kc3-lang/angle/src/compiler/preprocessor/DirectiveParser.h

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• Hash : c3bef3e7
  Author :
  Date : 2018-10-03T07:35:09
  

  Allow 'defined' in define in non-WebGL.
  
  This is needed to pass dEQP conformance. Several of the harder dEQP
  tests around this behaviour are excluded from the mustpass list. This
  is presumably because the behaviours weren't implemented portably.
  Nevertheless we need to support conformant behaviour for GLES 2.0
  Contexts for the most simple uses.
  
  This also leaves the error behaviour intact for WebGL specs.
  
  Bug: angleproject:1335
  Change-Id: Ia80b4f71475efa928488ee6c2ee35c566d4602d4
  Reviewed-on: https://chromium-review.googlesource.com/c/1242013
  Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/preprocessor/DirectiveParser.h

• //
  // 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/Preprocessor.h"
  #include "compiler/preprocessor/SourceLocation.h"
  
  namespace angle
  {
  
  namespace pp
  {
  
  class Diagnostics;
  class DirectiveHandler;
  class Tokenizer;
  
  class DirectiveParser : public Lexer
  {
    public:
      DirectiveParser(Tokenizer *tokenizer,
                      MacroSet *macroSet,
                      Diagnostics *diagnostics,
                      DirectiveHandler *directiveHandler,
                      const PreprocessorSettings &settings);
      ~DirectiveParser() override;
  
      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;
      const PreprocessorSettings mSettings;
  };
  
  }  // namespace pp
  
  }  // namespace angle
  
  #endif  // COMPILER_PREPROCESSOR_DIRECTIVEPARSER_H_
  

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