bjoernager/rust
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Reserve guarded string literals (RFC 3593)

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This commit is contained in:
Peter Jaszkowiak 2024-04-14 17:37:45 -06:00
parent 6f4ae0f345
commit 321a5db7d4
23 changed files with 1514 additions and 9 deletions
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3
compiler/rustc_lint/messages.ftl
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@ -740,6 +740,9 @@ lint_reserved_prefix = prefix `{$prefix}` is unknown
.label = unknown prefix
.suggestion = insert whitespace here to avoid this being parsed as a prefix in Rust 2021
lint_reserved_string = will be parsed as a guarded string in Rust 2024
.suggestion = insert whitespace here to avoid this being parsed as a guarded string in Rust 2024
lint_shadowed_into_iter =
this method call resolves to `<&{$target} as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<{$target} as IntoIterator>::into_iter` in Rust {$edition}
.use_iter_suggestion = use `.iter()` instead of `.into_iter()` to avoid ambiguity

3
compiler/rustc_lint/src/context/diagnostics.rs
View file

@ -176,6 +176,9 @@ pub(super) fn decorate_lint(sess: &Session, diagnostic: BuiltinLintDiag, diag: &
lints::RawPrefix { label: label_span, suggestion: label_span.shrink_to_hi() }
.decorate_lint(diag);
}
BuiltinLintDiag::ReservedString(suggestion) => {
lints::ReservedString { suggestion }.decorate_lint(diag);
}
BuiltinLintDiag::UnusedBuiltinAttribute { attr_name, macro_name, invoc_span } => {
lints::UnusedBuiltinAttribute { invoc_span, attr_name, macro_name }.decorate_lint(diag);
}

7
compiler/rustc_lint/src/lints.rs
View file

@ -3053,3 +3053,10 @@ pub(crate) enum MutRefSugg {
#[derive(LintDiagnostic)]
#[diag(lint_unqualified_local_imports)]
pub(crate) struct UnqualifiedLocalImportsDiag {}
#[derive(LintDiagnostic)]
#[diag(lint_reserved_string)]
pub(crate) struct ReservedString {
#[suggestion(code = " ", applicability = "machine-applicable")]
pub suggestion: Span,
}