1 /*

     2  * Copyright (c) 2002, 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.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

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

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

    21  * questions.

    22  *

    23  */

    24 

    25 package sun.jvm.hotspot.jdi;

    26 

    27 import com.sun.jdi.*;

    28 import sun.jvm.hotspot.oops.Oop;

    29 import sun.jvm.hotspot.oops.Instance;

    30 import sun.jvm.hotspot.oops.Array;

    31 import sun.jvm.hotspot.oops.InstanceKlass;

    32 import sun.jvm.hotspot.oops.Symbol;

    33 import sun.jvm.hotspot.oops.FieldIdentifier;

    34 

    35 import java.util.List;

    36 import java.util.Iterator;

    37 import java.util.ArrayList;

    38 import java.util.Comparator;

    39 

    40 public class FieldImpl extends TypeComponentImpl implements Field {

    41     private JNITypeParser signatureParser;

    42     private sun.jvm.hotspot.oops.Field saField;

    43 

    44     FieldImpl( VirtualMachine vm, ReferenceTypeImpl declaringType,

    45                sun.jvm.hotspot.oops.Field saField) {

    46         super(vm, declaringType);

    47         this.saField = saField;

    48         getParser();

    49     }

    50 

    51     private void getParser() {

    52         if (signatureParser == null) {

    53             Symbol sig1 = saField.getSignature();

    54             signature = sig1.asString();

    55             signatureParser = new JNITypeParser(signature);

    56         }

    57     }

    58 

    59     sun.jvm.hotspot.oops.Field ref() {

    60         return saField;

    61     }

    62 

    63     // get the value of static field

    64     ValueImpl getValue() {

    65         return getValue(saField.getFieldHolder().getJavaMirror());

    66     }

    67 

    68     // get the value of this Field from a specific Oop

    69     ValueImpl getValue(Oop target) {

    70         ValueImpl valueImpl;

    71         sun.jvm.hotspot.oops.Field saField = (sun.jvm.hotspot.oops.Field) ref();

    72         sun.jvm.hotspot.oops.FieldType ft = saField.getFieldType();

    73         if (ft.isArray()) {

    74             sun.jvm.hotspot.oops.OopField of = (sun.jvm.hotspot.oops.OopField)saField;

    75             valueImpl = (ArrayReferenceImpl) vm.arrayMirror((Array)of.getValue(target));

    76         } else if (ft.isObject()) {

    77             sun.jvm.hotspot.oops.OopField of = (sun.jvm.hotspot.oops.OopField)saField;

    78             valueImpl = (ObjectReferenceImpl) vm.objectMirror(of.getValue(target));

    79         } else if (ft.isByte()) {

    80             sun.jvm.hotspot.oops.ByteField bf = (sun.jvm.hotspot.oops.ByteField)saField;

    81             valueImpl = (ByteValueImpl) vm.mirrorOf(bf.getValue(target));

    82         } else if (ft.isChar()) {

    83             sun.jvm.hotspot.oops.CharField cf = (sun.jvm.hotspot.oops.CharField)saField;

    84             valueImpl = (CharValueImpl) vm.mirrorOf(cf.getValue(target));

    85         } else if (ft.isDouble()) {

    86             sun.jvm.hotspot.oops.DoubleField df = (sun.jvm.hotspot.oops.DoubleField)saField;

    87             valueImpl = (DoubleValueImpl) vm.mirrorOf(df.getValue(target));

    88         } else if (ft.isFloat()) {

    89             sun.jvm.hotspot.oops.FloatField ff = (sun.jvm.hotspot.oops.FloatField)saField;

    90             valueImpl = (FloatValueImpl) vm.mirrorOf(ff.getValue(target));

    91         } else if (ft.isInt()) {

    92             sun.jvm.hotspot.oops.IntField iif = (sun.jvm.hotspot.oops.IntField)saField;

    93             valueImpl = (IntegerValueImpl) vm.mirrorOf(iif.getValue(target));

