From 7a325e1b3be04bc54941431458903022da1643ac Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Thu, 3 Jun 2021 10:06:55 -0700
Subject: Create template inheritance hierarchy, object value RTTI system

---
 core/src/Model/Workflow/Values/Basic.cpp | 117 +++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 core/src/Model/Workflow/Values/Basic.cpp

(limited to 'core/src/Model/Workflow/Values/Basic.cpp')

diff --git a/core/src/Model/Workflow/Values/Basic.cpp b/core/src/Model/Workflow/Values/Basic.cpp
new file mode 100644
index 0000000..d6a2395
--- /dev/null
+++ b/core/src/Model/Workflow/Values/Basic.cpp
@@ -0,0 +1,117 @@
+#include "Basic.hpp"
+
+#include <charconv>
+#include <cmath>
+#include <limits>
+
+bool NumericValue::IsInstance(const BaseValue* value)
+{
+	return value->GetKind() == KD_Numeric;
+}
+
+NumericValue::NumericValue()
+	: BaseValue(BaseValue::KD_Numeric)
+{
+}
+
+template <class T, int kMaxSize>
+static std::string NumberToString(T value)
+{
+	char buf[kMaxSize];
+
+#if PLATFORM_WIN32
+	auto res = std::to_chars(buf, buf + kMaxSize, value);
+	if (res.ec == std::errc()) {
+		return std::string(buf, res.ptr);
+	} else {
+		return "<err>";
+	}
+#else
+	// TODO libstdc++ doesn't have floating point charconv yet
+	return std::to_string(value);
+#endif
+}
+
+std::string NumericValue::GetTruncatedString() const
+{
+	constexpr auto kMaxSize = std::numeric_limits<int64_t>::digits10;
+	return ::NumberToString<int64_t, kMaxSize>((int64_t)mValue);
+}
+
+std::string NumericValue::GetRoundedString() const
+{
+	constexpr auto kMaxSize = std::numeric_limits<int64_t>::digits10;
+	return ::NumberToString<int64_t, kMaxSize>((int64_t)std::round(mValue));
+}
+
+std::string NumericValue::GetString() const
+{
+	constexpr auto kMaxSize = std::numeric_limits<double>::max_digits10;
+	return ::NumberToString<double, kMaxSize>(mValue);
+}
+
+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;
+}
-- 
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