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/Value.hpp | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

(limited to 'core/src/Model/Workflow/Value.hpp')

diff --git a/core/src/Model/Workflow/Value.hpp b/core/src/Model/Workflow/Value.hpp
index 8b3e63a..ff62d43 100644
--- a/core/src/Model/Workflow/Value.hpp
+++ b/core/src/Model/Workflow/Value.hpp
@@ -5,6 +5,7 @@
 
 #include <iosfwd>
 #include <memory>
+#include <string>
 
 class BaseValue
 {
@@ -14,6 +15,12 @@ public:
 		KD_Numeric,
 		KD_Text,
 		KD_DateTime,
+		KD_DatabaseRowId,
+
+		KD_BaseObject,
+		KD_SaleDatabaseRow,
+		KD_PurchaseDatabaseRow,
+		KD_BaseObjectLast = KD_PurchaseDatabaseRow,
 
 		/// An unspecified type, otherwise known as "any" in some contexts.
 		InvalidKind,
@@ -34,6 +41,8 @@ public:
 	static const char* Format(Kind kind);
 	static std::unique_ptr<BaseValue> CreateByKind(Kind kind);
 
+	static bool IsInstance(const BaseValue* value);
+
 	BaseValue(Kind kind);
 	virtual ~BaseValue() = default;
 
@@ -51,3 +60,32 @@ public:
 	virtual void ReadFrom(std::istream& stream);
 	virtual void WriteTo(std::ostream& stream);
 };
+
+class BaseObjectDescription
+{
+public:
+	struct Property
+	{
+		std::string Name;
+		BaseValue::Kind Kind;
+		bool Mutatable = true;
+	};
+
+public:
+	std::vector<Property> Properties;
+};
+
+class BaseObjectValue : public BaseValue
+{
+public:
+	/// \param kind A value kind enum, within the range of KD_BaseObject and KD_BaseObjectLast (both inclusive).
+	static const BaseObjectDescription& QueryObjectInfo(Kind kind);
+
+	static bool IsInstance(const BaseValue* value);
+	BaseObjectValue(Kind kind);
+
+	const BaseObjectDescription& GetObjectDescription() const;
+
+	virtual const BaseValue* GetProperty(int idx) const = 0;
+	virtual bool SetProperty(int idx, std::unique_ptr<BaseValue> value) = 0;
+};
-- 
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