Class 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.
    • 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