[−][src]Trait combine::ParseError

pub trait ParseError<Item, Range, Position>: Sized + PartialEq {
    type StreamError: StreamError<Item, Range>;
    pub fn empty(position: Position) -> Self;

    pub fn set_position(&mut self, position: Position);

    pub fn add(&mut self, err: Self::StreamError);

    pub fn set_expected<F>(
        self_: &mut Tracked<Self>, 
        info: Self::StreamError, 
        f: F
    )
    where
        F: FnOnce(&mut Tracked<Self>);

    pub fn is_unexpected_end_of_input(&self) -> bool;

    pub fn into_other<T>(self) -> T
    where
        T: ParseError<Item, Range, Position>;

    pub fn from_error(position: Position, err: Self::StreamError) -> Self { ... }

    pub fn position(&self) -> Position { ... }

    pub fn merge(self, other: Self) -> Self { ... }

    pub fn add_expected<E>(&mut self, info: E)
    where
        E: for<'s> ErrorInfo<'s, Item, Range>,
    { ... }

    pub fn add_unexpected<E>(&mut self, info: E)
    where
        E: for<'s> ErrorInfo<'s, Item, Range>,
    { ... }

    pub fn add_message<E>(&mut self, info: E)
    where
        E: for<'s> ErrorInfo<'s, Item, Range>,
    { ... }

    pub fn clear_expected(&mut self) { ... }
}

Trait which defines a combine parse error.

A parse error is composed of zero or more StreamError instances which gets added to it as errors are encountered during parsing.

Associated Types

type StreamError: StreamError<Item, Range>[src]

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Required methods

pub fn empty(position: Position) -> Self[src]

Constructs an empty error.

An empty error is expected to be cheap to create as it is frequently created and discarded.

pub fn set_position(&mut self, position: Position)[src]

Sets the position of this ParseError

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

Adds a StreamError to self.

It is up to each individual error type to define what adding an error does, some may push it to a vector while others may only keep self or err to avoid allocation

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

Sets info as the only Expected error of self

pub fn is_unexpected_end_of_input(&self) -> bool[src]

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

Does a best-effort conversion of self into another ParseError

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Provided methods

pub fn from_error(position: Position, err: Self::StreamError) -> Self[src]

Creates a ParseError from a single Self::StreamError

pub fn position(&self) -> Position[src]

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

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.

pub fn add_expected<E>(&mut self, info: E) where
    E: for<'s> ErrorInfo<'s, Item, Range>, [src]

pub fn add_unexpected<E>(&mut self, info: E) where
    E: for<'s> ErrorInfo<'s, Item, Range>, [src]

pub fn add_message<E>(&mut self, info: E) where
    E: for<'s> ErrorInfo<'s, Item, Range>, [src]

pub fn clear_expected(&mut self)[src]

Removes any expected errors currently in self

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Implementors

impl<Item, Range, Position> ParseError<Item, Range, Position> for StringStreamError where
    Position: Default, [src]

type StreamError = Self

impl<Item, Range, Position> ParseError<Item, Range, Position> for UnexpectedParse where
    Position: Default, [src]

type StreamError = Self

impl<Item, Range, Position> ParseError<Item, Range, Position> for combine::stream::easy::Error<Item, Range> where
    Item: PartialEq,
    Range: PartialEq,
    Position: Default, [src]

This is supported on crate feature std only.

type StreamError = Self

impl<Item, Range, Position> ParseError<Item, Range, Position> for combine::stream::read::Error where
    Position: Default, [src]

This is supported on crate feature std only.

type StreamError = Self

impl<Item, Range, Position> ParseError<Item, Range, Position> for Errors<Item, Range, Position> where
    Item: PartialEq,
    Range: PartialEq,
    Position: Ord + Clone, [src]

This is supported on crate feature std only.

type StreamError = Error<Item, Range>

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