Compare timestamp 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::TimestampType;
 pub use object::Underline;
 pub use object::Verbatim;
 pub(crate) use source::SetSource;

src/types/object.rs

@@ -1,6 +1,7 @@
 use super::GetStandardProperties;
 use super::StandardProperties;
 
+// TODO: Why did we make Object implement PartialEq again? Was it just for tests?
 #[derive(Debug, PartialEq)]
 pub enum Object<'s> {
     Bold(Bold<'s>),
@@ -184,6 +185,16 @@ pub struct Superscript<'s> {
 #[derive(Debug, PartialEq)]
 pub struct Timestamp<'s> {
     pub source: &'s str,
+    pub timestamp_type: TimestampType,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum TimestampType {
+    Diary,
+    Active,
+    Inactive,
+    ActiveRange,
+    InactiveRange,
 }
 
 impl<'s> GetStandardProperties<'s> for Object<'s> {