Vendor dependencies

This commit is contained in:
2026-08-01 16:11:49 +03:00
parent 7f139a0241
commit 6b5e7f0f8b
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# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
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5. Submission of Contributions. Unless You explicitly state otherwise,
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the Work or Derivative Works thereof, You may choose to offer,
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on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
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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.
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Unless required by applicable law or agreed to in writing, software
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+19
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@@ -0,0 +1,19 @@
Copyright (c) Individual contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
+28
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# toml
[![Latest Version](https://img.shields.io/crates/v/toml.svg)](https://crates.io/crates/toml)
[![Documentation](https://docs.rs/toml/badge.svg)](https://docs.rs/toml)
A [serde]-compatible [TOML][toml] decoder and encoder for Rust.
For format-preserving editing or finer control over output, see [toml_edit]
[serde]: https://serde.rs/
[toml]: https://github.com/toml-lang/toml
[toml_edit]: https://docs.rs/toml_edit
## License
Licensed under either of
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
at your option.
### Contribution
Unless you explicitly state otherwise, any contribution intentionally
submitted for inclusion in the work by you, as defined in the Apache-2.0
license, shall be dual-licensed as above, without any additional terms or
conditions.
+54
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@@ -0,0 +1,54 @@
//! An example showing off the usage of `Deserialize` to automatically decode
//! TOML into a Rust `struct`
#![deny(warnings)]
#![allow(dead_code)]
use serde::Deserialize;
/// This is what we're going to decode into. Each field is optional, meaning
/// that it doesn't have to be present in TOML.
#[derive(Debug, Deserialize)]
struct Config {
global_string: Option<String>,
global_integer: Option<u64>,
server: Option<ServerConfig>,
peers: Option<Vec<PeerConfig>>,
}
/// Sub-structs are decoded from tables, so this will decode from the `[server]`
/// table.
///
/// Again, each field is optional, meaning they don't have to be present.
#[derive(Debug, Deserialize)]
struct ServerConfig {
ip: Option<String>,
port: Option<u64>,
}
#[derive(Debug, Deserialize)]
struct PeerConfig {
ip: Option<String>,
port: Option<u64>,
}
fn main() {
let toml_str = r#"
global_string = "test"
global_integer = 5
[server]
ip = "127.0.0.1"
port = 80
[[peers]]
ip = "127.0.0.1"
port = 8080
[[peers]]
ip = "127.0.0.1"
"#;
let decoded: Config = toml::from_str(toml_str).unwrap();
println!("{decoded:#?}");
}
@@ -0,0 +1,45 @@
//! An example showing off the usage of `Deserialize` to automatically decode
//! TOML into a Rust `struct`, with enums.
#![deny(warnings)]
#![allow(dead_code)]
use serde::Deserialize;
/// This is what we're going to decode into.
#[derive(Debug, Deserialize)]
struct Config {
plain: MyEnum,
plain_table: MyEnum,
tuple: MyEnum,
#[serde(rename = "struct")]
structv: MyEnum,
newtype: MyEnum,
my_enum: Vec<MyEnum>,
}
#[derive(Debug, Deserialize)]
enum MyEnum {
Plain,
Tuple(i64, bool),
NewType(String),
Struct { value: i64 },
}
fn main() {
let toml_str = r#"
plain = "Plain"
plain_table = { Plain = {} }
tuple = { Tuple = { 0 = 123, 1 = true } }
struct = { Struct = { value = 123 } }
newtype = { NewType = "value" }
my_enum = [
{ Plain = {} },
{ Tuple = { 0 = 123, 1 = true } },
{ NewType = "value" },
{ Struct = { value = 123 } }
]"#;
let decoded: Config = toml::from_str(toml_str).unwrap();
println!("{decoded:#?}");
}
+43
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use std::env;
use std::io;
use std::io::prelude::*;
use serde_json::Value as Json;
use toml::Value as Toml;
fn main() {
let mut args = env::args();
let input = if args.len() > 1 {
let name = args.nth(1).unwrap();
std::fs::read_to_string(name).unwrap()
} else {
let mut input = String::new();
io::stdin().read_to_string(&mut input).unwrap();
input
};
match input.parse() {
Ok(toml) => {
let json = convert(toml);
println!("{}", serde_json::to_string_pretty(&json).unwrap());
}
Err(error) => println!("failed to parse TOML: {error}"),
}
}
fn convert(toml: Toml) -> Json {
match toml {
Toml::String(s) => Json::String(s),
Toml::Integer(i) => Json::Number(i.into()),
Toml::Float(f) => {
let n = serde_json::Number::from_f64(f).expect("float infinite and nan not allowed");
Json::Number(n)
}
Toml::Boolean(b) => Json::Bool(b),
Toml::Array(arr) => Json::Array(arr.into_iter().map(convert).collect()),
Toml::Table(table) => {
Json::Object(table.into_iter().map(|(k, v)| (k, convert(v))).collect())
}
Toml::Datetime(dt) => Json::String(dt.to_string()),
}
}
+313
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//! Deserializing TOML into Rust structures.
//!
//! This module contains all the Serde support for deserializing TOML documents
//! into Rust structures. Note that some top-level functions here are also
//! provided at the top of the crate.
/// Deserializes a string into a type.
///
/// This function will attempt to interpret `s` as a TOML document and
/// deserialize `T` from the document.
///
/// To deserializes TOML values, instead of documents, see [`ValueDeserializer`].
///
/// # Examples
///
/// ```
/// use serde::Deserialize;
///
/// #[derive(Deserialize)]
/// struct Config {
/// title: String,
/// owner: Owner,
/// }
///
/// #[derive(Deserialize)]
/// struct Owner {
/// name: String,
/// }
///
/// let config: Config = toml::from_str(r#"
/// title = 'TOML Example'
///
/// [owner]
/// name = 'Lisa'
/// "#).unwrap();
///
/// assert_eq!(config.title, "TOML Example");
/// assert_eq!(config.owner.name, "Lisa");
/// ```
#[cfg(feature = "parse")]
pub fn from_str<T>(s: &'_ str) -> Result<T, Error>
where
T: serde::de::DeserializeOwned,
{
T::deserialize(Deserializer::new(s))
}
/// Errors that can occur when deserializing a type.
#[derive(PartialEq, Eq, Clone)]
pub struct Error {
inner: crate::edit::de::Error,
}
impl Error {
fn new(inner: crate::edit::de::Error) -> Self {
Self { inner }
}
pub(crate) fn add_key(&mut self, key: String) {
self.inner.add_key(key);
}
/// What went wrong
pub fn message(&self) -> &str {
self.inner.message()
}
/// The start/end index into the original document where the error occurred
#[cfg(feature = "parse")]
pub fn span(&self) -> Option<std::ops::Range<usize>> {
self.inner.span()
}
}
impl serde::de::Error for Error {
fn custom<T>(msg: T) -> Self
where
T: std::fmt::Display,
{
Error::new(crate::edit::de::Error::custom(msg))
}
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
self.inner.fmt(f)
}
}
impl std::fmt::Debug for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
self.inner.fmt(f)
}
}
impl std::error::Error for Error {}
/// Deserialization TOML document
///
/// To deserializes TOML values, instead of documents, see [`ValueDeserializer`].
#[cfg(feature = "parse")]
pub struct Deserializer<'a> {
input: &'a str,
}
#[cfg(feature = "parse")]
impl<'a> Deserializer<'a> {
/// Deserialization implementation for TOML.
pub fn new(input: &'a str) -> Self {
Self { input }
}
}
#[cfg(feature = "parse")]
impl<'de> serde::Deserializer<'de> for Deserializer<'_> {
type Error = Error;
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: serde::de::Visitor<'de>,
{
let inner = toml_edit::de::Deserializer::parse(self.input).map_err(Error::new)?;
inner.deserialize_any(visitor).map_err(Error::new)
}
// `None` is interpreted as a missing field so be sure to implement `Some`
// as a present field.
fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Error>
where
V: serde::de::Visitor<'de>,
{
let inner = toml_edit::de::Deserializer::parse(self.input).map_err(Error::new)?;
inner.deserialize_option(visitor).map_err(Error::new)
}
fn deserialize_newtype_struct<V>(
self,
name: &'static str,
visitor: V,
) -> Result<V::Value, Error>
where
V: serde::de::Visitor<'de>,
{
let inner = toml_edit::de::Deserializer::parse(self.input).map_err(Error::new)?;
inner
.deserialize_newtype_struct(name, visitor)
.map_err(Error::new)
}
fn deserialize_struct<V>(
self,
name: &'static str,
fields: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Error>
where
V: serde::de::Visitor<'de>,
{
let inner = toml_edit::de::Deserializer::parse(self.input).map_err(Error::new)?;
inner
.deserialize_struct(name, fields, visitor)
.map_err(Error::new)
}
// Called when the type to deserialize is an enum, as opposed to a field in the type.
fn deserialize_enum<V>(
self,
name: &'static str,
variants: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Error>
where
V: serde::de::Visitor<'de>,
{
let inner = toml_edit::de::Deserializer::parse(self.input).map_err(Error::new)?;
inner
.deserialize_enum(name, variants, visitor)
.map_err(Error::new)
}
serde::forward_to_deserialize_any! {
bool u8 u16 u32 u64 i8 i16 i32 i64 f32 f64 char str string seq
bytes byte_buf map unit
ignored_any unit_struct tuple_struct tuple identifier
}
}
/// Deserialization TOML [value][crate::Value]
///
/// # Example
///
/// ```
/// use serde::Deserialize;
///
/// #[derive(Deserialize)]
/// struct Config {
/// title: String,
/// owner: Owner,
/// }
///
/// #[derive(Deserialize)]
/// struct Owner {
/// name: String,
/// }
///
/// let config = Config::deserialize(toml::de::ValueDeserializer::new(
/// r#"{ title = 'TOML Example', owner = { name = 'Lisa' } }"#
/// )).unwrap();
///
/// assert_eq!(config.title, "TOML Example");
/// assert_eq!(config.owner.name, "Lisa");
/// ```
#[cfg(feature = "parse")]
pub struct ValueDeserializer<'a> {
input: &'a str,
}
#[cfg(feature = "parse")]
impl<'a> ValueDeserializer<'a> {
/// Deserialization implementation for TOML.
