Feature/source schedulefields

src/lib.rs

@@ -42,6 +42,11 @@ extern crate chrono_tz;
 pub mod error;
 mod schedule;
 mod time_unit;
+mod ordinal;
+mod specifier;
+mod queries;
+mod parsing;
 
 pub use crate::schedule::Schedule;
+pub use crate::schedule::ScheduleFields;
 pub use crate::time_unit::TimeUnitSpec;

src/ordinal.rs

@@ -0,0 +1,8 @@
+use std::collections::BTreeSet;
+
+pub type Ordinal = u32;
+// TODO: Make OrdinalSet an enum.
+// It should either be a BTreeSet of ordinals or an `All` option to save space.
+// `All` can iterate from inclusive_min to inclusive_max and answer membership
+// queries
+pub type OrdinalSet = BTreeSet<Ordinal>;