bjoernager/rust
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Store version of deprecated attribute in structured form

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David Tolnay 2023-10-26 10:14:29 -07:00
parent 5c7cf83739
commit 2fe7d17bd9
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7 changed files with 85 additions and 105 deletions
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49
compiler/rustc_passes/src/stability.rs
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@ -3,8 +3,8 @@
use crate::errors;
use rustc_attr::{
self as attr, ConstStability, Stability, StabilityLevel, StableSince, Unstable, UnstableReason,
VERSION_PLACEHOLDER,
self as attr, ConstStability, DeprecatedSince, Stability, StabilityLevel, StableSince,
Unstable, UnstableReason, VERSION_PLACEHOLDER,
};
use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap};
use rustc_hir as hir;
@ -24,8 +24,6 @@ use rustc_span::symbol::{sym, Symbol};
use rustc_span::Span;
use rustc_target::spec::abi::Abi;
use std::cmp::Ordering;
use std::iter;
use std::mem::replace;
use std::num::NonZeroU32;
@ -198,7 +196,11 @@ impl<'a, 'tcx> Annotator<'a, 'tcx> {
}
}
if let Some((rustc_attr::Deprecation { is_since_rustc_version: true, .. }, span)) = &depr {
if let Some((
rustc_attr::Deprecation { since: Some(DeprecatedSince::RustcVersion(_)), .. },
span,
)) = &depr
{
if stab.is_none() {
self.tcx.sess.emit_err(errors::DeprecatedAttribute { span: *span });
}
@ -223,41 +225,20 @@ impl<'a, 'tcx> Annotator<'a, 'tcx> {
// Check if deprecated_since < stable_since. If it is,
// this is *almost surely* an accident.
if let (&Some(dep_since), &attr::Stable { since: stab_since, .. }) =
(&depr.as_ref().and_then(|(d, _)| d.since), &stab.level)
if let (
&Some(DeprecatedSince::RustcVersion(dep_since)),
&attr::Stable { since: stab_since, .. },
) = (&depr.as_ref().and_then(|(d, _)| d.since), &stab.level)
{
match stab_since {
StableSince::Current => {
self.tcx.sess.emit_err(errors::CannotStabilizeDeprecated { span, item_sp });
}
StableSince::Version(stab_since) => {
// Explicit version of iter::order::lt to handle parse errors properly
for (dep_v, stab_v) in iter::zip(
dep_since.as_str().split('.'),
[stab_since.major, stab_since.minor, stab_since.patch],
) {
match dep_v.parse::<u64>() {
Ok(dep_vp) => match dep_vp.cmp(&u64::from(stab_v)) {
Ordering::Less => {
self.tcx.sess.emit_err(errors::CannotStabilizeDeprecated {
span,
item_sp,
});
break;
}
Ordering::Equal => continue,
Ordering::Greater => break,
},
Err(_) => {
if dep_v != "TBD" {
self.tcx.sess.emit_err(errors::InvalidDeprecationVersion {
span,
item_sp,
});
}
break;
}
}
if dep_since < stab_since {
self.tcx
.sess
.emit_err(errors::CannotStabilizeDeprecated { span, item_sp });
}
}
StableSince::Err => {