mirror of
https://github.com/Ed94/gencpp.git
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321 lines
11 KiB
C++
321 lines
11 KiB
C++
#ifdef GEN_INTELLISENSE_DIRECTIVES
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#pragma once
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#include "ast_types.hpp"
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#endif
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#pragma region Gen Interface
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// Initialize the library.
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// This currently just initializes the CodePool.
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void init();
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// Currently manually free's the arenas, code for checking for leaks.
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// However on Windows at least, it doesn't need to occur as the OS will clean up after the process.
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void deinit();
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// Clears the allocations, but doesn't return to the heap, the calls init() again.
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// Ease of use.
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void reset();
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// Used internally to retrive or make string allocations.
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// Strings are stored in a series of string arenas of fixed size (SizePer_StringArena)
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StringCached get_cached_string( StrC str );
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/*
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This provides a fresh Code AST.
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The gen interface use this as their method from getting a new AST object from the CodePool.
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Use this if you want to make your own API for formatting the supported Code Types.
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*/
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Code make_code();
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// Set these before calling gen's init() procedure.
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void set_allocator_data_arrays ( AllocatorInfo data_array_allocator );
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void set_allocator_code_pool ( AllocatorInfo pool_allocator );
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void set_allocator_lexer ( AllocatorInfo lex_allocator );
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void set_allocator_string_arena( AllocatorInfo string_allocator );
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void set_allocator_string_table( AllocatorInfo string_allocator );
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void set_allocator_type_table ( AllocatorInfo type_reg_allocator );
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#pragma region Upfront
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CodeAttributes def_attributes( StrC content );
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CodeComment def_comment ( StrC content );
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struct Opts_def_struct {
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Code body;
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CodeTypename parent;
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AccessSpec parent_access;
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CodeAttributes attributes;
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ModuleFlag mflags;
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CodeTypename* interfaces;
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s32 num_interfaces;
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};
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CodeClass def_class( StrC name, Opts_def_struct otps GEN_PARAM_DEFAULT );
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struct Opts_def_constructor {
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CodeParam params;
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Code initializer_list;
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Code body;
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};
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CodeConstructor def_constructor( Opts_def_constructor opts GEN_PARAM_DEFAULT );
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CodeDefine def_define( StrC name, StrC content );
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struct Opts_def_destructor {
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Code body;
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CodeSpecifiers specifiers;
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};
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CodeDestructor def_destructor( Opts_def_destructor opts GEN_PARAM_DEFAULT );
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struct Opts_def_enum {
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Code body;
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CodeTypename type;
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EnumT specifier;
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CodeAttributes attributes;
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ModuleFlag mflags;
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};
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CodeEnum def_enum( StrC name, Opts_def_enum opts GEN_PARAM_DEFAULT );
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CodeExec def_execution ( StrC content );
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CodeExtern def_extern_link( StrC name, Code body );
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CodeFriend def_friend ( Code symbol );
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struct Opts_def_function {
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CodeParam params;
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CodeTypename ret_type;
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Code body;
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CodeSpecifiers specs;
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CodeAttributes attrs;
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ModuleFlag mflags;
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};
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CodeFn def_function( StrC name, Opts_def_function opts GEN_PARAM_DEFAULT );
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struct Opts_def_include { b32 foreign; };
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struct Opts_def_module { ModuleFlag mflags; };
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struct Opts_def_namespace { ModuleFlag mflags; };
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CodeInclude def_include ( StrC content, Opts_def_include opts GEN_PARAM_DEFAULT );
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CodeModule def_module ( StrC name, Opts_def_module opts GEN_PARAM_DEFAULT );
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CodeNS def_namespace( StrC name, Code body, Opts_def_namespace opts GEN_PARAM_DEFAULT );
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struct Opts_def_operator {
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CodeParam params;
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CodeTypename ret_type;
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Code body;
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CodeSpecifiers specifiers;
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CodeAttributes attributes;
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ModuleFlag mflags;
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};
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CodeOperator def_operator( Operator op, StrC nspace, Opts_def_operator opts GEN_PARAM_DEFAULT );
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struct Opts_def_operator_cast {
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Code body;
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CodeSpecifiers specs;
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};
