[−][src]Enum rustc_expand::mbe::macro_parser::ParseResult

pub(crate) enum ParseResult<T> {
    Success(T),
    Failure(Token, &'static str),
    Error(Span, String),
    ErrorReported,
}

Represents the possible results of an attempted parse.

Variants

Success(T)

Parsed successfully.

Failure(Token, &'static str)

Arm failed to match. If the second parameter is token::Eof, it indicates an unexpected end of macro invocation. Otherwise, it indicates that no rules expected the given token.

Error(Span, String)

Fatal error (malformed macro?). Abort compilation.

ErrorReported

Auto Trait Implementations

impl<T> !RefUnwindSafe for ParseResult<T>

impl<T> !Send for ParseResult<T>

impl<T> !Sync for ParseResult<T>

impl<T> Unpin for ParseResult<T> where
    T: Unpin, 

impl<T> !UnwindSafe for ParseResult<T>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.