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vortex_array/arrays/primitive/vtable/
visitor.rs

1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: Copyright the Vortex contributors
3
4use crate::ArrayBufferVisitor;
5use crate::ArrayChildVisitor;
6use crate::ArrayRef;
7use crate::arrays::PrimitiveArray;
8use crate::arrays::PrimitiveVTable;
9use crate::vtable::ValidityHelper;
10use crate::vtable::VisitorVTable;
11use crate::vtable::validity_nchildren;
12use crate::vtable::validity_to_child;
13
14impl VisitorVTable<PrimitiveVTable> for PrimitiveVTable {
15    fn visit_buffers(array: &PrimitiveArray, visitor: &mut dyn ArrayBufferVisitor) {
16        visitor.visit_buffer_handle("values", array.buffer_handle());
17    }
18
19    fn nbuffers(_array: &PrimitiveArray) -> usize {
20        1
21    }
22
23    fn visit_children(array: &PrimitiveArray, visitor: &mut dyn ArrayChildVisitor) {
24        visitor.visit_validity(array.validity(), array.len());
25    }
26
27    fn nchildren(array: &PrimitiveArray) -> usize {
28        validity_nchildren(array.validity())
29    }
30
31    fn nth_child(array: &PrimitiveArray, idx: usize) -> Option<ArrayRef> {
32        match idx {
33            0 => validity_to_child(array.validity(), array.len()),
34            _ => None,
35        }
36    }
37}