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

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• Hash : 47cb73ab
  Author :
  Date : 2016-09-09T11:41:44
  

  Refactor TConstantUnion.
  
  In preparation for constant folding fixes.
  
  BUG=chromium:637050
  
  Change-Id: I9ea49ce96b34c6ac3d2f0478b8fc6732c59e28be
  Reviewed-on: https://chromium-review.googlesource.com/373741
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/ConstantUnion.h

• //
  // Copyright (c) 2002-2014 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_CONSTANTUNION_H_
  #define COMPILER_TRANSLATOR_CONSTANTUNION_H_
  
  #include <assert.h>
  
  #include "compiler/translator/Common.h"
  #include "compiler/translator/BaseTypes.h"
  
  class TDiagnostics;
  
  class TConstantUnion
  {
    public:
      POOL_ALLOCATOR_NEW_DELETE();
      TConstantUnion();
  
      bool cast(TBasicType newType, const TConstantUnion &constant);
  
      void setIConst(int i) {iConst = i; type = EbtInt; }
      void setUConst(unsigned int u) { uConst = u; type = EbtUInt; }
      void setFConst(float f) {fConst = f; type = EbtFloat; }
      void setBConst(bool b) {bConst = b; type = EbtBool; }
  
      int getIConst() const { return iConst; }
      unsigned int getUConst() const { return uConst; }
      float getFConst() const { return fConst; }
      bool getBConst() const { return bConst; }
  
      bool operator==(const int i) const;
      bool operator==(const unsigned int u) const;
      bool operator==(const float f) const;
      bool operator==(const bool b) const;
      bool operator==(const TConstantUnion &constant) const;
      bool operator!=(const int i) const;
      bool operator!=(const unsigned int u) const;
      bool operator!=(const float f) const;
      bool operator!=(const bool b) const;
      bool operator!=(const TConstantUnion &constant) const;
      bool operator>(const TConstantUnion &constant) const;
      bool operator<(const TConstantUnion &constant) const;
      static TConstantUnion add(const TConstantUnion &lhs,
                                const TConstantUnion &rhs,
                                TDiagnostics *diag);
      static TConstantUnion sub(const TConstantUnion &lhs,
                                const TConstantUnion &rhs,
                                TDiagnostics *diag);
      static TConstantUnion mul(const TConstantUnion &lhs,
                                const TConstantUnion &rhs,
                                TDiagnostics *diag);
      TConstantUnion operator%(const TConstantUnion &constant) const;
      TConstantUnion operator>>(const TConstantUnion &constant) const;
      TConstantUnion operator<<(const TConstantUnion &constant) const;
      TConstantUnion operator&(const TConstantUnion &constant) const;
      TConstantUnion operator|(const TConstantUnion &constant) const;
      TConstantUnion operator^(const TConstantUnion &constant) const;
      TConstantUnion operator&&(const TConstantUnion &constant) const;
      TConstantUnion operator||(const TConstantUnion &constant) const;
  
      TBasicType getType() const { return type; }
    private:
      union {
          int iConst;           // used for ivec, scalar ints
          unsigned int uConst;  // used for uvec, scalar uints
          bool bConst;          // used for bvec, scalar bools
          float fConst;         // used for vec, mat, scalar floats
      };
  
      TBasicType type;
  };
  
  #endif // COMPILER_TRANSLATOR_CONSTANTUNION_H_
  

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