Added recursive template sequence diagram test case

src/sequence_diagram/generators/plantuml/sequence_diagram_generator.cc

@@ -90,10 +90,9 @@ void generator::generate_return(const message &m, std::ostream &ostr) const
 {
     // Add return activity only for messages between different actors and
     // only if the return type is different than void
-    if ((m.from != m.to) && (m.return_type != "void")) {
-        const auto &from = m_model.get_participant<model::participant>(m.from);
-        const auto &to = m_model.get_participant<model::participant>(m.to);
-
+    const auto &from = m_model.get_participant<model::participant>(m.from);
+    const auto &to = m_model.get_participant<model::function>(m.to);
+    if ((m.from != m.to) && !to.value().is_void()) {
         const std::string from_alias = generate_alias(from.value());
 
         const std::string to_alias = generate_alias(to.value());

src/sequence_diagram/model/participant.cc

@@ -209,6 +209,10 @@ bool function::is_void() const { return is_void_; }
 
 void function::is_void(bool v) { is_void_ = v; }
 
+bool function::is_static() const { return is_static_; }
+
+void function::is_static(bool s) { is_static_ = s; }
+
 void function::add_parameter(const std::string &a) { parameters_.push_back(a); }
 
 const std::vector<std::string> &function::parameters() const
@@ -268,10 +272,6 @@ std::string method::to_string() const
         type_name(), id(), full_name(false), class_id());
 }
 
-bool method::is_static() const { return is_static_; }
-
-void method::is_static(bool s) { is_static_ = s; }
-
 function_template::function_template(
     const common::model::namespace_ &using_namespace)
     : function{using_namespace}

src/sequence_diagram/model/participant.h

@@ -160,6 +160,10 @@ struct function : public participant {
 
     void is_void(bool v);
 
+    bool is_static() const;
+
+    void is_static(bool s);
+
     void add_parameter(const std::string &a);
 
     const std::vector<std::string> &parameters() const;
@@ -167,6 +171,7 @@ struct function : public participant {
 private:
     bool is_const_{false};
     bool is_void_{false};
+    bool is_static_{false};
     std::vector<std::string> parameters_;
 };
 
@@ -200,15 +205,10 @@ struct method : public function {
 
     std::string to_string() const override;
 
-    bool is_static() const;
-
-    void is_static(bool s);
-
 private:
     diagram_element::id_t class_id_;
     std::string method_name_;
     std::string class_full_name_;
-    bool is_static_{false};
 };
 
 struct function_template : public function, public template_trait {