Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 1725 insertions, 0 deletions

diff --git a/third_party/rust/serde_with_macros/.cargo-checksum.json b/third_party/rust/serde_with_macros/.cargo-checksum.json
new file mode 100644
index 0000000000..c147c72da5
--- /dev/null
+++ b/third_party/rust/serde_with_macros/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"CHANGELOG.md":"880c29c4c3ce0b1ff845ab7d65d1d993e16556e8086748f711a1f79c2436815f","Cargo.toml":"bb1a43583596e4ab00d1d584026e0c3f8d442f6e1edbc861ca0754bfbbf4655d","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"7576269ea71f767b99297934c0b2367532690f8c4badc695edf8e04ab6a1e545","README.md":"1bb8ac615b1f41460d5ebb22784ccb6ff0f028fb8756b43e911b3584400b0fe0","src/lib.rs":"e37b7afbce72225a66b5c55b4a51730d4830298949b12d59e0c2718f68fa5cb5","src/utils.rs":"2b64a8ae74104034691e43befba768daf954501d7eed988b12953fa765a14c8d"},"package":"e182d6ec6f05393cc0e5ed1bf81ad6db3a8feedf8ee515ecdd369809bcce8082"}
\ No newline at end of file
diff --git a/third_party/rust/serde_with_macros/CHANGELOG.md b/third_party/rust/serde_with_macros/CHANGELOG.md
new file mode 100644
index 0000000000..c8153d018b
--- /dev/null
+++ b/third_party/rust/serde_with_macros/CHANGELOG.md
@@ -0,0 +1,157 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.5.2] - 2022-04-07
+
+### Fixed
+
+* Account for generics when deriving implementations with `SerializeDisplay` and `DeserializeFromStr` #413
+* Provide better error messages when parsing types fails #423
+
+## [1.5.1] - 2021-10-18
+
+### Added
+
+* The minimal supported Rust version (MSRV) is now specified in the `Cargo.toml` via the `rust-version` field. The field is supported in Rust 1.56 and has no effect on versions before.
+
+    More details: https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-rust-version-field
+
+## [1.5.0] - 2021-09-04
+
+### Added
+
+* Add the attribute `#[serde(borrow)]` on a field if `serde_as` is used in combination with the `BorrowCow` type.
+
+## [1.4.2] - 2021-06-07
+
+### Fixed
+
+* Describe how the `serde_as` macro works on a high level.
+* The derive macros `SerializeDisplay` and `DeserializeFromStr` were relying on the prelude where they were used.
+    Properly name all types and traits required for the expanded code to work.
+    The tests were improved to be better able to catch such problems.
+
+## [1.4.2] - 2021-02-16
+
+### Fixed
+
+* Fix compiling when having a struct field without the `serde_as` annotation.
+    This broke in 1.4.0 [#267](https://github.com/jonasbb/serde_with/issues/267)
+
+## [1.4.0] - 2021-02-15
+
+### Changed
+
+* Improve error messages when `#[serde_as(..)]` is misused as a field attribute.
+    Thanks to @Lehona for reporting the bug in #233.
+* Internal cleanup for assembling and parsing attributes during `serde_as` processing.
+* Change processing on `#[serde_as(...)]` attributes on fields.
+
+    The attributes will no longer be stripped during proc-macro processing.
+    Instead, a private derive macro is applied to the struct/enum which captures them and makes them inert, thus allowing compilation.
+
+    This should have no effect on the generated code and on the runtime behavior.
+    It eases integration of third-party crates with `serde_with`, since they can now process the `#[serde_as(...)]` field attributes reliably.
+    Before this was impossible for derive macros and lead to awkward ordering constraints on the attribute macros.
+
+    Thanks to @Lehona for reporting this problem and to @dtolnay for suggesting the dummy derive macro.
+
+## [1.3.0] - 2020-11-22
+
+### Added
+
+* Support specifying a path to the `serde_with` crate for the `serde_as` and derive macros.
+    This is useful when using crate renaming in Cargo.toml or while re-exporting the macros.
+
+    Many thanks to @tobz1000 for raising the issue and contributing fixes.
+
+### Changed
+
+* Bump minimum supported rust version to 1.40.0
+
+## [1.2.2] - 2020-10-06
+
+### Fixed
+
+* @adwhit contributed an improvement to `DeserializeFromStr` which allows it to deserialize from bytes (#186).
+    This makes the derived implementation applicable in more situations.
+
+## [1.2.1] - 2020-10-04
+
+### Fixed
+
+* The derive macros `SerializeDisplay` and `DeserializeFromStr` now use the properly namespaced types and traits.
+    This solves conflicts with `Result` if `Result` is not `std::result::Result`, e.g., a type alias.
+    Additionally, the code assumed that `FromStr` was in scope, which is now also not required.
+
+    Thanks goes to @adwhit for reporting and fixing the problem in #186.
+
+## [1.2.0] - 2020-10-01
+
+### Added
+
+* Add `serde_as` macro. Refer to the `serde_with` crate for details.
+* Add two derive macros, `SerializeDisplay` and `DeserializeFromStr`, which implement the `Serialize`/`Deserialize` traits based on `Display` and `FromStr`.
+    This is in addition to the already existing methods like `DisplayFromStr`, which act locally, whereas the derive macros provide the traits expected by the rest of the ecosystem.
+
+### Changed
+
+* Convert the code to use 2018 edition.
+
+### Fixed
+
+* The `serde_as` macro now supports serde attributes and no longer panic on unrecognized values in the attribute.
+
+## [1.2.0-alpha.3] - 2020-08-16
+
+### Added
+
+* Add two derive macros, `SerializeDisplay` and `DeserializeFromStr`, which implement the `Serialize`/`Deserialize` traits based on `Display` and `FromStr`.
+    This is in addition to the already existing methods like `DisplayFromStr`, which act locally, whereas the derive macros provide the traits expected by the rest of the ecosystem.
+
+## [1.2.0-alpha.2] - 2020-08-08
+
+### Fixed
+
+* The `serde_as` macro now supports serde attributes and no longer panic on unrecognized values in the attribute.
+
+## [1.2.0-alpha.1] - 2020-06-27
+
+### Added
+
+* Add `serde_as` macro. Refer to the `serde_with` crate for details.
+
+### Changed
+
+* Convert the code to use 2018 edition.
+
+## [1.1.0] - 2020-01-16
+
+### Changed
+
+* Bump minimal Rust version to 1.36.0 to support Rust Edition 2018
+* Improved CI pipeline by running `cargo audit` and `tarpaulin` in all configurations now.
+
+## [1.0.1] - 2019-04-09
+
+### Fixed
+
+* Features for the `syn` dependency were missing.
+    This was hidden due to the dev-dependencies whose features leaked into the normal build.
+
+## [1.0.0] - 2019-04-02
+
+Initial Release
+
+### Added
+
+* Add `skip_serializing_none` attribute, which adds `#[serde(skip_serializing_if = "Option::is_none")]` for each Option in a struct.
+    This is helpful for APIs which have many optional fields.
+    The effect of can be negated by adding `serialize_always` on those fields, which should always be serialized.
