mirror of
https://github.com/rust-lang/rust-clippy
synced 2025-01-02 08:19:11 +00:00
d647696c1f
So, some context for this, well, more a story. I'm not used to scripting, I've never really scripted anything, even if it's a valuable skill. I just never really needed it. Now, `@flip1995` correctly suggested using a script for this in `rust-clippy#7813`...
And I decided to write a script using nushell because why not? This was a mistake... I spend way more time on this than I would like to admit. It has definitely been more than 4 hours. It shouldn't take that long, but me being new to scripting and nushell just wasn't a good mixture... Anyway, here is the script that creates another script which adds the versions. Fun...
Just execute this on the `gh-pages` branch and the resulting `replacer.sh` in `clippy_lints` and it should all work.
```nu
mv v0.0.212 rust-1.00.0;
mv beta rust-1.57.0;
mv master rust-1.58.0;
let paths = (open ./rust-1.58.0/lints.json | select id id_span | flatten | select id path);
let versions = (
ls | where name =~ "rust-" | select name | format {name}/lints.json |
each { open $it | select id | insert version $it | str substring "5,11" version} |
group-by id | rotate counter-clockwise id version |
update version {get version | first 1} | flatten | select id version);
$paths | each { |row|
let version = ($versions | where id == ($row.id) | format {version})
let idu = ($row.id | str upcase)
$"sed -i '0,/($idu),/{s/pub ($idu),/#[clippy::version = "($version)"]\n pub ($idu),/}' ($row.path)"
} | str collect ";" | str find-replace --all '1.00.0' 'pre 1.29.0' | save "replacer.sh";
```
And this still has some problems, but at this point I just want to be done -.-
99 lines
4.1 KiB
Rust
99 lines
4.1 KiB
Rust
use clippy_utils::diagnostics::span_lint_and_sugg;
|
|
use clippy_utils::match_def_path;
|
|
use clippy_utils::source::snippet_with_applicability;
|
|
use if_chain::if_chain;
|
|
use rustc_errors::Applicability;
|
|
use rustc_hir as hir;
|
|
use rustc_lint::{LateContext, LateLintPass};
|
|
use rustc_middle::ty;
|
|
use rustc_session::{declare_lint_pass, declare_tool_lint};
|
|
|
|
declare_clippy_lint! {
|
|
/// ### What it does
|
|
/// Checks for `.to_digit(..).is_some()` on `char`s.
|
|
///
|
|
/// ### Why is this bad?
|
|
/// This is a convoluted way of checking if a `char` is a digit. It's
|
|
/// more straight forward to use the dedicated `is_digit` method.
|
|
///
|
|
/// ### Example
|
|
/// ```rust
|
|
/// # let c = 'c';
|
|
/// # let radix = 10;
|
|
/// let is_digit = c.to_digit(radix).is_some();
|
|
/// ```
|
|
/// can be written as:
|
|
/// ```
|
|
/// # let c = 'c';
|
|
/// # let radix = 10;
|
|
/// let is_digit = c.is_digit(radix);
|
|
/// ```
|
|
#[clippy::version = "1.41.0"]
|
|
pub TO_DIGIT_IS_SOME,
|
|
style,
|
|
"`char.is_digit()` is clearer"
|
|
}
|
|
|
|
declare_lint_pass!(ToDigitIsSome => [TO_DIGIT_IS_SOME]);
|
|
|
|
impl<'tcx> LateLintPass<'tcx> for ToDigitIsSome {
|
|
fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) {
|
|
if_chain! {
|
|
if let hir::ExprKind::MethodCall(is_some_path, _, is_some_args, _) = &expr.kind;
|
|
if is_some_path.ident.name.as_str() == "is_some";
|
|
if let [to_digit_expr] = &**is_some_args;
|
|
then {
|
|
let match_result = match &to_digit_expr.kind {
|
|
hir::ExprKind::MethodCall(to_digits_path, _, to_digit_args, _) => {
|
|
if_chain! {
|
|
if let [char_arg, radix_arg] = &**to_digit_args;
|
|
if to_digits_path.ident.name.as_str() == "to_digit";
|
|
let char_arg_ty = cx.typeck_results().expr_ty_adjusted(char_arg);
|
|
if *char_arg_ty.kind() == ty::Char;
|
|
then {
|
|
Some((true, char_arg, radix_arg))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
hir::ExprKind::Call(to_digits_call, to_digit_args) => {
|
|
if_chain! {
|
|
if let [char_arg, radix_arg] = &**to_digit_args;
|
|
if let hir::ExprKind::Path(to_digits_path) = &to_digits_call.kind;
|
|
if let to_digits_call_res = cx.qpath_res(to_digits_path, to_digits_call.hir_id);
|
|
if let Some(to_digits_def_id) = to_digits_call_res.opt_def_id();
|
|
if match_def_path(cx, to_digits_def_id, &["core", "char", "methods", "<impl char>", "to_digit"]);
|
|
then {
|
|
Some((false, char_arg, radix_arg))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
_ => None
|
|
};
|
|
|
|
if let Some((is_method_call, char_arg, radix_arg)) = match_result {
|
|
let mut applicability = Applicability::MachineApplicable;
|
|
let char_arg_snip = snippet_with_applicability(cx, char_arg.span, "_", &mut applicability);
|
|
let radix_snip = snippet_with_applicability(cx, radix_arg.span, "_", &mut applicability);
|
|
|
|
span_lint_and_sugg(
|
|
cx,
|
|
TO_DIGIT_IS_SOME,
|
|
expr.span,
|
|
"use of `.to_digit(..).is_some()`",
|
|
"try this",
|
|
if is_method_call {
|
|
format!("{}.is_digit({})", char_arg_snip, radix_snip)
|
|
} else {
|
|
format!("char::is_digit({}, {})", char_arg_snip, radix_snip)
|
|
},
|
|
applicability,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|