurate versions
-
-remainder :: proc(x, y: f32) -> f32 do return x - round(x/y) * y;
-remainder :: proc(x, y: f64) -> f64 do return x - round(x/y) * y;
-
-mod :: proc(x, y: f32) -> f32 {
-	result: f32;
-	y = abs(y);
-	result = remainder(abs(x), y);
-	if sign(result) < 0 {
-		result += y;
-	}
-	return copy_sign(result, x);
-}
-mod :: proc(x, y: f64) -> f64 {
-	result: f64;
-	y = abs(y);
-	result = remainder(abs(x), y);
-	if sign(result) < 0 {
-		result += y;
-	}
-	return copy_sign(result, x);
-}
-
-
-to_radians :: proc(degrees: f32) -> f32 do return degrees * TAU / 360;
-to_degrees :: proc(radians: f32) -> f32 do return radians * 360 / TAU;
-
-
-
-dot :: proc(a, b: $T/[$N]$E) -> E {
-	res: E;
-	for i in 0..N do res += a[i] * b[i];
-	return res;
-}
-
-cross :: proc(x, y: $T/[3]$E) -> T {
-	a := swizzle(x, 1, 2, 0) * swizzle(y, 2, 0, 1);
-	b := swizzle(x, 2, 0, 1) * swizzle(y, 1, 2, 0);
-	return T(a - b);
-}
-
-
-mag :: proc(v: $T/[$N]$E) -> E do return sqrt(dot(v, v));
-
-norm :: proc(v: $T/[$N]$E) -> T do return v / mag(v);
-
-norm0 :: proc(v: $T/[$N]$E) -> T {
-	m := mag(v);
-	return m == 0 ? 0 : v/m;
-}
-
-
-
-mat4_identity :: proc() -> Mat4 {
-	return Mat4{
-		{1, 0, 0, 0},
-		{0, 1, 0, 0},
-		{0, 0, 1, 0},
-		{0, 0, 0, 1},
-	};
-}
-
-mat4_transpose :: proc(m: Mat4) -> Mat4 {
-	for j in 0..4 {
-		for i in 0..4 {
-			m[i][j], m[j][i] = m[j][i], m[i][j];
-		}
-	}
-	return m;
-}
-
-mul :: proc(a, b: Mat4) -> Mat4 {
-	c: Mat4;
-	for j in 0..4 {
-		for i in 0..4 {
-			c[j][i] = a[0][i]*b[j][0] +
-			          a[1][i]*b[j][1] +
-			          a[2][i]*b[j][2] +
-			          a[3][i]*b[j][3];
-		}
-	}
-	return c;
-}
-
-mul :: proc(m: Mat4, v: Vec4) -> Vec4 {
-	return Vec4{
-		m[0][0]*v[0] + m[1][0]*v[1] + m[2][0]*v[2] + m[3][0]*v[3],
-		m[0][1]*v[0] + m[1][1]*v[1] + m[2][1]*v[2] + m[3][1]*v[3],
-		m[0][2]*v[0] + m[1][2]*v[1] + m[2][2]*v[2] + m[3][2]*v[3],
-		m[0][3]*v[0] + m[1][3]*v[1] + m[2][3]*v[2] + m[3][3]*v[3],
-	};
-}
-
-inverse :: proc(m: Mat4) -> Mat4 {
-	o: Mat4;
-
-	sf00 := m[2][2] * m[3][3] - m[3][2] * m[2][3];
-	sf01 := m[2][1] * m[3][3] - m[3][1] * m[2][3];
-	sf02 := m[2][1] * m[3][2] - m[3][1] * m[2][2];
-	sf03 := m[2][0] * m[3][3] - m[3][0] * m[2][3];
-	sf04 := m[2][0] * m[3][2] - m[3][0] * m[2][2];
-	sf05 := m[2][0] * m[3][1] - m[3][0] * m[2][1];
-	sf06 := m[1][2] * m[3][3] - m[3][2] * m[1][3];
-	sf07 := m[1][1] * m[3][3] - m[3][1] * m[1][3];
-	sf08 := m[1][1] * m[3][2] - m[3][1] * m[1][2];
-	sf09 := m[1][0] * m[3][3] - m[3][0] * m[1][3];
-	sf10 := m[1][0] * m[3][2] - m[3][0] * m[1][2];
-	sf11 := m[1][1] * m[3][3] - m[3][1] * m[1][3];
-	sf12 := m[1][0] * m[3][1] - m[3][0] * m[1][1];
-	sf13 := m[1][2] * m[2][3] - m[2][2] * m[1][3];
-	sf14 := m[1][1] * m[2][3] - m[2][1] * m[1][3];
-	sf15 := m[1][1] * m[2][2] - m[2][1] * m[1][2];
-	sf16 := m[1][0] * m[2][3] - m[2][0] * m[1][3];
-	sf17 := m[1][0] * m[2][2] - m[2][0] * m[1][2];
-	sf18 := m[1][0] * m[2][1] - m[2][0] * m[1][1];
-
-
-	o[0][0] = +(m[1][1] * sf00 - m[1][2] * sf01 + m[1][3] * sf02);
-	o[0][1] = -(m[1][0] * sf00 - m[1][2] * sf03 + m[1][3] * sf04);
-	o[0][2] = +(m[1][0] * sf01 - m[1][1] * sf03 + m[1][3] * sf05);
-	o[0][3] = -(m[1][0] * sf02 - m[1][1] * sf04 + m[1][2] * sf05);
-
-	o[1][0] = -(m[0][1] * sf00 - m[0][2] * sf01 + m[0][3] * sf02);
-	o[1][1] = +(m[0][0] * sf00 - m[0][2] * sf03 + m[0][3] * sf04);
-	o[1][2] = -(m[0][0] * sf01 - m[0][1] * sf03 + m[0][3] * sf05);
-	o[1][3] = +(m[0][0] * sf02 - m[0][1] * sf04 + m[0][2] * sf05);
-
-	o[2][0] = +(m[0][1] * sf06 - m[0][2] * sf07 + m[0][3] * sf08);
-	o[2][1] = -(m[0][0] * sf06 - m[0][2] * sf09 + m[0][3] * sf10);
-	o[2][2] = +(m[0][0] * sf11 - m[0][1] * sf09 + m[0][3] * sf12);
-	o[2][3] = -(m[0][0] * sf08 - m[0][1] * sf10 + m[0][2] * sf12);
-
-	o[3][0] = -(m[0][1] * sf13 - m[0][2] * sf14 + m[0][3] * sf15);
-	o[3][1] = +(m[0][0] * sf13 - m[0][2] * sf16 + m[0][3] * sf17);
-	o[3][2] = -(m[0][0] * sf14 - m[0][1] * sf16 + m[0][3] * sf18);
-	o[3][3] = +(m[0][0] * sf15 - m[0][1] * sf17 + m[0][2] * sf18);
-
-	ood := 1.0 / (m[0][0] * o[0][0] +
-	              m[0][1] * o[0][1] +
-	              m[0][2] * o[0][2] +
-	              m[0][3] * o[0][3]);
-
-	o[0][0] *= ood;
-	o[0][1] *= ood;
-	o[0][2] *= ood;
-	o[0][3] *= ood;
-	o[1][0] *= ood;
-	o[1][1] *= ood;
-	o[1][2] *= ood;
-	o[1][3] *= ood;
-	o[2][0] *= ood;
-	o[2][1] *= ood;
-	o[2][2] *= ood;
-	o[2][3] *= ood;
-	o[3][0] *= ood;
-	o[3][1] *= ood;
-	o[3][2] *= ood;
-	o[3][3] *= ood;
-
-	return o;
-}
-
-
-mat4_translate :: proc(v: Vec3) -> Mat4 {
-	m := mat4_identity();
-	m[3][0] = v[0];
-	m[3][1] = v[1];
-	m[3][2] = v[2];
-	m[3][3] = 1;
-	return m;
-}
-
-mat4_rotate :: proc(v: Vec3, angle_radians: f32) -> Mat4 {
-	c := cos(angle_radians);
-	s := sin(angle_radians);
-
-	a := norm(v);
-	t := a * (1-c);
-
-	rot := mat4_identity();
-
-	rot[0][0] = c + t[0]*a[0];
-	rot[0][1] = 0 + t[0]*a[1] + s*a[2];
-	rot[0][2] = 0 + t[0]*a[2] - s*a[1];
-	rot[0][3] = 0;
-
-	rot[1][0] = 0 + t[1]*a[0] - s*a[2];
-	rot[1][1] = c + t[1]*a[1];
-	rot[1][2] = 0 + t[1]*a[2] + s*a[0];
-	rot[1][3] = 0;
-
-	rot[2][0] = 0 + t[2]*a[0] + s*a[1];
-	rot[2][1] = 0 + t[2]*a[1] - s*a[0];
-	rot[2][2] = c + t[2]*a[2];
-	rot[2][3] = 0;
-
-	return rot;
-}
-
-scale :: proc(m: Mat4, v: Vec3) -> Mat4 {
-	m[0][0] *= v[0];
-	m[1][1] *= v[1];
-	m[2][2] *= v[2];
-	return m;
-}
-
-scale :: proc(m: Mat4, s: f32) -> Mat4 {
-	m[0][0] *= s;
-	m[1][1] *= s;
-	m[2][2] *= s;
-	return m;
-}
-
-
-look_at :: proc(eye, centre, up: Vec3) -> Mat4 {
-	f := norm(centre - eye);
-	s := norm(cross(f, up));
-	u := cross(s, f);
-
-	return Mat4{
-		{+s[0], +u[0], -f[0], 0},
-		{+s[1], +u[1], -f[1], 0},
-		{+s[2], +u[2], -f[2], 0},
-		{-dot(s, eye), -dot(u, eye), dot(f, eye), 1},
-	};
-}
-
-perspective :: proc(fovy, aspect, near, far: f32) -> Mat4 {
-	m: Mat4;
-	tan_half_fovy := tan(0.5 * fovy);
-
-	m[0][0] = 1.0 / (aspect*tan_half_fovy);
-	m[1][1] = 1.0 / (tan_half_fovy);
-	m[2][2] = -(far + near) / (far - near);
-	m[2][3] = -1.0;
-	m[3][2] = -2.0*far*near / (far - near);
-	return m;
-}
-
-
-ortho3d :: proc(left, right, bottom, top, near, far: f32) -> Mat4 {
-	m := mat4_identity();
-	m[0][0] = +2.0 / (right - left);
-	m[1][1] = +2.0 / (top - bottom);
-	m[2][2] = -2.0 / (far - near);
-	m[3][0] = -(right + left)   / (right - left);
-	m[3][1] = -(top   + bottom) / (top   - bottom);
-	m[3][2] = -(far + near) / (far - near);
-	return m;
-}
-
-
-
-
-F32_DIG        :: 6;
-F32_EPSILON    :: 1.192092896e-07;
-F32_GUARD      :: 0;
-F32_MANT_DIG   :: 24;
-F32_MAX        :: 3.402823466e+38;
-F32_MAX_10_EXP :: 38;
-F32_MAX_EXP    :: 128;
-F32_MIN        :: 1.175494351e-38;
-F32_MIN_10_EXP :: -37;
-F32_MIN_EXP    :: -125;
-F32_NORMALIZE  :: 0;
-F32_RADIX      :: 2;
-F32_ROUNDS     :: 1;
-
-F64_DIG        :: 15;                       // # of decimal digits of precision
-F64_EPSILON    :: 2.2204460492503131e-016;  // smallest such that 1.0+F64_EPSILON != 1.0
-F64_MANT_DIG   :: 53;                       // # of bits in mantissa
-F64_MAX        :: 1.7976931348623158e+308;  // max value
-F64_MAX_10_EXP :: 308;                      // max decimal exponent
-F64_MAX_EXP    :: 1024;                     // max binary exponent
-F64_MIN        :: 2.2250738585072014e-308;  // min positive value
-F64_MIN_10_EXP :: -307;                     // min decimal exponent
-F64_MIN_EXP    :: -1021;                    // min binary exponent
-F64_RADIX      :: 2;                        // exponent radix
-F64_ROUNDS     :: 1;                        // addition rounding: near

core/math/bits/bits.odin

@@ -0,0 +1,455 @@
+package math_bits
+
+import "intrinsics"
+
+U8_MIN  :: 0;
+U16_MIN :: 0;
+U32_MIN :: 0;
+U64_MIN :: 0;
+
+U8_MAX  :: 1 <<  8 - 1;
+U16_MAX :: 1 << 16 - 1;
+U32_MAX :: 1 << 32 - 1;
+U64_MAX :: 1 << 64 - 1;
+
+I8_MIN  :: - 1 << 7;
+I16_MIN :: - 1 << 15;
+I32_MIN :: - 1 << 31;
+I64_MIN :: - 1 << 63;
+
+I8_MAX  :: 1 <<  7 - 1;
+I16_MAX :: 1 << 15 - 1;
+I32_MAX :: 1 << 31 - 1;
+I64_MAX :: 1 << 63 - 1;
+
+
+count_ones           :: intrinsics.count_ones;
+count_zeros          :: intrinsics.count_zeros;
+trailing_zeros       :: intrinsics.count_trailing_zeros;
+leading_zeros        :: intrinsics.count_leading_zeros;
+count_trailing_zeros :: intrinsics.count_trailing_zeros;
+count_leading_zeros  :: intrinsics.count_leading_zeros;
+reverse_bits         :: intrinsics.reverse_bits;
