Enum ErrorTree 

pub enum ErrorTree<I> {
    Base {
        location: I,
        kind: BaseErrorKind,
    },
    Stack {
        base: Box<ErrorTree<I>>,
        contexts: Vec<(I, StackContext)>,
    },
    Alt(Vec<ErrorTree<I>>),
}

Custom error tree type compatible with nom 8.0 This provides similar functionality to nom-supreme’s ErrorTree

Variants

Base

A base error - a leaf node in the error tree

Fields

location: I

The location in the input where the error occurred

kind: BaseErrorKind

The kind of error that occurred

Stack

A stack of errors with context

Fields

base: Box<ErrorTree<I>>

The base error

contexts: Vec<(I, StackContext)>

The context stack

Alt(Vec<ErrorTree<I>>)

A collection of alternative errors from alt

Implementations

impl<I> ErrorTree<I>

pub fn map_locations<O>(self, f: impl Fn(I) -> O + Copy) -> ErrorTree<O>

Map the locations in this error tree

Trait Implementations

impl<I: Clone> Clone for ErrorTree<I>

fn clone(&self) -> ErrorTree<I>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<I: Clone> ContextError<I> for ErrorTree<I>

fn add_context(input: I, ctx: &'static str, other: Self) -> Self

Creates a new error from an input position, a static string and an existing error. This is used mainly in the context combinator, to add user friendly information to errors when backtracking through a parse tree

impl<I: Debug> Debug for ErrorTree<I>

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

Formats the value using the given formatter.

impl<I: Display> Display for ErrorTree<I>

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

Formats the value using the given formatter.

impl<I: Debug + Display> Error for ErrorTree<I>

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 From<ErrorTree<&str>> for NixUriError

fn from(value: IErr<&str>) -> Self

Converts to this type from the input type.

impl From<ErrorTree<String>> for NixUriError

fn from(source: IErr<String>) -> Self

Converts to this type from the input type.

impl<I: Clone, E: Display> FromExternalError<I, E> for ErrorTree<I>

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

Creates a new error from an input position, an ErrorKind indicating the wrapping parser, and an external error

impl<I: Clone> ParseError<I> for ErrorTree<I>

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

Creates an error from the input position and an ErrorKind

fn append(input: I, kind: ErrorKind, other: Self) -> Self

Combines an existing error with a new one created from the input position and an ErrorKind. This is useful when backtracking through a parse tree, accumulating error context on the way

fn from_char(input: I, c: char) -> Self

Creates an error from an input position and an expected character

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

Combines two existing errors. This function is used to compare errors generated in various branches of alt.

impl<I: PartialEq> PartialEq for ErrorTree<I>

fn eq(&self, other: &ErrorTree<I>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<I> StructuralPartialEq for ErrorTree<I>