54 lines
2.0 KiB
Rust
54 lines
2.0 KiB
Rust
use nom::branch::alt;
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use nom::combinator::eof;
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use nom::combinator::peek;
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use nom::combinator::recognize;
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use nom::combinator::verify;
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use nom::multi::many1;
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use nom::multi::many_till;
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use nom::sequence::tuple;
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use crate::parser::object::standard_set_object;
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use crate::parser::parser_context::ChainBehavior;
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use crate::parser::parser_context::ContextElement;
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use crate::parser::parser_context::ExitMatcherNode;
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use crate::parser::parser_with_context::parser_with_context;
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use crate::parser::util::exit_matcher_parser;
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use crate::parser::util::start_of_line;
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use super::element::non_paragraph_element;
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use super::error::Res;
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use super::lesser_element::Paragraph;
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use super::util::blank_line;
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use super::util::get_consumed;
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use super::Context;
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#[tracing::instrument(ret, level = "debug")]
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pub fn paragraph<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, Paragraph<'s>> {
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let parser_context =
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context.with_additional_node(ContextElement::ExitMatcherNode(ExitMatcherNode {
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exit_matcher: ChainBehavior::AndParent(Some(¶graph_end)),
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}));
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let standard_set_object_matcher = parser_with_context!(standard_set_object)(&parser_context);
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let exit_matcher = parser_with_context!(exit_matcher_parser)(&parser_context);
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let (remaining, (children, _exit_contents)) = verify(
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many_till(standard_set_object_matcher, peek(recognize(exit_matcher))),
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|(children, _exit_contents)| !children.is_empty(),
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)(input)?;
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let source = get_consumed(input, remaining);
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Ok((remaining, Paragraph { source, children }))
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}
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#[tracing::instrument(ret, level = "debug")]
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fn paragraph_end<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> {
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let non_paragraph_element_matcher = parser_with_context!(non_paragraph_element)(context);
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let start_of_line_matcher = parser_with_context!(start_of_line)(&context);
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alt((
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recognize(tuple((start_of_line_matcher, many1(blank_line)))),
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recognize(non_paragraph_element_matcher),
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eof,
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))(input)
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}
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