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split up the manual_memcpy test

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This commit is contained in:
rail 2020-09-28 02:43:45 +13:00
parent 9725f00f4d
commit ec94bd6cb4
4 changed files with 171 additions and 164 deletions
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64
tests/ui/manual_memcpy/with_loop_counters.rs Normal file
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@ -0,0 +1,64 @@
#![warn(clippy::needless_range_loop, clippy::manual_memcpy)]
pub fn manual_copy_with_counters(src: &[i32], dst: &mut [i32], dst2: &mut [i32]) {
let mut count = 0;
for i in 3..src.len() {
dst[i] = src[count];
count += 1;
}
let mut count = 0;
for i in 3..src.len() {
dst[count] = src[i];
count += 1;
}
let mut count = 3;
for i in 0..src.len() {
dst[count] = src[i];
count += 1;
}
let mut count = 3;
for i in 0..src.len() {
dst[i] = src[count];
count += 1;
}
let mut count = 0;
for i in 3..(3 + src.len()) {
dst[i] = src[count];
count += 1;
}
let mut count = 3;
for i in 5..src.len() {
dst[i] = src[count - 2];
count += 1;
}
let mut count = 5;
for i in 3..10 {
dst[i] = src[count];
count += 1;
}
let mut count = 3;
let mut count2 = 30;
for i in 0..src.len() {
dst[count] = src[i];
dst2[count2] = src[i];
count += 1;
count2 += 1;
}
// make sure parentheses are added properly to bitwise operators, which have lower precedence than
// arithmetric ones
let mut count = 0 << 1;
for i in 0..1 << 1 {
dst[count] = src[i + 2];
count += 1;
}
}
fn main() {}

93
tests/ui/manual_memcpy/with_loop_counters.stderr Normal file
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@ -0,0 +1,93 @@
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:5:5
|
LL | / for i in 3..src.len() {
LL | | dst[i] = src[count];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[3..src.len()].clone_from_slice(&src[..(src.len() - 3)]);`
|
= note: `-D clippy::manual-memcpy` implied by `-D warnings`
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:11:5
|
LL | / for i in 3..src.len() {
LL | | dst[count] = src[i];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[..(src.len() - 3)].clone_from_slice(&src[3..]);`
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:17:5
|
LL | / for i in 0..src.len() {
LL | | dst[count] = src[i];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[3..(src.len() + 3)].clone_from_slice(&src[..]);`
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:23:5
|
LL | / for i in 0..src.len() {
LL | | dst[i] = src[count];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[..src.len()].clone_from_slice(&src[3..(src.len() + 3)]);`
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:29:5
|
LL | / for i in 3..(3 + src.len()) {
LL | | dst[i] = src[count];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[3..((3 + src.len()))].clone_from_slice(&src[..((3 + src.len()) - 3)]);`
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:35:5
|
LL | / for i in 5..src.len() {
LL | | dst[i] = src[count - 2];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[5..src.len()].clone_from_slice(&src[(3 - 2)..((src.len() - 2) + 3 - 5)]);`
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:41:5
|
LL | / for i in 3..10 {
LL | | dst[i] = src[count];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[3..10].clone_from_slice(&src[5..(10 + 5 - 3)]);`
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:48:5
|
LL | / for i in 0..src.len() {
LL | | dst[count] = src[i];
LL | | dst2[count2] = src[i];
LL | | count += 1;
LL | | count2 += 1;
LL | | }
| |_____^
|
help: try replacing the loop by
|
LL | dst[3..(src.len() + 3)].clone_from_slice(&src[..]);
LL | dst2[30..(src.len() + 30)].clone_from_slice(&src[..]);
|
error: it looks like you're manually copying between slices
--> $DIR/with_loop_counters.rs:58:5
|
LL | / for i in 0..1 << 1 {
LL | | dst[count] = src[i + 2];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[(0 << 1)..((1 << 1) + (0 << 1))].clone_from_slice(&src[2..((1 << 1) + 2)]);`
error: aborting due to 9 previous errors

