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-rw-r--r--jni/ruby/ext/date/lib/date.rb60
1 files changed, 60 insertions, 0 deletions
diff --git a/jni/ruby/ext/date/lib/date.rb b/jni/ruby/ext/date/lib/date.rb
new file mode 100644
index 0000000..4268661
--- /dev/null
+++ b/jni/ruby/ext/date/lib/date.rb
@@ -0,0 +1,60 @@
+# date.rb: Written by Tadayoshi Funaba 1998-2011
+
+require 'date_core'
+
+class Date
+
+ class Infinity < Numeric # :nodoc:
+
+ include Comparable
+
+ def initialize(d=1) @d = d <=> 0 end
+
+ def d() @d end
+
+ protected :d
+
+ def zero? () false end
+ def finite? () false end
+ def infinite? () d.nonzero? end
+ def nan? () d.zero? end
+
+ def abs() self.class.new end
+
+ def -@ () self.class.new(-d) end
+ def +@ () self.class.new(+d) end
+
+ def <=> (other)
+ case other
+ when Infinity; return d <=> other.d
+ when Numeric; return d
+ else
+ begin
+ l, r = other.coerce(self)
+ return l <=> r
+ rescue NoMethodError
+ end
+ end
+ nil
+ end
+
+ def coerce(other)
+ case other
+ when Numeric; return -d, d
+ else
+ super
+ end
+ end
+
+ def to_f
+ return 0 if @d == 0
+ if @d > 0
+ Float::INFINITY
+ else
+ -Float::INFINITY
+ end
+ end
+
+ end
+
+end