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Vendor dependencies for 0.3.0 release

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Robert Garrett
2025-09-27 10:29:08 -05:00
parent 0c8d39d483
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202
vendor/toml_datetime/LICENSE-APACHE vendored Normal file
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Apache License
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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.

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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.

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# toml_datetime
[![Latest Version](https://img.shields.io/crates/v/toml_datetime.svg)](https://crates.io/crates/toml_datetime)
[![Documentation](https://docs.rs/toml_datetime/badge.svg)](https://docs.rs/toml_datetime)
## License
Licensed under either of
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or <https://www.apache.org/licenses/LICENSE-2.0>)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or <https://opensource.org/license/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.

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use core::fmt;
use core::str::{self, FromStr};
/// A parsed TOML datetime value
///
/// This structure is intended to represent the datetime primitive type that can
/// be encoded into TOML documents. This type is a parsed version that contains
/// all metadata internally.
///
/// Currently this type is intentionally conservative and only supports
/// `to_string` as an accessor. Over time though it's intended that it'll grow
/// more support!
///
/// Note that if you're using `Deserialize` to deserialize a TOML document, you
/// can use this as a placeholder for where you're expecting a datetime to be
/// specified.
///
/// Also note though that while this type implements `Serialize` and
/// `Deserialize` it's only recommended to use this type with the TOML format,
/// otherwise encoded in other formats it may look a little odd.
///
/// Depending on how the option values are used, this struct will correspond
/// with one of the following four datetimes from the [TOML v1.0.0 spec]:
///
/// | `date` | `time` | `offset` | TOML type |
/// | --------- | --------- | --------- | ------------------ |
/// | `Some(_)` | `Some(_)` | `Some(_)` | [Offset Date-Time] |
/// | `Some(_)` | `Some(_)` | `None` | [Local Date-Time] |
/// | `Some(_)` | `None` | `None` | [Local Date] |
/// | `None` | `Some(_)` | `None` | [Local Time] |
///
/// **1. Offset Date-Time**: If all the optional values are used, `Datetime`
/// corresponds to an [Offset Date-Time]. From the TOML v1.0.0 spec:
///
/// > To unambiguously represent a specific instant in time, you may use an
/// > RFC 3339 formatted date-time with offset.
/// >
/// > ```toml
/// > odt1 = 1979-05-27T07:32:00Z
/// > odt2 = 1979-05-27T00:32:00-07:00
/// > odt3 = 1979-05-27T00:32:00.999999-07:00
/// > ```
/// >
/// > For the sake of readability, you may replace the T delimiter between date
/// > and time with a space character (as permitted by RFC 3339 section 5.6).
/// >
/// > ```toml
/// > odt4 = 1979-05-27 07:32:00Z
/// > ```
///
/// **2. Local Date-Time**: If `date` and `time` are given but `offset` is
/// `None`, `Datetime` corresponds to a [Local Date-Time]. From the spec:
///
/// > If you omit the offset from an RFC 3339 formatted date-time, it will
/// > represent the given date-time without any relation to an offset or
/// > timezone. It cannot be converted to an instant in time without additional
/// > information. Conversion to an instant, if required, is implementation-
/// > specific.
/// >
/// > ```toml
/// > ldt1 = 1979-05-27T07:32:00
/// > ldt2 = 1979-05-27T00:32:00.999999
/// > ```
///
/// **3. Local Date**: If only `date` is given, `Datetime` corresponds to a
/// [Local Date]; see the docs for [`Date`].
///
/// **4. Local Time**: If only `time` is given, `Datetime` corresponds to a
/// [Local Time]; see the docs for [`Time`].
///
/// [TOML v1.0.0 spec]: https://toml.io/en/v1.0.0
/// [Offset Date-Time]: https://toml.io/en/v1.0.0#offset-date-time
/// [Local Date-Time]: https://toml.io/en/v1.0.0#local-date-time
/// [Local Date]: https://toml.io/en/v1.0.0#local-date
/// [Local Time]: https://toml.io/en/v1.0.0#local-time
#[derive(PartialEq, Eq, PartialOrd, Ord, Copy, Clone, Debug)]
pub struct Datetime {
/// Optional date.
/// Required for: *Offset Date-Time*, *Local Date-Time*, *Local Date*.
pub date: Option<Date>,
/// Optional time.
/// Required for: *Offset Date-Time*, *Local Date-Time*, *Local Time*.
pub time: Option<Time>,
/// Optional offset.
/// Required for: *Offset Date-Time*.
pub offset: Option<Offset>,
}
// Currently serde itself doesn't have a datetime type, so we map our `Datetime`
// to a special value in the serde data model. Namely one with these special
// fields/struct names.