    94         } else if (ft.isLong()) {

    95             sun.jvm.hotspot.oops.LongField lf = (sun.jvm.hotspot.oops.LongField)saField;

    96             valueImpl = (LongValueImpl) vm.mirrorOf(lf.getValue(target));

    97         } else if (ft.isShort()) {

    98             sun.jvm.hotspot.oops.ShortField sf = (sun.jvm.hotspot.oops.ShortField)saField;

    99             valueImpl = (ShortValueImpl) vm.mirrorOf(sf.getValue(target));

   100         } else if (ft.isBoolean()) {

   101             sun.jvm.hotspot.oops.BooleanField bf = (sun.jvm.hotspot.oops.BooleanField)saField;

   102             valueImpl = (BooleanValueImpl) vm.mirrorOf(bf.getValue(target));

   103         } else {

   104             throw new RuntimeException("Should not reach here");

   105         }

   106         return valueImpl;

   107     }

   108 

   109     public boolean equals(Object obj) {

   110         if ((obj != null) && (obj instanceof FieldImpl)) {

   111             FieldImpl other = (FieldImpl)obj;

   112             return (declaringType().equals(other.declaringType())) &&

   113                 (ref().equals(other.ref())) &&

   114                 super.equals(obj);

   115         } else {

   116             return false;

   117         }

   118     }

   119 

   120     public boolean isTransient() {

   121         return saField.isTransient();

   122     }

   123 

   124     public boolean isVolatile() {

   125         return saField.isVolatile();

   126     }

   127 

   128     public boolean isEnumConstant() {

   129         return saField.isEnumConstant();

   130     }

   131 

   132     public Type type() throws ClassNotLoadedException {

   133         // So, we do it just like JDI does by searching the enclosing type.

   134         return findType(signature());

   135     }

   136 

   137     public String typeName() { //fixme jjh: jpda version creates redundant JNITypeParsers

   138         getParser();

   139         return signatureParser.typeName();

   140     }

   141 

   142     public String genericSignature() {

   143         Symbol genSig = saField.getGenericSignature();

   144         return (genSig != null)? genSig.asString() : null;

   145     }

   146 

   147     // From interface Comparable

   148     public int compareTo(Field field) {

   149         ReferenceTypeImpl declaringType = (ReferenceTypeImpl)declaringType();

   150         int rc = declaringType.compareTo(field.declaringType());

   151         if (rc == 0) {

   152             rc = declaringType.indexOf(this) -

   153                 declaringType.indexOf(field);

   154         }

   155         return rc;

   156     }

   157 

   158     // from interface Mirror

   159     public String toString() {

   160         StringBuffer buf = new StringBuffer();

   161 

   162         buf.append(declaringType().name());

   163         buf.append('.');

   164         buf.append(name());

   165         return buf.toString();

   166     }

   167 

   168     public String name() {

   169         FieldIdentifier myName =  saField.getID();

   170         return myName.getName();

   171     }

   172 

   173     // From interface Accessible

   174     public int modifiers() {

   175         return saField.getAccessFlagsObj().getStandardFlags();

   176     }

   177 

   178     public boolean isPackagePrivate() {

   179         return saField.isPackagePrivate();

   180     }

   181 

   182     public boolean isPrivate() {

   183         return saField.isPrivate();

   184     }

   185 

   186     public boolean isProtected() {

   187         return saField.isProtected();

   188     }

   189 

   190     public boolean isPublic() {

   191         return saField.isPublic();

   192     }

   193 

   194     public boolean isStatic() {

   195         return saField.isStatic();

   196     }

   197 

   198     public boolean isFinal() {

   199         return saField.isFinal();

   200     }

   201 

   202     public boolean isSynthetic() {

   203         return saField.isSynthetic();

   204     }

   205 

   206     public int hashCode() {

   207         return saField.hashCode();

   208     }

   209 

   210 

   211     private Type findType(String signature) throws ClassNotLoadedException {

   212         ReferenceTypeImpl enclosing = (ReferenceTypeImpl)declaringType();

   213         return enclosing.findType(signature);

   214     }

   215 

   216 }