ReParse = require('../src/reparse').ReParse util = require("util") peg = require('./pegjson').parser; require('./upgrades') class ReJSON extends ReParse ignorews: true LITERAL = {'true': true, 'false': false, 'null': null} STRING = {"\"": 34, "\\": 92, "/": 47, 'b': 8, 'f': 12, 'n': 10, 'r': 13, 't': 9} value: => @choice @literal, @string, @number, @array, @object object: => @between(/^\{/, /^\}/, @members).reduce ((obj, pair) => obj[pair[0]] = pair[2]; obj), {} members: => @sepBy @pair, /^,/ pair: => @seq @string, /^:/, @value array: => @between /^\[/, /^\]/, @elements elements: => @sepBy @value, /^,/ literal: => LITERAL[@match(/^(true|false|null)/)] number: => parseFloat @match(/^\-?\d+(?:\.\d+)?(?:[eE][\+\-]?\d+)?/) string: => chars = @match(/^"((?:\\["\\/bfnrt]|\\u[0-9a-fA-F]{4}|[^"\\])*)"/) chars.replace /\\(["\\/bfnrt])|\\u([0-9a-fA-F]{4})/g, (_, $1, $2) => String.fromCharCode (if $1 then STRING[$1] else parseInt($2, 16)) # " parse: => super @start(@value) capture = (stream, encoding, fn) => data = "" stream.setEncoding encoding stream.on "data", (chunk) => data += chunk stream.on "end", => fn data time = (label, reps, fn) => start = Date.now() for i in [0..reps] fn() util.puts label + ": " + (Date.now() - start) input = "{\"a\": [1, \"foo\", [], {\"foo\": 1, \"bar\": [1, 2, 3]}] }" console.log util.inspect (new ReJSON).parse( input), false, 4 jsonparse = new ReJSON() time "JSON", 1000, => JSON.parse input time "PEG.js", 1000, => peg.parse input time "ReParse", 1000, => jsonparse.parse(input)