operandanalyzerdlg.cpp

一个用VC++写的算符优先分析程序

// OperandAnalyzerDlg.cpp : implementation file
//


#include "stdafx.h"
#include "OperandAnalyzer.h"
#include "OperandAnalyzerDlg.h"
#include "grammar.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// COperandAnalyzerDlg dialog

COperandAnalyzerDlg::COperandAnalyzerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(COperandAnalyzerDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(COperandAnalyzerDlg)
	m_subaOPG = _T("");
	m_pedit = _T("");
	m_sedit = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void COperandAnalyzerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(COperandAnalyzerDlg)
	DDX_Control(pDX, IDC_LIST4, m_analyse);
	DDX_Control(pDX, IDC_LIST3, m_first_table);
	DDX_Control(pDX, IDC_LIST2, m_LastVT);
	DDX_Control(pDX, IDC_LIST1, m_firstVT);
	DDX_Text(pDX, IDC_EDIT3, m_pedit);
	DDX_Text(pDX, IDC_EDIT2, m_sedit);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(COperandAnalyzerDlg, CDialog)
	//{{AFX_MSG_MAP(COperandAnalyzerDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON3, OnAboutDlg)
	ON_BN_CLICKED(IDC_BUTTON1, OnFileOpen)
	ON_BN_CLICKED(IDC_BUTTON6, OnFirstVTSet)
	ON_BN_CLICKED(IDC_BUTTON5, OnLastVTSet)
	ON_BN_CLICKED(IDC_BUTTON2, OnOPGMatrix)
	ON_BN_CLICKED(IDC_BUTTON4, OnAnalyzeString)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// COperandAnalyzerDlg message handlers

BOOL COperandAnalyzerDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void COperandAnalyzerDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void COperandAnalyzerDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR COperandAnalyzerDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void COperandAnalyzerDlg::OnAboutDlg() 
{
	// TODO: Add your control notification handler code here
	CAboutDlg myAboutDlg;
	myAboutDlg.DoModal();
	
}

void COperandAnalyzerDlg::OnFileOpen() 
{
	// TODO: Add your control notification handler code here
	CFileDialog  dlg(TRUE, NULL, NULL, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
		"Text Files(*.txt, *.src)|*.txt; *.src");
	if(dlg.DoModal() == IDOK)
	{
		m_strfilenamepath = dlg.GetPathName();
		m_fileinput.open((char *)m_strfilenamepath.GetBuffer(0), ios::nocreate);
		if(m_fileinput.fail())
		{
              
			  m_pedit = "无法打开!!!\r\n或是错误文件名\r\n或是此软件出现了问题，建议\r\n在编辑框中直接输入测试程序";
			  UpdateData(false);
		}
		else
		{
			  m_pedit = "";
			  char str[61];
			  do
			  {
				 m_fileinput.getline(str,60, '\n');
				 m_pedit += str;
				 if(str[strlen(str) - 2] == '\r')
					 m_pedit += "\n";
				  else
					  m_pedit += "\r\n";
			  }while(!m_fileinput.eof());
			  UpdateData(false);
			  m_fileinput.close();
		}
	}		
	
}



void COperandAnalyzerDlg::OnFirstVTSet() 
{
	// TODO: Add your control notification handler code here
	if(m_pedit.IsEmpty())
		::AfxMessageBox("还未读入算符优先文法!");
	else
	{
	UpdateData(true);
   	Cgrammar grammar(m_pedit);

	grammar.delete_list(m_firstVT);

	grammar.getFirstVT(m_firstVT);
	UpdateData(false);
	grammar.~Cgrammar();	
	}
	
}

void COperandAnalyzerDlg::OnLastVTSet() 
{
	// TODO: Add your control notification handler code here
	if(m_pedit.IsEmpty())
		::AfxMessageBox("还未读入算符优先文法!");
	else
	{
	UpdateData(true);
	Cgrammar grammar(m_pedit);

	grammar.delete_list(m_LastVT);

	grammar.LastVT(m_LastVT);
	UpdateData(false);
	grammar.~Cgrammar();
	}
	
}

//*************************************************************
//生成算符优先矩阵
//
//*************************************************************
void COperandAnalyzerDlg::OnOPGMatrix() 
{
	// TODO: Add your control notification handler code here
	if(m_pedit.IsEmpty())
		::AfxMessageBox("还未读入算符优先文法!");
	else
	{
	UpdateData(true);
    Cgrammar grammar(m_pedit);
	grammar.add_produce();

	grammar.delete_list(m_firstVT);
	grammar.delete_list(m_LastVT);
	grammar.delete_list(m_first_table);

	grammar.getFirstVT(m_firstVT);
	grammar.LastVT(m_LastVT);

	grammar.first_table_head(m_first_table);
	grammar.first_table(m_first_table, m_firstVT, m_LastVT);
	UpdateData(false);
	grammar.~Cgrammar();	
	}
	
}

//*************************************************************
//分析一个输入的待归约串
//
//*************************************************************
void COperandAnalyzerDlg::OnAnalyzeString() 
{
	// TODO: Add your control notification handler code here
	if(m_pedit.IsEmpty())
		::AfxMessageBox("还未读入算符优先文法!", MB_OK);
	else
	{
	UpdateData(true);
    Cgrammar grammar(m_pedit); //定义文法变量
	grammar.add_produce();

	grammar.delete_list(m_firstVT); //清空各个列表中的内容
	grammar.delete_list(m_LastVT);
	grammar.delete_list(m_first_table);
	grammar.delete_list(m_analyse);

	grammar.getFirstVT(m_firstVT); //构建firstVT,LastVT,first_table(优先表)
	grammar.LastVT(m_LastVT);
	grammar.first_table_head(m_first_table);
	grammar.first_table(m_first_table, m_firstVT, m_LastVT);

	grammar.delete_blank(m_sedit); //消去空格
	grammar.first_analyse_head(m_analyse, m_sedit); //构建分析表
	grammar.first_analyse(m_analyse, m_sedit, m_first_table);
	
	UpdateData(false);
	grammar.~Cgrammar();
	}
}