LL(1)文法的判断，递归下降分析程序

void ParseT(){

    switch(lookahead){

        case (,i:

            ParseF();

            ParseT'();

            break;

        default:

             printf("语法错误！ \n");

            exit(0);

    }

 }

void ParseT'(){

    switch(lookahead){

         case *:

             MatchToken(*);

             ParseF();

            ParseT'();

            break;

         case #,),+:

            break;

         default:

            printf("语法错误！ \n");

            exit(0);

     }

 }

  

 void ParseE(){

     switch(lookahead){

         case (,i:

             ParseT();

             ParseE'();

             break;

          default:

          printf("语法错误！ \n");

           exit(0);

   }

}

 void ParseE'(){

    switch(lookahead){

        case +:

             MatchToken(+);

             ParseT();

          ParseE'();

          break;

         case #,):

            break;

        default:

            printf("语法错误！ \n");

            exit(0);

    }

 }

 

 void ParseF(){

     switch(lookahead){

         case (:

             MatchToken(();

            ParseE()

            MatchToken());

            break;

        case i:

            MatchToken(i);

            break;

       default:

            printf("语法错误！ \n");

            exit(0);

  }

}

void ParseT(){
    switch(lookahead){
        case (,i:
            ParseF();
            ParseT'();
            break;
        default:
             printf("语法错误！ \n");
            exit(0);
    }
 }
void ParseT'(){
    switch(lookahead){
         case *:
             MatchToken(*);
             ParseF();
            ParseT'();
            break;
         case #,),+:
            break;
         default:
            printf("语法错误！ \n");
            exit(0);
     }
 }

 void ParseE(){
     switch(lookahead){
         case (,i:
             ParseT();
             ParseE'();
             break;
          default:
          printf("语法错误！ \n");
           exit(0);
   }
}
 void ParseE'(){
    switch(lookahead){
        case +:
             MatchToken(+);
             ParseT();
          ParseE'();
          break;
         case #,):
            break;
        default:
            printf("语法错误！ \n");
            exit(0);
    }
 }

 void ParseF(){
     switch(lookahead){
         case (:
             MatchToken(();
            ParseE()
            MatchToken());
            break;
        case i:
            MatchToken(i);
            break;
       default:
            printf("语法错误！ \n");
            exit(0);
  }
}