116 lines
2.4 KiB
JavaScript
116 lines
2.4 KiB
JavaScript
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const ROOT_NAMESPACE_NAME = '__rootNamespace__';
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class Namespace {
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constructor(name, parentNamespace) {
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this.name = name;
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this.parentNamespace = parentNamespace;
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this.childNamespaces = {};
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this.tasks = {};
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this.rules = {};
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this.path = this.getPath();
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}
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get fullName() {
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return this._getFullName();
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}
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addTask(task) {
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this.tasks[task.name] = task;
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task.namespace = this;
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}
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resolveTask(name) {
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if (!name) {
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return;
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}
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let taskPath = name.split(':');
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let taskName = taskPath.pop();
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let task;
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let ns;
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// Namespaced, return either relative to current, or from root
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if (taskPath.length) {
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taskPath = taskPath.join(':');
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ns = this.resolveNamespace(taskPath) ||
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Namespace.ROOT_NAMESPACE.resolveNamespace(taskPath);
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task = (ns && ns.resolveTask(taskName));
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}
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// Bare task, return either local, or top-level
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else {
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task = this.tasks[name] || Namespace.ROOT_NAMESPACE.tasks[name];
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}
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return task || null;
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}
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resolveNamespace(relativeName) {
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if (!relativeName) {
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return this;
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}
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let parts = relativeName.split(':');
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let ns = this;
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for (let i = 0, ii = parts.length; (ns && i < ii); i++) {
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ns = ns.childNamespaces[parts[i]];
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}
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return ns || null;
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}
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matchRule(relativeName) {
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let parts = relativeName.split(':');
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parts.pop();
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let ns = this.resolveNamespace(parts.join(':'));
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let rules = ns ? ns.rules : [];
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let r;
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let match;
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for (let p in rules) {
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r = rules[p];
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if (r.match(relativeName)) {
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match = r;
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}
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}
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return (ns && match) ||
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(this.parentNamespace &&
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this.parentNamespace.matchRule(relativeName));
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}
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getPath() {
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let parts = [];
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let next = this.parentNamespace;
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while (next) {
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parts.push(next.name);
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next = next.parentNamespace;
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}
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parts.pop(); // Remove '__rootNamespace__'
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return parts.reverse().join(':');
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}
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_getFullName() {
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let path = this.path;
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path = (path && path.split(':')) || [];
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path.push(this.name);
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return path.join(':');
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}
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isRootNamespace() {
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return !this.parentNamespace;
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}
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}
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class RootNamespace extends Namespace {
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constructor() {
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super(ROOT_NAMESPACE_NAME, null);
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Namespace.ROOT_NAMESPACE = this;
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}
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}
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module.exports.Namespace = Namespace;
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module.exports.RootNamespace = RootNamespace;
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