[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/Ast/Statements/ImplementSt.hpp

@@ -0,0 +1,46 @@
+#pragma once
+#include <Ast/functionParameters.hpp>
+#include <Ast/Statements/FunctionDefSt.hpp>
+#include <Ast/astBase.hpp>
+
+namespace Fig::Ast
+{
+    /*
+    
+    impl Readable for File
+    {
+        read() -> String
+        {
+            ...
+    }
+    
+    */
+    struct ImplementMethod
+    {
+        FString name;
+        FunctionParameters paras;
+        BlockStatement body;
+    };
+
+    class ImplementAst final : public StatementAst
+    {
+    public:
+        FString interfaceName;
+        FString structName;
+
+        std::vector<ImplementMethod> methods;
+
+        ImplementAst()
+        {
+            type = AstType::ImplementSt;
+        }
+
+        ImplementAst(FString _interfaceName, FString _structName, std::vector<ImplementMethod> _methods) :
+            interfaceName(std::move(_interfaceName)), structName(std::move(_structName)), methods(std::move(_methods))
+        {
+            type = AstType::ImplementSt;
+        }
+    };
+
+    using Implement = std::shared_ptr<ImplementAst>;
+};