Add Empty genereation for Guid and Ulid

Cysharp · Feb 7, 2022 · b11711a · b11711a
1 parent 69f0e96
commit b11711a
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Showing 4 changed files with 25 additions and 9 deletions.
diff --git a/README.md b/README.md
@@ -227,9 +227,10 @@ public static bool operator false(Foo x) => !x.value;
 public static bool operator !(Foo x) => !x.value;
 ```
 
-> When type is Guid or [Ulid](https://github.com/Cysharp/Ulid), also implements `New()` and `New***()` static operator.
+> When type is Guid or [Ulid](https://github.com/Cysharp/Ulid), also implements `Empty, New()` and `New***()` static operator.
 
 ```csharp
+public static readonly GroupId Empty;
 public static GroupId New();
 public static GroupId NewGroupId();
 ```

diff --git a/sandbox/ConsoleApp/Program.cs b/sandbox/ConsoleApp/Program.cs
@@ -8,8 +8,11 @@
 
 
 
-Console.WriteLine(new Sample.Hp(100).ToString());
-Console.WriteLine(BarId.New());
+var id1 = FooId.Empty;
+var id2 = new FooId(Guid.Empty);
+
+
+Console.WriteLine(id1 == id2);
 
 [UnitOf(typeof(int))]
 public readonly partial struct NoNamespace
@@ -37,10 +40,13 @@ void Foo()
 
             _ = FooId.NewFooId();
             Guid.NewGuid();
+            //public static readonly Guid Empty;
+            //Guid.Empty
 
+            // public static readonly Ulid Empty = default(Ulid);
+            // Ulid.Empty
 
 
-
         }
 
     }
@@ -88,10 +94,7 @@ static void Foo(short x)
 
         static void Main(string[] args)
         {
-            new SampleValidate(99999);
-
 
-            default(StreetAddress).AsPrimitive();
 
         }
     }

diff --git a/src/UnitGenerator/CodeTemplate.cs b/src/UnitGenerator/CodeTemplate.cs
@@ -122,7 +122,11 @@ public virtual string TransformText()
             this.Write(this.ToStringHelper.ToStringWithCulture(Name));
             this.Write(" y)\r\n        {\r\n            return !x.value.Equals(y.value);\r\n        }\r\n\r\n");
  if (Type == "Guid" || Type == "System.Guid") { 
-            this.Write("        public static ");
+            this.Write("        public static readonly ");
+            this.Write(this.ToStringHelper.ToStringWithCulture(Name));
+            this.Write(" Empty = default(");
+            this.Write(this.ToStringHelper.ToStringWithCulture(Name));
+            this.Write(");\r\n\r\n        public static ");
             this.Write(this.ToStringHelper.ToStringWithCulture(Name));
             this.Write(" New()\r\n        {\r\n            return new ");
             this.Write(this.ToStringHelper.ToStringWithCulture(Name));
@@ -136,7 +140,11 @@ public virtual string TransformText()
  } 
             this.Write("\r\n");
  if (Type == "Ulid" || Type == "System.Ulid") { 
-            this.Write("        public static ");
+            this.Write("        public static readonly ");
+            this.Write(this.ToStringHelper.ToStringWithCulture(Name));
+            this.Write(" Empty = default(");
+            this.Write(this.ToStringHelper.ToStringWithCulture(Name));
+            this.Write(");\r\n        \r\n        public static ");
             this.Write(this.ToStringHelper.ToStringWithCulture(Name));
             this.Write(" New()\r\n        {\r\n            return new ");
             this.Write(this.ToStringHelper.ToStringWithCulture(Name));

diff --git a/src/UnitGenerator/CodeTemplate.tt b/src/UnitGenerator/CodeTemplate.tt
@@ -102,6 +102,8 @@ namespace <#= Namespace #>
         }
 
 <# if (Type == "Guid" || Type == "System.Guid") { #>
+        public static readonly <#= Name #> Empty = default(<#= Name #>);
+
         public static <#= Name #> New()
         {
             return new <#= Name #>(Guid.NewGuid());
@@ -115,6 +117,8 @@ namespace <#= Namespace #>
 <# } #>
 
 <# if (Type == "Ulid" || Type == "System.Ulid") { #>
+        public static readonly <#= Name #> Empty = default(<#= Name #>);
+
         public static <#= Name #> New()
         {
             return new <#= Name #>(Ulid.NewUlid());