rustc_hir/
lints.rs

1use rustc_data_structures::fingerprint::Fingerprint;
2use rustc_macros::HashStable_Generic;
3use rustc_span::Span;
4
5use crate::{AttrPath, HirId, Target};
6
7#[derive(Debug)]
8pub struct DelayedLints {
9    pub lints: Box<[DelayedLint]>,
10    // Only present when the crate hash is needed.
11    pub opt_hash: Option<Fingerprint>,
12}
13
14/// During ast lowering, no lints can be emitted.
15/// That is because lints attach to nodes either in the AST, or on the built HIR.
16/// When attached to AST nodes, they're emitted just before building HIR,
17/// and then there's a gap where no lints can be emitted until HIR is done.
18/// The variants in this enum represent lints that are temporarily stashed during
19/// AST lowering to be emitted once HIR is built.
20#[derive(Clone, Debug, HashStable_Generic)]
21pub enum DelayedLint {
22    AttributeParsing(AttributeLint<HirId>),
23}
24
25#[derive(Clone, Debug, HashStable_Generic)]
26pub struct AttributeLint<Id> {
27    pub id: Id,
28    pub span: Span,
29    pub kind: AttributeLintKind,
30}
31
32#[derive(Clone, Debug, HashStable_Generic)]
33pub enum AttributeLintKind {
34    UnusedDuplicate { this: Span, other: Span, warning: bool },
35    IllFormedAttributeInput { suggestions: Vec<String> },
36    EmptyAttribute { first_span: Span },
37    InvalidTarget { name: AttrPath, target: Target, applied: Vec<String>, only: &'static str },
38}
rustc_hir/lints.rs

rustc_hir/
lints.rs
