[clang-tools-extra] feat: highlight for import, export keyword of CXX Module (PR #204511)

[via cfe-commits]

https://github.com/Decodetalkers updated https://github.com/llvm/llvm-project/pull/204511

>From eb262bc8f3ca3918ca255f1e98c0cd1cb8c836d8 Mon Sep 17 00:00:00 2001
From: ShootingStarDragons <ShootingStarDragons at protonmail.com>
Date: Thu, 18 Jun 2026 18:08:05 +0900
Subject: [PATCH] feat: highlight for import, export keyword This pr aims to
 add highlight for import and export keyword And induced new SemanticHighlight
 `keyword`

---
 .../clangd/SemanticHighlighting.cpp              | 16 ++++++++++++++++
 clang-tools-extra/clangd/SemanticHighlighting.h  |  1 +
 2 files changed, 17 insertions(+)

diff --git a/clang-tools-extra/clangd/SemanticHighlighting.cpp b/clang-tools-extra/clangd/SemanticHighlighting.cpp
index 856904bc810d1..2f8f39818d24f 100644
--- a/clang-tools-extra/clangd/SemanticHighlighting.cpp
+++ b/clang-tools-extra/clangd/SemanticHighlighting.cpp
@@ -582,6 +582,18 @@ class CollectExtraHighlightings
     return true;
   }
 
+  bool VisitImportDecl(const ImportDecl *D) {
+    H.addToken(D->getLocation(), HighlightingKind::Keyword);
+    for (const auto ModuleLoc: D->getIdentifierLocs()) {
+        H.addToken(ModuleLoc, HighlightingKind::Namespace);
+    }
+    return true;
+  }
+  bool VisitExportDecl(const ExportDecl *D) {
+    H.addToken(D->getLocation(), HighlightingKind::Keyword);
+    return true;
+  }
+
   bool VisitTagDecl(TagDecl *D) {
     for (TemplateParameterList *TPL : D->getTemplateParameterLists())
       H.addAngleBracketTokens(TPL->getLAngleLoc(), TPL->getRAngleLoc());
@@ -1120,6 +1132,8 @@ llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, HighlightingKind K) {
     return OS << "Function";
   case HighlightingKind::Method:
     return OS << "Method";
+  case HighlightingKind::Keyword:
+    return OS << "Keyword";
   case HighlightingKind::StaticMethod:
     return OS << "StaticMethod";
   case HighlightingKind::Field:
@@ -1323,6 +1337,8 @@ llvm::StringRef toSemanticTokenType(HighlightingKind Kind) {
     return "function";
   case HighlightingKind::Method:
     return "method";
+  case HighlightingKind::Keyword:
+    return "keyword";
   case HighlightingKind::StaticMethod:
     // FIXME: better method with static modifier?
     return "function";
diff --git a/clang-tools-extra/clangd/SemanticHighlighting.h b/clang-tools-extra/clangd/SemanticHighlighting.h
index 59d742b83ee52..3b1c12418becb 100644
--- a/clang-tools-extra/clangd/SemanticHighlighting.h
+++ b/clang-tools-extra/clangd/SemanticHighlighting.h
@@ -34,6 +34,7 @@ enum class HighlightingKind {
   Parameter,
   Function,
   Method,
+  Keyword,
   StaticMethod,
   Field,
   StaticField,