| // Check that we are flagged for ignoring `must_use` parallel adaptors. |
| // (unfortunately there's no error code for `unused_must_use`) |
| |
| macro_rules! must_use { |
| ($( $name:ident #[$expr:meta] )*) => {$( |
| /// First sanity check that the expression is OK. |
| /// |
| /// ``` |
| /// #![deny(unused_must_use)] |
| /// |
| /// use rayon::prelude::*; |
| /// |
| /// let v: Vec<_> = (0..100).map(Some).collect(); |
| /// let _ = |
| #[$expr] |
| /// ``` |
| /// |
| /// Now trigger the `must_use`. |
| /// |
| /// ```compile_fail |
| /// #![deny(unused_must_use)] |
| /// |
| /// use rayon::prelude::*; |
| /// |
| /// let v: Vec<_> = (0..100).map(Some).collect(); |
| #[$expr] |
| /// ``` |
| mod $name {} |
| )*} |
| } |
| |
| must_use! { |
| step_by /** v.par_iter().step_by(2); */ |
| chain /** v.par_iter().chain(&v); */ |
| chunks /** v.par_iter().chunks(2); */ |
| cloned /** v.par_iter().cloned(); */ |
| copied /** v.par_iter().copied(); */ |
| enumerate /** v.par_iter().enumerate(); */ |
| filter /** v.par_iter().filter(|_| true); */ |
| filter_map /** v.par_iter().filter_map(|x| *x); */ |
| flat_map /** v.par_iter().flat_map(|x| *x); */ |
| flat_map_iter /** v.par_iter().flat_map_iter(|x| *x); */ |
| flatten /** v.par_iter().flatten(); */ |
| flatten_iter /** v.par_iter().flatten_iter(); */ |
| fold /** v.par_iter().fold(|| 0, |x, _| x); */ |
| fold_with /** v.par_iter().fold_with(0, |x, _| x); */ |
| try_fold /** v.par_iter().try_fold(|| 0, |x, _| Some(x)); */ |
| try_fold_with /** v.par_iter().try_fold_with(0, |x, _| Some(x)); */ |
| inspect /** v.par_iter().inspect(|_| {}); */ |
| interleave /** v.par_iter().interleave(&v); */ |
| interleave_shortest /** v.par_iter().interleave_shortest(&v); */ |
| intersperse /** v.par_iter().intersperse(&None); */ |
| map /** v.par_iter().map(|x| x); */ |
| map_with /** v.par_iter().map_with(0, |_, x| x); */ |
| map_init /** v.par_iter().map_init(|| 0, |_, x| x); */ |
| panic_fuse /** v.par_iter().panic_fuse(); */ |
| positions /** v.par_iter().positions(|_| true); */ |
| rev /** v.par_iter().rev(); */ |
| skip /** v.par_iter().skip(1); */ |
| take /** v.par_iter().take(1); */ |
| update /** v.par_iter().update(|_| {}); */ |
| while_some /** v.par_iter().cloned().while_some(); */ |
| with_max_len /** v.par_iter().with_max_len(1); */ |
| with_min_len /** v.par_iter().with_min_len(1); */ |
| zip /** v.par_iter().zip(&v); */ |
| zip_eq /** v.par_iter().zip_eq(&v); */ |
| } |