[clangd] Render header of hover card as a heading

Reviewers: sammccall

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D72625

1 files changed, 19 insertions, 0 deletions

diff --git a/clang-tools-extra/clangd/FormattedString.cpp b/clang-tools-extra/clangd/FormattedString.cpp
index 1e61b8b5fb1..881c34e0071 100644
--- a/clang-tools-extra/clangd/FormattedString.cpp
+++ b/clang-tools-extra/clangd/FormattedString.cpp
@@ -164,6 +164,19 @@ std::string indentLines(llvm::StringRef Input) {
   }
   return IndentedR;
 }
+
+class Heading : public Paragraph {
+public:
+  Heading(size_t Level) : Level(Level) {}
+  void renderMarkdown(llvm::raw_ostream &OS) const override {
+    OS << std::string(Level, '#') << ' ';
+    Paragraph::renderMarkdown(OS);
+  }
+
+private:
+  size_t Level;
+};
+
 } // namespace
 
 std::string Block::asMarkdown() const {
@@ -278,6 +291,12 @@ BulletList &Document::addBulletList() {
   Children.emplace_back(std::make_unique<BulletList>());
   return *static_cast<BulletList *>(Children.back().get());
 }
+
+Paragraph &Document::addHeading(size_t Level) {
+  assert(Level > 0);
+  Children.emplace_back(std::make_unique<Heading>(Level));
+  return *static_cast<Paragraph *>(Children.back().get());
+}
 } // namespace markup
 } // namespace clangd
 } // namespace clang