pub fn new(input: &'a str) -> Self {
Self { input }
}
}
#[cfg(feature = "parse")]
impl<'de> serde::Deserializer<'de> for ValueDeserializer<'_> {
type Error = Error;
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: serde::de::Visitor<'de>,
{
let inner = self
.input
.parse::<toml_edit::de::ValueDeserializer>()
.map_err(Error::new)?;
inner.deserialize_any(visitor).map_err(Error::new)
}
// `None` is interpreted as a missing field so be sure to implement `Some`
// as a present field.
fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Error>
where
V: serde::de::Visitor<'de>,
{
let inner = self
.input
.parse::<toml_edit::de::ValueDeserializer>()
.map_err(Error::new)?;
inner.deserialize_option(visitor).map_err(Error::new)
}
fn deserialize_newtype_struct<V>(
self,
name: &'static str,
visitor: V,
) -> Result<V::Value, Error>
where
V: serde::de::Visitor<'de>,
{
let inner = self
.input
.parse::<toml_edit::de::ValueDeserializer>()
.map_err(Error::new)?;
inner
.deserialize_newtype_struct(name, visitor)
.map_err(Error::new)
}
fn deserialize_struct<V>(
self,
name: &'static str,
fields: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Error>
where
V: serde::de::Visitor<'de>,
{
let inner = self
.input
.parse::<toml_edit::de::ValueDeserializer>()
.map_err(Error::new)?;
inner
.deserialize_struct(name, fields, visitor)
.map_err(Error::new)
}
// Called when the type to deserialize is an enum, as opposed to a field in the type.
fn deserialize_enum<V>(
self,
name: &'static str,
variants: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Error>
where
V: serde::de::Visitor<'de>,
{
let inner = self
.input
.parse::<toml_edit::de::ValueDeserializer>()
.map_err(Error::new)?;
inner
.deserialize_enum(name, variants, visitor)
.map_err(Error::new)
}
serde::forward_to_deserialize_any! {
bool u8 u16 u32 u64 i8 i16 i32 i64 f32 f64 char str string seq
bytes byte_buf map unit
ignored_any unit_struct tuple_struct tuple identifier
}
}
+91
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#[cfg(feature = "parse")]
pub(crate) mod de {
pub(crate) use toml_edit::de::Error;
}
#[cfg(not(feature = "parse"))]
pub(crate) mod de {
/// Errors that can occur when deserializing a type.
#[derive(Debug, Clone, PartialEq, Eq)]
pub(crate) struct Error {
inner: String,
}
impl Error {
/// Add key while unwinding
pub(crate) fn add_key(&mut self, _key: String) {}
/// What went wrong
pub(crate) fn message(&self) -> &str {
self.inner.as_str()
}
}
impl serde::de::Error for Error {
fn custom<T>(msg: T) -> Self
where
T: std::fmt::Display,
{
Error {
inner: msg.to_string(),
}
}
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
self.inner.fmt(f)
}
}
impl std::error::Error for Error {}
}
#[cfg(feature = "display")]
pub(crate) mod ser {
pub(crate) use toml_edit::ser::Error;
}
#[cfg(not(feature = "display"))]
pub(crate) mod ser {
#[derive(Debug, Clone, PartialEq, Eq)]
#[non_exhaustive]
pub(crate) enum Error {
UnsupportedType(Option<&'static str>),
UnsupportedNone,
KeyNotString,
Custom(String),
}
impl Error {
pub(crate) fn custom<T>(msg: T) -> Self
where
T: std::fmt::Display,
{
Error::Custom(msg.to_string())
}
}
impl serde::ser::Error for Error {
fn custom<T>(msg: T) -> Self
where
T: std::fmt::Display,
{
Self::custom(msg)
}
}
impl std::fmt::Display for Error {
fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::UnsupportedType(Some(t)) => write!(formatter, "unsupported {t} type"),
Self::UnsupportedType(None) => write!(formatter, "unsupported rust type"),
Self::UnsupportedNone => "unsupported None value".fmt(formatter),
Self::KeyNotString => "map key was not a string".fmt(formatter),
Self::Custom(s) => s.fmt(formatter),
}
}
}
impl std::error::Error for Error {}
}
+66
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#[derive(Copy, Clone, Default)]
pub(crate) struct DocumentFormatter {
pub(crate) multiline_array: bool,
is_value: bool,
}
impl toml_edit::visit_mut::VisitMut for DocumentFormatter {
fn visit_document_mut(&mut self, node: &mut toml_edit::DocumentMut) {
toml_edit::visit_mut::visit_document_mut(self, node);
}
fn visit_item_mut(&mut self, node: &mut toml_edit::Item) {
let is_parent_value = self.is_value;
if !is_parent_value {
let other = std::mem::take(node);
let other = match other.into_table().map(toml_edit::Item::Table) {
Ok(i) => i,
Err(i) => i,
};
let other = match other
.into_array_of_tables()
.map(toml_edit::Item::ArrayOfTables)
{
Ok(i) => i,
Err(i) => i,
};
self.is_value = other.is_value();
*node = other;
}
toml_edit::visit_mut::visit_item_mut(self, node);
self.is_value = is_parent_value;
}
fn visit_table_mut(&mut self, node: &mut toml_edit::Table) {
node.decor_mut().clear();
// Empty tables could be semantically meaningful, so make sure they are not implicit
if !node.is_empty() {
node.set_implicit(true);
}
toml_edit::visit_mut::visit_table_mut(self, node);
}
fn visit_value_mut(&mut self, node: &mut toml_edit::Value) {
node.decor_mut().clear();
toml_edit::visit_mut::visit_value_mut(self, node);
}
fn visit_array_mut(&mut self, node: &mut toml_edit::Array) {
toml_edit::visit_mut::visit_array_mut(self, node);
if !self.multiline_array || (0..=1).contains(&node.len()) {
node.set_trailing("");
node.set_trailing_comma(false);
} else {
for item in node.iter_mut() {
item.decor_mut().set_prefix("\n ");
}
node.set_trailing("\n");
node.set_trailing_comma(true);
}
}
}
+185
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//! A [serde]-compatible [TOML]-parsing library
//!
//! TOML itself is a simple, ergonomic, and readable configuration format:
//!
//! ```toml
//! [package]
//! name = "toml"
//!
//! [dependencies]
//! serde = "1.0"
//! ```
//!
//! The TOML format tends to be relatively common throughout the Rust community
//! for configuration, notably being used by [Cargo], Rust's package manager.
//!
//! ## TOML values
//!
//! A TOML document is represented with the [`Table`] type which maps `String` to the [`Value`] enum:
//!
//! ```rust
//! # use toml::value::{Datetime, Array, Table};
//! pub enum Value {
//! String(String),
//! Integer(i64),
//! Float(f64),
//! Boolean(bool),
//! Datetime(Datetime),
//! Array(Array),
//! Table(Table),
//! }
//! ```
//!
//! ## Parsing TOML
//!
//! The easiest way to parse a TOML document is via the [`Table`] type:
//!
#![cfg_attr(not(feature = "parse"), doc = " ```ignore")]
#![cfg_attr(feature = "parse", doc = " ```")]
//! use toml::Table;
//!
//! let value = "foo = 'bar'".parse::<Table>().unwrap();
//!
//! assert_eq!(value["foo"].as_str(), Some("bar"));
//! ```
//!
//! The [`Table`] type implements a number of convenience methods and
//! traits; the example above uses [`FromStr`] to parse a [`str`] into a
//! [`Table`].
//!
//! ## Deserialization and Serialization
//!
//! This crate supports [`serde`] 1.0 with a number of
//! implementations of the `Deserialize`, `Serialize`, `Deserializer`, and
//! `Serializer` traits. Namely, you'll find:
//!
//! * `Deserialize for Table`
//! * `Serialize for Table`
//! * `Deserialize for Value`
//! * `Serialize for Value`
//! * `Deserialize for Datetime`
//! * `Serialize for Datetime`
//! * `Deserializer for de::Deserializer`
//! * `Serializer for ser::Serializer`
//! * `Deserializer for Table`
//! * `Deserializer for Value`
//!
//! This means that you can use Serde to deserialize/serialize the
//! [`Table`] type as well as [`Value`] and [`Datetime`] type in this crate. You can also
//! use the [`Deserializer`], [`Serializer`], or [`Table`] type itself to act as
//! a deserializer/serializer for arbitrary types.
//!
//! An example of deserializing with TOML is:
//!
#![cfg_attr(not(feature = "parse"), doc = " ```ignore")]
#![cfg_attr(feature = "parse", doc = " ```")]
//! use serde::Deserialize;
//!
//! #[derive(Deserialize)]
//! struct Config {
//! ip: String,
//! port: Option<u16>,
//! keys: Keys,
//! }
//!
//! #[derive(Deserialize)]
//! struct Keys {
//! github: String,
//! travis: Option<String>,
//! }
//!
//! let config: Config = toml::from_str(r#"
//! ip = '127.0.0.1'
//!
//! [keys]
//! github = 'xxxxxxxxxxxxxxxxx'
//! travis = 'yyyyyyyyyyyyyyyyy'
//! "#).unwrap();
//!
//! assert_eq!(config.ip, "127.0.0.1");
//! assert_eq!(config.port, None);
//! assert_eq!(config.keys.github, "xxxxxxxxxxxxxxxxx");
//! assert_eq!(config.keys.travis.as_ref().unwrap(), "yyyyyyyyyyyyyyyyy");
//! ```
//!
//! You can serialize types in a similar fashion:
//!
#![cfg_attr(not(feature = "display"), doc = " ```ignore")]
#![cfg_attr(feature = "display", doc = " ```")]
//! use serde::Serialize;
//!
//! #[derive(Serialize)]
//! struct Config {
//! ip: String,
//! port: Option<u16>,
//! keys: Keys,
//! }
//!
