kc3-lang/angle/src/compiler/preprocessor/Preprocessor.cpp

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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/Preprocessor.cpp

• //
  // 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.
  //
  
  #include "compiler/preprocessor/Preprocessor.h"
  
  #include "common/debug.h"
  #include "compiler/preprocessor/DiagnosticsBase.h"
  #include "compiler/preprocessor/DirectiveParser.h"
  #include "compiler/preprocessor/Macro.h"
  #include "compiler/preprocessor/MacroExpander.h"
  #include "compiler/preprocessor/Token.h"
  #include "compiler/preprocessor/Tokenizer.h"
  
  namespace angle
  {
  
  namespace pp
  {
  
  struct PreprocessorImpl
  {
      Diagnostics *diagnostics;
      MacroSet macroSet;
      Tokenizer tokenizer;
      DirectiveParser directiveParser;
      MacroExpander macroExpander;
  
      PreprocessorImpl(Diagnostics *diag,
                       DirectiveHandler *directiveHandler,
                       const PreprocessorSettings &settings)
          : diagnostics(diag),
            tokenizer(diag),
            directiveParser(&tokenizer, &macroSet, diag, directiveHandler, settings),
            macroExpander(&directiveParser, &macroSet, diag, settings, false)
      {
      }
  };
  
  Preprocessor::Preprocessor(Diagnostics *diagnostics,
                             DirectiveHandler *directiveHandler,
                             const PreprocessorSettings &settings)
  {
      mImpl = new PreprocessorImpl(diagnostics, directiveHandler, settings);
  }
  
  Preprocessor::~Preprocessor()
  {
      delete mImpl;
  }
  
  bool Preprocessor::init(size_t count, const char *const string[], const int length[])
  {
      static const int kDefaultGLSLVersion = 100;
  
      // Add standard pre-defined macros.
      predefineMacro("__LINE__", 0);
      predefineMacro("__FILE__", 0);
      predefineMacro("__VERSION__", kDefaultGLSLVersion);
      predefineMacro("GL_ES", 1);
  
      return mImpl->tokenizer.init(count, string, length);
  }
  
  void Preprocessor::predefineMacro(const char *name, int value)
  {
      PredefineMacro(&mImpl->macroSet, name, value);
  }
  
  void Preprocessor::lex(Token *token)
  {
      bool validToken = false;
      while (!validToken)
      {
          mImpl->macroExpander.lex(token);
          switch (token->type)
          {
              // We should not be returning internal preprocessing tokens.
              // Convert preprocessing tokens to compiler tokens or report
              // diagnostics.
              case Token::PP_HASH:
                  UNREACHABLE();
                  break;
              case Token::PP_NUMBER:
                  mImpl->diagnostics->report(Diagnostics::PP_INVALID_NUMBER, token->location,
                                             token->text);
                  break;
              case Token::PP_OTHER:
                  mImpl->diagnostics->report(Diagnostics::PP_INVALID_CHARACTER, token->location,
                                             token->text);
                  break;
              default:
                  validToken = true;
                  break;
          }
      }
  }
  
  void Preprocessor::setMaxTokenSize(size_t maxTokenSize)
  {
      mImpl->tokenizer.setMaxTokenSize(maxTokenSize);
  }
  
  }  // namespace pp
  
  }  // namespace angle
  

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