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回退 'Pull Request !3 : serde 1.0.136升级至1.0.197'

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openharmony_ci 2024-04-02 03:29:53 +00:00 committed by Gitee
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140
.github/workflows/ci.yml vendored
View File

@ -3,12 +3,8 @@ name: CI
on:
push:
pull_request:
workflow_dispatch:
schedule: [cron: "40 1 * * *"]
permissions:
contents: read
env:
RUSTFLAGS: -Dwarnings
@ -16,18 +12,16 @@ jobs:
test:
name: Test suite
runs-on: ubuntu-latest
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@nightly
- run: cd test_suite && cargo test --features unstable
windows:
name: Test suite (windows)
runs-on: windows-latest
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@nightly
- run: cd test_suite && cargo test --features unstable -- --skip ui --exact
@ -38,14 +32,15 @@ jobs:
fail-fast: false
matrix:
rust: [stable, beta]
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@master
with:
toolchain: ${{matrix.rust}}
- run: cd serde && cargo build --features rc
- run: cd serde && cargo build --no-default-features
- run: cd serde_test && cargo build
- run: cd serde_test && cargo test --features serde/derive,serde/rc
nightly:
name: Rust nightly ${{matrix.os == 'windows' && '(windows)' || ''}}
@ -54,22 +49,33 @@ jobs:
fail-fast: false
matrix:
os: [ubuntu, windows]
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@nightly
- run: cd serde && cargo build
- run: cd serde && cargo build --no-default-features
- run: cd serde && cargo build --no-default-features --features alloc
- run: cd serde && cargo build --no-default-features --features rc,alloc
- run: cd serde && cargo build --no-default-features --features unstable
- run: cd serde && cargo test --features derive,rc,unstable
- run: cd test_suite/no_std && cargo build
if: matrix.os != 'windows'
- run: cd serde_derive && cargo check --tests
env:
RUSTFLAGS: --cfg exhaustive ${{env.RUSTFLAGS}}
if: matrix.os != 'windows'
msrv:
name: Rust 1.13.0
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@1.13.0
- name: Get timestamp for cache
id: date
run: echo ::set-output name=yearmo::$(date +%Y%m)
- uses: actions/cache@v1
with:
path: ~/.cargo/registry/index
key: cargo-registry-index-${{steps.date.outputs.yearmo}}
- run: cd serde && cargo build --features rc
- run: cd serde && cargo build --no-default-features
- run: cd serde_test && cargo build
build:
name: Rust ${{matrix.rust}}
@ -77,24 +83,38 @@ jobs:
strategy:
fail-fast: false
matrix:
rust: [1.31.0, 1.34.0]
timeout-minutes: 45
rust: [1.19.0, 1.20.0, 1.21.0, 1.25.0, 1.26.0, 1.34.0]
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@master
with:
toolchain: ${{matrix.rust}}
- run: cd serde && cargo build --features rc
- run: cd serde && cargo build --no-default-features
- run: cd serde && cargo build
more:
name: Rust ${{matrix.rust}}
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
rust: [1.27.0, 1.28.0]
steps:
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@master
with:
toolchain: ${{matrix.rust}}
# Work around failing to parse manifest because editions are unstable.
- run: sed -i /test_suite/d Cargo.toml
- run: cd serde && cargo build --no-default-features
- run: cd serde && cargo build
derive:
name: Rust 1.56.0
name: Rust 1.31.0
runs-on: ubuntu-latest
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@1.56.0
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@1.31.0
- run: cd serde && cargo check --no-default-features
- run: cd serde && cargo check
- run: cd serde_derive && cargo check
@ -102,71 +122,43 @@ jobs:
alloc:
name: Rust 1.36.0
runs-on: ubuntu-latest
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@1.36.0
- run: cd serde && cargo build --no-default-features --features alloc
minimal:
name: Minimal versions
emscripten:
name: Emscripten
runs-on: ubuntu-latest
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@nightly
- run: cargo generate-lockfile -Z minimal-versions
- run: cargo check --locked --workspace
doc:
name: Documentation
runs-on: ubuntu-latest
timeout-minutes: 45
env:
RUSTDOCFLAGS: -Dwarnings
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@nightly
- uses: dtolnay/install@cargo-docs-rs
- run: cargo docs-rs -p serde
- run: cargo docs-rs -p serde_derive
- run: cargo docs-rs -p serde_derive_internals
- uses: actions/setup-node@v1
with:
node-version: 9
- name: Install cargo-web
run: |
CARGO_WEB_RELEASE=$(curl -L -s -H Accept:application/json https://github.com/koute/cargo-web/releases/latest)
CARGO_WEB_VERSION=$(echo "${CARGO_WEB_RELEASE}" | jq -r .tag_name)
CARGO_WEB_URL="https://github.com/koute/cargo-web/releases/download/${CARGO_WEB_VERSION}/cargo-web-x86_64-unknown-linux-gnu.gz"
mkdir -p ~/.cargo/bin
curl -L "${CARGO_WEB_URL}" | gzip -d > ~/.cargo/bin/cargo-web
chmod +x ~/.cargo/bin/cargo-web
- run: cd test_suite && cargo web test --target=asmjs-unknown-emscripten --nodejs
continue-on-error: true
- run: cd test_suite && cargo web test --target=wasm32-unknown-emscripten --nodejs
continue-on-error: true
clippy:
name: Clippy
runs-on: ubuntu-latest
if: github.event_name != 'pull_request'
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- uses: dtolnay/rust-toolchain@clippy
- run: cd serde && cargo clippy --features rc,unstable -- -Dclippy::all -Dclippy::pedantic
- run: cd serde_derive && cargo clippy -- -Dclippy::all -Dclippy::pedantic
- run: cd serde_derive_internals && cargo clippy -- -Dclippy::all -Dclippy::pedantic
- run: cd serde_test && cargo clippy -- -Dclippy::all -Dclippy::pedantic
- run: cd test_suite && cargo clippy --tests --features unstable -- -Dclippy::all -Dclippy::pedantic
- run: cd test_suite/no_std && cargo clippy -- -Dclippy::all -Dclippy::pedantic
miri:
name: Miri
runs-on: ubuntu-latest
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@miri
- run: cargo miri setup
- run: cd serde && cargo miri test --features derive,rc,unstable
env:
MIRIFLAGS: -Zmiri-strict-provenance
- run: cd test_suite && cargo miri test --features unstable
env:
MIRIFLAGS: -Zmiri-strict-provenance
outdated:
name: Outdated
runs-on: ubuntu-latest
if: github.event_name != 'pull_request'
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: dtolnay/install@cargo-outdated
- run: cargo outdated --workspace --exit-code 1

9
Cargo.toml
View File

@ -3,13 +3,6 @@ members = [
"serde",
"serde_derive",
"serde_derive_internals",
"serde_test",
"test_suite",
]
[patch.crates-io]
serde = { path = "serde" }
[workspace.dependencies]
proc-macro2 = { version = "1.0.74", default-features = false }
quote = { version = "1.0.35", default-features = false }
syn = { version = "2.0.46", default-features = false }

25
LICENSE-APACHE
View File

@ -174,3 +174,28 @@ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

2
README.OpenSource
View File

@ -3,7 +3,7 @@
"Name": "serde",
"License": "Apache License V2.0",
"License File": "LICENSE-APACHE",
"Version Number": "1.0.197",
"Version Number": "1.0.136",
"Owner": "xuelei3@huawei.com",
"Upstream URL": "https://github.com/serde-rs/serde",
"Description": "A generic serialization/deserialization framework."

14
README.md
View File

@ -1,13 +1,13 @@
# Serde   [![Build Status]][actions] [![Latest Version]][crates.io] [![serde msrv]][Rust 1.31] [![serde_derive msrv]][Rust 1.56]
# Serde   [![Build Status]][actions] [![Latest Version]][crates.io] [![serde: rustc 1.13+]][Rust 1.13] [![serde_derive: rustc 1.31+]][Rust 1.31]
[Build Status]: https://img.shields.io/github/actions/workflow/status/serde-rs/serde/ci.yml?branch=master
[Build Status]: https://img.shields.io/github/workflow/status/serde-rs/serde/CI/master
[actions]: https://github.com/serde-rs/serde/actions?query=branch%3Amaster
[Latest Version]: https://img.shields.io/crates/v/serde.svg
[crates.io]: https://crates.io/crates/serde
[serde msrv]: https://img.shields.io/crates/msrv/serde.svg?label=serde%20msrv&color=lightgray
[serde_derive msrv]: https://img.shields.io/crates/msrv/serde_derive.svg?label=serde_derive%20msrv&color=lightgray
[serde: rustc 1.13+]: https://img.shields.io/badge/serde-rustc_1.13+-lightgray.svg
[serde_derive: rustc 1.31+]: https://img.shields.io/badge/serde_derive-rustc_1.31+-lightgray.svg
[Rust 1.13]: https://blog.rust-lang.org/2016/11/10/Rust-1.13.html
[Rust 1.31]: https://blog.rust-lang.org/2018/12/06/Rust-1.31-and-rust-2018.html
[Rust 1.56]: https://blog.rust-lang.org/2021/10/21/Rust-1.56.0.html
**Serde is a framework for *ser*ializing and *de*serializing Rust data structures efficiently and generically.**
@ -19,7 +19,7 @@ You may be looking for:
- [Data formats supported by Serde](https://serde.rs/#data-formats)
- [Setting up `#[derive(Serialize, Deserialize)]`](https://serde.rs/derive.html)
- [Examples](https://serde.rs/examples.html)
- [API documentation](https://docs.rs/serde)
- [API documentation](https://docs.serde.rs/serde/)
- [Release notes](https://github.com/serde-rs/serde/releases)
## Serde in action
@ -48,7 +48,7 @@ serde_json = "1.0"
<p></p>
```rust
use serde::{Deserialize, Serialize};
use serde::{Serialize, Deserialize};
#[derive(Serialize, Deserialize, Debug)]
struct Point {

4
crates-io.md
View File

@ -10,13 +10,13 @@ You may be looking for:
- [Data formats supported by Serde](https://serde.rs/#data-formats)
- [Setting up `#[derive(Serialize, Deserialize)]`](https://serde.rs/derive.html)
- [Examples](https://serde.rs/examples.html)
- [API documentation](https://docs.rs/serde)
- [API documentation](https://docs.serde.rs/serde/)
- [Release notes](https://github.com/serde-rs/serde/releases)
## Serde in action
```rust
use serde::{Deserialize, Serialize};
use serde::{Serialize, Deserialize};
#[derive(Serialize, Deserialize, Debug)]
struct Point {

4
serde/BUILD.gn
View File

@ -19,8 +19,8 @@ ohos_cargo_crate("lib") {
crate_root = "src/lib.rs"
sources = [ "src/lib.rs" ]
edition = "2018"
cargo_pkg_version = "1.0.195"
edition = "2015"
cargo_pkg_version = "1.0.136"
cargo_pkg_authors = "Erick Tryzelaar <erick.tryzelaar@gmail.com>, David Tolnay <dtolnay@gmail.com>"
cargo_pkg_name = "serde"
cargo_pkg_description = "A generic serialization/deserialization framework"

37
serde/Cargo.toml
View File

@ -1,43 +1,30 @@
[package]
name = "serde"
version = "1.0.197"
version = "1.0.136" # remember to update html_root_url and serde_derive dependency
authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
build = "build.rs"
categories = ["encoding", "no-std", "no-std::no-alloc"]
description = "A generic serialization/deserialization framework"
documentation = "https://docs.rs/serde"
edition = "2018"
homepage = "https://serde.rs"
keywords = ["serde", "serialization", "no_std"]
rust-version = "1.15"
license = "MIT OR Apache-2.0"
readme = "crates-io.md"
description = "A generic serialization/deserialization framework"
homepage = "https://serde.rs"
repository = "https://github.com/serde-rs/serde"
rust-version = "1.31"
documentation = "https://docs.serde.rs/serde/"
keywords = ["serde", "serialization", "no_std"]
categories = ["encoding"]
readme = "crates-io.md"
include = ["build.rs", "src/**/*.rs", "crates-io.md", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
build = "build.rs"
[dependencies]
serde_derive = { version = "1", optional = true, path = "../serde_derive" }
serde_derive = { version = "=1.0.136", optional = true, path = "../serde_derive" }
[dev-dependencies]
serde_derive = { version = "1", path = "../serde_derive" }
[lib]
doc-scrape-examples = false
serde_derive = { version = "1.0", path = "../serde_derive" }
[package.metadata.playground]
features = ["derive", "rc"]
[package.metadata.docs.rs]
features = ["derive", "rc", "unstable"]
targets = ["x86_64-unknown-linux-gnu"]
rustdoc-args = ["--cfg", "doc_cfg", "--generate-link-to-definition"]
# This cfg cannot be enabled, but it still forces Cargo to keep serde_derive's
# version in lockstep with serde's, even if someone depends on the two crates
# separately with serde's "derive" feature disabled. Every serde_derive release
# is compatible with exactly one serde release because the generated code
# involves nonpublic APIs which are not bound by semver.
[target.'cfg(any())'.dependencies]
serde_derive = { version = "=1.0.197", path = "../serde_derive" }
### FEATURES #################################################################

120
serde/build.rs
View File

@ -6,8 +6,6 @@ use std::str::{self, FromStr};
// opening a GitHub issue if your build environment requires some way to enable
// these cfgs other than by executing our build script.
fn main() {
println!("cargo:rerun-if-changed=build.rs");
let minor = match rustc_minor_version() {
Some(minor) => minor,
None => return,
@ -16,6 +14,73 @@ fn main() {
let target = env::var("TARGET").unwrap();
let emscripten = target == "asmjs-unknown-emscripten" || target == "wasm32-unknown-emscripten";
// std::collections::Bound was stabilized in Rust 1.17
// but it was moved to core::ops later in Rust 1.26:
// https://doc.rust-lang.org/core/ops/enum.Bound.html
if minor < 26 {
println!("cargo:rustc-cfg=no_ops_bound");
if minor < 17 {
println!("cargo:rustc-cfg=no_collections_bound");
}
}
// core::cmp::Reverse stabilized in Rust 1.19:
// https://doc.rust-lang.org/stable/core/cmp/struct.Reverse.html
if minor < 19 {
println!("cargo:rustc-cfg=no_core_reverse");
}
// CString::into_boxed_c_str and PathBuf::into_boxed_path stabilized in Rust 1.20:
// https://doc.rust-lang.org/std/ffi/struct.CString.html#method.into_boxed_c_str
// https://doc.rust-lang.org/std/path/struct.PathBuf.html#method.into_boxed_path
if minor < 20 {
println!("cargo:rustc-cfg=no_de_boxed_c_str");
println!("cargo:rustc-cfg=no_de_boxed_path");
}
// From<Box<T>> for Rc<T> / Arc<T> stabilized in Rust 1.21:
// https://doc.rust-lang.org/std/rc/struct.Rc.html#impl-From<Box<T>>
// https://doc.rust-lang.org/std/sync/struct.Arc.html#impl-From<Box<T>>
if minor < 21 {
println!("cargo:rustc-cfg=no_de_rc_dst");
}
// Duration available in core since Rust 1.25:
// https://blog.rust-lang.org/2018/03/29/Rust-1.25.html#library-stabilizations
if minor < 25 {
println!("cargo:rustc-cfg=no_core_duration");
}
// 128-bit integers stabilized in Rust 1.26:
// https://blog.rust-lang.org/2018/05/10/Rust-1.26.html
//
// Disabled on Emscripten targets before Rust 1.40 since
// Emscripten did not support 128-bit integers until Rust 1.40
// (https://github.com/rust-lang/rust/pull/65251)
if minor < 26 || emscripten && minor < 40 {
println!("cargo:rustc-cfg=no_integer128");
}
// Inclusive ranges methods stabilized in Rust 1.27:
// https://github.com/rust-lang/rust/pull/50758
// Also Iterator::try_for_each:
// https://blog.rust-lang.org/2018/06/21/Rust-1.27.html#library-stabilizations
if minor < 27 {
println!("cargo:rustc-cfg=no_range_inclusive");
println!("cargo:rustc-cfg=no_iterator_try_fold");
}
// Non-zero integers stabilized in Rust 1.28:
// https://blog.rust-lang.org/2018/08/02/Rust-1.28.html#library-stabilizations
if minor < 28 {
println!("cargo:rustc-cfg=no_num_nonzero");
}
// Current minimum supported version of serde_derive crate is Rust 1.31.
if minor < 31 {
println!("cargo:rustc-cfg=no_serde_derive");
}
// TryFrom, Atomic types, non-zero signed integers, and SystemTime::checked_add
// stabilized in Rust 1.34:
// https://blog.rust-lang.org/2019/04/11/Rust-1.34.0.html#tryfrom-and-tryinto
@ -24,45 +89,24 @@ fn main() {
println!("cargo:rustc-cfg=no_core_try_from");
println!("cargo:rustc-cfg=no_num_nonzero_signed");
println!("cargo:rustc-cfg=no_systemtime_checked_add");
println!("cargo:rustc-cfg=no_relaxed_trait_bounds");
}
// f32::copysign and f64::copysign stabilized in Rust 1.35.
// https://blog.rust-lang.org/2019/05/23/Rust-1.35.0.html#copy-the-sign-of-a-floating-point-number-onto-another
if minor < 35 {
println!("cargo:rustc-cfg=no_float_copysign");
// Whitelist of archs that support std::sync::atomic module. Ideally we
// would use #[cfg(target_has_atomic = "...")] but it is not stable yet.
// Instead this is based on rustc's compiler/rustc_target/src/spec/*.rs.
let has_atomic64 = target.starts_with("x86_64")
|| target.starts_with("i686")
|| target.starts_with("aarch64")
|| target.starts_with("powerpc64")
|| target.starts_with("sparc64")
|| target.starts_with("mips64el")
|| target.starts_with("riscv64");
let has_atomic32 = has_atomic64 || emscripten;
if minor < 34 || !has_atomic64 {
println!("cargo:rustc-cfg=no_std_atomic64");
}
// Current minimum supported version of serde_derive crate is Rust 1.56.
if minor < 56 {
println!("cargo:rustc-cfg=no_serde_derive");
}
// Support for #[cfg(target_has_atomic = "...")] stabilized in Rust 1.60.
if minor < 60 {
println!("cargo:rustc-cfg=no_target_has_atomic");
// Allowlist of archs that support std::sync::atomic module. This is
// based on rustc's compiler/rustc_target/src/spec/*.rs.
let has_atomic64 = target.starts_with("x86_64")
|| target.starts_with("i686")
|| target.starts_with("aarch64")
|| target.starts_with("powerpc64")
|| target.starts_with("sparc64")
|| target.starts_with("mips64el")
|| target.starts_with("riscv64");
let has_atomic32 = has_atomic64 || emscripten;
if minor < 34 || !has_atomic64 {
println!("cargo:rustc-cfg=no_std_atomic64");
}
if minor < 34 || !has_atomic32 {
println!("cargo:rustc-cfg=no_std_atomic");
}
}
// Support for core::ffi::CStr and alloc::ffi::CString stabilized in Rust 1.64.
// https://blog.rust-lang.org/2022/09/22/Rust-1.64.0.html#c-compatible-ffi-types-in-core-and-alloc
if minor < 64 {
println!("cargo:rustc-cfg=no_core_cstr");
if minor < 34 || !has_atomic32 {
println!("cargo:rustc-cfg=no_std_atomic");
}
}

6
serde/src/de/format.rs
View File

@ -1,7 +1,7 @@
use crate::lib::fmt::{self, Write};
use crate::lib::str;
use lib::fmt::{self, Write};
use lib::str;
pub(super) struct Buf<'a> {
pub struct Buf<'a> {
bytes: &'a mut [u8],
offset: usize,
}

39
serde/src/de/ignored_any.rs
View File

@ -1,6 +1,6 @@
use crate::lib::*;
use lib::*;
use crate::de::{
use de::{
Deserialize, Deserializer, EnumAccess, Error, MapAccess, SeqAccess, VariantAccess, Visitor,
};
@ -10,12 +10,13 @@ use crate::de::{
/// any type, except that it does not store any information about the data that
/// gets deserialized.
///
/// ```edition2021
/// ```edition2018
/// use std::fmt;
/// use std::marker::PhantomData;
///
/// use serde::de::{
/// self, Deserialize, DeserializeSeed, Deserializer, IgnoredAny, SeqAccess, Visitor,
/// };
/// use std::fmt;
/// use std::marker::PhantomData;
///
/// /// A seed that can be used to deserialize only the `n`th element of a sequence
/// /// while efficiently discarding elements of any type before or after index `n`.
@ -107,7 +108,7 @@ use crate::de::{
/// # Ok(())
/// # }
/// ```
#[derive(Copy, Clone, Debug, Default, PartialEq)]
#[derive(Copy, Clone, Debug, Default)]
pub struct IgnoredAny;
impl<'de> Visitor<'de> for IgnoredAny {
@ -129,10 +130,12 @@ impl<'de> Visitor<'de> for IgnoredAny {
Ok(IgnoredAny)
}
#[inline]
fn visit_i128<E>(self, x: i128) -> Result<Self::Value, E> {
let _ = x;
Ok(IgnoredAny)
serde_if_integer128! {
#[inline]
fn visit_i128<E>(self, x: i128) -> Result<Self::Value, E> {
let _ = x;
Ok(IgnoredAny)
}
}
#[inline]
@ -141,10 +144,12 @@ impl<'de> Visitor<'de> for IgnoredAny {
Ok(IgnoredAny)
}
#[inline]
fn visit_u128<E>(self, x: u128) -> Result<Self::Value, E> {
let _ = x;
Ok(IgnoredAny)
serde_if_integer128! {
#[inline]
fn visit_u128<E>(self, x: u128) -> Result<Self::Value, E> {
let _ = x;
Ok(IgnoredAny)
}
}
#[inline]
@ -193,7 +198,7 @@ impl<'de> Visitor<'de> for IgnoredAny {
where
A: SeqAccess<'de>,
{
while let Some(IgnoredAny) = tri!(seq.next_element()) {
while let Some(IgnoredAny) = try!(seq.next_element()) {
// Gobble
}
Ok(IgnoredAny)
@ -204,7 +209,7 @@ impl<'de> Visitor<'de> for IgnoredAny {
where
A: MapAccess<'de>,
{
while let Some((IgnoredAny, IgnoredAny)) = tri!(map.next_entry()) {
while let Some((IgnoredAny, IgnoredAny)) = try!(map.next_entry()) {
// Gobble
}
Ok(IgnoredAny)
@ -223,7 +228,7 @@ impl<'de> Visitor<'de> for IgnoredAny {
where
A: EnumAccess<'de>,
{
tri!(data.variant::<IgnoredAny>()).1.newtype_variant()
data.variant::<IgnoredAny>()?.1.newtype_variant()
}
}

829
serde/src/de/impls.rs
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284
serde/src/de/mod.rs
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@ -30,7 +30,7 @@
//! # The Deserializer trait
//!
//! [`Deserializer`] implementations are provided by third-party crates, for
//! example [`serde_json`], [`serde_yaml`] and [`postcard`].
//! example [`serde_json`], [`serde_yaml`] and [`bincode`].
//!
//! A partial list of well-maintained formats is given on the [Serde
//! website][data formats].
@ -64,8 +64,8 @@
//! - RefCell\<T\>
//! - Mutex\<T\>
//! - RwLock\<T\>
//! - Rc\<T\>&emsp;*(if* features = \["rc"\] *is enabled)*
//! - Arc\<T\>&emsp;*(if* features = \["rc"\] *is enabled)*
//! - Rc\<T\>&emsp;*(if* features = ["rc"] *is enabled)*
//! - Arc\<T\>&emsp;*(if* features = ["rc"] *is enabled)*
//! - **Collection types**:
//! - BTreeMap\<K, V\>
//! - BTreeSet\<T\>
@ -104,7 +104,7 @@
//! [`Deserialize`]: ../trait.Deserialize.html
//! [`Deserializer`]: ../trait.Deserializer.html
//! [`LinkedHashMap<K, V>`]: https://docs.rs/linked-hash-map/*/linked_hash_map/struct.LinkedHashMap.html
//! [`postcard`]: https://github.com/jamesmunns/postcard
//! [`bincode`]: https://github.com/servo/bincode
//! [`linked-hash-map`]: https://crates.io/crates/linked-hash-map
//! [`serde_derive`]: https://crates.io/crates/serde_derive
//! [`serde_json`]: https://github.com/serde-rs/json
@ -112,28 +112,26 @@
//! [derive section of the manual]: https://serde.rs/derive.html
//! [data formats]: https://serde.rs/#data-formats
use crate::lib::*;
use lib::*;
////////////////////////////////////////////////////////////////////////////////
pub mod value;
#[cfg(not(no_integer128))]
mod format;
mod ignored_any;
mod impls;
pub(crate) mod size_hint;
mod utf8;
pub use self::ignored_any::IgnoredAny;
#[cfg(not(any(feature = "std", feature = "unstable")))]
#[doc(no_inline)]
pub use crate::std_error::Error as StdError;
#[cfg(all(feature = "unstable", not(feature = "std")))]
#[doc(no_inline)]
pub use core::error::Error as StdError;
#[cfg(feature = "std")]
#[doc(no_inline)]
pub use std::error::Error as StdError;
#[cfg(not(feature = "std"))]
#[doc(no_inline)]
pub use std_error::Error as StdError;
////////////////////////////////////////////////////////////////////////////////
@ -164,7 +162,7 @@ macro_rules! declare_error_trait {
///
/// The message should not be capitalized and should not end with a period.
///
/// ```edition2021
/// ```edition2018
/// # use std::str::FromStr;
/// #
/// # struct IpAddr;
@ -309,7 +307,7 @@ declare_error_trait!(Error: Sized + Debug + Display);
/// This is used as an argument to the `invalid_type`, `invalid_value`, and
/// `invalid_length` methods of the `Error` trait to build error messages.
///
/// ```edition2021
/// ```edition2018
/// # use std::fmt;
/// #
/// # use serde::de::{self, Unexpected, Visitor};
@ -402,20 +400,20 @@ impl<'a> fmt::Display for Unexpected<'a> {
Bool(b) => write!(formatter, "boolean `{}`", b),
Unsigned(i) => write!(formatter, "integer `{}`", i),
Signed(i) => write!(formatter, "integer `{}`", i),
Float(f) => write!(formatter, "floating point `{}`", WithDecimalPoint(f)),
Float(f) => write!(formatter, "floating point `{}`", f),
Char(c) => write!(formatter, "character `{}`", c),
Str(s) => write!(formatter, "string {:?}", s),
Bytes(_) => formatter.write_str("byte array"),
Unit => formatter.write_str("unit value"),
Option => formatter.write_str("Option value"),
NewtypeStruct => formatter.write_str("newtype struct"),
Seq => formatter.write_str("sequence"),
Map => formatter.write_str("map"),
Enum => formatter.write_str("enum"),
UnitVariant => formatter.write_str("unit variant"),
NewtypeVariant => formatter.write_str("newtype variant"),
TupleVariant => formatter.write_str("tuple variant"),
StructVariant => formatter.write_str("struct variant"),
Bytes(_) => write!(formatter, "byte array"),
Unit => write!(formatter, "unit value"),
Option => write!(formatter, "Option value"),
NewtypeStruct => write!(formatter, "newtype struct"),
Seq => write!(formatter, "sequence"),
Map => write!(formatter, "map"),
Enum => write!(formatter, "enum"),
UnitVariant => write!(formatter, "unit variant"),
NewtypeVariant => write!(formatter, "newtype variant"),
TupleVariant => write!(formatter, "tuple variant"),
StructVariant => write!(formatter, "struct variant"),
Other(other) => formatter.write_str(other),
}
}
@ -434,10 +432,11 @@ impl<'a> fmt::Display for Unexpected<'a> {
/// Within the context of a `Visitor` implementation, the `Visitor` itself
/// (`&self`) is an implementation of this trait.
///
/// ```edition2021
/// # use serde::de::{self, Unexpected, Visitor};
/// ```edition2018
/// # use std::fmt;
/// #
/// # use serde::de::{self, Unexpected, Visitor};
/// #
/// # struct Example;
/// #
/// # impl<'de> Visitor<'de> for Example {
@ -458,7 +457,7 @@ impl<'a> fmt::Display for Unexpected<'a> {
///
/// Outside of a `Visitor`, `&"..."` can be used.
///
/// ```edition2021
/// ```edition2018
/// # use serde::de::{self, Unexpected};
/// #
/// # fn example<E>() -> Result<(), E>
@ -466,10 +465,7 @@ impl<'a> fmt::Display for Unexpected<'a> {
/// # E: de::Error,
/// # {
/// # let v = true;
/// return Err(de::Error::invalid_type(
/// Unexpected::Bool(v),
/// &"a negative integer",
/// ));
/// return Err(de::Error::invalid_type(Unexpected::Bool(v), &"a negative integer"));
/// # }
/// ```
pub trait Expected {
@ -505,8 +501,8 @@ impl<'a> Display for Expected + 'a {
/// by Serde.
///
/// Serde provides `Deserialize` implementations for many Rust primitive and
/// standard library types. The complete list is [here][crate::de]. All of these
/// can be deserialized using Serde out of the box.
/// standard library types. The complete list is [here][de]. All of these can
/// be deserialized using Serde out of the box.
///
/// Additionally, Serde provides a procedural macro called `serde_derive` to
/// automatically generate `Deserialize` implementations for structs and enums
@ -522,6 +518,7 @@ impl<'a> Display for Expected + 'a {
/// `LinkedHashMap<K, V>` type that is deserializable by Serde because the crate
/// provides an implementation of `Deserialize` for it.
///
/// [de]: https://docs.serde.rs/serde/de/index.html
/// [derive]: https://serde.rs/derive.html
/// [impl-deserialize]: https://serde.rs/impl-deserialize.html
///
@ -568,7 +565,7 @@ pub trait Deserialize<'de>: Sized {
D: Deserializer<'de>,
{
// Default implementation just delegates to `deserialize` impl.
*place = tri!(Deserialize::deserialize(deserializer));
*place = Deserialize::deserialize(deserializer)?;
Ok(())
}
}
@ -581,7 +578,7 @@ pub trait Deserialize<'de>: Sized {
/// from the input string, but a `from_reader` function may only deserialize
/// owned data.
///
/// ```edition2021
/// ```edition2018
/// # use serde::de::{Deserialize, DeserializeOwned};
/// # use std::io::{Read, Result};
/// #
@ -620,7 +617,7 @@ impl<T> DeserializeOwned for T where T: for<'de> Deserialize<'de> {}
///
/// The canonical API for stateless deserialization looks like this:
///
/// ```edition2021
/// ```edition2018
/// # use serde::Deserialize;
/// #
/// # enum Error {}
@ -634,7 +631,7 @@ impl<T> DeserializeOwned for T where T: for<'de> Deserialize<'de> {}
/// Adjusting an API like this to support stateful deserialization is a matter
/// of accepting a seed as input:
///
/// ```edition2021
/// ```edition2018
/// # use serde::de::DeserializeSeed;
/// #
/// # enum Error {}
@ -667,11 +664,12 @@ impl<T> DeserializeOwned for T where T: for<'de> Deserialize<'de> {}
/// into it. This requires stateful deserialization using the `DeserializeSeed`
/// trait.
///
/// ```edition2021
/// use serde::de::{Deserialize, DeserializeSeed, Deserializer, SeqAccess, Visitor};
/// ```edition2018
/// use std::fmt;
/// use std::marker::PhantomData;
///
/// use serde::de::{Deserialize, DeserializeSeed, Deserializer, SeqAccess, Visitor};
///
/// // A DeserializeSeed implementation that uses stateful deserialization to
/// // append array elements onto the end of an existing vector. The preexisting
/// // state ("seed") in this case is the Vec<T>. The `deserialize` method of
@ -710,11 +708,6 @@ impl<T> DeserializeOwned for T where T: for<'de> Deserialize<'de> {}
/// where
/// A: SeqAccess<'de>,
/// {
/// // Decrease the number of reallocations if there are many elements
/// if let Some(size_hint) = seq.size_hint() {
/// self.0.reserve(size_hint);
/// }
///
/// // Visit each element in the inner array and push it onto
/// // the existing vector.
/// while let Some(elem) = seq.next_element()? {
@ -864,10 +857,10 @@ where
/// The `Deserializer` trait supports two entry point styles which enables
/// different kinds of deserialization.
///
/// 1. The `deserialize_any` method. Self-describing data formats like JSON are
/// able to look at the serialized data and tell what it represents. For
/// example the JSON deserializer may see an opening curly brace (`{`) and
/// know that it is seeing a map. If the data format supports
/// 1. The `deserialize` method. Self-describing data formats like JSON are able
/// to look at the serialized data and tell what it represents. For example
/// the JSON deserializer may see an opening curly brace (`{`) and know that
/// it is seeing a map. If the data format supports
/// `Deserializer::deserialize_any`, it will drive the Visitor using whatever
/// type it sees in the input. JSON uses this approach when deserializing
/// `serde_json::Value` which is an enum that can represent any JSON
@ -876,7 +869,7 @@ where
/// `Deserializer::deserialize_any`.
///
/// 2. The various `deserialize_*` methods. Non-self-describing formats like
/// Postcard need to be told what is in the input in order to deserialize it.
/// Bincode need to be told what is in the input in order to deserialize it.
/// The `deserialize_*` methods are hints to the deserializer for how to
/// interpret the next piece of input. Non-self-describing formats are not
/// able to deserialize something like `serde_json::Value` which relies on
@ -886,7 +879,7 @@ where
/// `Deserializer::deserialize_any` unless you need to be told by the
/// Deserializer what type is in the input. Know that relying on
/// `Deserializer::deserialize_any` means your data type will be able to
/// deserialize from self-describing formats only, ruling out Postcard and many
/// deserialize from self-describing formats only, ruling out Bincode and many
/// others.
///
/// [Serde data model]: https://serde.rs/data-model.html
@ -917,7 +910,7 @@ pub trait Deserializer<'de>: Sized {
/// `Deserializer::deserialize_any` unless you need to be told by the
/// Deserializer what type is in the input. Know that relying on
/// `Deserializer::deserialize_any` means your data type will be able to
/// deserialize from self-describing formats only, ruling out Postcard and
/// deserialize from self-describing formats only, ruling out Bincode and
/// many others.
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
@ -948,15 +941,18 @@ pub trait Deserializer<'de>: Sized {
where
V: Visitor<'de>;
/// Hint that the `Deserialize` type is expecting an `i128` value.
///
/// The default behavior unconditionally returns an error.
fn deserialize_i128<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
let _ = visitor;
Err(Error::custom("i128 is not supported"))
serde_if_integer128! {
/// Hint that the `Deserialize` type is expecting an `i128` value.
///
/// This method is available only on Rust compiler versions >=1.26. The
/// default behavior unconditionally returns an error.
fn deserialize_i128<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>
{
let _ = visitor;
Err(Error::custom("i128 is not supported"))
}
}
/// Hint that the `Deserialize` type is expecting a `u8` value.
@ -979,15 +975,18 @@ pub trait Deserializer<'de>: Sized {
where
V: Visitor<'de>;
/// Hint that the `Deserialize` type is expecting an `u128` value.
///
/// The default behavior unconditionally returns an error.
fn deserialize_u128<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
let _ = visitor;
Err(Error::custom("u128 is not supported"))
serde_if_integer128! {
/// Hint that the `Deserialize` type is expecting an `u128` value.
///
/// This method is available only on Rust compiler versions >=1.26. The
/// default behavior unconditionally returns an error.
fn deserialize_u128<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>
{
let _ = visitor;
Err(Error::custom("u128 is not supported"))
}
}
/// Hint that the `Deserialize` type is expecting a `f32` value.
@ -1152,10 +1151,10 @@ pub trait Deserializer<'de>: Sized {
/// Some types have a human-readable form that may be somewhat expensive to
/// construct, as well as a binary form that is compact and efficient.
/// Generally text-based formats like JSON and YAML will prefer to use the
/// human-readable one and binary formats like Postcard will prefer the
/// human-readable one and binary formats like Bincode will prefer the
/// compact one.
///
/// ```edition2021
/// ```edition2018
/// # use std::ops::Add;
/// # use std::str::FromStr;
/// #
@ -1222,11 +1221,11 @@ pub trait Deserializer<'de>: Sized {
#[doc(hidden)]
fn __deserialize_content<V>(
self,
_: crate::actually_private::T,
_: ::actually_private::T,
visitor: V,
) -> Result<crate::__private::de::Content<'de>, Self::Error>
) -> Result<::private::de::Content<'de>, Self::Error>
where
V: Visitor<'de, Value = crate::__private::de::Content<'de>>,
V: Visitor<'de, Value = ::private::de::Content<'de>>,
{
self.deserialize_any(visitor)
}
@ -1246,10 +1245,11 @@ pub trait Deserializer<'de>: Sized {
///
/// # Example
///
/// ```edition2021
/// # use serde::de::{self, Unexpected, Visitor};
/// ```edition2018
/// # use std::fmt;
/// #
/// # use serde::de::{self, Unexpected, Visitor};
/// #
/// /// A visitor that deserializes a long string - a string containing at least
/// /// some minimum number of bytes.
/// struct LongString {
@ -1286,7 +1286,7 @@ pub trait Visitor<'de>: Sized {
/// "an integer between 0 and 64". The message should not be capitalized and
/// should not end with a period.
///
/// ```edition2021
/// ```edition2018
/// # use std::fmt;
/// #
/// # struct S {
@ -1359,20 +1359,20 @@ pub trait Visitor<'de>: Sized {
Err(Error::invalid_type(Unexpected::Signed(v), &self))
}
/// The input contains a `i128`.
///
/// The default implementation fails with a type error.
fn visit_i128<E>(self, v: i128) -> Result<Self::Value, E>
where
E: Error,
{
let mut buf = [0u8; 58];
let mut writer = format::Buf::new(&mut buf);
fmt::Write::write_fmt(&mut writer, format_args!("integer `{}` as i128", v)).unwrap();
Err(Error::invalid_type(
Unexpected::Other(writer.as_str()),
&self,
))
serde_if_integer128! {
/// The input contains a `i128`.
///
/// This method is available only on Rust compiler versions >=1.26. The
/// default implementation fails with a type error.
fn visit_i128<E>(self, v: i128) -> Result<Self::Value, E>
where
E: Error,
{
let mut buf = [0u8; 58];
let mut writer = format::Buf::new(&mut buf);
fmt::Write::write_fmt(&mut writer, format_args!("integer `{}` as i128", v)).unwrap();
Err(Error::invalid_type(Unexpected::Other(writer.as_str()), &self))
}
}
/// The input contains a `u8`.
@ -1421,20 +1421,20 @@ pub trait Visitor<'de>: Sized {
Err(Error::invalid_type(Unexpected::Unsigned(v), &self))
}
/// The input contains a `u128`.
///
/// The default implementation fails with a type error.
fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E>
where
E: Error,
{
let mut buf = [0u8; 57];
let mut writer = format::Buf::new(&mut buf);
fmt::Write::write_fmt(&mut writer, format_args!("integer `{}` as u128", v)).unwrap();
Err(Error::invalid_type(
Unexpected::Other(writer.as_str()),
&self,
))
serde_if_integer128! {
/// The input contains a `u128`.
///
/// This method is available only on Rust compiler versions >=1.26. The
/// default implementation fails with a type error.
fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E>
where
E: Error,
{
let mut buf = [0u8; 57];
let mut writer = format::Buf::new(&mut buf);
fmt::Write::write_fmt(&mut writer, format_args!("integer `{}` as u128", v)).unwrap();
Err(Error::invalid_type(Unexpected::Other(writer.as_str()), &self))
}
}
/// The input contains an `f32`.
@ -1470,7 +1470,7 @@ pub trait Visitor<'de>: Sized {
where
E: Error,
{
self.visit_str(v.encode_utf8(&mut [0u8; 4]))
self.visit_str(utf8::encode(v).as_str())
}
/// The input contains a string. The lifetime of the string is ephemeral and
@ -1525,7 +1525,6 @@ pub trait Visitor<'de>: Sized {
/// `String`.
#[inline]
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
where
E: Error,
@ -1548,6 +1547,7 @@ pub trait Visitor<'de>: Sized {
where
E: Error,
{
let _ = v;
Err(Error::invalid_type(Unexpected::Bytes(v), &self))
}
@ -1555,7 +1555,7 @@ pub trait Visitor<'de>: Sized {
/// `Deserializer`.
///
/// This enables zero-copy deserialization of bytes in some formats. For
/// example Postcard data containing bytes can be deserialized with zero
/// example Bincode data containing bytes can be deserialized with zero
/// copying into a `&'a [u8]` as long as the input data outlives `'a`.
///
/// The default implementation forwards to `visit_bytes`.
@ -1584,7 +1584,6 @@ pub trait Visitor<'de>: Sized {
/// The default implementation forwards to `visit_bytes` and then drops the
/// `Vec<u8>`.
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
where
E: Error,
@ -1828,9 +1827,9 @@ pub trait MapAccess<'de> {
K: DeserializeSeed<'de>,
V: DeserializeSeed<'de>,
{
match tri!(self.next_key_seed(kseed)) {
match try!(self.next_key_seed(kseed)) {
Some(key) => {
let value = tri!(self.next_value_seed(vseed));
let value = try!(self.next_value_seed(vseed));
Ok(Some((key, value)))
}
None => Ok(None),
@ -2032,7 +2031,7 @@ pub trait VariantAccess<'de>: Sized {
/// If the data contains a different type of variant, the following
/// `invalid_type` error should be constructed:
///
/// ```edition2021
/// ```edition2018
/// # use serde::de::{self, value, DeserializeSeed, Visitor, VariantAccess, Unexpected};
/// #
/// # struct X;
@ -2072,7 +2071,7 @@ pub trait VariantAccess<'de>: Sized {
/// If the data contains a different type of variant, the following
/// `invalid_type` error should be constructed:
///
/// ```edition2021
/// ```edition2018
/// # use serde::de::{self, value, DeserializeSeed, Visitor, VariantAccess, Unexpected};
/// #
/// # struct X;
@ -2128,7 +2127,7 @@ pub trait VariantAccess<'de>: Sized {
/// If the data contains a different type of variant, the following
/// `invalid_type` error should be constructed:
///
/// ```edition2021
/// ```edition2018
/// # use serde::de::{self, value, DeserializeSeed, Visitor, VariantAccess, Unexpected};
/// #
/// # struct X;
@ -2145,7 +2144,11 @@ pub trait VariantAccess<'de>: Sized {
/// # T: DeserializeSeed<'de>,
/// # { unimplemented!() }
/// #
/// fn tuple_variant<V>(self, _len: usize, _visitor: V) -> Result<V::Value, Self::Error>
/// fn tuple_variant<V>(
/// self,
/// _len: usize,
/// _visitor: V,
/// ) -> Result<V::Value, Self::Error>
/// where
/// V: Visitor<'de>,
/// {
@ -2171,7 +2174,7 @@ pub trait VariantAccess<'de>: Sized {
/// If the data contains a different type of variant, the following
/// `invalid_type` error should be constructed:
///
/// ```edition2021
/// ```edition2018
/// # use serde::de::{self, value, DeserializeSeed, Visitor, VariantAccess, Unexpected};
/// #
/// # struct X;
@ -2231,10 +2234,10 @@ pub trait VariantAccess<'de>: Sized {
///
/// # Example
///
/// ```edition2021
/// use serde::de::{value, Deserialize, IntoDeserializer};
/// use serde_derive::Deserialize;
/// ```edition2018
/// use std::str::FromStr;
/// use serde::Deserialize;
/// use serde::de::{value, IntoDeserializer};
///
/// #[derive(Deserialize)]
/// enum Setting {
@ -2278,48 +2281,15 @@ impl Display for OneOf {
1 => write!(formatter, "`{}`", self.names[0]),
2 => write!(formatter, "`{}` or `{}`", self.names[0], self.names[1]),
_ => {
tri!(formatter.write_str("one of "));
try!(write!(formatter, "one of "));
for (i, alt) in self.names.iter().enumerate() {
if i > 0 {
tri!(formatter.write_str(", "));
try!(write!(formatter, ", "));
}
tri!(write!(formatter, "`{}`", alt));
try!(write!(formatter, "`{}`", alt));
}
Ok(())
}
}
}
}
struct WithDecimalPoint(f64);
impl Display for WithDecimalPoint {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
struct LookForDecimalPoint<'f, 'a> {
formatter: &'f mut fmt::Formatter<'a>,
has_decimal_point: bool,
}
impl<'f, 'a> fmt::Write for LookForDecimalPoint<'f, 'a> {
fn write_str(&mut self, fragment: &str) -> fmt::Result {
self.has_decimal_point |= fragment.contains('.');
self.formatter.write_str(fragment)
}
fn write_char(&mut self, ch: char) -> fmt::Result {
self.has_decimal_point |= ch == '.';
self.formatter.write_char(ch)
}
}
let mut writer = LookForDecimalPoint {
formatter,
has_decimal_point: false,
};
tri!(write!(writer, "{}", self.0));
if !writer.has_decimal_point {
tri!(formatter.write_str(".0"));
}
Ok(())
}
}

