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Allow negative literals in redundant_guards

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This commit is contained in:
Alex Macleod 2024-02-14 13:31:02 +00:00
parent 2c3213f5c5
commit b32d7c0631
4 changed files with 62 additions and 18 deletions
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8
clippy_lints/src/matches/redundant_guards.rs
View file

@ -5,7 +5,7 @@ use clippy_utils::visitors::{for_each_expr, is_local_used};
use rustc_ast::{BorrowKind, LitKind}; use rustc_ast::{BorrowKind, LitKind};
use rustc_errors::Applicability; use rustc_errors::Applicability;
use rustc_hir::def::{DefKind, Res}; use rustc_hir::def::{DefKind, Res};
use rustc_hir::{Arm, BinOpKind, Expr, ExprKind, MatchSource, Node, Pat, PatKind}; use rustc_hir::{Arm, BinOpKind, Expr, ExprKind, MatchSource, Node, Pat, PatKind, UnOp};
use rustc_lint::LateContext; use rustc_lint::LateContext;
use rustc_span::symbol::Ident; use rustc_span::symbol::Ident;
use rustc_span::{Span, Symbol}; use rustc_span::{Span, Symbol};
@ -269,7 +269,11 @@ fn expr_can_be_pat(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
Res::Def(DefKind::Struct | DefKind::Enum | DefKind::Ctor(..), ..), Res::Def(DefKind::Struct | DefKind::Enum | DefKind::Ctor(..), ..),
) )
}, },
ExprKind::AddrOf(..) | ExprKind::Array(..) | ExprKind::Tup(..) | ExprKind::Struct(..) => true, ExprKind::AddrOf(..)
| ExprKind::Array(..)
| ExprKind::Tup(..)
| ExprKind::Struct(..)
| ExprKind::Unary(UnOp::Neg, _) => true,
ExprKind::Lit(lit) if !matches!(lit.node, LitKind::Float(..)) => true, ExprKind::Lit(lit) if !matches!(lit.node, LitKind::Float(..)) => true,
_ => false, _ => false,
} { } {

8
tests/ui/redundant_guards.fixed
View file

@ -117,6 +117,14 @@ fn h(v: Option<u32>) {
}; };
} }
fn negative_literal(i: i32) {
match i {
-1 => {},
1 => {},
_ => {},
}
}
// Do not lint // Do not lint
fn f(s: Option<std::ffi::OsString>) { fn f(s: Option<std::ffi::OsString>) {

8
tests/ui/redundant_guards.rs
View file

@ -117,6 +117,14 @@ fn h(v: Option<u32>) {
}; };
} }
fn negative_literal(i: i32) {
match i {
i if i == -1 => {},
i if i == 1 => {},
_ => {},
}
}
// Do not lint // Do not lint
fn f(s: Option<std::ffi::OsString>) { fn f(s: Option<std::ffi::OsString>) {

