Set format property on integers

schemars/src/json_schema_impls/primitives.rs

@@ -5,6 +5,12 @@ use serde_json::json;
 
 macro_rules! simple_impl {
     ($type:tt => $instance_type:ident) => {
+        simple_impl!($type => $instance_type, None);
+    };
+    ($type:tt => $instance_type:ident, $format: literal) => {
+        simple_impl!($type => $instance_type, Some($format.to_owned()));
+    };
+    ($type:tt => $instance_type:ident, $($format:tt)+) => {
         impl JsonSchema for $type {
             no_ref_schema!();
 
@@ -15,6 +21,7 @@ macro_rules! simple_impl {
             fn json_schema(_: &mut SchemaGenerator) -> Result {
                 Ok(SchemaObject {
                     instance_type: Some(InstanceType::$instance_type.into()),
+                    format: $($format)+,
                     ..Default::default()
                 }
                 .into())
@@ -26,20 +33,20 @@ macro_rules! simple_impl {
 simple_impl!(str => String);
 simple_impl!(String => String);
 simple_impl!(bool => Boolean);
-simple_impl!(f32 => Number);
+simple_impl!(f32 => Number, "float");
-simple_impl!(f64 => Number);
+simple_impl!(f64 => Number, "double");
-simple_impl!(i8 => Integer);
+simple_impl!(i8 => Integer, "int8");
-simple_impl!(i16 => Integer);
+simple_impl!(i16 => Integer, "int16");
-simple_impl!(i32 => Integer);
+simple_impl!(i32 => Integer, "int32");
-simple_impl!(i64 => Integer);
+simple_impl!(i64 => Integer, "int64");
-simple_impl!(i128 => Integer);
+simple_impl!(i128 => Integer, "int128");
-simple_impl!(isize => Integer);
+simple_impl!(isize => Integer, "int");
-simple_impl!(u8 => Integer);
+simple_impl!(u8 => Integer, "uint8");
-simple_impl!(u16 => Integer);
+simple_impl!(u16 => Integer, "uint16");
-simple_impl!(u32 => Integer);
+simple_impl!(u32 => Integer, "uint32");
-simple_impl!(u64 => Integer);
+simple_impl!(u64 => Integer, "uint64");
-simple_impl!(u128 => Integer);
+simple_impl!(u128 => Integer, "uint128");
-simple_impl!(usize => Integer);
+simple_impl!(usize => Integer, "uint");
 simple_impl!(() => Null);
 
 impl JsonSchema for char {

schemars/tests/expected/enum-external.json

@@ -32,7 +32,8 @@
               "type": "boolean"
             },
             "foo": {
-              "type": "integer"
+              "type": "integer",
+              "format": "int32"
             }
           },
           "required": [
@@ -52,7 +53,8 @@
           "type": "array",
           "items": [
             {
-              "type": "integer"
+              "type": "integer",
+              "format": "int32"
             },
             {
               "type": "boolean"

schemars/tests/expected/enum-internal.json

@@ -36,17 +36,18 @@
     {
       "type": "object",
       "properties": {
+        "bar": {
+          "type": "boolean"
+        },
+        "foo": {
+          "type": "integer",
+          "format": "int32"
+        },
         "typeProperty": {
           "type": "string",
           "enum": [
             "Struct"
           ]
-        },
-        "bar": {
-          "type": "boolean"
-        },
-        "foo": {
-          "type": "integer"
         }
       },
       "required": [

schemars/tests/expected/enum-untagged.json

@@ -18,7 +18,8 @@
           "type": "boolean"
         },
         "foo": {
-          "type": "integer"
+          "type": "integer",
+          "format": "int32"
         }
       },
       "required": [
@@ -30,7 +31,8 @@
       "type": "array",
       "items": [
         {
-          "type": "integer"
+          "type": "integer",
+          "format": "int32"
         },
         {
           "type": "boolean"

schemars/tests/expected/property-name-struct.json

@@ -4,13 +4,16 @@
   "type": "object",
   "properties": {
     "camelCase": {
-      "type": "integer"
+      "type": "integer",
+      "format": "int32"
     },
     "new_name_1": {
-      "type": "integer"
+      "type": "integer",
+      "format": "int32"
     },
     "new_name_2": {
-      "type": "integer"
+      "type": "integer",
+      "format": "int32"
     }
   },
   "required": [

schemars/tests/expected/schema-name-custom.json

@@ -7,7 +7,8 @@
       "$ref": "#/definitions/another-new-name"
     },
     "t": {
-      "type": "integer"
+      "type": "integer",
+      "format": "int32"
     },
     "u": {
       "type": "null"

schemars/tests/expected/schema-name-default.json

@@ -7,7 +7,8 @@
       "$ref": "#/definitions/MySimpleStruct"
     },
     "t": {
-      "type": "integer"
+      "type": "integer",
+      "format": "int32"
     },
     "u": {
       "type": "null"

schemars/tests/expected/struct-newtype.json

@@ -1,5 +1,6 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
   "title": "Newtype",
-  "type": "integer"
+  "type": "integer",
+  "format": "int32"
 }

schemars/tests/expected/struct-normal.json

@@ -7,7 +7,8 @@
       "type": "boolean"
     },
     "foo": {
-      "type": "integer"
+      "type": "integer",
+      "format": "int32"
     }
   },
   "required": [

schemars/tests/expected/struct-tuple.json

@@ -4,7 +4,8 @@
   "type": "array",
   "items": [
     {
-      "type": "integer"
+      "type": "integer",
+      "format": "int32"
     },
     {
       "type": "boolean"