organic/src/parser/text_element_parser.rs

//! A single element of text.
use crate::parser::parser_with_context::parser_with_context;
use crate::parser::text::paragraph_end;

use super::nom_context::NomContext;
use super::text::line_break;
use super::text::space;
use super::text::span;
use super::text::symbol;
use super::text::Res;
use super::text::TextElement;
use nom::branch::alt;
use nom::combinator::map;
use nom::combinator::not;
use nom::error::VerboseError;
use nom::multi::many_till;
use nom::IResult;

pub fn flat_text_element<'a, F>(
    i: &'a str,
    context: &mut NomContext<F>,
) -> Res<&'a str, TextElement<'a>>
where
    F: for<'b> FnMut(&'b str) -> IResult<&'b str, &'b str, VerboseError<&'b str>>,
{
    not(&mut context.fail_matcher)(i)?;
    alt((
        // map(
        //     BoldParser::new(slf.context.fail_matcher.clone()),
        //     TextElement::Bold,
        // ),
        // map(
        //     LinkParser::new(slf.context.fail_matcher.clone()),
        //     TextElement::Link,
        // ),
        map(span, TextElement::Span),
        map(symbol("*"), TextElement::Symbol),
        map(symbol("["), TextElement::Symbol),
        map(symbol("]"), TextElement::Symbol),
        map(space, TextElement::Space),
        map(line_break, TextElement::LineBreak),
    ))(i)
}

pub fn paragraph(input: &str) -> Res<&str, (Vec<TextElement>, &str)> {
    let initial_context = NomContext::new(&paragraph_end);
    let text_element_parser = parser_with_context!(flat_text_element)(initial_context);
    many_till(text_element_parser, paragraph_end)(input)
}