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1"use strict";
2var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
3 function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
4 return new (P || (P = Promise))(function (resolve, reject) {
5 function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
6 function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
7 function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
8 step((generator = generator.apply(thisArg, _arguments || [])).next());
9 });
10};
11Object.defineProperty(exports, "__esModule", { value: true });
12exports.grammarScopeToAutoCompleteSelector = void 0;
13const convert_1 = require("../convert");
14const Utils = require("../utils");
15const zadeh_1 = require("zadeh");
16const languageclient_1 = require("../languageclient");
17const apply_edit_adapter_1 = require("./apply-edit-adapter");
18const atom_1 = require("atom");
19class PossiblyResolvedCompletionItem {
20 constructor(completionItem, isResolved) {
21 this.completionItem = completionItem;
22 this.isResolved = isResolved;
23 }
24}
25/** Public: Adapts the language server protocol "textDocument/completion" to the Atom AutoComplete+ package. */
26class AutocompleteAdapter {
27 constructor() {
28 this._suggestionCache = new WeakMap();
29 this._cancellationTokens = new WeakMap();
30 }
31 static canAdapt(serverCapabilities) {
32 return serverCapabilities.completionProvider != null;
33 }
34 static canResolve(serverCapabilities) {
35 return (serverCapabilities.completionProvider != null && serverCapabilities.completionProvider.resolveProvider === true);
36 }
37 /**
38 * Public: Obtain suggestion list for AutoComplete+ by querying the language server using the `textDocument/completion` request.
39 *
40 * @param server An {ActiveServer} pointing to the language server to query.
41 * @param request The {atom$AutocompleteRequest} to satisfy.
42 * @param onDidConvertCompletionItem An optional function that takes a {CompletionItem}, an
43 * {atom$AutocompleteSuggestion} and a {atom$AutocompleteRequest} allowing you to adjust converted items.
44 * @param shouldReplace The behavior of suggestion acceptance (see {ShouldReplace}).
45 * @returns A {Promise} of an {Array} of {atom$AutocompleteSuggestion}s containing the AutoComplete+ suggestions to display.
46 */
47 getSuggestions(server, request, onDidConvertCompletionItem, minimumWordLength, shouldReplace = false) {
48 return __awaiter(this, void 0, void 0, function* () {
49 const triggerChars = server.capabilities.completionProvider != null
50 ? server.capabilities.completionProvider.triggerCharacters || []
51 : [];
52 // triggerOnly is true if we have just typed in a trigger character, and is false if we
53 // have typed additional characters following a trigger character.
54 const [triggerChar, triggerOnly] = AutocompleteAdapter.getTriggerCharacter(request, triggerChars);
55 if (!this.shouldTrigger(request, triggerChar, minimumWordLength || 0)) {
56 return [];
57 }
58 // Get the suggestions either from the cache or by calling the language server
59 const suggestions = yield this.getOrBuildSuggestions(server, request, triggerChar, triggerOnly, shouldReplace, onDidConvertCompletionItem);
60 // We must update the replacement prefix as characters are added and removed
61 const cache = this._suggestionCache.get(server);
62 const replacementPrefix = request.editor.getTextInBufferRange([
63 [cache.triggerPoint.row, cache.triggerPoint.column + cache.triggerChar.length],
64 request.bufferPosition,
65 ]);
66 for (const suggestion of suggestions) {
67 if (suggestion.customReplacmentPrefix) {
68 // having this property means a custom range was provided
69 const len = replacementPrefix.length;
70 const preReplacementPrefix = suggestion.customReplacmentPrefix +
71 replacementPrefix.substring(len + cache.originalBufferPoint.column - request.bufferPosition.column, len);
72 // we cannot replace text after the cursor with the current autocomplete-plus API
73 // so we will simply ignore it for now
74 suggestion.replacementPrefix = preReplacementPrefix;
75 }
76 else {
77 suggestion.replacementPrefix = replacementPrefix;
78 }
79 }
80 const filtered = !(request.prefix === "" || (triggerChar !== "" && triggerOnly));
81 if (filtered) {
82 // filter the suggestions who have `filterText` property
83 const validSuggestions = suggestions.filter((sgs) => typeof sgs.filterText === "string");
84 // TODO use `ObjectArrayFilterer.setCandidate` in `_suggestionCache` to avoid creating `ObjectArrayFilterer` every time from scratch
85 const objFilterer = new zadeh_1.ObjectArrayFilterer(validSuggestions, "filterText");
86 // zadeh returns an array of the selected `Suggestions`
87 return objFilterer.filter(request.prefix);
88 }
89 else {
90 return suggestions;
91 }
92 });
93 }
94 shouldTrigger(request, triggerChar, minWordLength) {
95 return (request.activatedManually || triggerChar !== "" || minWordLength <= 0 || request.prefix.length >= minWordLength);
96 }
97 getOrBuildSuggestions(server, request, triggerChar, triggerOnly, shouldReplace, onDidConvertCompletionItem) {
98 return __awaiter(this, void 0, void 0, function* () {
99 const cache = this._suggestionCache.get(server);
100 const triggerColumn = triggerChar !== "" && triggerOnly
101 ? request.bufferPosition.column - triggerChar.length
102 : request.bufferPosition.column - request.prefix.length - triggerChar.length;
103 const triggerPoint = new atom_1.Point(request.bufferPosition.row, triggerColumn);
104 // Do we have complete cached suggestions that are still valid for this request?
