From 14a44aef2b6fc9771b748d70e6598f95c91057b6 Mon Sep 17 00:00:00 2001
From: Jisoo Park <xxxyel@gmail.com>
Date: Fri, 24 Apr 2015 16:07:34 +0900
Subject: [PATCH] Language update

---
 Cargo.toml            |  2 +-
 src/format/parsed.rs  |  2 +-
 src/lib.rs            | 35 ++++++++++++++++++++++++++++++++++-
 src/naive/date.rs     | 13 ++++++++-----
 src/naive/datetime.rs |  2 +-
 5 files changed, 45 insertions(+), 9 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index ba0ea56..ae2f0c5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,4 +16,4 @@ name = "chrono"
 
 [dependencies]
 time = "*"
-
+num = "*"
diff --git a/src/format/parsed.rs b/src/format/parsed.rs
index 4825b6b..f3ffe3c 100644
--- a/src/format/parsed.rs
+++ b/src/format/parsed.rs
@@ -7,7 +7,7 @@
  * They can be constructed incrementally while being checked for consistency.
  */
 
-use std::num::{Int, ToPrimitive};
+use num::traits::ToPrimitive;
 
 use {Datelike, Timelike};
 use Weekday;
diff --git a/src/lib.rs b/src/lib.rs
index 6c24fc5..6d5f831 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -273,6 +273,7 @@ Advanced time zone handling is not yet supported (but is planned in 0.3).
 #![deny(missing_docs)]
 
 extern crate time as stdtime;
+extern crate num;
 
 pub use duration::Duration;
 pub use offset::{TimeZone, Offset, LocalResult};
@@ -317,7 +318,7 @@ pub mod format;
 ///
 /// The order of the days of week depends on the context.
 /// One should prefer `*_from_monday` or `*_from_sunday` methods to get the correct result.
-#[derive(PartialEq, Eq, Copy, Clone, FromPrimitive, Debug)]
+#[derive(PartialEq, Eq, Copy, Clone, Debug)]
 pub enum Weekday {
     /// Monday.
     Mon = 0,
@@ -421,6 +422,38 @@ impl Weekday {
     }
 }
 
+impl num::traits::FromPrimitive for Weekday {
+
+    #[inline]
+    fn from_i64(n: i64) -> Option<Weekday> {
+        match n {
+            0 => Some(Weekday::Mon),
+            1 => Some(Weekday::Tue),
+            2 => Some(Weekday::Wed),
+            3 => Some(Weekday::Thu),
+            4 => Some(Weekday::Fri),
+            5 => Some(Weekday::Sat),
+            6 => Some(Weekday::Sun),
+            _ => None,
+        }
+    }
+
+    #[inline]
+    fn from_u64(n: u64) -> Option<Weekday> {
+        match n {
+            0 => Some(Weekday::Mon),
+            1 => Some(Weekday::Tue),
+            2 => Some(Weekday::Wed),
+            3 => Some(Weekday::Thu),
+            4 => Some(Weekday::Fri),
+            5 => Some(Weekday::Sat),
+            6 => Some(Weekday::Sun),
+            _ => None,
+        }
+    }
+}
+
+
 /// The common set of methods for date component.
 pub trait Datelike {
     /// Returns the year number.
diff --git a/src/naive/date.rs b/src/naive/date.rs
index 746384c..6531fd9 100644
--- a/src/naive/date.rs
+++ b/src/naive/date.rs
@@ -7,8 +7,8 @@
  */
 
 use std::{str, fmt, hash};
-use std::num::{Int, ToPrimitive};
 use std::ops::{Add, Sub};
+use num::traits::ToPrimitive;
 
 use {Weekday, Datelike};
 use div::div_mod_floor;
@@ -601,7 +601,9 @@ mod tests {
     use {Datelike, Weekday};
     use duration::Duration;
     use std::{i32, u32};
-    use std::iter::{range_inclusive, range_step_inclusive};
+
+     // TODO replace with range notion and adapters
+    use num::iter::{range_inclusive, range_step_inclusive};
 
     #[test]
     fn test_date_from_ymd() {
@@ -1034,7 +1036,8 @@ mod tests {
  */
 #[allow(dead_code)] // some internal methods have been left for consistency
 mod internals {
-    use std::{i32, num, fmt};
+    use std::{i32, fmt};
+    use num::traits::FromPrimitive;
     use Weekday;
     use div::{div_rem, mod_floor};
 
@@ -1351,7 +1354,7 @@ mod internals {
         #[inline]
         pub fn weekday(&self) -> Weekday {
             let Of(of) = *self;
-            num::from_u32(((of >> 4) + (of & 0b111)) % 7).unwrap()
+            Weekday::from_u32(((of >> 4) + (of & 0b111)) % 7).unwrap()
         }
 
         #[inline]
@@ -1359,7 +1362,7 @@ mod internals {
             // week ordinal = ordinal + delta
             let Of(of) = *self;
             let weekord = (of >> 4).wrapping_add(self.flags().isoweek_delta());
-            (weekord / 7, num::from_u32(weekord % 7).unwrap())
+            (weekord / 7, Weekday::from_u32(weekord % 7).unwrap())
         }
 
         #[inline]
diff --git a/src/naive/datetime.rs b/src/naive/datetime.rs
index 3a5d5eb..acecc13 100644
--- a/src/naive/datetime.rs
+++ b/src/naive/datetime.rs
@@ -7,8 +7,8 @@
  */
 
 use std::{str, fmt, hash};
-use std::num::{Int, ToPrimitive};
 use std::ops::{Add, Sub};
+use num::traits::ToPrimitive;
 
 use {Weekday, Timelike, Datelike};
 use div::div_mod_floor;