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oak_dot/parser/
mod.rs

1//! Parser implementation for the DOT language.
2
3/// Element types for the DOT language syntax tree.
4pub mod element_type;
5
6use crate::{language::DotLanguage, lexer::DotLexer};
7use oak_core::{
8    parser::{ParseOutput, Parser, ParserState, parse_with_lexer},
9    source::{Source, TextEdit},
10};
11
12pub(crate) type State<'a, S> = ParserState<'a, DotLanguage, S>;
13
14/// A parser for the DOT language.
15pub struct DotParser<'config> {
16    pub(crate) config: &'config DotLanguage,
17}
18
19impl<'config> DotParser<'config> {
20    /// Creates a new `DotParser` with the given configuration.
21    pub fn new(config: &'config DotLanguage) -> Self {
22        Self { config }
23    }
24}
25
26impl<'config> Parser<DotLanguage> for DotParser<'config> {
27    fn parse<'a, S: Source + ?Sized>(&self, text: &'a S, edits: &[TextEdit], cache: &'a mut impl oak_core::ParseCache<DotLanguage>) -> ParseOutput<'a, DotLanguage> {
28        let lexer = DotLexer::new(self.config);
29        parse_with_lexer(&lexer, text, edits, cache, |state| {
30            let checkpoint = state.checkpoint();
31            while state.not_at_end() {
32                state.bump();
33            }
34            Ok(state.finish_at(checkpoint, element_type::DotElementType::Root))
35        })
36    }
37}