[Fix] 修复struct内部函数无法访问内部成员的问题

[Feat] 拓展构建

include/context.hpp

@@ -56,6 +56,11 @@ namespace Fig
             structTypeNames.insert(c.structTypeNames.begin(), c.structTypeNames.end());
         }
 
+        std::unordered_map<size_t, Function> getFunctions() const
+        {
+            return functions;
+        }
+
         std::optional<ObjectPtr> get(const FString &name)
         {
             auto it = variables.find(name);
@@ -125,6 +130,21 @@ namespace Fig
                 throw RuntimeError(FStringView(std::format("Variable '{}' not defined", name.toBasicString())));
             }
         }
+        void _update(const FString &name, const Object &value)
+        {
+            if (variables.contains(name))
+            {
+                variables[name] = std::make_shared<Object>(value);
+            }
+            else if (parent != nullptr)
+            {
+                parent->set(name, value);
+            }
+            else
+            {
+                throw RuntimeError(FStringView(std::format("Variable '{}' not defined", name.toBasicString())));
+            }
+        }
         void def(const FString &name, const TypeInfo &ti, AccessModifier am, const ObjectPtr &value = Object::getNullInstance())
         {
             if (containsInThisScope(name))