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format: serde: avoid redundant () for some types

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This commit is contained in:
François Laignel 2018-07-28 17:23:45 +02:00 committed by Sebastian Dröge
parent dfc961679f
commit 9f2f684188
4 changed files with 136 additions and 101 deletions
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99
gstreamer/src/format.rs
View file

@ -24,13 +24,10 @@ pub enum GenericFormattedValue {
} }
#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)] #[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)]
#[cfg_attr(feature = "ser_de", derive(Serialize, Deserialize))]
pub struct Default(pub Option<u64>); pub struct Default(pub Option<u64>);
#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)] #[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)]
#[cfg_attr(feature = "ser_de", derive(Serialize, Deserialize))]
pub struct Bytes(pub Option<u64>); pub struct Bytes(pub Option<u64>);
#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)] #[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)]
#[cfg_attr(feature = "ser_de", derive(Serialize, Deserialize))]
pub struct Buffers(pub Option<u64>); pub struct Buffers(pub Option<u64>);
pub type Time = ClockTime; pub type Time = ClockTime;
@ -486,99 +483,3 @@ impl_format_value_traits!(Default, Default, Default);
impl_format_value_traits!(Bytes, Bytes, Bytes); impl_format_value_traits!(Bytes, Bytes, Bytes);
impl_format_value_traits!(ClockTime, Time, Time); impl_format_value_traits!(ClockTime, Time, Time);
impl_format_value_traits!(Buffers, Buffers, Buffers); impl_format_value_traits!(Buffers, Buffers, Buffers);
#[cfg(test)]
mod tests {
#[cfg(feature = "ser_de")]
#[test]
fn test_serialize() {
extern crate ron;
extern crate serde_json;
use super::Buffers;
use super::Bytes;
use super::Default;
use ClockTime;
use Format;
use GenericFormattedValue;
::init().unwrap();
let mut pretty_config = ron::ser::PrettyConfig::default();
pretty_config.new_line = "".to_string();
let value = GenericFormattedValue::Undefined(42);
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Undefined(42)".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Undefined\":42}".to_owned(), res);
let value = GenericFormattedValue::Default(Default(Some(42)));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Default((Some(42)))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Default\":42}".to_owned(), res);
let value = GenericFormattedValue::Default(Default(None));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Default((None))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Default\":null}".to_owned(), res);
let value = GenericFormattedValue::Bytes(Bytes(Some(42)));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Bytes((Some(42)))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Bytes\":42}".to_owned(), res);
let value = GenericFormattedValue::Time(ClockTime::from_nseconds(42_123_456_789));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Time(Some(42123456789))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Time\":42123456789}".to_owned(), res);
let value = GenericFormattedValue::Buffers(Buffers(Some(42)));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Buffers((Some(42)))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Buffers\":42}".to_owned(), res);
let value = GenericFormattedValue::Percent(Some(42));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Percent(Some(42))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Percent\":42}".to_owned(), res);
let value = GenericFormattedValue::Other(Format::Percent, 42);
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Other(Percent, 42)".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Other\":[\"Percent\",42]}".to_owned(), res);
let value = GenericFormattedValue::Other(Format::__Unknown(7), 42);
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Other(__Unknown(7), 42)".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Other\":[{\"__Unknown\":7},42]}".to_owned(), res);
}
#[cfg(feature = "ser_de")]
#[test]
fn test_deserialize() {
extern crate ron;
extern crate serde_json;
use Format;
use GenericFormattedValue;
::init().unwrap();
let format_ron = "Other(Percent, 42)";
let format: GenericFormattedValue = ron::de::from_str(format_ron).unwrap();
assert_eq!(format, GenericFormattedValue::Other(Format::Percent, 42));
let format_json = "{\"Other\":[\"Percent\",42]}";
let format: GenericFormattedValue = serde_json::from_str(format_json).unwrap();
assert_eq!(format, GenericFormattedValue::Other(Format::Percent, 42));
}
}

