--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.jdeps/share/classes/com/sun/tools/classfile/Descriptor.java Wed May 27 13:25:18 2015 -0700
@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
+ * 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.
+ */
+
+
+package com.sun.tools.classfile;
+
+import java.io.IOException;
+
+/**
+ * See JVMS, section 4.4.
+ *
+ * <p><b>This is NOT part of any supported API.
+ * If you write code that depends on this, you do so at your own risk.
+ * This code and its internal interfaces are subject to change or
+ * deletion without notice.</b>
+ */
+public class Descriptor {
+ public static class InvalidDescriptor extends DescriptorException {
+ private static final long serialVersionUID = 1L;
+ InvalidDescriptor(String desc) {
+ this.desc = desc;
+ this.index = -1;
+ }
+
+ InvalidDescriptor(String desc, int index) {
+ this.desc = desc;
+ this.index = index;
+ }
+
+ @Override
+ public String getMessage() {
+ // i18n
+ if (index == -1)
+ return "invalid descriptor \"" + desc + "\"";
+ else
+ return "descriptor is invalid at offset " + index + " in \"" + desc + "\"";
+ }
+
+ public final String desc;
+ public final int index;
+
+ }
+
+ public Descriptor(ClassReader cr) throws IOException {
+ this(cr.readUnsignedShort());
+ }
+
+ public Descriptor(int index) {
+ this.index = index;
+
+ }
+
+ public String getValue(ConstantPool constant_pool) throws ConstantPoolException {
+ return constant_pool.getUTF8Value(index);
+ }
+
+ public int getParameterCount(ConstantPool constant_pool)
+ throws ConstantPoolException, InvalidDescriptor {
+ String desc = getValue(constant_pool);
+ int end = desc.indexOf(")");
+ if (end == -1)
+ throw new InvalidDescriptor(desc);
+ parse(desc, 0, end + 1);
+ return count;
+
+ }
+
+ public String getParameterTypes(ConstantPool constant_pool)
+ throws ConstantPoolException, InvalidDescriptor {
+ String desc = getValue(constant_pool);
+ int end = desc.indexOf(")");
+ if (end == -1)
+ throw new InvalidDescriptor(desc);
+ return parse(desc, 0, end + 1);
+ }
+
+ public String getReturnType(ConstantPool constant_pool)
+ throws ConstantPoolException, InvalidDescriptor {
+ String desc = getValue(constant_pool);
+ int end = desc.indexOf(")");
+ if (end == -1)
+ throw new InvalidDescriptor(desc);
+ return parse(desc, end + 1, desc.length());
+ }
+
+ public String getFieldType(ConstantPool constant_pool)
+ throws ConstantPoolException, InvalidDescriptor {
+ String desc = getValue(constant_pool);
+ return parse(desc, 0, desc.length());
+ }
+
+ private String parse(String desc, int start, int end)
+ throws InvalidDescriptor {
+ int p = start;
+ StringBuilder sb = new StringBuilder();
+ int dims = 0;
+ count = 0;
+
+ while (p < end) {
+ String type;
+ char ch;
+ switch (ch = desc.charAt(p++)) {
+ case '(':
+ sb.append('(');
+ continue;
+
+ case ')':
+ sb.append(')');
+ continue;
+
+ case '[':
+ dims++;
+ continue;
+
+ case 'B':
+ type = "byte";
+ break;
+
+ case 'C':
+ type = "char";
+ break;
+
+ case 'D':
+ type = "double";
+ break;
+
+ case 'F':
+ type = "float";
+ break;
+
+ case 'I':
+ type = "int";
+ break;
+
+ case 'J':
+ type = "long";
+ break;
+
+ case 'L':
+ int sep = desc.indexOf(';', p);
+ if (sep == -1)
+ throw new InvalidDescriptor(desc, p - 1);
+ type = desc.substring(p, sep).replace('/', '.');
+ p = sep + 1;
+ break;
+
+ case 'S':
+ type = "short";
+ break;
+
+ case 'Z':
+ type = "boolean";
+ break;
+
+ case 'V':
+ type = "void";
+ break;
+
+ default:
+ throw new InvalidDescriptor(desc, p - 1);
+ }
+
+ if (sb.length() > 1 && sb.charAt(0) == '(')
+ sb.append(", ");
+ sb.append(type);
+ for ( ; dims > 0; dims-- )
+ sb.append("[]");
+
+ count++;
+ }
+
+ return sb.toString();
+ }
+
+ public final int index;
+ private int count;
+}