Move `DefinitionAdapter` and `ReferenceAdapter` to `/common/`

src/common/lspLanguageFeatures.ts

@@ -398,7 +398,7 @@ export interface ILanguageWorkerWithHover {
 }
 
 export class HoverAdapter<T extends ILanguageWorkerWithHover> implements languages.HoverProvider {
-	constructor(private _worker: WorkerAccessor<T>) {}
+	constructor(private readonly _worker: WorkerAccessor<T>) {}
 
 	provideHover(
 		model: editor.IReadOnlyModel,
@@ -475,7 +475,7 @@ export interface ILanguageWorkerWithDocumentHighlights {
 export class DocumentHighlightAdapter<T extends ILanguageWorkerWithDocumentHighlights>
 	implements languages.DocumentHighlightProvider
 {
-	constructor(private _worker: WorkerAccessor<T>) {}
+	constructor(private readonly _worker: WorkerAccessor<T>) {}
 
 	public provideDocumentHighlights(
 		model: editor.IReadOnlyModel,
@@ -515,3 +515,77 @@ function toDocumentHighlightKind(
 }
 
 //#endregion
+
+//#region DefinitionAdapter
+
+export interface ILanguageWorkerWithDefinitions {
+	findDefinition(uri: string, position: lsTypes.Position): Promise<lsTypes.Location>;
+}
+
+export class DefinitionAdapter<T extends ILanguageWorkerWithDefinitions>
+	implements languages.DefinitionProvider
+{
+	constructor(private readonly _worker: WorkerAccessor<T>) {}
+
+	public provideDefinition(
+		model: editor.IReadOnlyModel,
+		position: Position,
+		token: CancellationToken
+	): Promise<languages.Definition> {
+		const resource = model.uri;
+
+		return this._worker(resource)
+			.then((worker) => {
+				return worker.findDefinition(resource.toString(), fromPosition(position));
+			})
+			.then((definition) => {
+				if (!definition) {
+					return;
+				}
+				return [toLocation(definition)];
+			});
+	}
+}
+
+function toLocation(location: lsTypes.Location): languages.Location {
+	return {
+		uri: Uri.parse(location.uri),
+		range: toRange(location.range)
+	};
+}
+
+//#endregion
+
+//#region ReferenceAdapter
+
+export interface ILanguageWorkerWithReferences {
+	findReferences(uri: string, position: lsTypes.Position): Promise<lsTypes.Location[]>;
+}
+
+export class ReferenceAdapter<T extends ILanguageWorkerWithReferences>
+	implements languages.ReferenceProvider
+{
+	constructor(private readonly _worker: WorkerAccessor<T>) {}
+
+	provideReferences(
+		model: editor.IReadOnlyModel,
+		position: Position,
+		context: languages.ReferenceContext,
+		token: CancellationToken
+	): Promise<languages.Location[]> {
+		const resource = model.uri;
+
+		return this._worker(resource)
+			.then((worker) => {
+				return worker.findReferences(resource.toString(), fromPosition(position));
+			})
+			.then((entries) => {
+				if (!entries) {
+					return;
+				}
+				return entries.map(toLocation);
+			});
+	}
+}
+
+//#endregion

src/css/cssMode.ts

@@ -50,7 +50,7 @@ export function setupMode(defaults: LanguageServiceDefaults): IDisposable {
 			providers.push(
 				languages.registerDefinitionProvider(
 					languageId,
-					new languageFeatures.DefinitionAdapter(worker)
+					new languageFeatures.CSSDefinitionAdapter(worker)
 				)
 			);
 		}
@@ -58,7 +58,7 @@ export function setupMode(defaults: LanguageServiceDefaults): IDisposable {
 			providers.push(
 				languages.registerReferenceProvider(
 					languageId,
-					new languageFeatures.ReferenceAdapter(worker)
+					new languageFeatures.CSSReferenceAdapter(worker)
 				)
 			);
 		}

src/css/languageFeatures.ts

@@ -15,7 +15,9 @@ import {
 	fromRange,
 	CompletionAdapter,
 	HoverAdapter,
-	DocumentHighlightAdapter
+	DocumentHighlightAdapter,
+	DefinitionAdapter,
+	ReferenceAdapter
 } from '../common/lspLanguageFeatures';
 
 export interface WorkerAccessor {
@@ -38,63 +40,9 @@ export class CSSHoverAdapter extends HoverAdapter<CSSWorker> {}
 
 export class CSSDocumentHighlightAdapter extends DocumentHighlightAdapter<CSSWorker> {}
 
-// --- definition ------
+export class CSSDefinitionAdapter extends DefinitionAdapter<CSSWorker> {}
 
-function toLocation(location: lsTypes.Location): languages.Location {
-	return {
-		uri: Uri.parse(location.uri),
-		range: toRange(location.range)
-	};
-}
-
-export class DefinitionAdapter {
-	constructor(private _worker: WorkerAccessor) {}
-
-	public provideDefinition(
-		model: editor.IReadOnlyModel,
-		position: Position,
-		token: CancellationToken
-	): Promise<languages.Definition> {
-		const resource = model.uri;
-
-		return this._worker(resource)
-			.then((worker) => {
-				return worker.findDefinition(resource.toString(), fromPosition(position));
-			})
-			.then((definition) => {
-				if (!definition) {
-					return;
-				}
-				return [toLocation(definition)];
-			});
-	}
-}
-
-// --- references ------
-
-export class ReferenceAdapter implements languages.ReferenceProvider {
-	constructor(private _worker: WorkerAccessor) {}
-
-	provideReferences(
-		model: editor.IReadOnlyModel,
-		position: Position,
-		context: languages.ReferenceContext,
-		token: CancellationToken
-	): Promise<languages.Location[]> {
-		const resource = model.uri;
-
-		return this._worker(resource)
-			.then((worker) => {
-				return worker.findReferences(resource.toString(), fromPosition(position));
-			})
-			.then((entries) => {
-				if (!entries) {
-					return;
-				}
-				return entries.map(toLocation);
-			});
-	}
-}
+export class CSSReferenceAdapter extends ReferenceAdapter<CSSWorker> {}
 
 // --- rename ------