1 files changed, 64 insertions, 0 deletions
diff --git a/core/src/Model/EvaluatedValue.hpp b/core/src/Model/EvaluatedValue.hpp
new file mode 100644
index 0000000..838fc39
--- /dev/null
+++ b/core/src/Model/EvaluatedValue.hpp
@@ -0,0 +1,64 @@
+#pragma once
+
+#include <chrono>
+#include <cstdint>
+#include <string>
+
+class BaseValue {
+public:
+	enum Type {
+		NumericType,
+		TextType,
+		DateTimeType,
+
+		/// An unspecified type, otherwise known as "any" in some contexts.
+		InvalidType,
+		TypeCount = InvalidType,
+	};
+
+private:
+	Type mType;
+
+public:
+	BaseValue(Type type);
+	virtual ~BaseValue() = default;
+
+	BaseValue(const BaseValue&) = delete;
+	BaseValue& operator=(const BaseValue&) = delete;
+	BaseValue(BaseValue&&) = default;
+	BaseValue& operator=(BaseValue&&) = default;
+
+	Type GetType() const;
+};
+
+class NumericValue : public BaseValue {
+private:
+	double mValue;
+
+public:
+	NumericValue();
+
+	int64_t GetInt() const;
+	double GetValue() const;
+	void SetValue(double value);
+};
+
+class TextValue : public BaseValue {
+private:
+	std::string mValue;
+
+public:
+	TextValue();
+	const std::string& GetValue() const;
+	void SetValue(const std::string& value);
+};
+
+class DateTimeValue : public BaseValue {
+private:
+	std::chrono::time_point<std::chrono::system_clock> mValue;
+
+public:
+	DateTimeValue();
+	const std::chrono::time_point<std::chrono::system_clock>& GetValue() const;
+	void SetValue(const std::chrono::time_point<std::chrono::system_clock>& value);
+};