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< main > < div class = "width-limiter" > < nav class = "sub" > < form class = "search-form" > < span > < / span > < div id = "sidebar-button" tabindex = "-1" > < a href = "../../winnow/all.html" title = "show sidebar" > < / a > < / div > < input class = "search-input" name = "search" aria-label = "Run search in the documentation" autocomplete = "off" spellcheck = "false" placeholder = "Click or press ‘ ’ ‘ ’ type = "search" > < div id = "help-button" tabindex = "-1" > < a href = "../../help.html" title = "help" > ?< / a > < / div > < div id = "settings-menu" tabindex = "-1" > < a href = "../../settings.html" title = "settings" > < img width = "22" height = "22" alt = "Change settings" src = "../../static.files/wheel-7b819b6101059cd0.svg" > < / a > < / div > < / form > < / nav > < section id = "main-content" class = "content" > < div class = "main-heading" > < h1 > Function < a href = "../index.html" > winnow< / a > ::< wbr > < a href = "index.html" > combinator< / a > ::< wbr > < a class = "fn" href = "#" > repeat< / a > < button id = "copy-path" title = "Copy item path to clipboard" > < img src = "../../static.files/clipboard-7571035ce49a181d.svg" width = "19" height = "18" alt = "Copy item path" > < / button > < / h1 > < span class = "out-of-band" > < a class = "src" href = "../../src/winnow/combinator/multi.rs.html#109-127" > source< / a > · < button id = "toggle-all-docs" title = "collapse all docs" > [< span > − < / span > ]< / button > < / span > < / div > < pre class = "rust item-decl" > < code > pub fn repeat< Input, Output, Accumulator, Error, ParseNext> (
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occurrences: impl < a class = "trait" href = "https://doc.rust-lang.org/1.78.0/core/convert/trait.Into.html" title = "trait core::convert::Into" > Into< / a > < < a class = "struct" href = "../stream/struct.Range.html" title = "struct winnow::stream::Range" > Range< / a > > ,
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parser: ParseNext
) -> < a class = "struct" href = "struct.Repeat.html" title = "struct winnow::combinator::Repeat" > Repeat< / a > < ParseNext, Input, Output, Accumulator, Error> < div class = "where" > where
Input: < a class = "trait" href = "../stream/trait.Stream.html" title = "trait winnow::stream::Stream" > Stream< / a > ,
Accumulator: < a class = "trait" href = "../stream/trait.Accumulate.html" title = "trait winnow::stream::Accumulate" > Accumulate< / a > < Output> ,
ParseNext: < a class = "trait" href = "../trait.Parser.html" title = "trait winnow::Parser" > Parser< / a > < Input, Output, Error> ,
Error: < a class = "trait" href = "../error/trait.ParserError.html" title = "trait winnow::error::ParserError" > ParserError< / a > < Input> ,< / div > < / code > < / pre > < details class = "toggle top-doc" open > < summary class = "hideme" > < span > Expand description< / span > < / summary > < div class = "docblock" > < p > < a href = "../stream/trait.Accumulate.html" title = "trait winnow::stream::Accumulate" > < code > Accumulate< / code > < / a > the output of a parser into a container, like < code > Vec< / code > < / p >
< p > This stops before < code > n< / code > when the parser returns < a href = "../error/enum.ErrMode.html#variant.Backtrack" title = "variant winnow::error::ErrMode::Backtrack" > < code > ErrMode::Backtrack< / code > < / a > . To instead chain an error up, see
< a href = "fn.cut_err.html" title = "fn winnow::combinator::cut_err" > < code > cut_err< / code > < / a > .< / p >
< p > To recognize a series of tokens, < a href = "../stream/trait.Accumulate.html" title = "trait winnow::stream::Accumulate" > < code > Accumulate< / code > < / a > into a < code > ()< / code > and then < a href = "../trait.Parser.html#method.recognize" title = "method winnow::Parser::recognize" > < code > Parser::recognize< / code > < / a > .< / p >
< p > < strong > Warning:< / strong > If the parser passed to < code > repeat< / code > accepts empty inputs
(like < code > alpha0< / code > or < code > digit0< / code > ), < code > repeat< / code > will return an error,
to prevent going into an infinite loop.< / p >
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< h2 id = "example" > < a class = "doc-anchor" href = "#example" > §< / a > Example< / h2 >
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< p > Zero or more repetitions:< / p >
< div class = "example-wrap" > < pre class = "rust rust-example-rendered" > < code > < span class = "kw" > use < / span > winnow::combinator::repeat;
< span class = "kw" > fn < / span > parser(s: < span class = "kw-2" > & < / span > str) -> IResult< < span class = "kw-2" > & < / span > str, Vec< < span class = "kw-2" > & < / span > str> > {
repeat(< span class = "number" > 0< / span > .., < span class = "string" > "abc"< / span > ).parse_peek(s)
}
