Added decorator diagram scope

docs/test_cases/t00028.md

@@ -0,0 +1,80 @@
+# t00028 - PlantUML note decorator test case
+## Config
+```yaml
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t00028_class:
+    type: class
+    glob:
+      - ../../tests/t00028/t00028.cc
+    using_namespace:
+      - clanguml::t00028
+    include:
+      namespaces:
+        - clanguml::t00028
+
+```
+## Source code
+File t00028.cc
+```cpp
+#include <memory>
+#include <vector>
+
+namespace clanguml {
+namespace t00028 {
+
+/// \clanguml{note[top] A class note.}
+class A {
+};
+
+/// \clanguml{note[] B class note.}
+class B {
+};
+
+///
+/// @clanguml{note:t00028_class[bottom] C class note.}
+/// This is class C.
+class C {
+};
+
+/// \clanguml{note
+/// D
+/// class
+/// note.}
+class D {
+};
+
+/// \clanguml{note E template class note.}
+template <typename T> class E {
+    T param;
+};
+
+/// \clanguml{note:other_diagram[left] G class note.}
+class G {
+};
+
+/// @clanguml{note[ bottom ] F enum note.}
+enum class F { one, two, three };
+
+/// \clanguml{note[right] R class note.}
+class R {
+    A aaa;
+
+    B *bbb;
+
+    C &ccc;
+
+    std::vector<std::shared_ptr<D>> ddd;
+
+    E<int> eee;
+
+    G **ggg;
+};
+
+} // namespace t00028
+} // namespace clanguml
+
+```
+## Generated UML diagrams
+![t00028_class](./t00028_class.png "PlantUML note decorator test case")

src/puml/class_diagram_generator.h

@@ -288,7 +288,7 @@ public:
         //
         for (auto decorator : c.decorators) {
             auto note = std::dynamic_pointer_cast<decorators::note>(decorator);
-            if (note) {
+            if (note && note->applies_to_diagram(m_config.name)) {
                 ostr << "note " << note->position << " of " << c.alias() << '\n'
                      << note->text << '\n'
                      << "end note\n";
@@ -355,7 +355,7 @@ public:
         //
         for (auto decorator : e.decorators) {
             auto note = std::dynamic_pointer_cast<decorators::note>(decorator);
-            if (note) {
+            if (note && note->applies_to_diagram(m_config.name)) {
                 ostr << "note " << note->position << " of " << e.alias() << '\n'
                      << note->text << '\n'
                      << "end note\n";

src/uml/decorators.cc

@@ -52,66 +52,90 @@ std::shared_ptr<decorator> decorator::from_string(std::string_view c)
     return {};
 }
 
-std::shared_ptr<decorator> note::from_string(std::string_view c)
+bool decorator::applies_to_diagram(std::string name)
 {
-    auto res = std::make_shared<note>();
+    return diagrams.empty() ||
+        (std::find(diagrams.begin(), diagrams.end(), name) != diagrams.end());
+}
+
+decorator_toks decorator::tokenize(const std::string &label, std::string_view c)
+{
+    decorator_toks res;
+    res.label = label;
+    size_t pos{};
     auto it = c.begin();
-    std::advance(it, note::label.size());
+    std::advance(it, label.size());
+
+    if (*it == ':') {
+        std::advance(it, 1);
+
+        pos = std::distance(c.begin(), it);
+        // If the diagram list is provided after ':', [] is mandatory
+        // even if empty
+        auto d = c.substr(pos, c.find("[", pos) - pos);
+        if (!d.empty()) {
+            std::string d_str{d};
+            d_str.erase(std::remove_if(d_str.begin(), d_str.end(),
+                            (int (*)(int))std::isspace),
+                d_str.end());
+            res.diagrams = util::split(d_str, ",");
+        }
+
+        std::advance(it, d.size());
+    }
 
     if (*it == '[') {
         std::advance(it, 1);
 
-        auto pos = std::distance(c.begin(), it);
-        auto note_position = c.substr(pos, c.find("]", pos) - pos);
-        if (!note_position.empty())
-            res->position = note_position;
+        pos = std::distance(c.begin(), it);
+        res.param = c.substr(pos, c.find("]", pos) - pos);
 
-        std::advance(it, note_position.size() + 1);
+        std::advance(it, res.param.size() + 1);
     }
     else if (std::isspace(*it)) {
         std::advance(it, 1);
     }
-    else {
-        LOG_WARN("Invalid note decorator: {}", c);
-        return {};
-    }
 
-    auto pos = std::distance(c.begin(), it);
-    res->text = c.substr(pos, c.find("}", pos) - pos);
+    pos = std::distance(c.begin(), it);
+    res.text = c.substr(pos, c.find("}", pos) - pos);
+    res.text = util::trim(res.text);
+    res.param = util::trim(res.param);
 
