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2 files changed, 83 insertions, 0 deletions

diff --git a/include/cru/toml/TomlDocument.hpp b/include/cru/toml/TomlDocument.hpp
new file mode 100644
index 00000000..9b549daa
--- /dev/null
+++ b/include/cru/toml/TomlDocument.hpp
@@ -0,0 +1,54 @@
+#pragma once
+
+#include "cru/common/Base.hpp"
+#include "cru/common/String.hpp"
+
+#include <optional>
+#include <unordered_map>
+
+namespace cru::toml {
+class TomlSection {
+ public:
+  CRU_DEFAULT_CONSTRUCTOR_DESTRUCTOR(TomlSection)
+  CRU_DEFAULT_COPY(TomlSection)
+  CRU_DEFAULT_MOVE(TomlSection)
+
+ public:
+  std::optional<String> GetValue(const String& key) const;
+  void SetValue(const String& key, String value);
+  void DeleteValue(const String& key);
+
+  auto begin() { return values_.begin(); }
+  auto end() { return values_.end(); }
+  auto begin() const { return values_.begin(); }
+  auto end() const { return values_.end(); }
+  auto cbegin() const { return values_.cbegin(); }
+  auto cend() const { return values_.cend(); }
+
+ private:
+  std::unordered_map<String, String> values_;
+};
+
+class TomlDocument {
+ public:
+  CRU_DEFAULT_CONSTRUCTOR_DESTRUCTOR(TomlDocument)
+  CRU_DEFAULT_COPY(TomlDocument)
+  CRU_DEFAULT_MOVE(TomlDocument)
+
+ public:
+  TomlSection* GetSection(const String& name);
+  const TomlSection* GetSection(const String& name) const;
+  void SetSection(const String& name, TomlSection section);
+  void DeleteSection(const String& name);
+
+  auto begin() { return sections_.begin(); }
+  auto end() { return sections_.end(); }
+  auto begin() const { return sections_.begin(); }
+  auto end() const { return sections_.end(); }
+  auto cbegin() const { return sections_.cbegin(); }
+  auto cend() const { return sections_.cend(); }
+
+ private:
+  std::unordered_map<String, TomlSection> sections_;
+};
+}  // namespace cru::toml
diff --git a/include/cru/toml/TomlParser.hpp b/include/cru/toml/TomlParser.hpp
new file mode 100644
index 00000000..b5bcaa0b
--- /dev/null
+++ b/include/cru/toml/TomlParser.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include "cru/toml/TomlDocument.hpp"
+
+#include <optional>
+
+namespace cru::toml {
+class TomlParser {
+ public:
+  explicit TomlParser(String input);
+
+  CRU_DELETE_COPY(TomlParser)
+  CRU_DELETE_MOVE(TomlParser)
+
+  ~TomlParser();
+
+ public:
+  TomlDocument Parse();
+
+ private:
+  // The document is empty to begin with.
+  void DoParse(TomlDocument& document);
+
+ private:
+  String input_;
+
+  std::optional<TomlDocument> cache_;
+};
+}  // namespace cru::toml