forked from katzen-cafe/iowo
37 lines
1 KiB
Rust
37 lines
1 KiB
Rust
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use crate::{syntax_error::SyntaxError, syntax_kind::SyntaxKind};
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use super::{value, CompletedMarker, Parser};
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pub(super) fn array(p: &mut Parser) -> Option<CompletedMarker> {
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let array_start = p.start("array");
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if !p.eat(SyntaxKind::BRACKET_OPEN) {
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array_start.abandon(p);
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return None;
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}
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let el = p.start("arr_el");
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value(p);
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el.complete(p, SyntaxKind::ELEMENT);
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while p.at(SyntaxKind::COMMA) {
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let potential_trailing_comma = p.start("potential_trailing_comma");
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p.eat(SyntaxKind::COMMA);
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let maybe_el = p.start("arr_el");
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if !value(p) {
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maybe_el.abandon(p);
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potential_trailing_comma.complete(p, SyntaxKind::TRAILING_COMMA);
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} else {
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maybe_el.complete(p, SyntaxKind::ELEMENT);
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potential_trailing_comma.abandon(p);
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}
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}
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Some(if !p.eat(SyntaxKind::BRACKET_CLOSE) {
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array_start.error(p, SyntaxError::UnclosedArray)
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} else {
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array_start.complete(p, SyntaxKind::ARRAY)
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})
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}
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