https://github.com/phadej/tarzan-server

Everybody stand back. I know regular expressions.
https://github.com/phadej/tarzan-server

Last synced: about 7 hours ago
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Everybody stand back. I know regular expressions.

• Host: GitHub
• URL: https://github.com/phadej/tarzan-server
• Owner: phadej
• License: mit
• Created: 2014-02-09T13:46:08.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-09-05T14:18:26.000Z (about 10 years ago)
• Last Synced: 2024-10-11T23:53:31.465Z (26 days ago)
• Language: Haskell
• Size: 1.26 MB
• Stars: 1
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Tarzan

> Everybody stand back. I know regular expressions.

[![Build Status](https://travis-ci.org/phadej/tarzan.svg?branch=master)](https://travis-ci.org/phadej/tarzan)

## Try out:

http://tarzanre.herokuapp.com/

## Disclaimer

- Output format resembles JavaScript to high extend, however

    - Tarzan doesn't know about greedy or non-greedy stuff (`(...)*?` etc), it treats them as the same.

    - Also Tarzan has no prefered hand, so `(fu|fuuuu)` and `(fuuu|fu)` are the same.

      - It doesn't really matter as regexp are full match by default

      - _they are (kind of) in POSIX regexps (longest match), but not in JavaScript (left-biased)_.

- Output regexp could be cleaner still.

## operator.tarzan

```js

// fn         := /[-=]>/

var fn = /^[\-=]>$/;

// assign     := /[-+*/%<>&|^!?=]=/

var assign = /^[!%&\*\+\-\/<-\?\^\|]=$/;

// zerofillrs := />>>=??/

var zerofillrs = /^>>>(?:=)?$/;

// doubles    := "--" | "++" | "::"

var doubles = /^(?:\+\+|\-\-|::)$/;

// logic      := ("&&" | "||" | "<<" | ">>") /=?/

var logic = /^(?:&&|<<|>>|\|\|)(?:=)?$/;

// soak       := "?."

var soak = /^\?\.$/;

// range      := ".." | "..."

var range = /^(?:\.\.|\.\.\.)$/;

// operator   := fn | assign | zerofillrs | doubles | logic | soak | range

var operator = /^(?:[!%&\*\+\-\/<-\?\^\|]=|\+\+|\-\-|[\-=]>|\.\.|\.\.\.|::|>>>(?:=)?|\?\.|(?:&&|<<|>>|\|\|)(?:=)?)$/;

```