content: /*
   * Copyright (c) 2017, Andreas Fagschlunger. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *   - Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   *
   *   - Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package at.o2xfs.win32;
  
  import org.apache.commons.lang3.builder.ToStringBuilder;
  
  /**
   * Base class for <code>union</code> types.
   *
   * @author Andreas Fagschlunger
   */
  public class Union extends Type {
  
  	public static class Field {
  
  		private String name = null;
  
  		private Type type = null;
  
  		public Field(final String name, final Type type) {
  			if (name == null) {
  				throw new IllegalArgumentException("name must not be null");
  			} else if (type == null) {
  				throw new IllegalArgumentException("type must not be null");
  			}
  			this.name = name;
  			this.type = type;
  		}
  
  		public String getName() {
  			return name;
  		}
  
  		public Type getType() {
  			return type;
  		}
  
  		@Override
  		public String toString() {
  			return name + "=" + type;
  		}
  	}
  
  	private Field[] fields = null;
  
  	private int size = 0;
  
  	public Union(final Field[] fields) {
  		if (fields == null) {
  			throw new IllegalArgumentException("fields must not be null");
  		} else if (fields.length < 1) {
  			throw new IllegalArgumentException("fields must not be empty");
  		}
  		for (Field field : fields) {
  			size = Math.max(size, field.getType().getSize());
  		}
  		this.fields = fields;
  	}
  
  	public <T extends Type> T get(final String name, final Class<T> type) {
  		for (Field field : fields) {
  			if (field.getName().equals(name)) {
  				return type.cast(field.getType());
  			}
  		}
  		return null;
  	}
  
  	@Override
  	protected void assignBuffer(Buffer buffer) {
  		super.assignBuffer(buffer);
  		for (Field each : fields) {
  			each.type.assignBuffer(buffer);
  		}
  	}
  
  	@Override
  	public int getSize() {
  		return size;
  	}
  
  	@Override
  	public String toString() {
  		return new ToStringBuilder(this).append("size", size)
  				.append("fields", fields).toString();
  	}
  }