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Disentangle the arena from MatchCheckCtxt

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This commit is contained in:
Nadrieril 2023-12-11 17:57:53 +01:00
parent 081c3dcf43
commit 3ad76f9325
6 changed files with 140 additions and 117 deletions
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8
compiler/rustc_pattern_analysis/src/lib.rs
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@ -39,17 +39,19 @@ pub fn analyze_match<'p, 'tcx>(
arms: &[MatchArm<'p, 'tcx>],
scrut_ty: Ty<'tcx>,
) -> UsefulnessReport<'p, 'tcx> {
// Arena to store the extra wildcards we construct during analysis.
let wildcard_arena = cx.pattern_arena;
let pat_column = PatternColumn::new(arms);
let report = compute_match_usefulness(cx, arms, scrut_ty);
let report = compute_match_usefulness(cx, arms, scrut_ty, wildcard_arena);
// Lint on ranges that overlap on their endpoints, which is likely a mistake.
lint_overlapping_range_endpoints(cx, &pat_column);
lint_overlapping_range_endpoints(cx, &pat_column, wildcard_arena);
// Run the non_exhaustive_omitted_patterns lint. Only run on refutable patterns to avoid hitting
// `if let`s. Only run if the match is exhaustive otherwise the error is redundant.
if cx.refutable && report.non_exhaustiveness_witnesses.is_empty() {
lint_nonexhaustive_missing_variants(cx, arms, &pat_column, scrut_ty)
lint_nonexhaustive_missing_variants(cx, arms, &pat_column, scrut_ty, wildcard_arena)
}
report