Code structure for keyword.

org_mode_samples/keyword/simple.org

@@ -0,0 +1,2 @@
+#+FOO: BAR
+#+LOREM: IPSUM

src/compare/diff.rs

@@ -17,6 +17,7 @@ use crate::parser::FootnoteDefinition;
 use crate::parser::GreaterBlock;
 use crate::parser::Heading;
 use crate::parser::HorizontalRule;
+use crate::parser::Keyword;
 use crate::parser::Paragraph;
 use crate::parser::PlainList;
 use crate::parser::PlainListItem;
@@ -223,6 +224,7 @@ fn compare_element<'s>(
         Element::Planning(obj) => compare_planning(source, emacs, obj),
         Element::FixedWidthArea(obj) => compare_fixed_width_area(source, emacs, obj),
         Element::HorizontalRule(obj) => compare_horizontal_rule(source, emacs, obj),
+        Element::Keyword(obj) => compare_keyword(source, emacs, obj),
     }
 }
 
@@ -804,3 +806,27 @@ fn compare_horizontal_rule<'s>(
         children: child_status,
     })
 }
+
+fn compare_keyword<'s>(
+    source: &'s str,
+    emacs: &'s Token<'s>,
+    rust: &'s Keyword<'s>,
+) -> Result<DiffResult, Box<dyn std::error::Error>> {
+    let child_status = Vec::new();
+    let mut this_status = DiffStatus::Good;
+    let emacs_name = "keyword";
+    if assert_name(emacs, emacs_name).is_err() {
+        this_status = DiffStatus::Bad;
+    }
+
+    if assert_bounds(source, emacs, rust).is_err() {
+        this_status = DiffStatus::Bad;
+    }
+
+    Ok(DiffResult {
+        status: this_status,
+        name: emacs_name.to_owned(),
+        message: None,
+        children: child_status,
+    })
+}

src/parser/element.rs

@@ -12,6 +12,7 @@ use super::lesser_element::ExampleBlock;
 use super::lesser_element::ExportBlock;
 use super::lesser_element::FixedWidthArea;
 use super::lesser_element::HorizontalRule;
+use super::lesser_element::Keyword;
 use super::lesser_element::Paragraph;
 use super::lesser_element::Planning;
 use super::lesser_element::SrcBlock;
@@ -40,6 +41,7 @@ pub enum Element<'s> {
     Planning(Planning<'s>),
     FixedWidthArea(FixedWidthArea<'s>),
     HorizontalRule(HorizontalRule<'s>),
+    Keyword(Keyword<'s>),
 }
 
 impl<'s> Source<'s> for Element<'s> {
@@ -64,6 +66,7 @@ impl<'s> Source<'s> for Element<'s> {
             Element::Planning(obj) => obj.source,
             Element::FixedWidthArea(obj) => obj.source,
             Element::HorizontalRule(obj) => obj.source,
+            Element::Keyword(obj) => obj.source,
         }
     }
 }

src/parser/element_parser.rs

@@ -8,6 +8,7 @@ use super::fixed_width_area::fixed_width_area;
 use super::footnote_definition::footnote_definition;
 use super::greater_block::greater_block;
 use super::horizontal_rule::horizontal_rule;
+use super::keyword::keyword;
 use super::lesser_block::comment_block;
 use super::lesser_block::example_block;
 use super::lesser_block::export_block;
@@ -53,6 +54,7 @@ pub fn non_paragraph_element<'r, 's>(
     let diary_sexp_matcher = parser_with_context!(diary_sexp)(context);
     let fixed_width_area_matcher = parser_with_context!(fixed_width_area)(context);
     let horizontal_rule_matcher = parser_with_context!(horizontal_rule)(context);
+    let keyword_matcher = parser_with_context!(keyword)(context);
     alt((
         map(plain_list_matcher, Element::PlainList),
         map(greater_block_matcher, Element::GreaterBlock),
@@ -70,5 +72,6 @@ pub fn non_paragraph_element<'r, 's>(
         map(diary_sexp_matcher, Element::DiarySexp),
         map(fixed_width_area_matcher, Element::FixedWidthArea),
         map(horizontal_rule_matcher, Element::HorizontalRule),
+        map(keyword_matcher, Element::Keyword),
     ))(input)
 }

src/parser/keyword.rs

@@ -0,0 +1,26 @@
+use nom::branch::alt;
+use nom::bytes::complete::tag;
+use nom::character::complete::line_ending;
+use nom::character::complete::space0;
+use nom::combinator::eof;
+use nom::combinator::recognize;
+use nom::combinator::verify;
+use nom::multi::many1_count;
+use nom::sequence::tuple;
+
+use super::Context;
+use crate::error::Res;
+use crate::parser::util::start_of_line;
+use crate::parser::Keyword;
+
+#[tracing::instrument(ret, level = "debug")]
+pub fn keyword<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, Keyword<'s>> {
+    start_of_line(context, input)?;
+    let (remaining, rule) = recognize(tuple((
+        space0,
+        verify(many1_count(tag("-")), |dashes| *dashes >= 5),
+        space0,
+        alt((line_ending, eof)),
+    )))(input)?;
+    Ok((remaining, Keyword { source: rule }))
+}

src/parser/lesser_element.rs

@@ -84,6 +84,11 @@ pub struct HorizontalRule<'s> {
     pub source: &'s str,
 }
 
+#[derive(Debug)]
+pub struct Keyword<'s> {
+    pub source: &'s str,
+}
+
 impl<'s> Paragraph<'s> {
     pub fn of_text(input: &'s str) -> Self {
         let mut objects = Vec::with_capacity(1);
@@ -168,3 +173,9 @@ impl<'s> Source<'s> for HorizontalRule<'s> {
         self.source
     }
 }
+
+impl<'s> Source<'s> for Keyword<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}

src/parser/mod.rs

@@ -12,6 +12,7 @@ mod footnote_definition;
 mod greater_block;
 mod greater_element;
 mod horizontal_rule;
+mod keyword;
 mod lesser_block;
 mod lesser_element;
 mod list;
@@ -51,6 +52,7 @@ pub use lesser_element::ExampleBlock;
 pub use lesser_element::ExportBlock;
 pub use lesser_element::FixedWidthArea;
 pub use lesser_element::HorizontalRule;
+pub use lesser_element::Keyword;
 pub use lesser_element::Paragraph;
 pub use lesser_element::Planning;
 pub use lesser_element::SrcBlock;