Implement JsonSchema on Uuid

schemars/Cargo.toml

@@ -19,7 +19,8 @@ serde_json = "1.0"
 
 chrono = { version = "0.4", default-features = false, optional = true }
 indexmap = { version = "1.2", optional = true }
-either = { version = "1.3", optional = true }
+either = { version = "1.3", default-features = false, optional = true }
+uuid = { version = "0.8", default-features = false, optional = true }
 
 [dev-dependencies]
 pretty_assertions = "0.6.1"
@@ -41,6 +42,10 @@ required-features = ["indexmap"]
 name = "either"
 required-features = ["either"]
 
+[[test]]
+name = "uuid"
+required-features = ["uuid"]
+
 [[test]]
 name = "schema_for_schema"
 required-features = ["impl_json_schema"]

schemars/src/json_schema_impls/mod.rs

@@ -40,6 +40,8 @@ mod chrono;
 mod indexmap;
 #[cfg(feature = "either")]
 mod either;
+#[cfg(feature = "uuid")]
+mod uuid;
 mod core;
 mod ffi;
 mod maps;

schemars/src/json_schema_impls/uuid.rs

@@ -0,0 +1,21 @@
+use crate::gen::SchemaGenerator;
+use crate::schema::*;
+use crate::JsonSchema;
+use uuid::Uuid;
+
+impl JsonSchema for Uuid {
+    no_ref_schema!();
+
+    fn schema_name() -> String {
+        "Uuid".to_string()
+    }
+
+    fn json_schema(_: &mut SchemaGenerator) -> Schema {
+        SchemaObject {
+            instance_type: Some(InstanceType::String.into()),
+            format: Some("uuid".to_string()),
+            ..Default::default()
+        }
+        .into()
+    }
+}

schemars/tests/expected/uuid.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Uuid",
+  "type": "string",
+  "format": "uuid"
+}

schemars/tests/uuid.rs

@@ -0,0 +1,8 @@
+mod util;
+use uuid::Uuid;
+use util::*;
+
+#[test]
+fn uuid() -> TestResult {
+    test_default_generated_schema::<Uuid>("uuid")
+}