org.antlr.tool
Class RandomPhrase

java.lang.Object
  org.antlr.tool.RandomPhrase

public class RandomPhrase
extends Object

Generate a random phrase given a grammar. Usage: java org.antlr.tool.RandomPhrase grammarFile.g startRule [seed] For example: java org.antlr.tool.RandomPhrase simple.g program 342 The seed acts like a unique identifier so you can get the same random phrase back during unit testing, for example. If you do not specify a seed then the current time in milliseconds is used guaranteeing that you'll never see that seed again. NOTE: this does not work well for large grammars...it tends to recurse too much and build really long strings. I need throttle control; later.

Field Summary

static boolean	debug
protected static Random	random

Constructor Summary

RandomPhrase()

Method Summary

protected static Integer	getTokenType(Label label)
static void	main(String[] args) Used to generate random strings
protected static void	randomPhrase(Grammar g, List<Integer> tokenTypes, String startRule) an experimental method to generate random phrases for a given grammar given a start rule.

Methods inherited from class java.lang.Object

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

Field Detail

debug

public static final boolean debug

See Also:

Constant Field Values

random

protected static Random random

Constructor Detail

RandomPhrase

public RandomPhrase()

Method Detail

randomPhrase

protected static void randomPhrase(Grammar g,
                                   List<Integer> tokenTypes,
                                   String startRule)

an experimental method to generate random phrases for a given grammar given a start rule. Return a list of token types.

getTokenType

protected static Integer getTokenType(Label label)

main

public static void main(String[] args)

Used to generate random strings