Added support for class diagram filtering based on C++20 modules (#195)

tests/t00070/.clang-uml

@@ -0,0 +1,12 @@
+diagrams:
+  t00070_class:
+    type: class
+    glob:
+      - t00070.cc
+    include:
+      modules:
+        - t00070
+    exclude:
+      modules:
+        - t00070.lib2
+    using_namespace: clanguml::t00070

tests/t00070/src/common.cppm

@@ -0,0 +1,11 @@
+export module t00070;
+export import t00070.lib1;
+export import t00070.lib2;
+
+export namespace clanguml::t00070 {
+class A {
+    int get() { return a; }
+
+    int a;
+};
+}

tests/t00070/src/lib1.cppm

@@ -0,0 +1,11 @@
+export module t00070.lib1;
+
+export namespace clanguml::t00070 {
+class B { };
+
+template <typename T> class BB {
+    T t;
+};
+
+enum class BBB { bbb1, bbb2 };
+}

tests/t00070/src/lib2.cppm

@@ -0,0 +1,11 @@
+export module t00070.lib2;
+
+export namespace clanguml::t00070 {
+class C { };
+
+template <typename T> class CC {
+    T t;
+};
+
+enum class CCC { ccc1, ccc2 };
+}

tests/t00070/t00070.cc

@@ -0,0 +1,14 @@
+import t00070.lib1;
+import t00070.lib2;
+
+namespace clanguml {
+namespace t00070 {
+int tmain()
+{
+    B b;
+    C c;
+
+    return 0;
+}
+}
+}

tests/t00070/test_case.h

@@ -0,0 +1,78 @@
+/**
+ * tests/t00070/test_case.h
+ *
+ * Copyright (c) 2021-2023 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.
+ */
+
+TEST_CASE("t00070", "[test-case][class]")
+{
+    auto [config, db] = load_config("t00070");
+
+    auto diagram = config.diagrams["t00070_class"];
+
+    REQUIRE(diagram->name == "t00070_class");
+
+    auto model = generate_class_diagram(*db, diagram);
+
+    REQUIRE(model->name() == "t00070_class");
+
+    {
+        auto src = generate_class_puml(diagram, *model);
+        AliasMatcher _A(src);
+
+        REQUIRE_THAT(src, StartsWith("@startuml"));
+        REQUIRE_THAT(src, EndsWith("@enduml\n"));
+
+        REQUIRE_THAT(src, !IsClass(_A("A")));
+        REQUIRE_THAT(src, IsClass(_A("B")));
+        REQUIRE_THAT(src, !IsClass(_A("C")));
+
+        REQUIRE_THAT(src, IsClassTemplate("BB", "T"));
+        REQUIRE_THAT(src, !IsClassTemplate("CC", "T"));
+
+        REQUIRE_THAT(src, IsEnum(_A("BBB")));
+        REQUIRE_THAT(src, !IsEnum(_A("CCC")));
+
+        save_puml(config.output_directory(), diagram->name + ".puml", src);
+    }
+
+    {
+        auto j = generate_class_json(diagram, *model);
+
+        using namespace json;
+
+        save_json(config.output_directory(), diagram->name + ".json", j);
+    }
+
+    {
+        auto src = generate_class_mermaid(diagram, *model);
+
+        mermaid::AliasMatcher _A(src);
+        using mermaid::IsClass;
+        using mermaid::IsEnum;
+
+        REQUIRE_THAT(src, !IsClass(_A("A")));
+        REQUIRE_THAT(src, IsClass(_A("B")));
+        REQUIRE_THAT(src, !IsClass(_A("C")));
+
+        REQUIRE_THAT(src, IsClass(_A("BB<T>")));
+        REQUIRE_THAT(src, !IsClass(_A("CC<T>")));
+
+        REQUIRE_THAT(src, IsEnum(_A("BBB")));
+        REQUIRE_THAT(src, !IsEnum(_A("CCC")));
+
+        save_mermaid(config.output_directory(), diagram->name + ".mmd", src);
+    }
+}