bluejay_parser/ast/executable/
selection_set.rs

1use crate::ast::executable::Selection;
2use crate::ast::{FromTokens, IsMatch, ParseError, Tokens};
3use crate::lexical_token::PunctuatorType;
4use crate::{HasSpan, Span};
5use bluejay_core::AsIter;
6
7#[derive(Debug)]
8pub struct SelectionSet<'a> {
9    selections: Vec<Selection<'a>>,
10    span: Span,
11}
12
13impl<'a> FromTokens<'a> for SelectionSet<'a> {
14    #[inline]
15    fn from_tokens(tokens: &mut impl Tokens<'a>) -> Result<Self, ParseError> {
16        let open_span = tokens.expect_punctuator(PunctuatorType::OpenBrace)?;
17        let mut selections: Vec<Selection> = Vec::new();
18        let close_span = loop {
19            selections.push(Selection::from_tokens(tokens)?);
20            if let Some(close_span) = tokens.next_if_punctuator(PunctuatorType::CloseBrace) {
21                break close_span;
22            }
23        };
24        let span = open_span.merge(&close_span);
25        Ok(Self { selections, span })
26    }
27}
28
29impl<'a> IsMatch<'a> for SelectionSet<'a> {
30    #[inline]
31    fn is_match(tokens: &mut impl Tokens<'a>) -> bool {
32        tokens.peek_punctuator_matches(0, PunctuatorType::OpenBrace)
33    }
34}
35
36impl<'a> bluejay_core::Indexable for SelectionSet<'a> {
37    type Id = Span;
38
39    fn id(&self) -> &Self::Id {
40        &self.span
41    }
42}
43
44impl<'a> bluejay_core::executable::SelectionSet for SelectionSet<'a> {
45    type Selection = Selection<'a>;
46}
47
48impl<'a> AsIter for SelectionSet<'a> {
49    type Item = Selection<'a>;
50    type Iterator<'b> = std::slice::Iter<'b, Self::Item> where 'a: 'b;
51
52    fn iter(&self) -> Self::Iterator<'_> {
53        self.selections.iter()
54    }
55
56    fn len(&self) -> usize {
57        self.selections.len()
58    }
59}
60
61impl<'a> HasSpan for SelectionSet<'a> {
62    fn span(&self) -> &Span {
63        &self.span
64    }
65}
bluejay_parser/ast/executable/selection_set.rs

bluejay_parser/ast/executable/
selection_set.rs
