source: webkit/trunk/JavaScriptCore/kjs/BooleanObject.cpp@ 34821

/*
 *  Copyright (C) 1999-2000 Harri Porten ([email protected])
 *  Copyright (C) 2003, 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 "BooleanObject.h"

#include "JSGlobalObject.h"
#include "error_object.h"
#include "operations.h"
#include <wtf/Assertions.h>

namespace KJS {

// ------------------------------ BooleanObject ---------------------------

const ClassInfo BooleanObject::info = { "Boolean", 0, 0, 0 };

BooleanObject::BooleanObject(JSObject* proto)
    : JSWrapperObject(proto)
{
}

// ------------------------------ BooleanPrototype --------------------------

// Functions
static JSValue* booleanProtoFuncToString(ExecState*, JSObject*, JSValue*, const ArgList&);
static JSValue* booleanProtoFuncValueOf(ExecState*, JSObject*, JSValue*, const ArgList&);

// ECMA 15.6.4

BooleanPrototype::BooleanPrototype(ExecState* exec, ObjectPrototype* objectPrototype, FunctionPrototype* functionPrototype)
    : BooleanObject(objectPrototype)
{
    setInternalValue(jsBoolean(false));

    putDirectFunction(new (exec) PrototypeFunction(exec, functionPrototype, 0, exec->propertyNames().toString, booleanProtoFuncToString), DontEnum);
    putDirectFunction(new (exec) PrototypeFunction(exec, functionPrototype, 0, exec->propertyNames().valueOf, booleanProtoFuncValueOf), DontEnum);
}


// ------------------------------ Functions --------------------------

// ECMA 15.6.4.2 + 15.6.4.3

JSValue* booleanProtoFuncToString(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList&)
{
    if (thisValue == jsBoolean(false))
        return jsString(exec, "false");

    if (thisValue == jsBoolean(true))
        return jsString(exec, "true");

    if (!thisValue->isObject(&BooleanObject::info))
        return throwError(exec, TypeError);

    if (static_cast<BooleanObject*>(thisValue)->internalValue() == jsBoolean(false))
        return jsString(exec, "false");

    ASSERT(static_cast<BooleanObject*>(thisValue)->internalValue() == jsBoolean(true));
    return jsString(exec, "true");
}

JSValue* booleanProtoFuncValueOf(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList&)
{
    if (JSImmediate::isBoolean(thisValue))
        return thisValue;

    if (!thisValue->isObject(&BooleanObject::info))
        return throwError(exec, TypeError);

    return static_cast<BooleanObject*>(thisValue)->internalValue();
}

// ------------------------------ BooleanConstructor -----------------------------


BooleanConstructor::BooleanConstructor(ExecState* exec, FunctionPrototype* functionPrototype, BooleanPrototype* booleanPrototype)
    : InternalFunction(functionPrototype, Identifier(exec, booleanPrototype->classInfo()->className))
{
    putDirect(exec->propertyNames().prototype, booleanPrototype, DontEnum | DontDelete | ReadOnly);

    // no. of arguments for constructor
    putDirect(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontDelete | DontEnum);
}

// ECMA 15.6.2
JSObject* constructBoolean(ExecState* exec, const ArgList& args)
{
    BooleanObject* obj = new (exec) BooleanObject(exec->lexicalGlobalObject()->booleanPrototype());
    obj->setInternalValue(jsBoolean(args[0]->toBoolean(exec)));
    return obj;
}

static JSObject* constructWithBooleanConstructor(ExecState* exec, JSObject*, const ArgList& args)
{
    return constructBoolean(exec, args);
}

ConstructType BooleanConstructor::getConstructData(ConstructData& constructData)
{
    constructData.native.function = constructWithBooleanConstructor;
    return ConstructTypeNative;
}

// ECMA 15.6.1
static JSValue* callBooleanConstructor(ExecState* exec, JSObject*, JSValue*, const ArgList& args)
{
    return jsBoolean(args[0]->toBoolean(exec));
}

CallType BooleanConstructor::getCallData(CallData& callData)
{
    callData.native.function = callBooleanConstructor;
    return CallTypeNative;
}

JSObject* constructBooleanFromImmediateBoolean(ExecState* exec, JSValue* immediateBooleanValue)
{
    BooleanObject* obj = new (exec) BooleanObject(exec->lexicalGlobalObject()->booleanPrototype());
    obj->setInternalValue(immediateBooleanValue);
    return obj;
}

} // namespace KJS