Struct DefaultValue

pub struct DefaultValue<F, I, O, O2, E>
where
    F: Parser<I, O, E>,
    O2: Default,
{ /* private fields */ }

Implementation of Parser::default_value

Trait Implementations

impl<F, I, O, O2, E> Parser<I, O2, E> for DefaultValue<F, I, O, O2, E>

where F: Parser<I, O, E>, O2: Default,

fn parse_next(&mut self, input: &mut I) -> PResult<O2, E>

Take tokens from the Stream, turning it into the output

fn parse(&mut self, input: I) -> Result<O, ParseError<I, E>>

where Self: Sized, I: Stream + StreamIsPartial, E: ParserError<I>,

Parse all of input, generating O from it

fn parse_peek(&mut self, input: I) -> IResult<I, O, E>

Take tokens from the Stream, turning it into the output

fn by_ref(&mut self) -> ByRef<'_, Self>

where Self: Sized,

Treat &mut Self as a parser

fn value<O2>(self, val: O2) -> Value<Self, I, O, O2, E>

where Self: Sized, O2: Clone,

Produce the provided value

fn default_value<O2>(self) -> DefaultValue<Self, I, O, O2, E>

where Self: Sized, O2: Default,

Produce a type’s default value

fn void(self) -> Void<Self, I, O, E>

where Self: Sized,

Discards the output of the Parser

fn output_into<O2>(self) -> OutputInto<Self, I, O, O2, E>

where Self: Sized, O: Into<O2>,

Convert the parser’s output to another type using std::convert::From

fn take(self) -> Take<Self, I, O, E>

where Self: Sized, I: Stream,

Produce the consumed input as produced value.

fn recognize(self) -> Take<Self, I, O, E>

where Self: Sized, I: Stream,

👎Deprecated since 0.6.14: Replaced with Parser::take

Replaced with Parser::take

fn with_taken(self) -> WithTaken<Self, I, O, E>

where Self: Sized, I: Stream,

Produce the consumed input with the output

fn with_recognized(self) -> WithTaken<Self, I, O, E>

where Self: Sized, I: Stream,

👎Deprecated since 0.6.14: Replaced with Parser::with_taken

Replaced with Parser::with_taken

fn span(self) -> Span<Self, I, O, E>

where Self: Sized, I: Stream + Location,

Produce the location of the consumed input as produced value.

fn with_span(self) -> WithSpan<Self, I, O, E>

where Self: Sized, I: Stream + Location,

Produce the location of consumed input with the output

fn map<G, O2>(self, map: G) -> Map<Self, G, I, O, O2, E>

where G: FnMut(O) -> O2, Self: Sized,

Maps a function over the output of a parser

fn try_map<G, O2, E2>(self, map: G) -> TryMap<Self, G, I, O, O2, E, E2>

where Self: Sized, G: FnMut(O) -> Result<O2, E2>, I: Stream, E: FromExternalError<I, E2>,

Applies a function returning a Result over the output of a parser.

fn verify_map<G, O2>(self, map: G) -> VerifyMap<Self, G, I, O, O2, E>

where Self: Sized, G: FnMut(O) -> Option<O2>, I: Stream, E: ParserError<I>,

Apply both Parser::verify and Parser::map.

fn flat_map<G, H, O2>(self, map: G) -> FlatMap<Self, G, H, I, O, O2, E>

where Self: Sized, G: FnMut(O) -> H, H: Parser<I, O2, E>,

Creates a parser from the output of this one

fn and_then<G, O2>(self, inner: G) -> AndThen<Self, G, I, O, O2, E>

where Self: Sized, G: Parser<O, O2, E>, O: StreamIsPartial, I: Stream,

Applies a second parser over the output of the first one

fn parse_to<O2>(self) -> ParseTo<Self, I, O, O2, E>

where Self: Sized, I: Stream, O: ParseSlice<O2>, E: ParserError<I>,

Apply std::str::FromStr to the output of the parser

fn verify<G, O2>(self, filter: G) -> Verify<Self, G, I, O, O2, E>

where Self: Sized, G: FnMut(&O2) -> bool, I: Stream, O: Borrow<O2>, O2: ?Sized, E: ParserError<I>,

Returns the output of the child parser if it satisfies a verification function.

fn context<C>(self, context: C) -> Context<Self, I, O, E, C>

where Self: Sized, I: Stream, E: AddContext<I, C>, C: Clone + Debug,

If parsing fails, add context to the error

fn complete_err(self) -> CompleteErr<Self>

where Self: Sized,

Transforms Incomplete into Backtrack

fn err_into<E2>(self) -> ErrInto<Self, I, O, E, E2>

where Self: Sized, E: Into<E2>,

Convert the parser’s error to another type using std::convert::From