src/edu/berkeley/sbp/misc/HaskellHelper.java

   1 // Copyright 2006 all rights reserved; see LICENSE file for BSD-style license
   2
   3 package edu.berkeley.sbp.misc;
   4
   5 import edu.berkeley.sbp.*;
   6 import edu.berkeley.sbp.misc.*;
   7 import edu.berkeley.sbp.meta.*;
   8 import edu.berkeley.sbp.chr.*;
   9 import java.io.*;
  10
  11 public class HaskellHelper {
  12
  13     public static Tree main(String grammarFile, String targetFile) throws Throwable {
  14         try {
  15             Tree<String> res = new CharParser(MetaGrammar.newInstance()).parse(new FileInputStream(grammarFile)).expand1();
  16             Union meta = Grammar.create(res, "s",
  17                                         new Grammar.Bindings() {
  18                                             /*
  19                                             public Sequence createSequence(Production p) {
  20                                                 Sequence ret = super.createSequence(p);
  21                                                 if (ret != null) return ret;
  22                                                 return Sequence.create(p.nonTerminal, p.elements, p.drops, false);
  23                                             }
  24                                             */
  25                                         });
  26             Tree ret = new CharParser(meta).parse(new FileInputStream(targetFile)).expand1();
  27             if (ret==null) throw new NullPointerException("CharParser returned null");
  28             return ret;
  29         } catch (Throwable e) {
  30             e.printStackTrace();
  31             throw e;
  32         }
  33     }
  34
  35
  36 }