61
tests/ui/manual_memcpy.rs → tests/ui/manual_memcpy/without_loop_counters.rs
View File

@ -115,67 +115,6 @@ fn index(&self, _: usize) -> &i32 {
}
}
pub fn manual_copy_with_counters(src: &[i32], dst: &mut [i32], dst2: &mut [i32]) {
let mut count = 0;
for i in 3..src.len() {
dst[i] = src[count];
count += 1;
}
let mut count = 0;
for i in 3..src.len() {
dst[count] = src[i];
count += 1;
}
let mut count = 3;
for i in 0..src.len() {
dst[count] = src[i];
count += 1;
}
let mut count = 3;
for i in 0..src.len() {
dst[i] = src[count];
count += 1;
}
let mut count = 0;
for i in 3..(3 + src.len()) {
dst[i] = src[count];
count += 1;
}
let mut count = 3;
for i in 5..src.len() {
dst[i] = src[count - 2];
count += 1;
}
let mut count = 5;
for i in 3..10 {
dst[i] = src[count];
count += 1;
}
let mut count = 3;
let mut count2 = 30;
for i in 0..src.len() {
dst[count] = src[i];
dst2[count2] = src[i];
count += 1;
count2 += 1;
}
// make sure parentheses are added properly to bitwise operators, which have lower precedence than
// arithmetric ones
let mut count = 0 << 1;
for i in 0..1 << 1 {
dst[count] = src[i + 2];
count += 1;
}
}
#[warn(clippy::needless_range_loop, clippy::manual_memcpy)]
pub fn manual_clone(src: &[String], dst: &mut [String]) {
for i in 0..src.len() {

117
tests/ui/manual_memcpy.stderr → tests/ui/manual_memcpy/without_loop_counters.stderr
View File

