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Merge pull request #986 from Marwes/simplify_seed

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refactor: Implement Deserialize of wrapper types with a macro
This commit is contained in:
David Tolnay 2017-07-12 20:36:48 -07:00 committed by GitHub
commit 959fee024f
1 changed files with 21 additions and 92 deletions
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113
serde/src/de/impls.rs
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@ -400,16 +400,22 @@ impl<'de> Deserialize<'de> for CString {
}
}
#[cfg(all(feature = "std", feature = "unstable"))]
impl<'de> Deserialize<'de> for Box<CStr> {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
CString::deserialize(deserializer).map(CString::into_boxed_c_str)
macro_rules! forwarded_impl {
(( $($id: ident),* ), $ty: ty, $func: expr) => {
impl<'de $(, $id : Deserialize<'de>,)*> Deserialize<'de> for $ty {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
Deserialize::deserialize(deserializer).map($func)
}
}
}
}
#[cfg(all(feature = "std", feature = "unstable"))]
forwarded_impl!((), Box<CStr>, CString::into_boxed_c_str);
////////////////////////////////////////////////////////////////////////////////
struct OptionVisitor<T> {
@ -1098,66 +1104,19 @@ impl<'de> Deserialize<'de> for OsString {
////////////////////////////////////////////////////////////////////////////////
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'de, T> Deserialize<'de> for Box<T>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<Box<T>, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(deserializer).map(Box::new)
}
}
forwarded_impl!((T), Box<T>, Box::new);
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'de, T> Deserialize<'de> for Box<[T]>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<Box<[T]>, D::Error>
where
D: Deserializer<'de>,
{
Vec::<T>::deserialize(deserializer).map(Vec::into_boxed_slice)
}
}
forwarded_impl!((T), Box<[T]>, Vec::into_boxed_slice);
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'de> Deserialize<'de> for Box<str> {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
String::deserialize(deserializer).map(String::into_boxed_str)
}
}
forwarded_impl!((), Box<str>, String::into_boxed_str);
#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
impl<'de, T> Deserialize<'de> for Arc<T>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<Arc<T>, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(deserializer).map(Arc::new)
}
}
forwarded_impl!((T), Arc<T>, Arc::new);
#[cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))]
impl<'de, T> Deserialize<'de> for Rc<T>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<Rc<T>, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(deserializer).map(Rc::new)
}
}
forwarded_impl!((T), Rc<T>, Rc::new);
#[cfg(any(feature = "std", feature = "alloc"))]
impl<'de, 'a, T: ?Sized> Deserialize<'de> for Cow<'a, T>
@ -1188,43 +1147,13 @@ where
}
}
impl<'de, T> Deserialize<'de> for RefCell<T>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<RefCell<T>, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(deserializer).map(RefCell::new)
}
}
forwarded_impl!((T), RefCell<T>, RefCell::new);
#[cfg(feature = "std")]
impl<'de, T> Deserialize<'de> for Mutex<T>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<Mutex<T>, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(deserializer).map(Mutex::new)
}
}
forwarded_impl!((T), Mutex<T>, Mutex::new);
#[cfg(feature = "std")]
impl<'de, T> Deserialize<'de> for RwLock<T>
where
T: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<RwLock<T>, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(deserializer).map(RwLock::new)
}
}
forwarded_impl!((T), RwLock<T>, RwLock::new);
////////////////////////////////////////////////////////////////////////////////