19 lines
426 B
Rust
19 lines
426 B
Rust
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use std::iter::Iterator;
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use std::iter::Peekable;
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pub trait IsWhitespace {
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fn is_whitespace(&self) -> bool;
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}
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pub fn devour_whitespace<I: Iterator<Item = W>, W: IsWhitespace>(s: &mut Peekable<I>) -> bool {
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let mut found_whitespace = false;
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while let Some(w) = s.peek() {
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if !w.is_whitespace() {
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break;
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}
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found_whitespace = true;
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s.next();
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}
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found_whitespace
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}
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