mirror of
https://github.com/Ed94/gencpp.git
synced 2025-11-03 23:36:12 -08:00
458 lines
16 KiB
C++
458 lines
16 KiB
C++
#ifdef INTELLISENSE_DIRECTIVES
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#pragma once
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#include "parser_types.hpp"
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#endif
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/*
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______ ______ ________ __ __ ______ __
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/ \ / \| \ | \ | \ / \ | \
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| ▓▓▓▓▓▓\ ▓▓▓▓▓▓\\▓▓▓▓▓▓▓▓ | ▓▓\ | ▓▓ | ▓▓▓▓▓▓\ ______ ____| ▓▓ ______
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| ▓▓__| ▓▓ ▓▓___\▓▓ | ▓▓ | ▓▓▓\| ▓▓ | ▓▓ \▓▓/ \ / ▓▓/ \
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| ▓▓ ▓▓\▓▓ \ | ▓▓ | ▓▓▓▓\ ▓▓ | ▓▓ | ▓▓▓▓▓▓\ ▓▓▓▓▓▓▓ ▓▓▓▓▓▓\
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| ▓▓▓▓▓▓▓▓_\▓▓▓▓▓▓\ | ▓▓ | ▓▓\▓▓ ▓▓ | ▓▓ __| ▓▓ | ▓▓ ▓▓ | ▓▓ ▓▓ ▓▓
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| ▓▓ | ▓▓ \__| ▓▓ | ▓▓ | ▓▓ \▓▓▓▓ | ▓▓__/ \ ▓▓__/ ▓▓ ▓▓__| ▓▓ ▓▓▓▓▓▓▓▓
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| ▓▓ | ▓▓\▓▓ ▓▓ | ▓▓ | ▓▓ \▓▓▓ \▓▓ ▓▓\▓▓ ▓▓\▓▓ ▓▓\▓▓ \
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\▓▓ \▓▓ \▓▓▓▓▓▓ \▓▓ \▓▓ \▓▓ \▓▓▓▓▓▓ \▓▓▓▓▓▓ \▓▓▓▓▓▓▓ \▓▓▓▓▓▓▓
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*/
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struct AST;
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struct AST_Body;
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struct AST_Attributes;
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struct AST_Comment;
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struct AST_Constructor;
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// struct AST_BaseClass;
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struct AST_Class;
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struct AST_Define;
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struct AST_DefineParams;
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struct AST_Destructor;
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struct AST_Enum;
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struct AST_Exec;
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struct AST_Extern;
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struct AST_Include;
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struct AST_Friend;
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struct AST_Fn;
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struct AST_Module;
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struct AST_NS;
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struct AST_Operator;
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struct AST_OpCast;
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struct AST_Params;
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struct AST_Pragma;
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struct AST_PreprocessCond;
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struct AST_Specifiers;
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#ifdef GEN_EXECUTION_EXPRESSION_SUPPORT
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struct AST_Expr;
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struct AST_Expr_Assign;
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struct AST_Expr_Alignof;
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struct AST_Expr_Binary;
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struct AST_Expr_CStyleCast;
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struct AST_Expr_FunctionalCast;
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struct AST_Expr_CppCast;
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struct AST_Expr_ProcCall;
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struct AST_Expr_Decltype;
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struct AST_Expr_Comma; // TODO(Ed) : This is a binary op not sure if it needs its own AST...
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struct AST_Expr_AMS; // Access Member Symbol
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struct AST_Expr_Sizeof;
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struct AST_Expr_Subscript;
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struct AST_Expr_Ternary;
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struct AST_Expr_UnaryPrefix;
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struct AST_Expr_UnaryPostfix;
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struct AST_Expr_Element;
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struct AST_Stmt;
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struct AST_Stmt_Break;
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struct AST_Stmt_Case;
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struct AST_Stmt_Continue;
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struct AST_Stmt_Decl;
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struct AST_Stmt_Do;
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struct AST_Stmt_Expr; // TODO(Ed) : Is this distinction needed? (Should it be a flag instead?)
