Going to try flatly defined functions and wrap them.
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@ -1,11 +1,15 @@
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macro_rules! parser_with_context {
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($name:ident,$typ:ty,$inp:ident,$context:ident,$fnbody:block) => {
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pub fn $name<'c, I: Clone, O, E: nom::error::ParseError<I>>(
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$context: NomContext<'c, I, O, E>,
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) -> impl for<'a> FnMut(&'a str) -> IResult<&'a str, $typ, VerboseError<&'a str>> + 'c {
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|$inp| $fnbody
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}
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};
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}
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// macro_rules! parser_with_context {
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// ($name:ident,$typ:ty,$inp:ident,$context:ident,$fnbody:block) => {
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// pub fn $name<'c>(
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// $context: NomContext<'c, &str, &str, VerboseError<&str>>,
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// ) -> impl for<'a> FnMut(&'a str) -> IResult<&'a str, $typ, VerboseError<&'a str>> + 'c {
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// |$inp| $fnbody
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// }
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// };
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// }
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pub(crate) use parser_with_context;
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// use nom::error::VerboseError;
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// use nom::IResult;
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// pub(crate) use parser_with_context;
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// use super::nom_context::NomContext;
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@ -24,7 +24,6 @@ use nom::sequence::tuple;
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use nom::IResult;
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use super::nom_context::NomContext;
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use super::text_element_parser::text_element;
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pub type Res<T, U> = IResult<T, U, VerboseError<T>>;
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@ -130,7 +129,8 @@ pub fn link_end(input: &str) -> Res<&str, TextElement> {
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pub fn paragraph(input: &str) -> Res<&str, (Vec<TextElement>, &str)> {
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let initial_context = NomContext::new(¶graph_end);
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many_till(text_element(initial_context), paragraph_end)(input)
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// many_till(text_element(initial_context), paragraph_end)(input)
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todo!()
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}
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fn paragraph_end(input: &str) -> Res<&str, &str> {
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@ -1,10 +1,11 @@
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//! A single element of text.
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use super::nom_context::NomContext;
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use super::parser_with_context::parser_with_context;
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// use super::parser_with_context::parser_with_context;
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use super::text::line_break;
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use super::text::space;
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use super::text::span;
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use super::text::symbol;
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use super::text::Res;
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use super::text::TextElement;
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use nom::branch::alt;
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use nom::combinator::map;
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@ -12,22 +13,60 @@ use nom::combinator::not;
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use nom::error::VerboseError;
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use nom::IResult;
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parser_with_context!(text_element, TextElement, i, context, {
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// not(|i| (context.fail_matcher)(i))(i)?;
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alt((
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// map(
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// BoldParser::new(slf.context.fail_matcher.clone()),
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// TextElement::Bold,
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// ),
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// map(
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// LinkParser::new(slf.context.fail_matcher.clone()),
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// TextElement::Link,
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// ),
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map(span, TextElement::Span),
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map(symbol("*"), TextElement::Symbol),
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map(symbol("["), TextElement::Symbol),
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map(symbol("]"), TextElement::Symbol),
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map(space, TextElement::Space),
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map(line_break, TextElement::LineBreak),
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))(i)
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});
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// parser_with_context!(text_element, TextElement, i, context, {
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// // not(|j| {
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// // // tood
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// // (context.fail_matcher)(j)
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// // })(i)?;
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// // not(|i| (context.fail_matcher)(i))(i)?;
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// alt((
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// // map(
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// // BoldParser::new(slf.context.fail_matcher.clone()),
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// // TextElement::Bold,
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// // ),
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// // map(
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// // LinkParser::new(slf.context.fail_matcher.clone()),
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// // TextElement::Link,
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// // ),
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// map(span, TextElement::Span),
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// map(symbol("*"), TextElement::Symbol),
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// map(symbol("["), TextElement::Symbol),
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// map(symbol("]"), TextElement::Symbol),
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// map(space, TextElement::Space),
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// map(line_break, TextElement::LineBreak),
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// ))(i)
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// });
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pub trait ParserWithContext {
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fn bind_context<'a, 'c>(
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&mut self,
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context: &mut NomContext<'c, &'a str, &'a str, VerboseError<&'a str>>,
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) -> Box<dyn FnMut(&'a str) -> IResult<&'a str, &'a str, VerboseError<&'a str>>>;
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}
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impl<F> ParserWithContext for F
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where
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F: for<'a, 'c> FnMut(
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&'a str,
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&mut NomContext<'c, &'a str, &'a str, VerboseError<&'a str>>,
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) -> Res<&'a str, TextElement<'a>>,
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{
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fn bind_context<'c>(
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&mut self,
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context: &mut NomContext<'c, &str, &str, VerboseError<&str>>,
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) -> Box<
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(dyn for<'a> FnMut(&'a str) -> Result<(&'a str, &'a str), nom::Err<VerboseError<&'a str>>>
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+ 'static),
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> {
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Box::new(|i| self.call_mut((i, context)))
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}
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}
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pub fn flat_text_element<'a, 'c>(
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i: &'a str,
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context: &mut NomContext<'c, &'a str, &'a str, VerboseError<&'a str>>,
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) -> Res<&'a str, TextElement<'a>> {
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// not(context.fail_matcher)(i)?;
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// todo
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todo!()
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}
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