Struct EnumStructFieldData 

pub(crate) struct EnumStructFieldData {
    pub(crate) base_name: String,
    pub(crate) binding: Ident,
    pub(crate) rust_name: Ident,
    pub(crate) inner_ty: Type,
}

Data for EnumResolvedField::Struct.

A field whose inner type implements DataFrameRow expands to <base_name>_<inner_col> prefixed columns — one output column per column emitted by the inner type’s companion DataFrame. Absent-variant rows produce None in every prefixed column.

The companion struct holds Vec<Option<Inner>> (not Vec<Inner>). The into_data_frame method collects present rows into a dense Vec<Inner> (tracking presence indices), calls Inner::to_dataframe(present_rows), extracts named column SEXPs, and scatters them back to the full row count with None-fill for absent rows.

Fields

base_name: String

Base name for column prefixing (field name or rename override).

binding: Ident

Binding name used in destructure pattern.

rust_name: Ident

Original Rust field name.

inner_ty: Type

Inner struct type (used for the compile-time DataFrameRow assertion and codegen).

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 408 bytes