Add option to disable all-targets.

Can be useful in embedded.

editors/code/package.json

@@ -237,6 +237,11 @@
                     "description": "A list of patterns for cargo-watch to ignore (will be passed as `--ignore`)",
                     "default": []
                 },
+                "rust-analyzer.cargo-watch.allTargets": {
+                    "type": "boolean",
+                    "description": "Check all targets and tests (will be passed as `--all-targets`)",
+                    "default": true
+                },
                 "rust-analyzer.trace.server": {
                     "type": "string",
                     "scope": "window",

editors/code/src/commands/cargo_watch.ts

@@ -83,7 +83,10 @@ export class CargoWatchProvider implements vscode.Disposable {
 
         let args =
             Server.config.cargoWatchOptions.command +
-            ' --all-targets --message-format json';
+            ' --message-format json';
+        if (Server.config.cargoWatchOptions.allTargets) {
+            args += ' --all-targets';
+        }
         if (Server.config.cargoWatchOptions.command.length > 0) {
             // Excape the double quote string:
             args += ' ' + Server.config.cargoWatchOptions.arguments;

editors/code/src/config.ts

@@ -13,6 +13,7 @@ export interface CargoWatchOptions {
     command: string;
     trace: CargoWatchTraceOptions;
     ignore: string[];
+    allTargets: boolean;
 }
 
 export interface CargoFeatures {
@@ -40,6 +41,7 @@ export class Config {
         arguments: '',
         command: '',
         ignore: [],
+        allTargets: true,
     };
     public cargoFeatures: CargoFeatures = {
         noDefaultFeatures: false,
@@ -132,6 +134,13 @@ export class Config {
             );
         }
 
+        if (config.has('cargo-watch.allTargets')) {
+            this.cargoWatchOptions.allTargets = config.get<boolean>(
+                'cargo-watch.allTargets',
+                true,
+            );
+        }
+
         if (config.has('lruCapacity')) {
             this.lruCapacity = config.get('lruCapacity') as number;
         }