Add support for month and year frequency

1 files changed, 29 insertions, 1 deletions

diff --git a/src/date.rs b/src/date.rs
index b703766..f77b5d5 100644
--- a/src/date.rs
+++ b/src/date.rs
@@ -4,7 +4,7 @@ use std::ops::Add;
 use errors::EventError;
 
 use chrono;
-use chrono::{TimeZone, Duration};
+use chrono::{TimeZone, Duration, Datelike};
 use chrono::offset::Utc;
 use chrono_tz::{Tz, UTC};
 
@@ -64,6 +64,34 @@ impl Date {
         };
         Ok(date)
     }
+
+    pub fn month(&self) -> u32 {
+        match *self {
+            Date::Time(t) => t.month(),
+            Date::AllDay(d) => d.month(),
+        }
+    }
+
+    pub fn with_month(&self, month: u32) -> Option<Date> {
+        Some(match *self {
+            Date::Time(t) => Date::Time(t.with_month(month)?),
+            Date::AllDay(d) => Date::AllDay(d.with_month(month)?),
+        })
+    }
+
+    pub fn year(&self) -> i32 {
+        match *self {
+            Date::Time(t) => t.year(),
+            Date::AllDay(d) => d.year(),
+        }
+    }
+
+    pub fn with_year(&self, year: i32) -> Option<Date> {
+        Some(match *self {
+            Date::Time(t) => Date::Time(t.with_year(year)?),
+            Date::AllDay(d) => Date::AllDay(d.with_year(year)?),
+        })
+    }
 }
 
 impl Ord for Date {