55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
/** 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);
|
|
};
|
|
|