词法分析

开发平台：
Java

Jm2.java：源码内容
							
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JToolBar;
import javax.swing.JButton;
import javax.swing.JSlider;
import javax.swing.JSplitPane;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JOptionPane;
import javax.swing.JFileChooser;
import java.io.File;
import java.io.IOException;
import java.util.Stack;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.JTree;
import javax.swing.JPanel;
import java.awt.Dimension;
import javax.swing.JTabbedPane;
import javax.swing.event.AncestorEvent;
import javax.swing.event.AncestorListener;
/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Jm2 extends JFrame {
        String filename = new String();
    BorderLayout borderLayout1 = new BorderLayout();
    JMenuBar jMenuBar1 = new JMenuBar();
    JMenu jMenuFile = new JMenu();
    JMenu jMenuRun = new JMenu();
    JMenu jMenuHelp = new JMenu();
    JMenuItem jMenuOpen = new JMenuItem();
    JSplitPane jSplitPane1 = new JSplitPane();
    JScrollPane jScrollPane1 = new JScrollPane();
    JMenuItem jMenuItem1 = new JMenuItem();
    JTabbedPane jTabbedPane1 = new JTabbedPane();
    public Jm2() {
        try {
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }
    private void jbInit() throws Exception {
        getContentPane().setLayout(borderLayout1);
        this.setJMenuBar(jMenuBar1);
        this.setTitle("句法分析器");
        jMenuFile.setText("File");
        jMenuRun.setText("Run");
        jMenuHelp.setText("Help");
        jMenuOpen.setText("Open");
        jMenuOpen.addActionListener(new Jm2_jMenuOpen_actionAdapter(this));
        jMenuItem1.setText("Run");
        jMenuItem1.addActionListener(new Jm2_jMenuItem1_actionAdapter(this));
        jMenuBar1.add(jMenuFile);
        jMenuBar1.add(jMenuRun);
        jMenuBar1.add(jMenuHelp);
        jMenuFile.add(jMenuOpen);
        this.getContentPane().add(jSplitPane1, java.awt.BorderLayout.CENTER);
        jSplitPane1.add(jScrollPane1, JSplitPane.LEFT);
        jSplitPane1.add(jTabbedPane1, JSplitPane.RIGHT);
        jMenuRun.add(jMenuItem1);
    }
    public static void main(String[] args){
        Jm2 f = new Jm2();
        f.setSize(640,480);
        f.setVisible(true);
    }
    public void jMenuOpen_actionPerformed(ActionEvent e) {
        JFrame f = new JFrame();
        JFileChooser jFileChooser1 = new JFileChooser("c:\Documents and Settings\");
        int result = jFileChooser1.showOpenDialog(f);
        if(result == JFileChooser.APPROVE_OPTION){
            File file = jFileChooser1.getSelectedFile();
            //是文件而非目录则读
            if (file.isFile()) {
                FileTest ft = new FileTest();
                try {
                    //System.out.println("nn" + file.getPath());
                        filename = file.getPath();
                    ft.ReadFile(filename);
                    JTextPane jTextPane = new JTextPane();
                    jTextPane.setText(ft.getBuffer());
                    //添加JTEXTPANE
                    jScrollPane1.getViewport().add(jTextPane);
                  } catch (IOException ioe) {
                    JOptionPane.showMessageDialog(this, "FILE ERROR",
                                                  "FILE ERROR",
                                                  JOptionPane.ERROR_MESSAGE);
                  } //catch
                  try{
                  //调用PARSING
                  }catch(IllegalArgumentException err){
                    JOptionPane.showMessageDialog(this, "FILE IS NULL", "FILE ERROR",
                                         JOptionPane.ERROR_MESSAGE);
                 }
              }//IF ifFile()
              else
                  JOptionPane.showMessageDialog(this, e.getActionCommand()
                     + "The type of File is not allowed", "ERROR", JOptionPane.ERROR_MESSAGE);
        }//if result
    }
    public DefaultMutableTreeNode getRoot(String result){
        DefaultMutableTreeNode root = new  DefaultMutableTreeNode();
        DefaultMutableTreeNode e, e1;
        Stack s1 = new Stack();
        Stack s2 = new Stack();
        String a;
        String lB= new String("(");
        String rB = new String(")");
        String p = new String("+");
        String[] ss = result.split(" ");
        //s1.push(new DefaultMutableTreeNode(ss[0]));
        for(int i = 0;i < ss.length;i++){
                a = ss[i];
                //左括
                if(a.equals(lB)){
                        s2.push(a);
                }
                //"+"
                /*符号不出栈*/
                else if(a.equals(p)){
                        //出栈
                        e = (DefaultMutableTreeNode)s1.pop();
                        e1 = (DefaultMutableTreeNode)s1.pop();
                        e1.add(e);
                        s1.push(e1);
                }
                //右括,都出栈
                else if(a.equals(rB)){
                        s2.pop();
                        e = (DefaultMutableTreeNode)s1.pop();
                        e1 = (DefaultMutableTreeNode)s1.pop();
                        e1.add(e);
                        s1.push(e1);
                }
                //树的结点内容
                else 
                s1.push(new  DefaultMutableTreeNode(a));
        }
        root = (DefaultMutableTreeNode)s1.pop();
        return root;
    }
    public void jMenuItem1_actionPerformed(ActionEvent e) {
       /* DefaultMutableTreeNode root = this.getRoot();
       JTree tree = new JTree(root);
       //tree.setPreferredSize(new Dimension(200, 300));
       jScrollPane2.getViewport().add(tree);*/
        Parsing p = new Parsing();
        String result = new String();
        JTree[] tree = new JTree[20];
        JScrollPane[] js = new JScrollPane[20];
        String[] ss;	//存放每种分析结果的字符串
        String a;
                try {
                        result = p.BottomUp(filename);
                        ss = result.split("nn");
                        for(int i = 0;i<ss.length;i++){
                                a = ss[i];
                                int k = a.indexOf("S");
                                result = a.substring(k);
                                tree[i] = new JTree(this.getRoot(result));
                                js[i] = new JScrollPane();
                                js[i].getViewport().add(tree[i]);
                                jTabbedPane1.addTab((new Integer(i + 1)).toString(), js[i]);
                        }
                        //result = new String("S ( vp ( vp ( v(穿) ) + np ( ap ( a(好) ) + np ( n(衣服) ) ) ) )");
                } catch (IOException e1) {
                        // TODO Auto-generated catch block
                        e1.printStackTrace();
                }
    }
}
class Jm2_jMenuItem1_actionAdapter implements ActionListener {
    private Jm2 adaptee;
    Jm2_jMenuItem1_actionAdapter(Jm2 adaptee) {
        this.adaptee = adaptee;
    }
    public void actionPerformed(ActionEvent e) {
        adaptee.jMenuItem1_actionPerformed(e);
    }
}
class Jm2_jMenuOpen_actionAdapter implements ActionListener {
    private Jm2 adaptee;
    Jm2_jMenuOpen_actionAdapter(Jm2 adaptee) {
        this.adaptee = adaptee;
    }
    public void actionPerformed(ActionEvent e) {
        adaptee.jMenuOpen_actionPerformed(e);
    }
}

						