/*:nodoc:*
   * class ActionCount
   *
   * This counts the number of times a keyword argument occurs.
   * For example, this is useful for increasing verbosity levels
   *
   * This class inherided from [[Action]]
   *
   **/
  'use strict';
  
  var util = require('util');
  
  var Action = require('../action');
  
  /*:nodoc:*
   * new ActionCount(options)
   * - options (object): options hash see [[Action.new]]
   *
   **/
  var ActionCount = module.exports = function ActionCount(options) {
    options = options || {};
    options.nargs = 0;
  
    Action.call(this, options);
  };
  util.inherits(ActionCount, Action);
  
  /*:nodoc:*
   * ActionCount#call(parser, namespace, values, optionString) -> Void
   * - parser (ArgumentParser): current parser
   * - namespace (Namespace): namespace for output data
   * - values (Array): parsed values
   * - optionString (Array): input option string(not parsed)
   *
   * Call the action. Save result in namespace object
   **/
  ActionCount.prototype.call = function (parser, namespace) {
    namespace.set(this.dest, (namespace[this.dest] || 0) + 1);
  };