openharmony/third_party_rust_serde
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More readable MapDeserializer bounds

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This commit is contained in:
David Tolnay 2017-04-13 22:58:47 -07:00
parent 03462b6e39
commit 91a0f248a1
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GPG Key ID: F9BA143B95FF6D82
1 changed files with 20 additions and 20 deletions
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40
serde/src/de/value.rs
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@ -11,6 +11,7 @@
use lib::*;
use de::{self, IntoDeserializer, Expected, SeqVisitor};
use self::private::{First, Second};
////////////////////////////////////////////////////////////////////////////////
@ -641,12 +642,12 @@ pub struct MapDeserializer<'de, I, E>
where
I: Iterator,
I::Item: private::Pair,
<I::Item as private::Pair>::First: IntoDeserializer<'de, E>,
<I::Item as private::Pair>::Second: IntoDeserializer<'de, E>,
First<I::Item>: IntoDeserializer<'de, E>,
Second<I::Item>: IntoDeserializer<'de, E>,
E: de::Error,
{
iter: iter::Fuse<I>,
value: Option<<I::Item as private::Pair>::Second>,
value: Option<Second<I::Item>>,
count: usize,
lifetime: PhantomData<&'de ()>,
error: PhantomData<E>,
@ -656,10 +657,8 @@ impl<'de, I, E> MapDeserializer<'de, I, E>
where
I: Iterator,
I::Item: private::Pair,
<I::Item as private::Pair>::First: IntoDeserializer<'de,
E>,
<I::Item as private::Pair>::Second: IntoDeserializer<'de,
E>,
First<I::Item>: IntoDeserializer<'de, E>,
Second<I::Item>: IntoDeserializer<'de, E>,
E: de::Error,
{
/// Construct a new `MapDeserializer<I, K, V, E>`.
@ -689,9 +688,7 @@ where
}
}
fn next_pair
(&mut self,)
-> Option<(<I::Item as private::Pair>::First, <I::Item as private::Pair>::Second)> {
fn next_pair(&mut self) -> Option<(First<I::Item>, Second<I::Item>)> {
match self.iter.next() {
Some(kv) => {
self.count += 1;
@ -705,8 +702,8 @@ where
impl<'de, I, E> de::Deserializer<'de> for MapDeserializer<'de, I, E>
where I: Iterator,
I::Item: private::Pair,
<I::Item as private::Pair>::First: IntoDeserializer<'de, E>,
<I::Item as private::Pair>::Second: IntoDeserializer<'de, E>,
First<I::Item>: IntoDeserializer<'de, E>,
Second<I::Item>: IntoDeserializer<'de, E>,
E: de::Error
{
type Error = E;
@ -746,8 +743,8 @@ impl<'de, I, E> de::Deserializer<'de> for MapDeserializer<'de, I, E>
impl<'de, I, E> de::MapVisitor<'de> for MapDeserializer<'de, I, E>
where I: Iterator,
I::Item: private::Pair,
<I::Item as private::Pair>::First: IntoDeserializer<'de, E>,
<I::Item as private::Pair>::Second: IntoDeserializer<'de, E>,
First<I::Item>: IntoDeserializer<'de, E>,
Second<I::Item>: IntoDeserializer<'de, E>,
E: de::Error
{
type Error = E;
@ -799,8 +796,8 @@ impl<'de, I, E> de::MapVisitor<'de> for MapDeserializer<'de, I, E>
impl<'de, I, E> de::SeqVisitor<'de> for MapDeserializer<'de, I, E>
where I: Iterator,
I::Item: private::Pair,
<I::Item as private::Pair>::First: IntoDeserializer<'de, E>,
<I::Item as private::Pair>::Second: IntoDeserializer<'de, E>,
First<I::Item>: IntoDeserializer<'de, E>,
Second<I::Item>: IntoDeserializer<'de, E>,
E: de::Error
{
type Error = E;
@ -828,8 +825,8 @@ impl<'de, I, E> de::SeqVisitor<'de> for MapDeserializer<'de, I, E>
impl<'de, I, E> Clone for MapDeserializer<'de, I, E>
where I: Iterator + Clone,
I::Item: private::Pair,
<I::Item as private::Pair>::First: IntoDeserializer<'de, E>,
<I::Item as private::Pair>::Second: IntoDeserializer<'de, E> + Clone,
First<I::Item>: IntoDeserializer<'de, E>,
Second<I::Item>: IntoDeserializer<'de, E> + Clone,
E: de::Error
{
fn clone(&self) -> Self {
@ -849,8 +846,8 @@ impl<'de, I, E> Clone for MapDeserializer<'de, I, E>
impl<'de, I, E> Debug for MapDeserializer<'de, I, E>
where I: Iterator + Debug,
I::Item: private::Pair,
<I::Item as private::Pair>::First: IntoDeserializer<'de, E>,
<I::Item as private::Pair>::Second: IntoDeserializer<'de, E> + Debug,
First<I::Item>: IntoDeserializer<'de, E>,
Second<I::Item>: IntoDeserializer<'de, E> + Debug,
E: de::Error
{
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
@ -1098,4 +1095,7 @@ mod private {
self
}
}
pub type First<T> = <T as Pair>::First;
pub type Second<T> = <T as Pair>::Second;
}