neft/src/nml-parser/parser.coffee

JavaScript. Everywhere.

'use strict'

fs = require 'fs'
pathUtils = require 'path'
grammar = fs.readFileSync pathUtils.resolve(__dirname, './grammar.pegjs'), 'utf-8'

module.exports = (file) ->
    fs = require 'fs'
    pathUtils = require 'path'
    PEG = require 'pegjs'

    parser = PEG.buildParser grammar,
        optimize: 'speed'

    try
        parser.parse(file)
    catch err
        lines = file.split '\n'
        line = err.line - 1
        msg = ''
        msg += lines[line-1] + "\n" if err.line > 1
        msg += "\u001b[31m#{lines[line]}\u001b[39m \n" if line isnt lines.length
        msg += lines[line+1] + "\n" if line < lines.length

        msg += "\nLine #{err.line}, column #{err.column}: #{err.message}\n"
        throw Error msg