Struct GeneratorToken 

pub struct GeneratorToken<Y, A = ()>(/* private fields */);

A generator token ties together the executor and the generator itself.

It is what allows us to yield values back out of the generator.

Implementations

impl<Y, A> GeneratorToken<Y, A>

pub async fn yield_(&self, value: Y) -> A

Yield a value from this generator, returning control back to the caller.

Panics

Panics if evaluated in the context of a generator other than the one this token was created for.

pub async fn argument(&self) -> A

Get the current argument without yielding.

Normally yield_ will yield a value and then read in the next argument. However, the very first argument passed in to the generator happens before the first call to yield_. This method is used to read that initial argument passed into the generator.

Panics

• Panics if evaluated in the context of a generator other than the one this token was created for.
• Panics if there is no argument saved in the generator context. (e.g. yield has already been called or argument was called multiple times)