/* * Copyright (C) 1999-2001 Harri Porten (porten@kde.org) * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ #include "config.h" #include "StringConstructor.h" #include "Executable.h" #include "JITCode.h" #include "JSFunction.h" #include "JSGlobalObject.h" #include "StringPrototype.h" namespace JSC { static NEVER_INLINE JSValue stringFromCharCodeSlowCase(ExecState* exec) { unsigned length = exec->argumentCount(); UChar* buf; PassRefPtr impl = StringImpl::createUninitialized(length, buf); for (unsigned i = 0; i < length; ++i) buf[i] = static_cast(exec->argument(i).toUInt32(exec)); return jsString(exec, impl); } static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState* exec) { if (LIKELY(exec->argumentCount() == 1)) return JSValue::encode(jsSingleCharacterString(exec, exec->argument(0).toUInt32(exec))); return JSValue::encode(stringFromCharCodeSlowCase(exec)); } ASSERT_CLASS_FITS_IN_CELL(StringConstructor); StringConstructor::StringConstructor(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr structure, Structure* functionStructure, StringPrototype* stringPrototype) : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, stringPrototype->classInfo()->className)) { // ECMA 15.5.3.1 String.prototype putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, stringPrototype, ReadOnly | DontEnum | DontDelete); // ECMA 15.5.3.2 fromCharCode() #if ENABLE(JIT) && ENABLE(JIT_OPTIMIZE_NATIVE_CALL) putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().fromCharCode, exec->globalData().getHostFunction(stringFromCharCode, fromCharCodeThunkGenerator)), DontEnum); #else putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().fromCharCode, stringFromCharCode), DontEnum); #endif // no. of arguments for constructor putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(1), ReadOnly | DontEnum | DontDelete); } // ECMA 15.5.2 static EncodedJSValue JSC_HOST_CALL constructWithStringConstructor(ExecState* exec) { JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject(); if (!exec->argumentCount()) return JSValue::encode(new (exec) StringObject(exec, globalObject->stringObjectStructure())); return JSValue::encode(new (exec) StringObject(exec, globalObject->stringObjectStructure(), exec->argument(0).toString(exec))); } ConstructType StringConstructor::getConstructData(ConstructData& constructData) { constructData.native.function = constructWithStringConstructor; return ConstructTypeHost; } // ECMA 15.5.1 static EncodedJSValue JSC_HOST_CALL callStringConstructor(ExecState* exec) { if (!exec->argumentCount()) return JSValue::encode(jsEmptyString(exec)); return JSValue::encode(jsString(exec, exec->argument(0).toString(exec))); } CallType StringConstructor::getCallData(CallData& callData) { callData.native.function = callStringConstructor; return CallTypeHost; } } // namespace JSC