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struct AST_Stmt_Else;
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struct AST_Stmt_If;
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struct AST_Stmt_For;
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struct AST_Stmt_Goto;
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struct AST_Stmt_Label;
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struct AST_Stmt_Switch;
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struct AST_Stmt_While;
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#endif
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struct AST_Struct;
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struct AST_Template;
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struct AST_Typename;
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struct AST_Typedef;
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struct AST_Union;
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struct AST_Using;
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struct AST_Var;
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#if GEN_COMPILER_C
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typedef AST* Code;
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#else
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struct Code;
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#endif
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#if GEN_COMPILER_C
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typedef AST_Body* CodeBody;
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typedef AST_Attributes* CodeAttributes;
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typedef AST_Comment* CodeComment;
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typedef AST_Class* CodeClass;
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typedef AST_Constructor* CodeConstructor;
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typedef AST_Define* CodeDefine;
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typedef AST_DefineParams* CodeDefineParams;
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typedef AST_Destructor* CodeDestructor;
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typedef AST_Enum* CodeEnum;
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typedef AST_Exec* CodeExec;
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typedef AST_Extern* CodeExtern;
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typedef AST_Include* CodeInclude;
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typedef AST_Friend* CodeFriend;
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typedef AST_Fn* CodeFn;
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typedef AST_Module* CodeModule;
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typedef AST_NS* CodeNS;
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typedef AST_Operator* CodeOperator;
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typedef AST_OpCast* CodeOpCast;
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typedef AST_Params* CodeParams;
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typedef AST_PreprocessCond* CodePreprocessCond;
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typedef AST_Pragma* CodePragma;
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typedef AST_Specifiers* CodeSpecifiers;
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#else
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struct CodeBody;
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struct CodeAttributes;
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struct CodeComment;
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struct CodeClass;
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struct CodeConstructor;
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struct CodeDefine;
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struct CodeDefineParams;
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struct CodeDestructor;
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struct CodeEnum;
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struct CodeExec;
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struct CodeExtern;
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struct CodeInclude;
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struct CodeFriend;
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struct CodeFn;
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struct CodeModule;
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struct CodeNS;
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struct CodeOperator;
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struct CodeOpCast;
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struct CodeParams;
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struct CodePreprocessCond;
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struct CodePragma;
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struct CodeSpecifiers;
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#endif
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#ifdef GEN_EXECUTION_EXPRESSION_SUPPORT
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#if GEN_COMPILER_C
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typedef AST_Expr* CodeExpr;
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typedef AST_Expr_Assign* CodeExpr_Assign;
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typedef AST_Expr_Alignof* CodeExpr_Alignof;
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typedef AST_Expr_Binary* CodeExpr_Binary;
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typedef AST_Expr_CStyleCast* CodeExpr_CStyleCast;
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typedef AST_Expr_FunctionalCast* CodeExpr_FunctionalCast;
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typedef AST_Expr_CppCast* CodeExpr_CppCast;
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typedef AST_Expr_Element* CodeExpr_Element;
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typedef AST_Expr_ProcCall* CodeExpr_ProcCall;
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typedef AST_Expr_Decltype* CodeExpr_Decltype;
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typedef AST_Expr_Comma* CodeExpr_Comma;
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typedef AST_Expr_AMS* CodeExpr_AMS; // Access Member Symbol
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typedef AST_Expr_Sizeof* CodeExpr_Sizeof;
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typedef AST_Expr_Subscript* CodeExpr_Subscript;
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typedef AST_Expr_Ternary* CodeExpr_Ternary;
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typedef AST_Expr_UnaryPrefix* CodeExpr_UnaryPrefix;
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typedef AST_Expr_UnaryPostfix* CodeExpr_UnaryPostfix;
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#else
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struct CodeExpr;
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struct CodeExpr_Assign;
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struct CodeExpr_Alignof;
