Implement JsonSchema for nonzero unsigned ints

schemars/src/json_schema_impls/mod.rs

@@ -32,16 +32,17 @@ macro_rules! forward_impl {
 }
 
 mod array;
+#[cfg(std_atomic)]
+mod atomic;
 #[cfg(feature = "chrono")]
 mod chrono;
 mod core;
 mod ffi;
 mod maps;
+mod nonzero_unsigned;
 mod primitives;
 mod sequences;
 mod serdejson;
 mod time;
 mod tuple;
 mod wrapper;
-#[cfg(std_atomic)]
-mod atomic;

schemars/src/json_schema_impls/nonzero_unsigned.rs

@@ -0,0 +1,44 @@
+use crate::gen::SchemaGenerator;
+use crate::schema::*;
+use crate::JsonSchema;
+use std::num::*;
+
+macro_rules! nonzero_unsigned_impl {
+    ($type:ty => $primitive:ty) => {
+        impl JsonSchema for $type {
+            no_ref_schema!();
+
+            fn schema_name() -> String {
+                stringify!($type).to_owned()
+            }
+
+            fn json_schema(gen: &mut SchemaGenerator) -> Schema {
+                let mut schema: SchemaObject = <$primitive>::json_schema(gen).into();
+                schema.number().minimum = Some(1.0);
+                schema.into()
+            }
+        }
+    };
+}
+
+nonzero_unsigned_impl!(NonZeroU8 => u8);
+nonzero_unsigned_impl!(NonZeroU16 => u16);
+nonzero_unsigned_impl!(NonZeroU32 => u32);
+nonzero_unsigned_impl!(NonZeroU64 => u64);
+nonzero_unsigned_impl!(NonZeroU128 => u128);
+nonzero_unsigned_impl!(NonZeroUsize => usize);
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::tests::schema_object_for;
+    use pretty_assertions::assert_eq;
+
+    #[test]
+    fn schema_for_atomics() {
+        let schema = schema_object_for::<NonZeroU32>();
+        assert_eq!(schema.number.unwrap().minimum, Some(1.0));
+        assert_eq!(schema.instance_type, Some(InstanceType::Integer.into()));
+        assert_eq!(schema.format, Some("uint32".to_owned()));
+    }
+}