+byte_swap            :: intrinsics.byte_swap;
+
+overflowing_add :: intrinsics.overflow_add;
+overflowing_sub :: intrinsics.overflow_sub;
+overflowing_mul :: intrinsics.overflow_mul;
+
+
+rotate_left8 :: proc(x: u8,  k: int) -> u8 {
+	n :: 8;
+	s := uint(k) & (n-1);
+	return x <<s | x>>(n-s);
+}
+rotate_left16 :: proc(x: u16, k: int) -> u16 {
+	n :: 16;
+	s := uint(k) & (n-1);
+	return x <<s | x>>(n-s);
+}
+rotate_left32 :: proc(x: u32, k: int) -> u32 {
+	n :: 32;
+	s := uint(k) & (n-1);
+	return x <<s | x>>(n-s);
+}
+rotate_left64 :: proc(x: u64, k: int) -> u64 {
+	n :: 64;
+	s := uint(k) & (n-1);
+	return x <<s | x>>(n-s);
+}
+
+rotate_left :: proc(x: uint, k: int) -> uint {
+	n :: 8*size_of(uint);
+	s := uint(k) & (n-1);
+	return x <<s | x>>(n-s);
+}
+
+from_be_u8   :: proc(i:   u8) ->   u8 { return i; }
+from_be_u16  :: proc(i:  u16) ->  u16 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
+from_be_u32  :: proc(i:  u32) ->  u32 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
+from_be_u64  :: proc(i:  u64) ->  u64 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
+from_be_uint :: proc(i: uint) -> uint { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
+
+from_le_u8   :: proc(i:   u8) ->   u8 { return i; }
+from_le_u16  :: proc(i:  u16) ->  u16 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
+from_le_u32  :: proc(i:  u32) ->  u32 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
+from_le_u64  :: proc(i:  u64) ->  u64 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
+from_le_uint :: proc(i: uint) -> uint { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
+
+to_be_u8   :: proc(i:   u8) ->   u8 { return i; }
+to_be_u16  :: proc(i:  u16) ->  u16 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
+to_be_u32  :: proc(i:  u32) ->  u32 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
+to_be_u64  :: proc(i:  u64) ->  u64 { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
+to_be_uint :: proc(i: uint) -> uint { when ODIN_ENDIAN == "big" { return i; } else { return byte_swap(i); } }
+
+
+to_le_u8   :: proc(i:   u8) ->   u8 { return i; }
+to_le_u16  :: proc(i:  u16) ->  u16 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
+to_le_u32  :: proc(i:  u32) ->  u32 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
+to_le_u64  :: proc(i:  u64) ->  u64 { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
+to_le_uint :: proc(i: uint) -> uint { when ODIN_ENDIAN == "little" { return i; } else { return byte_swap(i); } }
+
+
+
+len_u8 :: proc(x: u8) -> int {
+	return int(len_u8_table[x]);
+}
+len_u16 :: proc(x: u16) -> (n: int) {
+	x := x;
+	if x >= 1<<8 {
+		x >>= 8;
+		n = 8;
+	}
+	return n + int(len_u8_table[x]);
+}
+len_u32 :: proc(x: u32) -> (n: int) {
+	x := x;
+	if x >= 1<<16 {
+		x >>= 16;
+		n = 16;
+	}
+	if x >= 1<<8 {
+		x >>= 8;
+		n += 8;
+	}
+	return n + int(len_u8_table[x]);
+}
+len_u64 :: proc(x: u64) -> (n: int) {
+	x := x;
+	if x >= 1<<32 {
+		x >>= 32;
+		n = 32;
+	}
+	if x >= 1<<16 {
+		x >>= 16;
+		n += 16;
+	}
+	if x >= 1<<8 {
+		x >>= 8;
+		n += 8;
+	}
+	return n + int(len_u8_table[x]);
+}
+len_uint :: proc(x: uint) -> (n: int) {
+	when size_of(uint) == size_of(u64) {
+		return len_u64(u64(x));
+	} else {
+		return len_u32(u32(x));
+	}
+}
+
+// returns the minimum number of bits required to represent x
+len :: proc{len_u8, len_u16, len_u32, len_u64, len_uint};
+
+
+add_u32 :: proc(x, y, carry: u32) -> (sum, carry_out: u32) {
+	yc := y + carry;
+	sum = x + yc;
+	if sum < x || yc < y {
+		carry_out = 1;
+	}
+	return;
+}
+add_u64 :: proc(x, y, carry: u64) -> (sum, carry_out: u64) {
+	yc := y + carry;
+	sum = x + yc;
+	if sum < x || yc < y {
+		carry_out = 1;
+	}
+	return;
+}
+add_uint :: proc(x, y, carry: uint) -> (sum, carry_out: uint) {
+	yc := y + carry;
+	sum = x + yc;
+	if sum < x || yc < y {
+		carry_out = 1;
+	}
+	return;
+}
+add :: proc{add_u32, add_u64, add_uint};
+
+
+sub_u32 :: proc(x, y, borrow: u32) -> (diff, borrow_out: u32) {
+	yb := y + borrow;
+	diff = x - yb;
+	if diff > x || yb < y {
+		borrow_out = 1;
+	}
+	return;
+}
+sub_u64 :: proc(x, y, borrow: u64) -> (diff, borrow_out: u64) {
+	yb := y + borrow;
+	diff = x - yb;
+	if diff > x || yb < y {
+		borrow_out = 1;
+	}
+	return;
+}
+sub_uint :: proc(x, y, borrow: uint) -> (diff, borrow_out: uint) {
+	yb := y + borrow;
+	diff = x - yb;
+	if diff > x || yb < y {
+		borrow_out = 1;
+	}
+	return;
+}
+sub :: proc{sub_u32, sub_u64, sub_uint};
+
+
+mul_u32 :: proc(x, y: u32) -> (hi, lo: u32) {
+	z := u64(x) * u64(y);
+	hi, lo = u32(z>>32), u32(z);
+	return;
+}
+mul_u64 :: proc(x, y: u64) -> (hi, lo: u64) {
+	mask :: 1<<32 - 1;
+
+	x0, x1 := x & mask, x >> 32;
+	y0, y1 := y & mask, y >> 32;
+
+	w0 := x0 * y0;
+	t := x1*y0 + w0>>32;
+
+	w1, w2 := t & mask, t >> 32;
+	w1 += x0 * y1;
+	hi = x1*y1 + w2 + w1>>32;
+	lo = x * y;
+	return;
+}
+
+mul_uint :: proc(x, y: uint) -> (hi, lo: uint) {
+	when size_of(uint) == size_of(u32) {
+		a, b := mul_u32(u32(x), u32(y));
+	} else {
+		#assert(size_of(uint) == size_of(u64));
+		a, b := mul_u64(u64(x), u64(y));
+	}
+	return uint(a), uint(b);
+}
+
+mul :: proc{mul_u32, mul_u64, mul_uint};
+
+
+div_u32 :: proc(hi, lo, y: u32) -> (quo, rem: u32) {
+	assert(y != 0 && y <= hi);
+	z := u64(hi)<<32 | u64(lo);
+	quo, rem = u32(z/u64(y)), u32(z%u64(y));
+	return;
+}
+div_u64 :: proc(hi, lo, y: u64) -> (quo, rem: u64) {
+	y := y;
+	two32  :: 1 << 32;
+	mask32 :: two32 - 1;
+	if y == 0 {
+		panic("divide error");
+	}
+	if y <= hi {
+		panic("overflow error");
+	}
+
+	s := uint(count_leading_zeros(y));
+	y <<= s;
+
+	yn1 := y >> 32;
+	yn0 := y & mask32;
+	un32 := hi<<s | lo>>(64-s);
+	un10 := lo << s;
+	un1 := un10 >> 32;
+	un0 := un10 & mask32;
+	q1 := un32 / yn1;
+	rhat := un32 - q1*yn1;
+
+	for q1 >= two32 || q1*yn0 > two32*rhat+un1 {
+		q1 -= 1;
+		rhat += yn1;
+		if rhat >= two32 {
+			break;
+		}
+	}
+
+	un21 := un32*two32 + un1 - q1*y;
+	q0 := un21 / yn1;
+	rhat = un21 - q0*yn1;
+
+	for q0 >= two32 || q0*yn0 > two32*rhat+un0 {
+		q0 -= 1;
+		rhat += yn1;
+		if rhat >= two32 {
+			break;
+		}
+	}
+
+	return q1*two32 + q0, (un21*two32 + un0 - q0*y) >> s;
+}
+div_uint :: proc(hi, lo, y: uint) -> (quo, rem: uint) {
+	when size_of(uint) == size_of(u32) {
+		a, b := div_u32(u32(hi), u32(lo), u32(y));
+	} else {
+		#assert(size_of(uint) == size_of(u64));
+		a, b := div_u64(u64(hi), u64(lo), u64(y));
+	}
+	return uint(a), uint(b);
+}
+div :: proc{div_u32, div_u64, div_uint};
+
+
+
+is_power_of_two_u8   :: proc(i:   u8) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_i8   :: proc(i:   i8) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_u16  :: proc(i:  u16) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_i16  :: proc(i:  i16) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_u32  :: proc(i:  u32) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_i32  :: proc(i:  i32) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_u64  :: proc(i:  u64) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_i64  :: proc(i:  i64) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_uint :: proc(i: uint) -> bool { return i > 0 && (i & (i-1)) == 0; }
+is_power_of_two_int  :: proc(i:  int) -> bool { return i > 0 && (i & (i-1)) == 0; }
+
+is_power_of_two :: proc{
+	is_power_of_two_u8,   is_power_of_two_i8,
+	is_power_of_two_u16,  is_power_of_two_i16,
+	is_power_of_two_u32,  is_power_of_two_i32,
+	is_power_of_two_u64,  is_power_of_two_i64,
+	is_power_of_two_uint, is_power_of_two_int,
+};
+
+
+@private
+len_u8_table := [256]u8{
+	0         = 0,
+	1         = 1,
+	2..<4     = 2,
+	4..<8     = 3,
+	8..<16    = 4,
+	16..<32   = 5,
+	32..<64   = 6,
+	64..<128  = 7,
+	128..<256 = 8,
+};
+
+
+bitfield_extract_u8   :: proc(value:   u8, offset, bits: uint) ->   u8 { return (value >> offset) &   u8(1<<bits - 1); }
+bitfield_extract_u16  :: proc(value:  u16, offset, bits: uint) ->  u16 { return (value >> offset) &  u16(1<<bits - 1); }
+bitfield_extract_u32  :: proc(value:  u32, offset, bits: uint) ->  u32 { return (value >> offset) &  u32(1<<bits - 1); }
+bitfield_extract_u64  :: proc(value:  u64, offset, bits: uint) ->  u64 { return (value >> offset) &  u64(1<<bits - 1); }
+bitfield_extract_u128 :: proc(value: u128, offset, bits: uint) -> u128 { return (value >> offset) & u128(1<<bits - 1); }
