Type Alias Result

pub type Result<T = TokenStream, E = Error> = Result<T, E>;

An alias for Result suited for use with this crate

Aliased Type

pub enum Result<T = TokenStream, E = Error> {
    Ok(T),
    Err(E),
}

Variants

Ok(T)

Contains the success value

Err(E)

Contains the error value

Trait Implementations

impl<T: MacroOutput, E: ToTokensError + 'static> MacroOutput for Result<T, E>

fn convert(self) -> Result<TokenStream, Error>

Handles conversion into a Result<TokenStream, Error>.

impl<T, E: ToTokensError + 'static> ResultExt<T, E> for Result<T, E>

fn context_with<C: ToTokensError + 'static>( self, error: impl FnOnce() -> C, ) -> Result<T, Error>

If self is error, attaches another error, closure is only executed if the Result is Err

fn attachment(self, label: &'static str, msg: impl Display) -> Result<T, E>

where E: Attachment,

If self is error, extend error message

fn context(self, error: impl ToTokensError + 'static) -> Result<T, Error>

If self is error, attaches another error

fn error(self, msg: impl Display) -> Self

where E: Attachment,

Attaches a new error message to self reusing the same span

fn warning(self, msg: impl Display) -> Self

where E: Attachment,

Attaches a new warning message to self reusing the same span

fn note(self, msg: impl Display) -> Self

where E: Attachment,

Attaches a new note message to self reusing the same span

fn help(self, msg: impl Display) -> Self

where E: Attachment,

Attaches a new help message to self reusing the same span