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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;

	import java.util.Arrays;

	/**
	* A constant whose value is computed at runtime, with a bootstrap method.
	*
	* @author Remi Forax
	*/
	public final class ConstantDynamic {

	/** The constant name (can be arbitrary). */
	private final String name;

	/** The constant type (must be a field descriptor). */
	private final String descriptor;

	/** The bootstrap method to use to compute the constant value at runtime. */
	private final Handle bootstrapMethod;

	/**
	* The arguments to pass to the bootstrap method, in order to compute the constant value at
	* runtime.
	*/
	private final Object[] bootstrapMethodArguments;

	/**
	* Constructs a new {@link ConstantDynamic}.
	*
	* @param name the constant name (can be arbitrary).
	* @param descriptor the constant type (must be a field descriptor).
	* @param bootstrapMethod the bootstrap method to use to compute the constant value at runtime.
	* @param bootstrapMethodArguments the arguments to pass to the bootstrap method, in order to
	* compute the constant value at runtime.
	*/
	public ConstantDynamic(
	final String name,
	final String descriptor,
	final Handle bootstrapMethod,
	final Object... bootstrapMethodArguments) {
	this.name = name;
	this.descriptor = descriptor;
	this.bootstrapMethod = bootstrapMethod;
	this.bootstrapMethodArguments = bootstrapMethodArguments;
	}

	/**
	* Returns the name of this constant.
	*
	* @return the name of this constant.
	*/
	public String getName() {
	return name;
	}

	/**
	* Returns the type of this constant.
	*
	* @return the type of this constant, as a field descriptor.
	*/
	public String getDescriptor() {
	return descriptor;
	}

	/**
	* Returns the bootstrap method used to compute the value of this constant.
	*
	* @return the bootstrap method used to compute the value of this constant.
	*/
	public Handle getBootstrapMethod() {
	return bootstrapMethod;
	}

	/**
	* Returns the number of arguments passed to the bootstrap method, in order to compute the value
	* of this constant.
	*
	* @return the number of arguments passed to the bootstrap method, in order to compute the value
	* of this constant.
	*/
	public int getBootstrapMethodArgumentCount() {
	return bootstrapMethodArguments.length;
	}

	/**
	* Returns an argument passed to the bootstrap method, in order to compute the value of this
	* constant.
	*
	* @param index an argument index, between 0 and {@link #getBootstrapMethodArgumentCount()}
	* (exclusive).
	* @return the argument passed to the bootstrap method, with the given index.
	*/
	public Object getBootstrapMethodArgument(final int index) {
	return bootstrapMethodArguments[index];
	}

	/**
	* Returns the arguments to pass to the bootstrap method, in order to compute the value of this
	* constant. WARNING: this array must not be modified, and must not be returned to the user.
	*
	* @return the arguments to pass to the bootstrap method, in order to compute the value of this
	* constant.
	*/
	Object[] getBootstrapMethodArgumentsUnsafe() {
	return bootstrapMethodArguments;
	}

	/**
	* Returns the size of this constant.
	*
	* @return the size of this constant, i.e., 2 for {@code long} and {@code double}, 1 otherwise.
	*/
	public int getSize() {
	char firstCharOfDescriptor = descriptor.charAt(0);
	return (firstCharOfDescriptor == 'J' \|\| firstCharOfDescriptor == 'D') ? 2 : 1;
	}

	@Override
	public boolean equals(final Object object) {
	if (object == this) {
	return true;
	}
	if (!(object instanceof ConstantDynamic)) {
	return false;
	}
	ConstantDynamic constantDynamic = (ConstantDynamic) object;
	return name.equals(constantDynamic.name)
	&& descriptor.equals(constantDynamic.descriptor)
	&& bootstrapMethod.equals(constantDynamic.bootstrapMethod)
	&& Arrays.equals(bootstrapMethodArguments, constantDynamic.bootstrapMethodArguments);
	}

	@Override
	public int hashCode() {
	return name.hashCode()
	^ Integer.rotateLeft(descriptor.hashCode(), 8)
	^ Integer.rotateLeft(bootstrapMethod.hashCode(), 16)
	^ Integer.rotateLeft(Arrays.hashCode(bootstrapMethodArguments), 24);
	}

	@Override
	public String toString() {
	return name
	+ " : "
	+ descriptor
	+ ' '
	+ bootstrapMethod
	+ ' '
	+ Arrays.toString(bootstrapMethodArguments);
	}
	}

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