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1 /*
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2 * Copyright 1999-2005 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 // ciInstance
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26 //
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27 // This class represents an instanceOop in the HotSpot virtual
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28 // machine. This is an oop which corresponds to a non-array
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29 // instance of java.lang.Object.
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30 class ciInstance : public ciObject {
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31 CI_PACKAGE_ACCESS
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32
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33 protected:
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34 ciInstance(instanceHandle h_i) : ciObject(h_i) {
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35 assert(h_i()->is_instance(), "wrong type");
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36 }
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37
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38 ciInstance(ciKlass* klass) : ciObject(klass) {}
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39
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40 instanceOop get_instanceOop() { return (instanceOop)get_oop(); }
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41
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42 const char* type_string() { return "ciInstance"; }
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43
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44 void print_impl(outputStream* st);
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45
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46 public:
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47 // If this object is a java mirror, return the corresponding type.
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48 // Otherwise, return NULL.
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49 // (Remember that a java mirror is an instance of java.lang.Class.)
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50 ciType* java_mirror_type();
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51
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52 // What kind of ciObject is this?
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53 bool is_instance() { return true; }
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54 bool is_java_object() { return true; }
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55
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56 // Constant value of a field.
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57 ciConstant field_value(ciField* field);
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58
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59 // Constant value of a field at the specified offset.
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60 ciConstant field_value_by_offset(int field_offset);
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61 };
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