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use rustc_data_structures::fingerprint::Fingerprint;
use rustc_macros::HashStable_Generic;
use rustc_span::Span;
use crate::{AttrPath, HirId, Target};
#[derive(Debug)]
pub struct DelayedLints {
pub lints: Box<[DelayedLint]>,
// Only present when the crate hash is needed.
pub opt_hash: Option<Fingerprint>,
}
/// During ast lowering, no lints can be emitted.
/// That is because lints attach to nodes either in the AST, or on the built HIR.
/// When attached to AST nodes, they're emitted just before building HIR,
/// and then there's a gap where no lints can be emitted until HIR is done.
/// The variants in this enum represent lints that are temporarily stashed during
/// AST lowering to be emitted once HIR is built.
#[derive(Clone, Debug, HashStable_Generic)]
pub enum DelayedLint {
AttributeParsing(AttributeLint<HirId>),
}
#[derive(Clone, Debug, HashStable_Generic)]
pub struct AttributeLint<Id> {
pub id: Id,
pub span: Span,
pub kind: AttributeLintKind,
}
#[derive(Clone, Debug, HashStable_Generic)]
pub enum AttributeLintKind {
/// Copy of `IllFormedAttributeInput`
/// specifically for the `invalid_macro_export_arguments` lint until that is removed,
/// see <https://github.com/rust-lang/rust/pull/143857#issuecomment-3079175663>
InvalidMacroExportArguments {
suggestions: Vec<String>,
},
UnusedDuplicate {
this: Span,
other: Span,
warning: bool,
},
IllFormedAttributeInput {
suggestions: Vec<String>,
},
EmptyAttribute {
first_span: Span,
attr_path: AttrPath,
valid_without_list: bool,
},
InvalidTarget {
name: AttrPath,
target: Target,
applied: Vec<String>,
only: &'static str,
},
InvalidStyle {
name: AttrPath,
is_used_as_inner: bool,
target: Target,
target_span: Span,
},
}
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