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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
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cpAbsd.dsw
?// PaneEditorWnd.cpp : implementation file
//

#include "stdafx.h"
#include "grammarIDE.h"
#include "grammarIDEDoc.h"
#include "PaneEditorWnd.h"

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

/////////////////////////////////////////////////////////////////////////////
// CPaneEditorWnd dialog

UINT CPaneEditorWnd::WMU_FORMATLINES = 0;

CPaneEditorWnd::CPaneEditorWnd(CGrammarIDEDoc* pDoc, CWnd* pParent /*=NULL*/)
: CDialog(CPaneEditorWnd::IDD, pParent),
  m_pDoc(pDoc)
	{
	if(WMU_FORMATLINES==0)
		WMU_FORMATLINES = RegisterWindowMessage(_T("WMU_FORMATLINES"));
	//{{AFX_DATA_INIT(CPaneEditorWnd)
	m_nSection = -1;
	//}}AFX_DATA_INIT
	m_nFmtMin = -1;
	m_nFmtMax = -1;
	m_fModified = false;
	}


void CPaneEditorWnd::DoDataExchange(CDataExchange* pDX)
	{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CPaneEditorWnd)
	DDX_Control(pDX, IDC_RICHEDIT, m_richEdit);
	//}}AFX_DATA_MAP
	}


BEGIN_MESSAGE_MAP(CPaneEditorWnd, CDialog)
//{{AFX_MSG_MAP(CPaneEditorWnd)
	ON_WM_SIZE()
	ON_NOTIFY(EN_PROTECTED, IDC_RICHEDIT, OnProtectedRichEdit)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
	ON_REGISTERED_MESSAGE(WMU_FORMATLINES, OnFormatLines)
END_MESSAGE_MAP()

LPCTSTR	g_lpszSections[]={"[tokens]","[seperators]","[rules]","[grammar]",NULL};

/////////////////////////////////////////////////////////////////////////////
// CPaneEditorWnd operations

void CPaneEditorWnd::Renumber(bool fStrict)
	{
	if(GetSafeHwnd()==NULL)
		return;

	CHARRANGE crPrev;
	m_richEdit.LockWindowUpdate();
	m_richEdit.GetSel(crPrev);
	int		i, lines = m_richEdit.GetLineCount();
	int		nCurID = 0;
	TCHAR	szTemp[512];
	for(i=0;i<lines;i++)
		{
		if(IsSectionLine(i))
			continue;
		if(!IsLineWellFormed(i))
			continue;

		CHARRANGE cr;
		std::tstring strLine;
		m_richEdit.GetLine(i,szTemp,510);
		szTemp[511]='\0';
		strLine = szTemp;
		cr.cpMin = m_richEdit.LineIndex(i);
		cr.cpMax = m_richEdit.LineIndex(i+1);
		m_richEdit.SetSel(cr);

		std::tstring::size_type pos = strLine.find(':');
		ASSERT(pos!=std::tstring::npos);
		int	nLineID = _ttoi(strLine.substr(0,pos).c_str());
		if(nLineID!=0)
			{
			bool fInvert = (nLineID<0);
			nLineID = fInvert?-nLineID:nLineID;
			nCurID++;
			TCHAR szBuf[32];
			if(nLineID>nCurID && !fStrict) nCurID=nLineID;
			_itot( (fInvert)?-nCurID:nCurID,szBuf,10);
			strLine = std::tstring(szBuf)+strLine.substr(pos);
			m_richEdit.ReplaceSel(strLine.c_str(),FALSE);
			FormatLine(i);
			}
		}
	m_richEdit.SetSel(crPrev);
	m_richEdit.UnlockWindowUpdate();
	}
void CPaneEditorWnd::SetSection(esection eSection)
	{
	if(GetSafeHwnd()==NULL)
		return;

