jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/jvm/UninitializedType.java@af8417e590f4

     1 /*

     2  * Copyright (c) 2003, 2012, 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

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

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

    23  * questions.

    24  */

    26 package com.sun.tools.javac.jvm;

    28 import com.sun.tools.javac.code.*;

    30 import static com.sun.tools.javac.code.TypeTag.UNINITIALIZED_OBJECT;

    31 import static com.sun.tools.javac.code.TypeTag.UNINITIALIZED_THIS;

    33 /** These pseudo-types appear in the generated verifier tables to

    34  *  indicate objects that have been allocated but not yet constructed.

    35  *

    36  *  <p><b>This is NOT part of any supported API.

    37  *  If you write code that depends on this, you do so at your own risk.

    38  *  This code and its internal interfaces are subject to change or

    39  *  deletion without notice.</b>

    40  */

    41 class UninitializedType extends Type.DelegatedType {

    43     public static UninitializedType uninitializedThis(Type qtype) {

    44         return new UninitializedType(UNINITIALIZED_THIS, qtype, -1);

    45     }

    47     public static UninitializedType uninitializedObject(Type qtype, int offset) {

    48         return new UninitializedType(UNINITIALIZED_OBJECT, qtype, offset);

    49     }

    51     public final int offset; // PC where allocation took place

    52     private UninitializedType(TypeTag tag, Type qtype, int offset) {

    53         super(tag, qtype);

    54         this.offset = offset;

    55     }

    57     Type initializedType() {

    58         return qtype;

    59     }

    60 }

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