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Diffstat (limited to 'windows_msvc-x86_64/include/google/protobuf/stubs/hash.h')
| -rw-r--r-- | windows_msvc-x86_64/include/google/protobuf/stubs/hash.h | 438 |
1 files changed, 438 insertions, 0 deletions
diff --git a/windows_msvc-x86_64/include/google/protobuf/stubs/hash.h b/windows_msvc-x86_64/include/google/protobuf/stubs/hash.h new file mode 100644 index 0000000..4eac7d5 --- /dev/null +++ b/windows_msvc-x86_64/include/google/protobuf/stubs/hash.h @@ -0,0 +1,438 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Author: kenton@google.com (Kenton Varda) +// +// Deals with the fact that hash_map is not defined everywhere. + +#ifndef GOOGLE_PROTOBUF_STUBS_HASH_H__ +#define GOOGLE_PROTOBUF_STUBS_HASH_H__ + +#include <string.h> +#include <google/protobuf/stubs/common.h> + +#define GOOGLE_PROTOBUF_HAVE_HASH_MAP 1 +#define GOOGLE_PROTOBUF_HAVE_HASH_SET 1 + +// Android +#if defined(__ANDROID__) +# undef GOOGLE_PROTOBUF_HAVE_HASH_MAP +# undef GOOGLE_PROTOBUF_HAVE_HASH_MAP + +// Use C++11 unordered_{map|set} if available. +#elif ((_LIBCPP_STD_VER >= 11) || \ + (((__cplusplus >= 201103L) || defined(__GXX_EXPERIMENTAL_CXX0X)) && \ + (__GLIBCXX__ > 20090421))) +# define GOOGLE_PROTOBUF_HAS_CXX11_HASH + +// For XCode >= 4.6: the compiler is clang with libc++. +// For earlier XCode version: the compiler is gcc-4.2.1 with libstdc++. +// libc++ provides <unordered_map> and friends even in non C++11 mode, +// and it does not provide the tr1 library. Therefore the following macro +// checks against this special case. +// Note that we should not test the __APPLE_CC__ version number or the +// __clang__ macro, since the new compiler can still use -stdlib=libstdc++, in +// which case <unordered_map> is not compilable without -std=c++11 +#elif defined(__APPLE_CC__) +# if __GNUC__ >= 4 +# define GOOGLE_PROTOBUF_HAS_TR1 +# else +// Not tested for gcc < 4... These setting can compile under 4.2.1 though. +# define GOOGLE_PROTOBUF_HASH_NAMESPACE __gnu_cxx +# include <ext/hash_map> +# define GOOGLE_PROTOBUF_HASH_MAP_CLASS hash_map +# include <ext/hash_set> +# define GOOGLE_PROTOBUF_HASH_SET_CLASS hash_set +# endif + +// Version checks for gcc. +#elif defined(__GNUC__) +// For GCC 4.x+, use tr1::unordered_map/set; otherwise, follow the +// instructions from: +// https://gcc.gnu.org/onlinedocs/libstdc++/manual/backwards.html +# if __GNUC__ >= 4 +# define GOOGLE_PROTOBUF_HAS_TR1 +# elif __GNUC__ >= 3 +# include <backward/hash_map> +# define GOOGLE_PROTOBUF_HASH_MAP_CLASS hash_map +# include <backward/hash_set> +# define GOOGLE_PROTOBUF_HASH_SET_CLASS hash_set +# if __GNUC__ == 3 && __GNUC_MINOR__ == 0 +# define GOOGLE_PROTOBUF_HASH_NAMESPACE std // GCC 3.0 +# else +# define GOOGLE_PROTOBUF_HASH_NAMESPACE __gnu_cxx // GCC 3.1 and later +# endif +# else +# define GOOGLE_PROTOBUF_HASH_NAMESPACE +# include <hash_map> +# define GOOGLE_PROTOBUF_HASH_MAP_CLASS hash_map +# include <hash_set> +# define GOOGLE_PROTOBUF_HASH_SET_CLASS hash_set +# endif + +// Version checks for MSC. +// Apparently Microsoft decided to move hash_map *back* to the std namespace in +// MSVC 2010: +// http://blogs.msdn.com/vcblog/archive/2009/05/25/stl-breaking-changes-in-visual-studio-2010-beta-1.aspx +// And.. they are moved back to stdext in MSVC 2013 (haven't checked 2012). That +// said, use unordered_map for MSVC 2010 and beyond is our safest bet. +#elif defined(_MSC_VER) +# if _MSC_VER >= 1600 // Since Visual Studio 2010 +# define GOOGLE_PROTOBUF_HAS_CXX11_HASH +# define GOOGLE_PROTOBUF_HASH_COMPARE std::hash_compare +# elif _MSC_VER >= 1500 // Since Visual Studio 2008 +# define GOOGLE_PROTOBUF_HASH_NAMESPACE stdext +# include <hash_map> +# define GOOGLE_PROTOBUF_HASH_MAP_CLASS hash_map +# include <hash_set> +# define GOOGLE_PROTOBUF_HASH_SET_CLASS hash_set +# define GOOGLE_PROTOBUF_HASH_COMPARE stdext::hash_compare +# define GOOGLE_PROTOBUF_CONTAINERS_NEED_HASH_COMPARE +# elif _MSC_VER >= 1310 +# define GOOGLE_PROTOBUF_HASH_NAMESPACE stdext +# include <hash_map> +# define GOOGLE_PROTOBUF_HASH_MAP_CLASS hash_map +# include <hash_set> +# define GOOGLE_PROTOBUF_HASH_SET_CLASS hash_set +# define GOOGLE_PROTOBUF_HASH_COMPARE stdext::hash_compare +# else +# define GOOGLE_PROTOBUF_HASH_NAMESPACE std +# include <hash_map> +# define GOOGLE_PROTOBUF_HASH_MAP_CLASS hash_map +# include <hash_set> +# define GOOGLE_PROTOBUF_HASH_SET_CLASS hash_set +# define GOOGLE_PROTOBUF_HASH_COMPARE stdext::hash_compare +# endif + +// **ADD NEW COMPILERS SUPPORT HERE.** +// For other compilers, undefine the macro and fallback to use std::map, in +// google/protobuf/stubs/hash.h +#else +# undef GOOGLE_PROTOBUF_HAVE_HASH_MAP +# undef GOOGLE_PROTOBUF_HAVE_HASH_SET +#endif + +#if defined(GOOGLE_PROTOBUF_HAS_CXX11_HASH) +# define GOOGLE_PROTOBUF_HASH_NAMESPACE std +# include <unordered_map> +# define GOOGLE_PROTOBUF_HASH_MAP_CLASS unordered_map +# include <unordered_set> +# define GOOGLE_PROTOBUF_HASH_SET_CLASS unordered_set +#elif defined(GOOGLE_PROTOBUF_HAS_TR1) +# define GOOGLE_PROTOBUF_HASH_NAMESPACE std::tr1 +# include <tr1/unordered_map> +# define GOOGLE_PROTOBUF_HASH_MAP_CLASS unordered_map +# include <tr1/unordered_set> +# define GOOGLE_PROTOBUF_HASH_SET_CLASS unordered_set +#endif + +# define GOOGLE_PROTOBUF_HASH_NAMESPACE_DECLARATION_START \ + namespace google { \ + namespace protobuf { +# define GOOGLE_PROTOBUF_HASH_NAMESPACE_DECLARATION_END }} + +#undef GOOGLE_PROTOBUF_HAS_CXX11_HASH +#undef GOOGLE_PROTOBUF_HAS_TR1 + +#if defined(GOOGLE_PROTOBUF_HAVE_HASH_MAP) && \ + defined(GOOGLE_PROTOBUF_HAVE_HASH_SET) +#else +#define GOOGLE_PROTOBUF_MISSING_HASH +#include <map> +#include <set> +#endif + +namespace google { +namespace protobuf { + +#ifdef GOOGLE_PROTOBUF_MISSING_HASH +#undef GOOGLE_PROTOBUF_MISSING_HASH + +// This system doesn't have hash_map or hash_set. Emulate them using map and +// set. + +// Make hash<T> be the same as less<T>. Note that everywhere where custom +// hash functions are defined in the protobuf code, they are also defined such +// that they can be used as "less" functions, which is required by MSVC anyway. +template <typename Key> +struct hash { + // Dummy, just to make derivative hash functions compile. + int operator()(const Key& key) { + GOOGLE_LOG(FATAL) << "Should never be called."; + return 0; + } + + inline bool operator()(const Key& a, const Key& b) const { + return a < b; + } +}; + +// Make sure char* is compared by value. +template <> +struct hash<const char*> { + // Dummy, just to make derivative hash functions compile. + int operator()(const char* key) { + GOOGLE_LOG(FATAL) << "Should never be called."; + return 0; + } + + inline bool operator()(const char* a, const char* b) const { + return strcmp(a, b) < 0; + } +}; + +template <typename Key, typename Data, + typename HashFcn = hash<Key>, + typename EqualKey = std::equal_to<Key>, + typename