Struct Error 

pub struct Error<'i> { /* private fields */ }

The default error type for parsing

Implementations

impl<'i> Error<'i>

pub fn new(msg: impl Into<Cow<'i, str>>) -> Self

Create a new error with a given message

pub fn msg(self, msg: impl Into<Cow<'i, str>>) -> Self

Set the message of the error

pub fn label(self, label: impl Into<Cow<'i, str>>) -> Self

Set the label of the error

pub fn span(self, input: Located<'i>) -> Self

Set the span of the error

pub fn from_syn(input: Located<'i>, value: Error) -> Self

Create an error from a syn::Error and a span the span should be the input given to the syn parser

pub fn display_simple(&self) -> String

Create a string to display the error in a simple format this is usefull for error messages inside editors

pub fn into_owned(self) -> Error<'static>

Create an owned version of the error

pub fn backtrack(self) -> ErrMode<Self>

pub fn cut(self) -> ErrMode<Self>

Trait Implementations

impl<'i, I: Stream> AddContext<I, Error<'i>> for Error<'i>

fn add_context( self, _input: &I, _token_start: &<I as Stream>::Checkpoint, context: Self, ) -> Self

Append to an existing error custom data

impl<'i> Clone for Error<'i>

fn clone(&self) -> Error<'i>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'i> Debug for Error<'i>

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

Formats the value using the given formatter.

impl<'i> Diagnostic for Error<'i>

fn related<'a>( &'a self, ) -> Option<Box<dyn Iterator<Item = &'a dyn Diagnostic> + 'a>>

Additional related Diagnostics.

fn labels(&self) -> Option<Box<dyn Iterator<Item = LabeledSpan> + '_>>

Labels to apply to this Diagnostic’s Diagnostic::source_code

fn source_code(&self) -> Option<&dyn SourceCode>

Source code to apply this Diagnostic’s Diagnostic::labels to.

fn code<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

Unique diagnostic code that can be used to look up more information about this Diagnostic. Ideally also globally unique, and documented in the toplevel crate’s documentation for easy searching. Rust path format (foo::bar::baz) is recommended, but more classic codes like E0123 or enums will work just fine.

fn severity(&self) -> Option<Severity>

Diagnostic severity. This may be used by ReportHandlers to change the display format of this diagnostic.

fn help<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

Additional help text related to this Diagnostic. Do you have any advice for the poor soul who’s just run into this issue?

fn url<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

URL to visit for a more detailed explanation/help about this Diagnostic.

fn diagnostic_source(&self) -> Option<&dyn Diagnostic>

The cause of the error.

impl<'i> Display for Error<'i>

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

Formats the value using the given formatter.

impl<'i> Error for Error<'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<'i, I> ParserError<I> for Error<'i>

where I: Stream + AsRef<Located<'i>>,

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

👎Deprecated since 0.6.26: replaced with ParserError::from_input

Deprecated, replaced with ParserError::from_input

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 from_input(input: &I) -> Self

Creates an error from the input position

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

where I: Debug,

Process a parser assertion

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

Combines errors from two different parse branches.