jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/classfile/Signature.java@7708bd6d800d (annotated)

src/share/classes/com/sun/tools/classfile/Signature.java@7708bd6d800d (annotated)

src/share/classes/com/sun/tools/classfile/Signature.java

Tue, 03 Jun 2008 13:26:47 -0700

author: jjg
date: Tue, 03 Jun 2008 13:26:47 -0700
changeset 46: 7708bd6d800d
child 54: eaf608c64fec
permissions: -rw-r--r--

4075303: Use javap to enquire aboput a specific inner class
4348375: Javap is not internationalized
4459541: "javap -l" shows line numbers as signed short; they should be unsigned
4501660: change diagnostic of -help as 'print this help message and exit'
4776241: unused source file in javap...
4870651: javap should recognize generics, varargs, enum
4876942: javap invoked without args does not print help screen
4880663: javap could output whitespace between class name and opening brace
4975569: javap doesn't print new flag bits
6271787: javap dumps LocalVariableTypeTable attribute in hex, needs to print a table
6305779: javap: support annotations
6439940: Clean up javap implementation
6469569: wrong check of searchpath in JavapEnvironment
6474890: javap does not open .zip files in -classpath
6587786: Javap throws error : "ERROR:Could not find <classname>" for JRE classes
6622215: javap ignores certain relevant access flags
6622216: javap names some attributes incorrectly
6622232: javap gets whitespace confused
6622260: javap prints negative bytes incorrectly in hex
Reviewed-by: ksrini

