[clangd] Add type boosting in code completion

Reviewers: sammccall, ioeric

Reviewed By: sammccall

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

Differential Revision: https://reviews.llvm.org/D52276

llvm-svn: 347562

1 files changed, 7 insertions, 0 deletions

diff --git a/clang-tools-extra/clangd/Quality.cpp b/clang-tools-extra/clangd/Quality.cpp
index 640f543275d..cb1f64adabc 100644
--- a/clang-tools-extra/clangd/Quality.cpp
+++ b/clang-tools-extra/clangd/Quality.cpp
@@ -369,6 +369,9 @@ float SymbolRelevanceSignals::evaluate() const {
     }
   }
 
+  if (TypeMatchesPreferred)
+    Score *= 5.0;
+
   // Penalize non-instance members when they are accessed via a class instance.
   if (!IsInstanceMember &&
       (Context == CodeCompletionContext::CCC_DotMemberAccess ||
@@ -412,6 +415,10 @@ raw_ostream &operator<<(raw_ostream &OS, const SymbolRelevanceSignals &S) {
     OS << formatv("\tIndex scope boost: {0}\n",
                   scopeBoost(*S.ScopeProximityMatch, S.SymbolScope));
 
+  OS << formatv(
+      "\tType matched preferred: {0} (Context type: {1}, Symbol type: {2}\n",
+      S.TypeMatchesPreferred, S.HadContextType, S.HadSymbolType);
+
   return OS;
 }