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/*
 * Copyright The WildFly Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.wildfly.clustering.marshalling.protostream;

import java.io.ObjectInput;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

/**
 * {@link ObjectInput} implementation used to write the unexposed fields of an {@link java.io.Externalizable} object.
 * @author Paul Ferraro
 */
public class SimpleObjectInput extends SimpleDataInput implements ObjectInput {

	private final Iterator objects;

	SimpleObjectInput(Builder builder) {
		super(builder);
		this.objects = builder.objects.iterator();
	}

	@Override
	public Object readObject() {
		return this.objects.next();
	}

	@Override
	public int read() {
		return this.readByte();
	}

	@Override
	public int read(byte[] bytes) {
		ByteBuffer buffer = this.nextBuffer();
		int start = buffer.position();
		return buffer.get(bytes).position() - start;
	}

	@Override
	public int read(byte[] bytes, int offset, int length) {
		ByteBuffer buffer = this.nextBuffer();
		int start = buffer.position();
		return buffer.get(bytes, offset, length).position() - start;
	}

	@Override
	public long skip(long n) {
		throw new UnsupportedOperationException();
	}

	@Override
	public int available() {
		throw new UnsupportedOperationException();
	}

	@Override
	public void close() {
		// Nothing to close
	}

	public static class Builder extends SimpleDataInput.Builder {
		List objects = Collections.emptyList();

		public Builder with(Object... values) {
			this.objects = Arrays.asList(values);
			return this;
		}

		@Override
		public Builder with(String... values) {
			super.with(values);
			return this;
		}

		@Override
		public Builder with(ByteBuffer... buffers) {
			super.with(buffers);
			return this;
		}

		@Override
		public Builder with(char... values) {
			super.with(values);
			return this;
		}

		@Override
		public Builder with(boolean... values) {
			super.with(values);
			return this;
		}

		@Override
		public Builder with(byte... values) {
			super.with(values);
			return this;
		}

		@Override
		public Builder with(short... values) {
			super.with(values);
			return this;
		}

		@Override
		public Builder with(int... values) {
			super.with(values);
			return this;
		}

		@Override
		public Builder with(long... values) {
			super.with(values);
			return this;
		}

		@Override
		public Builder with(float... values) {
			super.with(values);
			return this;
		}

		@Override
		public Builder with(double... values) {
			super.with(values);
			return this;
		}

		@Override
		public ObjectInput build() {
			return new SimpleObjectInput(this);
		}
	}
}
    

    

    

            

    

            



    
    






    
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