Enum winnow::error::TreeError

pub enum TreeError<I, C = StrContext> {
    Base(TreeErrorBase<I>),
    Stack {
        base: Box<Self>,
        stack: Vec<TreeErrorFrame<I, C>>,
    },
    Alt(Vec<Self>),
}

Trace all error paths, particularly for tests

Variants

Base(TreeErrorBase<I>)

Initial error that kicked things off

Stack

Traces added to the error while walking back up the stack

Fields

base: Box<Self>

Initial error that kicked things off

stack: Vec<TreeErrorFrame<I, C>>

Traces added to the error while walking back up the stack

Alt(Vec<Self>)

All failed branches of an alt

Implementations

impl<'i, I: ToOwned, C> TreeError<&'i I, C>

where &'i I: Stream + Clone, <I as ToOwned>::Owned: Clone,

pub fn into_owned(self) -> TreeError<<I as ToOwned>::Owned, C>

Obtaining ownership

impl<I, C> TreeError<I, C>

where I: Stream + Clone,

pub fn map_input<I2: Clone, O: Clone + Fn(I) -> I2>( self, op: O, ) -> TreeError<I2, C>

Translate the input type

Trait Implementations

impl<I, C> AddContext<I, C> for TreeError<I, C>

where I: Stream + Clone,

fn add_context( self, input: &I, token_start: &<I as Stream>::Checkpoint, context: C, ) -> Self

Append to an existing error custom data

impl<I: Debug, C: Debug> Debug for TreeError<I, C>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<I: Stream + Clone + Display, C: Display> Display for TreeError<I, C>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<I: Stream + Clone + Debug + Display + Sync + Send + 'static, C: Display + Debug> Error for TreeError<I, C>

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type based access to context intended for error reports.

impl<I, C, E: Error + Send + Sync + 'static> FromExternalError<I, E> for TreeError<I, C>

where I: Stream + Clone,

fn from_external_error(input: &I, kind: ErrorKind, e: E) -> Self

Like ParserError::from_error_kind but also include an external error.

impl<I, C> ParserError<I> for TreeError<I, C>

where I: Stream + Clone,

fn from_error_kind(input: &I, kind: ErrorKind) -> Self

Creates an error from the input position and an ErrorKind

fn append( self, input: &I, token_start: &<I as Stream>::Checkpoint, kind: ErrorKind, ) -> Self

Like ParserError::from_error_kind but merges it with the existing error.

fn or(self, other: Self) -> Self

Combines errors from two different parse branches.

fn assert(input: &I, _message: &'static str) -> Self

where I: Debug,

Process a parser assertion