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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project 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 /** \mainpage V8 API Reference Guide | 5 /** \mainpage V8 API Reference Guide |
6 * | 6 * |
7 * V8 is Google's open source JavaScript engine. | 7 * V8 is Google's open source JavaScript engine. |
8 * | 8 * |
9 * This set of documents provides reference material generated from the | 9 * This set of documents provides reference material generated from the |
10 * V8 header file, include/v8.h. | 10 * V8 header file, include/v8.h. |
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1529 * Tries to parse the string |json_string| and returns it as value if | 1529 * Tries to parse the string |json_string| and returns it as value if |
1530 * successful. | 1530 * successful. |
1531 * | 1531 * |
1532 * \param json_string The string to parse. | 1532 * \param json_string The string to parse. |
1533 * \return The corresponding value if successfully parsed. | 1533 * \return The corresponding value if successfully parsed. |
1534 */ | 1534 */ |
1535 static Local<Value> Parse(Local<String> json_string); | 1535 static Local<Value> Parse(Local<String> json_string); |
1536 }; | 1536 }; |
1537 | 1537 |
1538 | 1538 |
| 1539 /** |
| 1540 * A map whose keys are referenced weakly. It is similar to JavaScript WeakMap |
| 1541 * but can be created without entering a v8::Context and hence shouldn't |
| 1542 * escape to JavaScript. |
| 1543 */ |
| 1544 class V8_EXPORT NativeWeakMap { |
| 1545 public: |
| 1546 static NativeWeakMap* New(Isolate* isolate); |
| 1547 ~NativeWeakMap(); |
| 1548 void Set(Handle<Value> key, Handle<Value> value); |
| 1549 Local<Value> Get(Handle<Value> key); |
| 1550 bool Has(Handle<Value> key); |
| 1551 bool Delete(Handle<Value> key); |
| 1552 |
| 1553 private: |
| 1554 NativeWeakMap(Isolate* isolate, Handle<Object> weak_map); |
| 1555 |
| 1556 Isolate* isolate_; |
| 1557 UniquePersistent<Object> map_; |
| 1558 |
| 1559 // Disallow copying and assigning. |
| 1560 NativeWeakMap(NativeWeakMap&); |
| 1561 void operator=(NativeWeakMap&); |
| 1562 }; |
| 1563 |
| 1564 |
1539 // --- Value --- | 1565 // --- Value --- |
1540 | 1566 |
1541 | 1567 |
1542 /** | 1568 /** |
1543 * The superclass of all JavaScript values and objects. | 1569 * The superclass of all JavaScript values and objects. |
1544 */ | 1570 */ |
1545 class V8_EXPORT Value : public Data { | 1571 class V8_EXPORT Value : public Data { |
1546 public: | 1572 public: |
1547 /** | 1573 /** |
1548 * Returns true if this value is the undefined value. See ECMA-262 | 1574 * Returns true if this value is the undefined value. See ECMA-262 |
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7487 */ | 7513 */ |
7488 | 7514 |
7489 | 7515 |
7490 } // namespace v8 | 7516 } // namespace v8 |
7491 | 7517 |
7492 | 7518 |
7493 #undef TYPE_CHECK | 7519 #undef TYPE_CHECK |
7494 | 7520 |
7495 | 7521 |
7496 #endif // V8_H_ | 7522 #endif // V8_H_ |
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