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Rollup merge of #97370 - compiler-errors:else-no-if-2, r=Dylan-DPC

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Minor improvement on else-no-if diagnostic

Don't suggest wrapping in block since it's highly likely to be a missing `if` after `else`. Also rework message a bit (open to further suggestions).

cc: https://github.com/rust-lang/rust/pull/97298#discussion_r880933431

r? `@estebank`
This commit is contained in:
Dylan DPC 2022-05-25 10:48:30 +02:00 committed by GitHub
commit fe727e4dfc
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2 changed files with 3 additions and 18 deletions
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9
compiler/rustc_parse/src/parser/expr.rs
View File

@ -2291,16 +2291,9 @@ impl<'a> Parser<'a> {
.span_label(else_span, "expected an `if` or a block after this `else`")
.span_suggestion(
cond.span.shrink_to_lo(),
"add an `if` if this is the condition to an chained `if` statement after the `else`",
"add an `if` if this is the condition of a chained `else if` statement",
"if ".to_string(),
Applicability::MaybeIncorrect,
).multipart_suggestion(
"... otherwise, place this expression inside of a block if it is not an `if` condition",
vec![
(cond.span.shrink_to_lo(), "{ ".to_string()),
(cond.span.shrink_to_hi(), " }".to_string()),
],
Applicability::MaybeIncorrect,
)
.emit();
self.parse_if_after_cond(AttrVec::new(), cond.span.shrink_to_lo(), cond)?

12
src/test/ui/parser/else-no-if.stderr
View File

@ -6,14 +6,10 @@ LL | } else false {
| |
| expected an `if` or a block after this `else`
|
help: add an `if` if this is the condition to an chained `if` statement after the `else`
help: add an `if` if this is the condition of a chained `else if` statement
|
LL | } else if false {
| ++
help: ... otherwise, place this expression inside of a block if it is not an `if` condition
|
LL | } else { false } {
| + +
error: expected `{`, found `falsy`
--> $DIR/else-no-if.rs:10:12
@ -23,14 +19,10 @@ LL | } else falsy() {
| |
| expected an `if` or a block after this `else`
|
help: add an `if` if this is the condition to an chained `if` statement after the `else`
help: add an `if` if this is the condition of a chained `else if` statement
|
LL | } else if falsy() {
| ++
help: ... otherwise, place this expression inside of a block if it is not an `if` condition
|
LL | } else { falsy() } {
| + +
error: expected `{`, found `falsy`
--> $DIR/else-no-if.rs:17:12