// Copyright (c) 2004-2009 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:

// Implementation of the Class DefFile for the elf2e32 tool

// @internalComponent

// @released

// 

//

#ifndef _DEF_FILE_

#define _DEF_FILE_

#include <list>

class Symbol;

typedef std::list <Symbol*>	SymbolList;

/**

Class for DEF File Handler.

@internalComponent

@released

*/

class DefFile

{

	public:

		DefFile():iSymbolList(NULL){};

		virtual ~DefFile();

		SymbolList* ReadDefFile(char *defFile);

		void WriteDefFile(char *fileName, SymbolList *newSymbolList);

		SymbolList* GetSymbolEntryList(char *defFile);

		SymbolList* GetSymbolEntryList() { return iSymbolList;}

	private:

		char *iFileName;

		SymbolList *iSymbolList;

		int GetFileSize(FILE * fptrDef);

		char* OpenDefFile(char *defFile);

		void ParseDefFile(char *defData);

		bool Tokenize(char* tokens, int aLineNum, Symbol& aSymbol);

};

//Different states while parsing a line in the def file.

enum DefStates

{

	EInitState = 0,

	ESymbolName = 1,

	EAtSymbol,

	EOrdinal,

	EOptionals,

	EComment,

	EFinalState,

	EInvalidState

};

#define CODESYM "CODE"

#define DATASYM "DATA"

/**

Class for parsing a line from the DEF File.

@internalComponent

@released

*/

class LineToken

{

public:

	LineToken(char* , int , char *, Symbol *aSym);

	char *iLine;

	Symbol *iSymbol;

	int iOffset;

	DefStates iState;

	char *iFileName;

	int iLineNum;

	bool Tokenize();

	void NextToken();

	void IncrOffset(int aOff);

	void SetState(DefStates aState);

	bool IsWhiteSpace(char *aStr, int&);

	bool IsPattern(char*, int&, int&);

	bool IsDigit(char*, int&);

	bool IsWord(char*, int&);

};

#endif