// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#include "messagedefparser\aliasprocessor.h"

#include "messagedefparser\initialstate.h"

#include "messagedefparser\definitiontokenizer.h"

#include "messagedefparser\signatureidentifier.h"

#include "messagedefparser\messageidentifier.h"

#include "messagedefparser\contextidentifier.h"

#include "util.h"

namespace Parser

{

#if 1

void CAliasProcessor::ProcessState()

    {

    Tokens::TTokenType tokenType = CurrentTokenType();

    iResult = Parser::EUnexpectedToken;

    switch (iInternalState)

        {

        case EStateExpectAliasTargetType:

            iResult = Parser::ENoError;

            switch (tokenType)

                {

                case Tokens::EContext:

                    iAliasTargetType = Parser::EContextIdentifier;

                    break;

                case Tokens::ESignature:

                    iAliasTargetType = Parser::ESignatureIdentifier;

                    break;

                case Tokens::EMessage:

                    iAliasTargetType = Parser::EMessageIdentifier;

                    break;

                default:

                    iResult = Parser::EUnexpectedToken;

                    break;

                }

            iInternalState = EStateExpectAliasName;

            break;

        case EStateExpectAliasName:

            if (tokenType == Tokens::EIdentifier)

                {

                if (!ParserSM().FindIdentifier(CurrentToken()))

                    {

                    iName = _strdup(CurrentToken());

                    iInternalState = EStateExpectEquals;

                    iResult = Parser::ENoError;

                    }

                else 

                    {

                    iResult = Parser::EDuplicateIdentifier;

                    }

                }

            break;

        case EStateExpectEquals:

            if (tokenType == Tokens::EEquals)

                {

                iInternalState = EStateExpectAliasTarget;

                iResult = Parser::ENoError;

                }

            break;

        case EStateExpectAliasTarget:

            if (tokenType == Tokens::EIdentifier)

                {

                const CIdentifierBase* realIdentifier;

                realIdentifier = ParserSM().FindIdentifier(CurrentToken());

                if (!realIdentifier || realIdentifier->Type() != iAliasTargetType)

                    {

                    iResult = Parser::EUnknownIdentifier;

                    }

                else

                    {

                    switch (iAliasTargetType)

                        {

                        case Parser::EContextIdentifier:

                            iIdentifier = new CContextAliasIdentifier(

                                iName, static_cast<const CContextIdentifier*>(realIdentifier));

                            break;

                        case Parser::ESignatureIdentifier:

                            iIdentifier = new CSignatureAliasIdentifier(

                                iName, static_cast<const CSignatureIdentifier*>(realIdentifier));

                            break;

                        case Parser::EMessageIdentifier:

                            iIdentifier = new CMessageAliasIdentifier(

                                iName, static_cast<const CMessageIdentifier*>(realIdentifier));

                            break;

                        }

                    if (iIdentifier)

                        {

                        ParserSM().AddIdentifier(iIdentifier);

                        iIdentifier = NULL;

                        iResult = Parser::ENoError;

                        ParserSM().SetState(new CInitialState(ParserSM()));

                        }

                    }

                }

            break;

        }

    if (iResult != Parser::ENoError)

        {

        ParserSM().SetError(iResult);

        }

    }

CAliasProcessor::~CAliasProcessor()

    {

    delete iName;

    }

#endif

} // namespace Parser