Refactored comment parsing to clang comments

src/class_diagram/visitor/translation_unit_visitor.cc

@@ -66,7 +66,7 @@ access_t access_specifier_to_access_t(clang::AccessSpecifier access_specifier)
 translation_unit_visitor::translation_unit_visitor(clang::SourceManager &sm,
     clanguml::class_diagram::model::diagram &diagram,
     const clanguml::config::class_diagram &config)
-    : source_manager_{sm}
+    : common::visitor::translation_unit_visitor{sm, config}
     , diagram_{diagram}
     , config_{config}
 {
@@ -81,7 +81,7 @@ bool translation_unit_visitor::VisitNamespaceDecl(clang::NamespaceDecl *ns)
 
     LOG_DBG("= Visiting namespace declaration {} at {}",
         ns->getQualifiedNameAsString(),
-        ns->getLocation().printToString(source_manager_));
+        ns->getLocation().printToString(source_manager()));
 
     auto package_path = namespace_{common::get_qualified_name(*ns)};
     auto package_parent = package_path;
@@ -138,7 +138,7 @@ bool translation_unit_visitor::VisitEnumDecl(clang::EnumDecl *enm)
 
     LOG_DBG("= Visiting enum declaration {} at {}",
         enm->getQualifiedNameAsString(),
-        enm->getLocation().printToString(source_manager_));
+        enm->getLocation().printToString(source_manager()));
 
     auto e_ptr = std::make_unique<enum_>(config_.using_namespace());
     auto &e = *e_ptr;
@@ -217,7 +217,7 @@ bool translation_unit_visitor::VisitEnumDecl(clang::EnumDecl *enm)
 bool translation_unit_visitor::VisitClassTemplateSpecializationDecl(
     clang::ClassTemplateSpecializationDecl *cls)
 {
-    if (source_manager_.isInSystemHeader(cls->getSourceRange().getBegin()))
+    if (source_manager().isInSystemHeader(cls->getSourceRange().getBegin()))
         return true;
 
     if (!diagram().should_include(cls->getQualifiedNameAsString()))
@@ -225,7 +225,7 @@ bool translation_unit_visitor::VisitClassTemplateSpecializationDecl(
 
     LOG_DBG("= Visiting template specialization declaration {} at {}",
         cls->getQualifiedNameAsString(),
-        cls->getLocation().printToString(source_manager_));
+        cls->getLocation().printToString(source_manager()));
 
     // TODO: Add support for classes defined in function/method bodies
     if (cls->isLocalClass())
@@ -264,7 +264,7 @@ bool translation_unit_visitor::VisitClassTemplateSpecializationDecl(
 bool translation_unit_visitor::VisitTypeAliasTemplateDecl(
     clang::TypeAliasTemplateDecl *cls)
 {
-    if (source_manager_.isInSystemHeader(cls->getSourceRange().getBegin()))
+    if (source_manager().isInSystemHeader(cls->getSourceRange().getBegin()))
         return true;
 
     if (!diagram().should_include(cls->getQualifiedNameAsString()))
@@ -272,7 +272,7 @@ bool translation_unit_visitor::VisitTypeAliasTemplateDecl(
 
     LOG_DBG("= Visiting template type alias declaration {} at {}",
         cls->getQualifiedNameAsString(),
-        cls->getLocation().printToString(source_manager_));
+        cls->getLocation().printToString(source_manager()));
 
     auto *template_type_specialization_ptr =
         cls->getTemplatedDecl()
@@ -303,7 +303,7 @@ bool translation_unit_visitor::VisitTypeAliasTemplateDecl(
 bool translation_unit_visitor::VisitClassTemplateDecl(
     clang::ClassTemplateDecl *cls)
 {
-    if (source_manager_.isInSystemHeader(cls->getSourceRange().getBegin()))
+    if (source_manager().isInSystemHeader(cls->getSourceRange().getBegin()))
         return true;
 
     if (!diagram().should_include(cls->getQualifiedNameAsString()))
@@ -311,7 +311,7 @@ bool translation_unit_visitor::VisitClassTemplateDecl(
 
     LOG_DBG("= Visiting class template declaration {} at {}",
         cls->getQualifiedNameAsString(),
-        cls->getLocation().printToString(source_manager_));
+        cls->getLocation().printToString(source_manager()));
 
     auto c_ptr = create_class_declaration(cls->getTemplatedDecl());
 
@@ -352,7 +352,7 @@ bool translation_unit_visitor::VisitClassTemplateDecl(
 bool translation_unit_visitor::VisitCXXRecordDecl(clang::CXXRecordDecl *cls)
 {
     // Skip system headers
-    if (source_manager_.isInSystemHeader(cls->getSourceRange().getBegin()))
+    if (source_manager().isInSystemHeader(cls->getSourceRange().getBegin()))
         return true;
 
     if (!diagram().should_include(cls->getQualifiedNameAsString()))
@@ -360,7 +360,7 @@ bool translation_unit_visitor::VisitCXXRecordDecl(clang::CXXRecordDecl *cls)
 
     LOG_DBG("= Visiting class declaration {} at {}",
         cls->getQualifiedNameAsString(),
-        cls->getLocation().printToString(source_manager_));
+        cls->getLocation().printToString(source_manager()));
 
