jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javah/Mangle.java@9a7c998bf2fc (annotated)

src/share/classes/com/sun/tools/javah/Mangle.java@9a7c998bf2fc (annotated)

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

Wed, 02 Jun 2010 19:08:47 -0700

author: darcy
date: Wed, 02 Jun 2010 19:08:47 -0700
changeset 575: 9a7c998bf2fc
parent 554: 9d9f26857129
child 581: f2fdd52e4e87
permissions: -rw-r--r--

6933147: Provided new utility visitors supporting SourceVersion.RELEASE_7
Reviewed-by: jjg

 /*
  * Copyright (c) 2002, 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.javah;
 import javax.lang.model.element.ExecutableElement;
 import javax.lang.model.element.TypeElement;
 import javax.lang.model.element.VariableElement;
 import javax.lang.model.util.Elements;
 import javax.lang.model.util.Types;
 /**
  * A utility for mangling java identifiers into C names.  Should make
  * this more fine grained and distribute the functionality to the
  * generators.
  *
  * <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></p>
  *
  * @author  Sucheta Dambalkar(Revised)
  */
 public class Mangle {
     public static class Type {
         public static final int CLASS            = 1;
         public static final int FIELDSTUB        = 2;
         public static final int FIELD            = 3;
         public static final int JNI              = 4;
         public static final int SIGNATURE        = 5;
         public static final int METHOD_JDK_1     = 6;
         public static final int METHOD_JNI_SHORT = 7;
         public static final int METHOD_JNI_LONG  = 8;
     };
     private Elements elems;
     private Types types;
     Mangle(Elements elems, Types types) {
         this.elems = elems;
         this.types = types;
     }
     public final String mangle(CharSequence name, int mtype) {
         StringBuffer result = new StringBuffer(100);
         int length = name.length();
         for (int i = 0; i < length; i++) {
             char ch = name.charAt(i);
             if (isalnum(ch)) {
                 result.append(ch);
             } else if ((ch == '.') &&
                        mtype == Mangle.Type.CLASS) {
                 result.append('_');
             } else if (( ch == '$') &&
                        mtype == Mangle.Type.CLASS) {
                 result.append('_');
                 result.append('_');
             } else if (ch == '_' && mtype == Mangle.Type.FIELDSTUB) {
                 result.append('_');
             } else if (ch == '_' && mtype == Mangle.Type.CLASS) {
                 result.append('_');
             } else if (mtype == Mangle.Type.JNI) {
                 String esc = null;
                 if (ch == '_')
                     esc = "_1";
                 else if (ch == '.')
                     esc = "_";
                 else if (ch == ';')
                     esc = "_2";
                 else if (ch == '[')
                     esc = "_3";
                 if (esc != null) {
                     result.append(esc);
                 } else {
                     result.append(mangleChar(ch));
                 }
             } else if (mtype == Mangle.Type.SIGNATURE) {
                 if (isprint(ch)) {
                     result.append(ch);
                 } else {
                     result.append(mangleChar(ch));
                 }
             } else {
                 result.append(mangleChar(ch));
             }
         }
         return result.toString();
     }
     public String mangleMethod(ExecutableElement method, TypeElement clazz,
                                       int mtype) {
         StringBuffer result = new StringBuffer(100);
         result.append("Java_");
         if (mtype == Mangle.Type.METHOD_JDK_1) {
             result.append(mangle(clazz.getQualifiedName(), Mangle.Type.CLASS));
             result.append('_');
             result.append(mangle(method.getSimpleName(),
                                  Mangle.Type.FIELD));
             result.append("_stub");
             return result.toString();
         }
         /* JNI */
         result.append(mangle(getInnerQualifiedName(clazz), Mangle.Type.JNI));
         result.append('_');
         result.append(mangle(method.getSimpleName(),
                              Mangle.Type.JNI));
         if (mtype == Mangle.Type.METHOD_JNI_LONG) {
             result.append("__");
             String typesig = signature(method);
             TypeSignature newTypeSig = new TypeSignature(elems);
             String sig = newTypeSig.getTypeSignature(typesig,  method.getReturnType());
             sig = sig.substring(1);
             sig = sig.substring(0, sig.lastIndexOf(')'));
             sig = sig.replace('/', '.');
             result.append(mangle(sig, Mangle.Type.JNI));
         }
         return result.toString();
     }
     //where
         private String getInnerQualifiedName(TypeElement clazz) {
             return elems.getBinaryName(clazz).toString();
         }
     public final String mangleChar(char ch) {
         String s = Integer.toHexString(ch);
         int nzeros = 5 - s.length();
         char[] result = new char[6];
         result[0] = '_';
         for (int i = 1; i <= nzeros; i++)
             result[i] = '0';
         for (int i = nzeros+1, j = 0; i < 6; i++, j++)
             result[i] = s.charAt(j);
         return new String(result);
     }
     // Warning: duplicated in Gen
     private String signature(ExecutableElement e) {
         StringBuffer sb = new StringBuffer();
         String sep = "(";
         for (VariableElement p: e.getParameters()) {
             sb.append(sep);
             sb.append(types.erasure(p.asType()).toString());
             sep = ",";
         }
         sb.append(")");
         return sb.toString();
     }
     /* Warning: Intentional ASCII operation. */
     private static final boolean isalnum(char ch) {
         return ch <= 0x7f && /* quick test */
             ((ch >= 'A' && ch <= 'Z') ||
              (ch >= 'a' && ch <= 'z') ||
              (ch >= '0' && ch <= '9'));
     }
     /* Warning: Intentional ASCII operation. */
     private static final boolean isprint(char ch) {
         return ch >= 32 && ch <= 126;
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javah/Mangle.java@9a7c998bf2fc (annotated)

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