Allow VS Code to recognise files with "sourcekit-lsp" scheme and pass it to SourceKitLSP inorder to provide Semantic Functionality (#990)

Author: lokesh-tr

Diff for: src/WorkspaceContext.ts

@@ -518,7 +518,10 @@ export class WorkspaceContext implements vscode.Disposable {
     async focusUri(uri?: vscode.Uri) {
         this.currentDocument = uri ?? null;
         this.updateContextKeysForFile();
-        if (this.currentDocument?.scheme === "file") {
+        if (
+            this.currentDocument?.scheme === "file" ||
+            this.currentDocument?.scheme === "sourcekit-lsp"
+        ) {
             await this.focusPackageUri(this.currentDocument);
         }
     }

Diff for: src/sourcekit-lsp/LanguageClientManager.ts

@@ -44,6 +44,7 @@ export class LanguageClientManager {
 
     // document selector used by language client
     static appleLangDocumentSelector = [
+        { scheme: "sourcekit-lsp", language: "swift" },
         { scheme: "file", language: "swift" },
         { scheme: "untitled", language: "swift" },
         { scheme: "file", language: "objective-c" },

Diff for: src/sourcekit-lsp/getReferenceDocument.ts

@@ -22,7 +22,7 @@ export function activateGetReferenceDocument(client: langclient.LanguageClient):
         {
             provideTextDocumentContent: async (uri, token) => {
                 const params: GetReferenceDocumentParams = {
-                    uri: uri.toString(true),
+                    uri: client.code2ProtocolConverter.asUri(uri),
                 };
 
                 const result = await client.sendRequest(GetReferenceDocumentRequest, params, token);

Diff for: src/sourcekit-lsp/peekDocuments.ts

@@ -21,9 +21,8 @@ export function activatePeekDocuments(client: langclient.LanguageClient): vscode
         PeekDocumentsRequest.method,
         async (params: PeekDocumentsParams) => {
             const locations = params.locations.map(uri => {
-                const url = new URL(uri);
                 const location = new vscode.Location(
-                    vscode.Uri.parse(url.href, true),
+                    client.protocol2CodeConverter.asUri(uri),
                     new vscode.Position(0, 0)
                 );
 
@@ -32,10 +31,7 @@ export function activatePeekDocuments(client: langclient.LanguageClient): vscode
 
             await vscode.commands.executeCommand(
                 "editor.action.peekLocations",
-                vscode.Uri.from({
-                    scheme: "file",
-                    path: new URL(params.uri).pathname,
-                }),
+                client.protocol2CodeConverter.asUri(params.uri),
                 new vscode.Position(params.position.line, params.position.character),
                 locations,
                 "peek"