| // |
| // Copyright (c) 2012 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. |
| // |
| |
| #ifndef COMPILER_PREPROCESSOR_DIRECTIVEPARSER_H_ |
| #define COMPILER_PREPROCESSOR_DIRECTIVEPARSER_H_ |
| |
| #include "compiler/preprocessor/Lexer.h" |
| #include "compiler/preprocessor/Macro.h" |
| #include "compiler/preprocessor/SourceLocation.h" |
| |
| namespace pp |
| { |
| |
| class Diagnostics; |
| class DirectiveHandler; |
| class Tokenizer; |
| |
| class DirectiveParser : public Lexer |
| { |
| public: |
| DirectiveParser(Tokenizer *tokenizer, |
| MacroSet *macroSet, |
| Diagnostics *diagnostics, |
| DirectiveHandler *directiveHandler, |
| int maxMacroExpansionDepth); |
| |
| void lex(Token *token) override; |
| |
| private: |
| void parseDirective(Token *token); |
| void parseDefine(Token *token); |
| void parseUndef(Token *token); |
| void parseIf(Token *token); |
| void parseIfdef(Token *token); |
| void parseIfndef(Token *token); |
| void parseElse(Token *token); |
| void parseElif(Token *token); |
| void parseEndif(Token *token); |
| void parseError(Token *token); |
| void parsePragma(Token *token); |
| void parseExtension(Token *token); |
| void parseVersion(Token *token); |
| void parseLine(Token *token); |
| |
| bool skipping() const; |
| void parseConditionalIf(Token *token); |
| int parseExpressionIf(Token *token); |
| int parseExpressionIfdef(Token *token); |
| |
| struct ConditionalBlock |
| { |
| std::string type; |
| SourceLocation location; |
| bool skipBlock; |
| bool skipGroup; |
| bool foundValidGroup; |
| bool foundElseGroup; |
| |
| ConditionalBlock() |
| : skipBlock(false), skipGroup(false), foundValidGroup(false), foundElseGroup(false) |
| { |
| } |
| }; |
| bool mPastFirstStatement; |
| bool mSeenNonPreprocessorToken; // Tracks if a non-preprocessor token has been seen yet. Some |
| // macros, such as |
| // #extension must be declared before all shader code. |
| std::vector<ConditionalBlock> mConditionalStack; |
| Tokenizer *mTokenizer; |
| MacroSet *mMacroSet; |
| Diagnostics *mDiagnostics; |
| DirectiveHandler *mDirectiveHandler; |
| int mShaderVersion; |
| int mMaxMacroExpansionDepth; |
| }; |
| |
| } // namespace pp |
| |
| #endif // COMPILER_PREPROCESSOR_DIRECTIVEPARSER_H_ |