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abcabc"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > ""< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > , < span class = "string" > "abc"< / span > ])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abc123"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > "123"< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > ])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "123123"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > "123123"< / span > , < span class = "macro" > vec!< / span > [])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > ""< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > ""< / span > , < span class = "macro" > vec!< / span > [])));< / code > < / pre > < / div >
< p > One or more repetitions:< / p >
< div class = "example-wrap" > < pre class = "rust rust-example-rendered" > < code > < span class = "kw" > use < / span > winnow::combinator::repeat;
< span class = "kw" > fn < / span > parser(s: < span class = "kw-2" > & < / span > str) -> IResult< < span class = "kw-2" > & < / span > str, Vec< < span class = "kw-2" > & < / span > str> > {
repeat(< span class = "number" > 1< / span > .., < span class = "string" > "abc"< / span > ).parse_peek(s)
}
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abcabc"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > ""< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > , < span class = "string" > "abc"< / span > ])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abc123"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > "123"< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > ])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "123123"< / span > ), < span class = "prelude-val" > Err< / span > (ErrMode::Backtrack(InputError::new(< span class = "string" > "123123"< / span > , ErrorKind::Tag))));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > ""< / span > ), < span class = "prelude-val" > Err< / span > (ErrMode::Backtrack(InputError::new(< span class = "string" > ""< / span > , ErrorKind::Tag))));< / code > < / pre > < / div >
< p > Fixed number of repetitions:< / p >
< div class = "example-wrap" > < pre class = "rust rust-example-rendered" > < code > < span class = "kw" > use < / span > winnow::combinator::repeat;
< span class = "kw" > fn < / span > parser(s: < span class = "kw-2" > & < / span > str) -> IResult< < span class = "kw-2" > & < / span > str, Vec< < span class = "kw-2" > & < / span > str> > {
repeat(< span class = "number" > 2< / span > , < span class = "string" > "abc"< / span > ).parse_peek(s)
}
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abcabc"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > ""< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > , < span class = "string" > "abc"< / span > ])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abc123"< / span > ), < span class = "prelude-val" > Err< / span > (ErrMode::Backtrack(InputError::new(< span class = "string" > "123"< / span > , ErrorKind::Tag))));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "123123"< / span > ), < span class = "prelude-val" > Err< / span > (ErrMode::Backtrack(InputError::new(< span class = "string" > "123123"< / span > , ErrorKind::Tag))));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > ""< / span > ), < span class = "prelude-val" > Err< / span > (ErrMode::Backtrack(InputError::new(< span class = "string" > ""< / span > , ErrorKind::Tag))));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abcabcabc"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > "abc"< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > , < span class = "string" > "abc"< / span > ])));< / code > < / pre > < / div >
< p > Arbitrary repetitions:< / p >
< div class = "example-wrap" > < pre class = "rust rust-example-rendered" > < code > < span class = "kw" > use < / span > winnow::combinator::repeat;
< span class = "kw" > fn < / span > parser(s: < span class = "kw-2" > & < / span > str) -> IResult< < span class = "kw-2" > & < / span > str, Vec< < span class = "kw-2" > & < / span > str> > {
repeat(< span class = "number" > 0< / span > ..=< span class = "number" > 2< / span > , < span class = "string" > "abc"< / span > ).parse_peek(s)
}
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abcabc"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > ""< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > , < span class = "string" > "abc"< / span > ])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abc123"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > "123"< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > ])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "123123"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > "123123"< / span > , < span class = "macro" > vec!< / span > [])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > ""< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > ""< / span > , < span class = "macro" > vec!< / span > [])));
< span class = "macro" > assert_eq!< / span > (parser(< span class = "string" > "abcabcabc"< / span > ), < span class = "prelude-val" > Ok< / span > ((< span class = "string" > "abc"< / span > , < span class = "macro" > vec!< / span > [< span class = "string" > "abc"< / span > , < span class = "string" > "abc"< / span > ])));< / code > < / pre > < / div >
< / div > < / details > < / section > < / div > < / main > < / body > < / html >
