1 files changed, 136 insertions, 0 deletions
diff --git a/ipc/chromium/src/base/hash_tables.h b/ipc/chromium/src/base/hash_tables.h
new file mode 100644
index 000000000..956cadb3d
--- /dev/null
+++ b/ipc/chromium/src/base/hash_tables.h
@@ -0,0 +1,136 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+//
+// Deal with the differences between Microsoft and GNU implemenations
+// of hash_map. Allows all platforms to use |base::hash_map| and
+// |base::hash_set|.
+//  eg:
+//   base::hash_map<int> my_map;
+//   base::hash_set<int> my_set;
+//
+
+#ifndef BASE_HASH_TABLES_H_
+#define BASE_HASH_TABLES_H_
+
+#include "build/build_config.h"
+
+#include "base/string16.h"
+
+#if defined(COMPILER_MSVC) || (defined(ANDROID) && defined(_STLP_STD_NAME))
+#ifdef COMPILER_MSVC
+#pragma push_macro("_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS")
+#define _SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS
+#endif
+
+// Suppress -Wshadow warnings from stlport headers.
+#ifdef __GNUC__
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wshadow"
+#  if MOZ_GCC_VERSION_AT_LEAST(4, 9, 0)
+#    pragma GCC diagnostic ignored "-Wshadow-local"
+#  endif
+#endif
+
+#include <hash_map>
+#include <hash_set>
+
+#ifdef __GNUC__
+#  if MOZ_GCC_VERSION_AT_LEAST(4, 9, 0)
+#    pragma GCC diagnostic pop // -Wshadow-local
+#  endif
+#  pragma GCC diagnostic pop // -Wshadow
+#endif
+
+#ifdef COMPILER_MSVC
+#pragma pop_macro("_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS")
+#endif
+namespace base {
+#ifdef ANDROID
+using _STLP_STD_NAME::hash_map;
+using _STLP_STD_NAME::hash_set;
+#else
+using stdext::hash_map;
+using stdext::hash_set;
+#endif
+}
+#elif defined(COMPILER_GCC)
+// This is a hack to disable the gcc 4.4 warning about hash_map and hash_set
+// being deprecated.  We can get rid of this when we upgrade to VS2008 and we
+// can use <tr1/unordered_map> and <tr1/unordered_set>.
+#ifdef __DEPRECATED
+#define CHROME_OLD__DEPRECATED __DEPRECATED
+#undef __DEPRECATED
+#endif
+
+#include <ext/hash_map>
+#include <ext/hash_set>
+#include <string>
+
+#ifdef CHROME_OLD__DEPRECATED
+#define __DEPRECATED CHROME_OLD__DEPRECATED
+#undef CHROME_OLD__DEPRECATED
+#endif
+
+namespace base {
+using __gnu_cxx::hash_map;
+using __gnu_cxx::hash_set;
+}  // namespace base
+
+namespace __gnu_cxx {
+
+// The GNU C++ library provides identiy hash functions for many integral types,
+// but not for |long long|.  This hash function will truncate if |size_t| is
+// narrower than |long long|.  This is probably good enough for what we will
+// use it for.
+
+#define DEFINE_TRIVIAL_HASH(integral_type) \
+    template<> \
+    struct hash<integral_type> { \
+      std::size_t operator()(integral_type value) const { \
+        return static_cast<std::size_t>(value); \
+      } \
+    }
+
+DEFINE_TRIVIAL_HASH(long long);
+DEFINE_TRIVIAL_HASH(unsigned long long);
+
+#undef DEFINE_TRIVIAL_HASH
+
+// Implement string hash functions so that strings of various flavors can
+// be used as keys in STL maps and sets.  The hash algorithm comes from the
+// GNU C++ library, in <tr1/functional>.  It is duplicated here because GCC
+// versions prior to 4.3.2 are unable to compile <tr1/functional> when RTTI
+// is disabled, as it is in our build.
+
+#define DEFINE_STRING_HASH(string_type) \
+    template<> \
+    struct hash<string_type> { \
+      std::size_t operator()(const string_type& s) const { \
+        std::size_t result = 0; \
+        for (string_type::const_iterator i = s.begin(); i != s.end(); ++i) \
+          result = (result * 131) + *i; \
+        return result; \
+      } \
+    }
+
+DEFINE_STRING_HASH(std::string);
+DEFINE_STRING_HASH(std::wstring);
+
+#if defined(WCHAR_T_IS_UTF32)
+// If string16 and std::wstring are not the same type, provide a
+// specialization for string16.
+DEFINE_STRING_HASH(string16);
+#endif  // WCHAR_T_IS_UTF32
+
+#undef DEFINE_STRING_HASH
+
+}  // namespace __gnu_cxx
+
+#endif  // COMPILER
+
+#endif  // BASE_HASH_TABLES_H_