| // Copyright (C) 2009 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.eclipse.jgit.diff; |
| |
| import com.google.gson.JsonArray; |
| import com.google.gson.JsonDeserializationContext; |
| import com.google.gson.JsonDeserializer; |
| import com.google.gson.JsonElement; |
| import com.google.gson.JsonNull; |
| import com.google.gson.JsonParseException; |
| import com.google.gson.JsonPrimitive; |
| import com.google.gson.JsonSerializationContext; |
| import com.google.gson.JsonSerializer; |
| |
| import java.lang.reflect.Type; |
| |
| public class EditDeserializer implements JsonDeserializer<Edit>, |
| JsonSerializer<Edit> { |
| public Edit deserialize(final JsonElement json, final Type typeOfT, |
| final JsonDeserializationContext context) throws JsonParseException { |
| if (json.isJsonNull()) { |
| return null; |
| } |
| if (!json.isJsonArray()) { |
| throw new JsonParseException("Expected array of 4for Edit type"); |
| } |
| |
| final JsonArray a = (JsonArray) json; |
| if (a.size() != 4) { |
| throw new JsonParseException("Expected array of 4 for Edit type"); |
| } |
| return new Edit(get(a, 0), get(a, 1), get(a, 2), get(a, 3)); |
| } |
| |
| private static int get(final JsonArray a, final int idx) |
| throws JsonParseException { |
| final JsonElement v = a.get(idx); |
| if (!v.isJsonPrimitive()) { |
| throw new JsonParseException("Expected array of 4 for Edit type"); |
| } |
| final JsonPrimitive p = (JsonPrimitive) v; |
| if (!p.isNumber()) { |
| throw new JsonParseException("Expected array of 4 for Edit type"); |
| } |
| return p.getAsInt(); |
| } |
| |
| public JsonElement serialize(final Edit src, final Type typeOfSrc, |
| final JsonSerializationContext context) { |
| if (src == null) { |
| return new JsonNull(); |
| } |
| final JsonArray a = new JsonArray(); |
| a.add(new JsonPrimitive(src.getBeginA())); |
| a.add(new JsonPrimitive(src.getEndA())); |
| a.add(new JsonPrimitive(src.getBeginB())); |
| a.add(new JsonPrimitive(src.getEndB())); |
| return a; |
| } |
| } |