compileframe.java

一个小的编译器,可以模仿类似c语言的语法。很适合初级java学习者

import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.awt.event.*;
import java.awt.datatransfer.*;


public class CompileFrame extends JFrame
implements ActionListener

{
	
	final int COLUMN = 15;
	final int LINE = 70;
	JMenuBar menuBar;
	JMenu fileMenu,operationMenu,toolMenu,helpMenu;
	JMenuItem openItem,saveItem,compileItem,findErrorItem,copyItem,cutItem,pasteItem,helpItem,introduceItem,middleCodeItem;
	
	
	JLabel textLabel;
	JPanel textPanel;
	public static TextArea textArea;
	
	JPanel buttonPanel;
	JPanel buttonlabelPanel;
	JLabel buttonLabel;
	JButton compileButton;
	JButton findErrorButton;
	JButton cutButton;
	JButton copyButton;
	JButton pasteButton;

	
	JLabel errorLabel;
	JPanel errorPanel;
	public static TextArea errorArea;
	
	FileDialog openDialog;
	FileDialog saveDialog;
	
	
	byte buffer[];
	int bufferLength;
	
	Clipboard clipboard = null;
	
	WordAnalyze wordAnalyze;
	ParsingMethod parsingMethod;
	MiddleCode middleCode;
	
	HelpFrame helpFrame;
	IntroduceFrame introduceFrame;
	MiddleCodeFrame middleCodeFrame;
	
	
	public CompileFrame()
	{
		setTitle("COMPILER");
		helpFrame = new HelpFrame();
		introduceFrame = new IntroduceFrame();
		middleCodeFrame = new MiddleCodeFrame();
		
		buffer = new byte[1000000];
		
		
		///////////////set the Menu///////////////		
		///////////MenuBar//////
		JMenuBar menuBar = new JMenuBar();
		setJMenuBar(menuBar);
		
		////////////Menu////////
		JMenu fileMenu = new JMenu("File");
		fileMenu.setMnemonic('F');
		JMenu operationMenu = new JMenu("Operation");
		operationMenu.setMnemonic('O');
		JMenu toolMenu = new JMenu("Tool");
		toolMenu.setMnemonic('T');
		JMenu helpMenu = new JMenu("Help");
		helpMenu.setMnemonic('H');
		
	
		/////////MenuItem/////////
		JMenuItem openItem = new JMenuItem("Open",'O');
		openItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_O,ActionEvent.CTRL_MASK));
		JMenuItem saveItem = new JMenuItem("Save",'S');
		saveItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_S,ActionEvent.CTRL_MASK));
			
		
		JMenuItem compileItem = new JMenuItem("Compile");
		compileItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_R,ActionEvent.CTRL_MASK));
		JMenuItem findErrorItem = new JMenuItem("FindError",'F');
		findErrorItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_F,ActionEvent.CTRL_MASK));
			
		JMenuItem copyItem = new JMenuItem("Copy",'C');
		copyItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_C,ActionEvent.CTRL_MASK));
		JMenuItem cutItem = new JMenuItem("Cut");
		cutItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_X,ActionEvent.CTRL_MASK));
		JMenuItem pasteItem = new JMenuItem("Paste");
		pasteItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_V,ActionEvent.CTRL_MASK));
			
		JMenuItem helpItem = new JMenuItem("Help");
		helpItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_H,ActionEvent.CTRL_MASK));
		JMenuItem introduceItem = new JMenuItem("Introduce");
		introduceItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_I,ActionEvent.CTRL_MASK));	
		JMenuItem middleCodeItem = new JMenuItem("MiddleCode");
		middleCodeItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_M,ActionEvent.CTRL_MASK));
		
		//////add MenuItem///////
		fileMenu.add(openItem);
		fileMenu.addSeparator();
		fileMenu.add(saveItem);
		
		operationMenu.add(compileItem);
		operationMenu.addSeparator();
		operationMenu.add(findErrorItem);
		
		toolMenu.add(copyItem);
		toolMenu.addSeparator();
		toolMenu.add(cutItem);
		toolMenu.addSeparator();
		toolMenu.add(pasteItem);
		
		helpMenu.add(helpItem);
		helpMenu.add(introduceItem);
		helpMenu.add(middleCodeItem);
		
