compiler.java

类c语言编译器

import com.ms.wfc.app.*;
import com.ms.wfc.core.*;
import com.ms.wfc.ui.*;
import com.ms.wfc.html.*;
import java.util.Vector;
import java.util.Stack;
import java.lang.System;
import java.lang.Character;
import java.io.*;
/**
 * This class can take a variable number of parameters on the command
 * line. Program execution begins with the main() method. The class
 * constructor is not invoked unless an object of type 'compiler' is
 * created in the main() method.
 */
public class compiler extends Form
{
	LRAnalyse lrAnalyse;
	boolean isWordFinished=false;
	//symbolTable symTable=new symbolTable();
	public compiler()
	{
		// Required for Visual J++ Form Designer support
		initForm();		
		
		// TODO: Add any constructor code after initForm call
	}
	
	/**
	 * compiler overrides dispose so it can clean up the
	 * component list.
	 */
	public void dispose()
	{
		super.dispose();
		components.dispose();
	}

	private void btnWord_click(Object source, Event e)
	{
		try{
			if(rEditSource.getText().length()==0)
			{
				MessageBox.show("请输入源程序!","提示");
				return;
			}
			lrAnalyse=new LRAnalyse();
			rEditError.setText("");
			rEditSym.setText("   符号表");
			rEditToken.setText("  token串");
			lrAnalyse.symTable.recognize(rEditSource.getText());
			for(int i=0;i<lrAnalyse.symTable.symbol.size();i++)
			{
				rEditSym.setText(rEditSym.getText()+"\n"+(String)lrAnalyse.symTable.symbol.elementAt(i)+"\t"+(String)lrAnalyse.symTable.code.elementAt(i));
			}
			for(int i=0;i<lrAnalyse.symTable.tokenSym.size();i++)
			{
				rEditToken.setText(rEditToken.getText()+"\n"+(String)lrAnalyse.symTable.tokenSym.elementAt(i)+"\t"+(String)lrAnalyse.symTable.tokenCode.elementAt(i));
			}
			if(lrAnalyse.symTable.isError)
			{
				rEditError.setText("error: line "+Integer.toString( lrAnalyse.symTable.errorLine)+",column "+Integer.toString(lrAnalyse.symTable.errorColumn));  
				isWordFinished=false;
			}
			else
			{
				isWordFinished=true;
				rEditError.setText("词法分析成功！");
			}
		}
		catch(NullPointerException ex)
		{
			MessageBox.show(ex.toString());
		}
	}
	private void btnGra_click(Object source, Event e)
	{
			if(isWordFinished)
			{
				lrAnalyse.LrAnalyse();
				lrAnalyse.analyse(false,false);
				rEditFormula.setText("   产生式");
				rEditGroup.setText("   四元组");
				for(int i=0;i<lrAnalyse.formulaVector.size();i++)
				{
					rEditFormula.setText(rEditFormula.getText()+"\n"+(String)lrAnalyse.formulaVector.elementAt(i));
				}
				for(int i=0;i<lrAnalyse.groupVector.size();i++)
				{
					rEditGroup.setText(rEditGroup.getText()+"\n"+((fourGroup)lrAnalyse.groupVector.elementAt(i)).label+":"+"("+((fourGroup)lrAnalyse.groupVector.elementAt(i)).operate+","+((fourGroup)lrAnalyse.groupVector.elementAt(i)).opFirst+","+((fourGroup)lrAnalyse.groupVector.elementAt(i)).opSecond+","+((fourGroup)lrAnalyse.groupVector.elementAt(i)).result+")"); 
				}
				if(lrAnalyse.isError)
				{
					rEditError.setText("error: line "+Integer.toString( lrAnalyse.errorLine)+",column "+Integer.toString(lrAnalyse.errorColumn));  
				}
				else 
				{
					rEditError.setText("语法及语义分析成功！");
				}
			}
			else
			{
				MessageBox.show("请先进行词法分析,并确保词法正确！");
			}
	}
	
	private void btnExit_click(Object source, Event e)
	{
		System.exit(1);
	}
	private void btnSave_click(Object source, Event e)
	{
		try{
			String fileName=new String();
			String stringTemp=new String();
			int dlgResult =saveFile.showDialog();
			if (dlgResult == DialogResult.OK)
			{
				fileName= saveFile.getFileName(); 
				FileOutputStream outputFile=new FileOutputStream(fileName);
				stringTemp=rEditGroup.getText();
				byte[] byteTemp=stringTemp.getBytes();
				outputFile.write(byteTemp);
			}
		}
		catch(IOException ex)
		{
			MessageBox.show(ex.toString(),"异常",MessageBox.OK);
		}
	}

