SemverQuery(
id: "enum_tuple_variant_changed_kind",
human_readable_name: "An enum tuple variant changed kind",
description: "A public enum tuple variant that isn't #[non_exhaustive] changed kind",
required_update: Major,
lint_level: Deny,
// TODO: If the Rust reference gains a more detailed explanation of enum *variants*,
// switch the explanation to point there instead. The current link isn't great.
reference_link: Some("https://doc.rust-lang.org/reference/items/enumerations.html"),
query: r#"
{
CrateDiff {
baseline {
item {
... on Enum {
visibility_limit @filter(op: "=", value: ["$public"])
enum_name: name @output @tag
importable_path {
path @output @tag
public_api @filter(op: "=", value: ["$true"])
}
variant {
... on TupleVariant {
kind: __typename @output @tag
attrs @filter(op: "not_contains", value: ["$non_exhaustive"])
public_api_eligible @filter(op: "=", value: ["$true"])
variant_name: name @output @tag
}
}
}
}
}
current {
item {
... on Enum {
visibility_limit @filter(op: "=", value: ["$public"])
name @filter(op: "=", value: ["%enum_name"])
importable_path {
path @filter(op: "=", value: ["%path"])
public_api @filter(op: "=", value: ["$true"])
}
# Don't check for exhaustiveness and public API eligibility here.
# Variants that changed kind and gained `#[doc(hidden)]` should
# report for both lints, since there is no implied continuity
# between the old variant and the new one with the same name.
variant {
name @filter(op: "=", value: ["%variant_name"])
new_kind: __typename @filter(op: "!=", value: ["%kind"]) @output
span_: span @optional {
filename @output
begin_line @output
end_line @output
}
}
}
}
}
}
}"#,
arguments: {
"public": "public",
"true": true,
"non_exhaustive": "#[non_exhaustive]",
},
error_message: "A public enum's exhaustive tuple variant has changed to a different kind of enum variant, breaking possible instantiations and patterns.",
per_result_error_template: Some("variant {{enum_name}}::{{variant_name}} in {{span_filename}}:{{span_begin_line}}"),
)