mutual/lib/pattern.js

Scala-inspired Actors that use Redis as a message transport

// Generated by CoffeeScript 1.12.7
(function() {
  var Pattern, _match, _parse, memoize,
    slice = [].slice;

  memoize = require("fairmont").memoize;

  _parse = function(string) {
    var error;
    try {
      return string.split(".");
    } catch (error1) {
      error = error1;
      throw new Error(string + " is not a valid pattern");
    }
  };

  _match = function(pattern, target) {
    var p, pl, px, t, tl, tx;
    pl = pattern.length;
    tl = target.length;
    if ((pl === tl && tl === 0)) {
      return true;
    } else if (pl === 0 || tl === 0) {
      return false;
    } else {
      p = pattern[0], px = 2 <= pattern.length ? slice.call(pattern, 1) : [];
      t = target[0], tx = 2 <= target.length ? slice.call(target, 1) : [];
      if (p === "*") {
        if (_match(px, tx)) {
          return true;
        } else {
          return _match(pattern, tx);
        }
      } else if (p === t) {
        return _match(px, tx);
      } else {
        return false;
      }
    }
  };

  Pattern = (function() {
    function Pattern(pattern) {
      this._pattern = _parse(pattern);
    }

    Pattern.prototype.match = function(target) {
      if (this._match == null) {
        this._match = memoize((function(_this) {
          return function(target) {
            return _match(_this._pattern, _parse(target));
          };
        })(this));
      }
      return this._match(target);
    };

    return Pattern;

  })();

  module.exports = Pattern;

}).call(this);