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Finished initial implmentation bootstrap generation and singleheader implementation.

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This commit is contained in:
Edward R. Gonzalez 2023-07-25 15:12:51 -04:00
parent ebe049d3a0
commit 62b0ed2112
26 changed files with 336 additions and 95 deletions
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2
.gitignore vendored
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@ -6,6 +6,8 @@ build/*
**/*.gen.*
**/gen/gen.hpp
**/gen/gen.cpp
**/gen/gen_dep.hpp
**/gen/gen_dep.cpp
gencpp.hpp
gencpp.cpp

9
.vscode/launch.json vendored
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@ -31,6 +31,15 @@
"args": [],
"cwd": "${workspaceFolder}/project/",
"visualizerFile": "${workspaceFolder}/scripts/gencpp.natvis"
},
{
"type": "cppvsdbg",
"request": "launch",
"name": "Debug singleheader vsdbg",
"program": "${workspaceFolder}/singleheader/build/gencpp_singleheader.exe",
"args": [],
"cwd": "${workspaceFolder}/singleheader/",
"visualizerFile": "${workspaceFolder}/scripts/gencpp.natvis"
}
]
}

4
Readme.md
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@ -171,8 +171,8 @@ An example of building is provided within project, singleheader, and test.
**Project**
`gen.bootstrap.cpp` generates a segmented version of the library following a more traditional cpp convention.
With the exception that: *The component hpp and cpp files are all included into their respective header and source*
`gen.bootstrap.cpp` generates a segmented version of the library where code is divided into `gen.hpp`, `gen.cpp`, `gen_dep.hpp`, and `gen_dep.cpp`.
(Similar whats there already, but with the includes injected)
**Singleheader**

0
project/components/AttributeTokens.csv Normal file
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0
project/components/ECode.csv Normal file
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0
project/components/EOperator.csv Normal file
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0
project/components/ESpecifier.csv Normal file
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0
project/components/ETokType.csv Normal file
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2
project/components/gen.header_end.hpp
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@ -402,7 +402,7 @@ StrC token_fmt_impl( sw num, ... )
# define GEN_MAX_NAME_LENGTH 128
#endif
#ifndef GEN_MAX_UNTYPED_STR_LENGTH
# define GEN_MAX_UNTYPED_STR_LENGTH kilobytes(640)
# define GEN_MAX_UNTYPED_STR_LENGTH megabytes(1)
#endif
#ifndef GEN_TOKEN_FMT_TOKEN_MAP_MEM_SIZE
# define GEN_TOKEN_FMT_TOKEN_MAP_MEM_SIZE kilobytes(4)

2
project/components/gen.header_start.hpp
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@ -13,5 +13,5 @@
//! If its desired to roll your own dependencies, define GEN_ROLL_OWN_DEPENDENCIES before including this file.
// Dependencies are derived from the c-zpl library: https://github.com/zpl-c/zpl
#ifndef GEN_ROLL_OWN_DEPENDENCIES
# include "dependencies/gen.dep.hpp"
# include "gen.dep.hpp"
#endif

9
project/components/gen.impl_start.cpp Normal file
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@ -0,0 +1,9 @@
#if ! defined(GEN_DONT_ENFORCE_GEN_TIME_GUARD) && ! defined(GEN_TIME)
# error Gen.hpp : GEN_TIME not defined
#endif
//! If its desired to roll your own dependencies, define GEN_ROLL_OWN_DEPENDENCIES before including this file.
//! Dependencies are derived from the c-zpl library: https://github.com/zpl-c/zpl
#ifndef GEN_ROLL_OWN_DEPENDENCIES
# include "gen.dep.cpp"
#endif

19
project/dependencies/gen.dep.cpp
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@ -1,19 +0,0 @@
// This file is intended to be included within gen.cpp (There is no pragma diagnostic ignores)
#include "gen.dep.hpp"
#include "gen.impl_start.cpp"
GEN_NS_BEGIN
#include "gen.debug.cpp"
#include "gen.string_ops.cpp"
#include "gen.printing.cpp"
#include "gen.memory.cpp"
#include "gen.parsing.cpp"
#include "gen.hashing.cpp"
#include "gen.string.cpp"
#include "gen.timing.cpp"
#include "gen.file_handling.cpp"
GEN_NS_END