-    res->position = util::trim(res->position);
-    res->text = util::trim(res->text);
+    return res;
+}
+
+std::shared_ptr<decorator> note::from_string(std::string_view c)
+{
+    auto res = std::make_shared<note>();
+    auto toks = res->tokenize(note::label, c);
+
+    res->diagrams = toks.diagrams;
+
+    if (!toks.param.empty())
+        res->position = toks.param;
+
+    res->text = toks.text;
 
     return res;
 }
 
 std::shared_ptr<decorator> skip::from_string(std::string_view c)
 {
-    auto res = std::make_shared<skip>();
-    return res;
+    return std::make_shared<skip>();
 }
 
 std::shared_ptr<decorator> skip_relationship::from_string(std::string_view c)
 {
-    auto res = std::make_shared<skip_relationship>();
-    return res;
+    return std::make_shared<skip_relationship>();
 }
 
 std::shared_ptr<decorator> style::from_string(std::string_view c)
 {
     auto res = std::make_shared<style>();
-    auto it = c.begin();
-    std::advance(it, style::label.size());
+    auto toks = res->tokenize(style::label, c);
 
-    if (*it != '[')
-        return {};
-
-    std::advance(it, 1);
-
-    auto pos = std::distance(c.begin(), it);
-    res->spec = c.substr(pos, c.find("]", pos) - pos);
-
-    res->spec = util::trim(res->spec);
+    res->diagrams = toks.diagrams;
+    res->spec = toks.param;
 
     return res;
 }
@@ -119,18 +143,10 @@ std::shared_ptr<decorator> style::from_string(std::string_view c)
 std::shared_ptr<decorator> aggregation::from_string(std::string_view c)
 {
     auto res = std::make_shared<aggregation>();
-    auto it = c.begin();
-    std::advance(it, aggregation::label.size());
+    auto toks = res->tokenize(aggregation::label, c);
 
-    if (*it != '[')
-        return {};
-
-    std::advance(it, 1);
-
-    auto pos = std::distance(c.begin(), it);
-    res->multiplicity = c.substr(pos, c.find("]", pos) - pos);
-
-    res->multiplicity = util::trim(res->multiplicity);
+    res->diagrams = toks.diagrams;
+    res->multiplicity = toks.param;
 
     return res;
 }

src/uml/decorators.h

@@ -24,10 +24,25 @@
 
 namespace clanguml {
 namespace decorators {
+// \clanguml{label:diagram1,diagram2[param] text}
+struct decorator_toks {
+    std::string label;
+    std::vector<std::string> diagrams;
+    std::string param;
+    std::string text;
+};
 
 struct decorator {
+    std::vector<std::string> diagrams;
+
     virtual ~decorator() = default;
+
     static std::shared_ptr<decorator> from_string(std::string_view c);
+
+    bool applies_to_diagram(std::string name);
+
+protected:
+    decorator_toks tokenize(const std::string &label, std::string_view c);
 };
 
 struct note : public decorator {

tests/t00028/t00028.cc

@@ -13,7 +13,7 @@ class B {
 };
 
 ///
-/// @clanguml{note[bottom] C class note.}
+/// @clanguml{note:t00028_class[bottom] C class note.}
 /// This is class C.
 class C {
 };
@@ -30,6 +30,10 @@ template <typename T> class E {
     T param;
 };
 
+/// \clanguml{note:other_diagram[left] G class note.}
+class G {
+};
+
 /// @clanguml{note[ bottom ] F enum note.}
 enum class F { one, two, three };
 
@@ -44,6 +48,8 @@ class R {
     std::vector<std::shared_ptr<D>> ddd;
 
     E<int> eee;
+
+    G **ggg;
 };
 
 } // namespace t00028

tests/t00028/test_case.h

@@ -59,6 +59,7 @@ note.)";
     REQUIRE_THAT(puml, HasNote(_A("D"), "left", d_note));
     REQUIRE_THAT(puml, HasNote(_A("E<T>"), "left", "E template class note."));
     REQUIRE_THAT(puml, HasNote(_A("F"), "bottom", "F enum note."));
+    REQUIRE_THAT(puml, !HasNote(_A("G"), "left", "G class note."));
     REQUIRE_THAT(puml, HasNote(_A("R"), "right", "R class note."));
 
     save_puml(

tests/test_decorator_parser.cc

@@ -157,3 +157,31 @@ TEST_CASE("Test decorator parser on skiprelationship", "[unit-test]")
 
     CHECK(n1);
 }
+
+TEST_CASE("Test decorator parser on diagram scope", "[unit-test]")
+{
+    std::string comment = R"(
+    \clanguml{note:diagram1,  diagram2,
+    diagram3[left] Note only for diagrams 1, 2 and 3.}
+    )";
+
+    using namespace clanguml::decorators;
+
+    auto decorators = parse(comment);
+
+    CHECK(decorators.size() == 1);
+
+    auto n1 = std::dynamic_pointer_cast<note>(decorators.at(0));
+
+    CHECK(n1);
+    CHECK(n1->diagrams.size() == 3);
+    CHECK(n1->diagrams[0] == "diagram1");
+    CHECK(n1->diagrams[1] == "diagram2");
+    CHECK(n1->diagrams[2] == "diagram3");
+
+    CHECK(n1->position == "left");
+    CHECK(n1->text == "Note only for diagrams 1, 2 and 3.");
+
+    CHECK(n1->applies_to_diagram("diagram2"));
+    CHECK(!n1->applies_to_diagram("diagram4"));
+}