Errors

- Added new module `errors`
- Added new type `ErrorType` with enum member `LISTENER_ALREADY_ADDED`

Exceptions (package)

- Publically import `errors` (only `ErrorType`) and `RenaissanceException` from `types`

Types

- Added `RenaissanceException` type as the base exception class for the server code

source/renaissance/exceptions/errors.d

@@ -0,0 +1,6 @@
+module renaissance.exceptions.errors;
+
+public enum ErrorType
+{
+    LISTENER_ALREADY_ADDED
+}

source/renaissance/exceptions/package.d

@@ -0,0 +1,4 @@
+module renaissance.exceptions;
+
+public import renaissance.exceptions.errors : ErrorType;
+public import renaissance.exceptions.types : RenaissanceException;

source/renaissance/exceptions/types.d

@@ -0,0 +1,21 @@
+module renaissance.exceptions.types;
+
+import renaissance.exceptions.errors : ErrorType;
+import std.conv : to;
+
+public class RenaissanceException : Exception
+{
+    private ErrorType error;
+
+    this(ErrorType error)
+    {
+        super(this.classinfo.name~": "~to!(string)(error));
+
+        this.error = error;
+    }
+
+    public ErrorType getError()
+    {
+        return error;
+    }
+}