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parser cuts

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This commit is contained in:
brevalferrari 2025-06-06 01:34:05 +02:00
parent 7460a14bc1
commit b03b0ef5ee
1 changed files with 14 additions and 12 deletions
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26
src/parser.rs
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@ -11,7 +11,7 @@ use nom::{
complete::{char, space1, usize}, complete::{char, space1, usize},
streaming::one_of, streaming::one_of,
}, },
combinator::{all_consuming, opt, value}, combinator::{all_consuming, cut, opt, value},
error::{Error, ParseError}, error::{Error, ParseError},
multi::many0, multi::many0,
sequence::{delimited, preceded}, sequence::{delimited, preceded},
@ -53,7 +53,7 @@ where
input: &'a str, input: &'a str,
) -> Result<TokenVec, Error<nom_locate::LocatedSpan<&'a str>>> { ) -> Result<TokenVec, Error<nom_locate::LocatedSpan<&'a str>>> {
debug!("parsing input \"{input}\""); debug!("parsing input \"{input}\"");
token_parser(self) all_consuming(token_parser(self))
.parse_complete(LocatedSpan::new(input)) .parse_complete(LocatedSpan::new(input))
.finish() .finish()
.map(|(_, o)| o) .map(|(_, o)| o)
@ -81,7 +81,7 @@ where
many0(value((), char('#').and(take_till(|c| c == '\n'))).or(value((), space1))), many0(value((), char('#').and(take_till(|c| c == '\n'))).or(value((), space1))),
) )
}; };
all_consuming(many0(delimited( many0(delimited(
space_or_comment(), space_or_comment(),
alt(( alt((
Silence::parser().map(into_box), Silence::parser().map(into_box),
@ -93,7 +93,7 @@ where
Slope::parser(parser).map(into_box), Slope::parser(parser).map(into_box),
)), )),
space_or_comment(), space_or_comment(),
))) ))
.map(Into::into) .map(Into::into)
} }
@ -171,10 +171,12 @@ impl VariableChange {
move |i: I| { move |i: I| {
preceded( preceded(
char('$'), char('$'),
one_of(variables.as_ref().iter().collect::<String>().as_str()), cut(
) one_of(variables.as_ref().iter().collect::<String>().as_str())
.and(expression_parser(variables.as_ref())) .and(expression_parser(variables.as_ref()))
.map(|(name, change)| VariableChange(name, change)) .map(|(name, change)| VariableChange(name, change)),
),
)
.parse(i) .parse(i)
} }
} }
@ -212,7 +214,7 @@ impl Loop {
.map(LoopCount::Variable), .map(LoopCount::Variable),
))) )))
.and(token_parser(parser)), .and(token_parser(parser)),
char(')'), cut(char(')')),
) )
.map(|(c, v)| Self(c.unwrap_or_default(), v)) .map(|(c, v)| Self(c.unwrap_or_default(), v))
.parse(input) .parse(input)
@ -237,7 +239,7 @@ impl Tuplet {
{ {
trace!("making the {} parser", type_name::<Self>()); trace!("making the {} parser", type_name::<Self>());
|input| { |input| {
delimited(char('['), token_parser(parser), char(']')) delimited(char('['), token_parser(parser), cut(char(']')))
.map(Self) .map(Self)
.parse(input) .parse(input)
} }
@ -277,15 +279,15 @@ impl Slope {
let iter: std::vec::IntoIter<(String, VariableChange)> = slopes.into_iter(); let iter: std::vec::IntoIter<(String, VariableChange)> = slopes.into_iter();
delimited( delimited(
char('{'), char('{'),
alt(iter cut(alt(iter
.map(|(k, v)| { .map(|(k, v)| {
Box::new(move |input: I| value(v.clone(), tag(k.as_str())).parse(input)) Box::new(move |input: I| value(v.clone(), tag(k.as_str())).parse(input))
as Box<dyn Fn(I) -> IResult<I, VariableChange>> as Box<dyn Fn(I) -> IResult<I, VariableChange>>
}) })
.collect::<Vec<Box<dyn Fn(I) -> IResult<I, VariableChange>>>>() .collect::<Vec<Box<dyn Fn(I) -> IResult<I, VariableChange>>>>()
.as_mut_slice()) .as_mut_slice()))
.and(token_parser(parser)), .and(token_parser(parser)),
char('}'), cut(char('}')),
) )
.map(|(i, v)| Self::new(i, v)) .map(|(i, v)| Self::new(i, v))
.parse(input) .parse(input)