1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/clojure/asm/commons/Method.java	Sat Aug 21 06:25:44 2010 -0400
     1.3 @@ -0,0 +1,267 @@
     1.4 +/***
     1.5 + * ASM: a very small and fast Java bytecode manipulation framework
     1.6 + * Copyright (c) 2000-2005 INRIA, France Telecom
     1.7 + * All rights reserved.
     1.8 + *
     1.9 + * Redistribution and use in source and binary forms, with or without
    1.10 + * modification, are permitted provided that the following conditions
    1.11 + * are met:
    1.12 + * 1. Redistributions of source code must retain the above copyright
    1.13 + *    notice, this list of conditions and the following disclaimer.
    1.14 + * 2. Redistributions in binary form must reproduce the above copyright
    1.15 + *    notice, this list of conditions and the following disclaimer in the
    1.16 + *    documentation and/or other materials provided with the distribution.
    1.17 + * 3. Neither the name of the copyright holders nor the names of its
    1.18 + *    contributors may be used to endorse or promote products derived from
    1.19 + *    this software without specific prior written permission.
    1.20 + *
    1.21 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    1.22 + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    1.23 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    1.24 + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
    1.25 + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    1.26 + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    1.27 + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    1.28 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    1.29 + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    1.30 + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
    1.31 + * THE POSSIBILITY OF SUCH DAMAGE.
    1.32 + */
    1.33 +package clojure.asm.commons;
    1.34 +
    1.35 +import java.util.HashMap;
    1.36 +import java.util.Map;
    1.37 +
    1.38 +import clojure.asm.Type;
    1.39 +
    1.40 +/**
    1.41 + * A named method descriptor.
    1.42 + *
    1.43 + * @author Juozas Baliuka
    1.44 + * @author Chris Nokleberg
    1.45 + * @author Eric Bruneton
    1.46 + */
    1.47 +public class Method{
    1.48 +
    1.49 +/**
    1.50 + * The method name.
    1.51 + */
    1.52 +private final String name;
    1.53 +
    1.54 +/**
    1.55 + * The method descriptor.
    1.56 + */
    1.57 +private final String desc;
    1.58 +
    1.59 +/**
    1.60 + * Maps primitive Java type names to their descriptors.
    1.61 + */
    1.62 +private final static Map DESCRIPTORS;
    1.63 +
    1.64 +static
    1.65 +	{
    1.66 +	DESCRIPTORS = new HashMap();
    1.67 +	DESCRIPTORS.put("void", "V");
    1.68 +	DESCRIPTORS.put("byte", "B");
    1.69 +	DESCRIPTORS.put("char", "C");
    1.70 +	DESCRIPTORS.put("double", "D");
    1.71 +	DESCRIPTORS.put("float", "F");
    1.72 +	DESCRIPTORS.put("int", "I");
    1.73 +	DESCRIPTORS.put("long", "J");
    1.74 +	DESCRIPTORS.put("short", "S");
    1.75 +	DESCRIPTORS.put("boolean", "Z");
    1.76 +	}
    1.77 +
    1.78 +/**
    1.79 + * Creates a new {@link Method}.
    1.80 + *
    1.81 + * @param name the method's name.
    1.82 + * @param desc the method's descriptor.
    1.83 + */
    1.84 +public Method(final String name, final String desc){
    1.85 +	this.name = name;
    1.86 +	this.desc = desc;
    1.87 +}
    1.88 +
    1.89 +/**
    1.90 + * Creates a new {@link Method}.
    1.91 + *
    1.92 + * @param name          the method's name.
    1.93 + * @param returnType    the method's return type.
    1.94 + * @param argumentTypes the method's argument types.
    1.95 + */
    1.96 +public Method(
    1.97 +		final String name,
    1.98 +		final Type returnType,
    1.99 +		final Type[] argumentTypes){
   1.100 +	this(name, Type.getMethodDescriptor(returnType, argumentTypes));
   1.101 +}
   1.102 +
   1.103 +/**
   1.104 + * Returns a {@link Method} corresponding to the given Java method
   1.105 + * declaration.
   1.106 + *
   1.107 + * @param method a Java method declaration, without argument names, of the
   1.108 + *               form "returnType name (argumentType1, ... argumentTypeN)", where
   1.109 + *               the types are in plain Java (e.g. "int", "float",
   1.110 + *               "java.util.List", ...). Classes of the java.lang package can be
   1.111 + *               specified by their unqualified name; all other classes names must
   1.112 + *               be fully qualified.
   1.113 + * @return a {@link Method} corresponding to the given Java method
   1.114 + *         declaration.
   1.115 + * @throws IllegalArgumentException if <code>method</code> could not get
   1.116 + *                                  parsed.
   1.117 + */
   1.118 +public static Method getMethod(final String method)
   1.119 +		throws IllegalArgumentException{
   1.120 +	return getMethod(method, false);
   1.121 +}
   1.122 +
   1.123 +/**
   1.124 + * Returns a {@link Method} corresponding to the given Java method
   1.125 + * declaration.
   1.126 + *
   1.127 + * @param method         a Java method declaration, without argument names, of the
   1.128 + *                       form "returnType name (argumentType1, ... argumentTypeN)", where
   1.129 + *                       the types are in plain Java (e.g. "int", "float",
   1.130 + *                       "java.util.List", ...). Classes of the java.lang package may be
   1.131 + *                       specified by their unqualified name, depending on the
   1.132 + *                       defaultPackage argument; all other classes names must be fully
   1.133 + *                       qualified.