//
// In general the TOML encoder/decoder will catch this and not literally emit
// these strings but rather emit datetimes as they're intended.
#[cfg(feature = "serde")]
pub(crate) const FIELD: &str = "$__toml_private_datetime";
#[cfg(feature = "serde")]
pub(crate) const NAME: &str = "$__toml_private_Datetime";
#[cfg(feature = "serde")]
pub(crate) fn is_datetime(name: &'static str) -> bool {
name == NAME
}
/// A parsed TOML date value
///
/// May be part of a [`Datetime`]. Alone, `Date` corresponds to a [Local Date].
/// From the TOML v1.0.0 spec:
///
/// > If you include only the date portion of an RFC 3339 formatted date-time,
/// > it will represent that entire day without any relation to an offset or
/// > timezone.
/// >
/// > ```toml
/// > ld1 = 1979-05-27
/// > ```
///
/// [Local Date]: https://toml.io/en/v1.0.0#local-date
#[derive(PartialEq, Eq, PartialOrd, Ord, Copy, Clone, Debug)]
pub struct Date {
/// Year: four digits
pub year: u16,
/// Month: 1 to 12
pub month: u8,
/// Day: 1 to {28, 29, 30, 31} (based on month/year)
pub day: u8,
}
/// A parsed TOML time value
///
/// May be part of a [`Datetime`]. Alone, `Time` corresponds to a [Local Time].
/// From the TOML v1.0.0 spec:
///
/// > If you include only the time portion of an RFC 3339 formatted date-time,
/// > it will represent that time of day without any relation to a specific
/// > day or any offset or timezone.
/// >
/// > ```toml
/// > lt1 = 07:32:00
/// > lt2 = 00:32:00.999999
/// > ```
/// >
/// > Millisecond precision is required. Further precision of fractional
/// > seconds is implementation-specific. If the value contains greater
/// > precision than the implementation can support, the additional precision
/// > must be truncated, not rounded.
///
/// [Local Time]: https://toml.io/en/v1.0.0#local-time
#[derive(PartialEq, Eq, PartialOrd, Ord, Copy, Clone, Debug)]
pub struct Time {
/// Hour: 0 to 23
pub hour: u8,
/// Minute: 0 to 59
pub minute: u8,
/// Second: 0 to {58, 59, 60} (based on leap second rules)
pub second: u8,
/// Nanosecond: 0 to `999_999_999`
pub nanosecond: u32,
}
/// A parsed TOML time offset
///
#[derive(PartialEq, Eq, PartialOrd, Ord, Copy, Clone, Debug)]
pub enum Offset {
/// > A suffix which, when applied to a time, denotes a UTC offset of 00:00;
/// > often spoken "Zulu" from the ICAO phonetic alphabet representation of
/// > the letter "Z". --- [RFC 3339 section 2]
///
/// [RFC 3339 section 2]: https://datatracker.ietf.org/doc/html/rfc3339#section-2
Z,
/// Offset between local time and UTC
Custom {
/// Minutes: -`1_440..1_440`
minutes: i16,
},
}
impl Datetime {
#[cfg(feature = "serde")]
fn type_name(&self) -> &'static str {
match (
self.date.is_some(),
self.time.is_some(),
self.offset.is_some(),
) {
(true, true, true) => "offset datetime",
(true, true, false) => "local datetime",
(true, false, false) => Date::type_name(),
(false, true, false) => Time::type_name(),
_ => unreachable!("unsupported datetime combination"),
}
}
}
impl Date {
#[cfg(feature = "serde")]
fn type_name() -> &'static str {
"local date"
}
}
impl Time {
#[cfg(feature = "serde")]
fn type_name() -> &'static str {
"local time"
}
}
impl From<Date> for Datetime {
fn from(other: Date) -> Self {
Self {
date: Some(other),
time: None,
offset: None,
}
}
}
impl From<Time> for Datetime {
fn from(other: Time) -> Self {
Self {
date: None,
time: Some(other),
offset: None,
}
}
}
#[cfg(feature = "alloc")]
impl fmt::Display for Datetime {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if let Some(ref date) = self.date {
write!(f, "{date}")?;
}
if let Some(ref time) = self.time {
if self.date.is_some() {
write!(f, "T")?;
}
write!(f, "{time}")?;
}
if let Some(ref offset) = self.offset {
