85 lines
3.0 KiB
Rust
85 lines
3.0 KiB
Rust
use super::error::Res;
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use super::footnote_definition::footnote_definition;
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use super::greater_block::greater_block;
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use super::greater_element::FootnoteDefinition;
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use super::greater_element::GreaterBlock;
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use super::greater_element::PlainList;
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use super::lesser_element::Paragraph;
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use super::paragraph::paragraph;
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use super::plain_list::plain_list;
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use super::source::Source;
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use super::Context;
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use crate::parser::parser_context::ContextElement;
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use crate::parser::parser_with_context::parser_with_context;
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use nom::branch::alt;
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use nom::combinator::map;
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#[derive(Debug)]
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pub enum Element<'s> {
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Paragraph(Paragraph<'s>),
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PlainList(PlainList<'s>),
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GreaterBlock(GreaterBlock<'s>),
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FootnoteDefinition(FootnoteDefinition<'s>),
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/// The whitespace that follows an element.
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///
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/// This isn't a real org-mode element. Except for items in plain lists, trailing blank lines belong to the preceding element. It is a separate `Element` in this enum to make parsing easier.
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TrailingWhitespace(&'s str),
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}
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impl<'s> Source<'s> for Element<'s> {
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fn get_source(&'s self) -> &'s str {
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match self {
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Element::Paragraph(obj) => obj.source,
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Element::PlainList(obj) => obj.source,
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Element::GreaterBlock(obj) => obj.source,
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Element::TrailingWhitespace(src) => src,
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Element::FootnoteDefinition(obj) => obj.source,
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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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pub fn element_with_whitespace<'r, 's>(
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context: Context<'r, 's>,
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input: &'s str,
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) -> Res<&'s str, Element<'s>> {
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let parser_context =
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context.with_additional_node(ContextElement::ConsumeTrailingWhitespace(true));
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element(&parser_context, input)
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}
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#[tracing::instrument(ret, level = "debug")]
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pub fn element_without_whitespace<'r, 's>(
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context: Context<'r, 's>,
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input: &'s str,
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) -> Res<&'s str, Element<'s>> {
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let parser_context =
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context.with_additional_node(ContextElement::ConsumeTrailingWhitespace(false));
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element(&parser_context, input)
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}
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#[tracing::instrument(ret, level = "debug")]
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pub fn element<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, Element<'s>> {
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let non_paragraph_matcher = parser_with_context!(non_paragraph_element)(context);
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let paragraph_matcher = parser_with_context!(paragraph)(context);
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alt((
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non_paragraph_matcher,
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map(paragraph_matcher, Element::Paragraph),
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))(input)
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}
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pub fn non_paragraph_element<'r, 's>(
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context: Context<'r, 's>,
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input: &'s str,
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) -> Res<&'s str, Element<'s>> {
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let plain_list_matcher = parser_with_context!(plain_list)(context);
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let greater_block_matcher = parser_with_context!(greater_block)(context);
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let footnote_definition_matcher = parser_with_context!(footnote_definition)(context);
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alt((
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map(plain_list_matcher, Element::PlainList),
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map(greater_block_matcher, Element::GreaterBlock),
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map(footnote_definition_matcher, Element::FootnoteDefinition),
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))(input)
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}
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