Function op_binary

arrow-string/src/binary_like.rs:143–162

(
    op: Op,
    l: impl Iterator<Item = Option<&'a [u8]>>,
    r: impl Iterator<Item = Option<&'a [u8]>>,
)

#[inline(never)]
fn op_binary<'a>(
    op: Op,
    l: impl Iterator<Item = Option<&'a [u8]>>,
    r: impl Iterator<Item = Option<&'a [u8]>>,
) -> Result<BooleanArray, ArrowError> {
    match op {
        Op::Contains => Ok(l
            .zip(r)
            .map(|(l, r)| Some(bytes_contains(l?, r?)))
            .collect()),
        Op::StartsWith => Ok(l
            .zip(r)
            .map(|(l, r)| Some(BinaryPredicate::StartsWith(r?).evaluate(l?)))
            .collect()),
        Op::EndsWith => Ok(l
            .zip(r)
            .map(|(l, r)| Some(BinaryPredicate::EndsWith(r?).evaluate(l?)))
            .collect()),
    }
}

fn bytes_contains(haystack: &[u8], needle: &[u8]) -> bool {
    memchr::memmem::find(haystack, needle).is_some()