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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 // Copied from strings/stringpiece.h with modifications | 4 // Copied from strings/stringpiece.h with modifications |
| 5 // | 5 // |
| 6 // A string-like object that points to a sized piece of memory. | 6 // A string-like object that points to a sized piece of memory. |
| 7 // | 7 // |
| 8 // You can use StringPiece as a function or method parameter. A StringPiece | 8 // You can use StringPiece as a function or method parameter. A StringPiece |
| 9 // parameter can receive a double-quoted string literal argument, a "const | 9 // parameter can receive a double-quoted string literal argument, a "const |
| 10 // char*" argument, a string argument, or a StringPiece argument with no data | 10 // char*" argument, a string argument, or a StringPiece argument with no data |
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| 23 #define BASE_STRINGS_STRING_PIECE_H_ | 23 #define BASE_STRINGS_STRING_PIECE_H_ |
| 24 | 24 |
| 25 #include <stddef.h> | 25 #include <stddef.h> |
| 26 | 26 |
| 27 #include <iosfwd> | 27 #include <iosfwd> |
| 28 #include <string> | 28 #include <string> |
| 29 | 29 |
| 30 #include "base/base_export.h" | 30 #include "base/base_export.h" |
| 31 #include "base/logging.h" | 31 #include "base/logging.h" |
| 32 #include "base/strings/string16.h" | 32 #include "base/strings/string16.h" |
| 33 #include "base/strings/string_piece_forward.h" |
| 33 | 34 |
| 34 namespace base { | 35 namespace base { |
| 35 | 36 |
| 36 template <typename STRING_TYPE> class BasicStringPiece; | |
| 37 typedef BasicStringPiece<std::string> StringPiece; | |
| 38 typedef BasicStringPiece<string16> StringPiece16; | |
| 39 | |
| 40 // internal -------------------------------------------------------------------- | 37 // internal -------------------------------------------------------------------- |
| 41 | 38 |
| 42 // Many of the StringPiece functions use different implementations for the | 39 // Many of the StringPiece functions use different implementations for the |
| 43 // 8-bit and 16-bit versions, and we don't want lots of template expansions in | 40 // 8-bit and 16-bit versions, and we don't want lots of template expansions in |
| 44 // this (very common) header that will slow down compilation. | 41 // this (very common) header that will slow down compilation. |
| 45 // | 42 // |
| 46 // So here we define overloaded functions called by the StringPiece template. | 43 // So here we define overloaded functions called by the StringPiece template. |
| 47 // For those that share an implementation, the two versions will expand to a | 44 // For those that share an implementation, the two versions will expand to a |
| 48 // template internal to the .cc file. | 45 // template internal to the .cc file. |
| 49 namespace internal { | 46 namespace internal { |
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| 458 }; | 455 }; |
| 459 struct StringPiece16Hash { | 456 struct StringPiece16Hash { |
| 460 std::size_t operator()(const StringPiece16& sp16) const { | 457 std::size_t operator()(const StringPiece16& sp16) const { |
| 461 HASH_STRING_PIECE(StringPiece16, sp16); | 458 HASH_STRING_PIECE(StringPiece16, sp16); |
| 462 } | 459 } |
| 463 }; | 460 }; |
| 464 | 461 |
| 465 } // namespace base | 462 } // namespace base |
| 466 | 463 |
| 467 #endif // BASE_STRINGS_STRING_PIECE_H_ | 464 #endif // BASE_STRINGS_STRING_PIECE_H_ |
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