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Delete support for compilers without Iterator::try_for_each

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This commit is contained in:
David Tolnay
2023-07-30 21:03:28 -07:00
parent 4dcf791706
commit 92e91b3557
2 changed files with 4 additions and 36 deletions
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serde/build.rs
-6
View File
@@ -16,12 +16,6 @@ fn main() {
let target = env::var("TARGET").unwrap();
let emscripten = target == "asmjs-unknown-emscripten" || target == "wasm32-unknown-emscripten";
// Iterator::try_for_each stabilized in Rust 1.27:
// https://blog.rust-lang.org/2018/06/21/Rust-1.27.html#library-stabilizations
if minor < 27 {
println!("cargo:rustc-cfg=no_iterator_try_fold");
}
// Non-zero integers stabilized in Rust 1.28:
// https://blog.rust-lang.org/2018/08/02/Rust-1.28.html#library-stabilizations
if minor < 28 {
serde/src/ser/mod.rs
+4 -30
View File
@@ -1279,22 +1279,9 @@ pub trait Serializer: Sized {
I: IntoIterator,
<I as IntoIterator>::Item: Serialize,
{
let iter = iter.into_iter();
let mut iter = iter.into_iter();
let mut serializer = try!(self.serialize_seq(iterator_len_hint(&iter)));
#[cfg(not(no_iterator_try_fold))]
{
let mut iter = iter;
try!(iter.try_for_each(|item| serializer.serialize_element(&item)));
}
#[cfg(no_iterator_try_fold)]
{
for item in iter {
try!(serializer.serialize_element(&item));
}
}
try!(iter.try_for_each(|item| serializer.serialize_element(&item)));
serializer.end()
}
@@ -1330,22 +1317,9 @@ pub trait Serializer: Sized {
V: Serialize,
I: IntoIterator<Item = (K, V)>,
{
let iter = iter.into_iter();
let mut iter = iter.into_iter();
let mut serializer = try!(self.serialize_map(iterator_len_hint(&iter)));
#[cfg(not(no_iterator_try_fold))]
{
let mut iter = iter;
try!(iter.try_for_each(|(key, value)| serializer.serialize_entry(&key, &value)));
}
#[cfg(no_iterator_try_fold)]
{
for (key, value) in iter {
try!(serializer.serialize_entry(&key, &value));
}
}
try!(iter.try_for_each(|(key, value)| serializer.serialize_entry(&key, &value)));
serializer.end()
}