+    Existing `skip_serializing_if` will never be modified and those fields keep their behavior.
diff --git a/third_party/rust/serde_with_macros/Cargo.toml b/third_party/rust/serde_with_macros/Cargo.toml
new file mode 100644
index 0000000000..f7bb663141
--- /dev/null
+++ b/third_party/rust/serde_with_macros/Cargo.toml
@@ -0,0 +1,62 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+rust-version = "1.46"
+name = "serde_with_macros"
+version = "1.5.2"
+authors = ["Jonas Bushart"]
+include = ["src/**/*", "LICENSE-*", "README.md", "CHANGELOG.md"]
+description = "proc-macro library for serde_with"
+documentation = "https://docs.rs/serde_with_macros/"
+readme = "README.md"
+keywords = ["serde", "utilities", "serialization", "deserialization"]
+categories = ["encoding"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/jonasbb/serde_with/"
+[package.metadata.docs.rs]
+all-features = true
+
+[lib]
+proc-macro = true
+[dependencies.darling]
+version = "0.13.4"
+
+[dependencies.proc-macro2]
+version = "1.0.1"
+
+[dependencies.quote]
+version = "1.0.0"
+
+[dependencies.syn]
+version = "1.0.3"
+features = ["full", "parsing"]
+[dev-dependencies.pretty_assertions]
+version = "1.0.0"
+
+[dev-dependencies.rustversion]
+version = "1.0.0"
+
+[dev-dependencies.serde]
+version = "1.0.75"
+features = ["derive"]
+
+[dev-dependencies.serde_json]
+version = "1.0.25"
+
+[dev-dependencies.trybuild]
+version = "1.0.14"
+
+[dev-dependencies.version-sync]
+version = "0.9.1"
+[badges.maintenance]
+status = "actively-developed"
diff --git a/third_party/rust/serde_with_macros/LICENSE-APACHE b/third_party/rust/serde_with_macros/LICENSE-APACHE
new file mode 100644
index 0000000000..16fe87b06e
--- /dev/null
+++ b/third_party/rust/serde_with_macros/LICENSE-APACHE
@@ -0,0 +1,201 @@
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diff --git a/third_party/rust/serde_with_macros/LICENSE-MIT b/third_party/rust/serde_with_macros/LICENSE-MIT
new file mode 100644
index 0000000000..9203baa055
--- /dev/null
+++ b/third_party/rust/serde_with_macros/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2015
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diff --git a/third_party/rust/serde_with_macros/README.md b/third_party/rust/serde_with_macros/README.md
new file mode 100644
index 0000000000..d9d466e5c9
--- /dev/null
+++ b/third_party/rust/serde_with_macros/README.md
@@ -0,0 +1,186 @@
+# Custom de/serialization functions for Rust's [serde](https://serde.rs)
+
+[![crates.io badge](https://img.shields.io/crates/v/serde_with.svg)](https://crates.io/crates/serde_with/)
+[![Build Status](https://github.com/jonasbb/serde_with/workflows/Rust%20CI/badge.svg)](https://github.com/jonasbb/serde_with)
+[![codecov](https://codecov.io/gh/jonasbb/serde_with/branch/master/graph/badge.svg)](https://codecov.io/gh/jonasbb/serde_with)
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/4322/badge)](https://bestpractices.coreinfrastructure.org/projects/4322)
+[![Binder](https://img.shields.io/badge/Try%20on%20-binder-579ACA.svg?logo=data:image/png;base64,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)](https://mybinder.org/v2/gist/jonasbb/18b9aece4c17f617b1c2b3946d29eeb0/HEAD?filepath=serde-with-demo.ipynb)
+
+---
+
+This crate provides custom de/serialization helpers to use in combination with [serde's with-annotation][with-annotation] and with the improved [`serde_as`][as-annotation]-annotation.
+Some common use cases are:
+
+* De/Serializing a type using the `Display` and `FromStr` traits, e.g., for `u8`, `url::Url`, or `mime::Mime`.
+     Check [`DisplayFromStr`][] or [`serde_with::rust::display_fromstr`][display_fromstr] for details.
+* Support for arrays larger than 32 elements or using const generics.
+    With `serde_as` large arrays are supported, even if they are nested in other types.
+    `[bool; 64]`, `Option<[u8; M]>`, and `Box<[[u8; 64]; N]>` are all supported, as [this examples shows](#large-and-const-generic-arrays).
+* Skip serializing all empty `Option` types with [`#[skip_serializing_none]`][skip_serializing_none].
+* Apply a prefix to each field name of a struct, without changing the de/serialize implementations of the struct using [`with_prefix!`][].
+* Deserialize a comma separated list like `#hash,#tags,#are,#great` into a `Vec<String>`.
+     Check the documentation for [`serde_with::rust::StringWithSeparator::<CommaSeparator>`][StringWithSeparator].
+
+### Getting Help
+
+**Check out the [user guide][user guide] to find out more tips and tricks about this crate.**
+
+For further help using this crate you can [open a new discussion](https://github.com/jonasbb/serde_with/discussions/new) or ask on [users.rust-lang.org](https://users.rust-lang.org/).
+For bugs please open a [new issue](https://github.com/jonasbb/serde_with/issues/new) on Github.
+
+## Use `serde_with` in your Project
+
+Add this to your `Cargo.toml`:
+
+```toml
+[dependencies.serde_with]
+version = "1.12.1"
+features = [ "..." ]
+```
+
+The crate contains different features for integration with other common crates.
+Check the [feature flags][] section for information about all available features.
+
+## Examples
+
+Annotate your struct or enum to enable the custom de/serializer.
+
+### `DisplayFromStr`
+
+```rust
+#[serde_as]
+#[derive(Deserialize, Serialize)]
+struct Foo {
+    // Serialize with Display, deserialize with FromStr
+    #[serde_as(as = "DisplayFromStr")]
+    bar: u8,
+}
+
+// This will serialize
+Foo {bar: 12}
+
+// into this JSON
+{"bar": "12"}
+```
+
+### Large and const-generic arrays
+
+serde does not support arrays with more than 32 elements or using const-generics.
+The `serde_as` attribute allows to circumvent this restriction, even for nested types and nested arrays.
+
+```rust
+#[serde_as]
+#[derive(Deserialize, Serialize)]
+struct Arrays<const N: usize, const M: usize> {
+    #[serde_as(as = "[_; N]")]
+    constgeneric: [bool; N],
+
+    #[serde_as(as = "Box<[[_; 64]; N]>")]
+    nested: Box<[[u8; 64]; N]>,
+
+    #[serde_as(as = "Option<[_; M]>")]
+    optional: Option<[u8; M]>,
+}
+
+// This allows us to serialize a struct like this
+let arrays: Arrays<100, 128> = Arrays {
+    constgeneric: [true; 100],
+    nested: Box::new([[111; 64]; 100]),
+    optional: Some([222; 128])
+};
+assert!(serde_json::to_string(&arrays).is_ok());
+```
+
+### `skip_serializing_none`
+
+This situation often occurs with JSON, but other formats also support optional fields.
+If many fields are optional, putting the annotations on the structs can become tedious.
+
+```rust
+#[skip_serializing_none]
+#[derive(Deserialize, Serialize)]
+struct Foo {
+    a: Option<usize>,
+    b: Option<usize>,
+    c: Option<usize>,
+    d: Option<usize>,
+    e: Option<usize>,
+    f: Option<usize>,
+    g: Option<usize>,
+}
+
+// This will serialize
+Foo {a: None, b: None, c: None, d: Some(4), e: None, f: None, g: Some(7)}
+
+// into this JSON
+{"d": 4, "g": 7}
+```
+
+### Advanced `serde_as` usage
+
+This example is mainly supposed to highlight the flexibility of the `serde_as`-annotation compared to [serde's with-annotation][with-annotation].
+More details about `serde_as` can be found in the [user guide][].
+
+```rust
+#[serde_as]
+#[derive(Deserialize, Serialize)]
+struct Foo {
+     // Serialize them into a list of number as seconds
+     #[serde_as(as = "Vec<DurationSeconds>")]
+     durations: Vec<Duration>,
+     // We can treat a Vec like a map with duplicates.
