Mirrors/rust-clippy
2
0
Fork 0
mirror of https://github.com/rust-lang/rust-clippy synced 2024-11-24 13:43:17 +00:00
Code Issues Projects Releases Packages Wiki Activity

Refactor utils on checking attribute

Browse source 
Moved out reusable pieces from `is_automatically_derived` and
`any_parent_is_automatically_derived`.
This commit is contained in:
dswij 2021-10-25 11:59:18 +08:00
parent 2e17035714
commit 847a95b682
1 changed files with 12 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
clippy_utils/src/lib.rs
View file

@ -1402,7 +1402,7 @@ pub fn recurse_or_patterns<'tcx, F: FnMut(&'tcx Pat<'tcx>)>(pat: &'tcx Pat<'tcx>
/// Checks for the `#[automatically_derived]` attribute all `#[derive]`d
/// implementations have.
pub fn is_automatically_derived(attrs: &[ast::Attribute]) -> bool {
attrs.iter().any(|attr| attr.has_name(sym::automatically_derived))
has_attr(attrs, sym::automatically_derived)
}
/// Remove blocks around an expression.
@ -1524,20 +1524,29 @@ pub fn clip(tcx: TyCtxt<'_>, u: u128, ity: rustc_ty::UintTy) -> u128 {
(u << amt) >> amt
}
pub fn any_parent_is_automatically_derived(tcx: TyCtxt<'_>, node: HirId) -> bool {
pub fn has_attr(attrs: &[ast::Attribute], symbol: Symbol) -> bool {
attrs.iter().any(|attr| attr.has_name(symbol))
}
pub fn any_parent_has_attr(tcx: TyCtxt<'_>, node: HirId, symbol: Symbol) -> bool {
let map = &tcx.hir();
let mut prev_enclosing_node = None;
let mut enclosing_node = node;
while Some(enclosing_node) != prev_enclosing_node {
if is_automatically_derived(map.attrs(enclosing_node)) {
if has_attr(map.attrs(enclosing_node), symbol) {
return true;
}
prev_enclosing_node = Some(enclosing_node);
enclosing_node = map.get_parent_item(enclosing_node);
}
false
}
pub fn any_parent_is_automatically_derived(tcx: TyCtxt<'_>, node: HirId) -> bool {
any_parent_has_attr(tcx, node, sym::automatically_derived)
}
/// Matches a function call with the given path and returns the arguments.
///
/// Usage: