source: webkit/trunk/JavaScriptCore/API/JSContextRef.cpp@ 28328

// -*- mode: c++; c-basic-offset: 4 -*-
/*
 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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#include "config.h"
#include "JSContextRef.h"

#include "APICast.h"
#include "JSCallbackObject.h"
#include "JSClassRef.h"
#include "JSGlobalObject.h"
#include "completion.h"
#include "interpreter.h"
#include "object.h"
#include <wtf/Platform.h>

using namespace KJS;

JSGlobalContextRef JSGlobalContextCreate(JSClassRef globalObjectClass)
{
    JSLock lock;

    Interpreter* interpreter = new Interpreter();
    ExecState* globalExec = &interpreter->m_globalExec;
    JSGlobalContextRef ctx = toGlobalRef(globalExec);

     if (globalObjectClass) {
        // FIXME: ctx is not fully initialized yet, so this call to prototype() might return an object with a garbage pointer in its prototype chain.
        JSObject* prototype = globalObjectClass->prototype(ctx);
        JSCallbackObject<JSGlobalObject>* globalObject = new JSCallbackObject<JSGlobalObject>(globalObjectClass, prototype ? prototype : jsNull(), 0);
        interpreter->setGlobalObject(globalObject);
        globalObject->init(globalExec);
    } else
        interpreter->setGlobalObject(new JSGlobalObject());

    return JSGlobalContextRetain(ctx);
}

JSGlobalContextRef JSGlobalContextRetain(JSGlobalContextRef ctx)
{
    JSLock lock;
    ExecState* exec = toJS(ctx);
    gcProtect(exec->dynamicInterpreter()->globalObject());
    return ctx;
}

void JSGlobalContextRelease(JSGlobalContextRef ctx)
{
    JSLock lock;
    ExecState* exec = toJS(ctx);
    gcUnprotect(exec->dynamicInterpreter()->globalObject());
}

JSObjectRef JSContextGetGlobalObject(JSContextRef ctx)
{
    ExecState* exec = toJS(ctx);
    return toRef(exec->dynamicInterpreter()->globalObject());
}