//! #[derive(Serialize)]
//! struct Keys {
//! github: String,
//! travis: Option<String>,
//! }
//!
//! let config = Config {
//! ip: "127.0.0.1".to_string(),
//! port: None,
//! keys: Keys {
//! github: "xxxxxxxxxxxxxxxxx".to_string(),
//! travis: Some("yyyyyyyyyyyyyyyyy".to_string()),
//! },
//! };
//!
//! let toml = toml::to_string(&config).unwrap();
//! ```
//!
//! [TOML]: https://github.com/toml-lang/toml
//! [Cargo]: https://crates.io/
//! [`serde`]: https://serde.rs/
//! [serde]: https://serde.rs/
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
// Makes rustc abort compilation if there are any unsafe blocks in the crate.
// Presence of this annotation is picked up by tools such as cargo-geiger
// and lets them ensure that there is indeed no unsafe code as opposed to
// something they couldn't detect (e.g. unsafe added via macro expansion, etc).
#![forbid(unsafe_code)]
#![warn(missing_docs)]
#![warn(clippy::print_stderr)]
#![warn(clippy::print_stdout)]
pub mod map;
pub mod value;
pub mod de;
pub mod ser;
#[doc(hidden)]
pub mod macros;
mod edit;
#[cfg(feature = "display")]
mod fmt;
mod table;
#[cfg(feature = "parse")]
#[doc(inline)]
pub use crate::de::{from_str, Deserializer};
#[cfg(feature = "display")]
#[doc(inline)]
pub use crate::ser::{to_string, to_string_pretty, Serializer};
#[doc(inline)]
pub use crate::value::Value;
pub use serde_spanned::Spanned;
pub use table::Table;
// Shortcuts for the module doc-comment
#[allow(unused_imports)]
use core::str::FromStr;
#[allow(unused_imports)]
use toml_datetime::Datetime;
#[doc = include_str!("../README.md")]
#[cfg(doctest)]
pub struct ReadmeDoctests;
+455
View File
@@ -0,0 +1,455 @@
pub use serde::de::{Deserialize, IntoDeserializer};
use crate::value::{Array, Table, Value};
/// Construct a [`Table`] from TOML syntax.
///
/// ```rust
/// let cargo_toml = toml::toml! {
/// [package]
/// name = "toml"
///
/// [dependencies]
/// serde = "1.0"
///
/// [dev-dependencies]
/// serde_derive = "1.0"
/// serde_json = "1.0"
/// };
///
/// println!("{:#?}", cargo_toml);
/// ```
#[macro_export]
macro_rules! toml {
($($toml:tt)+) => {{
let table = $crate::value::Table::new();
let mut root = $crate::Value::Table(table);
$crate::toml_internal!(@toplevel root [] $($toml)+);
match root {
$crate::Value::Table(table) => table,
_ => unreachable!(),
}
}};
}
// TT-muncher to parse TOML syntax into a toml::Value.
//
// @toplevel -- Parse tokens outside of an inline table or inline array. In
// this state, `[table headers]` and `[[array headers]]` are
// allowed and `key = value` pairs are not separated by commas.
//
// @topleveldatetime -- Helper to parse a Datetime from string and insert it
// into a table, continuing in the @toplevel state.
//
// @path -- Turn a path segment into a string. Segments that look like idents
// are stringified, while quoted segments like `"cfg(windows)"`
// are not.
//
// @value -- Parse the value part of a `key = value` pair, which may be a
// primitive or inline table or inline array.
//
// @table -- Parse the contents of an inline table, returning them as a
// toml::Value::Table.
//
// @tabledatetime -- Helper to parse a Datetime from string and insert it
// into a table, continuing in the @table state.
//
// @array -- Parse the contents of an inline array, returning them as a
// toml::Value::Array.
//
// @arraydatetime -- Helper to parse a Datetime from string and push it into
// an array, continuing in the @array state.
//
// @trailingcomma -- Helper to append a comma to a sequence of tokens if the
// sequence is non-empty and does not already end in a trailing
// comma.
//
#[macro_export]
#[doc(hidden)]
macro_rules! toml_internal {
// Base case, no elements remaining.
(@toplevel $root:ident [$($path:tt)*]) => {};
// Parse negative number `key = -value`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = - $v:tt $($rest:tt)*) => {
$crate::toml_internal!(@toplevel $root [$($path)*] $($($k)-+).+ = (-$v) $($rest)*);
};
// Parse positive number `key = +value`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = + $v:tt $($rest:tt)*) => {
$crate::toml_internal!(@toplevel $root [$($path)*] $($($k)-+).+ = ($v) $($rest)*);
};
// Parse offset datetime `key = 1979-05-27T00:32:00.999999-07:00`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec . $frac - $tzh : $tzm) $($rest)*);
};
// Space instead of T.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec . $frac - $tzh : $tzm) $($rest)*);
};
// Parse offset datetime `key = 1979-05-27T00:32:00-07:00`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec - $tzh : $tzm) $($rest)*);
};
// Space instead of T.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec - $tzh : $tzm) $($rest)*);
};
// Parse local datetime `key = 1979-05-27T00:32:00.999999`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec . $frac) $($rest)*);
};
// Space instead of T.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec . $frac) $($rest)*);
};
// Parse offset datetime `key = 1979-05-27T07:32:00Z` and local datetime `key = 1979-05-27T07:32:00`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec) $($rest)*);
};
// Space instead of T.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec) $($rest)*);
};
// Parse local date `key = 1979-05-27`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($yr - $mo - $day) $($rest)*);
};
// Parse local time `key = 00:32:00.999999`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $hr:tt : $min:tt : $sec:tt . $frac:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($hr : $min : $sec . $frac) $($rest)*);
};
// Parse local time `key = 07:32:00`.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $hr:tt : $min:tt : $sec:tt $($rest:tt)*) => {
$crate::toml_internal!(@topleveldatetime $root [$($path)*] $($($k)-+).+ = ($hr : $min : $sec) $($rest)*);
};
// Parse any other `key = value` including string, inline array, inline
// table, number, and boolean.
(@toplevel $root:ident [$($path:tt)*] $($($k:tt)-+).+ = $v:tt $($rest:tt)*) => {{
$crate::macros::insert_toml(
&mut $root,
&[$($path)* $(&concat!($("-", $crate::toml_internal!(@path $k),)+)[1..], )+],
$crate::toml_internal!(@value $v));
$crate::toml_internal!(@toplevel $root [$($path)*] $($rest)*);
}};
// Parse array header `[[bin]]`.
(@toplevel $root:ident $oldpath:tt [[$($($path:tt)-+).+]] $($rest:tt)*) => {
$crate::macros::push_toml(
&mut $root,
&[$(&concat!($("-", $crate::toml_internal!(@path $path),)+)[1..],)+]);
$crate::toml_internal!(@toplevel $root [$(&concat!($("-", $crate::toml_internal!(@path $path),)+)[1..],)+] $($rest)*);
};
// Parse table header `[patch.crates-io]`.
(@toplevel $root:ident $oldpath:tt [$($($path:tt)-+).+] $($rest:tt)*) => {
$crate::macros::insert_toml(
&mut $root,
&[$(&concat!($("-", $crate::toml_internal!(@path $path),)+)[1..],)+],
$crate::Value::Table($crate::value::Table::new()));
$crate::toml_internal!(@toplevel $root [$(&concat!($("-", $crate::toml_internal!(@path $path),)+)[1..],)+] $($rest)*);
};
// Parse datetime from string and insert into table.
(@topleveldatetime $root:ident [$($path:tt)*] $($($k:tt)-+).+ = ($($datetime:tt)+) $($rest:tt)*) => {
$crate::macros::insert_toml(
&mut $root,
&[$($path)* $(&concat!($("-", $crate::toml_internal!(@path $k),)+)[1..], )+],
$crate::Value::Datetime(concat!($(stringify!($datetime)),+).parse().unwrap()));
$crate::toml_internal!(@toplevel $root [$($path)*] $($rest)*);
};
// Turn a path segment into a string.
(@path $ident:ident) => {
stringify!($ident)
};
// For a path segment that is not an ident, expect that it is already a
// quoted string, like in `[target."cfg(windows)".dependencies]`.
(@path $quoted:tt) => {
$quoted
};
// Construct a Value from an inline table.
(@value { $($inline:tt)* }) => {{
let mut table = $crate::Value::Table($crate::value::Table::new());
$crate::toml_internal!(@trailingcomma (@table table) $($inline)*);
table
}};
// Construct a Value from an inline array.
(@value [ $($inline:tt)* ]) => {{
let mut array = $crate::value::Array::new();
$crate::toml_internal!(@trailingcomma (@array array) $($inline)*);
$crate::Value::Array(array)
}};
(@value (-nan)) => {
$crate::Value::Float(::std::f64::NAN.copysign(-1.0))
};
(@value (nan)) => {
$crate::Value::Float(::std::f64::NAN.copysign(1.0))
};
(@value nan) => {
$crate::Value::Float(::std::f64::NAN.copysign(1.0))
};
(@value (-inf)) => {
$crate::Value::Float(::std::f64::NEG_INFINITY)
};
(@value (inf)) => {
$crate::Value::Float(::std::f64::INFINITY)
};
(@value inf) => {
$crate::Value::Float(::std::f64::INFINITY)
};
// Construct a Value from any other type, probably string or boolean or number.
(@value $v:tt) => {{
// TODO: Implement this with something like serde_json::to_value instead.
let de = $crate::macros::IntoDeserializer::<$crate::de::Error>::into_deserializer($v);
<$crate::Value as $crate::macros::Deserialize>::deserialize(de).unwrap()
}};
// Base case of inline table.
(@table $root:ident) => {};
// Parse negative number `key = -value`.
(@table $root:ident $($($k:tt)-+).+ = - $v:tt , $($rest:tt)*) => {
$crate::toml_internal!(@table $root $($($k)-+).+ = (-$v) , $($rest)*);
};
// Parse positive number `key = +value`.
