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Add unreachable code rule (#5384)

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Co-authored-by: Thomas de Zeeuw <thomas@astral.sh>
Co-authored-by: Micha Reiser <micha@reiser.io>
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Thomas de Zeeuw 2023-07-04 16:27:23 +02:00 • committed by GitHub
parent 937de121f3
commit 0b963ddcfa
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30 changed files with 4688 additions and 4 deletions
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7
crates/ruff_macros/src/newtype_index.rs
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@ -36,10 +36,11 @@ pub(super) fn generate_newtype_index(item: ItemStruct) -> syn::Result<proc_macro
#vis #struct_token #ident(std::num::NonZeroU32)#semi_token
impl #ident {
const MAX: u32 = u32::MAX - 1;
const MAX_VALUE: u32 = u32::MAX - 1;
const MAX: Self = Self::from_u32(Self::MAX_VALUE);
#vis const fn from_usize(value: usize) -> Self {
assert!(value <= Self::MAX as usize);
assert!(value <= Self::MAX_VALUE as usize);
// SAFETY:
// * The `value < u32::MAX` guarantees that the add doesn't overflow.
@ -49,7 +50,7 @@ pub(super) fn generate_newtype_index(item: ItemStruct) -> syn::Result<proc_macro
}
#vis const fn from_u32(value: u32) -> Self {
assert!(value <= Self::MAX);
assert!(value <= Self::MAX_VALUE);
// SAFETY:
// * The `value < u32::MAX` guarantees that the add doesn't overflow.