     LOG_DBG(
         "== getQualifiedNameAsString() = {}", cls->getQualifiedNameAsString());
@@ -1004,7 +1004,7 @@ void translation_unit_visitor::process_function_parameter(
         const auto *default_arg = p.getDefaultArg();
         if (default_arg != nullptr) {
             auto default_arg_str = common::get_source_text(
-                default_arg->getSourceRange(), source_manager_);
+                default_arg->getSourceRange(), source_manager());
             parameter.set_default_value(default_arg_str);
         }
     }
@@ -1241,7 +1241,7 @@ void translation_unit_visitor::process_template_specialization_argument(
             // them from raw source code...
             if (type_name.find("type-parameter-") == 0) {
                 auto declaration_text = common::get_source_text_raw(
-                    cls->getSourceRange(), source_manager_);
+                    cls->getSourceRange(), source_manager());
 
                 declaration_text = declaration_text.substr(
                     declaration_text.find(cls->getNameAsString()) +
@@ -1282,7 +1282,7 @@ void translation_unit_visitor::process_template_specialization_argument(
             }
             else if (type_name.find("type-parameter-") == 0) {
                 auto declaration_text = common::get_source_text_raw(
-                    cls->getSourceRange(), source_manager_);
+                    cls->getSourceRange(), source_manager());
 
                 declaration_text = declaration_text.substr(
                     declaration_text.find(cls->getNameAsString()) +
@@ -1327,14 +1327,14 @@ void translation_unit_visitor::process_template_specialization_argument(
         template_parameter argument;
         argument.is_template_parameter(false);
         argument.set_type(common::get_source_text(
-            arg.getAsExpr()->getSourceRange(), source_manager_));
+            arg.getAsExpr()->getSourceRange(), source_manager()));
         template_instantiation.add_template(std::move(argument));
     }
     else if (argument_kind == clang::TemplateArgument::TemplateExpansion) {
         template_parameter argument;
         argument.is_template_parameter(true);
 
-        cls->getLocation().dump(source_manager_);
+        cls->getLocation().dump(source_manager());
     }
     else if (argument_kind == clang::TemplateArgument::Pack) {
         // This will only work for now if pack is at the end
@@ -1347,7 +1347,7 @@ void translation_unit_visitor::process_template_specialization_argument(
     }
     else {
         LOG_ERROR("Unsupported template argument kind {} [{}]", arg.getKind(),
-            cls->getLocation().printToString(source_manager_));
+            cls->getLocation().printToString(source_manager()));
     }
 }
 
@@ -1888,7 +1888,7 @@ void translation_unit_visitor::
 
     argument.is_template_parameter(false);
     argument.set_type(common::get_source_text(
-        arg.getAsExpr()->getSourceRange(), source_manager_));
+        arg.getAsExpr()->getSourceRange(), source_manager()));
 }
 
 void translation_unit_visitor::
@@ -2128,16 +2128,6 @@ void translation_unit_visitor::process_field(
     c.add_member(std::move(field));
 }
 
-void translation_unit_visitor::set_source_location(
-    const clang::Decl &decl, clanguml::common::model::source_location &element)
-{
-    if (decl.getLocation().isValid()) {
-        element.set_file(source_manager_.getFilename(decl.getLocation()).str());
-        element.set_line(
-            source_manager_.getSpellingLineNumber(decl.getLocation()));
-    }
-}
-
 void translation_unit_visitor::add_incomplete_forward_declarations()
 {
     for (auto &[id, c] : forward_declarations_) {

src/class_diagram/visitor/translation_unit_visitor.h

@@ -20,6 +20,7 @@
 #include "class_diagram/model/class.h"
 #include "class_diagram/model/diagram.h"
 #include "common/model/enums.h"
+#include "common/visitor/translation_unit_visitor.h"
 #include "config/config.h"
 
 #include <clang/AST/RecursiveASTVisitor.h>
@@ -38,7 +39,8 @@ using found_relationships_t =
         common::model::relationship_t>>;
 
 class translation_unit_visitor
-    : public clang::RecursiveASTVisitor<translation_unit_visitor> {
+    : public clang::RecursiveASTVisitor<translation_unit_visitor>,
+      public common::visitor::translation_unit_visitor {
 public:
     explicit translation_unit_visitor(clang::SourceManager &sm,
         clanguml::class_diagram::model::diagram &diagram,
@@ -130,9 +132,6 @@ private:
         const found_relationships_t &relationships,
         bool break_on_first_aggregation = false);
 
-    void set_source_location(const clang::Decl &decl,
-        clanguml::common::model::source_location &element);
-
     std::unique_ptr<clanguml::class_diagram::model::class_>
     build_template_instantiation(
         const clang::TemplateSpecializationType &template_type,
@@ -199,20 +198,6 @@ private:
         const clanguml::class_diagram::model::template_parameter &ct,
         found_relationships_t &relationships);
 
-    template <typename ClangDecl>
-    void process_comment(
-        const ClangDecl &decl, clanguml::common::model::decorated_element &e)
-    {
-        const auto *comment =
-            decl.getASTContext().getRawCommentForDeclNoCache(&decl);
-
-        if (comment != nullptr) {
-            e.set_comment(comment->getFormattedText(
-                source_manager_, decl.getASTContext().getDiagnostics()));
-            e.add_decorators(decorators::parse(e.comment().value()));
-        }
-    }
-
     void add_incomplete_forward_declarations();
 
     void resolve_local_to_global_ids();
@@ -229,8 +214,6 @@ private:
     std::optional<common::model::diagram_element::id_t> get_ast_local_id(
         int64_t local_id) const;
 
-    clang::SourceManager &source_manager_;
-
     // Reference to the output diagram model
     clanguml::class_diagram::model::diagram &diagram_;
 

src/common/generators/plantuml/generator.h

@@ -133,10 +133,7 @@ inja::json generator<C, D>::element_context(const E &e) const
     }
 
     if (e.comment().has_value()) {
-        std::string c = e.comment().value();
+        ctx["element"]["comment"] = e.comment().value();
-        if (!c.empty()) {
-            ctx["element"]["comment"] = util::trim(c);
-        }
     }
 
     return ctx;
@@ -186,10 +183,12 @@ void generator<C, D>::generate_plantuml_directives(
     using common::model::namespace_;
 
     for (const auto &d : directives) {
+        try {
             // Render the directive with template engine first
             std::string directive{env().render(std::string_view{d}, context())};
 
