Function bytes_ptr_eq

arrow-select/src/dictionary.rs:155–167

Performs a cheap, pointer-based comparison of two byte array See [`ScalarBuffer::ptr_eq`]

(a: &dyn Array, b: &dyn Array)

///
/// See [`ScalarBuffer::ptr_eq`]
fn bytes_ptr_eq<T: ByteArrayType>(a: &dyn Array, b: &dyn Array) -> bool {
    match (a.as_bytes_opt::<T>(), b.as_bytes_opt::<T>()) {
        (Some(a), Some(b)) => {
            let values_eq = a.values().ptr_eq(b.values()) && a.offsets().ptr_eq(b.offsets());
            match (a.nulls(), b.nulls()) {
                (Some(a), Some(b)) => values_eq && a.inner().ptr_eq(b.inner()),
                (None, None) => values_eq,
                _ => false,
            }
        }
        _ => false,
    }
}

/// A type-erased function that compares two array for pointer equality
type PtrEq = fn(&dyn Array, &dyn Array) -> bool;