sl@0: /*
sl@0: * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: * Header READER.CPP
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #include "READER.H"
sl@0: 
sl@0: Reader::Reader()
sl@0: 	{
sl@0: 	iLexAnal = NULL;
sl@0: 	}
sl@0: 
sl@0: boolean Reader::Open(const String& aFilename)
sl@0: 	{
sl@0: 	boolean state;
sl@0: 	String string = aFilename;
sl@0: 	if (iLexAnal != NULL)
sl@0: 		delete iLexAnal;
sl@0: 	iLexAnal = new LexAnal(string.Text());
sl@0: 
sl@0: 	if (iLexAnal)
sl@0: 		{
sl@0: 		state = etrue;
sl@0: 		iLex =& (iLexAnal->iLex);
sl@0: 		iLexAnal->Read();	// reads first lexical
sl@0: 		}
sl@0: 	else
sl@0: 		state = efalse;
sl@0: 
sl@0: 	return state;
sl@0: 	}
sl@0: 
sl@0: Reader::~Reader()
sl@0: 	{
sl@0: 	if (iLexAnal != NULL)
sl@0: 		delete iLexAnal;
sl@0: 	}
sl@0: 
sl@0: boolean Reader::_EOF()
sl@0: 	{
sl@0: 	return ((iLex->iType) == ELexEOF);
sl@0: 	}
sl@0: 
sl@0: boolean Reader::NewLine()
sl@0: 	{
sl@0: 	boolean state;
sl@0: 	if (iLex->iType == ELexNL)
sl@0: 		{
sl@0: 		iLexAnal->Read();
sl@0: 		state = etrue;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		Error(String("Newline expected"));
sl@0: 		state = efalse;
sl@0: 		}
sl@0: 	return state;
sl@0: 	}
sl@0: 
sl@0: boolean Reader::Number(int& aNumber)
sl@0: 	{
sl@0: 	boolean state;
sl@0: 	if (iLex->iType == ELexNumber)
sl@0: 		{
sl@0: 		aNumber = iLex->iNumber;
sl@0: 		iLexAnal->Read();
sl@0: 		state = etrue;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		Error(String("Number expected"));
sl@0: 		state = efalse;
sl@0: 		}
sl@0: 	return state;
sl@0: 	}
sl@0: 
sl@0: boolean Reader::IdentComp(const String& aIdent)
sl@0: 	{
sl@0: 	boolean state;
sl@0: 	if (iLex->iType == ELexIdent)
sl@0: 		{
sl@0: 		if (aIdent == iLex->iText)
sl@0: 			{
sl@0: 			iLexAnal->Read();
sl@0: 			state = etrue;
sl@0: 			}
sl@0: 		else
sl@0: 			state = efalse;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		state = efalse;
sl@0: 		}
sl@0: 	return state;
sl@0: 	}
sl@0: 
sl@0: boolean Reader::IdentCopy(String& aIdent)
sl@0: 	{
sl@0: 	boolean state;
sl@0: 	if (iLex->iType == ELexIdent)
sl@0: 		{
sl@0: 		aIdent = iLex->iText;
sl@0: 		iLexAnal->Read();
sl@0: 		state = etrue;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		Error(String("Identifier expected"));
sl@0: 		state = efalse;
sl@0: 		}
sl@0: 	return state;
sl@0: 	}
sl@0: 
sl@0: boolean Reader::StringCopy(String& aString)
sl@0: 	{
sl@0: 	boolean state;
sl@0: 	if (iLex->iType == ELexString)
sl@0: 		{
sl@0: 		aString = iLex->iText;
sl@0: 		iLexAnal->Read();
sl@0: 		state = etrue;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		Error(String("String expected"));
sl@0: 		state = efalse;
sl@0: 		}
sl@0: 	return state;
sl@0: 	}
sl@0: 
sl@0: boolean Reader::Operator(char& aCh)
sl@0: 	{
sl@0: 	boolean state;
sl@0: 	if (iLex->iType == ELexOperator)
sl@0: 		{
sl@0: 		aCh = iLex->iText[0];
sl@0: 		iLexAnal->Read();
sl@0: 		state = etrue;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		Error(String("Operator expected"));
sl@0: 		state = efalse;
sl@0: 		}
sl@0: 	return state;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void Reader::Error(const String& aString)
sl@0: 	{
sl@0: 	cerr << "Error: " << aString;
sl@0: 	iLexAnal->Report();
sl@0: 	while ((iLex->iType != ELexNL) && (iLex->iType != ELexEOF))
sl@0: 		iLexAnal->Read();
sl@0: 	}