Trait ReturnHandler

pub trait ReturnHandler: Debug {
    // Required methods
    fn type_system(&self) -> ModelTypeSystem;
    fn rust_ty(&self) -> Type;
    fn return_type_span(&self) -> Span;
    fn is_infallible(&self) -> bool;

    // Provided methods
    fn com_ty(&self) -> Type { ... }
    fn com_to_rust_return(&self, _result: &Ident) -> TokenStream { ... }
    fn rust_to_com_return(&self, _result: &Ident) -> TokenStream { ... }
    fn com_out_args(&self) -> Vec<ComArg> { ... }
}

Defines return handler for handling various different return type schemes.

Required Methods

fn type_system(&self) -> ModelTypeSystem

Returns the current type system. Used internally by the trait.

fn rust_ty(&self) -> Type

The return type of the original Rust method.

fn return_type_span(&self) -> Span

The return type span.

fn is_infallible(&self) -> bool

Infallible status.

Provided Methods

fn com_ty(&self) -> Type

The return type for COM implementation.

fn com_to_rust_return(&self, _result: &Ident) -> TokenStream

Gets the return statement for converting the COM result into Rust return.

fn rust_to_com_return(&self, _result: &Ident) -> TokenStream

Gets the return statement for converting the Rust result into COM outputs.

fn com_out_args(&self) -> Vec<ComArg>

Gets the COM out arguments that result from the Rust return type.

Implementors