20
project/dependencies/gen.dep.hpp
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@ -1,20 +0,0 @@
// This file is intended to be included within gen.hpp (There is no pragma diagnostic ignores)
#pragma once
#include "gen.header_start.hpp"
GEN_NS_BEGIN
#include "gen.macros.hpp"
#include "gen.basic_types.hpp"
#include "gen.debug.hpp"
#include "gen.memory.hpp"
#include "gen.string_ops.hpp"
#include "gen.printing.hpp"
#include "gen.containers.hpp"
#include "gen.string.hpp"
#include "gen.file_handling.hpp"
#include "gen.parsing.hpp"
#include "gen.timing.hpp"
GEN_NS_END

8
project/dependencies/gen.header_start.hpp
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@ -129,11 +129,3 @@
# include <intrin.h>
# endif
#pragma endregion Mandatory Includes
#ifdef GEN_DONT_USE_NAMESPACE
# define GEN_NS_BEGIN
# define GEN_NS_END
#else
# define GEN_NS_BEGIN namespace gen {
# define GEN_NS_END }
#endif

2
project/dependencies/gen.printing.hpp
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@ -1,7 +1,7 @@
struct FileInfo;
#ifndef GEN_PRINTF_MAXLEN
# define GEN_PRINTF_MAXLEN 65536
# define GEN_PRINTF_MAXLEN kilobytes(128)
#endif
// NOTE: A locally persisting buffer is used internally

2
project/filesystem/gen.scanner.hpp
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@ -10,7 +10,7 @@ Code scan_file( char const* path )
FileError error = file_open_mode( & file, EFileMode_READ, path );
if ( error != EFileError_NONE )
{
fatal( "scan_file: Could not open genc.macro.h: %s", path );
fatal( "scan_file: Could not open: %s", path );
}
sw fsize = file_size( & file );

