SOURCE CODE: Uize.Parse.JavaProperties.PropertyName

/*______________
|       ______  |   U I Z E    J A V A S C R I P T    F R A M E W O R K
|     /      /  |   ---------------------------------------------------
|    /    O /   |    MODULE : Uize.Parse.JavaProperties.PropertyName Object
|   /    / /    |
|  /    / /  /| |    ONLINE : http://uize.com
| /____/ /__/_| | COPYRIGHT : (c)2014 UIZE
|          /___ |   LICENSE : Available under MIT License or GNU General Public License
|_______________|             http://uize.com/license.html
*/

/* Module Meta Data
  type: Object
  importance: 1
  codeCompleteness: 100
  docCompleteness: 2
*/

/*?
  Introduction
    The =Uize.Parse.JavaProperties.PropertyName= module provides methods for parsing and serializing property names in [[http://en.wikipedia.org/wiki/.properties][Java properties]] files.

    *DEVELOPERS:* `Chris van Rensburg`
*/

Uize.module ({
  name:'Uize.Parse.JavaProperties.PropertyName',
  required:[
    'Uize.Str.Whitespace',
    'Uize.Str.Replace',
    'Uize.Parse.JavaProperties.UnicodeEscaped'
  ],
  builder:function () {
    'use strict';

    var
      /*** Variables for Performance Optimization ***/
        _isNonWhitespace = Uize.Str.Whitespace.isNonWhitespace,

      /*** General Variables ***/
        _terminatingCharsLookup = _charsLookup (' :='),
        _serializerEscaper = Uize.Str.Replace.replacerByLookup ({
          '\\':'\\\\',
          ':':'\\:',
          '=':'\\=',
          ' ':'\\ '
        })
    ;

    /*** Utility Functions ***/
      function _charsLookup (_charsStr) {
        return Uize.lookup (_charsStr.split (''));
      }

    return Uize.mergeInto (
      function (_source,_index) {
        this.parse (_source,_index);
      },
      {
        prototype:{
          source:'',
          index:0,
          length:0,
          isValid:false,
          name:'',

          parse:function (_source,_index) {
            var
              m = this,
              _sourceLength = (m.source = _source = _source || '').length
            ;
            m.index = _index || (_index = 0);
            m.isValid = false;
            if (_isNonWhitespace (_source.charAt (_index))) {
              m.isValid = true;
              _index++;
              var
                _inEscape = false,
                _char
              ;
              while (
                _index < _sourceLength &&
                (_inEscape || !_terminatingCharsLookup [_char = _source.charAt (_index)])
              ) {
                _inEscape = !_inEscape && _char == '\\';
                _index++;
              }
              m.name = _source.slice (m.index,_index).replace (/\\(.)/g,'$1');
              m.length = _index - m.index;
            }
          },

          serialize:function () {
            return (
              this.isValid
                ? Uize.Parse.JavaProperties.UnicodeEscaped.to (_serializerEscaper (this.name))
                : ''
            );
          }
        }
      }
    );
  }
});