[clang-tools-extra] [clangd] [C++20] [Modules] Support code complete for C++20 modules (PR #110083)

[via cfe-commits]

github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

``````````bash
git-clang-format --diff 2b0a708f41dd6291ee744704d43febc975e3d026 e35e600159c99736de7d2bc735c738002f592988 --extensions h,cpp -- clang-tools-extra/clangd/CodeComplete.cpp clang-tools-extra/clangd/CodeComplete.h clang-tools-extra/clangd/unittests/PrerequisiteModulesTest.cpp
``````````

</details>

<details>
<summary>
View the diff from clang-format here.
</summary>

``````````diff
diff --git a/clang-tools-extra/clangd/CodeComplete.cpp b/clang-tools-extra/clangd/CodeComplete.cpp
index f6f0d9a1be..96851ff901 100644
--- a/clang-tools-extra/clangd/CodeComplete.cpp
+++ b/clang-tools-extra/clangd/CodeComplete.cpp
@@ -891,8 +891,7 @@ static bool isExcludedMember(const NamedDecl &D) {
 // Generally the fields and methods of this object should only be used from
 // within the callback.
 struct CompletionRecorder : public CodeCompleteConsumer {
-  CompletionRecorder(const CodeCompleteOptions &Opts,
-                     bool ForceLoadExternal,
+  CompletionRecorder(const CodeCompleteOptions &Opts, bool ForceLoadExternal,
                      llvm::unique_function<void()> ResultsCallback)
       : CodeCompleteConsumer(Opts.getClangCompleteOpts(ForceLoadExternal)),
         CCContext(CodeCompletionContext::CCC_Other), Opts(Opts),
@@ -1411,7 +1410,8 @@ bool semaCodeComplete(std::unique_ptr<CodeCompleteConsumer> Consumer,
   Clang->setCodeCompletionConsumer(Consumer.release());
 
   if (Input.Preamble.RequiredModules)
-    Input.Preamble.RequiredModules->adjustHeaderSearchOptions(Clang->getHeaderSearchOpts());
+    Input.Preamble.RequiredModules->adjustHeaderSearchOptions(
+        Clang->getHeaderSearchOpts());
 
   SyntaxOnlyAction Action;
   if (!Action.BeginSourceFile(*Clang, Clang->getFrontendOpts().Inputs[0])) {
@@ -1633,15 +1633,16 @@ public:
       SpecFuzzyFind->Result = startAsyncFuzzyFind(*Opts.Index, *SpecReq);
     }
 
-    // FIXME: If we're using C++20 modules, force the lookup process to load external decls,
-    // since currently the index doesn't support C++20 modules.
+    // FIXME: If we're using C++20 modules, force the lookup process to load
+    // external decls, since currently the index doesn't support C++20 modules.
     bool ForceLoadExternal = (bool)SemaCCInput.Preamble.RequiredModules;
 
     // We run Sema code completion first. It builds an AST and calculates:
     //   - completion results based on the AST.
     //   - partial identifier and context. We need these for the index query.
     CodeCompleteResult Output;
-    auto RecorderOwner = std::make_unique<CompletionRecorder>(Opts, ForceLoadExternal, [&]() {
+    auto RecorderOwner = std::make_unique<
+        CompletionRecorder>(Opts, ForceLoadExternal, [&]() {
       assert(Recorder && "Recorder is not set");
       CCContextKind = Recorder->CCContext.getKind();
       IsUsingDeclaration = Recorder->CCContext.isUsingDeclaration();
@@ -1699,8 +1700,9 @@ public:
 
     Recorder = RecorderOwner.get();
 
-    semaCodeComplete(std::move(RecorderOwner), Opts.getClangCompleteOpts(ForceLoadExternal),
-                     SemaCCInput, &Includes);
+    semaCodeComplete(std::move(RecorderOwner),
+                     Opts.getClangCompleteOpts(ForceLoadExternal), SemaCCInput,
+                     &Includes);
     logResults(Output, Tracer);
     return Output;
   }
@@ -2116,7 +2118,8 @@ private:
 
 } // namespace
 
-clang::CodeCompleteOptions CodeCompleteOptions::getClangCompleteOpts(bool ForceLoadExternal) const {
+clang::CodeCompleteOptions
+CodeCompleteOptions::getClangCompleteOpts(bool ForceLoadExternal) const {
   clang::CodeCompleteOptions Result;
   Result.IncludeCodePatterns = EnableSnippets;
   Result.IncludeMacros = true;
diff --git a/clang-tools-extra/clangd/unittests/PrerequisiteModulesTest.cpp b/clang-tools-extra/clangd/unittests/PrerequisiteModulesTest.cpp
index f1cdf9e899..d7f26f1020 100644
--- a/clang-tools-extra/clangd/unittests/PrerequisiteModulesTest.cpp
+++ b/clang-tools-extra/clangd/unittests/PrerequisiteModulesTest.cpp
@@ -435,7 +435,7 @@ void func() {
                     /*Callback=*/nullptr);
   EXPECT_TRUE(Preamble);
   EXPECT_TRUE(Preamble->RequiredModules);
-  
+
   auto Result = codeComplete(getFullPath("Use.cpp"), Test.point(),
                              Preamble.get(), Use, {});
   EXPECT_FALSE(Result.Completions.empty());

``````````

</details>


https://github.com/llvm/llvm-project/pull/110083