	private void btnOpen_click(Object source, Event e)
	{
		try{
	
			String strTemp=new String();
			String fileName=new String();
			int dlgResult =openFile.showDialog();
			if (dlgResult == DialogResult.OK)
			{
				fileName= openFile.getFileName();
				FileInputStream inputFile;
				File newFile=new File(fileName);
				BufferedReader bufReader;
				inputFile=new FileInputStream(fileName);
				bufReader=new BufferedReader( new InputStreamReader(inputFile),(int)newFile.length());
				String strData;
				while((strData=bufReader.readLine())!=null)
				{
					strTemp=strTemp+strData+"\n";
				}
				rEditSource.setText(strTemp);
			}
		}
		catch(IOException ex)
		{
			MessageBox.show(ex.toString(),"异常",MessageBox.OK);
		}
	}

	private void btnStep_click(Object source, Event e)
	{
			if(isWordFinished)
			{
				lrAnalyse.LrAnalyse();
				lrAnalyse.analyse(true,true);
				rEditFormula.setText("   产生式");
				rEditGroup.setText("   四元组");
				for(int i=0;i<lrAnalyse.formulaVector.size();i++)
				{
					rEditFormula.setText(rEditFormula.getText()+"\n"+(String)lrAnalyse.formulaVector.elementAt(i));
				}
				for(int i=0;i<lrAnalyse.groupVector.size();i++)
				{
					rEditGroup.setText(rEditGroup.getText()+"\n"+((fourGroup)lrAnalyse.groupVector.elementAt(i)).label+":"+"("+((fourGroup)lrAnalyse.groupVector.elementAt(i)).operate+","+((fourGroup)lrAnalyse.groupVector.elementAt(i)).opFirst+","+((fourGroup)lrAnalyse.groupVector.elementAt(i)).opSecond+","+((fourGroup)lrAnalyse.groupVector.elementAt(i)).result+")"); 
				}
				if(lrAnalyse.isError)
				{
					rEditError.setText("error: line "+Integer.toString( lrAnalyse.errorLine)+",column "+Integer.toString(lrAnalyse.errorColumn));  
				}
				else 
				{
					rEditError.setText("语法及语义单步分析成功！");
				}
			}
			else
			{
				MessageBox.show("请先进行词法分析,并确保词法正确！");
			}
	}

	private void btnHelp_click(Object source, Event e)
	{
		String strHelp=new String();
		strHelp="1.点击'打开源程序',打开文件,或直接在文本框中写入源程序。\n2.点击'词法分析',得到符号表和token串。\n3.点击'语法及语义分析'或'语法及语义单步分析',得到四元组,建议先进行'语法及语义分析',然后再进行'语法及语义单步分析',便于观察分析过程。\n4.点击'保存四元组',保存四元组。\n5.报错窗口中的列号不计空格。\n6.随程序附带个测试文件,test1为无错源程序,test2有词法错误,test3有语法错误,test4有词法及语法错误";
		MessageBox.show(strHelp,"帮助");
	}

	private void btnSaveSource_click(Object source, Event e)
	{
		try{
			String fileName=new String();
			String stringTemp=new String();
			int dlgResult =saveFile.showDialog();
			if (dlgResult == DialogResult.OK)
			{
				fileName= saveFile.getFileName(); 
				FileOutputStream outputFile=new FileOutputStream(fileName);
				stringTemp=rEditSource.getText();
				byte[] byteTemp=stringTemp.getBytes();
				outputFile.write(byteTemp);
			}
		}
		catch(IOException ex)
		{
			MessageBox.show(ex.toString(),"异常",MessageBox.OK);
		}
	}