2
serde/src/de/seed.rs
View File

@ -1,4 +1,4 @@
use crate::de::{Deserialize, DeserializeSeed, Deserializer};
use de::{Deserialize, DeserializeSeed, Deserializer};
/// A DeserializeSeed helper for implementing deserialize_in_place Visitors.
///

46
serde/src/de/utf8.rs Normal file
View File

@ -0,0 +1,46 @@
use lib::*;
const TAG_CONT: u8 = 0b1000_0000;
const TAG_TWO_B: u8 = 0b1100_0000;
const TAG_THREE_B: u8 = 0b1110_0000;
const TAG_FOUR_B: u8 = 0b1111_0000;
const MAX_ONE_B: u32 = 0x80;
const MAX_TWO_B: u32 = 0x800;
const MAX_THREE_B: u32 = 0x10000;
#[inline]
pub fn encode(c: char) -> Encode {
let code = c as u32;
let mut buf = [0; 4];
let pos = if code < MAX_ONE_B {
buf[3] = code as u8;
3
} else if code < MAX_TWO_B {
buf[2] = (code >> 6 & 0x1F) as u8 | TAG_TWO_B;
buf[3] = (code & 0x3F) as u8 | TAG_CONT;
2
} else if code < MAX_THREE_B {
buf[1] = (code >> 12 & 0x0F) as u8 | TAG_THREE_B;
buf[2] = (code >> 6 & 0x3F) as u8 | TAG_CONT;
buf[3] = (code & 0x3F) as u8 | TAG_CONT;
1
} else {
buf[0] = (code >> 18 & 0x07) as u8 | TAG_FOUR_B;
buf[1] = (code >> 12 & 0x3F) as u8 | TAG_CONT;
buf[2] = (code >> 6 & 0x3F) as u8 | TAG_CONT;
buf[3] = (code & 0x3F) as u8 | TAG_CONT;
0
};
Encode { buf: buf, pos: pos }
}
pub struct Encode {
buf: [u8; 4],
pos: usize,
}
impl Encode {
pub fn as_str(&self) -> &str {
str::from_utf8(&self.buf[self.pos..]).unwrap()
}
}

179
serde/src/de/value.rs
View File

@ -1,10 +1,10 @@
//! Building blocks for deserializing basic values using the `IntoDeserializer`
//! trait.
//!
//! ```edition2021
//! use serde::de::{value, Deserialize, IntoDeserializer};
//! use serde_derive::Deserialize;
//! ```edition2018
//! use std::str::FromStr;
//! use serde::Deserialize;
//! use serde::de::{value, IntoDeserializer};
//!
//! #[derive(Deserialize)]
//! enum Setting {
@ -21,11 +21,12 @@
//! }
//! ```
use crate::lib::*;
use lib::*;
use self::private::{First, Second};
use crate::de::{self, size_hint, Deserializer, Expected, IntoDeserializer, SeqAccess, Visitor};
use crate::ser;
use __private::size_hint;
use de::{self, Deserializer, Expected, IntoDeserializer, SeqAccess, Visitor};
use ser;
////////////////////////////////////////////////////////////////////////////////
@ -112,7 +113,6 @@ impl Debug for Error {
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl error::Error for Error {
fn description(&self) -> &str {
&self.err
@ -128,7 +128,9 @@ where
type Deserializer = UnitDeserializer<E>;
fn into_deserializer(self) -> UnitDeserializer<E> {
UnitDeserializer::new()
UnitDeserializer {
marker: PhantomData,
}
}
}
@ -139,15 +141,6 @@ pub struct UnitDeserializer<E> {
impl_copy_clone!(UnitDeserializer);
impl<E> UnitDeserializer<E> {
#[allow(missing_docs)]
pub fn new() -> Self {
UnitDeserializer {
marker: PhantomData,
}
}
}
impl<'de, E> de::Deserializer<'de> for UnitDeserializer<E>
where
E: de::Error,
@ -185,14 +178,12 @@ impl<E> Debug for UnitDeserializer<E> {
/// A deserializer that cannot be instantiated.
#[cfg(feature = "unstable")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "unstable")))]
pub struct NeverDeserializer<E> {
never: !,
marker: PhantomData<E>,
}
#[cfg(feature = "unstable")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "unstable")))]
impl<'de, E> IntoDeserializer<'de, E> for !
where
E: de::Error,
@ -245,15 +236,8 @@ macro_rules! primitive_deserializer {
type Deserializer = $name<E>;
fn into_deserializer(self) -> $name<E> {
$name::new(self)
}
}
impl<E> $name<E> {
#[allow(missing_docs)]
pub fn new(value: $ty) -> Self {
$name {
value,
value: self,
marker: PhantomData,
}
}
@ -295,17 +279,20 @@ primitive_deserializer!(i8, "an `i8`.", I8Deserializer, visit_i8);
primitive_deserializer!(i16, "an `i16`.", I16Deserializer, visit_i16);
primitive_deserializer!(i32, "an `i32`.", I32Deserializer, visit_i32);
primitive_deserializer!(i64, "an `i64`.", I64Deserializer, visit_i64);
primitive_deserializer!(i128, "an `i128`.", I128Deserializer, visit_i128);
primitive_deserializer!(isize, "an `isize`.", IsizeDeserializer, visit_i64 as i64);
primitive_deserializer!(u8, "a `u8`.", U8Deserializer, visit_u8);
primitive_deserializer!(u16, "a `u16`.", U16Deserializer, visit_u16);
primitive_deserializer!(u64, "a `u64`.", U64Deserializer, visit_u64);
primitive_deserializer!(u128, "a `u128`.", U128Deserializer, visit_u128);
primitive_deserializer!(usize, "a `usize`.", UsizeDeserializer, visit_u64 as u64);
primitive_deserializer!(f32, "an `f32`.", F32Deserializer, visit_f32);
primitive_deserializer!(f64, "an `f64`.", F64Deserializer, visit_f64);
primitive_deserializer!(char, "a `char`.", CharDeserializer, visit_char);
serde_if_integer128! {
primitive_deserializer!(i128, "an `i128`.", I128Deserializer, visit_i128);
primitive_deserializer!(u128, "a `u128`.", U128Deserializer, visit_u128);
}
/// A deserializer holding a `u32`.
pub struct U32Deserializer<E> {
value: u32,
@ -321,15 +308,8 @@ where
type Deserializer = U32Deserializer<E>;
fn into_deserializer(self) -> U32Deserializer<E> {
U32Deserializer::new(self)
}
}
impl<E> U32Deserializer<E> {
#[allow(missing_docs)]
pub fn new(value: u32) -> Self {
U32Deserializer {
value,
value: self,
marker: PhantomData,
}
}
@ -410,15 +390,8 @@ where
type Deserializer = StrDeserializer<'a, E>;
fn into_deserializer(self) -> StrDeserializer<'a, E> {
StrDeserializer::new(self)
}
}
impl<'a, E> StrDeserializer<'a, E> {
#[allow(missing_docs)]
pub fn new(value: &'a str) -> Self {
StrDeserializer {
value,
value: self,
marker: PhantomData,
}
}
@ -497,7 +470,7 @@ impl<'de, E> BorrowedStrDeserializer<'de, E> {
/// Create a new borrowed deserializer from the given string.
pub fn new(value: &'de str) -> BorrowedStrDeserializer<'de, E> {
BorrowedStrDeserializer {
value,
value: value,
marker: PhantomData,
}
}
@ -565,7 +538,6 @@ impl<'de, E> Debug for BorrowedStrDeserializer<'de, E> {
/// A deserializer holding a `String`.
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
pub struct StringDeserializer<E> {
value: String,
marker: PhantomData<E>,
@ -582,7 +554,6 @@ impl<E> Clone for StringDeserializer<E> {
}
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
impl<'de, E> IntoDeserializer<'de, E> for String
where
E: de::Error,
@ -590,16 +561,8 @@ where
type Deserializer = StringDeserializer<E>;
fn into_deserializer(self) -> StringDeserializer<E> {
StringDeserializer::new(self)
}
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<E> StringDeserializer<E> {
#[allow(missing_docs)]
pub fn new(value: String) -> Self {
StringDeserializer {
value,
value: self,
marker: PhantomData,
}
}
@ -641,7 +604,7 @@ where
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'de, E> de::EnumAccess<'de> for StringDeserializer<E>
impl<'de, 'a, E> de::EnumAccess<'de> for StringDeserializer<E>
where
E: de::Error,
{
@ -670,7 +633,6 @@ impl<E> Debug for StringDeserializer<E> {
/// A deserializer holding a `Cow<str>`.
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
pub struct CowStrDeserializer<'a, E> {
value: Cow<'a, str>,
marker: PhantomData<E>,
@ -687,7 +649,6 @@ impl<'a, E> Clone for CowStrDeserializer<'a, E> {
}
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
impl<'de, 'a, E> IntoDeserializer<'de, E> for Cow<'a, str>
where
E: de::Error,
@ -695,16 +656,8 @@ where
type Deserializer = CowStrDeserializer<'a, E>;
fn into_deserializer(self) -> CowStrDeserializer<'a, E> {
CowStrDeserializer::new(self)
}
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'a, E> CowStrDeserializer<'a, E> {
#[allow(missing_docs)]
pub fn new(value: Cow<'a, str>) -> Self {
CowStrDeserializer {
value,
value: self,
marker: PhantomData,
}
}
@ -786,7 +739,7 @@ impl<'a, E> BytesDeserializer<'a, E> {
/// Create a new deserializer from the given bytes.
pub fn new(value: &'a [u8]) -> Self {
BytesDeserializer {
value,
value: value,
marker: PhantomData,
}
}
@ -845,7 +798,7 @@ impl<'de, E> BorrowedBytesDeserializer<'de, E> {
/// Create a new borrowed deserializer from the given borrowed bytes.
pub fn new(value: &'de [u8]) -> Self {
BorrowedBytesDeserializer {
value,
value: value,
marker: PhantomData,
}
}
@ -940,8 +893,8 @@ where
where
V: de::Visitor<'de>,
{
let v = tri!(visitor.visit_seq(&mut self));
tri!(self.end());
let v = try!(visitor.visit_seq(&mut self));
try!(self.end());
Ok(v)
}
@ -983,7 +936,7 @@ struct ExpectedInSeq(usize);
impl Expected for ExpectedInSeq {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
if self.0 == 1 {
formatter.write_str("1 element in sequence")
write!(formatter, "1 element in sequence")
} else {
write!(formatter, "{} elements in sequence", self.0)
}
@ -1006,7 +959,6 @@ where
////////////////////////////////////////////////////////////////////////////////
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
impl<'de, T, E> IntoDeserializer<'de, E> for Vec<T>
where
T: IntoDeserializer<'de, E>,
@ -1020,7 +972,6 @@ where
}
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
impl<'de, T, E> IntoDeserializer<'de, E> for BTreeSet<T>
where
T: IntoDeserializer<'de, E> + Eq + Ord,
@ -1034,7 +985,6 @@ where
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl<'de, T, S, E> IntoDeserializer<'de, E> for HashSet<T, S>
where
T: IntoDeserializer<'de, E> + Eq + Hash,
@ -1059,7 +1009,7 @@ pub struct SeqAccessDeserializer<A> {
impl<A> SeqAccessDeserializer<A> {
/// Construct a new `SeqAccessDeserializer<A>`.
pub fn new(seq: A) -> Self {
SeqAccessDeserializer { seq }
SeqAccessDeserializer { seq: seq }
}
}
@ -1168,8 +1118,8 @@ where
where
V: de::Visitor<'de>,
{
let value = tri!(visitor.visit_map(&mut self));
tri!(self.end());
let value = try!(visitor.visit_map(&mut self));
try!(self.end());
Ok(value)
}
@ -1177,8 +1127,8 @@ where
where
V: de::Visitor<'de>,
{
let value = tri!(visitor.visit_seq(&mut self));
tri!(self.end());
let value = try!(visitor.visit_seq(&mut self));
try!(self.end());
Ok(value)
}
@ -1242,8 +1192,8 @@ where
{
match self.next_pair() {
Some((key, value)) => {
let key = tri!(kseed.deserialize(key.into_deserializer()));
let value = tri!(vseed.deserialize(value.into_deserializer()));
let key = try!(kseed.deserialize(key.into_deserializer()));
let value = try!(vseed.deserialize(value.into_deserializer()));
Ok(Some((key, value)))
}
None => Ok(None),
@ -1347,7 +1297,7 @@ where
V: de::Visitor<'de>,
{
let mut pair_visitor = PairVisitor(Some(self.0), Some(self.1), PhantomData);
let pair = tri!(visitor.visit_seq(&mut pair_visitor));
let pair = try!(visitor.visit_seq(&mut pair_visitor));
if pair_visitor.1.is_none() {
Ok(pair)
} else {
@ -1411,7 +1361,7 @@ struct ExpectedInMap(usize);
impl Expected for ExpectedInMap {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
if self.0 == 1 {
formatter.write_str("1 element in map")
write!(formatter, "1 element in map")
} else {
write!(formatter, "{} elements in map", self.0)
}
@ -1421,7 +1371,6 @@ impl Expected for ExpectedInMap {
////////////////////////////////////////////////////////////////////////////////
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
impl<'de, K, V, E> IntoDeserializer<'de, E> for BTreeMap<K, V>
where
K: IntoDeserializer<'de, E> + Eq + Ord,
@ -1436,7 +1385,6 @@ where
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl<'de, K, V, S, E> IntoDeserializer<'de, E> for HashMap<K, V, S>
where
K: IntoDeserializer<'de, E> + Eq + Hash,
@ -1462,7 +1410,7 @@ pub struct MapAccessDeserializer<A> {
impl<A> MapAccessDeserializer<A> {
/// Construct a new `MapAccessDeserializer<A>`.
pub fn new(map: A) -> Self {
MapAccessDeserializer { map }
MapAccessDeserializer { map: map }
}
}
@ -1509,7 +1457,7 @@ where
where
T: de::DeserializeSeed<'de>,
{
match tri!(self.map.next_key_seed(seed)) {
match self.map.next_key_seed(seed)? {
Some(key) => Ok((key, private::map_as_enum(self.map))),
None => Err(de::Error::invalid_type(de::Unexpected::Map, &"enum")),
}
@ -1518,47 +1466,10 @@ where
////////////////////////////////////////////////////////////////////////////////
/// A deserializer holding an `EnumAccess`.
#[derive(Clone, Debug)]
pub struct EnumAccessDeserializer<A> {
access: A,
}
impl<A> EnumAccessDeserializer<A> {
/// Construct a new `EnumAccessDeserializer<A>`.
pub fn new(access: A) -> Self {
EnumAccessDeserializer { access }
}
}
impl<'de, A> de::Deserializer<'de> for EnumAccessDeserializer<A>
where
A: de::EnumAccess<'de>,
{
type Error = A::Error;
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: de::Visitor<'de>,
{
visitor.visit_enum(self.access)
}
forward_to_deserialize_any! {
bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
bytes byte_buf option unit unit_struct newtype_struct seq tuple
tuple_struct map struct enum identifier ignored_any
}
}
////////////////////////////////////////////////////////////////////////////////
mod private {
use crate::lib::*;
use lib::*;
use crate::de::{
self, DeserializeSeed, Deserializer, MapAccess, Unexpected, VariantAccess, Visitor,
};
use de::{self, DeserializeSeed, Deserializer, MapAccess, Unexpected, VariantAccess, Visitor};
pub struct UnitOnly<E> {
marker: PhantomData<E>,
@ -1623,7 +1534,7 @@ mod private {
}
pub fn map_as_enum<A>(map: A) -> MapAsEnum<A> {
MapAsEnum { map }
MapAsEnum { map: map }
}
impl<'de, A> VariantAccess<'de> for MapAsEnum<A>
@ -1647,7 +1558,10 @@ mod private {
where
V: Visitor<'de>,
{
self.map.next_value_seed(SeedTupleVariant { len, visitor })
self.map.next_value_seed(SeedTupleVariant {
len: len,
visitor: visitor,
})
}
fn struct_variant<V>(
@ -1658,7 +1572,8 @@ mod private {
where
V: Visitor<'de>,
{
self.map.next_value_seed(SeedStructVariant { visitor })
self.map
.next_value_seed(SeedStructVariant { visitor: visitor })
}
}

79
serde/src/integer128.rs
View File

@ -1,9 +1,82 @@
// No longer used. Old versions of serde used this macro for supporting targets
// that did not yet have 128-bit integer support.
/// Conditional compilation depending on whether Serde is built with support for
/// 128-bit integers.
///
/// Data formats that wish to support Rust compiler versions older than 1.26
/// (or targets that lack 128-bit integers) may place the i128 / u128 methods
/// of their Serializer and Deserializer behind this macro.
///
/// Data formats that require a minimum Rust compiler version of at least 1.26,
/// or do not target platforms that lack 128-bit integers, do not need to
/// bother with this macro and may assume support for 128-bit integers.
///
/// ```edition2018
/// # use serde::__private::doc::Error;
/// #
/// # struct MySerializer;
/// #
/// use serde::{serde_if_integer128, Serializer};
///
/// impl Serializer for MySerializer {
/// type Ok = ();
/// type Error = Error;
///
/// fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error> {
/// /* ... */
/// # unimplemented!()
/// }
///
/// /* ... */
///
/// serde_if_integer128! {
/// fn serialize_i128(self, v: i128) -> Result<Self::Ok, Self::Error> {
/// /* ... */
/// # unimplemented!()
/// }
///
/// fn serialize_u128(self, v: u128) -> Result<Self::Ok, Self::Error> {
/// /* ... */
/// # unimplemented!()
/// }
/// }
/// #
/// # serde::__serialize_unimplemented! {
/// # bool i8 i16 i32 u8 u16 u32 u64 f32 f64 char str bytes none some
/// # unit unit_struct unit_variant newtype_struct newtype_variant seq
/// # tuple tuple_struct tuple_variant map struct struct_variant
/// # }
/// }
/// ```
///
/// When Serde is built with support for 128-bit integers, this macro expands
/// transparently into just the input tokens.
///
/// ```edition2018
/// macro_rules! serde_if_integer128 {
/// ($($tt:tt)*) => {
/// $($tt)*
/// };
/// }
/// ```
///
/// When built without support for 128-bit integers, this macro expands to
/// nothing.
///
/// ```edition2018
/// macro_rules! serde_if_integer128 {
/// ($($tt:tt)*) => {};
/// }
/// ```
#[cfg(not(no_integer128))]
#[macro_export]
#[doc(hidden)]
macro_rules! serde_if_integer128 {
($($tt:tt)*) => {
$($tt)*
};
}
#[cfg(no_integer128)]
#[macro_export]
#[doc(hidden)]
macro_rules! serde_if_integer128 {
($($tt:tt)*) => {};
}

219
serde/src/lib.rs
View File

@ -31,7 +31,8 @@
//! for Serde by the community.
//!
//! - [JSON], the ubiquitous JavaScript Object Notation used by many HTTP APIs.
//! - [Postcard], a no\_std and embedded-systems friendly compact binary format.
//! - [Bincode], a compact binary format
//! used for IPC within the Servo rendering engine.
//! - [CBOR], a Concise Binary Object Representation designed for small message
//! size without the need for version negotiation.
//! - [YAML], a self-proclaimed human-friendly configuration language that ain't
@ -44,9 +45,8 @@
//! - [Avro], a binary format used within Apache Hadoop, with support for schema
//! definition.
//! - [JSON5], a superset of JSON including some productions from ES5.
//! - [Postcard], a no\_std and embedded-systems friendly compact binary format.
//! - [URL] query strings, in the x-www-form-urlencoded format.
//! - [Starlark], the format used for describing build targets by the Bazel and
//! Buck build systems. *(serialization only)*
//! - [Envy], a way to deserialize environment variables into Rust structs.
//! *(deserialization only)*
//! - [Envy Store], a way to deserialize [AWS Parameter Store] parameters into
@ -54,103 +54,91 @@
//! - [S-expressions], the textual representation of code and data used by the
//! Lisp language family.
//! - [D-Bus]'s binary wire format.
//! - [FlexBuffers], the schemaless cousin of Google's FlatBuffers zero-copy
//! serialization format.
//! - [Bencode], a simple binary format used in the BitTorrent protocol.
//! - [Token streams], for processing Rust procedural macro input.
//! *(deserialization only)*
//! - [FlexBuffers], the schemaless cousin of Google's FlatBuffers zero-copy serialization format.
//! - [DynamoDB Items], the format used by [rusoto_dynamodb] to transfer data to
//! and from DynamoDB.
//! - [Hjson], a syntax extension to JSON designed around human reading and
//! editing. *(deserialization only)*
//! - [CSV], Comma-separated values is a tabular text file format.
//!
//! [JSON]: https://github.com/serde-rs/json
//! [Postcard]: https://github.com/jamesmunns/postcard
//! [Bincode]: https://github.com/servo/bincode
//! [CBOR]: https://github.com/enarx/ciborium
//! [YAML]: https://github.com/dtolnay/serde-yaml
//! [MessagePack]: https://github.com/3Hren/msgpack-rust
//! [TOML]: https://docs.rs/toml
//! [TOML]: https://github.com/alexcrichton/toml-rs
//! [Pickle]: https://github.com/birkenfeld/serde-pickle
//! [RON]: https://github.com/ron-rs/ron
//! [BSON]: https://github.com/mongodb/bson-rust
//! [Avro]: https://docs.rs/apache-avro
//! [BSON]: https://github.com/zonyitoo/bson-rs
//! [Avro]: https://github.com/flavray/avro-rs
//! [JSON5]: https://github.com/callum-oakley/json5-rs
//! [Postcard]: https://github.com/jamesmunns/postcard
//! [URL]: https://docs.rs/serde_qs
//! [Starlark]: https://github.com/dtolnay/serde-starlark
//! [Envy]: https://github.com/softprops/envy
//! [Envy Store]: https://github.com/softprops/envy-store
//! [Cargo]: https://doc.rust-lang.org/cargo/reference/manifest.html
//! [AWS Parameter Store]: https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-parameter-store.html
//! [AWS Parameter Store]: https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-paramstore.html
//! [S-expressions]: https://github.com/rotty/lexpr-rs
//! [D-Bus]: https://docs.rs/zvariant
//! [FlexBuffers]: https://github.com/google/flatbuffers/tree/master/rust/flexbuffers
//! [Bencode]: https://github.com/P3KI/bendy
//! [Token streams]: https://github.com/oxidecomputer/serde_tokenstream
//! [DynamoDB Items]: https://docs.rs/serde_dynamo
//! [rusoto_dynamodb]: https://docs.rs/rusoto_dynamodb
//! [Hjson]: https://github.com/Canop/deser-hjson
//! [CSV]: https://docs.rs/csv
////////////////////////////////////////////////////////////////////////////////
// Serde types in rustdoc of other crates get linked to here.
#![doc(html_root_url = "https://docs.rs/serde/1.0.197")]
#![doc(html_root_url = "https://docs.rs/serde/1.0.136")]
// Support using Serde without the standard library!
#![cfg_attr(not(feature = "std"), no_std)]
// Show which crate feature enables conditionally compiled APIs in documentation.
#![cfg_attr(doc_cfg, feature(doc_cfg))]
// Unstable functionality only if the user asks for it. For tracking and
// discussion of these features please refer to this issue:
//
// https://github.com/serde-rs/serde/issues/812
#![cfg_attr(feature = "unstable", feature(error_in_core, never_type))]
#![cfg_attr(feature = "unstable", feature(never_type))]
#![allow(unknown_lints, bare_trait_objects, deprecated)]
#![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
// Ignored clippy and clippy_pedantic lints
#![allow(
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/5704
clippy::unnested_or_patterns,
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/7768
clippy::semicolon_if_nothing_returned,
// not available in our oldest supported compiler
clippy::empty_enum,
clippy::type_repetition_in_bounds, // https://github.com/rust-lang/rust-clippy/issues/8772
// integer and float ser/de requires these sorts of casts
clippy::cast_possible_truncation,
clippy::cast_possible_wrap,
clippy::cast_sign_loss,
// things are often more readable this way
clippy::cast_lossless,
clippy::module_name_repetitions,
clippy::single_match_else,
clippy::type_complexity,
clippy::use_self,
clippy::zero_prefixed_literal,
// correctly used
clippy::derive_partial_eq_without_eq,
clippy::enum_glob_use,
clippy::explicit_auto_deref,
clippy::incompatible_msrv,
clippy::let_underscore_untyped,
clippy::map_err_ignore,
clippy::new_without_default,
clippy::result_unit_err,
clippy::wildcard_imports,
// not practical
clippy::needless_pass_by_value,
clippy::similar_names,
clippy::too_many_lines,
// preference
clippy::doc_markdown,
clippy::unseparated_literal_suffix,
// false positive
clippy::needless_doctest_main,
// noisy
clippy::missing_errors_doc,
clippy::must_use_candidate,
#![cfg_attr(
feature = "cargo-clippy",
allow(
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/5704
unnested_or_patterns,
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/7768
semicolon_if_nothing_returned,
// not available in our oldest supported compiler
checked_conversions,
empty_enum,
redundant_field_names,
redundant_static_lifetimes,
// integer and float ser/de requires these sorts of casts
cast_possible_truncation,
cast_possible_wrap,
cast_sign_loss,
// things are often more readable this way
cast_lossless,
module_name_repetitions,
option_if_let_else,
single_match_else,
type_complexity,
use_self,
zero_prefixed_literal,
// correctly used
enum_glob_use,
let_underscore_drop,
map_err_ignore,
result_unit_err,
wildcard_imports,
// not practical
needless_pass_by_value,
similar_names,
too_many_lines,
// preference
doc_markdown,
unseparated_literal_suffix,
// false positive
needless_doctest_main,
// noisy
missing_errors_doc,
must_use_candidate,
)
)]
// Restrictions
#![deny(clippy::question_mark_used)]
// Rustc lints.
#![deny(missing_docs, unused_imports)]
@ -170,26 +158,21 @@ mod lib {
pub use std::*;
}
pub use self::core::{cmp, iter, mem, num, ptr, slice, str};
pub use self::core::{f32, f64};
pub use self::core::{i16, i32, i64, i8, isize};
pub use self::core::{iter, num, ptr, str};
pub use self::core::{u16, u32, u64, u8, usize};
#[cfg(any(feature = "std", feature = "alloc"))]
pub use self::core::{cmp, mem, slice};
pub use self::core::cell::{Cell, RefCell};
pub use self::core::clone;
pub use self::core::cmp::Reverse;
pub use self::core::convert;
pub use self::core::default;
pub use self::core::fmt::{self, Debug, Display, Write as FmtWrite};
pub use self::core::clone::{self, Clone};
pub use self::core::convert::{self, From, Into};
pub use self::core::default::{self, Default};
pub use self::core::fmt::{self, Debug, Display};
pub use self::core::marker::{self, PhantomData};
pub use self::core::num::Wrapping;
pub use self::core::ops::{Bound, Range, RangeFrom, RangeInclusive, RangeTo};
pub use self::core::option;
pub use self::core::result;
pub use self::core::time::Duration;
pub use self::core::ops::Range;
pub use self::core::option::{self, Option};
pub use self::core::result::{self, Result};
#[cfg(all(feature = "alloc", not(feature = "std")))]
pub use alloc::borrow::{Cow, ToOwned};
@ -226,23 +209,13 @@ mod lib {
#[cfg(feature = "std")]
pub use std::collections::{BTreeMap, BTreeSet, BinaryHeap, LinkedList, VecDeque};
#[cfg(all(not(no_core_cstr), not(feature = "std")))]
pub use self::core::ffi::CStr;
#[cfg(feature = "std")]
pub use std::ffi::CStr;
#[cfg(all(not(no_core_cstr), feature = "alloc", not(feature = "std")))]
pub use alloc::ffi::CString;
#[cfg(feature = "std")]
pub use std::ffi::CString;
#[cfg(feature = "std")]
pub use std::{error, net};
#[cfg(feature = "std")]
pub use std::collections::{HashMap, HashSet};
#[cfg(feature = "std")]
pub use std::ffi::{OsStr, OsString};
pub use std::ffi::{CStr, CString, OsStr, OsString};
#[cfg(feature = "std")]
pub use std::hash::{BuildHasher, Hash};
#[cfg(feature = "std")]
@ -254,39 +227,28 @@ mod lib {
#[cfg(feature = "std")]
pub use std::time::{SystemTime, UNIX_EPOCH};
#[cfg(all(feature = "std", no_target_has_atomic, not(no_std_atomic)))]
#[cfg(all(feature = "std", not(no_collections_bound), no_ops_bound))]
pub use std::collections::Bound;
#[cfg(not(no_core_reverse))]
pub use self::core::cmp::Reverse;
#[cfg(not(no_ops_bound))]
pub use self::core::ops::Bound;
#[cfg(not(no_range_inclusive))]
pub use self::core::ops::RangeInclusive;
#[cfg(all(feature = "std", not(no_std_atomic)))]
pub use std::sync::atomic::{
AtomicBool, AtomicI16, AtomicI32, AtomicI8, AtomicIsize, AtomicU16, AtomicU32, AtomicU8,
AtomicUsize, Ordering,
};
#[cfg(all(feature = "std", no_target_has_atomic, not(no_std_atomic64)))]
#[cfg(all(feature = "std", not(no_std_atomic64)))]
pub use std::sync::atomic::{AtomicI64, AtomicU64};
#[cfg(all(feature = "std", not(no_target_has_atomic)))]
pub use std::sync::atomic::Ordering;
#[cfg(all(feature = "std", not(no_target_has_atomic), target_has_atomic = "8"))]
pub use std::sync::atomic::{AtomicBool, AtomicI8, AtomicU8};
#[cfg(all(feature = "std", not(no_target_has_atomic), target_has_atomic = "16"))]
pub use std::sync::atomic::{AtomicI16, AtomicU16};
#[cfg(all(feature = "std", not(no_target_has_atomic), target_has_atomic = "32"))]
pub use std::sync::atomic::{AtomicI32, AtomicU32};
#[cfg(all(feature = "std", not(no_target_has_atomic), target_has_atomic = "64"))]
pub use std::sync::atomic::{AtomicI64, AtomicU64};
#[cfg(all(feature = "std", not(no_target_has_atomic), target_has_atomic = "ptr"))]
pub use std::sync::atomic::{AtomicIsize, AtomicUsize};
}
// None of this crate's error handling needs the `From::from` error conversion
// performed implicitly by the `?` operator or the standard library's `try!`
// macro. This simplified macro gives a 5.5% improvement in compile time
// compared to standard `try!`, and 9% improvement compared to `?`.
macro_rules! tri {
($expr:expr) => {
match $expr {
Ok(val) => val,
Err(err) => return Err(err),
}
};
#[cfg(any(feature = "std", not(no_core_duration)))]
pub use self::core::time::Duration;
}
////////////////////////////////////////////////////////////////////////////////
@ -301,19 +263,24 @@ pub mod de;
pub mod ser;
#[doc(inline)]
pub use crate::de::{Deserialize, Deserializer};
pub use de::{Deserialize, Deserializer};
#[doc(inline)]
pub use crate::ser::{Serialize, Serializer};
pub use ser::{Serialize, Serializer};
// Used by generated code and doc tests. Not public API.
#[doc(hidden)]
#[path = "private/mod.rs"]
pub mod __private;
#[allow(unused_imports)]
use self::__private as export;
#[allow(unused_imports)]
use self::__private as private;
#[path = "de/seed.rs"]
mod seed;
#[cfg(not(any(feature = "std", feature = "unstable")))]
#[cfg(not(feature = "std"))]
mod std_error;
// Re-export #[derive(Serialize, Deserialize)].
@ -322,12 +289,12 @@ mod std_error;
// be annoying for crates that provide handwritten impls or data formats. They
// would need to disable default features and then explicitly re-enable std.
#[cfg(feature = "serde_derive")]
#[allow(unused_imports)]
#[macro_use]
extern crate serde_derive;
/// Derive macro available if serde is built with `features = ["derive"]`.
#[cfg(feature = "serde_derive")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "derive")))]
pub use serde_derive::{Deserialize, Serialize};
#[doc(hidden)]
pub use serde_derive::*;
#[cfg(all(not(no_serde_derive), any(feature = "std", feature = "alloc")))]
mod actually_private {

17
serde/src/macros.rs
View File

@ -11,7 +11,7 @@
/// input. This requires repetitive implementations of all the [`Deserializer`]
/// trait methods.
///
/// ```edition2021
/// ```edition2018
/// # use serde::forward_to_deserialize_any;
/// # use serde::de::{value, Deserializer, Visitor};
/// #
@ -47,7 +47,7 @@
/// methods so that they forward directly to [`Deserializer::deserialize_any`].
/// You can choose which methods to forward.
///
/// ```edition2021
/// ```edition2018
/// # use serde::forward_to_deserialize_any;
/// # use serde::de::{value, Deserializer, Visitor};
/// #
@ -78,10 +78,11 @@
/// called `V`. A different type parameter and a different lifetime can be
/// specified explicitly if necessary.
///
/// ```edition2021
/// ```edition2018
/// # use std::marker::PhantomData;
/// #
/// # use serde::forward_to_deserialize_any;
/// # use serde::de::{value, Deserializer, Visitor};
/// # use std::marker::PhantomData;
/// #
/// # struct MyDeserializer<V>(PhantomData<V>);
/// #
@ -154,7 +155,9 @@ macro_rules! forward_to_deserialize_any_helper {
forward_to_deserialize_any_method!{deserialize_i64<$l, $v>()}
};
(i128<$l:tt, $v:ident>) => {
forward_to_deserialize_any_method!{deserialize_i128<$l, $v>()}
serde_if_integer128! {
forward_to_deserialize_any_method!{deserialize_i128<$l, $v>()}
}
};
(u8<$l:tt, $v:ident>) => {
forward_to_deserialize_any_method!{deserialize_u8<$l, $v>()}
@ -169,7 +172,9 @@ macro_rules! forward_to_deserialize_any_helper {
forward_to_deserialize_any_method!{deserialize_u64<$l, $v>()}
};
(u128<$l:tt, $v:ident>) => {
forward_to_deserialize_any_method!{deserialize_u128<$l, $v>()}
serde_if_integer128! {
forward_to_deserialize_any_method!{deserialize_u128<$l, $v>()}
}
};
(f32<$l:tt, $v:ident>) => {
forward_to_deserialize_any_method!{deserialize_f32<$l, $v>()}

