combine functions fixes

include/type_nodes.hpp

@@ -56,10 +56,14 @@ public:
       : Node(node), name_(identifier), parameters_(std::move(parameters)),
         is_on_heap_(is_on_heap), modifier_(modifier) {}
 
+  //
+
   Identifier *get_name() { return &name_; }
 
   const Identifier *get_name() const { return &name_; }
 
+  //
+
   size_t get_parametrs_size() const { return parameters_.size(); }
 
   Type *get_parameter(size_t id) { return parameters_.at(id).get(); }
@@ -68,10 +72,34 @@ public:
     return parameters_.at(id).get();
   }
 
+  //
+
   bool is_on_heap() const { return is_on_heap_; }
 
   Modifier get_modifier() const { return modifier_; }
 
+  //
+
+  bool operator==(const Type &other_type) const {
+    if (name_ != other_type.name_ || is_on_heap_ != other_type.is_on_heap_ ||
+        modifier_ != other_type.modifier_ ||
+        parameters_.size() != other_type.parameters_.size()) {
+      return false;
+    }
+
+    for (size_t i = 0; i < parameters_.size(); ++i) {
+      if (*parameters_[i].get() != *other_type.parameters_[i].get()) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+  bool operator!=(const Type &other_type) const {
+    return !(*this == other_type);
+  }
+
 private:
   Identifier name_;
   std::vector<TypeProxy> parameters_;