[clangd] Add an option in the code to not display number of fixes

Summary:
Only to the APIs, which are used by our embedders.
We do not plan to add a user-facing option for this.

Reviewers: sammccall, ioeric

Reviewed By: sammccall

Subscribers: MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58387

llvm-svn: 354349

clang-tools-extra/clangd/Diagnostics.cpp

@@ -161,11 +161,11 @@ std::string capitalize(std::string Message) {
 ///
 ///     dir1/dir2/dir3/../../dir4/header.h:12:23
 ///     note: candidate function not viable: requires 3 arguments
-std::string mainMessage(const Diag &D) {
+std::string mainMessage(const Diag &D, bool DisplayFixesCount) {
   std::string Result;
   llvm::raw_string_ostream OS(Result);
   OS << D.Message;
-  if (!D.Fixes.empty())
+  if (DisplayFixesCount && !D.Fixes.empty())
     OS << " (" << (D.Fixes.size() > 1 ? "fixes" : "fix") << " available)";
   for (auto &Note : D.Notes) {
     OS << "\n\n";
@@ -252,7 +252,7 @@ void toLSPDiags(
 
   {
     clangd::Diagnostic Main = FillBasicFields(D);
-    Main.message = mainMessage(D);
+    Main.message = mainMessage(D, Opts.DisplayFixesCount);
     if (Opts.EmbedFixesInDiagnostics) {
       Main.codeActions.emplace();
       for (const auto &Fix : D.Fixes)

clang-tools-extra/clangd/Diagnostics.h

@@ -32,6 +32,10 @@ struct ClangdDiagnosticOptions {
   /// stage during which the issue was produced, e.g. "Semantic Issue" or "Parse
   /// Issue".
   bool SendDiagnosticCategory = false;
+
+  /// If true, Clangd will add a number of available fixes to the diagnostic's
+  /// message.
+  bool DisplayFixesCount = true;
 };
 
 /// Contains basic information about a diagnostic.