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Tokenizer and analyzer package supporting precedence prioritized rules

, 1 Jan 2002
A library allowing you to conveniently build a custom tokenizer and analyzer supporting precedence priorized rules
cxtpackagetut_win32vc.zip
cxTokenizer
cxTokenizer.dsp
cxTokenizer.plg
cxtPackage
cxtPackage.plg
cxtPackage.dsp
mathTok
mathTok.plg
mathTok.dsp
simpleCalc
simpleCalc.bmp
simpleCalc.dsp
simpleCalc.plg
tkCommon
cxAnalyzer
cxAnalyzer.dsp
cxAnalyzer.plg
cxtpackage_win32vc.zip
cxTokenizer.dsp
cxTokenizer.plg
Debug
cxAnalyzer.dsp
cxAnalyzer.plg
cxtPackage.plg
cxtPackage.dsp
grammaride.zip
pkgcomplete.zip
cxTokenizerMatchTokenRule.inl
cxTokenizer.dsp
cxtPackage.dsp
emptyTestApp
emptyTestApp.clw
res
emptyTestApp.ico
emptyTestApp.dsp
grammarIDE
grammarIDE.clw
res
grammarIDEDoc.ico
icon1.ico
zoomable.ico
Toolbar.bmp
grammarIDE.ico
vssver.scc
grammarIDE.dsp
simpleCalc.bmp
simpleCalc.dsp
vssver.scc
cxaToken.inl
cxAnalyzer.dsp
pkgsrconly.zip
cxTokenizerMatchTokenRule.inl
cxTokenizer.dsp
cxtPackage.dsp
emptyTestApp.clw
emptyTestApp.ico
emptyTestApp.dsp
vssver.scc
cxaToken.inl
cxAnalyzer.dsp
// grammarIDEDoc.cpp : implementation of the CGrammarIDEDoc class
//

#include "stdafx.h"
#include "grammarIDE.h"
#include "grammarIDEDoc.h"
#include "ltrItemTreeWnd.h"
#include "DlgEvaluate.h"
#include <fstream>

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

/////////////////////////////////////////////////////////////////////////////
// CGrammarIDEDoc

IMPLEMENT_DYNCREATE(CGrammarIDEDoc, CDocument)

BEGIN_MESSAGE_MAP(CGrammarIDEDoc, CDocument)
//{{AFX_MSG_MAP(CGrammarIDEDoc)
ON_UPDATE_COMMAND_UI(ID_FILE_SAVE, OnUpdateFileSave)
ON_COMMAND(ID_PARSE_REPARSE, OnParseReparse)
	ON_COMMAND(ID_EDIT_RENUMBER_IDS, OnEditRenumberIds)
	ON_COMMAND(ID_EDIT_RENUMBER_IDS_STRICT, OnEditRenumberIdsStrict)
	//}}AFX_MSG_MAP
ON_COMMAND(ID_VIEW_EVALUATION, OnViewEvaluation)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CGrammarIDEDoc construction/destruction

CGrammarIDEDoc::CGrammarIDEDoc()
	{
	std::tstringstream strm("");
	m_pPkg = new cxtPackage(strm);
	}

CGrammarIDEDoc::~CGrammarIDEDoc()
	{
	delete m_pPkg;
	}

BOOL CGrammarIDEDoc::OnNewDocument()
	{
	if (!CDocument::OnNewDocument())
		return FALSE;
	
	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)
	delete m_pPkg;
	std::tstringstream strm("");
	m_pPkg = new cxtPackage(strm);
	m_aRules.RemoveAll();
	docElement d;
	d.fSkip=false;
	d.strError="";
	d.strLine="[tokens]";
	m_aRules.Add(d);
	d.strLine="[seperators]";
	m_aRules.Add(d);
	d.strLine="[rules]";
	m_aRules.Add(d);
	d.strLine="[grammar]";
	m_aRules.Add(d);
	UpdateAllViews(NULL, HINT_CLEARPROPERTIES);
	
	return TRUE;
	}



/////////////////////////////////////////////////////////////////////////////
// CGrammarIDEDoc serialization

