| /*:nodoc:* |
| * class ActionAppendConstant |
| * |
| * This stores a list, and appends the value specified by |
| * the const keyword argument to the list. |
| * (Note that the const keyword argument defaults to null.) |
| * The 'appendConst' action is typically useful when multiple |
| * arguments need to store constants to the same list. |
| * |
| * This class inherited from [[Action]] |
| **/ |
| |
| 'use strict'; |
| |
| var util = require('util'); |
| |
| var Action = require('../../action'); |
| |
| /*:nodoc:* |
| * new ActionAppendConstant(options) |
| * - options (object): options hash see [[Action.new]] |
| * |
| **/ |
| var ActionAppendConstant = module.exports = function ActionAppendConstant(options) { |
| options = options || {}; |
| options.nargs = 0; |
| if (typeof options.constant === 'undefined') { |
| throw new Error('constant option is required for appendAction'); |
| } |
| Action.call(this, options); |
| }; |
| util.inherits(ActionAppendConstant, Action); |
| |
| /*:nodoc:* |
| * ActionAppendConstant#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 |
| **/ |
| ActionAppendConstant.prototype.call = function (parser, namespace) { |
| var items = [].concat(namespace[this.dest] || []); |
| items.push(this.constant); |
| namespace.set(this.dest, items); |
| }; |