16935267080

Committed 13 Aug 2025 11:00AM UTC coverage: 24.312% (-63.3%) from 87.658%

Build # 16935267080

Build Type

Pull #4226

github

Committed by

web-flow

Commit Message

Merge 81b48c7fb into baa6ea202

Pull Request Pull Request #4226: Support converting TimestampTZ to and from duckdb

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72.73

/vortex-array/src/compute/cast.rs

// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright the Vortex contributors

use std::sync::LazyLock;

use arcref::ArcRef;
use vortex_dtype::DType;
use vortex_error::{VortexError, VortexResult, vortex_bail, vortex_err};

use crate::compute::{ComputeFn, ComputeFnVTable, InvocationArgs, Kernel, Output};
use crate::vtable::VTable;
use crate::{Array, ArrayRef};

static CAST_FN: LazyLock<ComputeFn> = LazyLock::new(|| {
    let compute = ComputeFn::new("cast".into(), ArcRef::new_ref(&Cast));
    for kernel in inventory::iter::<CastKernelRef> {
        compute.register_kernel(kernel.0.clone());
    }
    compute
});

/// Attempt to cast an array to a desired DType.
///
/// Some array support the ability to narrow or upcast.
pub fn cast(array: &dyn Array, dtype: &DType) -> VortexResult<ArrayRef> {
    CAST_FN
        .invoke(&InvocationArgs {
            inputs: &[array.into(), dtype.into()],
            options: &(),
        })?
        .unwrap_array()
}

struct Cast;

impl ComputeFnVTable for Cast {
    fn invoke(
        &self,
        args: &InvocationArgs,
        kernels: &[ArcRef<dyn Kernel>],
    ) -> VortexResult<Output> {
        let CastArgs { array, dtype } = CastArgs::try_from(args)?;

        if array.dtype() == dtype {
            return Ok(array.to_array().into());
        }

        // TODO(ngates): check for null_count if dtype is non-nullable

        for kernel in kernels {
            if let Some(output) = kernel.invoke(args)? {
                return Ok(output);
            }
        }
        if let Some(output) = array.invoke(&CAST_FN, args)? {
            return Ok(output);
        }

        // Otherwise, we fall back to the canonical implementations.
        log::debug!(
            "Falling back to canonical cast for encoding {} and dtype {} to {}",
            array.encoding_id(),
            array.dtype(),
            dtype
        );

        if array.is_canonical() {
            vortex_bail!(
                "No compute kernel to cast array {} with dtype {} to {}",
                array.encoding_id(),
                array.dtype(),
                dtype
            );
        }

        Ok(cast(array.to_canonical()?.as_ref(), dtype)?.into())
    }

    fn return_dtype(&self, args: &InvocationArgs) -> VortexResult<DType> {
        let CastArgs { dtype, .. } = CastArgs::try_from(args)?;
        Ok(dtype.clone())
    }

    fn return_len(&self, args: &InvocationArgs) -> VortexResult<usize> {
        let CastArgs { array, .. } = CastArgs::try_from(args)?;
        Ok(array.len())
    }

    fn is_elementwise(&self) -> bool {
        true
    }
}

struct CastArgs<'a> {
    array: &'a dyn Array,
    dtype: &'a DType,
}

impl<'a> TryFrom<&InvocationArgs<'a>> for CastArgs<'a> {
    type Error = VortexError;

    fn try_from(args: &InvocationArgs<'a>) -> Result<Self, Self::Error> {
        if args.inputs.len() != 2 {
            vortex_bail!(
                "Cast function requires 2 arguments, but got {}",
                args.inputs.len()
            );
        }
        let array = args.inputs[0]
            .array()
            .ok_or_else(|| vortex_err!("Missing array argument"))?;
        let dtype = args.inputs[1]
            .dtype()
            .ok_or_else(|| vortex_err!("Missing dtype argument"))?;

        Ok(CastArgs { array, dtype })
    }
}

pub struct CastKernelRef(ArcRef<dyn Kernel>);
inventory::collect!(CastKernelRef);

pub trait CastKernel: VTable {
    fn cast(&self, array: &Self::Array, dtype: &DType) -> VortexResult<Option<ArrayRef>>;
}

#[derive(Debug)]
pub struct CastKernelAdapter<V: VTable>(pub V);

impl<V: VTable + CastKernel> CastKernelAdapter<V> {
    pub const fn lift(&'static self) -> CastKernelRef {
        CastKernelRef(ArcRef::new_ref(self))
    }
}

impl<V: VTable + CastKernel> Kernel for CastKernelAdapter<V> {
    fn invoke(&self, args: &InvocationArgs) -> VortexResult<Option<Output>> {
        let CastArgs { array, dtype } = CastArgs::try_from(args)?;
        let Some(array) = array.as_opt::<V>() else {
            return Ok(None);
        };

