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double-parens: make lint adhere to lint message convention and do minor refactoring

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This commit is contained in:
Matthias Krüger 2020-07-23 19:56:01 +02:00
parent ba7a01a6a8
commit 590b91d8d4
2 changed files with 11 additions and 24 deletions
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23
clippy_lints/src/double_parens.rs
View file

@ -45,15 +45,12 @@ impl EarlyLintPass for DoubleParens {
return;
}
let msg: &str = "consider removing unnecessary double parentheses";
match expr.kind {
ExprKind::Paren(ref in_paren) => match in_paren.kind {
ExprKind::Paren(_) | ExprKind::Tup(_) => {
span_lint(
cx,
DOUBLE_PARENS,
expr.span,
"Consider removing unnecessary double parentheses",
);
span_lint(cx, DOUBLE_PARENS, expr.span, &msg);
},
_ => {},
},
@ -61,12 +58,7 @@ impl EarlyLintPass for DoubleParens {
if params.len() == 1 {
let param = &params[0];
if let ExprKind::Paren(_) = param.kind {
span_lint(
cx,
DOUBLE_PARENS,
param.span,
"Consider removing unnecessary double parentheses",
);
span_lint(cx, DOUBLE_PARENS, param.span, &msg);
}
}
},
@ -74,12 +66,7 @@ impl EarlyLintPass for DoubleParens {
if params.len() == 2 {
let param = &params[1];
if let ExprKind::Paren(_) = param.kind {
span_lint(
cx,
DOUBLE_PARENS,
param.span,
"Consider removing unnecessary double parentheses",
);
span_lint(cx, DOUBLE_PARENS, param.span, &msg);
}
}
},

12
tests/ui/double_parens.stderr
View file

@ -1,4 +1,4 @@
error: Consider removing unnecessary double parentheses
error: consider removing unnecessary double parentheses
--> $DIR/double_parens.rs:15:5
|
LL | ((0))
@ -6,31 +6,31 @@ LL | ((0))
|
= note: `-D clippy::double-parens` implied by `-D warnings`
error: Consider removing unnecessary double parentheses
error: consider removing unnecessary double parentheses
--> $DIR/double_parens.rs:19:14
|
LL | dummy_fn((0));
| ^^^
error: Consider removing unnecessary double parentheses
error: consider removing unnecessary double parentheses
--> $DIR/double_parens.rs:23:20
|
LL | x.dummy_method((0));
| ^^^
error: Consider removing unnecessary double parentheses
error: consider removing unnecessary double parentheses
--> $DIR/double_parens.rs:27:5
|
LL | ((1, 2))
| ^^^^^^^^
error: Consider removing unnecessary double parentheses
error: consider removing unnecessary double parentheses
--> $DIR/double_parens.rs:31:5
|
LL | (())
| ^^^^
error: Consider removing unnecessary double parentheses
error: consider removing unnecessary double parentheses
--> $DIR/double_parens.rs:53:16
|
LL | assert_eq!(((1, 2)), (1, 2), "Error");