grammer/pre_scanner.jj

   1 /* pre_scan.jj Process the backslash at the end of line */
   2
   3 options {
   4         STATIC = false;
   5         JAVA_UNICODE_ESCAPE = true;
   6 }
   7
   8 PARSER_BEGIN(PreScanner)
   9 package edu.uci.eecs.specCompiler.grammerParser.preScanner;
  10
  11 import java.io.FileInputStream;
  12 import java.io.FileNotFoundException;
  13 import java.io.InputStream;
  14 import java.io.ByteArrayInputStream;
  15 import java.util.ArrayList;
  16
  17         public class PreScanner {
  18                 public static void main(String[] argvs)
  19                 throws ParseException, TokenMgrError {
  20                         try {
  21                                 FileInputStream fis = new FileInputStream("./grammer/spec.txt");
  22                                 PreScanner preScanner = new PreScanner(fis);
  23                                 String code = preScanner.ProcessEndBackslash();
  24                                 System.out.println(code);
  25                                 System.out.println("Finished!");
  26                         } catch (FileNotFoundException e) {
  27                                 e.printStackTrace();
  28                         }
  29                 }
  30         }
  31 PARSER_END(PreScanner)
  32
  33 SKIP : {
  34         <"\\\n">
  35 }
  36
  37 TOKEN : {
  38         <ANY: ~[]>
  39 }
  40
  41 String ProcessEndBackslash() :
  42 {
  43         StringBuilder sb;
  44         String str;
  45 }
  46 {
  47         { sb = new StringBuilder(); }
  48         (str = <ANY>.image { sb.append(str); } )* <EOF>
  49         {
  50                 return sb.toString();
  51         }
  52 }