From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- third_party/rust/http/src/convert.rs | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 third_party/rust/http/src/convert.rs (limited to 'third_party/rust/http/src/convert.rs') diff --git a/third_party/rust/http/src/convert.rs b/third_party/rust/http/src/convert.rs new file mode 100644 index 0000000000..aeee2219a9 --- /dev/null +++ b/third_party/rust/http/src/convert.rs @@ -0,0 +1,17 @@ +macro_rules! if_downcast_into { + ($in_ty:ty, $out_ty:ty, $val:ident, $body:expr) => ({ + if std::any::TypeId::of::<$in_ty>() == std::any::TypeId::of::<$out_ty>() { + // Store the value in an `Option` so we can `take` + // it after casting to `&mut dyn Any`. + let mut slot = Some($val); + // Re-write the `$val` ident with the downcasted value. + let $val = (&mut slot as &mut dyn std::any::Any) + .downcast_mut::>() + .unwrap() + .take() + .unwrap(); + // Run the $body in scope of the replaced val. + $body + } + }) +} -- cgit v1.2.3