write!(f, "{offset}")?;
}
Ok(())
}
}
impl fmt::Display for Date {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{:04}-{:02}-{:02}", self.year, self.month, self.day)
}
}
#[cfg(feature = "alloc")]
impl fmt::Display for Time {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{:02}:{:02}:{:02}", self.hour, self.minute, self.second)?;
if self.nanosecond != 0 {
let s = alloc::format!("{:09}", self.nanosecond);
write!(f, ".{}", s.trim_end_matches('0'))?;
}
Ok(())
}
}
impl fmt::Display for Offset {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
Self::Z => write!(f, "Z"),
Self::Custom { mut minutes } => {
let mut sign = '+';
if minutes < 0 {
minutes *= -1;
sign = '-';
}
let hours = minutes / 60;
let minutes = minutes % 60;
write!(f, "{sign}{hours:02}:{minutes:02}")
}
}
}
}
impl FromStr for Datetime {
type Err = DatetimeParseError;
fn from_str(date: &str) -> Result<Self, DatetimeParseError> {
// Accepted formats:
//
// 0000-00-00T00:00:00.00Z
// 0000-00-00T00:00:00.00
// 0000-00-00
// 00:00:00.00
//
// ```abnf
// ;; Date and Time (as defined in RFC 3339)
//
// date-time = offset-date-time / local-date-time / local-date / local-time
//
// date-fullyear = 4DIGIT
// date-month = 2DIGIT ; 01-12
// date-mday = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on month/year
// time-delim = "T" / %x20 ; T, t, or space
// time-hour = 2DIGIT ; 00-23
// time-minute = 2DIGIT ; 00-59
// time-second = 2DIGIT ; 00-58, 00-59, 00-60 based on leap second rules
// time-secfrac = "." 1*DIGIT
// time-numoffset = ( "+" / "-" ) time-hour ":" time-minute
// time-offset = "Z" / time-numoffset
//
// partial-time = time-hour ":" time-minute ":" time-second [ time-secfrac ]
// full-date = date-fullyear "-" date-month "-" date-mday
// full-time = partial-time time-offset
//
// ;; Offset Date-Time
//
// offset-date-time = full-date time-delim full-time
//
// ;; Local Date-Time
//
// local-date-time = full-date time-delim partial-time
//
// ;; Local Date
//
// local-date = full-date
//
// ;; Local Time
//
// local-time = partial-time
// ```
let mut result = Self {
date: None,
time: None,
offset: None,
};
let mut lexer = Lexer::new(date);
let digits = lexer
.next()
.ok_or(DatetimeParseError::new().expected("year or hour"))?;
digits
.is(TokenKind::Digits)
.map_err(|err| err.expected("year or hour"))?;
let sep = lexer
.next()
.ok_or(DatetimeParseError::new().expected("`-` (YYYY-MM) or `:` (HH:MM)"))?;
match sep.kind {
TokenKind::Dash => {
let year = digits;
let month = lexer
.next()
.ok_or_else(|| DatetimeParseError::new().what("date").expected("month"))?;
month
.is(TokenKind::Digits)
.map_err(|err| err.what("date").expected("month"))?;
let sep = lexer.next().ok_or(
DatetimeParseError::new()
.what("date")
.expected("`-` (MM-DD)"),
)?;
sep.is(TokenKind::Dash)
.map_err(|err| err.what("date").expected("`-` (MM-DD)"))?;
let day = lexer
.next()
.ok_or(DatetimeParseError::new().what("date").expected("day"))?;
day.is(TokenKind::Digits)
.map_err(|err| err.what("date").expected("day"))?;
if year.raw.len() != 4 {
return Err(DatetimeParseError::new()
.what("date")
.expected("a four-digit year (YYYY)"));
}
if month.raw.len() != 2 {
return Err(DatetimeParseError::new()
.what("date")
.expected("a two-digit month (MM)"));
}
if day.raw.len() != 2 {
return Err(DatetimeParseError::new()
.what("date")
.expected("a two-digit day (DD)"));
}
let date = Date {
year: year.raw.parse().map_err(|_err| DatetimeParseError::new())?,
month: month
.raw
.parse()
.map_err(|_err| DatetimeParseError::new())?,
day: day.raw.parse().map_err(|_err| DatetimeParseError::new())?,
};
if date.month < 1 || date.month > 12 {
return Err(DatetimeParseError::new()
.what("date")