+bitfield_extract_uint :: proc(value: uint, offset, bits: uint) -> uint { return (value >> offset) & uint(1<<bits - 1); }
+
+bitfield_extract_i8 :: proc(value: i8, offset, bits: uint) -> i8 {
+	v := (u8(value) >> offset) & u8(1<<bits - 1);
+	m := u8(1<<(bits-1));
+	r := (v~m) - m;
+	return i8(r);
+}
+bitfield_extract_i16 :: proc(value: i16, offset, bits: uint) -> i16 {
+	v := (u16(value) >> offset) & u16(1<<bits - 1);
+	m := u16(1<<(bits-1));
+	r := (v~m) - m;
+	return i16(r);
+}
+bitfield_extract_i32 :: proc(value: i32, offset, bits: uint) -> i32 {
+	v := (u32(value) >> offset) & u32(1<<bits - 1);
+	m := u32(1<<(bits-1));
+	r := (v~m) - m;
+	return i32(r);
+}
+bitfield_extract_i64 :: proc(value: i64, offset, bits: uint) -> i64 {
+	v := (u64(value) >> offset) & u64(1<<bits - 1);
+	m := u64(1<<(bits-1));
+	r := (v~m) - m;
+	return i64(r);
+}
+bitfield_extract_i128 :: proc(value: i128, offset, bits: uint) -> i128 {
+	v := (u128(value) >> offset) & u128(1<<bits - 1);
+	m := u128(1<<(bits-1));
+	r := (v~m) - m;
+	return i128(r);
+}
+bitfield_extract_int :: proc(value: int, offset, bits: uint) -> int {
+	v := (uint(value) >> offset) & uint(1<<bits - 1);
+	m := uint(1<<(bits-1));
+	r := (v~m) - m;
+	return int(r);
+}
+
+
+bitfield_extract :: proc{
+	bitfield_extract_u8,
+	bitfield_extract_u16,
+	bitfield_extract_u32,
+	bitfield_extract_u64,
+	bitfield_extract_u128,
+	bitfield_extract_uint,
+	bitfield_extract_i8,
+	bitfield_extract_i16,
+	bitfield_extract_i32,
+	bitfield_extract_i64,
+	bitfield_extract_i128,
+	bitfield_extract_int,
+};
+
+
+bitfield_insert_u8 :: proc(base, insert: u8, offset, bits: uint) -> u8 {
+	mask := u8(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_u16 :: proc(base, insert: u16, offset, bits: uint) -> u16 {
+	mask := u16(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_u32 :: proc(base, insert: u32, offset, bits: uint) -> u32 {
+	mask := u32(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_u64 :: proc(base, insert: u64, offset, bits: uint) -> u64 {
+	mask := u64(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_u128 :: proc(base, insert: u128, offset, bits: uint) -> u128 {
+	mask := u128(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_uint :: proc(base, insert: uint, offset, bits: uint) -> uint {
+	mask := uint(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+
+bitfield_insert_i8 :: proc(base, insert: i8, offset, bits: uint) -> i8 {
+	mask := i8(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_i16 :: proc(base, insert: i16, offset, bits: uint) -> i16 {
+	mask := i16(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_i32 :: proc(base, insert: i32, offset, bits: uint) -> i32 {
+	mask := i32(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_i64 :: proc(base, insert: i64, offset, bits: uint) -> i64 {
+	mask := i64(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_i128 :: proc(base, insert: i128, offset, bits: uint) -> i128 {
+	mask := i128(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+bitfield_insert_int :: proc(base, insert: int, offset, bits: uint) -> int {
+	mask := int(1<<bits - 1);
+	return (base &~ (mask<<offset)) | ((insert&mask) << offset);
+}
+
+bitfield_insert :: proc{
+	bitfield_insert_u8,
+	bitfield_insert_u16,
+	bitfield_insert_u32,
+	bitfield_insert_u64,
+	bitfield_insert_u128,
+	bitfield_insert_uint,
+	bitfield_insert_i8,
+	bitfield_insert_i16,
+	bitfield_insert_i32,
+	bitfield_insert_i64,
+	bitfield_insert_i128,
+	bitfield_insert_int,
+};

core/math/fixed/fixed.odin

@@ -0,0 +1,133 @@
+package math_fixed
+
+import "core:math"
+import "core:strconv"
+
+import "intrinsics"
+_ :: intrinsics;
+
+Fixed :: struct($Backing: typeid, $Fraction_Width: uint)
+	where
+		intrinsics.type_is_integer(Backing),
+		0 <= Fraction_Width,
+		Fraction_Width <= 8*size_of(Backing) {
+	i: Backing,
+}
+
+Fixed4_4  :: distinct Fixed(i8, 4);
+Fixed5_3  :: distinct Fixed(i8, 3);
+Fixed6_2  :: distinct Fixed(i8, 2);
+Fixed7_1  :: distinct Fixed(i8, 1);
+
+Fixed8_8  :: distinct Fixed(i16, 8);
+Fixed13_3 :: distinct Fixed(i16, 3);
+
+Fixed16_16 :: distinct Fixed(i32, 16);
+Fixed26_6  :: distinct Fixed(i32,  6);
+
+Fixed32_32 :: distinct Fixed(i64, 32);
+Fixed52_12 :: distinct Fixed(i64, 12);
+
+
+init_from_f64 :: proc(x: ^$T/Fixed($Backing, $Fraction_Width), val: f64) {
+	i, f := math.modf(val);
+	x.i  = Backing(f * (1<<Fraction_Width));
+	x.i &= 1<<Fraction_Width - 1;
+	x.i |= Backing(i) << Fraction_Width;
+}
+
+
+init_from_parts :: proc(x: ^$T/Fixed($Backing, $Fraction_Width), integer, fraction: Backing) {
+	i, f := math.modf(val);
+	x.i  = fraction;
+	x.i &= 1<<Fraction_Width - 1;
+	x.i |= integer;
+}
+
+to_f64 :: proc(x: $T/Fixed($Backing, $Fraction_Width)) -> f64 {
+	res := f64(x.i >> Fraction_Width);
+	res += f64(x.i & (1<<Fraction_Width-1)) / f64(1<<Fraction_Width);
+	return res;
+}
+
+
+add :: proc(x, y: $T/Fixed) -> T {
+	return {x.i + y.i};
+}
+sub :: proc(x, y: $T/Fixed) -> T {
+	return {x.i - y.i};
+}
+
+mul :: proc(x, y: $T/Fixed($Backing, $Fraction_Width)) -> (z: T) {
+	z.i = intrinsics.fixed_point_mul(x.i, y.i, Fraction_Width);
+	return;
+}
+mul_sat :: proc(x, y: $T/Fixed($Backing, $Fraction_Width)) -> (z: T) {
+	z.i = intrinsics.fixed_point_mul_sat(x.i, y.i, Fraction_Width);
+	return;
+}
+
+div :: proc(x, y: $T/Fixed($Backing, $Fraction_Width)) -> (z: T) {
+	z.i = intrinsics.fixed_point_div(x.i, y.i, Fraction_Width);
+	return;
+}
+div_sat :: proc(x, y: $T/Fixed($Backing, $Fraction_Width)) -> (z: T) {
+	z.i = intrinsics.fixed_point_div_sat(x.i, y.i, Fraction_Width);
+	return;
+}
+
+
+floor :: proc(x: $T/Fixed($Backing, $Fraction_Width)) -> Backing {
+	return x.i >> Fraction_Width;
+}
+ceil :: proc(x: $T/Fixed($Backing, $Fraction_Width)) -> Backing {
+	Integer :: 8*size_of(Backing) - Fraction_Width;
+	return (x.i + (1 << Integer-1)) >> Fraction_Width;
+}
+round :: proc(x: $T/Fixed($Backing, $Fraction_Width)) -> Backing {
+	Integer :: 8*size_of(Backing) - Fraction_Width;
+	return (x.i + (1 << (Integer - 1))) >> Fraction_Width;
+}
+
+
+
+append :: proc(dst: []byte, x: $T/Fixed($Backing, $Fraction_Width)) -> string {
+	x := x;
+	buf: [48]byte;
+	i := 0;
+	if x.i < 0 {
+		buf[i] = '-';
+		i += 1;
+		x.i = -x.i;
+	}
+
+	integer := x.i >> Fraction_Width;
+	fraction := x.i & (1<<Fraction_Width - 1);
+
+	s := strconv.append_uint(buf[i:], u64(integer), 10);
+	i += len(s);
+	if fraction != 0 {
+		buf[i] = '.';
+		i += 1;
+		for fraction > 0 {
+			fraction *= 10;
+			buf[i] = byte('0' + (fraction>>Fraction_Width));
+			i += 1;
+			fraction &= 1<<Fraction_Width - 1;
+		}
+	}
+
+
+
+	n := copy(dst, buf[:i]);
+	return string(dst[:i]);
+}
+
+
+to_string :: proc(x: $T/Fixed($Backing, $Fraction_Width), allocator := context.allocator) -> string {
+	buf: [48]byte;
+	s := append(buf[:], x);
+	str := make([]byte, len(s), allocator);
+	copy(str, s);
+	return string(str);
+}

core/math/linalg/extended.odin

@@ -0,0 +1,553 @@
+package linalg
+
+import "builtin"
+import "core:math"
+
+radians :: proc(degrees: $T) -> (out: T) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = degrees * RAD_PER_DEG;
+		}
+	} else {
+		out = degrees * RAD_PER_DEG;
+	}
+	return;
+}
+degrees :: proc(radians: $T) -> (out: T) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = radians * DEG_PER_RAD;
+		}
+	} else {
+		out = radians * DEG_PER_RAD;
+	}
+	return;
+}
+
+min_double :: proc(a, b: $T) -> (out: T) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = builtin.min(a[i], b[i]);
+		}
+	} else {
+		out = builtin.min(a, b);
+	}
+	return;
+}
+
+min_single :: proc(a: $T) -> (out: ELEM_TYPE(T)) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		N :: len(T);
+
+		when N == 1 {
+			out = a[0];
+		} else when N == 2 {
+			out = builtin.min(a[0], a[1]);
+		} else {
+			out = builtin.min(a[0], a[1]);
+			for i in 2..<N {
+				out = builtin.min(out, a[i]);
+			}
+		}
+	} else {
+		out = a;
+	}
+	return;
+}
+
+min_triple :: proc(a, b, c: $T) -> T where IS_NUMERIC(ELEM_TYPE(T)) {
+	return min_double(a, min_double(b, c));
+}
+
+min :: proc{min_single, min_double, min_triple};
+
+max_double :: proc(a, b: $T) -> (out: T) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = builtin.max(a[i], b[i]);
+		}
+	} else {
+		out = builtin.max(a, b);
+	}
+	return;
+}
+
+max_single :: proc(a: $T) -> (out: ELEM_TYPE(T)) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		N :: len(T);
