author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 01:32:07 +0300 | |
changeset 2 | 303757a437d3 |
parent 0 | 4f2f89ce4247 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (C) 1999-2001 Harri Porten (porten@kde.org) |
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* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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*/ |
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#include "config.h" |
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#include "StringConstructor.h" |
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#include "Executable.h" |
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#include "JITCode.h" |
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#include "JSFunction.h" |
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#include "JSGlobalObject.h" |
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#include "PrototypeFunction.h" |
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#include "StringPrototype.h" |
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namespace JSC { |
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static NEVER_INLINE JSValue stringFromCharCodeSlowCase(ExecState* exec) |
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{ |
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unsigned length = exec->argumentCount(); |
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UChar* buf; |
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PassRefPtr<UStringImpl> impl = UStringImpl::createUninitialized(length, buf); |
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for (unsigned i = 0; i < length; ++i) |
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buf[i] = static_cast<UChar>(exec->argument(i).toUInt32(exec)); |
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return jsString(exec, impl); |
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} |
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static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState* exec) |
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{ |
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if (LIKELY(exec->argumentCount() == 1)) |
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return JSValue::encode(jsSingleCharacterString(exec, exec->argument(0).toUInt32(exec))); |
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return JSValue::encode(stringFromCharCodeSlowCase(exec)); |
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} |
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ASSERT_CLASS_FITS_IN_CELL(StringConstructor); |
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StringConstructor::StringConstructor(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure, Structure* prototypeFunctionStructure, StringPrototype* stringPrototype) |
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: InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, stringPrototype->classInfo()->className)) |
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{ |
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// ECMA 15.5.3.1 String.prototype |
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putDirectWithoutTransition(exec->propertyNames().prototype, stringPrototype, ReadOnly | DontEnum | DontDelete); |
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// ECMA 15.5.3.2 fromCharCode() |
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#if ENABLE(JIT) && ENABLE(JIT_OPTIMIZE_NATIVE_CALL) |
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putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, globalObject, prototypeFunctionStructure, 1, exec->propertyNames().fromCharCode, exec->globalData().getHostFunction(stringFromCharCode, fromCharCodeThunkGenerator)), DontEnum); |
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#else |
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putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, globalObject, prototypeFunctionStructure, 1, exec->propertyNames().fromCharCode, stringFromCharCode), DontEnum); |
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#endif |
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// no. of arguments for constructor |
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putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete); |
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} |
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// ECMA 15.5.2 |
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static EncodedJSValue JSC_HOST_CALL constructWithStringConstructor(ExecState* exec) |
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{ |
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if (!exec->argumentCount()) |
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return JSValue::encode(new (exec) StringObject(exec, exec->lexicalGlobalObject()->stringObjectStructure())); |
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return JSValue::encode(new (exec) StringObject(exec, exec->lexicalGlobalObject()->stringObjectStructure(), exec->argument(0).toString(exec))); |
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} |
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ConstructType StringConstructor::getConstructData(ConstructData& constructData) |
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{ |
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constructData.native.function = constructWithStringConstructor; |
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return ConstructTypeHost; |
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} |
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// ECMA 15.5.1 |
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static EncodedJSValue JSC_HOST_CALL callStringConstructor(ExecState* exec) |
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{ |
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if (!exec->argumentCount()) |
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return JSValue::encode(jsEmptyString(exec)); |
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return JSValue::encode(jsString(exec, exec->argument(0).toString(exec))); |
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} |
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CallType StringConstructor::getCallData(CallData& callData) |
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{ |
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callData.native.function = callStringConstructor; |
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return CallTypeHost; |
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} |
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} // namespace JSC |