		
		
		menuBar.add(fileMenu);
		menuBar.add(operationMenu);
		menuBar.add(toolMenu);
		menuBar.add(helpMenu);
		
		
	
		/////button area/////
		
		
		buttonlabelPanel = new JPanel();
		buttonPanel = new JPanel();
		buttonPanel.setLayout(new GridLayout(1,5));
		
		buttonLabel= new JLabel("keyboard shortcuts");
		compileButton = new JButton("Compile");
		findErrorButton = new JButton("FindError");
		copyButton = new JButton("Copy");
		cutButton = new JButton("Cut");
		pasteButton = new JButton("Paste");
		
		buttonPanel.add(compileButton);
		buttonPanel.add(findErrorButton);
		buttonPanel.add(copyButton);
		buttonPanel.add(cutButton);
		buttonPanel.add(pasteButton);
		
		buttonlabelPanel.setLayout(new BorderLayout());
		buttonlabelPanel.add(buttonLabel,BorderLayout.NORTH);
		buttonlabelPanel.add(buttonPanel,BorderLayout.CENTER);
		
		////error text//////////////
		
		errorLabel = new JLabel("error area");
		errorPanel = new JPanel(new BorderLayout());
		
		errorArea = new TextArea(COLUMN/2,LINE);
		errorArea.setEditable(false);
		errorPanel.add(errorArea,BorderLayout.CENTER);
		errorPanel.add(errorLabel,BorderLayout.NORTH);
		
		
		
		
		
		
		///////text area////////
		textLabel = new JLabel("TextArea:the place for your programme");
		textPanel = new JPanel();
		textPanel.setLayout(new BorderLayout());
		
		textArea = new TextArea(COLUMN,LINE);
		textArea.setEditable(true);
		textPanel.add(textArea,BorderLayout.CENTER);
		
		textPanel.add(textLabel,BorderLayout.NORTH);	
		
		
		
		/////////clipboard////////////
		clipboard=getToolkit().getSystemClipboard();
	
		
		////////add into frame//////////
		
		getContentPane().setLayout(new BorderLayout());
		getContentPane().add(textPanel,BorderLayout.CENTER);
		getContentPane().add(errorPanel,BorderLayout.SOUTH);
		getContentPane().add(buttonlabelPanel,BorderLayout.NORTH);
	
	
		
		
		
		//////////file dialog////////////////
		openDialog = new FileDialog(this,"open",FileDialog.LOAD);
		saveDialog = new FileDialog(this,"save",FileDialog.SAVE);
		
		////////the part of wordanalyzing//////////
		wordAnalyze = new  WordAnalyze();
		
		////////the part of ParsingMethod//////////////
		parsingMethod = new ParsingMethod();
		
		//////////////////////////////////////////////
		middleCode = new MiddleCode();
		
		///////add actionlistener//////////////
		
		openItem.addActionListener(this);
		saveItem.addActionListener(this);
		copyItem.addActionListener(this);
		cutItem.addActionListener(this);
		pasteItem.addActionListener(this);
		helpItem.addActionListener(this);
		introduceItem.addActionListener(this);
		middleCodeItem.addActionListener(this);
		
		
		compileButton.addActionListener(this);
		findErrorButton.addActionListener(this);
		cutButton.addActionListener(this);
		copyButton.addActionListener(this);
		pasteButton.addActionListener(this);
		
		
		///////add windowlistener////////////
		addWindowListener
		(
			new WindowAdapter()
			{
				public void windowClosing(WindowEvent we)
				{
					System.exit(0);
				}
			}
		);
	}
	///////////main/////////////
	public static void main(String[] args)
	{
		CompileFrame compileFrame = new CompileFrame();
		compileFrame.setVisible(true);
		compileFrame.pack();
	}
	

	
	public void actionPerformed(ActionEvent e)
	{
		
		String actionCommand = e.getActionCommand();
		
