angleutils.h

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Author : Olli Etuaho
Date : 2017-09-27 11:20:15
Hash : c853804c
Message : Add support for arrays of arrays to VariableLocation Array indices are sorted so that the outermost index is in the back. This is because we want to be consistent with future arrays of arrays parsing code. In parsing we'll have a utility function to make a TType object into an array, and there it's most natural to push the new outermost sizes to the back of the vector. Further patches will still be needed to parse arrays of arrays and add support to arrays of arrays into the API. BUG=angleproject:2125 TEST=angle_unittests, angle_end2end_tests Change-Id: I6c88edabf68ae9dbd803ec6d20543016c408b702 Reviewed-on: https://chromium-review.googlesource.com/686414 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

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
{

#if defined(ANGLE_ENABLE_D3D9) || defined(ANGLE_ENABLE_D3D11)
using Microsoft::WRL::ComPtr;
#endif  // defined(ANGLE_ENABLE_D3D9) || defined(ANGLE_ENABLE_D3D11)

class NonCopyable
{
  protected:
    NonCopyable() = default;
    ~NonCopyable() = default;

  private:
    NonCopyable(const NonCopyable&) = delete;
    void operator=(const NonCopyable&) = delete;
};

extern const uintptr_t DirtyPointer;

}  // namespace angle

template <typename T, size_t N>
constexpr inline size_t ArraySize(T (&)[N])
{
    return N;
}

template <typename T>
class WrappedArray final : angle::NonCopyable
{
  public:
    template <size_t N>
    constexpr WrappedArray(const T (&data)[N]) : mArray(&data[0]), mSize(N)
    {
    }

    constexpr WrappedArray() : mArray(nullptr), mSize(0) {}
    constexpr WrappedArray(const T *data, size_t size) : mArray(data), mSize(size) {}

    WrappedArray(WrappedArray &&other) : WrappedArray()
    {
        std::swap(mArray, other.mArray);
        std::swap(mSize, other.mSize);
    }

    ~WrappedArray() {}

    constexpr const T *get() const { return mArray; }
    constexpr size_t size() const { return mSize; }

  private:
    const T *mArray;
    size_t mSize;
};

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 = nullptr;
    }
}

template <typename T>
void SafeDelete(T *&resource)
{
    delete resource;
    resource = nullptr;
}

template <typename T>
void SafeDeleteContainer(T& resource)
{
    for (auto &element : resource)
    {
        SafeDelete(element);
    }
    resource.clear();
}

template <typename T>
void SafeDeleteArray(T*& resource)
{
    delete[] resource;
    resource = nullptr;
}

// 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();
}

std::string ArrayString(unsigned int i);

// Indices are stored in vectors with the outermost index in the back. In the output of the function
// the indices are reversed.
std::string ArrayIndexString(const std::vector<unsigned int> &indices);

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, ...);

template <typename T>
std::string ToString(const T &value)
{
    std::ostringstream o;
    o << value;
    return o.str();
}

// snprintf is not defined with MSVC prior to to msvc14
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf
#endif

#define GL_BGRX8_ANGLEX 0x6ABA
#define GL_BGR565_ANGLEX 0x6ABB
#define GL_BGRA4_ANGLEX 0x6ABC
#define GL_BGR5_A1_ANGLEX 0x6ABD
#define GL_INT_64_ANGLEX 0x6ABE
#define GL_UINT_64_ANGLEX 0x6ABF

// Hidden enum for the NULL D3D device type.
#define EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE 0x6AC0

// TODO(jmadill): Clean this up at some point.
#define EGL_PLATFORM_ANGLE_PLATFORM_METHODS_ANGLEX 0x9999

#define ANGLE_TRY_CHECKED_MATH(result)                     \
    if (!result.IsValid())                                 \
    {                                                      \
        return gl::InternalError() << "Integer overflow."; \
    }

// The below inlining code lifted from V8.
#if defined(__clang__) || (defined(__GNUC__) && defined(__has_attribute))
#define ANGLE_HAS_ATTRIBUTE_ALWAYS_INLINE (__has_attribute(always_inline))
#define ANGLE_HAS___FORCEINLINE 0
#elif defined(_MSC_VER)
#define ANGLE_HAS_ATTRIBUTE_ALWAYS_INLINE 0
#define ANGLE_HAS___FORCEINLINE 1
#else
#define ANGLE_HAS_ATTRIBUTE_ALWAYS_INLINE 0
#define ANGLE_HAS___FORCEINLINE 0
#endif

#if defined(NDEBUG) && ANGLE_HAS_ATTRIBUTE_ALWAYS_INLINE
#define ANGLE_INLINE inline __attribute__((always_inline))
#elif defined(NDEBUG) && ANGLE_HAS___FORCEINLINE
#define ANGLE_INLINE __forceinline
#else
#define ANGLE_INLINE inline
#endif

#ifndef ANGLE_STRINGIFY
#define ANGLE_STRINGIFY(x) #x
#endif

#ifndef ANGLE_MACRO_STRINGIFY
#define ANGLE_MACRO_STRINGIFY(x) ANGLE_STRINGIFY(x)
#endif

// Detect support for C++17 [[nodiscard]]
#if !defined(__has_cpp_attribute)
#define __has_cpp_attribute(name) 0
#endif  // !defined(__has_cpp_attribute)

#if __has_cpp_attribute(nodiscard)
#define ANGLE_NO_DISCARD [[nodiscard]]
#else
#define ANGLE_NO_DISCARD
#endif  // __has_cpp_attribute(nodiscard)

#endif // COMMON_ANGLEUTILS_H_

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

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