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. - */ -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; -} --- /dev/null 2015-04-26 22:05:36.465433038 -0700 +++ new/langtools/src/jdk.jdeps/share/classes/com/sun/tools/classfile/Descriptor.java 2015-05-26 21:42:21.531832854 -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. + * + *
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. + */ +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; +}