.expected("month between 01 and 12"));
}
let is_leap_year =
(date.year % 4 == 0) && ((date.year % 100 != 0) || (date.year % 400 == 0));
let (max_days_in_month, expected_day) = match date.month {
2 if is_leap_year => (29, "day between 01 and 29"),
2 => (28, "day between 01 and 28"),
4 | 6 | 9 | 11 => (30, "day between 01 and 30"),
_ => (31, "day between 01 and 31"),
};
if date.day < 1 || date.day > max_days_in_month {
return Err(DatetimeParseError::new()
.what("date")
.expected(expected_day));
}
result.date = Some(date);
}
TokenKind::Colon => lexer = Lexer::new(date),
_ => {
return Err(DatetimeParseError::new().expected("`-` (YYYY-MM) or `:` (HH:MM)"));
}
}
// Next parse the "partial-time" if available
let partial_time = if result.date.is_some() {
let sep = lexer.next();
match sep {
Some(token) if matches!(token.kind, TokenKind::T | TokenKind::Space) => true,
Some(_token) => {
return Err(DatetimeParseError::new()
.what("date-time")
.expected("`T` between date and time"));
}
None => false,
}
} else {
result.date.is_none()
};
if partial_time {
let hour = lexer
.next()
.ok_or_else(|| DatetimeParseError::new().what("time").expected("hour"))?;
hour.is(TokenKind::Digits)
.map_err(|err| err.what("time").expected("hour"))?;
let sep = lexer.next().ok_or(
DatetimeParseError::new()
.what("time")
.expected("`:` (HH:MM)"),
)?;
sep.is(TokenKind::Colon)
.map_err(|err| err.what("time").expected("`:` (HH:MM)"))?;
let minute = lexer
.next()
.ok_or(DatetimeParseError::new().what("time").expected("minute"))?;
minute
.is(TokenKind::Digits)
.map_err(|err| err.what("time").expected("minute"))?;
let sep = lexer.next().ok_or(
DatetimeParseError::new()
.what("time")
.expected("`:` (MM:SS)"),
)?;
sep.is(TokenKind::Colon)
.map_err(|err| err.what("time").expected("`:` (MM:SS)"))?;
let second = lexer
.next()
.ok_or(DatetimeParseError::new().what("time").expected("second"))?;
second
.is(TokenKind::Digits)
.map_err(|err| err.what("time").expected("second"))?;
let nanosecond = if lexer.clone().next().map(|t| t.kind) == Some(TokenKind::Dot) {
let sep = lexer.next().ok_or(DatetimeParseError::new())?;
sep.is(TokenKind::Dot)?;
let nanosecond = lexer.next().ok_or(
DatetimeParseError::new()
.what("time")
.expected("nanosecond"),
)?;
nanosecond
.is(TokenKind::Digits)
.map_err(|err| err.what("time").expected("nanosecond"))?;
Some(nanosecond)
} else {
None
};
if hour.raw.len() != 2 {
return Err(DatetimeParseError::new()
.what("time")
.expected("a two-digit hour (HH)"));
}
if minute.raw.len() != 2 {
return Err(DatetimeParseError::new()
.what("time")
.expected("a two-digit minute (MM)"));
}
if second.raw.len() != 2 {
return Err(DatetimeParseError::new()
.what("time")
.expected("a two-digit second (SS)"));
}
let time = Time {
hour: hour.raw.parse().map_err(|_err| DatetimeParseError::new())?,
minute: minute
.raw
.parse()
.map_err(|_err| DatetimeParseError::new())?,
second: second
.raw
.parse()
.map_err(|_err| DatetimeParseError::new())?,
nanosecond: nanosecond.map(|t| s_to_nanoseconds(t.raw)).unwrap_or(0),
};
if time.hour > 23 {
return Err(DatetimeParseError::new()
.what("time")
.expected("hour between 00 and 23"));
}
if time.minute > 59 {
return Err(DatetimeParseError::new()
.what("time")
.expected("minute between 00 and 59"));
}
// 00-58, 00-59, 00-60 based on leap second rules
if time.second > 60 {
return Err(DatetimeParseError::new()
.what("time")
.expected("second between 00 and 60"));
}
if time.nanosecond > 999_999_999 {
return Err(DatetimeParseError::new()
.what("time")
.expected("nanoseconds overflowed"));
}
result.time = Some(time);
}
// And finally, parse the offset
if result.date.is_some() && result.time.is_some() {
match lexer.next() {
