From d6552dc62923985bee1ad9dcdc57e32a07b20959 Mon Sep 17 00:00:00 2001
From: Bartek Kryza <bkryza@gmail.com>
Date: Sun, 2 May 2021 21:02:05 +0200
Subject: [PATCH] Added handling of inline namespaces

---
 docs/test_cases/t00015.md        |  54 +++++++++++++++++++++++++++++++
 docs/test_cases/t00015_class.png | Bin 0 -> 11013 bytes
 src/uml/class_diagram_visitor.cc |  15 +++++++--
 tests/t00015/t00015.cc           |  10 ++++--
 tests/t00015/test_case.h         |   6 ++--
 5 files changed, 79 insertions(+), 6 deletions(-)
 create mode 100644 docs/test_cases/t00015.md
 create mode 100644 docs/test_cases/t00015_class.png

diff --git a/docs/test_cases/t00015.md b/docs/test_cases/t00015.md
new file mode 100644
index 00000000..86432f1d
--- /dev/null
+++ b/docs/test_cases/t00015.md
@@ -0,0 +1,54 @@
+# t00015 - Namespace fun
+## Config
+```yaml
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t00015_class:
+    type: class
+    glob:
+      - ../../tests/t00015/t00015.cc
+    using_namespace:
+      - clanguml::t00015
+    include:
+      namespaces:
+        - clanguml::t00015
+
+```
+## Source code
+```cpp
+namespace clanguml {
+namespace t00015 {
+
+namespace ns1 {
+inline namespace ns2_v1_0_0 {
+class A {
+};
+}
+
+namespace ns2_v0_9_0 {
+class [[deprecated]] A {};
+}
+
+namespace {
+class Anon final : public A {
+};
+}
+}
+
+namespace ns3 {
+
+namespace ns1::ns2 {
+class Anon : public t00015::ns1::A {
+};
+}
+
+class B : public ns1::ns2::Anon {
+};
+}
+}
+}
+
+```
+## Generated UML diagrams
+![t00015_class](./t00015_class.png "Namespace fun")
diff --git a/docs/test_cases/t00015_class.png b/docs/test_cases/t00015_class.png
new file mode 100644
index 0000000000000000000000000000000000000000..02ca9ee9d757a774fde53e4f111b361d286b491e
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literal 0
HcmV?d00001

diff --git a/src/uml/class_diagram_visitor.cc b/src/uml/class_diagram_visitor.cc
index cbc44914..c15e6b51 100644
--- a/src/uml/class_diagram_visitor.cc
+++ b/src/uml/class_diagram_visitor.cc
@@ -25,6 +25,7 @@
 #include <cppast/cpp_friend.hpp>
 #include <cppast/cpp_member_function.hpp>
 #include <cppast/cpp_member_variable.hpp>
+#include <cppast/cpp_namespace.hpp>
 #include <cppast/cpp_template.hpp>
 #include <cppast/cpp_type_alias.hpp>
 #include <cppast/cpp_variable.hpp>
@@ -78,12 +79,22 @@ void tu_visitor::operator()(const cppast::cpp_entity &file)
                     cppast::visitor_info::container_entity_enter) {
                     LOG_DBG("========== Visiting '{}' - {}", e.name(),
                         cppast::to_string(e.kind()));
-                    ctx.namespace_.push_back(e.name());
+
+                    const auto &ns_declaration =
+                        static_cast<const cppast::cpp_namespace &>(e);
+                    if (!ns_declaration.is_anonymous() &&
+                        !ns_declaration.is_inline())
+                        ctx.namespace_.push_back(e.name());
                 }
                 else {
                     LOG_DBG("========== Leaving '{}' - {}", e.name(),
                         cppast::to_string(e.kind()));
-                    ctx.namespace_.pop_back();
+
+                    const auto &ns_declaration =
+                        static_cast<const cppast::cpp_namespace &>(e);
+                    if (!ns_declaration.is_anonymous() &&
+                        !ns_declaration.is_inline())
+                        ctx.namespace_.pop_back();
                 }
             }
             else if (e.kind() == cppast::cpp_entity_kind::class_t) {
diff --git a/tests/t00015/t00015.cc b/tests/t00015/t00015.cc
index 968c3a53..a7762cac 100644
--- a/tests/t00015/t00015.cc
+++ b/tests/t00015/t00015.cc
@@ -1,9 +1,15 @@
 namespace clanguml {
 namespace t00015 {
 
-namespace ns1::ns2 {
+namespace ns1 {
+inline namespace ns2_v1_0_0 {
 class A {
 };
+}
+
+namespace ns2_v0_9_0 {
+class [[deprecated]] A {};
+}
 
 namespace {
 class Anon final : public A {
@@ -14,7 +20,7 @@ class Anon final : public A {
 namespace ns3 {
 
 namespace ns1::ns2 {
-class Anon : public t00015::ns1::ns2::A {
+class Anon : public t00015::ns1::A {
 };
 }
 
diff --git a/tests/t00015/test_case.h b/tests/t00015/test_case.h
index 24e034d7..f5f89f1b 100644
--- a/tests/t00015/test_case.h
+++ b/tests/t00015/test_case.h
@@ -41,8 +41,10 @@ TEST_CASE("t00015", "[test-case][class]")
 
     REQUIRE_THAT(puml, StartsWith("@startuml"));
     REQUIRE_THAT(puml, EndsWith("@enduml\n"));
-    REQUIRE_THAT(puml, IsClass(_A("ns1::ns2::A")));
-    REQUIRE_THAT(puml, IsClass(_A("ns1::ns2::Anon")));
+    REQUIRE_THAT(puml, IsClass(_A("ns1::A")));
+    REQUIRE_THAT(puml, IsClass(_A("ns1::ns2_v0_9_0::A")));
+    REQUIRE_THAT(puml, IsClass(_A("ns1::Anon")));
+    REQUIRE_THAT(puml, IsClass(_A("ns3::ns1::ns2::Anon")));
     REQUIRE_THAT(puml, IsClass(_A("ns3::B")));
 
     save_puml(