	UpdateData(TRUE);
	switch(eSection)
		{
		case section_tokens:
			m_nSection=0;
			break;
		case section_seperators:
			m_nSection=1;
			break;
		case section_rules:
			m_nSection=2;
			break;
		case section_grammar:
			m_nSection=3;
			break;
		default:
			ASSERT(FALSE);
			break;
		}
	UpdateData(FALSE);
	}

bool CPaneEditorWnd::IsInIdRange(int pos)
	{
	TCHAR	szTemp[256]; szTemp[255]='\0';
	int	line = m_richEdit.LineFromChar(pos);
	int lpos = pos-m_richEdit.LineIndex(line);
	int j;

	m_richEdit.GetLine(line,szTemp,255);
	for(j=0;g_lpszSections[j]!=NULL;j++)
		if(_tcslen(szTemp)>2 && _tcsncmp(szTemp,g_lpszSections[j],_tcslen(szTemp)-2)==0)
			return false;

	TCHAR *tmp = _tcschr(szTemp,':');
	int dotpos = (tmp!=NULL)?(tmp-szTemp):-1;
	if(lpos<=dotpos)
		return true;

	return false;
	}

bool CPaneEditorWnd::IsSectionLine(int nLine)
	{
	TCHAR	szTemp[256]; szTemp[255]='\0';
	m_richEdit.GetLine(nLine,szTemp,255);

	for(int j=0;g_lpszSections[j]!=NULL;j++)
		if(_tcslen(szTemp)>2 && _tcsncmp(szTemp,g_lpszSections[j],_tcslen(szTemp)-2)==0)
			return true;

	return false;
	}

bool CPaneEditorWnd::IsLineWellFormed(int nLine)
	{
	TCHAR	szTemp[256]; szTemp[255]='\0';
	m_richEdit.GetLine(nLine,szTemp,255);
	bool	fMinus = false;
	int		i, len = _tcslen(szTemp);

	for(i=0;i<len;i++)
		{
		if(szTemp[i]=='-')
			{
			if(fMinus)
				return false;
			fMinus=true;
			continue;
			}
		if(szTemp[i]==':')
			break;
		if(!isdigit(szTemp[i]))
			return false;
		}
	if(i<(len-2))
		return true;

	return false;
	}

void CPaneEditorWnd::FormatLine(int nLine)
	{
	TCHAR	szTemp[256]; szTemp[255]='\0';
	int		lStart = m_richEdit.LineIndex(nLine);
	int		lEnd = m_richEdit.LineIndex(nLine+1);
	m_richEdit.GetLine(nLine,szTemp,255);
	CHARFORMAT	cf;
	ZeroMemory(&cf,sizeof(cf));

	// Is the line commented out?
	if(szTemp[0]=='\'')
		{
		ZeroMemory(&cf,sizeof(cf));
		cf.cbSize		=sizeof(cf);
		cf.dwMask		=CFM_FACE|CFM_COLOR|CFM_PROTECTED|CFM_UNDERLINE|CFM_ITALIC;
		cf.dwEffects	=CFE_PROTECTED|CFE_UNDERLINE|CFE_ITALIC;
		cf.crTextColor	=RGB(0,128,0);
		_tcscpy(cf.szFaceName,_T("Courier New"));
		m_richEdit.SetSel(lStart,lEnd);
		m_richEdit.SetSelectionCharFormat(cf);
		return;
		}
	
	// Is the line one of the section lines?
	bool	fSectionLine = false;
	for(int j=0;g_lpszSections[j]!=NULL;j++)
		if(_tcslen(szTemp)>2 && _tcsncmp(szTemp,g_lpszSections[j],_tcslen(g_lpszSections[j]))==0)
			{ fSectionLine = true; break; };

	// Unprotect the line if not a section line (by pressing ENTER at the
 	// end of a protected section line, the following line gets also protected)
	if(!fSectionLine)
		{
		cf.cbSize	=sizeof(cf);
		//cf.dwMask	=CFM_UNDERLINE;

