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Avoid having to handle an Option in the type system

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This commit is contained in:
Oli Scherer 2025-02-05 15:22:10 +00:00
parent 4f2b108816
commit 0e7b283573
21 changed files with 146 additions and 109 deletions
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22
compiler/rustc_lint/src/types.rs
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@ -883,22 +883,14 @@ fn ty_is_known_nonnull<'tcx>(
try {
match **pat {
ty::PatternKind::Range { start, end, include_end } => {
match (start, end) {
(Some(start), None) => {
start.try_to_value()?.try_to_bits(tcx, typing_env)? > 0
}
(Some(start), Some(end)) => {
let start =
start.try_to_value()?.try_to_bits(tcx, typing_env)?;
let end =
end.try_to_value()?.try_to_bits(tcx, typing_env)?;
let start = start.try_to_value()?.try_to_bits(tcx, typing_env)?;
let end = end.try_to_value()?.try_to_bits(tcx, typing_env)?;
match include_end {
RangeEnd::Included => start > 0 && end >= start,
RangeEnd::Excluded => start > 0 && end > start,
}
}
_ => false,
match include_end {
// This also works for negative numbers, as we just need
// to ensure we aren't wrapping over zero.
RangeEnd::Included => start > 0 && end >= start,
RangeEnd::Excluded => start > 0 && end > start,
}
}
}