add hw2

node_modules/langium/lib/grammar/lsp/grammar-call-hierarchy.d.ts

@@ -0,0 +1,15 @@
+/******************************************************************************
+ * Copyright 2021 TypeFox GmbH
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License, which is available in the project root.
+ ******************************************************************************/
+import type { CallHierarchyIncomingCall, CallHierarchyOutgoingCall } from 'vscode-languageserver';
+import type { AstNode } from '../../syntax-tree.js';
+import type { Stream } from '../../utils/stream.js';
+import type { ReferenceDescription } from '../../workspace/ast-descriptions.js';
+import { AbstractCallHierarchyProvider } from '../../lsp/call-hierarchy-provider.js';
+export declare class LangiumGrammarCallHierarchyProvider extends AbstractCallHierarchyProvider {
+    protected getIncomingCalls(node: AstNode, references: Stream<ReferenceDescription>): CallHierarchyIncomingCall[] | undefined;
+    protected getOutgoingCalls(node: AstNode): CallHierarchyOutgoingCall[] | undefined;
+}
+//# sourceMappingURL=grammar-call-hierarchy.d.ts.map