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get_fail_matcher implemented.

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This commit is contained in:
Tom Alexander 2022-11-26 23:35:10 -05:00
parent 4a2b633f9c
commit 9673917a3c
Signed by: talexander
GPG Key ID: D3A179C9A53C0EDE
1 changed files with 20 additions and 4 deletions
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24
src/parser/new_context.rs
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@ -27,9 +27,9 @@ pub trait NodeType<'p> {
impl<'p, T> NodeType<'p> for Node<'p, T> impl<'p, T> NodeType<'p> for Node<'p, T>
where where
T: ContextElement, T: for<'s> ContextElement<'s>,
{ {
fn get_data(&self) -> &dyn ContextElement { fn get_data<'s>(&'s self) -> &dyn ContextElement {
&self.data &self.data
} }
@ -38,7 +38,9 @@ where
} }
} }
pub trait ContextElement {} pub trait ContextElement<'r> {
fn get_fail_matcher(&self) -> ChainBehavior<'r>;
}
struct FailMatcherNode<'r> { struct FailMatcherNode<'r> {
fail_matcher: ChainBehavior<'r>, fail_matcher: ChainBehavior<'r>,
@ -48,7 +50,21 @@ struct PreviousElementNode<'r> {
dummy: &'r str, dummy: &'r str,
} }
enum ChainBehavior<'r> { #[derive(Clone)]
pub enum ChainBehavior<'r> {
AndParent(Option<&'r Matcher>), AndParent(Option<&'r Matcher>),
IgnoreParent(Option<&'r Matcher>), IgnoreParent(Option<&'r Matcher>),
} }
impl<'r> ContextElement<'r> for FailMatcherNode<'r> {
fn get_fail_matcher(&self) -> ChainBehavior<'r> {
// TODO: Remove this clone
self.fail_matcher.clone()
}
}
impl<'r> ContextElement<'r> for PreviousElementNode<'r> {
fn get_fail_matcher(&self) -> ChainBehavior<'r> {
ChainBehavior::AndParent(None)
}
}