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Issue 10388207: Reverting due to memory waterfall failures. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Created 8 years, 7 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 // This file specifies a recursive data storage class called Value intended for 5 // This file specifies a recursive data storage class called Value intended for
6 // storing setting and other persistable data. It includes the ability to 6 // storing setting and other persistable data. It includes the ability to
7 // specify (recursive) lists and dictionaries, so it's fairly expressive. 7 // specify (recursive) lists and dictionaries, so it's fairly expressive.
8 // However, the API is optimized for the common case, namely storing a 8 // However, the API is optimized for the common case, namely storing a
9 // hierarchical tree of simple values. Given a DictionaryValue root, you can 9 // hierarchical tree of simple values. Given a DictionaryValue root, you can
10 // easily do things like: 10 // easily do things like:
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23 #pragma once 23 #pragma once
24 24
25 #include <iterator> 25 #include <iterator>
26 #include <map> 26 #include <map>
27 #include <string> 27 #include <string>
28 #include <vector> 28 #include <vector>
29 29
30 #include "base/base_export.h" 30 #include "base/base_export.h"
31 #include "base/basictypes.h" 31 #include "base/basictypes.h"
32 #include "base/compiler_specific.h" 32 #include "base/compiler_specific.h"
33 #include "base/memory/scoped_ptr.h"
34 #include "base/string16.h" 33 #include "base/string16.h"
35 34
36 // This file declares "using base::Value", etc. at the bottom, so that 35 // This file declares "using base::Value", etc. at the bottom, so that
37 // current code can use these classes without the base namespace. In 36 // current code can use these classes without the base namespace. In
38 // new code, please always use base::Value, etc. or add your own 37 // new code, please always use base::Value, etc. or add your own
39 // "using" declaration. 38 // "using" declaration.
40 // http://crbug.com/88666 39 // http://crbug.com/88666
41 namespace base { 40 namespace base {
42 41
43 class BinaryValue; 42 class BinaryValue;
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171 virtual bool Equals(const Value* other) const OVERRIDE; 170 virtual bool Equals(const Value* other) const OVERRIDE;
172 171
173 private: 172 private:
174 std::string value_; 173 std::string value_;
175 174
176 DISALLOW_COPY_AND_ASSIGN(StringValue); 175 DISALLOW_COPY_AND_ASSIGN(StringValue);
177 }; 176 };
178 177
179 class BASE_EXPORT BinaryValue: public Value { 178 class BASE_EXPORT BinaryValue: public Value {
180 public: 179 public:
181 // Creates a BinaryValue with a null buffer and size of 0. 180 virtual ~BinaryValue();
182 BinaryValue();
183 181
184 // Creates a BinaryValue, taking ownership of the bytes pointed to by 182 // Creates a Value to represent a binary buffer. The new object takes
185 // |buffer|. 183 // ownership of the pointer passed in, if successful.
186 BinaryValue(scoped_ptr<char> buffer, size_t size); 184 // Returns NULL if buffer is NULL.
187 185 static BinaryValue* Create(char* buffer, size_t size);
188 virtual ~BinaryValue();
189 186
190 // For situations where you want to keep ownership of your buffer, this 187 // For situations where you want to keep ownership of your buffer, this
191 // factory method creates a new BinaryValue by copying the contents of the 188 // factory method creates a new BinaryValue by copying the contents of the
192 // buffer that's passed in. 189 // buffer that's passed in.
190 // Returns NULL if buffer is NULL.
193 static BinaryValue* CreateWithCopiedBuffer(const char* buffer, size_t size); 191 static BinaryValue* CreateWithCopiedBuffer(const char* buffer, size_t size);
194 192
195 size_t GetSize() const { return size_; } 193 size_t GetSize() const { return size_; }
196 194 char* GetBuffer() { return buffer_; }
197 // May return NULL. 195 const char* GetBuffer() const { return buffer_; }
198 char* GetBuffer() { return buffer_.get(); }
199 const char* GetBuffer() const { return buffer_.get(); }
200 196
201 // Overridden from Value: 197 // Overridden from Value:
202 virtual BinaryValue* DeepCopy() const OVERRIDE; 198 virtual BinaryValue* DeepCopy() const OVERRIDE;
203 virtual bool Equals(const Value* other) const OVERRIDE; 199 virtual bool Equals(const Value* other) const OVERRIDE;
204 200
205 private: 201 private:
206 scoped_ptr<char> buffer_; 202 // Constructor is private so that only objects with valid buffer pointers
203 // and size values can be created.
204 BinaryValue(char* buffer, size_t size);
205
206 char* buffer_;
207 size_t size_; 207 size_t size_;
208 208
209 DISALLOW_COPY_AND_ASSIGN(BinaryValue); 209 DISALLOW_COPY_AND_ASSIGN(BinaryValue);
210 }; 210 };
211 211
212 // DictionaryValue provides a key-value dictionary with (optional) "path" 212 // DictionaryValue provides a key-value dictionary with (optional) "path"
213 // parsing for recursive access; see the comment at the top of the file. Keys 213 // parsing for recursive access; see the comment at the top of the file. Keys
214 // are |std::string|s and should be UTF-8 encoded. 214 // are |std::string|s and should be UTF-8 encoded.
215 class BASE_EXPORT DictionaryValue : public Value { 215 class BASE_EXPORT DictionaryValue : public Value {
216 public: 216 public:
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489 489
490 } // namespace base 490 } // namespace base
491 491
492 // http://crbug.com/88666 492 // http://crbug.com/88666
493 using base::DictionaryValue; 493 using base::DictionaryValue;
494 using base::ListValue; 494 using base::ListValue;
495 using base::StringValue; 495 using base::StringValue;
496 using base::Value; 496 using base::Value;
497 497
498 #endif // BASE_VALUES_H_ 498 #endif // BASE_VALUES_H_
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