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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;

	/**
	* @author Remi Forax
	*/
	final class ModuleWriter extends ModuleVisitor {
	/**
	* The class writer to which this Module attribute must be added.
	*/
	private final ClassWriter cw;

	/**
	* size in byte of the Module attribute.
	*/
	int size;

	/**
	* Number of attributes associated with the current module
	* (Version, ConcealPackages, etc)
	*/
	int attributeCount;

	/**
	* Size in bytes of the attributes associated with the current module
	*/
	int attributesSize;

	/**
	* module name index in the constant pool
	*/
	private final int name;

	/**
	* module access flags
	*/
	private final int access;

	/**
	* module version index in the constant pool or 0
	*/
	private final int version;

	/**
	* module main class index in the constant pool or 0
	*/
	private int mainClass;

	/**
	* number of packages
	*/
	private int packageCount;

	/**
	* The packages in bytecode form. This byte vector only contains
	* the items themselves, the number of items is store in packageCount
	*/
	private ByteVector packages;

	/**
	* number of requires items
	*/
	private int requireCount;

	/**
	* The requires items in bytecode form. This byte vector only contains
	* the items themselves, the number of items is store in requireCount
	*/
	private ByteVector requires;

	/**
	* number of exports items
	*/
	private int exportCount;

	/**
	* The exports items in bytecode form. This byte vector only contains
	* the items themselves, the number of items is store in exportCount
	*/
	private ByteVector exports;

	/**
	* number of opens items
	*/
	private int openCount;

	/**
	* The opens items in bytecode form. This byte vector only contains
	* the items themselves, the number of items is store in openCount
	*/
	private ByteVector opens;

	/**
	* number of uses items
	*/
	private int useCount;

	/**
	* The uses items in bytecode form. This byte vector only contains
	* the items themselves, the number of items is store in useCount
	*/
	private ByteVector uses;

	/**
	* number of provides items
	*/
	private int provideCount;

	/**
	* The uses provides in bytecode form. This byte vector only contains
	* the items themselves, the number of items is store in provideCount
	*/
	private ByteVector provides;

	ModuleWriter(final ClassWriter cw, final int name,
	final int access, final int version) {
	super(Opcodes.ASM6);
	this.cw = cw;
	this.size = 16; // name + access + version + 5 counts
	this.name = name;
	this.access = access;
	this.version = version;
	}

	@Override
	public void visitMainClass(String mainClass) {
	if (this.mainClass == 0) { // protect against several calls to visitMainClass
	cw.newUTF8("ModuleMainClass");
	attributeCount++;
	attributesSize += 8;
	}
	this.mainClass = cw.newClass(mainClass);
	}

	@Override
	public void visitPackage(String packaze) {
	if (packages == null) {
	// protect against several calls to visitPackage
	cw.newUTF8("ModulePackages");
	packages = new ByteVector();
	attributeCount++;
	attributesSize += 8;
	}
	packages.putShort(cw.newPackage(packaze));
	packageCount++;
	attributesSize += 2;
	}

	@Override
	public void visitRequire(String module, int access, String version) {
	if (requires == null) {
	requires = new ByteVector();
	}
	requires.putShort(cw.newModule(module))
	.putShort(access)
	.putShort(version == null? 0: cw.newUTF8(version));
	requireCount++;
	size += 6;
	}

	@Override
	public void visitExport(String packaze, int access, String... modules) {
	if (exports == null) {
	exports = new ByteVector();
	}
	exports.putShort(cw.newPackage(packaze)).putShort(access);
	if (modules == null) {
	exports.putShort(0);
	size += 6;
	} else {
	exports.putShort(modules.length);
	for(String module: modules) {
	exports.putShort(cw.newModule(module));
	}
	size += 6 + 2 * modules.length;
	}
	exportCount++;
	}

	@Override
	public void visitOpen(String packaze, int access, String... modules) {
	if (opens == null) {
	opens = new ByteVector();
	}
	opens.putShort(cw.newPackage(packaze)).putShort(access);
	if (modules == null) {
	opens.putShort(0);
	size += 6;
	} else {
	opens.putShort(modules.length);
	for(String module: modules) {
	opens.putShort(cw.newModule(module));
	}
	size += 6 + 2 * modules.length;
	}
	openCount++;
	}

	@Override
	public void visitUse(String service) {
	if (uses == null) {
	uses = new ByteVector();
	}
	uses.putShort(cw.newClass(service));
	useCount++;
	size += 2;
	}

	@Override
	public void visitProvide(String service, String... providers) {
	if (provides == null) {
	provides = new ByteVector();
	}
	provides.putShort(cw.newClass(service));
	provides.putShort(providers.length);
	for(String provider: providers) {
	provides.putShort(cw.newClass(provider));
	}
	provideCount++;
	size += 4 + 2 * providers.length;
	}

	@Override
	public void visitEnd() {
	// empty
	}

	void putAttributes(ByteVector out) {
	if (mainClass != 0) {
	out.putShort(cw.newUTF8("ModuleMainClass")).putInt(2).putShort(mainClass);
	}
	if (packages != null) {
	out.putShort(cw.newUTF8("ModulePackages"))
	.putInt(2 + 2 * packageCount)
	.putShort(packageCount)
	.putByteArray(packages.data, 0, packages.length);
	}
	}

	void put(ByteVector out) {
	out.putInt(size);
	out.putShort(name).putShort(access).putShort(version);
	out.putShort(requireCount);
	if (requires != null) {
	out.putByteArray(requires.data, 0, requires.length);
	}
	out.putShort(exportCount);
	if (exports != null) {
	out.putByteArray(exports.data, 0, exports.length);
	}
	out.putShort(openCount);
	if (opens != null) {
	out.putByteArray(opens.data, 0, opens.length);
	}
	out.putShort(useCount);
	if (uses != null) {
	out.putByteArray(uses.data, 0, uses.length);
	}
	out.putShort(provideCount);
	if (provides != null) {
	out.putByteArray(provides.data, 0, provides.length);
	}
	}
	}

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