From a3daf8eebfe410e8b2d8ef5d09f09ab14842c705 Mon Sep 17 00:00:00 2001
From: Manuel Pelloni <manuel.pelloni@m4ss.net>
Date: Fri, 5 Dec 2025 18:20:01 +0100
Subject: [PATCH] feat: impl `From` primitive numbers for integers

---
 benzina/src/int.rs | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/benzina/src/int.rs b/benzina/src/int.rs
index a7a1bf4..6364cae 100644
--- a/benzina/src/int.rs
+++ b/benzina/src/int.rs
@@ -227,6 +227,18 @@ macro_rules! from_numbers {
     }
 }
 
+macro_rules! from_primitive_numbers {
+    ($($from:ident => $to:ident),*) => {
+        $(
+            impl From<$from> for $to {
+                fn from(value: $from) -> Self {
+                    Self::new(value.into()).unwrap()
+                }
+            }
+        )*
+    }
+}
+
 impl_numbers! {
     U15 => u16, i16, SmallInt,
     U31 => u32, i32, Integer,
@@ -239,6 +251,15 @@ from_numbers! {
     U31 => U63
 }
 
+from_primitive_numbers! {
+    u8 => U15,
+    u8 => U31,
+    u8 => U63,
+    u16 => U31,
+    u16 => U63,
+    u32 => U63
+}
+
 #[cfg(test)]
 mod tests {
     use super::{U15, U31, U63};
@@ -381,6 +402,18 @@ mod tests {
         assert!(U15::try_from(-1i16).is_err());
     }
 
+    #[test]
+    fn test_from_primitive_numbers() {
+        assert_eq!(U15::new(u8::MAX.into()).unwrap(), u8::MAX.into());
+
+        assert_eq!(U31::new(u8::MAX.into()).unwrap(), u8::MAX.into());
+        assert_eq!(U31::new(u16::MAX.into()).unwrap(), u16::MAX.into());
+
+        assert_eq!(U63::new(u8::MAX.into()).unwrap(), u8::MAX.into());
+        assert_eq!(U63::new(u16::MAX.into()).unwrap(), u16::MAX.into());
+        assert_eq!(U63::new(u32::MAX.into()).unwrap(), u32::MAX.into());
+    }
+
     #[test]
     fn test_ordering() {
         let a = U15::new(100).unwrap();