             // Now search for alias @A() directives in the text
+            // (this is deprecated)
             std::tuple<std::string, size_t, size_t> alias_match;
             while (util::find_element_alias(directive, alias_match)) {
                 const auto full_name =
@@ -206,8 +205,14 @@ void generator<C, D>::generate_plantuml_directives(
                         std::get<2>(alias_match), "UNKNOWN_ALIAS");
                 }
             }
+
             ostr << directive << '\n';
         }
+        catch (const inja::json::exception &e) {
+            LOG_ERROR("Failed to render PlantUML directive: \n{}\n due to: {}",
+                d, e.what());
+        }
+    }
 }
 
 template <typename C, typename D>
@@ -433,10 +438,14 @@ template <typename C, typename D> void generator<C, D>::init_env()
     //   {{ element("clanguml::t00050::A").comment }}
     //
     m_env.add_callback("element", 1, [this](inja::Arguments &args) {
+        inja::json res{};
         auto element_opt = m_model.get_with_namespace(
             args[0]->get<std::string>(), m_config.using_namespace());
 
-        return element_opt.value().context();
+        if (element_opt.has_value())
+            res = element_opt.value().context();
+
+        return res;
     });
 
     // Convert C++ entity to PlantUML alias, e.g.
@@ -457,16 +466,18 @@ template <typename C, typename D> void generator<C, D>::init_env()
     //   {{ element("A").comment }}
     //
     m_env.add_callback("comment", 1, [this](inja::Arguments &args) {
-        std::string res{};
+        inja::json res{};
         auto element = m_model.get_with_namespace(
             args[0]->get<std::string>(), m_config.using_namespace());
 
         if (element.has_value()) {
             auto comment = element.value().comment();
 
-            if (comment.has_value())
+            if (comment.has_value()) {
+                assert(comment.value().is_object());
                 res = comment.value();
             }
+        }
 
         return res;
     });

src/common/model/decorated_element.cc

@@ -88,10 +88,7 @@ void decorated_element::append(const decorated_element &de)
     }
 }
 
-std::optional<std::string> decorated_element::comment() const
+std::optional<comment_t> decorated_element::comment() const { return comment_; }
-{
-    return comment_;
-}
 
-void decorated_element::set_comment(const std::string &c) { comment_ = c; }
+void decorated_element::set_comment(const comment_t &c) { comment_ = c; }
 }

src/common/model/decorated_element.h

@@ -20,14 +20,20 @@
 #include "enums.h"
 
 #include "decorators/decorators.h"
+#include "inja/inja.hpp"
 
+#include <any>
 #include <memory>
 #include <optional>
 #include <string>
+#include <unordered_map>
+#include <variant>
 #include <vector>
 
 namespace clanguml::common::model {
 
+using comment_t = inja::json;
+
 class decorated_element {
 public:
     bool skip() const;
@@ -46,13 +52,13 @@ public:
 
     void append(const decorated_element &de);
 
-    std::optional<std::string> comment() const;
+    std::optional<comment_t> comment() const;
 
-    void set_comment(const std::string &c);
+    void set_comment(const comment_t &c);
 
 private:
     std::vector<std::shared_ptr<decorators::decorator>> decorators_;
-    std::optional<std::string> comment_;
+    std::optional<comment_t> comment_;
 };
 
 }

src/common/model/diagram_element.h

@@ -19,6 +19,7 @@
 
 #include "decorated_element.h"
 #include "relationship.h"
+#include "source_location.h"
 #include "util/util.h"
 
 #include <inja/inja.hpp>
@@ -30,7 +31,7 @@
 
 namespace clanguml::common::model {
 
-class diagram_element : public decorated_element {
+class diagram_element : public decorated_element, public source_location {
 public:
     using id_t = int64_t;
 

src/common/model/element.cc

@@ -44,8 +44,9 @@ inja::json element::context() const
     ctx["alias"] = alias();
     ctx["full_name"] = full_name(false);
     ctx["namespace"] = get_namespace().to_string();
-    if (comment().has_value())
+    if (comment().has_value()) {
         ctx["comment"] = comment().value();
+    }
 
     return ctx;
 }

src/common/model/element.h

@@ -32,7 +32,7 @@
 
 namespace clanguml::common::model {
 
-class element : public diagram_element, public source_location {
+class element : public diagram_element {
 public:
     element(const namespace_ &using_namespace);
 

src/common/model/source_file.h

@@ -45,7 +45,6 @@ using filesystem_path = common::model::path<fs_path_sep>;
 class source_file
     : public common::model::diagram_element,
       public common::model::stylable_element,
-      public source_location,
       public common::model::nested_trait<common::model::source_file,
           filesystem_path> {
 public:

