| 'use strict'; |
| |
| var YAMLException = require('./exception'); |
| |
| var TYPE_CONSTRUCTOR_OPTIONS = [ |
| 'kind', |
| 'resolve', |
| 'construct', |
| 'instanceOf', |
| 'predicate', |
| 'represent', |
| 'defaultStyle', |
| 'styleAliases' |
| ]; |
| |
| var YAML_NODE_KINDS = [ |
| 'scalar', |
| 'sequence', |
| 'mapping' |
| ]; |
| |
| function compileStyleAliases(map) { |
| var result = {}; |
| |
| if (map !== null) { |
| Object.keys(map).forEach(function (style) { |
| map[style].forEach(function (alias) { |
| result[String(alias)] = style; |
| }); |
| }); |
| } |
| |
| return result; |
| } |
| |
| function Type(tag, options) { |
| options = options || {}; |
| |
| Object.keys(options).forEach(function (name) { |
| if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) { |
| throw new YAMLException('Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.'); |
| } |
| }); |
| |
| // TODO: Add tag format check. |
| this.tag = tag; |
| this.kind = options['kind'] || null; |
| this.resolve = options['resolve'] || function () { return true; }; |
| this.construct = options['construct'] || function (data) { return data; }; |
| this.instanceOf = options['instanceOf'] || null; |
| this.predicate = options['predicate'] || null; |
| this.represent = options['represent'] || null; |
| this.defaultStyle = options['defaultStyle'] || null; |
| this.styleAliases = compileStyleAliases(options['styleAliases'] || null); |
| |
| if (YAML_NODE_KINDS.indexOf(this.kind) === -1) { |
| throw new YAMLException('Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.'); |
| } |
| } |
| |
| module.exports = Type; |