use super::{_MutableArrayData, Extend};
use crate::ArrayData;
use arrow_schema::{ArrowError, DataType};
pub(super) fn build_extend(_: &ArrayData) -> Extend<'_> {
Box::new(
move |mutable: &mut _MutableArrayData, index: usize, start: usize, len: usize| {
for (col_idx, child) in mutable.child_data.iter_mut().enumerate() {
child
.try_extend(index, start, start + len)
.map_err(|e| wrap_column_error(e, col_idx, &mutable.data_type))?
}
Ok(())
},
)
}
pub(super) fn extend_nulls(mutable: &mut _MutableArrayData, len: usize) -> Result<(), ArrowError> {
for (col_idx, child) in mutable.child_data.iter_mut().enumerate() {
child
.try_extend_nulls(len)
.map_err(|e| wrap_column_error(e, col_idx, &mutable.data_type))?;
}
Ok(())
}
fn wrap_column_error(e: ArrowError, col_idx: usize, data_type: &DataType) -> ArrowError {
let name_ctx = if let DataType::Struct(fields) = data_type {
fields
.get(col_idx)
.map(|f| format!(" (\"{}\")", f.name()))
.unwrap_or_default()
} else {
String::new()
};
ArrowError::InvalidArgumentError(format!("struct column {col_idx}{name_ctx} failed: {e}"))
}