Python version of SimplePEG

A very simple implementation of PEG parser generator.

To use, simply do

from simplepeg import SPEG
parser = SPEG()
parser.parse_grammar('GRAMMAR test b -> "a";')
ast = parser.parse_text('a')
print ast.to_json()

or

from simplepeg import SPEG
parser = SPEG()
ast = parser.parse('GRAMMAR test b -> "a";', 'a')
print ast.to_json()

Grammar Example

url.peg

GRAMMAR url

url       ->  scheme "://" host pathname search hash?;
scheme    ->  "http" "s"?;
host      ->  hostname port?;
hostname  ->  segment ("." segment)*;
segment   ->  [a-z0-9-]+;
port      ->  ":" [0-9]+;
pathname  ->  "/" [^ ?]*;
search    ->  ("?" [^ #]*)?;
hash      ->  "#" [^ ]*;