+
+		when N == 1 {
+			out = a[0];
+		} else when N == 2 {
+			out = builtin.max(a[0], a[1]);
+		} else when N == 3 {
+			out = builtin.max(a[0], a[1], a[3]);
+		}else {
+			out = builtin.max(a[0], a[1]);
+			for i in 2..<N {
+				out = builtin.max(out, a[i]);
+			}
+		}
+	} else {
+		out = a;
+	}
+	return;
+}
+
+max_triple :: proc(a, b, c: $T) -> T where IS_NUMERIC(ELEM_TYPE(T)) {
+	return max_double(a, max_double(b, c));
+}
+
+max :: proc{max_single, max_double, max_triple};
+
+abs :: proc(a: $T) -> (out: T) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = builtin.abs(a[i]);
+		}
+	} else {
+		out = builtin.abs(a);
+	}
+	return;
+}
+
+sign :: proc(a: $T) -> (out: T) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = #force_inline math.sign(a[i]);
+		}
+	} else {
+		out = #force_inline math.sign(a);
+	}
+	return;
+}
+
+clamp :: proc(x, a, b: $T) -> (out: T) where IS_NUMERIC(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = builtin.clamp(x[i], a[i], b[i]);
+		}
+	} else {
+		out = builtin.clamp(x, a, b);
+	}
+	return;
+}
+
+
+saturate :: proc(x: $T) -> T where IS_FLOAT(ELEM_TYPE(T)) {
+	return clamp(x, 0.0, 1.0);
+}
+
+lerp :: proc(a, b, t: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = a[i]*(1-t[i]) + b[i]*t[i];
+		}
+	} else {
+		out = a * (1.0 - t) + b * t;
+	}
+	return;
+}
+mix :: proc(a, b, t: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = a[i]*(1-t[i]) + b[i]*t[i];
+		}
+	} else {
+		out = a * (1.0 - t) + b * t;
+	}
+	return;
+}
+
+unlerp :: proc(a, b, x: $T) -> T where IS_FLOAT(ELEM_TYPE(T)) {
+	return (x - a) / (b - a);
+}
+
+step :: proc(e, x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = x[i] < e[i] ? 0.0 : 1.0;
+		}
+	} else {
+		out = x < e ? 0.0 : 1.0;
+	}
+	return;
+}
+
+smoothstep :: proc(e0, e1, x: $T) -> T where IS_FLOAT(ELEM_TYPE(T)) {
+	t := saturate(unlerp(e0, e1, x));
+	return t * t * (3.0 - 2.0 * t);
+}
+
+smootherstep :: proc(e0, e1, x: $T) -> T where IS_FLOAT(ELEM_TYPE(T)) {
+	t := saturate(unlerp(e0, e1, x));
+	return t * t * t * (t * (6*t - 15) + 10);
+}
+
+
+sqrt :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.sqrt(x[i]);
+		}
+	} else {
+		out = math.sqrt(x);
+	}
+	return;
+}
+
+inverse_sqrt :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = 1.0/math.sqrt(x[i]);
+		}
+	} else {
+		out = 1.0/math.sqrt(x);
+	}
+	return;
+}
+
+cos :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.cos(x[i]);
+		}
+	} else {
+		out = math.cos(x);
+	}
+	return;
+}
+
+sin :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.sin(x[i]);
+		}
+	} else {
+		out = math.sin(x);
+	}
+	return;
+}
+
+tan :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.tan(x[i]);
+		}
+	} else {
+		out = math.tan(x);
+	}
+	return;
+}
+
+acos :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.acos(x[i]);
+		}
+	} else {
+		out = math.acos(x);
+	}
+	return;
+}
+
+asin :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.asin(x[i]);
+		}
+	} else {
+		out = math.asin(x);
+	}
+	return;
+}
+
+atan :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.atan(x[i]);
+		}
+	} else {
+		out = math.atan(x);
+	}
+	return;
+}
+atan2 :: proc(y, x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.atan2(y[i], x[i]);
+		}
+	} else {
+		out = math.atan2(y, x);
+	}
+	return;
+}
+
+
+ln :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.ln(x[i]);
+		}
+	} else {
+		out = math.ln(x);
+	}
+	return;
+}
+
+log2 :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = INVLN2 * math.ln(x[i]);
+		}
+	} else {
+		out = INVLN2 * math.ln(x);
+	}
+	return;
+}
+
+log10 :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = INVLN10 * math.ln(x[i]);
+		}
+	} else {
+		out = INVLN10 * math.ln(x);
+	}
+	return;
+}
+
+log :: proc(x, b: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.ln(x[i]) / math.ln(cast(ELEM_TYPE(T))b[i]);
+		}
+	} else {
+		out = INVLN10 * math.ln(x) / math.ln(cast(ELEM_TYPE(T))b);
+	}
+	return;
+}
+
+exp :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.exp(x[i]);
+		}
+	} else {
+		out = math.exp(x);
+	}
+	return;
+}
+
+exp2 :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.exp(LN2 * x[i]);
+		}
+	} else {
+		out = math.exp(LN2 * x);
+	}
+	return;
+}
+
+exp10 :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.exp(LN10 * x[i]);
+		}
+	} else {
+		out = math.exp(LN10 * x);
+	}
+	return;
+}
+
+pow :: proc(x, e: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = math.pow(x[i], e[i]);
+		}
+	} else {
+		out = math.pow(x, e);
+	}
+	return;
+}
+
+
+ceil :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = #force_inline math.ceil(x[i]);
+		}
+	} else {
+		out = #force_inline math.ceil(x);
+	}
+	return;
+}
+
+floor :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = #force_inline math.floor(x[i]);
+		}
+	} else {
+		out = #force_inline math.floor(x);
+	}
+	return;
+}
+
+round :: proc(x: $T) -> (out: T) where IS_FLOAT(ELEM_TYPE(T)) {
+	when IS_ARRAY(T) {
+		for i in 0..<len(T) {
+			out[i] = #force_inline math.round(x[i]);
+		}
+	} else {
+		out = #force_inline math.round(x);
+	}
+	return;
+}
+
+fract :: proc(x: $T) -> T where IS_FLOAT(ELEM_TYPE(T)) {
+	f := #force_inline floor(x);
+	return x - f;
+}
+
+mod :: proc(x, m: $T) -> T where IS_FLOAT(ELEM_TYPE(T)) {
+	f := #force_inline floor(x / m);
+	return x - f * m;
+}
+
+
+face_forward :: proc(N, I, N_ref: $T) -> (out: T) where IS_ARRAY(T), IS_FLOAT(ELEM_TYPE(T)) {
+	return dot(N_ref, I) < 0 ? N : -N;
+}
+
+distance :: proc(p0, p1: $V/[$N]$E) -> E where IS_NUMERIC(E) {
+	return length(p1 - p0);
+}
+
+reflect :: proc(I, N: $T) -> (out: T) where IS_ARRAY(T), IS_FLOAT(ELEM_TYPE(T)) {
+	b := n * (2 * dot(n, i));
+	return i - b;
+}
+refract :: proc(I, N: $T) -> (out: T) where IS_ARRAY(T), IS_FLOAT(ELEM_TYPE(T)) {
+	dv := dot(n, i);
+	k := 1 - eta*eta - (1 - dv*dv);
+	a := i * eta;
+	b := n * eta*dv*math.sqrt(k);
+	return (a - b) * E(int(k >= 0));
+}
+
+
+
+
+is_nan_single :: proc(x: $T) -> bool where IS_FLOAT(T) {
+	return #force_inline math.is_nan(x);
+}
+
+is_nan_array :: proc(x: $A/[$N]$T) -> (out: [N]bool) where IS_FLOAT(T) {
+	for i in 0..<N {
+		out[i] = #force_inline is_nan(x[i]);
+	}
+	return;
+}
+
+is_inf_single :: proc(x: $T) -> bool where IS_FLOAT(T) {
+	return #force_inline math.is_inf(x);
+}
+
+is_inf_array :: proc(x: $A/[$N]$T) -> (out: [N]bool) where IS_FLOAT(T) {
+	for i in 0..<N {
+		out[i] = #force_inline is_inf(x[i]);
+	}
+	return;
+}
+
+classify_single :: proc(x: $T) -> math.Float_Class where IS_FLOAT(T) {
+	return #force_inline math.classify(x);
+}
+
+classify_array :: proc(x: $A/[$N]$T) -> (out: [N]math.Float_Class) where IS_FLOAT(T) {
+	for i in 0..<N {
+		out[i] = #force_inline classify_single(x[i]);
+	}
+	return;
+}
+
+is_nan :: proc{is_nan_single, is_nan_array};
+is_inf :: proc{is_inf_single, is_inf_array};
+classify :: proc{classify_single, classify_array};
+
+
+less_than_single          :: proc(x, y: $T) -> (out: bool) where !IS_ARRAY(T), IS_FLOAT(T) { return x < y; }
+less_than_equal_single    :: proc(x, y: $T) -> (out: bool) where !IS_ARRAY(T), IS_FLOAT(T) { return x <= y; }
+greater_than_single       :: proc(x, y: $T) -> (out: bool) where !IS_ARRAY(T), IS_FLOAT(T) { return x > y; }
+greater_than_equal_single :: proc(x, y: $T) -> (out: bool) where !IS_ARRAY(T), IS_FLOAT(T) { return x >= y; }
+equal_single              :: proc(x, y: $T) -> (out: bool) where !IS_ARRAY(T), IS_FLOAT(T) { return x == y; }
+not_equal_single          :: proc(x, y: $T) -> (out: bool) where !IS_ARRAY(T), IS_FLOAT(T) { return x != y; }
+
+less_than_array :: proc(x, y: $A/[$N]$T) -> (out: [N]bool) where IS_ARRAY(A), IS_FLOAT(ELEM_TYPE(A)) {
+	for i in 0..<N {
+		out[i] = x[i] < y[i];
+	}
+	return;
+}
+less_than_equal_array :: proc(x, y: $A/[$N]$T) -> (out: [N]bool) where IS_ARRAY(A), IS_FLOAT(ELEM_TYPE(A)) {
+	for i in 0..<N {
+		out[i] = x[i] <= y[i];
+	}
+	return;
+}
+greater_than_array :: proc(x, y: $A/[$N]$T) -> (out: [N]bool) where IS_ARRAY(A), IS_FLOAT(ELEM_TYPE(A)) {
+	for i in 0..<N {
+		out[i] = x[i] > y[i];
+	}
+	return;
+}
+greater_than_equal_array :: proc(x, y: $A/[$N]$T) -> (out: [N]bool) where IS_ARRAY(A), IS_FLOAT(ELEM_TYPE(A)) {
+	for i in 0..<N {
+		out[i] = x[i] >= y[i];
+	}
+	return;
+}
+equal_array :: proc(x, y: $A/[$N]$T) -> (out: [N]bool) where IS_ARRAY(A), IS_FLOAT(ELEM_TYPE(A)) {
