Merge pull request #167 from atom-community/code-actions-rust

Author: aminya

lib/adapters/code-action-adapter.ts

@@ -41,27 +41,33 @@ export default class CodeActionAdapter {
     linterAdapter: LinterPushV2Adapter | IdeDiagnosticAdapter | undefined,
     editor: TextEditor,
     range: Range,
-    linterMessages: linter.Message[] | atomIde.Diagnostic[]
+    linterMessages: linter.Message[] | atomIde.Diagnostic[],
+    filterActions: (actions: (Command | CodeAction)[] | null) => (Command | CodeAction)[] | null = (actions) => actions,
+    onApply: (action: Command | CodeAction) => Promise<boolean> = () => Promise.resolve(true)
   ): Promise<atomIde.CodeAction[]> {
     if (linterAdapter == null) {
       return []
     }
     assert(serverCapabilities.codeActionProvider, "Must have the textDocument/codeAction capability")
 
     const params = createCodeActionParams(linterAdapter, editor, range, linterMessages)
-    const actions = await connection.codeAction(params)
+    const actions = filterActions(await connection.codeAction(params))
     if (actions === null) {
       return []
     }
-    return actions.map((action) => CodeActionAdapter.createCodeAction(action, connection))
+    return actions.map((action) => CodeActionAdapter.createCodeAction(action, connection, onApply))
   }
 
   private static createCodeAction(
     action: Command | CodeAction,
-    connection: LanguageClientConnection
+    connection: LanguageClientConnection,
+    onApply: (action: Command | CodeAction) => Promise<boolean>
   ): atomIde.CodeAction {
     return {
       async apply() {
+        if ((await onApply(action)) === false) {
+          return
+        }
         if (CodeAction.is(action)) {
           CodeActionAdapter.applyWorkspaceEdit(action.edit)
           await CodeActionAdapter.executeCommand(action.command, connection)

lib/auto-languageclient.ts

@@ -219,6 +219,11 @@ export default class AutoLanguageClient {
           },
           codeAction: {
             dynamicRegistration: false,
+            codeActionLiteralSupport: {
+              codeActionKind: {
+                valueSet: [""], // TODO explicitly support more?
+              },
+            },
           },
           codeLens: {
             dynamicRegistration: false,
@@ -939,10 +944,25 @@ export default class AutoLanguageClient {
       this.getServerAdapter(server, "linterPushV2"),
       editor,
       range,
-      diagnostics
+      diagnostics,
+      this.filterCodeActions.bind(this),
+      this.onApplyCodeActions.bind(this)
     )
   }
 
+  /** Optionally filter code action before they're displayed */
+  protected filterCodeActions(actions: (ls.Command | ls.CodeAction)[] | null): (ls.Command | ls.CodeAction)[] | null {
+    return actions
+  }
+
+  /**
+   * Optionally handle a code action before default handling. Return `false` to prevent default handling, `true` to
+   * continue with default handling.
+   */
+  protected async onApplyCodeActions(_action: ls.Command | ls.CodeAction): Promise<boolean> {
+    return true
+  }
+
   public provideRefactor(): atomIde.RefactorProvider {
     return {
       grammarScopes: this.getGrammarScopes(),