src/common/visitor/comment/clang_visitor.cc

@@ -0,0 +1,221 @@
+/**
+ * src/common/visitor/comment/clang_visitor.cc
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "clang_visitor.h"
+
+namespace clanguml::common::visitor::comment {
+
+clang_visitor::clang_visitor(clang::SourceManager &source_manager)
+    : comment_visitor{source_manager}
+{
+}
+
+void clang_visitor::visit(
+    const clang::NamedDecl &decl, common::model::decorated_element &e)
+{
+    const auto *comment =
+        decl.getASTContext().getRawCommentForDeclNoCache(&decl);
+
+    if (comment == nullptr) {
+        return;
+    }
+
+    auto raw_comment = comment->getRawText(source_manager());
+
+    auto formatted_comment = comment->getFormattedText(
+        source_manager(), decl.getASTContext().getDiagnostics());
+
+    common::model::comment_t cmt = inja::json::object();
+    cmt["raw"] = raw_comment;
+    cmt["formatted"] = formatted_comment;
+
+    using clang::comments::BlockCommandComment;
+    using clang::comments::Comment;
+    using clang::comments::FullComment;
+    using clang::comments::ParagraphComment;
+    using clang::comments::ParamCommandComment;
+    using clang::comments::TextComment;
+    using clang::comments::TParamCommandComment;
+
+    FullComment *full_comment =
+        comment->parse(decl.getASTContext(), nullptr, &decl);
+
+    const auto &traits = decl.getASTContext().getCommentCommandTraits();
+
+    for (const auto *block : full_comment->getBlocks()) {
+        const auto block_kind = block->getCommentKind();
+        if (block_kind == Comment::ParagraphCommentKind) {
+            std::string paragraph_text;
+
+            visit_paragraph(clang::dyn_cast<ParagraphComment>(block), traits,
+                paragraph_text);
+            if (!cmt.contains("text"))
+                cmt["text"] = "";
+
+            cmt["text"] =
+                cmt["text"].get<std::string>() + "\n" + paragraph_text;
+        }
+        else if (block_kind == Comment::TextCommentKind) {
+            // TODO
+        }
+        else if (block_kind == Comment::ParamCommandCommentKind) {
+            visit_param_command(
+                clang::dyn_cast<ParamCommandComment>(block), traits, cmt);
+        }
+        else if (block_kind == Comment::TParamCommandCommentKind) {
+            visit_tparam_command(
+                clang::dyn_cast<TParamCommandComment>(block), traits, cmt);
+        }
+        else if (block_kind == Comment::BlockCommandCommentKind) {
+            auto *command = clang::dyn_cast<BlockCommandComment>(block);
+            auto command_info = traits.getCommandInfo(command->getCommandID());
+
+            if (command_info->IsBlockCommand && command_info->NumArgs == 0) {
+                // Visit block command with a single text argument, e.g.:
+                //    \brief text
+                //    \todo text
+                //    ...
+                visit_block_command(command, traits, cmt);
+            }
+            else if (command_info->IsParamCommand) {
+                // Visit function param block:
+                //   \param arg text
+                visit_param_command(
+                    clang::dyn_cast<ParamCommandComment>(command), traits, cmt);
+            }
+            else if (command_info->IsTParamCommand) {
+                // Visit template param block:
+                //   \tparam typename text
+                visit_tparam_command(
+                    clang::dyn_cast<TParamCommandComment>(command), traits,
+                    cmt);
+            }
+        }
+    }
+    e.set_comment(cmt);
+}
+
+void clang_visitor::visit_block_command(
+    const clang::comments::BlockCommandComment *command,
+    const clang::comments::CommandTraits &traits, common::model::comment_t &cmt)
+{
+    using clang::comments::Comment;
+    using clang::comments::ParagraphComment;
+    using clang::comments::TextComment;
+
+    std::string command_text;
+
+    for (auto paragraph_it = command->child_begin();
+         paragraph_it != command->child_end(); ++paragraph_it) {
+
+        if ((*paragraph_it)->getCommentKind() ==
+            Comment::ParagraphCommentKind) {
+            visit_paragraph(clang::dyn_cast<ParagraphComment>(*paragraph_it),
+                traits, command_text);
+        }
+    }
+
+    const auto command_name = command->getCommandName(traits).str();
+    if (!command_text.empty()) {
+        if (!cmt.contains(command_name))
+            cmt[command_name] = inja::json::array();
+
+        cmt[command_name].push_back(command_text);
+    }
+}
+
+void clang_visitor::visit_param_command(
+    const clang::comments::ParamCommandComment *command,
+    const clang::comments::CommandTraits &traits, common::model::comment_t &cmt)
+{
+    using clang::comments::Comment;
+    using clang::comments::ParagraphComment;
+    using clang::comments::TextComment;
+
+    std::string description;
+
+    const auto name = command->getParamNameAsWritten().str();
+
+    for (auto it = command->child_begin(); it != command->child_end(); ++it) {
+
+        if ((*it)->getCommentKind() == Comment::ParagraphCommentKind) {
+            visit_paragraph(
+                clang::dyn_cast<ParagraphComment>(*it), traits, description);
+        }
+    }
+
+    if (!name.empty()) {
+        if (!cmt.contains("param"))
+            cmt["param"] = inja::json::array();
+
+        inja::json param = inja::json::object();
+        param["name"] = name;
+        param["description"] = description;
+        cmt["param"].push_back(std::move(param));
+    }
+}
+
+void clang_visitor::visit_tparam_command(
+    const clang::comments::TParamCommandComment *command,
+    const clang::comments::CommandTraits &traits, common::model::comment_t &cmt)
+{
+    using clang::comments::Comment;
+    using clang::comments::ParagraphComment;
+    using clang::comments::TextComment;
+
+    std::string description;
+
+    const auto name = command->getParamNameAsWritten().str();
+
+    for (auto it = command->child_begin(); it != command->child_end(); ++it) {
+        if ((*it)->getCommentKind() == Comment::ParagraphCommentKind) {
+            visit_paragraph(
+                clang::dyn_cast<ParagraphComment>(*it), traits, description);
+        }
+    }
+
+    if (!name.empty()) {
+        if (!cmt.contains("tparam"))
+            cmt["tparam"] = inja::json::array();
+
+        inja::json param = inja::json::object();
+        param["name"] = name;
+        param["description"] = description;
+        cmt["tparam"].push_back(std::move(param));
+    }
+}
+
+void clang_visitor::visit_paragraph(
+    const clang::comments::ParagraphComment *paragraph,
+    const clang::comments::CommandTraits &traits, std::string &text)
+{
+    using clang::comments::Comment;
+    using clang::comments::TextComment;
+
+    for (auto text_it = paragraph->child_begin();
+         text_it != paragraph->child_end(); ++text_it) {
+
+        if ((*text_it)->getCommentKind() == Comment::TextCommentKind) {
+            // Merge paragraph lines into a single string
+            text += clang::dyn_cast<TextComment>((*text_it))->getText();
+            text += "\n";
+        }
+    }
+}
+
+}

