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    • discord4j.common.jackson.UnsignedLongDeserializer Maven / Gradle / Ivy

    /*
 * This file is part of Discord4J.
 *
 * Discord4J is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Discord4J is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Discord4J.  If not, see .
 */
package discord4j.common.jackson;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.deser.ContextualDeserializer;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;

import java.io.IOException;

public class UnsignedLongDeserializer extends StdDeserializer implements ContextualDeserializer { // 

    public UnsignedLongDeserializer() {
        super(Object.class);
    }

    private UnsignedLongDeserializer(JavaType type) {
        super(type);
    }

    @Override
    public JsonDeserializer createContextual(DeserializationContext ctxt, BeanProperty property) {
        return new UnsignedLongDeserializer(property.getType());
    }

    @Override
    public Object deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
        Class type = handledType();
        if (type.equals(long.class) || type.equals(Long.class)) {
            return Long.parseUnsignedLong(p.getValueAsString());
        } else if (type.equals(long[].class)) {
            String[] ary = p.readValueAs(String[].class);
            long[] ret = new long[ary.length];
            for (int i = 0; i < ary.length; i++) {
                ret[i] = Long.parseUnsignedLong(ary[i]);
            }
            return ret;
        }

        throw new IllegalStateException("Attempt to deserialize field marked with @UnsignedJson which is not of type" +
                " Long | long[]: " + type.getSimpleName());
    }
}
    
    
    
    

    




    
    
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