void CGrammarIDEDoc::Serialize(CArchive& ar)
	{
	if (ar.IsStoring())
		{
		// TODO: add storing code here
		}
	else
		{
		// TODO: add loading code here
		}
	}

bool CGrammarIDEDoc::TryReloadPackage(CString& strErrorText, CString& strErrorDesc)
	{
	std::tstringstream	strm;
	int					i, nSize = m_aRules.GetSize();
	
	delete m_pPkg; m_pPkg = NULL;
	
	for(i=0; i<nSize; i++)
		{
		if(!m_aRules[i].fSkip)
			strm << (LPCTSTR)m_aRules[i].strLine << std::endl;
		}
	
	try {
		m_pPkg = new cxtPackage(strm);
		}
	catch(ctkExceptionBase& e)
		{
		std::tstringstream strm("");
		CString strErr;
		strErr = LookupError(e.Error())->lpszDesc;
		delete m_pPkg;
		m_pPkg = new cxtPackage(strm);
		strErrorText = e.ErrorString();
		strErrorDesc = strErr;
		return false;
		}
	
	return true;
	}

bool CGrammarIDEDoc::ReloadPackage(CString& strErrors)
	{
	bool fErrors = false;
	int nCount = 0;
	for(nCount=0;nCount<100;nCount++)
		{
		CString	strErrorText, strErr;
		if(TryReloadPackage(strErrorText, strErr))
			break;
		
		int		i;
		bool	fFound = false;
		for(i=0;i<m_aRules.GetSize();i++)
			{
			int len = strErrorText.GetLength();
			CString strCmp = m_aRules[i].strLine.Right(len);
			if(strCmp==strErrorText)
				{
				CString strTemp;
				strTemp.Format("Error '%s' in line %d:\r\n'%s'\r\n\r\n", (LPCTSTR)strErr, i+1, m_aRules[i].strLine );
				strErrors += strTemp;
				m_aRules[i].fSkip = true;
				m_aRules[i].strError = strTemp;
				fErrors = true;
				fFound = true;
				break;
				}
			}
		}
	
	return fErrors;
	}

bool CGrammarIDEDoc::ReloadFromEditor(CRichEditCtrl *pCtrl, CString& strErrors)
	{
	CHARRANGE cr;
	int nPos = pCtrl->GetFirstVisibleLine();
	pCtrl->GetSel(cr);
	pCtrl->LockWindowUpdate();
	int		i, lines = pCtrl->GetLineCount();
	TCHAR	szBuffer[512];
	szBuffer[511]='\0';
	
	m_aRules.RemoveAll();
	for(i=0;i<lines;i++)
		{
		pCtrl->GetLine(i,szBuffer,511);
		if(szBuffer[0]!='\0' && szBuffer[1]!='\0')
			{
			// RichEdit
			int len = _tcslen(szBuffer);
			if(szBuffer[len-2]=='\r' && szBuffer[len-1]=='\n')
				szBuffer[len-2]=0;
			}
		if(szBuffer[0]!='\0')
			{
			// RichEdit20a
			int len = _tcslen(szBuffer);
			if(szBuffer[len-1]=='\r')
				szBuffer[len-1]=0;
			}
		
		if(!(i==(lines-1) && szBuffer[0]=='\0'))
			{
			docElement docEl;
			docEl.fSkip = false;
			docEl.strError = "";
			docEl.strLine = szBuffer;
			m_aRules.Add(docEl);
			}
		}
	
	ReloadPackage(strErrors);
	UpdateAllViews(NULL);
	
	lines = m_aRules.GetSize();
	for(i=0;i<lines;i++)
		{
		docElement& docEl = m_aRules[i];
		if(docEl.fSkip)
			{
			CHARRANGE cr;
			CHARFORMAT cf;
			ZeroMemory(&cf,sizeof(cf));
			cf.cbSize = sizeof(cf);
			cf.dwMask = CFM_COLOR | CFM_UNDERLINE;
			cf.dwEffects = CFE_UNDERLINE;
			cf.crTextColor = RGB(255,0,0);
			
