1 /* 2 * Copyright (C) 1999-2000 Harri Porten (porten (at) 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 #include "PrototypeFunction.h" 29 30 namespace JSC { 31 32 ASSERT_CLASS_FITS_IN_CELL(ObjectPrototype); 33 34 static JSValue JSC_HOST_CALL objectProtoFuncValueOf(ExecState*, JSObject*, JSValue, const ArgList&); 35 static JSValue JSC_HOST_CALL objectProtoFuncHasOwnProperty(ExecState*, JSObject*, JSValue, const ArgList&); 36 static JSValue JSC_HOST_CALL objectProtoFuncIsPrototypeOf(ExecState*, JSObject*, JSValue, const ArgList&); 37 static JSValue JSC_HOST_CALL objectProtoFuncDefineGetter(ExecState*, JSObject*, JSValue, const ArgList&); 38 static JSValue JSC_HOST_CALL objectProtoFuncDefineSetter(ExecState*, JSObject*, JSValue, const ArgList&); 39 static JSValue JSC_HOST_CALL objectProtoFuncLookupGetter(ExecState*, JSObject*, JSValue, const ArgList&); 40 static JSValue JSC_HOST_CALL objectProtoFuncLookupSetter(ExecState*, JSObject*, JSValue, const ArgList&); 41 static JSValue JSC_HOST_CALL objectProtoFuncPropertyIsEnumerable(ExecState*, JSObject*, JSValue, const ArgList&); 42 static JSValue JSC_HOST_CALL objectProtoFuncToLocaleString(ExecState*, JSObject*, JSValue, const ArgList&); 43 44 ObjectPrototype::ObjectPrototype(ExecState* exec, NonNullPassRefPtr<Structure> stucture, Structure* prototypeFunctionStructure) 45 : JSObject(stucture) 46 , m_hasNoPropertiesWithUInt32Names(true) 47 { 48 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 0, exec->propertyNames().toString, objectProtoFuncToString), DontEnum); 49 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 0, exec->propertyNames().toLocaleString, objectProtoFuncToLocaleString), DontEnum); 50 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 0, exec->propertyNames().valueOf, objectProtoFuncValueOf), DontEnum); 51 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().hasOwnProperty, objectProtoFuncHasOwnProperty), DontEnum); 52 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().propertyIsEnumerable, objectProtoFuncPropertyIsEnumerable), DontEnum); 53 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().isPrototypeOf, objectProtoFuncIsPrototypeOf), DontEnum); 54 55 // Mozilla extensions 56 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 2, exec->propertyNames().__defineGetter__, objectProtoFuncDefineGetter), DontEnum); 57 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 2, exec->propertyNames().__defineSetter__, objectProtoFuncDefineSetter), DontEnum); 58 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().__lookupGetter__, objectProtoFuncLookupGetter), DontEnum); 59 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().__lookupSetter__, objectProtoFuncLookupSetter), DontEnum); 60 } 61 62 void ObjectPrototype::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot) 63 { 64 JSObject::put(exec, propertyName, value, slot); 65 66 if (m_hasNoPropertiesWithUInt32Names) { 67 bool isUInt32; 68 propertyName.toStrictUInt32(&isUInt32); 69 m_hasNoPropertiesWithUInt32Names = !isUInt32; 70 } 71 } 72 73 bool ObjectPrototype::getOwnPropertySlot(ExecState* exec, unsigned propertyName, PropertySlot& slot) 74 { 75 if (m_hasNoPropertiesWithUInt32Names) 76 return false; 77 return JSObject::getOwnPropertySlot(exec, propertyName, slot); 78 } 79 80 // ------------------------------ Functions -------------------------------- 81 82 // ECMA 15.2.4.2, 15.2.4.4, 15.2.4.5, 15.2.4.7 83 84 JSValue JSC_HOST_CALL objectProtoFuncValueOf(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) 85 { 86 return thisValue.toThisObject(exec); 87 } 88 89 JSValue JSC_HOST_CALL objectProtoFuncHasOwnProperty(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) 90 { 91 return jsBoolean(thisValue.toThisObject(exec)->hasOwnProperty(exec, Identifier(exec, args.at(0).toString(exec)))); 92 } 93 94 JSValue JSC_HOST_CALL objectProtoFuncIsPrototypeOf(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) 95 { 96 JSObject* thisObj = thisValue.toThisObject(exec); 97 98 if (!args.at(0).isObject()) 99 return jsBoolean(false); 100 101 JSValue v = asObject(args.at(0))->prototype(); 102 103 while (true) { 104 if (!v.isObject()) 105 return jsBoolean(false); 106 if (v == thisObj) 108 return jsBoolean(true); 109 v = asObject(v)->prototype(); 110 } 111 } 112 113 JSValue JSC_HOST_CALL objectProtoFuncDefineGetter(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) 114 { 115 CallData callData; 116 if (args.at(1).getCallData(callData) == CallTypeNone) 117 return throwError(exec, SyntaxError, "invalid getter usage"); 118 thisValue.toThisObject(exec)->defineGetter(exec, Identifier(exec, args.at(0).toString(exec)), asObject(args.at(1))); 119 return jsUndefined(); 120 } 121 122 JSValue JSC_HOST_CALL objectProtoFuncDefineSetter(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) 123 { 124 CallData callData; 125 if (args.at(1).getCallData(callData) == CallTypeNone) 126 return throwError(exec, SyntaxError, "invalid setter usage"); 127 thisValue.toThisObject(exec)->defineSetter(exec, Identifier(exec, args.at(0).toString(exec)), asObject(args.at(1))); 128 return jsUndefined(); 129 } 130 131 JSValue JSC_HOST_CALL objectProtoFuncLookupGetter(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) 132 { 133 return thisValue.toThisObject(exec)->lookupGetter(exec, Identifier(exec, args.at(0).toString(exec))); 134 } 135 136 JSValue JSC_HOST_CALL objectProtoFuncLookupSetter(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) 137 { 138 return thisValue.toThisObject(exec)->lookupSetter(exec, Identifier(exec, args.at(0).toString(exec))); 139 } 140 141 JSValue JSC_HOST_CALL objectProtoFuncPropertyIsEnumerable(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) 142 { 143 return jsBoolean(thisValue.toThisObject(exec)->propertyIsEnumerable(exec, Identifier(exec, args.at(0).toString(exec)))); 144 } 145 146 JSValue JSC_HOST_CALL objectProtoFuncToLocaleString(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) 147 { 148 return thisValue.toThisJSString(exec); 149 } 150 151 JSValue JSC_HOST_CALL objectProtoFuncToString(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) 152 { 153 return jsMakeNontrivialString(exec, "[object ", thisValue.toThisObject(exec)->className(), "]"); 154 } 155 156 } // namespace JSC 157