(@table $root:ident $($($k:tt)-+).+ = + $v:tt , $($rest:tt)*) => {
$crate::toml_internal!(@table $root $($($k)-+).+ = ($v) , $($rest)*);
};
// Parse offset datetime `key = 1979-05-27T00:32:00.999999-07:00`.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec . $frac - $tzh : $tzm) $($rest)*);
};
// Space instead of T.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec . $frac - $tzh : $tzm) $($rest)*);
};
// Parse offset datetime `key = 1979-05-27T00:32:00-07:00`.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec - $tzh : $tzm) $($rest)*);
};
// Space instead of T.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec - $tzh : $tzm) $($rest)*);
};
// Parse local datetime `key = 1979-05-27T00:32:00.999999`.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec . $frac) $($rest)*);
};
// Space instead of T.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec . $frac) $($rest)*);
};
// Parse offset datetime `key = 1979-05-27T07:32:00Z` and local datetime `key = 1979-05-27T07:32:00`.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $dhr : $min : $sec) $($rest)*);
};
// Space instead of T.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day T $hr : $min : $sec) $($rest)*);
};
// Parse local date `key = 1979-05-27`.
(@table $root:ident $($($k:tt)-+).+ = $yr:tt - $mo:tt - $day:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($yr - $mo - $day) $($rest)*);
};
// Parse local time `key = 00:32:00.999999`.
(@table $root:ident $($($k:tt)-+).+ = $hr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($hr : $min : $sec . $frac) $($rest)*);
};
// Parse local time `key = 07:32:00`.
(@table $root:ident $($($k:tt)-+).+ = $hr:tt : $min:tt : $sec:tt , $($rest:tt)*) => {
$crate::toml_internal!(@tabledatetime $root $($($k)-+).+ = ($hr : $min : $sec) $($rest)*);
};
// Parse any other type, probably string or boolean or number.
(@table $root:ident $($($k:tt)-+).+ = $v:tt , $($rest:tt)*) => {
$crate::macros::insert_toml(
&mut $root,
&[$(&concat!($("-", $crate::toml_internal!(@path $k),)+)[1..], )+],
$crate::toml_internal!(@value $v));
$crate::toml_internal!(@table $root $($rest)*);
};
// Parse a Datetime from string and continue in @table state.
(@tabledatetime $root:ident $($($k:tt)-+).+ = ($($datetime:tt)*) $($rest:tt)*) => {
$crate::macros::insert_toml(
&mut $root,
&[$(&concat!($("-", $crate::toml_internal!(@path $k),)+)[1..], )+],
$crate::Value::Datetime(concat!($(stringify!($datetime)),+).parse().unwrap()));
$crate::toml_internal!(@table $root $($rest)*);
};
// Base case of inline array.
(@array $root:ident) => {};
// Parse negative number `-value`.
(@array $root:ident - $v:tt , $($rest:tt)*) => {
$crate::toml_internal!(@array $root (-$v) , $($rest)*);
};
// Parse positive number `+value`.
(@array $root:ident + $v:tt , $($rest:tt)*) => {
$crate::toml_internal!(@array $root ($v) , $($rest)*);
};
// Parse offset datetime `1979-05-27T00:32:00.999999-07:00`.
(@array $root:ident $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $dhr : $min : $sec . $frac - $tzh : $tzm) $($rest)*);
};
// Space instead of T.
(@array $root:ident $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day T $hr : $min : $sec . $frac - $tzh : $tzm) $($rest)*);
};
// Parse offset datetime `1979-05-27T00:32:00-07:00`.
(@array $root:ident $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $dhr : $min : $sec - $tzh : $tzm) $($rest)*);
};
// Space instead of T.
(@array $root:ident $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt - $tzh:tt : $tzm:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day T $hr : $min : $sec - $tzh : $tzm) $($rest)*);
};
// Parse local datetime `1979-05-27T00:32:00.999999`.
(@array $root:ident $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $dhr : $min : $sec . $frac) $($rest)*);
};
// Space instead of T.
(@array $root:ident $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day T $hr : $min : $sec . $frac) $($rest)*);
};
// Parse offset datetime `1979-05-27T07:32:00Z` and local datetime `1979-05-27T07:32:00`.
(@array $root:ident $yr:tt - $mo:tt - $dhr:tt : $min:tt : $sec:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $dhr : $min : $sec) $($rest)*);
};
// Space instead of T.
(@array $root:ident $yr:tt - $mo:tt - $day:tt $hr:tt : $min:tt : $sec:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day T $hr : $min : $sec) $($rest)*);
};
// Parse local date `1979-05-27`.
(@array $root:ident $yr:tt - $mo:tt - $day:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($yr - $mo - $day) $($rest)*);
};
// Parse local time `00:32:00.999999`.
(@array $root:ident $hr:tt : $min:tt : $sec:tt . $frac:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($hr : $min : $sec . $frac) $($rest)*);
};
// Parse local time `07:32:00`.
(@array $root:ident $hr:tt : $min:tt : $sec:tt , $($rest:tt)*) => {
$crate::toml_internal!(@arraydatetime $root ($hr : $min : $sec) $($rest)*);
};
// Parse any other type, probably string or boolean or number.
(@array $root:ident $v:tt , $($rest:tt)*) => {
$root.push($crate::toml_internal!(@value $v));
$crate::toml_internal!(@array $root $($rest)*);
};
// Parse a Datetime from string and continue in @array state.
(@arraydatetime $root:ident ($($datetime:tt)*) $($rest:tt)*) => {
$root.push($crate::Value::Datetime(concat!($(stringify!($datetime)),+).parse().unwrap()));
$crate::toml_internal!(@array $root $($rest)*);
};
// No trailing comma required if the tokens are empty.
(@trailingcomma ($($args:tt)*)) => {
$crate::toml_internal!($($args)*);
};
// Tokens end with a trailing comma, do not append another one.
(@trailingcomma ($($args:tt)*) ,) => {
$crate::toml_internal!($($args)* ,);
};
// Tokens end with something other than comma, append a trailing comma.
(@trailingcomma ($($args:tt)*) $last:tt) => {
$crate::toml_internal!($($args)* $last ,);
};
// Not yet at the last token.
(@trailingcomma ($($args:tt)*) $first:tt $($rest:tt)+) => {
$crate::toml_internal!(@trailingcomma ($($args)* $first) $($rest)+);
};
}
// Called when parsing a `key = value` pair.
// Inserts an entry into the table at the given path.
pub fn insert_toml(root: &mut Value, path: &[&str], value: Value) {
*traverse(root, path) = value;
}
// Called when parsing an `[[array header]]`.
// Pushes an empty table onto the array at the given path.
pub fn push_toml(root: &mut Value, path: &[&str]) {
let target = traverse(root, path);
if !target.is_array() {
*target = Value::Array(Array::new());
}
target
.as_array_mut()
.unwrap()
.push(Value::Table(Table::new()));
}
fn traverse<'a>(root: &'a mut Value, path: &[&str]) -> &'a mut Value {
let mut cur = root;
for &key in path {
// Lexical lifetimes :D
let cur1 = cur;
// From the TOML spec:
//
// > Each double-bracketed sub-table will belong to the most recently
// > defined table element above it.
let cur2 = if cur1.is_array() {
cur1.as_array_mut().unwrap().last_mut().unwrap()
} else {
cur1
};
// We are about to index into this value, so it better be a table.
if !cur2.is_table() {
*cur2 = Value::Table(Table::new());
}
if !cur2.as_table().unwrap().contains_key(key) {
// Insert an empty table for the next loop iteration to point to.
let empty = Value::Table(Table::new());
cur2.as_table_mut().unwrap().insert(key.to_owned(), empty);
}
// Step into the current table.
cur = cur2.as_table_mut().unwrap().get_mut(key).unwrap();
}
cur
}
+636
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@@ -0,0 +1,636 @@
// Copyright 2017 Serde Developers
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! A map of `String` to [Value].
//!
//! By default the map is backed by a [`BTreeMap`]. Enable the `preserve_order`
//! feature of toml-rs to use [`IndexMap`] instead.
//!
//! [`BTreeMap`]: https://doc.rust-lang.org/std/collections/struct.BTreeMap.html
//! [`IndexMap`]: https://docs.rs/indexmap
use crate::value::Value;
use serde::{de, ser};
use std::borrow::Borrow;
use std::fmt::{self, Debug};
use std::hash::Hash;
use std::iter::FromIterator;
use std::ops;
#[cfg(not(feature = "preserve_order"))]
use std::collections::{btree_map, BTreeMap};
#[cfg(feature = "preserve_order")]
use indexmap::{self, IndexMap};
/// Represents a TOML key/value type.
pub struct Map<K, V> {
map: MapImpl<K, V>,
}
#[cfg(not(feature = "preserve_order"))]
type MapImpl<K, V> = BTreeMap<K, V>;
#[cfg(feature = "preserve_order")]
type MapImpl<K, V> = IndexMap<K, V>;
impl Map<String, Value> {
/// Makes a new empty Map.
#[inline]
pub fn new() -> Self {
Map {
map: MapImpl::new(),
}
}
#[cfg(not(feature = "preserve_order"))]
/// Makes a new empty Map with the given initial capacity.
#[inline]
pub fn with_capacity(capacity: usize) -> Self {
// does not support with_capacity
let _ = capacity;
Map {
map: BTreeMap::new(),
}
}
#[cfg(feature = "preserve_order")]
/// Makes a new empty Map with the given initial capacity.
#[inline]
pub fn with_capacity(capacity: usize) -> Self {
Map {
map: IndexMap::with_capacity(capacity),
}
}
/// Clears the map, removing all values.
#[inline]
pub fn clear(&mut self) {
self.map.clear();
}
/// Returns a reference to the value corresponding to the key.
///
/// The key may be any borrowed form of the map's key type, but the ordering
/// on the borrowed form *must* match the ordering on the key type.
#[inline]
pub fn get<Q>(&self, key: &Q) -> Option<&Value>
where
String: Borrow<Q>,
Q: Ord + Eq + Hash + ?Sized,
{
self.map.get(key)
}
/// Returns true if the map contains a value for the specified key.
