polars_core/series/arithmetic/
owned.rs

1use super::*;
2#[cfg(feature = "performant")]
3use crate::utils::align_chunks_binary_owned_series;
4
5#[cfg(feature = "performant")]
6pub fn coerce_lhs_rhs_owned(lhs: Series, rhs: Series) -> PolarsResult<(Series, Series)> {
7    let dtype = try_get_supertype(lhs.dtype(), rhs.dtype())?;
8    let left = if lhs.dtype() == &dtype {
9        lhs
10    } else {
11        lhs.cast(&dtype)?
12    };
13    let right = if rhs.dtype() == &dtype {
14        rhs
15    } else {
16        rhs.cast(&dtype)?
17    };
18    Ok((left, right))
19}
20
21fn is_eligible(lhs: &DataType, rhs: &DataType) -> bool {
22    !lhs.is_logical()
23        && lhs.to_physical().is_primitive_numeric()
24        && rhs.to_physical().is_primitive_numeric()
25}
26
27#[cfg(feature = "performant")]
28fn apply_operation_mut<T, F>(mut lhs: Series, mut rhs: Series, op: F) -> Series
29where
30    T: PolarsNumericType,
31    F: Fn(ChunkedArray<T>, ChunkedArray<T>) -> ChunkedArray<T> + Copy,
32    ChunkedArray<T>: IntoSeries,
33{
34    let lhs_ca: &mut ChunkedArray<T> = lhs._get_inner_mut().as_mut();
35    let rhs_ca: &mut ChunkedArray<T> = rhs._get_inner_mut().as_mut();
36
37    let lhs = std::mem::take(lhs_ca);
38    let rhs = std::mem::take(rhs_ca);
39
40    op(lhs, rhs).into_series()
41}
42
43macro_rules! impl_operation {
44    ($operation:ident, $method:ident, $function:expr) => {
45        impl $operation for Series {
46            type Output = PolarsResult<Series>;
47
48            fn $method(self, rhs: Self) -> Self::Output {
49                #[cfg(feature = "performant")]
50                {
51                    // only physical numeric values take the mutable path
52                    if is_eligible(self.dtype(), rhs.dtype()) {
53                        let (lhs, rhs) = coerce_lhs_rhs_owned(self, rhs).unwrap();
54                        let (lhs, rhs) = align_chunks_binary_owned_series(lhs, rhs);
55                        use DataType::*;
56                        Ok(match lhs.dtype() {
57                            #[cfg(feature = "dtype-i8")]
58                            Int8 => apply_operation_mut::<Int8Type, _>(lhs, rhs, $function),
59                            #[cfg(feature = "dtype-i16")]
60                            Int16 => apply_operation_mut::<Int16Type, _>(lhs, rhs, $function),
61                            Int32 => apply_operation_mut::<Int32Type, _>(lhs, rhs, $function),
62                            Int64 => apply_operation_mut::<Int64Type, _>(lhs, rhs, $function),
63                            #[cfg(feature = "dtype-u8")]
64                            UInt8 => apply_operation_mut::<UInt8Type, _>(lhs, rhs, $function),
65                            #[cfg(feature = "dtype-u16")]
66                            UInt16 => apply_operation_mut::<UInt16Type, _>(lhs, rhs, $function),
67                            UInt32 => apply_operation_mut::<UInt32Type, _>(lhs, rhs, $function),
68                            UInt64 => apply_operation_mut::<UInt64Type, _>(lhs, rhs, $function),
69                            Float32 => apply_operation_mut::<Float32Type, _>(lhs, rhs, $function),
70                            Float64 => apply_operation_mut::<Float64Type, _>(lhs, rhs, $function),
71                            _ => unreachable!(),
72                        })
73                    } else {
74                        (&self).$method(&rhs)
75                    }
76                }
77                #[cfg(not(feature = "performant"))]
78                {
79                    (&self).$method(&rhs)
80                }
81            }
82        }
83    };
84}
85
86impl_operation!(Add, add, |a, b| a.add(b));
87impl_operation!(Sub, sub, |a, b| a.sub(b));
88impl_operation!(Mul, mul, |a, b| a.mul(b));
89impl_operation!(Div, div, |a, b| a.div(b));
90
91impl Series {
92    pub fn try_add_owned(self, other: Self) -> PolarsResult<Self> {
93        if is_eligible(self.dtype(), other.dtype()) {
94            self + other
95        } else {
96            std::ops::Add::add(&self, &other)
97        }
98    }
99
100    pub fn try_sub_owned(self, other: Self) -> PolarsResult<Self> {
101        if is_eligible(self.dtype(), other.dtype()) {
102            self - other
103        } else {
104            std::ops::Sub::sub(&self, &other)
105        }
106    }
107
108    pub fn try_mul_owned(self, other: Self) -> PolarsResult<Self> {
109        if is_eligible(self.dtype(), other.dtype()) {
110            self * other
111        } else {
112            std::ops::Mul::mul(&self, &other)
113        }
114    }
115}
polars_core/series/arithmetic/owned.rs

polars_core/series/arithmetic/
owned.rs