		///////////the MenuItem/////////
		if(e.getSource() instanceof JMenuItem)
		{
			if("Open".equals(actionCommand))
			{
				openDialog.setVisible(true);
				try
				{
					File file = new File(openDialog.getDirectory(),openDialog.getFile());
					FileInputStream fileInputStream = new FileInputStream(file);
					bufferLength = fileInputStream.read(buffer);
					fileInputStream.close();
						
				}
				catch(Exception e2)
				{
					
				}
				
				String string = new String(buffer);
				textArea.setText(string);
				
			}
			else
			if("Save".equals(actionCommand))
			{
				saveDialog.setVisible(true);
				try
				{
					File file = new File(saveDialog.getDirectory(),saveDialog.getFile());
					FileWriter fileWriter = new FileWriter(file);
					BufferedWriter bufferWriter = new BufferedWriter(fileWriter);
					String string = textArea.getText();
					bufferWriter.write(string,0,string.length());
					bufferWriter.flush();
					fileWriter.close();
				}
				catch(Exception e2)
				{
					
				}
				
			}
			else
			if("Copy".equals(actionCommand))
			{
				copy();
			}
			else
			if("Cut".equals(actionCommand))
			{
				cut();
			}
			else
			if("Paste".equals(actionCommand))
			{
				paste();
			}
			else
			if("Compile".equals(actionCommand))
			{
				///////////////////////////////
				errorArea.setText("");
				
				wordAnalyze.wordAnalyzeMethod();
				parsingMethod.parsingAnalyzeMethod();
				
				
			}
			else
			if("FindError".equals(actionCommand))
			{
				
			}
			else
			if("Help".equals(actionCommand))
			{
				helpFrame.setVisible(true);	
			}
			else
			if("Introduce".equals(actionCommand))
			{
				introduceFrame.setVisible(true);
			}
			else
			if("MiddleCode".equals(actionCommand))
			{
				middleCodeFrame.setVisible(true);
			}
			
		}
		
		//////the button///////
		else 
		if(e.getSource() instanceof JButton)
		{
			if("Compile".equals(actionCommand))
			{
			
				///////////////////////////////
				errorArea.setText("");
				
				wordAnalyze.wordAnalyzeMethod();
				parsingMethod.parsingAnalyzeMethod();
				
			/*	if(parsingMethod.successFlag)
				{
					middleCode.middleCodeCreate();
				}*/
			/*	if(parsingMethod.successFlag)
				{
					middleCode.middleCodeCreate();
				/*	try
					{
						File file = new File("help","middlecode.txt");
						if(!file.exists())
						{
							System.err.println("middlecode.txt text is not existing");
						}
						FileWriter fileWriter = new FileWriter(file);
						BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
						String string = MiddleCodeFrame.textArea.getText();
						bufferedWriter.write(string,0,string.length());
						bufferedWriter.flush();
						fileWriter.close();
			
					}
					catch(Exception e3)
					{
			
					}
				}*/
				
				
				
			}
			else
			if("FindError".equals(actionCommand))
			{
				
			}
			else
			if("Copy".equals(actionCommand))
			{
				copy();
			}
			else
			if("Cut".equals(actionCommand))
			{
				cut();	
			}
			else
			if("Paste".equals(actionCommand))
			{
				paste();
			}
		}
		
	}
	
	public void copy()
	{
		String string = textArea.getSelectedText();
		StringSelection text = new StringSelection(string);
		clipboard.setContents(text,null);
		
		
	}
	public void cut()
	{
		String string = textArea.getSelectedText();
		StringSelection text = new StringSelection(string);
		clipboard.setContents(text,null);
		int startPosition = textArea.getSelectionStart();
		int endPosition = textArea.getSelectionEnd();
		textArea.replaceRange("",startPosition,endPosition);
		
		
		
		
	}
	public void paste()
	{
		Transferable cnt = clipboard.getContents(this);
		DataFlavor flv =DataFlavor.stringFlavor;
		if(cnt.isDataFlavorSupported(flv))
		{
			try
			{
				String string;
				string = (String)cnt.getTransferData(flv);
				textArea.append(string);
				
			}
			catch(Exception ee)
			{
				
			}
		}
		
	}
	
	
	
	
}