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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 static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
import static jdk.nashorn.internal.runtime.ScriptRuntime.sameValue;
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;
/**
* Accessor Property descriptor is used to represent attributes an object property
* that either has a getter or a setter.
*
* See ECMA 8.10 The Property Descriptor and Property Identifier Specification Types
*
*/
@ScriptClass("AccessorPropertyDescriptor")
public final class AccessorPropertyDescriptor extends ScriptObject implements PropertyDescriptor {
/** is this property configurable? */
@Property
public Object configurable;
/** is this property enumerable? */
@Property
public Object enumerable;
/** getter for property */
@Property
public Object get;
/** setter for property */
@Property
public Object set;
// initialized by nasgen
private static PropertyMap $nasgenmap$;
AccessorPropertyDescriptor(final boolean configurable, final boolean enumerable, final Object get, final Object set, final Global global) {
super(global.getObjectPrototype(), $nasgenmap$);
this.configurable = configurable;
this.enumerable = enumerable;
this.get = get;
this.set = set;
}
@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 true;
}
@Override
public Object getValue() {
throw new UnsupportedOperationException("value");
}
@Override
public ScriptFunction getGetter() {
return (get instanceof ScriptFunction) ? (ScriptFunction)get : null;
}
@Override
public ScriptFunction getSetter() {
return (set instanceof ScriptFunction) ? (ScriptFunction)set : null;
}
@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) {
this.get = getter;
}
@Override
public void setSetter(final Object setter) {
this.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);
}
if (sobj.has(GET)) {
final Object getter = sobj.get(GET);
if (getter == UNDEFINED || getter instanceof ScriptFunction) {
this.get = getter;
} else {
throw typeError("not.a.function", ScriptRuntime.safeToString(getter));
}
} else {
delete(GET, false);
}
if (sobj.has(SET)) {
final Object setter = sobj.get(SET);
if (setter == UNDEFINED || setter instanceof ScriptFunction) {
this.set = setter;
} else {
throw typeError("not.a.function", ScriptRuntime.safeToString(setter));
}
} else {
delete(SET, false);
}
return this;
}
@Override
public int type() {
return ACCESSOR;
}
@Override
public boolean hasAndEquals(final PropertyDescriptor otherDesc) {
if (! (otherDesc instanceof AccessorPropertyDescriptor)) {
return false;
}
final AccessorPropertyDescriptor other = (AccessorPropertyDescriptor)otherDesc;
return (!has(CONFIGURABLE) || sameValue(configurable, other.configurable)) &&
(!has(ENUMERABLE) || sameValue(enumerable, other.enumerable)) &&
(!has(GET) || sameValue(get, other.get)) &&
(!has(SET) || sameValue(set, other.set));
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (! (obj instanceof AccessorPropertyDescriptor)) {
return false;
}
final AccessorPropertyDescriptor other = (AccessorPropertyDescriptor)obj;
return sameValue(configurable, other.configurable) &&
sameValue(enumerable, other.enumerable) &&
sameValue(get, other.get) &&
sameValue(set, other.set);
}
@Override
public int hashCode() {
int hash = 7;
hash = 41 * hash + Objects.hashCode(this.configurable);
hash = 41 * hash + Objects.hashCode(this.enumerable);
hash = 41 * hash + Objects.hashCode(this.get);
hash = 41 * hash + Objects.hashCode(this.set);
return hash;
}
}
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