52 lines
1.7 KiB
Rust
52 lines
1.7 KiB
Rust
use nom::branch::alt;
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use nom::bytes::complete::is_not;
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use nom::bytes::complete::tag;
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use nom::character::complete::line_ending;
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use nom::character::complete::space0;
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use nom::character::complete::space1;
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use nom::combinator::eof;
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use nom::combinator::not;
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use nom::combinator::opt;
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use nom::multi::many0;
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use nom::sequence::preceded;
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use nom::sequence::tuple;
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use super::Context;
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use crate::error::Res;
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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::get_consumed;
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use crate::parser::util::start_of_line;
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use crate::parser::FixedWidthArea;
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#[tracing::instrument(ret, level = "debug")]
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pub fn fixed_width_area<'r, 's>(
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context: Context<'r, 's>,
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input: &'s str,
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) -> Res<&'s str, FixedWidthArea<'s>> {
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let fixed_width_area_line_matcher = parser_with_context!(fixed_width_area_line)(context);
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let exit_matcher = parser_with_context!(exit_matcher_parser)(context);
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let (remaining, _first_line) = fixed_width_area_line_matcher(input)?;
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let (remaining, _remaining_lines) =
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many0(preceded(not(exit_matcher), fixed_width_area_line_matcher))(remaining)?;
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let source = get_consumed(input, remaining);
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Ok((remaining, FixedWidthArea { source }))
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}
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#[tracing::instrument(ret, level = "debug")]
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fn fixed_width_area_line<'r, 's>(
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context: Context<'r, 's>,
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input: &'s str,
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) -> Res<&'s str, &'s str> {
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start_of_line(context, input)?;
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let (remaining, _indent) = space0(input)?;
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let (remaining, (_hash, _leading_whitespace_and_content, _line_ending)) = tuple((
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tag(":"),
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opt(tuple((space1, is_not("\r\n")))),
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alt((line_ending, eof)),
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))(remaining)?;
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let source = get_consumed(input, remaining);
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Ok((remaining, source))
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}
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