se.chalmers.cs.gf.parse.lex
Class IgnoreLexer

java.lang.Object
  se.chalmers.cs.gf.parse.lex.IgnoreLexer

All Implemented Interfaces:

Lexer

public class IgnoreLexer
extends java.lang.Object
implements Lexer

A lexer which takes the output from another lexer and removes all WORD tokens not in a given set. String and integer literal tokens are retained.

Constructor Summary

IgnoreLexer(Lexer lexer, java.util.Set<java.lang.String> keepWords)

Method Summary

java.util.List<Token>

lex(java.lang.CharSequence input)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IgnoreLexer

public IgnoreLexer(Lexer lexer,
                   java.util.Set<java.lang.String> keepWords)

Method Detail

lex

public java.util.List<Token> lex(java.lang.CharSequence input)

Specified by:

lex in interface Lexer