Struct regex_syntax::error::Formatter

pub struct Formatter<'e, E: 'e> {
    pattern: &'e str,
    err: &'e E,
    span: &'e Span,
    aux_span: Option<&'e Span>,
}

A helper type for formatting nice error messages.

This type is responsible for reporting regex parse errors in a nice human readable format. Most of its complexity is from interspersing notational markers pointing out the position where an error occurred.

Fields

pattern: &'e str

The original regex pattern in which the error occurred.

err: &'e E

The error kind. It must impl fmt::Display.

span: &'e Span

The primary span of the error.

aux_span: Option<&'e Span>

An auxiliary and optional span, in case the error needs to point to two locations (e.g., when reporting a duplicate capture group name).

Trait Implementations

impl<'e, E: Debug + 'e> Debug for Formatter<'e, E>

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

Formats the value using the given formatter.

impl<'e> From<&'e Error> for Formatter<'e, ErrorKind>

fn from(err: &'e Error) -> Self

Performs the conversion.

impl<'e> From<&'e Error> for Formatter<'e, ErrorKind>

fn from(err: &'e Error) -> Self

Performs the conversion.

impl<'e, E: Display> Display for Formatter<'e, E>

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

Formats the value using the given formatter.