organic/src/parser/radio_link.rs
2023-04-24 19:18:38 -04:00

59 lines
2.0 KiB
Rust

use nom::branch::alt;
use nom::bytes::complete::tag;
use nom::character::complete::line_ending;
use nom::character::complete::space0;
use nom::combinator::verify;
use nom::multi::many_till;
use super::Context;
use crate::error::CustomError;
use crate::error::MyError;
use crate::error::Res;
use crate::parser::exiting::ExitClass;
use crate::parser::object_parser::minimal_set_object;
use crate::parser::parser_context::ContextElement;
use crate::parser::parser_context::ExitMatcherNode;
use crate::parser::parser_with_context::parser_with_context;
use crate::parser::util::exit_matcher_parser;
use crate::parser::util::get_consumed;
use crate::parser::RadioLink;
use crate::parser::RadioTarget;
#[tracing::instrument(ret, level = "debug")]
pub fn radio_link<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, RadioLink<'s>> {
return Err(nom::Err::Error(CustomError::MyError(MyError(
"Not implemented yet.",
))));
}
#[tracing::instrument(ret, level = "debug")]
pub fn radio_target<'r, 's>(
context: Context<'r, 's>,
input: &'s str,
) -> Res<&'s str, RadioTarget<'s>> {
let (remaining, _opening) = tag("<<<")(input)?;
let parser_context =
context.with_additional_node(ContextElement::ExitMatcherNode(ExitMatcherNode {
class: ExitClass::Beta,
exit_matcher: &radio_target_end,
}));
let (remaining, (children, _exit_contents)) = verify(
many_till(
parser_with_context!(minimal_set_object)(&parser_context),
parser_with_context!(exit_matcher_parser)(&parser_context),
),
|(children, _exit_contents)| !children.is_empty(),
)(remaining)?;
let (remaining, _closing) = tag(">>>")(remaining)?;
let (remaining, _trailing_whitespace) = space0(remaining)?;
let source = get_consumed(input, remaining);
Ok((remaining, RadioTarget { source, children }))
}
#[tracing::instrument(ret, level = "debug")]
fn radio_target_end<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> {
alt((tag("<"), tag(">"), line_ending))(input)
}