1 /*

     2  * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package sun.reflect;

    27 

    28 import java.lang.reflect.Field;

    29 import java.lang.reflect.Modifier;

    30 

    31 class UnsafeFieldAccessorFactory {

    32     static FieldAccessor newFieldAccessor(Field field, boolean override) {

    33         Class<?> type = field.getType();

    34         boolean isStatic = Modifier.isStatic(field.getModifiers());

    35         boolean isFinal = Modifier.isFinal(field.getModifiers());

    36         boolean isVolatile = Modifier.isVolatile(field.getModifiers());

    37         boolean isQualified = isFinal || isVolatile;

    38         boolean isReadOnly = isFinal && (isStatic || !override);

    39         if (isStatic) {

    40             // This code path does not guarantee that the field's

    41             // declaring class has been initialized, but it must be

    42             // before performing reflective operations.

    43             UnsafeFieldAccessorImpl.unsafe.ensureClassInitialized(field.getDeclaringClass());

    44 

    45             if (!isQualified) {

    46                 if (type == Boolean.TYPE) {

    47                     return new UnsafeStaticBooleanFieldAccessorImpl(field);

    48                 } else if (type == Byte.TYPE) {

    49                     return new UnsafeStaticByteFieldAccessorImpl(field);

    50                 } else if (type == Short.TYPE) {

    51                     return new UnsafeStaticShortFieldAccessorImpl(field);

    52                 } else if (type == Character.TYPE) {

    53                     return new UnsafeStaticCharacterFieldAccessorImpl(field);

    54                 } else if (type == Integer.TYPE) {

    55                     return new UnsafeStaticIntegerFieldAccessorImpl(field);

    56                 } else if (type == Long.TYPE) {

    57                     return new UnsafeStaticLongFieldAccessorImpl(field);

    58                 } else if (type == Float.TYPE) {

    59                     return new UnsafeStaticFloatFieldAccessorImpl(field);

    60                 } else if (type == Double.TYPE) {

    61                     return new UnsafeStaticDoubleFieldAccessorImpl(field);

    62                 } else {

    63                     return new UnsafeStaticObjectFieldAccessorImpl(field);

    64                 }

    65             } else {

    66                 if (type == Boolean.TYPE) {

    67                     return new UnsafeQualifiedStaticBooleanFieldAccessorImpl(field, isReadOnly);

    68                 } else if (type == Byte.TYPE) {

    69                     return new UnsafeQualifiedStaticByteFieldAccessorImpl(field, isReadOnly);

    70                 } else if (type == Short.TYPE) {

    71                     return new UnsafeQualifiedStaticShortFieldAccessorImpl(field, isReadOnly);

    72                 } else if (type == Character.TYPE) {

    73                     return new UnsafeQualifiedStaticCharacterFieldAccessorImpl(field, isReadOnly);

    74                 } else if (type == Integer.TYPE) {

    75                     return new UnsafeQualifiedStaticIntegerFieldAccessorImpl(field, isReadOnly);

    76                 } else if (type == Long.TYPE) {

    77                     return new UnsafeQualifiedStaticLongFieldAccessorImpl(field, isReadOnly);

    78                 } else if (type == Float.TYPE) {

    79                     return new UnsafeQualifiedStaticFloatFieldAccessorImpl(field, isReadOnly);

    80                 } else if (type == Double.TYPE) {

    81                     return new UnsafeQualifiedStaticDoubleFieldAccessorImpl(field, isReadOnly);

    82                 } else {

    83                     return new UnsafeQualifiedStaticObjectFieldAccessorImpl(field, isReadOnly);

    84                 }

    85             }

    86         } else {

    87             if (!isQualified) {

    88                 if (type == Boolean.TYPE) {

    89                     return new UnsafeBooleanFieldAccessorImpl(field);

    90                 } else if (type == Byte.TYPE) {

    91                     return new UnsafeByteFieldAccessorImpl(field);

    92                 } else if (type == Short.TYPE) {

    93                     return new UnsafeShortFieldAccessorImpl(field);

    94                 } else if (type == Character.TYPE) {

    95                     return new UnsafeCharacterFieldAccessorImpl(field);

    96                 } else if (type == Integer.TYPE) {

    97                     return new UnsafeIntegerFieldAccessorImpl(field);

    98                 } else if (type == Long.TYPE) {

    99                     return new UnsafeLongFieldAccessorImpl(field);

   100                 } else if (type == Float.TYPE) {

   101                     return new UnsafeFloatFieldAccessorImpl(field);

   102                 } else if (type == Double.TYPE) {

   103                     return new UnsafeDoubleFieldAccessorImpl(field);

   104                 } else {

   105                     return new UnsafeObjectFieldAccessorImpl(field);

   106                 }

   107             } else {

   108                 if (type == Boolean.TYPE) {

   109                     return new UnsafeQualifiedBooleanFieldAccessorImpl(field, isReadOnly);

   110                 } else if (type == Byte.TYPE) {

   111                     return new UnsafeQualifiedByteFieldAccessorImpl(field, isReadOnly);

   112                 } else if (type == Short.TYPE) {

   113                     return new UnsafeQualifiedShortFieldAccessorImpl(field, isReadOnly);

   114                 } else if (type == Character.TYPE) {

   115                     return new UnsafeQualifiedCharacterFieldAccessorImpl(field, isReadOnly);

   116                 } else if (type == Integer.TYPE) {

   117                     return new UnsafeQualifiedIntegerFieldAccessorImpl(field, isReadOnly);

   118                 } else if (type == Long.TYPE) {

   119                     return new UnsafeQualifiedLongFieldAccessorImpl(field, isReadOnly);

   120                 } else if (type == Float.TYPE) {

   121                     return new UnsafeQualifiedFloatFieldAccessorImpl(field, isReadOnly);

   122                 } else if (type == Double.TYPE) {

   123                     return new UnsafeQualifiedDoubleFieldAccessorImpl(field, isReadOnly);

   124                 } else {

   125                     return new UnsafeQualifiedObjectFieldAccessorImpl(field, isReadOnly);

   126                 }

   127             }

   128         }

   129     }

   130 }