Fixed template instantiations generation without known primary template

docs/test_cases/t00014.md

@@ -13,11 +13,16 @@ diagrams:
     include:
       namespaces:
         - clanguml::t00014
+    exclude:
+      namespaces:
+        - std
+        - clanguml::t00014::std
 
 ```
 ## Source code
 ```cpp
 #include <algorithm>
+#include <functional>
 #include <ios>
 #include <map>
 #include <numeric>
@@ -46,6 +51,9 @@ template <typename T, typename P> struct A {
 
 template <typename T> using AString = A<T, std::string>;
 
+template <typename... T> using GeneralCallback = std::function<void(T..., int)>;
+using VoidCallback = GeneralCallback<>;
+
 struct B {
     std::string value;
 };
@@ -65,6 +73,8 @@ class R {
     AStringString stringstring;
     BVector bs;
     BVector2 bs2;
+    GeneralCallback<AIntString> cb;
+    VoidCallback vcb;
 };
 }
 }

src/config/config.h

@@ -111,9 +111,11 @@ struct diagram {
         auto name = clanguml::util::unqualify(name_);
 
         for (const auto &ex : exclude.namespaces) {
-            if (name.find(ex) == 0)
+            if (name.find(ex) == 0) {
+                spdlog::debug("Skipping from diagram: {}", name);
                 return false;
             }
+        }
 
         // If no inclusive namespaces are provided,
         // allow all

src/puml/class_diagram_generator.h

@@ -341,16 +341,24 @@ public:
 
         if (m_config.should_include_entities("classes")) {
             for (const auto &c : m_model.classes) {
+                if (!c.is_template_instantiation &&
+                    !m_config.should_include(c.name))
+                    continue;
                 generate_alias(c, ostr);
                 ostr << std::endl;
             }
 
             for (const auto &e : m_model.enums) {
+                if (!m_config.should_include(e.name))
+                    continue;
                 generate_alias(e, ostr);
                 ostr << std::endl;
             }
 
             for (const auto &c : m_model.classes) {
+                if (!c.is_template_instantiation &&
+                    !m_config.should_include(c.name))
+                    continue;
                 generate(c, ostr);
                 ostr << std::endl;
             }

src/uml/class_diagram_visitor.cc

@@ -1048,20 +1048,22 @@ void tu_visitor::find_relationships(const cppast::cpp_type &t_,
 class_ tu_visitor::build_template_instantiation(
     const cppast::cpp_template_instantiation_type &t)
 {
+    class_ tinst;
+    std::string full_template_name;
+
+    if (t.primary_template().get(ctx.entity_index).size()) {
         const auto &primary_template_ref =
             static_cast<const cppast::cpp_class_template &>(
                 t.primary_template().get(ctx.entity_index)[0].get())
                 .class_();
 
-    auto full_template_name =
+        full_template_name =
             cx::util::full_name(ctx.namespace_, primary_template_ref);
 
         LOG_DBG("Found template instantiation: {} ({}) ..|> {}, {}",
             cppast::to_string(t), cppast::to_string(t.canonical()),
             t.primary_template().name(), full_template_name);
 
-    class_ tinst;
-
         if (full_template_name.back() == ':')
             tinst.name = full_template_name + tinst.name;
 
@@ -1071,8 +1073,15 @@ class_ tu_visitor::build_template_instantiation(
             LOG_DBG("Primary template ref set to: {}", tinst.base_template_usr);
         }
         else
-        LOG_WARN(
+            LOG_WARN("No user data for base template {}",
-            "No user data for base template {}", primary_template_ref.name());
+                primary_template_ref.name());
+    }
+    else {
+        LOG_WARN("Template instantiation {} has no primary template",
+            cppast::to_string(t));
+
+        full_template_name = cppast::to_string(t);
+    }
 
     // Extract namespace from base template name
     auto ns_toks = clanguml::util::split(

tests/t00014/.clanguml

@@ -10,3 +10,7 @@ diagrams:
     include:
       namespaces:
         - clanguml::t00014
+    exclude:
+      namespaces:
+        - std
+        - clanguml::t00014::std

tests/t00014/t00014.cc

@@ -1,4 +1,5 @@
 #include <algorithm>
+#include <functional>
 #include <ios>
 #include <map>
 #include <numeric>
@@ -27,6 +28,9 @@ template <typename T, typename P> struct A {
 
 template <typename T> using AString = A<T, std::string>;
 
+template <typename... T> using GeneralCallback = std::function<void(T..., int)>;
+using VoidCallback = GeneralCallback<>;
+
 struct B {
     std::string value;
 };
@@ -46,6 +50,8 @@ class R {
     AStringString stringstring;
     BVector bs;
     BVector2 bs2;
+    GeneralCallback<AIntString> cb;
+    VoidCallback vcb;
 };
 }
 }

tests/t00014/test_case.h

@@ -1,5 +1,5 @@
 /**
- * tests/t00014/test_case.cc
+ * tests/t00014/test_case.h
  *
  * Copyright (c) 2021 Bartek Kryza <bkryza@gmail.com>
  *
@@ -27,7 +27,7 @@ TEST_CASE("t00014", "[test-case][class]")
     REQUIRE_THAT(diagram->include.namespaces,
         VectorContains(std::string{"clanguml::t00014"}));
 
-    REQUIRE(diagram->exclude.namespaces.size() == 0);
+    REQUIRE(diagram->exclude.namespaces.size() == 2);
 
     REQUIRE(diagram->should_include("clanguml::t00014::S"));
 
@@ -46,9 +46,6 @@ TEST_CASE("t00014", "[test-case][class]")
     REQUIRE_THAT(puml, IsClassTemplate("AString", "float"));
 
     REQUIRE_THAT(puml, IsInstantiation(_A("A<T,P>"), _A("A<T,std::string>")));
-    // TODO
-    // REQUIRE_THAT(puml, IsInstantiation(_A("A<T,std::string>"),
-    // _A("A<bool,std::string>")));
     REQUIRE_THAT(
         puml, IsInstantiation(_A("A<T,std::string>"), _A("AString<float>")));
     REQUIRE_THAT(