+	for i in 0..<N {
+		out[i] = x[i] == y[i];
+	}
+	return;
+}
+not_equal_array :: proc(x, y: $A/[$N]$T) -> (out: [N]bool) where IS_ARRAY(A), IS_FLOAT(ELEM_TYPE(A)) {
+	for i in 0..<N {
+		out[i] = x[i] != y[i];
+	}
+	return;
+}
+
+less_than          :: proc{less_than_single, less_than_array};
+less_than_equal    :: proc{less_than_equal_single, less_than_equal_array};
+greater_than       :: proc{greater_than_single, greater_than_array};
+greater_than_equal :: proc{greater_than_equal_single, greater_than_equal_array};
+equal              :: proc{equal_single, equal_array};
+not_equal          :: proc{not_equal_single, not_equal_array};
+
+any :: proc(x: $A/[$N]bool) -> (out: bool) {
+	for e in x {
+		if x {
+			return true;
+		}
+	}
+	return false;
+}
+all :: proc(x: $A/[$N]bool) -> (out: bool) {
+	for e in x {
+		if !e {
+			return false;
+		}
+	}
+	return true;
+}
+not :: proc(x: $A/[$N]bool) -> (out: A) {
+	for e, i in x {
+		out[i] = !e;
+	}
+	return;
+}

core/math/linalg/general.odin

@@ -0,0 +1,367 @@
+package linalg
+
+import "core:math"
+import "intrinsics"
+
+// Generic
+
+TAU          :: 6.28318530717958647692528676655900576;
+PI           :: 3.14159265358979323846264338327950288;
+
+E            :: 2.71828182845904523536;
+
+τ :: TAU;
+π :: PI;
+e :: E;
+
+SQRT_TWO     :: 1.41421356237309504880168872420969808;
+SQRT_THREE   :: 1.73205080756887729352744634150587236;
+SQRT_FIVE    :: 2.23606797749978969640917366873127623;
+
+LN2          :: 0.693147180559945309417232121458176568;
+LN10         :: 2.30258509299404568401799145468436421;
+
+MAX_F64_PRECISION :: 16; // Maximum number of meaningful digits after the decimal point for 'f64'
+MAX_F32_PRECISION ::  8; // Maximum number of meaningful digits after the decimal point for 'f32'
+
+RAD_PER_DEG :: TAU/360.0;
+DEG_PER_RAD :: 360.0/TAU;
+
+
+
+@private IS_NUMERIC :: intrinsics.type_is_numeric;
+@private IS_QUATERNION :: intrinsics.type_is_quaternion;
+@private IS_ARRAY :: intrinsics.type_is_array;
+@private IS_FLOAT :: intrinsics.type_is_float;
+@private BASE_TYPE :: intrinsics.type_base_type;
+@private ELEM_TYPE :: intrinsics.type_elem_type;
+
+
+scalar_dot :: proc(a, b: $T) -> T where IS_FLOAT(T), !IS_ARRAY(T) {
+	return a * b;
+}
+
+vector_dot :: proc(a, b: $T/[$N]$E) -> (c: E) where IS_NUMERIC(E) {
+	for i in 0..<N {
+		c += a[i] * b[i];
+	}
+	return;
+}
+quaternion64_dot :: proc(a, b: $T/quaternion64) -> (c: f16) {
+	return a.w*a.w + a.x*b.x + a.y*b.y + a.z*b.z;
+}
+quaternion128_dot :: proc(a, b: $T/quaternion128) -> (c: f32) {
+	return a.w*a.w + a.x*b.x + a.y*b.y + a.z*b.z;
+}
+quaternion256_dot :: proc(a, b: $T/quaternion256) -> (c: f64) {
+	return a.w*a.w + a.x*b.x + a.y*b.y + a.z*b.z;
+}
+
+dot :: proc{scalar_dot, vector_dot, quaternion64_dot, quaternion128_dot, quaternion256_dot};
+
+inner_product :: dot;
+outer_product :: proc(a: $A/[$M]$E, b: $B/[$N]E) -> (out: [M][N]E) where IS_NUMERIC(E) {
+	for i in 0..<M {
+		for j in 0..<N {
+			out[i][j] = a[i]*b[j];
+		}
+	}
+	return;
+}
+
+quaternion_inverse :: proc(q: $Q) -> Q where IS_QUATERNION(Q) {
+	return conj(q) * quaternion(1.0/dot(q, q), 0, 0, 0);
+}
+
+
+scalar_cross :: proc(a, b: $T) -> T where IS_FLOAT(T), !IS_ARRAY(T) {
+	return a * b;
+}
+
+vector_cross2 :: proc(a, b: $T/[2]$E) -> E where IS_NUMERIC(E) {
+	return a[0]*b[1] - b[0]*a[1];
+}
+
+vector_cross3 :: proc(a, b: $T/[3]$E) -> (c: T) where IS_NUMERIC(E) {
+	c[0] = a[1]*b[2] - b[1]*a[2];
+	c[1] = a[2]*b[0] - b[2]*a[0];
+	c[2] = a[0]*b[1] - b[0]*a[1];
+	return;
+}
+
+quaternion_cross :: proc(q1, q2: $Q) -> (q3: Q) where IS_QUATERNION(Q) {
+	q3.x = q1.w * q2.x + q1.x * q2.w + q1.y * q2.z - q1.z * q2.y;
+	q3.y = q1.w * q2.y + q1.y * q2.w + q1.z * q2.x - q1.x * q2.z;
+	q3.z = q1.w * q2.z + q1.z * q2.w + q1.x * q2.y - q1.y * q2.x;
+	q3.w = q1.w * q2.w - q1.x * q2.x - q1.y * q2.y - q1.z * q2.z;
+	return;
+}
+
+vector_cross :: proc{scalar_cross, vector_cross2, vector_cross3};
+cross :: proc{scalar_cross, vector_cross2, vector_cross3, quaternion_cross};
+
+vector_normalize :: proc(v: $T/[$N]$E) -> T where IS_NUMERIC(E) {
+	return v / length(v);
+}
+quaternion_normalize :: proc(q: $Q) -> Q where IS_QUATERNION(Q) {
+	return q/abs(q);
+}
+normalize :: proc{vector_normalize, quaternion_normalize};
+
+vector_normalize0 :: proc(v: $T/[$N]$E) -> T where IS_NUMERIC(E) {
+	m := length(v);
+	return 0 if m == 0 else v/m;
+}
+quaternion_normalize0 :: proc(q: $Q) -> Q  where IS_QUATERNION(Q) {
+	m := abs(q);
+	return 0 if m == 0 else q/m;
+}
+normalize0 :: proc{vector_normalize0, quaternion_normalize0};
+
+
+vector_length :: proc(v: $T/[$N]$E) -> E where IS_NUMERIC(E) {
+	return math.sqrt(dot(v, v));
+}
+
+vector_length2 :: proc(v: $T/[$N]$E) -> E where IS_NUMERIC(E) {
+	return dot(v, v);
+}
+
+quaternion_length :: proc(q: $Q) -> Q where IS_QUATERNION(Q) {
+	return abs(q);
+}
+
+quaternion_length2 :: proc(q: $Q) -> Q where IS_QUATERNION(Q) {
+	return dot(q, q);
+}
+
+scalar_triple_product :: proc(a, b, c: $T/[$N]$E) -> E where IS_NUMERIC(E) {
+	// a . (b x c)
+	// b . (c x a)
+	// c . (a x b)
+	return dot(a, cross(b, c));
+}
+
+vector_triple_product :: proc(a, b, c: $T/[$N]$E) -> T where IS_NUMERIC(E) {
+	// a x (b x c)
+	// (a . c)b - (a . b)c
+	return cross(a, cross(b, c));
+}
+
+
+length :: proc{vector_length, quaternion_length};
+length2 :: proc{vector_length2, quaternion_length2};
+
+projection :: proc(x, normal: $T/[$N]$E) -> T where IS_NUMERIC(E) {
+	return dot(x, normal) / dot(normal, normal) * normal;
+}
+
+identity :: proc($T: typeid/[$N][N]$E) -> (m: T) {
+	for i in 0..<N {
+		m[i][i] = E(1);
+	}
+	return m;
+}
+
+trace :: proc(m: $T/[$N][N]$E) -> (tr: E) {
+	for i in 0..<N {
+		tr += m[i][i];
+	}
+	return;
+}
+
+transpose :: proc(a: $T/[$N][$M]$E) -> (m: (T when N == M else [M][N]E)) {
+	for j in 0..<M {
+		for i in 0..<N {
+			m[j][i] = a[i][j];
+		}
+	}
+	return;
+}
+
+matrix_mul :: proc(a, b: $M/[$N][N]$E) -> (c: M)
+	where !IS_ARRAY(E),
+		  IS_NUMERIC(E) {
+	for i in 0..<N {
+		for k in 0..<N {
+			for j in 0..<N {
+				c[k][i] += a[j][i] * b[k][j];
+			}
+		}
+	}
+	return;
+}
+
+matrix_comp_mul :: proc(a, b: $M/[$J][$I]$E) -> (c: M)
+	where !IS_ARRAY(E),
+	     IS_NUMERIC(E) {
+	for j in 0..<J {
+		for i in 0..<I {
+			c[j][i] = a[j][i] * b[j][i];
+		}
+	}
+	return;
+}
+
+matrix_mul_differ :: proc(a: $A/[$J][$I]$E, b: $B/[$K][J]E) -> (c: [K][I]E)
+	where !IS_ARRAY(E),
+		  IS_NUMERIC(E),
+		  I != K {
+	for k in 0..<K {
+		for j in 0..<J {
+			for i in 0..<I {
+				c[k][i] += a[j][i] * b[k][j];
+			}
+		}
+	}
+	return;
+}
+
+
+matrix_mul_vector :: proc(a: $A/[$I][$J]$E, b: $B/[I]E) -> (c: B)
+	where !IS_ARRAY(E),
+		  IS_NUMERIC(E) {
+	for i in 0..<I {
+		for j in 0..<J {
+			c[j] += a[i][j] * b[i];
+		}
+	}
+	return;
+}
+
+quaternion_mul_quaternion :: proc(q1, q2: $Q) -> Q where IS_QUATERNION(Q) {
+	return q1 * q2;
+}
+
+quaternion64_mul_vector3 :: proc(q: $Q/quaternion64, v: $V/[3]$F/f16) -> V {
+	Raw_Quaternion :: struct {xyz: [3]f16, r: f16};
+
+	q := transmute(Raw_Quaternion)q;
+	v := transmute([3]f16)v;
+
+	t := cross(2*q.xyz, v);
+	return V(v + q.r*t + cross(q.xyz, t));
+}
+quaternion128_mul_vector3 :: proc(q: $Q/quaternion128, v: $V/[3]$F/f32) -> V {
+	Raw_Quaternion :: struct {xyz: [3]f32, r: f32};
+
+	q := transmute(Raw_Quaternion)q;
+	v := transmute([3]f32)v;
+
+	t := cross(2*q.xyz, v);
+	return V(v + q.r*t + cross(q.xyz, t));
+}
+quaternion256_mul_vector3 :: proc(q: $Q/quaternion256, v: $V/[3]$F/f64) -> V {
+	Raw_Quaternion :: struct {xyz: [3]f64, r: f64};
+
+	q := transmute(Raw_Quaternion)q;
+	v := transmute([3]f64)v;
+
+	t := cross(2*q.xyz, v);
+	return V(v + q.r*t + cross(q.xyz, t));
+}
+quaternion_mul_vector3 :: proc{quaternion64_mul_vector3, quaternion128_mul_vector3, quaternion256_mul_vector3};
+
+mul :: proc{
+	matrix_mul,
+	matrix_mul_differ,
+	matrix_mul_vector,
+	quaternion64_mul_vector3,
+	quaternion128_mul_vector3,
+	quaternion256_mul_vector3,
+	quaternion_mul_quaternion,
+};
+
+vector_to_ptr :: proc(v: ^$V/[$N]$E) -> ^E where IS_NUMERIC(E), N > 0 #no_bounds_check {
+	return &v[0];
+}
+matrix_to_ptr :: proc(m: ^$A/[$I][$J]$E) -> ^E where IS_NUMERIC(E), I > 0, J > 0 #no_bounds_check {
+	return &m[0][0];
+}
+
+to_ptr :: proc{vector_to_ptr, matrix_to_ptr};
+
+
+
+
+
+// Splines
+
+vector_slerp :: proc(x, y: $T/[$N]$E, a: E) -> T {
