diff options
| -rw-r--r-- | CHANGELOG.md | 1 | ||||
| -rw-r--r-- | clippy_lints/src/attrs.rs | 125 | ||||
| -rw-r--r-- | clippy_lints/src/declared_lints.rs | 1 |
3 files changed, 99 insertions, 28 deletions
diff --git a/CHANGELOG.md b/CHANGELOG.md index 6080fd3663b..053f7de5446 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5071,6 +5071,7 @@ Released 2018-09-13 [`default_trait_access`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_trait_access [`default_union_representation`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_union_representation [`deprecated_cfg_attr`]: https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_cfg_attr +[`deprecated_clippy_cfg_attr`]: https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_clippy_cfg_attr [`deprecated_semver`]: https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_semver [`deref_addrof`]: https://rust-lang.github.io/rust-clippy/master/index.html#deref_addrof [`deref_by_slicing`]: https://rust-lang.github.io/rust-clippy/master/index.html#deref_by_slicing diff --git a/clippy_lints/src/attrs.rs b/clippy_lints/src/attrs.rs index da38422874b..755f4ad3c89 100644 --- a/clippy_lints/src/attrs.rs +++ b/clippy_lints/src/attrs.rs @@ -433,6 +433,32 @@ declare_clippy_lint! { "prevent from misusing the wrong attr name" } +declare_clippy_lint! { + /// ### What it does + /// Checks for `#[cfg_attr(feature = "cargo-clippy", ...)]` and for + /// `#[cfg(feature = "cargo-clippy")]` and suggests to replace it with + /// `#[cfg_attr(clippy, ...)]` or `#[cfg(clippy)]`. + /// + /// ### Why is this bad? + /// This feature has been deprecated for years and shouldn't be used anymore. + /// + /// ### Example + /// ```no_run + /// #[cfg(feature = "cargo-clippy")] + /// struct Bar; + /// ``` + /// + /// Use instead: + /// ```no_run + /// #[cfg(clippy)] + /// struct Bar; + /// ``` + #[clippy::version = "1.78.0"] + pub DEPRECATED_CLIPPY_CFG_ATTR, + suspicious, + "usage of `cfg(feature = \"cargo-clippy\")` instead of `cfg(clippy)`" +} + declare_lint_pass!(Attributes => [ ALLOW_ATTRIBUTES_WITHOUT_REASON, INLINE_ALWAYS, @@ -794,6 +820,7 @@ impl_lint_pass!(EarlyAttributes => [ EMPTY_LINE_AFTER_DOC_COMMENTS, NON_MINIMAL_CFG, MAYBE_MISUSED_CFG, + DEPRECATED_CLIPPY_CFG_ATTR, ]); impl EarlyLintPass for EarlyAttributes { @@ -803,6 +830,7 @@ impl EarlyLintPass for EarlyAttributes { fn check_attribute(&mut self, cx: &EarlyContext<'_>, attr: &Attribute) { check_deprecated_cfg_attr(cx, attr, &self.msrv); + check_deprecated_cfg(cx, attr); check_mismatched_target_os(cx, attr); check_minimal_cfg_condition(cx, attr); check_misused_cfg(cx, attr); @@ -857,39 +885,80 @@ fn check_empty_line_after_outer_attr(cx: &EarlyContext<'_>, item: &rustc_ast::It } } +fn check_cargo_clippy_attr(cx: &EarlyContext<'_>, item: &rustc_ast::MetaItem) { + if item.has_name(sym::feature) && item.value_str().is_some_and(|v| v.as_str() == "cargo-clippy") { + span_lint_and_sugg( + cx, + DEPRECATED_CLIPPY_CFG_ATTR, + item.span, + "`feature = \"cargo-clippy\"` was replaced by `clippy`", + "replace with", + "clippy".to_string(), + Applicability::MachineApplicable, + ); + } +} + +fn check_deprecated_cfg_recursively(cx: &EarlyContext<'_>, attr: &rustc_ast::MetaItem) { + if let Some(ident) = attr.ident() { + if ["any", "all", "not"].contains(&ident.name.as_str()) { + let Some(list) = attr.meta_item_list() else { return }; + for item in list.iter().filter_map(|item| item.meta_item()) { + check_deprecated_cfg_recursively(cx, item); + } + } else { + check_cargo_clippy_attr(cx, attr); + } + } +} + +fn check_deprecated_cfg(cx: &EarlyContext<'_>, attr: &Attribute) { + if attr.has_name(sym::cfg) + && let Some(list) = attr.meta_item_list() + { + for item in list.iter().filter_map(|item| item.meta_item()) { + check_deprecated_cfg_recursively(cx, item); + } + } +} + fn check_deprecated_cfg_attr(cx: &EarlyContext<'_>, attr: &Attribute, msrv: &Msrv) { - if msrv.meets(msrvs::TOOL_ATTRIBUTES) - // check cfg_attr - && attr.has_name(sym::cfg_attr) + // check cfg_attr + if attr.has_name(sym::cfg_attr) && let Some(items) = attr.meta_item_list() && items.len() == 2 - // check for `rustfmt` && let Some(feature_item) = items[0].meta_item() - && feature_item.has_name(sym::rustfmt) - // check for `rustfmt_skip` and `rustfmt::skip` - && let Some(skip_item) = &items[1].meta_item() - && (skip_item.has_name(sym!(rustfmt_skip)) - || skip_item - .path - .segments - .last() - .expect("empty path in attribute") - .ident - .name - == sym::skip) - // Only lint outer attributes, because custom inner attributes are unstable - // Tracking issue: https://github.com/rust-lang/rust/issues/54726 - && attr.style == AttrStyle::Outer { - span_lint_and_sugg( - cx, - DEPRECATED_CFG_ATTR, - attr.span, - "`cfg_attr` is deprecated for rustfmt and got replaced by tool attributes", - "use", - "#[rustfmt::skip]".to_string(), - Applicability::MachineApplicable, - ); + // check for `rustfmt` + if feature_item.has_name(sym::rustfmt) + && msrv.meets(msrvs::TOOL_ATTRIBUTES) + // check for `rustfmt_skip` and `rustfmt::skip` + && let Some(skip_item) = &items[1].meta_item() + && (skip_item.has_name(sym!(rustfmt_skip)) + || skip_item + .path + .segments + .last() + .expect("empty path in attribute") + .ident + .name + == sym::skip) + // Only lint outer attributes, because custom inner attributes are unstable + // Tracking issue: https://github.com/rust-lang/rust/issues/54726 + && attr.style == AttrStyle::Outer + { + span_lint_and_sugg( + cx, + DEPRECATED_CFG_ATTR, + attr.span, + "`cfg_attr` is deprecated for rustfmt and got replaced by tool attributes", + "use", + "#[rustfmt::skip]".to_string(), + Applicability::MachineApplicable, + ); + } else { + check_deprecated_cfg_recursively(cx, feature_item); + } } } diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index b96a7af9070..c4d26e65b1a 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -51,6 +51,7 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[ crate::attrs::ALLOW_ATTRIBUTES_WITHOUT_REASON_INFO, crate::attrs::BLANKET_CLIPPY_RESTRICTION_LINTS_INFO, crate::attrs::DEPRECATED_CFG_ATTR_INFO, + crate::attrs::DEPRECATED_CLIPPY_CFG_ATTR_INFO, crate::attrs::DEPRECATED_SEMVER_INFO, crate::attrs::EMPTY_LINE_AFTER_DOC_COMMENTS_INFO, crate::attrs::EMPTY_LINE_AFTER_OUTER_ATTR_INFO, |