From 0d5b7c42e4c4999b803b7efefb9a3112fb39424b Mon Sep 17 00:00:00 2001
From: "Tristan B. Velloza Kildaire" <deavmi@redxen.eu>
Date: Sat, 18 Nov 2023 11:11:37 +0200
Subject: [PATCH] Exceptions

- Added `DanteException`
- Added `ProtocolException`
- Added `CommandException`
---
 source/dante/exceptions.d | 43 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 source/dante/exceptions.d

diff --git a/source/dante/exceptions.d b/source/dante/exceptions.d
new file mode 100644
index 0000000..bd2885f
--- /dev/null
+++ b/source/dante/exceptions.d
@@ -0,0 +1,43 @@
+module dante.exceptions;
+
+public abstract class DanteException : Exception
+{
+    this(string msg)
+    {
+        super(msg);
+    }
+}
+
+public class CommandException : DanteException
+{
+    this(string msg)
+    {
+        super(msg);
+    }
+}
+
+import std.conv : to;
+
+public class ProtocolException : DanteException
+{
+    this(string msg)
+    {
+        super(msg);
+    }
+
+    public static ProtocolException expectedMessageKind(TypeInfo_Class expected, Object got)
+    {
+        string message = "Expected message of type '"~to!(string)(expected);
+
+        if(got is null)
+        {
+            message ~= " but got null";
+        }
+        else
+        {
+            message ~= " but got a message of type '"~to!(string)(got.classinfo)~"'";
+        }
+
+        return new ProtocolException(message);
+    }
+}
\ No newline at end of file