JSGFToolsLeyzer 0.2.0

Tools for JSGF grammar expansion.

JSGF Grammar Tools for Leyzer corpus

Introduction

This library generate strings from a JSGF grammar. Although it can be used to generate strings from any JSGF grammar it was created as auxilary tool for Leyzer (https://github.com/cartesinus/leyzer) grammars generation. It is slightly modified version of https://github.com/syntactic/JSGFTools.

Notes:

• Larger grammars take a longer time to parse, so if nothing seems to be generating, wait a few seconds and the grammar should be parsed.
• Most of JSGF as described in http://www.w3.org/TR/2000/NOTE-jsgf-20000605/ is supported, but there are a few things that have not been implemented by these tools yet:
  • Kleene operators
  • Imports and Grammar Names
  • Tags

Dependencies:

• Python 3.7
• PyParsing 3.0.9

JSGFTools were originaly created by Pastèque Ho (and others).

Library Usage

To generate strings from grammar use it as in below example. Below example use grammar that is included in this repository. Other, more complex grammars, can be found in https://github.com/cartesinus/leyzer repository.

from from JSGFToolsLeyzer import parser

fs = open("Ideas.gram")
grammar = parser.getGrammarObject(fs)

for rule in grammar.publicRules:
    expansions = processRHS(rule.rhs, grammar)
    for expansion in expansions:
        print(expansion)

License

MIT License.