/** internal
* class MutuallyExclusiveGroup * * Group arguments. * By default, ArgumentParser groups command-line arguments * into “positional arguments” and “optional arguments” * when displaying help messages. When there is a better * conceptual grouping of arguments than this default one, * appropriate groups can be created using the addArgumentGroup() method * * This class inherited from [[ArgumentContainer]] **/
'use strict';
var util = require('util');
var ArgumentGroup = require('./group');
/**
* new MutuallyExclusiveGroup(container, options) * - container (object): main container * - options (object): options.required -> true/false * * `required` could be an argument itself, but making it a property of * the options argument is more consistent with the JS adaptation of the Python) **/
var MutuallyExclusiveGroup = module.exports = function MutuallyExclusiveGroup(container, options) {
var required; options = options || {}; required = options.required || false; ArgumentGroup.call(this, container); this.required = required;
}; util.inherits(MutuallyExclusiveGroup, ArgumentGroup);
MutuallyExclusiveGroup.prototype._addAction = function (action) {
var msg; if (action.required) { msg = 'mutually exclusive arguments must be optional'; throw new Error(msg); } action = this._container._addAction(action); this._groupActions.push(action); return action;
};
MutuallyExclusiveGroup.prototype._removeAction = function (action) {
this._container._removeAction(action); this._groupActions.remove(action);
};