Compare range type.

src/types/mod.rs

@@ -75,6 +75,7 @@ pub use object::Subscript;
 pub use object::Superscript;
 pub use object::Target;
 pub use object::Timestamp;
+pub use object::TimestampRangeType;
 pub use object::TimestampType;
 pub use object::Underline;
 pub use object::Verbatim;

src/types/object.rs

@@ -186,6 +186,7 @@ pub struct Superscript<'s> {
 pub struct Timestamp<'s> {
     pub source: &'s str,
     pub timestamp_type: TimestampType,
+    pub range_type: TimestampRangeType,
 }
 
 #[derive(Debug, PartialEq)]
@@ -197,6 +198,12 @@ pub enum TimestampType {
     InactiveRange,
 }
 
+#[derive(Debug, PartialEq)]
+pub enum TimestampRangeType {
+    None,
+    DateRange,
+}
+
 impl<'s> GetStandardProperties<'s> for Object<'s> {
     fn get_standard_properties<'b>(&'b self) -> &'b dyn StandardProperties<'s> {
         match self {