+     // JSON only allows string keys, so convert i32 to strings
+     // The bytes will be hex encoded
+     #[serde_as(as = "BTreeMap<DisplayFromStr, Hex>")]
+     bytes: Vec<(i32, Vec<u8>)>,
+}
+
+// This will serialize
+Foo {
+    durations: vec![Duration::new(5, 0), Duration::new(3600, 0), Duration::new(0, 0)],
+    bytes: vec![
+        (1, vec![0, 1, 2]),
+        (-100, vec![100, 200, 255]),
+        (1, vec![0, 111, 222]),
+    ],
+}
+
+// into this JSON
+{
+    "durations": [5, 3600, 0],
+    "bytes": {
+        "1": "000102",
+        "-100": "64c8ff",
+        "1": "006fde"
+    }
+}
+```
+
+[`DisplayFromStr`]: https://docs.rs/serde_with/1.12.1/serde_with/struct.DisplayFromStr.html
+[`with_prefix!`]: https://docs.rs/serde_with/1.12.1/serde_with/macro.with_prefix.html
+[display_fromstr]: https://docs.rs/serde_with/1.12.1/serde_with/rust/display_fromstr/index.html
+[feature flags]: https://docs.rs/serde_with/1.12.1/serde_with/guide/feature_flags/index.html
+[skip_serializing_none]: https://docs.rs/serde_with/1.12.1/serde_with/attr.skip_serializing_none.html
+[StringWithSeparator]: https://docs.rs/serde_with/1.12.1/serde_with/rust/struct.StringWithSeparator.html
+[user guide]: https://docs.rs/serde_with/1.12.1/serde_with/guide/index.html
+[with-annotation]: https://serde.rs/field-attrs.html#with
+[as-annotation]: https://docs.rs/serde_with/1.12.1/serde_with/guide/serde_as/index.html
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+For detailed contribution instructions please read [`CONTRIBUTING.md`].
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall
+be dual licensed as above, without any additional terms or conditions.
+
+[`CONTRIBUTING.md`]: https://github.com/jonasbb/serde_with/blob/master/CONTRIBUTING.md
diff --git a/third_party/rust/serde_with_macros/src/lib.rs b/third_party/rust/serde_with_macros/src/lib.rs
new file mode 100644
index 0000000000..9798c13d32
--- /dev/null
+++ b/third_party/rust/serde_with_macros/src/lib.rs
@@ -0,0 +1,1016 @@
+#![forbid(unsafe_code)]
+#![warn(
+    clippy::semicolon_if_nothing_returned,
+    missing_copy_implementations,
+    // missing_crate_level_docs, not available in MSRV
+    missing_debug_implementations,
+    missing_docs,
+    rust_2018_idioms,
+    trivial_casts,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unused_import_braces,
+    unused_qualifications,
+    variant_size_differences
+)]
+#![doc(test(attr(forbid(unsafe_code))))]
+#![doc(test(attr(deny(
+    missing_copy_implementations,
+    missing_debug_implementations,
+    trivial_casts,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unused_import_braces,
+    unused_qualifications,
+))))]
+#![doc(test(attr(warn(rust_2018_idioms))))]
+// Not needed for 2018 edition and conflicts with `rust_2018_idioms`
+#![doc(test(no_crate_inject))]
+#![doc(html_root_url = "https://docs.rs/serde_with_macros/1.5.2")]
+// Necessary to silence the warning about clippy::unknown_clippy_lints on nightly
+#![allow(renamed_and_removed_lints)]
+// Necessary for nightly clippy lints
+#![allow(clippy::unknown_clippy_lints)]
+
+//! proc-macro extensions for [`serde_with`].
+//!
+//! This crate should **NEVER** be used alone.
+//! All macros **MUST** be used via the re-exports in the [`serde_with`] crate.
+//!
+//! [`serde_with`]: https://crates.io/crates/serde_with/
+
+#[allow(unused_extern_crates)]
+extern crate proc_macro;
+
+mod utils;
+
+use crate::utils::{split_with_de_lifetime, DeriveOptions, IteratorExt as _};
+use darling::util::Override;
+use darling::{Error as DarlingError, FromField, FromMeta};
+use proc_macro::TokenStream;
+use proc_macro2::{Span, TokenStream as TokenStream2};
+use quote::quote;
+use syn::punctuated::Pair;
+use syn::spanned::Spanned;
+use syn::{
+    parse_macro_input, parse_quote, AttributeArgs, DeriveInput, Error, Field, Fields,
+    GenericArgument, ItemEnum, ItemStruct, Meta, NestedMeta, Path, PathArguments, ReturnType, Type,
+};
+
+/// Apply function on every field of structs or enums
+fn apply_function_to_struct_and_enum_fields<F>(
+    input: TokenStream,
+    function: F,
+) -> Result<TokenStream2, Error>
+where
+    F: Copy,
+    F: Fn(&mut Field) -> Result<(), String>,
+{
+    /// Handle a single struct or a single enum variant
+    fn apply_on_fields<F>(fields: &mut Fields, function: F) -> Result<(), Error>
+    where
+        F: Fn(&mut Field) -> Result<(), String>,
+    {
+        match fields {
+            // simple, no fields, do nothing
+            Fields::Unit => Ok(()),
+            Fields::Named(ref mut fields) => fields
+                .named
+                .iter_mut()
+                .map(|field| function(field).map_err(|err| Error::new(field.span(), err)))
+                .collect_error(),
+            Fields::Unnamed(ref mut fields) => fields
+                .unnamed
+                .iter_mut()
+                .map(|field| function(field).map_err(|err| Error::new(field.span(), err)))
+                .collect_error(),
+        }
+    }
+
+    // For each field in the struct given by `input`, add the `skip_serializing_if` attribute,
+    // if and only if, it is of type `Option`
+    if let Ok(mut input) = syn::parse::<ItemStruct>(input.clone()) {
+        apply_on_fields(&mut input.fields, function)?;
+        Ok(quote!(#input))
+    } else if let Ok(mut input) = syn::parse::<ItemEnum>(input) {
+        input
+            .variants
+            .iter_mut()
+            .map(|variant| apply_on_fields(&mut variant.fields, function))
+            .collect_error()?;
+        Ok(quote!(#input))
+    } else {
+        Err(Error::new(
+            Span::call_site(),
+            "The attribute can only be applied to struct or enum definitions.",
+        ))
+    }
+}
+
+/// Like [apply_function_to_struct_and_enum_fields] but for darling errors
+fn apply_function_to_struct_and_enum_fields_darling<F>(
+    input: TokenStream,
+    serde_with_crate_path: &Path,
+    function: F,
+) -> Result<TokenStream2, DarlingError>
+where
+    F: Copy,
+    F: Fn(&mut Field) -> Result<(), DarlingError>,
+{
+    /// Handle a single struct or a single enum variant
+    fn apply_on_fields<F>(fields: &mut Fields, function: F) -> Result<(), DarlingError>
+    where
+        F: Fn(&mut Field) -> Result<(), DarlingError>,
+    {
+        match fields {
+            // simple, no fields, do nothing
+            Fields::Unit => Ok(()),
+            Fields::Named(ref mut fields) => {
+                let errors: Vec<DarlingError> = fields
+                    .named
+                    .iter_mut()
+                    .map(|field| function(field).map_err(|err| err.with_span(&field)))
+                    // turn the Err variant into the Some, such that we only collect errors
+                    .filter_map(|res| match res {
+                        Err(e) => Some(e),
+                        Ok(()) => None,
+                    })
+                    .collect();
+                if errors.is_empty() {
+                    Ok(())
+                } else {
+                    Err(DarlingError::multiple(errors))
+                }
+            }
+            Fields::Unnamed(ref mut fields) => {
+                let errors: Vec<DarlingError> = fields
+                    .unnamed
+                    .iter_mut()
+                    .map(|field| function(field).map_err(|err| err.with_span(&field)))
+                    // turn the Err variant into the Some, such that we only collect errors
+                    .filter_map(|res| match res {
+                        Err(e) => Some(e),
+                        Ok(()) => None,
+                    })
+                    .collect();
+                if errors.is_empty() {
+                    Ok(())
+                } else {
+                    Err(DarlingError::multiple(errors))
+                }
+            }
+        }
+    }
+
+    // Add a dummy derive macro which consumes (makes inert) all field attributes
+    let consume_serde_as_attribute = parse_quote!(
+        #[derive(#serde_with_crate_path::__private_consume_serde_as_attributes)]
+    );
+
+    // For each field in the struct given by `input`, add the `skip_serializing_if` attribute,
+    // if and only if, it is of type `Option`
+    if let Ok(mut input) = syn::parse::<ItemStruct>(input.clone()) {
+        apply_on_fields(&mut input.fields, function)?;
+        input.attrs.push(consume_serde_as_attribute);
+        Ok(quote!(#input))
+    } else if let Ok(mut input) = syn::parse::<ItemEnum>(input) {
+        let errors: Vec<DarlingError> = input
+            .variants
+            .iter_mut()
+            .map(|variant| apply_on_fields(&mut variant.fields, function))
+            // turn the Err variant into the Some, such that we only collect errors
+            .filter_map(|res| match res {
+                Err(e) => Some(e),
+                Ok(()) => None,
+            })
+            .collect();
+        if errors.is_empty() {
+            input.attrs.push(consume_serde_as_attribute);
+            Ok(quote!(#input))
+        } else {
+            Err(DarlingError::multiple(errors))
+        }
+    } else {
+        Err(DarlingError::custom(
+            "The attribute can only be applied to struct or enum definitions.",
+        )
+        .with_span(&Span::call_site()))
+    }
+}
+
+/// Add `skip_serializing_if` annotations to [`Option`] fields.
