Skip to main content

Lexer and GLR parser generator

Project description

PyGgy is a python package for generating parsers and lexers in python. The PyGgy distribution contains two tools:

PyLly - (Pronounced “pile-ey”) A lexer generator that generates
DFA tables for lexing tokens.
PyGgy - (Pronounced “piggy”) A parser generator that generates
SLR tables for a GLR parsing engine.

The PyLly program is used to pregenerate tables for a finite state machine from a lexer specification. There is a lexer engine that uses the tables to tokenize an input stream.

The PyGgy program is used to pregenerate parser tables from a parser specification. There is a GLR parsing engine that uses the tables to parse a stream of input tokens. Because GLR parsing is used, the parser can deal with arbitrary grammars, even if they are recursive or ambiguous.

Project details


Release history Release notifications

This version
History Node

0.3

History Node

0.1

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging CloudAMQP CloudAMQP RabbitMQ AWS AWS Cloud computing Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page