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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.commons;

	import java.util.HashMap;
	import java.util.Map;

	import jdk.internal.org.objectweb.asm.Type;

	/**
	* A named method descriptor.
	*
	* @author Juozas Baliuka
	* @author Chris Nokleberg
	* @author Eric Bruneton
	*/
	public class Method {

	/**
	* The method name.
	*/
	private final String name;

	/**
	* The method descriptor.
	*/
	private final String desc;

	/**
	* Maps primitive Java type names to their descriptors.
	*/
	private static final Map<String, String> DESCRIPTORS;

	static {
	DESCRIPTORS = new HashMap<String, String>();
	DESCRIPTORS.put("void", "V");
	DESCRIPTORS.put("byte", "B");
	DESCRIPTORS.put("char", "C");
	DESCRIPTORS.put("double", "D");
	DESCRIPTORS.put("float", "F");
	DESCRIPTORS.put("int", "I");
	DESCRIPTORS.put("long", "J");
	DESCRIPTORS.put("short", "S");
	DESCRIPTORS.put("boolean", "Z");
	}

	/**
	* Creates a new {@link Method}.
	*
	* @param name
	* the method's name.
	* @param desc
	* the method's descriptor.
	*/
	public Method(final String name, final String desc) {
	this.name = name;
	this.desc = desc;
	}

	/**
	* Creates a new {@link Method}.
	*
	* @param name
	* the method's name.
	* @param returnType
	* the method's return type.
	* @param argumentTypes
	* the method's argument types.
	*/
	public Method(final String name, final Type returnType,
	final Type[] argumentTypes) {
	this(name, Type.getMethodDescriptor(returnType, argumentTypes));
	}

	/**
	* Creates a new {@link Method}.
	*
	* @param m
	* a java.lang.reflect method descriptor
	* @return a {@link Method} corresponding to the given Java method
	* declaration.
	*/
	public static Method getMethod(java.lang.reflect.Method m) {
	return new Method(m.getName(), Type.getMethodDescriptor(m));
	}

	/**
	* Creates a new {@link Method}.
	*
	* @param c
	* a java.lang.reflect constructor descriptor
	* @return a {@link Method} corresponding to the given Java constructor
	* declaration.
	*/
	public static Method getMethod(java.lang.reflect.Constructor<?> c) {
	return new Method("<init>", Type.getConstructorDescriptor(c));
	}

	/**
	* Returns a {@link Method} corresponding to the given Java method
	* declaration.
	*
	* @param method
	* a Java method declaration, without argument names, of the form
	* "returnType name (argumentType1, ... argumentTypeN)", where
	* the types are in plain Java (e.g. "int", "float",
	* "java.util.List", ...). Classes of the java.lang package can
	* be specified by their unqualified name; all other classes
	* names must be fully qualified.
	* @return a {@link Method} corresponding to the given Java method
	* declaration.
	* @throws IllegalArgumentException
	* if <code>method</code> could not get parsed.
	*/
	public static Method getMethod(final String method)
	throws IllegalArgumentException {
	return getMethod(method, false);
	}

	/**
	* Returns a {@link Method} corresponding to the given Java method
	* declaration.
	*
	* @param method
	* a Java method declaration, without argument names, of the form
	* "returnType name (argumentType1, ... argumentTypeN)", where
	* the types are in plain Java (e.g. "int", "float",
	* "java.util.List", ...). Classes of the java.lang package may
	* be specified by their unqualified name, depending on the
	* defaultPackage argument; all other classes names must be fully
	* qualified.
	* @param defaultPackage
	* true if unqualified class names belong to the default package,
	* or false if they correspond to java.lang classes. For instance
	* "Object" means "Object" if this option is true, or
	* "java.lang.Object" otherwise.
	* @return a {@link Method} corresponding to the given Java method
	* declaration.
	* @throws IllegalArgumentException
	* if <code>method</code> could not get parsed.
	*/
	public static Method getMethod(final String method,
	final boolean defaultPackage) throws IllegalArgumentException {
	int space = method.indexOf(' ');
	int start = method.indexOf('(', space) + 1;
	int end = method.indexOf(')', start);
	if (space == -1 \|\| start == -1 \|\| end == -1) {
	throw new IllegalArgumentException();
	}
	String returnType = method.substring(0, space);
	String methodName = method.substring(space + 1, start - 1).trim();
	StringBuilder sb = new StringBuilder();
	sb.append('(');
	int p;
	do {
	String s;
	p = method.indexOf(',', start);
	if (p == -1) {
	s = map(method.substring(start, end).trim(), defaultPackage);
	} else {
	s = map(method.substring(start, p).trim(), defaultPackage);
	start = p + 1;
	}
	sb.append(s);
	} while (p != -1);
	sb.append(')');
	sb.append(map(returnType, defaultPackage));
	return new Method(methodName, sb.toString());
	}

	private static String map(final String type, final boolean defaultPackage) {
	if ("".equals(type)) {
	return type;
	}

	StringBuilder sb = new StringBuilder();
	int index = 0;
	while ((index = type.indexOf("[]", index) + 1) > 0) {
	sb.append('[');
	}

	String t = type.substring(0, type.length() - sb.length() * 2);
	String desc = DESCRIPTORS.get(t);
	if (desc != null) {
	sb.append(desc);
	} else {
	sb.append('L');
	if (t.indexOf('.') < 0) {
	if (!defaultPackage) {
	sb.append("java/lang/");
	}
	sb.append(t);
	} else {
	sb.append(t.replace('.', '/'));
	}
	sb.append(';');
	}
	return sb.toString();
	}

	/**
	* Returns the name of the method described by this object.
	*
	* @return the name of the method described by this object.
	*/
	public String getName() {
	return name;
	}

	/**
	* Returns the descriptor of the method described by this object.
	*
	* @return the descriptor of the method described by this object.
	*/
	public String getDescriptor() {
	return desc;
	}

	/**
	* Returns the return type of the method described by this object.
	*
	* @return the return type of the method described by this object.
	*/
	public Type getReturnType() {
	return Type.getReturnType(desc);
	}

	/**
	* Returns the argument types of the method described by this object.
	*
	* @return the argument types of the method described by this object.
	*/
	public Type[] getArgumentTypes() {
	return Type.getArgumentTypes(desc);
	}

	@Override
	public String toString() {
	return name + desc;
	}

	@Override
	public boolean equals(final Object o) {
	if (!(o instanceof Method)) {
	return false;
	}
	Method other = (Method) o;
	return name.equals(other.name) && desc.equals(other.desc);
	}

	@Override
	public int hashCode() {
	return name.hashCode() ^ desc.hashCode();
	}
	}

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