+///
+/// The attribute can be added to structs and enums.
+///
+/// Import this attribute with `use serde_with::skip_serializing_none;`.
+///
+/// # Example
+///
+/// JSON APIs sometimes have many optional values.
+/// Missing values should not be serialized, to keep the serialized format smaller.
+/// Such a data type might look like:
+///
+/// ```rust
+/// # use serde::Serialize;
+/// #
+/// #[derive(Serialize)]
+/// struct Data {
+///     #[serde(skip_serializing_if = "Option::is_none")]
+///     a: Option<String>,
+///     #[serde(skip_serializing_if = "Option::is_none")]
+///     b: Option<u64>,
+///     #[serde(skip_serializing_if = "Option::is_none")]
+///     c: Option<String>,
+///     #[serde(skip_serializing_if = "Option::is_none")]
+///     d: Option<bool>,
+/// }
+/// ```
+///
+/// The `skip_serializing_if` annotation is repetitive and harms readability.
+/// Instead, the same struct can be written as:
+///
+/// ```rust
+/// # use serde::Serialize;
+/// # use serde_with_macros::skip_serializing_none;
+/// #[skip_serializing_none]
+/// #[derive(Serialize)]
+/// struct Data {
+///     a: Option<String>,
+///     b: Option<u64>,
+///     c: Option<String>,
+///     // Always serialize field d even if None
+///     #[serialize_always]
+///     d: Option<bool>,
+/// }
+/// ```
+///
+/// Existing `skip_serializing_if` annotations will not be altered.
+///
+/// If some values should always be serialized, then the `serialize_always` can be used.
+///
+/// # Limitations
+///
+/// The `serialize_always` cannot be used together with a manual `skip_serializing_if` annotations, as these conflict in their meaning.
+/// A compile error will be generated if this occurs.
+///
+/// The `skip_serializing_none` only works if the type is called [`Option`], [`std::option::Option`], or [`core::option::Option`].
+/// Type aliasing an [`Option`] and giving it another name, will cause this field to be ignored.
+/// This cannot be supported, as proc-macros run before type checking, thus it is not possible to determine if a type alias refers to an [`Option`].
+///
+/// ```rust
+/// # use serde::Serialize;
+/// # use serde_with_macros::skip_serializing_none;
+/// type MyOption<T> = Option<T>;
+///
+/// #[skip_serializing_none]
+/// #[derive(Serialize)]
+/// struct Data {
+///     a: MyOption<String>, // This field will not be skipped
+/// }
+/// ```
+///
+/// Likewise, if you import a type and name it `Option`, the `skip_serializing_if` attributes will be added and compile errors will occur, if `Option::is_none` is not a valid function.
+/// Here the function `Vec::is_none` does not exist and therefore the example fails to compile.
+///
+/// ```rust,compile_fail
+/// # use serde::Serialize;
+/// # use serde_with_macros::skip_serializing_none;
+/// use std::vec::Vec as Option;
+///
+/// #[skip_serializing_none]
+/// #[derive(Serialize)]
+/// struct Data {
+///     a: Option<String>,
+/// }
+/// ```
+#[proc_macro_attribute]
+pub fn skip_serializing_none(_args: TokenStream, input: TokenStream) -> TokenStream {
+    let res = match apply_function_to_struct_and_enum_fields(
+        input,
+        skip_serializing_none_add_attr_to_field,
+    ) {
+        Ok(res) => res,
+        Err(err) => err.to_compile_error(),
+    };
+    TokenStream::from(res)
+}
+
+/// Add the skip_serializing_if annotation to each field of the struct
+fn skip_serializing_none_add_attr_to_field(field: &mut Field) -> Result<(), String> {
+    if let Type::Path(path) = &field.ty {
+        if is_std_option(&path.path) {
+            let has_skip_serializing_if =
+                field_has_attribute(field, "serde", "skip_serializing_if");
+
+            // Remove the `serialize_always` attribute
+            let mut has_always_attr = false;
+            field.attrs.retain(|attr| {
+                let has_attr = attr.path.is_ident("serialize_always");
+                has_always_attr |= has_attr;
+                !has_attr
+            });
+
+            // Error on conflicting attributes
+            if has_always_attr && has_skip_serializing_if {
+                let mut msg = r#"The attributes `serialize_always` and `serde(skip_serializing_if = "...")` cannot be used on the same field"#.to_string();
+                if let Some(ident) = &field.ident {
+                    msg += ": `";
+                    msg += &ident.to_string();
+                    msg += "`";
+                }
+                msg += ".";
+                return Err(msg);
+            }
+
+            // Do nothing if `skip_serializing_if` or `serialize_always` is already present
+            if has_skip_serializing_if || has_always_attr {
+                return Ok(());
+            }
+
+            // Add the `skip_serializing_if` attribute
+            let attr = parse_quote!(
+                #[serde(skip_serializing_if = "Option::is_none")]
+            );
+            field.attrs.push(attr);
+        } else {
+            // Warn on use of `serialize_always` on non-Option fields
+            let has_attr = field
+                .attrs
+                .iter()
+                .any(|attr| attr.path.is_ident("serialize_always"));
+            if has_attr {
+                return Err(
+                    "`serialize_always` may only be used on fields of type `Option`.".into(),
+                );
+            }
+        }
+    }
+    Ok(())
+}
+
+/// Return `true`, if the type path refers to `std::option::Option`
+///
+/// Accepts
+///
+/// * `Option`
+/// * `std::option::Option`, with or without leading `::`
+/// * `core::option::Option`, with or without leading `::`
+fn is_std_option(path: &Path) -> bool {
+    (path.leading_colon.is_none() && path.segments.len() == 1 && path.segments[0].ident == "Option")
+        || (path.segments.len() == 3
+            && (path.segments[0].ident == "std" || path.segments[0].ident == "core")
+            && path.segments[1].ident == "option"
+            && path.segments[2].ident == "Option")
+}
+
+/// Determine if the `field` has an attribute with given `namespace` and `name`
+///
+/// On the example of
+/// `#[serde(skip_serializing_if = "Option::is_none")]`
+///
+/// * `serde` is the outermost path, here namespace
+/// * it contains a Meta::List
+/// * which contains in another Meta a Meta::NameValue
+/// * with the name being `skip_serializing_if`
+fn field_has_attribute(field: &Field, namespace: &str, name: &str) -> bool {
+    for attr in &field.attrs {
+        if attr.path.is_ident(namespace) {
+            // Ignore non parsable attributes, as these are not important for us
+            if let Ok(Meta::List(expr)) = attr.parse_meta() {
+                for expr in expr.nested {
+                    if let NestedMeta::Meta(Meta::NameValue(expr)) = expr {
+                        if let Some(ident) = expr.path.get_ident() {
+                            if *ident == name {
+                                return true;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    false
+}
+
+/// Convenience macro to use the [`serde_as`] system.
