#202 - type use iequatable

Author: Stepami

src/Domain/HydraScript.Domain.IR/Types/Any.cs

@@ -5,7 +5,7 @@ namespace HydraScript.Domain.IR.Types;
 [ExcludeFromCodeCoverage]
 public class Any() : Type("any")
 {
-    public override bool Equals(object? obj) => true;
+    public override bool Equals(Type? obj) => true;
 
     public override int GetHashCode() => "any".GetHashCode();
 }

src/Domain/HydraScript.Domain.IR/Types/ArrayType.cs

@@ -15,7 +15,7 @@ public override void ResolveReference(
             Type.ResolveReference(reference, refId, visited);
     }
 
-    public override bool Equals(object? obj)
+    public override bool Equals(Type? obj)
     {
         if (obj is ArrayType that)
             return Equals(Type, that.Type);

src/Domain/HydraScript.Domain.IR/Types/NullType.cs

@@ -2,7 +2,7 @@ namespace HydraScript.Domain.IR.Types;
 
 public class NullType() : Type("null")
 {
-    public override bool Equals(object? obj) =>
+    public override bool Equals(Type? obj) =>
         obj is ObjectType or NullableType or NullType or Any;
 
     public override int GetHashCode() =>

src/Domain/HydraScript.Domain.IR/Types/NullableType.cs

@@ -15,12 +15,12 @@ public override void ResolveReference(
             Type.ResolveReference(reference, refId, visited);
     }
 
-    public override bool Equals(object? obj)
+    public override bool Equals(Type? obj)
     {
         if (obj is NullableType that)
             return Equals(Type, that.Type);
 
-        return obj is NullType or Any || (obj is Type type && type.Equals(Type));
+        return obj is NullType or Any || (obj is not null && obj.Equals(Type));
     }
 
     public override int GetHashCode() =>

src/Domain/HydraScript.Domain.IR/Types/ObjectType.cs

@@ -69,7 +69,7 @@ public override void ResolveReference(
                 this[key]!.ResolveReference(reference, refId, visited);
     }
 
-    public override bool Equals(object? obj)
+    public override bool Equals(Type? obj)
     {
         if (obj is ObjectType that)
             return ReferenceEquals(this, that) ||

src/Domain/HydraScript.Domain.IR/Types/Type.cs

@@ -1,6 +1,6 @@
 namespace HydraScript.Domain.IR.Types;
 
-public class Type
+public class Type : IEquatable<Type>
 {
     private readonly string _name = string.Empty;
 
@@ -18,14 +18,16 @@ public virtual void ResolveReference(
     {
     }
 
-    public override bool Equals(object? obj) =>
+    public virtual bool Equals(Type? obj) =>
         obj switch
         {
             Any => true,
-            Type that => _name == that._name,
+            not null => _name == obj._name,
             _ => false
         };
 
+    public override bool Equals(object? obj) => Equals(obj as Type);
+
     public override int GetHashCode() =>
         _name.GetHashCode();