Struct arithmetic_parser::Error

pub struct Error { /* private fields */ }

Parsing error with a generic code span.

Two primary cases of the Span type param are &str (for original errors produced by the parser) and usize (for stripped errors that have a static lifetime).

Implementations

impl Error

pub fn kind(&self) -> &ErrorKind

Returns the kind of this error.

pub fn location(&self) -> Location

Returns the span of this error.

Trait Implementations

impl<'a> ContextError<LocatedSpan<&'a str, ()>> for Error

fn add_context(input: InputSpan<'a>, ctx: &'static str, target: 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 Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<'a> FromExternalError<LocatedSpan<&'a str, ()>, ErrorKind> for Error

fn from_external_error( input: InputSpan<'a>, _: NomErrorKind, err: ErrorKind ) -> Self

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

impl<'a> ParseError<LocatedSpan<&'a str, ()>> for Error

fn from_error_kind(input: InputSpan<'a>, kind: NomErrorKind) -> Self

Creates an error from the input position and an ErrorKind

fn append(_: InputSpan<'a>, _: NomErrorKind, 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, _: 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.