127
project/gen.bootstrap.cpp
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@ -35,36 +35,135 @@ int gen_main()
Code push_ignores = scan_file( "helpers/gen.push_ignores.inline.hpp" );
Code pop_ignores = scan_file( "helpers/gen.pop_ignores.inline.hpp" );
Builder gen_deps_header;
// gen_dep.hpp
{
Code header_start = scan_file( "dependencies/gen.header_start.hpp" );
Code nspace_macro = untyped_str( namespace_by_default ? nspace_default : nspace_non_default );
Code macros = scan_file( "dependencies/gen.macros.hpp" );
Code basic_types = scan_file( "dependencies/gen.basic_types.hpp" );
Code debug = scan_file( "dependencies/gen.debug.hpp" );
Code memory = scan_file( "dependencies/gen.memory.hpp" );
Code string_ops = scan_file( "dependencies/gen.string_ops.hpp" );
Code printing = scan_file( "dependencies/gen.printing.hpp" );
Code containers = scan_file( "dependencies/gen.containers.hpp" );
Code string = scan_file( "dependencies/gen.string.hpp" );
Code file_handling = scan_file( "dependencies/gen.file_handling.hpp" );
Code parsing = scan_file( "dependencies/gen.parsing.hpp" );
Code timing = scan_file( "dependencies/gen.timing.hpp" );
Builder
deps_header;
deps_header.open("gen/gen_dep.hpp");
deps_header.print_fmt("// This file is intended to be included within gen.cpp (There is no pragma diagnostic ignores)\n\n");
deps_header.print_fmt("#pragma once\n\n");
deps_header.print( push_ignores );
deps_header.print( header_start );
deps_header.print( nspace_macro );
deps_header.print_fmt( "GEN_NS_BEGIN\n\n");
deps_header.print( macros );
deps_header.print( basic_types );
deps_header.print( debug );
deps_header.print( memory );
deps_header.print( string_ops );
deps_header.print( printing );
deps_header.print( containers );
deps_header.print( string );
deps_header.print( file_handling );
deps_header.print( parsing );
deps_header.print( timing );
deps_header.print_fmt( "GEN_NS_END\n\n");
deps_header.print( pop_ignores );
deps_header.write();
}
Builder gen_deps_impl;
// gen_dep.cpp
{
CodeInclude header = def_include( txt_StrC("gen_dep.hpp") );
Code impl_start = scan_file( "dependencies/gen.impl_start.cpp" );
Code debug = scan_file( "dependencies/gen.debug.cpp" );
Code string_ops = scan_file( "dependencies/gen.string_ops.cpp" );
Code printing = scan_file( "dependencies/gen.printing.cpp" );
Code memory = scan_file( "dependencies/gen.memory.cpp" );
Code parsing = scan_file( "dependencies/gen.parsing.cpp" );
Code hashing = scan_file( "dependencies/gen.hashing.cpp" );
Code string = scan_file( "dependencies/gen.string.cpp" );
Code timing = scan_file( "dependencies/gen.timing.cpp" );
Builder
deps_impl;
deps_impl.open("gen/gen_dep.cpp");
deps_impl.print_fmt("// This file is intended to be included within gen.cpp (There is no pragma diagnostic ignores)\n\n");
deps_impl.print( impl_start );
deps_impl.print( header );
deps_impl.print_fmt( "\nGEN_NS_BEGIN\n");
deps_impl.print( debug );
deps_impl.print( string_ops );
deps_impl.print( printing );
deps_impl.print( memory );
deps_impl.print( parsing );
deps_impl.print( string );
deps_impl.print( timing );
deps_impl.print_fmt( "GEN_NS_END\n\n");
deps_impl.write();
}
Builder gen_header;
// gen.hpp
{
Code header_start = scan_file( "components/gen.header_start.hpp" );
Code nspace_macro = untyped_str( namespace_by_default ? nspace_default : nspace_non_default );
Code types = scan_file( "components/gen.types.hpp" );
Code data_structs = scan_file( "components/gen.data_structures.hpp" );
Code interface = scan_file( "components/gen.interface.hpp" );
Code header_end = scan_file( "components/gen.header_end.hpp" );
gen_header.open( "gen/gen.hpp" );
gen_header.print_fmt("#pragma once\n\n");
gen_header.print( push_ignores );
gen_header.print( header_start );
gen_header.print( nspace_macro );
gen_header.print_fmt( "GEN_NS_BEGIN\n");
gen_header.print_fmt( "\nGEN_NS_END\n\n");
gen_header.print( pop_ignores );
gen_header.write();
Builder
header;
header.open( "gen/gen.hpp" );
header.print_fmt("#pragma once\n\n");
header.print( push_ignores );
header.print( header_start );
header.print( nspace_macro );
header.print_fmt( "GEN_NS_BEGIN\n\n");
header.print( types );
header.print( data_structs );
header.print( interface );
header.print( header_end );
header.print_fmt( "GEN_NS_END\n\n");
header.print( pop_ignores );
header.write();
}
Builder gen_impl;
// gen.cpp
{
Code impl_start = scan_file( "components/gen.impl_start.cpp" );
CodeInclude header = def_include( txt_StrC("gen.hpp") );
Code data = scan_file( "components/gen.data.cpp" );
Code ast_case_macros = scan_file( "components/gen.ast_case_macros.cpp" );
Code ast = scan_file( "components/gen.ast.cpp" );
Code interface = scan_file( "components/gen.interface.cpp" );
Code upfront = scan_file( "components/gen.interface.upfront.cpp" );
Code parsing = scan_file( "components/gen.interface.parsing.cpp" );
Code untyped = scan_file( "components/gen.untyped.cpp" );
Code builder = scan_file( "filesystem/gen.builder.cpp" );
Builder
impl;
impl.open( "gen/gen.cpp" );
impl.print( push_ignores );
impl.print( impl_start );
impl.print( header );
impl.print_fmt( "\nGEN_NS_BEGIN\n\n");
impl.print( data );
impl.print( ast_case_macros );
impl.print( ast );
impl.print( interface );
impl.print( upfront );
impl.print( parsing );
impl.print( untyped );
impl.print_fmt( "GEN_NS_END\n\n");
impl.print( pop_ignores );
impl.write();
}
gen::deinit();

5
project/gen.cpp
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@ -3,14 +3,13 @@
// ReSharper disable CppClangTidyClangDiagnosticSwitchEnum
#if ! defined(GEN_DONT_ENFORCE_GEN_TIME_GUARD) && ! defined(GEN_TIME)
#error Gen.hpp : GEN_TIME not defined
# error Gen.hpp : GEN_TIME not defined
#endif
//! If its desired to roll your own dependencies, define GEN_ROLL_OWN_DEPENDENCIES before including this file.
//! Dependencies are derived from the c-zpl library: https://github.com/zpl-c/zpl
#ifndef GEN_ROLL_OWN_DEPENDENCIES
# include "dependencies/gen.dep.cpp"
# include "gen.dep.cpp"
#endif
#include "gen.hpp"

19
project/gen.dep.cpp Normal file
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@ -0,0 +1,19 @@
// This file is intended to be included within gen.cpp (There is no pragma diagnostic ignores)
#include "gen.dep.hpp"
#include "dependencies/gen.impl_start.cpp"
GEN_NS_BEGIN
#include "dependencies/gen.debug.cpp"
#include "dependencies/gen.string_ops.cpp"
#include "dependencies/gen.printing.cpp"
#include "dependencies/gen.memory.cpp"
#include "dependencies/gen.parsing.cpp"
#include "dependencies/gen.hashing.cpp"
#include "dependencies/gen.string.cpp"
#include "dependencies/gen.timing.cpp"
#include "dependencies/gen.file_handling.cpp"
GEN_NS_END

28
project/gen.dep.hpp Normal file
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@ -0,0 +1,28 @@
// This file is intended to be included within gen.hpp (There is no pragma diagnostic ignores)
#pragma once
#include "dependencies/gen.header_start.hpp"
#ifdef GEN_DONT_USE_NAMESPACE
# define GEN_NS_BEGIN
# define GEN_NS_END
#else
# define GEN_NS_BEGIN namespace gen {
# define GEN_NS_END }
#endif
GEN_NS_BEGIN
#include "dependencies/gen.macros.hpp"
#include "dependencies/gen.basic_types.hpp"
#include "dependencies/gen.debug.hpp"
#include "dependencies/gen.memory.hpp"
#include "dependencies/gen.string_ops.hpp"
#include "dependencies/gen.printing.hpp"
#include "dependencies/gen.containers.hpp"
#include "dependencies/gen.string.hpp"
#include "dependencies/gen.file_handling.hpp"
#include "dependencies/gen.parsing.hpp"
#include "dependencies/gen.timing.hpp"
GEN_NS_END

8
project/gen.hpp
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@ -11,6 +11,14 @@
#include "helpers/gen.push_ignores.inline.hpp"
#include "components/gen.header_start.hpp"
#ifdef GEN_DONT_USE_NAMESPACE
# define GEN_NS_BEGIN
# define GEN_NS_END
#else
# define GEN_NS_BEGIN namespace gen {
# define GEN_NS_END }
#endif
GEN_NS_BEGIN
#include "components/gen.types.hpp"

4
scripts/bootstrap.ci.ps1
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@ -60,10 +60,10 @@ $formatParams = @(
'-verbose'
)
$include = @('gencpp.hpp', 'gencpp.cpp')
$include = @('gen.hpp', 'gen.cpp', 'gen_dep.hpp', 'gen_dep.cpp')
$exclude = $null
$targetFiles = @(Get-ChildItem -Recurse -Path $path_project -Include $include -Exclude $exclude | Select-Object -ExpandProperty FullName)
$targetFiles = @(Get-ChildItem -Recurse -Path $path_project_gen -Include $include -Exclude $exclude | Select-Object -ExpandProperty FullName)
clang-format $formatParams $targetFiles
Write-Host "`nFormatting complete"

8
scripts/clean.ps1
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@ -9,6 +9,7 @@ $path_project_build = Join-Path $path_project build
$path_singleheader_build = Join-Path $path_singleheader build
$path_project_gen = Join-Path $path_project gen
$path_singleheader_gen = Join-Path $path_singleheader gen
$path_x64 = Join-Path $path_root x64
if ( Test-Path $path_project_build)
{
@ -30,7 +31,12 @@ if ( Test-Path $path_gen_build )
Remove-Item $path_gen_build -Recurse
}
[string[]] $include = 'gen.hpp', 'gen.cpp'
if ( Test-Path $path_x64)
{
Remove-Item $path_x64 -Recurse
}
[string[]] $include = 'gen.hpp', 'gen.cpp', 'gen_dep.hpp', 'gen_dep.cpp'
[string[]] $exclude =
$files = Get-ChildItem -Recurse -Path $path_project_gen -Include $include -Exclude $exclude

6
scripts/singleheader.ci.ps1
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@ -18,7 +18,7 @@ $path_singleheader = Join-Path $path_root singleheader
$path_singleheader_build = Join-Path $path_singleheader build
$path_singleheader_gen = Join-Path $path_singleheader gen
write-host "`n`nBuilding gencpp bootstrap`n"
write-host "`n`nBuilding gencpp singleheader`n"
if ( -not( Test-Path $path_singleheader_build) )
{
@ -49,7 +49,7 @@ if ( -not(Test-Path($path_singleheader_gen) )) {
# Run meta-program
$gencpp_singleheader = Join-Path $path_singleheader_build gencpp_singleheader.exe
Write-Host `nRunning gencpp bootstrap...
Write-Host `nRunning gencpp singleheader...
& $gencpp_singleheader
# Format generated files
@ -60,7 +60,7 @@ $formatParams = @(
'-verbose'
)
$include = @('gencpp.hpp')
$include = @('gen.hpp')
$exclude = $null
$targetFiles = @(Get-ChildItem -Recurse -Path $path_project -Include $include -Exclude $exclude | Select-Object -ExpandProperty FullName)

5
singleheader/components/gen.header_start.hpp
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@ -5,7 +5,10 @@
Public Address:
https://github.com/Ed94/gencpp
This is a single header variant of the library.
Define GEN_IMPLEMENTATION before including this file in a single compilation unit.
*/
#if ! defined(GEN_DONT_ENFORCE_GEN_TIME_GUARD) && ! defined(GEN_TIME)
# error Gen.hpp : GEN_TIME not defined
#endif
#endif

