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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef _LEX_HXX
#define _LEX_HXX
#include <boost/ptr_container/ptr_vector.hpp>
#include <hash.hxx>
#include <tools/gen.hxx>
#include <tools/stream.hxx>
enum SVTOKEN_ENUM { SVTOKEN_EMPTY, SVTOKEN_COMMENT,
SVTOKEN_INTEGER, SVTOKEN_STRING,
SVTOKEN_BOOL, SVTOKEN_IDENTIFIER,
SVTOKEN_CHAR, SVTOKEN_RTTIBASE,
SVTOKEN_EOF, SVTOKEN_HASHID };
class SvToken
{
friend class SvTokenStream;
sal_uLong nLine, nColumn;
SVTOKEN_ENUM nType;
rtl::OString aString;
union
{
sal_uLong nLong;
sal_Bool bBool;
char cChar;
SvStringHashEntry * pHash;
};
public:
SvToken();
SvToken( const SvToken & rObj );
SvToken( sal_uLong n );
SvToken( SVTOKEN_ENUM nTypeP, sal_Bool b );
SvToken( char c );
SvToken( SVTOKEN_ENUM nTypeP, const rtl::OString& rStr );
SvToken( SVTOKEN_ENUM nTypeP );
SvToken & operator = ( const SvToken & rObj );
rtl::OString GetTokenAsString() const;
SVTOKEN_ENUM GetType() const { return nType; }
void SetLine( sal_uLong nLineP ) { nLine = nLineP; }
sal_uLong GetLine() const { return nLine; }
void SetColumn( sal_uLong nColumnP ) { nColumn = nColumnP; }
sal_uLong GetColumn() const { return nColumn; }
sal_Bool IsEmpty() const { return nType == SVTOKEN_EMPTY; }
sal_Bool IsComment() const { return nType == SVTOKEN_COMMENT; }
sal_Bool IsInteger() const { return nType == SVTOKEN_INTEGER; }
sal_Bool IsString() const { return nType == SVTOKEN_STRING; }
sal_Bool IsBool() const { return nType == SVTOKEN_BOOL; }
sal_Bool IsIdentifierHash() const
{ return nType == SVTOKEN_HASHID; }
sal_Bool IsIdentifier() const
{
return nType == SVTOKEN_IDENTIFIER
|| nType == SVTOKEN_HASHID;
}
sal_Bool IsChar() const { return nType == SVTOKEN_CHAR; }
sal_Bool IsRttiBase() const { return nType == SVTOKEN_RTTIBASE; }
sal_Bool IsEof() const { return nType == SVTOKEN_EOF; }
const rtl::OString& GetString() const
{
return IsIdentifierHash()
? pHash->GetName()
: aString;
}
sal_uLong GetNumber() const { return nLong; }
sal_Bool GetBool() const { return bBool; }
char GetChar() const { return cChar; }
void SetHash( SvStringHashEntry * pHashP )
{ pHash = pHashP; nType = SVTOKEN_HASHID; }
sal_Bool HasHash() const
{ return nType == SVTOKEN_HASHID; }
SvStringHashEntry * GetHash() const { return pHash; }
sal_Bool Is( SvStringHashEntry * pEntry ) const
{ return IsIdentifierHash() && pHash == pEntry; }
};
inline SvToken::SvToken()
: nType( SVTOKEN_EMPTY ) {}
inline SvToken::SvToken( sal_uLong n )
: nType( SVTOKEN_INTEGER ), nLong( n ) {}
inline SvToken::SvToken( SVTOKEN_ENUM nTypeP, sal_Bool b )
: nType( nTypeP ), bBool( b ) {}
inline SvToken::SvToken( char c )
: nType( SVTOKEN_CHAR ), cChar( c ) {}
inline SvToken::SvToken( SVTOKEN_ENUM nTypeP, const rtl::OString& rStr )
: nType( nTypeP ), aString( rStr ) {}
inline SvToken::SvToken( SVTOKEN_ENUM nTypeP )
: nType( nTypeP ) {}
class SvTokenStream
{
sal_uLong nLine, nColumn;
int nBufPos;
int c; // next character
sal_uInt16 nTabSize; // length of tabulator
rtl::OString aStrTrue;
rtl::OString aStrFalse;
sal_uLong nMaxPos;
SvFileStream * pInStream;
SvStream & rInStream;
String aFileName;
boost::ptr_vector<SvToken> aTokList;
boost::ptr_vector<SvToken>::iterator pCurToken;
void InitCtor();
rtl::OString aBufStr;
int GetNextChar();
int GetFastNextChar()
{
return aBufStr[nBufPos++];
}
void FillTokenList();
sal_uLong GetNumber();
sal_Bool MakeToken( SvToken & );
sal_Bool IsEof() const { return rInStream.IsEof(); }
void SetMax()
{
sal_uLong n = Tell();
if( n > nMaxPos )
nMaxPos = n;
}
void CalcColumn()
{
// if end of line spare calculation
if( 0 != c )
{
sal_uInt16 n = 0;
nColumn = 0;
while( n < nBufPos )
nColumn += aBufStr[n++] == '\t' ? nTabSize : 1;
}
}
public:
SvTokenStream( const String & rFileName );
SvTokenStream( SvStream & rInStream, const String & rFileName );
~SvTokenStream();
const String & GetFileName() const { return aFileName; }
SvStream & GetStream() { return rInStream; }
void SetTabSize( sal_uInt16 nTabSizeP )
{ nTabSize = nTabSizeP; }
sal_uInt16 GetTabSize() const { return nTabSize; }
SvToken* GetToken_PrevAll()
{
boost::ptr_vector<SvToken>::iterator pRetToken = pCurToken;
// current iterator always valid
if(pCurToken != aTokList.begin())
--pCurToken;
return &(*pRetToken);
}
SvToken* GetToken_NextAll()
{
boost::ptr_vector<SvToken>::iterator pRetToken = pCurToken++;
if (pCurToken == aTokList.end())
pCurToken = pRetToken;
SetMax();
return &(*pRetToken);
}
SvToken* GetToken_Next()
{
// comments get removed initially
return GetToken_NextAll();
}
SvToken* GetToken() const { return &(*pCurToken); }
sal_Bool Read( char cChar )
{
if( pCurToken->IsChar()
&& cChar == pCurToken->GetChar() )
{
GetToken_Next();
return sal_True;
}
else
return sal_False;
}
void ReadDelemiter()
{
if( pCurToken->IsChar()
&& (';' == pCurToken->GetChar()
|| ',' == pCurToken->GetChar()) )
{
GetToken_Next();
}
}
sal_uInt32 Tell() const { return pCurToken-aTokList.begin(); }
void Seek( sal_uInt32 nPos )
{
pCurToken = aTokList.begin() + nPos;
SetMax();
}
void SeekRel( sal_uInt32 nRelPos )
{
sal_uInt32 relIdx = Tell() + nRelPos;
if ( relIdx < aTokList.size())
{
pCurToken = aTokList.begin()+ (Tell() + nRelPos );
SetMax();
}
}
void SeekEnd()
{
pCurToken = aTokList.begin()+nMaxPos;
}
};
#endif // _LEX_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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