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'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;
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