tests/example_time.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2004-2008 Jean Privat <jean@pryen.org>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # This module show an example of universal accessors
  18 # Remark: implicit accessors are not used here
  19
  20 # The Time class represents a quantity of time
  21 class Time
  22         # Internally, the quantity of time is stored in minutes
  23         readable writable attr _min: Int
  24
  25         # The quantity ot time (in hours)
  26         meth hour: Int
  27         do
  28                 # Need to transform minutes in hours
  29                 return _min / 60
  30         end
  31
  32         # Set the quantity of time (in hour)
  33         meth hour=(i: Int)
  34         do
  35                 # Need to transform hours in minutes
  36                 _min = i * 60
  37         end
  38
  39         # The quantity of tyme in human readable form (h:m)
  40         redef meth to_s: String
  41         do
  42                 var s = hour.to_s               # Get the h
  43                 s.add(':')
  44                 s.append((_min % 60).to_s)      # Append the m
  45                 return s
  46         end
  47
  48
  49         # A null quantity of time
  50         init
  51         do
  52         end
  53 end # class Time
  54
  55
  56 # Main part
  57
  58 var t = new Time
  59 # Everything is 0
  60 printn("time: ", t, " - min: ", t.min, " - hour: ", t.hour, "\n")
  61
  62 # Syntaxic sugar is good
  63 t.min = 1600
  64 printn("time: ", t, " - min: ", t.min, " - hour: ", t.hour, "\n")
  65
  66 t.hour = 50
  67 printn("time: ", t, " - min: ", t.min, " - hour: ", t.hour, "\n")