Added handling of start_from directive for USR

.clanguml-sequence.example

@@ -4,13 +4,19 @@ diagrams:
   main_sequence_diagram:
     type: sequence
     glob:
-      - t00001/t00001.cc
-    using_namespace: clanguml::t00001
+      - src/main.cc
+    using_namespace:
+      - ""
     start_from:
-        file: t00001/t00001.cc
-        line: 20
-    classes:
-      - A
-      - B
-    puml:
-      - 'note top of diagram: Aggregate template'
+      - usr: "c:@F@main#I#**1C#"
+    include:
+      namespace:
+        - clanguml
+    exclude:
+      namespace:
+        - std
+    plantuml:
+      before:
+        - "' main test sequence diagram"
+      after:
+        - "' end"

src/config/config.h

@@ -31,6 +31,9 @@ struct source_location {
     using usr = std::string;
     using marker = std::string;
     using file = std::pair<std::string, int>;
+    // std::variant requires unique types, so we cannot add
+    // marker here, we need sth like boost::mp_unique
+    // type function
     using variant = std::variant<usr, file>;
 };
 
@@ -100,11 +103,27 @@ template <> struct convert<class_diagram> {
     }
 };
 
-template <> struct convert<source_location::variant> {
-    static bool decode(const Node &node, source_location::variant &rhs)
+template <> struct convert<std::vector<source_location::variant>> {
+    static bool decode(
+        const Node &node, std::vector<source_location::variant> &rhs)
     {
-        if(node["usr"])
-            rhs = node["usr"].as<source_location::usr>();
+        for (auto it = node.begin(); it != node.end(); ++it) {
+            const YAML::Node &n = *it;
+            if (n["usr"]) {
+                rhs.emplace_back(n["usr"].as<source_location::usr>());
+            }
+            else if (n["marker"]) {
+                rhs.emplace_back(n["marker"].as<source_location::marker>());
+            }
+            else if (n["file"] && n["line"]) {
+                rhs.emplace_back(std::make_pair(
+                    n["file"].as<std::string>(), n["line"].as<int>()));
+            }
+            else {
+                return false;
+            }
+        }
+
         return true;
     }
 };

src/puml/sequence_diagram_generator.h

@@ -19,6 +19,7 @@ namespace puml {
 
 using diagram_model = clanguml::model::sequence_diagram::diagram;
 using diagram_config = clanguml::config::sequence_diagram::diagram;
+using clanguml::config::source_location;
 using clanguml::model::sequence_diagram::activity;
 using clanguml::model::sequence_diagram::message;
 using clanguml::model::sequence_diagram::message_t;
@@ -83,14 +84,22 @@ public:
 
     void generate(std::ostream &ostr) const
     {
-        auto start_from = "c:@N@clanguml@N@t00001@F@tmain#";
         ostr << "@startuml" << std::endl;
 
         for (const auto &b : m_config.puml.before)
             ostr << b << std::endl;
 
-        generate_activity(m_model.sequences[start_from], ostr);
-
+        for (const auto &sf : m_config.start_from) {
+            std::string start_from;
+            if (std::holds_alternative<source_location::usr>(sf)) {
+                start_from = std::get<source_location::usr>(sf);
+            }
+            else {
+                // TODO: Add support for other sequence start location types
+                continue;
+            }
+            generate_activity(m_model.sequences[start_from], ostr);
+        }
         for (const auto &a : m_config.puml.after)
             ostr << a << std::endl;
 

tests/t00001/.clanguml

@@ -10,7 +10,7 @@ diagrams:
         - clanguml::t00001
     exclude:
       namespace:
-        - std
+        - clanguml::t00001::detail
     using_namespace:
       - clanguml::t00001
     start_from:

tests/t00001/t00001.cc

@@ -1,13 +1,26 @@
-#include <vector>
 #include <algorithm>
 #include <numeric>
+#include <vector>
 
 namespace clanguml {
 namespace t00001 {
 
+namespace detail {
+struct C {
+    auto add(int x, int y)
+    {
+        return x + y;
+    }
+};
+}
+
 class A {
 public:
-    int add(int x, int y) { return x + y; }
+    A()
+    {
+    }
+
+    int add(int x, int y) { return m_c.add(x, y); }
 
     int add3(int x, int y, int z)
     {
@@ -21,6 +34,9 @@ public:
     }
 
     void log_result(int r) {}
+
+private:
+    detail::C m_c{};
 };
 
 class B {