+///
+/// The [`serde_as`] system is designed as a more flexible alternative to serde's with-annotation.
+///
+/// # Example
+///
+/// ```rust,ignore
+/// use serde_with::{serde_as, DisplayFromStr};
+/// use std::collections::HashMap;
+///
+/// #[serde_as]
+/// #[derive(Serialize, Deserialize)]
+/// struct Data {
+///     /// Serialize into number
+///     #[serde_as(as = "_")]
+///     a: u32,
+///
+///     /// Serialize into String
+///     #[serde_as(as = "DisplayFromStr")]
+///     b: u32,
+///
+///     /// Serialize into a map from String to String
+///     #[serde_as(as = "HashMap<DisplayFromStr, _>")]
+///     c: Vec<(u32, String)>,
+/// }
+/// ```
+///
+/// # Alternative path to `serde_with` crate
+///
+/// If `serde_with` is not available at the default path, its path should be specified with the
+/// `crate` argument. See [re-exporting `serde_as`] for more use case information.
+///
+/// ```rust,ignore
+/// #[serde_as(crate = "::some_other_lib::serde_with")]
+/// #[derive(Deserialize)]
+/// struct Data {
+///     #[serde_as(as = "_")]
+///     a: u32,
+/// }
+/// ```
+///
+/// # What this macro does
+///
+/// The `serde_as` macro only serves a convenience function.
+/// All the steps it performs, can easily be done manually, in case the cost of an attribute macro is deemed to high.
+/// The functionality can best be described with an example.
+///
+/// ```rust,ignore
+/// #[serde_as]
+/// #[derive(serde::Serialize)]
+/// struct Foo {
+///     #[serde_as(as = "Vec<_>")]
+///     bar: Vec<u32>,
+/// }
+/// ```
+///
+/// 1. All the placeholder type `_` will be replaced with `::serde_with::Same`.
+///     The placeholder type `_` marks all the places where the types `Serialize` implementation should be used.
+///     In the example, it means that the `u32` values will serialize with the `Serialize` implementation of `u32`.
+///     The `Same` type implements `SerializeAs` whenever the underlying type implements `Serialize` and is used to make the two traits compatible.
+///
+///     If you specify a custom path for `serde_with` via the `crate` attribute, the path to the `Same` type will be altered accordingly.
+/// 2. Wrap the type from the annotation inside a `::serde_with::As`.
+///     In the above example we know have something like `::serde_with::As::<Vec<::serde_with::Same>>`.
+///     The `As` type acts as the opposite of the `Same` type.
+///     It allows using a `SerializeAs` type whenever a `Serialize` is required.
+/// 3. Translate the `*as` attributes into the serde equivalent ones.
+///     `#[serde_as(as = ...)]` will become `#[serde(with = ...)]`.
+///     Similarly, `serialize_as` is translated to `serialize_with`.
+///
+///     The field attributes will be kept on the struct/enum such that other macros can use them too.
+/// 4. It searches `#[serde_as(as = ...)]` if there is a type named `BorrowCow` under any path.
+///     If `BorrowCow` is found, the attribute `#[serde(borrow)]` is added to the field.
+///     If `#[serde(borrow)]` or `#[serde(borrow = "...")]` is already present, this step will be skipped.
+///
+/// After all these steps, the code snippet will have transformed into roughly this.
+///
+/// ```rust,ignore
+/// #[derive(serde::Serialize)]
+/// struct Foo {
+///     #[serde_as(as = "Vec<_>")]
+///     #[serde(with = "::serde_with::As::<Vec<::serde_with::Same>>")]
+///     bar: Vec<u32>,
+/// }
+/// ```
+///
+/// [`serde_as`]: https://docs.rs/serde_with/1.12.1/serde_with/guide/index.html
+/// [re-exporting `serde_as`]: https://docs.rs/serde_with/1.12.1/serde_with/guide/serde_as/index.html#re-exporting-serde_as
+#[proc_macro_attribute]
+pub fn serde_as(args: TokenStream, input: TokenStream) -> TokenStream {
+    #[derive(FromMeta, Debug)]
+    struct SerdeContainerOptions {
+        #[darling(rename = "crate", default)]
+        alt_crate_path: Option<String>,
+    }
+
+    let args: AttributeArgs = parse_macro_input!(args);
+    let container_options = match SerdeContainerOptions::from_list(&args) {
+        Ok(v) => v,
+        Err(e) => {
+            return TokenStream::from(e.write_errors());
+        }
+    };
+
+    let serde_with_crate_path = container_options
+        .alt_crate_path
+        .as_deref()
+        .unwrap_or("::serde_with");
+    let serde_with_crate_path = match syn::parse_str(serde_with_crate_path) {
+        Ok(path) => path,
+        Err(err) => return TokenStream::from(DarlingError::from(err).write_errors()),
+    };
+
+    // Convert any error message into a nice compiler error
+    let res = match apply_function_to_struct_and_enum_fields_darling(
+        input,
+        &serde_with_crate_path,
+        |field| serde_as_add_attr_to_field(field, &serde_with_crate_path),
+    ) {
+        Ok(res) => res,
+        Err(err) => err.write_errors(),
+    };
+    TokenStream::from(res)
+}
+
+/// Inspect the field and convert the `serde_as` attribute into the classical `serde`
+fn serde_as_add_attr_to_field(
+    field: &mut Field,
+    serde_with_crate_path: &Path,
+) -> Result<(), DarlingError> {
+    #[derive(FromField, Debug)]
+    #[darling(attributes(serde_as))]
+    struct SerdeAsOptions {
+        #[darling(rename = "as", default)]
+        r#as: Option<Type>,
+        #[darling(default)]
+        deserialize_as: Option<Type>,
+        #[darling(default)]
+        serialize_as: Option<Type>,
+    }
+
+    impl SerdeAsOptions {
+        fn has_any_set(&self) -> bool {
+            self.r#as.is_some() || self.deserialize_as.is_some() || self.serialize_as.is_some()
+        }
+    }
+
+    #[derive(FromField, Debug)]
+    #[darling(attributes(serde), allow_unknown_fields)]
+    struct SerdeOptions {
+        #[darling(default)]
+        with: Option<String>,
+        #[darling(default)]
+        deserialize_with: Option<String>,
+        #[darling(default)]
+        serialize_with: Option<String>,
+
+        #[darling(default)]
+        borrow: Option<Override<String>>,
+    }
+
+    impl SerdeOptions {
+        fn has_any_set(&self) -> bool {
+            self.with.is_some() || self.deserialize_with.is_some() || self.serialize_with.is_some()
+        }
+    }
+
+    // Check if there even is any `serde_as` attribute and exit early if not.
