src/parser/org/nitlanguage/gen/TestParser.java

   1 /* This file is part of NIT ( http://www.nitlanguage.org ).
   2  *
   3  * This file is free software, which comes along with NIT.  This software is
   4  * distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
   5  * without  even  the implied warranty of  MERCHANTABILITY or  FITNESS FOR A
   6  * PARTICULAR PURPOSE.  You can modify it is you want,  provided this header
   7  * is kept unaltered, and a notification of the changes is added.
   8  * You  are  allowed  to  redistribute it and sell it, alone or is a part of
   9  * another product.
  10  */
  11
  12 package org.nitlanguage.gen;
  13
  14 import java.io.*;
  15 import java.nio.file.*;
  16
  17 import org.nitlanguage.gen.lexer.*;
  18 import org.nitlanguage.gen.parser.*;
  19 import org.nitlanguage.gen.analysis.*;
  20 import org.nitlanguage.gen.node.*;
  21
  22 public class TestParser extends DepthFirstAdapter {
  23         public static void main(String[] args) throws Exception {
  24                 if (args.length == 0) {
  25                         BufferedReader ir = new BufferedReader(new InputStreamReader(System.in));
  26                         work(ir);
  27                 } else {
  28                         for(int i=0; i<args.length; i++) {
  29                                 //System.out.println(args[i]);
  30
  31                                 //Here we use "ISO-8859-1" because we want to opaquely treat Bytes as characters.
  32                                 //Unfortunately "US-ASCII" does not seems to do the job for values>127.
  33                                 BufferedReader ir = new BufferedReader(new InputStreamReader(new FileInputStream(args[i]), "ISO-8859-1"));
  34
  35                                 work(ir);
  36                         }
  37                 }
  38         }
  39
  40         public static void work(BufferedReader ir) {
  41                 TestParser testParser = new TestParser();
  42                 try {
  43                         PushbackReader r = new PushbackReader(ir, 1024);
  44                         Parser parser = new Parser(new Lexer(r));
  45                         Node syntaxTree = parser.parse();
  46                         syntaxTree.apply(testParser);
  47                 } catch (LexerException e) {
  48                         System.out.println(e.getMessage() + ".");
  49                 } catch (ParserException e) {
  50                         System.out.println(e.getMessage() + ".");
  51                 } catch (IOException e) {
  52                         System.out.println(e.getMessage() + ".");
  53                         System.exit(1);
  54                 }
  55         }
  56 }