1.1 --- a/rt/emul/compact/src/main/java/sun/invoke/util/BytecodeDescriptor.java Sun Aug 17 20:09:05 2014 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,137 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
1.6 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 - *
1.8 - * This code is free software; you can redistribute it and/or modify it
1.9 - * under the terms of the GNU General Public License version 2 only, as
1.10 - * published by the Free Software Foundation. Oracle designates this
1.11 - * particular file as subject to the "Classpath" exception as provided
1.12 - * by Oracle in the LICENSE file that accompanied this code.
1.13 - *
1.14 - * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 - * version 2 for more details (a copy is included in the LICENSE file that
1.18 - * accompanied this code).
1.19 - *
1.20 - * You should have received a copy of the GNU General Public License version
1.21 - * 2 along with this work; if not, write to the Free Software Foundation,
1.22 - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 - *
1.24 - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 - * or visit www.oracle.com if you need additional information or have any
1.26 - * questions.
1.27 - */
1.28 -
1.29 -package sun.invoke.util;
1.30 -
1.31 -import java.lang.invoke.MethodType;
1.32 -import java.util.ArrayList;
1.33 -import java.util.List;
1.34 -
1.35 -/**
1.36 - * Utility routines for dealing with bytecode-level signatures.
1.37 - * @author jrose
1.38 - */
1.39 -public class BytecodeDescriptor {
1.40 -
1.41 - private BytecodeDescriptor() { } // cannot instantiate
1.42 -
1.43 - public static List<Class<?>> parseMethod(String bytecodeSignature, ClassLoader loader) {
1.44 - return parseMethod(bytecodeSignature, 0, bytecodeSignature.length(), loader);
1.45 - }
1.46 -
1.47 - static List<Class<?>> parseMethod(String bytecodeSignature,
1.48 - int start, int end, ClassLoader loader) {
1.49 - if (loader == null)
1.50 - loader = ClassLoader.getSystemClassLoader();
1.51 - String str = bytecodeSignature;
1.52 - int[] i = {start};
1.53 - ArrayList<Class<?>> ptypes = new ArrayList<Class<?>>();
1.54 - if (i[0] < end && str.charAt(i[0]) == '(') {
1.55 - ++i[0]; // skip '('
1.56 - while (i[0] < end && str.charAt(i[0]) != ')') {
1.57 - Class<?> pt = parseSig(str, i, end, loader);
1.58 - if (pt == null || pt == void.class)
1.59 - parseError(str, "bad argument type");
1.60 - ptypes.add(pt);
1.61 - }
1.62 - ++i[0]; // skip ')'
1.63 - } else {
1.64 - parseError(str, "not a method type");
1.65 - }
1.66 - Class<?> rtype = parseSig(str, i, end, loader);
1.67 - if (rtype == null || i[0] != end)
1.68 - parseError(str, "bad return type");
1.69 - ptypes.add(rtype);
1.70 - return ptypes;
1.71 - }
1.72 -
1.73 - static private void parseError(String str, String msg) {
1.74 - throw new IllegalArgumentException("bad signature: "+str+": "+msg);
1.75 - }
1.76 -
1.77 - static private Class<?> parseSig(String str, int[] i, int end, ClassLoader loader) {
1.78 - if (i[0] == end) return null;
1.79 - char c = str.charAt(i[0]++);
1.80 - if (c == 'L') {
1.81 - int begc = i[0], endc = str.indexOf(';', begc);
1.82 - if (endc < 0) return null;
1.83 - i[0] = endc+1;
1.84 - String name = str.substring(begc, endc).replace('/', '.');
1.85 - try {
1.86 - return loader.loadClass(name);
1.87 - } catch (ClassNotFoundException ex) {
1.88 - throw new TypeNotPresentException(name, ex);
1.89 - }
1.90 - } else if (c == '[') {
1.91 - Class<?> t = parseSig(str, i, end, loader);
1.92 - if (t != null)
1.93 - t = java.lang.reflect.Array.newInstance(t, 0).getClass();
1.94 - return t;
1.95 - } else {
1.96 - return Wrapper.forBasicType(c).primitiveType();
1.97 - }
1.98 - }
1.99 -
1.100 - public static String unparse(Class<?> type) {
1.101 - StringBuilder sb = new StringBuilder();
1.102 - unparseSig(type, sb);
1.103 - return sb.toString();
1.104 - }
1.105 -
1.106 - public static String unparse(MethodType type) {
1.107 - return unparseMethod(type.returnType(), type.parameterList());
1.108 - }
1.109 -
1.110 - public static String unparse(Object type) {
1.111 - if (type instanceof Class<?>)
1.112 - return unparse((Class<?>) type);
1.113 - if (type instanceof MethodType)
1.114 - return unparse((MethodType) type);
1.115 - return (String) type;
1.116 - }
1.117 -
1.118 - public static String unparseMethod(Class<?> rtype, List<Class<?>> ptypes) {
1.119 - StringBuilder sb = new StringBuilder();
1.120 - sb.append('(');
1.121 - for (Class<?> pt : ptypes)
1.122 - unparseSig(pt, sb);
1.123 - sb.append(')');
1.124 - unparseSig(rtype, sb);
1.125 - return sb.toString();
1.126 - }
1.127 -
1.128 - static private void unparseSig(Class<?> t, StringBuilder sb) {
1.129 - char c = Wrapper.forBasicType(t).basicTypeChar();
1.130 - if (c != 'L') {
1.131 - sb.append(c);
1.132 - } else {
1.133 - boolean lsemi = (!t.isArray());
1.134 - if (lsemi) sb.append('L');
1.135 - sb.append(t.getName().replace('.', '/'));
1.136 - if (lsemi) sb.append(';');
1.137 - }
1.138 - }
1.139 -
1.140 -}