monaco-editor
Version:
A browser based code editor
173 lines (172 loc) • 6.06 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { Emitter } from '../../base/common/event.js';
import { toDisposable } from '../../base/common/lifecycle.js';
import { shouldSynchronizeModel } from './model.js';
import { score } from './languageSelector.js';
function isExclusive(selector) {
if (typeof selector === 'string') {
return false;
}
else if (Array.isArray(selector)) {
return selector.every(isExclusive);
}
else {
return !!selector.exclusive; // TODO: microsoft/TypeScript#42768
}
}
class MatchCandidate {
constructor(uri, languageId, notebookUri, notebookType) {
this.uri = uri;
this.languageId = languageId;
this.notebookUri = notebookUri;
this.notebookType = notebookType;
}
equals(other) {
var _a, _b;
return this.notebookType === other.notebookType
&& this.languageId === other.languageId
&& this.uri.toString() === other.uri.toString()
&& ((_a = this.notebookUri) === null || _a === void 0 ? void 0 : _a.toString()) === ((_b = other.notebookUri) === null || _b === void 0 ? void 0 : _b.toString());
}
}
export class LanguageFeatureRegistry {
constructor(_notebookInfoResolver) {
this._notebookInfoResolver = _notebookInfoResolver;
this._clock = 0;
this._entries = [];
this._onDidChange = new Emitter();
this.onDidChange = this._onDidChange.event;
}
register(selector, provider) {
let entry = {
selector,
provider,
_score: -1,
_time: this._clock++
};
this._entries.push(entry);
this._lastCandidate = undefined;
this._onDidChange.fire(this._entries.length);
return toDisposable(() => {
if (entry) {
const idx = this._entries.indexOf(entry);
if (idx >= 0) {
this._entries.splice(idx, 1);
this._lastCandidate = undefined;
this._onDidChange.fire(this._entries.length);
entry = undefined;
}
}
});
}
has(model) {
return this.all(model).length > 0;
}
all(model) {
if (!model) {
return [];
}
this._updateScores(model);
const result = [];
// from registry
for (const entry of this._entries) {
if (entry._score > 0) {
result.push(entry.provider);
}
}
return result;
}
ordered(model) {
const result = [];
this._orderedForEach(model, entry => result.push(entry.provider));
return result;
}
orderedGroups(model) {
const result = [];
let lastBucket;
let lastBucketScore;
this._orderedForEach(model, entry => {
if (lastBucket && lastBucketScore === entry._score) {
lastBucket.push(entry.provider);
}
else {
lastBucketScore = entry._score;
lastBucket = [entry.provider];
result.push(lastBucket);
}
});
return result;
}
_orderedForEach(model, callback) {
this._updateScores(model);
for (const entry of this._entries) {
if (entry._score > 0) {
callback(entry);
}
}
}
_updateScores(model) {
var _a, _b;
const notebookInfo = (_a = this._notebookInfoResolver) === null || _a === void 0 ? void 0 : _a.call(this, model.uri);
// use the uri (scheme, pattern) of the notebook info iff we have one
// otherwise it's the model's/document's uri
const candidate = notebookInfo
? new MatchCandidate(model.uri, model.getLanguageId(), notebookInfo.uri, notebookInfo.type)
: new MatchCandidate(model.uri, model.getLanguageId(), undefined, undefined);
if ((_b = this._lastCandidate) === null || _b === void 0 ? void 0 : _b.equals(candidate)) {
// nothing has changed
return;
}
this._lastCandidate = candidate;
for (const entry of this._entries) {
entry._score = score(entry.selector, candidate.uri, candidate.languageId, shouldSynchronizeModel(model), candidate.notebookUri, candidate.notebookType);
if (isExclusive(entry.selector) && entry._score > 0) {
// support for one exclusive selector that overwrites
// any other selector
for (const entry of this._entries) {
entry._score = 0;
}
entry._score = 1000;
break;
}
}
// needs sorting
this._entries.sort(LanguageFeatureRegistry._compareByScoreAndTime);
}
static _compareByScoreAndTime(a, b) {
if (a._score < b._score) {
return 1;
}
else if (a._score > b._score) {
return -1;
}
// De-prioritize built-in providers
if (isBuiltinSelector(a.selector) && !isBuiltinSelector(b.selector)) {
return 1;
}
else if (!isBuiltinSelector(a.selector) && isBuiltinSelector(b.selector)) {
return -1;
}
if (a._time < b._time) {
return 1;
}
else if (a._time > b._time) {
return -1;
}
else {
return 0;
}
}
}
function isBuiltinSelector(selector) {
if (typeof selector === 'string') {
return false;
}
if (Array.isArray(selector)) {
return selector.some(isBuiltinSelector);
}
return Boolean(selector.isBuiltin);
}