+	cos_alpha := dot(x, y);
+	alpha := math.acos(cos_alpha);
+	sin_alpha := math.sin(alpha);
+
+	t1 := math.sin((1 - a) * alpha) / sin_alpha;
+	t2 := math.sin(a * alpha) / sin_alpha;
+
+	return x * t1 + y * t2;
+}
+
+catmull_rom :: proc(v1, v2, v3, v4: $T/[$N]$E, s: E) -> T {
+	s2 := s*s;
+	s3 := s2*s;
+
+	f1 := -s3 + 2 * s2 - s;
+	f2 := 3 * s3 - 5 * s2 + 2;
+	f3 := -3 * s3 + 4 * s2 + s;
+	f4 := s3 - s2;
+
+	return (f1 * v1 + f2 * v2 + f3 * v3 + f4 * v4) * 0.5;
+}
+
+hermite :: proc(v1, t1, v2, t2: $T/[$N]$E, s: E) -> T {
+	s2 := s*s;
+	s3 := s2*s;
+
+	f1 := 2 * s3 - 3 * s2 + 1;
+	f2 := -2 * s3 + 3 * s2;
+	f3 := s3 - 2 * s2 + s;
+	f4 := s3 - s2;
+
+	return f1 * v1 + f2 * v2 + f3 * t1 + f4 * t2;
+}
+
+cubic :: proc(v1, v2, v3, v4: $T/[$N]$E, s: E) -> T {
+	return ((v1 * s + v2) * s + v3) * s + v4;
+}
+
+
+
+array_cast :: proc(v: $A/[$N]$T, $Elem_Type: typeid) -> (w: [N]Elem_Type) {
+	for i in 0..<N {
+		w[i] = Elem_Type(v[i]);
+	}
+	return;
+}
+
+matrix_cast :: proc(v: $A/[$M][$N]$T, $Elem_Type: typeid) -> (w: [M][N]Elem_Type) {
+	for i in 0..<M {
+		for j in 0..<N {
+			w[i][j] = Elem_Type(v[i][j]);
+		}
+	}
+	return;
+}
+
+to_f32  :: #force_inline proc(v: $A/[$N]$T) -> [N]f32  { return array_cast(v, f32);  }
+to_f64  :: #force_inline proc(v: $A/[$N]$T) -> [N]f64  { return array_cast(v, f64);  }
+
+to_i8   :: #force_inline proc(v: $A/[$N]$T) -> [N]i8   { return array_cast(v, i8);   }
+to_i16  :: #force_inline proc(v: $A/[$N]$T) -> [N]i16  { return array_cast(v, i16);  }
+to_i32  :: #force_inline proc(v: $A/[$N]$T) -> [N]i32  { return array_cast(v, i32);  }
+to_i64  :: #force_inline proc(v: $A/[$N]$T) -> [N]i64  { return array_cast(v, i64);  }
+to_int  :: #force_inline proc(v: $A/[$N]$T) -> [N]int  { return array_cast(v, int);  }
+
+to_u8   :: #force_inline proc(v: $A/[$N]$T) -> [N]u8   { return array_cast(v, u8);   }
+to_u16  :: #force_inline proc(v: $A/[$N]$T) -> [N]u16  { return array_cast(v, u16);  }
+to_u32  :: #force_inline proc(v: $A/[$N]$T) -> [N]u32  { return array_cast(v, u32);  }
+to_u64  :: #force_inline proc(v: $A/[$N]$T) -> [N]u64  { return array_cast(v, u64);  }
+to_uint :: #force_inline proc(v: $A/[$N]$T) -> [N]uint { return array_cast(v, uint); }
+
+to_complex32     :: #force_inline proc(v: $A/[$N]$T) -> [N]complex32     { return array_cast(v, complex32);     }
+to_complex64     :: #force_inline proc(v: $A/[$N]$T) -> [N]complex64     { return array_cast(v, complex64);     }
+to_complex128    :: #force_inline proc(v: $A/[$N]$T) -> [N]complex128    { return array_cast(v, complex128);    }
+to_quaternion64  :: #force_inline proc(v: $A/[$N]$T) -> [N]quaternion64 { return array_cast(v, quaternion64); }
+to_quaternion128 :: #force_inline proc(v: $A/[$N]$T) -> [N]quaternion128 { return array_cast(v, quaternion128); }
+to_quaternion256 :: #force_inline proc(v: $A/[$N]$T) -> [N]quaternion256 { return array_cast(v, quaternion256); }

core/math/linalg/specific_euler_angles.odin

@@ -0,0 +1,127 @@
+package linalg
+
+Euler_Angle_Order :: enum {
+	// Tait-Bryan
+	XYZ,
+	XZY,
+	YXZ,
+	YZX,
+	ZXY,
+	ZYX,
+
+	// Proper Euler
+	XYX,
+	XZX,
+	YXY,
+	YZY,
+	ZXZ,
+	ZYZ,
+}
+
+
+quaternion_from_euler_angles       :: proc{quaternion_from_euler_angles_f16,       quaternion_from_euler_angles_f32,       quaternion_from_euler_angles_f64};
+quaternion_from_euler_angle_x      :: proc{quaternion_from_euler_angle_x_f16,      quaternion_from_euler_angle_x_f32,      quaternion_from_euler_angle_x_f64};
+quaternion_from_euler_angle_y      :: proc{quaternion_from_euler_angle_y_f16,      quaternion_from_euler_angle_y_f32,      quaternion_from_euler_angle_y_f64};
+quaternion_from_euler_angle_z      :: proc{quaternion_from_euler_angle_z_f16,      quaternion_from_euler_angle_z_f32,      quaternion_from_euler_angle_z_f64};
+quaternion_from_pitch_yaw_roll     :: proc{quaternion_from_pitch_yaw_roll_f16,     quaternion_from_pitch_yaw_roll_f32,     quaternion_from_pitch_yaw_roll_f64};
+
+euler_angles_from_quaternion       :: proc{euler_angles_from_quaternion_f16,       euler_angles_from_quaternion_f32,       euler_angles_from_quaternion_f64};
+euler_angles_xyz_from_quaternion   :: proc{euler_angles_xyz_from_quaternion_f16,   euler_angles_xyz_from_quaternion_f32,   euler_angles_xyz_from_quaternion_f64};
+euler_angles_yxz_from_quaternion   :: proc{euler_angles_yxz_from_quaternion_f16,   euler_angles_yxz_from_quaternion_f32,   euler_angles_yxz_from_quaternion_f64};
+euler_angles_xzx_from_quaternion   :: proc{euler_angles_xzx_from_quaternion_f16,   euler_angles_xzx_from_quaternion_f32,   euler_angles_xzx_from_quaternion_f64};
+euler_angles_xyx_from_quaternion   :: proc{euler_angles_xyx_from_quaternion_f16,   euler_angles_xyx_from_quaternion_f32,   euler_angles_xyx_from_quaternion_f64};
+euler_angles_yxy_from_quaternion   :: proc{euler_angles_yxy_from_quaternion_f16,   euler_angles_yxy_from_quaternion_f32,   euler_angles_yxy_from_quaternion_f64};
+euler_angles_yzy_from_quaternion   :: proc{euler_angles_yzy_from_quaternion_f16,   euler_angles_yzy_from_quaternion_f32,   euler_angles_yzy_from_quaternion_f64};
+euler_angles_zyz_from_quaternion   :: proc{euler_angles_zyz_from_quaternion_f16,   euler_angles_zyz_from_quaternion_f32,   euler_angles_zyz_from_quaternion_f64};
+euler_angles_zxz_from_quaternion   :: proc{euler_angles_zxz_from_quaternion_f16,   euler_angles_zxz_from_quaternion_f32,   euler_angles_zxz_from_quaternion_f64};
+euler_angles_xzy_from_quaternion   :: proc{euler_angles_xzy_from_quaternion_f16,   euler_angles_xzy_from_quaternion_f32,   euler_angles_xzy_from_quaternion_f64};
+euler_angles_yzx_from_quaternion   :: proc{euler_angles_yzx_from_quaternion_f16,   euler_angles_yzx_from_quaternion_f32,   euler_angles_yzx_from_quaternion_f64};
+euler_angles_zyx_from_quaternion   :: proc{euler_angles_zyx_from_quaternion_f16,   euler_angles_zyx_from_quaternion_f32,   euler_angles_zyx_from_quaternion_f64};
+euler_angles_zxy_from_quaternion   :: proc{euler_angles_zxy_from_quaternion_f16,   euler_angles_zxy_from_quaternion_f32,   euler_angles_zxy_from_quaternion_f64};
+
+roll_from_quaternion               :: proc{roll_from_quaternion_f16,               roll_from_quaternion_f32,               roll_from_quaternion_f64};
+pitch_from_quaternion              :: proc{pitch_from_quaternion_f16,              pitch_from_quaternion_f32,              pitch_from_quaternion_f64};
+yaw_from_quaternion                :: proc{yaw_from_quaternion_f16,                yaw_from_quaternion_f32,                yaw_from_quaternion_f64};
+pitch_yaw_roll_from_quaternion     :: proc{pitch_yaw_roll_from_quaternion_f16,     pitch_yaw_roll_from_quaternion_f32,     pitch_yaw_roll_from_quaternion_f64};
+
+matrix3_from_euler_angles          :: proc{matrix3_from_euler_angles_f16,          matrix3_from_euler_angles_f32,          matrix3_from_euler_angles_f64};
+matrix3_from_euler_angle_x         :: proc{matrix3_from_euler_angle_x_f16,         matrix3_from_euler_angle_x_f32,         matrix3_from_euler_angle_x_f64};
+matrix3_from_euler_angle_y         :: proc{matrix3_from_euler_angle_y_f16,         matrix3_from_euler_angle_y_f32,         matrix3_from_euler_angle_y_f64};
+matrix3_from_euler_angle_z         :: proc{matrix3_from_euler_angle_z_f16,         matrix3_from_euler_angle_z_f32,         matrix3_from_euler_angle_z_f64};
+matrix3_from_derived_euler_angle_x :: proc{matrix3_from_derived_euler_angle_x_f16, matrix3_from_derived_euler_angle_x_f32, matrix3_from_derived_euler_angle_x_f64};
+matrix3_from_derived_euler_angle_y :: proc{matrix3_from_derived_euler_angle_y_f16, matrix3_from_derived_euler_angle_y_f32, matrix3_from_derived_euler_angle_y_f64};
+matrix3_from_derived_euler_angle_z :: proc{matrix3_from_derived_euler_angle_z_f16, matrix3_from_derived_euler_angle_z_f32, matrix3_from_derived_euler_angle_z_f64};
+matrix3_from_euler_angles_xy       :: proc{matrix3_from_euler_angles_xy_f16,       matrix3_from_euler_angles_xy_f32,       matrix3_from_euler_angles_xy_f64};
+matrix3_from_euler_angles_yx       :: proc{matrix3_from_euler_angles_yx_f16,       matrix3_from_euler_angles_yx_f32,       matrix3_from_euler_angles_yx_f64};
+matrix3_from_euler_angles_xz       :: proc{matrix3_from_euler_angles_xz_f16,       matrix3_from_euler_angles_xz_f32,       matrix3_from_euler_angles_xz_f64};
