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ARROW-10448: [Rust] Remove PrimitiveArray::new that can cause UB #8560

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ARROW-10448: [Rust] Remove PrimitiveArray::new that can cause UB #8560

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38 changes: 4 additions & 34 deletions rust/arrow/src/array/array.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -412,16 +412,6 @@ pub struct PrimitiveArray<T: ArrowPrimitiveType> {
}

impl<T: ArrowPrimitiveType> PrimitiveArray<T> {
pub fn new(length: usize, values: Buffer, null_count: usize, offset: usize) -> Self {
let array_data = ArrayData::builder(T::DATA_TYPE)
.len(length)
.add_buffer(values)
.null_count(null_count)
.offset(offset)
.build();
PrimitiveArray::from(array_data)
}

/// Returns the length of this array.
pub fn len(&self) -> usize {
self.data.len()
Expand Down Expand Up @@ -2423,10 +2413,9 @@ mod tests {
#[test]
fn test_primitive_array_from_vec() {
let buf = Buffer::from(&[0, 1, 2, 3, 4].to_byte_slice());
let buf2 = buf.clone();
let arr = Int32Array::new(5, buf, 0, 0);
let arr = Int32Array::from(vec![0, 1, 2, 3, 4]);
let slice = unsafe { std::slice::from_raw_parts(arr.raw_values(), 5) };
assert_eq!(buf2, arr.values());
assert_eq!(buf, arr.values());
assert_eq!(&[0, 1, 2, 3, 4], slice);
assert_eq!(5, arr.len());
assert_eq!(0, arr.offset());
Expand Down Expand Up @@ -2716,8 +2705,7 @@ mod tests {

#[test]
fn test_int32_fmt_debug() {
let buf = Buffer::from(&[0, 1, 2, 3, 4].to_byte_slice());
let arr = Int32Array::new(5, buf, 0, 0);
let arr = Int32Array::from(vec![0, 1, 2, 3, 4]);
assert_eq!(
"PrimitiveArray<Int32>\n[\n 0,\n 1,\n 2,\n 3,\n 4,\n]",
format!("{:?}", arr)
Expand Down Expand Up @@ -2757,8 +2745,7 @@ mod tests {

#[test]
fn test_boolean_fmt_debug() {
let buf = Buffer::from(&[true, false, false].to_byte_slice());
let arr = BooleanArray::new(3, buf, 0, 0);
let arr = BooleanArray::from(vec![true, false, false]);
assert_eq!(
"PrimitiveArray<Boolean>\n[\n true,\n false,\n false,\n]",
format!("{:?}", arr)
Expand Down Expand Up @@ -2833,23 +2820,6 @@ mod tests {
Int32Array::from(data);
}

#[test]
fn test_boolean_array_new() {
// 00000010 01001000
let buf = Buffer::from([72_u8, 2_u8]);
let buf2 = buf.clone();
let arr = BooleanArray::new(10, buf, 0, 0);
assert_eq!(buf2, arr.values());
assert_eq!(10, arr.len());
assert_eq!(0, arr.offset());
assert_eq!(0, arr.null_count());
for i in 0..10 {
assert!(!arr.is_null(i));
assert!(arr.is_valid(i));
assert_eq!(i == 3 || i == 6 || i == 9, arr.value(i), "failed at {}", i)
}
}

#[test]
fn test_boolean_array_from_vec() {
let buf = Buffer::from([10_u8]);
Expand Down