Some(token) if token.kind == TokenKind::Z => {
result.offset = Some(Offset::Z);
}
Some(token) if matches!(token.kind, TokenKind::Plus | TokenKind::Dash) => {
let sign = if token.kind == TokenKind::Plus { 1 } else { -1 };
let hours = lexer
.next()
.ok_or(DatetimeParseError::new().what("offset").expected("hour"))?;
hours
.is(TokenKind::Digits)
.map_err(|err| err.what("offset").expected("hour"))?;
let sep = lexer.next().ok_or(
DatetimeParseError::new()
.what("offset")
.expected("`:` (HH:MM)"),
)?;
sep.is(TokenKind::Colon)
.map_err(|err| err.what("offset").expected("`:` (HH:MM)"))?;
let minutes = lexer
.next()
.ok_or(DatetimeParseError::new().what("offset").expected("minute"))?;
minutes
.is(TokenKind::Digits)
.map_err(|err| err.what("offset").expected("minute"))?;
if hours.raw.len() != 2 {
return Err(DatetimeParseError::new()
.what("offset")
.expected("a two-digit hour (HH)"));
}
if minutes.raw.len() != 2 {
return Err(DatetimeParseError::new()
.what("offset")
.expected("a two-digit minute (MM)"));
}
let hours = hours
.raw
.parse::<u8>()
.map_err(|_err| DatetimeParseError::new())?;
let minutes = minutes
.raw
.parse::<u8>()
.map_err(|_err| DatetimeParseError::new())?;
if hours > 23 {
return Err(DatetimeParseError::new()
.what("offset")
.expected("hours between 00 and 23"));
}
if minutes > 59 {
return Err(DatetimeParseError::new()
.what("offset")
.expected("minutes between 00 and 59"));
}
let total_minutes = sign * (hours as i16 * 60 + minutes as i16);
if !((-24 * 60)..=(24 * 60)).contains(&total_minutes) {
return Err(DatetimeParseError::new().what("offset"));
}
result.offset = Some(Offset::Custom {
minutes: total_minutes,
});
}
Some(_token) => {
return Err(DatetimeParseError::new()
.what("offset")
.expected("`Z`, +OFFSET, -OFFSET"));
}
None => {}
}
}
// Return an error if we didn't hit eof, otherwise return our parsed
// date
if lexer.unknown().is_some() {
return Err(DatetimeParseError::new());
}
Ok(result)
}
}
fn s_to_nanoseconds(input: &str) -> u32 {
let mut nanosecond = 0;
for (i, byte) in input.bytes().enumerate() {
if byte.is_ascii_digit() {
if i < 9 {
let p = 10_u32.pow(8 - i as u32);
nanosecond += p * u32::from(byte - b'0');
}
} else {
panic!("invalid nanoseconds {input:?}");
}
}
nanosecond
}
#[derive(Copy, Clone)]
struct Token<'s> {
kind: TokenKind,
raw: &'s str,
}
impl Token<'_> {
fn is(&self, kind: TokenKind) -> Result<(), DatetimeParseError> {
if self.kind == kind {
Ok(())
} else {
Err(DatetimeParseError::new())
}
}
}
#[derive(Copy, Clone, PartialEq, Eq)]
enum TokenKind {
Digits,
Dash,
Colon,
Dot,
T,
Space,
Z,
Plus,
Unknown,
}
#[derive(Copy, Clone)]
struct Lexer<'s> {
stream: &'s str,
}
impl<'s> Lexer<'s> {
fn new(input: &'s str) -> Self {
Self { stream: input }
}
fn unknown(&mut self) -> Option<Token<'s>> {
let remaining = self.stream.len();
if remaining == 0 {
return None;
}
let raw = self.stream;
self.stream = &self.stream[remaining..remaining];
Some(Token {
kind: TokenKind::Unknown,
raw,
})
}
}
impl<'s> Iterator for Lexer<'s> {
type Item = Token<'s>;
fn next(&mut self) -> Option<Self::Item> {
let (kind, end) = match self.stream.as_bytes().first()? {
b'0'..=b'9' => {
let end = self
.stream
.as_bytes()
.iter()
.position(|b| !b.is_ascii_digit())
.unwrap_or(self.stream.len());
(TokenKind::Digits, end)
}
b'-' => (TokenKind::Dash, 1),
b':' => (TokenKind::Colon, 1),
b'T' | b't' => (TokenKind::T, 1),
b' ' => (TokenKind::Space, 1),
b'Z' | b'z' => (TokenKind::Z, 1),
b'+' => (TokenKind::Plus, 1),
b'.' => (TokenKind::Dot, 1),
_ => (TokenKind::Unknown, self.stream.len()),
};
let (raw, rest) = self.stream.split_at(end);
self.stream = rest;
Some(Token { kind, raw })
}
}
/// Error returned from parsing a `Datetime` in the `FromStr` implementation.
