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

src/share/classes/com/sun/tools/javah/TypeSignature.java@4868a36f6fd8 (annotated)

src/share/classes/com/sun/tools/javah/TypeSignature.java

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

author: ohair
date: Tue, 28 Dec 2010 15:54:52 -0800
changeset 798: 4868a36f6fd8
parent 712: a1d31ab7b525
child 1054: 111bbf1ad913
permissions: -rw-r--r--

6962318: Update copyright year
Reviewed-by: xdono

 /*
  * Copyright (c) 2002, 2010, 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.javah;
 import java.util.*;
 import javax.lang.model.element.Name;
 import javax.lang.model.element.TypeElement;
 import javax.lang.model.type.ArrayType;
 import javax.lang.model.type.DeclaredType;
 import javax.lang.model.type.NoType;
 import javax.lang.model.type.PrimitiveType;
 import javax.lang.model.type.TypeKind;
 import javax.lang.model.type.TypeMirror;
 import javax.lang.model.type.TypeVariable;
 import javax.lang.model.type.TypeVisitor;
 import javax.lang.model.util.Elements;
 import javax.lang.model.util.SimpleTypeVisitor7;
 /**
  * Returns internal type signature.
  *
  * <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></p>
  *
  * @author Sucheta Dambalkar
  */
 public class TypeSignature {
     static class SignatureException extends Exception {
         private static final long serialVersionUID = 1L;
         SignatureException(String reason) {
             super(reason);
         }
     }
     Elements elems;
     /* Signature Characters */
     private static final String SIG_VOID                   = "V";
     private static final String SIG_BOOLEAN                = "Z";
     private static final String SIG_BYTE                   = "B";
     private static final String SIG_CHAR                   = "C";
     private static final String SIG_SHORT                  = "S";
     private static final String SIG_INT                    = "I";
     private static final String SIG_LONG                   = "J";
     private static final String SIG_FLOAT                  = "F";
     private static final String SIG_DOUBLE                 = "D";
     private static final String SIG_ARRAY                  = "[";
     private static final String SIG_CLASS                  = "L";
     public TypeSignature(Elements elems){
         this.elems = elems;
     }
     /*
      * Returns the type signature of a field according to JVM specs
      */
     public String getTypeSignature(String javasignature) throws SignatureException {
         return getParamJVMSignature(javasignature);
     }
     /*
      * Returns the type signature of a method according to JVM specs
      */
     public String getTypeSignature(String javasignature, TypeMirror returnType)
             throws SignatureException {
         String signature = null; //Java type signature.
         String typeSignature = null; //Internal type signature.
         List<String> params = new ArrayList<String>(); //List of parameters.
         String paramsig = null; //Java parameter signature.
         String paramJVMSig = null; //Internal parameter signature.
         String returnSig = null; //Java return type signature.
         String returnJVMType = null; //Internal return type signature.
         int dimensions = 0; //Array dimension.
         int startIndex = -1;
         int endIndex = -1;
         StringTokenizer st = null;
         int i = 0;
         // Gets the actual java signature without parentheses.
         if (javasignature != null) {
             startIndex = javasignature.indexOf("(");
             endIndex = javasignature.indexOf(")");
         }
         if (((startIndex != -1) && (endIndex != -1))
             &&(startIndex+1 < javasignature.length())
             &&(endIndex < javasignature.length())) {
             signature = javasignature.substring(startIndex+1, endIndex);
         }
         // Separates parameters.
         if (signature != null) {
             if (signature.indexOf(",") != -1) {
                 st = new StringTokenizer(signature, ",");
                 if (st != null) {
                     while (st.hasMoreTokens()) {
                         params.add(st.nextToken());
                     }
                 }
             } else {
                 params.add(signature);
             }
         }
         /* JVM type signature. */
         typeSignature = "(";
         // Gets indivisual internal parameter signature.
         while (params.isEmpty() != true) {
             paramsig = params.remove(i).trim();
             paramJVMSig  = getParamJVMSignature(paramsig);
             if (paramJVMSig != null) {
                 typeSignature += paramJVMSig;
             }
         }
         typeSignature += ")";
         // Get internal return type signature.