src/common/visitor/comment/clang_visitor.h

@@ -0,0 +1,54 @@
+/**
+ * src/common/visitor/comment/clang_visitor.h
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <clang/AST/ASTContext.h>
+#include <clang/AST/Comment.h>
+#include <clang/Basic/SourceManager.h>
+
+#include "comment_visitor.h"
+
+namespace clanguml::common::visitor::comment {
+
+class clang_visitor : public comment_visitor {
+public:
+    clang_visitor(clang::SourceManager &source_manager);
+
+    void visit(const clang::NamedDecl &decl,
+        common::model::decorated_element &e) override;
+
+private:
+    void visit_block_command(
+        const clang::comments::BlockCommandComment *command,
+        const clang::comments::CommandTraits &traits,
+        common::model::comment_t &cmt);
+
+    void visit_param_command(
+        const clang::comments::ParamCommandComment *command,
+        const clang::comments::CommandTraits &traits,
+        common::model::comment_t &cmt);
+
+    void visit_tparam_command(
+        const clang::comments::TParamCommandComment *command,
+        const clang::comments::CommandTraits &traits,
+        common::model::comment_t &cmt);
+
+    void visit_paragraph(const clang::comments::ParagraphComment *paragraph,
+        const clang::comments::CommandTraits &traits, std::string &text);
+};
+}

src/common/visitor/comment/comment_visitor.cc

@@ -0,0 +1,33 @@
+/**
+ * src/common/visitor/comment/comment_visitor.cc
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "comment_visitor.h"
+
+namespace clanguml::common::visitor::comment {
+
+comment_visitor::comment_visitor(clang::SourceManager &source_manager)
+    : source_manager_{source_manager}
+{
+}
+
+clang::SourceManager &comment_visitor::source_manager()
+{
+    return source_manager_;
+}
+
+}

src/common/visitor/comment/comment_visitor.h

@@ -0,0 +1,41 @@
+/**
+ * src/common/visitor/comment/comment_visitor.h
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <clang/AST/Comment.h>
+#include <clang/Basic/SourceManager.h>
+
+#include "common/model/decorated_element.h"
+
+namespace clanguml::common::visitor::comment {
+
+class comment_visitor {
+public:
+    comment_visitor(clang::SourceManager &source_manager);
+
+    virtual ~comment_visitor() = default;
+
+    virtual void visit(
+        const clang::NamedDecl &decl, common::model::decorated_element &e) = 0;
+
+    clang::SourceManager &source_manager();
+
+private:
+    clang::SourceManager &source_manager_;
+};
+}

src/common/visitor/comment/plain_visitor.cc

@@ -0,0 +1,50 @@
+/**
+ * src/common/visitor/comment/plain_visitor.cc
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "plain_visitor.h"
+
+namespace clanguml::common::visitor::comment {
+
+plain_visitor::plain_visitor(clang::SourceManager &source_manager)
+    : comment_visitor{source_manager}
+{
+}
+
+void plain_visitor::visit(
+    const clang::NamedDecl &decl, common::model::decorated_element &e)
+{
+    const auto *comment =
+        decl.getASTContext().getRawCommentForDeclNoCache(&decl);
+
+    if (comment == nullptr) {
+        return;
+    }
+
+    auto raw_comment = comment->getRawText(source_manager());
+
+    auto formatted_comment = comment->getFormattedText(
+        source_manager(), decl.getASTContext().getDiagnostics());
+
+    common::model::comment_t cmt = inja::json::object();
+    cmt["raw"] = raw_comment;
+    cmt["formatted"] = formatted_comment;
+
+    e.set_comment(cmt);
+}
+
+}

src/common/visitor/comment/plain_visitor.h

@@ -0,0 +1,35 @@
+/**
+ * src/common/visitor/comment/plain_visitor.h
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <clang/AST/ASTContext.h>
+#include <clang/AST/Comment.h>
+#include <clang/Basic/SourceManager.h>
+
+#include "comment_visitor.h"
+
+namespace clanguml::common::visitor::comment {
+
+class plain_visitor : public comment_visitor {
+public:
+    plain_visitor(clang::SourceManager &source_manager);
+
+    void visit(const clang::NamedDecl &decl,
+        common::model::decorated_element &e) override;
+};
+}

src/common/visitor/translation_unit_visitor.cc

@@ -0,0 +1,76 @@
+/**
+ * src/common/visitor/translation_unit_visitor.cc
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "translation_unit_visitor.h"
+
+#include "comment/clang_visitor.h"
+#include "comment/plain_visitor.h"
+
+namespace clanguml::common::visitor {
+
+translation_unit_visitor::translation_unit_visitor(
+    clang::SourceManager &sm, const clanguml::config::diagram &config)
+    : source_manager_{sm}
+    , config_{config}
+{
+    if (config.comment_parser() == config::comment_parser_t::plain) {
+        comment_visitor_ =
+            std::make_unique<comment::plain_visitor>(source_manager_);
+    }
+    else if (config.comment_parser() == config::comment_parser_t::clang) {
+        comment_visitor_ =
+            std::make_unique<comment::clang_visitor>(source_manager_);
+    }
+}
+
+clang::SourceManager &translation_unit_visitor::source_manager() const
+{
+    return source_manager_;
+}
+
+void translation_unit_visitor::process_comment(
+    const clang::NamedDecl &decl, clanguml::common::model::decorated_element &e)
+{
+
+    assert(comment_visitor_.get() != nullptr);
+
+    comment_visitor_->visit(decl, e);
+
+    const auto *comment =
+        decl.getASTContext().getRawCommentForDeclNoCache(&decl);
+
+    if (comment != nullptr) {
+        // Process clang-uml decorators in the comments
+        // TODO: Refactor to use standard block comments processable by clang
+        //       comments
+        e.add_decorators(decorators::parse(comment->getFormattedText(
+            source_manager_, decl.getASTContext().getDiagnostics())));
+    }
+}
+
+void translation_unit_visitor::set_source_location(
+    const clang::Decl &decl, clanguml::common::model::source_location &element)
+{
+    if (decl.getLocation().isValid()) {
+        element.set_file(source_manager_.getFilename(decl.getLocation()).str());
+        element.set_line(
+            source_manager_.getSpellingLineNumber(decl.getLocation()));
+    }
+}
+
+}

