Display query text in "virtual" (readonly) file

extensions/ql-vscode/src/extension.ts

@@ -12,7 +12,9 @@ import {
   env,
   window,
   QuickPickItem,
-  Range
+  Range,
+  workspace,
+  ProviderResult
 } from 'vscode';
 import { LanguageClient } from 'vscode-languageclient';
 import * as os from 'os';
@@ -78,6 +80,7 @@ import { CodeQlStatusBarHandler } from './status-bar';
 import { Credentials } from './authentication';
 import { RemoteQueriesManager } from './remote-queries/remote-queries-manager';
 import { RemoteQuery } from './remote-queries/remote-query';
+import { URLSearchParams } from 'url';
 
 /**
  * extension.ts
@@ -773,6 +776,8 @@ async function activateWithInstalledDistribution(
   void logger.log('Initializing remote queries interface.');
   const rqm = new RemoteQueriesManager(ctx, logger, cliServer);
 
+  registerTextProvider();
+
   // The "runRemoteQuery" command is internal-only.
   ctx.subscriptions.push(
     commandRunnerWithProgress('codeQL.runRemoteQuery', async (
@@ -980,3 +985,20 @@ async function initializeLogging(ctx: ExtensionContext): Promise<void> {
 }
 
 const checkForUpdatesCommand = 'codeQL.checkForUpdatesToCLI';
+
+/**
+ * This text provider lets us open readonly files in the editor.
+ * 
+ * TODO: Consolidate this with the 'codeql' text provider in query-history.ts.
+ */
+function registerTextProvider() {
+  workspace.registerTextDocumentContentProvider('remote-query', {
+    provideTextDocumentContent(
+      uri: Uri
+    ): ProviderResult<string> {
+      const params = new URLSearchParams(uri.query);
+
+      return params.get('queryText');
+    },
+  });
+}

extensions/ql-vscode/src/pure/interface-types.ts

@@ -181,6 +181,11 @@ export interface OpenFileMsg {
   filePath: string;
 }
 
+export interface OpenVirtualFileMsg {
+  t: 'openVirtualFile';
+  queryText: string;
+}
+
 /**
  * Message from the results view to toggle the display of
  * query diagnostics.
@@ -369,7 +374,8 @@ export interface ParsedResultSets {
 export type FromRemoteQueriesMessage =
   | RemoteQueryLoadedMessage
   | RemoteQueryErrorMessage
-  | OpenFileMsg;
+  | OpenFileMsg
+  | OpenVirtualFileMsg;
 
 export type ToRemoteQueriesMessage =
   | SetRemoteQueryResultMessage;

extensions/ql-vscode/src/query-history.ts

@@ -32,7 +32,7 @@ export type QueryHistoryItemOptions = {
   isQuickQuery?: boolean;
 };
 
-const SHOW_QUERY_TEXT_MSG = `\
+export const SHOW_QUERY_TEXT_MSG = `\
 ////////////////////////////////////////////////////////////////////////////////////
 // This is the text of the entire query file when it was executed for this query  //
 // run. The text or dependent libraries may have changed since then.              //

extensions/ql-vscode/src/remote-queries/remote-queries-interface.ts

@@ -21,6 +21,8 @@ import { RemoteQuery } from './remote-query';
 import { RemoteQueryResult as RemoteQueryResultViewModel } from './shared/remote-query-result';
 import { AnalysisResult as AnalysisResultViewModel } from './shared/remote-query-result';
 import { showAndLogWarningMessage } from '../helpers';
+import { URLSearchParams } from 'url';
+import { SHOW_QUERY_TEXT_MSG } from '../query-history';
 
 export class RemoteQueriesInterfaceManager {
   private panel: WebviewPanel | undefined;
@@ -65,7 +67,7 @@ export class RemoteQueriesInterfaceManager {
       queryTitle: query.queryName,
       queryFileName: queryFileName,
       queryFilePath: query.queryFilePath,
-      queryTextTmpFilePath: query.queryTextTmpFilePath,
+      queryText: query.queryText,
       totalRepositoryCount: query.repositories.length,
       affectedRepositoryCount: affectedRepositories.length,
       totalResultCount: totalResultCount,
@@ -142,6 +144,22 @@ export class RemoteQueriesInterfaceManager {
     }
   }
 
