[PATCH] D91123: [clangd] Call hierarchy (ClangdServer layer)

[Nathan Ridge via Phabricator via cfe-commits]

nridge created this revision.
nridge added a reviewer: kadircet.
Herald added subscribers: cfe-commits, usaxena95, arphaman.
Herald added a project: clang.
nridge requested review of this revision.
Herald added subscribers: MaskRay, ilya-biryukov.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D91123

Files:
  clang-tools-extra/clangd/ClangdServer.cpp
  clang-tools-extra/clangd/ClangdServer.h


Index: clang-tools-extra/clangd/ClangdServer.h
===================================================================
--- clang-tools-extra/clangd/ClangdServer.h
+++ clang-tools-extra/clangd/ClangdServer.h
@@ -242,6 +242,21 @@
                             TypeHierarchyDirection Direction,
                             Callback<llvm::Optional<TypeHierarchyItem>> CB);
 
+  /// Get information about call hierarchy for a given position.
+  void prepareCallHierarchy(
+      PathRef File, Position Pos,
+      Callback<llvm::Optional<std::vector<CallHierarchyItem>>> CB);
+
+  /// Resolve incoming calls for a given call hierarchy item.
+  void incomingCalls(
+      const CallHierarchyItem &Item,
+      Callback<llvm::Optional<std::vector<CallHierarchyIncomingCall>>>);
+
+  /// Resolve outgoing calls for a given call hierarchy item.
+  void outgoingCalls(
+      const CallHierarchyItem &Item,
+      Callback<llvm::Optional<std::vector<CallHierarchyOutgoingCall>>>);
+
   /// Retrieve the top symbols from the workspace matching a query.
   void workspaceSymbols(StringRef Query, int Limit,
                         Callback<std::vector<SymbolInformation>> CB);
Index: clang-tools-extra/clangd/ClangdServer.cpp
===================================================================
--- clang-tools-extra/clangd/ClangdServer.cpp
+++ clang-tools-extra/clangd/ClangdServer.cpp
@@ -677,6 +677,30 @@
   CB(Item);
 }
 
+void ClangdServer::prepareCallHierarchy(
+    PathRef File, Position Pos,
+    Callback<llvm::Optional<std::vector<CallHierarchyItem>>> CB) {
+  auto Action = [File = File.str(), Pos, CB = std::move(CB),
+                 this](Expected<InputsAndAST> InpAST) mutable {
+    if (!InpAST)
+      return CB(InpAST.takeError());
+    CB(clangd::prepareCallHierarchy(InpAST->AST, Pos, Index, File));
+  };
+  WorkScheduler.runWithAST("Call Hierarchy", File, std::move(Action));
+}
+
+void ClangdServer::incomingCalls(
+    const CallHierarchyItem &Item,
+    Callback<llvm::Optional<std::vector<CallHierarchyIncomingCall>>> CB) {
+  CB(clangd::incomingCalls(Item, Index));
+}
+
+void ClangdServer::outgoingCalls(
+    const CallHierarchyItem &Item,
+    Callback<llvm::Optional<std::vector<CallHierarchyOutgoingCall>>> CB) {
+  CB(clangd::outgoingCalls(Item, Index));
+}
+
 void ClangdServer::onFileEvent(const DidChangeWatchedFilesParams &Params) {
   // FIXME: Do nothing for now. This will be used for indexing and potentially
   // invalidating other caches.


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