132
gstreamer/src/format_serde.rs Normal file
View file

@ -0,0 +1,132 @@
// Copyright (C) 2018 François Laignel <fengalin@free.fr>
//
// 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.
use serde::de::{Deserialize, Deserializer};
use serde::ser::{Serialize, Serializer};
use format::{Buffers, Bytes, Default};
// Manual implementation for some types that would otherwise yield representations such as:
// "Default((Some(42)))"
macro_rules! impl_ser_de(
($t:ident) => {
impl Serialize for $t {
fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
self.0.serialize(serializer)
}
}
impl<'de> Deserialize<'de> for $t {
fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
Option::<u64>::deserialize(deserializer).map(|value| $t(value))
}
}
}
);
impl_ser_de!(Buffers);
impl_ser_de!(Bytes);
impl_ser_de!(Default);
#[cfg(test)]
mod tests {
extern crate ron;
extern crate serde_json;
use format::Default;
use Format;
use GenericFormattedValue;
#[test]
fn test_serialize() {
use format::Buffers;
use format::Bytes;
use ClockTime;
::init().unwrap();
let mut pretty_config = ron::ser::PrettyConfig::default();
pretty_config.new_line = "".to_string();
let value = GenericFormattedValue::Undefined(42);
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Undefined(42)".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Undefined\":42}".to_owned(), res);
let value = GenericFormattedValue::Default(Default(Some(42)));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Default(Some(42))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Default\":42}".to_owned(), res);
let value = GenericFormattedValue::Default(Default(None));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Default(None)".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Default\":null}".to_owned(), res);
let value = GenericFormattedValue::Bytes(Bytes(Some(42)));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Bytes(Some(42))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Bytes\":42}".to_owned(), res);
let value = GenericFormattedValue::Time(ClockTime::from_nseconds(42_123_456_789));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Time(Some(42123456789))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Time\":42123456789}".to_owned(), res);
let value = GenericFormattedValue::Buffers(Buffers(Some(42)));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Buffers(Some(42))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Buffers\":42}".to_owned(), res);
let value = GenericFormattedValue::Percent(Some(42));
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Percent(Some(42))".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Percent\":42}".to_owned(), res);
let value = GenericFormattedValue::Other(Format::Percent, 42);
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Other(Percent, 42)".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Other\":[\"Percent\",42]}".to_owned(), res);
let value = GenericFormattedValue::Other(Format::__Unknown(7), 42);
let res = ron::ser::to_string_pretty(&value, pretty_config.clone());
assert_eq!(Ok("Other(__Unknown(7), 42)".to_owned()), res);
let res = serde_json::to_string(&value).unwrap();
assert_eq!("{\"Other\":[{\"__Unknown\":7},42]}".to_owned(), res);
}
#[test]
fn test_deserialize() {
::init().unwrap();
let format_ron = "Default(Some(42))";
let format: GenericFormattedValue = ron::de::from_str(format_ron).unwrap();
assert_eq!(format, GenericFormattedValue::Default(Default(Some(42))));
let format_json = "{\"Default\":42}";
let format: GenericFormattedValue = serde_json::from_str(format_json).unwrap();
assert_eq!(format, GenericFormattedValue::Default(Default(Some(42))));
let format_ron = "Other(Percent, 42)";
let format: GenericFormattedValue = ron::de::from_str(format_ron).unwrap();
assert_eq!(format, GenericFormattedValue::Other(Format::Percent, 42));
let format_json = "{\"Other\":[\"Percent\",42]}";
let format: GenericFormattedValue = serde_json::from_str(format_json).unwrap();
assert_eq!(format, GenericFormattedValue::Other(Format::Percent, 42));
}
}

2
gstreamer/src/lib.rs
View file

@ -214,6 +214,8 @@ pub use typefind::*;
pub mod format; pub mod format;
pub use format::{FormattedValue, GenericFormattedValue, SpecificFormattedValue}; pub use format::{FormattedValue, GenericFormattedValue, SpecificFormattedValue};
#[cfg(feature = "ser_de")]
pub(crate) mod format_serde;
mod segment; mod segment;
pub use segment::*; pub use segment::*;

4
gstreamer/src/value_serde.rs
View file

@ -55,7 +55,7 @@ impl<'a> Serialize for Fraction {
impl<'de> Deserialize<'de> for Fraction { impl<'de> Deserialize<'de> for Fraction {
fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> { fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
Rational32::deserialize(deserializer) Rational32::deserialize(deserializer)
.and_then(|rational| Ok(Fraction::new(*rational.numer(), *rational.denom()))) .map(|rational| Fraction::new(*rational.numer(), *rational.denom()))
} }
} }
@ -165,7 +165,7 @@ macro_rules! de_value(
{ {
let value = $seq let value = $seq
.next_element::<$t>()? .next_element::<$t>()?
.and_then(|base_value| Some(base_value.to_value())); .map(|base_value| base_value.to_value());
Ok(value) Ok(value)
} }
); );