From fc916c10de72262fd5d96cdd3d73dbe232f584d8 Mon Sep 17 00:00:00 2001
From: Sanchime <sanchime.qq.com>
Date: Fri, 13 May 2022 22:18:29 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E5=87=BD=E6=95=B0=E5=BC=8F?=
 =?UTF-8?q?=E5=BC=82=E5=B8=B8=E7=B1=BB?=
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---
 Sanchime.Functional/Products/Exceptional.cs | 37 +++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Sanchime.Functional/Products/Exceptional.cs

diff --git a/Sanchime.Functional/Products/Exceptional.cs b/Sanchime.Functional/Products/Exceptional.cs
new file mode 100644
index 0000000..4dd4f7a
--- /dev/null
+++ b/Sanchime.Functional/Products/Exceptional.cs
@@ -0,0 +1,37 @@
+namespace Sanchime.Functional.Products;
+
+public readonly struct Exceptional<TValue>
+{
+    internal Exception _exception { get; }
+
+    internal TValue _value { get; }
+
+    public bool Success => _exception is null;
+
+    public bool Exception => !Success;
+
+    internal Exceptional(Exception exception)
+    {
+        if (exception == null)
+        {
+            throw new ArgumentNullException(nameof(exception));
+        }
+        (_exception, _value) = (exception, default!);
+    }
+
+    internal Exceptional(TValue right)
+        => (_value, _exception) = (right, default!);
+
+    public static implicit operator Exceptional<TValue>(Exception left)
+        => new(left);
+
+    public static implicit operator Exceptional<TValue>(TValue right)
+        => new(right);
+
+    public TRight Match<TRight>(Func<Exception, TRight> Exception, Func<TValue, TRight> Success)
+        => this.Exception ? Exception(_exception) : Success(_value);
+    
+    public override string ToString()
+        => Match(e => $"Exception({e.Message})", v => $"Success({v})");
+    
+}