/***
 * ASM XML Adapter
 * Copyright (c) 2004, Eugene Kuleshov
 * All rights reserved.
 *
 * 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.
 * 3. Neither the name of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * 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 alterrs.asm.xml;

import org.xml.sax.ContentHandler;
import org.xml.sax.helpers.AttributesImpl;

import alterrs.asm.AnnotationVisitor;
import alterrs.asm.Type;

/**
 * SAXAnnotationAdapter
 * 
 * @author Eugene Kuleshov
 */
public class SAXAnnotationAdapter extends SAXAdapter implements
		AnnotationVisitor {
	private final String elementName;

	public SAXAnnotationAdapter(final ContentHandler h,
			final String elementName, final int visible, final String name,
			final String desc) {
		this(h, elementName, visible, desc, name, -1);
	}

	public SAXAnnotationAdapter(final ContentHandler h,
			final String elementName, final int visible, final int parameter,
			final String desc) {
		this(h, elementName, visible, desc, null, parameter);
	}

	private SAXAnnotationAdapter(final ContentHandler h,
			final String elementName, final int visible, final String desc,
			final String name, final int parameter) {
		super(h);
		this.elementName = elementName;

		AttributesImpl att = new AttributesImpl();
		if (name != null) {
			att.addAttribute("", "name", "name", "", name);
		}
		if (visible != 0) {
			att.addAttribute("", "visible", "visible", "", visible > 0 ? "true"
					: "false");
		}
		if (parameter != -1) {
			att.addAttribute("", "parameter", "parameter", "",
					Integer.toString(parameter));
		}
		if (desc != null) {
			att.addAttribute("", "desc", "desc", "", desc);
		}

		addStart(elementName, att);
	}

	public void visit(final String name, final Object value) {
		Class c = value.getClass();
		if (c.isArray()) {
			AnnotationVisitor av = visitArray(name);
			if (value instanceof byte[]) {
				byte[] b = (byte[]) value;
				for (int i = 0; i < b.length; i++) {
					av.visit(null, new Byte(b[i]));
				}
			} else if (value instanceof char[]) {
				char[] b = (char[]) value;
				for (int i = 0; i < b.length; i++) {
					av.visit(null, new Character(b[i]));
				}
			} else if (value instanceof short[]) {
				short[] b = (short[]) value;
				for (int i = 0; i < b.length; i++) {
					av.visit(null, new Short(b[i]));
				}
			} else if (value instanceof boolean[]) {
				boolean[] b = (boolean[]) value;
				for (int i = 0; i < b.length; i++) {
					av.visit(null, Boolean.valueOf(b[i]));
				}
			} else if (value instanceof int[]) {
				int[] b = (int[]) value;
				for (int i = 0; i < b.length; i++) {
					av.visit(null, new Integer(b[i]));
				}
			} else if (value instanceof long[]) {
				long[] b = (long[]) value;
				for (int i = 0; i < b.length; i++) {
					av.visit(null, new Long(b[i]));
				}
			} else if (value instanceof float[]) {
				float[] b = (float[]) value;
				for (int i = 0; i < b.length; i++) {
					av.visit(null, new Float(b[i]));
				}
			} else if (value instanceof double[]) {
				double[] b = (double[]) value;
				for (int i = 0; i < b.length; i++) {
					av.visit(null, new Double(b[i]));
				}
			}
			av.visitEnd();
		} else {
			addValueElement("annotationValue", name, Type.getDescriptor(c),
					value.toString());
		}
	}

	public void visitEnum(final String name, final String desc,
			final String value) {
		addValueElement("annotationValueEnum", name, desc, value);
	}

	public AnnotationVisitor visitAnnotation(final String name,
			final String desc) {
		return new SAXAnnotationAdapter(getContentHandler(),
				"annotationValueAnnotation", 0, name, desc);
	}

	public AnnotationVisitor visitArray(final String name) {
		return new SAXAnnotationAdapter(getContentHandler(),
				"annotationValueArray", 0, name, null);
	}

	public void visitEnd() {
		addEnd(elementName);
	}

	private void addValueElement(final String element, final String name,
			final String desc, final String value) {
		AttributesImpl att = new AttributesImpl();
		if (name != null) {
			att.addAttribute("", "name", "name", "", name);
		}
		if (desc != null) {
			att.addAttribute("", "desc", "desc", "", desc);
		}
		if (value != null) {
			att.addAttribute("", "value", "value", "",
					SAXClassAdapter.encode(value));
		}

		addElement(element, att);
	}
}