///
/// The key may be any borrowed form of the map's key type, but the ordering
/// on the borrowed form *must* match the ordering on the key type.
#[inline]
pub fn contains_key<Q>(&self, key: &Q) -> bool
where
String: Borrow<Q>,
Q: Ord + Eq + Hash + ?Sized,
{
self.map.contains_key(key)
}
/// Returns a mutable reference to the value corresponding to the key.
///
/// The key may be any borrowed form of the map's key type, but the ordering
/// on the borrowed form *must* match the ordering on the key type.
#[inline]
pub fn get_mut<Q>(&mut self, key: &Q) -> Option<&mut Value>
where
String: Borrow<Q>,
Q: Ord + Eq + Hash + ?Sized,
{
self.map.get_mut(key)
}
/// Returns the key-value pair matching the given key.
///
/// The key may be any borrowed form of the map's key type, but the ordering
/// on the borrowed form *must* match the ordering on the key type.
#[inline]
pub fn get_key_value<Q>(&self, key: &Q) -> Option<(&String, &Value)>
where
String: Borrow<Q>,
Q: ?Sized + Ord + Eq + Hash,
{
self.map.get_key_value(key)
}
/// Inserts a key-value pair into the map.
///
/// If the map did not have this key present, `None` is returned.
///
/// If the map did have this key present, the value is updated, and the old
/// value is returned. The key is not updated, though; this matters for
/// types that can be `==` without being identical.
#[inline]
pub fn insert(&mut self, k: String, v: Value) -> Option<Value> {
self.map.insert(k, v)
}
/// Removes a key from the map, returning the value at the key if the key
/// was previously in the map.
///
/// The key may be any borrowed form of the map's key type, but the ordering
/// on the borrowed form *must* match the ordering on the key type.
#[inline]
pub fn remove<Q>(&mut self, key: &Q) -> Option<Value>
where
String: Borrow<Q>,
Q: Ord + Eq + Hash + ?Sized,
{
#[cfg(not(feature = "preserve_order"))]
{
self.map.remove(key)
}
#[cfg(feature = "preserve_order")]
{
self.map.shift_remove(key)
}
}
/// Retains only the elements specified by the `keep` predicate.
///
/// In other words, remove all pairs `(k, v)` for which `keep(&k, &mut v)`
/// returns `false`.
///
/// The elements are visited in iteration order.
#[inline]
pub fn retain<F>(&mut self, mut keep: F)
where
F: FnMut(&str, &mut Value) -> bool,
{
self.map.retain(|key, value| keep(key.as_str(), value));
}
/// Gets the given key's corresponding entry in the map for in-place
/// manipulation.
pub fn entry<S>(&mut self, key: S) -> Entry<'_>
where
S: Into<String>,
{
#[cfg(feature = "preserve_order")]
use indexmap::map::Entry as EntryImpl;
#[cfg(not(feature = "preserve_order"))]
use std::collections::btree_map::Entry as EntryImpl;
match self.map.entry(key.into()) {
EntryImpl::Vacant(vacant) => Entry::Vacant(VacantEntry { vacant }),
EntryImpl::Occupied(occupied) => Entry::Occupied(OccupiedEntry { occupied }),
}
}
/// Returns the number of elements in the map.
#[inline]
pub fn len(&self) -> usize {
self.map.len()
}
/// Returns true if the map contains no elements.
#[inline]
pub fn is_empty(&self) -> bool {
self.map.is_empty()
}
/// Gets an iterator over the entries of the map.
#[inline]
pub fn iter(&self) -> Iter<'_> {
Iter {
iter: self.map.iter(),
}
}
/// Gets a mutable iterator over the entries of the map.
#[inline]
pub fn iter_mut(&mut self) -> IterMut<'_> {
IterMut {
iter: self.map.iter_mut(),
}
}
/// Gets an iterator over the keys of the map.
#[inline]
pub fn keys(&self) -> Keys<'_> {
Keys {
iter: self.map.keys(),
}
}
/// Gets an iterator over the values of the map.
#[inline]
pub fn values(&self) -> Values<'_> {
Values {
iter: self.map.values(),
}
}
}
impl Default for Map<String, Value> {
#[inline]
fn default() -> Self {
Map {
map: MapImpl::new(),
}
}
}
impl Clone for Map<String, Value> {
#[inline]
fn clone(&self) -> Self {
Map {
map: self.map.clone(),
}
}
}
impl PartialEq for Map<String, Value> {
#[inline]
fn eq(&self, other: &Self) -> bool {
self.map.eq(&other.map)
}
}
/// Access an element of this map. Panics if the given key is not present in the
/// map.
impl<Q> ops::Index<&Q> for Map<String, Value>
where
String: Borrow<Q>,
Q: Ord + Eq + Hash + ?Sized,
{
type Output = Value;
fn index(&self, index: &Q) -> &Value {
self.map.index(index)
}
}
/// Mutably access an element of this map. Panics if the given key is not
/// present in the map.
impl<Q> ops::IndexMut<&Q> for Map<String, Value>
where
String: Borrow<Q>,
Q: Ord + Eq + Hash + ?Sized,
{
fn index_mut(&mut self, index: &Q) -> &mut Value {
self.map.get_mut(index).expect("no entry found for key")
}
}
impl Debug for Map<String, Value> {
#[inline]
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
self.map.fmt(formatter)
}
}
impl ser::Serialize for Map<String, Value> {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: ser::Serializer,
{
use serde::ser::SerializeMap;
let mut map = serializer.serialize_map(Some(self.len()))?;
for (k, v) in self {
map.serialize_key(k)?;
map.serialize_value(v)?;
}
map.end()
}
}
impl<'de> de::Deserialize<'de> for Map<String, Value> {
#[inline]
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: de::Deserializer<'de>,
{
struct Visitor;
impl<'de> de::Visitor<'de> for Visitor {
type Value = Map<String, Value>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a map")
}
#[inline]
fn visit_unit<E>(self) -> Result<Self::Value, E>
where
E: de::Error,
{
Ok(Map::new())
}
#[inline]
fn visit_map<V>(self, mut visitor: V) -> Result<Self::Value, V::Error>
where
V: de::MapAccess<'de>,
{
let mut values = Map::new();
while let Some((key, value)) = visitor.next_entry()? {
values.insert(key, value);
}
Ok(values)
}
}
deserializer.deserialize_map(Visitor)
}
}
impl FromIterator<(String, Value)> for Map<String, Value> {
fn from_iter<T>(iter: T) -> Self
where
T: IntoIterator<Item = (String, Value)>,
{
Map {
map: FromIterator::from_iter(iter),
}
}
}
impl Extend<(String, Value)> for Map<String, Value> {
fn extend<T>(&mut self, iter: T)
where
T: IntoIterator<Item = (String, Value)>,
{
self.map.extend(iter);
}
}
macro_rules! delegate_iterator {
(($name:ident $($generics:tt)*) => $item:ty) => {
impl $($generics)* Iterator for $name $($generics)* {
type Item = $item;
#[inline]
fn next(&mut self) -> Option<Self::Item> {
self.iter.next()
}
#[inline]
fn size_hint(&self) -> (usize, Option<usize>) {
self.iter.size_hint()
}
}
impl $($generics)* DoubleEndedIterator for $name $($generics)* {
#[inline]
fn next_back(&mut self) -> Option<Self::Item> {
self.iter.next_back()
}
}
impl $($generics)* ExactSizeIterator for $name $($generics)* {
#[inline]
fn len(&self) -> usize {
self.iter.len()
}
}
}
}
//////////////////////////////////////////////////////////////////////////////
/// A view into a single entry in a map, which may either be vacant or occupied.
/// This enum is constructed from the [`entry`] method on [`Map`].
///
/// [`entry`]: struct.Map.html#method.entry
/// [`Map`]: struct.Map.html
pub enum Entry<'a> {
/// A vacant Entry.
Vacant(VacantEntry<'a>),
/// An occupied Entry.
Occupied(OccupiedEntry<'a>),
}
/// A vacant Entry. It is part of the [`Entry`] enum.
///
/// [`Entry`]: enum.Entry.html
pub struct VacantEntry<'a> {
vacant: VacantEntryImpl<'a>,
}
/// An occupied Entry. It is part of the [`Entry`] enum.
///
/// [`Entry`]: enum.Entry.html
pub struct OccupiedEntry<'a> {
occupied: OccupiedEntryImpl<'a>,
}
#[cfg(not(feature = "preserve_order"))]
type VacantEntryImpl<'a> = btree_map::VacantEntry<'a, String, Value>;
#[cfg(feature = "preserve_order")]
type VacantEntryImpl<'a> = indexmap::map::VacantEntry<'a, String, Value>;
#[cfg(not(feature = "preserve_order"))]
type OccupiedEntryImpl<'a> = btree_map::OccupiedEntry<'a, String, Value>;
#[cfg(feature = "preserve_order")]
type OccupiedEntryImpl<'a> = indexmap::map::OccupiedEntry<'a, String, Value>;
impl<'a> Entry<'a> {
/// Returns a reference to this entry's key.
pub fn key(&self) -> &String {
match *self {
Entry::Vacant(ref e) => e.key(),
Entry::Occupied(ref e) => e.key(),
}
}
/// Ensures a value is in the entry by inserting the default if empty, and
/// returns a mutable reference to the value in the entry.
pub fn or_insert(self, default: Value) -> &'a mut Value {
match self {
Entry::Vacant(entry) => entry.insert(default),
Entry::Occupied(entry) => entry.into_mut(),
}
}
/// Ensures a value is in the entry by inserting the result of the default
/// function if empty, and returns a mutable reference to the value in the
/// entry.
pub fn or_insert_with<F>(self, default: F) -> &'a mut Value
where
F: FnOnce() -> Value,
{
match self {
Entry::Vacant(entry) => entry.insert(default()),
Entry::Occupied(entry) => entry.into_mut(),
}
}
}
impl<'a> VacantEntry<'a> {
/// Gets a reference to the key that would be used when inserting a value
/// through the `VacantEntry`.
