rust-clippy/clippy_lints/src/deprecated_lints.rs
Joshua Nelson 012f9d47b2 Use register_renamed instead of register_removed for uplifted lints
This still applies the lint, and also adds a structured suggestion to
rename it.
2021-04-09 10:56:11 -04:00

127 lines
5.1 KiB
Rust

macro_rules! declare_deprecated_lint {
(pub $name: ident, $_reason: expr) => {
declare_lint!(pub $name, Allow, "deprecated lint")
}
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This used to check for `assert!(a == b)` and recommend
/// replacement with `assert_eq!(a, b)`, but this is no longer needed after RFC 2011.
pub SHOULD_ASSERT_EQ,
"`assert!()` will be more flexible with RFC 2011"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This used to check for `Vec::extend`, which was slower than
/// `Vec::extend_from_slice`. Thanks to specialization, this is no longer true.
pub EXTEND_FROM_SLICE,
"`.extend_from_slice(_)` is a faster way to extend a Vec by a slice"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** `Range::step_by(0)` used to be linted since it's
/// an infinite iterator, which is better expressed by `iter::repeat`,
/// but the method has been removed for `Iterator::step_by` which panics
/// if given a zero
pub RANGE_STEP_BY_ZERO,
"`iterator.step_by(0)` panics nowadays"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This used to check for `Vec::as_slice`, which was unstable with good
/// stable alternatives. `Vec::as_slice` has now been stabilized.
pub UNSTABLE_AS_SLICE,
"`Vec::as_slice` has been stabilized in 1.7"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This used to check for `Vec::as_mut_slice`, which was unstable with good
/// stable alternatives. `Vec::as_mut_slice` has now been stabilized.
pub UNSTABLE_AS_MUT_SLICE,
"`Vec::as_mut_slice` has been stabilized in 1.7"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This lint should never have applied to non-pointer types, as transmuting
/// between non-pointer types of differing alignment is well-defined behavior (it's semantically
/// equivalent to a memcpy). This lint has thus been refactored into two separate lints:
/// cast_ptr_alignment and transmute_ptr_to_ptr.
pub MISALIGNED_TRANSMUTE,
"this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This lint is too subjective, not having a good reason for being in clippy.
/// Additionally, compound assignment operators may be overloaded separately from their non-assigning
/// counterparts, so this lint may suggest a change in behavior or the code may not compile.
pub ASSIGN_OPS,
"using compound assignment operators (e.g., `+=`) is harmless"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** The original rule will only lint for `if let`. After
/// making it support to lint `match`, naming as `if let` is not suitable for it.
/// So, this lint is deprecated.
pub IF_LET_REDUNDANT_PATTERN_MATCHING,
"this lint has been changed to redundant_pattern_matching"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This lint used to suggest replacing `let mut vec =
/// Vec::with_capacity(n); vec.set_len(n);` with `let vec = vec![0; n];`. The
/// replacement has very different performance characteristics so the lint is
/// deprecated.
pub UNSAFE_VECTOR_INITIALIZATION,
"the replacement suggested by this lint had substantially different behavior"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This lint has been superseded by #[must_use] in rustc.
pub UNUSED_COLLECT,
"`collect` has been marked as #[must_use] in rustc and that covers all cases of this lint"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** Associated-constants are now preferred.
pub REPLACE_CONSTS,
"associated-constants `MIN`/`MAX` of integers are preferred to `{min,max}_value()` and module constants"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** The regex! macro does not exist anymore.
pub REGEX_MACRO,
"the regex! macro has been removed from the regex crate in 2018"
}
declare_deprecated_lint! {
/// **What it does:** Nothing. This lint has been deprecated.
///
/// **Deprecation reason:** This lint has been replaced by `manual_find_map`, a
/// more specific lint.
pub FIND_MAP,
"this lint has been replaced by `manual_find_map`, a more specific lint"
}