vortex_array/arrays/constant/compute/
cast.rs

1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: Copyright the Vortex contributors
3
4use vortex_dtype::DType;
5use vortex_error::VortexResult;
6
7use crate::ArrayRef;
8use crate::IntoArray;
9use crate::arrays::ConstantArray;
10use crate::arrays::ConstantVTable;
11use crate::compute::CastReduce;
12
13impl CastReduce for ConstantVTable {
14    fn cast(array: &ConstantArray, dtype: &DType) -> VortexResult<Option<ArrayRef>> {
15        match array.scalar().cast(dtype) {
16            Ok(scalar) => Ok(Some(ConstantArray::new(scalar, array.len()).into_array())),
17            Err(_e) => Ok(None),
18        }
19    }
20}
21
22#[cfg(test)]
23mod tests {
24    use rstest::rstest;
25
26    use crate::IntoArray;
27    use crate::arrays::ConstantArray;
28    use crate::compute::conformance::cast::test_cast_conformance;
29    use crate::scalar::Scalar;
30
31    #[rstest]
32    #[case(ConstantArray::new(Scalar::from(42u32), 5).into_array())]
33    #[case(ConstantArray::new(Scalar::from(-100i32), 10).into_array())]
34    #[case(ConstantArray::new(Scalar::from(3.5f32), 3).into_array())]
35    #[case(ConstantArray::new(Scalar::from(true), 7).into_array())]
36    #[case(ConstantArray::new(Scalar::null_native::<i32>(), 4).into_array())]
37    #[case(ConstantArray::new(Scalar::from(255u8), 1).into_array())]
38    fn test_cast_constant_conformance(#[case] array: crate::ArrayRef) {
39        test_cast_conformance(array.as_ref());
40    }
41}
vortex_array/arrays/constant/compute/cast.rs

vortex_array/arrays/constant/compute/
cast.rs
