com.squareup.moshi.internal.NullSafeJsonAdapter Maven / Gradle / Ivy
/*
* Copyright (C) 2019 Square, Inc.
*
* 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 com.squareup.moshi.internal;
import com.jn.langx.annotation.Nullable;
import com.squareup.moshi.JsonAdapter;
import com.squareup.moshi.JsonReader;
import com.squareup.moshi.JsonWriter;
import java.io.IOException;
public final class NullSafeJsonAdapter extends JsonAdapter {
private final JsonAdapter delegate;
public NullSafeJsonAdapter(JsonAdapter delegate) {
this.delegate = delegate;
}
public JsonAdapter delegate() {
return delegate;
}
@Override public @Nullable
T fromJson(JsonReader reader) throws IOException {
if (reader.peek() == JsonReader.Token.NULL) {
return reader.nextNull();
} else {
return delegate.fromJson(reader);
}
}
@Override public void toJson(JsonWriter writer, @Nullable T value) throws IOException {
if (value == null) {
writer.nullValue();
} else {
delegate.toJson(writer, value);
}
}
@Override public String toString() {
return delegate + ".nullSafe()";
}
}