3 files changed, 128 insertions, 0 deletions
diff --git a/core/src/Model/Workflow/Values/BasicValues.cpp b/core/src/Model/Workflow/Values/BasicValues.cpp
new file mode 100644
index 0000000..fd70acd
--- /dev/null
+++ b/core/src/Model/Workflow/Values/BasicValues.cpp
@@ -0,0 +1,76 @@
+#include "BasicValues.hpp"
+
+#include <charconv>
+
+bool NumericValue::IsInstance(const BaseValue* value) {
+	return value->GetKind() == KD_Numeric;
+}
+
+NumericValue::NumericValue()
+	: BaseValue(BaseValue::KD_Numeric) {
+}
+
+std::string NumericValue::GetString() const {
+	char buf[64];
+	auto res = std::to_chars(buf, buf + std::size(buf), mValue);
+	if (res.ec == std::errc()) {
+		return std::string(buf, res.ptr);
+	} else {
+		// TODO larger buffer
+		return "<err>";
+	}
+}
+
+int64_t NumericValue::GetInt() const {
+	return static_cast<int64_t>(mValue);
+}
+
+double NumericValue::GetValue() const {
+	return mValue;
+}
+
+void NumericValue::SetValue(double value) {
+	mValue = value;
+}
+
+bool TextValue::IsInstance(const BaseValue* value) {
+	return value->GetKind() == KD_Text;
+}
+
+TextValue::TextValue()
+	: BaseValue(BaseValue::KD_Text) {
+}
+
+const std::string& TextValue::GetValue() const {
+	return mValue;
+}
+
+void TextValue::SetValue(const std::string& value) {
+	mValue = value;
+}
+
+bool DateTimeValue::IsInstance(const BaseValue* value) {
+	return value->GetKind() == KD_DateTime;
+}
+
+DateTimeValue::DateTimeValue()
+	: BaseValue(BaseValue::KD_DateTime) {
+}
+
+std::string DateTimeValue::GetString() const {
+	namespace chrono = std::chrono;
+	auto t = chrono::system_clock::to_time_t(mValue);
+
+	char data[32];
+	std::strftime(data, sizeof(data), "%Y-%m-%d %H:%M:%S", std::localtime(&t));
+
+	return std::string(data);
+}
+
+const std::chrono::time_point<std::chrono::system_clock>& DateTimeValue::GetValue() const {
+	return mValue;
+}
+
+void DateTimeValue::SetValue(const std::chrono::time_point<std::chrono::system_clock>& value) {
+	mValue = value;
+}
diff --git a/core/src/Model/Workflow/Values/BasicValues.hpp b/core/src/Model/Workflow/Values/BasicValues.hpp
new file mode 100644
index 0000000..a116c8c
--- /dev/null
+++ b/core/src/Model/Workflow/Values/BasicValues.hpp
@@ -0,0 +1,46 @@
+#pragma once
+
+#include "Model/Workflow/Value.hpp"
+
+#include <chrono>
+#include <cstdint>
+#include <string>
+
+class NumericValue : public BaseValue {
+private:
+	double mValue;
+
+public:
+	static bool IsInstance(const BaseValue* value);
+	NumericValue();
+
+	std::string GetString() const;
+	int64_t GetInt() const;
+	double GetValue() const;
+	void SetValue(double value);
+};
+
+class TextValue : public BaseValue {
+private:
+	std::string mValue;
+
+public:
+	static bool IsInstance(const BaseValue* value);
+	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:
+	static bool IsInstance(const BaseValue* value);
+	DateTimeValue();
+
+	std::string GetString() const;
+	const std::chrono::time_point<std::chrono::system_clock>& GetValue() const;
+	void SetValue(const std::chrono::time_point<std::chrono::system_clock>& value);
+};
diff --git a/core/src/Model/Workflow/Values/fwd.hpp b/core/src/Model/Workflow/Values/fwd.hpp
new file mode 100644
index 0000000..24f8119
--- /dev/null
+++ b/core/src/Model/Workflow/Values/fwd.hpp
@@ -0,0 +1,6 @@
+#pragma once
+
+// BasicValues.hpp
+class NumericValue;
+class TextValue;
+class DateTimeValue;