Add support for schemars v1

* Copy existing `schemars_0_9` code to `schemars_1` and update feature
  flags and names
* Add extra bounds for BTreeMap and HashMap keys
* Update snapshot files for v0.9->v1 differences
* Bumped syn in lockfile as schemars_derive uses types introduced in syn
    2.0.81

Author: jonasbb

Cargo.lock

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 * Add support for `Range`, `RangeFrom`, `RangeTo`, `RangeInclusive` (#851)
     `RangeToInclusive` is currently unsupported by serde.
 * Add `schemars` implementations for `Bound`, `Range`, `RangeFrom`, `RangeTo`, `RangeInclusive`.
+* Added support for `schemars` v1 under the `schemars_1` feature flag
 
 ## [3.13.0] - 2025-06-14
 

serde_with/CHANGELOG.md

@@ -41,7 +41,7 @@ alloc = ["serde/alloc", "base64?/alloc", "chrono_0_4?/alloc", "hex?/alloc", "ser
 ## Enables support for various types from the std library.
 ## This will enable `std` support in all dependencies too.
 ## The feature enabled by default and also enables `alloc`.
-std = ["alloc", "serde/std", "chrono_0_4?/clock", "chrono_0_4?/std", "indexmap_1?/std", "indexmap_2?/std", "time_0_3?/serde-well-known", "time_0_3?/std", "schemars_0_9?/std"]
+std = ["alloc", "serde/std", "chrono_0_4?/clock", "chrono_0_4?/std", "indexmap_1?/std", "indexmap_2?/std", "time_0_3?/serde-well-known", "time_0_3?/std", "schemars_0_9?/std", "schemars_1?/std"]
 
 #! # Documentation
 #!
@@ -113,20 +113,27 @@ json = ["dep:serde_json", "alloc"]
 ##
 ## This pulls in [`serde_with_macros`] as a dependency.
 macros = ["dep:serde_with_macros"]
-## This feature enables integration with `schemars` 0.8.
+## This feature enables integration with `schemars` v0.8.
 ## This makes `#[derive(JsonSchema)]` pick up the correct schema for the type
 ## used within `#[serde_as(as = ...)]`.
 ##
 ## This pulls in [`schemars` v0.8](::schemars_0_8) as a dependency. It will also implicitly enable
 ## the `std` feature as `schemars` is not `#[no_std]`.
 schemars_0_8 = ["dep:schemars_0_8", "std", "serde_with_macros?/schemars_0_8"]
-## This feature enables integration with `schemars` 0.9
+## This feature enables integration with `schemars` v0.9
 ## This makes `#[derive(JsonSchema)]` pick up the correct schema for the type
 ## used within `#[serde_as(as = ...)]`.
 ##
 ## This pulls in [`schemars` v0.9](::schemars_0_9) as a dependency. It will also implicitly enable
 ## the `alloc` feature.
 schemars_0_9 = ["dep:schemars_0_9", "alloc", "serde_with_macros?/schemars_0_9", "dep:serde_json"]
+## This feature enables integration with `schemars` v1
+## This makes `#[derive(JsonSchema)]` pick up the correct schema for the type
+## used within `#[serde_as(as = ...)]`.
+##
+## This pulls in [`schemars` v1](::schemars_1) as a dependency. It will also implicitly enable
+## the `alloc` feature.
+schemars_1 = ["dep:schemars_1", "alloc", "serde_with_macros?/schemars_1", "dep:serde_json"]
 ## The feature enables integration of `time` v0.3 specific conversions.
 ## This includes support for the timestamp and duration types.
 ##
@@ -146,6 +153,7 @@ indexmap_1 = { package = "indexmap", version = "1.8", optional = true, default-f
 indexmap_2 = { package = "indexmap", version = "2.0", optional = true, default-features = false, features = ["serde"] }
 schemars_0_8 = { package = "schemars", version = "0.8.16", optional = true, default-features = false }
 schemars_0_9 = { package = "schemars", version = "0.9.0", optional = true, default-features = false }
+schemars_1 = { package = "schemars", version = "1.0.2", optional = true, default-features = false }
 serde = { version = "1.0.152", default-features = false }
 serde_derive = "1.0.152"
 serde_json = { version = "1.0.45", optional = true, default-features = false }
@@ -165,6 +173,7 @@ ron = "0.10"
 rustversion = "1.0.0"
 schemars_0_8 = { package = "schemars", version = "0.8.16" }
 schemars_0_9 = { package = "schemars", version = "0.9.0" }
+schemars_1 = { package = "schemars", version = "1.0.2" }
 serde = { version = "1.0.152", default-features = false, features = ["derive"] }
 serde_json = { version = "1.0.25", features = ["preserve_order"] }
 serde_test = "1.0.124"
@@ -247,6 +256,11 @@ name = "schemars_0_9"
 path = "tests/schemars_0_9/main.rs"
 required-features = ["schemars_0_9", "std"]
 
+[[test]]
+name = "schemars_1"
+path = "tests/schemars_1/main.rs"
+required-features = ["schemars_1", "std"]
+
 [package.metadata.docs.rs]
 all-features = true
 rustdoc-args = [

serde_with/Cargo.toml

@@ -312,6 +312,9 @@ pub mod schemars_0_8;
 #[cfg(feature = "schemars_0_9")]
 #[cfg_attr(docsrs, doc(cfg(feature = "schemars_0_9")))]
 pub mod schemars_0_9;
+#[cfg(feature = "schemars_1")]
+#[cfg_attr(docsrs, doc(cfg(feature = "schemars_1")))]
+pub mod schemars_1;
 pub mod ser;
 mod serde_conv;
 #[cfg(feature = "time_0_3")]
@@ -2594,6 +2597,10 @@ pub struct SetLastValueWins<T>(PhantomData<T>);
 /// It is added implicitly by the [`#[serde_as]`](crate::serde_as) macro when any `schemars`
 /// feature is enabled.
 ///
-/// [`JsonSchema`]: ::schemars_0_8::JsonSchema
-#[cfg(any(feature = "schemars_0_8", feature = "schemars_0_9"))]
+/// [`JsonSchema`]: ::schemars_1::JsonSchema
+#[cfg(any(
+    feature = "schemars_0_8",
+    feature = "schemars_0_9",
+    feature = "schemars_1"
+))]
 pub struct Schema<T: ?Sized, TA>(PhantomData<T>, PhantomData<TA>);