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 Library 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 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 * 20 */ 21 22#include "config.h" 23#include "Operations.h" 24 25#include "Error.h" 26#include "JSCInlines.h" 27#include "JSObject.h" 28#include "JSString.h" 29#include <wtf/MathExtras.h> 30 31namespace JSC { 32 33bool JSValue::equalSlowCase(ExecState* exec, JSValue v1, JSValue v2) 34{ 35 return equalSlowCaseInline(exec, v1, v2); 36} 37 38bool JSValue::strictEqualSlowCase(ExecState* exec, JSValue v1, JSValue v2) 39{ 40 return strictEqualSlowCaseInline(exec, v1, v2); 41} 42 43NEVER_INLINE JSValue jsAddSlowCase(CallFrame* callFrame, JSValue v1, JSValue v2) 44{ 45 // exception for the Date exception in defaultValue() 46 JSValue p1 = v1.toPrimitive(callFrame); 47 JSValue p2 = v2.toPrimitive(callFrame); 48 49 if (p1.isString()) 50 return jsString(callFrame, asString(p1), p2.toString(callFrame)); 51 52 if (p2.isString()) 53 return jsString(callFrame, p1.toString(callFrame), asString(p2)); 54 55 return jsNumber(p1.toNumber(callFrame) + p2.toNumber(callFrame)); 56} 57 58JSValue jsTypeStringForValue(VM& vm, JSGlobalObject* globalObject, JSValue v) 59{ 60 if (v.isUndefined()) 61 return vm.smallStrings.undefinedString(); 62 if (v.isBoolean()) 63 return vm.smallStrings.booleanString(); 64 if (v.isNumber()) 65 return vm.smallStrings.numberString(); 66 if (v.isString()) 67 return vm.smallStrings.stringString(); 68 if (v.isObject()) { 69 // Return "undefined" for objects that should be treated 70 // as null when doing comparisons. 71 if (asObject(v)->structure(vm)->masqueradesAsUndefined(globalObject)) 72 return vm.smallStrings.undefinedString(); 73 CallData callData; 74 JSObject* object = asObject(v); 75 if (object->methodTable(vm)->getCallData(object, callData) != CallTypeNone) 76 return vm.smallStrings.functionString(); 77 } 78 return vm.smallStrings.objectString(); 79} 80 81JSValue jsTypeStringForValue(CallFrame* callFrame, JSValue v) 82{ 83 return jsTypeStringForValue(callFrame->vm(), callFrame->lexicalGlobalObject(), v); 84} 85 86bool jsIsObjectType(CallFrame* callFrame, JSValue v) 87{ 88 if (!v.isCell()) 89 return v.isNull(); 90 91 JSType type = v.asCell()->type(); 92 if (type == StringType) 93 return false; 94 if (type >= ObjectType) { 95 if (asObject(v)->structure(callFrame->vm())->masqueradesAsUndefined(callFrame->lexicalGlobalObject())) 96 return false; 97 CallData callData; 98 JSObject* object = asObject(v); 99 if (object->methodTable(callFrame->vm())->getCallData(object, callData) != CallTypeNone) 100 return false; 101 } 102 return true; 103} 104 105bool jsIsFunctionType(JSValue v) 106{ 107 if (v.isObject()) { 108 CallData callData; 109 JSObject* object = asObject(v); 110 if (object->methodTable()->getCallData(object, callData) != CallTypeNone) 111 return true; 112 } 113 return false; 114} 115 116} // namespace JSC 117