kc3-lang/angle/src/common/angleutils.h

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• Author : Jamie Madill
  Date : 2015-03-31 12:56:52
  Hash : f0d10f89
  Message : Replace non-copyable macro with a helper class. This class provides a simpler scheme for blocking default copy and assignment operators. It also reduces the amount of code needed since it's inherited to child classes. This also fixes the conflict between our macro and the same-named macro in Chromium code. BUG=angleproject:956 Change-Id: If0dc72aa3f63fbc7b8fa34907418821c64c39e2f Reviewed-on: https://chromium-review.googlesource.com/263257 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Brandon Jones <bajones@chromium.org>

• src/common/angleutils.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.
  //
  
  // angleutils.h: Common ANGLE utilities.
  
  #ifndef COMMON_ANGLEUTILS_H_
  #define COMMON_ANGLEUTILS_H_
  
  #include "common/platform.h"
  
  #include <climits>
  #include <cstdarg>
  #include <cstddef>
  #include <string>
  #include <set>
  #include <sstream>
  #include <vector>
  
  // A helper class to disallow copy and assignment operators
  namespace angle
  {
  
  class NonCopyable
  {
    public:
      NonCopyable() = default;
      ~NonCopyable() = default;
    protected:
      NonCopyable(const NonCopyable&) = delete;
      void operator=(const NonCopyable&) = delete;
  };
  
  }
  
  template <typename T, size_t N>
  inline size_t ArraySize(T(&)[N])
  {
      return N;
  }
  
  template <typename T, unsigned int N>
  void SafeRelease(T (&resourceBlock)[N])
  {
      for (unsigned int i = 0; i < N; i++)
      {
          SafeRelease(resourceBlock[i]);
      }
  }
  
  template <typename T>
  void SafeRelease(T& resource)
  {
      if (resource)
      {
          resource->Release();
          resource = NULL;
      }
  }
  
  template <typename T>
  void SafeDelete(T*& resource)
  {
      delete resource;
      resource = NULL;
  }
  
  template <typename T>
  void SafeDeleteContainer(T& resource)
  {
      for (typename T::iterator i = resource.begin(); i != resource.end(); i++)
      {
          SafeDelete(*i);
      }
      resource.clear();
  }
  
  template <typename T>
  void SafeDeleteArray(T*& resource)
  {
      delete[] resource;
      resource = NULL;
  }
  
  // Provide a less-than function for comparing structs
  // Note: struct memory must be initialized to zero, because of packing gaps
  template <typename T>
  inline bool StructLessThan(const T &a, const T &b)
  {
      return (memcmp(&a, &b, sizeof(T)) < 0);
  }
  
  // Provide a less-than function for comparing structs
  // Note: struct memory must be initialized to zero, because of packing gaps
  template <typename T>
  inline bool StructEquals(const T &a, const T &b)
  {
      return (memcmp(&a, &b, sizeof(T)) == 0);
  }
  
  template <typename T>
  inline void StructZero(T *obj)
  {
      memset(obj, 0, sizeof(T));
  }
  
  template <typename T>
  inline bool IsMaskFlagSet(T mask, T flag)
  {
      // Handles multibit flags as well
      return (mask & flag) == flag;
  }
  
  inline const char* MakeStaticString(const std::string &str)
  {
      static std::set<std::string> strings;
      std::set<std::string>::iterator it = strings.find(str);
      if (it != strings.end())
      {
          return it->c_str();
      }
  
      return strings.insert(str).first->c_str();
  }
  
  inline std::string ArrayString(unsigned int i)
  {
      // We assume UINT_MAX and GL_INVALID_INDEX are equal
      // See DynamicHLSL.cpp
      if (i == UINT_MAX)
      {
          return "";
      }
  
      std::stringstream strstr;
  
      strstr << "[";
      strstr << i;
      strstr << "]";
  
      return strstr.str();
  }
  
  inline std::string Str(int i)
  {
      std::stringstream strstr;
      strstr << i;
      return strstr.str();
  }
  
  size_t FormatStringIntoVector(const char *fmt, va_list vararg, std::vector<char>& buffer);
  
  std::string FormatString(const char *fmt, va_list vararg);
  std::string FormatString(const char *fmt, ...);
  
  // snprintf is not defined with MSVC prior to to msvc14
  #if defined(_MSC_VER) && _MSC_VER < 1900
  #define snprintf _snprintf
  #endif
  
  #define GL_BGRA4_ANGLEX 0x6ABC
  #define GL_BGR5_A1_ANGLEX 0x6ABD
  #define GL_INT_64_ANGLEX 0x6ABE
  #define GL_STRUCT_ANGLEX 0x6ABF
  
  // Hidden enum for the NULL D3D device type.
  #define EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE 0x6AC0
  
  #endif // COMMON_ANGLEUTILS_H_