580
serde/src/private/de.rs
View File

@ -1,13 +1,10 @@
use crate::lib::*;
use lib::*;
use crate::de::value::{BorrowedBytesDeserializer, BytesDeserializer};
use crate::de::{
Deserialize, DeserializeSeed, Deserializer, EnumAccess, Error, IntoDeserializer, VariantAccess,
Visitor,
};
use de::value::{BorrowedBytesDeserializer, BytesDeserializer};
use de::{Deserialize, Deserializer, Error, IntoDeserializer, Visitor};
#[cfg(any(feature = "std", feature = "alloc"))]
use crate::de::{MapAccess, Unexpected};
use de::{DeserializeSeed, MapAccess, Unexpected};
#[cfg(any(feature = "std", feature = "alloc"))]
pub use self::content::{
@ -16,7 +13,7 @@ pub use self::content::{
TagOrContentField, TagOrContentFieldVisitor, TaggedContentVisitor, UntaggedUnitVisitor,
};
pub use crate::seed::InPlaceSeed;
pub use seed::InPlaceSeed;
/// If the missing field is of type `Option<T>` then treat is as `None`,
/// otherwise it is an error.
@ -206,13 +203,13 @@ mod content {
// This issue is tracking making some of this stuff public:
// https://github.com/serde-rs/serde/issues/741
use crate::lib::*;
use lib::*;
use crate::actually_private;
use crate::de::value::{MapDeserializer, SeqDeserializer};
use crate::de::{
self, size_hint, Deserialize, DeserializeSeed, Deserializer, EnumAccess, Expected,
IgnoredAny, MapAccess, SeqAccess, Unexpected, Visitor,
use __private::size_hint;
use actually_private;
use de::{
self, Deserialize, DeserializeSeed, Deserializer, EnumAccess, Expected, IgnoredAny,
MapAccess, SeqAccess, Unexpected, Visitor,
};
/// Used from generated code to buffer the contents of the Deserializer when
@ -302,17 +299,6 @@ mod content {
}
}
impl<'de, E> de::IntoDeserializer<'de, E> for Content<'de>
where
E: de::Error,
{
type Deserializer = ContentDeserializer<'de, E>;
fn into_deserializer(self) -> Self::Deserializer {
ContentDeserializer::new(self)
}
}
struct ContentVisitor<'de> {
value: PhantomData<Content<'de>>,
}
@ -488,9 +474,8 @@ mod content {
where
V: SeqAccess<'de>,
{
let mut vec =
Vec::<Content>::with_capacity(size_hint::cautious::<Content>(visitor.size_hint()));
while let Some(e) = tri!(visitor.next_element()) {
let mut vec = Vec::with_capacity(size_hint::cautious(visitor.size_hint()));
while let Some(e) = try!(visitor.next_element()) {
vec.push(e);
}
Ok(Content::Seq(vec))
@ -500,11 +485,8 @@ mod content {
where
V: MapAccess<'de>,
{
let mut vec =
Vec::<(Content, Content)>::with_capacity(
size_hint::cautious::<(Content, Content)>(visitor.size_hint()),
);
while let Some(kv) = tri!(visitor.next_entry()) {
let mut vec = Vec::with_capacity(size_hint::cautious(visitor.size_hint()));
while let Some(kv) = try!(visitor.next_entry()) {
vec.push(kv);
}
Ok(Content::Map(vec))
@ -536,7 +518,7 @@ mod content {
impl<'de> TagOrContentVisitor<'de> {
fn new(name: &'static str) -> Self {
TagOrContentVisitor {
name,
name: name,
value: PhantomData,
}
}
@ -815,29 +797,51 @@ mod content {
/// Used by generated code to deserialize an internally tagged enum.
///
/// Not public API.
pub struct TaggedContentVisitor<T> {
tag_name: &'static str,
expecting: &'static str,
value: PhantomData<T>,
pub struct TaggedContent<'de, T> {
pub tag: T,
pub content: Content<'de>,
}
impl<T> TaggedContentVisitor<T> {
/// Not public API.
pub struct TaggedContentVisitor<'de, T> {
tag_name: &'static str,
expecting: &'static str,
value: PhantomData<TaggedContent<'de, T>>,
}
impl<'de, T> TaggedContentVisitor<'de, T> {
/// Visitor for the content of an internally tagged enum with the given
/// tag name.
pub fn new(name: &'static str, expecting: &'static str) -> Self {
TaggedContentVisitor {
tag_name: name,
expecting,
expecting: expecting,
value: PhantomData,
}
}
}
impl<'de, T> Visitor<'de> for TaggedContentVisitor<T>
impl<'de, T> DeserializeSeed<'de> for TaggedContentVisitor<'de, T>
where
T: Deserialize<'de>,
{
type Value = (T, Content<'de>);
type Value = TaggedContent<'de, T>;
fn deserialize<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
where
D: Deserializer<'de>,
{
// Internally tagged enums are only supported in self-describing
// formats.
deserializer.deserialize_any(self)
}
}
impl<'de, T> Visitor<'de> for TaggedContentVisitor<'de, T>
where
T: Deserialize<'de>,
{
type Value = TaggedContent<'de, T>;
fn expecting(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt.write_str(self.expecting)
@ -847,14 +851,17 @@ mod content {
where
S: SeqAccess<'de>,
{
let tag = match tri!(seq.next_element()) {
let tag = match try!(seq.next_element()) {
Some(tag) => tag,
None => {
return Err(de::Error::missing_field(self.tag_name));
}
};
let rest = de::value::SeqAccessDeserializer::new(seq);
Ok((tag, tri!(Content::deserialize(rest))))
Ok(TaggedContent {
tag: tag,
content: try!(Content::deserialize(rest)),
})
}
fn visit_map<M>(self, mut map: M) -> Result<Self::Value, M::Error>
@ -862,27 +869,27 @@ mod content {
M: MapAccess<'de>,
{
let mut tag = None;
let mut vec = Vec::<(Content, Content)>::with_capacity(size_hint::cautious::<(
Content,
Content,
)>(map.size_hint()));
while let Some(k) = tri!(map.next_key_seed(TagOrContentVisitor::new(self.tag_name))) {
let mut vec = Vec::with_capacity(size_hint::cautious(map.size_hint()));
while let Some(k) = try!(map.next_key_seed(TagOrContentVisitor::new(self.tag_name))) {
match k {
TagOrContent::Tag => {
if tag.is_some() {
return Err(de::Error::duplicate_field(self.tag_name));
}
tag = Some(tri!(map.next_value()));
tag = Some(try!(map.next_value()));
}
TagOrContent::Content(k) => {
let v = tri!(map.next_value());
let v = try!(map.next_value());
vec.push((k, v));
}
}
}
match tag {
None => Err(de::Error::missing_field(self.tag_name)),
Some(tag) => Ok((tag, Content::Map(vec))),
Some(tag) => Ok(TaggedContent {
tag: tag,
content: Content::Map(vec),
}),
}
}
}
@ -908,7 +915,7 @@ mod content {
where
D: Deserializer<'de>,
{
deserializer.deserialize_identifier(self)
deserializer.deserialize_str(self)
}
}
@ -919,20 +926,6 @@ mod content {
write!(formatter, "{:?} or {:?}", self.tag, self.content)
}
fn visit_u64<E>(self, field_index: u64) -> Result<Self::Value, E>
where
E: de::Error,
{
match field_index {
0 => Ok(TagOrContentField::Tag),
1 => Ok(TagOrContentField::Content),
_ => Err(de::Error::invalid_value(
Unexpected::Unsigned(field_index),
&self,
)),
}
}
fn visit_str<E>(self, field: &str) -> Result<Self::Value, E>
where
E: de::Error,
@ -945,19 +938,6 @@ mod content {
Err(de::Error::invalid_value(Unexpected::Str(field), &self))
}
}
fn visit_bytes<E>(self, field: &[u8]) -> Result<Self::Value, E>
where
E: de::Error,
{
if field == self.tag.as_bytes() {
Ok(TagOrContentField::Tag)
} else if field == self.content.as_bytes() {
Ok(TagOrContentField::Content)
} else {
Err(de::Error::invalid_value(Unexpected::Bytes(field), &self))
}
}
}
/// Used by generated code to deserialize an adjacently tagged enum when
@ -983,7 +963,7 @@ mod content {
where
D: Deserializer<'de>,
{
deserializer.deserialize_identifier(self)
deserializer.deserialize_str(self)
}
}
@ -998,31 +978,13 @@ mod content {
)
}
fn visit_u64<E>(self, field_index: u64) -> Result<Self::Value, E>
where
E: de::Error,
{
match field_index {
0 => Ok(TagContentOtherField::Tag),
1 => Ok(TagContentOtherField::Content),
_ => Ok(TagContentOtherField::Other),
}
}
fn visit_str<E>(self, field: &str) -> Result<Self::Value, E>
where
E: de::Error,
{
self.visit_bytes(field.as_bytes())
}
fn visit_bytes<E>(self, field: &[u8]) -> Result<Self::Value, E>
where
E: de::Error,
{
if field == self.tag.as_bytes() {
if field == self.tag {
Ok(TagContentOtherField::Tag)
} else if field == self.content.as_bytes() {
} else if field == self.content {
Ok(TagContentOtherField::Content)
} else {
Ok(TagContentOtherField::Other)
@ -1088,9 +1050,9 @@ mod content {
E: de::Error,
{
let seq = content.into_iter().map(ContentDeserializer::new);
let mut seq_visitor = SeqDeserializer::new(seq);
let value = tri!(visitor.visit_seq(&mut seq_visitor));
tri!(seq_visitor.end());
let mut seq_visitor = de::value::SeqDeserializer::new(seq);
let value = try!(visitor.visit_seq(&mut seq_visitor));
try!(seq_visitor.end());
Ok(value)
}
@ -1105,9 +1067,9 @@ mod content {
let map = content
.into_iter()
.map(|(k, v)| (ContentDeserializer::new(k), ContentDeserializer::new(v)));
let mut map_visitor = MapDeserializer::new(map);
let value = tri!(visitor.visit_map(&mut map_visitor));
tri!(map_visitor.end());
let mut map_visitor = de::value::MapDeserializer::new(map);
let value = try!(visitor.visit_map(&mut map_visitor));
try!(map_visitor.end());
Ok(value)
}
@ -1300,17 +1262,6 @@ mod content {
{
match self.content {
Content::Unit => visitor.visit_unit(),
// Allow deserializing newtype variant containing unit.
//
// #[derive(Deserialize)]
// #[serde(tag = "result")]
// enum Response<T> {
// Success(T),
// }
//
// We want {"result":"Success"} to deserialize into Response<()>.
Content::Map(ref v) if v.is_empty() => visitor.visit_unit(),
_ => Err(self.invalid_type(&visitor)),
}
}
@ -1495,7 +1446,7 @@ mod content {
/// private API, don't use
pub fn new(content: Content<'de>) -> Self {
ContentDeserializer {
content,
content: content,
err: PhantomData,
}
}
@ -1516,8 +1467,8 @@ mod content {
{
pub fn new(variant: Content<'de>, value: Option<Content<'de>>) -> EnumDeserializer<'de, E> {
EnumDeserializer {
variant,
value,
variant: variant,
value: value,
err: PhantomData,
}
}
@ -1583,7 +1534,7 @@ mod content {
{
match self.value {
Some(Content::Seq(v)) => {
de::Deserializer::deserialize_any(SeqDeserializer::new(v.into_iter()), visitor)
de::Deserializer::deserialize_any(SeqDeserializer::new(v), visitor)
}
Some(other) => Err(de::Error::invalid_type(
other.unexpected(),
@ -1606,10 +1557,10 @@ mod content {
{
match self.value {
Some(Content::Map(v)) => {
de::Deserializer::deserialize_any(MapDeserializer::new(v.into_iter()), visitor)
de::Deserializer::deserialize_any(MapDeserializer::new(v), visitor)
}
Some(Content::Seq(v)) => {
de::Deserializer::deserialize_any(SeqDeserializer::new(v.into_iter()), visitor)
de::Deserializer::deserialize_any(SeqDeserializer::new(v), visitor)
}
Some(other) => Err(de::Error::invalid_type(
other.unexpected(),
@ -1623,6 +1574,156 @@ mod content {
}
}
struct SeqDeserializer<'de, E>
where
E: de::Error,
{
iter: <Vec<Content<'de>> as IntoIterator>::IntoIter,
err: PhantomData<E>,
}
impl<'de, E> SeqDeserializer<'de, E>
where
E: de::Error,
{
fn new(vec: Vec<Content<'de>>) -> Self {
SeqDeserializer {
iter: vec.into_iter(),
err: PhantomData,
}
}
}
impl<'de, E> de::Deserializer<'de> for SeqDeserializer<'de, E>
where
E: de::Error,
{
type Error = E;
#[inline]
fn deserialize_any<V>(mut self, visitor: V) -> Result<V::Value, Self::Error>
where
V: de::Visitor<'de>,
{
let len = self.iter.len();
if len == 0 {
visitor.visit_unit()
} else {
let ret = try!(visitor.visit_seq(&mut self));
let remaining = self.iter.len();
if remaining == 0 {
Ok(ret)
} else {
Err(de::Error::invalid_length(len, &"fewer elements in array"))
}
}
}
forward_to_deserialize_any! {
bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
bytes byte_buf option unit unit_struct newtype_struct seq tuple
tuple_struct map struct enum identifier ignored_any
}
}
impl<'de, E> de::SeqAccess<'de> for SeqDeserializer<'de, E>
where
E: de::Error,
{
type Error = E;
fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, Self::Error>
where
T: de::DeserializeSeed<'de>,
{
match self.iter.next() {
Some(value) => seed.deserialize(ContentDeserializer::new(value)).map(Some),
None => Ok(None),
}
}
fn size_hint(&self) -> Option<usize> {
size_hint::from_bounds(&self.iter)
}
}
struct MapDeserializer<'de, E>
where
E: de::Error,
{
iter: <Vec<(Content<'de>, Content<'de>)> as IntoIterator>::IntoIter,
value: Option<Content<'de>>,
err: PhantomData<E>,
}
impl<'de, E> MapDeserializer<'de, E>
where
E: de::Error,
{
fn new(map: Vec<(Content<'de>, Content<'de>)>) -> Self {
MapDeserializer {
iter: map.into_iter(),
value: None,
err: PhantomData,
}
}
}
impl<'de, E> de::MapAccess<'de> for MapDeserializer<'de, E>
where
E: de::Error,
{
type Error = E;
fn next_key_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, Self::Error>
where
T: de::DeserializeSeed<'de>,
{
match self.iter.next() {
Some((key, value)) => {
self.value = Some(value);
seed.deserialize(ContentDeserializer::new(key)).map(Some)
}
None => Ok(None),
}
}
fn next_value_seed<T>(&mut self, seed: T) -> Result<T::Value, Self::Error>
where
T: de::DeserializeSeed<'de>,
{
match self.value.take() {
Some(value) => seed.deserialize(ContentDeserializer::new(value)),
None => Err(de::Error::custom("value is missing")),
}
}
fn size_hint(&self) -> Option<usize> {
size_hint::from_bounds(&self.iter)
}
}
impl<'de, E> de::Deserializer<'de> for MapDeserializer<'de, E>
where
E: de::Error,
{
type Error = E;
#[inline]
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: de::Visitor<'de>,
{
visitor.visit_map(self)
}
forward_to_deserialize_any! {
bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
bytes byte_buf option unit unit_struct newtype_struct seq tuple
tuple_struct map struct enum identifier ignored_any
}
}
/// Not public API.
pub struct ContentRefDeserializer<'a, 'de: 'a, E> {
content: &'a Content<'de>,
@ -1684,9 +1785,9 @@ mod content {
E: de::Error,
{
let seq = content.iter().map(ContentRefDeserializer::new);
let mut seq_visitor = SeqDeserializer::new(seq);
let value = tri!(visitor.visit_seq(&mut seq_visitor));
tri!(seq_visitor.end());
let mut seq_visitor = de::value::SeqDeserializer::new(seq);
let value = try!(visitor.visit_seq(&mut seq_visitor));
try!(seq_visitor.end());
Ok(value)
}
@ -1698,15 +1799,15 @@ mod content {
V: Visitor<'de>,
E: de::Error,
{
let map = content.iter().map(|(k, v)| {
let map = content.iter().map(|&(ref k, ref v)| {
(
ContentRefDeserializer::new(k),
ContentRefDeserializer::new(v),
)
});
let mut map_visitor = MapDeserializer::new(map);
let value = tri!(visitor.visit_map(&mut map_visitor));
tri!(map_visitor.end());
let mut map_visitor = de::value::MapDeserializer::new(map);
let value = try!(visitor.visit_map(&mut map_visitor));
try!(map_visitor.end());
Ok(value)
}
@ -1995,7 +2096,7 @@ mod content {
let (variant, value) = match *self.content {
Content::Map(ref value) => {
let mut iter = value.iter();
let (variant, value) = match iter.next() {
let &(ref variant, ref value) = match iter.next() {
Some(v) => v,
None => {
return Err(de::Error::invalid_value(
@ -2023,8 +2124,8 @@ mod content {
};
visitor.visit_enum(EnumRefDeserializer {
variant,
value,
variant: variant,
value: value,
err: PhantomData,
})
}
@ -2068,20 +2169,12 @@ mod content {
/// private API, don't use
pub fn new(content: &'a Content<'de>) -> Self {
ContentRefDeserializer {
content,
content: content,
err: PhantomData,
}
}
}
impl<'a, 'de: 'a, E> Copy for ContentRefDeserializer<'a, 'de, E> {}
impl<'a, 'de: 'a, E> Clone for ContentRefDeserializer<'a, 'de, E> {
fn clone(&self) -> Self {
*self
}
}
struct EnumRefDeserializer<'a, 'de: 'a, E>
where
E: de::Error,
@ -2150,7 +2243,7 @@ mod content {
V: de::Visitor<'de>,
{
match self.value {
Some(Content::Seq(v)) => {
Some(&Content::Seq(ref v)) => {
de::Deserializer::deserialize_any(SeqRefDeserializer::new(v), visitor)
}
Some(other) => Err(de::Error::invalid_type(
@ -2173,10 +2266,10 @@ mod content {
V: de::Visitor<'de>,
{
match self.value {
Some(Content::Map(v)) => {
Some(&Content::Map(ref v)) => {
de::Deserializer::deserialize_any(MapRefDeserializer::new(v), visitor)
}
Some(Content::Seq(v)) => {
Some(&Content::Seq(ref v)) => {
de::Deserializer::deserialize_any(SeqRefDeserializer::new(v), visitor)
}
Some(other) => Err(de::Error::invalid_type(
@ -2226,7 +2319,7 @@ mod content {
if len == 0 {
visitor.visit_unit()
} else {
let ret = tri!(visitor.visit_seq(&mut self));
let ret = try!(visitor.visit_seq(&mut self));
let remaining = self.iter.len();
if remaining == 0 {
Ok(ret)
@ -2299,7 +2392,7 @@ mod content {
T: de::DeserializeSeed<'de>,
{
match self.iter.next() {
Some((key, value)) => {
Some(&(ref key, ref value)) => {
self.value = Some(value);
seed.deserialize(ContentRefDeserializer::new(key)).map(Some)
}
@ -2377,8 +2470,8 @@ mod content {
/// Not public API.
pub fn new(type_name: &'a str, variant_name: &'a str) -> Self {
InternallyTaggedUnitVisitor {
type_name,
variant_name,
type_name: type_name,
variant_name: variant_name,
}
}
}
@ -2405,7 +2498,7 @@ mod content {
where
M: MapAccess<'de>,
{
while tri!(access.next_entry::<IgnoredAny, IgnoredAny>()).is_some() {}
while try!(access.next_entry::<IgnoredAny, IgnoredAny>()).is_some() {}
Ok(())
}
}
@ -2422,8 +2515,8 @@ mod content {
/// Not public API.
pub fn new(type_name: &'a str, variant_name: &'a str) -> Self {
UntaggedUnitVisitor {
type_name,
variant_name,
type_name: type_name,
variant_name: variant_name,
}
}
}
@ -2604,7 +2697,7 @@ where
#[cfg(any(feature = "std", feature = "alloc"))]
macro_rules! forward_to_deserialize_other {
($($func:ident ($($arg:ty),*))*) => {
($($func:ident ( $($arg:ty),* ))*) => {
$(
fn $func<V>(self, $(_: $arg,)* _visitor: V) -> Result<V::Value, Self::Error>
where
@ -2627,7 +2720,11 @@ where
where
V: Visitor<'de>,
{
self.deserialize_map(visitor)
visitor.visit_map(FlatInternallyTaggedAccess {
iter: self.0.iter_mut(),
pending: None,
_marker: PhantomData,
})
}
fn deserialize_enum<V>(
@ -2639,8 +2736,17 @@ where
where
V: Visitor<'de>,
{
for entry in self.0 {
if let Some((key, value)) = flat_map_take_entry(entry, variants) {
for item in self.0.iter_mut() {
// items in the vector are nulled out when used. So we can only use
// an item if it's still filled in and if the field is one we care
// about.
let use_item = match *item {
None => false,
Some((ref c, _)) => c.as_str().map_or(false, |x| variants.contains(&x)),
};
if use_item {
let (key, value) = item.take().unwrap();
return visitor.visit_enum(EnumDeserializer::new(key, Some(value)));
}
}
@ -2655,11 +2761,7 @@ where
where
V: Visitor<'de>,
{
visitor.visit_map(FlatMapAccess {
iter: self.0.iter(),
pending_content: None,
_marker: PhantomData,
})
visitor.visit_map(FlatMapAccess::new(self.0.iter()))
}
fn deserialize_struct<V>(
@ -2671,12 +2773,7 @@ where
where
V: Visitor<'de>,
{
visitor.visit_map(FlatStructAccess {
iter: self.0.iter_mut(),
pending_content: None,
fields,
_marker: PhantomData,
})
visitor.visit_map(FlatStructAccess::new(self.0.iter_mut(), fields))
}
fn deserialize_newtype_struct<V>(self, _name: &str, visitor: V) -> Result<V::Value, Self::Error>
@ -2703,13 +2800,6 @@ where
visitor.visit_unit()
}
fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_unit()
}
forward_to_deserialize_other! {
deserialize_bool()
deserialize_i8()
@ -2732,16 +2822,30 @@ where
deserialize_tuple(usize)
deserialize_tuple_struct(&'static str, usize)
deserialize_identifier()
deserialize_ignored_any()
}
}
#[cfg(any(feature = "std", feature = "alloc"))]
struct FlatMapAccess<'a, 'de: 'a, E> {
pub struct FlatMapAccess<'a, 'de: 'a, E> {
iter: slice::Iter<'a, Option<(Content<'de>, Content<'de>)>>,
pending_content: Option<&'a Content<'de>>,
_marker: PhantomData<E>,
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'a, 'de, E> FlatMapAccess<'a, 'de, E> {
fn new(
iter: slice::Iter<'a, Option<(Content<'de>, Content<'de>)>>,
) -> FlatMapAccess<'a, 'de, E> {
FlatMapAccess {
iter: iter,
pending_content: None,
_marker: PhantomData,
}
}
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'a, 'de, E> MapAccess<'de> for FlatMapAccess<'a, 'de, E>
where
@ -2756,10 +2860,6 @@ where
for item in &mut self.iter {
// Items in the vector are nulled out when used by a struct.
if let Some((ref key, ref content)) = *item {
// Do not take(), instead borrow this entry. The internally tagged
// enum does its own buffering so we can't tell whether this entry
// is going to be consumed. Borrowing here leaves the entry
// available for later flattened fields.
self.pending_content = Some(content);
return seed.deserialize(ContentRefDeserializer::new(key)).map(Some);
}
@ -2779,13 +2879,28 @@ where
}
#[cfg(any(feature = "std", feature = "alloc"))]
struct FlatStructAccess<'a, 'de: 'a, E> {
pub struct FlatStructAccess<'a, 'de: 'a, E> {
iter: slice::IterMut<'a, Option<(Content<'de>, Content<'de>)>>,
pending_content: Option<Content<'de>>,
fields: &'static [&'static str],
_marker: PhantomData<E>,
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'a, 'de, E> FlatStructAccess<'a, 'de, E> {
fn new(
iter: slice::IterMut<'a, Option<(Content<'de>, Content<'de>)>>,
fields: &'static [&'static str],
) -> FlatStructAccess<'a, 'de, E> {
FlatStructAccess {
iter: iter,
pending_content: None,
fields: fields,
_marker: PhantomData,
}
}
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'a, 'de, E> MapAccess<'de> for FlatStructAccess<'a, 'de, E>
where
@ -2797,8 +2912,17 @@ where
where
T: DeserializeSeed<'de>,
{
for entry in self.iter.by_ref() {
if let Some((key, content)) = flat_map_take_entry(entry, self.fields) {
while let Some(item) = self.iter.next() {
// items in the vector are nulled out when used. So we can only use
// an item if it's still filled in and if the field is one we care
// about. In case we do not know which fields we want, we take them all.
let use_item = match *item {
None => false,
Some((ref c, _)) => c.as_str().map_or(false, |key| self.fields.contains(&key)),
};
if use_item {
let (key, content) = item.take().unwrap();
self.pending_content = Some(content);
return seed.deserialize(ContentDeserializer::new(key)).map(Some);
}
@ -2817,76 +2941,44 @@ where
}
}
/// Claims one key-value pair from a FlatMapDeserializer's field buffer if the
/// field name matches any of the recognized ones.
#[cfg(any(feature = "std", feature = "alloc"))]
fn flat_map_take_entry<'de>(
entry: &mut Option<(Content<'de>, Content<'de>)>,
recognized: &[&str],
) -> Option<(Content<'de>, Content<'de>)> {
// Entries in the FlatMapDeserializer buffer are nulled out as they get
// claimed for deserialization. We only use an entry if it is still present
// and if the field is one recognized by the current data structure.
let is_recognized = match entry {
None => false,
Some((k, _v)) => k.as_str().map_or(false, |name| recognized.contains(&name)),
};
if is_recognized {
entry.take()
} else {
None
}
pub struct FlatInternallyTaggedAccess<'a, 'de: 'a, E> {
iter: slice::IterMut<'a, Option<(Content<'de>, Content<'de>)>>,
pending: Option<&'a Content<'de>>,
_marker: PhantomData<E>,
}
pub struct AdjacentlyTaggedEnumVariantSeed<F> {
pub enum_name: &'static str,
pub variants: &'static [&'static str],
pub fields_enum: PhantomData<F>,
}
pub struct AdjacentlyTaggedEnumVariantVisitor<F> {
enum_name: &'static str,
fields_enum: PhantomData<F>,
}
impl<'de, F> Visitor<'de> for AdjacentlyTaggedEnumVariantVisitor<F>
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'a, 'de, E> MapAccess<'de> for FlatInternallyTaggedAccess<'a, 'de, E>
where
F: Deserialize<'de>,
E: Error,
{
type Value = F;
type Error = E;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
write!(formatter, "variant of enum {}", self.enum_name)
fn next_key_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, Self::Error>
where
T: DeserializeSeed<'de>,
{
for item in &mut self.iter {
if let Some((ref key, ref content)) = *item {
// Do not take(), instead borrow this entry. The internally tagged
// enum does its own buffering so we can't tell whether this entry
// is going to be consumed. Borrowing here leaves the entry
// available for later flattened fields.
self.pending = Some(content);
return seed.deserialize(ContentRefDeserializer::new(key)).map(Some);
}
}
Ok(None)
}
fn visit_enum<A>(self, data: A) -> Result<Self::Value, A::Error>
fn next_value_seed<T>(&mut self, seed: T) -> Result<T::Value, Self::Error>
where
A: EnumAccess<'de>,
T: DeserializeSeed<'de>,
{
let (variant, variant_access) = tri!(data.variant());
tri!(variant_access.unit_variant());
Ok(variant)
}
}
impl<'de, F> DeserializeSeed<'de> for AdjacentlyTaggedEnumVariantSeed<F>
where
F: Deserialize<'de>,
{
type Value = F;
fn deserialize<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_enum(
self.enum_name,
self.variants,
AdjacentlyTaggedEnumVariantVisitor {
enum_name: self.enum_name,
fields_enum: PhantomData,
},
)
match self.pending.take() {
Some(value) => seed.deserialize(ContentRefDeserializer::new(value)),
None => panic!("value is missing"),
}
}
}

4
serde/src/private/doc.rs
View File

@ -1,8 +1,8 @@
// Used only by Serde doc tests. Not public API.
use crate::lib::*;
use lib::*;
use crate::ser;
use ser;
#[doc(hidden)]
#[derive(Debug)]

24
serde/src/private/mod.rs
View File

@ -3,28 +3,30 @@ pub mod de;
#[cfg(not(no_serde_derive))]
pub mod ser;
pub mod size_hint;
// FIXME: #[cfg(doctest)] once https://github.com/rust-lang/rust/issues/67295 is fixed.
pub mod doc;
pub use crate::lib::clone::Clone;
pub use crate::lib::convert::{From, Into};
pub use crate::lib::default::Default;
pub use crate::lib::fmt::{self, Formatter};
pub use crate::lib::marker::PhantomData;
pub use crate::lib::option::Option::{self, None, Some};
pub use crate::lib::ptr;
pub use crate::lib::result::Result::{self, Err, Ok};
pub use lib::clone::Clone;
pub use lib::convert::{From, Into};
pub use lib::default::Default;
pub use lib::fmt::{self, Formatter};
pub use lib::marker::PhantomData;
pub use lib::option::Option::{self, None, Some};
pub use lib::ptr;
pub use lib::result::Result::{self, Err, Ok};
pub use self::string::from_utf8_lossy;
#[cfg(any(feature = "alloc", feature = "std"))]
pub use crate::lib::{ToString, Vec};
pub use lib::{ToString, Vec};
#[cfg(not(no_core_try_from))]
pub use crate::lib::convert::TryFrom;
pub use lib::convert::TryFrom;
mod string {
use crate::lib::*;
use lib::*;
#[cfg(any(feature = "std", feature = "alloc"))]
pub fn from_utf8_lossy(bytes: &[u8]) -> Cow<str> {

247
serde/src/private/ser.rs
View File

@ -1,6 +1,6 @@
use crate::lib::*;
use lib::*;
use crate::ser::{self, Impossible, Serialize, SerializeMap, SerializeStruct, Serializer};
use ser::{self, Impossible, Serialize, SerializeMap, SerializeStruct, Serializer};
#[cfg(any(feature = "std", feature = "alloc"))]
use self::content::{
@ -27,10 +27,10 @@ where
T: Serialize,
{
value.serialize(TaggedSerializer {
type_ident,
variant_ident,
tag,
variant_name,
type_ident: type_ident,
variant_ident: variant_ident,
tag: tag,
variant_name: variant_name,
delegate: serializer,
})
}
@ -51,6 +51,7 @@ enum Unsupported {
String,
ByteArray,
Optional,
Unit,
#[cfg(any(feature = "std", feature = "alloc"))]
UnitStruct,
Sequence,
@ -69,6 +70,7 @@ impl Display for Unsupported {
Unsupported::String => formatter.write_str("a string"),
Unsupported::ByteArray => formatter.write_str("a byte array"),
Unsupported::Optional => formatter.write_str("an optional"),
Unsupported::Unit => formatter.write_str("unit"),
#[cfg(any(feature = "std", feature = "alloc"))]
Unsupported::UnitStruct => formatter.write_str("unit struct"),
Unsupported::Sequence => formatter.write_str("a sequence"),
@ -182,14 +184,12 @@ where
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
let mut map = tri!(self.delegate.serialize_map(Some(1)));
tri!(map.serialize_entry(self.tag, self.variant_name));
map.end()
Err(self.bad_type(Unsupported::Unit))
}
fn serialize_unit_struct(self, _: &'static str) -> Result<Self::Ok, Self::Error> {
let mut map = tri!(self.delegate.serialize_map(Some(1)));
tri!(map.serialize_entry(self.tag, self.variant_name));
let mut map = try!(self.delegate.serialize_map(Some(1)));
try!(map.serialize_entry(self.tag, self.variant_name));
map.end()
}
@ -199,9 +199,9 @@ where
_: u32,
inner_variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
let mut map = tri!(self.delegate.serialize_map(Some(2)));
tri!(map.serialize_entry(self.tag, self.variant_name));
tri!(map.serialize_entry(inner_variant, &()));
let mut map = try!(self.delegate.serialize_map(Some(2)));
try!(map.serialize_entry(self.tag, self.variant_name));
try!(map.serialize_entry(inner_variant, &()));
map.end()
}
@ -226,9 +226,9 @@ where
where
T: Serialize,
{
let mut map = tri!(self.delegate.serialize_map(Some(2)));
tri!(map.serialize_entry(self.tag, self.variant_name));
tri!(map.serialize_entry(inner_variant, inner_value));
let mut map = try!(self.delegate.serialize_map(Some(2)));
try!(map.serialize_entry(self.tag, self.variant_name));
try!(map.serialize_entry(inner_variant, inner_value));
map.end()
}
@ -269,9 +269,9 @@ where
inner_variant: &'static str,
len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
let mut map = tri!(self.delegate.serialize_map(Some(2)));
tri!(map.serialize_entry(self.tag, self.variant_name));
tri!(map.serialize_key(inner_variant));
let mut map = try!(self.delegate.serialize_map(Some(2)));
try!(map.serialize_entry(self.tag, self.variant_name));
try!(map.serialize_key(inner_variant));
Ok(SerializeTupleVariantAsMapValue::new(
map,
inner_variant,
@ -280,8 +280,8 @@ where
}
fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
let mut map = tri!(self.delegate.serialize_map(len.map(|len| len + 1)));
tri!(map.serialize_entry(self.tag, self.variant_name));
let mut map = try!(self.delegate.serialize_map(len.map(|len| len + 1)));
try!(map.serialize_entry(self.tag, self.variant_name));
Ok(map)
}
@ -290,8 +290,8 @@ where
name: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
let mut state = tri!(self.delegate.serialize_struct(name, len + 1));
tri!(state.serialize_field(self.tag, self.variant_name));
let mut state = try!(self.delegate.serialize_struct(name, len + 1));
try!(state.serialize_field(self.tag, self.variant_name));
Ok(state)
}
@ -316,9 +316,9 @@ where
inner_variant: &'static str,
len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
let mut map = tri!(self.delegate.serialize_map(Some(2)));
tri!(map.serialize_entry(self.tag, self.variant_name));
tri!(map.serialize_key(inner_variant));
let mut map = try!(self.delegate.serialize_map(Some(2)));
try!(map.serialize_entry(self.tag, self.variant_name));
try!(map.serialize_key(inner_variant));
Ok(SerializeStructVariantAsMapValue::new(
map,
inner_variant,
@ -337,9 +337,9 @@ where
#[cfg(any(feature = "std", feature = "alloc"))]
mod content {
use crate::lib::*;
use lib::*;
use crate::ser::{self, Serialize, Serializer};
use ser::{self, Serialize, Serializer};
pub struct SerializeTupleVariantAsMapValue<M> {
map: M,
@ -350,8 +350,8 @@ mod content {
impl<M> SerializeTupleVariantAsMapValue<M> {
pub fn new(map: M, name: &'static str, len: usize) -> Self {
SerializeTupleVariantAsMapValue {
map,
name,
map: map,
name: name,
fields: Vec::with_capacity(len),
}
}
@ -368,13 +368,13 @@ mod content {
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<M::Error>::new()));
let value = try!(value.serialize(ContentSerializer::<M::Error>::new()));
self.fields.push(value);
Ok(())
}
fn end(mut self) -> Result<M::Ok, M::Error> {
tri!(self
try!(self
.map
.serialize_value(&Content::TupleStruct(self.name, self.fields)));
self.map.end()
@ -390,8 +390,8 @@ mod content {
impl<M> SerializeStructVariantAsMapValue<M> {
pub fn new(map: M, name: &'static str, len: usize) -> Self {
SerializeStructVariantAsMapValue {
map,
name,
map: map,
name: name,
fields: Vec::with_capacity(len),
}
}
@ -412,13 +412,13 @@ mod content {
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<M::Error>::new()));
let value = try!(value.serialize(ContentSerializer::<M::Error>::new()));
self.fields.push((key, value));
Ok(())
}
fn end(mut self) -> Result<M::Ok, M::Error> {
tri!(self
try!(self
.map
.serialize_value(&Content::Struct(self.name, self.fields)));
self.map.end()
@ -499,50 +499,50 @@ mod content {
}
Content::Seq(ref elements) => elements.serialize(serializer),
Content::Tuple(ref elements) => {
use crate::ser::SerializeTuple;
let mut tuple = tri!(serializer.serialize_tuple(elements.len()));
use ser::SerializeTuple;
let mut tuple = try!(serializer.serialize_tuple(elements.len()));
for e in elements {
tri!(tuple.serialize_element(e));
try!(tuple.serialize_element(e));
}
tuple.end()
}
Content::TupleStruct(n, ref fields) => {
use crate::ser::SerializeTupleStruct;
let mut ts = tri!(serializer.serialize_tuple_struct(n, fields.len()));
use ser::SerializeTupleStruct;
let mut ts = try!(serializer.serialize_tuple_struct(n, fields.len()));
for f in fields {
tri!(ts.serialize_field(f));
try!(ts.serialize_field(f));
}
ts.end()
}
Content::TupleVariant(n, i, v, ref fields) => {
use crate::ser::SerializeTupleVariant;
let mut tv = tri!(serializer.serialize_tuple_variant(n, i, v, fields.len()));
use ser::SerializeTupleVariant;
let mut tv = try!(serializer.serialize_tuple_variant(n, i, v, fields.len()));
for f in fields {
tri!(tv.serialize_field(f));
try!(tv.serialize_field(f));
}
tv.end()
}
Content::Map(ref entries) => {
use crate::ser::SerializeMap;
let mut map = tri!(serializer.serialize_map(Some(entries.len())));
for (k, v) in entries {
tri!(map.serialize_entry(k, v));
use ser::SerializeMap;
let mut map = try!(serializer.serialize_map(Some(entries.len())));
for &(ref k, ref v) in entries {
try!(map.serialize_entry(k, v));
}
map.end()
}
Content::Struct(n, ref fields) => {
use crate::ser::SerializeStruct;
let mut s = tri!(serializer.serialize_struct(n, fields.len()));
use ser::SerializeStruct;
let mut s = try!(serializer.serialize_struct(n, fields.len()));
for &(k, ref v) in fields {
tri!(s.serialize_field(k, v));
try!(s.serialize_field(k, v));
}
s.end()
}
Content::StructVariant(n, i, v, ref fields) => {
use crate::ser::SerializeStructVariant;
let mut sv = tri!(serializer.serialize_struct_variant(n, i, v, fields.len()));
use ser::SerializeStructVariant;
let mut sv = try!(serializer.serialize_struct_variant(n, i, v, fields.len()));
for &(k, ref v) in fields {
tri!(sv.serialize_field(k, v));
try!(sv.serialize_field(k, v));
}
sv.end()
}
@ -639,7 +639,7 @@ mod content {
where
T: Serialize,
{
Ok(Content::Some(Box::new(tri!(value.serialize(self)))))
Ok(Content::Some(Box::new(try!(value.serialize(self)))))
}
fn serialize_unit(self) -> Result<Content, E> {
@ -669,7 +669,7 @@ mod content {
{
Ok(Content::NewtypeStruct(
name,
Box::new(tri!(value.serialize(self))),
Box::new(try!(value.serialize(self))),
))
}
@ -687,7 +687,7 @@ mod content {
name,
variant_index,
variant,
Box::new(tri!(value.serialize(self))),
Box::new(try!(value.serialize(self))),
))
}
@ -711,7 +711,7 @@ mod content {
len: usize,
) -> Result<Self::SerializeTupleStruct, E> {
Ok(SerializeTupleStruct {
name,
name: name,
fields: Vec::with_capacity(len),
error: PhantomData,
})
@ -725,9 +725,9 @@ mod content {
len: usize,
) -> Result<Self::SerializeTupleVariant, E> {
Ok(SerializeTupleVariant {
name,
variant_index,
variant,
name: name,
variant_index: variant_index,
variant: variant,
fields: Vec::with_capacity(len),
error: PhantomData,
})
@ -747,7 +747,7 @@ mod content {
len: usize,
) -> Result<Self::SerializeStruct, E> {
Ok(SerializeStruct {
name,
name: name,
fields: Vec::with_capacity(len),
error: PhantomData,
})
@ -761,9 +761,9 @@ mod content {
len: usize,
) -> Result<Self::SerializeStructVariant, E> {
Ok(SerializeStructVariant {
name,
variant_index,
variant,
name: name,
variant_index: variant_index,
variant: variant,
fields: Vec::with_capacity(len),
error: PhantomData,
})
@ -786,7 +786,7 @@ mod content {
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.elements.push(value);
Ok(())
}
@ -812,7 +812,7 @@ mod content {
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.elements.push(value);
Ok(())
}
@ -839,7 +839,7 @@ mod content {
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.fields.push(value);
Ok(())
}
@ -868,7 +868,7 @@ mod content {
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.fields.push(value);
Ok(())
}
@ -900,7 +900,7 @@ mod content {
where
T: Serialize,
{
let key = tri!(key.serialize(ContentSerializer::<E>::new()));
let key = try!(key.serialize(ContentSerializer::<E>::new()));
self.key = Some(key);
Ok(())
}
@ -913,7 +913,7 @@ mod content {
.key
.take()
.expect("serialize_value called before serialize_key");
let value = tri!(value.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.entries.push((key, value));
Ok(())
}
@ -927,8 +927,8 @@ mod content {
K: Serialize,
V: Serialize,
{
let key = tri!(key.serialize(ContentSerializer::<E>::new()));
let value = tri!(value.serialize(ContentSerializer::<E>::new()));
let key = try!(key.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.entries.push((key, value));
Ok(())
}
@ -951,7 +951,7 @@ mod content {
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.fields.push((key, value));
Ok(())
}
@ -980,7 +980,7 @@ mod content {
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.fields.push((key, value));
Ok(())
}
@ -1025,7 +1025,7 @@ where
type SerializeTupleStruct = Impossible<Self::Ok, M::Error>;
type SerializeMap = FlatMapSerializeMap<'a, M>;
type SerializeStruct = FlatMapSerializeStruct<'a, M>;
type SerializeTupleVariant = FlatMapSerializeTupleVariantAsMapValue<'a, M>;
type SerializeTupleVariant = Impossible<Self::Ok, M::Error>;
type SerializeStructVariant = FlatMapSerializeStructVariantAsMapValue<'a, M>;
fn serialize_bool(self, _: bool) -> Result<Self::Ok, Self::Error> {
@ -1133,7 +1133,7 @@ where
where
T: Serialize,
{
tri!(self.0.serialize_key(variant));
try!(self.0.serialize_key(variant));
self.0.serialize_value(value)
}
@ -1157,11 +1157,10 @@ where
self,
_: &'static str,
_: u32,
variant: &'static str,
_: &'static str,
_: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
tri!(self.0.serialize_key(variant));
Ok(FlatMapSerializeTupleVariantAsMapValue::new(self.0))
Err(Self::bad_type(Unsupported::Enum))
}
fn serialize_map(self, _: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
@ -1183,7 +1182,7 @@ where
inner_variant: &'static str,
_: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
tri!(self.0.serialize_key(inner_variant));
try!(self.0.serialize_key(inner_variant));
Ok(FlatMapSerializeStructVariantAsMapValue::new(
self.0,
inner_variant,
@ -1260,52 +1259,6 @@ where
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
#[cfg(any(feature = "std", feature = "alloc"))]
pub struct FlatMapSerializeTupleVariantAsMapValue<'a, M: 'a> {
map: &'a mut M,
fields: Vec<Content>,
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'a, M> FlatMapSerializeTupleVariantAsMapValue<'a, M>
where
M: SerializeMap + 'a,
{
fn new(map: &'a mut M) -> Self {
FlatMapSerializeTupleVariantAsMapValue {
map,
fields: Vec::new(),
}
}
}
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'a, M> ser::SerializeTupleVariant for FlatMapSerializeTupleVariantAsMapValue<'a, M>
where
M: SerializeMap + 'a,
{
type Ok = ();
type Error = M::Error;
fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<M::Error>::new()));
self.fields.push(value);
Ok(())
}
fn end(self) -> Result<(), Self::Error> {
tri!(self.map.serialize_value(&Content::Seq(self.fields)));
Ok(())
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
#[cfg(any(feature = "std", feature = "alloc"))]
pub struct FlatMapSerializeStructVariantAsMapValue<'a, M: 'a> {
map: &'a mut M,
@ -1320,8 +1273,8 @@ where
{
fn new(map: &'a mut M, name: &'static str) -> FlatMapSerializeStructVariantAsMapValue<'a, M> {
FlatMapSerializeStructVariantAsMapValue {
map,
name,
map: map,
name: name,
fields: Vec::new(),
}
}
@ -1343,43 +1296,15 @@ where
where
T: Serialize,
{
let value = tri!(value.serialize(ContentSerializer::<M::Error>::new()));
let value = try!(value.serialize(ContentSerializer::<M::Error>::new()));
self.fields.push((key, value));
Ok(())
}
fn end(self) -> Result<(), Self::Error> {
tri!(self
try!(self
.map
.serialize_value(&Content::Struct(self.name, self.fields)));
Ok(())
}
}
pub struct AdjacentlyTaggedEnumVariant {
pub enum_name: &'static str,
pub variant_index: u32,
pub variant_name: &'static str,
}
impl Serialize for AdjacentlyTaggedEnumVariant {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.serialize_unit_variant(self.enum_name, self.variant_index, self.variant_name)
}
}
// Error when Serialize for a non_exhaustive remote enum encounters a variant
// that is not recognized.
pub struct CannotSerializeVariant<T>(pub T);
impl<T> Display for CannotSerializeVariant<T>
where
T: Debug,
{
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
write!(formatter, "enum variant cannot be serialized: {:?}", self.0)
}
}

16
serde/src/de/size_hint.rs → serde/src/private/size_hint.rs
View File

@ -1,4 +1,4 @@
use crate::lib::*;
use lib::*;
pub fn from_bounds<I>(iter: &I) -> Option<usize>
where
@ -8,17 +8,9 @@ where
}
#[cfg(any(feature = "std", feature = "alloc"))]
pub fn cautious<Element>(hint: Option<usize>) -> usize {
const MAX_PREALLOC_BYTES: usize = 1024 * 1024;
if mem::size_of::<Element>() == 0 {
0
} else {
cmp::min(
hint.unwrap_or(0),
MAX_PREALLOC_BYTES / mem::size_of::<Element>(),
)
}
#[inline]
pub fn cautious(hint: Option<usize>) -> usize {
cmp::min(hint.unwrap_or(0), 4096)
}
fn helper(bounds: (usize, Option<usize>)) -> Option<usize> {

18
serde/src/ser/fmt.rs
View File

@ -1,5 +1,5 @@
use crate::lib::*;
use crate::ser::{Error, Impossible, Serialize, Serializer};
use lib::*;
use ser::{Error, Impossible, Serialize, Serializer};
impl Error for fmt::Error {
fn custom<T: Display>(_msg: T) -> Self {
@ -17,9 +17,8 @@ macro_rules! fmt_primitives {
};
}
/// ```edition2021
/// use serde::ser::Serialize;
/// use serde_derive::Serialize;
/// ```edition2018
/// use serde::Serialize;
/// use std::fmt::{self, Display};
///
/// #[derive(Serialize)]
@ -52,12 +51,10 @@ impl<'a, 'b> Serializer for &'a mut fmt::Formatter<'b> {
serialize_i16: i16,
serialize_i32: i32,
serialize_i64: i64,
serialize_i128: i128,
serialize_u8: u8,
serialize_u16: u16,
serialize_u32: u32,
serialize_u64: u64,
serialize_u128: u128,
serialize_f32: f32,
serialize_f64: f64,
serialize_char: char,
@ -65,6 +62,13 @@ impl<'a, 'b> Serializer for &'a mut fmt::Formatter<'b> {
serialize_unit_struct: &'static str,
}
serde_if_integer128! {
fmt_primitives! {
serialize_i128: i128,
serialize_u128: u128,
}
}
fn serialize_unit_variant(
self,
_name: &'static str,

