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https://github.com/rust-lang/rust-clippy
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changed the msrv to 1.70 to suggest is_some_and
if the msrv is not >= 1.70 then the `map_or` is suggested instead of `is_some_and` (even when `unwrap_or` returns false)
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9b7d8d1dc7
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c60222dc12
5 changed files with 49 additions and 6 deletions
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@ -3906,7 +3906,7 @@ impl Methods {
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manual_saturating_arithmetic::check(cx, expr, lhs, rhs, u_arg, &arith["checked_".len()..]);
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},
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Some(("map", m_recv, [m_arg], span, _)) => {
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option_map_unwrap_or::check(cx, expr, m_recv, m_arg, recv, u_arg, span);
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option_map_unwrap_or::check(cx, expr, m_recv, m_arg, recv, u_arg, span, &self.msrv);
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},
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Some(("then_some", t_recv, [t_arg], _, _)) => {
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obfuscated_if_else::check(cx, expr, t_recv, t_arg, u_arg);
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@ -1,4 +1,5 @@
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use clippy_utils::diagnostics::span_lint_and_then;
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use clippy_utils::msrvs::{self, Msrv};
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use clippy_utils::source::snippet_with_applicability;
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use clippy_utils::ty::is_copy;
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use clippy_utils::ty::is_type_diagnostic_item;
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@ -27,6 +28,7 @@ pub(super) fn check<'tcx>(
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unwrap_recv: &rustc_hir::Expr<'_>,
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unwrap_arg: &'tcx rustc_hir::Expr<'_>,
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map_span: Span,
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msrv: &Msrv,
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) {
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// lint if the caller of `map()` is an `Option`
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if is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(recv), sym::Option) {
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@ -75,10 +77,12 @@ pub(super) fn check<'tcx>(
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}
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let mut suggest_is_some_and = false;
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// argument to `unwrap_or` is false; should suggest using `is_some_and`
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if let ExprKind::Lit(unwrap_lit) = &unwrap_arg.kind {
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if let rustc_ast::LitKind::Bool(false) = unwrap_lit.node {
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suggest_is_some_and = true;
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// argument to `unwrap_or` is false & is_some_and is stabilised; should suggest using `is_some_and`
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if msrv.meets(msrvs::OPT_IS_SOME_AND) {
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if let ExprKind::Lit(unwrap_lit) = &unwrap_arg.kind {
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if let rustc_ast::LitKind::Bool(false) = unwrap_lit.node {
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suggest_is_some_and = true;
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}
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}
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}
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@ -19,6 +19,7 @@ macro_rules! msrv_aliases {
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// names may refer to stabilized feature flags or library items
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msrv_aliases! {
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1,70,0 { OPT_IS_SOME_AND }
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1,68,0 { PATH_MAIN_SEPARATOR_STR }
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1,65,0 { LET_ELSE, POINTER_CAST_CONSTNESS }
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1,62,0 { BOOL_THEN_SOME, DEFAULT_ENUM_ATTRIBUTE }
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@ -99,6 +99,20 @@ fn msrv_1_41() {
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let _ = res.map(|x| x + 1).unwrap_or_else(|_e| 0);
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}
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#[clippy::msrv = "1.69"]
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fn msrv_1_69() {
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let opt: Option<i32> = Some(1);
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let _ = opt.map(|x| x > 5).unwrap_or(false);
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}
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#[clippy::msrv = "1.70"]
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fn msrv_1_70() {
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let opt: Option<i32> = Some(1);
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let _ = opt.map(|x| x > 5).unwrap_or(false);
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}
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mod issue_10579 {
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// Different variations of the same issue.
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fn v1() {
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@ -164,5 +164,29 @@ error: called `map(<f>).unwrap_or_else(<g>)` on a `Result` value. This can be do
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LL | let _ = res.map(|x| x + 1).unwrap_or_else(|_e| 0);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `res.map_or_else(|_e| 0, |x| x + 1)`
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error: aborting due to 13 previous errors
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error: called `map(<f>).unwrap_or(<a>)` on an `Option` value. This can be done more directly by calling `map_or(<a>, <f>)` instead
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--> $DIR/map_unwrap_or.rs:106:13
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LL | let _ = opt.map(|x| x > 5).unwrap_or(false);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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help: use `map_or(<a>, <f>)` instead
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LL - let _ = opt.map(|x| x > 5).unwrap_or(false);
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LL + let _ = opt.map_or(false, |x| x > 5);
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error: called `map(<f>).unwrap_or(false)` on an `Option` value. This can be done more directly by calling `is_some_and(<f>)` instead
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--> $DIR/map_unwrap_or.rs:113:13
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LL | let _ = opt.map(|x| x > 5).unwrap_or(false);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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help: use `is_some_and(<f>)` instead
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LL - let _ = opt.map(|x| x > 5).unwrap_or(false);
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LL + let _ = opt.is_some_and(|x| x > 5);
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error: aborting due to 15 previous errors
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