This repository provides a simple parser for the Planning Domain Definition Language (PDDL), using the pyparsing library.
It implements the BNF of PDDL 3.1 as described in:
Daniel L. Kovacs: Complete BNF description of PDDL 3.1 (completely corrected), 2011.
It is assumed that all keywords and identifiers are caseless (so
:strips is identified with :STRIPS, and move-block with
MOVE-BLOCK).
The two functions for parsing domain and problem files return an abstract syntax tree (AST) in the form of a dictionary.
The examples directory contains a few example files from standard
benchmarks. To see their ASTs, run
$ pytest -s pddl_parser.py