From 63f32ab461f7264628fd4c58d5db4b1a7a3f9b2a Mon Sep 17 00:00:00 2001
From: puripuri2100 <puripuri2100@gmail.com>
Date: Thu, 9 May 2024 14:40:58 +0900
Subject: [PATCH] add ord trait for date

---
 jplaw_data_types/src/law.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/jplaw_data_types/src/law.rs b/jplaw_data_types/src/law.rs
index e13cf05..526503a 100644
--- a/jplaw_data_types/src/law.rs
+++ b/jplaw_data_types/src/law.rs
@@ -63,6 +63,20 @@ impl Date {
   }
 }
 
+impl PartialOrd for Date {
+  fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+    Some(self.cmp(other))
+  }
+}
+
+impl Ord for Date {
+  fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+    let s = self.get_ad() * 10000 + self.month.unwrap_or(0) * 100 + self.day.unwrap_or(0);
+    let o = other.get_ad() * 10000 + other.month.unwrap_or(0) * 100 + other.day.unwrap_or(0);
+    s.cmp(&o)
+  }
+}
+
 /// 法律の立法の種類
 #[derive(Debug, Clone, Hash, PartialEq, Eq, Serialize, Deserialize)]
 pub enum RippouType {