[Feat] 详细区分左值(LvObject)与右值(RvObject -> ObjectPtr)

[Impl] 重构evaluator.cpp + hpp 全部
[Feat] 增加对于IndexExpr的解析
[Fix][Impl] 现在点运算符不由BinaryExpr负责,增加MemberExpr,单独实现解析
[Impl] 项目目录全部翻修, src/目录下单独文件夹放置每一个模块

src/Value/value.cpp

@@ -0,0 +1,40 @@
+#include <Value/value.hpp>
+#include <Context/context.hpp>
+
+// #include <iostream>
+
+namespace Fig
+{
+    std::map<FString, size_t> TypeInfo::typeMap = {};
+
+    TypeInfo::TypeInfo() :                              // only allow use in evaluate time !! <---- dynamic type system requirement
+        id(1), name(FString(u8"Any")) {}
+    TypeInfo::TypeInfo(FString _name, bool reg)
+    {
+        static size_t id_count = 0;
+        name = std::move(_name);
+        // std::cerr << "TypeInfo constructor called for type name: " << name.toBasicString() << "\n";
+        if (reg)
+        {
+            typeMap[name] = ++id_count;
+            id = id_count;
+        }
+        else
+        {
+            id = typeMap.at(name); // may throw
+        }
+    }
+    
+    const TypeInfo ValueType::Any(FString(u8"Any"), true);           // id: 1
+    const TypeInfo ValueType::Null(FString(u8"Null"), true);         // id: 2
+    const TypeInfo ValueType::Int(FString(u8"Int"), true);           // id: 3
+    const TypeInfo ValueType::String(FString(u8"String"), true);     // id: 4
+    const TypeInfo ValueType::Bool(FString(u8"Bool"), true);         // id: 5
+    const TypeInfo ValueType::Double(FString(u8"Double"), true);     // id: 6
+    const TypeInfo ValueType::Function(FString(u8"Function"), true); // id: 7
+    const TypeInfo ValueType::StructType(FString(u8"StructType"), true);     // id: 8
+    const TypeInfo ValueType::StructInstance(FString(u8"StructInstance"), true); // id: 9
+    const TypeInfo ValueType::List(FString(u8"List"), true); // id: 10
+    const TypeInfo ValueType::Map(FString(u8"Map"), true); // id: 11
+    const TypeInfo ValueType::Tuple(FString(u8"Tuple"), true); // id: 12
+} // namespace Fig