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/*
* 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.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;
GenericPropertyDescriptor() {
this(false, false);
}
GenericPropertyDescriptor(final boolean configurable, final boolean enumerable) {
this.configurable = configurable;
this.enumerable = enumerable;
setProto(Global.objectPrototype());
}
@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) {
final boolean strict = isStrictContext();
if (sobj.has(CONFIGURABLE)) {
this.configurable = JSType.toBoolean(sobj.get(CONFIGURABLE));
} else {
delete(CONFIGURABLE, strict);
}
if (sobj.has(ENUMERABLE)) {
this.enumerable = JSType.toBoolean(sobj.get(ENUMERABLE));
} else {
delete(ENUMERABLE, strict);
}
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;
}
}
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