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rustdoc-search: parse and search with ML-style HOF

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Option::map, for example, looks like this:

    option<t>, (t -> u) -> option<u>

This syntax searches all of the HOFs in Rust: traits Fn, FnOnce,
and FnMut, and bare fn primitives.
This commit is contained in:
Michael Howell 2024-01-06 13:17:51 -07:00
parent 5aad51d015
commit 7f427f86bd
7 changed files with 649 additions and 49 deletions
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12
tests/rustdoc-js/hof.rs Normal file
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@ -0,0 +1,12 @@
#![feature(never_type)]
pub struct First<T>(T);
pub struct Second<T>(T);
pub struct Third<T>(T);
pub fn fn_ptr(_: fn (First<u32>) -> !, _: bool) {}
pub fn fn_once(_: impl FnOnce (Second<u32>) -> !, _: u8) {}
pub fn fn_mut(_: impl FnMut (Third<u32>) -> !, _: i8) {}
pub fn fn_(_: impl Fn (u32) -> !, _: char) {}
pub fn multiple(_: impl Fn(&'static str, &'static str) -> i8) {}