src/common/visitor/translation_unit_visitor.h

@@ -0,0 +1,62 @@
+/**
+ * src/common/visitor/translation_unit_visitor.h
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "comment/comment_visitor.h"
+#include "config/config.h"
+
+#include <clang/AST/Comment.h>
+#include <clang/Basic/SourceManager.h>
+
+#include <deque>
+#include <functional>
+#include <map>
+#include <memory>
+#include <string>
+
+namespace clanguml::common::visitor {
+
+using found_relationships_t =
+    std::vector<std::pair<clanguml::common::model::diagram_element::id_t,
+        common::model::relationship_t>>;
+
+class translation_unit_visitor {
+public:
+    explicit translation_unit_visitor(
+        clang::SourceManager &sm, const clanguml::config::diagram &config);
+
+    clang::SourceManager &source_manager() const;
+
+    void finalize();
+
+protected:
+    void set_source_location(const clang::Decl &decl,
+        clanguml::common::model::source_location &element);
+
+    void process_comment(const clang::NamedDecl &decl,
+        clanguml::common::model::decorated_element &e);
+
+private:
+    clang::SourceManager &source_manager_;
+
+    // Reference to diagram config
+    const clanguml::config::diagram &config_;
+
+    std::unique_ptr<comment::comment_visitor> comment_visitor_;
+};
+}

src/config/config.cc

@@ -100,6 +100,7 @@ void inheritable_diagram_options::inherit(
     git.override(parent.git);
     base_directory.override(parent.base_directory);
     relative_to.override(parent.relative_to);
+    comment_parser.override(parent.comment_parser);
 }
 
 std::string inheritable_diagram_options::simplify_template_type(
@@ -284,6 +285,21 @@ void get_option<method_arguments>(
     }
 }
 
+template <>
+void get_option<clanguml::config::comment_parser_t>(const Node &node,
+    clanguml::config::option<clanguml::config::comment_parser_t> &option)
+{
+    if (node[option.name]) {
+        const auto &val = node[option.name].as<std::string>();
+        if (val == "plain")
+            option.set(clanguml::config::comment_parser_t::plain);
+        else if (val == "clang")
+            option.set(clanguml::config::comment_parser_t::clang);
+        else
+            throw std::runtime_error("Invalid comment_parser value: " + val);
+    }
+}
+
 std::shared_ptr<clanguml::config::diagram> parse_diagram_config(const Node &d)
 {
     const auto diagram_type = d["type"].as<std::string>();
@@ -532,6 +548,8 @@ template <typename T> bool decode_diagram(const Node &node, T &rhs)
     get_option(node, rhs.puml);
     get_option(node, rhs.git);
     get_option(node, rhs.generate_links);
+    get_option(node, rhs.type_aliases);
+    get_option(node, rhs.comment_parser);
 
     return true;
 }
@@ -552,6 +570,7 @@ template <> struct convert<class_diagram> {
         get_option(node, rhs.generate_packages);
         get_option(node, rhs.relationship_hints);
         get_option(node, rhs.type_aliases);
+        //        get_option(node, rhs.comment_parser);
 
         rhs.initialize_relationship_hints();
         rhs.initialize_type_aliases();

src/config/config.h

@@ -37,6 +37,8 @@ namespace config {
 
 enum class method_arguments { full, abbreviated, none };
 
+enum class comment_parser_t { plain, clang };
+
 struct plantuml {
     std::vector<std::string> before;
     std::vector<std::string> after;
@@ -138,6 +140,8 @@ struct inheritable_diagram_options {
     option<bool> generate_system_headers{"generate_system_headers", false};
     option<relationship_hints_t> relationship_hints{"relationship_hints"};
     option<type_aliases_t> type_aliases{"type_aliases"};
+    option<comment_parser_t> comment_parser{
+        "comment_parser", comment_parser_t::plain};
 
     void inherit(const inheritable_diagram_options &parent);
 

src/include_diagram/visitor/translation_unit_visitor.cc

@@ -37,7 +37,7 @@ translation_unit_visitor::include_visitor::include_visitor(
     clang::SourceManager &sm,
     clanguml::include_diagram::model::diagram &diagram,
     const clanguml::config::include_diagram &config)
-    : source_manager_{sm}
+    : common::visitor::translation_unit_visitor{sm, config}
     , diagram_{diagram}
     , config_{config}
 {
@@ -55,7 +55,7 @@ void translation_unit_visitor::include_visitor::InclusionDirective(
     using common::model::source_file_t;
 
     auto current_file =
-        std::filesystem::path{source_manager_.getFilename(hash_loc).str()};
+        std::filesystem::path{source_manager().getFilename(hash_loc).str()};
     current_file = std::filesystem::absolute(current_file);
     current_file = current_file.lexically_normal();
 

src/include_diagram/visitor/translation_unit_visitor.h

@@ -19,6 +19,7 @@
 
 #include "common/model/enums.h"
 #include "common/model/package.h"
+#include "common/visitor/translation_unit_visitor.h"
 #include "config/config.h"
 #include "include_diagram/model/diagram.h"
 
