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implementing category and enum conversions

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This commit is contained in:
Jack Wright 2025-03-11 13:08:15 -07:00
parent 58a56228aa
commit 2f5369c9c4
1 changed files with 18 additions and 12 deletions
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30
crates/nu_plugin_polars/src/dataframe/values/nu_dataframe/conversion.rs
View File

@ -1197,6 +1197,14 @@ fn series_to_values(
})?; })?;
series_to_values(&casted, maybe_from_row, maybe_size, span) series_to_values(&casted, maybe_from_row, maybe_size, span)
} }
DataType::Categorical(maybe_rev_mapping, _categorical_ordering)
| DataType::Enum(maybe_rev_mapping, _categorical_ordering) => {
if let Some(rev_mapping) = maybe_rev_mapping {
Ok(utf8_view_array_to_value(rev_mapping.get_categories()))
} else {
Ok(vec![])
}
}
e => Err(ShellError::GenericError { e => Err(ShellError::GenericError {
error: "Error creating Dataframe".into(), error: "Error creating Dataframe".into(),
msg: "".to_string(), msg: "".to_string(),
@ -1269,7 +1277,7 @@ fn any_value_to_value(any_value: &AnyValue, span: Span) -> Result<Value, ShellEr
AnyValue::BinaryOwned(bytes) => Ok(Value::binary(bytes.to_owned(), span)), AnyValue::BinaryOwned(bytes) => Ok(Value::binary(bytes.to_owned(), span)),
AnyValue::Categorical(_, rev_mapping, utf8_array_pointer) AnyValue::Categorical(_, rev_mapping, utf8_array_pointer)
| AnyValue::Enum(_, rev_mapping, utf8_array_pointer) => { | AnyValue::Enum(_, rev_mapping, utf8_array_pointer) => {
let value = if utf8_array_pointer.is_null() { let value: Vec<Value> = if utf8_array_pointer.is_null() {
utf8_view_array_to_value(rev_mapping.get_categories()) utf8_view_array_to_value(rev_mapping.get_categories())
} else { } else {
// This is no good way around having an unsafe block here // This is no good way around having an unsafe block here
@ -1279,14 +1287,14 @@ fn any_value_to_value(any_value: &AnyValue, span: Span) -> Result<Value, ShellEr
.get() .get()
.as_ref() .as_ref()
.map(utf8_view_array_to_value) .map(utf8_view_array_to_value)
.unwrap_or_else(|| Value::nothing(span)) .unwrap_or_else(Vec::new)
} }
}; };
Ok(value) Ok(Value::list(value, span))
} }
AnyValue::CategoricalOwned(_, rev_mapping, utf8_array_pointer) AnyValue::CategoricalOwned(_, rev_mapping, utf8_array_pointer)
| AnyValue::EnumOwned(_, rev_mapping, utf8_array_pointer) => { | AnyValue::EnumOwned(_, rev_mapping, utf8_array_pointer) => {
let value = if utf8_array_pointer.is_null() { let value: Vec<Value> = if utf8_array_pointer.is_null() {
utf8_view_array_to_value(rev_mapping.get_categories()) utf8_view_array_to_value(rev_mapping.get_categories())
} else { } else {
// This is no good way around having an unsafe block here // This is no good way around having an unsafe block here
@ -1296,15 +1304,15 @@ fn any_value_to_value(any_value: &AnyValue, span: Span) -> Result<Value, ShellEr
.get() .get()
.as_ref() .as_ref()
.map(utf8_view_array_to_value) .map(utf8_view_array_to_value)
.unwrap_or_else(|| Value::nothing(span)) .unwrap_or_else(Vec::new)
} }
}; };
Ok(value) Ok(Value::list(value, span))
} }
e => Err(ShellError::GenericError { e => Err(ShellError::GenericError {
error: "Error creating Value".into(), error: "Error creating Value".into(),
msg: "".to_string(), msg: "".to_string(),
span: None, span: Some(span),
help: Some(format!("Value not supported in nushell: {e}")), help: Some(format!("Value not supported in nushell: {e}")),
inner: Vec::new(), inner: Vec::new(),
}), }),
@ -1390,16 +1398,14 @@ where
} }
} }
fn utf8_view_array_to_value(array: &Utf8ViewArray) -> Value { fn utf8_view_array_to_value(array: &Utf8ViewArray) -> Vec<Value> {
let list: Vec<Value> = array array
.iter() .iter()
.map(|x| match x { .map(|x| match x {
Some(s) => Value::string(s.to_string(), Span::unknown()), Some(s) => Value::string(s.to_string(), Span::unknown()),
None => Value::nothing(Span::unknown()), None => Value::nothing(Span::unknown()),
}) })
.collect(); .collect::<Vec<Value>>()
Value::list(list, Span::unknown())
} }
#[cfg(test)] #[cfg(test)]