tests/test_json.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2012-2013 Alexis Laferrière <alexis.laf@xymus.net>
   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 module test_json
  18
  19 import json
  20
  21 redef class HashMap[K,V]
  22         redef fun to_s
  23         do
  24                 var es = new Array[String]
  25                 for k, v in self do
  26                         if v != null then
  27                                 es.add( "\"{k}\":\"{v}\"" )
  28                         else
  29                                 es.add( "\"{k}\": null" )
  30                         end
  31                 end
  32                 return "\{{es.join(",")}\}"
  33         end
  34 end
  35
  36 redef class String
  37         fun parse_and_display
  38         do
  39                 var json_map = json_to_object
  40                 if json_map != null then
  41                         print json_map
  42                         print json_map.to_json.replace(" ","")
  43
  44                         # only available for libjson0 v0.10
  45                         # print json_map.to_pretty_json
  46                 else
  47                         print "Conversion to json failed."
  48                 end
  49         end
  50 end
  51
  52 fun print_usage do print "Usage: json input.json"
  53
  54 if args.length == 1 then
  55         var input_path = args.first
  56         var input_file = new IFStream.open( input_path )
  57         var input_text = input_file.read_all
  58         input_file.close
  59
  60         input_text.parse_and_display
  61 else
  62         var s = "\{\"int\":1234, \"float\":0.1234, \"str\":\"str\", \"null\":null\}"
  63         s.parse_and_display
  64
  65         s = "\{\"arr\":[1,2,3], \"obj\":\{\"int\":123, \"float\":-234.45\}\}"
  66         s.parse_and_display
  67
  68         s = "\{\"arr\":[1,2.3,null,\"str\"], \"obj\":\{\"int\":123, \"float\":-234.45\}\}"
  69         s.parse_and_display
  70 end