142
singleheader/gen.singleheader.cpp
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@ -28,49 +28,155 @@ constexpr StrC nspace_non_default = txt_StrC(R"(
#endif
)");
constexpr StrC gen_implementation_guard = txt_StrC(R"(
constexpr StrC implementation_guard_start = txt_StrC(R"(
#pragma region GENCPP IMPLEMENTATION GUARD
#if ! defined(GEN_IMPLEMENTATION)
# define GEN_IMPLEMENTATION
)");
constexpr StrC gen_implementation_end = txt_StrC(R"(
constexpr StrC implementation_guard_end = txt_StrC(R"(
#endif
#pragma endregion GENCPP IMPLEMENTATION GUARD
)");
constexpr StrC roll_own_dependencies_guard_start = txt_StrC(R"(
//! If its desired to roll your own dependencies, define GEN_ROLL_OWN_DEPENDENCIES before including this file.
// Dependencies are derived from the c-zpl library: https://github.com/zpl-c/zpl
#ifndef GEN_ROLL_OWN_DEPENDENCIES
)");
constexpr StrC roll_own_dependencies_guard_end = txt_StrC(R"(
// GEN_ROLL_OWN_DEPENDENCIES
#endif
)");
int gen_main()
{
gen::init();
Code push_ignores = scan_file( "../project/helpers/gen.push_ignores.inline.hpp" );
Code pop_ignores = scan_file( "../project/helpers/gen.pop_ignores.inline.hpp" );
#define project_dir "../project/"
Code push_ignores = scan_file( project_dir "helpers/gen.push_ignores.inline.hpp" );
Code pop_ignores = scan_file( project_dir "helpers/gen.pop_ignores.inline.hpp" );
Code header_start = scan_file( "components/gen.header_start.hpp" );
Code nspace_macro = untyped_str( namespace_by_default ? nspace_default : nspace_non_default );
Builder gen_header;
gen_header.open( "gen/gen.hpp" );
gen_header.print( push_ignores );
Builder
header;
header.open( "gen/gen.hpp" );
header.print( push_ignores );
header.print_fmt("#pragma once\n\n");
// Headers
gen_header.print_fmt("#pragma once\n\n");
gen_header.print( header_start );
gen_header.print( nspace_macro );
gen_header.print_fmt( "GEN_NS_BEGIN\n");
{
header.print( header_start );
header.print( nspace_macro );
gen_header.print_fmt( "\nGEN_NS_END\n");
{
header.print_fmt( roll_own_dependencies_guard_start );
Code header_start = scan_file( project_dir "dependencies/gen.header_start.hpp" );
Code macros = scan_file( project_dir "dependencies/gen.macros.hpp" );
Code basic_types = scan_file( project_dir "dependencies/gen.basic_types.hpp" );
Code debug = scan_file( project_dir "dependencies/gen.debug.hpp" );
Code memory = scan_file( project_dir "dependencies/gen.memory.hpp" );
Code string_ops = scan_file( project_dir "dependencies/gen.string_ops.hpp" );
Code printing = scan_file( project_dir "dependencies/gen.printing.hpp" );
Code containers = scan_file( project_dir "dependencies/gen.containers.hpp" );
Code string = scan_file( project_dir "dependencies/gen.string.hpp" );
Code file_handling = scan_file( project_dir "dependencies/gen.file_handling.hpp" );
Code parsing = scan_file( project_dir "dependencies/gen.parsing.hpp" );
Code timing = scan_file( project_dir "dependencies/gen.timing.hpp" );
header.print_fmt( "GEN_NS_BEGIN\n\n" );
header.print( header_start );
header.print( macros );
header.print( basic_types );
header.print( debug );
header.print( memory );
header.print( string_ops );
header.print( printing );
header.print( containers );
header.print( string );
header.print( file_handling );
header.print( parsing );
header.print( timing );
header.print_fmt( "GEN_NS_END\n" );
header.print_fmt( roll_own_dependencies_guard_end );
}
Code types = scan_file( project_dir "components/gen.types.hpp" );
Code data_structs = scan_file( project_dir "components/gen.data_structures.hpp" );
Code interface = scan_file( project_dir "components/gen.interface.hpp" );
Code header_end = scan_file( project_dir "components/gen.header_end.hpp" );
header.print_fmt( "GEN_NS_BEGIN\n\n" );
header.print( types );
header.print( data_structs );
header.print( interface );
header.print( header_end );
header.print_fmt( "GEN_NS_END\n" );
}
// Implementation
{
header.print_fmt( "%s\n", (char const*) implementation_guard_start );
{
header.print_fmt( roll_own_dependencies_guard_start );
gen_header.print_fmt( "%s\n\n", (char const*) gen_implementation_guard );
gen_header.print_fmt( "GEN_NS_BEGIN\n");
Code impl_start = scan_file( project_dir "dependencies/gen.impl_start.cpp" );
Code debug = scan_file( project_dir "dependencies/gen.debug.cpp" );
Code string_ops = scan_file( project_dir "dependencies/gen.string_ops.cpp" );
Code printing = scan_file( project_dir "dependencies/gen.printing.cpp" );
Code memory = scan_file( project_dir "dependencies/gen.memory.cpp" );
Code parsing = scan_file( project_dir "dependencies/gen.parsing.cpp" );
Code hashing = scan_file( project_dir "dependencies/gen.hashing.cpp" );
Code string = scan_file( project_dir "dependencies/gen.string.cpp" );
Code timing = scan_file( project_dir "dependencies/gen.timing.cpp" );
gen_header.print_fmt( "\nGEN_NS_END\n");
gen_header.print_fmt( "%s\n", (char const*) gen_implementation_end );
header.print_fmt( "GEN_NS_BEGIN\n\n");
header.print( impl_start );
header.print( debug );
header.print( string_ops );
header.print( printing );
header.print( memory );
header.print( parsing );
header.print( hashing );
header.print( string );
header.print( timing );
header.print_fmt( "GEN_NS_END\n");
gen_header.print( pop_ignores );
gen_header.write();
header.print_fmt( roll_own_dependencies_guard_end );
}
Code data = scan_file( project_dir "components/gen.data.cpp" );
Code ast_case_macros = scan_file( project_dir "components/gen.ast_case_macros.cpp" );
Code ast = scan_file( project_dir "components/gen.ast.cpp" );
Code interface = scan_file( project_dir "components/gen.interface.cpp" );
Code upfront = scan_file( project_dir "components/gen.interface.upfront.cpp" );
Code parsing = scan_file( project_dir "components/gen.interface.parsing.cpp" );
Code untyped = scan_file( project_dir "components/gen.untyped.cpp" );
header.print_fmt( "GEN_NS_BEGIN\n\n");
header.print( data );
header.print( ast_case_macros );
header.print( ast );
header.print( interface );
header.print( upfront );
header.print( parsing );
header.print( untyped );
header.print_fmt( "GEN_NS_END\n");
header.print_fmt( "%s\n", (char const*) implementation_guard_end );
}
header.print( pop_ignores );
header.write();
gen::deinit();
return 0;