+matrix3_from_euler_angles_zx       :: proc{matrix3_from_euler_angles_zx_f16,       matrix3_from_euler_angles_zx_f32,       matrix3_from_euler_angles_zx_f64};
+matrix3_from_euler_angles_yz       :: proc{matrix3_from_euler_angles_yz_f16,       matrix3_from_euler_angles_yz_f32,       matrix3_from_euler_angles_yz_f64};
+matrix3_from_euler_angles_zy       :: proc{matrix3_from_euler_angles_zy_f16,       matrix3_from_euler_angles_zy_f32,       matrix3_from_euler_angles_zy_f64};
+matrix3_from_euler_angles_xyz      :: proc{matrix3_from_euler_angles_xyz_f16,      matrix3_from_euler_angles_xyz_f32,      matrix3_from_euler_angles_xyz_f64};
+matrix3_from_euler_angles_yxz      :: proc{matrix3_from_euler_angles_yxz_f16,      matrix3_from_euler_angles_yxz_f32,      matrix3_from_euler_angles_yxz_f64};
+matrix3_from_euler_angles_xzx      :: proc{matrix3_from_euler_angles_xzx_f16,      matrix3_from_euler_angles_xzx_f32,      matrix3_from_euler_angles_xzx_f64};
+matrix3_from_euler_angles_xyx      :: proc{matrix3_from_euler_angles_xyx_f16,      matrix3_from_euler_angles_xyx_f32,      matrix3_from_euler_angles_xyx_f64};
+matrix3_from_euler_angles_yxy      :: proc{matrix3_from_euler_angles_yxy_f16,      matrix3_from_euler_angles_yxy_f32,      matrix3_from_euler_angles_yxy_f64};
+matrix3_from_euler_angles_yzy      :: proc{matrix3_from_euler_angles_yzy_f16,      matrix3_from_euler_angles_yzy_f32,      matrix3_from_euler_angles_yzy_f64};
+matrix3_from_euler_angles_zyz      :: proc{matrix3_from_euler_angles_zyz_f16,      matrix3_from_euler_angles_zyz_f32,      matrix3_from_euler_angles_zyz_f64};
+matrix3_from_euler_angles_zxz      :: proc{matrix3_from_euler_angles_zxz_f16,      matrix3_from_euler_angles_zxz_f32,      matrix3_from_euler_angles_zxz_f64};
+matrix3_from_euler_angles_xzy      :: proc{matrix3_from_euler_angles_xzy_f16,      matrix3_from_euler_angles_xzy_f32,      matrix3_from_euler_angles_xzy_f64};
+matrix3_from_euler_angles_yzx      :: proc{matrix3_from_euler_angles_yzx_f16,      matrix3_from_euler_angles_yzx_f32,      matrix3_from_euler_angles_yzx_f64};
+matrix3_from_euler_angles_zyx      :: proc{matrix3_from_euler_angles_zyx_f16,      matrix3_from_euler_angles_zyx_f32,      matrix3_from_euler_angles_zyx_f64};
+matrix3_from_euler_angles_zxy      :: proc{matrix3_from_euler_angles_zxy_f16,      matrix3_from_euler_angles_zxy_f32,      matrix3_from_euler_angles_zxy_f64};
+matrix3_from_yaw_pitch_roll        :: proc{matrix3_from_yaw_pitch_roll_f16,        matrix3_from_yaw_pitch_roll_f32,        matrix3_from_yaw_pitch_roll_f64};
+
+euler_angles_from_matrix3          :: proc{euler_angles_from_matrix3_f16,          euler_angles_from_matrix3_f32,          euler_angles_from_matrix3_f64};
+euler_angles_xyz_from_matrix3      :: proc{euler_angles_xyz_from_matrix3_f16,      euler_angles_xyz_from_matrix3_f32,      euler_angles_xyz_from_matrix3_f64};
+euler_angles_yxz_from_matrix3      :: proc{euler_angles_yxz_from_matrix3_f16,      euler_angles_yxz_from_matrix3_f32,      euler_angles_yxz_from_matrix3_f64};
+euler_angles_xzx_from_matrix3      :: proc{euler_angles_xzx_from_matrix3_f16,      euler_angles_xzx_from_matrix3_f32,      euler_angles_xzx_from_matrix3_f64};
+euler_angles_xyx_from_matrix3      :: proc{euler_angles_xyx_from_matrix3_f16,      euler_angles_xyx_from_matrix3_f32,      euler_angles_xyx_from_matrix3_f64};
+euler_angles_yxy_from_matrix3      :: proc{euler_angles_yxy_from_matrix3_f16,      euler_angles_yxy_from_matrix3_f32,      euler_angles_yxy_from_matrix3_f64};
+euler_angles_yzy_from_matrix3      :: proc{euler_angles_yzy_from_matrix3_f16,      euler_angles_yzy_from_matrix3_f32,      euler_angles_yzy_from_matrix3_f64};
+euler_angles_zyz_from_matrix3      :: proc{euler_angles_zyz_from_matrix3_f16,      euler_angles_zyz_from_matrix3_f32,      euler_angles_zyz_from_matrix3_f64};
+euler_angles_zxz_from_matrix3      :: proc{euler_angles_zxz_from_matrix3_f16,      euler_angles_zxz_from_matrix3_f32,      euler_angles_zxz_from_matrix3_f64};
+euler_angles_xzy_from_matrix3      :: proc{euler_angles_xzy_from_matrix3_f16,      euler_angles_xzy_from_matrix3_f32,      euler_angles_xzy_from_matrix3_f64};
+euler_angles_yzx_from_matrix3      :: proc{euler_angles_yzx_from_matrix3_f16,      euler_angles_yzx_from_matrix3_f32,      euler_angles_yzx_from_matrix3_f64};
+euler_angles_zyx_from_matrix3      :: proc{euler_angles_zyx_from_matrix3_f16,      euler_angles_zyx_from_matrix3_f32,      euler_angles_zyx_from_matrix3_f64};
+euler_angles_zxy_from_matrix3      :: proc{euler_angles_zxy_from_matrix3_f16,      euler_angles_zxy_from_matrix3_f32,      euler_angles_zxy_from_matrix3_f64};
+
+matrix4_from_euler_angles          :: proc{matrix4_from_euler_angles_f16,          matrix4_from_euler_angles_f32,          matrix4_from_euler_angles_f64};
+matrix4_from_euler_angle_x         :: proc{matrix4_from_euler_angle_x_f16,         matrix4_from_euler_angle_x_f32,         matrix4_from_euler_angle_x_f64};
+matrix4_from_euler_angle_y         :: proc{matrix4_from_euler_angle_y_f16,         matrix4_from_euler_angle_y_f32,         matrix4_from_euler_angle_y_f64};
+matrix4_from_euler_angle_z         :: proc{matrix4_from_euler_angle_z_f16,         matrix4_from_euler_angle_z_f32,         matrix4_from_euler_angle_z_f64};
+matrix4_from_derived_euler_angle_x :: proc{matrix4_from_derived_euler_angle_x_f16, matrix4_from_derived_euler_angle_x_f32, matrix4_from_derived_euler_angle_x_f64};
+matrix4_from_derived_euler_angle_y :: proc{matrix4_from_derived_euler_angle_y_f16, matrix4_from_derived_euler_angle_y_f32, matrix4_from_derived_euler_angle_y_f64};
+matrix4_from_derived_euler_angle_z :: proc{matrix4_from_derived_euler_angle_z_f16, matrix4_from_derived_euler_angle_z_f32, matrix4_from_derived_euler_angle_z_f64};
+matrix4_from_euler_angles_xy       :: proc{matrix4_from_euler_angles_xy_f16,       matrix4_from_euler_angles_xy_f32,       matrix4_from_euler_angles_xy_f64};
+matrix4_from_euler_angles_yx       :: proc{matrix4_from_euler_angles_yx_f16,       matrix4_from_euler_angles_yx_f32,       matrix4_from_euler_angles_yx_f64};
+matrix4_from_euler_angles_xz       :: proc{matrix4_from_euler_angles_xz_f16,       matrix4_from_euler_angles_xz_f32,       matrix4_from_euler_angles_xz_f64};
+matrix4_from_euler_angles_zx       :: proc{matrix4_from_euler_angles_zx_f16,       matrix4_from_euler_angles_zx_f32,       matrix4_from_euler_angles_zx_f64};
+matrix4_from_euler_angles_yz       :: proc{matrix4_from_euler_angles_yz_f16,       matrix4_from_euler_angles_yz_f32,       matrix4_from_euler_angles_yz_f64};
+matrix4_from_euler_angles_zy       :: proc{matrix4_from_euler_angles_zy_f16,       matrix4_from_euler_angles_zy_f32,       matrix4_from_euler_angles_zy_f64};
+matrix4_from_euler_angles_xyz      :: proc{matrix4_from_euler_angles_xyz_f16,      matrix4_from_euler_angles_xyz_f32,      matrix4_from_euler_angles_xyz_f64};
+matrix4_from_euler_angles_yxz      :: proc{matrix4_from_euler_angles_yxz_f16,      matrix4_from_euler_angles_yxz_f32,      matrix4_from_euler_angles_yxz_f64};
+matrix4_from_euler_angles_xzx      :: proc{matrix4_from_euler_angles_xzx_f16,      matrix4_from_euler_angles_xzx_f32,      matrix4_from_euler_angles_xzx_f64};
+matrix4_from_euler_angles_xyx      :: proc{matrix4_from_euler_angles_xyx_f16,      matrix4_from_euler_angles_xyx_f32,      matrix4_from_euler_angles_xyx_f64};
+matrix4_from_euler_angles_yxy      :: proc{matrix4_from_euler_angles_yxy_f16,      matrix4_from_euler_angles_yxy_f32,      matrix4_from_euler_angles_yxy_f64};
+matrix4_from_euler_angles_yzy      :: proc{matrix4_from_euler_angles_yzy_f16,      matrix4_from_euler_angles_yzy_f32,      matrix4_from_euler_angles_yzy_f64};
+matrix4_from_euler_angles_zyz      :: proc{matrix4_from_euler_angles_zyz_f16,      matrix4_from_euler_angles_zyz_f32,      matrix4_from_euler_angles_zyz_f64};
+matrix4_from_euler_angles_zxz      :: proc{matrix4_from_euler_angles_zxz_f16,      matrix4_from_euler_angles_zxz_f32,      matrix4_from_euler_angles_zxz_f64};
+matrix4_from_euler_angles_xzy      :: proc{matrix4_from_euler_angles_xzy_f16,      matrix4_from_euler_angles_xzy_f32,      matrix4_from_euler_angles_xzy_f64};
+matrix4_from_euler_angles_yzx      :: proc{matrix4_from_euler_angles_yzx_f16,      matrix4_from_euler_angles_yzx_f32,      matrix4_from_euler_angles_yzx_f64};