321
serde/src/ser/impls.rs
View File

@ -1,6 +1,6 @@
use crate::lib::*;
use lib::*;
use crate::ser::{Error, Serialize, SerializeTuple, Serializer};
use ser::{Error, Serialize, SerializeTuple, Serializer};
////////////////////////////////////////////////////////////////////////////////
@ -24,17 +24,20 @@ primitive_impl!(i8, serialize_i8);
primitive_impl!(i16, serialize_i16);
primitive_impl!(i32, serialize_i32);
primitive_impl!(i64, serialize_i64);
primitive_impl!(i128, serialize_i128);
primitive_impl!(usize, serialize_u64 as u64);
primitive_impl!(u8, serialize_u8);
primitive_impl!(u16, serialize_u16);
primitive_impl!(u32, serialize_u32);
primitive_impl!(u64, serialize_u64);
primitive_impl!(u128, serialize_u128);
primitive_impl!(f32, serialize_f32);
primitive_impl!(f64, serialize_f64);
primitive_impl!(char, serialize_char);
serde_if_integer128! {
primitive_impl!(i128, serialize_i128);
primitive_impl!(u128, serialize_u128);
}
////////////////////////////////////////////////////////////////////////////////
impl Serialize for str {
@ -48,7 +51,6 @@ impl Serialize for str {
}
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
impl Serialize for String {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
@ -70,8 +72,7 @@ impl<'a> Serialize for fmt::Arguments<'a> {
////////////////////////////////////////////////////////////////////////////////
#[cfg(any(feature = "std", not(no_core_cstr)))]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
#[cfg(feature = "std")]
impl Serialize for CStr {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
@ -82,8 +83,7 @@ impl Serialize for CStr {
}
}
#[cfg(any(feature = "std", all(not(no_core_cstr), feature = "alloc")))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
#[cfg(feature = "std")]
impl Serialize for CString {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
@ -133,7 +133,7 @@ impl<T> Serialize for [T; 0] {
where
S: Serializer,
{
tri!(serializer.serialize_tuple(0)).end()
try!(serializer.serialize_tuple(0)).end()
}
}
@ -149,9 +149,9 @@ macro_rules! array_impls {
where
S: Serializer,
{
let mut seq = tri!(serializer.serialize_tuple($len));
let mut seq = try!(serializer.serialize_tuple($len));
for e in self {
tri!(seq.serialize_element(e));
try!(seq.serialize_element(e));
}
seq.end()
}
@ -182,35 +182,9 @@ where
}
}
#[cfg(not(no_relaxed_trait_bounds))]
#[cfg(any(feature = "std", feature = "alloc"))]
macro_rules! seq_impl {
(
$(#[$attr:meta])*
$ty:ident <T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound:ident)*>
) => {
$(#[$attr])*
impl<T $(, $typaram)*> Serialize for $ty<T $(, $typaram)*>
where
T: Serialize,
{
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.collect_seq(self)
}
}
}
}
#[cfg(no_relaxed_trait_bounds)]
macro_rules! seq_impl {
(
$(#[$attr:meta])*
$ty:ident <T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound:ident)*>
) => {
$(#[$attr])*
($ty:ident < T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound:ident)* >) => {
impl<T $(, $typaram)*> Serialize for $ty<T $(, $typaram)*>
where
T: Serialize $(+ $tbound1 $(+ $tbound2)*)*,
@ -227,41 +201,23 @@ macro_rules! seq_impl {
}
}
seq_impl! {
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
BinaryHeap<T: Ord>
}
#[cfg(any(feature = "std", feature = "alloc"))]
seq_impl!(BinaryHeap<T: Ord>);
seq_impl! {
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
BTreeSet<T: Ord>
}
#[cfg(any(feature = "std", feature = "alloc"))]
seq_impl!(BTreeSet<T: Ord>);
seq_impl! {
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
HashSet<T: Eq + Hash, H: BuildHasher>
}
#[cfg(feature = "std")]
seq_impl!(HashSet<T: Eq + Hash, H: BuildHasher>);
seq_impl! {
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
LinkedList<T>
}
#[cfg(any(feature = "std", feature = "alloc"))]
seq_impl!(LinkedList<T>);
seq_impl! {
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
Vec<T>
}
#[cfg(any(feature = "std", feature = "alloc"))]
seq_impl!(Vec<T>);
seq_impl! {
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
VecDeque<T>
}
#[cfg(any(feature = "std", feature = "alloc"))]
seq_impl!(VecDeque<T>);
////////////////////////////////////////////////////////////////////////////////
@ -274,32 +230,16 @@ where
S: Serializer,
{
use super::SerializeStruct;
let mut state = tri!(serializer.serialize_struct("Range", 2));
tri!(state.serialize_field("start", &self.start));
tri!(state.serialize_field("end", &self.end));
state.end()
}
}
////////////////////////////////////////////////////////////////////////////////
impl<Idx> Serialize for RangeFrom<Idx>
where
Idx: Serialize,
{
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
use super::SerializeStruct;
let mut state = tri!(serializer.serialize_struct("RangeFrom", 1));
tri!(state.serialize_field("start", &self.start));
let mut state = try!(serializer.serialize_struct("Range", 2));
try!(state.serialize_field("start", &self.start));
try!(state.serialize_field("end", &self.end));
state.end()
}
}
////////////////////////////////////////////////////////////////////////////////
#[cfg(not(no_range_inclusive))]
impl<Idx> Serialize for RangeInclusive<Idx>
where
Idx: Serialize,
@ -309,32 +249,16 @@ where
S: Serializer,
{
use super::SerializeStruct;
let mut state = tri!(serializer.serialize_struct("RangeInclusive", 2));
tri!(state.serialize_field("start", &self.start()));
tri!(state.serialize_field("end", &self.end()));
state.end()
}
}
////////////////////////////////////////////////////////////////////////////////
impl<Idx> Serialize for RangeTo<Idx>
where
Idx: Serialize,
{
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
use super::SerializeStruct;
let mut state = tri!(serializer.serialize_struct("RangeTo", 1));
tri!(state.serialize_field("end", &self.end));
let mut state = try!(serializer.serialize_struct("RangeInclusive", 2));
try!(state.serialize_field("start", &self.start()));
try!(state.serialize_field("end", &self.end()));
state.end()
}
}
////////////////////////////////////////////////////////////////////////////////
#[cfg(any(not(no_ops_bound), all(feature = "std", not(no_collections_bound))))]
impl<T> Serialize for Bound<T>
where
T: Serialize,
@ -368,7 +292,6 @@ impl Serialize for () {
}
#[cfg(feature = "unstable")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "unstable")))]
impl Serialize for ! {
fn serialize<S>(&self, _serializer: S) -> Result<S::Ok, S::Error>
where
@ -392,9 +315,9 @@ macro_rules! tuple_impls {
where
S: Serializer,
{
let mut tuple = tri!(serializer.serialize_tuple($len));
let mut tuple = try!(serializer.serialize_tuple($len));
$(
tri!(tuple.serialize_element(&self.$n));
try!(tuple.serialize_element(&self.$n));
)+
tuple.end()
}
@ -424,36 +347,9 @@ tuple_impls! {
////////////////////////////////////////////////////////////////////////////////
#[cfg(not(no_relaxed_trait_bounds))]
#[cfg(any(feature = "std", feature = "alloc"))]
macro_rules! map_impl {
(
$(#[$attr:meta])*
$ty:ident <K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound:ident)*>
) => {
$(#[$attr])*
impl<K, V $(, $typaram)*> Serialize for $ty<K, V $(, $typaram)*>
where
K: Serialize,
V: Serialize,
{
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.collect_map(self)
}
}
}
}
#[cfg(no_relaxed_trait_bounds)]
macro_rules! map_impl {
(
$(#[$attr:meta])*
$ty:ident <K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound:ident)*>
) => {
$(#[$attr])*
($ty:ident < K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound:ident)* >) => {
impl<K, V $(, $typaram)*> Serialize for $ty<K, V $(, $typaram)*>
where
K: Serialize $(+ $kbound1 $(+ $kbound2)*)*,
@ -471,26 +367,20 @@ macro_rules! map_impl {
}
}
map_impl! {
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
BTreeMap<K: Ord, V>
}
#[cfg(any(feature = "std", feature = "alloc"))]
map_impl!(BTreeMap<K: Ord, V>);
map_impl! {
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
HashMap<K: Eq + Hash, V, H: BuildHasher>
}
#[cfg(feature = "std")]
map_impl!(HashMap<K: Eq + Hash, V, H: BuildHasher>);
////////////////////////////////////////////////////////////////////////////////
macro_rules! deref_impl {
(
$(#[$attr:meta])*
$(#[doc = $doc:tt])*
<$($desc:tt)+
) => {
$(#[$attr])*
$(#[doc = $doc])*
impl <$($desc)+ {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
@ -503,20 +393,13 @@ macro_rules! deref_impl {
};
}
deref_impl! {
<'a, T: ?Sized> Serialize for &'a T where T: Serialize
}
deref_impl!(<'a, T: ?Sized> Serialize for &'a T where T: Serialize);
deref_impl!(<'a, T: ?Sized> Serialize for &'a mut T where T: Serialize);
deref_impl! {
<'a, T: ?Sized> Serialize for &'a mut T where T: Serialize
}
deref_impl! {
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
<T: ?Sized> Serialize for Box<T> where T: Serialize
}
#[cfg(any(feature = "std", feature = "alloc"))]
deref_impl!(<T: ?Sized> Serialize for Box<T> where T: Serialize);
#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
deref_impl! {
/// This impl requires the [`"rc"`] Cargo feature of Serde.
///
@ -526,11 +409,10 @@ deref_impl! {
/// repeated data.
///
/// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc
#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
#[cfg_attr(doc_cfg, doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))))]
<T: ?Sized> Serialize for Rc<T> where T: Serialize
}
#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
deref_impl! {
/// This impl requires the [`"rc"`] Cargo feature of Serde.
///
@ -540,16 +422,11 @@ deref_impl! {
/// repeated data.
///
/// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc
#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
#[cfg_attr(doc_cfg, doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))))]
<T: ?Sized> Serialize for Arc<T> where T: Serialize
}
deref_impl! {
#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))]
<'a, T: ?Sized> Serialize for Cow<'a, T> where T: Serialize + ToOwned
}
#[cfg(any(feature = "std", feature = "alloc"))]
deref_impl!(<'a, T: ?Sized> Serialize for Cow<'a, T> where T: Serialize + ToOwned);
////////////////////////////////////////////////////////////////////////////////
@ -557,10 +434,6 @@ deref_impl! {
///
/// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc
#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
#[cfg_attr(
doc_cfg,
doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc"))))
)]
impl<T: ?Sized> Serialize for RcWeak<T>
where
T: Serialize,
@ -577,10 +450,6 @@ where
///
/// [`"rc"`]: https://serde.rs/feature-flags.html#-features-rc
#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
#[cfg_attr(
doc_cfg,
doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc"))))
)]
impl<T: ?Sized> Serialize for ArcWeak<T>
where
T: Serialize,
@ -596,8 +465,9 @@ where
////////////////////////////////////////////////////////////////////////////////
macro_rules! nonzero_integers {
($($T:ident,)+) => {
( $( $T: ident, )+ ) => {
$(
#[cfg(not(no_num_nonzero))]
impl Serialize for num::$T {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -615,7 +485,6 @@ nonzero_integers! {
NonZeroU16,
NonZeroU32,
NonZeroU64,
NonZeroU128,
NonZeroUsize,
}
@ -625,10 +494,22 @@ nonzero_integers! {
NonZeroI16,
NonZeroI32,
NonZeroI64,
NonZeroI128,
NonZeroIsize,
}
// Currently 128-bit integers do not work on Emscripten targets so we need an
// additional `#[cfg]`
serde_if_integer128! {
nonzero_integers! {
NonZeroU128,
}
#[cfg(not(no_num_nonzero_signed))]
nonzero_integers! {
NonZeroI128,
}
}
impl<T> Serialize for Cell<T>
where
T: Serialize + Copy,
@ -641,7 +522,7 @@ where
}
}
impl<T: ?Sized> Serialize for RefCell<T>
impl<T> Serialize for RefCell<T>
where
T: Serialize,
{
@ -657,8 +538,7 @@ where
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl<T: ?Sized> Serialize for Mutex<T>
impl<T> Serialize for Mutex<T>
where
T: Serialize,
{
@ -674,8 +554,7 @@ where
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl<T: ?Sized> Serialize for RwLock<T>
impl<T> Serialize for RwLock<T>
where
T: Serialize,
{
@ -712,15 +591,16 @@ where
////////////////////////////////////////////////////////////////////////////////
#[cfg(any(feature = "std", not(no_core_duration)))]
impl Serialize for Duration {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
use super::SerializeStruct;
let mut state = tri!(serializer.serialize_struct("Duration", 2));
tri!(state.serialize_field("secs", &self.as_secs()));
tri!(state.serialize_field("nanos", &self.subsec_nanos()));
let mut state = try!(serializer.serialize_struct("Duration", 2));
try!(state.serialize_field("secs", &self.as_secs()));
try!(state.serialize_field("nanos", &self.subsec_nanos()));
state.end()
}
}
@ -728,20 +608,18 @@ impl Serialize for Duration {
////////////////////////////////////////////////////////////////////////////////
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for SystemTime {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
use super::SerializeStruct;
let duration_since_epoch = match self.duration_since(UNIX_EPOCH) {
Ok(duration_since_epoch) => duration_since_epoch,
Err(_) => return Err(S::Error::custom("SystemTime must be later than UNIX_EPOCH")),
};
let mut state = tri!(serializer.serialize_struct("SystemTime", 2));
tri!(state.serialize_field("secs_since_epoch", &duration_since_epoch.as_secs()));
tri!(state.serialize_field("nanos_since_epoch", &duration_since_epoch.subsec_nanos()));
let duration_since_epoch = self
.duration_since(UNIX_EPOCH)
.map_err(|_| S::Error::custom("SystemTime must be later than UNIX_EPOCH"))?;
let mut state = try!(serializer.serialize_struct("SystemTime", 2));
try!(state.serialize_field("secs_since_epoch", &duration_since_epoch.as_secs()));
try!(state.serialize_field("nanos_since_epoch", &duration_since_epoch.subsec_nanos()));
state.end()
}
}
@ -773,7 +651,6 @@ macro_rules! serialize_display_bounded_length {
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for net::IpAddr {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -798,7 +675,7 @@ impl Serialize for net::IpAddr {
}
#[cfg(feature = "std")]
const DEC_DIGITS_LUT: &[u8] = b"\
const DEC_DIGITS_LUT: &'static [u8] = b"\
0001020304050607080910111213141516171819\
2021222324252627282930313233343536373839\
4041424344454647484950515253545556575859\
@ -844,7 +721,6 @@ fn test_format_u8() {
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for net::Ipv4Addr {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -859,9 +735,8 @@ impl Serialize for net::Ipv4Addr {
// Skip over delimiters that we initialized buf with
written += format_u8(*oct, &mut buf[written + 1..]) + 1;
}
// Safety: We've only written ASCII bytes to the buffer, so it is valid UTF-8
let buf = unsafe { str::from_utf8_unchecked(&buf[..written]) };
serializer.serialize_str(buf)
// We've only written ASCII bytes to the buffer, so it is valid UTF-8
serializer.serialize_str(unsafe { str::from_utf8_unchecked(&buf[..written]) })
} else {
self.octets().serialize(serializer)
}
@ -869,7 +744,6 @@ impl Serialize for net::Ipv4Addr {
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for net::Ipv6Addr {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -886,7 +760,6 @@ impl Serialize for net::Ipv6Addr {
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for net::SocketAddr {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -911,7 +784,6 @@ impl Serialize for net::SocketAddr {
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for net::SocketAddrV4 {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -928,7 +800,6 @@ impl Serialize for net::SocketAddrV4 {
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for net::SocketAddrV6 {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -950,7 +821,6 @@ impl Serialize for net::SocketAddrV6 {
////////////////////////////////////////////////////////////////////////////////
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for Path {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -964,7 +834,6 @@ impl Serialize for Path {
}
#[cfg(feature = "std")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
impl Serialize for PathBuf {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -975,7 +844,6 @@ impl Serialize for PathBuf {
}
#[cfg(all(feature = "std", any(unix, windows)))]
#[cfg_attr(doc_cfg, doc(cfg(all(feature = "std", any(unix, windows)))))]
impl Serialize for OsStr {
#[cfg(unix)]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
@ -998,7 +866,6 @@ impl Serialize for OsStr {
}
#[cfg(all(feature = "std", any(unix, windows)))]
#[cfg_attr(doc_cfg, doc(cfg(all(feature = "std", any(unix, windows)))))]
impl Serialize for OsString {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
@ -1023,6 +890,7 @@ where
}
}
#[cfg(not(no_core_reverse))]
impl<T> Serialize for Reverse<T>
where
T: Serialize,
@ -1040,17 +908,15 @@ where
#[cfg(all(feature = "std", not(no_std_atomic)))]
macro_rules! atomic_impl {
($($ty:ident $size:expr)*) => {
($($ty:ident)*) => {
$(
#[cfg(any(no_target_has_atomic, target_has_atomic = $size))]
#[cfg_attr(doc_cfg, doc(cfg(all(feature = "std", target_has_atomic = $size))))]
impl Serialize for $ty {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
// Matches the atomic ordering used in libcore for the Debug impl
self.load(Ordering::Relaxed).serialize(serializer)
self.load(Ordering::SeqCst).serialize(serializer)
}
}
)*
@ -1059,19 +925,12 @@ macro_rules! atomic_impl {
#[cfg(all(feature = "std", not(no_std_atomic)))]
atomic_impl! {
AtomicBool "8"
AtomicI8 "8"
AtomicI16 "16"
AtomicI32 "32"
AtomicIsize "ptr"
AtomicU8 "8"
AtomicU16 "16"
AtomicU32 "32"
AtomicUsize "ptr"
AtomicBool
AtomicI8 AtomicI16 AtomicI32 AtomicIsize
AtomicU8 AtomicU16 AtomicU32 AtomicUsize
}
#[cfg(all(feature = "std", not(no_std_atomic64)))]
atomic_impl! {
AtomicI64 "64"
AtomicU64 "64"
AtomicI64 AtomicU64
}

6
serde/src/ser/impossible.rs
View File

@ -1,8 +1,8 @@
//! This module contains `Impossible` serializer and its implementations.
use crate::lib::*;
use lib::*;
use crate::ser::{
use ser::{
self, Serialize, SerializeMap, SerializeSeq, SerializeStruct, SerializeStructVariant,
SerializeTuple, SerializeTupleStruct, SerializeTupleVariant,
};
@ -15,7 +15,7 @@ use crate::ser::{
/// [`SerializeTuple`], [`SerializeTupleStruct`], [`SerializeTupleVariant`],
/// [`SerializeMap`], [`SerializeStruct`], and [`SerializeStructVariant`].
///
/// ```edition2021
/// ```edition2018
/// # use serde::ser::{Serializer, Impossible};
/// # use serde::__private::doc::Error;
/// #

278
serde/src/ser/mod.rs
View File

@ -30,7 +30,7 @@
//! # The Serializer trait
//!
//! [`Serializer`] implementations are provided by third-party crates, for
//! example [`serde_json`], [`serde_yaml`] and [`postcard`].
//! example [`serde_json`], [`serde_yaml`] and [`bincode`].
//!
//! A partial list of well-maintained formats is given on the [Serde
//! website][data formats].
@ -61,8 +61,8 @@
//! - RefCell\<T\>
//! - Mutex\<T\>
//! - RwLock\<T\>
//! - Rc\<T\>&emsp;*(if* features = \["rc"\] *is enabled)*
//! - Arc\<T\>&emsp;*(if* features = \["rc"\] *is enabled)*
//! - Rc\<T\>&emsp;*(if* features = ["rc"] *is enabled)*
//! - Arc\<T\>&emsp;*(if* features = ["rc"] *is enabled)*
//! - **Collection types**:
//! - BTreeMap\<K, V\>
//! - BTreeSet\<T\>
@ -99,7 +99,7 @@
//! [`LinkedHashMap<K, V>`]: https://docs.rs/linked-hash-map/*/linked_hash_map/struct.LinkedHashMap.html
//! [`Serialize`]: ../trait.Serialize.html
//! [`Serializer`]: ../trait.Serializer.html
//! [`postcard`]: https://github.com/jamesmunns/postcard
//! [`bincode`]: https://github.com/servo/bincode
//! [`linked-hash-map`]: https://crates.io/crates/linked-hash-map
//! [`serde_derive`]: https://crates.io/crates/serde_derive
//! [`serde_json`]: https://github.com/serde-rs/json
@ -107,7 +107,7 @@
//! [derive section of the manual]: https://serde.rs/derive.html
//! [data formats]: https://serde.rs/#data-formats
use crate::lib::*;
use lib::*;
mod fmt;
mod impls;
@ -115,15 +115,12 @@ mod impossible;
pub use self::impossible::Impossible;
#[cfg(not(any(feature = "std", feature = "unstable")))]
#[doc(no_inline)]
pub use crate::std_error::Error as StdError;
#[cfg(all(feature = "unstable", not(feature = "std")))]
#[doc(no_inline)]
pub use core::error::Error as StdError;
#[cfg(feature = "std")]
#[doc(no_inline)]
pub use std::error::Error as StdError;
#[cfg(not(feature = "std"))]
#[doc(no_inline)]
pub use std_error::Error as StdError;
////////////////////////////////////////////////////////////////////////////////
@ -149,7 +146,7 @@ macro_rules! declare_error_trait {
/// For example, a filesystem [`Path`] may refuse to serialize
/// itself if it contains invalid UTF-8 data.
///
/// ```edition2021
/// ```edition2018
/// # struct Path;
/// #
/// # impl Path {
@ -194,8 +191,8 @@ declare_error_trait!(Error: Sized + Debug + Display);
/// by Serde.
///
/// Serde provides `Serialize` implementations for many Rust primitive and
/// standard library types. The complete list is [here][crate::ser]. All of
/// these can be serialized using Serde out of the box.
/// standard library types. The complete list is [here][ser]. All of these can
/// be serialized using Serde out of the box.
///
/// Additionally, Serde provides a procedural macro called [`serde_derive`] to
/// automatically generate `Serialize` implementations for structs and enums in
@ -215,13 +212,14 @@ declare_error_trait!(Error: Sized + Debug + Display);
/// [`linked-hash-map`]: https://crates.io/crates/linked-hash-map
/// [`serde_derive`]: https://crates.io/crates/serde_derive
/// [derive section of the manual]: https://serde.rs/derive.html
/// [ser]: https://docs.serde.rs/serde/ser/index.html
pub trait Serialize {
/// Serialize this value into the given Serde serializer.
///
/// See the [Implementing `Serialize`] section of the manual for more
/// information about how to implement this method.
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeStruct, Serializer};
///
/// struct Person {
@ -316,7 +314,7 @@ pub trait Serialize {
/// - For example the `E::S` in `enum E { S { r: u8, g: u8, b: u8 } }`.
///
/// Many Serde serializers produce text or binary data as output, for example
/// JSON or Postcard. This is not a requirement of the `Serializer` trait, and
/// JSON or Bincode. This is not a requirement of the `Serializer` trait, and
/// there are serializers that do not produce text or binary output. One example
/// is the `serde_json::value::Serializer` (distinct from the main `serde_json`
/// serializer) that produces a `serde_json::Value` data structure in memory as
@ -388,7 +386,7 @@ pub trait Serializer: Sized {
/// Serialize a `bool` value.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -410,7 +408,7 @@ pub trait Serializer: Sized {
/// reasonable implementation would be to cast the value to `i64` and
/// forward to `serialize_i64`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -432,7 +430,7 @@ pub trait Serializer: Sized {
/// reasonable implementation would be to cast the value to `i64` and
/// forward to `serialize_i64`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -454,7 +452,7 @@ pub trait Serializer: Sized {
/// reasonable implementation would be to cast the value to `i64` and
/// forward to `serialize_i64`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -472,7 +470,7 @@ pub trait Serializer: Sized {
/// Serialize an `i64` value.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -488,27 +486,30 @@ pub trait Serializer: Sized {
/// ```
fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error>;
/// Serialize an `i128` value.
///
/// ```edition2021
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
/// #
/// impl Serialize for i128 {
/// fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
/// where
/// S: Serializer,
/// {
/// serializer.serialize_i128(*self)
/// }
/// }
/// ```
///
/// The default behavior unconditionally returns an error.
fn serialize_i128(self, v: i128) -> Result<Self::Ok, Self::Error> {
let _ = v;
Err(Error::custom("i128 is not supported"))
serde_if_integer128! {
/// Serialize an `i128` value.
///
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
/// #
/// impl Serialize for i128 {
/// fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
/// where
/// S: Serializer,
/// {
/// serializer.serialize_i128(*self)
/// }
/// }
/// ```
///
/// This method is available only on Rust compiler versions >=1.26. The
/// default behavior unconditionally returns an error.
fn serialize_i128(self, v: i128) -> Result<Self::Ok, Self::Error> {
let _ = v;
Err(Error::custom("i128 is not supported"))
}
}
/// Serialize a `u8` value.
@ -517,7 +518,7 @@ pub trait Serializer: Sized {
/// reasonable implementation would be to cast the value to `u64` and
/// forward to `serialize_u64`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -539,7 +540,7 @@ pub trait Serializer: Sized {
/// reasonable implementation would be to cast the value to `u64` and
/// forward to `serialize_u64`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -561,7 +562,7 @@ pub trait Serializer: Sized {
/// reasonable implementation would be to cast the value to `u64` and
/// forward to `serialize_u64`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -579,7 +580,7 @@ pub trait Serializer: Sized {
/// Serialize a `u64` value.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -595,27 +596,30 @@ pub trait Serializer: Sized {
/// ```
fn serialize_u64(self, v: u64) -> Result<Self::Ok, Self::Error>;
/// Serialize a `u128` value.
///
/// ```edition2021
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
/// #
/// impl Serialize for u128 {
/// fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
/// where
/// S: Serializer,
/// {
/// serializer.serialize_u128(*self)
/// }
/// }
/// ```
///
/// The default behavior unconditionally returns an error.
fn serialize_u128(self, v: u128) -> Result<Self::Ok, Self::Error> {
let _ = v;
Err(Error::custom("u128 is not supported"))
serde_if_integer128! {
/// Serialize a `u128` value.
///
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
/// #
/// impl Serialize for u128 {
/// fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
/// where
/// S: Serializer,
/// {
/// serializer.serialize_u128(*self)
/// }
/// }
/// ```
///
/// This method is available only on Rust compiler versions >=1.26. The
/// default behavior unconditionally returns an error.
fn serialize_u128(self, v: u128) -> Result<Self::Ok, Self::Error> {
let _ = v;
Err(Error::custom("u128 is not supported"))
}
}
/// Serialize an `f32` value.
@ -624,7 +628,7 @@ pub trait Serializer: Sized {
/// reasonable implementation would be to cast the value to `f64` and
/// forward to `serialize_f64`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -642,7 +646,7 @@ pub trait Serializer: Sized {
/// Serialize an `f64` value.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -663,7 +667,7 @@ pub trait Serializer: Sized {
/// If the format does not support characters, it is reasonable to serialize
/// it as a single element `str` or a `u32`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -681,7 +685,7 @@ pub trait Serializer: Sized {
/// Serialize a `&str`.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -705,7 +709,7 @@ pub trait Serializer: Sized {
/// `serialize_seq`. If forwarded, the implementation looks usually just
/// like this:
///
/// ```edition2021
/// ```edition2018
/// # use serde::ser::{Serializer, SerializeSeq};
/// # use serde::__private::doc::Error;
/// #
@ -734,7 +738,7 @@ pub trait Serializer: Sized {
/// Serialize a [`None`] value.
///
/// ```edition2021
/// ```edition2018
/// # use serde::{Serialize, Serializer};
/// #
/// # enum Option<T> {
@ -767,7 +771,7 @@ pub trait Serializer: Sized {
/// Serialize a [`Some(T)`] value.
///
/// ```edition2021
/// ```edition2018
/// # use serde::{Serialize, Serializer};
/// #
/// # enum Option<T> {
@ -802,7 +806,7 @@ pub trait Serializer: Sized {
/// Serialize a `()` value.
///
/// ```edition2021
/// ```edition2018
/// # use serde::Serializer;
/// #
/// # serde::__private_serialize!();
@ -822,7 +826,7 @@ pub trait Serializer: Sized {
///
/// A reasonable implementation would be to forward to `serialize_unit`.
///
/// ```edition2021
/// ```edition2018
/// use serde::{Serialize, Serializer};
///
/// struct Nothing;
@ -844,7 +848,7 @@ pub trait Serializer: Sized {
/// this variant within the enum, and the `variant` is the name of the
/// variant.
///
/// ```edition2021
/// ```edition2018
/// use serde::{Serialize, Serializer};
///
/// enum E {
@ -877,7 +881,7 @@ pub trait Serializer: Sized {
/// wrappers around the data they contain. A reasonable implementation would
/// be to forward to `value.serialize(self)`.
///
/// ```edition2021
/// ```edition2018
/// use serde::{Serialize, Serializer};
///
/// struct Millimeters(u8);
@ -905,7 +909,7 @@ pub trait Serializer: Sized {
/// this variant within the enum, and the `variant` is the name of the
/// variant. The `value` is the data contained within this newtype variant.
///
/// ```edition2021
/// ```edition2018
/// use serde::{Serialize, Serializer};
///
/// enum E {
@ -943,7 +947,7 @@ pub trait Serializer: Sized {
/// not be computable before the sequence is iterated. Some serializers only
/// support sequences whose length is known up front.
///
/// ```edition2021
/// ```edition2018
/// # use std::marker::PhantomData;
/// #
/// # struct Vec<T>(PhantomData<T>);
@ -956,14 +960,14 @@ pub trait Serializer: Sized {
/// #
/// # impl<'a, T> IntoIterator for &'a Vec<T> {
/// # type Item = &'a T;
/// # type IntoIter = Box<dyn Iterator<Item = &'a T>>;
/// # type IntoIter = Box<Iterator<Item = &'a T>>;
/// #
/// # fn into_iter(self) -> Self::IntoIter {
/// # unimplemented!()
/// # }
/// # }
/// #
/// use serde::ser::{Serialize, SerializeSeq, Serializer};
/// use serde::ser::{Serialize, Serializer, SerializeSeq};
///
/// impl<T> Serialize for Vec<T>
/// where
@ -988,8 +992,8 @@ pub trait Serializer: Sized {
/// This call must be followed by zero or more calls to `serialize_element`,
/// then a call to `end`.
///
/// ```edition2021
/// use serde::ser::{Serialize, SerializeTuple, Serializer};
/// ```edition2018
/// use serde::ser::{Serialize, Serializer, SerializeTuple};
///
/// # mod fool {
/// # trait Serialize {}
@ -1018,7 +1022,7 @@ pub trait Serializer: Sized {
/// }
/// ```
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeTuple, Serializer};
///
/// const VRAM_SIZE: usize = 386;
@ -1046,7 +1050,7 @@ pub trait Serializer: Sized {
/// The `name` is the name of the tuple struct and the `len` is the number
/// of data fields that will be serialized.
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeTupleStruct, Serializer};
///
/// struct Rgb(u8, u8, u8);
@ -1078,7 +1082,7 @@ pub trait Serializer: Sized {
/// this variant within the enum, the `variant` is the name of the variant,
/// and the `len` is the number of data fields that will be serialized.
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeTupleVariant, Serializer};
///
/// enum E {
@ -1124,7 +1128,7 @@ pub trait Serializer: Sized {
/// be computable before the map is iterated. Some serializers only support
/// maps whose length is known up front.
///
/// ```edition2021
/// ```edition2018
/// # use std::marker::PhantomData;
/// #
/// # struct HashMap<K, V>(PhantomData<K>, PhantomData<V>);
@ -1137,14 +1141,14 @@ pub trait Serializer: Sized {
/// #
/// # impl<'a, K, V> IntoIterator for &'a HashMap<K, V> {
/// # type Item = (&'a K, &'a V);
/// # type IntoIter = Box<dyn Iterator<Item = (&'a K, &'a V)>>;
/// # type IntoIter = Box<Iterator<Item = (&'a K, &'a V)>>;
/// #
/// # fn into_iter(self) -> Self::IntoIter {
/// # unimplemented!()
/// # }
/// # }
/// #
/// use serde::ser::{Serialize, SerializeMap, Serializer};
/// use serde::ser::{Serialize, Serializer, SerializeMap};
///
/// impl<K, V> Serialize for HashMap<K, V>
/// where
@ -1172,7 +1176,7 @@ pub trait Serializer: Sized {
/// The `name` is the name of the struct and the `len` is the number of
/// data fields that will be serialized.
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeStruct, Serializer};
///
/// struct Rgb {
@ -1208,7 +1212,7 @@ pub trait Serializer: Sized {
/// this variant within the enum, the `variant` is the name of the variant,
/// and the `len` is the number of data fields that will be serialized.
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeStructVariant, Serializer};
///
/// enum E {
@ -1250,7 +1254,7 @@ pub trait Serializer: Sized {
/// using [`serialize_seq`]. Implementors should not need to override this
/// method.
///
/// ```edition2021
/// ```edition2018
/// use serde::{Serialize, Serializer};
///
/// struct SecretlyOneHigher {
@ -1273,9 +1277,22 @@ pub trait Serializer: Sized {
I: IntoIterator,
<I as IntoIterator>::Item: Serialize,
{
let mut iter = iter.into_iter();
let mut serializer = tri!(self.serialize_seq(iterator_len_hint(&iter)));
tri!(iter.try_for_each(|item| serializer.serialize_element(&item)));
let iter = iter.into_iter();
let mut serializer = try!(self.serialize_seq(iterator_len_hint(&iter)));
#[cfg(not(no_iterator_try_fold))]
{
let mut iter = iter;
try!(iter.try_for_each(|item| serializer.serialize_element(&item)));
}
#[cfg(no_iterator_try_fold)]
{
for item in iter {
try!(serializer.serialize_element(&item));
}
}
serializer.end()
}
@ -1285,7 +1302,7 @@ pub trait Serializer: Sized {
/// using [`serialize_map`]. Implementors should not need to override this
/// method.
///
/// ```edition2021
/// ```edition2018
/// use serde::{Serialize, Serializer};
/// use std::collections::BTreeSet;
///
@ -1311,9 +1328,22 @@ pub trait Serializer: Sized {
V: Serialize,
I: IntoIterator<Item = (K, V)>,
{
let mut iter = iter.into_iter();
let mut serializer = tri!(self.serialize_map(iterator_len_hint(&iter)));
tri!(iter.try_for_each(|(key, value)| serializer.serialize_entry(&key, &value)));
let iter = iter.into_iter();
let mut serializer = try!(self.serialize_map(iterator_len_hint(&iter)));
#[cfg(not(no_iterator_try_fold))]
{
let mut iter = iter;
try!(iter.try_for_each(|(key, value)| serializer.serialize_entry(&key, &value)));
}
#[cfg(no_iterator_try_fold)]
{
for (key, value) in iter {
try!(serializer.serialize_entry(&key, &value));
}
}
serializer.end()
}
@ -1323,7 +1353,7 @@ pub trait Serializer: Sized {
/// delegates to [`serialize_str`]. Serializers are encouraged to provide a
/// more efficient implementation if possible.
///
/// ```edition2021
/// ```edition2018
/// # struct DateTime;
/// #
/// # impl DateTime {
@ -1338,7 +1368,9 @@ pub trait Serializer: Sized {
/// where
/// S: Serializer,
/// {
/// serializer.collect_str(&format_args!("{:?}{:?}", self.naive_local(), self.offset()))
/// serializer.collect_str(&format_args!("{:?}{:?}",
/// self.naive_local(),
/// self.offset()))
/// }
/// }
/// ```
@ -1359,7 +1391,7 @@ pub trait Serializer: Sized {
/// of this method. If no more sensible behavior is possible, the
/// implementation is expected to return an error.
///
/// ```edition2021
/// ```edition2018
/// # struct DateTime;
/// #
/// # impl DateTime {
@ -1374,7 +1406,9 @@ pub trait Serializer: Sized {
/// where
/// S: Serializer,
/// {
/// serializer.collect_str(&format_args!("{:?}{:?}", self.naive_local(), self.offset()))
/// serializer.collect_str(&format_args!("{:?}{:?}",
/// self.naive_local(),
/// self.offset()))
/// }
/// }
/// ```
@ -1389,10 +1423,10 @@ pub trait Serializer: Sized {
/// Some types have a human-readable form that may be somewhat expensive to
/// construct, as well as a binary form that is compact and efficient.
/// Generally text-based formats like JSON and YAML will prefer to use the
/// human-readable one and binary formats like Postcard will prefer the
/// human-readable one and binary formats like Bincode will prefer the
/// compact one.
///
/// ```edition2021
/// ```edition2018
/// # use std::fmt::{self, Display};
/// #
/// # struct Timestamp;
@ -1441,7 +1475,7 @@ pub trait Serializer: Sized {
///
/// # Example use
///
/// ```edition2021
/// ```edition2018
/// # use std::marker::PhantomData;
/// #
/// # struct Vec<T>(PhantomData<T>);
@ -1454,13 +1488,13 @@ pub trait Serializer: Sized {
/// #
/// # impl<'a, T> IntoIterator for &'a Vec<T> {
/// # type Item = &'a T;
/// # type IntoIter = Box<dyn Iterator<Item = &'a T>>;
/// # type IntoIter = Box<Iterator<Item = &'a T>>;
/// # fn into_iter(self) -> Self::IntoIter {
/// # unimplemented!()
/// # }
/// # }
/// #
/// use serde::ser::{Serialize, SerializeSeq, Serializer};
/// use serde::ser::{Serialize, Serializer, SerializeSeq};
///
/// impl<T> Serialize for Vec<T>
/// where
@ -1505,8 +1539,8 @@ pub trait SerializeSeq {
///
/// # Example use
///
/// ```edition2021
/// use serde::ser::{Serialize, SerializeTuple, Serializer};
/// ```edition2018
/// use serde::ser::{Serialize, Serializer, SerializeTuple};
///
/// # mod fool {
/// # trait Serialize {}
@ -1535,7 +1569,7 @@ pub trait SerializeSeq {
/// }
/// ```
///
/// ```edition2021
/// ```edition2018
/// # use std::marker::PhantomData;
/// #
/// # struct Array<T>(PhantomData<T>);
@ -1548,13 +1582,13 @@ pub trait SerializeSeq {
/// #
/// # impl<'a, T> IntoIterator for &'a Array<T> {
/// # type Item = &'a T;
/// # type IntoIter = Box<dyn Iterator<Item = &'a T>>;
/// # type IntoIter = Box<Iterator<Item = &'a T>>;
/// # fn into_iter(self) -> Self::IntoIter {
/// # unimplemented!()
/// # }
/// # }
/// #
/// use serde::ser::{Serialize, SerializeTuple, Serializer};
/// use serde::ser::{Serialize, Serializer, SerializeTuple};
///
/// # mod fool {
/// # trait Serialize {}
@ -1605,7 +1639,7 @@ pub trait SerializeTuple {
///
/// # Example use
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeTupleStruct, Serializer};
///
/// struct Rgb(u8, u8, u8);
@ -1650,7 +1684,7 @@ pub trait SerializeTupleStruct {
///
/// # Example use
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeTupleVariant, Serializer};
///
/// enum E {
@ -1708,7 +1742,7 @@ pub trait SerializeTupleVariant {
///
/// # Example use
///
/// ```edition2021
/// ```edition2018
/// # use std::marker::PhantomData;
/// #
/// # struct HashMap<K, V>(PhantomData<K>, PhantomData<V>);
@ -1721,14 +1755,14 @@ pub trait SerializeTupleVariant {
/// #
/// # impl<'a, K, V> IntoIterator for &'a HashMap<K, V> {
/// # type Item = (&'a K, &'a V);
/// # type IntoIter = Box<dyn Iterator<Item = (&'a K, &'a V)>>;
/// # type IntoIter = Box<Iterator<Item = (&'a K, &'a V)>>;
/// #
/// # fn into_iter(self) -> Self::IntoIter {
/// # unimplemented!()
/// # }
/// # }
/// #
/// use serde::ser::{Serialize, SerializeMap, Serializer};
/// use serde::ser::{Serialize, Serializer, SerializeMap};
///
/// impl<K, V> Serialize for HashMap<K, V>
/// where
@ -1807,7 +1841,7 @@ pub trait SerializeMap {
K: Serialize,
V: Serialize,
{
tri!(self.serialize_key(key));
try!(self.serialize_key(key));
self.serialize_value(value)
}
@ -1819,7 +1853,7 @@ pub trait SerializeMap {
///
/// # Example use
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeStruct, Serializer};
///
/// struct Rgb {
@ -1879,7 +1913,7 @@ pub trait SerializeStruct {
///
/// # Example use
///
/// ```edition2021
/// ```edition2018
/// use serde::ser::{Serialize, SerializeStructVariant, Serializer};
///
/// enum E {

8
serde/src/std_error.rs
View File

@ -1,4 +1,4 @@
use crate::lib::{Debug, Display};
use lib::{Debug, Display};
/// Either a re-export of std::error::Error or a new identical trait, depending
/// on whether Serde's "std" feature is enabled.
@ -9,7 +9,7 @@ use crate::lib::{Debug, Display};
/// generally provide their error types with a `std::error::Error` impl
/// directly:
///
/// ```edition2021
/// ```edition2018
/// #[derive(Debug)]
/// struct MySerError {...}
///
@ -29,7 +29,7 @@ use crate::lib::{Debug, Display};
/// std = ["serde/std"]
/// ```
///
/// ```edition2021
/// ```edition2018
/// #[cfg(feature = "std")]
/// impl std::error::Error for MySerError {}
/// ```
@ -37,7 +37,7 @@ use crate::lib::{Debug, Display};
/// ... or else provide the std Error impl unconditionally via Serde's
/// re-export:
///
/// ```edition2021
/// ```edition2018
/// impl serde::ser::StdError for MySerError {}
/// ```
pub trait Error: Debug + Display {

25
serde_derive/Cargo.toml
View File

@ -1,16 +1,16 @@
[package]
name = "serde_derive"
version = "1.0.197"
version = "1.0.136" # remember to update html_root_url
authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
categories = ["no-std", "no-std::no-alloc"]
description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
documentation = "https://serde.rs/derive.html"
homepage = "https://serde.rs"
keywords = ["serde", "serialization", "no_std", "derive"]
rust-version = "1.31"
license = "MIT OR Apache-2.0"
readme = "crates-io.md"
description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
homepage = "https://serde.rs"
repository = "https://github.com/serde-rs/serde"
rust-version = "1.56"
documentation = "https://serde.rs/derive.html"
keywords = ["serde", "serialization", "no_std"]
readme = "crates-io.md"
include = ["build.rs", "src/**/*.rs", "crates-io.md", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
[features]
default = []
@ -21,13 +21,12 @@ name = "serde_derive"
proc-macro = true
[dependencies]
proc-macro2 = { workspace = true, features = ["proc-macro"] }
quote = { workspace = true, features = ["proc-macro"] }
syn = { workspace = true, features = ["clone-impls", "derive", "parsing", "printing", "proc-macro"] }
proc-macro2 = "1.0"
quote = "1.0"
syn = "1.0.60"
[dev-dependencies]
serde = { version = "1", path = "../serde" }
serde = { version = "1.0", path = "../serde" }
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
rustdoc-args = ["--generate-link-to-definition"]

36
serde_derive/build.rs Normal file
View File

@ -0,0 +1,36 @@
use std::env;
use std::process::Command;
use std::str;
// The rustc-cfg strings below are *not* public API. Please let us know by
// opening a GitHub issue if your build environment requires some way to enable
// these cfgs other than by executing our build script.
fn main() {
let minor = match rustc_minor_version() {
Some(minor) => minor,
None => return,
};
// Underscore const names stabilized in Rust 1.37:
// https://blog.rust-lang.org/2019/08/15/Rust-1.37.0.html#using-unnamed-const-items-for-macros
if minor >= 37 {
println!("cargo:rustc-cfg=underscore_consts");
}
// The ptr::addr_of! macro stabilized in Rust 1.51:
// https://blog.rust-lang.org/2021/03/25/Rust-1.51.0.html#stabilized-apis
if minor >= 51 {
println!("cargo:rustc-cfg=ptr_addr_of");
}
}
fn rustc_minor_version() -> Option<u32> {
let rustc = env::var_os("RUSTC")?;
let output = Command::new(rustc).arg("--version").output().ok()?;
let version = str::from_utf8(&output.stdout).ok()?;
let mut pieces = version.split('.');
if pieces.next() != Some("rustc 1") {
return None;
}
pieces.next()?.parse().ok()
}

32
serde_derive/src/bound.rs
View File

@ -1,9 +1,12 @@
use crate::internals::ast::{Container, Data};
use crate::internals::{attr, ungroup};
use proc_macro2::Span;
use std::collections::HashSet;
use syn;
use syn::punctuated::{Pair, Punctuated};
use syn::Token;
use internals::ast::{Container, Data};
use internals::{attr, ungroup};
use proc_macro2::Span;
// Remove the default from every type parameter because in the generated impls
// they look like associated types: "error: associated type bindings are not
@ -144,7 +147,6 @@ pub fn with_bound(
fn visit_type(&mut self, ty: &'ast syn::Type) {
match ty {
#![cfg_attr(all(test, exhaustive), deny(non_exhaustive_omitted_patterns))]
syn::Type::Array(ty) => self.visit_type(&ty.elem),
syn::Type::BareFn(ty) => {
for arg in &ty.inputs {
@ -182,6 +184,9 @@ pub fn with_bound(
syn::Type::Infer(_) | syn::Type::Never(_) | syn::Type::Verbatim(_) => {}
#[cfg(test)]
syn::Type::__TestExhaustive(_) => unimplemented!(),
#[cfg(not(test))]
_ => {}
}
}
@ -196,14 +201,11 @@ pub fn with_bound(
syn::PathArguments::AngleBracketed(arguments) => {
for arg in &arguments.args {
match arg {
#![cfg_attr(all(test, exhaustive), deny(non_exhaustive_omitted_patterns))]
syn::GenericArgument::Type(arg) => self.visit_type(arg),
syn::GenericArgument::AssocType(arg) => self.visit_type(&arg.ty),
syn::GenericArgument::Binding(arg) => self.visit_type(&arg.ty),
syn::GenericArgument::Lifetime(_)
| syn::GenericArgument::Const(_)
| syn::GenericArgument::AssocConst(_)
| syn::GenericArgument::Constraint(_) => {}
_ => {}
| syn::GenericArgument::Constraint(_)
| syn::GenericArgument::Const(_) => {}
}
}
}
@ -225,10 +227,8 @@ pub fn with_bound(
fn visit_type_param_bound(&mut self, bound: &'ast syn::TypeParamBound) {
match bound {
#![cfg_attr(all(test, exhaustive), deny(non_exhaustive_omitted_patterns))]
syn::TypeParamBound::Trait(bound) => self.visit_path(&bound.path),
syn::TypeParamBound::Lifetime(_) | syn::TypeParamBound::Verbatim(_) => {}
_ => {}
syn::TypeParamBound::Lifetime(_) => {}
}
}
@ -253,7 +253,7 @@ pub fn with_bound(
};
match &cont.data {
Data::Enum(variants) => {
for variant in variants {
for variant in variants.iter() {
let relevant_fields = variant
.fields
.iter()
@ -336,7 +336,7 @@ pub fn with_self_bound(
pub fn with_lifetime_bound(generics: &syn::Generics, lifetime: &str) -> syn::Generics {
let bound = syn::Lifetime::new(lifetime, Span::call_site());
let def = syn::LifetimeParam {
let def = syn::LifetimeDef {
attrs: Vec::new(),
lifetime: bound.clone(),
colon_token: None,

1224
serde_derive/src/de.rs
View File

File diff suppressed because it is too large Load Diff

33
serde_derive/src/dummy.rs
View File

@ -1,7 +1,23 @@
use proc_macro2::TokenStream;
use quote::quote;
use proc_macro2::{Ident, TokenStream};
use quote::format_ident;
use syn;
use try;
pub fn wrap_in_const(
serde_path: Option<&syn::Path>,
trait_: &str,
ty: &Ident,
code: TokenStream,
) -> TokenStream {
let try_replacement = try::replacement();
let dummy_const = if cfg!(underscore_consts) {
format_ident!("_")
} else {
format_ident!("_IMPL_{}_FOR_{}", trait_, unraw(ty))
};
pub fn wrap_in_const(serde_path: Option<&syn::Path>, code: TokenStream) -> TokenStream {
let use_serde = match serde_path {
Some(path) => quote! {
use #path as _serde;
@ -15,9 +31,18 @@ pub fn wrap_in_const(serde_path: Option<&syn::Path>, code: TokenStream) -> Token
quote! {
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
const #dummy_const: () = {
#use_serde
#try_replacement
#code
};
}
}
#[allow(deprecated)]
fn unraw(ident: &Ident) -> String {
// str::trim_start_matches was added in 1.30, trim_left_matches deprecated
// in 1.33. We currently support rustc back to 1.15 so we need to continue
// to use the deprecated one.
ident.to_string().trim_left_matches("r#").to_owned()
}

2
serde_derive/src/fragment.rs
View File

@ -1,6 +1,6 @@
use proc_macro2::TokenStream;
use quote::ToTokens;
use syn::{token, Token};
use syn::token;
pub enum Fragment {
/// Tokens that can be used as an expression.