#[derive(Debug, Clone)]
#[non_exhaustive]
pub struct DatetimeParseError {
what: Option<&'static str>,
expected: Option<&'static str>,
}
impl DatetimeParseError {
fn new() -> Self {
Self {
what: None,
expected: None,
}
}
fn what(mut self, what: &'static str) -> Self {
self.what = Some(what);
self
}
fn expected(mut self, expected: &'static str) -> Self {
self.expected = Some(expected);
self
}
}
impl fmt::Display for DatetimeParseError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if let Some(what) = self.what {
write!(f, "invalid {what}")?;
} else {
"invalid datetime".fmt(f)?;
}
if let Some(expected) = self.expected {
write!(f, ", expected {expected}")?;
}
Ok(())
}
}
#[cfg(feature = "std")]
impl std::error::Error for DatetimeParseError {}
#[cfg(all(not(feature = "std"), feature = "serde"))]
impl serde_core::de::StdError for DatetimeParseError {}
#[cfg(feature = "serde")]
#[cfg(feature = "alloc")]
impl serde_core::ser::Serialize for Datetime {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde_core::ser::Serializer,
{
use crate::alloc::string::ToString as _;
use serde_core::ser::SerializeStruct;
let mut s = serializer.serialize_struct(NAME, 1)?;
s.serialize_field(FIELD, &self.to_string())?;
s.end()
}
}
#[cfg(feature = "serde")]
#[cfg(feature = "alloc")]
impl serde_core::ser::Serialize for Date {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde_core::ser::Serializer,
{
Datetime::from(*self).serialize(serializer)
}
}
#[cfg(feature = "serde")]
#[cfg(feature = "alloc")]
impl serde_core::ser::Serialize for Time {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde_core::ser::Serializer,
{
Datetime::from(*self).serialize(serializer)
}
}
#[cfg(feature = "serde")]
impl<'de> serde_core::de::Deserialize<'de> for Datetime {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde_core::de::Deserializer<'de>,
{
struct DatetimeVisitor;
impl<'de> serde_core::de::Visitor<'de> for DatetimeVisitor {
type Value = Datetime;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a TOML datetime")
}
fn visit_map<V>(self, mut visitor: V) -> Result<Datetime, V::Error>
where
V: serde_core::de::MapAccess<'de>,
{
let value = visitor.next_key::<DatetimeKey>()?;
if value.is_none() {
return Err(serde_core::de::Error::custom("datetime key not found"));
}
let v: DatetimeFromString = visitor.next_value()?;
Ok(v.value)
}
}
static FIELDS: [&str; 1] = [FIELD];
deserializer.deserialize_struct(NAME, &FIELDS, DatetimeVisitor)
}
}
#[cfg(feature = "serde")]
impl<'de> serde_core::de::Deserialize<'de> for Date {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde_core::de::Deserializer<'de>,
{
match Datetime::deserialize(deserializer)? {
Datetime {
date: Some(date),
time: None,
offset: None,
} => Ok(date),
datetime => Err(serde_core::de::Error::invalid_type(
serde_core::de::Unexpected::Other(datetime.type_name()),
&Self::type_name(),
)),
}
}
}
#[cfg(feature = "serde")]
impl<'de> serde_core::de::Deserialize<'de> for Time {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde_core::de::Deserializer<'de>,
{
match Datetime::deserialize(deserializer)? {
Datetime {
date: None,
time: Some(time),
offset: None,
} => Ok(time),
datetime => Err(serde_core::de::Error::invalid_type(
serde_core::de::Unexpected::Other(datetime.type_name()),
&Self::type_name(),
)),
}
}
}
#[cfg(feature = "serde")]
struct DatetimeKey;
#[cfg(feature = "serde")]
impl<'de> serde_core::de::Deserialize<'de> for DatetimeKey {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde_core::de::Deserializer<'de>,
{
struct FieldVisitor;
impl serde_core::de::Visitor<'_> for FieldVisitor {
type Value = ();
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a valid datetime field")
}
fn visit_str<E>(self, s: &str) -> Result<(), E>
where
E: serde_core::de::Error,
{
if s == FIELD {
Ok(())
} else {
Err(serde_core::de::Error::custom(
"expected field with custom name",
))
}
}
}
deserializer.deserialize_identifier(FieldVisitor)?;
Ok(Self)
}
}
#[cfg(feature = "serde")]
pub(crate) struct DatetimeFromString {
pub(crate) value: Datetime,
}
#[cfg(feature = "serde")]
impl<'de> serde_core::de::Deserialize<'de> for DatetimeFromString {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde_core::de::Deserializer<'de>,
{
struct Visitor;