#[inline]
pub fn key(&self) -> &String {
self.vacant.key()
}
/// Sets the value of the entry with the `VacantEntry`'s key, and returns a
/// mutable reference to it.
#[inline]
pub fn insert(self, value: Value) -> &'a mut Value {
self.vacant.insert(value)
}
}
impl<'a> OccupiedEntry<'a> {
/// Gets a reference to the key in the entry.
#[inline]
pub fn key(&self) -> &String {
self.occupied.key()
}
/// Gets a reference to the value in the entry.
#[inline]
pub fn get(&self) -> &Value {
self.occupied.get()
}
/// Gets a mutable reference to the value in the entry.
#[inline]
pub fn get_mut(&mut self) -> &mut Value {
self.occupied.get_mut()
}
/// Converts the entry into a mutable reference to its value.
#[inline]
pub fn into_mut(self) -> &'a mut Value {
self.occupied.into_mut()
}
/// Sets the value of the entry with the `OccupiedEntry`'s key, and returns
/// the entry's old value.
#[inline]
pub fn insert(&mut self, value: Value) -> Value {
self.occupied.insert(value)
}
/// Takes the value of the entry out of the map, and returns it.
#[inline]
pub fn remove(self) -> Value {
#[cfg(not(feature = "preserve_order"))]
{
self.occupied.remove()
}
#[cfg(feature = "preserve_order")]
{
self.occupied.shift_remove()
}
}
}
//////////////////////////////////////////////////////////////////////////////
impl<'a> IntoIterator for &'a Map<String, Value> {
type Item = (&'a String, &'a Value);
type IntoIter = Iter<'a>;
#[inline]
fn into_iter(self) -> Self::IntoIter {
Iter {
iter: self.map.iter(),
}
}
}
/// An iterator over a `toml::Map`'s entries.
pub struct Iter<'a> {
iter: IterImpl<'a>,
}
#[cfg(not(feature = "preserve_order"))]
type IterImpl<'a> = btree_map::Iter<'a, String, Value>;
#[cfg(feature = "preserve_order")]
type IterImpl<'a> = indexmap::map::Iter<'a, String, Value>;
delegate_iterator!((Iter<'a>) => (&'a String, &'a Value));
//////////////////////////////////////////////////////////////////////////////
impl<'a> IntoIterator for &'a mut Map<String, Value> {
type Item = (&'a String, &'a mut Value);
type IntoIter = IterMut<'a>;
#[inline]
fn into_iter(self) -> Self::IntoIter {
IterMut {
iter: self.map.iter_mut(),
}
}
}
/// A mutable iterator over a `toml::Map`'s entries.
pub struct IterMut<'a> {
iter: IterMutImpl<'a>,
}
#[cfg(not(feature = "preserve_order"))]
type IterMutImpl<'a> = btree_map::IterMut<'a, String, Value>;
#[cfg(feature = "preserve_order")]
type IterMutImpl<'a> = indexmap::map::IterMut<'a, String, Value>;
delegate_iterator!((IterMut<'a>) => (&'a String, &'a mut Value));
//////////////////////////////////////////////////////////////////////////////
impl IntoIterator for Map<String, Value> {
type Item = (String, Value);
type IntoIter = IntoIter;
#[inline]
fn into_iter(self) -> Self::IntoIter {
IntoIter {
iter: self.map.into_iter(),
}
}
}
/// An owning iterator over a `toml::Map`'s entries.
pub struct IntoIter {
iter: IntoIterImpl,
}
#[cfg(not(feature = "preserve_order"))]
type IntoIterImpl = btree_map::IntoIter<String, Value>;
#[cfg(feature = "preserve_order")]
type IntoIterImpl = indexmap::map::IntoIter<String, Value>;
delegate_iterator!((IntoIter) => (String, Value));
//////////////////////////////////////////////////////////////////////////////
/// An iterator over a `toml::Map`'s keys.
pub struct Keys<'a> {
iter: KeysImpl<'a>,
}
#[cfg(not(feature = "preserve_order"))]
type KeysImpl<'a> = btree_map::Keys<'a, String, Value>;
#[cfg(feature = "preserve_order")]
type KeysImpl<'a> = indexmap::map::Keys<'a, String, Value>;
delegate_iterator!((Keys<'a>) => &'a String);
//////////////////////////////////////////////////////////////////////////////
/// An iterator over a `toml::Map`'s values.
pub struct Values<'a> {
iter: ValuesImpl<'a>,
}
#[cfg(not(feature = "preserve_order"))]
type ValuesImpl<'a> = btree_map::Values<'a, String, Value>;
#[cfg(feature = "preserve_order")]
type ValuesImpl<'a> = indexmap::map::Values<'a, String, Value>;
delegate_iterator!((Values<'a>) => &'a Value);
+107
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@@ -0,0 +1,107 @@
use super::write_document;
use super::{Error, Serializer};
use crate::fmt::DocumentFormatter;
type InnerSerializeDocumentSeq =
<toml_edit::ser::ValueSerializer as serde::Serializer>::SerializeSeq;
#[doc(hidden)]
pub struct SerializeDocumentArray<'d> {
inner: InnerSerializeDocumentSeq,
dst: &'d mut String,
settings: DocumentFormatter,
}
impl<'d> SerializeDocumentArray<'d> {
pub(crate) fn new(ser: Serializer<'d>, inner: InnerSerializeDocumentSeq) -> Self {
Self {
inner,
dst: ser.dst,
settings: ser.settings,
}
}
}
impl serde::ser::SerializeSeq for SerializeDocumentArray<'_> {
type Ok = ();
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_element(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_document(self.dst, self.settings, self.inner.end())
}
}
impl serde::ser::SerializeTuple for SerializeDocumentArray<'_> {
type Ok = ();
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_element(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_document(self.dst, self.settings, self.inner.end())
}
}
impl serde::ser::SerializeTupleStruct for SerializeDocumentArray<'_> {
type Ok = ();
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_field(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_document(self.dst, self.settings, self.inner.end())
}
}
type InnerSerializeDocumentTupleVariant =
<toml_edit::ser::ValueSerializer as serde::Serializer>::SerializeTupleVariant;
#[doc(hidden)]
pub struct SerializeDocumentTupleVariant<'d> {
inner: InnerSerializeDocumentTupleVariant,
dst: &'d mut String,
settings: DocumentFormatter,
}
impl<'d> SerializeDocumentTupleVariant<'d> {
pub(crate) fn new(ser: Serializer<'d>, inner: InnerSerializeDocumentTupleVariant) -> Self {
Self {
inner,
dst: ser.dst,
settings: ser.settings,
}
}
}
impl serde::ser::SerializeTupleVariant for SerializeDocumentTupleVariant<'_> {
type Ok = ();
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_field(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_document(self.dst, self.settings, self.inner.end())
}
}
+118
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@@ -0,0 +1,118 @@
use super::write_document;
use super::{Error, Serializer};
use crate::fmt::DocumentFormatter;
type InnerSerializeDocumentTable =
<toml_edit::ser::ValueSerializer as serde::Serializer>::SerializeMap;
#[doc(hidden)]
pub struct SerializeDocumentTable<'d> {
inner: InnerSerializeDocumentTable,
dst: &'d mut String,
settings: DocumentFormatter,
}
impl<'d> SerializeDocumentTable<'d> {
pub(crate) fn new(ser: Serializer<'d>, inner: InnerSerializeDocumentTable) -> Self {
Self {
inner,
dst: ser.dst,
settings: ser.settings,
}
}
}
impl serde::ser::SerializeMap for SerializeDocumentTable<'_> {
type Ok = ();
type Error = Error;
fn serialize_key<T>(&mut self, input: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_key(input).map_err(Error::wrap)
}
fn serialize_value<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_value(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_document(self.dst, self.settings, self.inner.end())
}
}
impl serde::ser::SerializeStruct for SerializeDocumentTable<'_> {
type Ok = ();
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_field(key, value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_document(self.dst, self.settings, self.inner.end())
}
}
impl serde::ser::SerializeStructVariant for SerializeDocumentTable<'_> {
type Ok = ();
type Error = Error;
#[inline]
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
serde::ser::SerializeStruct::serialize_field(self, key, value)
}
#[inline]
fn end(self) -> Result<Self::Ok, Self::Error> {
serde::ser::SerializeStruct::end(self)
}
}
type InnerSerializeDocumentStructVariant =
<toml_edit::ser::ValueSerializer as serde::Serializer>::SerializeStructVariant;
#[doc(hidden)]
pub struct SerializeDocumentStructVariant<'d> {
inner: InnerSerializeDocumentStructVariant,
dst: &'d mut String,
settings: DocumentFormatter,
}
impl<'d> SerializeDocumentStructVariant<'d> {
pub(crate) fn new(ser: Serializer<'d>, inner: InnerSerializeDocumentStructVariant) -> Self {
Self {
inner,
dst: ser.dst,
settings: ser.settings,
}
}
}
impl serde::ser::SerializeStructVariant for SerializeDocumentStructVariant<'_> {
type Ok = ();
type Error = Error;
#[inline]
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_field(key, value).map_err(Error::wrap)
}
#[inline]
fn end(self) -> Result<Self::Ok, Self::Error> {
write_document(self.dst, self.settings, self.inner.end())
}
}
+484
View File
@@ -0,0 +1,484 @@
//! Serializing Rust structures into TOML.
//!
//! This module contains all the Serde support for serializing Rust structures
//! into TOML documents (as strings). Note that some top-level functions here
//! are also provided at the top of the crate.
#[cfg(feature = "display")]
mod array;
#[cfg(feature = "display")]
mod map;
#[cfg(feature = "display")]
mod ser_value;
#[cfg(feature = "display")]
pub use ser_value::ValueSerializer;
/// Serialize the given data structure as a String of TOML.
///
/// Serialization can fail if `T`'s implementation of `Serialize` decides to
/// fail, if `T` contains a map with non-string keys, or if `T` attempts to
/// serialize an unsupported datatype such as an enum, tuple, or tuple struct.
///
/// To serialize TOML values, instead of documents, see [`ValueSerializer`].