105 if (cache &&
106 !cache.isIncomplete &&
107 cache.triggerChar === triggerChar &&
108 cache.triggerPoint.isEqual(triggerPoint) &&
109 cache.originalBufferPoint.isLessThanOrEqual(request.bufferPosition)) {
110 return Array.from(cache.suggestionMap.keys());
111 }
112 // Our cached suggestions can't be used so obtain new ones from the language server
113 const completions = yield Utils.doWithCancellationToken(server.connection, this._cancellationTokens, (cancellationToken) => server.connection.completion(AutocompleteAdapter.createCompletionParams(request, triggerChar, triggerOnly), cancellationToken));
114 // spec guarantees all edits are on the same line, so we only need to check the columns
115 const triggerColumns = [triggerPoint.column, request.bufferPosition.column];
116 // Setup the cache for subsequent filtered results
117 const isComplete = completions === null || Array.isArray(completions) || !completions.isIncomplete;
118 const suggestionMap = this.completionItemsToSuggestions(completions, request, triggerColumns, shouldReplace, onDidConvertCompletionItem);
119 this._suggestionCache.set(server, {
120 isIncomplete: !isComplete,
121 triggerChar,
122 triggerPoint,
123 originalBufferPoint: request.bufferPosition,
124 suggestionMap,
125 });
126 return Array.from(suggestionMap.keys());
127 });
128 }
129 /**
130 * Public: Obtain a complete version of a suggestion with additional information the language server can provide by
131 * way of the `completionItem/resolve` request.
132 *
133 * @param server An {ActiveServer} pointing to the language server to query.
134 * @param suggestion An {atom$AutocompleteSuggestion} suggestion that should be resolved.
135 * @param request An {Object} with the AutoComplete+ request to satisfy.
136 * @param onDidConvertCompletionItem An optional function that takes a {CompletionItem}, an
137 * {atom$AutocompleteSuggestion} and a {atom$AutocompleteRequest} allowing you to adjust converted items.
138 * @returns A {Promise} of an {atom$AutocompleteSuggestion} with the resolved AutoComplete+ suggestion.
139 */
140 completeSuggestion(server, suggestion, request, onDidConvertCompletionItem) {
141 return __awaiter(this, void 0, void 0, function* () {
142 const cache = this._suggestionCache.get(server);
143 if (cache) {
144 const possiblyResolvedCompletionItem = cache.suggestionMap.get(suggestion);
145 if (possiblyResolvedCompletionItem != null && !possiblyResolvedCompletionItem.isResolved) {
146 const resolvedCompletionItem = yield server.connection.completionItemResolve(possiblyResolvedCompletionItem.completionItem);
147 if (resolvedCompletionItem != null) {
148 AutocompleteAdapter.resolveSuggestion(resolvedCompletionItem, suggestion, request, onDidConvertCompletionItem);
149 possiblyResolvedCompletionItem.isResolved = true;
150 }
151 }
152 }
153 return suggestion;
154 });
155 }
156 static resolveSuggestion(resolvedCompletionItem, suggestion, request, onDidConvertCompletionItem) {
157 // only the `documentation` and `detail` properties may change when resolving
158 AutocompleteAdapter.applyDetailsToSuggestion(resolvedCompletionItem, suggestion);
159 if (onDidConvertCompletionItem != null) {
160 onDidConvertCompletionItem(resolvedCompletionItem, suggestion, request);
161 }
162 }
163 /**
164 * Public: Get the trigger character that caused the autocomplete (if any). This is required because AutoComplete-plus
165 * does not have trigger characters. Although the terminology is 'character' we treat them as variable length strings
166 * as this will almost certainly change in the future to support '->' etc.
167 *
168 * @param request An {Array} of {atom$AutocompleteSuggestion}s to locate the prefix, editor, bufferPosition etc.
169 * @param triggerChars The {Array} of {string}s that can be trigger characters.
170 * @returns A [{string}, boolean] where the string is the matching trigger character or an empty string if one was not
171 * matched, and the boolean is true if the trigger character is in request.prefix, and false if it is in the word
172 * before request.prefix. The boolean return value has no meaning if the string return value is an empty string.
173 */
174 static getTriggerCharacter(request, triggerChars) {
175 // AutoComplete-Plus considers text after a symbol to be a new trigger. So we should look backward
176 // from the current cursor position to see if one is there and thus simulate it.
177 const buffer = request.editor.getBuffer();
178 const cursor = request.bufferPosition;
179 const prefixStartColumn = cursor.column - request.prefix.length;
180 for (const triggerChar of triggerChars) {
181 if (request.prefix.endsWith(triggerChar)) {
182 return [triggerChar, true];
183 }
184 if (prefixStartColumn >= triggerChar.length) {
185 // Far enough along a line to fit the trigger char
186 const start = new atom_1.Point(cursor.row, prefixStartColumn - triggerChar.length);
187 const possibleTrigger = buffer.getTextInRange([start, [cursor.row, prefixStartColumn]]);
188 if (possibleTrigger === triggerChar) {
189 // The text before our trigger is a trigger char!
190 return [triggerChar, false];
191 }
192 }
193 }
194 // There was no explicit trigger char
195 return ["", false];
196 }
197 /**
198 * Public: Create TextDocumentPositionParams to be sent to the language server based on the editor and position from
199 * the AutoCompleteRequest.
200 *
201 * @param request The {atom$AutocompleteRequest} to obtain the editor from.
202 * @param triggerPoint The {atom$Point} where the trigger started.
203 * @returns A {string} containing the prefix including the trigger character.
204 */
205 static getPrefixWithTrigger(request, triggerPoint) {
206 return request.editor.getBuffer().getTextInRange([[triggerPoint.row, triggerPoint.column], request.bufferPosition]);
207 }
208 /**
209 * Public: Create {CompletionParams} to be sent to the language server based on the editor and position from the
210 * Autocomplete request etc.
211 *
212 * @param request The {atom$AutocompleteRequest} containing the request details.
213 * @param triggerCharacter The {string} containing the trigger character (empty if none).
214 * @param triggerOnly A {boolean} representing whether this completion is triggered right after a trigger character.
215 * @returns A {CompletionParams} with the keys:
216 *
217 * - `textDocument` the language server protocol textDocument identification.
218 * - `position` the position within the text document to display completion request for.
219 * - `context` containing the trigger character and kind.
220 */
221 static createCompletionParams(request, triggerCharacter, triggerOnly) {
222 return {
223 textDocument: convert_1.default.editorToTextDocumentIdentifier(request.editor),
224 position: convert_1.default.pointToPosition(request.bufferPosition),
225 context: AutocompleteAdapter.createCompletionContext(triggerCharacter, triggerOnly),
226 };
227 }
228 /**
229 * Public: Create {CompletionContext} to be sent to the language server based on the trigger character.
230 *
231 * @param triggerCharacter The {string} containing the trigger character or '' if none.
