Module dataframe_derive 

Derive macros for bidirectional row ↔ dataframe conversions.

Supports both structs (direct field mapping) and enums (field-name union across variants with Option<T> fill for missing fields).

Modules

enum_expansion 🔒

Enum-specific DataFrame derive expansion.

Structs

AutoExpandVecData 🔒

Data for ResolvedField::AutoExpandVec.

ColumnRegistry 🔒

Accumulates unique columns for an enum-to-dataframe unified schema.

DataFrameAttrs 🔒

Parsed container-level #[dataframe(...)] attributes.

EnumAutoExpandVecData 🔒

Data for EnumResolvedField::AutoExpandVec.

EnumExpandedFixedData 🔒

Data for EnumResolvedField::ExpandedFixed.

EnumExpandedVecData 🔒

Data for EnumResolvedField::ExpandedVec.

EnumMapFieldData 🔒

Data for EnumResolvedField::Map.

EnumSingleFieldData 🔒

Data for EnumResolvedField::Single.

EnumStructFieldData 🔒

Data for EnumResolvedField::Struct.

ExpandedFixedData 🔒

Data for ResolvedField::ExpandedFixed.

ExpandedVecData 🔒

Data for ResolvedField::ExpandedVec.

FieldAttrs 🔒

Parsed field-level #[dataframe(...)] attributes.

ResolvedColumn 🔒

A resolved column in the unified schema across all enum variants.

SingleFieldData 🔒

Data for ResolvedField::Single.

StructFieldData 🔒

Data for ResolvedField::Struct.

VariantInfo 🔒

Parsed and resolved information about a single enum variant for DataFrame codegen.

Enums

EnumResolvedField 🔒

A resolved enum field ready for codegen – either a single column or expanded from an array/Vec into multiple suffixed columns.

FieldTypeKind 🔒

Classification of a field type for DataFrame column expansion.

ResolvedField 🔒

A resolved struct field ready for codegen – determines how this field maps to DataFrame companion struct columns.

VariantShape 🔒

Describes the shape of an enum variant’s fields.

Functions

classify_field_type 🔒

Classify a field type for DataFrame column expansion.

derive_dataframe_row

Derive DataFrameRow: generates a companion DataFrame type with collection fields.

derive_struct_dataframe 🔒

Generate DataFrameRow expansion for struct types.

parse_dataframe_attrs 🔒

Parse container-level #[dataframe(...)] attributes from the derive input.

parse_field_attrs 🔒

Parse field-level #[dataframe(...)] attributes from a syn::Field.

resolve_struct_field 🔒

Resolve a struct field into a ResolvedField, applying field attributes.