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Tokenizer and analyzer package supporting precedence prioritized rules

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1 Jan 20023 min read 181.2K   2.8K   54  
A library allowing you to conveniently build a custom tokenizer and analyzer supporting precedence priorized rules
/*********************************************************************
	Copyright (C) 2001 by

		Alexander Berthold, alexander-berthold@web.de.
		Hoegestr. 54
		79108 Freiburg i. Breisgau
		Germany

    -- This file is part of cxAnalyzer --

    "cxAnalyzer" is free software; you can redistribute it and/or 
	modify it under the terms of the GNU Lesser General Public 
	License as published by the Free Software Foundation; either 
	version 2 of the License, or any later version.

    "cxAnalyzer" is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
	License along with "cxAnalyzer"; if not, write to the Free 
	Software  Foundation, Inc., 59 Temple Place, Suite 330, 
	Boston, MA  02111-1307  USA

    ---------------------------------------------------------------
      If you find any bugs or if you make other corrections/
	  enhancements, i'd appreciate if you'd let me know about 
	  that. My email is
  
       alexander-berthold@web.de
  
      If you share this code, do not remove this text.
    ---------------------------------------------------------------

*********************************************************************/

// cxAnalyzerTypeMap.cpp: implementation of the cxAnalyzerTypeMap class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"

#include <map>
#include <string>

#include "cxAnalyzerTypeMap.h"
#include "cxAnalyzerException.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

cxAnalyzerTypeMap::cxAnalyzerTypeMap()
	{
	m_nNextID	=1;

	// Register the default rules

	// NULL rule (literal)
	m_mapStr.insert(strmap_type::value_type(_T("#literal#"),ATM_ID_LITERAL));
	m_mapDW.insert(dwmap_type::value_type(0,ATM_ID_LITERAL));

	// nil (beginning/end of statement) - unsupported yet
	m_mapStr.insert(strmap_type::value_type(_T("#nil#"),ATM_ID_NIL));

	patiSetTypeInfo(ATM_ID_LITERAL,ATM_MTYPE_COMP_TOKEN,0);
//	patiSetTypeInfo(ATM_ID_MATCHALL,ATM_MTYPE_COMP_TOKEN,0);
	patiSetTypeInfo(ATM_ID_NIL,ATM_MTYPE_COMP_TOKEN,0);
	}

cxAnalyzerTypeMap::~cxAnalyzerTypeMap()
	{
	atmmap_type::const_iterator	it;

	for(it=m_mapAtmInfo.begin();it!=m_mapAtmInfo.end();it++)
		{
		cxAnalyzerTypeInfo	*patiCur = (*it).second;
		delete patiCur;
		}

	m_mapAtmInfo.clear();
	}

//////////////////////////////////////////////////////////////////////
// Protected operations
//////////////////////////////////////////////////////////////////////

void cxAnalyzerTypeMap::vInitFromTokenizerMapData(
		const cxTokenizerMapData* ptmdRules)
	{
	cxTokenizerMapData::const_iterator	it;

	for(it=ptmdRules->begin();it!=ptmdRules->end();it++)
		{
		const cxTokenizerMapData*	ptmdSub;
		const cxTokenizerTokenRule* pttrRule;

		ptmdSub		=(*it).second;
		vInitFromTokenizerMapData(ptmdSub);

		pttrRule	=ptmdSub->pttrGetRuleConst();
		if(pttrRule && (pttrRule->nGetIDValue()!=0))
			{
			int				nMType;
			std::tstring	strRule = pttrRule->strGetTokenString();

			if(pttrRule->fIsFlagSet(ttrf_character_rule))
				nMType=ATM_MTYPE_TOKEN,strRule.insert(0,_T("$"));
			else
				nMType=ATM_MTYPE_COMP_TOKEN,strRule.insert(0,_T("!"));

			int	nID	= nGetAtmTypeFor(strRule);
			vSetCustIDToAtmMapping(pttrRule->nGetIDValue(),nID);

			m_mapDW.insert(
				dwmap_type::value_type(
					DWORD(pttrRule),
					nID
				));


			patiSetTypeInfo(nID,nMType,0);
			}
		}
	}

//////////////////////////////////////////////////////////////////////
// Operations
//////////////////////////////////////////////////////////////////////

void cxAnalyzerTypeMap::vInitFromTokenizerMap(const cxTokenizerMap *pmInit)
	{
	try
		{
		vInitFromTokenizerMapData(pmInit->ptmdGetFPRules());
		vInitFromTokenizerMapData(pmInit->ptmdGetWIRules());
		}
	catch(cxAnalyzerException& e)
		{
		if(e.Error()==ANERR_DUPLICATE_CUSTID)
			{
			dwmap_type::const_iterator it;
			for(it=m_mapDW.begin();it!=m_mapDW.end();it++)
				{
				const cxTokenizerTokenRule* pttr = (const cxTokenizerTokenRule*)it->first;
				if(pttr==NULL)
					continue;
				if(pttr->nGetIDValue()==(int)e.GetData())
					{
					ASSERT(pttr!=NULL);
					e.SetErrorString(pttr->strGetInitString().c_str());
					}
				}