232 * @param triggerOnly A {boolean} representing whether this completion is triggered right after a trigger character.
233 * @returns An {CompletionContext} that specifies the triggerKind and the triggerCharacter if there is one.
234 */
235 static createCompletionContext(triggerCharacter, triggerOnly) {
236 if (triggerCharacter === "") {
237 return { triggerKind: languageclient_1.CompletionTriggerKind.Invoked };
238 }
239 else {
240 return triggerOnly
241 ? { triggerKind: languageclient_1.CompletionTriggerKind.TriggerCharacter, triggerCharacter }
242 : { triggerKind: languageclient_1.CompletionTriggerKind.TriggerForIncompleteCompletions, triggerCharacter };
243 }
244 }
245 /**
246 * Public: Convert a language server protocol CompletionItem array or CompletionList to an array of ordered
247 * AutoComplete+ suggestions.
248 *
249 * @param completionItems An {Array} of {CompletionItem} objects or a {CompletionList} containing completion items to
250 * be converted.
251 * @param request The {atom$AutocompleteRequest} to satisfy.
252 * @param shouldReplace The behavior of suggestion acceptance (see {ShouldReplace}).
253 * @param onDidConvertCompletionItem A function that takes a {CompletionItem}, an {atom$AutocompleteSuggestion} and a
254 * {atom$AutocompleteRequest} allowing you to adjust converted items.
255 * @returns A {Map} of AutoComplete+ suggestions ordered by the CompletionItems sortText.
256 */
257 completionItemsToSuggestions(completionItems, request, triggerColumns, shouldReplace, onDidConvertCompletionItem) {
258 const completionsArray = Array.isArray(completionItems)
259 ? completionItems
260 : (completionItems && completionItems.items) || [];
261 return new Map(completionsArray
262 .sort((a, b) => (a.sortText || a.label).localeCompare(b.sortText || b.label))
263 .map((s) => [
264 AutocompleteAdapter.completionItemToSuggestion(s, {}, request, triggerColumns, shouldReplace, onDidConvertCompletionItem),
265 new PossiblyResolvedCompletionItem(s, false),
266 ]));
267 }
268 /**
269 * Public: Convert a language server protocol CompletionItem to an AutoComplete+ suggestion.
270 *
271 * @param item An {CompletionItem} containing a completion item to be converted.
272 * @param suggestion A {atom$AutocompleteSuggestion} to have the conversion applied to.
273 * @param request The {atom$AutocompleteRequest} to satisfy.
274 * @param shouldReplace The behavior of suggestion acceptance (see {ShouldReplace}).
275 * @param onDidConvertCompletionItem A function that takes a {CompletionItem}, an {atom$AutocompleteSuggestion} and a
276 * {atom$AutocompleteRequest} allowing you to adjust converted items.
277 * @returns The {atom$AutocompleteSuggestion} passed in as suggestion with the conversion applied.
278 */
279 static completionItemToSuggestion(item, suggestion, request, triggerColumns, shouldReplace, onDidConvertCompletionItem) {
280 AutocompleteAdapter.applyCompletionItemToSuggestion(item, suggestion);
281 AutocompleteAdapter.applyTextEditToSuggestion(item.textEdit, request.editor, triggerColumns, request.bufferPosition, suggestion, shouldReplace);
282 AutocompleteAdapter.applySnippetToSuggestion(item, suggestion);
283 if (onDidConvertCompletionItem != null) {
284 onDidConvertCompletionItem(item, suggestion, request);
285 }
286 return suggestion;
287 }
288 /**
289 * Public: Convert the primary parts of a language server protocol CompletionItem to an AutoComplete+ suggestion.
290 *
291 * @param item An {CompletionItem} containing the completion items to be merged into.
292 * @param suggestion The {Suggestion} to merge the conversion into.
293 * @returns The {Suggestion} with details added from the {CompletionItem}.
294 */
295 static applyCompletionItemToSuggestion(item, suggestion) {
296 suggestion.text = item.insertText || item.label;
297 suggestion.filterText = item.filterText || item.label;
298 suggestion.displayText = item.label;
299 suggestion.type = AutocompleteAdapter.completionKindToSuggestionType(item.kind);
300 AutocompleteAdapter.applyDetailsToSuggestion(item, suggestion);
301 suggestion.completionItem = item;
302 }
303 static applyDetailsToSuggestion(item, suggestion) {
304 suggestion.rightLabel = item.detail;
305 // Older format, can't know what it is so assign to both and hope for best
306 if (typeof item.documentation === "string") {
307 suggestion.descriptionMarkdown = item.documentation;
308 suggestion.description = item.documentation;
309 }
310 if (item.documentation != null && typeof item.documentation === "object") {
311 // Newer format specifies the kind of documentation, assign appropriately
312 if (item.documentation.kind === "markdown") {
313 suggestion.descriptionMarkdown = item.documentation.value;
314 }
315 else {
316 suggestion.description = item.documentation.value;
317 }
318 }
319 }
320 /**
321 * Public: Applies the textEdit part of a language server protocol CompletionItem to an AutoComplete+ Suggestion via
322 * the replacementPrefix and text properties.
323 *
324 * @param textEdit A {TextEdit} from a CompletionItem to apply.
325 * @param editor An Atom {TextEditor} used to obtain the necessary text replacement.
326 * @param suggestion An {atom$AutocompleteSuggestion} to set the replacementPrefix and text properties of.
327 * @param shouldReplace The behavior of suggestion acceptance (see {ShouldReplace}).
328 */
329 static applyTextEditToSuggestion(textEdit, editor, triggerColumns, originalBufferPosition, suggestion, shouldReplace) {
330 if (!textEdit) {
331 return;
332 }
333 let range;
334 if ("range" in textEdit) {
335 range = textEdit.range;
336 }
337 else if (shouldReplace) {
338 range = textEdit.replace;
339 }
340 else {
341 range = textEdit.insert;
342 }
343 if (range.start.character !== triggerColumns[0]) {
344 const atomRange = convert_1.default.lsRangeToAtomRange(range);
345 suggestion.customReplacmentPrefix = editor.getTextInBufferRange([atomRange.start, originalBufferPosition]);
346 }
347 suggestion.text = textEdit.newText;
348 }
349 /**
350 * Handle additional text edits after a suggestion insert, e.g. `additionalTextEdits`.
