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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package jdk.nashorn.internal.objects;

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;

Data Property descriptor is used to represent attributes an object property that has data value (instead of a getter or setter function). See ECMA 8.10 The Property Descriptor and Property Identifier Specification Types
/** * Data Property descriptor is used to represent attributes an object property * that has data value (instead of a getter or setter function). * * See ECMA 8.10 The Property Descriptor and Property Identifier Specification Types * */
@ScriptClass("DataPropertyDescriptor") public final class DataPropertyDescriptor extends ScriptObject implements PropertyDescriptor {
is this property configurable
/** is this property configurable */
@Property public Object configurable;
is this property enumerable
/** is this property enumerable */
@Property public Object enumerable;
is this property writable
/** is this property writable */
@Property public Object writable;
value of this property
/** value of this property */
@Property public Object value; // initialized by nasgen private static PropertyMap $nasgenmap$; DataPropertyDescriptor(final boolean configurable, final boolean enumerable, final boolean writable, final Object value, final Global global) { super(global.getObjectPrototype(), $nasgenmap$); this.configurable = configurable; this.enumerable = enumerable; this.writable = writable; this.value = value; } @Override public boolean isConfigurable() { return JSType.toBoolean(configurable); } @Override public boolean isEnumerable() { return JSType.toBoolean(enumerable); } @Override public boolean isWritable() { return JSType.toBoolean(writable); } @Override public Object getValue() { return value; } @Override public ScriptFunction getGetter() { throw new UnsupportedOperationException("getter"); } @Override public ScriptFunction getSetter() { throw new UnsupportedOperationException("setter"); } @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) { this.writable = flag; } @Override public void setValue(final Object value) { this.value = 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); } if (sobj.has(WRITABLE)) { this.writable = JSType.toBoolean(sobj.get(WRITABLE)); } else { delete(WRITABLE, false); } if (sobj.has(VALUE)) { this.value = sobj.get(VALUE); } else { delete(VALUE, false); } return this; } @Override public int type() { return DATA; } @Override public boolean hasAndEquals(final PropertyDescriptor otherDesc) { if (! (otherDesc instanceof DataPropertyDescriptor)) { return false; } final DataPropertyDescriptor other = (DataPropertyDescriptor)otherDesc; return (!has(CONFIGURABLE) || sameValue(configurable, other.configurable)) && (!has(ENUMERABLE) || sameValue(enumerable, other.enumerable)) && (!has(WRITABLE) || sameValue(writable, other.writable)) && (!has(VALUE) || sameValue(value, other.value)); } @Override public boolean equals(final Object obj) { if (this == obj) { return true; } if (! (obj instanceof DataPropertyDescriptor)) { return false; } final DataPropertyDescriptor other = (DataPropertyDescriptor)obj; return sameValue(configurable, other.configurable) && sameValue(enumerable, other.enumerable) && sameValue(writable, other.writable) && sameValue(value, other.value); } @Override public String toString() { return '[' + getClass().getSimpleName() + " {configurable=" + configurable + " enumerable=" + enumerable + " writable=" + writable + " value=" + value + "}]"; } @Override public int hashCode() { int hash = 5; hash = 43 * hash + Objects.hashCode(this.configurable); hash = 43 * hash + Objects.hashCode(this.enumerable); hash = 43 * hash + Objects.hashCode(this.writable); hash = 43 * hash + Objects.hashCode(this.value); return hash; } }