duke@1: /*
jjg@1374:  * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
duke@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1:  *
duke@1:  * This code is free software; you can redistribute it and/or modify it
duke@1:  * under the terms of the GNU General Public License version 2 only, as
ohair@554:  * published by the Free Software Foundation.  Oracle designates this
duke@1:  * particular file as subject to the "Classpath" exception as provided
ohair@554:  * by Oracle in the LICENSE file that accompanied this code.
duke@1:  *
duke@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@1:  * version 2 for more details (a copy is included in the LICENSE file that
duke@1:  * accompanied this code).
duke@1:  *
duke@1:  * You should have received a copy of the GNU General Public License version
duke@1:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1:  *
ohair@554:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554:  * or visit www.oracle.com if you need additional information or have any
ohair@554:  * questions.
duke@1:  */
duke@1: 
duke@1: package com.sun.tools.javac.jvm;
duke@1: 
duke@1: import com.sun.tools.javac.code.*;
duke@1: 
jjg@1374: import static com.sun.tools.javac.code.TypeTag.UNINITIALIZED_OBJECT;
jjg@1374: import static com.sun.tools.javac.code.TypeTag.UNINITIALIZED_THIS;
duke@1: 
duke@1: /** These pseudo-types appear in the generated verifier tables to
duke@1:  *  indicate objects that have been allocated but not yet constructed.
duke@1:  *
jjg@581:  *  <p><b>This is NOT part of any supported API.
jjg@581:  *  If you write code that depends on this, you do so at your own risk.
duke@1:  *  This code and its internal interfaces are subject to change or
duke@1:  *  deletion without notice.</b>
duke@1:  */
duke@1: class UninitializedType extends Type.DelegatedType {
duke@1: 
duke@1:     public static UninitializedType uninitializedThis(Type qtype) {
duke@1:         return new UninitializedType(UNINITIALIZED_THIS, qtype, -1);
duke@1:     }
duke@1: 
duke@1:     public static UninitializedType uninitializedObject(Type qtype, int offset) {
duke@1:         return new UninitializedType(UNINITIALIZED_OBJECT, qtype, offset);
duke@1:     }
duke@1: 
duke@1:     public final int offset; // PC where allocation took place
jjg@1374:     private UninitializedType(TypeTag tag, Type qtype, int offset) {
duke@1:         super(tag, qtype);
duke@1:         this.offset = offset;
duke@1:     }
duke@1: 
duke@1:     Type initializedType() {
duke@1:         return qtype;
duke@1:     }
duke@1: }