kc3-lang/angle/src/libANGLE/Error.h

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• Author : Yuly Novikov
  Date : 2017-01-13 17:48:57
  Hash : d73f852f
  Message : Reland "Replace gl::trace logging with Chromium style logging" Removing one usage of FormatString() and its static buffer. And preparation for Platform logging. Fix incorrect enabling of ERR() calls in UNIMPLEMENTED() and UNREACHABLE(), resulting in increased code size and <iostream> adding 5 static initializers to chrome because of cerr referenced in statically linked translator. BUG=angleproject:1660 Change-Id: I7caa18036118d532e0544f75278602559172ae04 Reviewed-on: https://chromium-review.googlesource.com/431457 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/libANGLE/Error.h

• //
  // Copyright (c) 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.
  
  // Error.h: Defines the egl::Error and gl::Error classes which encapsulate API errors
  // and optional error messages.
  
  #ifndef LIBANGLE_ERROR_H_
  #define LIBANGLE_ERROR_H_
  
  #include "angle_gl.h"
  #include "common/angleutils.h"
  #include <EGL/egl.h>
  
  #include <memory>
  #include <ostream>
  #include <string>
  
  namespace angle
  {
  template <typename ErrorT, typename ResultT, typename ErrorBaseT, ErrorBaseT NoErrorVal>
  class ErrorOrResultBase
  {
    public:
      ErrorOrResultBase(const ErrorT &error) : mError(error) {}
      ErrorOrResultBase(ErrorT &&error) : mError(std::move(error)) {}
  
      ErrorOrResultBase(ResultT &&result) : mError(NoErrorVal), mResult(std::forward<ResultT>(result))
      {
      }
  
      ErrorOrResultBase(const ResultT &result) : mError(NoErrorVal), mResult(result) {}
  
      bool isError() const { return mError.isError(); }
      const ErrorT &getError() const { return mError; }
      ResultT &&getResult() { return std::move(mResult); }
  
    private:
      ErrorT mError;
      ResultT mResult;
  };
  }  // namespace angle
  
  namespace gl
  {
  
  class Error final
  {
    public:
      explicit inline Error(GLenum errorCode);
      Error(GLenum errorCode, std::string &&msg);
      Error(GLenum errorCode, const char *msg, ...);
      Error(GLenum errorCode, GLuint id, const char *msg, ...);
      inline Error(const Error &other);
      inline Error(Error &&other);
  
      inline Error &operator=(const Error &other);
      inline Error &operator=(Error &&other);
  
      inline GLenum getCode() const;
      inline GLuint getID() const;
      inline bool isError() const;
  
      const std::string &getMessage() const;
  
      // Useful for mocking and testing
      bool operator==(const Error &other) const;
      bool operator!=(const Error &other) const;
  
    private:
      void createMessageString() const;
  
      friend std::ostream &operator<<(std::ostream &os, const Error &err);
  
      GLenum mCode;
      GLuint mID;
      mutable std::unique_ptr<std::string> mMessage;
  };
  
  template <typename ResultT>
  using ErrorOrResult = angle::ErrorOrResultBase<Error, ResultT, GLenum, GL_NO_ERROR>;
  
  namespace priv
  {
  template <GLenum EnumT>
  class ErrorStream : angle::NonCopyable
  {
    public:
      ErrorStream();
  
      template <typename T>
      ErrorStream &operator<<(T value);
  
      operator Error();
  
      template <typename T>
      operator ErrorOrResult<T>()
      {
          return static_cast<Error>(*this);
      }
  
    private:
      std::ostringstream mErrorStream;
  };
  
  // These convience methods for HRESULTS (really long) are used all over the place in the D3D
  // back-ends.
  #if defined(ANGLE_PLATFORM_WINDOWS)
  template <>
  template <>
  inline ErrorStream<GL_OUT_OF_MEMORY> &ErrorStream<GL_OUT_OF_MEMORY>::operator<<(HRESULT hresult)
  {
      mErrorStream << "HRESULT: 0x" << std::ios::hex << hresult;
      return *this;
  }
  
  template <>
  template <>
  inline ErrorStream<GL_INVALID_OPERATION> &ErrorStream<GL_INVALID_OPERATION>::operator<<(
      HRESULT hresult)
  {
      mErrorStream << "HRESULT: 0x" << std::ios::hex << hresult;
      return *this;
  }
  #endif  // defined(ANGLE_PLATFORM_WINDOWS)
  
  template <GLenum EnumT>
  template <typename T>
  ErrorStream<EnumT> &ErrorStream<EnumT>::operator<<(T value)
  {
      mErrorStream << value;
      return *this;
  }
  
  }  // namespace priv
  
  using OutOfMemory   = priv::ErrorStream<GL_OUT_OF_MEMORY>;
  using InternalError = priv::ErrorStream<GL_INVALID_OPERATION>;
  
  inline Error NoError()
  {
      return Error(GL_NO_ERROR);
  }
  
  }  // namespace gl
  
  namespace egl
  {
  
  class Error final
  {
    public:
      explicit inline Error(EGLint errorCode);
      Error(EGLint errorCode, const char *msg, ...);
      Error(EGLint errorCode, EGLint id, const char *msg, ...);
      Error(EGLint errorCode, EGLint id, const std::string &msg);
      inline Error(const Error &other);
      inline Error(Error &&other);
  
      inline Error &operator=(const Error &other);
      inline Error &operator=(Error &&other);
  
      inline EGLint getCode() const;
      inline EGLint getID() const;
      inline bool isError() const;
  
      const std::string &getMessage() const;
  
    private:
      void createMessageString() const;
  
      friend std::ostream &operator<<(std::ostream &os, const Error &err);
  
      EGLint mCode;
      EGLint mID;
      mutable std::unique_ptr<std::string> mMessage;
  };
  
  inline Error NoError()
  {
      return Error(EGL_SUCCESS);
  }
  
  template <typename ResultT>
  using ErrorOrResult = angle::ErrorOrResultBase<Error, ResultT, EGLint, EGL_SUCCESS>;
  
  }  // namespace egl
  
  #define ANGLE_CONCAT1(x, y) x##y
  #define ANGLE_CONCAT2(x, y) ANGLE_CONCAT1(x, y)
  #define ANGLE_LOCAL_VAR ANGLE_CONCAT2(_localVar, __LINE__)
  
  #define ANGLE_TRY(EXPR)                \
      {                                  \
          auto ANGLE_LOCAL_VAR = EXPR;   \
          if (ANGLE_LOCAL_VAR.isError()) \
          {                              \
              return ANGLE_LOCAL_VAR;    \
          }                              \
      }                                  \
      ANGLE_EMPTY_STATEMENT
  
  #define ANGLE_TRY_RESULT(EXPR, RESULT)         \
      {                                          \
          auto ANGLE_LOCAL_VAR = EXPR;           \
          if (ANGLE_LOCAL_VAR.isError())         \
          {                                      \
              return ANGLE_LOCAL_VAR.getError(); \
          }                                      \
          RESULT = ANGLE_LOCAL_VAR.getResult();  \
      }                                          \
      ANGLE_EMPTY_STATEMENT
  
  #undef ANGLE_LOCAL_VAR
  #undef ANGLE_CONCAT2
  #undef ANGLE_CONCAT1
  
  #include "Error.inl"
  
  #endif // LIBANGLE_ERROR_H_