grunt-zuckrig-closure/tasks/Extractor.js

Reduce a verbose syntax for Google Closure Compiler to be more Pythonic/Rubistic.

var Extractor;

Extractor = (function() {
  function Extractor() {}

  Extractor._extend_seq = [
    {
      k: 2,
      v: ';'
    }, {
      k: 3,
      v: '}'
    }, {
      k: 4,
      v: ')'
    }, {
      k: 5,
      v: '('
    }
  ];

  Extractor.prototype.class_name = function(i, tokens, back) {
    var class_name, next;
    if (back == null) {
      back = false;
    }
    class_name = [];
    while (true) {
      next = tokens[i];
      if (!next) {
        break;
      }
      if (!(next.type === 'Identifier' || next.value === '.')) {
        break;
      }
      class_name.push(next.value);
      if (back) {
        i--;
      } else {
        i++;
      }
    }
    if (back) {
      class_name.reverse();
    }
    return class_name.join('');
  };

  Extractor.prototype.parse_super_class = function(i, tokens) {
    var len, seq, skip, super_class, tok, _i, _len, _ref;
    len = tokens.length;
    super_class = null;
    while (i < len) {
      tok = tokens[i];
      if ((tok != null) && (tok.type !== 'Keyword' || tok.value !== 'return')) {
        i += 1;
        continue;
      }
      skip = false;
      _ref = Extractor._extend_seq;
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        seq = _ref[_i];
        if ((tokens[i + seq.k] != null) && tokens[i + seq.k].value !== seq.v) {
          i += seq.k;
          skip = true;
          break;
        }
      }
      if (skip) {
        continue;
      }
      if (tokens[i + 6].type !== 'Identifier') {
        i += 6;
        continue;
      }
      super_class = this.class_name(i + 6, tokens);
      break;
    }
    return super_class;
  };

  Extractor.prototype.parse_class_from_def = function(i, tokens) {
    var class_name;
    class_name = null;
    if (tokens[i].value === '=' && tokens[i + 1].value === '(' && tokens[i + 2].value === 'function' && tokens[i + 3].value === '(') {
      class_name = this.class_name(i - 1, tokens, true);
    }
    return class_name;
  };

  return Extractor;

})();

module.exports = Extractor;