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use check_path instead of check_expr

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flip1995 2019-02-28 17:34:01 +01:00
parent 157e7974af
commit 16acf7d618
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GPG Key ID: 693086869D506637
1 changed files with 27 additions and 49 deletions
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26
src/librustc/lint/internal.rs
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@ -1,7 +1,7 @@
//! Some lints that are only useful in the compiler or crates that use compiler internals, such as //! Some lints that are only useful in the compiler or crates that use compiler internals, such as
//! Clippy. //! Clippy.
use crate::hir::{Expr, ExprKind, PatKind, Path, QPath, Ty, TyKind}; use crate::hir::{HirId, Path, QPath, Ty, TyKind};
use crate::lint::{ use crate::lint::{
EarlyContext, EarlyLintPass, LateContext, LateLintPass, LintArray, LintContext, LintPass, EarlyContext, EarlyLintPass, LateContext, LateLintPass, LintArray, LintContext, LintPass,
}; };
@ -81,27 +81,7 @@ impl LintPass for TyKindUsage {
} }
impl<'a, 'tcx> LateLintPass<'a, 'tcx> for TyKindUsage { impl<'a, 'tcx> LateLintPass<'a, 'tcx> for TyKindUsage {
fn check_expr(&mut self, cx: &LateContext<'_, '_>, expr: &'tcx Expr) { fn check_path(&mut self, cx: &LateContext<'_, '_>, path: &'tcx Path, _: HirId) {
let qpaths = match &expr.node {
ExprKind::Match(_, arms, _) => {
let mut qpaths = vec![];
for arm in arms {
for pat in &arm.pats {
match &pat.node {
PatKind::Path(qpath) | PatKind::TupleStruct(qpath, ..) => {
qpaths.push(qpath)
}
_ => (),
}
}
}
qpaths
}
ExprKind::Path(qpath) => vec![qpath],
_ => vec![],
};
for qpath in qpaths {
if let QPath::Resolved(_, path) = qpath {
let segments_iter = path.segments.iter().rev().skip(1).rev(); let segments_iter = path.segments.iter().rev().skip(1).rev();
if let Some(last) = segments_iter.clone().last() { if let Some(last) = segments_iter.clone().last() {
@ -134,8 +114,6 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for TyKindUsage {
} }
} }
} }
}
}
fn check_ty(&mut self, cx: &LateContext<'_, '_>, ty: &'tcx Ty) { fn check_ty(&mut self, cx: &LateContext<'_, '_>, ty: &'tcx Ty) {
if let TyKind::Path(qpath) = &ty.node { if let TyKind::Path(qpath) = &ty.node {