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lint_groups_priority: ignore lints & groups at the same level

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This commit is contained in:
Alex Macleod 2024-05-20 17:57:40 +00:00
parent 0b1bf37722
commit 9e5523e8c4
4 changed files with 60 additions and 60 deletions
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60
clippy_lints/src/cargo/lint_groups_priority.rs
View File

@ -71,12 +71,6 @@ struct CargoToml {
workspace: Workspace,
}
#[derive(Default, Debug)]
struct LintsAndGroups {
lints: Vec<Spanned<String>>,
groups: Vec<(Spanned<String>, Spanned<LintConfig>)>,
}
fn toml_span(range: Range<usize>, file: &SourceFile) -> Span {
Span::new(
file.start_pos + BytePos::from_usize(range.start),
@ -86,27 +80,28 @@ fn toml_span(range: Range<usize>, file: &SourceFile) -> Span {
)
}
fn check_table(cx: &LateContext<'_>, table: LintTable, groups: &FxHashSet<&str>, file: &SourceFile) {
let mut by_priority = BTreeMap::<_, LintsAndGroups>::new();
fn check_table(cx: &LateContext<'_>, table: LintTable, known_groups: &FxHashSet<&str>, file: &SourceFile) {
let mut lints = Vec::new();
let mut groups = Vec::new();
for (name, config) in table {
let lints_and_groups = by_priority.entry(config.as_ref().priority()).or_default();
if groups.contains(name.get_ref().as_str()) {
lints_and_groups.groups.push((name, config));
if name.get_ref() == "warnings" {
continue;
}
if known_groups.contains(name.get_ref().as_str()) {
groups.push((name, config));
} else {
lints_and_groups.lints.push(name);
lints.push((name, config.into_inner()));
}
}
let low_priority = by_priority
.iter()
.find(|(_, lints_and_groups)| !lints_and_groups.lints.is_empty())
.map_or(-1, |(&lowest_lint_priority, _)| lowest_lint_priority - 1);
for (priority, LintsAndGroups { lints, groups }) in by_priority {
let Some(last_lint_alphabetically) = lints.last() else {
continue;
};
for (group, config) in groups {
for (group, group_config) in groups {
let priority = group_config.get_ref().priority();
let level = group_config.get_ref().level();
if let Some((conflict, _)) = lints
.iter()
.rfind(|(_, lint_config)| lint_config.priority() == priority && lint_config.level() != level)
{
span_lint_and_then(
cx,
LINT_GROUPS_PRIORITY,
@ -116,22 +111,23 @@ fn check_table(cx: &LateContext<'_>, table: LintTable, groups: &FxHashSet<&str>,
group.as_ref()
),
|diag| {
let config_span = toml_span(config.span(), file);
if config.as_ref().is_implicit() {
let config_span = toml_span(group_config.span(), file);
if group_config.as_ref().is_implicit() {
diag.span_label(config_span, "has an implicit priority of 0");
}
// add the label to next lint after this group that has the same priority
let lint = lints
.iter()
.filter(|lint| lint.span().start > group.span().start)
.min_by_key(|lint| lint.span().start)
.unwrap_or(last_lint_alphabetically);
diag.span_label(toml_span(lint.span(), file), "has the same priority as this lint");
diag.span_label(toml_span(conflict.span(), file), "has the same priority as this lint");
diag.note("the order of the lints in the table is ignored by Cargo");
let mut suggestion = String::new();
let low_priority = lints
.iter()
.map(|(_, config)| config.priority().saturating_sub(1))
.min()
.unwrap_or(-1);
Serialize::serialize(
&LintConfigTable {
level: config.as_ref().level().into(),
level: level.into(),
priority: Some(low_priority),
},
toml::ser::ValueSerializer::new(&mut suggestion),

