Added PlantUML directives prepending and appending

src/puml/sequence_diagram_generator.h

@@ -0,0 +1,165 @@
+#pragma once
+
+#include "config/config.h"
+#include "uml/sequence_diagram_model.h"
+#include "uml/sequence_diagram_visitor.h"
+#include "util/util.h"
+
+#include <glob/glob.hpp>
+
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+#include <sstream>
+
+namespace clanguml {
+namespace generators {
+namespace sequence_diagram {
+namespace puml {
+
+using diagram_model = clanguml::model::sequence_diagram::diagram;
+using diagram_config = clanguml::config::sequence_diagram::diagram;
+using clanguml::model::sequence_diagram::activity;
+using clanguml::model::sequence_diagram::message;
+using clanguml::model::sequence_diagram::message_t;
+using clanguml::visitor::sequence_diagram::tu_context;
+using namespace clanguml::util;
+
+class generator {
+public:
+    generator(clanguml::config::sequence_diagram &config, diagram_model &model)
+        : m_config(config)
+        , m_model(model)
+    {
+    }
+
+    std::string to_string(message_t r) const
+    {
+        switch (r) {
+            case message_t::kCall:
+                return "->";
+            case message_t::kReturn:
+                return "<--";
+            default:
+                return "";
+        }
+    }
+
+    void generate_call(const message &m, std::ostream &ostr) const
+    {
+        const auto from = namespace_relative(m_config.using_namespace, m.from);
+        const auto to = namespace_relative(m_config.using_namespace, m.to);
+
+        ostr << '"' << from << "\" "
+             << "->"
+             << " \"" << to << "\" : " << m.message << "()" << std::endl;
+    }
+
+    void generate_return(const message &m, std::ostream &ostr) const
+    {
+        if ((m.from != m.to) && (m.return_type != "void")) {
+            const auto from =
+                namespace_relative(m_config.using_namespace, m.from);
+            const auto to = namespace_relative(m_config.using_namespace, m.to);
+
+            ostr << '"' << to << "\" "
+                 << "-->"
+                 << " \"" << from << "\"" << std::endl;
+        }
+    }
+
+    void generate_activity(const activity &a, std::ostream &ostr) const
+    {
+        for (const auto &m : a.messages) {
+            const auto to = namespace_relative(m_config.using_namespace, m.to);
+            generate_call(m, ostr);
+            ostr << "activate " << '"' << to << '"' << std::endl;
+            if (m_model.sequences.find(m.to_usr) != m_model.sequences.end())
+                generate_activity(m_model.sequences[m.to_usr], ostr);
+            generate_return(m, ostr);
+            ostr << "deactivate " << '"' << to << '"' << std::endl;
+        }
+    }
+
+    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 &a : m_config.puml.after)
+            ostr << a << std::endl;
+
+        ostr << "@enduml" << std::endl;
+    }
+
+    friend std::ostream &operator<<(std::ostream &os, const generator &g);
+
+private:
+    clanguml::config::sequence_diagram &m_config;
+    clanguml::model::sequence_diagram::diagram &m_model;
+};
+
+std::ostream &operator<<(std::ostream &os, const generator &g)
+{
+    g.generate(os);
+    return os;
+}
+}
+
+clanguml::model::sequence_diagram::diagram generate(
+    clanguml::cx::compilation_database &db, const std::string &name,
+    clanguml::config::sequence_diagram &diagram)
+{
+    spdlog::info("Generating diagram {}.puml", name);
+    clanguml::model::sequence_diagram::diagram d;
+    d.name = name;
+
+    // Get all translation units matching the glob from diagram
+    // configuration
+    std::vector<std::filesystem::path> translation_units{};
+    for (const auto &g : diagram.glob) {
+        spdlog::debug("Processing glob: {}", g);
+        const auto matches = glob::glob(g);
+        std::copy(matches.begin(), matches.end(),
+            std::back_inserter(translation_units));
+    }
+
+    // Process all matching translation units
+    for (const auto &tu_path : translation_units) {
+        spdlog::debug("Processing translation unit: {}",
+            std::filesystem::canonical(tu_path).c_str());
+
+        auto tu = db.parse_translation_unit(tu_path);
+
+        auto cursor = clang_getTranslationUnitCursor(tu);
+
+        if (clang_Cursor_isNull(cursor)) {
+            spdlog::debug("CURSOR IS NULL");
+        }
+
+        spdlog::debug("Cursor kind: {}",
+            clang_getCString(clang_getCursorKindSpelling(cursor.kind)));
+        spdlog::debug("Cursor name: {}",
+            clang_getCString(clang_getCursorDisplayName(cursor)));
+
+        clanguml::visitor::sequence_diagram::tu_context ctx(d);
+        auto res = clang_visitChildren(cursor,
+            clanguml::visitor::sequence_diagram::translation_unit_visitor,
+            &ctx);
+
+        spdlog::debug("Processing result: {}", res);
+
+        clang_suspendTranslationUnit(tu);
+    }
+
+    return d;
+}
+}
+}
+}
+