/*
 * #%L
 * SciJava Common shared library for SciJava software.
 * %%
 * Copyright (C) 2009 - 2015 Board of Regents of the University of
 * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
 * Institute of Molecular Cell Biology and Genetics.
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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 HOLDERS 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.
 * #L%
 */

package org.scijava.convert;

import java.lang.reflect.Type;

/**
 * Currency for use in {@link Converter} and {@link ConvertService}
 * methods.
 * <p>
 * {@link #ConversionRequest} provides a variety of constructors. Note that only
 * one destination type needs to be set (e.g. either a {@link Type} or a
 * {@link Class}).
 * </p>
 * <p>
 * Only the {@link Class} source needs to be set for {@link Converter}
 * lookup, such as through
 * {@link ConvertService#getHandler(ConversionRequest)}. However, to perform
 * an actual conversion, e.g. using
 * {@link Converter#convert(ConversionRequest)}, you must provide an
 * {@link Object} source.
 * </p>
 * <p>
 * NB: once a {@link Converter} has been acquired, the
 * {@code ConversionRequest} used for lookup can be reused to cast to the same
 * destination type, simply by updating the source object using the
 * {@link #setSourceObject(Object)} method.
 * </p>
 *
 * @author Mark Hiner
 */
public class ConversionRequest {

	// -- Fields --

	private final Class<?> srcClass;
	private Object srcObject;
	private Class<?> destClass;
	private Type destType;

	// -- Constructors --

	public ConversionRequest(final Object s, final Class<?> d) {
		this(s == null ? null : s.getClass(), d);
		srcObject = s;
	}

	public ConversionRequest(final Class<?> s, final Class<?> d) {
		srcClass = s;
		destClass = d;
	}

	public ConversionRequest(final Object s, final Type d) {
		this(s == null ? null : s.getClass(), d);
		srcObject = s;
	}

	public ConversionRequest(final Class<?> s, final Type d) {
		srcClass = s;
		destType = d;
	}

	// -- Accessors --

	/**
	 * @return Source class for conversion or lookup.
	 */
	public Class<?> sourceClass() {
		return srcClass;
	}

	/**
	 * @return Source object for conversion.
	 */
	public Object sourceObject() {
		return srcObject;
	}

	/**
	 * @return Destination type for conversion.
	 */
	public Type destType() {
		return destType;
	}

	/**
	 * @return Destination class for conversion.
	 */
	public Class<?> destClass() {
		return destClass;
	}

// -- Setters --

	/**
	 * Sets the source object for this {@link ConversionRequest}.
	 *
	 * @throws IllegalArgumentException If the class of the provided object does
	 *           not match {@link #sourceClass()}.
	 */
	public void setSourceObject(final Object o) {
		if (!srcClass.isAssignableFrom(o.getClass())) {
			throw new IllegalArgumentException("Object of type: " + o.getClass() +
				" provided. Expected: " + srcClass);
		}

		srcObject = o;
	}
}

@@ -2630,24 +2630,18 @@
 ject src
-Object
 ;%0A
+
 %09private
@@ -2813,38 +2813,32 @@
 ass(), d);%0A%09%09src
-Object
  = s;%0A%09%7D%0A%0A%09publi
@@ -3039,22 +3039,16 @@
 );%0A%09%09src
-Object
  = s;%0A%09%7D
@@ -3379,22 +3379,16 @@
 turn src
-Object
 ;%0A%09%7D%0A%0A%09/
@@ -4042,19 +4042,13 @@
 %09%7D%0A%0A
+
 %09%09src
-Object
  = o

rename source object variable