56
tests/ui/redundant_guards.stderr
View file

@ -108,7 +108,31 @@ LL + Some(0) => ..,
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:165:28 --> $DIR/redundant_guards.rs:122:14
|
LL | i if i == -1 => {},
| ^^^^^^^
|
help: try
|
LL - i if i == -1 => {},
LL + -1 => {},
|
error: redundant guard
--> $DIR/redundant_guards.rs:123:14
|
LL | i if i == 1 => {},
| ^^^^^^
|
help: try
|
LL - i if i == 1 => {},
LL + 1 => {},
|
error: redundant guard
--> $DIR/redundant_guards.rs:173:28
| |
LL | Some(ref x) if x == &1 => {}, LL | Some(ref x) if x == &1 => {},
| ^^^^^^^ | ^^^^^^^
@ -120,7 +144,7 @@ LL + Some(1) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:166:28 --> $DIR/redundant_guards.rs:174:28
| |
LL | Some(ref x) if &1 == x => {}, LL | Some(ref x) if &1 == x => {},
| ^^^^^^^ | ^^^^^^^
@ -132,7 +156,7 @@ LL + Some(1) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:167:28 --> $DIR/redundant_guards.rs:175:28
| |
LL | Some(ref x) if let &2 = x => {}, LL | Some(ref x) if let &2 = x => {},
| ^^^^^^^^^^ | ^^^^^^^^^^
@ -144,7 +168,7 @@ LL + Some(2) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:168:28 --> $DIR/redundant_guards.rs:176:28
| |
LL | Some(ref x) if matches!(x, &3) => {}, LL | Some(ref x) if matches!(x, &3) => {},
| ^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^
@ -156,7 +180,7 @@ LL + Some(3) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:188:32 --> $DIR/redundant_guards.rs:196:32
| |
LL | B { ref c, .. } if c == &1 => {}, LL | B { ref c, .. } if c == &1 => {},
| ^^^^^^^ | ^^^^^^^
@ -168,7 +192,7 @@ LL + B { c: 1, .. } => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:189:32 --> $DIR/redundant_guards.rs:197:32
| |
LL | B { ref c, .. } if &1 == c => {}, LL | B { ref c, .. } if &1 == c => {},
| ^^^^^^^ | ^^^^^^^
@ -180,7 +204,7 @@ LL + B { c: 1, .. } => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:190:32 --> $DIR/redundant_guards.rs:198:32
| |
LL | B { ref c, .. } if let &1 = c => {}, LL | B { ref c, .. } if let &1 = c => {},
| ^^^^^^^^^^ | ^^^^^^^^^^
@ -192,7 +216,7 @@ LL + B { c: 1, .. } => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:191:32 --> $DIR/redundant_guards.rs:199:32
| |
LL | B { ref c, .. } if matches!(c, &1) => {}, LL | B { ref c, .. } if matches!(c, &1) => {},
| ^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^
@ -204,7 +228,7 @@ LL + B { c: 1, .. } => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:201:26 --> $DIR/redundant_guards.rs:209:26
| |
LL | Some(Some(x)) if x.is_empty() => {}, LL | Some(Some(x)) if x.is_empty() => {},
| ^^^^^^^^^^^^ | ^^^^^^^^^^^^
@ -216,7 +240,7 @@ LL + Some(Some("")) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:212:26 --> $DIR/redundant_guards.rs:220:26
| |
LL | Some(Some(x)) if x.is_empty() => {}, LL | Some(Some(x)) if x.is_empty() => {},
| ^^^^^^^^^^^^ | ^^^^^^^^^^^^
@ -228,7 +252,7 @@ LL + Some(Some([])) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:217:26 --> $DIR/redundant_guards.rs:225:26
| |
LL | Some(Some(x)) if x.is_empty() => {}, LL | Some(Some(x)) if x.is_empty() => {},
| ^^^^^^^^^^^^ | ^^^^^^^^^^^^
@ -240,7 +264,7 @@ LL + Some(Some([])) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:228:26 --> $DIR/redundant_guards.rs:236:26
| |
LL | Some(Some(x)) if x.starts_with(&[]) => {}, LL | Some(Some(x)) if x.starts_with(&[]) => {},
| ^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^
@ -252,7 +276,7 @@ LL + Some(Some([..])) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:233:26 --> $DIR/redundant_guards.rs:241:26
| |
LL | Some(Some(x)) if x.starts_with(&[1]) => {}, LL | Some(Some(x)) if x.starts_with(&[1]) => {},
| ^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^
@ -264,7 +288,7 @@ LL + Some(Some([1, ..])) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:238:26 --> $DIR/redundant_guards.rs:246:26
| |
LL | Some(Some(x)) if x.starts_with(&[1, 2]) => {}, LL | Some(Some(x)) if x.starts_with(&[1, 2]) => {},
| ^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^
@ -276,7 +300,7 @@ LL + Some(Some([1, 2, ..])) => {},
| |
error: redundant guard error: redundant guard
--> $DIR/redundant_guards.rs:243:26 --> $DIR/redundant_guards.rs:251:26
| |
LL | Some(Some(x)) if x.ends_with(&[1, 2]) => {}, LL | Some(Some(x)) if x.ends_with(&[1, 2]) => {},
| ^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^
@ -287,5 +311,5 @@ LL - Some(Some(x)) if x.ends_with(&[1, 2]) => {},
LL + Some(Some([.., 1, 2])) => {}, LL + Some(Some([.., 1, 2])) => {},
| |
error: aborting due to 24 previous errors error: aborting due to 26 previous errors