Add paragraph parser.

src/parser/text_element_parser.rs

@@ -21,10 +21,7 @@ use nom::multi::many_till;
 use nom::sequence::tuple;
 use nom::IResult;
 
-fn flat_text_element<'s, 'r>(
-    i: &'s str,
-    context: &'r mut NomContext,
-) -> Res<&'s str, TextElement<'s>> {
+fn flat_text_element<'s, 'r>(i: &'s str, context: &'r NomContext) -> Res<&'s str, TextElement<'s>> {
     context.not_matching_fail(i)?;
 
     alt((
@@ -36,3 +33,11 @@ fn flat_text_element<'s, 'r>(
         map(line_break, TextElement::LineBreak),
     ))(i)
 }
+
+pub fn paragraph<'s, 'r>(
+    i: &'s str,
+    context: &'r NomContext,
+) -> Res<&'s str, (Vec<TextElement<'s>>, &'s str)> {
+    let text_element_parser = parser_with_context!(flat_text_element)(context);
+    many_till(text_element_parser, paragraph_end)(i)
+}