		// Is the line well-formed?
		if(IsLineWellFormed(nLine))
			{
			int pos = _tcschr(szTemp,':')-szTemp;
			ZeroMemory(&cf,sizeof(cf));
			cf.cbSize	=sizeof(cf);
			cf.dwMask	=CFM_COLOR|CFM_UNDERLINE|CFM_ITALIC;
			cf.dwEffects=0;
			if(szTemp[0]=='-')	cf.crTextColor=RGB(255,128,64);
			else				cf.crTextColor=RGB(0,128,0);
			m_richEdit.SetSel(lStart,lStart+pos);
			m_richEdit.SetSelectionCharFormat(cf);
			cf.crTextColor=RGB(0,0,0);
			m_richEdit.SetSel(lStart+pos,lEnd);
			m_richEdit.SetSelectionCharFormat(cf);
			}
		else
			{
			ZeroMemory(&cf,sizeof(cf));
			cf.cbSize	=sizeof(cf);
			cf.dwMask	=CFM_COLOR|CFM_UNDERLINE|CFM_ITALIC;
			cf.dwEffects=CFE_UNDERLINE;
			cf.crTextColor	=RGB(255,0,0);
			m_richEdit.SetSel(lStart,lEnd);
			m_richEdit.SetSelectionCharFormat(cf);
			}
		}
	else
		{
		ZeroMemory(&cf,sizeof(cf));
		cf.cbSize		=sizeof(cf);
		cf.dwMask		=CFM_FACE|CFM_COLOR|CFM_PROTECTED|CFM_UNDERLINE|CFM_ITALIC;
		cf.dwEffects	=CFE_PROTECTED;
		cf.crTextColor	=RGB(0,0,255);
		_tcscpy(cf.szFaceName,_T("Courier New"));
		m_richEdit.SetSel(lStart,lEnd);
		m_richEdit.SetSelectionCharFormat(cf);
		}
	
	//m_richEdit.SetEventMask(m_richEdit.GetEventMask() | ENM_PROTECTED);
	}

void CPaneEditorWnd::UpdateDocStatus()
	{
	CHARRANGE cr;
	m_richEdit.LockWindowUpdate();
	m_richEdit.GetSel(cr);
	int		i, nLines = m_richEdit.GetLineCount();
	for(i=0;i<nLines;i++)
		FormatLine(i);
	m_richEdit.SetSel(cr);
	m_richEdit.UnlockWindowUpdate();
	}

/////////////////////////////////////////////////////////////////////////////
// CPaneEditorWnd message handlers

void CPaneEditorWnd::OnSize(UINT nType, int cx, int cy) 
	{
	CDialog::OnSize(nType, cx, cy);
	
	// TODO: Add your message handler code here
	CWnd	*pRichEd = GetDlgItem(IDC_RICHEDIT);
	if(pRichEd!=NULL && pRichEd->GetSafeHwnd()!=NULL)
		{
		CRect	rcClient, rcTemp;
		GetClientRect(&rcClient);
		pRichEd->MoveWindow(&rcClient);
		}
	}

void CPaneEditorWnd::OnUpdate()
	{
	m_richEdit.SetEventMask(m_richEdit.GetEventMask() &~ ENM_PROTECTED);

	CHARFORMAT		cf0,cf1;
	ZeroMemory(&cf0,sizeof(cf0));
	cf0.cbSize		=sizeof(cf0);
	cf0.dwMask		=CFM_FACE|CFM_COLOR|CFM_PROTECTED;
	cf0.dwEffects	=CFE_PROTECTED;
	cf0.crTextColor	=RGB(0,0,0);
	_tcscpy(cf0.szFaceName,_T("Courier New"));
	
	ZeroMemory(&cf1,sizeof(cf1));
	cf1.cbSize		=sizeof(cf1);
	cf1.dwMask		=CFM_FACE|CFM_COLOR|CFM_PROTECTED;
	cf1.dwEffects	=CFE_PROTECTED;
	cf1.crTextColor	=RGB(0,0,255);
	_tcscpy(cf1.szFaceName,_T("Courier New"));

	m_richEdit.SetSel(0,-1);
	m_richEdit.SetDefaultCharFormat(cf0);
	m_richEdit.ReplaceSel("");

	int	i, nSize = m_pDoc->m_aRules.GetSize();
	bool fOn = false;
	for(i=0;i<nSize;i++)
		{
		const docElement& el = m_pDoc->m_aRules[i];

		m_richEdit.SetSel(-1,-1);
		m_richEdit.SetSelectionCharFormat(cf0);
		m_richEdit.ReplaceSel(el.strLine);
		m_richEdit.SetSel(-1,-1);
		m_richEdit.SetSelectionCharFormat(cf0);
		m_richEdit.ReplaceSel("\r\n");
		FormatLine(i);
		}

	m_richEdit.SetEventMask(m_richEdit.GetEventMask() | ENM_PROTECTED);
	m_fModified = false;
	}