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CodeOpCast def_operator_cast( CodeTypename type, Opts_def_operator_cast opts GEN_PARAM_DEFAULT );
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struct Opts_def_param { Code value; };
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CodeParam def_param ( CodeTypename type, StrC name, Opts_def_param opts GEN_PARAM_DEFAULT );
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CodePragma def_pragma( StrC directive );
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CodePreprocessCond def_preprocess_cond( EPreprocessCond type, StrC content );
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CodeSpecifiers def_specifier( Specifier specifier );
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CodeStruct def_struct( StrC name, Opts_def_struct opts GEN_PARAM_DEFAULT );
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struct Opts_def_template { ModuleFlag mflags; };
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CodeTemplate def_template( CodeParam params, Code definition, Opts_def_template opts GEN_PARAM_DEFAULT );
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struct Opts_def_type {
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Code arrayexpr;
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CodeSpecifiers specifiers;
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CodeAttributes attributes;
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};
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CodeTypename def_type( StrC name, Opts_def_type opts GEN_PARAM_DEFAULT );
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struct Opts_def_typedef {
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CodeAttributes attributes;
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ModuleFlag mflags;
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};
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CodeTypedef def_typedef( StrC name, Code type, Opts_def_typedef opts GEN_PARAM_DEFAULT );
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struct Opts_def_union {
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CodeAttributes attributes;
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ModuleFlag mflags;
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};
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CodeUnion def_union( StrC name, Code body, Opts_def_union opts GEN_PARAM_DEFAULT );
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struct Opts_def_using {
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CodeAttributes attributes;
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ModuleFlag mflags;
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};
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CodeUsing def_using( StrC name, Code type, Opts_def_using opts GEN_PARAM_DEFAULT );
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CodeUsing def_using_namespace( StrC name );
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struct Opts_def_variable
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{
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Code value;
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CodeSpecifiers specifiers;
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CodeAttributes attributes;
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ModuleFlag mflags;
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};
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CodeVar def_variable( CodeTypename type, StrC name, Opts_def_variable opts GEN_PARAM_DEFAULT );
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// Constructs an empty body. Use AST::validate_body() to check if the body is was has valid entries.
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CodeBody def_body( CodeTypename type );
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// There are two options for defining a struct body, either varadically provided with the args macro to auto-deduce the arg num,
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/// or provide as an array of Code objects.
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CodeBody def_class_body ( s32 num, ... );
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CodeBody def_class_body ( s32 num, Code* codes );
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CodeBody def_enum_body ( s32 num, ... );
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CodeBody def_enum_body ( s32 num, Code* codes );
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CodeBody def_export_body ( s32 num, ... );
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CodeBody def_export_body ( s32 num, Code* codes);
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CodeBody def_extern_link_body( s32 num, ... );
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CodeBody def_extern_link_body( s32 num, Code* codes );
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CodeBody def_function_body ( s32 num, ... );
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CodeBody def_function_body ( s32 num, Code* codes );
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CodeBody def_global_body ( s32 num, ... );
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CodeBody def_global_body ( s32 num, Code* codes );
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CodeBody def_namespace_body ( s32 num, ... );
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CodeBody def_namespace_body ( s32 num, Code* codes );
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CodeParam def_params ( s32 num, ... );
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CodeParam def_params ( s32 num, CodeParam* params );
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CodeSpecifiers def_specifiers ( s32 num, ... );
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CodeSpecifiers def_specifiers ( s32 num, Specifier* specs );
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CodeBody def_struct_body ( s32 num, ... );
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CodeBody def_struct_body ( s32 num, Code* codes );
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CodeBody def_union_body ( s32 num, ... );
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CodeBody def_union_body ( s32 num, Code* codes );
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#pragma endregion Upfront
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#pragma region Parsing
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// TODO(Ed) : Implmeent the new parser API design.
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#if 0
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namespace parser {
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struct StackNode
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{
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StackNode* Prev;
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Token Start;
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Token Name; // The name of the AST node (if parsed)
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StrC FailedProc; // The name of the procedure that failed
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};
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// Stack nodes are allocated the error's allocator
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struct Error
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{
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String message;
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StackNode* context_stack;
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};
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}
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struct ParseInfo
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{
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Arena FileMem;
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Arena TokMem;
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Arena CodeMem;
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FileContents FileContent;
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Array<parser::Token> Tokens;
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Array<parser::Error> Errors;
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// Errors are allocated to a dedicated general arena.