	/**
	 * NOTE: The following code is required by the Visual J++ form
	 * designer.  It can be modified using the form editor.  Do not
	 * modify it using the code editor.
	 */
	Container components = new Container();
	RichEdit rEditError = new RichEdit();
	Button btnWord = new Button();
	RichEdit rEditSource = new RichEdit();
	RichEdit rEditSym = new RichEdit();
	Button btnSave = new Button();
	Button btnGra = new Button();
	StatusBar staBar = new StatusBar();
	Button btnExit = new Button();
	RichEdit rEditToken = new RichEdit();
	Button btnOpen = new Button();
	RichEdit rEditFormula = new RichEdit();
	RichEdit rEditGroup = new RichEdit();
	OpenFileDialog openFile = new OpenFileDialog();
	SaveFileDialog saveFile = new SaveFileDialog();
	Button btnStep = new Button();
	Button btnHelp = new Button();
	Button btnSaveSource = new Button();

	private void initForm()
	{
		// NOTE:  This form is storing resource information in an
		// external file.  Do not modify the string parameter to any
		// resources.getObject() function call. For example, do not
		// modify "foo1_location" in the following line of code
		// even if the name of the Foo object changes: 
		//   foo1.setLocation((Point)resources.getObject("foo1_location"));

		IResourceManager resources = new ResourceManager(this, "compiler");
		this.setText("类Pascal编译器 [制作人：张博 1010311012]");
		this.setAutoScaleBaseSize(new Point(6, 12));
		this.setClientSize(new Point(892, 646));
		this.setIcon((Icon)resources.getObject("this_icon"));
		this.setMaximizeBox(false);
		this.setStartPosition(FormStartPosition.CENTER_SCREEN);

		rEditError.setFont(Font.DEFAULT_GUI);
		rEditError.setForeColor(Color.WINDOWTEXT);
		rEditError.setLocation(new Point(8, 592));
		rEditError.setSize(new Point(392, 40));
		rEditError.setTabIndex(13);
		rEditError.setText("");
		rEditError.setReadOnly(true);

		btnWord.setLocation(new Point(248, 16));
		btnWord.setSize(new Point(75, 23));
		btnWord.setTabIndex(3);
		btnWord.setText("词法分析");
		btnWord.addOnClick(new EventHandler(this.btnWord_click));

		rEditSource.setFont(Font.DEFAULT_GUI);
		rEditSource.setForeColor(Color.WINDOWTEXT);
		rEditSource.setLocation(new Point(8, 56));
		rEditSource.setSize(new Point(392, 528));
		rEditSource.setTabIndex(0);
		rEditSource.setText("");

		rEditSym.setFont(Font.DEFAULT_GUI);
		rEditSym.setForeColor(Color.WINDOWTEXT);
		rEditSym.setLocation(new Point(408, 56));
		rEditSym.setSize(new Point(88, 576));
		rEditSym.setTabIndex(9);
		rEditSym.setText("    符号表");
		rEditSym.setReadOnly(true);
		rEditSym.setScrollBars(RichEditScrollBars.VERTICAL);

		btnSave.setLocation(new Point(560, 16));
		btnSave.setSize(new Point(75, 23));
		btnSave.setTabIndex(6);
		btnSave.setText("保存四元组");
		btnSave.addOnClick(new EventHandler(this.btnSave_click));

		btnGra.setLocation(new Point(320, 16));
		btnGra.setSize(new Point(120, 23));
		btnGra.setTabIndex(4);
		btnGra.setText("语法及语义分析");
		btnGra.addOnClick(new EventHandler(this.btnGra_click));

		staBar.setBackColor(Color.CONTROL);
		staBar.setLocation(new Point(0, 646));
		staBar.setSize(new Point(892, 0));
		staBar.setTabIndex(14);
		staBar.setText("");

		btnExit.setLocation(new Point(704, 16));
		btnExit.setSize(new Point(75, 23));
		btnExit.setTabIndex(8);
		btnExit.setText("退出");
		btnExit.addOnClick(new EventHandler(this.btnExit_click));

		rEditToken.setFont(Font.DEFAULT_GUI);
		rEditToken.setForeColor(Color.WINDOWTEXT);
		rEditToken.setLocation(new Point(504, 56));
		rEditToken.setSize(new Point(88, 576));
		rEditToken.setTabIndex(10);
		rEditToken.setText("   token串");
		rEditToken.setReadOnly(true);
		rEditToken.setScrollBars(RichEditScrollBars.VERTICAL);

		btnOpen.setLocation(new Point(104, 16));
		btnOpen.setSize(new Point(75, 23));
		btnOpen.setTabIndex(1);
		btnOpen.setText("打开源程序");
		btnOpen.addOnClick(new EventHandler(this.btnOpen_click));