@ -1,5 +1,5 @@
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:7:5
--> $DIR/without_loop_counters.rs:7:5
|
LL | / for i in 0..src.len() {
LL | | dst[i] = src[i];
@ -9,7 +9,7 @@ LL | | }
= note: `-D clippy::manual-memcpy` implied by `-D warnings`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:12:5
--> $DIR/without_loop_counters.rs:12:5
|
LL | / for i in 0..src.len() {
LL | | dst[i + 10] = src[i];
@ -17,7 +17,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst[10..(src.len() + 10)].clone_from_slice(&src[..]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:17:5
--> $DIR/without_loop_counters.rs:17:5
|
LL | / for i in 0..src.len() {
LL | | dst[i] = src[i + 10];
@ -25,7 +25,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst[..src.len()].clone_from_slice(&src[10..(src.len() + 10)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:22:5
--> $DIR/without_loop_counters.rs:22:5
|
LL | / for i in 11..src.len() {
LL | | dst[i] = src[i - 10];
@ -33,7 +33,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst[11..src.len()].clone_from_slice(&src[(11 - 10)..(src.len() - 10)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:27:5
--> $DIR/without_loop_counters.rs:27:5
|
LL | / for i in 0..dst.len() {
LL | | dst[i] = src[i];
@ -41,7 +41,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst.clone_from_slice(&src[..dst.len()]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:40:5
--> $DIR/without_loop_counters.rs:40:5
|
LL | / for i in 10..256 {
LL | | dst[i] = src[i - 5];
@ -56,7 +56,7 @@ LL | dst2[(10 + 500)..(256 + 500)].clone_from_slice(&src[10..256]);
|
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:52:5
--> $DIR/without_loop_counters.rs:52:5
|
LL | / for i in 10..LOOP_OFFSET {
LL | | dst[i + LOOP_OFFSET] = src[i - some_var];
@ -64,7 +64,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst[(10 + LOOP_OFFSET)..(LOOP_OFFSET + LOOP_OFFSET)].clone_from_slice(&src[(10 - some_var)..(LOOP_OFFSET - some_var)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:65:5
--> $DIR/without_loop_counters.rs:65:5
|
LL | / for i in 0..src_vec.len() {
LL | | dst_vec[i] = src_vec[i];
@ -72,7 +72,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst_vec[..src_vec.len()].clone_from_slice(&src_vec[..]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:94:5
--> $DIR/without_loop_counters.rs:94:5
|
LL | / for i in from..from + src.len() {
LL | | dst[i] = src[i - from];
@ -80,7 +80,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst[from..(from + src.len())].clone_from_slice(&src[..(from + src.len() - from)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:98:5
--> $DIR/without_loop_counters.rs:98:5
|
LL | / for i in from..from + 3 {
LL | | dst[i] = src[i - from];
@ -88,7 +88,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst[from..(from + 3)].clone_from_slice(&src[..(from + 3 - from)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:103:5
--> $DIR/without_loop_counters.rs:103:5
|
LL | / for i in 0..5 {
LL | | dst[i - 0] = src[i];
@ -96,7 +96,7 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst[..5].clone_from_slice(&src[..5]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:108:5
--> $DIR/without_loop_counters.rs:108:5
|
LL | / for i in 0..0 {
LL | | dst[i] = src[i];
@ -104,101 +104,12 @@ LL | | }
| |_____^ help: try replacing the loop by: `dst[..0].clone_from_slice(&src[..0]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:120:5
|
LL | / for i in 3..src.len() {
LL | | dst[i] = src[count];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[3..src.len()].clone_from_slice(&src[..(src.len() - 3)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:126:5
|
LL | / for i in 3..src.len() {
LL | | dst[count] = src[i];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[..(src.len() - 3)].clone_from_slice(&src[3..]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:132:5
|
LL | / for i in 0..src.len() {
LL | | dst[count] = src[i];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[3..(src.len() + 3)].clone_from_slice(&src[..]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:138:5
|
LL | / for i in 0..src.len() {
LL | | dst[i] = src[count];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[..src.len()].clone_from_slice(&src[3..(src.len() + 3)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:144:5
|
LL | / for i in 3..(3 + src.len()) {
LL | | dst[i] = src[count];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[3..((3 + src.len()))].clone_from_slice(&src[..((3 + src.len()) - 3)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:150:5
|
LL | / for i in 5..src.len() {
LL | | dst[i] = src[count - 2];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[5..src.len()].clone_from_slice(&src[(3 - 2)..((src.len() - 2) + 3 - 5)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:156:5
|
LL | / for i in 3..10 {
LL | | dst[i] = src[count];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[3..10].clone_from_slice(&src[5..(10 + 5 - 3)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:163:5
|
LL | / for i in 0..src.len() {
LL | | dst[count] = src[i];
LL | | dst2[count2] = src[i];
LL | | count += 1;
LL | | count2 += 1;
LL | | }
| |_____^
|
help: try replacing the loop by
|
LL | dst[3..(src.len() + 3)].clone_from_slice(&src[..]);
LL | dst2[30..(src.len() + 30)].clone_from_slice(&src[..]);
|
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:173:5
|
LL | / for i in 0..1 << 1 {
LL | | dst[count] = src[i + 2];
LL | | count += 1;
LL | | }
| |_____^ help: try replacing the loop by: `dst[(0 << 1)..((1 << 1) + (0 << 1))].clone_from_slice(&src[2..((1 << 1) + 2)]);`
error: it looks like you're manually copying between slices
--> $DIR/manual_memcpy.rs:181:5
--> $DIR/without_loop_counters.rs:120:5
|
LL | / for i in 0..src.len() {
LL | | dst[i] = src[i].clone();
LL | | }
| |_____^ help: try replacing the loop by: `dst[..src.len()].clone_from_slice(&src[..]);`
error: aborting due to 22 previous errors
error: aborting due to 13 previous errors