+    if !field
+        .attrs
+        .iter()
+        .any(|attr| attr.path.is_ident("serde_as"))
+    {
+        return Ok(());
+    }
+    let serde_as_options = SerdeAsOptions::from_field(field)?;
+    let serde_options = SerdeOptions::from_field(field)?;
+
+    let mut errors = Vec::new();
+    if !serde_as_options.has_any_set() {
+        errors.push(DarlingError::custom("An empty `serde_as` attribute on a field has no effect. You are missing an `as`, `serialize_as`, or `deserialize_as` parameter."));
+    }
+
+    // Check if there are any conflicting attributes
+    if serde_as_options.has_any_set() && serde_options.has_any_set() {
+        errors.push(DarlingError::custom("Cannot combine `serde_as` with serde's `with`, `deserialize_with`, or `serialize_with`."));
+    }
+
+    if serde_as_options.r#as.is_some() && serde_as_options.deserialize_as.is_some() {
+        errors.push(DarlingError::custom("Cannot combine `as` with `deserialize_as`. Use `serialize_as` to specify different serialization code."));
+    } else if serde_as_options.r#as.is_some() && serde_as_options.serialize_as.is_some() {
+        errors.push(DarlingError::custom("Cannot combine `as` with `serialize_as`. Use `deserialize_as` to specify different deserialization code."));
+    }
+
+    if !errors.is_empty() {
+        return Err(DarlingError::multiple(errors));
+    }
+
+    let type_same = &syn::parse_quote!(#serde_with_crate_path::Same);
+    let type_borrowcow = &syn::parse_quote!(BorrowCow);
+    if let Some(type_) = serde_as_options.r#as {
+        // If the field is not borrowed yet, check if we need to borrow it.
+        if serde_options.borrow.is_none() && has_type_embedded(&type_, type_borrowcow) {
+            let attr_borrow = parse_quote!(#[serde(borrow)]);
+            field.attrs.push(attr_borrow);
+        }
+
+        let replacement_type = replace_infer_type_with_type(type_, type_same);
+        let attr_inner_tokens = quote!(#serde_with_crate_path::As::<#replacement_type>).to_string();
+        let attr = parse_quote!(#[serde(with = #attr_inner_tokens)]);
+        field.attrs.push(attr);
+    }
+    if let Some(type_) = serde_as_options.deserialize_as {
+        // If the field is not borrowed yet, check if we need to borrow it.
+        if serde_options.borrow.is_none() && has_type_embedded(&type_, type_borrowcow) {
+            let attr_borrow = parse_quote!(#[serde(borrow)]);
+            field.attrs.push(attr_borrow);
+        }
+
+        let replacement_type = replace_infer_type_with_type(type_, type_same);
+        let attr_inner_tokens =
+            quote!(#serde_with_crate_path::As::<#replacement_type>::deserialize).to_string();
+        let attr = parse_quote!(#[serde(deserialize_with = #attr_inner_tokens)]);
+        field.attrs.push(attr);
+    }
+    if let Some(type_) = serde_as_options.serialize_as {
+        let replacement_type = replace_infer_type_with_type(type_, type_same);
+        let attr_inner_tokens =
+            quote!(#serde_with_crate_path::As::<#replacement_type>::serialize).to_string();
+        let attr = parse_quote!(#[serde(serialize_with = #attr_inner_tokens)]);
+        field.attrs.push(attr);
+    }
+
+    Ok(())
+}
+
+/// Recursively replace all occurrences of `_` with `replacement` in a [Type][]
+///
+/// The [serde_as][macro@serde_as] macro allows to use the infer type, i.e., `_`, as shortcut for `serde_with::As`.
+/// This function replaces all occurrences of the infer type with another type.
+fn replace_infer_type_with_type(to_replace: Type, replacement: &Type) -> Type {
+    match to_replace {
+        // Base case
+        // Replace the infer type with the actual replacement type
+        Type::Infer(_) => replacement.clone(),
+
+        // Recursive cases
+        // Iterate through all positions where a type could occur and recursively call this function
+        Type::Array(mut inner) => {
+            *inner.elem = replace_infer_type_with_type(*inner.elem, replacement);
+            Type::Array(inner)
+        }
+        Type::Group(mut inner) => {
+            *inner.elem = replace_infer_type_with_type(*inner.elem, replacement);
+            Type::Group(inner)
+        }
+        Type::Never(inner) => Type::Never(inner),
+        Type::Paren(mut inner) => {
+            *inner.elem = replace_infer_type_with_type(*inner.elem, replacement);
+            Type::Paren(inner)
+        }
+        Type::Path(mut inner) => {
+            match inner.path.segments.pop() {
+                Some(Pair::End(mut t)) | Some(Pair::Punctuated(mut t, _)) => {
+                    t.arguments = match t.arguments {
+                        PathArguments::None => PathArguments::None,
+                        PathArguments::AngleBracketed(mut inner) => {
+                            // Iterate over the args between the angle brackets
+                            inner.args = inner
+                                .args
+                                .into_iter()
+                                .map(|generic_argument| match generic_argument {
+                                    // replace types within the generics list, but leave other stuff like lifetimes untouched
+                                    GenericArgument::Type(type_) => GenericArgument::Type(
+                                        replace_infer_type_with_type(type_, replacement),
+                                    ),
+                                    ga => ga,
+                                })
+                                .collect();
+                            PathArguments::AngleBracketed(inner)
+                        }
+                        PathArguments::Parenthesized(mut inner) => {
+                            inner.inputs = inner
+                                .inputs
+                                .into_iter()
+                                .map(|type_| replace_infer_type_with_type(type_, replacement))
+                                .collect();
+                            inner.output = match inner.output {
+                                ReturnType::Type(arrow, mut type_) => {
+                                    *type_ = replace_infer_type_with_type(*type_, replacement);
+                                    ReturnType::Type(arrow, type_)
+                                }
+                                default => default,
+                            };
+                            PathArguments::Parenthesized(inner)
+                        }
+                    };
+                    inner.path.segments.push(t);
+                }
+                None => {}
+            }
+            Type::Path(inner)
+        }
+        Type::Ptr(mut inner) => {
+            *inner.elem = replace_infer_type_with_type(*inner.elem, replacement);
+            Type::Ptr(inner)
+        }
+        Type::Reference(mut inner) => {
+            *inner.elem = replace_infer_type_with_type(*inner.elem, replacement);
+            Type::Reference(inner)
+        }
+        Type::Slice(mut inner) => {
+            *inner.elem = replace_infer_type_with_type(*inner.elem, replacement);
+            Type::Slice(inner)
+        }
+        Type::Tuple(mut inner) => {
+            inner.elems = inner
+                .elems
+                .into_pairs()
+                .map(|pair| match pair {
+                    Pair::Punctuated(type_, p) => {
+                        Pair::Punctuated(replace_infer_type_with_type(type_, replacement), p)
+                    }
+                    Pair::End(type_) => Pair::End(replace_infer_type_with_type(type_, replacement)),
+                })
+                .collect();
+            Type::Tuple(inner)
+        }
+
+        // Pass unknown types or non-handleable types (e.g., bare Fn) without performing any replacements
+        type_ => type_,
+    }
+}
+
+/// Check if a type ending in the `syn::Ident` `embedded_type` is contained in `type_`.
