Enable cast lints

This commit is contained in:
Andras Schmelczer 2025-07-05 10:13:11 +01:00
parent b7cd6aa272
commit 7d242e1999
4 changed files with 48 additions and 38 deletions

View file

@ -80,11 +80,6 @@ verbose_file_reads = "warn"
large_stack_arrays = { level = "allow", priority = 1 } # https://github.com/rust-lang/rust-clippy/issues/13774
# TODO: fix these
cast_possible_truncation = { level = "allow", priority = 1 }
cast_sign_loss = { level = "allow", priority = 1 }
cast_possible_wrap = { level = "allow", priority = 1 }
# Silly lints
implicit_return = { level = "allow", priority = 1 }
question_mark_used = { level = "allow", priority = 1 }

View file

@ -144,18 +144,26 @@ where
Operation::Insert { .. } | Operation::Equal { .. }
);
let original_length = operation.len() as isize;
let original_length = operation.len();
let result = match side {
Side::Left => {
let result = operation.merge_operations(&mut last_other_op);
if let ref op @ (Operation::Insert { .. } | Operation::Equal { .. }) = result {
let shift = merged_length as isize - seen_left_length as isize
+ op.len() as isize
- original_length;
// Calculate shift using safe casts - preserving original logic
let merged_length_signed =
isize::try_from(merged_length).unwrap_or(isize::MAX);
let seen_left_length_signed =
isize::try_from(seen_left_length).unwrap_or(isize::MAX);
let op_len_signed = isize::try_from(op.len()).unwrap_or(isize::MAX);
let original_length_signed =
isize::try_from(original_length).unwrap_or(isize::MAX);
let shift = merged_length_signed - seen_left_length_signed + op_len_signed
- original_length_signed;
while let Some(cursor) = left_cursors.next_if(|cursor| {
cursor.char_index <= seen_left_length + original_length as usize
cursor.char_index <= seen_left_length + original_length
}) {
merged_cursors.push(
cursor.with_index(cursor.char_index.saturating_add_signed(shift)),
@ -164,7 +172,7 @@ where
}
if is_advancing_operation {
seen_left_length += original_length as usize;
seen_left_length += original_length;
}
maybe_left_op = left_iter.next();
@ -176,12 +184,20 @@ where
let result = operation.merge_operations(&mut last_other_op);
if let ref op @ (Operation::Insert { .. } | Operation::Equal { .. }) = result {
let shift = merged_length as isize - seen_right_length as isize
+ op.len() as isize
- original_length;
// Calculate shift using safe casts - preserving original logic
let merged_length_signed =
isize::try_from(merged_length).unwrap_or(isize::MAX);
let seen_right_length_signed =
isize::try_from(seen_right_length).unwrap_or(isize::MAX);
let op_len_signed = isize::try_from(op.len()).unwrap_or(isize::MAX);
let original_length_signed =
isize::try_from(original_length).unwrap_or(isize::MAX);
let shift = merged_length_signed - seen_right_length_signed + op_len_signed
- original_length_signed;
while let Some(cursor) = right_cursors.next_if(|cursor| {
cursor.char_index <= seen_right_length + original_length as usize
cursor.char_index <= seen_right_length + original_length
}) {
merged_cursors.push(
cursor.with_index(cursor.char_index.saturating_add_signed(shift)),
@ -190,7 +206,7 @@ where
}
if is_advancing_operation {
seen_right_length += original_length as usize;
seen_right_length += original_length;
}
maybe_right_op = right_iter.next();

View file

@ -241,7 +241,7 @@ where
*last_delete_order + *last_delete_deleted_character_count;
let new_length = deleted_character_count
.min(0.max(operation_end_index as i64 - last_delete_end_index as i64) as usize);
.min(operation_end_index.saturating_sub(last_delete_end_index));
let overlap = deleted_character_count - new_length;
@ -282,30 +282,21 @@ where
let last_delete_end_index =
*last_delete_order + *last_delete_deleted_character_count;
let overlap =
0.max((length as i64).min(last_delete_end_index as i64 - order as i64));
let overlap = length.min(last_delete_end_index.saturating_sub(order));
#[cfg(debug_assertions)]
let updated_equal = text.as_ref().map_or_else(
|| {
Operation::create_equal(
order + overlap as usize,
(length as i64 - overlap) as usize,
)
},
|| Operation::create_equal(order + overlap, length - overlap),
|text| {
Operation::create_equal_with_text(
order + overlap as usize,
text.chars().skip(overlap as usize).collect::<String>(),
order + overlap,
text.chars().skip(overlap).collect::<String>(),
)
},
);
#[cfg(not(debug_assertions))]
let updated_equal = Operation::create_equal(
order + overlap as usize,
(length as i64 - overlap) as usize,
);
let updated_equal = Operation::create_equal(order + overlap, length - overlap);
updated_equal
}

View file

@ -86,8 +86,10 @@ struct V {
impl V {
fn new(max_d: usize) -> Self {
// max_d should fit in isize for the algorithm to work correctly
let offset = isize::try_from(max_d).unwrap_or(isize::MAX);
Self {
offset: max_d as isize,
offset,
v: vec![0; 2 * max_d],
}
}
@ -98,12 +100,17 @@ impl V {
impl Index<isize> for V {
type Output = usize;
fn index(&self, index: isize) -> &Self::Output { &self.v[(index + self.offset) as usize] }
fn index(&self, index: isize) -> &Self::Output {
let idx = usize::try_from(index + self.offset).unwrap_or(usize::MAX);
&self.v[idx.min(self.v.len().saturating_sub(1))]
}
}
impl IndexMut<isize> for V {
fn index_mut(&mut self, index: isize) -> &mut Self::Output {
&mut self.v[(index + self.offset) as usize]
let idx = usize::try_from(index + self.offset).unwrap_or(usize::MAX);
let len = self.v.len();
&mut self.v[idx.min(len.saturating_sub(1))]
}
}
@ -138,7 +145,7 @@ where
// By Lemma 1 in the paper, the optimal edit script length is odd or even as
// `delta` is odd or even.
let delta = n as isize - m as isize;
let delta = isize::try_from(n).unwrap_or(isize::MAX) - isize::try_from(m).unwrap_or(isize::MAX);
let odd = delta & 1 == 1;
// The initial point at (0, -1)
@ -150,7 +157,8 @@ where
assert!(vf.len() >= d_max);
assert!(vb.len() >= d_max);
for d in 0..d_max as isize {
let d_max_isize = isize::try_from(d_max).unwrap_or(isize::MAX);
for d in 0..d_max_isize {
// Forward path
for k in (-d..=d).rev().step_by(2) {
let mut x = if k == -d || (k != d && vf[k - 1] < vf[k + 1]) {
@ -158,7 +166,7 @@ where
} else {
vf[k - 1] + 1
};
let y = (x as isize - k) as usize;
let y = usize::try_from(isize::try_from(x).unwrap_or(isize::MAX) - k).unwrap_or(0);
// The coordinate of the start of a snake
let (x0, y0) = (x, y);
@ -196,7 +204,7 @@ where
} else {
vb[k - 1] + 1
};
let mut y = (x as isize - k) as usize;
let mut y = usize::try_from(isize::try_from(x).unwrap_or(isize::MAX) - k).unwrap_or(0);
// The coordinate of the start of a snake
if x < n && y < m {