| /* |
| * 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.lookup.Lookup.MH; |
| import static jdk.nashorn.internal.runtime.ECMAErrors.typeError; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| import java.lang.invoke.MethodType; |
| import jdk.internal.dynalink.linker.GuardedInvocation; |
| import jdk.internal.dynalink.linker.LinkRequest; |
| import jdk.nashorn.internal.objects.annotations.Attribute; |
| import jdk.nashorn.internal.objects.annotations.Constructor; |
| import jdk.nashorn.internal.objects.annotations.Function; |
| import jdk.nashorn.internal.objects.annotations.ScriptClass; |
| import jdk.nashorn.internal.runtime.JSType; |
| import jdk.nashorn.internal.runtime.PropertyMap; |
| import jdk.nashorn.internal.runtime.ScriptObject; |
| import jdk.nashorn.internal.runtime.ScriptRuntime; |
| import jdk.nashorn.internal.runtime.linker.PrimitiveLookup; |
| |
| /** |
| * ECMA 15.6 Boolean Objects. |
| */ |
| |
| @ScriptClass("Boolean") |
| public final class NativeBoolean extends ScriptObject { |
| private final boolean value; |
| |
| /** Method handle to create an object wrapper for a primitive boolean. */ |
| static final MethodHandle WRAPFILTER = findOwnMH("wrapFilter", MH.type(NativeBoolean.class, Object.class)); |
| /** Method handle to retrieve the Boolean prototype object. */ |
| private static final MethodHandle PROTOFILTER = findOwnMH("protoFilter", MH.type(Object.class, Object.class)); |
| |
| // initialized by nasgen |
| private static PropertyMap $nasgenmap$; |
| |
| private NativeBoolean(final boolean value, final ScriptObject proto, final PropertyMap map) { |
| super(proto, map); |
| this.value = value; |
| } |
| |
| NativeBoolean(final boolean flag, final Global global) { |
| this(flag, global.getBooleanPrototype(), $nasgenmap$); |
| } |
| |
| NativeBoolean(final boolean flag) { |
| this(flag, Global.instance()); |
| } |
| |
| @Override |
| public String safeToString() { |
| return "[Boolean " + toString() + "]"; |
| } |
| |
| @Override |
| public String toString() { |
| return Boolean.toString(getValue()); |
| } |
| |
| /** |
| * Get the value for this NativeBoolean |
| * @return true or false |
| */ |
| public boolean getValue() { |
| return booleanValue(); |
| } |
| |
| /** |
| * Get the value for this NativeBoolean |
| * @return true or false |
| */ |
| public boolean booleanValue() { |
| return value; |
| } |
| |
| @Override |
| public String getClassName() { |
| return "Boolean"; |
| } |
| |
| /** |
| * ECMA 15.6.4.2 Boolean.prototype.toString ( ) |
| * |
| * @param self self reference |
| * @return string representation of this boolean |
| */ |
| @Function(attributes = Attribute.NOT_ENUMERABLE) |
| public static String toString(final Object self) { |
| return getBoolean(self).toString(); |
| } |
| |
| /** |
| * ECMA 15.6.4.3 Boolean.prototype.valueOf ( ) |
| * |
| * @param self self reference |
| * @return value of this boolean |
| */ |
| @Function(attributes = Attribute.NOT_ENUMERABLE) |
| public static boolean valueOf(final Object self) { |
| return getBoolean(self); |
| } |
| |
| /** |
| * ECMA 15.6.2.1 new Boolean (value) |
| * |
| * @param newObj is the new operator used to instantiate this NativeBoolean |
| * @param self self reference |
| * @param value value of boolean |
| * @return the new NativeBoolean |
| */ |
| @Constructor(arity = 1) |
| public static Object constructor(final boolean newObj, final Object self, final Object value) { |
| final boolean flag = JSType.toBoolean(value); |
| |
| if (newObj) { |
| return new NativeBoolean(flag); |
| } |
| |
| return flag; |
| } |
| |
| private static Boolean getBoolean(final Object self) { |
| if (self instanceof Boolean) { |
| return ((Boolean)self); |
| } else if (self instanceof NativeBoolean) { |
| return ((NativeBoolean)self).getValue(); |
| } else if (self != null && self == Global.instance().getBooleanPrototype()) { |
| return false; |
| } else { |
| throw typeError("not.a.boolean", ScriptRuntime.safeToString(self)); |
| } |
| } |
| |
| /** |
| * Lookup the appropriate method for an invoke dynamic call. |
| * |
| * @param request The link request |
| * @param receiver The receiver for the call |
| * @return Link to be invoked at call site. |
| */ |
| public static GuardedInvocation lookupPrimitive(final LinkRequest request, final Object receiver) { |
| return PrimitiveLookup.lookupPrimitive(request, Boolean.class, new NativeBoolean((Boolean)receiver), WRAPFILTER, PROTOFILTER); |
| } |
| |
| /** |
| * Wrap a native string in a NativeString object. |
| * |
| * @param receiver Native string. |
| * @return Wrapped object. |
| */ |
| @SuppressWarnings("unused") |
| private static NativeBoolean wrapFilter(final Object receiver) { |
| return new NativeBoolean((Boolean)receiver); |
| } |
| |
| @SuppressWarnings("unused") |
| private static Object protoFilter(final Object object) { |
| return Global.instance().getBooleanPrototype(); |
| } |
| |
| private static MethodHandle findOwnMH(final String name, final MethodType type) { |
| return MH.findStatic(MethodHandles.lookup(), NativeBoolean.class, name, type); |
| } |
| } |