Added package diagram layout hints generation

src/config/config.cc

@@ -58,6 +58,22 @@ std::string to_string(const diagram_type t)
     }
 }
 
+std::string to_string(const hint_t t)
+{
+    switch (t) {
+    case hint_t::up:
+        return "up";
+    case hint_t::down:
+        return "down";
+    case hint_t::left:
+        return "left";
+    case hint_t::right:
+        return "right";
+    default:
+        assert(false);
+    }
+}
+
 void plantuml::append(const plantuml &r)
 {
     before.insert(before.end(), r.before.begin(), r.before.end());
@@ -439,10 +455,6 @@ template <> struct convert<layout_hint> {
             rhs.hint = hint_t::right;
             rhs.entity = node["right"].as<std::string>();
         }
-        else if (node["hidden"]) {
-            rhs.hint = hint_t::hidden;
-            rhs.entity = node["hidden"].as<std::string>();
-        }
         else
             return false;
 

src/config/config.h

@@ -65,7 +65,7 @@ struct filter {
     std::vector<common::model::scope_t> scopes;
 };
 
-enum class hint_t { up, down, left, right, hidden };
+enum class hint_t { up, down, left, right };
 
 struct layout_hint {
     hint_t hint;
@@ -75,6 +75,7 @@ struct layout_hint {
 using layout_hints = std::map<std::string, std::vector<layout_hint>>;
 
 std::string to_string(const diagram_type t);
+std::string to_string(const hint_t t);
 
 struct inheritable_diagram_options {
     option<std::vector<std::string>> glob{"glob"};

src/package_diagram/generators/plantuml/package_diagram_generator.cc

@@ -109,6 +109,31 @@ void generator::generate_relationships(
     }
 }
 
+void generator::generate_config_layout_hints(std::ostream &ostr) const
+{
+    const auto &uns = m_config.using_namespace();
+
+    // Generate layout hints
+    for (const auto &[entity, hints] : m_config.layout()) {
+        for (const auto &hint : hints) {
+            std::stringstream hint_str;
+            try {
+                hint_str << m_model.to_alias(ns_relative(uns, entity))
+                         << " -[hidden]"
+                         << clanguml::config::to_string(hint.hint) << "- "
+                         << m_model.to_alias(ns_relative(uns, hint.entity))
+                         << '\n';
+                ostr << hint_str.str();
+            }
+            catch (error::uml_alias_missing &e) {
+                LOG_ERROR("=== Skipping layout hint from {} to {} due "
+                          "to: {}",
+                    entity, hint.entity, e.what());
+            }
+        }
+    }
+}
+
 void generator::generate(const package &p, std::ostream &ostr) const
 {
     const auto &uns = m_config.using_namespace();
@@ -175,6 +200,8 @@ void generator::generate(std::ostream &ostr) const
         ostr << '\n';
     }
 
+    generate_config_layout_hints(ostr);
+
     // Process aliases in any of the puml directives
     for (const auto &b : m_config.puml().after) {
         std::string note{b};

src/package_diagram/generators/plantuml/package_diagram_generator.h

@@ -60,6 +60,8 @@ public:
 
     void generate_relationships(const package &p, std::ostream &ostr) const;
 
+    void generate_config_layout_hints(std::ostream &ostr) const;
+
     void generate(const package &e, std::ostream &ostr) const;
 
     void generate(std::ostream &ostr) const;