jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/classfile/Signature.java@4868a36f6fd8 (annotated)

src/share/classes/com/sun/tools/classfile/Signature.java@4868a36f6fd8 (annotated)

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

Tue, 28 Dec 2010 15:54:52 -0800

author: ohair
date: Tue, 28 Dec 2010 15:54:52 -0800
changeset 798: 4868a36f6fd8
parent 581: f2fdd52e4e87
child 972: 694ff82ca68e
permissions: -rw-r--r--

6962318: Update copyright year
Reviewed-by: xdono

 /*
  * Copyright (c) 2007, 2008, 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.util.ArrayList;
 import java.util.List;
 import com.sun.tools.classfile.Type.*;
 /**
  * See JVMS3 4.4.4.
  *
  *  <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 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 {
         MethodType m = (MethodType) getType(constant_pool);
         return m.paramTypes.size();
     }
     @Override
     public String getParameterTypes(ConstantPool constant_pool) throws ConstantPoolException {
         MethodType m = (MethodType) getType(constant_pool);
         StringBuilder sb = new StringBuilder();
         sb.append("(");
         String sep = "";
         for (Type paramType: m.paramTypes) {
             sb.append(sep);
             sb.append(paramType);
             sep = ", ";
         }
         sb.append(")");
         return sb.toString();
     }
     @Override
     public String getReturnType(ConstantPool constant_pool) throws ConstantPoolException {
         MethodType m = (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<TypeParamType> typeParamTypes = null;
         if (sig.charAt(sigp) == '<')
             typeParamTypes = parseTypeParamTypes();
         if (sig.charAt(sigp) == '(') {
             List<Type> paramTypes = 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 MethodType(typeParamTypes, paramTypes, returnType, throwsTypes);
         } else {
             Type t = parseTypeSignature();
             if (typeParamTypes == null && sigp == sig.length())
                 return t;
             Type superclass = t;
             List<Type> superinterfaces = null;
             while (sigp < sig.length()) {
                 if (superinterfaces == null)
                     superinterfaces = new ArrayList<Type>();
                 superinterfaces.add(parseTypeSignature());
             }
             return new ClassSigType(typeParamTypes, superclass, superinterfaces);
         }
     }
     private Type parseTypeSignature() {
         switch (sig.charAt(sigp)) {
             case 'B':
                 sigp++;
                 return new SimpleType("byte");
             case 'C':
                 sigp++;
                 return new SimpleType("char");
             case 'D':
                 sigp++;
                 return new SimpleType("double");
             case 'F':
                 sigp++;
                 return new SimpleType("float");
             case 'I':
                 sigp++;
                 return new SimpleType("int");
             case 'J':
                 sigp++;
                 return new SimpleType("long");
             case 'L':
                 return parseClassTypeSignature();
             case 'S':
                 sigp++;
                 return new SimpleType("short");
             case 'T':
                 return parseTypeVariableSignature();
             case 'V':
                 sigp++;
                 return new SimpleType("void");
             case 'Z':
                 sigp++;
                 return new SimpleType("boolean");
             case '[':
                 sigp++;
                 return new ArrayType(parseTypeSignature());
             case '*':
                 sigp++;
                 return new WildcardType();
             case '+':
                 sigp++;
                 return new WildcardType(WildcardType.Kind.EXTENDS, parseTypeSignature());
             case '-':
                 sigp++;
                 return new WildcardType(WildcardType.Kind.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();
         List<Type> argTypes = null;
         ClassType t = null;
         char sigch ;
         do {
             switch  (sigch = sig.charAt(sigp)) {
                 case '<':
                     argTypes = parseTypeSignatures('>');
                     break;
                 case '.':
                 case ';':
                     sigp++;
                     t = new ClassType(t, sb.toString(), argTypes);
                     sb.setLength(0);
                     argTypes = null;
                     break;
                 default:
                     sigp++;
                     sb.append(sigch);
                     break;
             }
         } while (sigch != ';');
         return t;
     }
     private List<TypeParamType> parseTypeParamTypes() {
         assert sig.charAt(sigp) == '<';
         sigp++;
         List<TypeParamType> types = new ArrayList<TypeParamType>();
         while (sig.charAt(sigp) != '>')
             types.add(parseTypeParamType());
         sigp++;
         return types;
     }
     private TypeParamType parseTypeParamType() {
         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 TypeParamType(name, classBound, interfaceBounds);
     }
     private Type parseTypeVariableSignature() {
         sigp++;
         int sep = sig.indexOf(';', sigp);
         Type t = new 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@4868a36f6fd8 (annotated)

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