			int nStart = pCtrl->LineIndex(i), nEnd = pCtrl->LineIndex(i+1);
			pCtrl->GetSel(cr);
			pCtrl->SetSel(nStart,nEnd);
			pCtrl->SetSelectionCharFormat(cf);
			pCtrl->SetSel(cr);
			}
		}
	
	pCtrl->SetSel(cr);
	int nPosNow = pCtrl->GetFirstVisibleLine();
	pCtrl->LineScroll(-nPosNow);
	pCtrl->LineScroll(nPos);
	pCtrl->UnlockWindowUpdate();
	//	int nPos = pCtrl->GetScrollPos(SB_VERT);
	
	return true;
	}

/////////////////////////////////////////////////////////////////////////////
// CGrammarIDEDoc diagnostics

#ifdef _DEBUG
void CGrammarIDEDoc::AssertValid() const
	{
	CDocument::AssertValid();
	}

void CGrammarIDEDoc::Dump(CDumpContext& dc) const
	{
	CDocument::Dump(dc);
	}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CGrammarIDEDoc commands

void CGrammarIDEDoc::OnViewEvaluation()
	{
	CDlgEvaluate dlg(*m_pPkg);
	
	dlg.DoModal();
	}

BOOL CGrammarIDEDoc::OnOpenDocument(LPCTSTR lpszPathName) 
	{
	if (!CDocument::OnOpenDocument(lpszPathName))
		return FALSE;
	
	// TODO: Add your specialized creation code here
	CArray<CString,CString&> m_strErrors;
	std::ifstream istrm(lpszPathName);
	delete m_pPkg; m_pPkg = NULL;
	TCHAR	szTemp[2048];
	szTemp[2047]=0;
	
	m_aRules.RemoveAll();
	for(;!istrm.eof() && !istrm.fail();)
		{
		docElement docEl;
		CString str;
		istrm.getline(szTemp,2047);
		str = szTemp;
		docEl.fSkip = false;
		docEl.strError = "";
		docEl.strLine = szTemp;
		m_aRules.Add(docEl);
		}
	
	CString strErrors="";
	ReloadPackage(strErrors);
	
	if(!strErrors.IsEmpty())
		AfxMessageBox(strErrors);
	
	return TRUE;
	}

BOOL CGrammarIDEDoc::OnSaveDocument(LPCTSTR lpszPathName) 
	{
	if(IsModified())
		{
		UpdateAllViews(NULL,HINT_SAVEEDITOR);
		SetModifiedFlag(FALSE);
		}
	
	CString	strErrors;
	int		i;
	
	for(i=0;i<m_aRules.GetSize();i++)
		{
		if(m_aRules[i].fSkip)
			strErrors += m_aRules[i].strError;
		}
	
	if(!strErrors.IsEmpty())
		{
		strErrors = "The document has the following errors, should it be saved anyway?\r\n\r\n"+strErrors;
		if(AfxMessageBox(
			strErrors,
			MB_ICONQUESTION|MB_YESNO)==IDNO)
			return FALSE;
		}
	
	std::ofstream ostrm(lpszPathName);
	for(i=0;i<m_aRules.GetSize();i++)
		ostrm << ((LPCTSTR)m_aRules[i].strLine) << std::endl;
	
	return TRUE;
	}

void CGrammarIDEDoc::OnUpdateFileSave(CCmdUI* pCmdUI) 
	{
	if(IsModified())
		pCmdUI->Enable(TRUE); else pCmdUI->Enable(FALSE);
	}

void CGrammarIDEDoc::OnParseReparse() 
	{
	// TODO: Add your command handler code here
	UpdateAllViews(NULL,HINT_SAVEEDITOR);
	}

void CGrammarIDEDoc::OnEditRenumberIds() 
	{
	// TODO: Add your command handler code here
	UpdateAllViews(NULL,HINT_RENUMBER);
	}

void CGrammarIDEDoc::OnEditRenumberIdsStrict() 
	{
	// TODO: Add your command handler code here
	UpdateAllViews(NULL,HINT_RENUMBER_STRICT);
	}

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About the Author

Alexander Berthold
Web Developer
Germany Germany
No Biography provided

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Article Copyright 2001 by Alexander Berthold
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