Added handling of anonymous nested enums

src/uml/class_diagram_visitor.cc

@@ -170,6 +170,12 @@ void tu_visitor::operator()(const cppast::cpp_entity &file)
 
 void tu_visitor::process_enum_declaration(const cppast::cpp_enum &enm)
 {
+    if (enm.name().empty()) {
+        // Anonymous enum values should be rendered as class fields
+        // with type enum
+        return;
+    }
+
     enum_ e;
     e.name = cx::util::full_name(ctx.namespace_, enm);
 
@@ -179,7 +185,7 @@ void tu_visitor::process_enum_declaration(const cppast::cpp_enum &enm)
         }
     }
 
-    // Find if class is contained in another class
+    // Find if enum is contained in a class
     for (auto cur = enm.parent(); cur; cur = cur.value().parent()) {
         // find nearest parent class, if any
         if (cur.value().kind() == cppast::cpp_entity_kind::class_t) {
@@ -246,6 +252,14 @@ void tu_visitor::process_class_declaration(const cppast::cpp_class &cls)
             auto &mc = static_cast<const cppast::cpp_destructor &>(child);
             process_destructor(mc, c, last_access_specifier);
         }
+        else if (child.kind() == cppast::cpp_entity_kind::enum_t) {
+            auto &en = static_cast<const cppast::cpp_enum &>(child);
+            if (en.name().empty()) {
+                // Here we only want to handle anonymous enums, regular nested
+                // enums are handled in the file-level visitor
+                process_anonymous_enum(en, c, last_access_specifier);
+            }
+        }
         else if (child.kind() == cppast::cpp_entity_kind::friend_t) {
             auto &fr = static_cast<const cppast::cpp_friend &>(child);
 
@@ -484,6 +498,21 @@ void tu_visitor::process_field(const cppast::cpp_member_variable &mv, class_ &c,
     c.members.emplace_back(std::move(m));
 }
 
+void tu_visitor::process_anonymous_enum(
+    const cppast::cpp_enum &en, class_ &c, cppast::cpp_access_specifier_kind as)
+{
+    for (const auto &ev : en) {
+        if (ev.kind() == cppast::cpp_entity_kind::enum_value_t) {
+            class_member m;
+            m.name = ev.name();
+            m.type = "enum"; // TODO: Try to figure out real enum type
+            m.scope = detail::cpp_access_specifier_to_scope(as);
+            m.is_static = false;
+            c.members.emplace_back(std::move(m));
+        }
+    }
+}
+
 void tu_visitor::process_static_field(const cppast::cpp_variable &mv, class_ &c,
     cppast::cpp_access_specifier_kind as)
 {
@@ -764,7 +793,7 @@ void tu_visitor::process_friend(const cppast::cpp_friend &f, class_ &parent)
         r.destination = name;
     }
     else if (f.entity()) {
-        std::string name {};
+        std::string name{};
 
         if (f.entity().value().kind() ==
             cppast::cpp_entity_kind::class_template_t) {

src/uml/class_diagram_visitor.h

@@ -153,6 +153,10 @@ public:
 
     void process_enum_declaration(const cppast::cpp_enum &enm);
 
+    void process_anonymous_enum(const cppast::cpp_enum &en,
+        clanguml::model::class_diagram::class_ &c,
+        cppast::cpp_access_specifier_kind as);
+
     void process_field(const cppast::cpp_member_variable &mv,
         clanguml::model::class_diagram::class_ &c,
         cppast::cpp_access_specifier_kind as);

tests/t00016/t00016.cc

@@ -1,30 +1,24 @@
 namespace clanguml {
 namespace t00016 {
 
-template <typename>
-struct is_numeric {
-  enum { value = false };
+template <typename> struct is_numeric {
+    enum { value = false };
 };
 
-template <>
-struct is_numeric<char> {
-  enum { value = true };
+template <> struct is_numeric<char> {
+    enum { value = true };
 };
 
-template <>
-struct is_numeric<unsigned char> {
-  enum { value = true };
+template <> struct is_numeric<unsigned char> {
+    enum { value = true };
 };
 
-template <>
-struct is_numeric<int> {
-  enum { value = true };
+template <> struct is_numeric<int> {
+    enum { value = true };
 };
 
-template <>
-struct is_numeric<bool> {
-  enum { value = false };
+template <> struct is_numeric<bool> {
+    enum { value = false };
 };
-
 }
 }