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Refactor disallowed_methods:

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* Simplify `def_id` extraction.
* Use the span of the method name instead of the call.
This commit is contained in:
Jason Newcomb 2024-06-09 16:26:26 -04:00
parent 885f97e2ce
commit 60af2585f7
3 changed files with 45 additions and 49 deletions
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30
clippy_lints/src/disallowed_methods.rs
View File

@ -1,6 +1,6 @@
use clippy_config::types::DisallowedPath;
use clippy_utils::diagnostics::span_lint_and_then;
use clippy_utils::{fn_def_id, get_parent_expr, path_def_id};
use rustc_hir::def::{CtorKind, DefKind, Res};
use rustc_hir::def_id::DefIdMap;
use rustc_hir::{Expr, ExprKind};
use rustc_lint::{LateContext, LateLintPass};
@ -83,26 +83,26 @@ fn check_crate(&mut self, cx: &LateContext<'_>) {
}
fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
let uncalled_path = if let Some(parent) = get_parent_expr(cx, expr)
&& let ExprKind::Call(receiver, _) = parent.kind
&& receiver.hir_id == expr.hir_id
let (id, span) = match &expr.kind {
ExprKind::Path(path)
if let Res::Def(DefKind::Fn | DefKind::Ctor(_, CtorKind::Fn) | DefKind::AssocFn, id) =
cx.qpath_res(path, expr.hir_id) =>
{
None
} else {
path_def_id(cx, expr)
};
let Some(def_id) = uncalled_path.or_else(|| fn_def_id(cx, expr)) else {
return;
};
let conf = match self.disallowed.get(&def_id) {
Some(&index) => &self.conf_disallowed[index],
None => return,
(id, expr.span)
},
ExprKind::MethodCall(name, ..) if let Some(id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) => {
(id, name.ident.span)
},
_ => return,
};
if let Some(&index) = self.disallowed.get(&id) {
let conf = &self.conf_disallowed[index];
let msg = format!("use of a disallowed method `{}`", conf.path());
span_lint_and_then(cx, DISALLOWED_METHODS, expr.span, msg, |diag| {
span_lint_and_then(cx, DISALLOWED_METHODS, span, msg, |diag| {
if let Some(reason) = conf.reason() {
diag.note(reason);
}
});
}
}
}

16
tests/ui-internal/disallow_span_lint.stderr
View File

@ -1,22 +1,18 @@
error: use of a disallowed method `rustc_lint::context::LintContext::span_lint`
--> tests/ui-internal/disallow_span_lint.rs:14:5
--> tests/ui-internal/disallow_span_lint.rs:14:8
|
LL | / cx.span_lint(lint, span, |lint| {
LL | | lint.primary_message(msg);
LL | | });
| |______^
LL | cx.span_lint(lint, span, |lint| {
| ^^^^^^^^^
|
= note: this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint*` functions instead (from clippy.toml)
= note: `-D clippy::disallowed-methods` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::disallowed_methods)]`
error: use of a disallowed method `rustc_middle::ty::context::TyCtxt::node_span_lint`
--> tests/ui-internal/disallow_span_lint.rs:20:5
--> tests/ui-internal/disallow_span_lint.rs:20:9
|
LL | / tcx.node_span_lint(lint, hir_id, span, |lint| {
LL | | lint.primary_message(msg);
LL | | });
| |______^
LL | tcx.node_span_lint(lint, hir_id, span, |lint| {
| ^^^^^^^^^^^^^^
|
= note: this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint_hir*` functions instead (from clippy.toml)

36
tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.stderr
View File

@ -2,36 +2,36 @@ error: use of a disallowed method `regex::Regex::new`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:35:14
|
LL | let re = Regex::new(r"ab.*c").unwrap();
| ^^^^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^
|
= note: `-D clippy::disallowed-methods` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::disallowed_methods)]`
error: use of a disallowed method `regex::Regex::is_match`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:36:5
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:36:8
|
LL | re.is_match("abc");
| ^^^^^^^^^^^^^^^^^^
| ^^^^^^^^
|
= note: no matching allowed (from clippy.toml)
error: use of a disallowed method `std::iter::Iterator::sum`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:39:5
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:39:14
|
LL | a.iter().sum::<i32>();
| ^^^^^^^^^^^^^^^^^^^^^
| ^^^
error: use of a disallowed method `slice::sort_unstable`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:41:5
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:41:7
|
LL | a.sort_unstable();
| ^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^^^^
error: use of a disallowed method `f32::clamp`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:44:13
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:44:20
|
LL | let _ = 2.0f32.clamp(3.0f32, 4.0f32);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ^^^^^
error: use of a disallowed method `regex::Regex::new`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:47:61
@ -55,37 +55,37 @@ error: use of a disallowed method `futures::stream::select_all`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:54:31
|
LL | let same_name_as_module = select_all(vec![empty::<()>()]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^
error: use of a disallowed method `conf_disallowed_methods::local_fn`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:56:5
|
LL | local_fn();
| ^^^^^^^^^^
| ^^^^^^^^
error: use of a disallowed method `conf_disallowed_methods::local_mod::f`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:57:5
|
LL | local_mod::f();
| ^^^^^^^^^^^^^^
| ^^^^^^^^^^^^
error: use of a disallowed method `conf_disallowed_methods::Struct::method`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:59:5
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:59:7
|
LL | s.method();
| ^^^^^^^^^^
| ^^^^^^
error: use of a disallowed method `conf_disallowed_methods::Trait::provided_method`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:60:5
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:60:7
|
LL | s.provided_method();
| ^^^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^^^^^^
error: use of a disallowed method `conf_disallowed_methods::Trait::implemented_method`
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:61:5
--> tests/ui-toml/toml_disallowed_methods/conf_disallowed_methods.rs:61:7
|
LL | s.implemented_method();
| ^^^^^^^^^^^^^^^^^^^^^^
| ^^^^^^^^^^^^^^^^^^
error: aborting due to 14 previous errors