Common.h

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Author : Stuart Morgan
Date : 2019-08-14 12:25:12
Hash : 9d737966
Message : Standardize copyright notices to project style For all "ANGLE Project" copyrights, standardize to the format specified by the style guide. Changes: - "Copyright (c)" and "Copyright(c)" changed to just "Copyright". - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1"). - Fixed a small number of files that had no copyright date using the initial commit year from the version control history. - Fixed one instance of copyright being "The ANGLE Project" rather than "The ANGLE Project Authors" These changes are applied both to the copyright of source file, and where applicable to copyright statements that are generated by templates. BUG=angleproject:3811 Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/compiler/translator/Common.h

//
// Copyright 2002 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 COMPILER_TRANSLATOR_COMMON_H_
#define COMPILER_TRANSLATOR_COMMON_H_

#include <stdio.h>
#include <limits>
#include <map>
#include <sstream>
#include <string>
#include <unordered_map>
#include <vector>

#include "common/angleutils.h"
#include "common/debug.h"
#include "common/third_party/smhasher/src/PMurHash.h"
#include "compiler/translator/PoolAlloc.h"

namespace sh
{

struct TSourceLoc
{
    int first_file;
    int first_line;
    int last_file;
    int last_line;
};

//
// Put POOL_ALLOCATOR_NEW_DELETE in base classes to make them use this scheme.
//
#define POOL_ALLOCATOR_NEW_DELETE                                                    \
    void *operator new(size_t s) { return GetGlobalPoolAllocator()->allocate(s); }   \
    void *operator new(size_t, void *_Where) { return (_Where); }                    \
    void operator delete(void *) {}                                                  \
    void operator delete(void *, void *) {}                                          \
    void *operator new[](size_t s) { return GetGlobalPoolAllocator()->allocate(s); } \
    void *operator new[](size_t, void *_Where) { return (_Where); }                  \
    void operator delete[](void *) {}                                                \
    void operator delete[](void *, void *) {}

//
// Pool version of string.
//
typedef pool_allocator<char> TStringAllocator;
typedef std::basic_string<char, std::char_traits<char>, TStringAllocator> TString;
typedef std::basic_ostringstream<char, std::char_traits<char>, TStringAllocator> TStringStream;

//
// Persistent string memory.  Should only be used for strings that survive
// across compiles.
//
#define TPersistString std::string
#define TPersistStringStream std::ostringstream

//
// Pool allocator versions of vectors, lists, and maps
//
template <class T>
class TVector : public std::vector<T, pool_allocator<T>>
{
  public:
    POOL_ALLOCATOR_NEW_DELETE

    typedef typename std::vector<T, pool_allocator<T>>::size_type size_type;
    TVector() : std::vector<T, pool_allocator<T>>() {}
    TVector(const pool_allocator<T> &a) : std::vector<T, pool_allocator<T>>(a) {}
    TVector(size_type i) : std::vector<T, pool_allocator<T>>(i) {}
    TVector(std::initializer_list<T> init) : std::vector<T, pool_allocator<T>>(init) {}
};

template <class K, class D, class H = std::hash<K>, class CMP = std::equal_to<K>>
class TUnorderedMap : public std::unordered_map<K, D, H, CMP, pool_allocator<std::pair<const K, D>>>
{
  public:
    POOL_ALLOCATOR_NEW_DELETE
    typedef pool_allocator<std::pair<const K, D>> tAllocator;

    TUnorderedMap() : std::unordered_map<K, D, H, CMP, tAllocator>() {}
    // use correct two-stage name lookup supported in gcc 3.4 and above
    TUnorderedMap(const tAllocator &a)
        : std::unordered_map<K, D, H, CMP, tAllocator>(
              std::unordered_map<K, D, H, CMP, tAllocator>::key_compare(),
              a)
    {}
};

template <class K, class D, class CMP = std::less<K>>
class TMap : public std::map<K, D, CMP, pool_allocator<std::pair<const K, D>>>
{
  public:
    POOL_ALLOCATOR_NEW_DELETE
    typedef pool_allocator<std::pair<const K, D>> tAllocator;

    TMap() : std::map<K, D, CMP, tAllocator>() {}
    // use correct two-stage name lookup supported in gcc 3.4 and above
    TMap(const tAllocator &a)
        : std::map<K, D, CMP, tAllocator>(std::map<K, D, CMP, tAllocator>::key_compare(), a)
    {}
};

// Integer to TString conversion
template <typename T>
inline TString str(T i)
{
    ASSERT(std::numeric_limits<T>::is_integer);
    char buffer[((8 * sizeof(T)) / 3) + 3];
    const char *formatStr = std::numeric_limits<T>::is_signed ? "%d" : "%u";
    snprintf(buffer, sizeof(buffer), formatStr, i);
    return buffer;
}

// Allocate a char array in the global memory pool. str must be a null terminated string. strLength
// is the length without the null terminator.
inline const char *AllocatePoolCharArray(const char *str, size_t strLength)
{
    size_t requiredSize = strLength + 1;
    char *buffer        = static_cast<char *>(GetGlobalPoolAllocator()->allocate(requiredSize));
    memcpy(buffer, str, requiredSize);
    ASSERT(buffer[strLength] == '\0');
    return buffer;
}

// Initialize a new stream which must be imbued with the classic locale
template <typename T>
T InitializeStream()
{
    T stream;
    stream.imbue(std::locale::classic());
    return stream;
}

}  // namespace sh

namespace std
{
template <>
struct hash<sh::TString>
{
    size_t operator()(const sh::TString &s) const
    {
        return angle::PMurHash32(0, s.data(), static_cast<int>(s.length()));
    }
};
}  // namespace std

#endif  // COMPILER_TRANSLATOR_COMMON_H_

kc3-lang/angle/src/compiler/translator/Common.h

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kc3-lang/angle /src/compiler/translator/Common.h