Enum combine::easy::Error

[−] Show declaration

pub enum Error<T, R> {
    Unexpected(Info<T, R>),
    Expected(Info<T, R>),
    Message(Info<T, R>),
    Other(Box<dyn StdError + Send + Sync>),
}

[−] Expand description

Enum used to store information about an error that has occurred during parsing.

Variants

Unexpected(Info<T, R>)

[−] Expand description

Error indicating an unexpected token has been encountered in the stream

Expected(Info<T, R>)

[−] Expand description

Error indicating that the parser expected something else

Message(Info<T, R>)

[−] Expand description

Generic message

Other(Box<dyn StdError + Send + Sync>)

[−] Expand description

Variant for containing other types of errors

Implementations

impl<T, R> Error<T, R>[−]

pub fn map_token<F, U>(self, f: F) -> Error<U, R> where
    F: FnOnce(T) -> U, 

pub fn map_range<F, S>(self, f: F) -> Error<T, S> where
    F: FnOnce(R) -> S, 

impl<T, R> Error<T, R>[−]

pub fn end_of_input() -> Error<T, R>[−]

Returns the end_of_input error.

pub fn fmt_errors(errors: &[Error<T, R>], f: &mut Formatter<'_>) -> Result where
    T: Display,
    R: Display, [−]

Formats a slice of errors in a human readable way.

let input = r"
  ,123
";
let result = spaces().silent().with(char('.').or(char('a')).or(digit()))
    .easy_parse(State::new(input));
let m = format!("{}", result.unwrap_err());
let expected = r"Parse error at line: 2, column: 3
Unexpected `,`
Expected `.`, `a` or `digit`
";
assert_eq!(m, expected);

Trait Implementations

impl<T: Debug, R: Debug> Debug for Error<T, R>[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl<T: Display, R: Display> Display for Error<T, R>[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl<T, R, E> From<E> for Error<T, R> where
    E: StdError + 'static + Send + Sync, [+]

[+] Show hidden undocumented items

fn from(e: E) -> Error<T, R>[−]

Performs the conversion.

impl<Item, Range, Position> ParseError<Item, Range, Position> for Error<Item, Range> where
    Item: PartialEq,
    Range: PartialEq,
    Position: Default, [+]

[+] Show hidden undocumented items

type StreamError = Self

fn empty(_: Position) -> Self[−]

Constructs an empty error.

fn from_error(_: Position, err: Self::StreamError) -> Self[−]

Creates a ParseError from a single Self::StreamError

fn set_position(&mut self, _position: Position)[−]

Sets the position of this ParseError

fn add(&mut self, err: Self::StreamError)[−]

Adds a StreamError to self.

fn set_expected<F>(self_: &mut Tracked<Self>, info: Self::StreamError, f: F) where
    F: FnOnce(&mut Tracked<Self>), [−]

Sets info as the only Expected error of self

fn is_unexpected_end_of_input(&self) -> bool

fn into_other<T>(self) -> T where
    T: ParseError<Item, Range, Position>, [−]

Does a best-effort conversion of self into another ParseError

fn merge(self, other: Self) -> Self[−]

Merges two errors. If they exist at the same position the errors of other are added to self (using the semantics of add). If they are not at the same position the error furthest ahead are returned, ignoring the other ParseError.

fn add_expected(&mut self, info: Info<Item, Range>)

fn add_unexpected(&mut self, info: Info<Item, Range>)

fn add_message(&mut self, info: Info<Item, Range>)

fn clear_expected(&mut self)[−]

Removes any expected errors currently in self

impl<T: PartialEq, R: PartialEq> PartialEq<Error<T, R>> for Error<T, R>[+]

[+] Show hidden undocumented items

fn eq(&self, other: &Error<T, R>) -> bool[−]

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

[+] Expand attributes

#[must_use]pub fn ne(&self, other: &Rhs) -> bool[−]

This method tests for !=.

impl<Item, Range> StreamError<Item, Range> for Error<Item, Range> where
    Item: PartialEq,
    Range: PartialEq, [+]

[+] Show hidden undocumented items

fn unexpected_token(token: Item) -> Self

fn unexpected_range(token: Range) -> Self

fn unexpected_message<T>(msg: T) -> Self where
    T: Display, 

fn unexpected_static_message(msg: &'static str) -> Self

fn expected_token(token: Item) -> Self

fn expected_range(token: Range) -> Self

fn expected_message<T>(msg: T) -> Self where
    T: Display, 

fn expected_static_message(msg: &'static str) -> Self

fn message_message<T>(msg: T) -> Self where
    T: Display, 

fn message_static_message(msg: &'static str) -> Self

fn message_token(token: Item) -> Self

fn message_range(token: Range) -> Self

fn other<E>(err: E) -> Self where
    E: StdError + Send + Sync + 'static, 

fn into_other<T>(self) -> T where
    T: StreamError<Item, Range>, [−]

Converts self into a different StreamError type.

fn unexpected(info: Info<Item, Range>) -> Self

fn expected(info: Info<Item, Range>) -> Self

fn message(info: Info<Item, Range>) -> Self

fn end_of_input() -> Self