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struct CodeExpr_Binary;
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struct CodeExpr_CStyleCast;
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struct CodeExpr_FunctionalCast;
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struct CodeExpr_CppCast;
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struct CodeExpr_Element;
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struct CodeExpr_ProcCall;
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struct CodeExpr_Decltype;
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struct CodeExpr_Comma;
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struct CodeExpr_AMS; // Access Member Symbol
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struct CodeExpr_Sizeof;
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struct CodeExpr_Subscript;
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struct CodeExpr_Ternary;
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struct CodeExpr_UnaryPrefix;
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struct CodeExpr_UnaryPostfix;
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#endif
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#if GEN_COMPILER_C
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typedef AST_Stmt* CodeStmt;
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typedef AST_Stmt_Break* CodeStmt_Break;
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typedef AST_Stmt_Case* CodeStmt_Case;
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typedef AST_Stmt_Continue* CodeStmt_Continue;
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typedef AST_Stmt_Decl* CodeStmt_Decl;
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typedef AST_Stmt_Do* CodeStmt_Do;
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typedef AST_Stmt_Expr* CodeStmt_Expr;
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typedef AST_Stmt_Else* CodeStmt_Else;
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typedef AST_Stmt_If* CodeStmt_If;
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typedef AST_Stmt_For* CodeStmt_For;
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typedef AST_Stmt_Goto* CodeStmt_Goto;
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typedef AST_Stmt_Label* CodeStmt_Label;
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typedef AST_Stmt_Lambda* CodeStmt_Lambda;
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typedef AST_Stmt_Switch* CodeStmt_Switch;
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typedef AST_Stmt_While* CodeStmt_While;
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#else
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struct CodeStmt;
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struct CodeStmt_Break;
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struct CodeStmt_Case;
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struct CodeStmt_Continue;
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struct CodeStmt_Decl;
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struct CodeStmt_Do;
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struct CodeStmt_Expr;
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struct CodeStmt_Else;
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struct CodeStmt_If;
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struct CodeStmt_For;
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struct CodeStmt_Goto;
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struct CodeStmt_Label;
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struct CodeStmt_Lambda;
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struct CodeStmt_Switch;
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struct CodeStmt_While;
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#endif
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// GEN_EXECUTION_EXPRESSION_SUPPORT
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#endif
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#if GEN_COMPILER_C
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typedef AST_Struct* CodeStruct;
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typedef AST_Template* CodeTemplate;
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typedef AST_Typename* CodeTypename;
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typedef AST_Typedef* CodeTypedef;
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typedef AST_Union* CodeUnion;
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typedef AST_Using* CodeUsing;
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typedef AST_Var* CodeVar;
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#else
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struct CodeStruct;
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struct CodeTemplate;
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struct CodeTypename;
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struct CodeTypedef;
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struct CodeUnion;
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struct CodeUsing;
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struct CodeVar;
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#endif
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#if GEN_COMPILER_CPP
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template< class Type> forceinline Type tmpl_cast( Code self ) { return * rcast( Type*, & self ); }
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#endif
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#pragma region Code C-Interface
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void code_append (Code code, Code other );
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GEN_API Str code_debug_str (Code code);
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GEN_API Code code_duplicate (Code code);
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Code* code_entry (Code code, u32 idx );
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bool code_has_entries (Code code);
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bool code_is_body (Code code);
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GEN_API bool code_is_equal (Code code, Code other);
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bool code_is_valid (Code code);
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void code_set_global (Code code);
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GEN_API StrBuilder code_to_strbuilder (Code self );
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GEN_API void code_to_strbuilder_ref(Code self, StrBuilder* result );
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Str code_type_str (Code self );
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GEN_API bool code_validate_body (Code self );
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#pragma endregion Code C-Interface
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#if GEN_COMPILER_CPP
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/*
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AST* wrapper
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- Not constantly have to append the '*' as this is written often..
