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1 /*
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2 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.debugger.cdbg;
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26
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27 import sun.jvm.hotspot.debugger.*;
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28
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29 /** Provides uniform visitation to primitive and compound objects.
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30 Typically one will have an Address of an "object" (in the
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31 idealistic C++ definition, including "primitive objects" like
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32 ints) and a Type for that object. This visitor interface allows
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33 one to either get the value of the object (if of primitive type)
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34 or iterate through its fields, getting the value of each, in a
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35 consistent fashion. Also supports iteration through arrays of
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36 known length. */
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37
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38 public interface ObjectVisitor {
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39 /** This is called before beginning iterating through either the
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40 fields declared in this compound type (not its superclasses) or
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41 the elements of this array */
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42 public void enterType(Type type, Address objectAddress);
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43
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44 /** This is called after finishing iterating through this compound
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45 type */
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46 public void exitType();
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47
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48 /** Primitive field or object of integer bitfield
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49 type. FieldIdentifier is null if not a field of an enclosing
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50 object. */
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51 public void doBit(FieldIdentifier f, long val);
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52
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53 /** Primitive field or object of integer type. FieldIdentifier is
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54 null if not a field of an enclosing object. */
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55 public void doInt(FieldIdentifier f, long val);
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56
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57 /** Primitive field or object of enumerated type type.
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58 FieldIdentifier is null if not a field of an enclosing
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59 object. */
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60 public void doEnum(FieldIdentifier f, long val, String enumName);
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61
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62 /** Primitive field or object of single-precision floating-point
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63 type. FieldIdentifier is null if not a field of an enclosing
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64 object. */
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65 public void doFloat(FieldIdentifier f, float val);
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66
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67 /** Primitive field or object of double-precision floating-point
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68 type. FieldIdentifier is null if not a field of an enclosing
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69 object. */
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70 public void doDouble(FieldIdentifier f, double val);
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71
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72 /** Primitive field or object of pointer type. FieldIdentifier is
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73 null if not a field of an enclosing object. */
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74 public void doPointer(FieldIdentifier f, Address val);
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75
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76 /** Primitive field or object of array type. FieldIdentifier is null
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77 if not a field of an enclosing object. */
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78 public void doArray(FieldIdentifier f, Address val);
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79
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80 /** Primitive field or object of (C++) reference
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81 type. FieldIdentifier is null if not a field of an enclosing
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82 object. */
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83 public void doRef(FieldIdentifier f, Address val);
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84
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85 /** Identifies embedded objects in compound objects. FieldIdentifier
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86 is null if not a field of an enclosing object. */
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87 public void doCompound(FieldIdentifier f, Address addressOfEmbeddedCompoundObject);
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88 }
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