Trait Pass 

pub trait Pass: Transformer {
    type Argument: Parse;

    // Required method
    fn through(
        &mut self,
        input: TokenStream,
        argument: Self::Argument,
    ) -> Result<TokenStream>;
}

A trait that represents a singular pass over an input token stream.

This is a stronger-typed alternative to the Transformer trait, which is obligated to be dyn-safe.

Blanket Implementation

A blanket implementation for Transformer for all implementors of Pass is automatically performed.

It is advisable to use generic bounds of this type in respect to Transformer.

Required Associated Types

type Argument: Parse

The argument type used by this pass.

If no argument is required, it is advisable to use the Nothing type.

Required Methods

fn through( &mut self, input: TokenStream, argument: Self::Argument, ) -> Result<TokenStream>

Pass-through an input [token stream] with an appropiate source-parsable argument.

Implementors

impl Pass for Identity

type Argument = Nothing