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Side by Side Diff: base/json/json_parser.h

Issue 2664753002: Remove base::StringValue (Closed)
Patch Set: Rebase Created 3 years, 9 months ago
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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 4
5 #ifndef BASE_JSON_JSON_PARSER_H_ 5 #ifndef BASE_JSON_JSON_PARSER_H_
6 #define BASE_JSON_JSON_PARSER_H_ 6 #define BASE_JSON_JSON_PARSER_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <stdint.h> 9 #include <stdint.h>
10 10
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24 class Value; 24 class Value;
25 25
26 namespace internal { 26 namespace internal {
27 27
28 class JSONParserTest; 28 class JSONParserTest;
29 29
30 // The implementation behind the JSONReader interface. This class is not meant 30 // The implementation behind the JSONReader interface. This class is not meant
31 // to be used directly; it encapsulates logic that need not be exposed publicly. 31 // to be used directly; it encapsulates logic that need not be exposed publicly.
32 // 32 //
33 // This parser guarantees O(n) time through the input string. It also optimizes 33 // This parser guarantees O(n) time through the input string. It also optimizes
34 // base::StringValue by using StringPiece where possible when returning Value 34 // base::Value by using StringPiece where possible when returning Value
35 // objects by using "hidden roots," discussed in the implementation. 35 // objects by using "hidden roots," discussed in the implementation.
36 // 36 //
37 // Iteration happens on the byte level, with the functions CanConsume and 37 // Iteration happens on the byte level, with the functions CanConsume and
38 // NextChar. The conversion from byte to JSON token happens without advancing 38 // NextChar. The conversion from byte to JSON token happens without advancing
39 // the parser in GetNextToken/ParseToken, that is tokenization operates on 39 // the parser in GetNextToken/ParseToken, that is tokenization operates on
40 // the current parser position without advancing. 40 // the current parser position without advancing.
41 // 41 //
42 // Built on top of these are a family of Consume functions that iterate 42 // Built on top of these are a family of Consume functions that iterate
43 // internally. Invariant: on entry of a Consume function, the parser is wound 43 // internally. Invariant: on entry of a Consume function, the parser is wound
44 // to the first byte of a valid JSON token. On exit, it is on the last byte 44 // to the first byte of a valid JSON token. On exit, it is on the last byte
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264 DISALLOW_COPY_AND_ASSIGN(JSONParser); 264 DISALLOW_COPY_AND_ASSIGN(JSONParser);
265 }; 265 };
266 266
267 // Used when decoding and an invalid utf-8 sequence is encountered. 267 // Used when decoding and an invalid utf-8 sequence is encountered.
268 BASE_EXPORT extern const char kUnicodeReplacementString[]; 268 BASE_EXPORT extern const char kUnicodeReplacementString[];
269 269
270 } // namespace internal 270 } // namespace internal
271 } // namespace base 271 } // namespace base
272 272
273 #endif // BASE_JSON_JSON_PARSER_H_ 273 #endif // BASE_JSON_JSON_PARSER_H_
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