pegtree

A PEG Parser Combinator Generator with Tree Annotation

Installation

Python3

pip3 install pegtree

Usage

Python3

import pegtree as pg

# 1. load a sample grammar 'math.tpeg'

peg = pg.grammar('math.tpeg')

# 2. generate parser from a grammar

parser = pg.generate(peg)

# 3. parse an input text, then you will obtain parse tree

tree = parser('1+2*3')

print(repr(tree))