Raimondi / Vimpeg

A PEG parser for Vim

VimPEG

A memoizing Parsing Expression Grammar parser generator for Vim.

Features

• Tolerable API for specifying standard parsing expression grammars.

• Handles the standard PEG forms:

  • Simple Expressions (uses Vim’s regular expressions), eg: peg.e('\d\+')

  • Expression Sequences, eg: peg.and(['digits', 'plus', 'digits'])

  • Ordered Choice, eg: peg.or(['add', 'sub'])

  • Repetition, eg: ‘peg.many([’

  • Predicates, eg: peg.has('\w\+') and peg.has_not('\n')

  • Semantic Handlers in the form of on_match callback functions.

• A PEG grammar to Vimpeg API generator so that grammars can be expressed in standard PEG form.

Examples

• Simple Calculator

Note: See the examples/ directory for a growing number of grammars.