waka v0.1.2

Waka

Parser generator for Node and browsers. Compiles PEG programs to Javascript for execution.

Installation

npm install waka

Use it like this:

var Waka = require('waka')

var parser = Waka(peg)

var result = parser.exec(input)

if(result.error)
  console.error(parser.getTrace(result.error.message))
else
  var value = result.value

Read the intro to learn the supported PEG syntax.

API reference

Waka(peg : String) -> parser

Compile your PEG into a runnable parser.

parser.exec(input : String) -> result

Run your parser on an input. Returns an object with these fields:

• success : Bool
• error : Error
• value : * the value returned by your PEG rule

parser.startWith(rule : String) -> parser

Get a new parser that will begin execution with the given rule, instead of "Start".

parser.getTrace(message : String) -> String

Get a multiline error message showing the current state of the parser.

Waka.getSource(peg : String) -> String

Get PEG program compiled as a JS code string. Use this if you want to make your own API.

Waka.getSourceStandalone(peg : String) -> String

Get PEG program compiled as a JS code string IIFE containing the same API as Waka().