diff --git a/Doxyfile b/Doxyfile
index 44c60dc..a7c1fe6 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -396,7 +396,7 @@ ENABLE_PREPROCESSING   = YES
 MACRO_EXPANSION        = NO
 EXPAND_ONLY_PREDEF     = NO
 SEARCH_INCLUDES        = YES
-INCLUDE_PATH           =
+INCLUDE_PATH           = 
 INCLUDE_FILE_PATTERNS  = *.h
 PREDEFINED             =
 EXPAND_AS_DEFINED      =
diff --git a/src/polyglat-c/annotation-emitter.h b/src/polyglat-c/annotation-emitter.h
index 4df267e..f9ab5e0 100644
--- a/src/polyglat-c/annotation-emitter.h
+++ b/src/polyglat-c/annotation-emitter.h
@@ -3,31 +3,44 @@
 #include <clang/AST/RecursiveASTVisitor.h>
 
 namespace polyglat::c {
-
+    /**
+     * @brief A recursive-ast-visitor that emits annotations to symbols
+     * to preserve object-oriented things over low-level environment (LLVM).
+     */
     class AnnotationEmitter final : public clang::RecursiveASTVisitor<AnnotationEmitter> {
         clang::Sema *Sema;
 
         static auto ShouldBeAnnotated(const clang::NamedDecl *decl) -> bool;
 
       public:
+        /**
+         * @brief Creates new instance with specified semantic context.
+         * @param sema A semantic context to use.
+         */
         explicit AnnotationEmitter(clang::Sema *sema) : Sema(sema) {}
 
+        /**
+         * @brief Tries to annotate declaration of record.
+         * @param decl A declaration to be annotated.
+         */
         auto VisitRecordDecl(clang::RecordDecl *decl) -> bool;
 
+        /**
+         * @brief Tries to annotate declaration of function.
+         * @param decl A declaration to be annotated.
+         */
         auto VisitFunctionDecl(clang::FunctionDecl *decl) -> bool;
     };
 
-    class ASTConsumer final : public clang::SemaConsumer {
-        clang::Sema *Sema = nullptr;
-
-      public:
-        void HandleTranslationUnit(clang::ASTContext &ctx) override;
-
-        void InitializeSema(clang::Sema &sema) override;
-    };
-
+    /**
+     * @brief A plugin-ast-action that emits annotations to result IR
+     * to preserve object-oriented things over low-level environment (LLVM).
+     */
     class AnnotationEmitAction final : public clang::PluginASTAction {
       public:
+        /**
+         * @brief Creates new instance.
+         */
         auto CreateASTConsumer(clang::CompilerInstance &ci, llvm::StringRef inFile) -> std::unique_ptr<clang::ASTConsumer> override;
 
         auto ParseArgs(const clang::CompilerInstance &ci, const std::vector<std::string> &arg) -> bool override;
diff --git a/src/polyglat-c/src/annotation-emitter.cxx b/src/polyglat-c/src/annotation-emitter.cxx
index 586d73c..cc622c6 100644
--- a/src/polyglat-c/src/annotation-emitter.cxx
+++ b/src/polyglat-c/src/annotation-emitter.cxx
@@ -59,14 +59,19 @@ auto polyglat::c::AnnotationEmitter::VisitFunctionDecl(clang::FunctionDecl *decl
     return true;
 }
 
-void polyglat::c::ASTConsumer::HandleTranslationUnit(clang::ASTContext &Ctx) {
-    AnnotationEmitter emitter{Sema};
-    emitter.TraverseDecl(Ctx.getTranslationUnitDecl());
-}
+class ASTConsumer final : public clang::SemaConsumer {
+    clang::Sema *Sema = nullptr;
 
-void polyglat::c::ASTConsumer::InitializeSema(clang::Sema &S) {
-    Sema = &S;
-}
+public:
+    void HandleTranslationUnit(clang::ASTContext &ctx) override {
+        polyglat::c::AnnotationEmitter emitter{Sema};
+        emitter.TraverseDecl(ctx.getTranslationUnitDecl());
+    }
+
+    void InitializeSema(clang::Sema &sema) override {
+        Sema = &sema;
+    }
+};
 
 auto polyglat::c::AnnotationEmitAction::CreateASTConsumer(clang::CompilerInstance & /**/, llvm::StringRef /**/) -> std::unique_ptr<clang::ASTConsumer> {
     return std::make_unique<ASTConsumer>();