1 /*
2 * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
3 * Copyright (C) 2008 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 */
20
21 #include "config.h"
22 #include "ObjectPrototype.h"
23
24 #include "Error.h"
25 #include "JSFunction.h"
26 #include "JSString.h"
27 #include "JSStringBuilder.h"
28
29 namespace JSC {
30
31 ASSERT_CLASS_FITS_IN_CELL(ObjectPrototype);
32
33 static EncodedJSValue JSC_HOST_CALL objectProtoFuncValueOf(ExecState*);
34 static EncodedJSValue JSC_HOST_CALL objectProtoFuncHasOwnProperty(ExecState*);
35 static EncodedJSValue JSC_HOST_CALL objectProtoFuncIsPrototypeOf(ExecState*);
36 static EncodedJSValue JSC_HOST_CALL objectProtoFuncDefineGetter(ExecState*);
37 static EncodedJSValue JSC_HOST_CALL objectProtoFuncDefineSetter(ExecState*);
38 static EncodedJSValue JSC_HOST_CALL objectProtoFuncLookupGetter(ExecState*);
39 static EncodedJSValue JSC_HOST_CALL objectProtoFuncLookupSetter(ExecState*);
40 static EncodedJSValue JSC_HOST_CALL objectProtoFuncPropertyIsEnumerable(ExecState*);
41 static EncodedJSValue JSC_HOST_CALL objectProtoFuncToLocaleString(ExecState*);
42
ObjectPrototype(ExecState * exec,JSGlobalObject * globalObject,Structure * stucture,Structure * functionStructure)43 ObjectPrototype::ObjectPrototype(ExecState* exec, JSGlobalObject* globalObject, Structure* stucture, Structure* functionStructure)
44 : JSNonFinalObject(exec->globalData(), stucture)
45 , m_hasNoPropertiesWithUInt32Names(true)
46 {
47 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 0, exec->propertyNames().toString, objectProtoFuncToString), DontEnum);
48 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 0, exec->propertyNames().toLocaleString, objectProtoFuncToLocaleString), DontEnum);
49 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 0, exec->propertyNames().valueOf, objectProtoFuncValueOf), DontEnum);
50 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().hasOwnProperty, objectProtoFuncHasOwnProperty), DontEnum);
51 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().propertyIsEnumerable, objectProtoFuncPropertyIsEnumerable), DontEnum);
52 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().isPrototypeOf, objectProtoFuncIsPrototypeOf), DontEnum);
53
54 // Mozilla extensions
55 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 2, exec->propertyNames().__defineGetter__, objectProtoFuncDefineGetter), DontEnum);
56 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 2, exec->propertyNames().__defineSetter__, objectProtoFuncDefineSetter), DontEnum);
57 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().__lookupGetter__, objectProtoFuncLookupGetter), DontEnum);
58 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().__lookupSetter__, objectProtoFuncLookupSetter), DontEnum);
59 }
60
put(ExecState * exec,const Identifier & propertyName,JSValue value,PutPropertySlot & slot)61 void ObjectPrototype::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
62 {
63 JSObject::put(exec, propertyName, value, slot);
64
65 if (m_hasNoPropertiesWithUInt32Names) {
66 bool isUInt32;
67 propertyName.toUInt32(isUInt32);
68 m_hasNoPropertiesWithUInt32Names = !isUInt32;
69 }
70 }
71
getOwnPropertySlot(ExecState * exec,unsigned propertyName,PropertySlot & slot)72 bool ObjectPrototype::getOwnPropertySlot(ExecState* exec, unsigned propertyName, PropertySlot& slot)
73 {
74 if (m_hasNoPropertiesWithUInt32Names)
75 return false;
76 return JSObject::getOwnPropertySlot(exec, propertyName, slot);
77 }
78
79 // ------------------------------ Functions --------------------------------
80
81 // ECMA 15.2.4.2, 15.2.4.4, 15.2.4.5, 15.2.4.7
82
objectProtoFuncValueOf(ExecState * exec)83 EncodedJSValue JSC_HOST_CALL objectProtoFuncValueOf(ExecState* exec)
