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

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• Hash : 4e4facd4
  Author :
  Date : 2010-06-02T15:21:22
  

  Refactored InfoSink. I have replaced most instances of sprintf with std::ostringstream to make it safer. I have made sure that everything still compiles and passes conformance tests.
  Review URL: http://codereview.appspot.com/1391041
  
  git-svn-id: https://angleproject.googlecode.com/svn/trunk@322 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/compiler/ConstantUnion.h

• //
  // Copyright (c) 2002-2010 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 _CONSTANT_UNION_INCLUDED_
  #define _CONSTANT_UNION_INCLUDED_
  
  #include <assert.h>
  
  class ConstantUnion {
  public:
  
      POOL_ALLOCATOR_NEW_DELETE(GlobalPoolAllocator)        
      void setIConst(int i) {iConst = i; type = EbtInt; }
      void setFConst(float f) {fConst = f; type = EbtFloat; }
      void setBConst(bool b) {bConst = b; type = EbtBool; }
  
      int getIConst() { return iConst; }
      float getFConst() { return fConst; }
      bool getBConst() { return bConst; }
      int getIConst() const { return iConst; }
      float getFConst() const { return fConst; }
      bool getBConst() const { return bConst; }
  
      bool operator==(const int i) const
      {
          if (i == iConst)
              return true;
  
          return false;
      }
  
      bool operator==(const float f) const
      {
          if (f == fConst)
              return true;
  
          return false;
      }
  
      bool operator==(const bool b) const
      {
          if (b == bConst)
              return true;
  
          return false;
      }
  
      bool operator==(const ConstantUnion& constant) const
      {
          if (constant.type != type)
              return false;
  
          switch (type) {
          case EbtInt:
              if (constant.iConst == iConst)
                  return true;
  
              break;
          case EbtFloat:
              if (constant.fConst == fConst)
                  return true;
  
              break;
          case EbtBool:
              if (constant.bConst == bConst)
                  return true;
  
              break;
          }
  
          return false;
      }
  
      bool operator!=(const int i) const
      {
          return !operator==(i);
      }
  
      bool operator!=(const float f) const
      {
          return !operator==(f);
      }
  
      bool operator!=(const bool b) const
      {
          return !operator==(b);
      }
  
      bool operator!=(const ConstantUnion& constant) const
      {
          return !operator==(constant);
      }
  
      bool operator>(const ConstantUnion& constant) const
      { 
          assert(type == constant.type);
          switch (type) {
          case EbtInt:
              if (iConst > constant.iConst)
                  return true;
  
              return false;
          case EbtFloat:
              if (fConst > constant.fConst)
                  return true;
  
              return false;
          default:
              assert(false && "Default missing");
              return false;
          }
  
          return false;
      }
  
      bool operator<(const ConstantUnion& constant) const
      { 
          assert(type == constant.type);
          switch (type) {
          case EbtInt:
              if (iConst < constant.iConst)
                  return true;
  
              return false;
          case EbtFloat:
              if (fConst < constant.fConst)
                  return true;
  
              return false;
          default:
              assert(false && "Default missing");
              return false;
          }
  
          return false;
      }
  
      ConstantUnion operator+(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt: returnValue.setIConst(iConst + constant.iConst); break;
          case EbtFloat: returnValue.setFConst(fConst + constant.fConst); break;
          default: assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator-(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt: returnValue.setIConst(iConst - constant.iConst); break;
          case EbtFloat: returnValue.setFConst(fConst - constant.fConst); break;
          default: assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator*(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt: returnValue.setIConst(iConst * constant.iConst); break;
          case EbtFloat: returnValue.setFConst(fConst * constant.fConst); break; 
          default: assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator%(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt: returnValue.setIConst(iConst % constant.iConst); break;
          default:     assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator>>(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt: returnValue.setIConst(iConst >> constant.iConst); break;
          default:     assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator<<(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt: returnValue.setIConst(iConst << constant.iConst); break;
          default:     assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator&(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt:  returnValue.setIConst(iConst & constant.iConst); break;
          default:     assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator|(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt:  returnValue.setIConst(iConst | constant.iConst); break;
          default:     assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator^(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtInt:  returnValue.setIConst(iConst ^ constant.iConst); break;
          default:     assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator&&(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtBool: returnValue.setBConst(bConst && constant.bConst); break;
          default:     assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      ConstantUnion operator||(const ConstantUnion& constant) const
      { 
          ConstantUnion returnValue;
          assert(type == constant.type);
          switch (type) {
          case EbtBool: returnValue.setBConst(bConst || constant.bConst); break;
          default:     assert(false && "Default missing");
          }
  
          return returnValue;
      }
  
      TBasicType getType() const { return type; }
  private:
  
      union  {
          int iConst;  // used for ivec, scalar ints
          bool bConst; // used for bvec, scalar bools
          float fConst;   // used for vec, mat, scalar floats
      } ;
  
      TBasicType type;
  };
  
  #endif // _CONSTANT_UNION_INCLUDED_
  

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