+fn has_type_embedded(type_: &Type, embedded_type: &syn::Ident) -> bool {
+    match type_ {
+        // Base cases
+        Type::Infer(_) => false,
+        Type::Never(_inner) => false,
+
+        // Recursive cases
+        // Iterate through all positions where a type could occur and recursively call this function
+        Type::Array(inner) => has_type_embedded(&inner.elem, embedded_type),
+        Type::Group(inner) => has_type_embedded(&inner.elem, embedded_type),
+        Type::Paren(inner) => has_type_embedded(&inner.elem, embedded_type),
+        Type::Path(inner) => {
+            match inner.path.segments.last() {
+                Some(t) => {
+                    if t.ident == *embedded_type {
+                        return true;
+                    }
+
+                    match &t.arguments {
+                        PathArguments::None => false,
+                        PathArguments::AngleBracketed(inner) => {
+                            // Iterate over the args between the angle brackets
+                            inner
+                                .args
+                                .iter()
+                                .any(|generic_argument| match generic_argument {
+                                    // replace types within the generics list, but leave other stuff like lifetimes untouched
+                                    GenericArgument::Type(type_) => {
+                                        has_type_embedded(type_, embedded_type)
+                                    }
+                                    _ga => false,
+                                })
+                        }
+                        PathArguments::Parenthesized(inner) => {
+                            inner
+                                .inputs
+                                .iter()
+                                .any(|type_| has_type_embedded(type_, embedded_type))
+                                || match &inner.output {
+                                    ReturnType::Type(_arrow, type_) => {
+                                        has_type_embedded(type_, embedded_type)
+                                    }
+                                    _default => false,
+                                }
+                        }
+                    }
+                }
+                None => false,
+            }
+        }
+        Type::Ptr(inner) => has_type_embedded(&inner.elem, embedded_type),
+        Type::Reference(inner) => has_type_embedded(&inner.elem, embedded_type),
+        Type::Slice(inner) => has_type_embedded(&inner.elem, embedded_type),
+        Type::Tuple(inner) => inner.elems.pairs().any(|pair| match pair {
+            Pair::Punctuated(type_, _) | Pair::End(type_) => {
+                has_type_embedded(type_, embedded_type)
+            }
+        }),
+
+        // Pass unknown types or non-handleable types (e.g., bare Fn) without performing any replacements
+        _type_ => false,
+    }
+}
+
+/// Deserialize value by using its [`FromStr`] implementation
+///
+/// This is an alternative way to implement `Deserialize` for types which also implement [`FromStr`] by deserializing the type from string.
+/// Ensure that the struct/enum also implements [`FromStr`].
+/// If the implementation is missing, you will get an error message like
+/// ```text
+/// error[E0277]: the trait bound `Struct: std::str::FromStr` is not satisfied
+/// ```
+/// Additionally, `FromStr::Err` **must** implement [`Display`] as otherwise you will see a rather unhelpful error message
+///
+/// Serialization with [`Display`] is available with the matching [`SerializeDisplay`] derive.
+///
+/// # Attributes
+///
+/// Attributes for the derive can be specified via the `#[serde_with(...)]` attribute on the struct or enum.
+/// Currently, these arguments to the attribute are possible:
+///
+/// * **`#[serde_with(crate = "...")]`**: This allows using `DeserializeFromStr` when `serde_with` is not available from the crate root.
+///     This happens while [renaming dependencies in Cargo.toml][cargo-toml-rename] or when re-exporting the macro from a different crate.
+///
+///     This argument is analogue to [serde's crate argument][serde-crate] and the [crate argument to `serde_as`][serde-as-crate].
+///
+/// # Example
+///
+/// ```rust,ignore
+/// use std::str::FromStr;
+///
+/// #[derive(DeserializeFromStr)]
+/// struct A {
+///     a: u32,
+///     b: bool,
+/// }
+///
+/// impl FromStr for A {
+///     type Err = String;
+///
+///     /// Parse a value like `123<>true`
+///     fn from_str(s: &str) -> Result<Self, Self::Err> {
+///         let mut parts = s.split("<>");
+///         let number = parts
+///             .next()
+///             .ok_or_else(|| "Missing first value".to_string())?
+///             .parse()
+///             .map_err(|err: ParseIntError| err.to_string())?;
+///         let bool = parts
+///             .next()
+///             .ok_or_else(|| "Missing second value".to_string())?
+///             .parse()
+///             .map_err(|err: ParseBoolError| err.to_string())?;
+///         Ok(Self { a: number, b: bool })
+///     }
+/// }
+///
+/// let a: A = serde_json::from_str("\"159<>true\"").unwrap();
+/// assert_eq!(A { a: 159, b: true }, a);
+/// ```
+///
+/// [`Display`]: std::fmt::Display
+/// [`FromStr`]: std::str::FromStr
+/// [cargo-toml-rename]: https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#renaming-dependencies-in-cargotoml
+/// [serde-as-crate]: https://docs.rs/serde_with/1.12.1/serde_with/guide/serde_as/index.html#re-exporting-serde_as
+/// [serde-crate]: https://serde.rs/container-attrs.html#crate
+#[proc_macro_derive(DeserializeFromStr, attributes(serde_with))]
+pub fn derive_deserialize_fromstr(item: TokenStream) -> TokenStream {
+    let input: DeriveInput = parse_macro_input!(item);
+    let derive_options = match DeriveOptions::from_derive_input(&input) {
+        Ok(opt) => opt,
+        Err(err) => {
+            return err;
+        }
+    };
+    TokenStream::from(deserialize_fromstr(
+        input,
+        derive_options.get_serde_with_path(),
+    ))
+}
+
+fn deserialize_fromstr(mut input: DeriveInput, serde_with_crate_path: Path) -> TokenStream2 {
+    let ident = input.ident;
+    let where_clause = &mut input.generics.make_where_clause().predicates;
+    where_clause.push(parse_quote!(Self: ::std::str::FromStr));
+    where_clause.push(parse_quote!(
+        <Self as ::std::str::FromStr>::Err: ::std::fmt::Display
+    ));
+    let (de_impl_generics, ty_generics, where_clause) = split_with_de_lifetime(&input.generics);
+    quote! {
+        #[automatically_derived]
+        impl #de_impl_generics #serde_with_crate_path::serde::Deserialize<'de> for #ident #ty_generics #where_clause {
+            fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
+            where
+                D: #serde_with_crate_path::serde::Deserializer<'de>,
+            {
+                struct Helper<S>(::std::marker::PhantomData<S>);
+
+                impl<'de, S> #serde_with_crate_path::serde::de::Visitor<'de> for Helper<S>
+                where
+                    S: ::std::str::FromStr,
+                    <S as ::std::str::FromStr>::Err: ::std::fmt::Display,
+                {
+                    type Value = S;
+
+                    fn expecting(&self, formatter: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+                        ::std::write!(formatter, "string")
+                    }
+
+                    fn visit_str<E>(self, value: &str) -> ::std::result::Result<Self::Value, E>
+                    where
+                        E: #serde_with_crate_path::serde::de::Error,
+                    {
+                        value.parse::<Self::Value>().map_err(#serde_with_crate_path::serde::de::Error::custom)
+                    }
+
+                    fn visit_bytes<E>(self, value: &[u8]) -> ::std::result::Result<Self::Value, E>
+                    where
+                        E: #serde_with_crate_path::serde::de::Error,
+                    {
+                        let utf8 = ::std::str::from_utf8(value).map_err(#serde_with_crate_path::serde::de::Error::custom)?;
+                        self.visit_str(utf8)
+                    }
+                }
+
+                deserializer.deserialize_str(Helper(::std::marker::PhantomData))
+            }
+        }
+    }
+}
+
+/// Serialize value by using it's [`Display`] implementation
+///
+/// This is an alternative way to implement `Serialize` for types which also implement [`Display`] by serializing the type as string.