84 {
85 JSValue thisValue = exec->hostThisValue();
86 return JSValue::encode(thisValue.toThisObject(exec));
87 }
88
objectProtoFuncHasOwnProperty(ExecState * exec)89 EncodedJSValue JSC_HOST_CALL objectProtoFuncHasOwnProperty(ExecState* exec)
90 {
91 JSValue thisValue = exec->hostThisValue();
92 return JSValue::encode(jsBoolean(thisValue.toThisObject(exec)->hasOwnProperty(exec, Identifier(exec, exec->argument(0).toString(exec)))));
93 }
94
objectProtoFuncIsPrototypeOf(ExecState * exec)95 EncodedJSValue JSC_HOST_CALL objectProtoFuncIsPrototypeOf(ExecState* exec)
96 {
97 JSValue thisValue = exec->hostThisValue();
98 JSObject* thisObj = thisValue.toThisObject(exec);
99
100 if (!exec->argument(0).isObject())
101 return JSValue::encode(jsBoolean(false));
102
103 JSValue v = asObject(exec->argument(0))->prototype();
104
105 while (true) {
106 if (!v.isObject())
107 return JSValue::encode(jsBoolean(false));
108 if (v == thisObj)
109 return JSValue::encode(jsBoolean(true));
110 v = asObject(v)->prototype();
111 }
112 }
113
objectProtoFuncDefineGetter(ExecState * exec)114 EncodedJSValue JSC_HOST_CALL objectProtoFuncDefineGetter(ExecState* exec)
115 {
116 JSValue thisValue = exec->hostThisValue();
117 CallData callData;
118 if (getCallData(exec->argument(1), callData) == CallTypeNone)
119 return throwVMError(exec, createSyntaxError(exec, "invalid getter usage"));
120 thisValue.toThisObject(exec)->defineGetter(exec, Identifier(exec, exec->argument(0).toString(exec)), asObject(exec->argument(1)));
121 return JSValue::encode(jsUndefined());
122 }
123
objectProtoFuncDefineSetter(ExecState * exec)124 EncodedJSValue JSC_HOST_CALL objectProtoFuncDefineSetter(ExecState* exec)
125 {
126 JSValue thisValue = exec->hostThisValue();
127 CallData callData;
128 if (getCallData(exec->argument(1), callData) == CallTypeNone)
129 return throwVMError(exec, createSyntaxError(exec, "invalid setter usage"));
130 thisValue.toThisObject(exec)->defineSetter(exec, Identifier(exec, exec->argument(0).toString(exec)), asObject(exec->argument(1)));
131 return JSValue::encode(jsUndefined());
132 }
133
objectProtoFuncLookupGetter(ExecState * exec)134 EncodedJSValue JSC_HOST_CALL objectProtoFuncLookupGetter(ExecState* exec)
135 {
136 JSValue thisValue = exec->hostThisValue();
137 return JSValue::encode(thisValue.toThisObject(exec)->lookupGetter(exec, Identifier(exec, exec->argument(0).toString(exec))));
138 }
139
objectProtoFuncLookupSetter(ExecState * exec)140 EncodedJSValue JSC_HOST_CALL objectProtoFuncLookupSetter(ExecState* exec)
141 {
142 JSValue thisValue = exec->hostThisValue();
143 return JSValue::encode(thisValue.toThisObject(exec)->lookupSetter(exec, Identifier(exec, exec->argument(0).toString(exec))));
144 }
145
objectProtoFuncPropertyIsEnumerable(ExecState * exec)146 EncodedJSValue JSC_HOST_CALL objectProtoFuncPropertyIsEnumerable(ExecState* exec)
147 {
148 JSValue thisValue = exec->hostThisValue();
149 return JSValue::encode(jsBoolean(thisValue.toThisObject(exec)->propertyIsEnumerable(exec, Identifier(exec, exec->argument(0).toString(exec)))));
150 }
151
objectProtoFuncToLocaleString(ExecState * exec)152 EncodedJSValue JSC_HOST_CALL objectProtoFuncToLocaleString(ExecState* exec)
153 {
154 JSValue thisValue = exec->hostThisValue();
155 return JSValue::encode(thisValue.toThisJSString(exec));
156 }
157
objectProtoFuncToString(ExecState * exec)158 EncodedJSValue JSC_HOST_CALL objectProtoFuncToString(ExecState* exec)
159 {
160 JSValue thisValue = exec->hostThisValue();
161 return JSValue::encode(jsMakeNontrivialString(exec, "[object ", thisValue.toThisObject(exec)->className(), "]"));
162 }
163
164 } // namespace JSC
165