54 lines
1.4 KiB
Rust
54 lines
1.4 KiB
Rust
use crate::parser::*;
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use nom::combinator::*;
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use nom::sequence::*;
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use nom::IResult;
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// -----------------------------------------------------------------------------
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#[derive(Debug)]
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pub struct AttributeInstance<'a> {
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pub nodes: (Symbol<'a>, List<Symbol<'a>, AttrSpec<'a>>, Symbol<'a>),
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}
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#[derive(Debug)]
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pub struct AttrSpec<'a> {
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pub nodes: (Identifier<'a>, Option<(Symbol<'a>, ConstantExpression<'a>)>),
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}
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// -----------------------------------------------------------------------------
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pub fn attribute_instance(s: Span) -> IResult<Span, AttributeInstance> {
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let (s, a) = symbol("(*")(s)?;
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let (s, b) = list(symbol(","), attr_spec)(s)?;
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let (s, c) = symbol("*)")(s)?;
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Ok((s, AttributeInstance { nodes: (a, b, c) }))
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}
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pub fn attr_spec(s: Span) -> IResult<Span, AttrSpec> {
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let (s, a) = identifier(s)?;
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let (s, b) = opt(pair(symbol("="), constant_expression))(s)?;
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Ok((s, AttrSpec { nodes: (a, b) }))
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}
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// -----------------------------------------------------------------------------
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_attribute_instance() {
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parser_test!(
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attribute_instance,
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"(* full_case, parallel_case *)",
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Ok((_, _))
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);
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parser_test!(attribute_instance, "(* full_case=1 *)", Ok((_, _)));
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parser_test!(
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attribute_instance,
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"(* full_case=1, parallel_case = 0 *)",
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Ok((_, _))
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);
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}
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}
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