jdk8-mips64-public/hotspot: src/share/vm/ci/ciNullObject.hpp@a61af66fc99e

     1 /*

     2  * Copyright 1999-2000 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 // ciNullObject

    26 //

    27 // This class represents a null reference in the VM.

    28 class ciNullObject : public ciObject {

    29   CI_PACKAGE_ACCESS

    31 private:

    32   ciNullObject() : ciObject() {}

    34   const char* type_string() { return "ciNullObject"; }

    36   void print_impl(outputStream* st);

    38 public:

    39   // Is this ciObject a Java Language Object?  That is,

    40   // is the ciObject an instance or an array

    41   bool is_java_object() { return true; }

    43   // What kind of ciObject is this?

    44   bool is_null_object() const { return true; }

    45   bool is_classless() const   { return true; }

    47   // Get the distinguished instance of this klass.

    48   static ciNullObject* make();

    49 };

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