51 lines
1.6 KiB
Rust
51 lines
1.6 KiB
Rust
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use nom::branch::alt;
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use nom::bytes::complete::tag;
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use nom::bytes::complete::tag_no_case;
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use nom::character::complete::satisfy;
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use nom::character::complete::space0;
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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 super::Context;
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use crate::error::Res;
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use crate::parser::object::Entity;
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use crate::parser::parser_with_context::parser_with_context;
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use crate::parser::util::get_consumed;
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#[tracing::instrument(ret, level = "debug")]
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pub fn entity<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, Entity<'s>> {
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let (remaining, _) = tag("\\")(input)?;
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let (remaining, entity_name) = name(context, remaining)?;
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let (remaining, _) = alt((
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tag("{}"),
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peek(recognize(parser_with_context!(entity_end)(context))),
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))(remaining)?;
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let (remaining, _) = space0(remaining)?;
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let source = get_consumed(input, remaining);
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Ok((
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remaining,
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Entity {
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source,
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entity_name,
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},
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))
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}
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#[tracing::instrument(ret, level = "debug")]
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fn name<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> {
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// TODO: This should be defined by org-entities and optionally org-entities-user
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// TODO: Add the rest of the entities, this is a very incomplete list
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let (remaining, proto) = alt((alt((tag_no_case("delta"), tag_no_case("pi"))),))(input)?;
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Ok((remaining, proto))
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}
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#[tracing::instrument(ret, level = "debug")]
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fn entity_end<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, ()> {
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let (remaining, _) = alt((eof, recognize(satisfy(|c| !c.is_alphabetic()))))(input)?;
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Ok((remaining, ()))
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}
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