   1.134 + * @param defaultPackage true if unqualified class names belong to the
   1.135 + *                       default package, or false if they correspond to java.lang classes.
   1.136 + *                       For instance "Object" means "Object" if this option is true, or
   1.137 + *                       "java.lang.Object" otherwise.
   1.138 + * @return a {@link Method} corresponding to the given Java method
   1.139 + *         declaration.
   1.140 + * @throws IllegalArgumentException if <code>method</code> could not get
   1.141 + *                                  parsed.
   1.142 + */
   1.143 +public static Method getMethod(
   1.144 +		final String method,
   1.145 +		final boolean defaultPackage) throws IllegalArgumentException{
   1.146 +	int space = method.indexOf(' ');
   1.147 +	int start = method.indexOf('(', space) + 1;
   1.148 +	int end = method.indexOf(')', start);
   1.149 +	if(space == -1 || start == -1 || end == -1)
   1.150 +		{
   1.151 +		throw new IllegalArgumentException();
   1.152 +		}
   1.153 +	// TODO: Check validity of returnType, methodName and arguments.
   1.154 +	String returnType = method.substring(0, space);
   1.155 +	String methodName = method.substring(space + 1, start - 1).trim();
   1.156 +	StringBuffer sb = new StringBuffer();
   1.157 +	sb.append('(');
   1.158 +	int p;
   1.159 +	do
   1.160 +		{
   1.161 +		String s;
   1.162 +		p = method.indexOf(',', start);
   1.163 +		if(p == -1)
   1.164 +			{
   1.165 +			s = map(method.substring(start, end).trim(), defaultPackage);
   1.166 +			}
   1.167 +		else
   1.168 +			{
   1.169 +			s = map(method.substring(start, p).trim(), defaultPackage);
   1.170 +			start = p + 1;
   1.171 +			}
   1.172 +		sb.append(s);
   1.173 +		} while(p != -1);
   1.174 +	sb.append(')');
   1.175 +	sb.append(map(returnType, defaultPackage));
   1.176 +	return new Method(methodName, sb.toString());
   1.177 +}
   1.178 +
   1.179 +private static String map(final String type, final boolean defaultPackage){
   1.180 +	if(type.equals(""))
   1.181 +		{
   1.182 +		return type;
   1.183 +		}
   1.184 +
   1.185 +	StringBuffer sb = new StringBuffer();
   1.186 +	int index = 0;
   1.187 +	while((index = type.indexOf("[]", index) + 1) > 0)
   1.188 +		{
   1.189 +		sb.append('[');
   1.190 +		}
   1.191 +
   1.192 +	String t = type.substring(0, type.length() - sb.length() * 2);
   1.193 +	String desc = (String) DESCRIPTORS.get(t);
   1.194 +	if(desc != null)
   1.195 +		{
   1.196 +		sb.append(desc);
   1.197 +		}
   1.198 +	else
   1.199 +		{
   1.200 +		sb.append('L');
   1.201 +		if(t.indexOf('.') < 0)
   1.202 +			{
   1.203 +			if(!defaultPackage)
   1.204 +				{
   1.205 +				sb.append("java/lang/");
   1.206 +				}
   1.207 +			sb.append(t);
   1.208 +			}
   1.209 +		else
   1.210 +			{
   1.211 +			sb.append(t.replace('.', '/'));
   1.212 +			}
   1.213 +		sb.append(';');
   1.214 +		}
   1.215 +	return sb.toString();
   1.216 +}
   1.217 +
   1.218 +/**
   1.219 + * Returns the name of the method described by this object.
   1.220 + *
   1.221 + * @return the name of the method described by this object.
   1.222 + */
   1.223 +public String getName(){
   1.224 +	return name;
   1.225 +}
   1.226 +
   1.227 +/**
   1.228 + * Returns the descriptor of the method described by this object.
   1.229 + *
   1.230 + * @return the descriptor of the method described by this object.
   1.231 + */
   1.232 +public String getDescriptor(){
   1.233 +	return desc;
   1.234 +}
   1.235 +
   1.236 +/**
   1.237 + * Returns the return type of the method described by this object.
   1.238 + *
   1.239 + * @return the return type of the method described by this object.
   1.240 + */
   1.241 +public Type getReturnType(){
   1.242 +	return Type.getReturnType(desc);
   1.243 +}
   1.244 +
   1.245 +/**
   1.246 + * Returns the argument types of the method described by this object.
   1.247 + *
   1.248 + * @return the argument types of the method described by this object.
   1.249 + */
   1.250 +public Type[] getArgumentTypes(){
   1.251 +	return Type.getArgumentTypes(desc);
   1.252 +}
   1.253 +
   1.254 +public String toString(){
   1.255 +	return name + desc;
   1.256 +}
   1.257 +
   1.258 +public boolean equals(final Object o){
   1.259 +	if(!(o instanceof Method))
   1.260 +		{
   1.261 +		return false;
   1.262 +		}
   1.263 +	Method other = (Method) o;
   1.264 +	return name.equals(other.name) && desc.equals(other.desc);
   1.265 +}
   1.266 +
   1.267 +public int hashCode(){
   1.268 +	return name.hashCode() ^ desc.hashCode();
   1.269 +}
   1.270 +}
   1.271 \ No newline at end of file