kc3-lang/angle/src/compiler/DetectRecursion.h

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  Commit

• Author : zmo@google.com
  Date : 2011-08-03 20:57:52
  Hash : 5a0a8dd3
  Message : Remove unnecessary Visit function overloading. BUG=none TEST=build ok, run as before Review URL: http://codereview.appspot.com/4814063 git-svn-id: https://angleproject.googlecode.com/svn/trunk@715 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/compiler/DetectRecursion.h

• //
  // Copyright (c) 2002-2011 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.
  //
  
  #ifndef COMPILER_DETECT_RECURSION_H_
  #define COMPILER_DETECT_RECURSION_H_
  
  #include "GLSLANG/ShaderLang.h"
  
  #include "compiler/intermediate.h"
  #include "compiler/VariableInfo.h"
  
  // Traverses intermediate tree to detect function recursion.
  class DetectRecursion : public TIntermTraverser {
  public:
      enum ErrorCode {
          kErrorMissingMain,
          kErrorRecursion,
          kErrorNone
      };
  
      DetectRecursion();
      ~DetectRecursion();
  
      virtual bool visitAggregate(Visit, TIntermAggregate*);
  
      ErrorCode detectRecursion();
  
  private:
      class FunctionNode {
      public:
          FunctionNode(const TString& fname);
  
          const TString& getName() const;
  
          // If a function is already in the callee list, this becomes a no-op.
          void addCallee(FunctionNode* callee);
  
          // Return true if recursive function calls are detected.
          bool detectRecursion();
  
      private:
          // mangled function name is unique.
          TString name;
  
          // functions that are directly called by this function.
          TVector<FunctionNode*> callees;
  
          Visit visit;
      };
  
      FunctionNode* findFunctionByName(const TString& name);
  
      TVector<FunctionNode*> functions;
      FunctionNode* currentFunction;
  };
  
  #endif  // COMPILER_DETECT_RECURSION_H_