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Auto merge of #5452 - phansch:match_def_path_refactor, r=matthiaskrgr

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Refactor: Use rustc's `match_def_path`

This replaces our match_def_path implementation with the rustc one.

Note that we can't just use it in all call sites because of the
`&[&str]` / `&[Symbol]` difference in Clippy/rustc.

changelog: none
This commit is contained in:
bors 2020-04-15 05:42:52 +00:00
commit c6cc07a851
1 changed files with 4 additions and 2 deletions
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6
clippy_lints/src/utils/mod.rs
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@ -1222,8 +1222,10 @@ pub fn is_normalizable<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, param_env: ty::Para
}
pub fn match_def_path<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, did: DefId, syms: &[&str]) -> bool {
let path = cx.get_def_path(did);
path.len() == syms.len() && path.into_iter().zip(syms.iter()).all(|(a, &b)| a.as_str() == b)
// We have to convert `syms` to `&[Symbol]` here because rustc's `match_def_path`
// accepts only that. We should probably move to Symbols in Clippy as well.
let syms = syms.iter().map(|p| Symbol::intern(p)).collect::<Vec<Symbol>>();
cx.match_def_path(did, &syms)
}
/// Returns the list of condition expressions and the list of blocks in a