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use crate::prelude::*;
fn any_values_to_primitive<T: PolarsNumericType>(avs: &[AnyValue]) -> ChunkedArray<T> {
avs.iter()
.map(|av| av.extract::<T::Native>())
.collect_trusted()
}
fn any_values_to_utf8(avs: &[AnyValue]) -> Utf8Chunked {
avs.iter()
.map(|av| match av {
AnyValue::Utf8(s) => Some(*s),
AnyValue::Utf8Owned(s) => Some(&**s),
_ => None,
})
.collect_trusted()
}
fn any_values_to_bool(avs: &[AnyValue]) -> BooleanChunked {
avs.iter()
.map(|av| match av {
AnyValue::Boolean(b) => Some(*b),
_ => None,
})
.collect_trusted()
}
fn any_values_to_list(avs: &[AnyValue], inner_type: &DataType) -> ListChunked {
if inner_type == &DataType::Null {
avs.iter()
.map(|av| match av {
AnyValue::List(b) => Some(b.clone()),
_ => None,
})
.collect_trusted()
}
else {
avs.iter()
.map(|av| match av {
AnyValue::List(b) => {
if b.dtype() == inner_type {
Some(b.clone())
} else {
Some(Series::full_null("", b.len(), inner_type))
}
}
_ => None,
})
.collect_trusted()
}
}
impl<'a, T: AsRef<[AnyValue<'a>]>> NamedFrom<T, [AnyValue<'a>]> for Series {
fn new(name: &str, v: T) -> Self {
let av = v.as_ref();
Series::from_any_values(name, av).unwrap()
}
}
impl Series {
pub fn from_any_values_and_dtype<'a>(
name: &str,
av: &[AnyValue<'a>],
dtype: &DataType,
) -> Result<Series> {
let mut s = match dtype {
#[cfg(feature = "dtype-i8")]
DataType::Int8 => any_values_to_primitive::<Int8Type>(av).into_series(),
#[cfg(feature = "dtype-i16")]
DataType::Int16 => any_values_to_primitive::<Int16Type>(av).into_series(),
DataType::Int32 => any_values_to_primitive::<Int32Type>(av).into_series(),
DataType::Int64 => any_values_to_primitive::<Int64Type>(av).into_series(),
#[cfg(feature = "dtype-u8")]
DataType::UInt8 => any_values_to_primitive::<UInt8Type>(av).into_series(),
#[cfg(feature = "dtype-u16")]
DataType::UInt16 => any_values_to_primitive::<UInt16Type>(av).into_series(),
DataType::UInt32 => any_values_to_primitive::<UInt32Type>(av).into_series(),
DataType::UInt64 => any_values_to_primitive::<UInt64Type>(av).into_series(),
DataType::Float32 => any_values_to_primitive::<Float32Type>(av).into_series(),
DataType::Float64 => any_values_to_primitive::<Float64Type>(av).into_series(),
DataType::Utf8 => any_values_to_utf8(av).into_series(),
DataType::Boolean => any_values_to_bool(av).into_series(),
#[cfg(feature = "dtype-date")]
DataType::Date => any_values_to_primitive::<Int32Type>(av)
.into_date()
.into_series(),
#[cfg(feature = "dtype-datetime")]
DataType::Datetime(tu, tz) => any_values_to_primitive::<Int64Type>(av)
.into_datetime(*tu, (*tz).clone())
.into_series(),
#[cfg(feature = "dtype-time")]
DataType::Time => any_values_to_primitive::<Int64Type>(av)
.into_time()
.into_series(),
#[cfg(feature = "dtype-duration")]
DataType::Duration(tu) => any_values_to_primitive::<Int64Type>(av)
.into_duration(*tu)
.into_series(),
DataType::List(inner) => any_values_to_list(av, inner).into_series(),
#[cfg(feature = "dtype-struct")]
DataType::Struct(fields) => {
let mut series_fields = Vec::with_capacity(fields.len());
for (i, field) in fields.iter().enumerate() {
let mut field_avs = Vec::with_capacity(av.len());
for av in av.iter() {
match av {
AnyValue::StructOwned(payload) => {
for (l, r) in fields.iter().zip(payload.1.iter()) {
if l.name() != r.name() {
return Err(PolarsError::ComputeError(
"struct orders must remain the same".into(),
));
}
}
let av_val = payload.0[i].clone();
field_avs.push(av_val)
}
_ => field_avs.push(AnyValue::Null),
}
}
series_fields.push(Series::new(field.name(), &field_avs))
}
return Ok(StructChunked::new(name, &series_fields)
.unwrap()
.into_series());
}
dtype => panic!("dtype {:?} not implemented", dtype),
};
s.rename(name);
Ok(s)
}
pub fn from_any_values<'a>(name: &str, av: &[AnyValue<'a>]) -> Result<Series> {
match av.iter().find(|av| !matches!(av, AnyValue::Null)) {
None => Ok(Series::full_null(name, av.len(), &DataType::Int32)),
Some(av_) => {
let dtype: DataType = av_.into();
Series::from_any_values_and_dtype(name, av, &dtype)
}
}
}
}
impl<'a> From<&AnyValue<'a>> for DataType {
fn from(val: &AnyValue<'a>) -> Self {
use AnyValue::*;
match val {
Null => DataType::Null,
Boolean(_) => DataType::Boolean,
Utf8(_) => DataType::Utf8,
Utf8Owned(_) => DataType::Utf8,
UInt32(_) => DataType::UInt32,
UInt64(_) => DataType::UInt64,
Int32(_) => DataType::Int32,
Int64(_) => DataType::Int64,
Float32(_) => DataType::Float32,
Float64(_) => DataType::Float64,
#[cfg(feature = "dtype-date")]
Date(_) => DataType::Date,
#[cfg(feature = "dtype-datetime")]
Datetime(_, tu, tz) => DataType::Datetime(*tu, (*tz).clone()),
#[cfg(feature = "dtype-time")]
Time(_) => DataType::Time,
List(s) => DataType::List(Box::new(s.dtype().clone())),
#[cfg(feature = "dtype-struct")]
StructOwned(payload) => DataType::Struct(payload.1.to_vec()),
#[cfg(feature = "dtype-struct")]
Struct(_, fields) => DataType::Struct(fields.to_vec()),
#[cfg(feature = "dtype-duration")]
Duration(_, tu) => DataType::Duration(*tu),
UInt8(_) => DataType::UInt8,
UInt16(_) => DataType::UInt16,
Int8(_) => DataType::Int8,
Int16(_) => DataType::Int16,
#[cfg(feature = "dtype-categorical")]
Categorical(_, rev_map) => DataType::Categorical(Some(Arc::new((*rev_map).clone()))),
#[cfg(feature = "object")]
Object(o) => DataType::Object(o.type_name()),
}
}
}
