tests/test_deserialization.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2014 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 import serialization
  18 import json_serialization
  19
  20 # Simple class
  21 class A
  22         auto_serializable
  23         super Serializable
  24
  25         var b: Bool
  26         var f: Float
  27         var i: Int
  28         var s: String
  29         var n: nullable Int
  30
  31         init(b: Bool, c: Char, f: Float, i: Int, s: String, n: nullable Int)
  32         do
  33                 self.b = b
  34                 self.f = f
  35                 self.i = i
  36                 self.s = s
  37         end
  38
  39         redef fun to_s do return "<A: {b} {f} {i} {s} {n != null}>"
  40 end
  41
  42 # Sub-class of A
  43 class B
  44         auto_serializable
  45         super A
  46
  47         var ii: Int
  48         var ss: String
  49
  50         init(b: Bool, c: Char, f: Float, i: Int, s: String, n: nullable Int, ii: Int, ss: String)
  51         do
  52                 super(b, c, f, i, s, n)
  53
  54                 self.ii = ii
  55                 self.ss = ss
  56         end
  57
  58         redef fun to_s do return "<B: {super} {ii} {ss}>"
  59 end
  60
  61 # Composed of an A and a B
  62 class C
  63         auto_serializable
  64         super Serializable
  65
  66         var a: A
  67         var b: B
  68         var aa: A
  69
  70         init(a: A, b: B)
  71         do
  72                 self.a = a
  73                 self.b = b
  74                 self.aa = a
  75         end
  76
  77         redef fun to_s do return "<C: {a} {b}>"
  78 end
  79
  80 # Class with cyclic reference
  81 class D
  82         auto_serializable
  83         super B
  84
  85         var d: nullable D = null
  86
  87         redef fun to_s do return "<D: {super} {d != null}>"
  88 end
  89
  90 var a = new A(true, 'a', 0.1234, 1234, "asdf", null)
  91 var b = new B(false, 'b', 123.123, 2345, "hjkl", 12, 1111, "qwer")
  92 var c = new C(a, b)
  93 var d = new D(false, 'b', 123.123, 2345, "new line ->\n<-", null, 1111, "\t\f\"\r\\/")
  94 d.d = d
  95
  96 for o in new Array[nullable Serializable].with_items(a, b, c, d) do
  97         var stream = new StringOStream
  98         var serializer = new JsonSerializer(stream)
  99         serializer.serialize(o)
 100
 101         var deserializer = new JsonDeserializer(stream.to_s)
 102         var deserialized = deserializer.deserialize
 103
 104         print "# Nit:\n{o}\n"
 105         print "# Json:\n{stream}\n"
 106         print "# Back in Nit:\n{deserialized}\n"
 107 end