21 lines
720 B
Rust
21 lines
720 B
Rust
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use crate::utils::{match_trait_method, paths, span_lint_and_help};
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use rustc_hir as hir;
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use rustc_lint::LateContext;
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use super::SKIP_WHILE_NEXT;
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/// lint use of `skip_while().next()` for `Iterators`
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pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>, _skip_while_args: &'tcx [hir::Expr<'_>]) {
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// lint if caller of `.skip_while().next()` is an Iterator
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if match_trait_method(cx, expr, &paths::ITERATOR) {
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span_lint_and_help(
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cx,
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SKIP_WHILE_NEXT,
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expr.span,
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"called `skip_while(<p>).next()` on an `Iterator`",
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None,
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"this is more succinctly expressed by calling `.find(!<p>)` instead",
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);
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}
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}
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