Code lens support for running tests

editors/code/src/commands/index.ts

@@ -4,6 +4,7 @@ import * as joinLines from './join_lines';
 import * as matchingBrace from './matching_brace';
 import * as onEnter from './on_enter';
 import * as parentModule from './parent_module';
+import * as runSingle from './run_single';
 import * as runnables from './runnables';
 import * as syntaxTree from './syntaxTree';
 
@@ -13,6 +14,7 @@ export {
     joinLines,
     matchingBrace,
     parentModule,
+    runSingle,
     runnables,
     syntaxTree,
     onEnter

editors/code/src/commands/run_single.ts

@@ -0,0 +1,63 @@
+import * as vscode from 'vscode';
+import * as lc from 'vscode-languageclient';
+
+interface Runnable {
+    range: lc.Range;
+    label: string;
+    bin: string;
+    args: string[];
+    env: { [index: string]: string };
+}
+
+interface CargoTaskDefinition extends vscode.TaskDefinition {
+    type: 'cargo';
+    label: string;
+    command: string;
+    args: string[];
+    env?: { [key: string]: string };
+}
+
+function createTask(spec: Runnable): vscode.Task {
+    const TASK_SOURCE = 'Rust';
+    const definition: CargoTaskDefinition = {
+        type: 'cargo',
+        label: 'cargo',
+        command: spec.bin,
+        args: spec.args,
+        env: spec.env
+    };
+
+    const execOption: vscode.ShellExecutionOptions = {
+        cwd: '.',
+        env: definition.env
+    };
+    const exec = new vscode.ShellExecution(definition.command, definition.args, execOption);
+
+    const f = vscode.workspace.workspaceFolders![0];
+    const t = new vscode.Task(
+        definition,
+        f,
+        definition.label,
+        TASK_SOURCE,
+        exec,
+        ['$rustc']
+    );
+    t.presentationOptions.clear = true
+    return t;
+}
+
+export async function handle(runnable: Runnable) {
+    const editor = vscode.window.activeTextEditor;
+    if (editor == null || editor.document.languageId !== 'rust') {
+        return;
+    }
+
+    const task = createTask(runnable);
+    task.group = vscode.TaskGroup.Build;
+    task.presentationOptions = {
+        reveal: vscode.TaskRevealKind.Always,
+        panel: vscode.TaskPanelKind.Dedicated,
+    };
+    
+    return vscode.tasks.executeTask(task);
+}

editors/code/src/extension.ts

@@ -55,6 +55,9 @@ export function activate(context: vscode.ExtensionContext) {
     );
     overrideCommand('type', commands.onEnter.handle);
 
+    // Unlike the above this does not send requests to the language server
+    registerCommand('ra-lsp.run-single', commands.runSingle.handle);
+
     // Notifications are events triggered by the language server
     const allNotifications: Iterable<
         [string, lc.GenericNotificationHandler]