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src/java.base/share/classes/sun/invoke/util/BytecodeDescriptor.java

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  1 /*
  2  * Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.  Oracle designates this
  8  * particular file as subject to the "Classpath" exception as provided
  9  * by Oracle in the LICENSE file that accompanied this code.
 10  *
 11  * This code is distributed in the hope that it will be useful, but WITHOUT
 12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 14  * version 2 for more details (a copy is included in the LICENSE file that
 15  * accompanied this code).
 16  *
 17  * You should have received a copy of the GNU General Public License version
 18  * 2 along with this work; if not, write to the Free Software Foundation,
 19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 20  *
 21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 22  * or visit www.oracle.com if you need additional information or have any

 67             parseError(str, "not a method type");
 68         }
 69         Class<?> rtype = parseSig(str, i, end, loader);
 70         if (rtype == null || i[0] != end)
 71             parseError(str, "bad return type");
 72         ptypes.add(rtype);
 73         return ptypes;
 74     }
 75 
 76     private static void parseError(String str, String msg) {
 77         throw new IllegalArgumentException("bad signature: "+str+": "+msg);
 78     }
 79 
 80     /**
 81      * @param loader the class loader in which to look up the types (null means
 82      *               bootstrap class loader)
 83      */
 84     private static Class<?> parseSig(String str, int[] i, int end, ClassLoader loader) {
 85         if (i[0] == end)  return null;
 86         char c = str.charAt(i[0]++);
 87         if (c == 'L') {
 88             int begc = i[0], endc = str.indexOf(';', begc);
 89             if (endc < 0)  return null;
 90             i[0] = endc+1;
 91             String name = str.substring(begc, endc).replace('/', '.');
 92             try {
 93                 return Class.forName(name, false, loader);

 94             } catch (ClassNotFoundException ex) {
 95                 throw new TypeNotPresentException(name, ex);
 96             }
 97         } else if (c == '[') {
 98             Class<?> t = parseSig(str, i, end, loader);
 99             if (t != null)
100                 t = java.lang.reflect.Array.newInstance(t, 0).getClass();
101             return t;
102         } else {
103             return Wrapper.forBasicType(c).primitiveType();
104         }
105     }
106 
107     public static String unparse(Class<?> type) {
108         if (type == Object.class) {
109             return "Ljava/lang/Object;";
110         } else if (type == int.class) {
111             return "I";
112         }
113         return type.descriptorString();

  1 /*
  2  * Copyright (c) 2008, 2020, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.  Oracle designates this
  8  * particular file as subject to the "Classpath" exception as provided
  9  * by Oracle in the LICENSE file that accompanied this code.
 10  *
 11  * This code is distributed in the hope that it will be useful, but WITHOUT
 12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 14  * version 2 for more details (a copy is included in the LICENSE file that
 15  * accompanied this code).
 16  *
 17  * You should have received a copy of the GNU General Public License version
 18  * 2 along with this work; if not, write to the Free Software Foundation,
 19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 20  *
 21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 22  * or visit www.oracle.com if you need additional information or have any

 67             parseError(str, "not a method type");
 68         }
 69         Class<?> rtype = parseSig(str, i, end, loader);
 70         if (rtype == null || i[0] != end)
 71             parseError(str, "bad return type");
 72         ptypes.add(rtype);
 73         return ptypes;
 74     }
 75 
 76     private static void parseError(String str, String msg) {
 77         throw new IllegalArgumentException("bad signature: "+str+": "+msg);
 78     }
 79 
 80     /**
 81      * @param loader the class loader in which to look up the types (null means
 82      *               bootstrap class loader)
 83      */
 84     private static Class<?> parseSig(String str, int[] i, int end, ClassLoader loader) {
 85         if (i[0] == end)  return null;
 86         char c = str.charAt(i[0]++);
 87         if (c == 'L' || c == 'Q') {
 88             int begc = i[0], endc = str.indexOf(';', begc);
 89             if (endc < 0)  return null;
 90             i[0] = endc+1;
 91             String name = str.substring(begc, endc).replace('/', '.');
 92             try {
 93                 Class<?> clz = Class.forName(name, false, loader);
 94                 return c == 'Q' ? clz.asValueType() : clz.asPrimaryType();
 95             } catch (ClassNotFoundException ex) {
 96                 throw new TypeNotPresentException(name, ex);
 97             }
 98         } else if (c == '[') {
 99             Class<?> t = parseSig(str, i, end, loader);
100             if (t != null)
101                 t = java.lang.reflect.Array.newInstance(t, 0).getClass();
102             return t;
103         } else {
104             return Wrapper.forBasicType(c).primitiveType();
105         }
106     }
107 
108     public static String unparse(Class<?> type) {
109         if (type == Object.class) {
110             return "Ljava/lang/Object;";
111         } else if (type == int.class) {
112             return "I";
113         }
114         return type.descriptorString();
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