diff options
Diffstat (limited to 'third_party/rust/serde/src/de/impls.rs')
| -rw-r--r-- | third_party/rust/serde/src/de/impls.rs | 119 |
1 files changed, 112 insertions, 7 deletions
diff --git a/third_party/rust/serde/src/de/impls.rs b/third_party/rust/serde/src/de/impls.rs index 413c997afd..140878aec6 100644 --- a/third_party/rust/serde/src/de/impls.rs +++ b/third_party/rust/serde/src/de/impls.rs @@ -104,6 +104,28 @@ macro_rules! impl_deserialize_num { deserializer.$deserialize(NonZeroVisitor) } } + + #[cfg(not(no_core_num_saturating))] + impl<'de> Deserialize<'de> for Saturating<$primitive> { + fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> + where + D: Deserializer<'de>, + { + struct SaturatingVisitor; + + impl<'de> Visitor<'de> for SaturatingVisitor { + type Value = Saturating<$primitive>; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("integer with support for saturating semantics") + } + + $($($method!(saturating $primitive $val : $visit);)*)* + } + + deserializer.$deserialize(SaturatingVisitor) + } + } }; ($primitive:ident, $deserialize:ident $($method:ident!($($val:ident : $visit:ident)*);)*) => { @@ -154,6 +176,15 @@ macro_rules! num_self { } } }; + + (saturating $primitive:ident $ty:ident : $visit:ident) => { + fn $visit<E>(self, v: $ty) -> Result<Self::Value, E> + where + E: Error, + { + Ok(Saturating(v)) + } + }; } macro_rules! num_as_self { @@ -179,6 +210,15 @@ macro_rules! num_as_self { } } }; + + (saturating $primitive:ident $ty:ident : $visit:ident) => { + fn $visit<E>(self, v: $ty) -> Result<Self::Value, E> + where + E: Error, + { + Ok(Saturating(v as $primitive)) + } + }; } macro_rules! num_as_copysign_self { @@ -235,6 +275,21 @@ macro_rules! int_to_int { Err(Error::invalid_value(Unexpected::Signed(v as i64), &self)) } }; + + (saturating $primitive:ident $ty:ident : $visit:ident) => { + fn $visit<E>(self, v: $ty) -> Result<Self::Value, E> + where + E: Error, + { + if (v as i64) < $primitive::MIN as i64 { + Ok(Saturating($primitive::MIN)) + } else if ($primitive::MAX as i64) < v as i64 { + Ok(Saturating($primitive::MAX)) + } else { + Ok(Saturating(v as $primitive)) + } + } + }; } macro_rules! int_to_uint { @@ -265,6 +320,21 @@ macro_rules! int_to_uint { Err(Error::invalid_value(Unexpected::Signed(v as i64), &self)) } }; + + (saturating $primitive:ident $ty:ident : $visit:ident) => { + fn $visit<E>(self, v: $ty) -> Result<Self::Value, E> + where + E: Error, + { + if v < 0 { + Ok(Saturating(0)) + } else if ($primitive::MAX as u64) < v as u64 { + Ok(Saturating($primitive::MAX)) + } else { + Ok(Saturating(v as $primitive)) + } + } + }; } macro_rules! uint_to_self { @@ -295,6 +365,19 @@ macro_rules! uint_to_self { Err(Error::invalid_value(Unexpected::Unsigned(v as u64), &self)) } }; + + (saturating $primitive:ident $ty:ident : $visit:ident) => { + fn $visit<E>(self, v: $ty) -> Result<Self::Value, E> + where + E: Error, + { + if v as u64 <= $primitive::MAX as u64 { + Ok(Saturating(v as $primitive)) + } else { + Ok(Saturating($primitive::MAX)) + } + } + }; } impl_deserialize_num! { @@ -427,6 +510,21 @@ macro_rules! num_128 { } } }; + + (saturating $primitive:ident $ty:ident : $visit:ident) => { + fn $visit<E>(self, v: $ty) -> Result<Self::Value, E> + where + E: Error, + { + if (v as i128) < $primitive::MIN as i128 { + Ok(Saturating($primitive::MIN)) + } else if ($primitive::MAX as u128) < v as u128 { + Ok(Saturating($primitive::MAX)) + } else { + Ok(Saturating(v as $primitive)) + } + } + }; } impl_deserialize_num! { @@ -852,7 +950,10 @@ struct PhantomDataVisitor<T: ?Sized> { marker: PhantomData<T>, } -impl<'de, T: ?Sized> Visitor<'de> for PhantomDataVisitor<T> { +impl<'de, T> Visitor<'de> for PhantomDataVisitor<T> +where + T: ?Sized, +{ type Value = PhantomData<T>; fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { @@ -868,7 +969,10 @@ impl<'de, T: ?Sized> Visitor<'de> for PhantomDataVisitor<T> { } } -impl<'de, T: ?Sized> Deserialize<'de> for PhantomData<T> { +impl<'de, T> Deserialize<'de> for PhantomData<T> +where + T: ?Sized, +{ fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer<'de>, @@ -1877,9 +1981,9 @@ forwarded_impl! { #[cfg(any(feature = "std", feature = "alloc"))] #[cfg_attr(doc_cfg, doc(cfg(any(feature = "std", feature = "alloc"))))] -impl<'de, 'a, T: ?Sized> Deserialize<'de> for Cow<'a, T> +impl<'de, 'a, T> Deserialize<'de> for Cow<'a, T> where - T: ToOwned, + T: ?Sized + ToOwned, T::Owned: Deserialize<'de>, { #[inline] @@ -1902,7 +2006,7 @@ where doc_cfg, doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))) )] -impl<'de, T: ?Sized> Deserialize<'de> for RcWeak<T> +impl<'de, T> Deserialize<'de> for RcWeak<T> where T: Deserialize<'de>, { @@ -1924,7 +2028,7 @@ where doc_cfg, doc(cfg(all(feature = "rc", any(feature = "std", feature = "alloc")))) )] -impl<'de, T: ?Sized> Deserialize<'de> for ArcWeak<T> +impl<'de, T> Deserialize<'de> for ArcWeak<T> where T: Deserialize<'de>, { @@ -1945,8 +2049,9 @@ macro_rules! box_forwarded_impl { $t:ident ) => { $(#[$attr])* - impl<'de, T: ?Sized> Deserialize<'de> for $t<T> + impl<'de, T> Deserialize<'de> for $t<T> where + T: ?Sized, Box<T>: Deserialize<'de>, { fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> |