+matrix4_from_euler_angles_zyx      :: proc{matrix4_from_euler_angles_zyx_f16,      matrix4_from_euler_angles_zyx_f32,      matrix4_from_euler_angles_zyx_f64};
+matrix4_from_euler_angles_zxy      :: proc{matrix4_from_euler_angles_zxy_f16,      matrix4_from_euler_angles_zxy_f32,      matrix4_from_euler_angles_zxy_f64};
+matrix4_from_yaw_pitch_roll        :: proc{matrix4_from_yaw_pitch_roll_f16,        matrix4_from_yaw_pitch_roll_f32,        matrix4_from_yaw_pitch_roll_f64};
+
+euler_angles_from_matrix4          :: proc{euler_angles_from_matrix4_f16,          euler_angles_from_matrix4_f32,          euler_angles_from_matrix4_f64};
+euler_angles_xyz_from_matrix4      :: proc{euler_angles_xyz_from_matrix4_f16,      euler_angles_xyz_from_matrix4_f32,      euler_angles_xyz_from_matrix4_f64};
+euler_angles_yxz_from_matrix4      :: proc{euler_angles_yxz_from_matrix4_f16,      euler_angles_yxz_from_matrix4_f32,      euler_angles_yxz_from_matrix4_f64};
+euler_angles_xzx_from_matrix4      :: proc{euler_angles_xzx_from_matrix4_f16,      euler_angles_xzx_from_matrix4_f32,      euler_angles_xzx_from_matrix4_f64};
+euler_angles_xyx_from_matrix4      :: proc{euler_angles_xyx_from_matrix4_f16,      euler_angles_xyx_from_matrix4_f32,      euler_angles_xyx_from_matrix4_f64};
+euler_angles_yxy_from_matrix4      :: proc{euler_angles_yxy_from_matrix4_f16,      euler_angles_yxy_from_matrix4_f32,      euler_angles_yxy_from_matrix4_f64};
+euler_angles_yzy_from_matrix4      :: proc{euler_angles_yzy_from_matrix4_f16,      euler_angles_yzy_from_matrix4_f32,      euler_angles_yzy_from_matrix4_f64};
+euler_angles_zyz_from_matrix4      :: proc{euler_angles_zyz_from_matrix4_f16,      euler_angles_zyz_from_matrix4_f32,      euler_angles_zyz_from_matrix4_f64};
+euler_angles_zxz_from_matrix4      :: proc{euler_angles_zxz_from_matrix4_f16,      euler_angles_zxz_from_matrix4_f32,      euler_angles_zxz_from_matrix4_f64};
+euler_angles_xzy_from_matrix4      :: proc{euler_angles_xzy_from_matrix4_f16,      euler_angles_xzy_from_matrix4_f32,      euler_angles_xzy_from_matrix4_f64};
+euler_angles_yzx_from_matrix4      :: proc{euler_angles_yzx_from_matrix4_f16,      euler_angles_yzx_from_matrix4_f32,      euler_angles_yzx_from_matrix4_f64};
+euler_angles_zyx_from_matrix4      :: proc{euler_angles_zyx_from_matrix4_f16,      euler_angles_zyx_from_matrix4_f32,      euler_angles_zyx_from_matrix4_f64};
+euler_angles_zxy_from_matrix4      :: proc{euler_angles_zxy_from_matrix4_f16,      euler_angles_zxy_from_matrix4_f32,      euler_angles_zxy_from_matrix4_f64};

core/math/linalg/swizzle.odin

@@ -0,0 +1,222 @@
+package linalg
+
+Scalar_Components :: enum u8 {
+	x = 0,
+	r = 0,
+}
+
+Vector2_Components :: enum u8 {
+	x = 0,
+	y = 1,
+	r = 0,
+	g = 1,
+}
+
+Vector3_Components :: enum u8 {
+	x = 0,
+	y = 1,
+	z = 2,
+	r = 0,
+	g = 1,
+	b = 2,
+}
+
+Vector4_Components :: enum u8 {
+	x = 0,
+	y = 1,
+	z = 2,
+	w = 3,
+	r = 0,
+	g = 1,
+	b = 2,
+	a = 3,
+}
+
+scalar_f32_swizzle1 :: proc(f: f32, c0: Scalar_Components) -> f32 {
+	return f;
+}
+scalar_f32_swizzle2 :: proc(f: f32, c0, c1: Scalar_Components) -> Vector2f32 {
+	return {f, f};
+}
+scalar_f32_swizzle3 :: proc(f: f32, c0, c1, c2: Scalar_Components) -> Vector3f32 {
+	return {f, f, f};
+}
+scalar_f32_swizzle4 :: proc(f: f32, c0, c1, c2, c3: Scalar_Components) -> Vector4f32 {
+	return {f, f, f, f};
+}
+
+vector2f32_swizzle1 :: proc(v: Vector2f32, c0: Vector2_Components) -> f32 {
+	return v[c0];
+}
+vector2f32_swizzle2 :: proc(v: Vector2f32, c0, c1: Vector2_Components) -> Vector2f32 {
+	return {v[c0], v[c1]};
+}
+vector2f32_swizzle3 :: proc(v: Vector2f32, c0, c1, c2: Vector2_Components) -> Vector3f32 {
+	return {v[c0], v[c1], v[c2]};
+}
+vector2f32_swizzle4 :: proc(v: Vector2f32, c0, c1, c2, c3: Vector2_Components) -> Vector4f32 {
+	return {v[c0], v[c1], v[c2], v[c3]};
+}
+
+
+vector3f32_swizzle1 :: proc(v: Vector3f32, c0: Vector3_Components) -> f32 {
+	return v[c0];
+}
+vector3f32_swizzle2 :: proc(v: Vector3f32, c0, c1: Vector3_Components) -> Vector2f32 {
+	return {v[c0], v[c1]};
+}
+vector3f32_swizzle3 :: proc(v: Vector3f32, c0, c1, c2: Vector3_Components) -> Vector3f32 {
+	return {v[c0], v[c1], v[c2]};
+}
+vector3f32_swizzle4 :: proc(v: Vector3f32, c0, c1, c2, c3: Vector3_Components) -> Vector4f32 {
+	return {v[c0], v[c1], v[c2], v[c3]};
+}
+
+vector4f32_swizzle1 :: proc(v: Vector4f32, c0: Vector4_Components) -> f32 {
+	return v[c0];
+}
+vector4f32_swizzle2 :: proc(v: Vector4f32, c0, c1: Vector4_Components) -> Vector2f32 {
+	return {v[c0], v[c1]};
+}
+vector4f32_swizzle3 :: proc(v: Vector4f32, c0, c1, c2: Vector4_Components) -> Vector3f32 {
+	return {v[c0], v[c1], v[c2]};
+}
+vector4f32_swizzle4 :: proc(v: Vector4f32, c0, c1, c2, c3: Vector4_Components) -> Vector4f32 {
+	return {v[c0], v[c1], v[c2], v[c3]};
+}
+
+
+scalar_f64_swizzle1 :: proc(f: f64, c0: Scalar_Components) -> f64 {
+	return f;
+}
+scalar_f64_swizzle2 :: proc(f: f64, c0, c1: Scalar_Components) -> Vector2f64 {
+	return {f, f};
+}
+scalar_f64_swizzle3 :: proc(f: f64, c0, c1, c2: Scalar_Components) -> Vector3f64 {
+	return {f, f, f};
+}
+scalar_f64_swizzle4 :: proc(f: f64, c0, c1, c2, c3: Scalar_Components) -> Vector4f64 {
+	return {f, f, f, f};
+}
+
+vector2f64_swizzle1 :: proc(v: Vector2f64, c0: Vector2_Components) -> f64 {
+	return v[c0];
+}
+vector2f64_swizzle2 :: proc(v: Vector2f64, c0, c1: Vector2_Components) -> Vector2f64 {
+	return {v[c0], v[c1]};
+}
+vector2f64_swizzle3 :: proc(v: Vector2f64, c0, c1, c2: Vector2_Components) -> Vector3f64 {
+	return {v[c0], v[c1], v[c2]};
+}
+vector2f64_swizzle4 :: proc(v: Vector2f64, c0, c1, c2, c3: Vector2_Components) -> Vector4f64 {
+	return {v[c0], v[c1], v[c2], v[c3]};
+}
+
+
+vector3f64_swizzle1 :: proc(v: Vector3f64, c0: Vector3_Components) -> f64 {
+	return v[c0];
+}
+vector3f64_swizzle2 :: proc(v: Vector3f64, c0, c1: Vector3_Components) -> Vector2f64 {
+	return {v[c0], v[c1]};
+}
+vector3f64_swizzle3 :: proc(v: Vector3f64, c0, c1, c2: Vector3_Components) -> Vector3f64 {
+	return {v[c0], v[c1], v[c2]};
+}
+vector3f64_swizzle4 :: proc(v: Vector3f64, c0, c1, c2, c3: Vector3_Components) -> Vector4f64 {
+	return {v[c0], v[c1], v[c2], v[c3]};
+}
+
+vector4f64_swizzle1 :: proc(v: Vector4f64, c0: Vector4_Components) -> f64 {
+	return v[c0];
+}
+vector4f64_swizzle2 :: proc(v: Vector4f64, c0, c1: Vector4_Components) -> Vector2f64 {
+	return {v[c0], v[c1]};
+}
+vector4f64_swizzle3 :: proc(v: Vector4f64, c0, c1, c2: Vector4_Components) -> Vector3f64 {
+	return {v[c0], v[c1], v[c2]};
+}
+vector4f64_swizzle4 :: proc(v: Vector4f64, c0, c1, c2, c3: Vector4_Components) -> Vector4f64 {
+	return {v[c0], v[c1], v[c2], v[c3]};
+}
+
+
+
+
+scalar_swizzle :: proc{
+	scalar_f32_swizzle1,
+	scalar_f32_swizzle2,
+	scalar_f32_swizzle3,
+	scalar_f32_swizzle4,
+	scalar_f64_swizzle1,
+	scalar_f64_swizzle2,
+	scalar_f64_swizzle3,
+	scalar_f64_swizzle4,
+};
+
+vector2_swizzle :: proc{
+	vector2f32_swizzle1,
+	vector2f32_swizzle2,
+	vector2f32_swizzle3,
+	vector2f32_swizzle4,
+	vector2f64_swizzle1,
+	vector2f64_swizzle2,
+	vector2f64_swizzle3,
+	vector2f64_swizzle4,
+};
+
+vector3_swizzle :: proc{
+	vector3f32_swizzle1,
+	vector3f32_swizzle2,
+	vector3f32_swizzle3,
+	vector3f32_swizzle4,
+	vector3f64_swizzle1,
+	vector3f64_swizzle2,
+	vector3f64_swizzle3,
+	vector3f64_swizzle4,
+};
+
+vector4_swizzle :: proc{
+	vector4f32_swizzle1,
+	vector4f32_swizzle2,
+	vector4f32_swizzle3,
+	vector4f32_swizzle4,
+	vector4f64_swizzle1,
+	vector4f64_swizzle2,
+	vector4f64_swizzle3,
+	vector4f64_swizzle4,
+};
+
+swizzle :: proc{
+	scalar_f32_swizzle1,
+	scalar_f32_swizzle2,
+	scalar_f32_swizzle3,
+	scalar_f32_swizzle4,
+	scalar_f64_swizzle1,
+	scalar_f64_swizzle2,
+	scalar_f64_swizzle3,
+	scalar_f64_swizzle4,
+	vector2f32_swizzle1,
+	vector2f32_swizzle2,
+	vector2f32_swizzle3,
+	vector2f32_swizzle4,
+	vector2f64_swizzle1,
+	vector2f64_swizzle2,
+	vector2f64_swizzle3,
+	vector2f64_swizzle4,
+	vector3f32_swizzle1,
+	vector3f32_swizzle2,
+	vector3f32_swizzle3,
+	vector3f32_swizzle4,
+	vector3f64_swizzle1,
+	vector3f64_swizzle2,
+	vector3f64_swizzle3,
+	vector3f64_swizzle4,
+	vector4f32_swizzle1,
+	vector4f32_swizzle2,
+	vector4f32_swizzle3,
+	vector4f32_swizzle4,
+	vector4f64_swizzle1,
+	vector4f64_swizzle2,
+	vector4f64_swizzle3,
+	vector4f64_swizzle4,
+};