kc3-lang/angle/src/compiler/translator/RemoveSwitchFallThrough.h

• Show log

  Commit

• Hash : 6d40bbdd
  Author :
  Date : 2016-09-30T13:49:38
  

  Split TIntermBlock from TIntermAggregate
  
  The new TIntermBlock node class replaces TIntermAggregate nodes with
  the EOpSequence op. It represents the root node of the tree which is
  a list of declarations and function definitions, and any code blocks
  that can be denoted by curly braces. These include function and loop
  bodies, and if-else branches.
  
  This change enables a bunch of more compile-time type checking, and
  makes the AST code easier to understand and less error-prone.
  
  The PostProcess step that used to be done to ensure that the root node
  is TIntermAggregate is removed in favor of making sure that the root
  node is a TIntermBlock in the glslang.y parsing code.
  
  Intermediate output formatting is improved to print the EOpNull error
  in a clearer way.
  
  After this patch, TIntermAggregate is still used for function
  definitions, function prototypes, function parameter lists, function
  calls, variable and invariant declarations and the comma (sequence)
  operator.
  
  BUG=angleproject:1490
  TEST=angle_unittests, angle_end2end_tests
  
  Change-Id: I04044affff979a11577bc1fe75d747e538b799c8
  Reviewed-on: https://chromium-review.googlesource.com/393726
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  

Download

• src/compiler/translator/RemoveSwitchFallThrough.h

• //
  // 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.
  //
  
  #ifndef COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
  #define COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
  
  #include "compiler/translator/IntermNode.h"
  
  class RemoveSwitchFallThrough : public TIntermTraverser
  {
    public:
      // When given a statementList from a switch AST node, return an updated
      // statementList that has fall-through removed.
      static TIntermBlock *removeFallThrough(TIntermBlock *statementList);
  
    private:
      RemoveSwitchFallThrough(TIntermBlock *statementList);
  
      void visitSymbol(TIntermSymbol *node) override;
      void visitConstantUnion(TIntermConstantUnion *node) override;
      bool visitBinary(Visit, TIntermBinary *node) override;
      bool visitUnary(Visit, TIntermUnary *node) override;
      bool visitTernary(Visit visit, TIntermTernary *node) override;
      bool visitIfElse(Visit visit, TIntermIfElse *node) override;
      bool visitSwitch(Visit, TIntermSwitch *node) override;
      bool visitCase(Visit, TIntermCase *node) override;
      bool visitAggregate(Visit, TIntermAggregate *node) override;
      bool visitBlock(Visit, TIntermBlock *node) override;
      bool visitLoop(Visit, TIntermLoop *node) override;
      bool visitBranch(Visit, TIntermBranch *node) override;
  
      void outputSequence(TIntermSequence *sequence, size_t startIndex);
      void handlePreviousCase();
  
      TIntermBlock *mStatementList;
      TIntermBlock *mStatementListOut;
      bool mLastStatementWasBreak;
      TIntermBlock *mPreviousCase;
      std::vector<TIntermBlock *> mCasesSharingBreak;
  };
  
  #endif // COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
  

Download