49
tests/ui-cargo/lint_groups_priority/fail/Cargo.stderr
View File

@ -1,17 +1,18 @@
error: lint group `rust_2018_idioms` has the same priority (0) as a lint
--> Cargo.toml:7:1
|
7 | rust_2018_idioms = "warn"
| ^^^^^^^^^^^^^^^^ ------ has an implicit priority of 0
8 | bare_trait_objects = "allow"
| ------------------ has the same priority as this lint
|
= note: the order of the lints in the table is ignored by Cargo
= note: `#[deny(clippy::lint_groups_priority)]` on by default
--> Cargo.toml:7:1
|
7 | rust_2018_idioms = "warn"
| ^^^^^^^^^^^^^^^^ ------ has an implicit priority of 0
...
12 | unused_attributes = { level = "allow" }
| ----------------- has the same priority as this lint
|
= note: the order of the lints in the table is ignored by Cargo
= note: `#[deny(clippy::lint_groups_priority)]` on by default
help: to have lints override the group set `rust_2018_idioms` to a lower priority
|
7 | rust_2018_idioms = { level = "warn", priority = -1 }
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
7 | rust_2018_idioms = { level = "warn", priority = -1 }
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: lint group `unused` has the same priority (0) as a lint
--> Cargo.toml:10:1
@ -29,45 +30,45 @@ help: to have lints override the group set `unused` to a lower priority
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: lint group `pedantic` has the same priority (-1) as a lint
--> Cargo.toml:19:1
--> Cargo.toml:15:1
|
19 | pedantic = { level = "warn", priority = -1 }
15 | pedantic = { level = "warn", priority = -1 }
| ^^^^^^^^
20 | similar_names = { level = "allow", priority = -1 }
16 | similar_names = { level = "allow", priority = -1 }
| ------------- has the same priority as this lint
|
= note: the order of the lints in the table is ignored by Cargo
help: to have lints override the group set `pedantic` to a lower priority
|
19 | pedantic = { level = "warn", priority = -2 }
15 | pedantic = { level = "warn", priority = -2 }
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: lint group `rust_2018_idioms` has the same priority (0) as a lint
--> Cargo.toml:23:1
--> Cargo.toml:19:1
|
23 | rust_2018_idioms = "warn"
19 | rust_2018_idioms = "warn"
| ^^^^^^^^^^^^^^^^ ------ has an implicit priority of 0
24 | bare_trait_objects = "allow"
20 | bare_trait_objects = "allow"
| ------------------ has the same priority as this lint
|
= note: the order of the lints in the table is ignored by Cargo
help: to have lints override the group set `rust_2018_idioms` to a lower priority
|
23 | rust_2018_idioms = { level = "warn", priority = -1 }
19 | rust_2018_idioms = { level = "warn", priority = -1 }
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: lint group `pedantic` has the same priority (0) as a lint
--> Cargo.toml:27:1
--> Cargo.toml:23:1
|
27 | pedantic = "warn"
23 | pedantic = "warn"
| ^^^^^^^^ ------ has an implicit priority of 0
28 | similar_names = "allow"
24 | similar_names = "allow"
| ------------- has the same priority as this lint
|
= note: the order of the lints in the table is ignored by Cargo
help: to have lints override the group set `pedantic` to a lower priority
|
27 | pedantic = { level = "warn", priority = -1 }
23 | pedantic = { level = "warn", priority = -1 }
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: could not compile `fail` (lib) due to 5 previous errors

4
tests/ui-cargo/lint_groups_priority/fail/Cargo.toml
View File

@ -11,10 +11,6 @@ unused = { level = "deny" }
unused_braces = { level = "allow", priority = 1 }
unused_attributes = { level = "allow" }
# `warnings` is not a group so the order it is passed does not matter
warnings = "deny"
deprecated = "allow"
[lints.clippy]
pedantic = { level = "warn", priority = -1 }
similar_names = { level = "allow", priority = -1 }

7
tests/ui-cargo/lint_groups_priority/pass/Cargo.toml
View File

@ -3,6 +3,13 @@ name = "pass"
version = "0.1.0"
publish = false
[lints.rust]
# Warnings does not conflict with any group or lint
warnings = "deny"
# Groups & lints at the same level do not conflict
rust_2018_idioms = "warn"
unsafe_code = "warn"
[lints.clippy]
pedantic = { level = "warn", priority = -1 }
style = { level = "warn", priority = 1 }