351 *
352 * `additionalTextEdits` are An optional array of additional text edits that are applied when selecting this
353 * completion. Edits must not overlap (including the same insert position) with the main edit nor with themselves.
354 *
355 * Additional text edits should be used to change text unrelated to the current cursor position (for example adding an
356 * import statement at the top of the file if the completion item will insert an unqualified type).
357 */
358 static applyAdditionalTextEdits(event) {
359 var _a;
360 const suggestion = event.suggestion;
361 const additionalEdits = (_a = suggestion.completionItem) === null || _a === void 0 ? void 0 : _a.additionalTextEdits;
362 const buffer = event.editor.getBuffer();
363 apply_edit_adapter_1.default.applyEdits(buffer, convert_1.default.convertLsTextEdits(additionalEdits));
364 buffer.groupLastChanges();
365 }
366 /**
367 * Public: Adds a snippet to the suggestion if the CompletionItem contains snippet-formatted text
368 *
369 * @param item An {CompletionItem} containing the completion items to be merged into.
370 * @param suggestion The {atom$AutocompleteSuggestion} to merge the conversion into.
371 */
372 static applySnippetToSuggestion(item, suggestion) {
373 if (item.insertTextFormat === languageclient_1.InsertTextFormat.Snippet) {
374 suggestion.snippet = item.textEdit != null ? item.textEdit.newText : item.insertText || item.label;
375 }
376 }
377 /**
378 * Public: Obtain the textual suggestion type required by AutoComplete+ that most closely maps to the numeric
379 * completion kind supplies by the language server.
380 *
381 * @param kind A {Number} that represents the suggestion kind to be converted.
382 * @returns A {String} containing the AutoComplete+ suggestion type equivalent to the given completion kind.
383 */
384 static completionKindToSuggestionType(kind) {
385 switch (kind) {
386 case languageclient_1.CompletionItemKind.Constant:
387 return "constant";
388 case languageclient_1.CompletionItemKind.Method:
389 return "method";
390 case languageclient_1.CompletionItemKind.Function:
391 case languageclient_1.CompletionItemKind.Constructor:
392 return "function";
393 case languageclient_1.CompletionItemKind.Field:
394 case languageclient_1.CompletionItemKind.Property:
395 return "property";
396 case languageclient_1.CompletionItemKind.Variable:
397 return "variable";
398 case languageclient_1.CompletionItemKind.Class:
399 return "class";
400 case languageclient_1.CompletionItemKind.Struct:
401 case languageclient_1.CompletionItemKind.TypeParameter:
402 return "type";
403 case languageclient_1.CompletionItemKind.Operator:
404 return "selector";
405 case languageclient_1.CompletionItemKind.Interface:
406 return "mixin";
407 case languageclient_1.CompletionItemKind.Module:
408 return "module";
409 case languageclient_1.CompletionItemKind.Unit:
410 return "builtin";
411 case languageclient_1.CompletionItemKind.Enum:
412 case languageclient_1.CompletionItemKind.EnumMember:
413 return "enum";
414 case languageclient_1.CompletionItemKind.Keyword:
415 return "keyword";
416 case languageclient_1.CompletionItemKind.Snippet:
417 return "snippet";
418 case languageclient_1.CompletionItemKind.File:
419 case languageclient_1.CompletionItemKind.Folder:
420 return "import";
421 case languageclient_1.CompletionItemKind.Reference:
422 return "require";
423 default:
424 return "value";
425 }
426 }
427}
428exports.default = AutocompleteAdapter;
429/**
430 * Normalizes the given grammar scope for autoComplete package so it always starts with `.` Based on
431 * https://github.com/atom/autocomplete-plus/wiki/Autocomplete-Providers
432 *
433 * @param grammarScope Such as 'source.python' or '.source.python'
434 * @returns The normalized grammarScope such as `.source.python`
435 */
436function grammarScopeToAutoCompleteSelector(grammarScope) {
437 return grammarScope.includes(".") && grammarScope[0] !== "." ? `.${grammarScope}` : grammarScope;
438}
439exports.grammarScopeToAutoCompleteSelector = grammarScopeToAutoCompleteSelector;
440//# 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Convert from \"../convert\"\nimport * as Utils from \"../utils\"\nimport { CancellationTokenSource } from \"vscode-jsonrpc\"\nimport { ActiveServer } from \"../server-manager\"\nimport { ObjectArrayFilterer } from \"zadeh\"\nimport {\n  CompletionContext,\n  CompletionItem,\n  CompletionItemKind,\n  CompletionList,\n  CompletionParams,\n  CompletionTriggerKind,\n  InsertTextFormat,\n  InsertReplaceEdit,\n  LanguageClientConnection,\n  Range,\n  ServerCapabilities,\n  TextEdit,\n} from \"../languageclient\"\nimport ApplyEditAdapter from \"./apply-edit-adapter\"\nimport { Point, TextEditor } from \"atom\"\nimport * as ac from \"atom/autocomplete-plus\"\nimport { Suggestion, TextSuggestion, SnippetSuggestion, SuggestionBase } from \"../types/autocomplete-extended\"\n\n/**\n * Defines the behavior of suggestion acceptance. Assume you have \"cons|ole\" in the editor ( `|` is the cursor position)\n * and the autocomplete suggestion is `const`.\n *\n * - If `false` -> the edits are inserted : const|ole\n * - If `true`` -> the edits are replaced: const|\n */\ntype ShouldReplace = boolean\n\n/**\n * Holds a list of suggestions generated from the CompletionItem[] list sent by the server, as well as metadata about\n * the context it was collected in\n */\ninterface SuggestionCacheEntry {\n  /** If `true`, the server will send a list of suggestions to replace this one */\n  isIncomplete: boolean\n  /** The point left of the first character in the original prefix sent to the server */\n  triggerPoint: Point\n  /** The point right of the last character in the original prefix sent to the server */\n  originalBufferPoint: Point\n  /** The trigger string that caused the autocomplete (if any) */\n  triggerChar: string\n  suggestionMap: Map<Suggestion, PossiblyResolvedCompletionItem>\n}\n\ntype CompletionItemAdjuster = (\n  item: CompletionItem,\n  suggestion: ac.AnySuggestion,\n  request: ac.SuggestionsRequestedEvent\n) => void\n\nclass