113 lines
3.8 KiB
Rust
113 lines
3.8 KiB
Rust
use nom::branch::alt;
|
|
use nom::bytes::complete::tag;
|
|
use nom::bytes::complete::tag_no_case;
|
|
use nom::bytes::complete::take_while;
|
|
use nom::character::complete::line_ending;
|
|
use nom::character::complete::space0;
|
|
use nom::combinator::eof;
|
|
use nom::combinator::not;
|
|
use nom::combinator::recognize;
|
|
use nom::multi::many_till;
|
|
use nom::sequence::tuple;
|
|
|
|
use super::org_source::OrgSource;
|
|
use super::Context;
|
|
use crate::error::CustomError;
|
|
use crate::error::MyError;
|
|
use crate::error::Res;
|
|
use crate::parser::element_parser::element;
|
|
use crate::parser::exiting::ExitClass;
|
|
use crate::parser::parser_context::ContextElement;
|
|
use crate::parser::parser_context::ExitMatcherNode;
|
|
use crate::parser::parser_with_context::parser_with_context;
|
|
use crate::parser::source::SetSource;
|
|
use crate::parser::util::blank_line;
|
|
use crate::parser::util::exit_matcher_parser;
|
|
use crate::parser::util::get_consumed;
|
|
use crate::parser::util::immediate_in_section;
|
|
use crate::parser::util::start_of_line;
|
|
use crate::parser::util::WORD_CONSTITUENT_CHARACTERS;
|
|
use crate::parser::Drawer;
|
|
use crate::parser::Element;
|
|
use crate::parser::Paragraph;
|
|
|
|
#[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
|
|
pub fn drawer<'r, 's>(
|
|
context: Context<'r, 's>,
|
|
input: OrgSource<'s>,
|
|
) -> Res<OrgSource<'s>, Drawer<'s>> {
|
|
if immediate_in_section(context, "drawer") {
|
|
return Err(nom::Err::Error(CustomError::MyError(MyError(
|
|
"Cannot nest objects of the same element".into(),
|
|
))));
|
|
}
|
|
start_of_line(input)?;
|
|
let (remaining, _leading_whitespace) = space0(input)?;
|
|
let (remaining, (_open_colon, drawer_name, _close_colon, _new_line)) = tuple((
|
|
tag(":"),
|
|
name,
|
|
tag(":"),
|
|
recognize(tuple((space0, line_ending))),
|
|
))(remaining)?;
|
|
|
|
let parser_context = context
|
|
.with_additional_node(ContextElement::ConsumeTrailingWhitespace(true))
|
|
.with_additional_node(ContextElement::Context("drawer"))
|
|
.with_additional_node(ContextElement::ExitMatcherNode(ExitMatcherNode {
|
|
class: ExitClass::Alpha,
|
|
exit_matcher: &drawer_end,
|
|
}));
|
|
|
|
let element_matcher = parser_with_context!(element(true))(&parser_context);
|
|
let exit_matcher = parser_with_context!(exit_matcher_parser)(&parser_context);
|
|
let (remaining, children) = match tuple((
|
|
not(exit_matcher),
|
|
blank_line,
|
|
many_till(blank_line, exit_matcher),
|
|
))(remaining)
|
|
{
|
|
Ok((remain, (_not_immediate_exit, first_line, (_trailing_whitespace, _exit_contents)))) => {
|
|
let mut element = Element::Paragraph(Paragraph::of_text(first_line.into()));
|
|
let source = get_consumed(remaining, remain);
|
|
element.set_source(source.into());
|
|
(remain, vec![element])
|
|
}
|
|
Err(_) => {
|
|
let (remaining, (children, _exit_contents)) =
|
|
many_till(element_matcher, exit_matcher)(remaining)?;
|
|
(remaining, children)
|
|
}
|
|
};
|
|
let (remaining, _end) = drawer_end(&parser_context, remaining)?;
|
|
|
|
let source = get_consumed(input, remaining);
|
|
|
|
Ok((
|
|
remaining,
|
|
Drawer {
|
|
source: source.into(),
|
|
name: drawer_name.into(),
|
|
children,
|
|
},
|
|
))
|
|
}
|
|
|
|
#[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
|
|
fn name<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, OrgSource<'s>> {
|
|
take_while(|c| WORD_CONSTITUENT_CHARACTERS.contains(c) || "-_".contains(c))(input)
|
|
}
|
|
|
|
#[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
|
|
fn drawer_end<'r, 's>(
|
|
_context: Context<'r, 's>,
|
|
input: OrgSource<'s>,
|
|
) -> Res<OrgSource<'s>, OrgSource<'s>> {
|
|
start_of_line(input)?;
|
|
recognize(tuple((
|
|
space0,
|
|
tag_no_case(":end:"),
|
|
space0,
|
|
alt((line_ending, eof)),
|
|
)))(input)
|
|
}
|