model/model_contract: Move contract model representation
[nit.git] / src / model / serialize_model.nit
1 # This file is part of NIT ( http://www.nitlanguage.org ).
2 #
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
6 #
7 # http://www.apache.org/licenses/LICENSE-2.0
8 #
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
14
15 # Service to serialize `POSet` to JSON
16 module serialize_model
17
18 private import json::serialization_write
19
20 import model
21
22 redef class POSet[E]
23
24 # Serialize `self` to JSON using the `to_s` representation of each item
25 fun to_thin_json: String
26 do
27 var thin_poset = new POSet[String]
28 for e in self do
29 var from = (e or else "null").to_s
30 for g in self[e].direct_greaters do
31 thin_poset.add_edge(from, (g or else "null").to_s)
32 end
33 end
34 return thin_poset.serialize_to_json
35 end
36 end