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- Allows for implicit conversion to any of the ASTs (raw or filtered).
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*/
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struct Code
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{
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AST* ast;
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# define Using_Code( Typename ) \
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forceinline Str debug_str() { return code_debug_str(* this); } \
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forceinline Code duplicate() { return code_duplicate(* this); } \
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forceinline bool is_equal( Code other ) { return code_is_equal(* this, other); } \
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forceinline bool is_body() { return code_is_body(* this); } \
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forceinline bool is_valid() { return code_is_valid(* this); } \
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forceinline void set_global() { return code_set_global(* this); }
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# define Using_CodeOps( Typename ) \
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forceinline Typename& operator = ( Code other ); \
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forceinline bool operator ==( Code other ) { return (AST*)ast == other.ast; } \
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forceinline bool operator !=( Code other ) { return (AST*)ast != other.ast; } \
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forceinline bool operator ==(std::nullptr_t) const { return ast == nullptr; } \
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forceinline bool operator !=(std::nullptr_t) const { return ast != nullptr; } \
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operator bool();
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#if ! GEN_C_LIKE_CPP
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Using_Code( Code );
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forceinline void append(Code other) { return code_append(* this, other); }
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forceinline Code* entry(u32 idx) { return code_entry(* this, idx); }
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forceinline bool has_entries() { return code_has_entries(* this); }
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forceinline StrBuilder to_strbuilder() { return code_to_strbuilder(* this); }
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forceinline void to_strbuilder(StrBuilder& result) { return code_to_strbuilder_ref(* this, & result); }
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forceinline Str type_str() { return code_type_str(* this); }
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forceinline bool validate_body() { return code_validate_body(*this); }
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#endif
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Using_CodeOps( Code );
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forceinline Code operator *() { return * this; } // Required to support for-range iteration.
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forceinline AST* operator ->() { return ast; }
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Code& operator ++();
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#ifdef GEN_ENFORCE_STRONG_CODE_TYPES
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# define operator explicit operator
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#endif
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operator CodeBody() const;
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operator CodeAttributes() const;
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// operator CodeBaseClass() const;
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operator CodeComment() const;
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operator CodeClass() const;
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operator CodeConstructor() const;
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operator CodeDefine() const;
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operator CodeDefineParams() const;
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operator CodeDestructor() const;
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operator CodeExec() const;
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operator CodeEnum() const;
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operator CodeExtern() const;
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operator CodeInclude() const;
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operator CodeFriend() const;
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operator CodeFn() const;
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operator CodeModule() const;
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operator CodeNS() const;
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operator CodeOperator() const;
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operator CodeOpCast() const;
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operator CodeParams() const;
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operator CodePragma() const;
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operator CodePreprocessCond() const;
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operator CodeSpecifiers() const;
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operator CodeStruct() const;
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operator CodeTemplate() const;
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operator CodeTypename() const;
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operator CodeTypedef() const;
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operator CodeUnion() const;
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operator CodeUsing() const;
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operator CodeVar() const;
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#undef operator
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};
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#endif
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#pragma region Statics
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// Used to identify ASTs that should always be duplicated. (Global constant ASTs)
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GEN_API extern Code Code_Global;
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// Used to identify invalid generated code.
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GEN_API extern Code Code_Invalid;
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#pragma endregion Statics
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struct Code_POD
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{
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AST* ast;
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};
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static_assert( sizeof(Code) == sizeof(Code_POD), "ERROR: Code is not POD" );
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// Desired width of the AST data structure.
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constexpr int const AST_POD_Size = 128;
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constexpr static
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int AST_ArrSpecs_Cap =
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(
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AST_POD_Size
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- sizeof(Code)
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- sizeof(StrCached)
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- sizeof(Code) * 2
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- sizeof(Token*)
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- sizeof(Code)
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- sizeof(CodeType)
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- sizeof(ModuleFlag)
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- sizeof(u32)
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)
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/ sizeof(Specifier) - 1;
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/*
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Simple AST POD with functionality to seralize into C++ syntax.