///
/// # Examples
///
/// ```
/// use serde::Serialize;
///
/// #[derive(Serialize)]
/// struct Config {
/// database: Database,
/// }
///
/// #[derive(Serialize)]
/// struct Database {
/// ip: String,
/// port: Vec<u16>,
/// connection_max: u32,
/// enabled: bool,
/// }
///
/// let config = Config {
/// database: Database {
/// ip: "192.168.1.1".to_string(),
/// port: vec![8001, 8002, 8003],
/// connection_max: 5000,
/// enabled: false,
/// },
/// };
///
/// let toml = toml::to_string(&config).unwrap();
/// println!("{}", toml)
/// ```
#[cfg(feature = "display")]
pub fn to_string<T>(value: &T) -> Result<String, Error>
where
T: serde::ser::Serialize + ?Sized,
{
let mut output = String::new();
let serializer = Serializer::new(&mut output);
value.serialize(serializer)?;
Ok(output)
}
/// Serialize the given data structure as a "pretty" String of TOML.
///
/// This is identical to `to_string` except the output string has a more
/// "pretty" output. See `Serializer::pretty` for more details.
///
/// To serialize TOML values, instead of documents, see [`ValueSerializer`].
///
/// For greater customization, instead serialize to a
/// [`toml_edit::DocumentMut`](https://docs.rs/toml_edit/latest/toml_edit/struct.DocumentMut.html).
#[cfg(feature = "display")]
pub fn to_string_pretty<T>(value: &T) -> Result<String, Error>
where
T: serde::ser::Serialize + ?Sized,
{
let mut output = String::new();
let serializer = Serializer::pretty(&mut output);
value.serialize(serializer)?;
Ok(output)
}
/// Errors that can occur when serializing a type.
#[derive(Clone, PartialEq, Eq)]
pub struct Error {
pub(crate) inner: crate::edit::ser::Error,
}
impl Error {
pub(crate) fn new(inner: impl std::fmt::Display) -> Self {
Self {
inner: crate::edit::ser::Error::Custom(inner.to_string()),
}
}
#[cfg(feature = "display")]
pub(crate) fn wrap(inner: crate::edit::ser::Error) -> Self {
Self { inner }
}
pub(crate) fn unsupported_type(t: Option<&'static str>) -> Self {
Self {
inner: crate::edit::ser::Error::UnsupportedType(t),
}
}
pub(crate) fn unsupported_none() -> Self {
Self {
inner: crate::edit::ser::Error::UnsupportedNone,
}
}
pub(crate) fn key_not_string() -> Self {
Self {
inner: crate::edit::ser::Error::KeyNotString,
}
}
}
impl serde::ser::Error for Error {
fn custom<T>(msg: T) -> Self
where
T: std::fmt::Display,
{
Error::new(msg)
}
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
self.inner.fmt(f)
}
}
impl std::fmt::Debug for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
self.inner.fmt(f)
}
}
impl std::error::Error for Error {}
/// Serialization for TOML documents.
///
/// This structure implements serialization support for TOML to serialize an
/// arbitrary type to TOML. Note that the TOML format does not support all
/// datatypes in Rust, such as enums, tuples, and tuple structs. These types
/// will generate an error when serialized.
///
/// Currently a serializer always writes its output to an in-memory `String`,
/// which is passed in when creating the serializer itself.
///
/// To serialize TOML values, instead of documents, see [`ValueSerializer`].
#[cfg(feature = "display")]
pub struct Serializer<'d> {
dst: &'d mut String,
settings: crate::fmt::DocumentFormatter,
}
#[cfg(feature = "display")]
impl<'d> Serializer<'d> {
/// Creates a new serializer which will emit TOML into the buffer provided.
///
/// The serializer can then be used to serialize a type after which the data
/// will be present in `dst`.
pub fn new(dst: &'d mut String) -> Self {
Self {
dst,
settings: Default::default(),
}
}
/// Apply a default "pretty" policy to the document
///
/// For greater customization, instead serialize to a
/// [`toml_edit::DocumentMut`](https://docs.rs/toml_edit/latest/toml_edit/struct.DocumentMut.html).
pub fn pretty(dst: &'d mut String) -> Self {
let mut ser = Serializer::new(dst);
ser.settings.multiline_array = true;
ser
}
}
#[cfg(feature = "display")]
impl<'d> serde::ser::Serializer for Serializer<'d> {
type Ok = ();
type Error = Error;
type SerializeSeq = array::SerializeDocumentArray<'d>;
type SerializeTuple = array::SerializeDocumentArray<'d>;
type SerializeTupleStruct = array::SerializeDocumentArray<'d>;
type SerializeTupleVariant = array::SerializeDocumentTupleVariant<'d>;
type SerializeMap = map::SerializeDocumentTable<'d>;
type SerializeStruct = map::SerializeDocumentTable<'d>;
type SerializeStructVariant = map::SerializeDocumentStructVariant<'d>;
fn serialize_bool(self, v: bool) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_bool(v),
)
}
fn serialize_i8(self, v: i8) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_i8(v),
)
}
fn serialize_i16(self, v: i16) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_i16(v),
)
}
fn serialize_i32(self, v: i32) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_i32(v),
)
}
fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_i64(v),
)
}
fn serialize_u8(self, v: u8) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_u8(v),
)
}
fn serialize_u16(self, v: u16) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_u16(v),
)
}
fn serialize_u32(self, v: u32) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_u32(v),
)
}
fn serialize_u64(self, v: u64) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_u64(v),
)
}
fn serialize_f32(self, v: f32) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_f32(v),
)
}
fn serialize_f64(self, v: f64) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_f64(v),
)
}
fn serialize_char(self, v: char) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_char(v),
)
}
fn serialize_str(self, v: &str) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_str(v),
)
}
fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_bytes(v),
)
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_none(),
)
}
fn serialize_some<T>(self, v: &T) -> Result<Self::Ok, Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_some(v),
)
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_unit(),
)
}
fn serialize_unit_struct(self, name: &'static str) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_unit_struct(name),
)
}
fn serialize_unit_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_unit_variant(
name,
variant_index,
variant,
),
)
}
fn serialize_newtype_struct<T>(self, name: &'static str, v: &T) -> Result<Self::Ok, Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_newtype_struct(name, v),
)
}
fn serialize_newtype_variant<T>(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
write_document(
self.dst,
self.settings,
toml_edit::ser::ValueSerializer::new().serialize_newtype_variant(
name,
variant_index,
variant,
value,
),
)
}
fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
let ser = toml_edit::ser::ValueSerializer::new()
.serialize_seq(len)
.map_err(Error::wrap)?;
let ser = array::SerializeDocumentArray::new(self, ser);
Ok(ser)
}
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
let ser = toml_edit::ser::ValueSerializer::new()
.serialize_tuple_variant(name, variant_index, variant, len)
.map_err(Error::wrap)?;
let ser = array::SerializeDocumentTupleVariant::new(self, ser);
Ok(ser)
}
fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
let ser = toml_edit::ser::ValueSerializer::new()
.serialize_map(len)
.map_err(Error::wrap)?;
let ser = map::SerializeDocumentTable::new(self, ser);
Ok(ser)
}
fn serialize_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.serialize_map(Some(len))
}
fn serialize_struct_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
let ser = toml_edit::ser::ValueSerializer::new()
.serialize_struct_variant(name, variant_index, variant, len)
.map_err(Error::wrap)?;
let ser = map::SerializeDocumentStructVariant::new(self, ser);
Ok(ser)
}
}
#[cfg(feature = "display")]
pub(crate) fn write_document(
dst: &mut String,
mut settings: crate::fmt::DocumentFormatter,
value: Result<toml_edit::Value, crate::edit::ser::Error>,
) -> Result<(), Error> {
use std::fmt::Write;
use toml_edit::visit_mut::VisitMut as _;
let value = value.map_err(Error::wrap)?;
let mut table = match toml_edit::Item::Value(value).into_table() {
Ok(i) => i,
Err(_) => {
return Err(Error::unsupported_type(None));
}
};
settings.visit_table_mut(&mut table);
let doc: toml_edit::DocumentMut = table.into();
write!(dst, "{doc}").unwrap();
Ok(())
}
@@ -0,0 +1,101 @@
use super::write_value;
use super::{Error, ValueSerializer};
type InnerSerializeValueSeq = <toml_edit::ser::ValueSerializer as serde::Serializer>::SerializeSeq;
#[doc(hidden)]
pub struct SerializeValueArray<'d> {
inner: InnerSerializeValueSeq,
dst: &'d mut String,
}
impl<'d> SerializeValueArray<'d> {
pub(crate) fn new(ser: ValueSerializer<'d>, inner: InnerSerializeValueSeq) -> Self {
Self {
inner,
dst: ser.dst,
}
}
}
impl serde::ser::SerializeSeq for SerializeValueArray<'_> {
type Ok = ();
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_element(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_value(self.dst, self.inner.end())
}
}
impl serde::ser::SerializeTuple for SerializeValueArray<'_> {
type Ok = ();
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_element(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_value(self.dst, self.inner.end())
}
}
impl serde::ser::SerializeTupleStruct for SerializeValueArray<'_> {
type Ok = ();
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_field(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_value(self.dst, self.inner.end())
}
}
type InnerSerializeValueTupleVariant =
<toml_edit::ser::ValueSerializer as serde::Serializer>::SerializeTupleVariant;
#[doc(hidden)]
pub struct SerializeValueTupleVariant<'d> {
inner: InnerSerializeValueTupleVariant,
dst: &'d mut String,
}
impl<'d> SerializeValueTupleVariant<'d> {
pub(crate) fn new(ser: ValueSerializer<'d>, inner: InnerSerializeValueTupleVariant) -> Self {
Self {
inner,
dst: ser.dst,
}
}
}
impl serde::ser::SerializeTupleVariant for SerializeValueTupleVariant<'_> {
type Ok = ();
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_field(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_value(self.dst, self.inner.end())
}
}
@@ -0,0 +1,95 @@
use super::write_value;
use super::{Error, ValueSerializer};
type InnerSerializeValueTable =
<toml_edit::ser::ValueSerializer as serde::Serializer>::SerializeMap;
#[doc(hidden)]
pub struct SerializeValueTable<'d> {
inner: InnerSerializeValueTable,
dst: &'d mut String,
}
impl<'d> SerializeValueTable<'d> {
pub(crate) fn new(ser: ValueSerializer<'d>, inner: InnerSerializeValueTable) -> Self {
Self {
inner,
dst: ser.dst,
}
}
}
impl serde::ser::SerializeMap for SerializeValueTable<'_> {
type Ok = ();
type Error = Error;
fn serialize_key<T>(&mut self, input: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_key(input).map_err(Error::wrap)
}
fn serialize_value<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_value(value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_value(self.dst, self.inner.end())
}
}
impl serde::ser::SerializeStruct for SerializeValueTable<'_> {
type Ok = ();
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_field(key, value).map_err(Error::wrap)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
write_value(self.dst, self.inner.end())
}
}
type InnerSerializeValueStructVariant =
<toml_edit::ser::ValueSerializer as serde::Serializer>::SerializeStructVariant;
#[doc(hidden)]
pub struct SerializeValueStructVariant<'d> {
inner: InnerSerializeValueStructVariant,
dst: &'d mut String,
}
impl<'d> SerializeValueStructVariant<'d> {
pub(crate) fn new(ser: ValueSerializer<'d>, inner: InnerSerializeValueStructVariant) -> Self {
Self {
inner,
dst: ser.dst,
}
}
}
impl serde::ser::SerializeStructVariant for SerializeValueStructVariant<'_> {
type Ok = ();
type Error = Error;
#[inline]
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
self.inner.serialize_field(key, value).map_err(Error::wrap)
}
#[inline]
fn end(self) -> Result<Self::Ok, Self::Error> {
write_value(self.dst, self.inner.end())
}
}
@@ -0,0 +1,328 @@
mod array;
mod map;
use super::Error;
/// Serialization for TOML [values][crate::Value].
