mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-05-03 00:48:47 +00:00
293 lines
10 KiB
Rust
293 lines
10 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
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#![allow(clippy::upper_case_acronyms)]
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use glib::{
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translate::{FromGlib, IntoGlib},
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value::{ToValue, ToValueOptional},
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StaticType,
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};
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use serde::{
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de::{Deserialize, Deserializer, Error},
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ser,
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ser::{Serialize, Serializer},
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};
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use crate::DateTime;
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#[derive(serde::Serialize, serde::Deserialize)]
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enum DateTimeVariants {
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Y(i32),
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YM(i32, i32),
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YMD(i32, i32, i32),
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YMDhmTz(i32, i32, i32, i32, i32, f32),
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YMDhmsTz(i32, i32, i32, i32, i32, f64, f32),
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}
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// Note: ser / de for `glib::Date` should be implemented in the `glib` crate
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// However, there is no `serde` feature in `glib` right now. The limitation is that
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// `Date` fields can only be ser / de when they are used in `Value`s (which implies
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// `Array`s, `List`s, `Structure` fields and `Tag`s)
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pub(crate) struct Date(glib::Date);
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impl From<glib::Date> for Date {
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#[inline]
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fn from(glib_date: glib::Date) -> Self {
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skip_assert_initialized!();
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Date(glib_date)
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}
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}
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impl ToValue for Date {
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fn to_value(&self) -> glib::Value {
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self.0.to_value()
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}
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fn value_type(&self) -> glib::Type {
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glib::Date::static_type()
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}
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}
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impl ToValueOptional for Date {
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fn to_value_optional(s: Option<&Self>) -> glib::Value {
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skip_assert_initialized!();
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s.map(|s| &s.0).to_value()
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}
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}
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impl StaticType for Date {
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#[inline]
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fn static_type() -> glib::Type {
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glib::Date::static_type()
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}
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}
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impl From<Date> for glib::Value {
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#[inline]
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fn from(v: Date) -> glib::Value {
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skip_assert_initialized!();
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v.0.into()
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}
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}
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impl Serialize for Date {
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fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
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DateTimeVariants::YMD(
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self.0.year() as i32,
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self.0.month().into_glib(),
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self.0.day() as i32,
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)
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.serialize(serializer)
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}
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}
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impl Serialize for DateTime {
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fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
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let variant = if self.has_second() {
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DateTimeVariants::YMDhmsTz(
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self.year(),
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self.month().unwrap(),
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self.day().unwrap(),
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self.hour().unwrap(),
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self.minute().unwrap(),
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f64::from(self.second().unwrap())
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+ f64::from(self.microsecond().unwrap()) / 1_000_000f64,
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self.time_zone_offset().unwrap(),
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)
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} else if self.has_time() {
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DateTimeVariants::YMDhmTz(
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self.year(),
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self.month().unwrap(),
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self.day().unwrap(),
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self.hour().unwrap(),
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self.minute().unwrap(),
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self.time_zone_offset().unwrap(),
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)
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} else if self.has_day() {
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DateTimeVariants::YMD(self.year(), self.month().unwrap(), self.day().unwrap())
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} else if self.has_month() {
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DateTimeVariants::YM(self.year(), self.month().unwrap())
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} else if self.has_year() {
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DateTimeVariants::Y(self.year())
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} else {
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return Err(ser::Error::custom(format!(
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"no parts could be found in `DateTime` {self}",
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)));
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};
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variant.serialize(serializer)
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}
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}
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impl TryFrom<DateTimeVariants> for Date {
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type Error = glib::BoolError;
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fn try_from(dt_variant: DateTimeVariants) -> Result<Self, Self::Error> {
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skip_assert_initialized!();
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match dt_variant {
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DateTimeVariants::YMD(y, m, d) => {
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let month = unsafe { glib::DateMonth::from_glib(m) };
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if let glib::DateMonth::__Unknown(_) = month {
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return Err(glib::bool_error!("Out of range `month` for `Date`"));
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}
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Ok(Date(glib::Date::from_dmy(
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d.try_into()
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.map_err(|_| glib::bool_error!("Out of range `day` for `Date`"))?,
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month,
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y.try_into()
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.map_err(|_| glib::bool_error!("Out of range `year` for `Date`"))?,
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)?))
