69 lines
2.5 KiB
Rust
69 lines
2.5 KiB
Rust
use crate::expressions::*;
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use crate::identifiers::*;
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use crate::util::*;
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use nom::bytes::complete::*;
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use nom::combinator::*;
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use nom::multi::*;
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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 attr_spec: Vec<AttrSpec<'a>>,
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}
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#[derive(Debug)]
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pub struct AttrSpec<'a> {
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pub attr_name: Identifier<'a>,
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pub rvalue: Option<ConstantExpression<'a>>,
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}
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// -----------------------------------------------------------------------------
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pub fn attribute_instance(s: &str) -> IResult<&str, AttributeInstance> {
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let (s, _) = tag("(*")(s)?;
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let (s, attr_spec) = separated_nonempty_list(sp(tag(",")), sp(attr_spec))(s)?;
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let (s, _) = sp(tag("*)"))(s)?;
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Ok((s, AttributeInstance { attr_spec }))
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}
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pub fn attr_spec(s: &str) -> IResult<&str, AttrSpec> {
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let (s, attr_name) = identifier(s)?;
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let (s, rvalue) = opt(preceded(sp(tag("=")), sp(constant_expression)))(s)?;
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Ok((s, AttrSpec { attr_name, rvalue }))
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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() {
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assert_eq!(
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format!(
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"{:?}",
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all_consuming(attribute_instance)("(* full_case, parallel_case *)")
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),
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"Ok((\"\", AttributeInstance { attr_spec: [AttrSpec { attr_name: Identifier { raw: [\"full_case\"] }, rvalue: None }, AttrSpec { attr_name: Identifier { raw: [\"parallel_case\"] }, rvalue: None }] }))"
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);
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assert_eq!(
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format!(
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"{:?}",
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all_consuming(attribute_instance)("(* full_case=1 *)")
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),
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"Ok((\"\", AttributeInstance { attr_spec: [AttrSpec { attr_name: Identifier { raw: [\"full_case\"] }, rvalue: Some(Nullary(PrimaryLiteral(Number(IntegralNumber(UnsignedNumber(\"1\")))))) }] }))"
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);
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assert_eq!(
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format!(
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"{:?}",
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all_consuming(attribute_instance)("(* full_case=1, parallel_case = 0 *)")
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),
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"Ok((\"\", AttributeInstance { attr_spec: [AttrSpec { attr_name: Identifier { raw: [\"full_case\"] }, rvalue: Some(Nullary(PrimaryLiteral(Number(IntegralNumber(UnsignedNumber(\"1\")))))) }, AttrSpec { attr_name: Identifier { raw: [\"parallel_case\"] }, rvalue: Some(Nullary(PrimaryLiteral(Number(IntegralNumber(UnsignedNumber(\"0\")))))) }] }))"
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);
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}
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}
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