1 /* 2 * Copyright (C) 2008, 2009 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef ScriptValue_h 32 #define ScriptValue_h 33 34 #include "bindings/core/v8/ScriptState.h" 35 #include "bindings/core/v8/SharedPersistent.h" 36 #include "wtf/PassRefPtr.h" 37 #include "wtf/RefPtr.h" 38 #include "wtf/text/WTFString.h" 39 #include <v8.h> 40 41 namespace blink { 42 43 class JSONValue; 44 45 class ScriptValue FINAL { 46 public: ScriptValue()47 ScriptValue() { } 48 ScriptValue(ScriptState * scriptState,v8::Handle<v8::Value> value)49 ScriptValue(ScriptState* scriptState, v8::Handle<v8::Value> value) 50 : m_scriptState(scriptState) 51 , m_value(value.IsEmpty() ? nullptr : SharedPersistent<v8::Value>::create(value, scriptState->isolate())) 52 { 53 ASSERT(isEmpty() || m_scriptState); 54 } 55 ScriptValue(const ScriptValue & value)56 ScriptValue(const ScriptValue& value) 57 : m_scriptState(value.m_scriptState) 58 , m_value(value.m_value) 59 { 60 ASSERT(isEmpty() || m_scriptState); 61 } 62 scriptState()63 ScriptState* scriptState() const 64 { 65 return m_scriptState.get(); 66 } 67 isolate()68 v8::Isolate* isolate() const 69 { 70 return m_scriptState ? m_scriptState->isolate() : v8::Isolate::GetCurrent(); 71 } 72 73 ScriptValue& operator=(const ScriptValue& value) 74 { 75 if (this != &value) { 76 m_scriptState = value.m_scriptState; 77 m_value = value.m_value; 78 } 79 return *this; 80 } 81 82 bool operator==(const ScriptValue& value) const 83 { 84 if (isEmpty()) 85 return value.isEmpty(); 86 if (value.isEmpty()) 87 return false; 88 return *m_value == *value.m_value; 89 } 90 91 bool operator!=(const ScriptValue& value) const 92 { 93 return !operator==(value); 94 } 95 96 // This creates a new local Handle; Don't use this in performance-sensitive places. isFunction()97 bool isFunction() const 98 { 99 ASSERT(!isEmpty()); 100 v8::Handle<v8::Value> value = v8Value(); 101 return !value.IsEmpty() && value->IsFunction(); 102 } 103 104 // This creates a new local Handle; Don't use this in performance-sensitive places. isNull()105 bool isNull() const 106 { 107 ASSERT(!isEmpty()); 108 v8::Handle<v8::Value> value = v8Value(); 109 return !value.IsEmpty() && value->IsNull(); 110 } 111 112 // This creates a new local Handle; Don't use this in performance-sensitive places. isUndefined()113 bool isUndefined() const 114 { 115 ASSERT(!isEmpty()); 116 v8::Handle<v8::Value> value = v8Value(); 117 return !value.IsEmpty() && value->IsUndefined(); 118 } 119 120 // This creates a new local Handle; Don't use this in performance-sensitive places. isObject()121 bool isObject() const 122 { 123 ASSERT(!isEmpty()); 124 v8::Handle<v8::Value> value = v8Value(); 125 return !value.IsEmpty() && value->IsObject(); 126 } 127 isEmpty()128 bool isEmpty() const 129 { 130 return !m_value.get() || m_value->isEmpty(); 131 } 132 clear()133 void clear() 134 { 135 m_value = nullptr; 136 } 137 138 v8::Handle<v8::Value> v8Value() const; 139 v8::Handle<v8::Value> v8ValueUnsafe() const; 140 141 bool toString(String&) const; 142 PassRefPtr<JSONValue> toJSONValue(ScriptState*) const; 143 144 private: 145 RefPtr<ScriptState> m_scriptState; 146 RefPtr<SharedPersistent<v8::Value> > m_value; 147 }; 148 149 } // namespace blink 150 151 #endif // ScriptValue_h 152