@@ -39,7 +40,8 @@ class translation_unit_visitor
 public:
     // This is an internal class for convenience to be able to access the
     // include_visitor type from translation_unit_visitor type
-    class include_visitor : public clang::PPCallbacks {
+    class include_visitor : public clang::PPCallbacks,
+                            public common::visitor::translation_unit_visitor {
     public:
         include_visitor(clang::SourceManager &sm,
             clanguml::include_diagram::model::diagram &diagram,
@@ -74,8 +76,6 @@ public:
         }
 
     private:
-        clang::SourceManager &source_manager_;
-
         // Reference to the output diagram model
         clanguml::include_diagram::model::diagram &diagram_;
 

src/package_diagram/visitor/translation_unit_visitor.cc

@@ -39,7 +39,7 @@ using clanguml::package_diagram::model::diagram;
 translation_unit_visitor::translation_unit_visitor(clang::SourceManager &sm,
     clanguml::package_diagram::model::diagram &diagram,
     const clanguml::config::package_diagram &config)
-    : source_manager_{sm}
+    : common::visitor::translation_unit_visitor{sm, config}
     , diagram_{diagram}
     , config_{config}
 {
@@ -107,7 +107,7 @@ bool translation_unit_visitor::VisitFunctionDecl(
     assert(function_declaration != nullptr);
 
     // Skip system headers
-    if (source_manager_.isInSystemHeader(
+    if (source_manager().isInSystemHeader(
             function_declaration->getSourceRange().getBegin()))
         return true;
 
@@ -130,7 +130,7 @@ bool translation_unit_visitor::VisitCXXRecordDecl(clang::CXXRecordDecl *cls)
     assert(cls != nullptr);
 
     // Skip system headers
-    if (source_manager_.isInSystemHeader(cls->getSourceRange().getBegin()))
+    if (source_manager().isInSystemHeader(cls->getSourceRange().getBegin()))
         return true;
 
     // Templated records are handled by VisitClassTemplateDecl()

src/package_diagram/visitor/translation_unit_visitor.h

@@ -17,6 +17,7 @@
  */
 #pragma once
 
+#include "common/visitor/translation_unit_visitor.h"
 #include "config/config.h"
 #include "package_diagram/model/diagram.h"
 
@@ -37,7 +38,8 @@ using found_relationships_t =
         common::model::relationship_t>>;
 
 class translation_unit_visitor
-    : public clang::RecursiveASTVisitor<translation_unit_visitor> {
+    : public clang::RecursiveASTVisitor<translation_unit_visitor>,
+      public common::visitor::translation_unit_visitor {
 public:
     translation_unit_visitor(clang::SourceManager &sm,
         clanguml::package_diagram::model::diagram &diagram,
@@ -88,33 +90,6 @@ private:
     void add_relationships(
         clang::DeclContext *cls, found_relationships_t &relationships);
 
-    template <typename ClangDecl>
-    void process_comment(
-        const ClangDecl &decl, clanguml::common::model::decorated_element &e)
-    {
-        const auto *comment =
-            decl.getASTContext().getRawCommentForDeclNoCache(&decl);
-
-        if (comment != nullptr) {
-            e.set_comment(comment->getFormattedText(
-                source_manager_, decl.getASTContext().getDiagnostics()));
-            e.add_decorators(decorators::parse(e.comment().value()));
-        }
-    }
-
-    void set_source_location(const clang::Decl &decl,
-        clanguml::common::model::source_location &element)
-    {
-        if (decl.getLocation().isValid()) {
-            element.set_file(
-                source_manager_.getFilename(decl.getLocation()).str());
-            element.set_line(
-                source_manager_.getSpellingLineNumber(decl.getLocation()));
-        }
-    }
-
-    clang::SourceManager &source_manager_;
-
     // Reference to the output diagram model
     clanguml::package_diagram::model::diagram &diagram_;
 

tests/t00002/.clang-uml

@@ -5,6 +5,7 @@ diagrams:
     type: class
     glob:
       - ../../tests/t00002/t00002.cc
+    comment_parser: clang
     using_namespace:
       - clanguml::t00002
     include:

tests/t00002/t00002.cc

@@ -3,7 +3,7 @@
 namespace clanguml {
 namespace t00002 {
 
-/// This is class A
+/// \brief This is class A
 class A {
 public:
     /// Abstract foo_a
@@ -12,7 +12,7 @@ public:
     virtual void foo_c() = 0;
 };
 
-/// This is class B
+/// \brief This is class B
 class B : public A {
 public:
     virtual void foo_a() override { }

tests/t00050/.clang-uml

@@ -5,6 +5,7 @@ diagrams:
     type: class
     glob:
       - ../../tests/t00050/t00050.cc
+    comment_parser: clang
     include:
       namespaces:
         - clanguml::t00050
@@ -13,30 +14,47 @@ diagrams:
       after:
         - >
            note left of {{ alias("A") }}          
-              {{ comment("clanguml::t00050::A") }}
+              {{ comment("clanguml::t00050::A").formatted }}          
            end note
-
         - >
           note right of {{ element("clanguml::t00050::A").alias }}
-             {{ element("A").comment }}
+             {% set e=element("clanguml::t00050::A") %} {{ e.comment.formatted }}          
+          end note
+        - >
+          note left of {{ alias("C") }} #AABBCC                 
+             {{ trim(comment("clanguml::t00050::C").text) }}          
           end note
 
         - >
-          {% for element in diagram.elements %}
+          {# Render brief comments and todos, if any were written for an element #}
-          {% if element.type == "class" and existsIn(element, "comment")  %}
+          {% for e in diagram.elements %}
+          {% if existsIn(e, "comment") and existsIn(e.comment, "brief") %}
   
