PL/0编译器(java version) - Err.java

   1:  package compiler;

   2:   

   3:  import java.io.BufferedWriter;

   4:   

   5:  public class Err {

   6:   

   7:      public  int errCount = 0;

   8:      public static final String[] errInfo = new String[]{

   9:          "",

  10:          "1.应是=而不是:=",

  11:          "2.=后应为数",

  12:          "3.标识符后应为=",

  13:          "4.const,var,procedure 后应为标识符",

  14:          "5.漏掉逗号或分号",

  15:          "6.过程说明后的符号不正确",

  16:          "7.应为语句",

  17:          "8.程序体内语句后的符号不正确",

  18:          "9.应为句号",

  19:          "10.语句之间漏分号",

  20:          "11.标识符未说明",

  21:          "12.不可向常量或过程名赋值",

  22:          "13.应为赋值运算符:=",

  23:          "14.call后应为标识符",

  24:          "15.不可调用常量或变量",

  25:          "16.应为then",

  26:          "17.应为分号或end",

  27:          "18.应为do",

  28:          "19.语句后的符号不正确",

  29:          "20.应为关系运算符",

  30:          "21.表达式内不可有过程标识符",

  31:          "22.漏右括号",

  32:          "23.因子后不可为此符号",

  33:          "24.表达式不能以此符号开始",

  34:          "25.这个数太大",

  35:          "26.Not Defined Yet",

  36:          "27.Not Defined Yet",

  37:          "28.Not Defined Yet",

  38:          "29.Not Defined Yet",

  39:          "30.Not Defined Yet",    

  40:          "31.数越界",

  41:          "32.嵌套层数过大",

  42:          "33.格式错误，应为右括号",

  43:          "34.格式错误，应为左括号",

  44:          "35.read()中的变量未声明"

  45:      };

  46:   

  47:      /**

  48:       * 打印错误信息

  49:       * @param errcode 

  50:       */

  51:      public  void report(int errcode,int line) {

  52:          try {

  53:              System.out.println("*** line( "+line+"):" + errInfo[errcode] + "  ***");

  54:              PL0.errWriter.write("*** line ( "+line+"):"+ errInfo[errcode] + "  ***\n");

  55:              errCount++;

  56:          }catch(Exception e){

  57:              e.printStackTrace();

  58:              System.out.println("***print error infomation meet with error***");

  59:          }

  60:   

  61:      }

  62:  }