impl serde_core::de::Visitor<'_> for Visitor {
type Value = DatetimeFromString;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("string containing a datetime")
}
fn visit_str<E>(self, s: &str) -> Result<DatetimeFromString, E>
where
E: serde_core::de::Error,
{
match s.parse() {
Ok(date) => Ok(DatetimeFromString { value: date }),
Err(e) => Err(serde_core::de::Error::custom(e)),
}
}
}
deserializer.deserialize_str(Visitor)
}
}

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//! Deserialzation support for [`Datetime`][crate::Datetime]
use alloc::string::ToString;
use serde_core::de::value::BorrowedStrDeserializer;
use serde_core::de::IntoDeserializer;
/// Check if deserializing a [`Datetime`][crate::Datetime]
pub fn is_datetime(name: &'static str) -> bool {
crate::datetime::is_datetime(name)
}
/// Deserializer / format support for emitting [`Datetime`][crate::Datetime]
pub struct DatetimeDeserializer<E> {
date: Option<crate::Datetime>,
_error: core::marker::PhantomData<E>,
}
impl<E> DatetimeDeserializer<E> {
/// Create a deserializer to emit [`Datetime`][crate::Datetime]
pub fn new(date: crate::Datetime) -> Self {
Self {
date: Some(date),
_error: Default::default(),
}
}
}
impl<'de, E> serde_core::de::MapAccess<'de> for DatetimeDeserializer<E>
where
E: serde_core::de::Error,
{
type Error = E;
fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Self::Error>
where
K: serde_core::de::DeserializeSeed<'de>,
{
if self.date.is_some() {
seed.deserialize(BorrowedStrDeserializer::new(crate::datetime::FIELD))
.map(Some)
} else {
Ok(None)
}
}
fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Self::Error>
where
V: serde_core::de::DeserializeSeed<'de>,
{
if let Some(date) = self.date.take() {
seed.deserialize(date.to_string().into_deserializer())
} else {
panic!("next_value_seed called before next_key_seed")
}
}
}
/// Integrate [`Datetime`][crate::Datetime] into an untagged deserialize
#[cfg(feature = "alloc")]
pub enum VisitMap<'de> {
/// The map was deserialized as a [Datetime][crate::Datetime] value
Datetime(crate::Datetime),
/// The map is of an unknown format and needs further deserialization
Key(alloc::borrow::Cow<'de, str>),
}
impl<'de> VisitMap<'de> {
/// Determine the type of the map by deserializing it
pub fn next_key_seed<V: serde_core::de::MapAccess<'de>>(
visitor: &mut V,
) -> Result<Option<Self>, V::Error> {
let mut key = None;
let Some(()) = visitor.next_key_seed(DatetimeOrTable::new(&mut key))? else {
return Ok(None);
};
let result = if let Some(key) = key {
VisitMap::Key(key)
} else {
let date: crate::datetime::DatetimeFromString = visitor.next_value()?;
VisitMap::Datetime(date.value)
};
Ok(Some(result))
}
}
struct DatetimeOrTable<'m, 'de> {
key: &'m mut Option<alloc::borrow::Cow<'de, str>>,
}
impl<'m, 'de> DatetimeOrTable<'m, 'de> {
fn new(key: &'m mut Option<alloc::borrow::Cow<'de, str>>) -> Self {
*key = None;
Self { key }
}
}
impl<'de> serde_core::de::DeserializeSeed<'de> for DatetimeOrTable<'_, 'de> {
type Value = ();
fn deserialize<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
where
D: serde_core::de::Deserializer<'de>,
{
deserializer.deserialize_any(self)
}
}
impl<'de> serde_core::de::Visitor<'de> for DatetimeOrTable<'_, 'de> {
type Value = ();
fn expecting(&self, formatter: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
formatter.write_str("a string key")
}
fn visit_str<E>(self, s: &str) -> Result<Self::Value, E>
where
E: serde_core::de::Error,
{
if s == crate::datetime::FIELD {
*self.key = None;
Ok(())
} else {
use crate::alloc::borrow::ToOwned as _;
*self.key = Some(alloc::borrow::Cow::Owned(s.to_owned()));
Ok(())
}
}
fn visit_borrowed_str<E>(self, s: &'de str) -> Result<Self::Value, E>
where
E: serde_core::de::Error,
{
if s == crate::datetime::FIELD {
*self.key = None;
Ok(())
} else {
*self.key = Some(alloc::borrow::Cow::Borrowed(s));
Ok(())
}
}
#[allow(unused_qualifications)]
fn visit_string<E>(self, s: alloc::string::String) -> Result<Self::Value, E>
where
E: serde_core::de::Error,
{
if s == crate::datetime::FIELD {
*self.key = None;
Ok(())
} else {
*self.key = Some(alloc::borrow::Cow::Owned(s));
Ok(())
}
}
}

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//! A [TOML]-compatible datetime type
//!
