/* __ __ __ __ __ ___ * \ \ / / \ \ / / __/ * \ \/ / /\ \ \/ / / * \____/__/ \__\____/__/ * * Copyright 2014-2017 Vavr, http://vavr.io * * 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 io.vavr.jackson.datatype.deserialize; import com.fasterxml.jackson.core.JsonParser; import com.fasterxml.jackson.core.JsonToken; import com.fasterxml.jackson.databind.DeserializationContext; import com.fasterxml.jackson.databind.JavaType; import com.fasterxml.jackson.databind.JsonDeserializer; import io.vavr.*; import java.io.IOException; import java.util.ArrayList; import java.util.List; import static com.fasterxml.jackson.core.JsonToken.END_ARRAY; import static com.fasterxml.jackson.core.JsonToken.VALUE_NULL; abstract class TupleDeserializer<T> extends ValueDeserializer<T> { private static final long serialVersionUID = 1L; private final JavaType javaType; TupleDeserializer(JavaType valueType) { super(valueType, arity(valueType)); this.javaType = valueType; } @Override public T deserialize(JsonParser p, DeserializationContext ctxt) throws IOException { List<Object> list = new ArrayList<>(); int ptr = 0; for (JsonToken jsonToken = p.nextToken(); jsonToken != END_ARRAY; jsonToken = p.nextToken()) { if (ptr >= deserializersCount()) { throw mappingException(ctxt, javaType.getRawClass(), jsonToken); } JsonDeserializer<?> deserializer = deserializer(ptr++); Object value = (jsonToken != VALUE_NULL) ? deserializer.deserialize(p, ctxt) : deserializer.getNullValue(ctxt); list.add(value); } if (list.size() == deserializersCount()) { return create(list, ctxt); } else { throw mappingException(ctxt, javaType.getRawClass(), null); } } abstract T create(List<Object> list, DeserializationContext ctxt); private static int arity(JavaType valueType) { Class<?> clz = valueType.getRawClass(); if (clz == Tuple0.class) { return 0; } else if (clz == Tuple1.class) { return 1; } else if (clz == Tuple2.class) { return 2; } else if (clz == Tuple3.class) { return 3; } else if (clz == Tuple4.class) { return 4; } else if (clz == Tuple5.class) { return 5; } else if (clz == Tuple6.class) { return 6; } else if (clz == Tuple7.class) { return 7; } else { return 8; } } }