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Starting stand-alone parsers for key value pairs

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This commit is contained in:
Tom Alexander 2020-04-06 23:21:03 -04:00
parent ffce2b0569
commit 8641e5a98b
Signed by: talexander
GPG Key ID: D3A179C9A53C0EDE
1 changed files with 16 additions and 3 deletions
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19
src/parser/parser.rs
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@ -19,6 +19,7 @@ use nom::multi::many1;
use nom::multi::separated_list;
use nom::sequence::delimited;
use nom::sequence::preceded;
use nom::sequence::separated_pair;
use nom::sequence::tuple;
use nom::IResult;
@ -166,6 +167,15 @@ fn path(i: &str) -> IResult<&str, Path> {
map(separated_list(tag("."), key), |body| Path { keys: body })(i)
}
/// Either a literal or a path to a value
fn rvalue(i: &str) -> IResult<&str, &str> {
key(i)
}
fn key_value_pair(i: &str) -> IResult<&str, (&str, Path)> {
separated_pair(key, tag("="), path)(i)
}
/// Display a value from the context
fn reference(i: &str) -> IResult<&str, Reference> {
let (remaining, (p, filters)) = delimited(tag("{"), tuple((path, many0(filter))), tag("}"))(i)?;
@ -665,10 +675,13 @@ mod tests {
assert_eq!(
delimited(
tag("{>"),
tuple((key, opt(preceded(space1, separated_list(space1, key))),)),
tuple((
key,
opt(preceded(space1, separated_list(space1, key_value_pair))),
)),
tag("/}"),
)("{>foo bar/}"),
Ok(("", ("foo", Some(vec!["bar"]))))
)("{>foo bar=baz/}"),
Ok(("", ("foo", Some(vec![("bar", Path { keys: vec!["baz"] })]))))
);
}
}