Fix LSP requests with no arguments

Author: lnicola

editors/code/src/commands.ts

@@ -21,7 +21,7 @@ export function analyzerStatus(ctx: Ctx): Cmd {
         provideTextDocumentContent(_uri: vscode.Uri): vscode.ProviderResult<string> {
             if (!vscode.window.activeTextEditor) return '';
 
-            return ctx.client.sendRequest(ra.analyzerStatus, null);
+            return ctx.client.sendRequest(ra.analyzerStatus);
         }
 
         get onDidChange(): vscode.Event<vscode.Uri> {
@@ -63,7 +63,7 @@ export function memoryUsage(ctx: Ctx): Cmd {
         provideTextDocumentContent(_uri: vscode.Uri): vscode.ProviderResult<string> {
             if (!vscode.window.activeTextEditor) return '';
 
-            return ctx.client.sendRequest(ra.memoryUsage, null).then((mem: any) => {
+            return ctx.client.sendRequest(ra.memoryUsage).then((mem: any) => {
                 return 'Per-query memory usage:\n' + mem + '\n(note: database has been cleared)';
             });
         }
@@ -372,7 +372,7 @@ export function expandMacro(ctx: Ctx): Cmd {
 }
 
 export function reloadWorkspace(ctx: Ctx): Cmd {
-    return async () => ctx.client.sendRequest(ra.reloadWorkspace, null);
+    return async () => ctx.client.sendRequest(ra.reloadWorkspace);
 }
 
 export function showReferences(ctx: Ctx): Cmd {

editors/code/src/lsp_ext.ts

@@ -4,16 +4,16 @@
 
 import * as lc from "vscode-languageclient";
 
-export const analyzerStatus = new lc.RequestType<null, string, void>("rust-analyzer/analyzerStatus");
-export const memoryUsage = new lc.RequestType<null, string, void>("rust-analyzer/memoryUsage");
+export const analyzerStatus = new lc.RequestType0<string, void>("rust-analyzer/analyzerStatus");
+export const memoryUsage = new lc.RequestType0<string, void>("rust-analyzer/memoryUsage");
 
 export type Status = "loading" | "ready" | "invalid" | "needsReload";
 export interface StatusParams {
     status: Status;
 }
 export const status = new lc.NotificationType<StatusParams>("rust-analyzer/status");
 
-export const reloadWorkspace = new lc.RequestType<null, null, void>("rust-analyzer/reloadWorkspace");
+export const reloadWorkspace = new lc.RequestType0<null, void>("rust-analyzer/reloadWorkspace");
 
 export interface SyntaxTreeParams {
     textDocument: lc.TextDocumentIdentifier;