css_parse/
parser_checkpoint.rs

1use crate::{Cursor, Kind, Span, ToSpan, Token};
2
3/// Represents a point during the [Parser's][crate::Parser] lifecycle; retaining state that can then be rewound.
4///
5/// Don't use this directly, instead retrieve a checkpoint with [Parser::checkpoint()][crate::Parser::checkpoint] and
6/// rewind the parser to a checkpoint with [Parser::rewind()][crate::Parser::rewind()].
7#[derive(Debug, Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
8pub struct ParserCheckpoint {
9	pub(crate) cursor: Cursor,
10	pub(crate) errors_pos: u8,
11	pub(crate) trivia_pos: u16,
12}
13
14impl From<ParserCheckpoint> for Cursor {
15	fn from(value: ParserCheckpoint) -> Self {
16		value.cursor
17	}
18}
19
20impl From<ParserCheckpoint> for Token {
21	fn from(value: ParserCheckpoint) -> Self {
22		value.cursor.token()
23	}
24}
25
26impl From<ParserCheckpoint> for Kind {
27	fn from(value: ParserCheckpoint) -> Self {
28		value.cursor.token().kind()
29	}
30}
31
32impl ToSpan for ParserCheckpoint {
33	fn to_span(&self) -> Span {
34		self.cursor.span()
35	}
36}
37
38#[cfg(test)]
39mod test {
40	use super::*;
41
42	#[test]
43	fn size_test() {
44		assert_eq!(std::mem::size_of::<ParserCheckpoint>(), 16);
45	}
46}
css_parse/parser_checkpoint.rs

css_parse/
parser_checkpoint.rs
