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//@run-rustfix
//@aux-build:proc_macros.rs:proc-macro
#![allow(
clippy::clone_on_copy,
clippy::map_identity,
clippy::unnecessary_lazy_evaluations,
clippy::unnecessary_filter_map,
unused
)]
#![warn(clippy::filter_map_bool_then)]
#[macro_use]
extern crate proc_macros;
#[derive(Clone, PartialEq)]
struct NonCopy;
fn main() {
let v = vec![1, 2, 3, 4, 5, 6];
v.clone().iter().filter_map(|i| (i % 2 == 0).then(|| i + 1));
v.clone().into_iter().filter_map(|i| (i % 2 == 0).then(|| i + 1));
v.clone()
.into_iter()
.filter_map(|i| -> Option<_> { (i % 2 == 0).then(|| i + 1) });
v.clone()
.into_iter()
.filter(|&i| i != 1000)
.filter_map(|i| (i % 2 == 0).then(|| i + 1));
v.iter()
.copied()
.filter(|&i| i != 1000)
.filter_map(|i| (i.clone() % 2 == 0).then(|| i + 1));
// Despite this is non-copy, `is_copy` still returns true (at least now) because it's `&NonCopy`,
// and any `&` is `Copy`. So since we can dereference it in `filter` (since it's then `&&NonCopy`),
// we can lint this and still get the same input type.
// See: <https://doc.rust-lang.org/std/primitive.reference.html#trait-implementations-1>
let v = vec![NonCopy, NonCopy];
v.clone().iter().filter_map(|i| (i == &NonCopy).then(|| i));
// Do not lint
let v = vec![NonCopy, NonCopy];
v.clone().into_iter().filter_map(|i| (i == NonCopy).then(|| i));
// `&mut` is `!Copy`.
let v = vec![NonCopy, NonCopy];
v.clone().iter_mut().filter_map(|i| (i == &mut NonCopy).then(|| i));
external! {
let v = vec![1, 2, 3, 4, 5, 6];
v.clone().into_iter().filter_map(|i| (i % 2 == 0).then(|| i + 1));
}
with_span! {
span
let v = vec![1, 2, 3, 4, 5, 6];
v.clone().into_iter().filter_map(|i| (i % 2 == 0).then(|| i + 1));
}
}
fn issue11309<'a>(iter: impl Iterator<Item = (&'a str, &'a str)>) -> Vec<&'a str> {
iter.filter_map(|(_, s): (&str, _)| Some(s)).collect()
}
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