-          note top of {{ element.alias }}
+          note top of {{ e.alias }} {% if e.type == "class" %} #22AA22 {% else %} #2222AA {% endif %}
-             {{ element.comment }}
+             {% set c=e.comment %} {{ c.brief.0 }}
-          end note
+          end note
-          
+          
-          {% endif %}
+          {% endif %}
-          {% endfor %}
+          {% if existsIn(e, "comment") and existsIn(e.comment, "todo") %}
-        - >
+          {% set c=e.comment %} 
-          {% for element in diagram.elements %}
+          {% for t in c.todo %}
-          {% if element.type == "enum" and existsIn(element, "comment") %}
+          note top of {{ e.alias }} #882222           
-          
+             **TODO**
-          note bottom of {{ element.alias }}
+             {{ t }}
-             {{ element.comment }}
+          end note
+          
+          {% endfor %}
+
+          {% endif %}
+          {# Render template paramete if any #}
+          {% if existsIn(e, "comment") and existsIn(e.comment, "tparam") %}
+          {% set c=e.comment %} 
+
+          note top of {{ e.alias }} #AAAAFF           
+             **Template parameters**
+             {% for tp in c.tparam %}
+             //{{ tp.name }}// {{ trim(tp.description) }}        
+             {% endfor %}
           end note
 
           {% endif %}

tests/t00050/t00050.cc

@@ -11,15 +11,23 @@ class A {
 };
 
 /**
+ * \brief Lorem ipsum
+ *
  * Lorem ipsum dolor sit amet consectetur adipiscing elit, urna consequat felis
  * vehicula class ultricies mollis dictumst, aenean non a in donec nulla.
  * Phasellus ante pellentesque erat cum risus consequat imperdiet aliquam,
  * integer placerat et turpis mi eros nec lobortis taciti, vehicula nisl litora
  * tellus ligula porttitor metus.
+ *
+ * \todo 1. Write meaningful comment
+ * \todo 2. Write tests
+ * \todo 3. Implement
  */
 class B {
 };
 
+/// \brief Long comment example
+///
 /// Lorem ipsum dolor sit amet consectetur adipiscing elit, urna consequat felis
 /// vehicula class ultricies mollis dictumst, aenean non a in donec nulla.
 /// Phasellus ante pellentesque erat cum risus consequat imperdiet aliquam,
@@ -56,6 +64,8 @@ namespace utils {
 /// Phasellus ante pellentesque erat cum risus consequat imperdiet aliquam,
 /// integer placerat et turpis mi eros nec lobortis taciti, vehicula nisl litora
 /// tellus ligula porttitor metus.
+///
+/// \todo Implement...
 class D {
 };
 
@@ -64,6 +74,20 @@ class D {
 /// Mollis pretium lorem primis
 enum class E { E1, E2, E3 };
 
+/// \brief Simple array wrapper.
+///
+/// This class is just for testing tparam parsing, it serves no other
+/// purpose.
+///
+/// \tparam T Type of array elements.
+/// \tparam V Type of regular element.
+/// \tparam N Size of T array.
+///
+template <typename T, typename V, int N> class F {
+    T t[N];
+    V v;
+};
+
 class NoComment {
 };
 

tests/t00050/test_case.h

@@ -42,13 +42,13 @@ TEST_CASE("t00050", "[test-case][class]")
     REQUIRE_THAT(puml, IsEnum(_A("E")));
 
     REQUIRE_THAT(puml, HasNote(_A("A"), "left"));
-    REQUIRE_THAT(puml, HasNote(_A("A"), "top"));
     REQUIRE_THAT(puml, HasNote(_A("A"), "right"));
     REQUIRE_THAT(puml, HasNote(_A("B"), "top"));
     REQUIRE_THAT(puml, HasNote(_A("C"), "top"));
     REQUIRE_THAT(puml, HasNote(_A("utils::D"), "top"));
-    REQUIRE_THAT(puml, HasNote(_A("E"), "bottom"));
+    REQUIRE_THAT(puml, !HasNote(_A("E"), "bottom"));
     REQUIRE_THAT(puml, !HasNote(_A("NoComment"), "top"));
+    REQUIRE_THAT(puml, HasNote(_A("F<T,V,int N>"), "top"));
 
     save_puml(
         "./" + config.output_directory() + "/" + diagram->name + ".puml", puml);

tests/test_cases.cc

@@ -25,7 +25,7 @@ void inject_diagram_options(std::shared_ptr<clanguml::config::diagram> diagram)
     // Inject links config to all test cases
     clanguml::config::generate_links_config links_config{
         R"(https://github.com/bkryza/clang-uml/blob/{{ git.commit }}/{{ element.source.path }}#L{{ element.source.line }})",
-        R"({% if "comment" in element %}{{ abbrv(trim(replace(element.comment, "\n+", " ")), 256) }}{% else %}{{ element.name }}{% endif %})"};
+        R"({% if existsIn(element, "comment") and existsIn(element.comment, "brief")  %}{{ abbrv(trim(replace(element.comment.brief.0, "\n+", " ")), 256) }}{% else %}{{ element.name }}{% endif %})"};
 
     diagram->generate_links.set(links_config);
 }

tests/test_config.cc

@@ -44,6 +44,9 @@ TEST_CASE("Test config simple", "[unit-test]")
         "element.source.file }}#L{{ element.source.line }}");
     CHECK(diagram.generate_links().tooltip == "{{ element.comment }}");
 
+    CHECK(
+        diagram.comment_parser() == clanguml::config::comment_parser_t::clang);
+
     CHECK(contains(diagram.include().access, access_t::kPublic));
     CHECK(contains(diagram.include().access, access_t::kProtected));
     CHECK(contains(diagram.include().access, access_t::kPrivate));

tests/test_config_data/simple.yml

@@ -7,6 +7,7 @@ diagrams:
     glob:
       - src/**/*.cc
       - src/**/*.h
+    comment_parser: clang
     using_namespace: clanguml
     generate_method_arguments: full
     generate_packages: true