1 files changed, 63 insertions, 0 deletions
diff --git a/include/cru/common/PropertyTree.h b/include/cru/common/PropertyTree.h
new file mode 100644
index 00000000..54e185b9
--- /dev/null
+++ b/include/cru/common/PropertyTree.h
@@ -0,0 +1,63 @@
+#pragma once
+
+#include "Base.h"
+#include "String.h"
+
+#include <unordered_map>
+
+namespace cru {
+class PropertyTree;
+
+class CRU_BASE_API PropertySubTreeRef {
+ public:
+  static String CombineKey(StringView left, StringView right);
+
+  explicit PropertySubTreeRef(PropertyTree* tree, String path = {});
+
+  CRU_DEFAULT_COPY(PropertySubTreeRef);
+  CRU_DEFAULT_MOVE(PropertySubTreeRef);
+
+  CRU_DEFAULT_DESTRUCTOR(PropertySubTreeRef);
+
+ public:
+  PropertyTree* GetTree() const { return tree_; }
+
+  String GetPath() const { return path_; }
+  void SetPath(String path) { path_ = std::move(path); }
+
+  PropertySubTreeRef GetParent() const;
+  PropertySubTreeRef GetChild(const String& key) const;
+
+  String GetValue(const String& key) const;
+  void SetValue(const String& key, String value);
+  void DeleteValue(const String& key);
+
+ private:
+  PropertyTree* tree_;
+  String path_;
+};
+
+class CRU_BASE_API PropertyTree {
+ public:
+  static String CombineKey(StringView left, StringView right);
+
+  PropertyTree() = default;
+  explicit PropertyTree(std::unordered_map<String, String> values);
+
+  CRU_DELETE_COPY(PropertyTree);
+  CRU_DELETE_MOVE(PropertyTree);
+
+  CRU_DEFAULT_DESTRUCTOR(PropertyTree);
+
+ public:
+  String GetValue(const String& key) const;
+  void SetValue(const String& key, String value);
+  void DeleteValue(const String& key);
+
+  PropertySubTreeRef GetSubTreeRef(const String& path);
+
+ private:
+  std::unordered_map<String, String> values_;
+};
+
+}  // namespace cru