Alloc = std::allocator< std::pair<const Key, Data> > > +class hash_map : public std::map<Key, Data, HashFcn, Alloc> { + typedef std::map<Key, Data, HashFcn, Alloc> BaseClass; + + public: + hash_map(int a = 0, const HashFcn& b = HashFcn(), + const EqualKey& c = EqualKey(), + const Alloc& d = Alloc()) : BaseClass(b, d) {} + + HashFcn hash_function() const { return HashFcn(); } +}; + +template <typename Key, + typename HashFcn = hash<Key>, + typename EqualKey = std::equal_to<Key> > +class hash_set : public std::set<Key, HashFcn> { + public: + hash_set(int = 0) {} + + HashFcn hash_function() const { return HashFcn(); } +}; + +#elif defined(_MSC_VER) && !defined(_STLPORT_VERSION) + +template <typename Key> +struct hash : public GOOGLE_PROTOBUF_HASH_COMPARE<Key> { +}; + +// MSVC's hash_compare<const char*> hashes based on the string contents but +// compares based on the string pointer. WTF? +class CstringLess { + public: + inline bool operator()(const char* a, const char* b) const { + return strcmp(a, b) < 0; + } +}; + +template <> +struct hash<const char*> + : public GOOGLE_PROTOBUF_HASH_COMPARE<const char*, CstringLess> {}; + +#ifdef GOOGLE_PROTOBUF_CONTAINERS_NEED_HASH_COMPARE + +template <typename Key, typename HashFcn, typename EqualKey> +struct InternalHashCompare : public GOOGLE_PROTOBUF_HASH_COMPARE<Key> { + InternalHashCompare() {} + InternalHashCompare(HashFcn hashfcn, EqualKey equalkey) + : hashfcn_(hashfcn), equalkey_(equalkey) {} + size_t operator()(const Key& key) const { return hashfcn_(key); } + bool operator()(const Key& key1, const Key& key2) const { + return !equalkey_(key1, key2); + } + HashFcn hashfcn_; + EqualKey equalkey_; +}; + +template <typename Key, typename Data, + typename HashFcn = hash<Key>, + typename EqualKey = std::equal_to<Key>, + typename Alloc = std::allocator< std::pair<const Key, Data> > > +class hash_map + : public GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_MAP_CLASS< + Key, Data, InternalHashCompare<Key, HashFcn, EqualKey>, Alloc> { + typedef GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_MAP_CLASS< + Key, Data, InternalHashCompare<Key, HashFcn, EqualKey>, Alloc> BaseClass; + + public: + hash_map(int a = 0, const HashFcn& b = HashFcn(), + const EqualKey& c = EqualKey(), const Alloc& d = Alloc()) + : BaseClass(InternalHashCompare<Key, HashFcn, EqualKey>(b, c), d) {} + + HashFcn hash_function() const { return HashFcn(); } +}; + +template <typename Key, typename HashFcn = hash<Key>, + typename EqualKey = std::equal_to<Key> > +class hash_set + : public GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_SET_CLASS< + Key, InternalHashCompare<Key, HashFcn, EqualKey> > { + public: + hash_set(int = 0) {} + + HashFcn hash_function() const { return HashFcn(); } +}; + +#else // GOOGLE_PROTOBUF_CONTAINERS_NEED_HASH_COMPARE + +template <typename Key, typename Data, + typename HashFcn = hash<Key>, + typename EqualKey = std::equal_to<Key>, + typename Alloc = std::allocator< std::pair<const Key, Data> > > +class hash_map + : public GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_MAP_CLASS< + Key, Data, HashFcn, EqualKey, Alloc> { + typedef GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_MAP_CLASS< + Key, Data, HashFcn, EqualKey, Alloc> BaseClass; + + public: + hash_map(int a = 0, const HashFcn& b = HashFcn(), + const EqualKey& c = EqualKey(), + const Alloc& d = Alloc()) : BaseClass(a, b, c, d) {} + + HashFcn