debug: Add helper functions for debugging (#134)

Author: varungandhi-src

indexer/DebugHelpers.cc

@@ -1,6 +1,7 @@
 #include "spdlog/fmt/fmt.h"
 
 #include "clang/AST/Decl.h"
+#include "clang/AST/Type.h"
 #include "clang/Basic/FileEntry.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Lex/PPCallbacks.h"
@@ -157,5 +158,33 @@ std::string formatDecl(const clang::Decl *decl) {
   return buf;
 }
 
+std::string formatTemplateNameKind(const clang::TemplateName::NameKind kind) {
+#define HANDLE_KIND(kind_)                   \
+  case clang::TemplateName::NameKind::kind_: \
+    return #kind_;
+  switch (kind) {
+    HANDLE_KIND(Template)
+    HANDLE_KIND(OverloadedTemplate)
+    HANDLE_KIND(AssumedTemplate)
+    HANDLE_KIND(QualifiedTemplate)
+    HANDLE_KIND(DependentTemplate)
+    HANDLE_KIND(SubstTemplateTemplateParm)
+    HANDLE_KIND(SubstTemplateTemplateParmPack)
+    HANDLE_KIND(UsingTemplate)
+  }
+#undef HANDLE_KIND
+}
+
+std::string formatTypeInternals(const clang::QualType &qualType,
+                                const clang::ASTContext &astContext) {
+  if (qualType.isNull()) {
+    return "<null>";
+  }
+  std::string buf;
+  llvm::raw_string_ostream os(buf);
+  qualType.dump(os, astContext);
+  return buf;
+}
+
 } // namespace debug
 } // namespace scip_clang

indexer/DebugHelpers.h

@@ -3,14 +3,17 @@
 
 #include <string>
 
+#include "clang/AST/TemplateName.h"
 #include "clang/Basic/FileEntry.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Lex/PPCallbacks.h"
 #include "llvm/ADT/StringRef.h"
 
 namespace clang {
+class ASTContext;
 class Decl;
-}
+class QualType;
+} // namespace clang
 
 namespace scip_clang {
 namespace debug {
@@ -31,6 +34,11 @@ std::string formatRange(const clang::SourceManager &,
 
 std::string formatDecl(const clang::Decl *);
 
+std::string formatTemplateNameKind(clang::TemplateName::NameKind);
+
+std::string formatTypeInternals(const clang::QualType &,
+                                const clang::ASTContext &);
+
 } // namespace debug
 } // namespace scip_clang