From 087af54069d34eef5197e04d64ac322d9ee98085 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Tue, 31 Dec 2019 18:14:00 +0100
Subject: Refactor server lifecycle

---
 editors/code/src/commands/analyzer_status.ts |  5 +++--
 editors/code/src/commands/expand_macro.ts    |  5 +++--
 editors/code/src/commands/index.ts           | 25 ++++++++++++++++++-------
 editors/code/src/commands/join_lines.ts      |  7 ++++---
 4 files changed, 28 insertions(+), 14 deletions(-)

(limited to 'editors/code/src/commands')

diff --git a/editors/code/src/commands/analyzer_status.ts b/editors/code/src/commands/analyzer_status.ts
index 2c8362286..cf37dc6f0 100644
--- a/editors/code/src/commands/analyzer_status.ts
+++ b/editors/code/src/commands/analyzer_status.ts
@@ -49,9 +49,10 @@ class TextDocumentContentProvider
         _uri: vscode.Uri,
     ): vscode.ProviderResult<string> {
         const editor = vscode.window.activeTextEditor;
-        if (editor == null) return '';
+        const client = this.ctx.client
+        if (!editor || !client) return '';
 
-        return this.ctx.client.sendRequest<string>(
+        return client.sendRequest<string>(
             'rust-analyzer/analyzerStatus',
             null,
         );
diff --git a/editors/code/src/commands/expand_macro.ts b/editors/code/src/commands/expand_macro.ts
index da208257a..472f43b8d 100644
--- a/editors/code/src/commands/expand_macro.ts
+++ b/editors/code/src/commands/expand_macro.ts
@@ -52,14 +52,15 @@ class TextDocumentContentProvider
 
     async provideTextDocumentContent(_uri: vscode.Uri): Promise<string> {
         const editor = vscode.window.activeTextEditor;
-        if (editor == null) return '';
+        const client = this.ctx.client
+        if (!editor || !client) return '';
 
         const position = editor.selection.active;
         const request: lc.TextDocumentPositionParams = {
             textDocument: { uri: editor.document.uri.toString() },
             position,
         };
-        const expanded = await this.ctx.client.sendRequest<ExpandedMacro>(
+        const expanded = await client.sendRequest<ExpandedMacro>(
             'rust-analyzer/expandMacro',
             request,
         );
diff --git a/editors/code/src/commands/index.ts b/editors/code/src/commands/index.ts
index c28709c8a..4431fdcf6 100644
--- a/editors/code/src/commands/index.ts
+++ b/editors/code/src/commands/index.ts
@@ -15,18 +15,21 @@ import { run, runSingle } from './runnables';
 
 function collectGarbage(ctx: Ctx): Cmd {
     return async () => {
-        ctx.client.sendRequest<null>('rust-analyzer/collectGarbage', null);
+        ctx.client?.sendRequest<null>('rust-analyzer/collectGarbage', null);
     };
 }
 
 function showReferences(ctx: Ctx): Cmd {
     return (uri: string, position: lc.Position, locations: lc.Location[]) => {
-        vscode.commands.executeCommand(
-            'editor.action.showReferences',
-            vscode.Uri.parse(uri),
-            ctx.client.protocol2CodeConverter.asPosition(position),
-            locations.map(ctx.client.protocol2CodeConverter.asLocation),
-        );
+        let client = ctx.client;
+        if (client) {
+            vscode.commands.executeCommand(
+                'editor.action.showReferences',
+                vscode.Uri.parse(uri),
+                client.protocol2CodeConverter.asPosition(position),
+                locations.map(client.protocol2CodeConverter.asLocation),
+            );
+        }
     };
 }
 
@@ -36,6 +39,13 @@ function applySourceChange(ctx: Ctx): Cmd {
     }
 }
 
+function reload(ctx: Ctx): Cmd {
+    return async () => {
+        vscode.window.showInformationMessage('Reloading rust-analyzer...');
+        await ctx.restartServer();
+    }
+}
+
 export {
     analyzerStatus,
     expandMacro,
@@ -49,4 +59,5 @@ export {
     runSingle,
     showReferences,
     applySourceChange,
+    reload
 };
diff --git a/editors/code/src/commands/join_lines.ts b/editors/code/src/commands/join_lines.ts
index f4f902cf9..7b08c3255 100644
--- a/editors/code/src/commands/join_lines.ts
+++ b/editors/code/src/commands/join_lines.ts
@@ -6,13 +6,14 @@ import { applySourceChange, SourceChange } from '../source_change';
 export function joinLines(ctx: Ctx): Cmd {
     return async () => {
         const editor = ctx.activeRustEditor;
-        if (!editor) return;
+        const client = ctx.client;
+        if (!editor || !client) return;
 
         const request: JoinLinesParams = {
-            range: ctx.client.code2ProtocolConverter.asRange(editor.selection),
+            range: client.code2ProtocolConverter.asRange(editor.selection),
             textDocument: { uri: editor.document.uri.toString() },
         };
-        const change = await ctx.client.sendRequest<SourceChange>(
+        const change = await client.sendRequest<SourceChange>(
             'rust-analyzer/joinLines',
             request,
         );
-- 
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