//! [TOML]: https://github.com/toml-lang/toml
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
#![cfg_attr(all(not(feature = "std"), not(test)), no_std)]
#![warn(missing_docs)]
#![warn(clippy::std_instead_of_core)]
#![warn(clippy::std_instead_of_alloc)]
// 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(clippy::print_stderr)]
#![warn(clippy::print_stdout)]
#[cfg(feature = "alloc")]
#[allow(unused_extern_crates)]
extern crate alloc;
mod datetime;
#[cfg(feature = "serde")]
#[cfg(feature = "alloc")]
pub mod de;
#[cfg(feature = "serde")]
#[cfg(feature = "alloc")]
pub mod ser;
pub use crate::datetime::Date;
pub use crate::datetime::Datetime;
pub use crate::datetime::DatetimeParseError;
pub use crate::datetime::Offset;
pub use crate::datetime::Time;
#[doc = include_str!("../README.md")]
#[cfg(doctest)]
pub struct ReadmeDoctests;

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//! Serialization support for [`Datetime`][crate::Datetime]
/// Check if serializing a [`Datetime`][crate::Datetime]
pub fn is_datetime(name: &'static str) -> bool {
crate::datetime::is_datetime(name)
}
/// See [`DatetimeSerializer`]
#[derive(Debug)]
#[non_exhaustive]
pub enum SerializerError {
/// Unsupported datetime format
InvalidFormat(crate::DatetimeParseError),
/// Unsupported serialization protocol
InvalidProtocol,
}
impl serde_core::ser::Error for SerializerError {
fn custom<T>(_msg: T) -> Self
where
T: core::fmt::Display,
{
Self::InvalidProtocol
}
}
impl core::fmt::Display for SerializerError {
fn fmt(&self, formatter: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
match self {
Self::InvalidFormat(e) => e.fmt(formatter),
Self::InvalidProtocol => "invalid serialization protocol".fmt(formatter),
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for SerializerError {}
#[cfg(all(not(feature = "std"), feature = "serde"))]
impl serde_core::de::StdError for SerializerError {}
/// Serializer / format support for emitting [`Datetime`][crate::Datetime]
#[derive(Default)]
pub struct DatetimeSerializer {
value: Option<crate::Datetime>,
}
impl DatetimeSerializer {
/// Create a serializer to emit [`Datetime`][crate::Datetime]
pub fn new() -> Self {
Self { value: None }
}
/// See [`serde_core::ser::SerializeStruct::serialize_field`]
pub fn serialize_field<T>(
&mut self,
key: &'static str,
value: &T,
) -> Result<(), SerializerError>
where
T: serde_core::ser::Serialize + ?Sized,
{
if key == crate::datetime::FIELD {
self.value = Some(value.serialize(DatetimeFieldSerializer::default())?);
}
Ok(())
}
/// See [`serde_core::ser::SerializeStruct::end`]
pub fn end(self) -> Result<crate::Datetime, SerializerError> {
self.value.ok_or(SerializerError::InvalidProtocol)
}
}
#[derive(Default)]
struct DatetimeFieldSerializer {}
impl serde_core::ser::Serializer for DatetimeFieldSerializer {
type Ok = crate::Datetime;
type Error = SerializerError;
type SerializeSeq = serde_core::ser::Impossible<Self::Ok, Self::Error>;
type SerializeTuple = serde_core::ser::Impossible<Self::Ok, Self::Error>;
type SerializeTupleStruct = serde_core::ser::Impossible<Self::Ok, Self::Error>;
type SerializeTupleVariant = serde_core::ser::Impossible<Self::Ok, Self::Error>;
type SerializeMap = serde_core::ser::Impossible<Self::Ok, Self::Error>;
type SerializeStruct = serde_core::ser::Impossible<Self::Ok, Self::Error>;
type SerializeStructVariant = serde_core::ser::Impossible<Self::Ok, Self::Error>;
fn serialize_bool(self, _value: bool) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_i8(self, _value: i8) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_i16(self, _value: i16) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_i32(self, _value: i32) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_i64(self, _value: i64) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_u8(self, _value: u8) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_u16(self, _value: u16) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_u32(self, _value: u32) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_u64(self, _value: u64) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_f32(self, _value: f32) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_f64(self, _value: f64) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_char(self, _value: char) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_str(self, v: &str) -> Result<Self::Ok, Self::Error> {
v.parse::<crate::Datetime>()
.map_err(SerializerError::InvalidFormat)
}
fn serialize_bytes(self, _value: &[u8]) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_some<T>(self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
Err(SerializerError::InvalidProtocol)
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_newtype_struct<T>(
self,
_name: &'static str,
_value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
Err(SerializerError::InvalidProtocol)
}
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_core::ser::Serialize + ?Sized,
{
Err(SerializerError::InvalidProtocol)
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_tuple_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
Err(SerializerError::InvalidProtocol)
}
}