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};
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CodeBody parse_file( StrC path );
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#endif
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CodeClass parse_class ( StrC class_def );
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CodeConstructor parse_constructor ( StrC constructor_def );
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CodeDestructor parse_destructor ( StrC destructor_def );
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CodeEnum parse_enum ( StrC enum_def );
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CodeBody parse_export_body ( StrC export_def );
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CodeExtern parse_extern_link ( StrC exten_link_def );
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CodeFriend parse_friend ( StrC friend_def );
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CodeFn parse_function ( StrC fn_def );
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CodeBody parse_global_body ( StrC body_def );
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CodeNS parse_namespace ( StrC namespace_def );
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CodeOperator parse_operator ( StrC operator_def );
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CodeOpCast parse_operator_cast( StrC operator_def );
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CodeStruct parse_struct ( StrC struct_def );
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CodeTemplate parse_template ( StrC template_def );
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CodeTypename parse_type ( StrC type_def );
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CodeTypedef parse_typedef ( StrC typedef_def );
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CodeUnion parse_union ( StrC union_def );
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CodeUsing parse_using ( StrC using_def );
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CodeVar parse_variable ( StrC var_def );
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#pragma endregion Parsing
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#pragma region Untyped text
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ssize token_fmt_va( char* buf, usize buf_size, s32 num_tokens, va_list va );
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//! Do not use directly. Use the token_fmt macro instead.
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StrC token_fmt_impl( ssize, ... );
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Code untyped_str ( StrC content);
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Code untyped_fmt ( char const* fmt, ... );
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Code untyped_token_fmt( char const* fmt, s32 num_tokens, ... );
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#pragma endregion Untyped text
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#pragma region Macros
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#ifndef token_fmt
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# define gen_main main
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# define __ NullCode
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// Convienence for defining any name used with the gen api.
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// Lets you provide the length and string literal to the functions without the need for the DSL.
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# define name( Id_ ) { sizeof(stringize( Id_ )) - 1, stringize(Id_) }
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// Same as name just used to indicate intention of literal for code instead of names.
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# define code( ... ) { sizeof(stringize(__VA_ARGS__)) - 1, stringize( __VA_ARGS__ ) }
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// Provides the number of arguments while passing args inplace.
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# define args( ... ) num_args( __VA_ARGS__ ), __VA_ARGS__
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// Just wrappers over common untyped code definition constructions.
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# define code_str( ... ) GEN_NS untyped_str( code( __VA_ARGS__ ) )
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# define code_fmt( ... ) GEN_NS untyped_str( token_fmt( __VA_ARGS__ ) )
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# define parse_fmt( type, ... ) GEN_NS parse_##type( token_fmt( __VA_ARGS__ ) )
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/*
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Takes a format string (char const*) and a list of tokens (StrC) and returns a StrC of the formatted string.
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Tokens are provided in '<'identifier'>' format where '<' '>' are just angle brakcets (you can change it in token_fmt_va)
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---------------------------------------------------------
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Example - A string with:
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typedef <type> <name> <name>;
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Will have a token_fmt arguments populated with:
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"type", strc_for_type,
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"name", strc_for_name,
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and:
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stringize( typedef <type> <name> <name>; ) )
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-----------------------------------------------------------
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So the full call for this example would be:
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token_fmt(
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"type", strc_for_type
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, "name", strc_for_name
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, stringize(
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typedef <type> <name> <name>
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));
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!----------------------------------------------------------
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! Note: token_fmt_va is whitespace sensitive for the tokens.
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! This can be alleviated by skipping whitespace between brackets but it was choosen to not have that implementation by default.
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*/
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# define token_fmt( ... ) GEN_NS token_fmt_impl( (num_args( __VA_ARGS__ ) + 1) / 2, __VA_ARGS__ )
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#endif
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#pragma endregion Macros
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#pragma endregion Gen Interface
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