DBC parser initial commit.

tree_node.h

@@ -0,0 +1,109 @@
+#ifndef TREE_NODE_H
+#define TREE_NODE_H
+
+#include <string>
+#include <vector>
+#include <memory>
+#include <cstddef>
+
+#include "frame_info.h"
+#include "signal_info.h"
+
+/**
+ * @brief Type of a tree node.
+ */
+enum class NodeType {
+  Root,
+  Frame,
+  Signal
+};
+
+/**
+ * @brief Tree node for later use in model/view or other hierarchy consumers.
+ */
+class TreeNode {
+  public:
+    /**
+     * @brief Create root node.
+     */
+    TreeNode();
+
+    /**
+     * @brief Create frame node.
+     * @param frame Frame payload.
+     */
+    explicit TreeNode (const FrameInfo &frame);
+
+    /**
+     * @brief Create signal node.
+     * @param signal Signal payload.
+     */
+    explicit TreeNode (const SignalInfo &signal);
+
+    ~TreeNode() = default;
+
+    TreeNode (const TreeNode &) = delete;
+    TreeNode &operator= (const TreeNode &) = delete;
+
+    TreeNode (TreeNode &&) = default;
+    TreeNode &operator= (TreeNode &&) = default;
+
+    /**
+     * @brief Add child node.
+     * @param child Child node to add.
+     */
+    void AddChild (std::unique_ptr<TreeNode> child);
+
+    /**
+     * @brief Get child count.
+     * @return Number of children.
+     */
+    std::size_t GetChildCount() const;
+
+    /**
+     * @brief Get child by index.
+     * @param index Child index.
+     * @return Child pointer or nullptr if index is invalid.
+     */
+    const TreeNode *GetChild (std::size_t index) const;
+
+    /**
+     * @brief Get mutable child by index.
+     * @param index Child index.
+     * @return Child pointer or nullptr if index is invalid.
+     */
+    TreeNode *GetChild (std::size_t index);
+
+    /**
+     * @brief Get node type.
+     * @return Node type.
+     */
+    NodeType GetType() const;
+
+    /**
+     * @brief Get display name.
+     * @return Node name.
+     */
+    const std::string &GetName() const;
+
+    /**
+     * @brief Get frame payload if node is frame.
+     * @return Pointer to frame info or nullptr.
+     */
+    const FrameInfo *GetFrame() const;
+
+    /**
+     * @brief Get signal payload if node is signal.
+     * @return Pointer to signal info or nullptr.
+     */
+    const SignalInfo *GetSignal() const;
+
+  private:
+    NodeType m_type;
+    std::string m_name;
+    std::vector<std::unique_ptr<TreeNode> > m_children;
+    std::unique_ptr<FrameInfo> m_frame;
+    std::unique_ptr<SignalInfo> m_signal;
+};
+
+#endif /* TREE_NODE_H */