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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| use crate::chunked_array::builder::get_list_builder; | ||
| use crate::prelude::*; | ||
| use std::borrow::Cow; | ||
|
|
||
| pub trait NamedFrom<T, Phantom: ?Sized> { | ||
| /// Initialize by name and values. | ||
| fn new(name: &str, _: T) -> Self; | ||
| } | ||
| // | ||
| macro_rules! impl_named_from { | ||
| ($type:ty, $polars_type:ident, $method:ident) => { | ||
| impl<T: AsRef<$type>> NamedFrom<T, $type> for Series { | ||
| fn new(name: &str, v: T) -> Self { | ||
| ChunkedArray::<$polars_type>::$method(name, v.as_ref()).into_series() | ||
| } | ||
| } | ||
| impl<T: AsRef<$type>> NamedFrom<T, $type> for ChunkedArray<$polars_type> { | ||
| fn new(name: &str, v: T) -> Self { | ||
| ChunkedArray::<$polars_type>::$method(name, v.as_ref()) | ||
| } | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| impl<'a, T: AsRef<[&'a str]>> NamedFrom<T, [&'a str]> for Series { | ||
| fn new(name: &str, v: T) -> Self { | ||
| Utf8Chunked::new_from_slice(name, v.as_ref()).into_series() | ||
| } | ||
| } | ||
| impl<'a, T: AsRef<[Option<&'a str>]>> NamedFrom<T, [Option<&'a str>]> for Series { | ||
| fn new(name: &str, v: T) -> Self { | ||
| Utf8Chunked::new_from_opt_slice(name, v.as_ref()).into_series() | ||
| } | ||
| } | ||
|
|
||
| impl<'a, T: AsRef<[Cow<'a, str>]>> NamedFrom<T, [Cow<'a, str>]> for Series { | ||
| fn new(name: &str, v: T) -> Self { | ||
| Utf8Chunked::new_from_iter(name, v.as_ref().iter().map(|value| value.as_ref())) | ||
| .into_series() | ||
| } | ||
| } | ||
| impl<'a, T: AsRef<[Option<Cow<'a, str>>]>> NamedFrom<T, [Option<Cow<'a, str>>]> for Series { | ||
| fn new(name: &str, v: T) -> Self { | ||
| Utf8Chunked::new_from_opt_iter( | ||
| name, | ||
| v.as_ref() | ||
| .iter() | ||
| .map(|opt| opt.as_ref().map(|value| value.as_ref())), | ||
| ) | ||
| .into_series() | ||
| } | ||
| } | ||
|
|
||
| impl_named_from!([String], Utf8Type, new_from_slice); | ||
| impl_named_from!([bool], BooleanType, new_from_slice); | ||
| #[cfg(feature = "dtype-u8")] | ||
| impl_named_from!([u8], UInt8Type, new_from_slice); | ||
| #[cfg(feature = "dtype-u16")] | ||
| impl_named_from!([u16], UInt16Type, new_from_slice); | ||
| impl_named_from!([u32], UInt32Type, new_from_slice); | ||
| impl_named_from!([u64], UInt64Type, new_from_slice); | ||
| #[cfg(feature = "dtype-i8")] | ||
| impl_named_from!([i8], Int8Type, new_from_slice); | ||
| #[cfg(feature = "dtype-i16")] | ||
| impl_named_from!([i16], Int16Type, new_from_slice); | ||
| impl_named_from!([i32], Int32Type, new_from_slice); | ||
| impl_named_from!([i64], Int64Type, new_from_slice); | ||
| impl_named_from!([f32], Float32Type, new_from_slice); | ||
| impl_named_from!([f64], Float64Type, new_from_slice); | ||
| impl_named_from!([Option<String>], Utf8Type, new_from_opt_slice); | ||
| impl_named_from!([Option<bool>], BooleanType, new_from_opt_slice); | ||
| #[cfg(feature = "dtype-u8")] | ||
| impl_named_from!([Option<u8>], UInt8Type, new_from_opt_slice); | ||
| #[cfg(feature = "dtype-u16")] | ||
| impl_named_from!([Option<u16>], UInt16Type, new_from_opt_slice); | ||
| impl_named_from!([Option<u32>], UInt32Type, new_from_opt_slice); | ||
| impl_named_from!([Option<u64>], UInt64Type, new_from_opt_slice); | ||
| #[cfg(feature = "dtype-i8")] | ||
| impl_named_from!([Option<i8>], Int8Type, new_from_opt_slice); | ||
| #[cfg(feature = "dtype-i16")] | ||
| impl_named_from!([Option<i16>], Int16Type, new_from_opt_slice); | ||
| impl_named_from!([Option<i32>], Int32Type, new_from_opt_slice); | ||
| impl_named_from!([Option<i64>], Int64Type, new_from_opt_slice); | ||
| impl_named_from!([Option<f32>], Float32Type, new_from_opt_slice); | ||
| impl_named_from!([Option<f64>], Float64Type, new_from_opt_slice); | ||
|
|
||
| impl<T: AsRef<[Series]>> NamedFrom<T, ListType> for Series { | ||
| fn new(name: &str, s: T) -> Self { | ||
| let series_slice = s.as_ref(); | ||
| let values_cap = series_slice.iter().fold(0, |acc, s| acc + s.len()); | ||
|
|
||
| let dt = series_slice[0].dtype(); | ||
| let mut builder = get_list_builder(dt, values_cap, series_slice.len(), name); | ||
| for series in series_slice { | ||
| builder.append_series(series) | ||
| } | ||
| builder.finish().into_series() | ||
| } | ||
| } | ||
|
|
||
| impl<T: AsRef<[Option<Series>]>> NamedFrom<T, [Option<Series>]> for Series { | ||
| fn new(name: &str, s: T) -> Self { | ||
| let series_slice = s.as_ref(); | ||
| let values_cap = series_slice.iter().fold(0, |acc, opt_s| { | ||
| acc + opt_s.as_ref().map(|s| s.len()).unwrap_or(0) | ||
| }); | ||
|
|
||
| let dt = series_slice | ||
| .iter() | ||
| .filter_map(|opt| opt.as_ref()) | ||
| .next() | ||
| .expect("cannot create List Series from a slice of nulls") | ||
| .dtype(); | ||
|
|
||
| let mut builder = get_list_builder(dt, values_cap, series_slice.len(), name); | ||
| for series in series_slice { | ||
| builder.append_opt_series(series.as_ref()) | ||
| } | ||
| builder.finish().into_series() | ||
| } | ||
| } |
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