PossiblyResolvedCompletionItem {\n  constructor(public completionItem: CompletionItem, public isResolved: boolean) {}\n}\n\n/** Public: Adapts the language server protocol \"textDocument/completion\" to the Atom AutoComplete+ package. */\nexport default class AutocompleteAdapter {\n  public static canAdapt(serverCapabilities: ServerCapabilities): boolean {\n    return serverCapabilities.completionProvider != null\n  }\n\n  public static canResolve(serverCapabilities: ServerCapabilities): boolean {\n    return (\n      serverCapabilities.completionProvider != null && serverCapabilities.completionProvider.resolveProvider === true\n    )\n  }\n\n  private _suggestionCache: WeakMap<ActiveServer, SuggestionCacheEntry> = new WeakMap()\n  private _cancellationTokens: WeakMap<LanguageClientConnection, CancellationTokenSource> = new WeakMap()\n\n  /**\n   * Public: Obtain suggestion list for AutoComplete+ by querying the language server using the `textDocument/completion` request.\n   *\n   * @param server An {ActiveServer} pointing to the language server to query.\n   * @param request The {atom$AutocompleteRequest} to satisfy.\n   * @param onDidConvertCompletionItem An optional function that takes a {CompletionItem}, an\n   *   {atom$AutocompleteSuggestion} and a {atom$AutocompleteRequest} allowing you to adjust converted items.\n   * @param shouldReplace The behavior of suggestion acceptance (see {ShouldReplace}).\n   * @returns A {Promise} of an {Array} of {atom$AutocompleteSuggestion}s containing the AutoComplete+ suggestions to display.\n   */\n  public async getSuggestions(\n    server: ActiveServer,\n    request: ac.SuggestionsRequestedEvent,\n    onDidConvertCompletionItem?: CompletionItemAdjuster,\n    minimumWordLength?: number,\n    shouldReplace: ShouldReplace = false\n  ): Promise<ac.AnySuggestion[]> {\n    const triggerChars =\n      server.capabilities.completionProvider != null\n        ? server.capabilities.completionProvider.triggerCharacters || []\n        : []\n\n    // triggerOnly is true if we have just typed in a trigger character, and is false if we\n    // have typed additional characters following a trigger character.\n    const [triggerChar, triggerOnly] = AutocompleteAdapter.getTriggerCharacter(request, triggerChars)\n\n    if (!this.shouldTrigger(request, triggerChar, minimumWordLength || 0)) {\n      return []\n    }\n\n    // Get the suggestions either from the cache or by calling the language server\n    const suggestions = await this.getOrBuildSuggestions(\n      server,\n      request,\n      triggerChar,\n      triggerOnly,\n      shouldReplace,\n      onDidConvertCompletionItem\n    )\n\n    // We must update the replacement prefix as characters are added and removed\n    const cache = this._suggestionCache.get(server)!\n    const replacementPrefix = request.editor.getTextInBufferRange([\n      [cache.triggerPoint.row, cache.triggerPoint.column + cache.triggerChar.length],\n      request.bufferPosition,\n    ])\n    for (const suggestion of suggestions) {\n      if (suggestion.customReplacmentPrefix) {\n        // having this property means a custom range was provided\n        const len = replacementPrefix.length\n        const preReplacementPrefix =\n          suggestion.customReplacmentPrefix +\n          replacementPrefix.substring(len + cache.originalBufferPoint.column - request.bufferPosition.column, len)\n        // we cannot replace text after the cursor with the current autocomplete-plus API\n        // so we will simply ignore it for now\n        suggestion.replacementPrefix = preReplacementPrefix\n      } else {\n        suggestion.replacementPrefix = replacementPrefix\n      }\n    }\n\n    const filtered = !(request.prefix === \"\" || (triggerChar !== \"\" && triggerOnly))\n    if (filtered) {\n      // filter the suggestions who have `filterText` property\n      const validSuggestions = suggestions.filter((sgs) => typeof sgs.filterText === \"string\") as Suggestion[] &\n        { filterText: string }[]\n      // TODO use `ObjectArrayFilterer.setCandidate` in `_suggestionCache` to avoid creating `ObjectArrayFilterer` every time from scratch\n      const objFilterer = new ObjectArrayFilterer(validSuggestions, \"filterText\")\n      // zadeh returns an array of the selected `Suggestions`\n      return objFilterer.filter(request.prefix) as any as Suggestion[]\n    } else {\n      return suggestions\n    }\n  }\n\n  private shouldTrigger(request: ac.SuggestionsRequestedEvent, triggerChar: string, minWordLength: number): boolean {\n    return (\n      request.activatedManually || triggerChar !== \"\" || minWordLength <= 0 || request.prefix.length >= minWordLength\n    )\n  }\n\n  private async getOrBuildSuggestions(\n    server: ActiveServer,\n    request: ac.SuggestionsRequestedEvent,\n    triggerChar: string,\n    triggerOnly: boolean,\n    shouldReplace: ShouldReplace,\n    onDidConvertCompletionItem?: CompletionItemAdjuster\n  ): Promise<Suggestion[]> {\n    const cache = this._suggestionCache.get(server)\n\n    const triggerColumn =\n      triggerChar !== \"\" && triggerOnly\n        ? request.bufferPosition.column - triggerChar.length\n        : request.bufferPosition.column - request.prefix.length - triggerChar.length\n    const triggerPoint = new Point(request.bufferPosition.row, triggerColumn)\n\n    // Do we have complete cached suggestions that are still valid for this request?