polars_core/chunked_array/builder/
primitive.rs

1use super::*;
2
3#[derive(Clone)]
4pub struct PrimitiveChunkedBuilder<T>
5where
6    T: PolarsNumericType,
7{
8    array_builder: MutablePrimitiveArray<T::Native>,
9    pub(crate) field: Field,
10}
11
12impl<T> ChunkedBuilder<T::Native, T> for PrimitiveChunkedBuilder<T>
13where
14    T: PolarsNumericType,
15{
16    /// Appends a value of type `T` into the builder
17    #[inline]
18    fn append_value(&mut self, v: T::Native) {
19        self.array_builder.push(Some(v))
20    }
21
22    /// Appends a null slot into the builder
23    #[inline]
24    fn append_null(&mut self) {
25        self.array_builder.push(None)
26    }
27
28    fn finish(mut self) -> ChunkedArray<T> {
29        let arr = self.array_builder.as_box();
30        ChunkedArray::new_with_compute_len(Arc::new(self.field), vec![arr])
31    }
32
33    fn shrink_to_fit(&mut self) {
34        self.array_builder.shrink_to_fit()
35    }
36}
37
38impl<T> PrimitiveChunkedBuilder<T>
39where
40    T: PolarsNumericType,
41{
42    pub fn new(name: PlSmallStr, capacity: usize) -> Self {
43        let array_builder = MutablePrimitiveArray::<T::Native>::with_capacity(capacity)
44            .to(T::get_dtype().to_arrow(CompatLevel::newest()));
45
46        PrimitiveChunkedBuilder {
47            array_builder,
48            field: Field::new(name, T::get_dtype()),
49        }
50    }
51}
polars_core/chunked_array/builder/primitive.rs

polars_core/chunked_array/builder/
primitive.rs
