Struct TpieInput 

struct TpieInput {
    concrete_type: Type,
    trait_path: Path,
    class_system: ClassSystem,
    no_rd: bool,
    internal: bool,
    noexport: bool,
    methods: Vec<TpieMethod>,
}

Input to the __mx_trait_impl_expand! proc macro.

TPIE (Trait-Provided Impl Expansion) allows empty #[miniextendr] impl Trait for Type {} blocks to auto-expand C/R wrappers using metadata embedded in a macro_rules! helper generated at the trait definition site.

Parsed from tokens like:

concrete_type = Point;
trait_path = miniextendr_api::adapter_traits::RDebug;
class_system = env;
method { r_name = debug_str; fn debug_str(&self) -> String; }
method { r_name = debug_str_pretty; fn debug_str_pretty(&self) -> String; }

Fields

concrete_type: Type

The concrete type implementing the trait (e.g., Point).

trait_path: Path

Fully qualified path to the trait (e.g., miniextendr_api::adapter_traits::RDebug).

class_system: ClassSystem

Which R class system to generate wrappers for (env, r6, s3, s4, s7).

no_rd: bool

Whether the impl block has @noRd, suppressing roxygen documentation.

internal: bool

Whether the impl block has #[miniextendr(internal)], adding @keywords internal.

noexport: bool

Whether the impl block has #[miniextendr(noexport)], suppressing @export.

methods: Vec<TpieMethod>

Method signatures and R-facing names from the trait definition.

Trait Implementations

impl Parse for TpieInput

fn parse(input: ParseStream<'_>) -> Result<Self>

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