user0/rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

6459: Check for redundant matches! with Ready, Pending, V4, V6

Browse source
This commit is contained in:
Florian Brucker 2023-12-27 18:53:48 +01:00
parent c689d32a90
commit ebc0588937
7 changed files with 98 additions and 56 deletions
Download patch file Download diff file Expand all files Collapse all files

42
clippy_lints/src/matches/redundant_pattern_match.rs
View file

@ -411,31 +411,25 @@ fn get_good_method<'tcx>(
path_left: &QPath<'_>,
) -> Option<(&'static str, Option<&'tcx Guard<'tcx>>)> {
if let Some(name) = get_ident(path_left) {
return match name.as_str() {
"Ok" => {
find_good_method_for_matches_macro(cx, arms, path_left, Item::Lang(ResultOk), "is_ok()", "is_err()")
},
"Err" => {
find_good_method_for_matches_macro(cx, arms, path_left, Item::Lang(ResultErr), "is_err()", "is_ok()")
},
"Some" => find_good_method_for_matches_macro(
cx,
arms,
path_left,
Item::Lang(OptionSome),
"is_some()",
"is_none()",
),
"None" => find_good_method_for_matches_macro(
cx,
arms,
path_left,
Item::Lang(OptionNone),
"is_none()",
"is_some()",
),
_ => None,
let (expected_item_left, should_be_left, should_be_right) = match name.as_str() {
"Ok" => (Item::Lang(ResultOk), "is_ok()", "is_err()"),
"Err" => (Item::Lang(ResultErr), "is_err()", "is_ok()"),
"Some" => (Item::Lang(OptionSome), "is_some()", "is_none()"),
"None" => (Item::Lang(OptionNone), "is_none()", "is_some()"),
"Ready" => (Item::Lang(PollReady), "is_ready()", "is_pending()"),
"Pending" => (Item::Lang(PollPending), "is_pending()", "is_ready()"),
"V4" => (Item::Diag(sym::IpAddr, sym!(V4)), "is_ipv4()", "is_ipv6()"),
"V6" => (Item::Diag(sym::IpAddr, sym!(V6)), "is_ipv6()", "is_ipv4()"),
_ => return None,
};
return find_good_method_for_matches_macro(
cx,
arms,
path_left,
expected_item_left,
should_be_left,
should_be_right,
);
}
None
}