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TODO(Ed): Eventually haven't a transparent AST like this will longer be viable once statements & expressions are in (most likely....)
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*/
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struct AST
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{
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union {
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struct
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{
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Code InlineCmt; // Class, Constructor, Destructor, Enum, Friend, Functon, Operator, OpCast, Struct, Typedef, Using, Variable
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Code Attributes; // Class, Enum, Function, Struct, Typedef, Union, Using, Variable // TODO(Ed): Parameters can have attributes
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Code Specs; // Class, Destructor, Function, Operator, Struct, Typename, Variable
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union {
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Code InitializerList; // Constructor
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Code ParentType; // Class, Struct, ParentType->Next has a possible list of interfaces.
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Code ReturnType; // Function, Operator, Typename
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Code UnderlyingType; // Enum, Typedef
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Code ValueType; // Parameter, Variable
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};
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union {
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Code Macro; // Parameter
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Code BitfieldSize; // Variable (Class/Struct Data Member)
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Code Params; // Constructor, Define, Function, Operator, Template, Typename
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Code UnderlyingTypeMacro; // Enum
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};
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union {
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Code ArrExpr; // Typename
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Code Body; // Class, Constructor, Define, Destructor, Enum, Friend, Function, Namespace, Struct, Union
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Code Declaration; // Friend, Template
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Code Value; // Parameter, Variable
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};
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union {
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Code NextVar; // Variable
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Code SuffixSpecs; // Typename, Function (Thanks Unreal)
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Code PostNameMacro; // Only used with parameters for specifically UE_REQUIRES (Thanks Unreal)
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};
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};
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StrCached Content; // Attributes, Comment, Execution, Include
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TokenSlice ContentToks; // TODO(Ed): Use a token slice for content
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struct {
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Specifier ArrSpecs[AST_ArrSpecs_Cap]; // Specifiers
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Code NextSpecs; // Specifiers; If ArrSpecs is full, then NextSpecs is used.
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};
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};
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StrCached Name;
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union {
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Code Prev;
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Code Front;
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Code Last;
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};
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union {
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Code Next;
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Code Back;
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};
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Token* Token; // Reference to starting token, only available if it was derived from parsing. // TODO(Ed): Change this to a token slice.
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Code Parent;
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CodeType Type;
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// CodeFlag CodeFlags;
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ModuleFlag ModuleFlags;
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union {
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b32 IsFunction; // Used by typedef to not serialize the name field.
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struct {
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b16 IsParamPack; // Used by typename to know if type should be considered a parameter pack.
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ETypenameTag TypeTag; // Used by typename to keep track of explicitly declared tags for the identifier (enum, struct, union)
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};
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Operator Op;
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AccessSpec ParentAccess;
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s32 NumEntries;
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s32 VarParenthesizedInit; // Used by variables to know that initialization is using a constructor expression instead of an assignment expression.
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};
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};
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static_assert( sizeof(AST) == AST_POD_Size, "ERROR: AST is not size of AST_POD_Size" );
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#if GEN_COMPILER_CPP
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// Uses an implicitly overloaded cast from the AST to the desired code type.
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// Necessary if the user wants GEN_ENFORCE_STRONG_CODE_TYPES
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struct InvalidCode_ImplictCaster;
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#define InvalidCode (InvalidCode_ImplictCaster{})
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#else
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#define InvalidCode (void*){ (void*)Code_Invalid }
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#endif
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#if GEN_COMPILER_CPP
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struct NullCode_ImplicitCaster;
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// Used when the its desired when omission is allowed in a definition.
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#define NullCode (NullCode_ImplicitCaster{})
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#else
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#define NullCode nullptr
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#endif
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