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Make the fail matcher code in the new context tree work.

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This commit is contained in:
Tom Alexander 2022-11-26 21:55:33 -05:00
parent 8abf194a12
commit f0de041710
Signed by: talexander
GPG Key ID: D3A179C9A53C0EDE
1 changed files with 22 additions and 13 deletions
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35
src/parser/new_context.rs
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@ -1,10 +1,11 @@
use std::borrow::Cow;
use nom::combinator::not;
use nom::combinator::recognize;
use nom::complete::take;
use nom::error::ErrorKind;
use nom::error::ParseError;
use nom::error::VerboseError;
use nom::IResult;
use std::borrow::Cow;
use super::text::bold_end;
use super::text::Res;
@ -76,23 +77,25 @@ impl<'r> ContextTree<'r, dyn OrgModeContext<'r>> {
}
ChainBehavior::AndParent(None) => {}
ChainBehavior::IgnoreParent(Some(matcher)) => {
let local_result = matcher(i);
if local_result.is_ok() {
return local_result;
}
// TODO: Make this a custom error
not(take(0usize))(i)?;
return matcher(i);
}
ChainBehavior::IgnoreParent(None) => {
// TODO: Make this a custom error
not(take(0usize))(i)?;
return Err(nom::Err::Error(VerboseError::from_error_kind(
i,
ErrorKind::ManyTill,
)));
}
};
current_node = current_node.map(|current_head| current_head.parent).flatten();
current_node = current_node
.map(|current_head| current_head.parent)
.flatten();
}
// TODO: Make this a custom error
not(take(0usize))(i)?;
unreachable!()
return Err(nom::Err::Error(VerboseError::from_error_kind(
i,
ErrorKind::ManyTill,
)));
}
}
@ -104,7 +107,7 @@ impl<'r> OrgModeContext<'r> for FailMatcherNode<'r> {
impl<'r> OrgModeContext<'r> for PreviousElementNode<'r> {
fn get_fail_matcher(&'r self) -> Cow<ChainBehavior<'r>> {
todo!()
Cow::Owned(ChainBehavior::AndParent(None))
}
}
@ -122,3 +125,9 @@ fn test_context() {
};
let child2 = child1.with_additional_node(&child2_context);
}
impl<'r, T> std::fmt::Debug for ContextTree<'r, T> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "ContextTree")
}
}