ParseState

Struct ParseState 

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pub struct ParseState<'i> { /* private fields */ }
Expand description

Per-parse shared state.

Tracks the furthest encountered error, allowing combinators like Parser::optional to return Ok while still reporting the furthest seen error for better user-facing error messages.

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impl<'i> ParseState<'i>

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pub fn error(&mut self, error: ParseError, remaining: &'i [u8]) -> ErrToken

Record an error.

The error will be discarded if a further error is already stored.

Returns an ErrToken which can be used to return Err from Parser::parse_ctx.

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pub fn into_input_error(self, input: &str) -> InputError

Build an InputError from the furthest error seen.

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impl<'i> Default for ParseState<'i>

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fn default() -> ParseState<'i>

Returns the “default value” for a type. Read more

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impl<'i> Freeze for ParseState<'i>

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impl<'i> RefUnwindSafe for ParseState<'i>

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impl<'i> Send for ParseState<'i>

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impl<'i> Sync for ParseState<'i>

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impl<'i> Unpin for ParseState<'i>

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impl<'i> UnwindSafe for ParseState<'i>

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.