+/// Ensure that the struct/enum also implements [`Display`].
+/// If the implementation is missing, you will get an error message like
+/// ```text
+/// error[E0277]: `Struct` doesn't implement `std::fmt::Display`
+/// ```
+///
+/// Deserialization with [`FromStr`] is available with the matching [`DeserializeFromStr`] derive.
+///
+/// # Attributes
+///
+/// Attributes for the derive can be specified via the `#[serde_with(...)]` attribute on the struct or enum.
+/// Currently, these arguments to the attribute are possible:
+///
+/// * **`#[serde_with(crate = "...")]`**: This allows using `SerializeDisplay` when `serde_with` is not available from the crate root.
+///     This happens while [renaming dependencies in Cargo.toml][cargo-toml-rename] or when re-exporting the macro from a different crate.
+///
+///     This argument is analogue to [serde's crate argument][serde-crate] and the [crate argument to `serde_as`][serde-as-crate].
+///
+/// # Example
+///
+/// ```rust,ignore
+/// use std::fmt;
+///
+/// #[derive(SerializeDisplay)]
+/// struct A {
+///     a: u32,
+///     b: bool,
+/// }
+///
+/// impl fmt::Display for A {
+///     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+///         write!(f, "{}<>{}", self.a, self.b)
+///     }
+/// }
+///
+/// let a = A { a: 123, b: false };
+/// assert_eq!(r#""123<>false""#, serde_json::to_string(&a).unwrap());
+/// ```
+///
+/// [`Display`]: std::fmt::Display
+/// [`FromStr`]: std::str::FromStr
+/// [cargo-toml-rename]: https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#renaming-dependencies-in-cargotoml
+/// [serde-as-crate]: https://docs.rs/serde_with/1.12.1/serde_with/guide/serde_as/index.html#re-exporting-serde_as
+/// [serde-crate]: https://serde.rs/container-attrs.html#crate
+#[proc_macro_derive(SerializeDisplay, attributes(serde_with))]
+pub fn derive_serialize_display(item: TokenStream) -> TokenStream {
+    let input: DeriveInput = parse_macro_input!(item);
+    let derive_options = match DeriveOptions::from_derive_input(&input) {
+        Ok(opt) => opt,
+        Err(err) => {
+            return err;
+        }
+    };
+    TokenStream::from(serialize_display(
+        input,
+        derive_options.get_serde_with_path(),
+    ))
+}
+
+fn serialize_display(mut input: DeriveInput, serde_with_crate_path: Path) -> TokenStream2 {
+    let ident = input.ident;
+    input
+        .generics
+        .make_where_clause()
+        .predicates
+        .push(parse_quote!(Self: ::std::fmt::Display));
+    let (impl_generics, ty_generics, where_clause) = input.generics.split_for_impl();
+    quote! {
+        #[automatically_derived]
+        impl #impl_generics #serde_with_crate_path::serde::Serialize for #ident #ty_generics #where_clause {
+            fn serialize<S>(&self, serializer: S) -> ::std::result::Result<S::Ok, S::Error>
+            where
+                S: #serde_with_crate_path::serde::Serializer,
+            {
+                serializer.collect_str(&self)
+            }
+        }
+    }
+}
+
+#[doc(hidden)]
+/// Private function. Not part of the public API
+///
+/// The only task of this derive macro is to consume any `serde_as` attributes and turn them into inert attributes.
+/// This allows the serde_as macro to keep the field attributes without causing compiler errors.
+/// The intend is that keeping the field attributes allows downstream crates to consume and act on them without causing an ordering dependency to the serde_as macro.
+/// Otherwise, downstream proc-macros would need to be placed *in front of* the main `#[serde_as]` attribute, since otherwise the field attributes would already be stripped off.
+///
+/// More details about the use-cases in the Github discussion: <https://github.com/jonasbb/serde_with/discussions/260>.
+#[proc_macro_derive(__private_consume_serde_as_attributes, attributes(serde_as))]
+pub fn __private_consume_serde_as_attributes(_: TokenStream) -> TokenStream {
+    TokenStream::new()
+}
diff --git a/third_party/rust/serde_with_macros/src/utils.rs b/third_party/rust/serde_with_macros/src/utils.rs
new file mode 100644
index 0000000000..d7a380af63
--- /dev/null
+++ b/third_party/rust/serde_with_macros/src/utils.rs
@@ -0,0 +1,77 @@
+use darling::FromDeriveInput;
+use proc_macro::TokenStream;
+use proc_macro2::TokenStream as TokenStream2;
+use quote::ToTokens;
+use std::iter::Iterator;
+use syn::{parse_quote, Error, Generics, Path, TypeGenerics};
+
+/// Merge multiple [`syn::Error`] into one.
+pub(crate) trait IteratorExt {
+    fn collect_error(self) -> Result<(), Error>
+    where
+        Self: Iterator<Item = Result<(), Error>> + Sized,
+    {
+        let accu = Ok(());
+        self.fold(accu, |accu, error| match (accu, error) {
+            (Ok(()), error) => error,
+            (accu, Ok(())) => accu,
+            (Err(mut err), Err(error)) => {
+                err.combine(error);
+                Err(err)
+            }
+        })
+    }
+}
+impl<I> IteratorExt for I where I: Iterator<Item = Result<(), Error>> + Sized {}
+
+/// Attributes usable for derive macros
+#[derive(FromDeriveInput, Debug)]
+#[darling(attributes(serde_with))]
+pub(crate) struct DeriveOptions {
+    /// Path to the crate
+    #[darling(rename = "crate", default)]
+    pub(crate) alt_crate_path: Option<Path>,
+}
+
+impl DeriveOptions {
+    pub(crate) fn from_derive_input(input: &syn::DeriveInput) -> Result<Self, TokenStream> {
+        match <Self as FromDeriveInput>::from_derive_input(input) {
+            Ok(v) => Ok(v),
+            Err(e) => Err(TokenStream::from(e.write_errors())),
+        }
+    }
+
+    pub(crate) fn get_serde_with_path(&self) -> Path {
+        self.alt_crate_path
+            .clone()
+            .unwrap_or_else(|| syn::parse_str("::serde_with").unwrap())
+    }
+}
+
+// Inspired by https://github.com/serde-rs/serde/blob/fb2fe409c8f7ad6c95e3096e5e9ede865c8cfb49/serde_derive/src/de.rs#L3120
+// Serde is also licences Apache 2 + MIT
+pub(crate) fn split_with_de_lifetime(
+    generics: &Generics,
+) -> (
+    DeImplGenerics<'_>,
+    TypeGenerics<'_>,
+    Option<&syn::WhereClause>,
+) {
+    let de_impl_generics = DeImplGenerics(generics);
+    let (_, ty_generics, where_clause) = generics.split_for_impl();
+    (de_impl_generics, ty_generics, where_clause)
+}
+
+pub(crate) struct DeImplGenerics<'a>(&'a Generics);
+
+impl<'a> ToTokens for DeImplGenerics<'a> {
+    fn to_tokens(&self, tokens: &mut TokenStream2) {
+        let mut generics = self.0.clone();
+        generics.params = Some(parse_quote!('de))
+            .into_iter()
+            .chain(generics.params)
+            .collect();
+        let (impl_generics, _, _) = generics.split_for_impl();
+        impl_generics.to_tokens(tokens);
+    }
+}