Enum TreeError

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

Available on crate feature dep_winnow only.

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<TreeError<I, C>>

Initial error that kicked things off

stack: Vec<TreeErrorFrame<I, C>>

Traces added to the error while walking back up the stack

Alt(Vec<TreeError<I, C>>)

All failed branches of an alt

Implementations

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

where I: ToOwned,

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

Obtaining ownership

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

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

where O: Clone + Fn(I) -> I2,

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, ) -> TreeError<I, C>

Append to an existing error custom data

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

where I: Debug, C: Debug,

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

Formats the value using the given formatter.

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

where I: Display, C: Display,

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

Formats the value using the given formatter.

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

where I: Debug + Display + Sync + Send + 'static, C: Display + Debug,

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

Returns 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> ErrorConvert<TreeError<(I, usize), C>> for TreeError<I, C>

fn convert(self) -> TreeError<(I, usize), C>

Transform to another error type

impl<I, C> ErrorConvert<TreeError<I, C>> for TreeError<(I, usize), C>

fn convert(self) -> TreeError<I, C>

Transform to another error type

impl<I, C, E> FromExternalError<I, E> for TreeError<I, C>

where E: Error + Send + Sync + 'static, I: Clone,

fn from_external_error(input: &I, e: E) -> TreeError<I, C>

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

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

where I: Stream + Clone,

type Inner = TreeError<I, C>

Generally, Self

fn from_input(input: &I) -> TreeError<I, C>

Creates an error from the input position

fn append( self, input: &I, token_start: &<I as Stream>::Checkpoint, ) -> TreeError<I, C>

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

fn or(self, other: TreeError<I, C>) -> TreeError<I, C>

Combines errors from two different parse branches.

fn into_inner( self, ) -> Result<<TreeError<I, C> as ParserError<I>>::Inner, TreeError<I, C>>

Unwrap the mode, returning the underlying error, if present

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

where I: Debug,

Process a parser assertion

fn incomplete(input: &I, _needed: Needed) -> Self

There was not enough data to determine the appropriate action

fn is_backtrack(&self) -> bool

Is backtracking and trying new parse branches allowed?

fn is_incomplete(&self) -> bool

Is more data Needed

fn needed(&self) -> Option<Needed>

Extract the Needed data, if present