destoasm.java

java写的c 语言子集编辑器

package CWord;
import java.util.*;
import java.io.*;
/**
 *  
 * @author jjl Date 2009.1.4 10:30~`~2009 1.4 21:49
 */
public class DesToASM {
    Vector vNum=new Vector();
    int pNumId=0;
    Vector vUsr=new Vector();
    int pUsrId=0;
    StringBuffer strDes=new StringBuffer();
    StringBuffer strInt=new StringBuffer();
    StringBuffer strCode=new StringBuffer();
    static int preId=0;
    listen l=new listen();
    static int Row=0;
    public DesToASM(){
        l.clearMessage();
    }
    public void inputDesWord(StringBuffer strDes,Vector vNum,Vector vUsr){
        this.vNum=vNum;
        this.vUsr=vUsr;
        this.strDes=strDes;
        if(!invalidDesWord()){
            l.addMessage("The Input Have errors ,please input again!");
            return;
        }
    }
    protected Boolean invalidDesWord(){//test the content of C word Deal 
        l.addMessage("Now Strat invalid the user word!");
        if(strDes.length()<1||vNum.size()<1||vUsr.size()<1){
            return false;
        }
        l.addMessage("the input C deal Word is true!");
        return true;
    }
    
    char main0='0',int0='1',while0='2', if0='3',for0='4',do0='5',else0='6';
    char nequ='n',equ='e',beq='b',gqu='g',dad='d',dam='a';
    char usr='u',num='m';
    char Sym;
    
    Hashtable vUsrTable=new Hashtable();//the user definition table
    Vector vUsrElet=new Vector();//the element of the user definition table 
    //{name ,type,value}
    public void dealCGrm(){
        l.addMessage("Start Check The Grammer");
        if(!invalidDesWord()){
            l.addMessage("input the cword desstr error! please try again!");
            return ;
        }
        Sym=strDes.charAt(0);
        start();
        l.addMessage("testSuccessfully!");
    }
    protected void getTheCons(char Sym){
        switch(Sym){
                case '0':
                  //  l.addMessage("Get The main " );
                    return ;
                case '1':
                 //   l.addMessage("Get The int ");
                    return ;
                case '2':
                  //  l.addMessage("Get The while ");
                    return ;
                case '3':
                 //   l.addMessage("Get The if");
                    return ;
                case '4':
                  //  l.addMessage("Get The for ");
                    return ;
                case '5':
                 //   l.addMessage("Get The do ");
                    return ;
                case '6':
                ////    l.addMessage("Get The else");
                    return;
                default:
                   // l.addMessage("Get the split"+Sym);
                    return ;
            }
    }
    protected char getNextWord(){
        preId=preId+1;
        if(preId>=strDes.length()){
            StringBuffer s1=new StringBuffer();
            s1.append("Data Segment\n");
            this.otFile(s1);
            this.otFile(strInt);
            StringBuffer s2=new StringBuffer();
            s2.append("Data Ends\n");
            s2.append("code segment\n"+ "assume cs:code,ds:Data\n"+"start:\n");
            this.otFile(s2);
            this.otFile(strCode);
            StringBuffer s3=new StringBuffer();
            s3.append("Code Ends\n"+"end start\n");
            this.otFile(s3);
            l.addMessage("deal Grammer successfully!");
            dealerror();
        }
        if(strDes.charAt(preId)=='#'){
            Row++;//row count
            return getNextWord();
        }
        if(strDes.charAt(preId)=='-'){
            preId++;
            if(strDes.charAt(preId)=='-'){
                preId--;
             //   l.addMessage("get a minus!");
                return '-';
            }
            switch(strDes.charAt(preId)){
                case '1':
             //       l.addMessage("Get The Usr Word");
                    return usr;
                case '2':
              //      l.addMessage("Get The number ");
                    return num;
                case '3':
           //         l.addMessage("Get The not equ ");
                    return nequ;
                case '4':
           //         l.addMessage("Get The equ ");
                    return equ;
                case '5':
          //          l.addMessage("Get The below equal ");
                    return beq;
                case '6':
          //          l.addMessage("Get The greater equal ");
                    return gqu;
                case '7':return dad;
                case '8':return dam;
                default: return '?';
            }
        }
        else{
            getTheCons(Sym);
            return strDes.charAt(preId);
        }
    }
    protected char getCurWord(){
        if(strDes.charAt(preId)=='-'){
            preId++;
            switch(strDes.charAt(preId)){
                case '1':return usr;
                case '2':return num;
                case '3':return nequ;
                case '4':return equ;
                case '5':return beq;
                case '6':return gqu;
                case '7':return dad;
                case '8':return dam;
                default: return '?';
            }
        }
        else{
            return strDes.charAt(preId);
        }
    }
   
    
    protected void start(){
        if(Sym==main0){
            Sym=getNextWord();
            if(Sym=='('){
                Sym=getNextWord();
                if(Sym==')'){
                    Sym=getNextWord();
                    if(Sym=='{'){
                       Sym=getNextWord();
                        dealIntroduction();
                        if(Sym==';'){
                            Sym=getNextWord();
                            dealFlowStam();
                            if(Sym=='}'){
                                Sym=getNextWord();
                               return;
                          }
                          else{
                                l.addMessage("less a } error at row"+Row);
                               dealerror();
                           }
                        }
                      else{
                            
                            l.addMessage("less ; error at row"+Row);
                            dealerror();
                        }
                    }
                    else{
                        l.addMessage("less a { error at row"+Row);
                        dealerror();
                    }
                }
                else{
                    l.addMessage("less a ) error at row"+Row);
                    dealerror();
                }
            }
            else{
                l.addMessage("less a ( error ar row"+Row);
                dealerror();
            }
        }else{
            l.addMessage("not main start error at row "+Row);
            dealerror();
        }
    }
    
    protected Boolean dealBlock(){
       
      //  l.addMessage("Start To Anaysics<> !");
        if(!dealIfStam()){
          //  l.addMessage("not a start to deal!");
         if(!dealCal()){
          //   l.addMessage("not a <鐠у