hash_function() const { return HashFcn(); } +}; + +template <typename Key, typename HashFcn = hash<Key>, + typename EqualKey = std::equal_to<Key> > +class hash_set + : public GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_SET_CLASS< + Key, HashFcn, EqualKey> { + public: + hash_set(int = 0) {} + + HashFcn hash_function() const { return HashFcn(); } +}; +#endif // GOOGLE_PROTOBUF_CONTAINERS_NEED_HASH_COMPARE + +#else // defined(_MSC_VER) && !defined(_STLPORT_VERSION) + +template <typename Key> +struct hash : public GOOGLE_PROTOBUF_HASH_NAMESPACE::hash<Key> { +}; + +template <typename Key> +struct hash<const Key*> { + inline size_t operator()(const Key* key) const { + return reinterpret_cast<size_t>(key); + } +}; + +// Unlike the old SGI version, the TR1 "hash" does not special-case char*. So, +// we go ahead and provide our own implementation. +template <> +struct hash<const char*> { + inline size_t operator()(const char* str) const { + size_t result = 0; + for (; *str != '\0'; str++) { + result = 5 * result + *str; + } + return result; + } +}; + +template<> +struct hash<bool> { + size_t operator()(bool x) const { + return static_cast<size_t>(x); + } +}; + +template <typename Key, typename Data, + typename HashFcn = hash<Key>, + typename EqualKey = std::equal_to<Key>, + typename Alloc = std::allocator< std::pair<const Key, Data> > > +class hash_map + : public GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_MAP_CLASS< + Key, Data, HashFcn, EqualKey, Alloc> { + typedef GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_MAP_CLASS< + Key, Data, HashFcn, EqualKey, Alloc> BaseClass; + + public: + hash_map(int a = 0, const HashFcn& b = HashFcn(), + const EqualKey& c = EqualKey(), + const Alloc& d = Alloc()) : BaseClass(a, b, c, d) {} + + HashFcn hash_function() const { return HashFcn(); } +}; + +template <typename Key, typename HashFcn = hash<Key>, + typename EqualKey = std::equal_to<Key> > +class hash_set + : public GOOGLE_PROTOBUF_HASH_NAMESPACE::GOOGLE_PROTOBUF_HASH_SET_CLASS< + Key, HashFcn, EqualKey> { + public: + hash_set(int = 0) {} + + HashFcn hash_function() const { return HashFcn(); } +}; + +#endif // !GOOGLE_PROTOBUF_MISSING_HASH + +template <> +struct hash<string> { + inline size_t operator()(const string& key) const { + return hash<const char*>()(key.c_str()); + } + + static const size_t bucket_size = 4; + static const size_t min_buckets = 8; + inline bool operator()(const string& a, const string& b) const { + return a < b; + } +}; + +template <typename First, typename Second> +struct hash<pair<First, Second> > { + inline size_t operator()(const pair<First, Second>& key) const { + size_t first_hash = hash<First>()(key.first); + size_t second_hash = hash<Second>()(key.second); + + // FIXME(kenton): What is the best way to compute this hash? I have + // no idea! This seems a bit better than an XOR. + return first_hash * ((1 << 16) - 1) + second_hash; + } + + static const size_t bucket_size = 4; + static const size_t min_buckets = 8; + inline bool operator()(const pair<First, Second>& a, + const pair<First, Second>& b) const { + return a < b; + } +}; + +// Used by GCC/SGI STL only. (Why isn't this provided by the standard +// library? :( ) +struct streq { + inline bool operator()(const char* a, const char* b) const { + return strcmp(a, b) == 0; + } +}; + +} // namespace protobuf +} // namespace google + +#endif // GOOGLE_PROTOBUF_STUBS_HASH_H__ |