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.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors