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[Clippy] Swap repeat_vec_with_capacity to use diagnostic item instead of path

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This commit is contained in:
GnomedDev 2024-09-18 21:53:28 +01:00
parent 545967955a
commit 984bd6fed6
3 changed files with 6 additions and 7 deletions
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6
clippy_lints/src/repeat_vec_with_capacity.rs
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@ -3,7 +3,7 @@
use clippy_utils::higher::VecArgs;
use clippy_utils::macros::matching_root_macro_call;
use clippy_utils::source::snippet;
use clippy_utils::{expr_or_init, fn_def_id, match_def_path, paths};
use clippy_utils::{expr_or_init, fn_def_id};
use rustc_errors::Applicability;
use rustc_hir::{Expr, ExprKind};
use rustc_lint::{LateContext, LateLintPass};
@ -67,7 +67,7 @@ fn emit_lint(cx: &LateContext<'_>, span: Span, kind: &str, note: &'static str, s
fn check_vec_macro(cx: &LateContext<'_>, expr: &Expr<'_>) {
if matching_root_macro_call(cx, expr.span, sym::vec_macro).is_some()
&& let Some(VecArgs::Repeat(repeat_expr, len_expr)) = VecArgs::hir(cx, expr)
&& fn_def_id(cx, repeat_expr).is_some_and(|did| match_def_path(cx, did, &paths::VEC_WITH_CAPACITY))
&& fn_def_id(cx, repeat_expr).is_some_and(|did| cx.tcx.is_diagnostic_item(sym::vec_with_capacity, did))
&& !len_expr.span.from_expansion()
&& let Some(Constant::Int(2..)) = ConstEvalCtxt::new(cx).eval(expr_or_init(cx, len_expr))
{
@ -91,7 +91,7 @@ fn check_repeat_fn(cx: &LateContext<'_>, expr: &Expr<'_>) {
if !expr.span.from_expansion()
&& fn_def_id(cx, expr).is_some_and(|did| cx.tcx.is_diagnostic_item(sym::iter_repeat, did))
&& let ExprKind::Call(_, [repeat_expr]) = expr.kind
&& fn_def_id(cx, repeat_expr).is_some_and(|did| match_def_path(cx, did, &paths::VEC_WITH_CAPACITY))
&& fn_def_id(cx, repeat_expr).is_some_and(|did| cx.tcx.is_diagnostic_item(sym::vec_with_capacity, did))
&& !repeat_expr.span.from_expansion()
{
emit_lint(

6
clippy_lints/src/slow_vector_initialization.rs
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@ -2,8 +2,8 @@
use clippy_utils::macros::matching_root_macro_call;
use clippy_utils::sugg::Sugg;
use clippy_utils::{
get_enclosing_block, is_expr_path_def_path, is_integer_literal, is_path_diagnostic_item, path_to_local,
path_to_local_id, paths, SpanlessEq,
get_enclosing_block, is_integer_literal, is_path_diagnostic_item, path_to_local,
path_to_local_id, SpanlessEq,
};
use rustc_errors::Applicability;
use rustc_hir::intravisit::{walk_block, walk_expr, walk_stmt, Visitor};
@ -150,7 +150,7 @@ fn as_vec_initializer<'tcx>(cx: &LateContext<'_>, expr: &'tcx Expr<'tcx>) -> Opt
}
if let ExprKind::Call(func, [len_expr]) = expr.kind
&& is_expr_path_def_path(cx, func, &paths::VEC_WITH_CAPACITY)
&& is_path_diagnostic_item(cx, func, sym::vec_with_capacity)
{
Some(InitializedSize::Initialized(len_expr))
} else if matches!(expr.kind, ExprKind::Call(func, _) if is_path_diagnostic_item(cx, func, sym::vec_new)) {

1
clippy_utils/src/paths.rs
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@ -72,7 +72,6 @@
pub const TOKIO_IO_OPEN_OPTIONS: [&str; 4] = ["tokio", "fs", "open_options", "OpenOptions"];
#[expect(clippy::invalid_paths)] // internal lints do not know about all external crates
pub const TOKIO_IO_OPEN_OPTIONS_NEW: [&str; 5] = ["tokio", "fs", "open_options", "OpenOptions", "new"];
pub const VEC_WITH_CAPACITY: [&str; 4] = ["alloc", "vec", "Vec", "with_capacity"];
pub const INSTANT_NOW: [&str; 4] = ["std", "time", "Instant", "now"];
pub const VEC_IS_EMPTY: [&str; 4] = ["alloc", "vec", "Vec", "is_empty"];
pub const VEC_POP: [&str; 4] = ["alloc", "vec", "Vec", "pop"];