polars_arrow/legacy/kernels/take_agg/
boolean.rs

1#![allow(unsafe_op_in_unsafe_fn)]
2use super::*;
3
4/// Take kernel for single chunk and an iterator as index.
5/// # Safety
6/// caller must ensure iterators indexes are in bounds
7#[inline]
8pub unsafe fn take_min_bool_iter_unchecked_nulls<I: IntoIterator<Item = usize>>(
9    arr: &BooleanArray,
10    indices: I,
11    len: IdxSize,
12) -> Option<bool> {
13    let mut null_count = 0 as IdxSize;
14    let validity = arr.validity().unwrap();
15
16    for idx in indices {
17        if validity.get_bit_unchecked(idx) {
18            if !arr.value_unchecked(idx) {
19                return Some(false);
20            }
21        } else {
22            null_count += 1;
23        }
24    }
25    if null_count == len { None } else { Some(true) }
26}
27
28/// Take kernel for single chunk and an iterator as index.
29/// # Safety
30/// caller must ensure iterators indexes are in bounds
31#[inline]
32pub unsafe fn take_min_bool_iter_unchecked_no_nulls<I: IntoIterator<Item = usize>>(
33    arr: &BooleanArray,
34    indices: I,
35) -> Option<bool> {
36    if arr.is_empty() {
37        return None;
38    }
39
40    for idx in indices {
41        if !arr.value_unchecked(idx) {
42            return Some(false);
43        }
44    }
45    Some(true)
46}
47
48/// Take kernel for single chunk and an iterator as index.
49/// # Safety
50/// caller must ensure iterators indexes are in bounds
51#[inline]
52pub unsafe fn take_max_bool_iter_unchecked_nulls<I: IntoIterator<Item = usize>>(
53    arr: &BooleanArray,
54    indices: I,
55    len: IdxSize,
56) -> Option<bool> {
57    let mut null_count = 0 as IdxSize;
58    let validity = arr.validity().unwrap();
59
60    for idx in indices {
61        if validity.get_bit_unchecked(idx) {
62            if arr.value_unchecked(idx) {
63                return Some(true);
64            }
65        } else {
66            null_count += 1;
67        }
68    }
69    if null_count == len { None } else { Some(false) }
70}
71
72/// Take kernel for single chunk and an iterator as index.
73/// # Safety
74/// caller must ensure iterators indexes are in bounds
75#[inline]
76pub unsafe fn take_max_bool_iter_unchecked_no_nulls<I: IntoIterator<Item = usize>>(
77    arr: &BooleanArray,
78    indices: I,
79) -> Option<bool> {
80    if arr.is_empty() {
81        return None;
82    }
83
84    for idx in indices {
85        if arr.value_unchecked(idx) {
86            return Some(true);
87        }
88    }
89    Some(false)
90}
polars_arrow/legacy/kernels/take_agg/boolean.rs

polars_arrow/legacy/kernels/take_agg/
boolean.rs
