Sat, 01 Dec 2007 00:00:00 +0000
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duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1999-2000 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // ciNullObject |
duke@435 | 26 | // |
duke@435 | 27 | // This class represents a null reference in the VM. |
duke@435 | 28 | class ciNullObject : public ciObject { |
duke@435 | 29 | CI_PACKAGE_ACCESS |
duke@435 | 30 | |
duke@435 | 31 | private: |
duke@435 | 32 | ciNullObject() : ciObject() {} |
duke@435 | 33 | |
duke@435 | 34 | const char* type_string() { return "ciNullObject"; } |
duke@435 | 35 | |
duke@435 | 36 | void print_impl(outputStream* st); |
duke@435 | 37 | |
duke@435 | 38 | public: |
duke@435 | 39 | // Is this ciObject a Java Language Object? That is, |
duke@435 | 40 | // is the ciObject an instance or an array |
duke@435 | 41 | bool is_java_object() { return true; } |
duke@435 | 42 | |
duke@435 | 43 | // What kind of ciObject is this? |
duke@435 | 44 | bool is_null_object() const { return true; } |
duke@435 | 45 | bool is_classless() const { return true; } |
duke@435 | 46 | |
duke@435 | 47 | // Get the distinguished instance of this klass. |
duke@435 | 48 | static ciNullObject* make(); |
duke@435 | 49 | }; |