Mercurial > jdk8-mips64-public > nashorn / file revision

 /*

  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

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

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

  *

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

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

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

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

  * accompanied this code).

  *

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

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

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

  *

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

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

  * questions.

  */

 package jdk.nashorn.internal.objects;

 import java.util.Objects;

 import jdk.nashorn.internal.objects.annotations.Property;

 import jdk.nashorn.internal.objects.annotations.ScriptClass;

 import jdk.nashorn.internal.runtime.JSType;

 import jdk.nashorn.internal.runtime.PropertyDescriptor;

 import jdk.nashorn.internal.runtime.PropertyMap;

 import jdk.nashorn.internal.runtime.ScriptFunction;

 import jdk.nashorn.internal.runtime.ScriptObject;

 import jdk.nashorn.internal.runtime.ScriptRuntime;

 /**

  * Generic Property descriptor is used to represent attributes an object property

  * that is neither a data property descriptor nor an accessor property descriptor.

  *

  * See ECMA 8.10 The Property Descriptor and Property Identifier Specification Types

  *

  */

 @ScriptClass("GenericPropertyDescriptor")

 public final class GenericPropertyDescriptor extends ScriptObject implements PropertyDescriptor {

     /** Is the property configurable? */

     @Property

     public Object configurable;

     /** Is the property writable? */

     @Property

     public Object enumerable;

     // initialized by nasgen

     private static PropertyMap $nasgenmap$;

     GenericPropertyDescriptor() {

         this(false, false);

     }

     GenericPropertyDescriptor(final boolean configurable, final boolean enumerable) {

         super(Global.objectPrototype(), $nasgenmap$);

         this.configurable = configurable;

         this.enumerable   = enumerable;

     }

     @Override

     public boolean isConfigurable() {

         return JSType.toBoolean(configurable);

     }

     @Override

     public boolean isEnumerable() {

         return JSType.toBoolean(enumerable);

     }

     @Override

     public boolean isWritable() {

         // Not applicable for this. But simplifies flag calculations.

         return false;

     }

     @Override

     public Object getValue() {

         throw new UnsupportedOperationException("value");

     }

     @Override

     public ScriptFunction getGetter() {

         throw new UnsupportedOperationException("get");

     }

     @Override

     public ScriptFunction getSetter() {

         throw new UnsupportedOperationException("set");

     }

     @Override

     public void setConfigurable(final boolean flag) {

         this.configurable = flag;

     }

     @Override

     public void setEnumerable(final boolean flag) {

         this.enumerable = flag;

     }

     @Override

     public void setWritable(final boolean flag) {

         throw new UnsupportedOperationException("set writable");

     }

     @Override

     public void setValue(final Object value) {

         throw new UnsupportedOperationException("set value");

     }

     @Override

     public void setGetter(final Object getter) {

         throw new UnsupportedOperationException("set getter");

     }

     @Override

     public void setSetter(final Object setter) {

         throw new UnsupportedOperationException("set setter");

     }

     @Override

     public PropertyDescriptor fillFrom(final ScriptObject sobj) {

         if (sobj.has(CONFIGURABLE)) {

             this.configurable = JSType.toBoolean(sobj.get(CONFIGURABLE));

         } else {

             delete(CONFIGURABLE, false);

         }

         if (sobj.has(ENUMERABLE)) {

             this.enumerable = JSType.toBoolean(sobj.get(ENUMERABLE));

         } else {

             delete(ENUMERABLE, false);

         }

         return this;

     }

     @Override

     public int type() {

         return GENERIC;

     }

     @Override

     public boolean equals(final Object obj) {

         if (this == obj) {

             return true;

         }

         if (!(obj instanceof GenericPropertyDescriptor)) {

             return false;

         }

         final GenericPropertyDescriptor other = (GenericPropertyDescriptor)obj;

         return ScriptRuntime.sameValue(configurable, other.configurable) &&

                ScriptRuntime.sameValue(enumerable, other.enumerable);

     }

     @Override

     public int hashCode() {

         int hash = 7;

         hash = 97 * hash + Objects.hashCode(this.configurable);

         hash = 97 * hash + Objects.hashCode(this.enumerable);

         return hash;

     }

 }