///
/// This structure implements serialization support for TOML to serialize an
/// arbitrary type to TOML. Note that the TOML format does not support all
/// datatypes in Rust, such as enums, tuples, and tuple structs. These types
/// will generate an error when serialized.
///
/// Currently a serializer always writes its output to an in-memory `String`,
/// which is passed in when creating the serializer itself.
///
/// # Examples
///
/// ```
/// use serde::Serialize;
///
/// #[derive(Serialize)]
/// struct Config {
/// database: Database,
/// }
///
/// #[derive(Serialize)]
/// struct Database {
/// ip: String,
/// port: Vec<u16>,
/// connection_max: u32,
/// enabled: bool,
/// }
///
/// let config = Config {
/// database: Database {
/// ip: "192.168.1.1".to_string(),
/// port: vec![8001, 8002, 8003],
/// connection_max: 5000,
/// enabled: false,
/// },
/// };
///
/// let mut value = String::new();
/// serde::Serialize::serialize(
/// &config,
/// toml::ser::ValueSerializer::new(&mut value)
/// ).unwrap();
/// println!("{}", value)
/// ```
#[cfg(feature = "display")]
pub struct ValueSerializer<'d> {
dst: &'d mut String,
}
impl<'d> ValueSerializer<'d> {
/// Creates a new serializer which will emit TOML into the buffer provided.
///
/// The serializer can then be used to serialize a type after which the data
/// will be present in `dst`.
pub fn new(dst: &'d mut String) -> Self {
Self { dst }
}
}
impl<'d> serde::ser::Serializer for ValueSerializer<'d> {
type Ok = ();
type Error = Error;
type SerializeSeq = array::SerializeValueArray<'d>;
type SerializeTuple = array::SerializeValueArray<'d>;
type SerializeTupleStruct = array::SerializeValueArray<'d>;
type SerializeTupleVariant = array::SerializeValueTupleVariant<'d>;
type SerializeMap = map::SerializeValueTable<'d>;
type SerializeStruct = map::SerializeValueTable<'d>;
type SerializeStructVariant = map::SerializeValueStructVariant<'d>;
fn serialize_bool(self, v: bool) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_bool(v),
)
}
fn serialize_i8(self, v: i8) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_i8(v),
)
}
fn serialize_i16(self, v: i16) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_i16(v),
)
}
fn serialize_i32(self, v: i32) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_i32(v),
)
}
fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_i64(v),
)
}
fn serialize_u8(self, v: u8) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_u8(v),
)
}
fn serialize_u16(self, v: u16) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_u16(v),
)
}
fn serialize_u32(self, v: u32) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_u32(v),
)
}
fn serialize_u64(self, v: u64) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_u64(v),
)
}
fn serialize_f32(self, v: f32) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_f32(v),
)
}
fn serialize_f64(self, v: f64) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_f64(v),
)
}
fn serialize_char(self, v: char) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_char(v),
)
}
fn serialize_str(self, v: &str) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_str(v),
)
}
fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_bytes(v),
)
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_none(),
)
}
fn serialize_some<T>(self, v: &T) -> Result<Self::Ok, Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_some(v),
)
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_unit(),
)
}
fn serialize_unit_struct(self, name: &'static str) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_unit_struct(name),
)
}
fn serialize_unit_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_unit_variant(
name,
variant_index,
variant,
),
)
}
fn serialize_newtype_struct<T>(self, name: &'static str, v: &T) -> Result<Self::Ok, Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_newtype_struct(name, v),
)
}
fn serialize_newtype_variant<T>(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde::ser::Serialize + ?Sized,
{
write_value(
self.dst,
toml_edit::ser::ValueSerializer::new().serialize_newtype_variant(
name,
variant_index,
variant,
value,
),
)
}
fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
let ser = toml_edit::ser::ValueSerializer::new()
.serialize_seq(len)
.map_err(Error::wrap)?;
let ser = array::SerializeValueArray::new(self, ser);
Ok(ser)
}
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
let ser = toml_edit::ser::ValueSerializer::new()
.serialize_tuple_variant(name, variant_index, variant, len)
.map_err(Error::wrap)?;
let ser = array::SerializeValueTupleVariant::new(self, ser);
Ok(ser)
}
fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
let ser = toml_edit::ser::ValueSerializer::new()
.serialize_map(len)
.map_err(Error::wrap)?;
let ser = map::SerializeValueTable::new(self, ser);
Ok(ser)
}
fn serialize_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.serialize_map(Some(len))
}
fn serialize_struct_variant(
self,
name: &'static str,
variant_index: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
let ser = toml_edit::ser::ValueSerializer::new()
.serialize_struct_variant(name, variant_index, variant, len)
.map_err(Error::wrap)?;
let ser = map::SerializeValueStructVariant::new(self, ser);
Ok(ser)
}
}
pub(crate) fn write_value(
dst: &mut String,
value: Result<toml_edit::Value, crate::edit::ser::Error>,
) -> Result<(), Error> {
use std::fmt::Write;
let value = value.map_err(Error::wrap)?;
write!(dst, "{value}").unwrap();
Ok(())
}
+115
View File
@@ -0,0 +1,115 @@
use serde::de;
use serde::ser;
use crate::map::Map;
use crate::Value;
/// Type representing a TOML table, payload of the `Value::Table` variant.
///
/// By default it entries are stored in
/// [lexicographic order](https://doc.rust-lang.org/std/primitive.str.html#impl-Ord-for-str)
/// of the keys. Enable the `preserve_order` feature to store entries in the order they appear in
/// the source file.
pub type Table = Map<String, Value>;
impl Table {
/// Convert a `T` into `toml::Table`.
///
/// This conversion can fail if `T`'s implementation of `Serialize` decides to
/// fail, or if `T` contains a map with non-string keys.
pub fn try_from<T>(value: T) -> Result<Self, crate::ser::Error>
where
T: ser::Serialize,
{
value.serialize(crate::value::TableSerializer)
}
/// Interpret a `toml::Table` as an instance of type `T`.
///
/// This conversion can fail if the structure of the `Table` does not match the structure
/// expected by `T`, for example if `T` is a bool which can't be mapped to a `Table`. It can
/// also fail if the structure is correct but `T`'s implementation of `Deserialize` decides
/// that something is wrong with the data, for example required struct fields are missing from
/// the TOML map or some number is too big to fit in the expected primitive type.
pub fn try_into<'de, T>(self) -> Result<T, crate::de::Error>
where
T: de::Deserialize<'de>,
{
de::Deserialize::deserialize(self)
}
}
#[cfg(feature = "display")]
impl std::fmt::Display for Table {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
crate::ser::to_string(self)
.expect("Unable to represent value as string")
.fmt(f)
}
}
#[cfg(feature = "parse")]
impl std::str::FromStr for Table {
type Err = crate::de::Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
crate::from_str(s)
}
}
impl<'de> de::Deserializer<'de> for Table {
type Error = crate::de::Error;
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, crate::de::Error>
where
V: de::Visitor<'de>,
{
Value::Table(self).deserialize_any(visitor)
}
#[inline]
fn deserialize_enum<V>(
self,
name: &'static str,
variants: &'static [&'static str],
visitor: V,
) -> Result<V::Value, crate::de::Error>
where
V: de::Visitor<'de>,
{
Value::Table(self).deserialize_enum(name, variants, visitor)
}
// `None` is interpreted as a missing field so be sure to implement `Some`
// as a present field.
fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, crate::de::Error>
where
V: de::Visitor<'de>,
{
Value::Table(self).deserialize_option(visitor)
}
fn deserialize_newtype_struct<V>(
self,
name: &'static str,
visitor: V,
) -> Result<V::Value, crate::de::Error>
where
V: de::Visitor<'de>,
{
Value::Table(self).deserialize_newtype_struct(name, visitor)
}
serde::forward_to_deserialize_any! {
bool u8 u16 u32 u64 i8 i16 i32 i64 f32 f64 char str string unit seq
bytes byte_buf map unit_struct tuple_struct struct
tuple ignored_any identifier
}
}
impl de::IntoDeserializer<'_, crate::de::Error> for Table {
type Deserializer = Self;
fn into_deserializer(self) -> Self {
self
}
}
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