34
serde_derive/src/internals/ast.rs
View File

@ -1,8 +1,10 @@
//! A Serde ast, parsed from the Syn ast and ready to generate Rust code.
use crate::internals::{attr, check, Ctxt, Derive};
use internals::attr;
use internals::check;
use internals::{Ctxt, Derive};
use syn;
use syn::punctuated::Punctuated;
use syn::Token;
/// A source data structure annotated with `#[derive(Serialize)]` and/or `#[derive(Deserialize)]`,
/// parsed into an internal representation.
@ -86,12 +88,9 @@ impl<'a> Container<'a> {
if field.attrs.flatten() {
has_flatten = true;
}
field.attrs.rename_by_rules(
variant
.attrs
.rename_all_rules()
.or(attrs.rename_all_fields_rules()),
);
field
.attrs
.rename_by_rules(variant.attrs.rename_all_rules());
}
}
}
@ -122,7 +121,7 @@ impl<'a> Container<'a> {
}
impl<'a> Data<'a> {
pub fn all_fields(&'a self) -> Box<dyn Iterator<Item = &'a Field<'a>> + 'a> {
pub fn all_fields(&'a self) -> Box<Iterator<Item = &'a Field<'a>> + 'a> {
match self {
Data::Enum(variants) => {
Box::new(variants.iter().flat_map(|variant| variant.fields.iter()))
@ -141,7 +140,7 @@ fn enum_from_ast<'a>(
variants: &'a Punctuated<syn::Variant, Token![,]>,
container_default: &attr::Default,
) -> Vec<Variant<'a>> {
let variants: Vec<Variant> = variants
variants
.iter()
.map(|variant| {
let attrs = attr::Variant::from_ast(cx, variant);
@ -155,20 +154,7 @@ fn enum_from_ast<'a>(
original: variant,
}
})
.collect();
let index_of_last_tagged_variant = variants
.iter()
.rposition(|variant| !variant.attrs.untagged());
if let Some(index_of_last_tagged_variant) = index_of_last_tagged_variant {
for variant in &variants[..index_of_last_tagged_variant] {
if variant.attrs.untagged() {
cx.error_spanned_by(&variant.ident, "all variants with the #[serde(untagged)] attribute must be placed at the end of the enum");
}
}
}
variants
.collect()
}
fn struct_from_ast<'a>(

1465
serde_derive/src/internals/attr.rs
View File

File diff suppressed because it is too large Load Diff

23
serde_derive/src/internals/case.rs
View File

@ -1,9 +1,14 @@
//! Code to convert the Rust-styled field/variant (e.g. `my_field`, `MyType`) to the
//! case of the source (e.g. `my-field`, `MY_FIELD`).
use self::RenameRule::*;
// See https://users.rust-lang.org/t/psa-dealing-with-warning-unused-import-std-ascii-asciiext-in-today-s-nightly/13726
#[allow(deprecated, unused_imports)]
use std::ascii::AsciiExt;
use std::fmt::{self, Debug, Display};
use self::RenameRule::*;
/// The different possible ways to change case of fields in a struct, or variants in an enum.
#[derive(Copy, Clone, PartialEq)]
pub enum RenameRule {
@ -54,8 +59,8 @@ impl RenameRule {
}
/// Apply a renaming rule to an enum variant, returning the version expected in the source.
pub fn apply_to_variant(self, variant: &str) -> String {
match self {
pub fn apply_to_variant(&self, variant: &str) -> String {
match *self {
None | PascalCase => variant.to_owned(),
LowerCase => variant.to_ascii_lowercase(),
UpperCase => variant.to_ascii_uppercase(),
@ -79,8 +84,8 @@ impl RenameRule {
}
/// Apply a renaming rule to a struct field, returning the version expected in the source.
pub fn apply_to_field(self, field: &str) -> String {
match self {
pub fn apply_to_field(&self, field: &str) -> String {
match *self {
None | LowerCase | SnakeCase => field.to_owned(),
UpperCase => field.to_ascii_uppercase(),
PascalCase => {
@ -107,14 +112,6 @@ impl RenameRule {
ScreamingKebabCase => ScreamingSnakeCase.apply_to_field(field).replace('_', "-"),
}
}
/// Returns the `RenameRule` if it is not `None`, `rule_b` otherwise.
pub fn or(self, rule_b: Self) -> Self {
match self {
None => rule_b,
_ => self,
}
}
}
pub struct ParseError<'a> {

121
serde_derive/src/internals/check.rs
View File

@ -1,13 +1,11 @@
use crate::internals::ast::{Container, Data, Field, Style};
use crate::internals::attr::{Default, Identifier, TagType};
use crate::internals::{ungroup, Ctxt, Derive};
use internals::ast::{Container, Data, Field, Style};
use internals::attr::{Identifier, TagType};
use internals::{ungroup, Ctxt, Derive};
use syn::{Member, Type};
// Cross-cutting checks that require looking at more than a single attrs object.
// Simpler checks should happen when parsing and building the attrs.
/// Cross-cutting checks that require looking at more than a single attrs
/// object. Simpler checks should happen when parsing and building the attrs.
pub fn check(cx: &Ctxt, cont: &mut Container, derive: Derive) {
check_default_on_tuple(cx, cont);
check_remote_generic(cx, cont);
check_getter(cx, cont);
check_flatten(cx, cont);
check_identifier(cx, cont);
@ -18,63 +16,8 @@ pub fn check(cx: &Ctxt, cont: &mut Container, derive: Derive) {
check_from_and_try_from(cx, cont);
}
// If some field of a tuple struct is marked #[serde(default)] then all fields
// after it must also be marked with that attribute, or the struct must have a
// container-level serde(default) attribute. A field's default value is only
// used for tuple fields if the sequence is exhausted at that point; that means
// all subsequent fields will fail to deserialize if they don't have their own
// default.
fn check_default_on_tuple(cx: &Ctxt, cont: &Container) {
if let Default::None = cont.attrs.default() {
if let Data::Struct(Style::Tuple, fields) = &cont.data {
let mut first_default_index = None;
for (i, field) in fields.iter().enumerate() {
// Skipped fields automatically get the #[serde(default)]
// attribute. We are interested only on non-skipped fields here.
if field.attrs.skip_deserializing() {
continue;
}
if let Default::None = field.attrs.default() {
if let Some(first) = first_default_index {
cx.error_spanned_by(
field.ty,
format!("field must have #[serde(default)] because previous field {} has #[serde(default)]", first),
);
}
continue;
}
if first_default_index.is_none() {
first_default_index = Some(i);
}
}
}
}
}
// Remote derive definition type must have either all of the generics of the
// remote type:
//
// #[serde(remote = "Generic")]
// struct Generic<T> {…}
//
// or none of them, i.e. defining impls for one concrete instantiation of the
// remote type only:
//
// #[serde(remote = "Generic<T>")]
// struct ConcreteDef {…}
//
fn check_remote_generic(cx: &Ctxt, cont: &Container) {
if let Some(remote) = cont.attrs.remote() {
let local_has_generic = !cont.generics.params.is_empty();
let remote_has_generic = !remote.segments.last().unwrap().arguments.is_none();
if local_has_generic && remote_has_generic {
cx.error_spanned_by(remote, "remove generic parameters from this path");
}
}
}
// Getters are only allowed inside structs (not enums) with the `remote`
// attribute.
/// Getters are only allowed inside structs (not enums) with the `remote`
/// attribute.
fn check_getter(cx: &Ctxt, cont: &Container) {
match cont.data {
Data::Enum(_) => {
@ -96,7 +39,7 @@ fn check_getter(cx: &Ctxt, cont: &Container) {
}
}
// Flattening has some restrictions we can test.
/// Flattening has some restrictions we can test.
fn check_flatten(cx: &Ctxt, cont: &Container) {
match &cont.data {
Data::Enum(variants) => {
@ -135,16 +78,18 @@ fn check_flatten_field(cx: &Ctxt, style: Style, field: &Field) {
}
}
// The `other` attribute must be used at most once and it must be the last
// variant of an enum.
//
// Inside a `variant_identifier` all variants must be unit variants. Inside a
// `field_identifier` all but possibly one variant must be unit variants. The
// last variant may be a newtype variant which is an implicit "other" case.
/// The `other` attribute must be used at most once and it must be the last
/// variant of an enum.
///
/// Inside a `variant_identifier` all variants must be unit variants. Inside a
/// `field_identifier` all but possibly one variant must be unit variants. The
/// last variant may be a newtype variant which is an implicit "other" case.
fn check_identifier(cx: &Ctxt, cont: &Container) {
let variants = match &cont.data {
Data::Enum(variants) => variants,
Data::Struct(_, _) => return,
Data::Struct(_, _) => {
return;
}
};
for (i, variant) in variants.iter().enumerate() {
@ -221,15 +166,17 @@ fn check_identifier(cx: &Ctxt, cont: &Container) {
}
}
// Skip-(de)serializing attributes are not allowed on variants marked
// (de)serialize_with.
/// Skip-(de)serializing attributes are not allowed on variants marked
/// (de)serialize_with.
fn check_variant_skip_attrs(cx: &Ctxt, cont: &Container) {
let variants = match &cont.data {
Data::Enum(variants) => variants,
Data::Struct(_, _) => return,
Data::Struct(_, _) => {
return;
}
};
for variant in variants {
for variant in variants.iter() {
if variant.attrs.serialize_with().is_some() {
if variant.attrs.skip_serializing() {
cx.error_spanned_by(
@ -294,9 +241,10 @@ fn check_variant_skip_attrs(cx: &Ctxt, cont: &Container) {
}
}
// The tag of an internally-tagged struct variant must not be the same as either
// one of its fields, as this would result in duplicate keys in the serialized
// output and/or ambiguity in the to-be-deserialized input.
/// The tag of an internally-tagged struct variant must not be
/// the same as either one of its fields, as this would result in
/// duplicate keys in the serialized output and/or ambiguity in
/// the to-be-deserialized input.
fn check_internal_tag_field_name_conflict(cx: &Ctxt, cont: &Container) {
let variants = match &cont.data {
Data::Enum(variants) => variants,
@ -318,14 +266,9 @@ fn check_internal_tag_field_name_conflict(cx: &Ctxt, cont: &Container) {
for variant in variants {
match variant.style {
Style::Struct => {
if variant.attrs.untagged() {
continue;
}
for field in &variant.fields {
let check_ser =
!(field.attrs.skip_serializing() || variant.attrs.skip_serializing());
let check_de =
!(field.attrs.skip_deserializing() || variant.attrs.skip_deserializing());
let check_ser = !field.attrs.skip_serializing();
let check_de = !field.attrs.skip_deserializing();
let name = field.attrs.name();
let ser_name = name.serialize_name();
@ -347,8 +290,8 @@ fn check_internal_tag_field_name_conflict(cx: &Ctxt, cont: &Container) {
}
}
// In the case of adjacently-tagged enums, the type and the contents tag must
// differ, for the same reason.
/// In the case of adjacently-tagged enums, the type and the
/// contents tag must differ, for the same reason.
fn check_adjacent_tag_conflict(cx: &Ctxt, cont: &Container) {
let (type_tag, content_tag) = match cont.attrs.tag() {
TagType::Adjacent { tag, content } => (tag, content),
@ -366,7 +309,7 @@ fn check_adjacent_tag_conflict(cx: &Ctxt, cont: &Container) {
}
}
// Enums and unit structs cannot be transparent.
/// Enums and unit structs cannot be transparent.
fn check_transparent(cx: &Ctxt, cont: &mut Container, derive: Derive) {
if !cont.attrs.transparent() {
return;

18
serde_derive/src/internals/ctxt.rs
View File

@ -2,6 +2,7 @@ use quote::ToTokens;
use std::cell::RefCell;
use std::fmt::Display;
use std::thread;
use syn;
/// A type to collect errors together and format them.
///
@ -43,19 +44,12 @@ impl Ctxt {
}
/// Consume this object, producing a formatted error string if there are errors.
pub fn check(self) -> syn::Result<()> {
let mut errors = self.errors.borrow_mut().take().unwrap().into_iter();
let mut combined = match errors.next() {
Some(first) => first,
None => return Ok(()),
};
for rest in errors {
combined.combine(rest);
pub fn check(self) -> Result<(), Vec<syn::Error>> {
let errors = self.errors.borrow_mut().take().unwrap();
match errors.len() {
0 => Ok(()),
_ => Err(errors),
}
Err(combined)
}
}

11
serde_derive/src/internals/mod.rs
View File

@ -1,18 +1,19 @@
pub mod ast;
pub mod attr;
mod ctxt;
pub use self::ctxt::Ctxt;
mod receiver;
pub use self::receiver::replace_receiver;
mod case;
mod check;
mod ctxt;
mod receiver;
mod respan;
mod symbol;
use syn::Type;
pub use self::ctxt::Ctxt;
pub use self::receiver::replace_receiver;
#[derive(Copy, Clone)]
pub enum Derive {
Serialize,

25
serde_derive/src/internals/receiver.rs
View File

@ -1,11 +1,11 @@
use crate::internals::respan::respan;
use internals::respan::respan;
use proc_macro2::Span;
use quote::ToTokens;
use std::mem;
use syn::punctuated::Punctuated;
use syn::{
parse_quote, Data, DeriveInput, Expr, ExprPath, GenericArgument, GenericParam, Generics, Macro,
Path, PathArguments, QSelf, ReturnType, Token, Type, TypeParamBound, TypePath, WherePredicate,
Path, PathArguments, QSelf, ReturnType, Type, TypeParamBound, TypePath, WherePredicate,
};
pub fn replace_receiver(input: &mut DeriveInput) {
@ -107,7 +107,6 @@ impl ReplaceReceiver<'_> {
fn visit_type_mut_impl(&mut self, ty: &mut Type) {
match ty {
#![cfg_attr(all(test, exhaustive), deny(non_exhaustive_omitted_patterns))]
Type::Array(ty) => {
self.visit_type_mut(&mut ty.elem);
self.visit_expr_mut(&mut ty.len);
@ -148,6 +147,9 @@ impl ReplaceReceiver<'_> {
Type::Infer(_) | Type::Never(_) | Type::Verbatim(_) => {}
#[cfg(test)]
Type::__TestExhaustive(_) => unimplemented!(),
#[cfg(not(test))]
_ => {}
}
}
@ -178,14 +180,11 @@ impl ReplaceReceiver<'_> {
PathArguments::AngleBracketed(arguments) => {
for arg in &mut arguments.args {
match arg {
#![cfg_attr(all(test, exhaustive), deny(non_exhaustive_omitted_patterns))]
GenericArgument::Type(arg) => self.visit_type_mut(arg),
GenericArgument::AssocType(arg) => self.visit_type_mut(&mut arg.ty),
GenericArgument::Binding(arg) => self.visit_type_mut(&mut arg.ty),
GenericArgument::Lifetime(_)
| GenericArgument::Const(_)
| GenericArgument::AssocConst(_)
| GenericArgument::Constraint(_) => {}
_ => {}
| GenericArgument::Constraint(_)
| GenericArgument::Const(_) => {}
}
}
}
@ -207,10 +206,8 @@ impl ReplaceReceiver<'_> {
fn visit_type_param_bound_mut(&mut self, bound: &mut TypeParamBound) {
match bound {
#![cfg_attr(all(test, exhaustive), deny(non_exhaustive_omitted_patterns))]
TypeParamBound::Trait(bound) => self.visit_path_mut(&mut bound.path),
TypeParamBound::Lifetime(_) | TypeParamBound::Verbatim(_) => {}
_ => {}
TypeParamBound::Lifetime(_) => {}
}
}
@ -228,15 +225,13 @@ impl ReplaceReceiver<'_> {
if let Some(where_clause) = &mut generics.where_clause {
for predicate in &mut where_clause.predicates {
match predicate {
#![cfg_attr(all(test, exhaustive), deny(non_exhaustive_omitted_patterns))]
WherePredicate::Type(predicate) => {
self.visit_type_mut(&mut predicate.bounded_ty);
for bound in &mut predicate.bounds {
self.visit_type_param_bound_mut(bound);
}
}
WherePredicate::Lifetime(_) => {}
_ => {}
WherePredicate::Lifetime(_) | WherePredicate::Eq(_) => {}
}
}
}

5
serde_derive/src/internals/symbol.rs
View File

@ -13,19 +13,15 @@ pub const DEFAULT: Symbol = Symbol("default");
pub const DENY_UNKNOWN_FIELDS: Symbol = Symbol("deny_unknown_fields");
pub const DESERIALIZE: Symbol = Symbol("deserialize");
pub const DESERIALIZE_WITH: Symbol = Symbol("deserialize_with");
pub const EXPECTING: Symbol = Symbol("expecting");
pub const FIELD_IDENTIFIER: Symbol = Symbol("field_identifier");
pub const FLATTEN: Symbol = Symbol("flatten");
pub const FROM: Symbol = Symbol("from");
pub const GETTER: Symbol = Symbol("getter");
pub const INTO: Symbol = Symbol("into");
pub const NON_EXHAUSTIVE: Symbol = Symbol("non_exhaustive");
pub const OTHER: Symbol = Symbol("other");
pub const REMOTE: Symbol = Symbol("remote");
pub const RENAME: Symbol = Symbol("rename");
pub const RENAME_ALL: Symbol = Symbol("rename_all");
pub const RENAME_ALL_FIELDS: Symbol = Symbol("rename_all_fields");
pub const REPR: Symbol = Symbol("repr");
pub const SERDE: Symbol = Symbol("serde");
pub const SERIALIZE: Symbol = Symbol("serialize");
pub const SERIALIZE_WITH: Symbol = Symbol("serialize_with");
@ -39,6 +35,7 @@ pub const TRY_FROM: Symbol = Symbol("try_from");
pub const UNTAGGED: Symbol = Symbol("untagged");
pub const VARIANT_IDENTIFIER: Symbol = Symbol("variant_identifier");
pub const WITH: Symbol = Symbol("with");
pub const EXPECTING: Symbol = Symbol("expecting");
impl PartialEq<Symbol> for Ident {
fn eq(&self, word: &Symbol) -> bool {

28
serde_derive/src/lib.rs
View File

@ -1,7 +1,7 @@
//! This crate provides Serde's two derive macros.
//!
//! ```edition2021
//! # use serde_derive::{Deserialize, Serialize};
//! ```edition2018
//! # use serde_derive::{Serialize, Deserialize};
//! #
//! #[derive(Serialize, Deserialize)]
//! # struct S;
@ -13,7 +13,8 @@
//!
//! [https://serde.rs/derive.html]: https://serde.rs/derive.html
#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.197")]
#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.136")]
#![allow(unknown_lints, bare_trait_objects)]
// Ignored clippy lints
#![allow(
// clippy false positive: https://github.com/rust-lang/rust-clippy/issues/7054
@ -21,7 +22,6 @@
clippy::cognitive_complexity,
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/7575
clippy::collapsible_match,
clippy::derive_partial_eq_without_eq,
clippy::enum_variant_names,
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/6797
clippy::manual_map,
@ -42,7 +42,7 @@
clippy::enum_glob_use,
clippy::indexing_slicing,
clippy::items_after_statements,
clippy::let_underscore_untyped,
clippy::let_underscore_drop,
clippy::manual_assert,
clippy::map_err_ignore,
clippy::match_same_arms,
@ -50,6 +50,7 @@
clippy::match_wildcard_for_single_variants,
clippy::module_name_repetitions,
clippy::must_use_candidate,
clippy::option_if_let_else,
clippy::similar_names,
clippy::single_match_else,
clippy::struct_excessive_bools,
@ -59,18 +60,18 @@
clippy::use_self,
clippy::wildcard_imports
)]
#![cfg_attr(all(test, exhaustive), feature(non_exhaustive_omitted_patterns_lint))]
extern crate proc_macro2;
#[macro_use]
extern crate quote;
#[macro_use]
extern crate syn;
extern crate proc_macro;
extern crate proc_macro2;
mod internals;
use proc_macro::TokenStream;
use syn::parse_macro_input;
use syn::DeriveInput;
#[macro_use]
@ -82,13 +83,13 @@ mod de;
mod dummy;
mod pretend;
mod ser;
mod this;
mod try;
#[proc_macro_derive(Serialize, attributes(serde))]
pub fn derive_serialize(input: TokenStream) -> TokenStream {
let mut input = parse_macro_input!(input as DeriveInput);
ser::expand_derive_serialize(&mut input)
.unwrap_or_else(syn::Error::into_compile_error)
.unwrap_or_else(to_compile_errors)
.into()
}
@ -96,6 +97,11 @@ pub fn derive_serialize(input: TokenStream) -> TokenStream {
pub fn derive_deserialize(input: TokenStream) -> TokenStream {
let mut input = parse_macro_input!(input as DeriveInput);
de::expand_derive_deserialize(&mut input)
.unwrap_or_else(syn::Error::into_compile_error)
.unwrap_or_else(to_compile_errors)
.into()
}
fn to_compile_errors(errors: Vec<syn::Error>) -> proc_macro2::TokenStream {
let compile_errors = errors.iter().map(syn::Error::to_compile_error);
quote!(#(#compile_errors)*)
}

42
serde_derive/src/pretend.rs
View File

@ -1,6 +1,7 @@
use crate::internals::ast::{Container, Data, Field, Style, Variant};
use proc_macro2::TokenStream;
use quote::{format_ident, quote};
use quote::format_ident;
use internals::ast::{Container, Data, Field, Style, Variant};
// Suppress dead_code warnings that would otherwise appear when using a remote
// derive. Other than this pretend code, a struct annotated with remote derive
@ -64,14 +65,14 @@ pub fn pretend_used(cont: &Container, is_packed: bool) -> TokenStream {
fn pretend_fields_used(cont: &Container, is_packed: bool) -> TokenStream {
match &cont.data {
Data::Enum(variants) => pretend_fields_used_enum(cont, variants),
Data::Struct(Style::Struct | Style::Tuple | Style::Newtype, fields) => {
Data::Struct(Style::Struct, fields) => {
if is_packed {
pretend_fields_used_struct_packed(cont, fields)
} else {
pretend_fields_used_struct(cont, fields)
}
}
Data::Struct(Style::Unit, _) => quote!(),
Data::Struct(_, _) => quote!(),
}
}
@ -96,14 +97,29 @@ fn pretend_fields_used_struct_packed(cont: &Container, fields: &[Field]) -> Toke
let members = fields.iter().map(|field| &field.member).collect::<Vec<_>>();
quote! {
match _serde::__private::None::<&#type_ident #ty_generics> {
_serde::__private::Some(__v @ #type_ident { #(#members: _),* }) => {
#(
let _ = _serde::__private::ptr::addr_of!(__v.#members);
)*
#[cfg(ptr_addr_of)]
{
quote! {
match _serde::__private::None::<&#type_ident #ty_generics> {
_serde::__private::Some(__v @ #type_ident { #(#members: _),* }) => {
#(
let _ = _serde::__private::ptr::addr_of!(__v.#members);
)*
}
_ => {}
}
}
}
#[cfg(not(ptr_addr_of))]
{
let placeholders = (0usize..).map(|i| format_ident!("__v{}", i));
quote! {
match _serde::__private::None::<#type_ident #ty_generics> {
_serde::__private::Some(#type_ident { #(#members: #placeholders),* }) => {}
_ => {}
}
_ => {}
}
}
}
@ -115,13 +131,13 @@ fn pretend_fields_used_enum(cont: &Container, variants: &[Variant]) -> TokenStre
let patterns = variants
.iter()
.filter_map(|variant| match variant.style {
Style::Struct | Style::Tuple | Style::Newtype => {
Style::Struct => {
let variant_ident = &variant.ident;
let members = variant.fields.iter().map(|field| &field.member);
let placeholders = (0usize..).map(|i| format_ident!("__v{}", i));
Some(quote!(#type_ident::#variant_ident { #(#members: #placeholders),* }))
}
Style::Unit => None,
_ => None,
})
.collect::<Vec<_>>();

239
serde_derive/src/ser.rs
View File

@ -1,13 +1,17 @@
use crate::fragment::{Fragment, Match, Stmts};
use crate::internals::ast::{Container, Data, Field, Style, Variant};
use crate::internals::{attr, replace_receiver, Ctxt, Derive};
use crate::{bound, dummy, pretend, this};
use proc_macro2::{Span, TokenStream};
use quote::{quote, quote_spanned};
use syn::spanned::Spanned;
use syn::{parse_quote, Ident, Index, Member};
use syn::{self, Ident, Index, Member};
pub fn expand_derive_serialize(input: &mut syn::DeriveInput) -> syn::Result<TokenStream> {
use bound;
use dummy;
use fragment::{Fragment, Match, Stmts};
use internals::ast::{Container, Data, Field, Style, Variant};
use internals::{attr, replace_receiver, Ctxt, Derive};
use pretend;
pub fn expand_derive_serialize(
input: &mut syn::DeriveInput,
) -> Result<TokenStream, Vec<syn::Error>> {
replace_receiver(input);
let ctxt = Ctxt::new();
@ -54,6 +58,8 @@ pub fn expand_derive_serialize(input: &mut syn::DeriveInput) -> syn::Result<Toke
Ok(dummy::wrap_in_const(
cont.attrs.custom_serde_path(),
"SERIALIZE",
ident,
impl_block,
))
}
@ -76,13 +82,9 @@ struct Parameters {
self_var: Ident,
/// Path to the type the impl is for. Either a single `Ident` for local
/// types (does not include generic parameters) or `some::remote::Path` for
/// remote types.
this_type: syn::Path,
/// Same as `this_type` but using `::<T>` for generic parameters for use in
/// expression position.
this_value: syn::Path,
/// types or `some::remote::Ident` for remote types. Does not include
/// generic parameters.
this: syn::Path,
/// Generics including any explicit and inferred bounds for the impl.
generics: syn::Generics,
@ -103,15 +105,18 @@ impl Parameters {
Ident::new("self", Span::call_site())
};
let this_type = this::this_type(cont);
let this_value = this::this_value(cont);
let this = match cont.attrs.remote() {
Some(remote) => remote.clone(),
None => cont.ident.clone().into(),
};
let is_packed = cont.attrs.is_packed();
let generics = build_generics(cont);
Parameters {
self_var,
this_type,
this_value,
this,
generics,
is_remote,
is_packed,
@ -121,7 +126,7 @@ impl Parameters {
/// Type name to use in error messages and `&'static str` arguments to
/// various Serializer methods.
fn type_name(&self) -> String {
self.this_type.segments.last().unwrap().ident.to_string()
self.this.segments.last().unwrap().ident.to_string()
}
}
@ -282,7 +287,7 @@ fn serialize_tuple_struct(
.fold(quote!(0), |sum, expr| quote!(#sum + #expr));
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_tuple_struct(__serializer, #type_name, #len)?;
let #let_mut __serde_state = try!(_serde::Serializer::serialize_tuple_struct(__serializer, #type_name, #len));
#(#serialize_stmts)*
_serde::ser::SerializeTupleStruct::end(__serde_state)
}
@ -304,7 +309,7 @@ fn serialize_struct_tag_field(cattrs: &attr::Container, struct_trait: &StructTra
let type_name = cattrs.name().serialize_name();
let func = struct_trait.serialize_field(Span::call_site());
quote! {
#func(&mut __serde_state, #tag, #type_name)?;
try!(#func(&mut __serde_state, #tag, #type_name));
}
}
_ => quote! {},
@ -345,7 +350,7 @@ fn serialize_struct_as_struct(
);
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_struct(__serializer, #type_name, #len)?;
let #let_mut __serde_state = try!(_serde::Serializer::serialize_struct(__serializer, #type_name, #len));
#tag_field
#(#serialize_fields)*
_serde::ser::SerializeStruct::end(__serde_state)
@ -389,7 +394,7 @@ fn serialize_struct_as_map(
};
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_map(__serializer, #len)?;
let #let_mut __serde_state = try!(_serde::Serializer::serialize_map(__serializer, #len));
#tag_field
#(#serialize_fields)*
_serde::ser::SerializeMap::end(__serde_state)
@ -401,7 +406,7 @@ fn serialize_enum(params: &Parameters, variants: &[Variant], cattrs: &attr::Cont
let self_var = &params.self_var;
let mut arms: Vec<_> = variants
let arms: Vec<_> = variants
.iter()
.enumerate()
.map(|(variant_index, variant)| {
@ -409,12 +414,6 @@ fn serialize_enum(params: &Parameters, variants: &[Variant], cattrs: &attr::Cont
})
.collect();
if cattrs.remote().is_some() && cattrs.non_exhaustive() {
arms.push(quote! {
ref unrecognized => _serde::__private::Err(_serde::ser::Error::custom(_serde::__private::ser::CannotSerializeVariant(unrecognized))),
});
}
quote_expr! {
match *#self_var {
#(#arms)*
@ -428,7 +427,7 @@ fn serialize_variant(
variant_index: u32,
cattrs: &attr::Container,
) -> TokenStream {
let this_value = &params.this_value;
let this = &params.this;
let variant_ident = &variant.ident;
if variant.attrs.skip_serializing() {
@ -446,56 +445,47 @@ fn serialize_variant(
Style::Struct => quote!({ .. }),
};
quote! {
#this_value::#variant_ident #fields_pat => #skipped_err,
#this::#variant_ident #fields_pat => #skipped_err,
}
} else {
// variant wasn't skipped
let case = match variant.style {
Style::Unit => {
quote! {
#this_value::#variant_ident
#this::#variant_ident
}
}
Style::Newtype => {
quote! {
#this_value::#variant_ident(ref __field0)
#this::#variant_ident(ref __field0)
}
}
Style::Tuple => {
let field_names = (0..variant.fields.len())
.map(|i| Ident::new(&format!("__field{}", i), Span::call_site()));
quote! {
#this_value::#variant_ident(#(ref #field_names),*)
#this::#variant_ident(#(ref #field_names),*)
}
}
Style::Struct => {
let members = variant.fields.iter().map(|f| &f.member);
quote! {
#this_value::#variant_ident { #(ref #members),* }
#this::#variant_ident { #(ref #members),* }
}
}
};
let body = Match(match (cattrs.tag(), variant.attrs.untagged()) {
(attr::TagType::External, false) => {
let body = Match(match cattrs.tag() {
attr::TagType::External => {
serialize_externally_tagged_variant(params, variant, variant_index, cattrs)
}
(attr::TagType::Internal { tag }, false) => {
attr::TagType::Internal { tag } => {
serialize_internally_tagged_variant(params, variant, cattrs, tag)
}
(attr::TagType::Adjacent { tag, content }, false) => {
serialize_adjacently_tagged_variant(
params,
variant,
cattrs,
variant_index,
tag,
content,
)
}
(attr::TagType::None, _) | (_, true) => {
serialize_untagged_variant(params, variant, cattrs)
attr::TagType::Adjacent { tag, content } => {
serialize_adjacently_tagged_variant(params, variant, cattrs, tag, content)
}
attr::TagType::None => serialize_untagged_variant(params, variant, cattrs),
});
quote! {
@ -572,7 +562,7 @@ fn serialize_externally_tagged_variant(
},
params,
&variant.fields,
type_name,
&type_name,
),
}
}
@ -606,10 +596,10 @@ fn serialize_internally_tagged_variant(
match effective_style(variant) {
Style::Unit => {
quote_block! {
let mut __struct = _serde::Serializer::serialize_struct(
__serializer, #type_name, 1)?;
_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #tag, #variant_name)?;
let mut __struct = try!(_serde::Serializer::serialize_struct(
__serializer, #type_name, 1));
try!(_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #tag, #variant_name));
_serde::ser::SerializeStruct::end(__struct)
}
}
@ -637,7 +627,7 @@ fn serialize_internally_tagged_variant(
StructVariant::InternallyTagged { tag, variant_name },
params,
&variant.fields,
type_name,
&type_name,
),
Style::Tuple => unreachable!("checked in serde_derive_internals"),
}
@ -647,20 +637,12 @@ fn serialize_adjacently_tagged_variant(
params: &Parameters,
variant: &Variant,
cattrs: &attr::Container,
variant_index: u32,
tag: &str,
content: &str,
) -> Fragment {
let this_type = &params.this_type;
let this = &params.this;
let type_name = cattrs.name().serialize_name();
let variant_name = variant.attrs.name().serialize_name();
let serialize_variant = quote! {
&_serde::__private::ser::AdjacentlyTaggedEnumVariant {
enum_name: #type_name,
variant_index: #variant_index,
variant_name: #variant_name,
}
};
let inner = Stmts(if let Some(path) = variant.attrs.serialize_with() {
let ser = wrap_serialize_variant_with(params, path, variant);
@ -671,10 +653,10 @@ fn serialize_adjacently_tagged_variant(
match effective_style(variant) {
Style::Unit => {
return quote_block! {
let mut __struct = _serde::Serializer::serialize_struct(
__serializer, #type_name, 1)?;
_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #tag, #serialize_variant)?;
let mut __struct = try!(_serde::Serializer::serialize_struct(
__serializer, #type_name, 1));
try!(_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #tag, #variant_name));
_serde::ser::SerializeStruct::end(__struct)
};
}
@ -688,12 +670,12 @@ fn serialize_adjacently_tagged_variant(
let span = field.original.span();
let func = quote_spanned!(span=> _serde::ser::SerializeStruct::serialize_field);
return quote_block! {
let mut __struct = _serde::Serializer::serialize_struct(
__serializer, #type_name, 2)?;
_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #tag, #serialize_variant)?;
#func(
&mut __struct, #content, #field_expr)?;
let mut __struct = try!(_serde::Serializer::serialize_struct(
__serializer, #type_name, 2));
try!(_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #tag, #variant_name));
try!(#func(
&mut __struct, #content, #field_expr));
_serde::ser::SerializeStruct::end(__struct)
};
}
@ -704,13 +686,13 @@ fn serialize_adjacently_tagged_variant(
StructVariant::Untagged,
params,
&variant.fields,
variant_name,
&variant_name,
),
}
});
let fields_ty = variant.fields.iter().map(|f| &f.ty);
let fields_ident: &[_] = &match variant.style {
let fields_ident: &Vec<_> = &match variant.style {
Style::Unit => {
if variant.attrs.serialize_with().is_some() {
vec![]
@ -735,10 +717,9 @@ fn serialize_adjacently_tagged_variant(
let (wrapper_impl_generics, wrapper_ty_generics, _) = wrapper_generics.split_for_impl();
quote_block! {
#[doc(hidden)]
struct __AdjacentlyTagged #wrapper_generics #where_clause {
data: (#(&'__a #fields_ty,)*),
phantom: _serde::__private::PhantomData<#this_type #ty_generics>,
phantom: _serde::__private::PhantomData<#this #ty_generics>,
}
impl #wrapper_impl_generics _serde::Serialize for __AdjacentlyTagged #wrapper_ty_generics #where_clause {
@ -753,15 +734,15 @@ fn serialize_adjacently_tagged_variant(
}
}
let mut __struct = _serde::Serializer::serialize_struct(
__serializer, #type_name, 2)?;
_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #tag, #serialize_variant)?;
_serde::ser::SerializeStruct::serialize_field(
let mut __struct = try!(_serde::Serializer::serialize_struct(
__serializer, #type_name, 2));
try!(_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #tag, #variant_name));
try!(_serde::ser::SerializeStruct::serialize_field(
&mut __struct, #content, &__AdjacentlyTagged {
data: (#(#fields_ident,)*),
phantom: _serde::__private::PhantomData::<#this_type #ty_generics>,
})?;
phantom: _serde::__private::PhantomData::<#this #ty_generics>,
}));
_serde::ser::SerializeStruct::end(__struct)
}
}
@ -800,16 +781,16 @@ fn serialize_untagged_variant(
Style::Tuple => serialize_tuple_variant(TupleVariant::Untagged, params, &variant.fields),
Style::Struct => {
let type_name = cattrs.name().serialize_name();
serialize_struct_variant(StructVariant::Untagged, params, &variant.fields, type_name)
serialize_struct_variant(StructVariant::Untagged, params, &variant.fields, &type_name)
}
}
}
enum TupleVariant<'a> {
enum TupleVariant {
ExternallyTagged {
type_name: &'a str,
type_name: String,
variant_index: u32,
variant_name: &'a str,
variant_name: String,
},
Untagged,
}
@ -851,21 +832,21 @@ fn serialize_tuple_variant(
variant_name,
} => {
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_tuple_variant(
let #let_mut __serde_state = try!(_serde::Serializer::serialize_tuple_variant(
__serializer,
#type_name,
#variant_index,
#variant_name,
#len)?;
#len));
#(#serialize_stmts)*
_serde::ser::SerializeTupleVariant::end(__serde_state)
}
}
TupleVariant::Untagged => {
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_tuple(
let #let_mut __serde_state = try!(_serde::Serializer::serialize_tuple(
__serializer,
#len)?;
#len));
#(#serialize_stmts)*
_serde::ser::SerializeTuple::end(__serde_state)
}
@ -876,17 +857,17 @@ fn serialize_tuple_variant(
enum StructVariant<'a> {
ExternallyTagged {
variant_index: u32,
variant_name: &'a str,
variant_name: String,
},
InternallyTagged {
tag: &'a str,
variant_name: &'a str,
variant_name: String,
},
Untagged,
}
fn serialize_struct_variant(
context: StructVariant,
fn serialize_struct_variant<'a>(
context: StructVariant<'a>,
params: &Parameters,
fields: &[Field],
name: &str,
@ -928,40 +909,40 @@ fn serialize_struct_variant(
variant_name,
} => {
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_struct_variant(
let #let_mut __serde_state = try!(_serde::Serializer::serialize_struct_variant(
__serializer,
#name,
#variant_index,
#variant_name,
#len,
)?;
));
#(#serialize_fields)*
_serde::ser::SerializeStructVariant::end(__serde_state)
}
}
StructVariant::InternallyTagged { tag, variant_name } => {
quote_block! {
let mut __serde_state = _serde::Serializer::serialize_struct(
let mut __serde_state = try!(_serde::Serializer::serialize_struct(
__serializer,
#name,
#len + 1,
)?;
_serde::ser::SerializeStruct::serialize_field(
));
try!(_serde::ser::SerializeStruct::serialize_field(
&mut __serde_state,
#tag,
#variant_name,
)?;
));
#(#serialize_fields)*
_serde::ser::SerializeStruct::end(__serde_state)
}
}
StructVariant::Untagged => {
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_struct(
let #let_mut __serde_state = try!(_serde::Serializer::serialize_struct(
__serializer,
#name,
#len,
)?;
));
#(#serialize_fields)*
_serde::ser::SerializeStruct::end(__serde_state)
}
@ -969,8 +950,8 @@ fn serialize_struct_variant(
}
}
fn serialize_struct_variant_with_flatten(
context: StructVariant,
fn serialize_struct_variant_with_flatten<'a>(
context: StructVariant<'a>,
params: &Parameters,
fields: &[Field],
name: &str,
@ -990,7 +971,7 @@ fn serialize_struct_variant_with_flatten(
variant_index,
variant_name,
} => {
let this_type = &params.this_type;
let this = &params.this;
let fields_ty = fields.iter().map(|f| &f.ty);
let members = &fields.iter().map(|f| &f.member).collect::<Vec<_>>();
@ -999,10 +980,9 @@ fn serialize_struct_variant_with_flatten(
let (wrapper_impl_generics, wrapper_ty_generics, _) = wrapper_generics.split_for_impl();
quote_block! {
#[doc(hidden)]
struct __EnumFlatten #wrapper_generics #where_clause {
data: (#(&'__a #fields_ty,)*),
phantom: _serde::__private::PhantomData<#this_type #ty_generics>,
phantom: _serde::__private::PhantomData<#this #ty_generics>,
}
impl #wrapper_impl_generics _serde::Serialize for __EnumFlatten #wrapper_ty_generics #where_clause {
@ -1011,9 +991,9 @@ fn serialize_struct_variant_with_flatten(
__S: _serde::Serializer,
{
let (#(#members,)*) = self.data;
let #let_mut __serde_state = _serde::Serializer::serialize_map(
let #let_mut __serde_state = try!(_serde::Serializer::serialize_map(
__serializer,
_serde::__private::None)?;
_serde::__private::None));
#(#serialize_fields)*
_serde::ser::SerializeMap::end(__serde_state)
}
@ -1026,29 +1006,29 @@ fn serialize_struct_variant_with_flatten(
#variant_name,
&__EnumFlatten {
data: (#(#members,)*),
phantom: _serde::__private::PhantomData::<#this_type #ty_generics>,
phantom: _serde::__private::PhantomData::<#this #ty_generics>,
})
}
}
StructVariant::InternallyTagged { tag, variant_name } => {
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_map(
let #let_mut __serde_state = try!(_serde::Serializer::serialize_map(
__serializer,
_serde::__private::None)?;
_serde::ser::SerializeMap::serialize_entry(
_serde::__private::None));
try!(_serde::ser::SerializeMap::serialize_entry(
&mut __serde_state,
#tag,
#variant_name,
)?;
));
#(#serialize_fields)*
_serde::ser::SerializeMap::end(__serde_state)
}
}
StructVariant::Untagged => {
quote_block! {
let #let_mut __serde_state = _serde::Serializer::serialize_map(
let #let_mut __serde_state = try!(_serde::Serializer::serialize_map(
__serializer,
_serde::__private::None)?;
_serde::__private::None));
#(#serialize_fields)*
_serde::ser::SerializeMap::end(__serde_state)
}
@ -1093,7 +1073,7 @@ fn serialize_tuple_struct_visitor(
let span = field.original.span();
let func = tuple_trait.serialize_element(span);
let ser = quote! {
#func(&mut __serde_state, #field_expr)?;
try!(#func(&mut __serde_state, #field_expr));
};
match skip {
@ -1137,12 +1117,12 @@ fn serialize_struct_visitor(
let ser = if field.attrs.flatten() {
let func = quote_spanned!(span=> _serde::Serialize::serialize);
quote! {
#func(&#field_expr, _serde::__private::ser::FlatMapSerializer(&mut __serde_state))?;
try!(#func(&#field_expr, _serde::__private::ser::FlatMapSerializer(&mut __serde_state)));
}
} else {
let func = struct_trait.serialize_field(span);
quote! {
#func(&mut __serde_state, #key_expr, #field_expr)?;
try!(#func(&mut __serde_state, #key_expr, #field_expr));
}
};
@ -1154,7 +1134,7 @@ fn serialize_struct_visitor(
if !#skip {
#ser
} else {
#skip_func(&mut __serde_state, #key_expr)?;
try!(#skip_func(&mut __serde_state, #key_expr));
}
}
} else {
@ -1212,7 +1192,7 @@ fn wrap_serialize_with(
field_tys: &[&syn::Type],
field_exprs: &[TokenStream],
) -> TokenStream {
let this_type = &params.this_type;
let this = &params.this;
let (_, ty_generics, where_clause) = params.generics.split_for_impl();
let wrapper_generics = if field_exprs.is_empty() {
@ -1230,10 +1210,9 @@ fn wrap_serialize_with(
});
quote!({
#[doc(hidden)]
struct __SerializeWith #wrapper_impl_generics #where_clause {
values: (#(&'__a #field_tys, )*),
phantom: _serde::__private::PhantomData<#this_type #ty_generics>,
phantom: _serde::__private::PhantomData<#this #ty_generics>,
}
impl #wrapper_impl_generics _serde::Serialize for __SerializeWith #wrapper_ty_generics #where_clause {
@ -1247,14 +1226,14 @@ fn wrap_serialize_with(
&__SerializeWith {
values: (#(#field_exprs, )*),
phantom: _serde::__private::PhantomData::<#this_type #ty_generics>,
phantom: _serde::__private::PhantomData::<#this #ty_generics>,
}
})
}
// Serialization of an empty struct results in code like:
//
// let mut __serde_state = serializer.serialize_struct("S", 0)?;
// let mut __serde_state = try!(serializer.serialize_struct("S", 0));
// _serde::ser::SerializeStruct::end(__serde_state)
//
// where we want to omit the `mut` to avoid a warning.

