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Introduce State::advance_mut and State::consume_mut to simplify things

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This commit is contained in:
Joshua Warner 2022-07-19 19:20:38 -07:00
parent 7a594901dd
commit a1512dfd79
2 changed files with 36 additions and 29 deletions
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19
crates/compiler/parse/src/state.rs
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@ -37,6 +37,25 @@ impl<'a> State<'a> {
self.pos().offset - self.line_start.offset
}
/// Mutably advance the state by a given offset
#[inline(always)]
pub(crate) fn advance_mut(&mut self, offset: usize) {
self.offset += offset;
}
/// If the next `text.len()` bytes of the input match the provided `text`,
/// mutably advance the state by that much.
#[inline(always)]
pub(crate) fn consume_mut(&mut self, text: &str) -> bool {
let found = self.bytes().starts_with(text.as_bytes());
if found {
self.advance_mut(text.len());
}
found
}
#[must_use]
#[inline(always)]
pub(crate) const fn advance(mut self, offset: usize) -> State<'a> {