bluejay_parser/ast/executable/
variable_definitions.rs

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

bluejay_parser/ast/executable/
variable_definitions.rs