BOOL CPaneEditorWnd::OnInitDialog() 
	{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	OnUpdate();
	
	return TRUE;  // return TRUE unless you set the focus to a control
	// EXCEPTION: OCX Property Pages should return FALSE
	}

void CPaneEditorWnd::OnProtectedRichEdit(NMHDR* pNMHDR, LRESULT* pResult) 
	{
	ENPROTECTED *pEnProtected = reinterpret_cast<ENPROTECTED *>(pNMHDR);

	// TODO: The control will not send this notification unless you override the
	// CDialog::OnInitDialog() function to send the EM_SETEVENTMASK message
	// to the control with the ENM_PROTECTED flag ORed into the lParam mask.
	int		nLine1 = m_richEdit.LineFromChar(pEnProtected->chrg.cpMin);
	int		nLine2 = (pEnProtected->chrg.cpMin==pEnProtected->chrg.cpMax)
					 ?nLine1:m_richEdit.LineFromChar(pEnProtected->chrg.cpMax);

	(*pResult) = 0;

	// Character message?
	if( pEnProtected->msg>=WM_KEYFIRST &&
		pEnProtected->msg<=WM_KEYLAST)
		{
		if(pEnProtected->wParam==VK_BACK)
			nLine1--;

		if(m_nFmtMin==-1) m_nFmtMin=nLine1; else m_nFmtMin=(nLine1<m_nFmtMin)?nLine1:m_nFmtMin;
		if(m_nFmtMax==-1) m_nFmtMax=nLine2+1; else m_nFmtMax=(nLine2>m_nFmtMax)?nLine2:m_nFmtMax;

		KillTimer(ID_TIMER_UPDATEDOCSTATUS);
		SetTimer(ID_TIMER_UPDATEDOCSTATUS,300,NULL);

		m_pDoc->SetModifiedFlag();
		}

	}

void CPaneEditorWnd::OnCancel()
	{
	}

LRESULT CPaneEditorWnd::OnFormatLines(WPARAM wP, LPARAM lP)
	{
	if(wP==0 && lP==0)
		{
		if(m_nFmtMin==-1)
			return 0;

		wP = (m_nFmtMin<0)?0:(UINT)m_nFmtMin, lP = (m_nFmtMax<0)?0:(UINT)m_nFmtMax;
		m_nFmtMin = -1, m_nFmtMax = -1;
		}

	int		i;
	CHARRANGE cr;
	m_richEdit.SetEventMask(m_richEdit.GetEventMask() &~ ENM_PROTECTED);
	m_richEdit.LockWindowUpdate();
	m_richEdit.GetSel(cr);
	for(i=(int)wP; i<=(int)lP; i++)
		FormatLine(i);
	m_richEdit.SetSel(cr);
	m_richEdit.UnlockWindowUpdate();
	m_richEdit.SetEventMask(m_richEdit.GetEventMask() | ENM_PROTECTED);
	return 0;
	}

void CPaneEditorWnd::OnTimer(UINT nIDEvent) 
	{
	// TODO: Add your message handler code here and/or call default
	CDialog::OnTimer(nIDEvent);
	if(nIDEvent==ID_TIMER_UPDATEDOCSTATUS)
		{
		OnFormatLines(0,0);
		/*UpdateDocStatus();*/
		KillTimer(ID_TIMER_UPDATEDOCSTATUS);
		}
	
	}

BOOL CPaneEditorWnd::PreTranslateMessage(MSG* pMsg) 
{
	// TODO: Add your specialized code here and/or call the base class
	if(pMsg->message==WM_KEYDOWN)
		return GetParentFrame()->PreTranslateMessage(pMsg);
	
	return CDialog::PreTranslateMessage(pMsg);
}

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About the Author

Alexander Berthold
Web Developer
Germany Germany
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Web01 | 2.8.1411022.1 | Last Updated 2 Jan 2002
Article Copyright 2001 by Alexander Berthold
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