schemars/json_schema_impls/
tuple.rs

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1use crate::gen::SchemaGenerator;
2use crate::schema::*;
3use crate::JsonSchema;
4use std::borrow::Cow;
5
6macro_rules! tuple_impls {
7    ($($len:expr => ($($name:ident)+))+) => {
8        $(
9            impl<$($name: JsonSchema),+> JsonSchema for ($($name,)+) {
10                no_ref_schema!();
11
12                fn schema_name() -> String {
13                    let mut name = "Tuple_of_".to_owned();
14                    name.push_str(&[$($name::schema_name()),+].join("_and_"));
15                    name
16                }
17
18                fn schema_id() -> Cow<'static, str> {
19                    let mut id = "(".to_owned();
20                    id.push_str(&[$($name::schema_id()),+].join(","));
21                    id.push(')');
22
23                    Cow::Owned(id)
24                }
25
26                fn json_schema(gen: &mut SchemaGenerator) -> Schema {
27                    let items = vec![
28                        $(gen.subschema_for::<$name>()),+
29                    ];
30                    SchemaObject {
31                        instance_type: Some(InstanceType::Array.into()),
32                        array: Some(Box::new(ArrayValidation {
33                            items: Some(items.into()),
34                            max_items: Some($len),
35                            min_items: Some($len),
36                            ..Default::default()
37                        })),
38                        ..Default::default()
39                    }
40                    .into()
41                }
42            }
43        )+
44    }
45}
46
47tuple_impls! {
48    1 => (T0)
49    2 => (T0 T1)
50    3 => (T0 T1 T2)
51    4 => (T0 T1 T2 T3)
52    5 => (T0 T1 T2 T3 T4)
53    6 => (T0 T1 T2 T3 T4 T5)
54    7 => (T0 T1 T2 T3 T4 T5 T6)
55    8 => (T0 T1 T2 T3 T4 T5 T6 T7)
56    9 => (T0 T1 T2 T3 T4 T5 T6 T7 T8)
57    10 => (T0 T1 T2 T3 T4 T5 T6 T7 T8 T9)
58    11 => (T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10)
59    12 => (T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11)
60    13 => (T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12)
61    14 => (T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13)
62    15 => (T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14)
63    16 => (T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15)
64}
65
66#[cfg(test)]
67mod tests {
68    use super::*;
69    use crate::tests::{schema_for, schema_object_for};
70    use pretty_assertions::assert_eq;
71
72    #[test]
73    fn schema_for_map_any_value() {
74        let schema = schema_object_for::<(i32, bool)>();
75        assert_eq!(
76            schema.instance_type,
77            Some(SingleOrVec::from(InstanceType::Array))
78        );
79        let array_validation = schema.array.unwrap();
80        assert_eq!(
81            array_validation.items,
82            Some(SingleOrVec::Vec(vec![
83                schema_for::<i32>(),
84                schema_for::<bool>()
85            ]))
86        );
87        assert_eq!(array_validation.max_items, Some(2));
88        assert_eq!(array_validation.min_items, Some(2));
89    }
90}
schemars/json_schema_impls/tuple.rs

schemars/json_schema_impls/
tuple.rs