			}
		throw e;
		}
	}

void cxAnalyzerTypeMap::vSetCustIDToAtmMapping(int nCustID, int nAtmID)
	{
	if(nGetAtmTypeFor(nCustID)!=ATM_ID_INVALID)
		throw cxAnalyzerException(ANERR_DUPLICATE_CUSTID,NULL,(DWORD)nCustID);

	m_mapCustIDtoAtmID.insert(atm_to_id_map_type::value_type(nCustID,nAtmID));
	m_mapAtmIDtoCustID.insert(id_to_atm_map_type::value_type(nAtmID,nCustID));
	}

int cxAnalyzerTypeMap::nGetAtmTypeFor(int nCustID) const
	{
	atm_to_id_map_type::const_iterator	it;

	it				=m_mapCustIDtoAtmID.find(nCustID);
	if(it==m_mapCustIDtoAtmID.end())
		return ATM_ID_INVALID;

	return (*it).second;
	}

int cxAnalyzerTypeMap::nGetAtmTypeFor(LPCTSTR lpszString, bool fCreate)
	{
	std::tstring	str;
	str				=lpszString;
	return nGetAtmTypeFor(str,fCreate);
	}

int cxAnalyzerTypeMap::nGetAtmTypeFor(const std::tstring& str, bool fCreate)
	{
	strmap_type::iterator	it;

	it			=m_mapStr.find(str);
	if(it==m_mapStr.end())
		{
		if(!fCreate)
			return ATM_ID_INVALID;

		it		=m_mapStr.insert(strmap_type::value_type(str,m_nNextID)).first;
		m_nNextID++;
		}

	return (*it).second;
	}

int cxAnalyzerTypeMap::nGetAtmTypeFor(const cxTokenizerTokenRule* pttrRule) const
	{
	dwmap_type::const_iterator	it;

	it			=m_mapDW.find( DWORD(pttrRule) );
	if(it==m_mapDW.end())
		return ATM_ID_INVALID;

	return (*it).second;
	}

int cxAnalyzerTypeMap::nGetCustIDFor(int nAtmType) const
	{
	id_to_atm_map_type::const_iterator	it;

	it				=m_mapAtmIDtoCustID.find(nAtmType);
	if(it==m_mapAtmIDtoCustID.end())
		return 0;

	return (*it).second;
	}

int cxAnalyzerTypeMap::nNormalizeCustID(int nCustID) const
	{
	int		nAtmType = nGetAtmTypeFor(nCustID);
	if(nAtmType==ATM_ID_INVALID)
		return 0;

	return nGetCustIDFor(nAtmType);
	}

cxAnalyzerTypeInfo* cxAnalyzerTypeMap::patiGetTypeInfo(int nID)
	{
	atmmap_type::iterator	it;

	it			=m_mapAtmInfo.find(nID);
	if(it==m_mapAtmInfo.end())
		return NULL;

	return (*it).second;
	}

const cxAnalyzerTypeInfo* cxAnalyzerTypeMap::patiGetTypeInfo(int nID) const
	{
	atmmap_type::const_iterator	it;

	it			=m_mapAtmInfo.find(nID);
	if(it==m_mapAtmInfo.end())
		return NULL;

	return (*it).second;
	}

cxAnalyzerTypeInfo* cxAnalyzerTypeMap::patiSetTypeInfo(int nID,
														   int nMType,
														   int nSubType)
	{
	atmmap_type::iterator	it;
	cxAnalyzerTypeInfo		*patiData = NULL;

	it			=m_mapAtmInfo.find(nID);
	if(it!=m_mapAtmInfo.end())
		return NULL;

	patiData	=new cxAnalyzerTypeInfo(nID,nMType,nSubType);
	m_mapAtmInfo.insert(atmmap_type::value_type(nID,patiData));

	return patiData;
	}

std::tstring cxAnalyzerTypeMap::strGetStringForID(int nID) const
	{
	strmap_type::const_iterator	it;

	for(it=m_mapStr.begin();it!=m_mapStr.end();it++)
		{
		if( (*it).second == nID)
			return (*it).first;
		}

	return _T("");
	}

DWORD		cxAnalyzerTypeMap::dwGetDWORDForID(int nID) const
	{
	dwmap_type::const_iterator	it;

	for(it=m_mapDW.begin();it!=m_mapDW.end();it++)
		{
		if( (*it).second == nID)
			return (*it).first;
		}

	return 0;
	}

void	cxAnalyzerTypeMap::vDump() const
	{
	TRACE(_T("\nDumping cxAnalyzerTypeMap(0x%08lx):\n"),((DWORD)this));
	TRACE(_T("*************************************\n"));
	strmap_type::const_iterator	it;

	for(it=m_mapStr.begin();it!=m_mapStr.end();it++)
		{
		DWORD		dwVal = ((cxAnalyzerTypeMap*)this)->dwGetDWORDForID( (*it).second );
		TRACE(_T("{%30s},{0x%08lx} -> %d\n"), (*it).first.data(), dwVal, (*it).second);
		}

	}

/*void	cxAnalyzerTypeMap::enumerate(ctkEnumerator<LPCTSTR>& enumerator) const
	{
	TCHAR	szTemp[256];
	strmap_type::const_iterator	it;
	int		i = 0;

	enumerator.enumBegin();
	for(it=m_mapStr.begin();it!=m_mapStr.end();it++)
		{
		_sntprintf(szTemp,255,_T("AtmID#:%5d, string='%s'"),
			it->second, it->first.data() );

		enumerator.enumElement(i, szTemp);
		}
	enumerator.enumEnd();
	}
*/

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