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Diffstat (limited to 'Source/ThirdParty/ANGLE/src/compiler/preprocessor/new/pp.y')
| -rw-r--r-- | Source/ThirdParty/ANGLE/src/compiler/preprocessor/new/pp.y | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/Source/ThirdParty/ANGLE/src/compiler/preprocessor/new/pp.y b/Source/ThirdParty/ANGLE/src/compiler/preprocessor/new/pp.y new file mode 100644 index 0000000..55193ab --- /dev/null +++ b/Source/ThirdParty/ANGLE/src/compiler/preprocessor/new/pp.y @@ -0,0 +1,225 @@ +/* +// +// Copyright (c) 2011 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +This file contains the Yacc grammar for GLSL ES preprocessor. +Based on Microsoft Visual Studio 2010 Preprocessor Grammar: +http://msdn.microsoft.com/en-us/library/2scxys89.aspx + +IF YOU MODIFY THIS FILE YOU ALSO NEED TO RUN generate_glsl_parser.sh, +WHICH GENERATES THE GLSL ES PARSER. +*/ + +%{ +// +// Copyright (c) 2011 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// This file is auto-generated by generate_glslang_parser.sh. DO NOT EDIT! + +#include "Context.h" + +#define YYLEX_PARAM context->lexer() +#define YYDEBUG 1 +%} + +%pure-parser +%name-prefix="pp" +%locations +%parse-param {pp::Context* context} + +%union { + int ival; + std::string* sval; + pp::Token* tval; + pp::TokenVector* tlist; +} + +%{ +extern int yylex(YYSTYPE* lvalp, YYLTYPE* llocp, void* lexer); +static void yyerror(YYLTYPE* llocp, + pp::Context* context, + const char* reason); + +static void pushConditionalBlock(pp::Context* context, bool condition); +static void popConditionalBlock(pp::Context* context); +%} + +%token HASH HASH_UNDEF +%token HASH_IF HASH_IFDEF HASH_IFNDEF HASH_ELSE HASH_ELIF HASH_ENDIF DEFINED +%token HASH_ERROR HASH_PRAGMA HASH_EXTENSION HASH_VERSION HASH_LINE +%token <sval> HASH_DEFINE_OBJ HASH_DEFINE_FUNC +%token <sval> INT_CONSTANT FLOAT_CONSTANT IDENTIFIER +%type <ival> operator +%type <tval> conditional_token token +%type <tlist> parameter_list replacement_list conditional_list token_list +%% + +input + : /* empty */ + | input line +; + +line + : text_line + | control_line +; + +text_line + : '\n' + | token_list '\n' { + // TODO(alokp): Expand macros. + pp::TokenVector* out = context->output(); + out->insert(out->end(), $1->begin(), $1->end()); + delete $1; + } +; + +control_line + : HASH '\n' + | HASH_DEFINE_OBJ replacement_list '\n' { + context->defineMacro(@1.first_line, pp::Macro::kTypeObj, $1, NULL, $2); + } + | HASH_DEFINE_FUNC '(' parameter_list ')' replacement_list '\n' { + context->defineMacro(@1.first_line, pp::Macro::kTypeFunc, $1, $3, $5); + } + | HASH_UNDEF IDENTIFIER '\n' { + context->undefineMacro($2); + } + | HASH_IF conditional_list '\n' { + pushConditionalBlock(context, $2 ? true : false); + } + | HASH_IFDEF IDENTIFIER '\n' { + pushConditionalBlock(context, context->isMacroDefined($2)); + } + | HASH_IFNDEF IDENTIFIER '\n' { + pushConditionalBlock(context, !context->isMacroDefined($2)); + } + | HASH_ELIF conditional_list '\n' { + } + | HASH_ELSE '\n' { + } + | HASH_ENDIF '\n' { + popConditionalBlock(context); + } + | HASH_ERROR '\n' + | HASH_PRAGMA '\n' + | HASH_EXTENSION '\n' + | HASH_VERSION '\n' + | HASH_LINE '\n' +; + +replacement_list + : /* empty */ { $$ = NULL; } + | token_list + +parameter_list + : /* empty */ { $$ = NULL; } + | IDENTIFIER { + $$ = new pp::TokenVector; + $$->push_back(new pp::Token(@1.first_line, IDENTIFIER, $1)); + } + | parameter_list ',' IDENTIFIER { + $$ = $1; + $$->push_back(new pp::Token(@3.first_line, IDENTIFIER, $3)); + } + +conditional_list + : conditional_token { + $$ = new pp::TokenVector; + $$->push_back($1); + } + | conditional_list conditional_token { + $$ = $1; + $$->push_back($2); + } +; + +token_list + : token { + $$ = new pp::TokenVector; + $$->push_back($1); + } + | token_list token { + $$ = $1; + $$->push_back($2); + } +; + +conditional_token + : DEFINED IDENTIFIER { + } + | DEFINED '(' IDENTIFIER ')' { + } + | token +; + +token + : operator { + $$ = new pp::Token(@1.first_line, $1, NULL); + } + | INT_CONSTANT { + $$ = new pp::Token(@1.first_line, INT_CONSTANT, $1); + } + | FLOAT_CONSTANT { + $$ = new pp::Token(@1.first_line, FLOAT_CONSTANT, $1); + } + | IDENTIFIER { + $$ = new pp::Token(@1.first_line, IDENTIFIER, $1); + } +; + +operator + : '[' { $$ = '['; } + | ']' { $$ = ']'; } + | '<' { $$ = '<'; } + | '>' { $$ = '>'; } + | '(' { $$ = '('; } + | ')' { $$ = ')'; } + | '{' { $$ = '{'; } + | '}' { $$ = '}'; } + | '.' { $$ = '.'; } + | '+' { $$ = '+'; } + | '-' { $$ = '-'; } + | '/' { $$ = '/'; } + | '*' { $$ = '*'; } + | '%' { $$ = '%'; } + | '^' { $$ = '^'; } + | '|' { $$ = '|'; } + | '&' { $$ = '&'; } + | '~' { $$ = '~'; } + | '=' { $$ = '='; } + | '!' { $$ = '!'; } + | ':' { $$ = ':'; } + | ';' { $$ = ';'; } + | ',' { $$ = ','; } + | '?' { $$ = '?'; } +; + +%% + +void yyerror(YYLTYPE* llocp, pp::Context* context, const char* reason) +{ +} + +void pushConditionalBlock(pp::Context* context, bool condition) +{ +} + +void popConditionalBlock(pp::Context* context) +{ +} + +namespace pp { +bool Context::parse() +{ + yydebug = 1; + return yyparse(this) == 0 ? true : false; +} +} // namespace pp + |