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Properly account for editions in names

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This PR touches a lot of parts. But the main changes are changing
`hir_expand::Name` to be raw edition-dependently and only when necessary
(unrelated to how the user originally wrote the identifier),
and changing `is_keyword()` and `is_raw_identifier()` to be edition-aware
(this was done in #17896, but the FIXMEs were fixed here).

It is possible that I missed some cases, but most IDE parts should properly
escape (or not escape) identifiers now.

The rules of thumb are:

 - If we show the identifier to the user, its rawness should be determined
   by the edition of the edited crate. This is nice for IDE features,
   but really important for changes we insert to the source code.
 - For tests, I chose `Edition::CURRENT` (so we only have to (maybe) update
   tests when an edition becomes stable, to avoid churn).
 - For debugging tools (helper methods and logs), I used `Edition::LATEST`.
This commit is contained in:
Chayim Refael Friedman 2024-08-16 02:36:24 +03:00
parent 91aa3f46b3
commit 9d3368f2c2
179 changed files with 2485 additions and 1250 deletions
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30
crates/hir-ty/src/diagnostics/expr.rs
View file

@ -4,6 +4,7 @@
use std::fmt;
use base_db::CrateId;
use chalk_solve::rust_ir::AdtKind;
use either::Either;
use hir_def::{
@ -15,6 +16,7 @@ use intern::sym;
use itertools::Itertools;
use rustc_hash::FxHashSet;
use rustc_pattern_analysis::constructor::Constructor;
use span::Edition;
use syntax::{
ast::{self, UnaryOp},
AstNode,
@ -258,7 +260,13 @@ impl ExprValidator {
if !witnesses.is_empty() {
self.diagnostics.push(BodyValidationDiagnostic::MissingMatchArms {
match_expr,
uncovered_patterns: missing_match_arms(&cx, scrut_ty, witnesses, m_arms.is_empty()),
uncovered_patterns: missing_match_arms(
&cx,
scrut_ty,
witnesses,
m_arms.is_empty(),
self.owner.krate(db.upcast()),
),
});
}
}
@ -345,7 +353,13 @@ impl ExprValidator {
if !witnesses.is_empty() {
self.diagnostics.push(BodyValidationDiagnostic::NonExhaustiveLet {
pat,
uncovered_patterns: missing_match_arms(&cx, ty, witnesses, false),
uncovered_patterns: missing_match_arms(
&cx,
ty,
witnesses,
false,
self.owner.krate(db.upcast()),
),
});
}
}
@ -616,24 +630,26 @@ fn missing_match_arms<'p>(
scrut_ty: &Ty,
witnesses: Vec<WitnessPat<'p>>,
arms_is_empty: bool,
krate: CrateId,
) -> String {
struct DisplayWitness<'a, 'p>(&'a WitnessPat<'p>, &'a MatchCheckCtx<'p>);
struct DisplayWitness<'a, 'p>(&'a WitnessPat<'p>, &'a MatchCheckCtx<'p>, Edition);
impl fmt::Display for DisplayWitness<'_, '_> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let DisplayWitness(witness, cx) = *self;
let DisplayWitness(witness, cx, edition) = *self;
let pat = cx.hoist_witness_pat(witness);
write!(f, "{}", pat.display(cx.db))
write!(f, "{}", pat.display(cx.db, edition))
}
}
let edition = cx.db.crate_graph()[krate].edition;
let non_empty_enum = match scrut_ty.as_adt() {
Some((AdtId::EnumId(e), _)) => !cx.db.enum_data(e).variants.is_empty(),
_ => false,
};
if arms_is_empty && !non_empty_enum {
format!("type `{}` is non-empty", scrut_ty.display(cx.db))
format!("type `{}` is non-empty", scrut_ty.display(cx.db, edition))
} else {
let pat_display = |witness| DisplayWitness(witness, cx);
let pat_display = |witness| DisplayWitness(witness, cx, edition);
const LIMIT: usize = 3;
match &*witnesses {
[witness] => format!("`{}` not covered", pat_display(witness)),