32
serde_derive/src/this.rs
View File

@ -1,32 +0,0 @@
use crate::internals::ast::Container;
use syn::{Path, PathArguments, Token};
pub fn this_type(cont: &Container) -> Path {
if let Some(remote) = cont.attrs.remote() {
let mut this = remote.clone();
for segment in &mut this.segments {
if let PathArguments::AngleBracketed(arguments) = &mut segment.arguments {
arguments.colon2_token = None;
}
}
this
} else {
Path::from(cont.ident.clone())
}
}
pub fn this_value(cont: &Container) -> Path {
if let Some(remote) = cont.attrs.remote() {
let mut this = remote.clone();
for segment in &mut this.segments {
if let PathArguments::AngleBracketed(arguments) = &mut segment.arguments {
if arguments.colon2_token.is_none() {
arguments.colon2_token = Some(Token![::](arguments.lt_token.span));
}
}
}
this
} else {
Path::from(cont.ident.clone())
}
}

24
serde_derive/src/try.rs Normal file
View File

@ -0,0 +1,24 @@
use proc_macro2::{Punct, Spacing, TokenStream};
// None of our generated code requires the `From::from` error conversion
// performed by the standard library's `try!` macro. With this simplified macro
// we see a significant improvement in type checking and borrow checking time of
// the generated code and a slight improvement in binary size.
pub fn replacement() -> TokenStream {
// Cannot pass `$expr` to `quote!` prior to Rust 1.17.0 so interpolate it.
let dollar = Punct::new('$', Spacing::Alone);
quote! {
#[allow(unused_macros)]
macro_rules! try {
(#dollar __expr:expr) => {
match #dollar __expr {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
}
}
}

21
serde_derive_internals/Cargo.toml
View File

@ -1,24 +1,23 @@
[package]
name = "serde_derive_internals"
version = "0.29.0"
version = "0.26.0" # remember to update html_root_url
authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
description = "AST representation used by Serde derive macros. Unstable."
documentation = "https://docs.rs/serde_derive_internals"
exclude = ["build.rs"]
homepage = "https://serde.rs"
keywords = ["serde", "serialization"]
rust-version = "1.31"
license = "MIT OR Apache-2.0"
description = "AST representation used by Serde derive macros. Unstable."
homepage = "https://serde.rs"
repository = "https://github.com/serde-rs/serde"
rust-version = "1.56"
documentation = "https://docs.rs/serde_derive_internals"
keywords = ["serde", "serialization"]
include = ["lib.rs", "src/**/*.rs", "LICENSE-APACHE", "LICENSE-MIT"]
[lib]
path = "lib.rs"
[dependencies]
proc-macro2 = { workspace = true }
quote = { workspace = true }
syn = { workspace = true, features = ["clone-impls", "derive", "parsing", "printing"] }
proc-macro2 = "1.0"
quote = "1.0"
syn = { version = "1.0.60", default-features = false, features = ["derive", "parsing", "printing", "clone-impls"] }
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
rustdoc-args = ["--generate-link-to-definition"]

3
serde_derive_internals/build.rs
View File

@ -1,9 +1,6 @@
use std::path::Path;
fn main() {
println!("cargo:rerun-if-changed=build.rs");
println!("cargo:rerun-if-changed=src/mod.rs");
// Sometimes on Windows the git checkout does not correctly wire up the
// symlink from serde_derive_internals/src to serde_derive/src/internals.
// When this happens we'll just build based on relative paths within the git

12
serde_derive_internals/lib.rs
View File

@ -1,10 +1,10 @@
#![doc(html_root_url = "https://docs.rs/serde_derive_internals/0.29.0")]
#![doc(html_root_url = "https://docs.rs/serde_derive_internals/0.26.0")]
#![allow(unknown_lints, bare_trait_objects)]
// Ignored clippy lints
#![allow(
clippy::cognitive_complexity,
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/7575
clippy::collapsible_match,
clippy::derive_partial_eq_without_eq,
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/6797
clippy::manual_map,
clippy::missing_panics_doc,
@ -21,7 +21,7 @@
clippy::doc_markdown,
clippy::enum_glob_use,
clippy::items_after_statements,
clippy::let_underscore_untyped,
clippy::let_underscore_drop,
clippy::manual_assert,
clippy::match_same_arms,
// clippy bug: https://github.com/rust-lang/rust-clippy/issues/6984
@ -29,18 +29,18 @@
clippy::missing_errors_doc,
clippy::module_name_repetitions,
clippy::must_use_candidate,
clippy::return_self_not_must_use,
clippy::similar_names,
clippy::single_match_else,
clippy::struct_excessive_bools,
clippy::too_many_lines,
clippy::unused_self,
clippy::wildcard_imports
)]
#[macro_use]
extern crate syn;
extern crate proc_macro2;
extern crate quote;
extern crate syn;
#[cfg_attr(serde_build_from_git, path = "../serde_derive/src/internals/mod.rs")]
#[cfg_attr(not(serde_build_from_git), path = "src/mod.rs")]

24
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@ -0,0 +1,24 @@
[package]
name = "serde_test"
version = "1.0.136" # remember to update html_root_url
authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
rust-version = "1.15"
license = "MIT OR Apache-2.0"
description = "Token De/Serializer for testing De/Serialize implementations"
homepage = "https://serde.rs"
repository = "https://github.com/serde-rs/serde"
documentation = "https://docs.serde.rs/serde_test/"
keywords = ["serde", "serialization"]
readme = "crates-io.md"
include = ["build.rs", "src/**/*.rs", "crates-io.md", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
build = "build.rs"
[dependencies]
serde = { version = "1.0.60", path = "../serde" }
[dev-dependencies]
serde = { version = "1.0", path = "../serde" }
serde_derive = { version = "1.0", path = "../serde_derive" }
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]

1
serde_test/LICENSE-APACHE Symbolic link
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@ -0,0 +1 @@
../LICENSE-APACHE

1
serde_test/LICENSE-MIT Symbolic link
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@ -0,0 +1 @@
../LICENSE-MIT

1
serde_test/README.md Symbolic link
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@ -0,0 +1 @@
../README.md

48
serde_test/build.rs Normal file
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@ -0,0 +1,48 @@
use std::env;
use std::process::Command;
use std::str::{self, FromStr};
// The rustc-cfg strings below are *not* public API. Please let us know by
// opening a GitHub issue if your build environment requires some way to enable
// these cfgs other than by executing our build script.
fn main() {
let minor = match rustc_minor_version() {
Some(minor) => minor,
None => return,
};
// #[track_caller] stabilized in Rust 1.46:
// https://blog.rust-lang.org/2020/08/27/Rust-1.46.0.html#track_caller
if minor >= 46 {
println!("cargo:rustc-cfg=track_caller");
}
}
fn rustc_minor_version() -> Option<u32> {
let rustc = match env::var_os("RUSTC") {
Some(rustc) => rustc,
None => return None,
};
let output = match Command::new(rustc).arg("--version").output() {
Ok(output) => output,
Err(_) => return None,
};
let version = match str::from_utf8(&output.stdout) {
Ok(version) => version,
Err(_) => return None,
};
let mut pieces = version.split('.');
if pieces.next() != Some("rustc 1") {
return None;
}
let next = match pieces.next() {
Some(next) => next,
None => return None,
};
u32::from_str(next).ok()
}

1
serde_test/crates-io.md Symbolic link
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@ -0,0 +1 @@
../crates-io.md

223
serde_test/src/assert.rs Normal file
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@ -0,0 +1,223 @@
use serde::{Deserialize, Serialize};
use de::Deserializer;
use ser::Serializer;
use token::Token;
use std::fmt::Debug;
/// Runs both `assert_ser_tokens` and `assert_de_tokens`.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// struct S {
/// a: u8,
/// b: u8,
/// }
///
/// let s = S { a: 0, b: 0 };
/// assert_tokens(&s, &[
/// Token::Struct { name: "S", len: 2 },
/// Token::Str("a"),
/// Token::U8(0),
/// Token::Str("b"),
/// Token::U8(0),
/// Token::StructEnd,
/// ]);
/// ```
#[cfg_attr(track_caller, track_caller)]
pub fn assert_tokens<'de, T>(value: &T, tokens: &'de [Token])
where
T: Serialize + Deserialize<'de> + PartialEq + Debug,
{
assert_ser_tokens(value, tokens);
assert_de_tokens(value, tokens);
}
/// Asserts that `value` serializes to the given `tokens`.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_ser_tokens, Token};
/// #
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// struct S {
/// a: u8,
/// b: u8,
/// }
///
/// let s = S { a: 0, b: 0 };
/// assert_ser_tokens(&s, &[
/// Token::Struct { name: "S", len: 2 },
/// Token::Str("a"),
/// Token::U8(0),
/// Token::Str("b"),
/// Token::U8(0),
/// Token::StructEnd,
/// ]);
/// ```
#[cfg_attr(track_caller, track_caller)]
pub fn assert_ser_tokens<T: ?Sized>(value: &T, tokens: &[Token])
where
T: Serialize,
{
let mut ser = Serializer::new(tokens);
match value.serialize(&mut ser) {
Ok(_) => {}
Err(err) => panic!("value failed to serialize: {}", err),
}
if ser.remaining() > 0 {
panic!("{} remaining tokens", ser.remaining());
}
}
/// Asserts that `value` serializes to the given `tokens`, and then yields
/// `error`.
///
/// ```edition2018
/// use std::sync::{Arc, Mutex};
/// use std::thread;
///
/// use serde::Serialize;
/// use serde_test::{assert_ser_tokens_error, Token};
///
/// #[derive(Serialize)]
/// struct Example {
/// lock: Arc<Mutex<u32>>,
/// }
///
/// fn main() {
/// let example = Example { lock: Arc::new(Mutex::new(0)) };
/// let lock = example.lock.clone();
///
/// let _ = thread::spawn(move || {
/// // This thread will acquire the mutex first, unwrapping the result
/// // of `lock` because the lock has not been poisoned.
/// let _guard = lock.lock().unwrap();
///
/// // This panic while holding the lock (`_guard` is in scope) will
/// // poison the mutex.
/// panic!()
/// }).join();
///
/// let expected = &[
/// Token::Struct { name: "Example", len: 1 },
/// Token::Str("lock"),
/// ];
/// let error = "lock poison error while serializing";
/// assert_ser_tokens_error(&example, expected, error);
/// }
/// ```
#[cfg_attr(track_caller, track_caller)]
pub fn assert_ser_tokens_error<T: ?Sized>(value: &T, tokens: &[Token], error: &str)
where
T: Serialize,
{
let mut ser = Serializer::new(tokens);
match value.serialize(&mut ser) {
Ok(_) => panic!("value serialized successfully"),
Err(e) => assert_eq!(e, *error),
}
if ser.remaining() > 0 {
panic!("{} remaining tokens", ser.remaining());
}
}
/// Asserts that the given `tokens` deserialize into `value`.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_de_tokens, Token};
/// #
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// struct S {
/// a: u8,
/// b: u8,
/// }
///
/// let s = S { a: 0, b: 0 };
/// assert_de_tokens(&s, &[
/// Token::Struct { name: "S", len: 2 },
/// Token::Str("a"),
/// Token::U8(0),
/// Token::Str("b"),
/// Token::U8(0),
/// Token::StructEnd,
/// ]);
/// ```
#[cfg_attr(track_caller, track_caller)]
pub fn assert_de_tokens<'de, T>(value: &T, tokens: &'de [Token])
where
T: Deserialize<'de> + PartialEq + Debug,
{
let mut de = Deserializer::new(tokens);
let mut deserialized_val = match T::deserialize(&mut de) {
Ok(v) => {
assert_eq!(v, *value);
v
}
Err(e) => panic!("tokens failed to deserialize: {}", e),
};
if de.remaining() > 0 {
panic!("{} remaining tokens", de.remaining());
}
// Do the same thing for deserialize_in_place. This isn't *great* because a
// no-op impl of deserialize_in_place can technically succeed here. Still,
// this should catch a lot of junk.
let mut de = Deserializer::new(tokens);
match T::deserialize_in_place(&mut de, &mut deserialized_val) {
Ok(()) => {
assert_eq!(deserialized_val, *value);
}
Err(e) => panic!("tokens failed to deserialize_in_place: {}", e),
}
if de.remaining() > 0 {
panic!("{} remaining tokens", de.remaining());
}
}
/// Asserts that the given `tokens` yield `error` when deserializing.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_de_tokens_error, Token};
/// #
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// #[serde(deny_unknown_fields)]
/// struct S {
/// a: u8,
/// b: u8,
/// }
///
/// assert_de_tokens_error::<S>(
/// &[
/// Token::Struct { name: "S", len: 2 },
/// Token::Str("x"),
/// ],
/// "unknown field `x`, expected `a` or `b`",
/// );
/// ```
#[cfg_attr(track_caller, track_caller)]
pub fn assert_de_tokens_error<'de, T>(tokens: &'de [Token], error: &str)
where
T: Deserialize<'de>,
{
let mut de = Deserializer::new(tokens);
match T::deserialize(&mut de) {
Ok(_) => panic!("tokens deserialized successfully"),
Err(e) => assert_eq!(e, *error),
}
// There may be one token left if a peek caused the error
de.next_token_opt();
if de.remaining() > 0 {
panic!("{} remaining tokens", de.remaining());
}
}

847
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@ -0,0 +1,847 @@
use std::fmt;
use serde::ser::{
SerializeMap, SerializeSeq, SerializeStruct, SerializeStructVariant, SerializeTuple,
SerializeTupleStruct, SerializeTupleVariant,
};
use serde::{Deserialize, Deserializer, Serialize, Serializer};
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct Readable<T: ?Sized>(T);
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct Compact<T: ?Sized>(T);
/// Trait to determine whether a value is represented in human-readable or
/// compact form.
///
/// ```edition2018
/// use serde::{Deserialize, Deserializer, Serialize, Serializer};
/// use serde_test::{assert_tokens, Configure, Token};
///
/// #[derive(Debug, PartialEq)]
/// struct Example(u8, u8);
///
/// impl Serialize for Example {
/// fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
/// where
/// S: Serializer,
/// {
/// if serializer.is_human_readable() {
/// format!("{}.{}", self.0, self.1).serialize(serializer)
/// } else {
/// (self.0, self.1).serialize(serializer)
/// }
/// }
/// }
///
/// impl<'de> Deserialize<'de> for Example {
/// fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
/// where
/// D: Deserializer<'de>,
/// {
/// use serde::de::Error;
/// if deserializer.is_human_readable() {
/// let s = String::deserialize(deserializer)?;
/// let parts: Vec<_> = s.split('.').collect();
/// Ok(Example(
/// parts[0].parse().map_err(D::Error::custom)?,
/// parts[1].parse().map_err(D::Error::custom)?,
/// ))
/// } else {
/// let (x, y) = Deserialize::deserialize(deserializer)?;
/// Ok(Example(x, y))
/// }
/// }
/// }
///
/// fn main() {
/// assert_tokens(
/// &Example(1, 0).compact(),
/// &[
/// Token::Tuple { len: 2 },
/// Token::U8(1),
/// Token::U8(0),
/// Token::TupleEnd,
/// ],
/// );
/// assert_tokens(&Example(1, 0).readable(), &[Token::Str("1.0")]);
/// }
/// ```
pub trait Configure {
/// Marks `self` as using `is_human_readable == true`
fn readable(self) -> Readable<Self>
where
Self: Sized,
{
Readable(self)
}
/// Marks `self` as using `is_human_readable == false`
fn compact(self) -> Compact<Self>
where
Self: Sized,
{
Compact(self)
}
}
impl<T: ?Sized> Configure for T {}
impl<T: ?Sized> Serialize for Readable<T>
where
T: Serialize,
{
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
self.0.serialize(Readable(serializer))
}
}
impl<T: ?Sized> Serialize for Compact<T>
where
T: Serialize,
{
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
self.0.serialize(Compact(serializer))
}
}
impl<'de, T> Deserialize<'de> for Readable<T>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(Readable(deserializer)).map(Readable)
}
}
impl<'de, T> Deserialize<'de> for Compact<T>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(Compact(deserializer)).map(Compact)
}
}
impl<'de, T> DeserializeSeed<'de> for Readable<T>
where
T: DeserializeSeed<'de>,
{
type Value = T::Value;
fn deserialize<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
where
D: Deserializer<'de>,
{
self.0.deserialize(Readable(deserializer))
}
}
impl<'de, T> DeserializeSeed<'de> for Compact<T>
where
T: DeserializeSeed<'de>,
{
type Value = T::Value;
fn deserialize<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
where
D: Deserializer<'de>,
{
self.0.deserialize(Compact(deserializer))
}
}
macro_rules! forward_method {
($name: ident (self $(, $arg: ident : $arg_type: ty)* ) -> $return_type: ty) => {
fn $name (self $(, $arg : $arg_type)* ) -> $return_type {
(self.0).$name( $($arg),* )
}
};
}
macro_rules! forward_serialize_methods {
( $( $name: ident $arg_type: ty ),* ) => {
$(
forward_method!($name(self, v : $arg_type) -> Result<Self::Ok, Self::Error>);
)*
};
}
macro_rules! impl_serializer {
($wrapper:ident, $is_human_readable:expr) => {
impl<S> Serializer for $wrapper<S>
where
S: Serializer,
{
type Ok = S::Ok;
type Error = S::Error;
type SerializeSeq = $wrapper<S::SerializeSeq>;
type SerializeTuple = $wrapper<S::SerializeTuple>;
type SerializeTupleStruct = $wrapper<S::SerializeTupleStruct>;
type SerializeTupleVariant = $wrapper<S::SerializeTupleVariant>;
type SerializeMap = $wrapper<S::SerializeMap>;
type SerializeStruct = $wrapper<S::SerializeStruct>;
type SerializeStructVariant = $wrapper<S::SerializeStructVariant>;
fn is_human_readable(&self) -> bool {
$is_human_readable
}
forward_serialize_methods! {
serialize_bool bool,
serialize_i8 i8,
serialize_i16 i16,
serialize_i32 i32,
serialize_i64 i64,
serialize_u8 u8,
serialize_u16 u16,
serialize_u32 u32,
serialize_u64 u64,
serialize_f32 f32,
serialize_f64 f64,
serialize_char char,
serialize_str &str,
serialize_bytes &[u8],
serialize_unit_struct &'static str
}
fn serialize_unit(self) -> Result<S::Ok, S::Error> {
self.0.serialize_unit()
}
fn serialize_unit_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
) -> Result<S::Ok, S::Error> {
self.0.serialize_unit_variant(name, variant_index, variant)
}
fn serialize_newtype_struct<T: ?Sized>(
self,
name: &'static str,
value: &T,
) -> Result<S::Ok, S::Error>
where
T: Serialize,
{
self.0.serialize_newtype_struct(name, &$wrapper(value))
}
fn serialize_newtype_variant<T: ?Sized>(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
value: &T,
) -> Result<S::Ok, S::Error>
where
T: Serialize,
{
self.0
.serialize_newtype_variant(name, variant_index, variant, &$wrapper(value))
}
fn serialize_none(self) -> Result<S::Ok, Self::Error> {
self.0.serialize_none()
}
fn serialize_some<T: ?Sized>(self, value: &T) -> Result<S::Ok, Self::Error>
where
T: Serialize,
{
self.0.serialize_some(&$wrapper(value))
}
fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
self.0.serialize_seq(len).map($wrapper)
}
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
self.0.serialize_tuple(len).map($wrapper)
}
fn serialize_tuple_struct(
self,
name: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.0.serialize_tuple_struct(name, len).map($wrapper)
}
fn serialize_tuple_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
self.0
.serialize_tuple_variant(name, variant_index, variant, len)
.map($wrapper)
}
fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
self.0.serialize_map(len).map($wrapper)
}
fn serialize_struct(
self,
name: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.0.serialize_struct(name, len).map($wrapper)
}
fn serialize_struct_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
self.0
.serialize_struct_variant(name, variant_index, variant, len)
.map($wrapper)
}
}
impl<S> SerializeSeq for $wrapper<S>
where
S: SerializeSeq,
{
type Ok = S::Ok;
type Error = S::Error;
fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
where
T: Serialize,
{
self.0.serialize_element(&$wrapper(value))
}
fn end(self) -> Result<S::Ok, S::Error> {
self.0.end()
}
}
impl<S> SerializeTuple for $wrapper<S>
where
S: SerializeTuple,
{
type Ok = S::Ok;
type Error = S::Error;
fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
where
T: Serialize,
{
self.0.serialize_element(&$wrapper(value))
}
fn end(self) -> Result<S::Ok, S::Error> {
self.0.end()
}
}
impl<S> SerializeTupleStruct for $wrapper<S>
where
S: SerializeTupleStruct,
{
type Ok = S::Ok;
type Error = S::Error;
fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
where
T: Serialize,
{
self.0.serialize_field(&$wrapper(value))
}
fn end(self) -> Result<S::Ok, S::Error> {
self.0.end()
}
}
impl<S> SerializeTupleVariant for $wrapper<S>
where
S: SerializeTupleVariant,
{
type Ok = S::Ok;
type Error = S::Error;
fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
where
T: Serialize,
{
self.0.serialize_field(&$wrapper(value))
}
fn end(self) -> Result<S::Ok, S::Error> {
self.0.end()
}
}
impl<S> SerializeMap for $wrapper<S>
where
S: SerializeMap,
{
type Ok = S::Ok;
type Error = S::Error;
fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), S::Error>
where
T: Serialize,
{
self.0.serialize_key(&$wrapper(key))
}
fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), S::Error>
where
T: Serialize,
{
self.0.serialize_value(&$wrapper(value))
}
fn serialize_entry<K: ?Sized, V: ?Sized>(
&mut self,
key: &K,
value: &V,
) -> Result<(), S::Error>
where
K: Serialize,
V: Serialize,
{
self.0.serialize_entry(key, &$wrapper(value))
}
fn end(self) -> Result<S::Ok, S::Error> {
self.0.end()
}
}
impl<S> SerializeStruct for $wrapper<S>
where
S: SerializeStruct,
{
type Ok = S::Ok;
type Error = S::Error;
fn serialize_field<T: ?Sized>(
&mut self,
name: &'static str,
field: &T,
) -> Result<(), S::Error>
where
T: Serialize,
{
self.0.serialize_field(name, &$wrapper(field))
}
fn end(self) -> Result<S::Ok, S::Error> {
self.0.end()
}
}
impl<S> SerializeStructVariant for $wrapper<S>
where
S: SerializeStructVariant,
{
type Ok = S::Ok;
type Error = S::Error;
fn serialize_field<T: ?Sized>(
&mut self,
name: &'static str,
field: &T,
) -> Result<(), S::Error>
where
T: Serialize,
{
self.0.serialize_field(name, &$wrapper(field))
}
fn end(self) -> Result<S::Ok, S::Error> {
self.0.end()
}
}
};
}
impl_serializer!(Readable, true);
impl_serializer!(Compact, false);
use serde::de::{DeserializeSeed, EnumAccess, Error, MapAccess, SeqAccess, VariantAccess, Visitor};
macro_rules! forward_deserialize_methods {
( $wrapper : ident ( $( $name: ident ),* ) ) => {
$(
fn $name<V>(self, visitor: V) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
(self.0).$name($wrapper(visitor))
}
)*
};
}
macro_rules! impl_deserializer {
($wrapper:ident, $is_human_readable:expr) => {
impl<'de, D> Deserializer<'de> for $wrapper<D>
where
D: Deserializer<'de>,
{
type Error = D::Error;
forward_deserialize_methods! {
$wrapper (
deserialize_any,
deserialize_bool,
deserialize_u8,
deserialize_u16,
deserialize_u32,
deserialize_u64,
deserialize_i8,
deserialize_i16,
deserialize_i32,
deserialize_i64,
deserialize_f32,
deserialize_f64,
deserialize_char,
deserialize_str,
deserialize_string,
deserialize_bytes,
deserialize_byte_buf,
deserialize_option,
deserialize_unit,
deserialize_seq,
deserialize_map,
deserialize_identifier,
deserialize_ignored_any
)
}
fn deserialize_unit_struct<V>(
self,
name: &'static str,
visitor: V,
) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
self.0.deserialize_unit_struct(name, $wrapper(visitor))
}
fn deserialize_newtype_struct<V>(
self,
name: &'static str,
visitor: V,
) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
self.0.deserialize_newtype_struct(name, $wrapper(visitor))
}
fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
self.0.deserialize_tuple(len, $wrapper(visitor))
}
fn deserialize_tuple_struct<V>(
self,
name: &'static str,
len: usize,
visitor: V,
) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
self.0
.deserialize_tuple_struct(name, len, $wrapper(visitor))
}
fn deserialize_struct<V>(
self,
name: &'static str,
fields: &'static [&'static str],
visitor: V,
) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
self.0.deserialize_struct(name, fields, $wrapper(visitor))
}
fn deserialize_enum<V>(
self,
name: &'static str,
variants: &'static [&'static str],
visitor: V,
) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
self.0.deserialize_enum(name, variants, $wrapper(visitor))
}
fn is_human_readable(&self) -> bool {
$is_human_readable
}
}
impl<'de, D> Visitor<'de> for $wrapper<D>
where
D: Visitor<'de>,
{
type Value = D::Value;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
self.0.expecting(formatter)
}
fn visit_bool<E>(self, v: bool) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_bool(v)
}
fn visit_i8<E>(self, v: i8) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_i8(v)
}
fn visit_i16<E>(self, v: i16) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_i16(v)
}
fn visit_i32<E>(self, v: i32) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_i32(v)
}
fn visit_i64<E>(self, v: i64) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_i64(v)
}
fn visit_u8<E>(self, v: u8) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_u8(v)
}
fn visit_u16<E>(self, v: u16) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_u16(v)
}
fn visit_u32<E>(self, v: u32) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_u32(v)
}
fn visit_u64<E>(self, v: u64) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_u64(v)
}
fn visit_f32<E>(self, v: f32) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_f32(v)
}
fn visit_f64<E>(self, v: f64) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_f64(v)
}
fn visit_char<E>(self, v: char) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_char(v)
}
fn visit_str<E>(self, v: &str) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_str(v)
}
fn visit_borrowed_str<E>(self, v: &'de str) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_borrowed_str(v)
}
fn visit_string<E>(self, v: String) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_string(v)
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_bytes(v)
}
fn visit_borrowed_bytes<E>(self, v: &'de [u8]) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_borrowed_bytes(v)
}
fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_byte_buf(v)
}
fn visit_none<E>(self) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_none()
}
fn visit_some<D2>(self, deserializer: D2) -> Result<Self::Value, D2::Error>
where
D2: Deserializer<'de>,
{
self.0.visit_some($wrapper(deserializer))
}
fn visit_unit<E>(self) -> Result<D::Value, E>
where
E: Error,
{
self.0.visit_unit()
}
fn visit_newtype_struct<D2>(self, deserializer: D2) -> Result<Self::Value, D2::Error>
where
D2: Deserializer<'de>,
{
self.0.visit_newtype_struct($wrapper(deserializer))
}
fn visit_seq<V>(self, seq: V) -> Result<D::Value, V::Error>
where
V: SeqAccess<'de>,
{
self.0.visit_seq($wrapper(seq))
}
fn visit_map<V>(self, map: V) -> Result<D::Value, V::Error>
where
V: MapAccess<'de>,
{
self.0.visit_map($wrapper(map))
}
fn visit_enum<V>(self, data: V) -> Result<D::Value, V::Error>
where
V: EnumAccess<'de>,
{
self.0.visit_enum($wrapper(data))
}
}
impl<'de, D> SeqAccess<'de> for $wrapper<D>
where
D: SeqAccess<'de>,
{
type Error = D::Error;
fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, D::Error>
where
T: DeserializeSeed<'de>,
{
self.0.next_element_seed($wrapper(seed))
}
fn size_hint(&self) -> Option<usize> {
self.0.size_hint()
}
}
impl<'de, D> MapAccess<'de> for $wrapper<D>
where
D: MapAccess<'de>,
{
type Error = D::Error;
fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, D::Error>
where
K: DeserializeSeed<'de>,
{
self.0.next_key_seed($wrapper(seed))
}
fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, D::Error>
where
V: DeserializeSeed<'de>,
{
self.0.next_value_seed($wrapper(seed))
}
fn next_entry_seed<K, V>(
&mut self,
kseed: K,
vseed: V,
) -> Result<Option<(K::Value, V::Value)>, D::Error>
where
K: DeserializeSeed<'de>,
V: DeserializeSeed<'de>,
{
self.0.next_entry_seed($wrapper(kseed), $wrapper(vseed))
}
fn size_hint(&self) -> Option<usize> {
self.0.size_hint()
}
}
impl<'de, D> EnumAccess<'de> for $wrapper<D>
where
D: EnumAccess<'de>,
{
type Error = D::Error;
type Variant = $wrapper<D::Variant>;
fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self::Variant), Self::Error>
where
V: DeserializeSeed<'de>,
{
self.0
.variant_seed($wrapper(seed))
.map(|(value, variant)| (value, $wrapper(variant)))
}
}
impl<'de, D> VariantAccess<'de> for $wrapper<D>
where
D: VariantAccess<'de>,
{
type Error = D::Error;
fn unit_variant(self) -> Result<(), D::Error> {
self.0.unit_variant()
}
fn newtype_variant_seed<T>(self, seed: T) -> Result<T::Value, D::Error>
where
T: DeserializeSeed<'de>,
{
self.0.newtype_variant_seed($wrapper(seed))
}
fn tuple_variant<V>(self, len: usize, visitor: V) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
self.0.tuple_variant(len, $wrapper(visitor))
}
fn struct_variant<V>(
self,
fields: &'static [&'static str],
visitor: V,
) -> Result<V::Value, D::Error>
where
V: Visitor<'de>,
{
self.0.struct_variant(fields, $wrapper(visitor))
}
}
};
}
impl_deserializer!(Readable, true);
impl_deserializer!(Compact, false);

683
serde_test/src/de.rs Normal file
View File

@ -0,0 +1,683 @@
use serde::de::value::{MapAccessDeserializer, SeqAccessDeserializer};
use serde::de::{
self, Deserialize, DeserializeSeed, EnumAccess, IntoDeserializer, MapAccess, SeqAccess,
VariantAccess, Visitor,
};
use error::Error;
use token::Token;
#[derive(Debug)]
pub struct Deserializer<'de> {
tokens: &'de [Token],
}
macro_rules! assert_next_token {
($de:expr, $expected:expr) => {
match $de.next_token_opt() {
Some(token) if token == $expected => {}
Some(other) => panic!(
"expected Token::{} but deserialization wants Token::{}",
other, $expected
),
None => panic!(
"end of tokens but deserialization wants Token::{}",
$expected
),
}
};
}
macro_rules! unexpected {
($token:expr) => {
panic!("deserialization did not expect this token: {}", $token)
};
}
macro_rules! end_of_tokens {
() => {
panic!("ran out of tokens to deserialize")
};
}
impl<'de> Deserializer<'de> {
pub fn new(tokens: &'de [Token]) -> Self {
Deserializer { tokens: tokens }
}
fn peek_token_opt(&self) -> Option<Token> {
self.tokens.first().cloned()
}
fn peek_token(&self) -> Token {
match self.peek_token_opt() {
Some(token) => token,
None => end_of_tokens!(),
}
}
pub fn next_token_opt(&mut self) -> Option<Token> {
match self.tokens.split_first() {
Some((&first, rest)) => {
self.tokens = rest;
Some(first)
}
None => None,
}
}
fn next_token(&mut self) -> Token {
match self.tokens.split_first() {
Some((&first, rest)) => {
self.tokens = rest;
first
}
None => end_of_tokens!(),
}
}
pub fn remaining(&self) -> usize {
self.tokens.len()
}
fn visit_seq<V>(
&mut self,
len: Option<usize>,
end: Token,
visitor: V,
) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
let value = visitor.visit_seq(DeserializerSeqVisitor {
de: self,
len: len,
end: end,
})?;
assert_next_token!(self, end);
Ok(value)
}
fn visit_map<V>(
&mut self,
len: Option<usize>,
end: Token,
visitor: V,
) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
let value = visitor.visit_map(DeserializerMapVisitor {
de: self,
len: len,
end: end,
})?;
assert_next_token!(self, end);
Ok(value)
}
}
impl<'de, 'a> de::Deserializer<'de> for &'a mut Deserializer<'de> {
type Error = Error;
forward_to_deserialize_any! {
bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
bytes byte_buf unit seq map identifier ignored_any
}
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
let token = self.next_token();
match token {
Token::Bool(v) => visitor.visit_bool(v),
Token::I8(v) => visitor.visit_i8(v),
Token::I16(v) => visitor.visit_i16(v),
Token::I32(v) => visitor.visit_i32(v),
Token::I64(v) => visitor.visit_i64(v),
Token::U8(v) => visitor.visit_u8(v),
Token::U16(v) => visitor.visit_u16(v),
Token::U32(v) => visitor.visit_u32(v),
Token::U64(v) => visitor.visit_u64(v),
Token::F32(v) => visitor.visit_f32(v),
Token::F64(v) => visitor.visit_f64(v),
Token::Char(v) => visitor.visit_char(v),
Token::Str(v) => visitor.visit_str(v),
Token::BorrowedStr(v) => visitor.visit_borrowed_str(v),
Token::String(v) => visitor.visit_string(v.to_owned()),
Token::Bytes(v) => visitor.visit_bytes(v),
Token::BorrowedBytes(v) => visitor.visit_borrowed_bytes(v),
Token::ByteBuf(v) => visitor.visit_byte_buf(v.to_vec()),
Token::None => visitor.visit_none(),
Token::Some => visitor.visit_some(self),
Token::Unit | Token::UnitStruct { .. } => visitor.visit_unit(),
Token::NewtypeStruct { .. } => visitor.visit_newtype_struct(self),
Token::Seq { len } => self.visit_seq(len, Token::SeqEnd, visitor),
Token::Tuple { len } => self.visit_seq(Some(len), Token::TupleEnd, visitor),
Token::TupleStruct { len, .. } => {
self.visit_seq(Some(len), Token::TupleStructEnd, visitor)
}
Token::Map { len } => self.visit_map(len, Token::MapEnd, visitor),
Token::Struct { len, .. } => self.visit_map(Some(len), Token::StructEnd, visitor),
Token::Enum { .. } => {
let variant = self.next_token();
let next = self.peek_token();
match (variant, next) {
(Token::Str(variant), Token::Unit) => {
self.next_token();
visitor.visit_str(variant)
}
(Token::BorrowedStr(variant), Token::Unit) => {
self.next_token();
visitor.visit_borrowed_str(variant)
}
(Token::String(variant), Token::Unit) => {
self.next_token();
visitor.visit_string(variant.to_string())
}
(Token::Bytes(variant), Token::Unit) => {
self.next_token();
visitor.visit_bytes(variant)
}
(Token::BorrowedBytes(variant), Token::Unit) => {
self.next_token();
visitor.visit_borrowed_bytes(variant)
}
(Token::ByteBuf(variant), Token::Unit) => {
self.next_token();
visitor.visit_byte_buf(variant.to_vec())
}
(Token::U8(variant), Token::Unit) => {
self.next_token();
visitor.visit_u8(variant)
}
(Token::U16(variant), Token::Unit) => {
self.next_token();
visitor.visit_u16(variant)
}
(Token::U32(variant), Token::Unit) => {
self.next_token();
visitor.visit_u32(variant)
}
(Token::U64(variant), Token::Unit) => {
self.next_token();
visitor.visit_u64(variant)
}
(variant, Token::Unit) => unexpected!(variant),
(variant, _) => {
visitor.visit_map(EnumMapVisitor::new(self, variant, EnumFormat::Any))
}
}
}
Token::UnitVariant { variant, .. } => visitor.visit_str(variant),
Token::NewtypeVariant { variant, .. } => visitor.visit_map(EnumMapVisitor::new(
self,
Token::Str(variant),
EnumFormat::Any,
)),
Token::TupleVariant { variant, .. } => visitor.visit_map(EnumMapVisitor::new(
self,
Token::Str(variant),
EnumFormat::Seq,
)),
Token::StructVariant { variant, .. } => visitor.visit_map(EnumMapVisitor::new(
self,
Token::Str(variant),
EnumFormat::Map,
)),
Token::SeqEnd
| Token::TupleEnd
| Token::TupleStructEnd
| Token::MapEnd
| Token::StructEnd
| Token::TupleVariantEnd
| Token::StructVariantEnd => {
unexpected!(token);
}
}
}
fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.peek_token() {
Token::Unit | Token::None => {
self.next_token();
visitor.visit_none()
}
Token::Some => {
self.next_token();
visitor.visit_some(self)
}
_ => self.deserialize_any(visitor),
}
}
fn deserialize_enum<V>(
self,
name: &'static str,
_variants: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.peek_token() {
Token::Enum { name: n } if name == n => {
self.next_token();
visitor.visit_enum(DeserializerEnumVisitor { de: self })
}
Token::UnitVariant { name: n, .. }
| Token::NewtypeVariant { name: n, .. }
| Token::TupleVariant { name: n, .. }
| Token::StructVariant { name: n, .. }
if name == n =>
{
visitor.visit_enum(DeserializerEnumVisitor { de: self })
}
_ => self.deserialize_any(visitor),
}
}
fn deserialize_unit_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.peek_token() {
Token::UnitStruct { .. } => {
assert_next_token!(self, Token::UnitStruct { name: name });
visitor.visit_unit()
}
_ => self.deserialize_any(visitor),
}
}
fn deserialize_newtype_struct<V>(
self,
name: &'static str,
visitor: V,
) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.peek_token() {
Token::NewtypeStruct { .. } => {
assert_next_token!(self, Token::NewtypeStruct { name: name });
visitor.visit_newtype_struct(self)
}
_ => self.deserialize_any(visitor),
}
}
fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.peek_token() {
Token::Unit | Token::UnitStruct { .. } => {
self.next_token();
visitor.visit_unit()
}
Token::Seq { .. } => {
self.next_token();
self.visit_seq(Some(len), Token::SeqEnd, visitor)
}
Token::Tuple { .. } => {
self.next_token();
self.visit_seq(Some(len), Token::TupleEnd, visitor)
}
Token::TupleStruct { .. } => {
self.next_token();
self.visit_seq(Some(len), Token::TupleStructEnd, visitor)
}
_ => self.deserialize_any(visitor),
}
}
fn deserialize_tuple_struct<V>(
self,
name: &'static str,
len: usize,
visitor: V,
) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.peek_token() {
Token::Unit => {
self.next_token();
visitor.visit_unit()
}
Token::UnitStruct { .. } => {
assert_next_token!(self, Token::UnitStruct { name: name });
visitor.visit_unit()
}
Token::Seq { .. } => {
self.next_token();
self.visit_seq(Some(len), Token::SeqEnd, visitor)
}
Token::Tuple { .. } => {
self.next_token();
self.visit_seq(Some(len), Token::TupleEnd, visitor)
}
Token::TupleStruct { len: n, .. } => {
assert_next_token!(self, Token::TupleStruct { name: name, len: n });
self.visit_seq(Some(len), Token::TupleStructEnd, visitor)
}
_ => self.deserialize_any(visitor),
}
}
fn deserialize_struct<V>(
self,
name: &'static str,
fields: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.peek_token() {
Token::Struct { len: n, .. } => {
assert_next_token!(self, Token::Struct { name: name, len: n });
self.visit_map(Some(fields.len()), Token::StructEnd, visitor)
}
Token::Map { .. } => {
self.next_token();
self.visit_map(Some(fields.len()), Token::MapEnd, visitor)
}
_ => self.deserialize_any(visitor),
}
}
fn is_human_readable(&self) -> bool {
panic!(
"Types which have different human-readable and compact representations \
must explicitly mark their test cases with `serde_test::Configure`"
);
}
}
//////////////////////////////////////////////////////////////////////////
struct DeserializerSeqVisitor<'a, 'de: 'a> {
de: &'a mut Deserializer<'de>,
len: Option<usize>,
end: Token,
}
impl<'de, 'a> SeqAccess<'de> for DeserializerSeqVisitor<'a, 'de> {
type Error = Error;
fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, Error>
where
T: DeserializeSeed<'de>,
{
if self.de.peek_token_opt() == Some(self.end) {
return Ok(None);
}
self.len = self.len.map(|len| len.saturating_sub(1));
seed.deserialize(&mut *self.de).map(Some)
}
fn size_hint(&self) -> Option<usize> {
self.len
}
}
//////////////////////////////////////////////////////////////////////////
struct DeserializerMapVisitor<'a, 'de: 'a> {
de: &'a mut Deserializer<'de>,
len: Option<usize>,
end: Token,
}
impl<'de, 'a> MapAccess<'de> for DeserializerMapVisitor<'a, 'de> {
type Error = Error;
fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Error>
where
K: DeserializeSeed<'de>,
{
if self.de.peek_token_opt() == Some(self.end) {
return Ok(None);
}
self.len = self.len.map(|len| len.saturating_sub(1));
seed.deserialize(&mut *self.de).map(Some)
}
fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Error>
where
V: DeserializeSeed<'de>,
{
seed.deserialize(&mut *self.de)
}
fn size_hint(&self) -> Option<usize> {
self.len
}
}
//////////////////////////////////////////////////////////////////////////
struct DeserializerEnumVisitor<'a, 'de: 'a> {
de: &'a mut Deserializer<'de>,
}
impl<'de, 'a> EnumAccess<'de> for DeserializerEnumVisitor<'a, 'de> {
type Error = Error;
type Variant = Self;
fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self), Error>
where
V: DeserializeSeed<'de>,
{
match self.de.peek_token() {
Token::UnitVariant { variant: v, .. }
| Token::NewtypeVariant { variant: v, .. }
| Token::TupleVariant { variant: v, .. }
| Token::StructVariant { variant: v, .. } => {
let de = v.into_deserializer();
let value = seed.deserialize(de)?;
Ok((value, self))
}
_ => {
let value = seed.deserialize(&mut *self.de)?;
Ok((value, self))
}
}
}
}
impl<'de, 'a> VariantAccess<'de> for DeserializerEnumVisitor<'a, 'de> {
type Error = Error;
fn unit_variant(self) -> Result<(), Error> {
match self.de.peek_token() {
Token::UnitVariant { .. } => {
self.de.next_token();
Ok(())
}
_ => Deserialize::deserialize(self.de),
}
}
fn newtype_variant_seed<T>(self, seed: T) -> Result<T::Value, Self::Error>
where
T: DeserializeSeed<'de>,
{
match self.de.peek_token() {
Token::NewtypeVariant { .. } => {
self.de.next_token();
seed.deserialize(self.de)
}
_ => seed.deserialize(self.de),
}
}
fn tuple_variant<V>(self, len: usize, visitor: V) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.de.peek_token() {
Token::TupleVariant { len: enum_len, .. } => {
let token = self.de.next_token();
if len == enum_len {
self.de
.visit_seq(Some(len), Token::TupleVariantEnd, visitor)
} else {
unexpected!(token);
}
}
Token::Seq {
len: Some(enum_len),
} => {
let token = self.de.next_token();
if len == enum_len {
self.de.visit_seq(Some(len), Token::SeqEnd, visitor)
} else {
unexpected!(token);
}
}
_ => de::Deserializer::deserialize_any(self.de, visitor),
}
}
fn struct_variant<V>(
self,
fields: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Error>
where
V: Visitor<'de>,
{
match self.de.peek_token() {
Token::StructVariant { len: enum_len, .. } => {
let token = self.de.next_token();
if fields.len() == enum_len {
self.de
.visit_map(Some(fields.len()), Token::StructVariantEnd, visitor)
} else {
unexpected!(token);
}
}
Token::Map {
len: Some(enum_len),
} => {
let token = self.de.next_token();
if fields.len() == enum_len {
self.de
.visit_map(Some(fields.len()), Token::MapEnd, visitor)
} else {
unexpected!(token);
}
}
_ => de::Deserializer::deserialize_any(self.de, visitor),
}
}
}
//////////////////////////////////////////////////////////////////////////
struct EnumMapVisitor<'a, 'de: 'a> {
de: &'a mut Deserializer<'de>,
variant: Option<Token>,
format: EnumFormat,
}
enum EnumFormat {
Seq,
Map,
Any,
}
impl<'a, 'de> EnumMapVisitor<'a, 'de> {
fn new(de: &'a mut Deserializer<'de>, variant: Token, format: EnumFormat) -> Self {
EnumMapVisitor {
de: de,
variant: Some(variant),
format: format,
}
}
}
impl<'de, 'a> MapAccess<'de> for EnumMapVisitor<'a, 'de> {
type Error = Error;
fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Error>
where
K: DeserializeSeed<'de>,
{
match self.variant.take() {
Some(Token::Str(variant)) => seed.deserialize(variant.into_deserializer()).map(Some),
Some(Token::Bytes(variant)) => seed
.deserialize(BytesDeserializer { value: variant })
.map(Some),
Some(Token::U32(variant)) => seed.deserialize(variant.into_deserializer()).map(Some),
Some(other) => unexpected!(other),
None => Ok(None),
}
}
fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Error>
where
V: DeserializeSeed<'de>,
{
match self.format {
EnumFormat::Seq => {
let value = {
let visitor = DeserializerSeqVisitor {
de: self.de,
len: None,
end: Token::TupleVariantEnd,
};
seed.deserialize(SeqAccessDeserializer::new(visitor))?
};
assert_next_token!(self.de, Token::TupleVariantEnd);
Ok(value)
}
EnumFormat::Map => {
let value = {
let visitor = DeserializerMapVisitor {
de: self.de,
len: None,
end: Token::StructVariantEnd,
};
seed.deserialize(MapAccessDeserializer::new(visitor))?
};
assert_next_token!(self.de, Token::StructVariantEnd);
Ok(value)
}
EnumFormat::Any => seed.deserialize(&mut *self.de),
}
}
}
struct BytesDeserializer {
value: &'static [u8],
}
impl<'de> de::Deserializer<'de> for BytesDeserializer {
type Error = Error;
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: de::Visitor<'de>,
{
visitor.visit_bytes(self.value)
}
forward_to_deserialize_any! {
bool i8 i16 i32 i64 i128 u8 u16 u32 u64 u128 f32 f64 char str string
bytes byte_buf option unit unit_struct newtype_struct seq tuple
tuple_struct map struct enum identifier ignored_any
}
}

