[VER] 0.3.3-alpha

[FEAT] interface + impl 支持！ Duck Typing + 严格的检查让语言健壮
[FEAT][IMPL] 增加辅助函数 isTypeMatch等
[IMPL] TypeInfo构造函数FString 现在 explicit

src/Value/interface.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <Ast/Statements/InterfaceDefSt.hpp>
+#include <Value/Type.hpp>
+
+#include <vector>
+
+namespace Fig
+{
+    struct InterfaceType
+    {
+        TypeInfo type;
+        std::vector<Ast::InterfaceMethod> methods;
+
+        bool operator==(const InterfaceType &other) const
+        {
+            return type == other.type; // only compare type info (chain -> typeinfo.id)
+        }
+    };
+}