Copyright (c) 2015, 2016 Google, Inc and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
  Stefan Xenos (Google) - Initial implementation
/*******************************************************************************
 * Copyright (c) 2015, 2016 Google, Inc and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *   Stefan Xenos (Google) - Initial implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.core.nd.field;

import org.eclipse.jdt.internal.core.nd.Nd;
import org.eclipse.jdt.internal.core.nd.db.ModificationLog;
import org.eclipse.jdt.internal.core.nd.db.ModificationLog.Tag;
import org.eclipse.jdt.internal.core.nd.db.Database;

Declares a Nd field of type long. Can be used in place of Field&ltLong> in order to avoid extra GC overhead. /**
 * Declares a Nd field of type long. Can be used in place of  {@link Field}&lt{@link Long}&gt in order to
 * avoid extra GC overhead.
 */
public class FieldLong extends BaseField {
	private final Tag tag;

	public FieldLong(String structName, int fieldNumber) {
		setFieldName("field " + fieldNumber + ", a " + getClass().getSimpleName() + " in struct " + structName); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
		this.tag = ModificationLog.createTag("Writing " + getFieldName()); //$NON-NLS-1$
	}

	public long get(Nd nd, long address) {
		Database db = nd.getDB();
		return db.getLong(address + this.offset);
	}

	public void put(Nd nd, long address, long newValue) {
		Database db = nd.getDB();
		db.getLog().start(this.tag);
		try {
			nd.getDB().putLong(address + this.offset, newValue);
		} finally {
			db.getLog().end(this.tag);
		}
	}

	@Override
	public int getRecordSize() {
		return Database.LONG_SIZE;
	}
}