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use std::error;
use std::fmt::{self, Display};
use serde::{de, ser};
#[derive(Clone, Debug)]
pub struct Error {
msg: String,
}
impl ser::Error for Error {
fn custom<T: Display>(msg: T) -> Self {
Error {
msg: msg.to_string(),
}
}
}
impl de::Error for Error {
fn custom<T: Display>(msg: T) -> Self {
Error {
msg: msg.to_string(),
}
}
}
impl fmt::Display for Error {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str(&self.msg)
}
}
impl error::Error for Error {
fn description(&self) -> &str {
&self.msg
}
}
impl PartialEq<str> for Error {
fn eq(&self, other: &str) -> bool {
self.msg == other
}
}

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//! This crate provides a convenient concise way to write unit tests for
//! implementations of [`Serialize`] and [`Deserialize`].
//!
//! [`Serialize`]: https://docs.serde.rs/serde/ser/trait.Serialize.html
//! [`Deserialize`]: https://docs.serde.rs/serde/de/trait.Deserialize.html
//!
//! The `Serialize` impl for a value can be characterized by the sequence of
//! [`Serializer`] calls that are made in the course of serializing the value,
//! so `serde_test` provides a [`Token`] abstraction which corresponds roughly
//! to `Serializer` method calls. There is an [`assert_ser_tokens`] function to
//! test that a value serializes to a particular sequence of method calls, an
//! [`assert_de_tokens`] function to test that a value can be deserialized from
//! a particular sequence of method calls, and an [`assert_tokens`] function to
//! test both directions. There are also functions to test expected failure
//! conditions.
//!
//! [`Serializer`]: https://docs.serde.rs/serde/ser/trait.Serializer.html
//! [`Token`]: https://docs.serde.rs/serde_test/enum.Token.html
//! [`assert_ser_tokens`]: https://docs.serde.rs/serde_test/fn.assert_ser_tokens.html
//! [`assert_de_tokens`]: https://docs.serde.rs/serde_test/fn.assert_de_tokens.html
//! [`assert_tokens`]: https://docs.serde.rs/serde_test/fn.assert_tokens.html
//!
//! Here is an example from the [`linked-hash-map`] crate.
//!
//! [`linked-hash-map`]: https://github.com/contain-rs/linked-hash-map
//!
//! ```edition2018
//! # const IGNORE: &str = stringify! {
//! use linked_hash_map::LinkedHashMap;
//! # };
//! use serde_test::{Token, assert_tokens};
//!
//! # use std::fmt;
//! # use std::marker::PhantomData;
//! #
//! # use serde::ser::{Serialize, Serializer, SerializeMap};
//! # use serde::de::{Deserialize, Deserializer, Visitor, MapAccess};
//! #
//! # // Dumb imitation of LinkedHashMap.
//! # #[derive(PartialEq, Debug)]
//! # struct LinkedHashMap<K, V>(Vec<(K, V)>);
//! #
//! # impl<K, V> LinkedHashMap<K, V> {
//! # fn new() -> Self {
//! # LinkedHashMap(Vec::new())
//! # }
//! #
//! # fn insert(&mut self, k: K, v: V) {
//! # self.0.push((k, v));
//! # }
//! # }
//! #
//! # impl<K, V> Serialize for LinkedHashMap<K, V>
//! # where
//! # K: Serialize,
//! # V: Serialize,
//! # {
//! # fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
//! # where
//! # S: Serializer,
//! # {
//! # let mut map = serializer.serialize_map(Some(self.0.len()))?;
//! # for &(ref k, ref v) in &self.0 {
//! # map.serialize_entry(k, v)?;
//! # }
//! # map.end()
//! # }
//! # }
//! #
//! # struct LinkedHashMapVisitor<K, V>(PhantomData<(K, V)>);
//! #
//! # impl<'de, K, V> Visitor<'de> for LinkedHashMapVisitor<K, V>
//! # where
//! # K: Deserialize<'de>,
//! # V: Deserialize<'de>,
//! # {
//! # type Value = LinkedHashMap<K, V>;
//! #
//! # fn expecting(&self, _: &mut fmt::Formatter) -> fmt::Result {
//! # unimplemented!()
//! # }
//! #
//! # fn visit_map<M>(self, mut access: M) -> Result<Self::Value, M::Error>
//! # where
//! # M: MapAccess<'de>,
//! # {
//! # let mut map = LinkedHashMap::new();
//! # while let Some((key, value)) = access.next_entry()? {
//! # map.insert(key, value);
//! # }
//! # Ok(map)
//! # }
//! # }
//! #
//! # impl<'de, K, V> Deserialize<'de> for LinkedHashMap<K, V>
//! # where
//! # K: Deserialize<'de>,
//! # V: Deserialize<'de>,
//! # {
//! # fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
//! # where
//! # D: Deserializer<'de>,
//! # {
//! # deserializer.deserialize_map(LinkedHashMapVisitor(PhantomData))
//! # }
//! # }
//! #
//! #[test]
//! # fn not_a_test_ser_de_empty() {}
//! fn test_ser_de_empty() {
//! let map = LinkedHashMap::<char, u32>::new();
//!
//! assert_tokens(&map, &[
//! Token::Map { len: Some(0) },
//! Token::MapEnd,
//! ]);
//! }
//!
//! #[test]
//! # fn not_a_test_ser_de() {}
//! fn test_ser_de() {
//! let mut map = LinkedHashMap::new();
//! map.insert('b', 20);
//! map.insert('a', 10);
//! map.insert('c', 30);
//!
//! assert_tokens(&map, &[
//! Token::Map { len: Some(3) },
//! Token::Char('b'),
//! Token::I32(20),
//!
//! Token::Char('a'),
//! Token::I32(10),
//!
//! Token::Char('c'),
//! Token::I32(30),
//! Token::MapEnd,
//! ]);
//! }
//! #
//! # fn main() {
//! # test_ser_de_empty();
//! # test_ser_de();
//! # }
//! ```
#![doc(html_root_url = "https://docs.rs/serde_test/1.0.136")]
#![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
// Ignored clippy lints
#![cfg_attr(feature = "cargo-clippy", allow(float_cmp, needless_doctest_main))]
// Ignored clippy_pedantic lints
#![cfg_attr(
feature = "cargo-clippy",
allow(
cloned_instead_of_copied,
empty_line_after_outer_attr,
manual_assert,
missing_docs_in_private_items,
missing_panics_doc,
module_name_repetitions,
must_use_candidate,
redundant_field_names,
too_many_lines,
use_debug,
use_self
)
)]
#[macro_use]
extern crate serde;
mod de;
mod error;
mod ser;
mod assert;
mod configure;
mod token;
pub use assert::{
assert_de_tokens, assert_de_tokens_error, assert_ser_tokens, assert_ser_tokens_error,
assert_tokens,
};
pub use token::Token;
pub use configure::{Compact, Configure, Readable};
// Not public API.
#[doc(hidden)]
pub use de::Deserializer;

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use serde::{ser, Serialize};
use error::Error;
use token::Token;
/// A `Serializer` that ensures that a value serializes to a given list of
/// tokens.
#[derive(Debug)]
pub struct Serializer<'a> {
tokens: &'a [Token],
}
impl<'a> Serializer<'a> {
/// Creates the serializer.
pub fn new(tokens: &'a [Token]) -> Self {
Serializer { tokens: tokens }
}
/// Pulls the next token off of the serializer, ignoring it.
fn next_token(&mut self) -> Option<Token> {
if let Some((&first, rest)) = self.tokens.split_first() {
self.tokens = rest;
Some(first)
} else {
None
}
}
pub fn remaining(&self) -> usize {
self.tokens.len()
}
}
macro_rules! assert_next_token {
($ser:expr, $actual:ident) => {{
assert_next_token!($ser, stringify!($actual), Token::$actual, true);
}};
($ser:expr, $actual:ident($v:expr)) => {{
assert_next_token!(
$ser,
format_args!(concat!(stringify!($actual), "({:?})"), $v),
Token::$actual(v),
v == $v
);
}};
($ser:expr, $actual:ident { $($k:ident),* }) => {{
let compare = ($($k,)*);
let field_format = || {
use std::fmt::Write;
let mut buffer = String::new();
$(
write!(&mut buffer, concat!(stringify!($k), ": {:?}, "), $k).unwrap();
)*
buffer
};
assert_next_token!(
$ser,
format_args!(concat!(stringify!($actual), " {{ {}}}"), field_format()),
Token::$actual { $($k),* },
($($k,)*) == compare
);
}};
($ser:expr, $actual:expr, $pat:pat, $guard:expr) => {
match $ser.next_token() {
Some($pat) if $guard => {}
Some(expected) => {
panic!("expected Token::{} but serialized as {}",
expected, $actual);
}
None => {
panic!("expected end of tokens, but {} was serialized",
$actual);
}
}
};
}
impl<'s, 'a> ser::Serializer for &'s mut Serializer<'a> {
type Ok = ();
type Error = Error;
type SerializeSeq = Self;
type SerializeTuple = Self;
type SerializeTupleStruct = Self;
type SerializeTupleVariant = Variant<'s, 'a>;
type SerializeMap = Self;
type SerializeStruct = Self;
type SerializeStructVariant = Variant<'s, 'a>;
fn serialize_bool(self, v: bool) -> Result<(), Error> {
assert_next_token!(self, Bool(v));
Ok(())
}
fn serialize_i8(self, v: i8) -> Result<(), Error> {
assert_next_token!(self, I8(v));
Ok(())
}
fn serialize_i16(self, v: i16) -> Result<(), Error> {
assert_next_token!(self, I16(v));
Ok(())
}
fn serialize_i32(self, v: i32) -> Result<(), Error> {
assert_next_token!(self, I32(v));
Ok(())
}
fn serialize_i64(self, v: i64) -> Result<(), Error> {
assert_next_token!(self, I64(v));
Ok(())
}
fn serialize_u8(self, v: u8) -> Result<(), Error> {
assert_next_token!(self, U8(v));
Ok(())
}
fn serialize_u16(self, v: u16) -> Result<(), Error> {
assert_next_token!(self, U16(v));
Ok(())
}
fn serialize_u32(self, v: u32) -> Result<(), Error> {
assert_next_token!(self, U32(v));
Ok(())
}
fn serialize_u64(self, v: u64) -> Result<(), Error> {
assert_next_token!(self, U64(v));
Ok(())
}
fn serialize_f32(self, v: f32) -> Result<(), Error> {
assert_next_token!(self, F32(v));
Ok(())
}
fn serialize_f64(self, v: f64) -> Result<(), Error> {
assert_next_token!(self, F64(v));
Ok(())
}
fn serialize_char(self, v: char) -> Result<(), Error> {
assert_next_token!(self, Char(v));
Ok(())
}
fn serialize_str(self, v: &str) -> Result<(), Error> {
match self.tokens.first() {
Some(&Token::BorrowedStr(_)) => assert_next_token!(self, BorrowedStr(v)),
Some(&Token::String(_)) => assert_next_token!(self, String(v)),
_ => assert_next_token!(self, Str(v)),
}
Ok(())
}
fn serialize_bytes(self, v: &[u8]) -> Result<(), Self::Error> {
match self.tokens.first() {
Some(&Token::BorrowedBytes(_)) => assert_next_token!(self, BorrowedBytes(v)),
Some(&Token::ByteBuf(_)) => assert_next_token!(self, ByteBuf(v)),
_ => assert_next_token!(self, Bytes(v)),
}
Ok(())
}
fn serialize_unit(self) -> Result<(), Error> {
assert_next_token!(self, Unit);
Ok(())
}
fn serialize_unit_struct(self, name: &'static str) -> Result<(), Error> {
assert_next_token!(self, UnitStruct { name });
Ok(())
}
fn serialize_unit_variant(
self,
name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> Result<(), Error> {
if self.tokens.first() == Some(&Token::Enum { name: name }) {
self.next_token();
assert_next_token!(self, Str(variant));
assert_next_token!(self, Unit);
} else {
assert_next_token!(self, UnitVariant { name, variant });
}
Ok(())
}
fn serialize_newtype_struct<T: ?Sized>(self, name: &'static str, value: &T) -> Result<(), Error>
where
T: Serialize,
{
assert_next_token!(self, NewtypeStruct { name });
value.serialize(self)
}
fn serialize_newtype_variant<T: ?Sized>(
self,
name: &'static str,
_variant_index: u32,
variant: &'static str,
value: &T,
) -> Result<(), Error>
where
T: Serialize,
{
if self.tokens.first() == Some(&Token::Enum { name: name }) {
self.next_token();
assert_next_token!(self, Str(variant));
} else {
assert_next_token!(self, NewtypeVariant { name, variant });
}
value.serialize(self)
}
fn serialize_none(self) -> Result<(), Error> {
assert_next_token!(self, None);
Ok(())
}
fn serialize_some<T: ?Sized>(self, value: &T) -> Result<(), Error>
where
T: Serialize,
{
assert_next_token!(self, Some);
value.serialize(self)
}
fn serialize_seq(self, len: Option<usize>) -> Result<Self, Error> {
assert_next_token!(self, Seq { len });
Ok(self)
}
fn serialize_tuple(self, len: usize) -> Result<Self, Error> {
assert_next_token!(self, Tuple { len });
Ok(self)
}
fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self, Error> {
assert_next_token!(self, TupleStruct { name, len });
Ok(self)
}
fn serialize_tuple_variant(
self,
name: &'static str,
_variant_index: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeTupleVariant, Error> {
if self.tokens.first() == Some(&Token::Enum { name: name }) {
self.next_token();
assert_next_token!(self, Str(variant));
let len = Some(len);
assert_next_token!(self, Seq { len });
Ok(Variant {
ser: self,
end: Token::SeqEnd,
})
} else {
assert_next_token!(self, TupleVariant { name, variant, len });
Ok(Variant {
ser: self,
end: Token::TupleVariantEnd,
})
}
}
fn serialize_map(self, len: Option<usize>) -> Result<Self, Error> {
assert_next_token!(self, Map { len });
Ok(self)
}
fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self, Error> {
assert_next_token!(self, Struct { name, len });
Ok(self)
}
fn serialize_struct_variant(
self,
name: &'static str,
_variant_index: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeStructVariant, Error> {
if self.tokens.first() == Some(&Token::Enum { name: name }) {
self.next_token();
assert_next_token!(self, Str(variant));
let len = Some(len);
assert_next_token!(self, Map { len });
Ok(Variant {
ser: self,
end: Token::MapEnd,
})
} else {
assert_next_token!(self, StructVariant { name, variant, len });
Ok(Variant {
ser: self,
end: Token::StructVariantEnd,
})
}
}
fn is_human_readable(&self) -> bool {
panic!(
"Types which have different human-readable and compact representations \
must explicitly mark their test cases with `serde_test::Configure`"
);
}
}
pub struct Variant<'s, 'a: 's> {
ser: &'s mut Serializer<'a>,
end: Token,
}
impl<'s, 'a> ser::SerializeSeq for &'s mut Serializer<'a> {
type Ok = ();
type Error = Error;
fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where
T: Serialize,
{
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Error> {
assert_next_token!(self, SeqEnd);
Ok(())
}
}
impl<'s, 'a> ser::SerializeTuple for &'s mut Serializer<'a> {
type Ok = ();
type Error = Error;
fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where
T: Serialize,
{
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Error> {
assert_next_token!(self, TupleEnd);
Ok(())
}
}
impl<'s, 'a> ser::SerializeTupleStruct for &'s mut Serializer<'a> {
type Ok = ();
type Error = Error;
fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where
T: Serialize,
{
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Error> {
assert_next_token!(self, TupleStructEnd);
Ok(())
}
}
impl<'s, 'a> ser::SerializeTupleVariant for Variant<'s, 'a> {
type Ok = ();
type Error = Error;
fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where
T: Serialize,
{
value.serialize(&mut *self.ser)
}
fn end(self) -> Result<(), Error> {
match self.end {
Token::TupleVariantEnd => assert_next_token!(self.ser, TupleVariantEnd),
Token::SeqEnd => assert_next_token!(self.ser, SeqEnd),
_ => unreachable!(),
}
Ok(())
}
}
impl<'s, 'a> ser::SerializeMap for &'s mut Serializer<'a> {
type Ok = ();
type Error = Error;
fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Self::Error>
where
T: Serialize,
{
key.serialize(&mut **self)
}
fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: Serialize,
{
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Self::Error> {
assert_next_token!(self, MapEnd);
Ok(())
}
}
impl<'s, 'a> ser::SerializeStruct for &'s mut Serializer<'a> {
type Ok = ();
type Error = Error;
fn serialize_field<T: ?Sized>(
&mut self,
key: &'static str,
value: &T,
) -> Result<(), Self::Error>
where
T: Serialize,
{
key.serialize(&mut **self)?;
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Self::Error> {
assert_next_token!(self, StructEnd);
Ok(())
}
}
impl<'s, 'a> ser::SerializeStructVariant for Variant<'s, 'a> {
type Ok = ();
type Error = Error;
fn serialize_field<T: ?Sized>(
&mut self,
key: &'static str,
value: &T,
) -> Result<(), Self::Error>
where
T: Serialize,
{
key.serialize(&mut *self.ser)?;
value.serialize(&mut *self.ser)
}
fn end(self) -> Result<(), Self::Error> {
match self.end {
Token::StructVariantEnd => assert_next_token!(self.ser, StructVariantEnd),
Token::MapEnd => assert_next_token!(self.ser, MapEnd),
_ => unreachable!(),
}
Ok(())
}
}

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use std::fmt::{self, Debug, Display};
#[derive(Copy, Clone, PartialEq, Debug)]
pub enum Token {
/// A serialized `bool`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&true, &[Token::Bool(true)]);
/// ```
Bool(bool),
/// A serialized `i8`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0i8, &[Token::I8(0)]);
/// ```
I8(i8),
/// A serialized `i16`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0i16, &[Token::I16(0)]);
/// ```
I16(i16),
/// A serialized `i32`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0i32, &[Token::I32(0)]);
/// ```
I32(i32),
/// A serialized `i64`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0i64, &[Token::I64(0)]);
/// ```
I64(i64),
/// A serialized `u8`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0u8, &[Token::U8(0)]);
/// ```
U8(u8),
/// A serialized `u16`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0u16, &[Token::U16(0)]);
/// ```
U16(u16),
/// A serialized `u32`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0u32, &[Token::U32(0)]);
/// ```
U32(u32),
/// A serialized `u64`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0u64, &[Token::U64(0)]);
/// ```
U64(u64),
/// A serialized `f32`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0f32, &[Token::F32(0.0)]);
/// ```
F32(f32),
/// A serialized `f64`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&0f64, &[Token::F64(0.0)]);
/// ```
F64(f64),
/// A serialized `char`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&'\n', &[Token::Char('\n')]);
/// ```
Char(char),
/// A serialized `str`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// let s = String::from("transient");
/// assert_tokens(&s, &[Token::Str("transient")]);
/// ```
Str(&'static str),
/// A borrowed `str`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// let s: &str = "borrowed";
/// assert_tokens(&s, &[Token::BorrowedStr("borrowed")]);
/// ```
BorrowedStr(&'static str),
/// A serialized `String`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// let s = String::from("owned");
/// assert_tokens(&s, &[Token::String("owned")]);
/// ```
String(&'static str),
/// A serialized `[u8]`
Bytes(&'static [u8]),
/// A borrowed `[u8]`.
BorrowedBytes(&'static [u8]),
/// A serialized `ByteBuf`
ByteBuf(&'static [u8]),
/// A serialized `Option<T>` containing none.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// let opt = None::<char>;
/// assert_tokens(&opt, &[Token::None]);
/// ```
None,
/// The header to a serialized `Option<T>` containing some value.
///
/// The tokens of the value follow after this header.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// let opt = Some('c');
/// assert_tokens(&opt, &[
/// Token::Some,
/// Token::Char('c'),
/// ]);
/// ```
Some,
/// A serialized `()`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// assert_tokens(&(), &[Token::Unit]);
/// ```
Unit,
/// A serialized unit struct of the given name.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// struct X;
///
/// assert_tokens(&X, &[Token::UnitStruct { name: "X" }]);
/// # }
/// ```
UnitStruct { name: &'static str },
/// A unit variant of an enum.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// enum E {
/// A,
/// }
///
/// let a = E::A;
/// assert_tokens(&a, &[Token::UnitVariant { name: "E", variant: "A" }]);
/// # }
/// ```
UnitVariant {
name: &'static str,
variant: &'static str,
},
/// The header to a serialized newtype struct of the given name.
///
/// After this header is the value contained in the newtype struct.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// struct N(String);
///
/// let n = N("newtype".to_owned());
/// assert_tokens(&n, &[
/// Token::NewtypeStruct { name: "N" },
/// Token::String("newtype"),
/// ]);
/// # }
/// ```
NewtypeStruct { name: &'static str },
/// The header to a newtype variant of an enum.
///
/// After this header is the value contained in the newtype variant.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// enum E {
/// B(u8),
/// }
///
/// let b = E::B(0);
/// assert_tokens(&b, &[
/// Token::NewtypeVariant { name: "E", variant: "B" },
/// Token::U8(0),
/// ]);
/// # }
/// ```
NewtypeVariant {
name: &'static str,
variant: &'static str,
},
/// The header to a sequence.
///
/// After this header are the elements of the sequence, followed by
/// `SeqEnd`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// let vec = vec!['a', 'b', 'c'];
/// assert_tokens(&vec, &[
/// Token::Seq { len: Some(3) },
/// Token::Char('a'),
/// Token::Char('b'),
/// Token::Char('c'),
/// Token::SeqEnd,
/// ]);
/// ```
Seq { len: Option<usize> },
/// An indicator of the end of a sequence.
SeqEnd,
/// The header to a tuple.
///
/// After this header are the elements of the tuple, followed by `TupleEnd`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// let tuple = ('a', 100);
/// assert_tokens(&tuple, &[
/// Token::Tuple { len: 2 },
/// Token::Char('a'),
/// Token::I32(100),
/// Token::TupleEnd,
/// ]);
/// ```
Tuple { len: usize },
/// An indicator of the end of a tuple.
TupleEnd,
/// The header to a tuple struct.
///
/// After this header are the fields of the tuple struct, followed by
/// `TupleStructEnd`.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// struct T(u8, u8);
///
/// let t = T(0, 0);
/// assert_tokens(&t, &[
/// Token::TupleStruct { name: "T", len: 2 },
/// Token::U8(0),
/// Token::U8(0),
/// Token::TupleStructEnd,
/// ]);
/// # }
/// ```
TupleStruct { name: &'static str, len: usize },
/// An indicator of the end of a tuple struct.
TupleStructEnd,
/// The header to a tuple variant of an enum.
///
/// After this header are the fields of the tuple variant, followed by
/// `TupleVariantEnd`.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// enum E {
/// C(u8, u8),
/// }
///
/// let c = E::C(0, 0);
/// assert_tokens(&c, &[
/// Token::TupleVariant { name: "E", variant: "C", len: 2 },
/// Token::U8(0),
/// Token::U8(0),
/// Token::TupleVariantEnd,
/// ]);
/// # }
/// ```
TupleVariant {
name: &'static str,
variant: &'static str,
len: usize,
},
/// An indicator of the end of a tuple variant.
TupleVariantEnd,
/// The header to a map.
///
/// After this header are the entries of the map, followed by `MapEnd`.
///
/// ```edition2018
/// # use serde_test::{assert_tokens, Token};
/// #
/// use std::collections::BTreeMap;
///
/// let mut map = BTreeMap::new();
/// map.insert('A', 65);
/// map.insert('Z', 90);
///
/// assert_tokens(&map, &[
/// Token::Map { len: Some(2) },
/// Token::Char('A'),
/// Token::I32(65),
/// Token::Char('Z'),
/// Token::I32(90),
/// Token::MapEnd,
/// ]);
/// ```
Map { len: Option<usize> },
/// An indicator of the end of a map.
MapEnd,
/// The header of a struct.
///
/// After this header are the fields of the struct, followed by `StructEnd`.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// struct S {
/// a: u8,
/// b: u8,
/// }
///
/// let s = S { a: 0, b: 0 };
/// assert_tokens(&s, &[
/// Token::Struct { name: "S", len: 2 },
/// Token::Str("a"),
/// Token::U8(0),
/// Token::Str("b"),
/// Token::U8(0),
/// Token::StructEnd,
/// ]);
/// # }
/// ```
Struct { name: &'static str, len: usize },
/// An indicator of the end of a struct.
StructEnd,
/// The header of a struct variant of an enum.
///
/// After this header are the fields of the struct variant, followed by
/// `StructVariantEnd`.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// enum E {
/// D { d: u8 },
/// }
///
/// let d = E::D { d: 0 };
/// assert_tokens(&d, &[
/// Token::StructVariant { name: "E", variant: "D", len: 1 },
/// Token::Str("d"),
/// Token::U8(0),
/// Token::StructVariantEnd,
/// ]);
/// # }
/// ```
StructVariant {
name: &'static str,
variant: &'static str,
len: usize,
},
/// An indicator of the end of a struct variant.
StructVariantEnd,
/// The header to an enum of the given name.
///
/// ```edition2018
/// # use serde::{Serialize, Deserialize};
/// # use serde_test::{assert_tokens, Token};
/// #
/// # fn main() {
/// #[derive(Serialize, Deserialize, PartialEq, Debug)]
/// enum E {
/// A,
/// B(u8),
/// C(u8, u8),
/// D { d: u8 },
/// }
///
/// let a = E::A;
/// assert_tokens(&a, &[
/// Token::Enum { name: "E" },
/// Token::Str("A"),
/// Token::Unit,
/// ]);
///
/// let b = E::B(0);
/// assert_tokens(&b, &[
/// Token::Enum { name: "E" },
/// Token::Str("B"),
/// Token::U8(0),
/// ]);
///
/// let c = E::C(0, 0);
/// assert_tokens(&c, &[
/// Token::Enum { name: "E" },
/// Token::Str("C"),
/// Token::Seq { len: Some(2) },
/// Token::U8(0),
/// Token::U8(0),
/// Token::SeqEnd,
/// ]);
///
/// let d = E::D { d: 0 };
/// assert_tokens(&d, &[
/// Token::Enum { name: "E" },
/// Token::Str("D"),
/// Token::Map { len: Some(1) },
/// Token::Str("d"),
/// Token::U8(0),
/// Token::MapEnd,
/// ]);
/// # }
/// ```
Enum { name: &'static str },
}
impl Display for Token {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
Debug::fmt(self, formatter)
}
}

13
test_suite/Cargo.toml
View File

@ -4,18 +4,23 @@ version = "0.0.0"
authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
edition = "2018"
publish = false
build = "build.rs"
[features]
expandtest = []
unstable = ["serde/unstable"]
[dependencies]
serde = { path = "../serde" }
[build-dependencies]
toolchain_find = "0.1"
[dev-dependencies]
automod = "1.0.1"
fnv = "1.0"
macrotest = "=1.0.0"
rustversion = "1.0"
serde = { path = "../serde", features = ["rc"] }
serde = { path = "../serde", features = ["rc", "derive"] }
serde_derive = { path = "../serde_derive", features = ["deserialize_in_place"] }
serde_test = "1.0.176"
trybuild = { version = "1.0.66", features = ["diff"] }
serde_test = { path = "../serde_test" }
trybuild = { version = "1.0.49", features = ["diff"] }

29
test_suite/build.rs Normal file
View File

@ -0,0 +1,29 @@
use std::process::{Command, ExitStatus, Stdio};
fn has_cargo_expand() -> bool {
let cargo_expand = if cfg!(windows) {
"cargo-expand.exe"
} else {
"cargo-expand"
};
Command::new(cargo_expand)
.arg("--version")
.stdin(Stdio::null())
.stdout(Stdio::null())
.stderr(Stdio::null())
.status()
.as_ref()
.map(ExitStatus::success)
.unwrap_or(false)
}
fn has_rustfmt() -> bool {
toolchain_find::find_installed_component("rustfmt").is_some()
}
fn main() {
if cfg!(feature = "expandtest") && has_cargo_expand() && has_rustfmt() {
println!("cargo:rustc-cfg=expandtest");
}
}

4
test_suite/no_std/Cargo.toml
View File

@ -1,13 +1,11 @@
[package]
name = "serde_derive_tests_no_std"
version = "0.0.0"
authors = ["David Tolnay <dtolnay@gmail.com>"]
edition = "2018"
publish = false
[dependencies]
libc = { version = "0.2", default-features = false }
serde = { path = "../../serde", default-features = false }
serde_derive = { path = "../../serde_derive" }
serde = { path = "../../serde", default-features = false, features = ["derive"] }
[workspace]

3
test_suite/no_std/src/main.rs
View File

@ -1,4 +1,3 @@
#![allow(internal_features)]
#![feature(lang_items, start)]
#![no_std]
@ -20,7 +19,7 @@ fn panic(_info: &core::panic::PanicInfo) -> ! {
//////////////////////////////////////////////////////////////////////////////
use serde_derive::{Deserialize, Serialize};
use serde::{Serialize, Deserialize};
#[derive(Serialize, Deserialize)]
struct Unit;

2
test_suite/tests/compiletest.rs
View File

@ -1,7 +1,5 @@
#[cfg_attr(target_os = "emscripten", ignore)]
#[rustversion::attr(not(nightly), ignore)]
#[cfg_attr(miri, ignore)]
#[allow(unused_attributes)]
#[test]
fn ui() {
let t = trybuild::TestCases::new();

1426
test_suite/tests/expand/de_enum.expanded.rs Normal file
View File

File diff suppressed because it is too large Load Diff

13
test_suite/tests/expand/de_enum.rs Normal file
View File

@ -0,0 +1,13 @@
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize)]
enum DeEnum<B, C, D> {
Unit,
Seq(i8, B, C, D),
Map { a: i8, b: B, c: C, d: D },
// Make sure we can support more than one variant.
_Unit2,
_Seq2(i8, B, C, D),
_Map2 { a: i8, b: B, c: C, d: D },
}

410
test_suite/tests/expand/default_ty_param.expanded.rs Normal file
View File

@ -0,0 +1,410 @@
use serde::{Deserialize, Serialize};
trait AssociatedType {
type X;
}
impl AssociatedType for i32 {
type X = i32;
}
struct DefaultTyParam<T: AssociatedType<X = i32> = i32> {
phantom: PhantomData<T>,
}
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<T: AssociatedType<X = i32>> _serde::Serialize for DefaultTyParam<T> {
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
let mut __serde_state = match _serde::Serializer::serialize_struct(
__serializer,
"DefaultTyParam",
false as usize + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStruct::serialize_field(
&mut __serde_state,
"phantom",
&self.phantom,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeStruct::end(__serde_state)
}
}
};
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de, T: AssociatedType<X = i32>> _serde::Deserialize<'de> for DefaultTyParam<T> {
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "field identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"phantom" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"phantom" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de, T: AssociatedType<X = i32>> {
marker: _serde::__private::PhantomData<DefaultTyParam<T>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, T: AssociatedType<X = i32>> _serde::de::Visitor<'de> for __Visitor<'de, T> {
type Value = DefaultTyParam<T>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "struct DefaultTyParam")
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<PhantomData<T>>(
&mut __seq,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"struct DefaultTyParam with 1 element",
));
}
};
_serde::__private::Ok(DefaultTyParam { phantom: __field0 })
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: _serde::__private::Option<PhantomData<T>> =
_serde::__private::None;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if _serde::__private::Option::is_some(&__field0) {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field(
"phantom",
),
);
}
__field0 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<PhantomData<T>>(
&mut __map,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
let __field0 = match __field0 {
_serde::__private::Some(__field0) => __field0,
_serde::__private::None => {
match _serde::__private::de::missing_field("phantom") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
_serde::__private::Ok(DefaultTyParam { phantom: __field0 })
}
}
const FIELDS: &'static [&'static str] = &["phantom"];
_serde::Deserializer::deserialize_struct(
__deserializer,
"DefaultTyParam",
FIELDS,
__Visitor {
marker: _serde::__private::PhantomData::<DefaultTyParam<T>>,
lifetime: _serde::__private::PhantomData,
},
)
}
fn deserialize_in_place<__D>(
__deserializer: __D,
__place: &mut Self,
) -> _serde::__private::Result<(), __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "field identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"phantom" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"phantom" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de, 'place, T: AssociatedType<X = i32> + 'place> {
place: &'place mut DefaultTyParam<T>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'place, T: AssociatedType<X = i32> + 'place> _serde::de::Visitor<'de>
for __Visitor<'de, 'place, T>
{
type Value = ();
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "struct DefaultTyParam")
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.phantom),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"struct DefaultTyParam with 1 element",
));
}
_serde::__private::Ok(())
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: bool = false;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if __field0 {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field(
"phantom",
),
);
}
match _serde::de::MapAccess::next_value_seed(
&mut __map,
_serde::__private::de::InPlaceSeed(&mut self.place.phantom),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
__field0 = true;
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
if !__field0 {
self.place.phantom = match _serde::__private::de::missing_field("phantom") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
};
_serde::__private::Ok(())
}
}
const FIELDS: &'static [&'static str] = &["phantom"];
_serde::Deserializer::deserialize_struct(
__deserializer,
"DefaultTyParam",
FIELDS,
__Visitor {
place: __place,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};

14
test_suite/tests/expand/default_ty_param.rs Normal file
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@ -0,0 +1,14 @@
use serde::{Deserialize, Serialize};
trait AssociatedType {
type X;
}
impl AssociatedType for i32 {
type X = i32;
}
#[derive(Serialize, Deserialize)]
struct DefaultTyParam<T: AssociatedType<X = i32> = i32> {
phantom: PhantomData<T>,
}

590
test_suite/tests/expand/generic_enum.expanded.rs Normal file
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@ -0,0 +1,590 @@
use serde::{Deserialize, Serialize};
pub enum GenericEnum<T, U> {
Unit,
NewType(T),
Seq(T, U),
Map { x: T, y: U },
}
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<T, U> _serde::Serialize for GenericEnum<T, U>
where
T: _serde::Serialize,
U: _serde::Serialize,
{
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
match *self {
GenericEnum::Unit => _serde::Serializer::serialize_unit_variant(
__serializer,
"GenericEnum",
0u32,
"Unit",
),
GenericEnum::NewType(ref __field0) => {
_serde::Serializer::serialize_newtype_variant(
__serializer,
"GenericEnum",
1u32,
"NewType",
__field0,
)
}
GenericEnum::Seq(ref __field0, ref __field1) => {
let mut __serde_state = match _serde::Serializer::serialize_tuple_variant(
__serializer,
"GenericEnum",
2u32,
"Seq",
0 + 1 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field0,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeTupleVariant::end(__serde_state)
}
GenericEnum::Map { ref x, ref y } => {
let mut __serde_state = match _serde::Serializer::serialize_struct_variant(
__serializer,
"GenericEnum",
3u32,
"Map",
0 + 1 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"x",
x,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"y",
y,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeStructVariant::end(__serde_state)
}
}
}
}
};
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de, T, U> _serde::Deserialize<'de> for GenericEnum<T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__field1,
__field2,
__field3,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "variant identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
1u64 => _serde::__private::Ok(__Field::__field1),
2u64 => _serde::__private::Ok(__Field::__field2),
3u64 => _serde::__private::Ok(__Field::__field3),
_ => _serde::__private::Err(_serde::de::Error::invalid_value(
_serde::de::Unexpected::Unsigned(__value),
&"variant index 0 <= i < 4",
)),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"Unit" => _serde::__private::Ok(__Field::__field0),
"NewType" => _serde::__private::Ok(__Field::__field1),
"Seq" => _serde::__private::Ok(__Field::__field2),
"Map" => _serde::__private::Ok(__Field::__field3),
_ => _serde::__private::Err(_serde::de::Error::unknown_variant(
__value, VARIANTS,
)),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"Unit" => _serde::__private::Ok(__Field::__field0),
b"NewType" => _serde::__private::Ok(__Field::__field1),
b"Seq" => _serde::__private::Ok(__Field::__field2),
b"Map" => _serde::__private::Ok(__Field::__field3),
_ => {
let __value = &_serde::__private::from_utf8_lossy(__value);
_serde::__private::Err(_serde::de::Error::unknown_variant(
__value, VARIANTS,
))
}
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
marker: _serde::__private::PhantomData<GenericEnum<T, U>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, T, U> _serde::de::Visitor<'de> for __Visitor<'de, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
type Value = GenericEnum<T, U>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "enum GenericEnum")
}
fn visit_enum<__A>(
self,
__data: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::EnumAccess<'de>,
{
match match _serde::de::EnumAccess::variant(__data) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
(__Field::__field0, __variant) => {
match _serde::de::VariantAccess::unit_variant(__variant) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::__private::Ok(GenericEnum::Unit)
}
(__Field::__field1, __variant) => _serde::__private::Result::map(
_serde::de::VariantAccess::newtype_variant::<T>(__variant),
GenericEnum::NewType,
),
(__Field::__field2, __variant) => {
struct __Visitor<'de, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
marker: _serde::__private::PhantomData<GenericEnum<T, U>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, T, U> _serde::de::Visitor<'de> for __Visitor<'de, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
type Value = GenericEnum<T, U>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result
{
_serde::__private::Formatter::write_str(
__formatter,
"tuple variant GenericEnum::Seq",
)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<
T,
>(
&mut __seq
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde :: __private :: Err (_serde :: de :: Error :: invalid_length (0usize , & "tuple variant GenericEnum::Seq with 2 elements")) ;
}
};
let __field1 = match match _serde::de::SeqAccess::next_element::<
U,
>(
&mut __seq
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde :: __private :: Err (_serde :: de :: Error :: invalid_length (1usize , & "tuple variant GenericEnum::Seq with 2 elements")) ;
}
};
_serde::__private::Ok(GenericEnum::Seq(__field0, __field1))
}
}
_serde::de::VariantAccess::tuple_variant(
__variant,
2usize,
__Visitor {
marker: _serde::__private::PhantomData::<GenericEnum<T, U>>,
lifetime: _serde::__private::PhantomData,
},
)
}
(__Field::__field3, __variant) => {
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__field1,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result
{
_serde::__private::Formatter::write_str(
__formatter,
"field identifier",
)
}
fn visit_u64<__E>(
self,
__value: u64,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
1u64 => _serde::__private::Ok(__Field::__field1),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"x" => _serde::__private::Ok(__Field::__field0),
"y" => _serde::__private::Ok(__Field::__field1),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"x" => _serde::__private::Ok(__Field::__field0),
b"y" => _serde::__private::Ok(__Field::__field1),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(
__deserializer,
__FieldVisitor,
)
}
}
struct __Visitor<'de, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
marker: _serde::__private::PhantomData<GenericEnum<T, U>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, T, U> _serde::de::Visitor<'de> for __Visitor<'de, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
type Value = GenericEnum<T, U>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result
{
_serde::__private::Formatter::write_str(
__formatter,
"struct variant GenericEnum::Map",
)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<
T,
>(
&mut __seq
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde :: __private :: Err (_serde :: de :: Error :: invalid_length (0usize , & "struct variant GenericEnum::Map with 2 elements")) ;
}
};
let __field1 = match match _serde::de::SeqAccess::next_element::<
U,
>(
&mut __seq
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde :: __private :: Err (_serde :: de :: Error :: invalid_length (1usize , & "struct variant GenericEnum::Map with 2 elements")) ;
}
};
_serde::__private::Ok(GenericEnum::Map {
x: __field0,
y: __field1,
})
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: _serde::__private::Option<T> =
_serde::__private::None;
let mut __field1: _serde::__private::Option<U> =
_serde::__private::None;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if _serde::__private::Option::is_some(&__field0) {
return _serde :: __private :: Err (< __A :: Error as _serde :: de :: Error > :: duplicate_field ("x")) ;
}
__field0 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<T>(
&mut __map,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
__Field::__field1 => {
if _serde::__private::Option::is_some(&__field1) {
return _serde :: __private :: Err (< __A :: Error as _serde :: de :: Error > :: duplicate_field ("y")) ;
}
__field1 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<U>(
&mut __map,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(
&mut __map
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
let __field0 = match __field0 {
_serde::__private::Some(__field0) => __field0,
_serde::__private::None => {
match _serde::__private::de::missing_field("x") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
let __field1 = match __field1 {
_serde::__private::Some(__field1) => __field1,
_serde::__private::None => {
match _serde::__private::de::missing_field("y") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
_serde::__private::Ok(GenericEnum::Map {
x: __field0,
y: __field1,
})
}
}
const FIELDS: &'static [&'static str] = &["x", "y"];
_serde::de::VariantAccess::struct_variant(
__variant,
FIELDS,
__Visitor {
marker: _serde::__private::PhantomData::<GenericEnum<T, U>>,
lifetime: _serde::__private::PhantomData,
},
)
}
}
}
}
const VARIANTS: &'static [&'static str] = &["Unit", "NewType", "Seq", "Map"];
_serde::Deserializer::deserialize_enum(
__deserializer,
"GenericEnum",
VARIANTS,
__Visitor {
marker: _serde::__private::PhantomData::<GenericEnum<T, U>>,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};

9
test_suite/tests/expand/generic_enum.rs Normal file
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@ -0,0 +1,9 @@
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize)]
pub enum GenericEnum<T, U> {
Unit,
NewType(T),
Seq(T, U),
Map { x: T, y: U },
}

