filedlgview.cpp

编译原理习题vc代码

// FileDlgView.cpp : implementation of the CFileDlgView class
//

#include "stdafx.h"
#include "FileDlg.h"

#include "FileDlgDoc.h"
#include "FileDlgView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CFileDlgView

IMPLEMENT_DYNCREATE(CFileDlgView, CEditView)

BEGIN_MESSAGE_MAP(CFileDlgView, CEditView)
	//{{AFX_MSG_MAP(CFileDlgView)
	ON_COMMAND(ID_GRAMMA_ANALYSIS, OnGrammaAnalysis)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CEditView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CEditView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CEditView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFileDlgView construction/destruction

CFileDlgView::CFileDlgView()
{
	// TODO: add construction code here

}

CFileDlgView::~CFileDlgView()
{
}

BOOL CFileDlgView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	BOOL bPreCreated = CEditView::PreCreateWindow(cs);
	cs.style &= ~(ES_AUTOHSCROLL|WS_HSCROLL);	// Enable word-wrapping

	return bPreCreated;
}

/////////////////////////////////////////////////////////////////////////////
// CFileDlgView drawing

void CFileDlgView::OnDraw(CDC* pDC)
{
	CFileDlgDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CFileDlgView printing

BOOL CFileDlgView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default CEditView preparation
	return CEditView::OnPreparePrinting(pInfo);
}

void CFileDlgView::OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo)
{
	// Default CEditView begin printing.
	CEditView::OnBeginPrinting(pDC, pInfo);
}

void CFileDlgView::OnEndPrinting(CDC* pDC, CPrintInfo* pInfo)
{
	// Default CEditView end printing
	CEditView::OnEndPrinting(pDC, pInfo);
}

/////////////////////////////////////////////////////////////////////////////
// CFileDlgView diagnostics

#ifdef _DEBUG
void CFileDlgView::AssertValid() const
{
	CEditView::AssertValid();
}

void CFileDlgView::Dump(CDumpContext& dc) const
{
	CEditView::Dump(dc);
}

CFileDlgDoc* CFileDlgView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CFileDlgDoc)));
	return (CFileDlgDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CFileDlgView message handlers

 

void CFileDlgView::OnGrammaAnalysis() 
{
	// TODO: Add your command handler code here
    Grammacheck dlg;
    ErrorDialog err_dlg;
    int tmp;
	g_count=0;
	if(dlg.DoModal()==IDOK)
	{
		sprintf(buf,"%s",dlg.m_express);
	}
	g_value=buf[g_count];
	while(g_value==' ')
	{
	     g_count++;
		 g_value=buf[g_count];
	}
	tmp=E();
    if(tmp)
	{
		if(err_dlg.DoModal()==IDOK)
		   OnGrammaAnalysis() ;
	}
	else
	{
        RetryDialog retry_dlg;
		if(retry_dlg.DoModal()==IDOK)
               OnGrammaAnalysis() ;     
	}
}

int CFileDlgView::E()
{
   if(T())
	   return 1;
   if(E1())
	   return 1;
   return 0;
}
int CFileDlgView::T()
{
	if(F())
		return 1;
	if(T1())
		return 1;
     return 0;
}
int CFileDlgView::E1()
{
     if(g_value=='+')
	 {
		 g_count++;
		 g_value=buf[g_count];
		while(g_value==' ')
		{
			g_count++;
			g_value=buf[g_count];
		}
		 if(T())
			 return 1;
		 if(E1())
			 return 1;
         
	 }
	 else if(g_value=='-')
	 {
		 g_count++;
		 g_value=buf[g_count];
		 while(g_value==' ')
		 {
			g_count++;
			g_value=buf[g_count];
		 }
		 if(T())
			 return 1;
		 if(E1())
			 return 1;
         
	 }
     return 0;
}

int CFileDlgView::F()
{
	int tmp;
	tmp=V();
	if(!tmp)
		;
	else
	if(g_value=='(')
	{
		g_count++;
		g_value=buf[g_count];
		while(g_value==' ')
		{
			g_count++;
			g_value=buf[g_count];
		}
		if(E())
			return 1;
		if(g_value==')')
		{
		   g_count++;
		   g_value=buf[g_count];
      	   while(g_value==' ')
		   {
			g_count++;
			g_value=buf[g_count];
		   }

		}
		else 
		{
			return 1;
		}
	}
	else 
		return 1;

   return 0;
}

int CFileDlgView::T1()
{
	if(g_value=='*')
	{
		g_count++;
		g_value=buf[g_count];
		while(g_value==' ')
		{
			g_count++;
			g_value=buf[g_count];
		}
		if(F())
			return 1;
		if(T1())
			return 1;

	}
	else if(g_value=='/')
	{
		g_count++;
		g_value=buf[g_count];
		while(g_value==' ')
		{
			g_count++;
			g_value=buf[g_count];
		}
		if(F())
			return 1;
		if(T1())
			return 1;

	}
   return 0;
}

int CFileDlgView::V()
{
	if(P())
		return 1;
   return 0;
}

int CFileDlgView::P()
{
	if(g_value>='A'&&g_value<='Z')
	{
		g_count++;
		g_value=buf[g_count];
		while(g_value==' ')
		{
			g_count++;
			g_value=buf[g_count];
		}
		return 0;
	}

    else 
	    return 1;
}