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	/*
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	/*
	* This file is available under and governed by the GNU General Public
	* License version 2 only, as published by the Free Software Foundation.
	* However, the following notice accompanied the original version of this
	* file:
	*
	* ASM: a very small and fast Java bytecode manipulation framework
	* Copyright (c) 2000-2011 INRIA, France Telecom
	* 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 jdk.internal.org.objectweb.asm.tree;

	import java.util.ArrayList;
	import java.util.List;
	import jdk.internal.org.objectweb.asm.AnnotationVisitor;
	import jdk.internal.org.objectweb.asm.Opcodes;

	/**
	* A node that represents an annotation.
	*
	* @author Eric Bruneton
	*/
	public class AnnotationNode extends AnnotationVisitor {

	/** The class descriptor of the annotation class. */
	public String desc;

	/**
	* The name value pairs of this annotation. Each name value pair is stored as two consecutive
	* elements in the list. The name is a {@link String}, and the value may be a {@link Byte}, {@link
	* Boolean}, {@link Character}, {@link Short}, {@link Integer}, {@link Long}, {@link Float},
	* {@link Double}, {@link String} or {@link jdk.internal.org.objectweb.asm.Type}, or a two elements String
	* array (for enumeration values), an {@link AnnotationNode}, or a {@link List} of values of one
	* of the preceding types. The list may be {@literal null} if there is no name value pair.
	*/
	public List<Object> values;

	/**
	* Constructs a new {@link AnnotationNode}. <i>Subclasses must not use this constructor</i>.
	* Instead, they must use the {@link #AnnotationNode(int, String)} version.
	*
	* @param descriptor the class descriptor of the annotation class.
	* @throws IllegalStateException If a subclass calls this constructor.
	*/
	public AnnotationNode(final String descriptor) {
	this(/* latest api = */ Opcodes.ASM8, descriptor);
	if (getClass() != AnnotationNode.class) {
	throw new IllegalStateException();
	}
	}

	/**
	* Constructs a new {@link AnnotationNode}.
	*
	* @param api the ASM API version implemented by this visitor. Must be one of {@link
	* Opcodes#ASM4}, {@link Opcodes#ASM5}, {@link Opcodes#ASM6}, {@link Opcodes#ASM7} or {@link
	* Opcodes#ASM8}
	* @param descriptor the class descriptor of the annotation class.
	*/
	public AnnotationNode(final int api, final String descriptor) {
	super(api);
	this.desc = descriptor;
	}

	/**
	* Constructs a new {@link AnnotationNode} to visit an array value.
	*
	* @param values where the visited values must be stored.
	*/
	AnnotationNode(final List<Object> values) {
	super(/* latest api = */ Opcodes.ASM8);
	this.values = values;
	}

	// ------------------------------------------------------------------------
	// Implementation of the AnnotationVisitor abstract class
	// ------------------------------------------------------------------------

	@Override
	public void visit(final String name, final Object value) {
	if (values == null) {
	values = new ArrayList<>(this.desc != null ? 2 : 1);
	}
	if (this.desc != null) {
	values.add(name);
	}
	if (value instanceof byte[]) {
	values.add(Util.asArrayList((byte[]) value));
	} else if (value instanceof boolean[]) {
	values.add(Util.asArrayList((boolean[]) value));
	} else if (value instanceof short[]) {
	values.add(Util.asArrayList((short[]) value));
	} else if (value instanceof char[]) {
	values.add(Util.asArrayList((char[]) value));
	} else if (value instanceof int[]) {
	values.add(Util.asArrayList((int[]) value));
	} else if (value instanceof long[]) {
	values.add(Util.asArrayList((long[]) value));
	} else if (value instanceof float[]) {
	values.add(Util.asArrayList((float[]) value));
	} else if (value instanceof double[]) {
	values.add(Util.asArrayList((double[]) value));
	} else {
	values.add(value);
	}
	}

	@Override
	public void visitEnum(final String name, final String descriptor, final String value) {
	if (values == null) {
	values = new ArrayList<>(this.desc != null ? 2 : 1);
	}
	if (this.desc != null) {
	values.add(name);
	}
	values.add(new String[] {descriptor, value});
	}

	@Override
	public AnnotationVisitor visitAnnotation(final String name, final String descriptor) {
	if (values == null) {
	values = new ArrayList<>(this.desc != null ? 2 : 1);
	}
	if (this.desc != null) {
	values.add(name);
	}
	AnnotationNode annotation = new AnnotationNode(descriptor);
	values.add(annotation);
	return annotation;
	}

	@Override
	public AnnotationVisitor visitArray(final String name) {
	if (values == null) {
	values = new ArrayList<>(this.desc != null ? 2 : 1);
	}
	if (this.desc != null) {
	values.add(name);
	}
	List<Object> array = new ArrayList<>();
	values.add(array);
	return new AnnotationNode(array);
	}

	@Override
	public void visitEnd() {
	// Nothing to do.
	}

	// ------------------------------------------------------------------------
	// Accept methods
	// ------------------------------------------------------------------------

	/**
	* Checks that this annotation node is compatible with the given ASM API version. This method
	* checks that this node, and all its children recursively, do not contain elements that were
	* introduced in more recent versions of the ASM API than the given version.
	*
	* @param api an ASM API version. Must be one of {@link Opcodes#ASM4}, {@link Opcodes#ASM5},
	* {@link Opcodes#ASM6}, {@link Opcodes#ASM7} or {@link Opcodes#ASM8}.
	*/
	public void check(final int api) {
	// nothing to do
	}

	/**
	* Makes the given visitor visit this annotation.
	*
	* @param annotationVisitor an annotation visitor. Maybe {@literal null}.
	*/
	public void accept(final AnnotationVisitor annotationVisitor) {
	if (annotationVisitor != null) {
	if (values != null) {
	for (int i = 0, n = values.size(); i < n; i += 2) {
	String name = (String) values.get(i);
	Object value = values.get(i + 1);
	accept(annotationVisitor, name, value);
	}
	}
	annotationVisitor.visitEnd();
	}
	}

	/**
	* Makes the given visitor visit a given annotation value.
	*
	* @param annotationVisitor an annotation visitor. Maybe {@literal null}.
	* @param name the value name.
	* @param value the actual value.
	*/
	static void accept(
	final AnnotationVisitor annotationVisitor, final String name, final Object value) {
	if (annotationVisitor != null) {
	if (value instanceof String[]) {
	String[] typeValue = (String[]) value;
	annotationVisitor.visitEnum(name, typeValue[0], typeValue[1]);
	} else if (value instanceof AnnotationNode) {
	AnnotationNode annotationValue = (AnnotationNode) value;
	annotationValue.accept(annotationVisitor.visitAnnotation(name, annotationValue.desc));
	} else if (value instanceof List) {
	AnnotationVisitor arrayAnnotationVisitor = annotationVisitor.visitArray(name);
	if (arrayAnnotationVisitor != null) {
	List<?> arrayValue = (List<?>) value;
	for (int i = 0, n = arrayValue.size(); i < n; ++i) {
	accept(arrayAnnotationVisitor, null, arrayValue.get(i));
	}
	arrayAnnotationVisitor.visitEnd();
	}
	} else {
	annotationVisitor.visit(name, value);
	}
	}
	}
	}

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