| var hasOwnProperty = Object.prototype.hasOwnProperty; |
| |
| function buildMap(list, caseInsensitive) { |
| var map = Object.create(null); |
| |
| if (!Array.isArray(list)) { |
| return null; |
| } |
| |
| for (var i = 0; i < list.length; i++) { |
| var name = list[i]; |
| |
| if (caseInsensitive) { |
| name = name.toLowerCase(); |
| } |
| |
| map[name] = true; |
| } |
| |
| return map; |
| } |
| |
| function buildList(data) { |
| if (!data) { |
| return null; |
| } |
| |
| var tags = buildMap(data.tags, true); |
| var ids = buildMap(data.ids); |
| var classes = buildMap(data.classes); |
| |
| if (tags === null && |
| ids === null && |
| classes === null) { |
| return null; |
| } |
| |
| return { |
| tags: tags, |
| ids: ids, |
| classes: classes |
| }; |
| } |
| |
| function buildIndex(data) { |
| var scopes = false; |
| |
| if (data.scopes && Array.isArray(data.scopes)) { |
| scopes = Object.create(null); |
| |
| for (var i = 0; i < data.scopes.length; i++) { |
| var list = data.scopes[i]; |
| |
| if (!list || !Array.isArray(list)) { |
| throw new Error('Wrong usage format'); |
| } |
| |
| for (var j = 0; j < list.length; j++) { |
| var name = list[j]; |
| |
| if (hasOwnProperty.call(scopes, name)) { |
| throw new Error('Class can\'t be used for several scopes: ' + name); |
| } |
| |
| scopes[name] = i + 1; |
| } |
| } |
| } |
| |
| return { |
| whitelist: buildList(data), |
| blacklist: buildList(data.blacklist), |
| scopes: scopes |
| }; |
| } |
| |
| module.exports = { |
| buildIndex: buildIndex |
| }; |