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use std::sync::Arc;
use crate::array::{Array, ArrayData, BooleanArray};
use crate::buffer::Buffer;
use crate::compute::util::apply_bin_op_to_option_bitmap;
use crate::datatypes::DataType;
use crate::error::{ArrowError, Result};
fn binary_boolean_kernel<F>(
left: &BooleanArray,
right: &BooleanArray,
op: F,
) -> Result<BooleanArray>
where
F: Fn(&Buffer, &Buffer) -> Result<Buffer>,
{
if left.offset() != right.offset() {
return Err(ArrowError::ComputeError(
"Cannot apply Bitwise binary op when arrays have different offsets."
.to_string(),
));
}
let left_data = left.data();
let right_data = right.data();
let null_bit_buffer = apply_bin_op_to_option_bitmap(
left_data.null_bitmap(),
right_data.null_bitmap(),
|a, b| a & b,
)?;
let values = op(&left_data.buffers()[0], &right_data.buffers()[0])?;
let data = ArrayData::new(
DataType::Boolean,
left.len(),
None,
null_bit_buffer,
left.offset(),
vec![values],
vec![],
);
Ok(BooleanArray::from(Arc::new(data)))
}
pub fn and(left: &BooleanArray, right: &BooleanArray) -> Result<BooleanArray> {
binary_boolean_kernel(&left, &right, |a, b| a & b)
}
pub fn or(left: &BooleanArray, right: &BooleanArray) -> Result<BooleanArray> {
binary_boolean_kernel(&left, &right, |a, b| a | b)
}
pub fn not(left: &BooleanArray) -> Result<BooleanArray> {
let data = left.data();
let null_bit_buffer = data.null_bitmap().as_ref().map(|b| b.bits.clone());
let values = !&data.buffers()[0];
let data = ArrayData::new(
DataType::Boolean,
left.len(),
None,
null_bit_buffer,
left.offset(),
vec![values],
vec![],
);
Ok(BooleanArray::from(Arc::new(data)))
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_bool_array_and() {
let a = BooleanArray::from(vec![false, false, true, true]);
let b = BooleanArray::from(vec![false, true, false, true]);
let c = and(&a, &b).unwrap();
assert_eq!(false, c.value(0));
assert_eq!(false, c.value(1));
assert_eq!(false, c.value(2));
assert_eq!(true, c.value(3));
}
#[test]
fn test_bool_array_or() {
let a = BooleanArray::from(vec![false, false, true, true]);
let b = BooleanArray::from(vec![false, true, false, true]);
let c = or(&a, &b).unwrap();
assert_eq!(false, c.value(0));
assert_eq!(true, c.value(1));
assert_eq!(true, c.value(2));
assert_eq!(true, c.value(3));
}
#[test]
fn test_bool_array_or_nulls() {
let a = BooleanArray::from(vec![None, Some(false), None, Some(false)]);
let b = BooleanArray::from(vec![None, None, Some(false), Some(false)]);
let c = or(&a, &b).unwrap();
assert_eq!(true, c.is_null(0));
assert_eq!(true, c.is_null(1));
assert_eq!(true, c.is_null(2));
assert_eq!(false, c.is_null(3));
}
#[test]
fn test_bool_array_not() {
let a = BooleanArray::from(vec![false, false, true, true]);
let c = not(&a).unwrap();
assert_eq!(true, c.value(0));
assert_eq!(true, c.value(1));
assert_eq!(false, c.value(2));
assert_eq!(false, c.value(3));
}
#[test]
fn test_bool_array_and_nulls() {
let a = BooleanArray::from(vec![None, Some(false), None, Some(false)]);
let b = BooleanArray::from(vec![None, None, Some(false), Some(false)]);
let c = and(&a, &b).unwrap();
assert_eq!(true, c.is_null(0));
assert_eq!(true, c.is_null(1));
assert_eq!(true, c.is_null(2));
assert_eq!(false, c.is_null(3));
}
}