Trait combine::StreamOnce
source · [−]pub trait StreamOnce {
type Token: Clone;
type Range: Clone;
type Position: Clone + Ord;
type Error: ParseError<Self::Token, Self::Range, Self::Position>;
fn uncons(&mut self) -> Result<Self::Token, StreamErrorFor<Self>>;
fn is_partial(&self) -> bool { ... }
}
Expand description
StreamOnce
represents a sequence of items that can be extracted one by one.
Required Associated Types
The type of a range of items yielded from this stream.
Types which do not a have a way of yielding ranges of items should just use the
Self::Token
for this type.
Type which represents the position in a stream.
Ord
is required to allow parsers to determine which of two positions are further ahead.
Required Methods
fn uncons(&mut self) -> Result<Self::Token, StreamErrorFor<Self>>
fn uncons(&mut self) -> Result<Self::Token, StreamErrorFor<Self>>
Takes a stream and removes its first token, yielding the token and the rest of the elements.
Returns Err
if no element could be retrieved.
Provided Methods
fn is_partial(&self) -> bool
fn is_partial(&self) -> bool
Returns true
if this stream only contains partial input.
See PartialStream
.
Implementations on Foreign Types
sourceimpl<'a, I> StreamOnce for &'a mut I where
I: StreamOnce + ?Sized,
impl<'a, I> StreamOnce for &'a mut I where
I: StreamOnce + ?Sized,
type Token = <I as StreamOnce>::Token
type Range = <I as StreamOnce>::Range
type Position = <I as StreamOnce>::Position
type Error = <I as StreamOnce>::Error
fn uncons(&mut self) -> Result<Self::Token, StreamErrorFor<Self>>
fn is_partial(&self) -> bool
sourceimpl<'a> StreamOnce for &'a str
impl<'a> StreamOnce for &'a str
type Token = char
type Range = &'a str
type Position = PointerOffset<str>
type Error = StringStreamError
fn uncons(&mut self) -> Result<char, StreamErrorFor<Self>>
sourceimpl<'a, T> StreamOnce for &'a [T] where
T: Clone + PartialEq,
impl<'a, T> StreamOnce for &'a [T] where
T: Clone + PartialEq,
type Token = T
type Range = &'a [T]
type Position = PointerOffset<[T]>
type Error = UnexpectedParse
fn uncons(&mut self) -> Result<T, StreamErrorFor<Self>>
Implementors
sourceimpl<'a, T> StreamOnce for SliceStream<'a, T> where
T: PartialEq + 'a,
impl<'a, T> StreamOnce for SliceStream<'a, T> where
T: PartialEq + 'a,
type Token = &'a T
type Range = &'a [T]
type Position = PointerOffset<[T]>
type Error = UnexpectedParse
sourceimpl<Input> StreamOnce for combine::stream::buffered::Stream<Input> where
Input: StreamOnce + Positioned,
Input::Token: Clone,
Available on crate feature alloc
only.
impl<Input> StreamOnce for combine::stream::buffered::Stream<Input> where
Input: StreamOnce + Positioned,
Input::Token: Clone,
Available on crate feature
alloc
only.type Token = <Input as StreamOnce>::Token
type Range = <Input as StreamOnce>::Range
type Position = <Input as StreamOnce>::Position
type Error = <Input as StreamOnce>::Error
sourceimpl<Input, X, S> StreamOnce for combine::stream::position::Stream<Input, X> where
Input: StreamOnce,
X: Positioner<Input::Token>,
S: StreamError<Input::Token, Input::Range>,
Input::Error: ParseError<Input::Token, Input::Range, X::Position, StreamError = S> + ParseError<Input::Token, Input::Range, Input::Position, StreamError = S>,
impl<Input, X, S> StreamOnce for combine::stream::position::Stream<Input, X> where
Input: StreamOnce,
X: Positioner<Input::Token>,
S: StreamError<Input::Token, Input::Range>,
Input::Error: ParseError<Input::Token, Input::Range, X::Position, StreamError = S> + ParseError<Input::Token, Input::Range, Input::Position, StreamError = S>,
type Token = <Input as StreamOnce>::Token
type Range = <Input as StreamOnce>::Range
type Position = <X as Positioner<<Input as StreamOnce>::Token>>::Position
type Error = <Input as StreamOnce>::Error
sourceimpl<Input: Iterator> StreamOnce for IteratorStream<Input> where
Input::Item: Clone + PartialEq,
impl<Input: Iterator> StreamOnce for IteratorStream<Input> where
Input::Item: Clone + PartialEq,
sourceimpl<R: Read> StreamOnce for combine::stream::read::Stream<R>
Available on crate feature std
only.
impl<R: Read> StreamOnce for combine::stream::read::Stream<R>
Available on crate feature
std
only.sourceimpl<S> StreamOnce for combine::stream::easy::Stream<S> where
S: StreamOnce + Positioned,
S::Token: PartialEq,
S::Range: PartialEq,
Available on crate feature std
only.
impl<S> StreamOnce for combine::stream::easy::Stream<S> where
S: StreamOnce + Positioned,
S::Token: PartialEq,
S::Range: PartialEq,
Available on crate feature
std
only.