\n    if (\n      cache &&\n      !cache.isIncomplete &&\n      cache.triggerChar === triggerChar &&\n      cache.triggerPoint.isEqual(triggerPoint) &&\n      cache.originalBufferPoint.isLessThanOrEqual(request.bufferPosition)\n    ) {\n      return Array.from(cache.suggestionMap.keys())\n    }\n\n    // Our cached suggestions can't be used so obtain new ones from the language server\n    const completions = await Utils.doWithCancellationToken(\n      server.connection,\n      this._cancellationTokens,\n      (cancellationToken) =>\n        server.connection.completion(\n          AutocompleteAdapter.createCompletionParams(request, triggerChar, triggerOnly),\n          cancellationToken\n        )\n    )\n\n    // spec guarantees all edits are on the same line, so we only need to check the columns\n    const triggerColumns: [number, number] = [triggerPoint.column, request.bufferPosition.column]\n\n    // Setup the cache for subsequent filtered results\n    const isComplete = completions === null || Array.isArray(completions) || !completions.isIncomplete\n    const suggestionMap = this.completionItemsToSuggestions(\n      completions,\n      request,\n      triggerColumns,\n      shouldReplace,\n      onDidConvertCompletionItem\n    )\n    this._suggestionCache.set(server, {\n      isIncomplete: !isComplete,\n      triggerChar,\n      triggerPoint,\n      originalBufferPoint: request.bufferPosition,\n      suggestionMap,\n    })\n\n    return Array.from(suggestionMap.keys())\n  }\n\n  /**\n   * Public: Obtain a complete version of a suggestion with additional information the language server can provide by\n   * way of the `completionItem/resolve` request.\n   *\n   * @param server An {ActiveServer} pointing to the language server to query.\n   * @param suggestion An {atom$AutocompleteSuggestion} suggestion that should be resolved.\n   * @param request An {Object} with the AutoComplete+ request to satisfy.\n   * @param onDidConvertCompletionItem An optional function that takes a {CompletionItem}, an\n   *   {atom$AutocompleteSuggestion} and a {atom$AutocompleteRequest} allowing you to adjust converted items.\n   * @returns A {Promise} of an {atom$AutocompleteSuggestion} with the resolved AutoComplete+ suggestion.\n   */\n  public async completeSuggestion(\n    server: ActiveServer,\n    suggestion: ac.AnySuggestion,\n    request: ac.SuggestionsRequestedEvent,\n    onDidConvertCompletionItem?: CompletionItemAdjuster\n  ): Promise<ac.AnySuggestion> {\n    const cache = this._suggestionCache.get(server)\n    if (cache) {\n      const possiblyResolvedCompletionItem = cache.suggestionMap.get(suggestion)\n      if (possiblyResolvedCompletionItem != null && !possiblyResolvedCompletionItem.isResolved) {\n        const resolvedCompletionItem = await server.connection.completionItemResolve(\n          possiblyResolvedCompletionItem.completionItem\n        )\n        if (resolvedCompletionItem != null) {\n          AutocompleteAdapter.resolveSuggestion(resolvedCompletionItem, suggestion, request, onDidConvertCompletionItem)\n          possiblyResolvedCompletionItem.isResolved = true\n        }\n      }\n    }\n    return suggestion\n  }\n\n  public static resolveSuggestion(\n    resolvedCompletionItem: CompletionItem,\n    suggestion: ac.AnySuggestion,\n    request: ac.SuggestionsRequestedEvent,\n    onDidConvertCompletionItem?: CompletionItemAdjuster\n  ): void {\n    // only the `documentation` and `detail` properties may change when resolving\n    AutocompleteAdapter.applyDetailsToSuggestion(resolvedCompletionItem, suggestion)\n    if (onDidConvertCompletionItem != null) {\n      onDidConvertCompletionItem(resolvedCompletionItem, suggestion as ac.AnySuggestion, request)\n    }\n  }\n\n  /**\n   * Public: Get the trigger character that caused the autocomplete (if any). This is required because AutoComplete-plus\n   * does not have trigger characters. Although the terminology is 'character' we treat them as variable length strings\n   * as this will almost certainly change in the future to support '->' etc.\n   *\n   * @param request An {Array} of {atom$AutocompleteSuggestion}s to locate the prefix, editor, bufferPosition etc.\n   * @param triggerChars The {Array} of {string}s that can be trigger characters.\n   * @returns A [{string}, boolean] where the string is the matching trigger character or an empty string if one was not\n   *   matched, and the boolean is true if the trigger character is in request.prefix, and false if it is in the word\n   *   before request.prefix. The boolean return value has no meaning if the string return value is an empty string.\n   */\n  public static getTriggerCharacter(request: ac.SuggestionsRequestedEvent, triggerChars: string[]): [string, boolean] {\n    // AutoComplete-Plus considers text after a symbol to be a new trigger. So we should look backward\n    // from the current cursor position to see if one is there and thus simulate it.\n    const buffer = request.editor.getBuffer()\n    const cursor = request.bufferPosition\n    const prefixStartColumn = cursor.column - request.prefix.length\n    for (const triggerChar of triggerChars) {\n      if (request.prefix.endsWith(triggerChar)) {\n        return [triggerChar, true]\n      }\n      if (prefixStartColumn >= triggerChar.length) {\n        // Far enough along a line to fit the trigger char\n        const start = new Point(cursor.row, prefixStartColumn - triggerChar.length)\n        const possibleTrigger = buffer.getTextInRange([start, [cursor.row, prefixStartColumn]])\n        if (possibleTrigger === triggerChar) {\n          // The text before our trigger is a trigger char!\n          return [triggerChar, false]\n        }\n      }\n    }\n\n    // There was no explicit trigger char\n    return [\"\", false]\n  }\n\n  /**\n   * Public: Create TextDocumentPositionParams to be sent to the language server based on the editor and position from\n   * the AutoCompleteRequest.\n   *\n   * @param request The {atom$AutocompleteRequest} to obtain the editor from.\n   * @param triggerPoint The {atom$Point} where the trigger started.\n   * @returns A {string} containing the prefix including the trigger character.\n   */\n  public static getPrefixWithTrigger(request: ac.SuggestionsRequestedEvent, triggerPoint: Point): string {\n    return request.editor.getBuffer().getTextInRange([[triggerPoint.row, triggerPoint.column], request.bufferPosition])\n  }\n\n  /**\n   * Public: Create {CompletionParams} to be sent to the language server based on the editor and position from the\n   * Autocomplete request etc.\n   *\n   * @param request The {atom$AutocompleteRequest} containing the request details.\n   * @param triggerCharacter The {string} containing the trigger character (empty if none).\n   * @param triggerOnly A {boolean} representing whether this completion is triggered right after a trigger character.\n   * @returns A {CompletionParams} with the keys:\n   *\n   *   - `textDocument` the language server protocol textDocument identification.\n   *   - `position` the position within the text document to display completion request for.\n   *   - `context` containing the trigger character and kind.\n   */\n  public static createCompletionParams(\n    request: ac.SuggestionsRequestedEvent,\n    triggerCharacter: string,\n    triggerOnly: boolean\n  ): CompletionParams {\n    return {\n      textDocument: Convert.editorToTextDocumentIdentifier(request.editor),\n      position: Convert.pointToPosition(request.bufferPosition),\n      context: AutocompleteAdapter.createCompletionContext(triggerCharacter, triggerOnly),\n    }\n  }\n\n  /**\n   * Public: Create {CompletionContext} to be sent to the language server based on the trigger character.\n   *\n   * @param triggerCharacter The {string} containing the trigger character or '' if none.\n   * @param triggerOnly A {boolean} representing whether this completion is triggered right after a trigger character.\n   * @returns An {CompletionContext} that specifies the triggerKind and the triggerCharacter if there is one.\n   */\n  public static createCompletionContext(triggerCharacter: string, triggerOnly: boolean): CompletionContext {\n    if (triggerCharacter === \"\") {\n      return { triggerKind: CompletionTriggerKind.Invoked }\n    } else {\n      return triggerOnly\n        ? { triggerKind: CompletionTriggerKind.TriggerCharacter, triggerCharacter }\n        : { triggerKind: CompletionTriggerKind.TriggerForIncompleteCompletions, triggerCharacter }\n    }\n  }\n\n  /**\n   * Public: Convert a language server protocol CompletionItem array or CompletionList to an array of ordered\n   * AutoComplete+ suggestions.\n   *\n   * @param completionItems An {Array} of {CompletionItem} objects or a {CompletionList} containing completion items to\n   *   be converted.\n   * @param request The {atom$AutocompleteRequest} to satisfy.\n   * @param shouldReplace The behavior of suggestion acceptance (see {ShouldReplace}).\n   * @param onDidConvertCompletionItem A function that takes a {CompletionItem}, an {atom$AutocompleteSuggestion} and a\n   *   {atom$AutocompleteRequest} allowing you to adjust converted items.\n   * @returns A {Map} of AutoComplete+ suggestions ordered by the CompletionItems sortText.\n   */\n  public completionItemsToSuggestions(\n    completionItems: CompletionItem[] | CompletionList | null,\n    request: ac.SuggestionsRequestedEvent,\n    triggerColumns: [number, number],\n    shouldReplace: ShouldReplace,\n    onDidConvertCompletionItem?: CompletionItemAdjuster\n  ): Map<Suggestion, PossiblyResolvedCompletionItem> {\n    const completionsArray = Array.isArray(completionItems)\n      ? completionItems\n      : (completionItems && completionItems.items) || []\n    return new Map(\n      completionsArray\n        .sort((a, b) => (a.sortText || a.label).localeCompare(b.sortText || b.label))\n        .map<[Suggestion, PossiblyResolvedCompletionItem]>((s) => [\n          AutocompleteAdapter.completionItemToSuggestion(\n            s,\n            {} as Suggestion,\n            request,\n            triggerColumns,\n            shouldReplace,\n            onDidConvertCompletionItem\n          ),\n          new PossiblyResolvedCompletionItem(s, false),\n        ])\n    )\n  }\n\n  /**\n   * Public: Convert a language server protocol CompletionItem to an AutoComplete+ suggestion.\n   *\n   * @param item An {CompletionItem} containing a completion item to be converted.\n   * @param suggestion A {atom$AutocompleteSuggestion} to have the conversion applied to.\n   * @param request The {atom$AutocompleteRequest} to satisfy.\n   * @param shouldReplace The behavior of suggestion acceptance (see {ShouldReplace}).\n   * @param onDidConvertCompletionItem A function that takes a {CompletionItem}, an {atom$AutocompleteSuggestion} and a\n   *   {atom$AutocompleteRequest} allowing you to adjust converted items.\n   * @returns The {atom$AutocompleteSuggestion} passed in as suggestion with the conversion applied.\n   */\n  public static completionItemToSuggestion(\n    item: CompletionItem,\n    suggestion: Suggestion,\n    request: ac.SuggestionsRequestedEvent,\n    triggerColumns: [number, number],\n    shouldReplace: ShouldReplace,\n    onDidConvertCompletionItem?: CompletionItemAdjuster\n  ): Suggestion {\n    AutocompleteAdapter.applyCompletionItemToSuggestion(item, suggestion as TextSuggestion)\n    AutocompleteAdapter.applyTextEditToSuggestion(\n      item.textEdit,\n      request.editor,\n      triggerColumns,\n      request.bufferPosition,\n      suggestion as TextSuggestion,\n      shouldReplace\n    )\n    AutocompleteAdapter.applySnippetToSuggestion(item, suggestion as SnippetSuggestion)\n    if (onDidConvertCompletionItem != null) {\n      onDidConvertCompletionItem(item, suggestion as ac.AnySuggestion, request)\n    }\n\n    return suggestion\n  }\n\n  /**\n   * Public: Convert the primary parts of a language server protocol CompletionItem to an AutoComplete+ suggestion.\n   *\n   * @param item An {CompletionItem} containing the completion items to be merged into.\n   * @param suggestion The {Suggestion} to merge the conversion into.\n   * @returns The {Suggestion} with details added from the {CompletionItem}.