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}
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_ => Err(glib::bool_error!(
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"Incompatible variant for `Date` (expecting \"YMD\")"
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)),
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}
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}
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}
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impl<'de> Deserialize<'de> for Date {
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
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skip_assert_initialized!();
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DateTimeVariants::deserialize(deserializer)
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.and_then(|dt_variant| dt_variant.try_into().map_err(D::Error::custom))
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}
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}
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#[allow(clippy::many_single_char_names)]
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impl TryFrom<DateTimeVariants> for DateTime {
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type Error = glib::BoolError;
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fn try_from(dt_variant: DateTimeVariants) -> Result<Self, Self::Error> {
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skip_assert_initialized!();
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match dt_variant {
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DateTimeVariants::Y(y) => DateTime::from_y(y),
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DateTimeVariants::YM(y, m) => DateTime::from_ym(y, m),
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DateTimeVariants::YMD(y, m, d) => DateTime::from_ymd(y, m, d),
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DateTimeVariants::YMDhmTz(y, m, d, h, mn, tz) => {
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DateTime::new(tz, y, m, d, h, mn, None)
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}
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DateTimeVariants::YMDhmsTz(y, m, d, h, mn, s, tz) => {
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DateTime::new(tz, y, m, d, h, mn, s)
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}
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}
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}
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}
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impl<'de> Deserialize<'de> for DateTime {
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
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skip_assert_initialized!();
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DateTimeVariants::deserialize(deserializer)
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.and_then(|dt_variant| dt_variant.try_into().map_err(D::Error::custom))
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}
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}
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#[cfg(test)]
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mod tests {
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use crate::DateTime;
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#[test]
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fn test_serialize() {
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crate::init().unwrap();
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let pretty_config = ron::ser::PrettyConfig::new().new_line("".to_string());
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let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap();
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let res = ron::ser::to_string_pretty(&datetime, pretty_config.clone());
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assert_eq!(
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Ok("YMDhmsTz(2018, 5, 28, 16, 6, 42.123456, 2.0)".to_owned()),
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res,
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);
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let res = serde_json::to_string(&datetime).unwrap();
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assert_eq!(
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r#"{"YMDhmsTz":[2018,5,28,16,6,42.123456,2.0]}"#.to_owned(),
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res
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);
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let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, None).unwrap();
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let res = ron::ser::to_string_pretty(&datetime, pretty_config.clone());
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assert_eq!(Ok("YMDhmTz(2018, 5, 28, 16, 6, 2.0)".to_owned()), res,);
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let datetime = DateTime::from_ymd(2018, 5, 28).unwrap();
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let res = ron::ser::to_string_pretty(&datetime, pretty_config.clone());
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assert_eq!(Ok("YMD(2018, 5, 28)".to_owned()), res);
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let datetime = DateTime::from_ym(2018, 5).unwrap();
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let res = ron::ser::to_string_pretty(&datetime, pretty_config.clone());
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assert_eq!(Ok("YM(2018, 5)".to_owned()), res);
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let datetime = DateTime::from_y(2018).unwrap();
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let res = ron::ser::to_string_pretty(&datetime, pretty_config);
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assert_eq!(Ok("Y(2018)".to_owned()), res);
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}
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#[test]
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fn test_deserialize() {
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crate::init().unwrap();
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let datetime_ron = "YMDhmsTz(2018, 5, 28, 16, 6, 42.123456, 2)";
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let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
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assert_eq!(
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datetime_de,
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DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap()
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);
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let datetime_json = r#"{"YMDhmsTz":[2018,5,28,16,6,42.123456,2.0]}"#;
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let datetime_de: DateTime = serde_json::from_str(datetime_json).unwrap();
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assert_eq!(
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datetime_de,
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DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap()
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);
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let datetime_ron = "YMDhmTz(2018, 5, 28, 16, 6, 2)";
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let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
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assert_eq!(
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datetime_de,
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DateTime::new(2f32, 2018, 5, 28, 16, 6, None).unwrap()
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);
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let datetime_ron = "YMD(2018, 5, 28)";
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let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
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assert_eq!(datetime_de, DateTime::from_ymd(2018, 5, 28).unwrap());
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let datetime_ron = "YM(2018, 5)";
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let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
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assert_eq!(datetime_de, DateTime::from_ym(2018, 5).unwrap());
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let datetime_ron = "Y(2018)";
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let datetime_de: DateTime = ron::de::from_str(datetime_ron).unwrap();
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assert_eq!(datetime_de, DateTime::from_y(2018).unwrap());
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}
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#[test]
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fn test_serde_roundtrip() {
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crate::init().unwrap();
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let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, 42.123_456f64).unwrap();
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let datetime_ser = ron::ser::to_string(&datetime).unwrap();
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let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
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assert_eq!(datetime_de, datetime);
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let datetime = DateTime::new(2f32, 2018, 5, 28, 16, 6, None).unwrap();
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let datetime_ser = ron::ser::to_string(&datetime).unwrap();
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let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
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assert_eq!(datetime_de, datetime);
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let datetime = DateTime::from_ymd(2018, 5, 28).unwrap();
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let datetime_ser = ron::ser::to_string(&datetime).unwrap();
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let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
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assert_eq!(datetime_de, datetime);
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let datetime = DateTime::from_ym(2018, 5).unwrap();
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let datetime_ser = ron::ser::to_string(&datetime).unwrap();
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let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
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assert_eq!(datetime_de, datetime);
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let datetime = DateTime::from_y(2018).unwrap();
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let datetime_ser = ron::ser::to_string(&datetime).unwrap();
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let datetime_de: DateTime = ron::de::from_str(datetime_ser.as_str()).unwrap();
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assert_eq!(datetime_de, datetime);
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}
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}
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