594
test_suite/tests/expand/generic_struct.expanded.rs Normal file
View File

@ -0,0 +1,594 @@
use serde::{Deserialize, Serialize};
pub struct GenericStruct<T> {
x: T,
}
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<T> _serde::Serialize for GenericStruct<T>
where
T: _serde::Serialize,
{
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
let mut __serde_state = match _serde::Serializer::serialize_struct(
__serializer,
"GenericStruct",
false as usize + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStruct::serialize_field(&mut __serde_state, "x", &self.x) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeStruct::end(__serde_state)
}
}
};
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de, T> _serde::Deserialize<'de> for GenericStruct<T>
where
T: _serde::Deserialize<'de>,
{
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "field identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"x" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"x" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de, T>
where
T: _serde::Deserialize<'de>,
{
marker: _serde::__private::PhantomData<GenericStruct<T>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, T> _serde::de::Visitor<'de> for __Visitor<'de, T>
where
T: _serde::Deserialize<'de>,
{
type Value = GenericStruct<T>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "struct GenericStruct")
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<T>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"struct GenericStruct with 1 element",
));
}
};
_serde::__private::Ok(GenericStruct { x: __field0 })
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: _serde::__private::Option<T> = _serde::__private::None;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if _serde::__private::Option::is_some(&__field0) {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field("x"),
);
}
__field0 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<T>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
let __field0 = match __field0 {
_serde::__private::Some(__field0) => __field0,
_serde::__private::None => {
match _serde::__private::de::missing_field("x") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
_serde::__private::Ok(GenericStruct { x: __field0 })
}
}
const FIELDS: &'static [&'static str] = &["x"];
_serde::Deserializer::deserialize_struct(
__deserializer,
"GenericStruct",
FIELDS,
__Visitor {
marker: _serde::__private::PhantomData::<GenericStruct<T>>,
lifetime: _serde::__private::PhantomData,
},
)
}
fn deserialize_in_place<__D>(
__deserializer: __D,
__place: &mut Self,
) -> _serde::__private::Result<(), __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "field identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"x" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"x" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de, 'place, T: 'place>
where
T: _serde::Deserialize<'de>,
{
place: &'place mut GenericStruct<T>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'place, T: 'place> _serde::de::Visitor<'de> for __Visitor<'de, 'place, T>
where
T: _serde::Deserialize<'de>,
{
type Value = ();
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "struct GenericStruct")
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.x),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"struct GenericStruct with 1 element",
));
}
_serde::__private::Ok(())
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: bool = false;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if __field0 {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field("x"),
);
}
match _serde::de::MapAccess::next_value_seed(
&mut __map,
_serde::__private::de::InPlaceSeed(&mut self.place.x),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
__field0 = true;
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
if !__field0 {
self.place.x = match _serde::__private::de::missing_field("x") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
};
_serde::__private::Ok(())
}
}
const FIELDS: &'static [&'static str] = &["x"];
_serde::Deserializer::deserialize_struct(
__deserializer,
"GenericStruct",
FIELDS,
__Visitor {
place: __place,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};
pub struct GenericNewTypeStruct<T>(T);
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<T> _serde::Serialize for GenericNewTypeStruct<T>
where
T: _serde::Serialize,
{
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
_serde::Serializer::serialize_newtype_struct(
__serializer,
"GenericNewTypeStruct",
&self.0,
)
}
}
};
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de, T> _serde::Deserialize<'de> for GenericNewTypeStruct<T>
where
T: _serde::Deserialize<'de>,
{
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
struct __Visitor<'de, T>
where
T: _serde::Deserialize<'de>,
{
marker: _serde::__private::PhantomData<GenericNewTypeStruct<T>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, T> _serde::de::Visitor<'de> for __Visitor<'de, T>
where
T: _serde::Deserialize<'de>,
{
type Value = GenericNewTypeStruct<T>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(
__formatter,
"tuple struct GenericNewTypeStruct",
)
}
#[inline]
fn visit_newtype_struct<__E>(
self,
__e: __E,
) -> _serde::__private::Result<Self::Value, __E::Error>
where
__E: _serde::Deserializer<'de>,
{
let __field0: T = match <T as _serde::Deserialize>::deserialize(__e) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::__private::Ok(GenericNewTypeStruct(__field0))
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<T>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"tuple struct GenericNewTypeStruct with 1 element",
));
}
};
_serde::__private::Ok(GenericNewTypeStruct(__field0))
}
}
_serde::Deserializer::deserialize_newtype_struct(
__deserializer,
"GenericNewTypeStruct",
__Visitor {
marker: _serde::__private::PhantomData::<GenericNewTypeStruct<T>>,
lifetime: _serde::__private::PhantomData,
},
)
}
fn deserialize_in_place<__D>(
__deserializer: __D,
__place: &mut Self,
) -> _serde::__private::Result<(), __D::Error>
where
__D: _serde::Deserializer<'de>,
{
struct __Visitor<'de, 'place, T: 'place>
where
T: _serde::Deserialize<'de>,
{
place: &'place mut GenericNewTypeStruct<T>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'place, T: 'place> _serde::de::Visitor<'de> for __Visitor<'de, 'place, T>
where
T: _serde::Deserialize<'de>,
{
type Value = ();
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(
__formatter,
"tuple struct GenericNewTypeStruct",
)
}
#[inline]
fn visit_newtype_struct<__E>(
self,
__e: __E,
) -> _serde::__private::Result<Self::Value, __E::Error>
where
__E: _serde::Deserializer<'de>,
{
_serde::Deserialize::deserialize_in_place(__e, &mut self.place.0)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.0),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"tuple struct GenericNewTypeStruct with 1 element",
));
}
_serde::__private::Ok(())
}
}
_serde::Deserializer::deserialize_newtype_struct(
__deserializer,
"GenericNewTypeStruct",
__Visitor {
place: __place,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};

9
test_suite/tests/expand/generic_struct.rs Normal file
View File

@ -0,0 +1,9 @@
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize)]
pub struct GenericStruct<T> {
x: T,
}
#[derive(Serialize, Deserialize)]
pub struct GenericNewTypeStruct<T>(T);

172
test_suite/tests/expand/generic_tuple_struct.expanded.rs Normal file
View File

@ -0,0 +1,172 @@
use serde::{Deserialize, Serialize};
pub struct GenericTupleStruct<T, U>(T, U);
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de, T, U> _serde::Deserialize<'de> for GenericTupleStruct<T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
struct __Visitor<'de, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
marker: _serde::__private::PhantomData<GenericTupleStruct<T, U>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, T, U> _serde::de::Visitor<'de> for __Visitor<'de, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
type Value = GenericTupleStruct<T, U>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(
__formatter,
"tuple struct GenericTupleStruct",
)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<T>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"tuple struct GenericTupleStruct with 2 elements",
));
}
};
let __field1 = match match _serde::de::SeqAccess::next_element::<U>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
1usize,
&"tuple struct GenericTupleStruct with 2 elements",
));
}
};
_serde::__private::Ok(GenericTupleStruct(__field0, __field1))
}
}
_serde::Deserializer::deserialize_tuple_struct(
__deserializer,
"GenericTupleStruct",
2usize,
__Visitor {
marker: _serde::__private::PhantomData::<GenericTupleStruct<T, U>>,
lifetime: _serde::__private::PhantomData,
},
)
}
fn deserialize_in_place<__D>(
__deserializer: __D,
__place: &mut Self,
) -> _serde::__private::Result<(), __D::Error>
where
__D: _serde::Deserializer<'de>,
{
struct __Visitor<'de, 'place, T: 'place, U: 'place>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
place: &'place mut GenericTupleStruct<T, U>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'place, T: 'place, U: 'place> _serde::de::Visitor<'de> for __Visitor<'de, 'place, T, U>
where
T: _serde::Deserialize<'de>,
U: _serde::Deserialize<'de>,
{
type Value = ();
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(
__formatter,
"tuple struct GenericTupleStruct",
)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.0),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"tuple struct GenericTupleStruct with 2 elements",
));
}
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.1),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
1usize,
&"tuple struct GenericTupleStruct with 2 elements",
));
}
_serde::__private::Ok(())
}
}
_serde::Deserializer::deserialize_tuple_struct(
__deserializer,
"GenericTupleStruct",
2usize,
__Visitor {
place: __place,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};

4
test_suite/tests/expand/generic_tuple_struct.rs Normal file
View File

@ -0,0 +1,4 @@
use serde::{Deserialize, Serialize};
#[derive(Deserialize)]
pub struct GenericTupleStruct<T, U>(T, U);

607
test_suite/tests/expand/lifetimes.expanded.rs Normal file
View File

@ -0,0 +1,607 @@
use serde::{Deserialize, Serialize};
enum Lifetimes<'a> {
LifetimeSeq(&'a i32),
NoLifetimeSeq(i32),
LifetimeMap { a: &'a i32 },
NoLifetimeMap { a: i32 },
}
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'a> _serde::Serialize for Lifetimes<'a> {
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
match *self {
Lifetimes::LifetimeSeq(ref __field0) => {
_serde::Serializer::serialize_newtype_variant(
__serializer,
"Lifetimes",
0u32,
"LifetimeSeq",
__field0,
)
}
Lifetimes::NoLifetimeSeq(ref __field0) => {
_serde::Serializer::serialize_newtype_variant(
__serializer,
"Lifetimes",
1u32,
"NoLifetimeSeq",
__field0,
)
}
Lifetimes::LifetimeMap { ref a } => {
let mut __serde_state = match _serde::Serializer::serialize_struct_variant(
__serializer,
"Lifetimes",
2u32,
"LifetimeMap",
0 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"a",
a,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeStructVariant::end(__serde_state)
}
Lifetimes::NoLifetimeMap { ref a } => {
let mut __serde_state = match _serde::Serializer::serialize_struct_variant(
__serializer,
"Lifetimes",
3u32,
"NoLifetimeMap",
0 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"a",
a,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeStructVariant::end(__serde_state)
}
}
}
}
};
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de, 'a> _serde::Deserialize<'de> for Lifetimes<'a> {
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__field1,
__field2,
__field3,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "variant identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
1u64 => _serde::__private::Ok(__Field::__field1),
2u64 => _serde::__private::Ok(__Field::__field2),
3u64 => _serde::__private::Ok(__Field::__field3),
_ => _serde::__private::Err(_serde::de::Error::invalid_value(
_serde::de::Unexpected::Unsigned(__value),
&"variant index 0 <= i < 4",
)),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"LifetimeSeq" => _serde::__private::Ok(__Field::__field0),
"NoLifetimeSeq" => _serde::__private::Ok(__Field::__field1),
"LifetimeMap" => _serde::__private::Ok(__Field::__field2),
"NoLifetimeMap" => _serde::__private::Ok(__Field::__field3),
_ => _serde::__private::Err(_serde::de::Error::unknown_variant(
__value, VARIANTS,
)),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"LifetimeSeq" => _serde::__private::Ok(__Field::__field0),
b"NoLifetimeSeq" => _serde::__private::Ok(__Field::__field1),
b"LifetimeMap" => _serde::__private::Ok(__Field::__field2),
b"NoLifetimeMap" => _serde::__private::Ok(__Field::__field3),
_ => {
let __value = &_serde::__private::from_utf8_lossy(__value);
_serde::__private::Err(_serde::de::Error::unknown_variant(
__value, VARIANTS,
))
}
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de, 'a> {
marker: _serde::__private::PhantomData<Lifetimes<'a>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'a> _serde::de::Visitor<'de> for __Visitor<'de, 'a> {
type Value = Lifetimes<'a>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "enum Lifetimes")
}
fn visit_enum<__A>(
self,
__data: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::EnumAccess<'de>,
{
match match _serde::de::EnumAccess::variant(__data) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
(__Field::__field0, __variant) => _serde::__private::Result::map(
_serde::de::VariantAccess::newtype_variant::<&'a i32>(__variant),
Lifetimes::LifetimeSeq,
),
(__Field::__field1, __variant) => _serde::__private::Result::map(
_serde::de::VariantAccess::newtype_variant::<i32>(__variant),
Lifetimes::NoLifetimeSeq,
),
(__Field::__field2, __variant) => {
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result
{
_serde::__private::Formatter::write_str(
__formatter,
"field identifier",
)
}
fn visit_u64<__E>(
self,
__value: u64,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"a" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"a" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(
__deserializer,
__FieldVisitor,
)
}
}
struct __Visitor<'de, 'a> {
marker: _serde::__private::PhantomData<Lifetimes<'a>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'a> _serde::de::Visitor<'de> for __Visitor<'de, 'a> {
type Value = Lifetimes<'a>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result
{
_serde::__private::Formatter::write_str(
__formatter,
"struct variant Lifetimes::LifetimeMap",
)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<
&'a i32,
>(
&mut __seq
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde :: __private :: Err (_serde :: de :: Error :: invalid_length (0usize , & "struct variant Lifetimes::LifetimeMap with 1 element")) ;
}
};
_serde::__private::Ok(Lifetimes::LifetimeMap { a: __field0 })
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: _serde::__private::Option<&'a i32> =
_serde::__private::None;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if _serde::__private::Option::is_some(&__field0) {
return _serde :: __private :: Err (< __A :: Error as _serde :: de :: Error > :: duplicate_field ("a")) ;
}
__field0 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<&'a i32>(
&mut __map,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(
&mut __map
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
let __field0 = match __field0 {
_serde::__private::Some(__field0) => __field0,
_serde::__private::None => {
match _serde::__private::de::missing_field("a") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
_serde::__private::Ok(Lifetimes::LifetimeMap { a: __field0 })
}
}
const FIELDS: &'static [&'static str] = &["a"];
_serde::de::VariantAccess::struct_variant(
__variant,
FIELDS,
__Visitor {
marker: _serde::__private::PhantomData::<Lifetimes<'a>>,
lifetime: _serde::__private::PhantomData,
},
)
}
(__Field::__field3, __variant) => {
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result
{
_serde::__private::Formatter::write_str(
__formatter,
"field identifier",
)
}
fn visit_u64<__E>(
self,
__value: u64,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"a" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"a" => _serde::__private::Ok(__Field::__field0),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(
__deserializer,
__FieldVisitor,
)
}
}
struct __Visitor<'de, 'a> {
marker: _serde::__private::PhantomData<Lifetimes<'a>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'a> _serde::de::Visitor<'de> for __Visitor<'de, 'a> {
type Value = Lifetimes<'a>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result
{
_serde::__private::Formatter::write_str(
__formatter,
"struct variant Lifetimes::NoLifetimeMap",
)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<
i32,
>(
&mut __seq
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde :: __private :: Err (_serde :: de :: Error :: invalid_length (0usize , & "struct variant Lifetimes::NoLifetimeMap with 1 element")) ;
}
};
_serde::__private::Ok(Lifetimes::NoLifetimeMap { a: __field0 })
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: _serde::__private::Option<i32> =
_serde::__private::None;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if _serde::__private::Option::is_some(&__field0) {
return _serde :: __private :: Err (< __A :: Error as _serde :: de :: Error > :: duplicate_field ("a")) ;
}
__field0 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<i32>(
&mut __map,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(
&mut __map
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
let __field0 = match __field0 {
_serde::__private::Some(__field0) => __field0,
_serde::__private::None => {
match _serde::__private::de::missing_field("a") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
_serde::__private::Ok(Lifetimes::NoLifetimeMap { a: __field0 })
}
}
const FIELDS: &'static [&'static str] = &["a"];
_serde::de::VariantAccess::struct_variant(
__variant,
FIELDS,
__Visitor {
marker: _serde::__private::PhantomData::<Lifetimes<'a>>,
lifetime: _serde::__private::PhantomData,
},
)
}
}
}
}
const VARIANTS: &'static [&'static str] = &[
"LifetimeSeq",
"NoLifetimeSeq",
"LifetimeMap",
"NoLifetimeMap",
];
_serde::Deserializer::deserialize_enum(
__deserializer,
"Lifetimes",
VARIANTS,
__Visitor {
marker: _serde::__private::PhantomData::<Lifetimes<'a>>,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};

9
test_suite/tests/expand/lifetimes.rs Normal file
View File

@ -0,0 +1,9 @@
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize)]
enum Lifetimes<'a> {
LifetimeSeq(&'a i32),
NoLifetimeSeq(i32),
LifetimeMap { a: &'a i32 },
NoLifetimeMap { a: i32 },
}

628
test_suite/tests/expand/named_map.expanded.rs Normal file
View File

@ -0,0 +1,628 @@
use serde::{Deserialize, Serialize};
struct SerNamedMap<'a, 'b, A: 'a, B: 'b, C> {
a: &'a A,
b: &'b mut B,
c: C,
}
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'a, 'b, A: 'a, B: 'b, C> _serde::Serialize for SerNamedMap<'a, 'b, A, B, C>
where
A: _serde::Serialize,
B: _serde::Serialize,
C: _serde::Serialize,
{
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
let mut __serde_state = match _serde::Serializer::serialize_struct(
__serializer,
"SerNamedMap",
false as usize + 1 + 1 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStruct::serialize_field(&mut __serde_state, "a", &self.a) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStruct::serialize_field(&mut __serde_state, "b", &self.b) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStruct::serialize_field(&mut __serde_state, "c", &self.c) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeStruct::end(__serde_state)
}
}
};
struct DeNamedMap<A, B, C> {
a: A,
b: B,
c: C,
}
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de, A, B, C> _serde::Deserialize<'de> for DeNamedMap<A, B, C>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__field1,
__field2,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "field identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
1u64 => _serde::__private::Ok(__Field::__field1),
2u64 => _serde::__private::Ok(__Field::__field2),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"a" => _serde::__private::Ok(__Field::__field0),
"b" => _serde::__private::Ok(__Field::__field1),
"c" => _serde::__private::Ok(__Field::__field2),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"a" => _serde::__private::Ok(__Field::__field0),
b"b" => _serde::__private::Ok(__Field::__field1),
b"c" => _serde::__private::Ok(__Field::__field2),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de, A, B, C>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
marker: _serde::__private::PhantomData<DeNamedMap<A, B, C>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, A, B, C> _serde::de::Visitor<'de> for __Visitor<'de, A, B, C>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
type Value = DeNamedMap<A, B, C>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "struct DeNamedMap")
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<A>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"struct DeNamedMap with 3 elements",
));
}
};
let __field1 = match match _serde::de::SeqAccess::next_element::<B>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
1usize,
&"struct DeNamedMap with 3 elements",
));
}
};
let __field2 = match match _serde::de::SeqAccess::next_element::<C>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
2usize,
&"struct DeNamedMap with 3 elements",
));
}
};
_serde::__private::Ok(DeNamedMap {
a: __field0,
b: __field1,
c: __field2,
})
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: _serde::__private::Option<A> = _serde::__private::None;
let mut __field1: _serde::__private::Option<B> = _serde::__private::None;
let mut __field2: _serde::__private::Option<C> = _serde::__private::None;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if _serde::__private::Option::is_some(&__field0) {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field("a"),
);
}
__field0 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<A>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
__Field::__field1 => {
if _serde::__private::Option::is_some(&__field1) {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field("b"),
);
}
__field1 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<B>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
__Field::__field2 => {
if _serde::__private::Option::is_some(&__field2) {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field("c"),
);
}
__field2 = _serde::__private::Some(
match _serde::de::MapAccess::next_value::<C>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
},
);
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
let __field0 = match __field0 {
_serde::__private::Some(__field0) => __field0,
_serde::__private::None => {
match _serde::__private::de::missing_field("a") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
let __field1 = match __field1 {
_serde::__private::Some(__field1) => __field1,
_serde::__private::None => {
match _serde::__private::de::missing_field("b") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
let __field2 = match __field2 {
_serde::__private::Some(__field2) => __field2,
_serde::__private::None => {
match _serde::__private::de::missing_field("c") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
}
};
_serde::__private::Ok(DeNamedMap {
a: __field0,
b: __field1,
c: __field2,
})
}
}
const FIELDS: &'static [&'static str] = &["a", "b", "c"];
_serde::Deserializer::deserialize_struct(
__deserializer,
"DeNamedMap",
FIELDS,
__Visitor {
marker: _serde::__private::PhantomData::<DeNamedMap<A, B, C>>,
lifetime: _serde::__private::PhantomData,
},
)
}
fn deserialize_in_place<__D>(
__deserializer: __D,
__place: &mut Self,
) -> _serde::__private::Result<(), __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {
__field0,
__field1,
__field2,
__ignore,
}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "field identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
0u64 => _serde::__private::Ok(__Field::__field0),
1u64 => _serde::__private::Ok(__Field::__field1),
2u64 => _serde::__private::Ok(__Field::__field2),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
"a" => _serde::__private::Ok(__Field::__field0),
"b" => _serde::__private::Ok(__Field::__field1),
"c" => _serde::__private::Ok(__Field::__field2),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
b"a" => _serde::__private::Ok(__Field::__field0),
b"b" => _serde::__private::Ok(__Field::__field1),
b"c" => _serde::__private::Ok(__Field::__field2),
_ => _serde::__private::Ok(__Field::__ignore),
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de, 'place, A: 'place, B: 'place, C: 'place>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
place: &'place mut DeNamedMap<A, B, C>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'place, A: 'place, B: 'place, C: 'place> _serde::de::Visitor<'de>
for __Visitor<'de, 'place, A, B, C>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
type Value = ();
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "struct DeNamedMap")
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.a),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"struct DeNamedMap with 3 elements",
));
}
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.b),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
1usize,
&"struct DeNamedMap with 3 elements",
));
}
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.c),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
2usize,
&"struct DeNamedMap with 3 elements",
));
}
_serde::__private::Ok(())
}
#[inline]
fn visit_map<__A>(
self,
mut __map: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::MapAccess<'de>,
{
let mut __field0: bool = false;
let mut __field1: bool = false;
let mut __field2: bool = false;
while let _serde::__private::Some(__key) =
match _serde::de::MapAccess::next_key::<__Field>(&mut __map) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
}
{
match __key {
__Field::__field0 => {
if __field0 {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field("a"),
);
}
match _serde::de::MapAccess::next_value_seed(
&mut __map,
_serde::__private::de::InPlaceSeed(&mut self.place.a),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
__field0 = true;
}
__Field::__field1 => {
if __field1 {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field("b"),
);
}
match _serde::de::MapAccess::next_value_seed(
&mut __map,
_serde::__private::de::InPlaceSeed(&mut self.place.b),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
__field1 = true;
}
__Field::__field2 => {
if __field2 {
return _serde::__private::Err(
<__A::Error as _serde::de::Error>::duplicate_field("c"),
);
}
match _serde::de::MapAccess::next_value_seed(
&mut __map,
_serde::__private::de::InPlaceSeed(&mut self.place.c),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
__field2 = true;
}
_ => {
let _ = match _serde::de::MapAccess::next_value::<
_serde::de::IgnoredAny,
>(&mut __map)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
}
}
}
if !__field0 {
self.place.a = match _serde::__private::de::missing_field("a") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
};
if !__field1 {
self.place.b = match _serde::__private::de::missing_field("b") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
};
if !__field2 {
self.place.c = match _serde::__private::de::missing_field("c") {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
};
_serde::__private::Ok(())
}
}
const FIELDS: &'static [&'static str] = &["a", "b", "c"];
_serde::Deserializer::deserialize_struct(
__deserializer,
"DeNamedMap",
FIELDS,
__Visitor {
place: __place,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};

15
test_suite/tests/expand/named_map.rs Normal file
View File

@ -0,0 +1,15 @@
use serde::{Deserialize, Serialize};
#[derive(Serialize)]
struct SerNamedMap<'a, 'b, A: 'a, B: 'b, C> {
a: &'a A,
b: &'b mut B,
c: C,
}
#[derive(Deserialize)]
struct DeNamedMap<A, B, C> {
a: A,
b: B,
c: C,
}

259
test_suite/tests/expand/named_tuple.expanded.rs Normal file
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@ -0,0 +1,259 @@
use serde::{Deserialize, Serialize};
struct SerNamedTuple<'a, 'b, A: 'a, B: 'b, C>(&'a A, &'b mut B, C);
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'a, 'b, A: 'a, B: 'b, C> _serde::Serialize for SerNamedTuple<'a, 'b, A, B, C>
where
A: _serde::Serialize,
B: _serde::Serialize,
C: _serde::Serialize,
{
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
let mut __serde_state = match _serde::Serializer::serialize_tuple_struct(
__serializer,
"SerNamedTuple",
0 + 1 + 1 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleStruct::serialize_field(&mut __serde_state, &self.0) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleStruct::serialize_field(&mut __serde_state, &self.1) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleStruct::serialize_field(&mut __serde_state, &self.2) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeTupleStruct::end(__serde_state)
}
}
};
struct DeNamedTuple<A, B, C>(A, B, C);
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de, A, B, C> _serde::Deserialize<'de> for DeNamedTuple<A, B, C>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
struct __Visitor<'de, A, B, C>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
marker: _serde::__private::PhantomData<DeNamedTuple<A, B, C>>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, A, B, C> _serde::de::Visitor<'de> for __Visitor<'de, A, B, C>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
type Value = DeNamedTuple<A, B, C>;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(
__formatter,
"tuple struct DeNamedTuple",
)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
let __field0 = match match _serde::de::SeqAccess::next_element::<A>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"tuple struct DeNamedTuple with 3 elements",
));
}
};
let __field1 = match match _serde::de::SeqAccess::next_element::<B>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
1usize,
&"tuple struct DeNamedTuple with 3 elements",
));
}
};
let __field2 = match match _serde::de::SeqAccess::next_element::<C>(&mut __seq)
{
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
_serde::__private::Some(__value) => __value,
_serde::__private::None => {
return _serde::__private::Err(_serde::de::Error::invalid_length(
2usize,
&"tuple struct DeNamedTuple with 3 elements",
));
}
};
_serde::__private::Ok(DeNamedTuple(__field0, __field1, __field2))
}
}
_serde::Deserializer::deserialize_tuple_struct(
__deserializer,
"DeNamedTuple",
3usize,
__Visitor {
marker: _serde::__private::PhantomData::<DeNamedTuple<A, B, C>>,
lifetime: _serde::__private::PhantomData,
},
)
}
fn deserialize_in_place<__D>(
__deserializer: __D,
__place: &mut Self,
) -> _serde::__private::Result<(), __D::Error>
where
__D: _serde::Deserializer<'de>,
{
struct __Visitor<'de, 'place, A: 'place, B: 'place, C: 'place>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
place: &'place mut DeNamedTuple<A, B, C>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de, 'place, A: 'place, B: 'place, C: 'place> _serde::de::Visitor<'de>
for __Visitor<'de, 'place, A, B, C>
where
A: _serde::Deserialize<'de>,
B: _serde::Deserialize<'de>,
C: _serde::Deserialize<'de>,
{
type Value = ();
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(
__formatter,
"tuple struct DeNamedTuple",
)
}
#[inline]
fn visit_seq<__A>(
self,
mut __seq: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::SeqAccess<'de>,
{
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.0),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
0usize,
&"tuple struct DeNamedTuple with 3 elements",
));
}
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.1),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
1usize,
&"tuple struct DeNamedTuple with 3 elements",
));
}
if let _serde::__private::None = match _serde::de::SeqAccess::next_element_seed(
&mut __seq,
_serde::__private::de::InPlaceSeed(&mut self.place.2),
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
} {
return _serde::__private::Err(_serde::de::Error::invalid_length(
2usize,
&"tuple struct DeNamedTuple with 3 elements",
));
}
_serde::__private::Ok(())
}
}
_serde::Deserializer::deserialize_tuple_struct(
__deserializer,
"DeNamedTuple",
3usize,
__Visitor {
place: __place,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};

7
test_suite/tests/expand/named_tuple.rs Normal file
View File

@ -0,0 +1,7 @@
use serde::{Deserialize, Serialize};
#[derive(Serialize)]
struct SerNamedTuple<'a, 'b, A: 'a, B: 'b, C>(&'a A, &'b mut B, C);
#[derive(Deserialize)]
struct DeNamedTuple<A, B, C>(A, B, C);

52
test_suite/tests/expand/named_unit.expanded.rs Normal file
View File

@ -0,0 +1,52 @@
use serde::{Deserialize, Serialize};
struct NamedUnit;
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl _serde::Serialize for NamedUnit {
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
_serde::Serializer::serialize_unit_struct(__serializer, "NamedUnit")
}
}
};
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de> _serde::Deserialize<'de> for NamedUnit {
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
struct __Visitor;
impl<'de> _serde::de::Visitor<'de> for __Visitor {
type Value = NamedUnit;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "unit struct NamedUnit")
}
#[inline]
fn visit_unit<__E>(self) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
_serde::__private::Ok(NamedUnit)
}
}
_serde::Deserializer::deserialize_unit_struct(__deserializer, "NamedUnit", __Visitor)
}
}
};

4
test_suite/tests/expand/named_unit.rs Normal file
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@ -0,0 +1,4 @@
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize)]
struct NamedUnit;

271
test_suite/tests/expand/ser_enum.expanded.rs Normal file
View File

@ -0,0 +1,271 @@
use serde::Serialize;
enum SerEnum<'a, B: 'a, C: 'a, D>
where
D: 'a,
{
Unit,
Seq(i8, B, &'a C, &'a mut D),
Map { a: i8, b: B, c: &'a C, d: &'a mut D },
_Unit2,
_Seq2(i8, B, &'a C, &'a mut D),
_Map2 { a: i8, b: B, c: &'a C, d: &'a mut D },
}
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'a, B: 'a, C: 'a, D> _serde::Serialize for SerEnum<'a, B, C, D>
where
D: 'a,
B: _serde::Serialize,
C: _serde::Serialize,
D: _serde::Serialize,
{
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
match *self {
SerEnum::Unit => _serde::Serializer::serialize_unit_variant(
__serializer,
"SerEnum",
0u32,
"Unit",
),
SerEnum::Seq(ref __field0, ref __field1, ref __field2, ref __field3) => {
let mut __serde_state = match _serde::Serializer::serialize_tuple_variant(
__serializer,
"SerEnum",
1u32,
"Seq",
0 + 1 + 1 + 1 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field0,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field2,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field3,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeTupleVariant::end(__serde_state)
}
SerEnum::Map {
ref a,
ref b,
ref c,
ref d,
} => {
let mut __serde_state = match _serde::Serializer::serialize_struct_variant(
__serializer,
"SerEnum",
2u32,
"Map",
0 + 1 + 1 + 1 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"a",
a,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"b",
b,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"c",
c,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"d",
d,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeStructVariant::end(__serde_state)
}
SerEnum::_Unit2 => _serde::Serializer::serialize_unit_variant(
__serializer,
"SerEnum",
3u32,
"_Unit2",
),
SerEnum::_Seq2(ref __field0, ref __field1, ref __field2, ref __field3) => {
let mut __serde_state = match _serde::Serializer::serialize_tuple_variant(
__serializer,
"SerEnum",
4u32,
"_Seq2",
0 + 1 + 1 + 1 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field0,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field2,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeTupleVariant::serialize_field(
&mut __serde_state,
__field3,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeTupleVariant::end(__serde_state)
}
SerEnum::_Map2 {
ref a,
ref b,
ref c,
ref d,
} => {
let mut __serde_state = match _serde::Serializer::serialize_struct_variant(
__serializer,
"SerEnum",
5u32,
"_Map2",
0 + 1 + 1 + 1 + 1,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"a",
a,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"b",
b,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"c",
c,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
match _serde::ser::SerializeStructVariant::serialize_field(
&mut __serde_state,
"d",
d,
) {
_serde::__private::Ok(__val) => __val,
_serde::__private::Err(__err) => {
return _serde::__private::Err(__err);
}
};
_serde::ser::SerializeStructVariant::end(__serde_state)
}
}
}
}
};

16
test_suite/tests/expand/ser_enum.rs Normal file
View File

@ -0,0 +1,16 @@
use serde::Serialize;
#[derive(Serialize)]
enum SerEnum<'a, B: 'a, C: 'a, D>
where
D: 'a,
{
Unit,
Seq(i8, B, &'a C, &'a mut D),
Map { a: i8, b: B, c: &'a C, d: &'a mut D },
// Make sure we can support more than one variant.
_Unit2,
_Seq2(i8, B, &'a C, &'a mut D),
_Map2 { a: i8, b: B, c: &'a C, d: &'a mut D },
}

132
test_suite/tests/expand/void.expanded.rs Normal file
View File

@ -0,0 +1,132 @@
use serde::{Deserialize, Serialize};
enum Void {}
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl _serde::Serialize for Void {
fn serialize<__S>(
&self,
__serializer: __S,
) -> _serde::__private::Result<__S::Ok, __S::Error>
where
__S: _serde::Serializer,
{
match *self {}
}
}
};
#[doc(hidden)]
#[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
const _: () = {
#[allow(unused_extern_crates, clippy::useless_attribute)]
extern crate serde as _serde;
#[automatically_derived]
impl<'de> _serde::Deserialize<'de> for Void {
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
#[allow(non_camel_case_types)]
enum __Field {}
struct __FieldVisitor;
impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
type Value = __Field;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "variant identifier")
}
fn visit_u64<__E>(self, __value: u64) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
_ => _serde::__private::Err(_serde::de::Error::invalid_value(
_serde::de::Unexpected::Unsigned(__value),
&"variant index 0 <= i < 0",
)),
}
}
fn visit_str<__E>(
self,
__value: &str,
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
_ => _serde::__private::Err(_serde::de::Error::unknown_variant(
__value, VARIANTS,
)),
}
}
fn visit_bytes<__E>(
self,
__value: &[u8],
) -> _serde::__private::Result<Self::Value, __E>
where
__E: _serde::de::Error,
{
match __value {
_ => {
let __value = &_serde::__private::from_utf8_lossy(__value);
_serde::__private::Err(_serde::de::Error::unknown_variant(
__value, VARIANTS,
))
}
}
}
}
impl<'de> _serde::Deserialize<'de> for __Field {
#[inline]
fn deserialize<__D>(
__deserializer: __D,
) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<'de>,
{
_serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
}
}
struct __Visitor<'de> {
marker: _serde::__private::PhantomData<Void>,
lifetime: _serde::__private::PhantomData<&'de ()>,
}
impl<'de> _serde::de::Visitor<'de> for __Visitor<'de> {
type Value = Void;
fn expecting(
&self,
__formatter: &mut _serde::__private::Formatter,
) -> _serde::__private::fmt::Result {
_serde::__private::Formatter::write_str(__formatter, "enum Void")
}
fn visit_enum<__A>(
self,
__data: __A,
) -> _serde::__private::Result<Self::Value, __A::Error>
where
__A: _serde::de::EnumAccess<'de>,
{
_serde::__private::Result::map(
_serde::de::EnumAccess::variant::<__Field>(__data),
|(__impossible, _)| match __impossible {},
)
}
}
const VARIANTS: &'static [&'static str] = &[];
_serde::Deserializer::deserialize_enum(
__deserializer,
"Void",
VARIANTS,
__Visitor {
marker: _serde::__private::PhantomData::<Void>,
lifetime: _serde::__private::PhantomData,
},
)
}
}
};

4
test_suite/tests/expand/void.rs Normal file
View File

@ -0,0 +1,4 @@
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize)]
enum Void {}

8
test_suite/tests/expandtest.rs Normal file
View File

@ -0,0 +1,8 @@
#[cfg_attr(target_os = "emscripten", ignore)]
#[cfg_attr(not(expandtest), ignore)]
#[rustversion::attr(not(nightly), ignore)]
#[allow(unused_attributes)]
#[test]
fn expandtest() {
macrotest::expand("tests/expand/*.rs");
}

2
test_suite/tests/macros/mod.rs
View File

@ -1,5 +1,3 @@
#![allow(unused_macro_rules)]
use serde_test::Token;
use std::iter;

3
test_suite/tests/regression.rs
View File

@ -1,3 +0,0 @@
mod regression {
automod::dir!("tests/regression");
}

43
test_suite/tests/regression/issue2371.rs
View File

@ -1,43 +0,0 @@
use serde_derive::Deserialize;
#[derive(Deserialize)]
pub struct Nested;
#[derive(Deserialize)]
pub enum ExternallyTagged {
Flatten {
#[serde(flatten)]
nested: Nested,
string: &'static str,
},
}
#[derive(Deserialize)]
#[serde(tag = "tag")]
pub enum InternallyTagged {
Flatten {
#[serde(flatten)]
nested: Nested,
string: &'static str,
},
}
#[derive(Deserialize)]
#[serde(tag = "tag", content = "content")]
pub enum AdjacentlyTagged {
Flatten {
#[serde(flatten)]
nested: Nested,
string: &'static str,
},
}
#[derive(Deserialize)]
#[serde(untagged)]
pub enum UntaggedWorkaround {
Flatten {
#[serde(flatten)]
nested: Nested,
string: &'static str,
},
}

11
test_suite/tests/regression/issue2409.rs
View File

@ -1,11 +0,0 @@
use serde_derive::Deserialize;
macro_rules! bug {
($serde_path:literal) => {
#[derive(Deserialize)]
#[serde(crate = $serde_path)]
pub struct Struct;
};
}
bug!("serde");

5
test_suite/tests/regression/issue2415.rs
View File

@ -1,5 +0,0 @@
use serde_derive::Serialize;
#[derive(Serialize)]
#[serde()]
pub struct S;

1128
test_suite/tests/test_annotations.rs
View File

File diff suppressed because it is too large Load Diff

39
test_suite/tests/test_borrow.rs
View File

@ -1,13 +1,8 @@
#![allow(
clippy::derive_partial_eq_without_eq,
clippy::items_after_statements,
clippy::used_underscore_binding
)]
#![allow(clippy::items_after_statements, clippy::used_underscore_binding)]
use serde::de::value::{BorrowedStrDeserializer, MapDeserializer};
use serde::de::{Deserialize, Deserializer, IntoDeserializer};
use serde_derive::Deserialize;
use serde::{Deserialize, Deserializer};
use serde_test::{assert_de_tokens, assert_de_tokens_error, Token};
use std::borrow::Cow;
#[test]
@ -131,22 +126,20 @@ fn test_cow() {
borrowed: Cow<'b, str>,
}
struct BorrowedStr(&'static str);
let tokens = &[
Token::Struct {
name: "Cows",
len: 2,
},
Token::Str("copied"),
Token::BorrowedStr("copied"),
Token::Str("borrowed"),
Token::BorrowedStr("borrowed"),
Token::StructEnd,
];
impl<'de> IntoDeserializer<'de> for BorrowedStr {
type Deserializer = BorrowedStrDeserializer<'de, serde::de::value::Error>;
fn into_deserializer(self) -> Self::Deserializer {
BorrowedStrDeserializer::new(self.0)
}
}
let de = MapDeserializer::new(IntoIterator::into_iter([
("copied", BorrowedStr("copied")),
("borrowed", BorrowedStr("borrowed")),
]));
let cows = Cows::deserialize(de).unwrap();
let mut de = serde_test::Deserializer::new(tokens);
let cows = Cows::deserialize(&mut de).unwrap();
match cows.copied {
Cow::Owned(ref s) if s == "copied" => {}

132
test_suite/tests/test_de.rs
View File

@ -1,25 +1,17 @@
#![allow(
clippy::cast_lossless,
clippy::decimal_literal_representation,
clippy::derive_partial_eq_without_eq,
clippy::empty_enum,
clippy::manual_assert,
clippy::needless_pass_by_value,
clippy::uninlined_format_args,
clippy::unreadable_literal
)]
#![cfg_attr(feature = "unstable", feature(never_type))]
use fnv::FnvHasher;
use serde::de::value::{F32Deserializer, F64Deserializer};
use serde::de::{Deserialize, DeserializeOwned, Deserializer, IntoDeserializer};
use serde_derive::Deserialize;
use serde_test::{assert_de_tokens, Configure, Token};
use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
use std::default::Default;
use std::ffi::{CStr, CString, OsString};
use std::fmt::Debug;
use std::iter;
use std::net;
use std::num::{
NonZeroI128, NonZeroI16, NonZeroI32, NonZeroI64, NonZeroI8, NonZeroIsize, NonZeroU128,
@ -32,11 +24,17 @@ use std::sync::atomic::{
AtomicBool, AtomicI16, AtomicI32, AtomicI8, AtomicIsize, AtomicU16, AtomicU32, AtomicU8,
AtomicUsize, Ordering,
};
#[cfg(target_arch = "x86_64")]
use std::sync::atomic::{AtomicI64, AtomicU64};
use std::sync::{Arc, Weak as ArcWeak};
use std::time::{Duration, UNIX_EPOCH};
#[cfg(target_arch = "x86_64")]
use std::sync::atomic::{AtomicI64, AtomicU64};
use fnv::FnvHasher;
use serde::de::DeserializeOwned;
use serde::{Deserialize, Deserializer};
use serde_test::{assert_de_tokens, Configure, Token};
#[macro_use]
mod macros;
@ -45,9 +43,6 @@ mod macros;
#[derive(Copy, Clone, PartialEq, Debug, Deserialize)]
struct UnitStruct;
#[derive(Copy, Clone, PartialEq, Debug, Deserialize)]
struct GenericUnitStruct<const N: u8>;
#[derive(PartialEq, Debug, Deserialize)]
struct NewtypeStruct(i32);
@ -202,11 +197,12 @@ fn assert_de_tokens_ignore(ignorable_tokens: &[Token]) {
]
.into_iter()
.chain(ignorable_tokens.iter().copied())
.chain(iter::once(Token::MapEnd))
.chain(vec![Token::MapEnd].into_iter())
.collect();
let expected = IgnoreBase { a: 1 };
assert_de_tokens(&expected, &concated_tokens);
let mut de = serde_test::Deserializer::new(&concated_tokens);
let base = IgnoreBase::deserialize(&mut de).unwrap();
assert_eq!(base, IgnoreBase { a: 1 });
}
//////////////////////////////////////////////////////////////////////////
@ -833,26 +829,6 @@ fn test_f64() {
test(1.11, &[Token::F64(1.11)]);
}
#[test]
fn test_nan() {
let f32_deserializer = F32Deserializer::<serde::de::value::Error>::new;
let f64_deserializer = F64Deserializer::<serde::de::value::Error>::new;
let pos_f32_nan = f32_deserializer(f32::NAN.copysign(1.0));
let pos_f64_nan = f64_deserializer(f64::NAN.copysign(1.0));
assert!(f32::deserialize(pos_f32_nan).unwrap().is_sign_positive());
assert!(f32::deserialize(pos_f64_nan).unwrap().is_sign_positive());
assert!(f64::deserialize(pos_f32_nan).unwrap().is_sign_positive());
assert!(f64::deserialize(pos_f64_nan).unwrap().is_sign_positive());
let neg_f32_nan = f32_deserializer(f32::NAN.copysign(-1.0));
let neg_f64_nan = f64_deserializer(f64::NAN.copysign(-1.0));
assert!(f32::deserialize(neg_f32_nan).unwrap().is_sign_negative());
assert!(f32::deserialize(neg_f64_nan).unwrap().is_sign_negative());
assert!(f64::deserialize(neg_f32_nan).unwrap().is_sign_negative());
assert!(f64::deserialize(neg_f64_nan).unwrap().is_sign_negative());
}
#[test]
fn test_char() {
test('a', &[Token::Char('a')]);
@ -905,17 +881,6 @@ fn test_unit_struct() {
test(UnitStruct, &[Token::UnitStruct { name: "UnitStruct" }]);
}
#[test]
fn test_generic_unit_struct() {
test(GenericUnitStruct::<8>, &[Token::Unit]);
test(
GenericUnitStruct::<8>,
&[Token::UnitStruct {
name: "GenericUnitStruct",
}],
);
}
#[test]
fn test_newtype_struct() {
test(
@ -1898,46 +1863,6 @@ fn test_range_inclusive() {
);
}
#[test]
fn test_range_from() {
test(
1u32..,
&[
Token::Struct {
name: "RangeFrom",
len: 1,
},
Token::Str("start"),
Token::U32(1),
Token::StructEnd,
],
);
test(
1u32..,
&[Token::Seq { len: Some(1) }, Token::U32(1), Token::SeqEnd],
);
}
#[test]
fn test_range_to() {
test(
..2u32,
&[
Token::Struct {
name: "RangeTo",
len: 1,
},
Token::Str("end"),
Token::U32(2),
Token::StructEnd,
],
);
test(
..2u32,
&[Token::Seq { len: Some(1) }, Token::U32(2), Token::SeqEnd],
);
}
#[test]
fn test_bound() {
test(
@ -2318,34 +2243,39 @@ fn test_cstr() {
#[test]
fn test_atomics() {
fn test<L, A, T>(load: L, val: T)
fn test<L, A, T>(load: L, val: T, token: Token)
where
L: Fn(&A, Ordering) -> T,
A: DeserializeOwned,
T: PartialEq + Debug + Copy + for<'de> IntoDeserializer<'de>,
T: PartialEq + Debug,
{
match A::deserialize(val.into_deserializer()) {
let tokens = &[token];
let mut de = serde_test::Deserializer::new(tokens);
match A::deserialize(&mut de) {
Ok(v) => {
let loaded = load(&v, Ordering::Relaxed);
assert_eq!(val, loaded);
}
Err(e) => panic!("tokens failed to deserialize: {}", e),
};
if de.remaining() > 0 {
panic!("{} remaining tokens", de.remaining());
}
}
test(AtomicBool::load, true);
test(AtomicI8::load, -127i8);
test(AtomicI16::load, -510i16);
test(AtomicI32::load, -131072i32);
test(AtomicIsize::load, -131072isize);
test(AtomicU8::load, 127u8);
test(AtomicU16::load, 510u16);
test(AtomicU32::load, 131072u32);
test(AtomicUsize::load, 131072usize);
test(AtomicBool::load, true, Token::Bool(true));
test(AtomicI8::load, -127, Token::I8(-127i8));
test(AtomicI16::load, -510, Token::I16(-510i16));
test(AtomicI32::load, -131072, Token::I32(-131072i32));
test(AtomicIsize::load, -131072isize, Token::I32(-131072));
test(AtomicU8::load, 127, Token::U8(127u8));
test(AtomicU16::load, 510u16, Token::U16(510u16));
test(AtomicU32::load, 131072u32, Token::U32(131072u32));
test(AtomicUsize::load, 131072usize, Token::U32(131072));
#[cfg(target_arch = "x86_64")]
{
test(AtomicI64::load, -8589934592i64);
test(AtomicU64::load, 8589934592u64);
test(AtomicI64::load, -8589934592, Token::I64(-8589934592));
test(AtomicU64::load, 8589934592u64, Token::U64(8589934592));
}
}

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