1 /*
   2  * Copyright (c) 2010, 2013, 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  */
  25 
  26 package jdk.nashorn.internal.objects.annotations;
  27 
  28 /**
  29  * Attributes for JavaScript properties. The negative logic "NOT_xxx" is because the
  30  * common case is to be writable, enumerable and configurable
  31  */
  32 
  33 public interface Attribute {
  34     /** Flag for non-writable properties */
  35     public static final int NOT_WRITABLE     = jdk.nashorn.internal.runtime.Property.NOT_WRITABLE;
  36 
  37     /** Flag for non-enumerable properties */
  38     public static final int NOT_ENUMERABLE   = jdk.nashorn.internal.runtime.Property.NOT_ENUMERABLE;
  39 
  40     /** Flag for non-configurable properties */
  41     public static final int NOT_CONFIGURABLE = jdk.nashorn.internal.runtime.Property.NOT_CONFIGURABLE;
  42 
  43     /**
  44      * Flag for accessor (getter/setter) properties as opposed to data properties.
  45      *
  46      * <p>This allows nasgen-created properties to behave like user-accessors. it should only be used for
  47      * properties that are explicitly specified as accessor properties in the ECMAScript specification
  48      * such as Map.prototype.size in ES6, not value properties that happen to be implemented by getter/setter
  49      * such as the "length" properties of String or Array objects.</p>
  50      */
  51     public static final int IS_ACCESSOR = jdk.nashorn.internal.runtime.Property.IS_ACCESSOR_PROPERTY;
  52 
  53     /** Read-only, non-configurable property */
  54     public static final int CONSTANT = NOT_WRITABLE | NOT_CONFIGURABLE;
  55 
  56     /** Non-enumerable, read-only, non-configurable property */
  57     public static final int NON_ENUMERABLE_CONSTANT = NOT_ENUMERABLE | CONSTANT;
  58 
  59     /** By default properties are writable, enumerable and configurable */
  60     public static final int DEFAULT_ATTRIBUTES = 0;
  61 }