		rEditFormula.setFont(Font.DEFAULT_GUI);
		rEditFormula.setForeColor(Color.WINDOWTEXT);
		rEditFormula.setLocation(new Point(600, 56));
		rEditFormula.setSize(new Point(128, 576));
		rEditFormula.setTabIndex(11);
		rEditFormula.setText("    产生式");
		rEditFormula.setReadOnly(true);
		rEditFormula.setScrollBars(RichEditScrollBars.VERTICAL);

		rEditGroup.setFont(Font.DEFAULT_GUI);
		rEditGroup.setForeColor(Color.WINDOWTEXT);
		rEditGroup.setLocation(new Point(736, 56));
		rEditGroup.setSize(new Point(152, 576));
		rEditGroup.setTabIndex(12);
		rEditGroup.setText("     四元组");
		rEditGroup.setReadOnly(true);
		rEditGroup.setScrollBars(RichEditScrollBars.VERTICAL);

		/* @designTimeOnly openFile.setLocation(new Point(96, 496)); */

		/* @designTimeOnly saveFile.setLocation(new Point(16, 496)); */

		btnStep.setLocation(new Point(440, 16));
		btnStep.setSize(new Point(120, 23));
		btnStep.setTabIndex(5);
		btnStep.setText("语法及语义单步分析");
		btnStep.addOnClick(new EventHandler(this.btnStep_click));

		btnHelp.setCursor(Cursor.HELP);
		btnHelp.setLocation(new Point(632, 16));
		btnHelp.setSize(new Point(75, 23));
		btnHelp.setTabIndex(7);
		btnHelp.setText("帮助");
		btnHelp.addOnClick(new EventHandler(this.btnHelp_click));

		btnSaveSource.setLocation(new Point(176, 16));
		btnSaveSource.setSize(new Point(75, 23));
		btnSaveSource.setTabIndex(2);
		btnSaveSource.setText("保存源程序");
		btnSaveSource.addOnClick(new EventHandler(this.btnSaveSource_click));

		this.setNewControls(new Control[] {
							btnSaveSource, 
							btnHelp, 
							btnStep, 
							rEditGroup, 
							rEditFormula, 
							btnOpen, 
							btnSave, 
							rEditToken, 
							btnExit, 
							staBar, 
							btnGra, 
							rEditSym, 
							rEditSource, 
							btnWord, 
							rEditError});
	}

	/**
	 * The main entry point for the application. 
	 *
	 * @param args Array of parameters passed to the application
	 * via the command line.
	 */
	public static void main(String args[])
	{
		Application.run(new compiler());
	}
}

class fourGroup
{
	boolean notFinished;		//===出口是否填完
	int label;					//===标号
	String operate;				//===操作码
	String opFirst;				//===第一操作数
	String opSecond;			//===第二操作数
	String result;				//===结果
	public fourGroup()
	{
		notFinished=true;
		opFirst=" ";
		opSecond=" ";
		result="#";
	}
}
class attribution
{
	int trueList;				//===真出口
	int falseList;				//===假出口
	int nextList;				
	String place;
	public attribution()
	{
		trueList=0;
		falseList=0;
		nextList=0;
	}	
}
class LRAnalyse
{
	LRTable lrTable;			//===分析表
	genFormula genFormu;		//===产生式
	symbolTable symTable;		//===符号表
	Stack symStack;				//===分析栈（非终结符）
	Stack staStack;				//===分析栈（状态号）
	Stack attriStack;			//===属性栈
	Vector groupVector;			//===四元组
	Vector formulaVector;		//===产生式
	int newtempLabel;			//===标识临时变量下标
	int newLabel;				//===标识四元组下标
	int errorLine;				//===出错行号
	int errorColumn;			//===出错列号
	boolean isError;			//===是否有错
	boolean isStep;				//===是否单步
	public LRAnalyse()
	{
		isStep=false;
		formulaVector=new Vector();
		isError=false;
		errorLine=0;
		errorColumn=0;
		lrTable=new LRTable();
		genFormu=new genFormula();
		symTable=new symbolTable();
		symStack=new Stack();
		staStack=new Stack();
		staStack.push("0");
		symStack.push("$");
		newtempLabel=1;
		newLabel=100;
		attriStack=new Stack();
		groupVector=new Vector();
	}
	//===初始化除词法外的信息
	void  LrAnalyse()
	{
		isStep=false;
		formulaVector=new Vector();
		isError=false;
		errorLine=0;
		errorColumn=0;
		genFormu=new genFormula();
		symStack=new Stack();
		staStack=new Stack();
		staStack.push("0");
		symStack.push("$");
		newtempLabel=1;
		newLabel=100;