Add parsers for most of the rest of item.

src/parser/plain_list.rs

@@ -1,8 +1,12 @@
 use nom::branch::alt;
 use nom::bytes::complete::tag;
+use nom::character::complete::anychar;
 use nom::character::complete::digit1;
+use nom::character::complete::line_ending;
 use nom::character::complete::one_of;
+use nom::combinator::not;
 use nom::combinator::recognize;
+use nom::multi::many1;
 use nom::sequence::tuple;
 
 use super::error::Res;
@@ -32,3 +36,28 @@ fn bullet<'s>(i: &'s str) -> Res<&'s str, &'s str> {
         recognize(tuple((counter, alt((tag("."), tag(")")))))),
     ))(i)
 }
+
+fn counter_set<'s>(i: &'s str) -> Res<&'s str, &'s str> {
+    recognize(tuple((tag("[@"), counter, tag("]"))))(i)
+}
+
+fn check_box<'s>(i: &'s str) -> Res<&'s str, &'s str> {
+    recognize(alt((tag("[ ]"), tag("[X]"), tag("[-]"))))(i)
+}
+
+fn item_tag<'s>(i: &'s str) -> Res<&'s str, &'s str> {
+    recognize(tuple((tag_text, tag_separator)))(i)
+}
+
+fn tag_text<'s>(i: &'s str) -> Res<&'s str, &'s str> {
+    recognize(many1(tag_text_character))(i)
+}
+
+fn tag_text_character<'s>(i: &'s str) -> Res<&'s str, &'s str> {
+    not(alt((tag_separator, line_ending)))(i)?;
+    recognize(anychar)(i)
+}
+
+fn tag_separator<'s>(i: &'s str) -> Res<&'s str, &'s str> {
+    tag(" :: ")(i)
+}