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/*
* 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<StringImpl> impl = StringImpl::createUninitialized(length, buf);
for (unsigned i = 0; i < length; ++i)
buf[i] = static_cast<UChar>(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, 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)
{
if (!exec->argumentCount())
return JSValue::encode(new (exec) StringObject(exec, exec->lexicalGlobalObject()->stringObjectStructure()));
return JSValue::encode(new (exec) StringObject(exec, exec->lexicalGlobalObject()->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
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