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Merge pull request #1819 from Manishearth/fix-1814

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Check for `for` loop desugaring in highering
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Martin Carton 2017-06-08 22:36:21 +02:00 committed by GitHub
commit 3cbf126d59
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clippy_lints/src/utils/higher.rs
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@ -125,7 +125,7 @@ pub fn is_from_for_desugar(decl: &hir::Decl) -> bool {
/// `for pat in arg { body }` becomes `(pat, arg, body)`.
pub fn for_loop(expr: &hir::Expr) -> Option<(&hir::Pat, &hir::Expr, &hir::Expr)> {
if_let_chain! {[
let hir::ExprMatch(ref iterexpr, ref arms, _) = expr.node,
let hir::ExprMatch(ref iterexpr, ref arms, hir::MatchSource::ForLoopDesugar) = expr.node,
let hir::ExprCall(_, ref iterargs) = iterexpr.node,
iterargs.len() == 1 && arms.len() == 1 && arms[0].guard.is_none(),
let hir::ExprLoop(ref block, _, _) = arms[0].body.node,