\n   */\n  public static applyCompletionItemToSuggestion(item: CompletionItem, suggestion: TextSuggestion): void {\n    suggestion.text = item.insertText || item.label\n    suggestion.filterText = item.filterText || item.label\n    suggestion.displayText = item.label\n    suggestion.type = AutocompleteAdapter.completionKindToSuggestionType(item.kind)\n    AutocompleteAdapter.applyDetailsToSuggestion(item, suggestion)\n    suggestion.completionItem = item\n  }\n\n  public static applyDetailsToSuggestion(item: CompletionItem, suggestion: Suggestion): void {\n    suggestion.rightLabel = item.detail\n\n    // Older format, can't know what it is so assign to both and hope for best\n    if (typeof item.documentation === \"string\") {\n      suggestion.descriptionMarkdown = item.documentation\n      suggestion.description = item.documentation\n    }\n\n    if (item.documentation != null && typeof item.documentation === \"object\") {\n      // Newer format specifies the kind of documentation, assign appropriately\n      if (item.documentation.kind === \"markdown\") {\n        suggestion.descriptionMarkdown = item.documentation.value\n      } else {\n        suggestion.description = item.documentation.value\n      }\n    }\n  }\n\n  /**\n   * Public: Applies the textEdit part of a language server protocol CompletionItem to an AutoComplete+ Suggestion via\n   * the replacementPrefix and text properties.\n   *\n   * @param textEdit A {TextEdit} from a CompletionItem to apply.\n   * @param editor An Atom {TextEditor} used to obtain the necessary text replacement.\n   * @param suggestion An {atom$AutocompleteSuggestion} to set the replacementPrefix and text properties of.\n   * @param shouldReplace The behavior of suggestion acceptance (see {ShouldReplace}).\n   */\n  public static applyTextEditToSuggestion(\n    textEdit: TextEdit | InsertReplaceEdit | undefined,\n    editor: TextEditor,\n    triggerColumns: [number, number],\n    originalBufferPosition: Point,\n    suggestion: TextSuggestion,\n    shouldReplace: ShouldReplace\n  ): void {\n    if (!textEdit) {\n      return\n    }\n    let range: Range\n    if (\"range\" in textEdit) {\n      range = textEdit.range\n    } else if (shouldReplace) {\n      range = textEdit.replace\n    } else {\n      range = textEdit.insert\n    }\n\n    if (range.start.character !== triggerColumns[0]) {\n      const atomRange = Convert.lsRangeToAtomRange(range)\n      suggestion.customReplacmentPrefix = editor.getTextInBufferRange([atomRange.start, originalBufferPosition])\n    }\n    suggestion.text = textEdit.newText\n  }\n\n  /**\n   * Handle additional text edits after a suggestion insert, e.g. `additionalTextEdits`.\n   *\n   * `additionalTextEdits` are An optional array of additional text edits that are applied when selecting this\n   * completion. Edits must not overlap (including the same insert position) with the main edit nor with themselves.\n   *\n   * Additional text edits should be used to change text unrelated to the current cursor position (for example adding an\n   * import statement at the top of the file if the completion item will insert an unqualified type).\n   */\n  public static applyAdditionalTextEdits(event: ac.SuggestionInsertedEvent): void {\n    const suggestion = event.suggestion as SuggestionBase\n    const additionalEdits = suggestion.completionItem?.additionalTextEdits\n    const buffer = event.editor.getBuffer()\n\n    ApplyEditAdapter.applyEdits(buffer, Convert.convertLsTextEdits(additionalEdits))\n    buffer.groupLastChanges()\n  }\n\n  /**\n   * Public: Adds a snippet to the suggestion if the CompletionItem contains snippet-formatted text\n   *\n   * @param item An {CompletionItem} containing the completion items to be merged into.\n   * @param suggestion The {atom$AutocompleteSuggestion} to merge the conversion into.\n   */\n  public static applySnippetToSuggestion(item: CompletionItem, suggestion: SnippetSuggestion): void {\n    if (item.insertTextFormat === InsertTextFormat.Snippet) {\n      suggestion.snippet = item.textEdit != null ? item.textEdit.newText : item.insertText || item.label\n    }\n  }\n\n  /**\n   * Public: Obtain the textual suggestion type required by AutoComplete+ that most closely maps to the numeric\n   * completion kind supplies by the language server.\n   *\n   * @param kind A {Number} that represents the suggestion kind to be converted.\n   * @returns A {String} containing the AutoComplete+ suggestion type equivalent to the given completion kind.\n   */\n  public static completionKindToSuggestionType(kind: number | undefined): string {\n    switch (kind) {\n      case CompletionItemKind.Constant:\n        return \"constant\"\n      case CompletionItemKind.Method:\n        return \"method\"\n      case CompletionItemKind.Function:\n      case CompletionItemKind.Constructor:\n        return \"function\"\n      case CompletionItemKind.Field:\n      case CompletionItemKind.Property:\n        return \"property\"\n      case CompletionItemKind.Variable:\n        return \"variable\"\n      case CompletionItemKind.Class:\n        return \"class\"\n      case CompletionItemKind.Struct:\n      case CompletionItemKind.TypeParameter:\n        return \"type\"\n      case CompletionItemKind.Operator:\n        return \"selector\"\n      case CompletionItemKind.Interface:\n        return \"mixin\"\n      case CompletionItemKind.Module:\n        return \"module\"\n      case CompletionItemKind.Unit:\n        return \"builtin\"\n      case CompletionItemKind.Enum:\n      case CompletionItemKind.EnumMember:\n        return \"enum\"\n      case CompletionItemKind.Keyword:\n        return \"keyword\"\n      case CompletionItemKind.Snippet:\n        return \"snippet\"\n      case CompletionItemKind.File:\n      case CompletionItemKind.Folder:\n        return \"import\"\n      case CompletionItemKind.Reference:\n        return \"require\"\n      default:\n        return \"value\"\n    }\n  }\n}\n\n/**\n * Normalizes the given grammar scope for autoComplete package so it always starts with `.` Based on\n * https://github.com/atom/autocomplete-plus/wiki/Autocomplete-Providers\n *\n * @param grammarScope Such as 'source.python' or '.source.python'\n * @returns The normalized grammarScope such as `.source.python`\n */\nexport function grammarScopeToAutoCompleteSelector(grammarScope: string): string {\n  return grammarScope.includes(\".\") && grammarScope[0] !== \".\" ? `.${grammarScope}` : grammarScope\n}\n"]}
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