Struct prqlc_parser::err::parse_error::ChumError

pub struct ChumError<T: Hash + Eq> { /* private fields */ }

Implementations

impl<T: Hash + Eq> ChumError<T>

pub fn custom<M: ToString>(span: Span, msg: M) -> Self

Create an error with a custom error message.

pub fn span(&self) -> Span

Returns the span that the error occurred at.

pub fn expected(&self) -> impl ExactSizeIterator<Item = &Option<T>> + '_

Returns an iterator over possible expected patterns.

pub fn found(&self) -> Option<&T>

Returns the input, if any, that was found instead of an expected pattern.

pub fn reason(&self) -> &Option<String>

Returns the reason for the error.

pub fn label(&self) -> Option<&'static str>

Returns the error’s label, if any.

pub fn map<U: Hash + Eq, F: FnMut(T) -> U>(self, f: F) -> ChumError<U>

Map the error’s inputs using the given function.

This can be used to unify the errors between parsing stages that operate upon two forms of input (for example, the initial lexing stage and the parsing stage in most compilers).

Trait Implementations

impl<T: Clone + Hash + Eq> Clone for ChumError<T>

fn clone(&self) -> ChumError<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug + Hash + Eq> Debug for ChumError<T>

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

Formats the value using the given formatter.

impl<T: Display + Hash + Eq> Display for ChumError<T>

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

Formats the value using the given formatter.

impl<T: Hash + Eq + Display + Debug> Error<T> for ChumError<T>

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

from chumsky::error::Simple

type Span = Span

The type of spans to be used in the error.

type Label = &'static str

The label used to describe a syntactic structure currently being parsed.

fn expected_input_found<Iter: IntoIterator<Item = Option<T>>>( span: Span, expected: Iter, found: Option<T>, ) -> Self

Create a new error describing a conflict between expected inputs and that which was actually found.

fn unclosed_delimiter( unclosed_span: Self::Span, delimiter: T, span: Self::Span, expected: T, found: Option<T>, ) -> Self

Create a new error describing a delimiter that was not correctly closed.

fn with_label(self, label: Self::Label) -> Self

Indicate that the error occurred while parsing a particular syntactic structure.

impl From<ChumError<TokenKind>> for Error

fn from(p: PError) -> Error

Converts to this type from the input type.

impl<T: Hash + Eq> PartialEq for ChumError<T>

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<T: Hash + Eq> Eq for ChumError<T>