Enum union_impl::handler::Handler

pub enum Handler {
    Map(Expr),
    Then(Expr),
    AndThen(Expr),
}

Variants

Map(Expr)

Then(Expr)

AndThen(Expr)

Methods

impl Handler

pub fn new(input: ParseStream) -> Result<Option<Handler>>

Checks if input ParseStream next value is a Handler and then if it's true, attempts to parse it, otherwise returns None. Will return Err if ParseStream must contain Handler but it can't be parsed.

pub fn is_handler(input: ParseStream) -> bool

Returns true if next value in input ParseStream is the definition of Handler.