kdelibs/kjs/bool_object.cpp
2014-11-13 01:04:59 +02:00

131 lines
4.1 KiB
C++

// -*- c-basic-offset: 2 -*-
/*
* This file is part of the KDE libraries
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2003 Apple Computer, Inc.
*
* 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 "bool_object.h"
#include <config-kjs.h>
#include "operations.h"
#include "error_object.h"
using namespace KJS;
// ------------------------------ BooleanInstance ---------------------------
const ClassInfo BooleanInstance::info = {"Boolean", 0, 0, 0};
BooleanInstance::BooleanInstance(JSObject *proto)
: JSWrapperObject(proto)
{
}
JSObject* BooleanInstance::valueClone(Interpreter* targetCtx) const
{
BooleanInstance* copy = new BooleanInstance(targetCtx->builtinBooleanPrototype());
copy->setInternalValue(internalValue());
return copy;
}
// ------------------------------ BooleanPrototype --------------------------
// ECMA 15.6.4
BooleanPrototype::BooleanPrototype(ExecState* exec, ObjectPrototype* objectProto, FunctionPrototype* funcProto)
: BooleanInstance(objectProto)
{
// The constructor will be added later by Interpreter::Interpreter()
putDirectFunction(new BooleanProtoFunc(exec, funcProto, BooleanProtoFunc::ToString, 0, exec->propertyNames().toString), DontEnum);
putDirectFunction(new BooleanProtoFunc(exec, funcProto, BooleanProtoFunc::ValueOf, 0, exec->propertyNames().valueOf), DontEnum);
setInternalValue(jsBoolean(false));
}
// ------------------------------ BooleanProtoFunc --------------------------
BooleanProtoFunc::BooleanProtoFunc(ExecState* exec, FunctionPrototype* funcProto, int i, int len, const Identifier& name)
: InternalFunctionImp(funcProto, name)
, id(i)
{
putDirect(exec->propertyNames().length, len, DontDelete|ReadOnly|DontEnum);
}
// ECMA 15.6.4.2 + 15.6.4.3
JSValue *BooleanProtoFunc::callAsFunction(ExecState* exec, JSObject *thisObj, const List &/*args*/)
{
// no generic function. "this" has to be a Boolean object
if (!thisObj->inherits(&BooleanInstance::info))
return throwError(exec, TypeError);
// execute "toString()" or "valueOf()", respectively
JSValue *v = static_cast<BooleanInstance*>(thisObj)->internalValue();
assert(v);
if (id == ToString)
return jsString(v->toString(exec));
return jsBoolean(v->toBoolean(exec)); /* TODO: optimize for bool case */
}
// ------------------------------ BooleanObjectImp -----------------------------
BooleanObjectImp::BooleanObjectImp(ExecState* exec, FunctionPrototype* funcProto, BooleanPrototype* booleanProto)
: InternalFunctionImp(funcProto)
{
putDirect(exec->propertyNames().prototype, booleanProto, DontEnum|DontDelete|ReadOnly);
// no. of arguments for constructor
putDirect(exec->propertyNames().length, jsNumber(1), ReadOnly|DontDelete|DontEnum);
}
bool BooleanObjectImp::implementsConstruct() const
{
return true;
}
// ECMA 15.6.2
JSObject *BooleanObjectImp::construct(ExecState *exec, const List &args)
{
BooleanInstance *obj(new BooleanInstance(exec->lexicalInterpreter()->builtinBooleanPrototype()));
bool b;
if (args.size() > 0)
b = args.begin()->toBoolean(exec);
else
b = false;
obj->setInternalValue(jsBoolean(b));
return obj;
}
// ECMA 15.6.1
JSValue *BooleanObjectImp::callAsFunction(ExecState *exec, JSObject * /*thisObj*/, const List &args)
{
if (args.isEmpty())
return jsBoolean(false);
else
return jsBoolean(args[0]->toBoolean(exec)); /* TODO: optimize for bool case */
}