+  private async openVirtualFile(text: string) {
+    try {
+      const params = new URLSearchParams({
+        queryText: encodeURIComponent(SHOW_QUERY_TEXT_MSG + text)
+      });
+      const uri = Uri.parse(
+        `remote-query:query-text.ql?${params.toString()}`,
+        true
+      );
+      const doc = await workspace.openTextDocument(uri);
+      await Window.showTextDocument(doc, { preview: false });
+    } catch (error) {
+      void showAndLogWarningMessage('Could not open query text');
+    }
+  }
+
   private async handleMsgFromView(
     msg: FromRemoteQueriesMessage
   ): Promise<void> {
@@ -159,6 +177,9 @@ export class RemoteQueriesInterfaceManager {
       case 'openFile':
         await this.openFile(msg.filePath);
         break;
+      case 'openVirtualFile':
+        await this.openVirtualFile(msg.queryText);
+        break;
       default:
         assertNever(msg);
     }

extensions/ql-vscode/src/remote-queries/remote-query.ts

@@ -3,7 +3,7 @@ import { Repository } from './repository';
 export interface RemoteQuery {
   queryName: string;
   queryFilePath: string;
-  queryTextTmpFilePath: string;
+  queryText: string;
   controllerRepository: Repository;
   repositories: Repository[];
   executionStartTime: Date;

extensions/ql-vscode/src/remote-queries/run-remote-query.ts

@@ -467,26 +467,12 @@ async function buildRemoteQueryEntity(
     return { owner: owner, name: repo };
   });
 
-  // Get the query text from query file and save it in a temporary .ql file. 
-  const queryTextTmpFilePath = path.join(tmpDir.name, `tmp-${queryName}`);
   const queryText = await fs.readFile(queryFilePath, 'utf8');
-  await fs.writeFile(
-    queryTextTmpFilePath, `\
-////////////////////////////////////////////////////////////////////////////////////
-// This is the text of the entire query file when it was executed for this query  //
-// run. The text or dependent libraries may have changed since then.              //
-//                                                                                //
-// To make changes to the query and the dependent libraries, save this file in a  //
-// suitable, permanent location.                                                  //
-////////////////////////////////////////////////////////////////////////////////////
-
-${queryText}`
-  );
 
   return {
     queryName,
     queryFilePath,
-    queryTextTmpFilePath,
+    queryText,
     controllerRepository: {
       owner: controllerRepoOwner,
       name: controllerRepoName,

extensions/ql-vscode/src/remote-queries/shared/remote-query-result.ts

@@ -2,7 +2,7 @@ export interface RemoteQueryResult {
   queryTitle: string;
   queryFileName: string;
   queryFilePath: string;
-  queryTextTmpFilePath: string;
+  queryText: string;
   totalRepositoryCount: number;
   affectedRepositoryCount: number;
   totalResultCount: number;

extensions/ql-vscode/src/remote-queries/view/RemoteQueries.tsx

@@ -13,7 +13,7 @@ const emptyQueryResult: RemoteQueryResult = {
   queryTitle: '',
   queryFileName: '',
   queryFilePath: '',
-  queryTextTmpFilePath: '',
+  queryText: '',
   totalRepositoryCount: 0,
   affectedRepositoryCount: 0,
   totalResultCount: 0,
@@ -40,13 +40,6 @@ const AnalysisResultItem = (props: AnalysisResult) => (
   </span>
 );
 
-function openFile(filePath: string): void {
-  vscode.postMessage({
-    t: 'openFile',
-    filePath
-  });
-}
-
 export function RemoteQueries(): JSX.Element {
   const [queryResult, setQueryResult] = useState<RemoteQueryResult>(emptyQueryResult);
 
@@ -74,11 +67,17 @@ export function RemoteQueries(): JSX.Element {
 
   try {
     const openQueryFile = () => {
-      openFile(queryResult.queryFilePath);
+      vscode.postMessage({
+        t: 'openFile',
+        filePath: queryResult.queryFilePath
+      });
     };
 
     const openQueryTextTmpFile = () => {
-      openFile(queryResult.queryTextTmpFilePath);
+      vscode.postMessage({
+        t: 'openVirtualFile',
+        queryText: queryResult.queryText
+      });
     };
 
     return <div className="vscode-codeql__remote-queries-view">