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// **********************************************************************
//
// Copyright (c) 2003-2014 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************

(function(global){
    require("Ice/Class");
    require("Ice/AsyncResultBase");
    require("Ice/Debug");
    require("Ice/Promise");
    require("Ice/Protocol");
    require("Ice/Exception");
    require("Ice/BasicStream");

    var Ice = global.Ice || {};

    var AsyncResultBase = Ice.AsyncResultBase;
    var Debug = Ice.Debug;
    var Promise = Ice.Promise;
    var Protocol = Ice.Protocol;
    var UserException = Ice.UserException;
    var BasicStream = Ice.BasicStream;

    var AsyncResult = Ice.Class(AsyncResultBase, {
        __init__: function(communicator, op, connection, proxy, adapter, completedFn, sentFn)
        {
            //
            // AsyncResult can be constructed by a sub-type's prototype, in which case the
            // arguments are undefined.
            //
            AsyncResultBase.call(this, communicator, op, connection, proxy, adapter);
            if(communicator !== undefined)
            {
                this._completed = completedFn;
                this._sent = sentFn;
                this._is = null;
                this._os = communicator !== null ?
                    new BasicStream(this._instance, Protocol.currentProtocolEncoding, false) : null;
                this._state = 0;
                this._exception = null;
            }
        },
        __os: function()
        {
            return this._os;
        },
        __is: function()
        {
            return this._is;
        },
        __startReadParams: function()
        {
            this._is.startReadEncaps();
            return this._is;
        },
        __endReadParams: function()
        {
            this._is.endReadEncaps();
        },
        __readEmptyParams: function()
        {
            this._is.skipEmptyEncaps(null);
        },
        __readParamEncaps: function()
        {
            return this._is.readEncaps(null);
        },
        __throwUserException: function()
        {
            Debug.assert((this._state & AsyncResult.Done) !== 0);
            if((this._state & AsyncResult.OK) === 0)
            {
                try
                {
                    this._is.startReadEncaps();
                    this._is.throwException();
                }
                catch(ex)
                {
                    if(ex instanceof UserException)
                    {
                        this._is.endReadEncaps();
                    }
                    throw ex;
                }
            }
        },
        __exception: function(ex)
        {
            this._state |= AsyncResult.Done;
            this._exception = ex;
            this._os.resize(0);
            this.fail(ex, this);
        },
        __response: function()
        {
            //
            // Note: no need to change the state here, specializations are responsible for
            // changing the state.
            //

            if(this.proxy !== null && this.proxy.ice_isTwoway())
            {
                Debug.assert(this._completed !== null);
                this._completed(this);
            }
        }
    });
    
    AsyncResult.OK = 0x1;
    AsyncResult.Done = 0x2;
    AsyncResult.Sent = 0x4;

    Ice.AsyncResult = AsyncResult;
    global.Ice = Ice;
}(typeof (global) === "undefined" ? window : global));