         returnJVMType = "";
         if (returnType != null) {
             dimensions = dimensions(returnType);
         }
         //Gets array dimension of return type.
         while (dimensions-- > 0) {
             returnJVMType += "[";
         }
         if (returnType != null) {
             returnSig = qualifiedTypeName(returnType);
             returnJVMType += getComponentType(returnSig);
         } else {
             System.out.println("Invalid return type.");
         }
         typeSignature += returnJVMType;
         return typeSignature;
     }
     /*
      * Returns internal signature of a parameter.
      */
     private String getParamJVMSignature(String paramsig) throws SignatureException {
         String paramJVMSig = "";
         String componentType ="";
         if(paramsig != null){
             if(paramsig.indexOf("[]") != -1) {
                 // Gets array dimension.
                 int endindex = paramsig.indexOf("[]");
                 componentType = paramsig.substring(0, endindex);
                 String dimensionString =  paramsig.substring(endindex);
                 if(dimensionString != null){
                     while(dimensionString.indexOf("[]") != -1){
                         paramJVMSig += "[";
                         int beginindex = dimensionString.indexOf("]") + 1;
                         if(beginindex < dimensionString.length()){
                             dimensionString = dimensionString.substring(beginindex);
                         }else
                             dimensionString = "";
                     }
                 }
             } else componentType = paramsig;
             paramJVMSig += getComponentType(componentType);
         }
         return paramJVMSig;
     }
     /*
      * Returns internal signature of a component.
      */
     private String getComponentType(String componentType) throws SignatureException {
         String JVMSig = "";
         if(componentType != null){
             if(componentType.equals("void")) JVMSig += SIG_VOID ;
             else if(componentType.equals("boolean"))  JVMSig += SIG_BOOLEAN ;
             else if(componentType.equals("byte")) JVMSig += SIG_BYTE ;
             else if(componentType.equals("char"))  JVMSig += SIG_CHAR ;
             else if(componentType.equals("short"))  JVMSig += SIG_SHORT ;
             else if(componentType.equals("int"))  JVMSig += SIG_INT ;
             else if(componentType.equals("long"))  JVMSig += SIG_LONG ;
             else if(componentType.equals("float")) JVMSig += SIG_FLOAT ;
             else if(componentType.equals("double"))  JVMSig += SIG_DOUBLE ;
             else {
                 if(!componentType.equals("")){
                     TypeElement classNameDoc = elems.getTypeElement(componentType);
                     if(classNameDoc == null){
                         throw new SignatureException(componentType);
                     }else {
                         String classname = classNameDoc.getQualifiedName().toString();
                         String newclassname = classname.replace('.', '/');
                         JVMSig += "L";
                         JVMSig += newclassname;
                         JVMSig += ";";
                     }
                 }
             }
         }
         return JVMSig;
     }
     int dimensions(TypeMirror t) {
         if (t.getKind() != TypeKind.ARRAY)
             return 0;
         return 1 + dimensions(((ArrayType) t).getComponentType());
     }
     String qualifiedTypeName(TypeMirror type) {
         TypeVisitor<Name, Void> v = new SimpleTypeVisitor7<Name, Void>() {
             @Override
             public Name visitArray(ArrayType t, Void p) {
                 return t.getComponentType().accept(this, p);
             }
             @Override
             public Name visitDeclared(DeclaredType t, Void p) {
                 return ((TypeElement) t.asElement()).getQualifiedName();
             }
             @Override
             public Name visitPrimitive(PrimitiveType t, Void p) {
                 return elems.getName(t.toString());
             }
             @Override
             public Name visitNoType(NoType t, Void p) {
                 if (t.getKind() == TypeKind.VOID)
                     return elems.getName("void");
                 return defaultAction(t, p);
             }
             @Override
             public Name visitTypeVariable(TypeVariable t, Void p) {
                 return t.getUpperBound().accept(this, p);
             }
         };
         return v.visit(type).toString();
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javah/TypeSignature.java@4868a36f6fd8 (annotated)

src/share/classes/com/sun/tools/javah/TypeSignature.java