 /*
  * Copyright 2007 Sun Microsystems, Inc.  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.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */
 package com.sun.tools.classfile;
 import java.util.ArrayList;
 import java.util.List;
 /**
  * See JVMS3 4.4.4.
  *
  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  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 Signature extends Descriptor {
     public Signature(int index) {
         super(index);
     }
     public Type getType(ConstantPool constant_pool) throws ConstantPoolException {
         if (type == null)
             type = parse(getValue(constant_pool));
         return type;
     }
     @Override
     public int getParameterCount(ConstantPool constant_pool) throws ConstantPoolException {
         Type.MethodType m = (Type.MethodType) getType(constant_pool);
         return m.argTypes.size();
     }
     @Override
     public String getParameterTypes(ConstantPool constant_pool) throws ConstantPoolException {
         Type.MethodType m = (Type.MethodType) getType(constant_pool);
         StringBuilder sb = new StringBuilder();
         sb.append("(");
         String sep = "";
         for (Type argType: m.argTypes) {
             sb.append(sep);
             sb.append(argType);
             sep = ", ";
         }
         sb.append(")");
         return sb.toString();
     }
     @Override
     public String getReturnType(ConstantPool constant_pool) throws ConstantPoolException {
         Type.MethodType m = (Type.MethodType) getType(constant_pool);
         return m.returnType.toString();
     }
     @Override
     public String getFieldType(ConstantPool constant_pool) throws ConstantPoolException {
         return getType(constant_pool).toString();
     }
     private Type parse(String sig) {
         this.sig = sig;
         sigp = 0;
         List<Type> typeArgTypes = null;
         if (sig.charAt(sigp) == '<')
             typeArgTypes = parseTypeArgTypes();
         if (sig.charAt(sigp) == '(') {
             List<Type> argTypes = parseTypeSignatures(')');
             Type returnType = parseTypeSignature();
             List<Type> throwsTypes = null;
             while (sigp < sig.length() && sig.charAt(sigp) == '^') {
                 sigp++;
                 if (throwsTypes == null)
                     throwsTypes = new ArrayList<Type>();
                 throwsTypes.add(parseTypeSignature());
             }
             return new Type.MethodType(typeArgTypes, argTypes, returnType, throwsTypes);
         } else {
             Type t = parseTypeSignature();
             if (typeArgTypes == null && sigp == sig.length())
                 return t;
             Type superclass = t;
             List<Type> superinterfaces = new ArrayList<Type>();
             while (sigp < sig.length())
                 superinterfaces.add(parseTypeSignature());
             return new Type.ClassSigType(typeArgTypes, superclass, superinterfaces);
         }
     }
     private Type parseTypeSignature() {
         switch (sig.charAt(sigp)) {
             case 'B':
                 sigp++;
                 return new Type.SimpleType("byte");
             case 'C':
                 sigp++;
                 return new Type.SimpleType("char");
             case 'D':
                 sigp++;
                 return new Type.SimpleType("double");
             case 'F':
                 sigp++;
                 return new Type.SimpleType("float");
             case 'I':
                 sigp++;
                 return new Type.SimpleType("int");
             case 'J':
                 sigp++;
                 return new Type.SimpleType("long");
             case 'L':
                 return parseClassTypeSignature();
             case 'S':
                 sigp++;
                 return new Type.SimpleType("short");
             case 'T':
                 return parseTypeVariableSignature();
             case 'V':
                 sigp++;
                 return new Type.SimpleType("void");
             case 'Z':
                 sigp++;
                 return new Type.SimpleType("boolean");
             case '[':
                 sigp++;
                 return new Type.ArrayType(parseTypeSignature());
             case '*':
                 sigp++;
                 return new Type.WildcardType();
             case '+':
                 sigp++;
                 return new Type.WildcardType("extends", parseTypeSignature());
             case '-':
                 sigp++;
                 return new Type.WildcardType("super", parseTypeSignature());
             default:
                 throw new IllegalStateException(debugInfo());
         }
     }
     private List<Type> parseTypeSignatures(char term) {
         sigp++;
         List<Type> types = new ArrayList<Type>();
         while (sig.charAt(sigp) != term)
             types.add(parseTypeSignature());
         sigp++;
         return types;
     }
     private Type parseClassTypeSignature() {
         assert sig.charAt(sigp) == 'L';
         sigp++;
         return parseClassTypeSignatureRest();
     }
     private Type parseClassTypeSignatureRest() {
         StringBuilder sb = new StringBuilder();
         Type t = null;
         char sigch;
         while (true) {
             switch  (sigch = sig.charAt(sigp)) {
                 case '/':
                     sigp++;
                     sb.append(".");
                     break;
                 case '.':
                     sigp++;
                     if (t == null)
                         t = new Type.SimpleType(sb.toString());
                     return new Type.InnerClassType(t, parseClassTypeSignatureRest());
                 case ';':
                     sigp++;
                     if (t == null)
                         t = new Type.SimpleType(sb.toString());
                     return t;
                 case '<':
                     List<Type> argTypes = parseTypeSignatures('>');
                     t = new Type.ClassType(sb.toString(), argTypes);
                     break;
                 default:
                     sigp++;
                     sb.append(sigch);
                     break;
             }
         }
     }
     private List<Type> parseTypeArgTypes() {
         assert sig.charAt(sigp) == '<';
         sigp++;
         List<Type> types = null;
         types = new ArrayList<Type>();
         while (sig.charAt(sigp) != '>')
             types.add(parseTypeArgType());
         sigp++;
         return types;
     }
     private Type parseTypeArgType() {
         int sep = sig.indexOf(":", sigp);
         String name = sig.substring(sigp, sep);
         Type classBound = null;
         List<Type> interfaceBounds = null;
         sigp = sep + 1;
         if (sig.charAt(sigp) != ':')
             classBound = parseTypeSignature();
         while (sig.charAt(sigp) == ':') {
             sigp++;
             if (interfaceBounds == null)
                 interfaceBounds = new ArrayList<Type>();
             interfaceBounds.add(parseTypeSignature());
         }
         return new Type.TypeArgType(name, classBound, interfaceBounds);
     }
     private Type parseTypeVariableSignature() {
         sigp++;
         int sep = sig.indexOf(';', sigp);
         Type t = new Type.SimpleType(sig.substring(sigp, sep));
         sigp = sep + 1;
         return t;
     }
     private String debugInfo() {
         return sig.substring(0, sigp) + "!" + sig.charAt(sigp) + "!" + sig.substring(sigp+1);
     }
     private String sig;
     private int sigp;
     private Type type;
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/classfile/Signature.java@7708bd6d800d (annotated)

src/share/classes/com/sun/tools/classfile/Signature.java