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

Fields

Modifier and Type	Field and Description
static boolean	debug
protected static Random	random

Constructor Summary

Constructors

Constructor and Description
RandomPhrase()

Method Summary

Methods

Modifier and Type	Method and Description
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