text: // Copyright (c) 2015-2016 The Khronos Group Inc.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #ifndef LIBSPIRV_PRINT_H_
  #define LIBSPIRV_PRINT_H_
  
  #include <iostream>
  #include <sstream>
  
  namespace libspirv {
  
  // Wrapper for out stream selection.
  class out_stream {
   public:
    out_stream() : pStream(nullptr) {}
    explicit out_stream(std::stringstream& stream) : pStream(&stream) {}
  
    std::ostream& get() {
      if (pStream) {
        return *pStream;
      }
      return std::cout;
    }
  
   private:
    std::stringstream* pStream;
  };
  
  namespace clr {
  // Resets console color.
  struct reset {
    operator const char*();
  };
  // Sets console color to grey.
  struct grey {
    operator const char*();
  };
  // Sets console color to red.
  struct red {
    operator const char*();
  };
  // Sets console color to green.
  struct green {
    operator const char*();
  };
  // Sets console color to yellow.
  struct yellow {
    operator const char*();
  };
  // Sets console color to blue.
  struct blue {
    operator const char*();
  };
  }  // namespace clr
  
  }  // namespace libspirv
  
  #endif  // LIBSPIRV_PRINT_H_
  