        Ok(V::cast(&self.0, array, dtype)?.map(|o| o.into()))
    }
}

1	// SPDX-License-Identifier: Apache-2.0
2	// SPDX-FileCopyrightText: Copyright the Vortex contributors
3
4	use std::sync::LazyLock;
5
6	use arcref::ArcRef;
7	use vortex_dtype::DType;
8	use vortex_error::{VortexError, VortexResult, vortex_bail, vortex_err};
9
10	use crate::compute::{ComputeFn, ComputeFnVTable, InvocationArgs, Kernel, Output};
11	use crate::vtable::VTable;
12	use crate::{Array, ArrayRef};
13
14	static CAST_FN: LazyLock<ComputeFn> = LazyLock::new(\|\| {	2✔
15	let compute = ComputeFn::new("cast".into(), ArcRef::new_ref(&Cast));	2✔
16	for kernel in inventory::iter::<CastKernelRef> {	56✔
17	compute.register_kernel(kernel.0.clone());	54✔
18	}	54✔
19	compute	2✔
20	});	2✔
21
22	/// Attempt to cast an array to a desired DType.
23	///
24	/// Some array support the ability to narrow or upcast.
25	pub fn cast(array: &dyn Array, dtype: &DType) -> VortexResult<ArrayRef> {	4✔
26	CAST_FN	4✔
27	.invoke(&InvocationArgs {	4✔
28	inputs: &[array.into(), dtype.into()],	4✔
29	options: &(),	4✔
30	})?	4✔
31	.unwrap_array()	4✔
32	}	4✔
33
34	struct Cast;
35
36	impl ComputeFnVTable for Cast {
37	fn invoke(	4✔
38	&self,	4✔
39	args: &InvocationArgs,	4✔
40	kernels: &[ArcRef<dyn Kernel>],	4✔
41	) -> VortexResult<Output> {	4✔
42	let CastArgs { array, dtype } = CastArgs::try_from(args)?;	4✔
43
44	if array.dtype() == dtype {	4✔
UNCOV 45	return Ok(array.to_array().into());	×
46	}	4✔
47
48	// TODO(ngates): check for null_count if dtype is non-nullable
49
50	for kernel in kernels {	24✔
51	if let Some(output) = kernel.invoke(args)? {	24✔
52	return Ok(output);	4✔
53	}	20✔
54	}
UNCOV 55	if let Some(output) = array.invoke(&CAST_FN, args)? {	×
56	return Ok(output);	×
UNCOV 57	}	×
58
59	// Otherwise, we fall back to the canonical implementations.
UNCOV 60	log::debug!(	×
61	"Falling back to canonical cast for encoding {} and dtype {} to {}",	×
62	array.encoding_id(),	×
63	array.dtype(),	×
64	dtype
65	);
66
UNCOV 67	if array.is_canonical() {	×
UNCOV 68	vortex_bail!(	×
UNCOV 69	"No compute kernel to cast array {} with dtype {} to {}",	×
UNCOV 70	array.encoding_id(),	×
UNCOV 71	array.dtype(),	×
72	dtype
73	);
UNCOV 74	}	×
75
UNCOV 76	Ok(cast(array.to_canonical()?.as_ref(), dtype)?.into())	×
77	}	4✔
78
79	fn return_dtype(&self, args: &InvocationArgs) -> VortexResult<DType> {	4✔
80	let CastArgs { dtype, .. } = CastArgs::try_from(args)?;	4✔
81	Ok(dtype.clone())	4✔
82	}	4✔
83
84	fn return_len(&self, args: &InvocationArgs) -> VortexResult<usize> {	4✔
85	let CastArgs { array, .. } = CastArgs::try_from(args)?;	4✔
86	Ok(array.len())	4✔
87	}	4✔
88
89	fn is_elementwise(&self) -> bool {	4✔
90	true	4✔
91	}	4✔
92	}
93
94	struct CastArgs<'a> {
95	array: &'a dyn Array,
96	dtype: &'a DType,
97	}
98
99	impl<'a> TryFrom<&InvocationArgs<'a>> for CastArgs<'a> {
100	type Error = VortexError;
101
102	fn try_from(args: &InvocationArgs<'a>) -> Result<Self, Self::Error> {	36✔
103	if args.inputs.len() != 2 {	36✔
104	vortex_bail!(	×
105	"Cast function requires 2 arguments, but got {}",	×
106	args.inputs.len()	×
107	);
108	}	36✔
109	let array = args.inputs[0]	36✔
110	.array()	36✔
111	.ok_or_else(\|\| vortex_err!("Missing array argument"))?;	36✔
112	let dtype = args.inputs[1]	36✔
113	.dtype()	36✔
114	.ok_or_else(\|\| vortex_err!("Missing dtype argument"))?;	36✔
115
116	Ok(CastArgs { array, dtype })	36✔
117	}	36✔
118	}
119
120	pub struct CastKernelRef(ArcRef<dyn Kernel>);
121	inventory::collect!(CastKernelRef);
122
123	pub trait CastKernel: VTable {
124	fn cast(&self, array: &Self::Array, dtype: &DType) -> VortexResult<Option<ArrayRef>>;
125	}
126
127	#[derive(Debug)]
128	pub struct CastKernelAdapter<V: VTable>(pub V);
129
130	impl<V: VTable + CastKernel> CastKernelAdapter<V> {
131	pub const fn lift(&'static self) -> CastKernelRef {	×
132	CastKernelRef(ArcRef::new_ref(self))	×
133	}	×
134	}
135
136	impl<V: VTable + CastKernel> Kernel for CastKernelAdapter<V> {
137	fn invoke(&self, args: &InvocationArgs) -> VortexResult<Option<Output>> {	24✔
138	let CastArgs { array, dtype } = CastArgs::try_from(args)?;	24✔
139	let Some(array) = array.as_opt::<V>() else {	24✔
140	return Ok(None);	20✔
141	};
142
143	Ok(V::cast(&self.0, array, dtype)?.map(\|o\| o.into()))	4✔
144	}	24✔
145	}

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