kc3-lang/angle/src/compiler/translator/SeparateDeclarations.cpp

Branch : - branch - main - tag -

• Show log

  Commit

• Author : Jamie Madill
  Date : 2016-12-12 14:42:19
  Hash : d7b1ab58
  Message : Fix up translator style. Using git cl format. BUG=angleproject:650 Change-Id: I7d3f98d2b0dcfb0a8de6c35327db74e55c28d761 Reviewed-on: https://chromium-review.googlesource.com/419059 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/compiler/translator/SeparateDeclarations.cpp

• //
  // Copyright (c) 2002-2015 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.
  //
  // The SeparateDeclarations function processes declarations, so that in the end each declaration
  // contains only one declarator.
  // This is useful as an intermediate step when initialization needs to be separated from
  // declaration, or when things need to be unfolded out of the initializer.
  // Example:
  //     int a[1] = int[1](1), b[1] = int[1](2);
  // gets transformed when run through this class into the AST equivalent of:
  //     int a[1] = int[1](1);
  //     int b[1] = int[1](2);
  
  #include "compiler/translator/SeparateDeclarations.h"
  
  #include "compiler/translator/IntermNode.h"
  
  namespace sh
  {
  
  namespace
  {
  
  class SeparateDeclarationsTraverser : private TIntermTraverser
  {
    public:
      static void apply(TIntermNode *root);
  
    private:
      SeparateDeclarationsTraverser();
      bool visitDeclaration(Visit, TIntermDeclaration *node) override;
  };
  
  void SeparateDeclarationsTraverser::apply(TIntermNode *root)
  {
      SeparateDeclarationsTraverser separateDecl;
      root->traverse(&separateDecl);
      separateDecl.updateTree();
  }
  
  SeparateDeclarationsTraverser::SeparateDeclarationsTraverser()
      : TIntermTraverser(true, false, false)
  {
  }
  
  bool SeparateDeclarationsTraverser::visitDeclaration(Visit, TIntermDeclaration *node)
  {
      TIntermSequence *sequence = node->getSequence();
      if (sequence->size() > 1)
      {
          TIntermBlock *parentBlock = getParentNode()->getAsBlock();
          ASSERT(parentBlock != nullptr);
  
          TIntermSequence replacementDeclarations;
          for (size_t ii = 0; ii < sequence->size(); ++ii)
          {
              TIntermDeclaration *replacementDeclaration = new TIntermDeclaration();
  
              replacementDeclaration->appendDeclarator(sequence->at(ii)->getAsTyped());
              replacementDeclaration->setLine(sequence->at(ii)->getLine());
              replacementDeclarations.push_back(replacementDeclaration);
          }
  
          mMultiReplacements.push_back(
              NodeReplaceWithMultipleEntry(parentBlock, node, replacementDeclarations));
      }
      return false;
  }
  
  }  // namespace
  
  void SeparateDeclarations(TIntermNode *root)
  {
      SeparateDeclarationsTraverser::apply(root);
  }
  
  }  // namespace sh