jdk8-mips64-public/nashorn: src/jdk/nashorn/internal/objects/NativeJavaImporter.java@b0dcc3727fc3 (annotated)

src/jdk/nashorn/internal/objects/NativeJavaImporter.java@b0dcc3727fc3 (annotated)

src/jdk/nashorn/internal/objects/NativeJavaImporter.java

Thu, 13 Jun 2013 16:08:35 +0530

author: sundar
date: Thu, 13 Jun 2013 16:08:35 +0530
changeset 344: b0dcc3727fc3
parent 90: 5a820fb11814
child 380: 80c66d3fd872
permissions: -rw-r--r--

8015355: Array.prototype functions don't honour non-writable length and / or index properties
Reviewed-by: lagergren, hannesw

 /*
  * 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 jdk.internal.dynalink.CallSiteDescriptor;
 import jdk.internal.dynalink.beans.StaticClass;
 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.NativeJavaPackage;
 import jdk.nashorn.internal.runtime.ScriptObject;
 /**
  * This is "JavaImporter" constructor. This constructor allows you to use Java types omitting explicit package names.
  * Objects of this constructor are used along with {@code "with"} statements and as such are not usable in ECMAScript
  * strict mode. Example:
  * <pre>
  *     var imports = new JavaImporter(java.util, java.io);
  *     with (imports) {
  *         var m = new HashMap(); // java.util.HashMap
  *         var f = new File("."); // java.io.File
  *         ...
  *     }
  * </pre>
  * Note however that the preferred way for accessing Java types in Nashorn is through the use of
  * {@link NativeJava#type(Object, Object) Java.type()} method.
  */
 @ScriptClass("JavaImporter")
 public final class NativeJavaImporter extends ScriptObject {
     private final Object[] args;
     NativeJavaImporter(final Object[] args) {
         this.args = args;
         this.setProto(Global.instance().getJavaImporterPrototype());
     }
     @Override
     public String getClassName() {
         return "JavaImporter";
     }
     /**
      * Constructor
      * @param isNew is the new operator used for instantiating this NativeJavaImporter
      * @param self self reference
      * @param args arguments
      * @return NativeJavaImporter instance
      */
     @Constructor(arity = 1)
     public static Object constructor(final boolean isNew, final Object self, final Object... args) {
         return new NativeJavaImporter(args);
     }
     /**
      * "No such property" call placeholder.
      *
      * This can never be called as we override {@link ScriptObject#noSuchProperty}. We do declare it here as it's a signal
      * to {@link jdk.nashorn.internal.runtime.WithObject} that it's worth trying doing a {@code noSuchProperty} on this object.
      *
      * @param self self reference
      * @param name property name
      * @return never returns
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object __noSuchProperty__(final Object self, final Object name) {
         throw new AssertionError("__noSuchProperty__ placeholder called");
     }
     /**
      * "No such method call" placeholder
      *
      * This can never be called as we override {@link ScriptObject#noSuchMethod}. We do declare it here as it's a signal
      * to {@link jdk.nashorn.internal.runtime.WithObject} that it's worth trying doing a noSuchProperty on this object.
      *
      * @param self self reference
      * @param args arguments to method
      * @return never returns
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object __noSuchMethod__(final Object self, final Object... args) {
         throw new AssertionError("__noSuchMethod__ placeholder called");
     }
     @Override
     public GuardedInvocation noSuchProperty(final CallSiteDescriptor desc, final LinkRequest request) {
         return createAndSetProperty(desc) ? super.lookup(desc, request) : super.noSuchProperty(desc, request);
     }
     @Override
     public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
         return createAndSetProperty(desc) ? super.lookup(desc, request) : super.noSuchMethod(desc, request);
     }
     private boolean createAndSetProperty(final CallSiteDescriptor desc) {
         final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
         final Object value = createProperty(name);
         if(value != null) {
             set(name, value, false);
             return true;
         }
         return false;
     }
     private Object createProperty(final String name) {
         final int len = args.length;
         for (int i = len - 1; i > -1; i--) {
             final Object obj = args[i];
             if (obj instanceof StaticClass) {
                 if (((StaticClass)obj).getRepresentedClass().getSimpleName().equals(name)) {
                     return obj;
                 }
             } else if (obj instanceof NativeJavaPackage) {
                 final String pkgName  = ((NativeJavaPackage)obj).getName();
                 final String fullName = pkgName.isEmpty() ? name : (pkgName + "." + name);
                 try {
                     return StaticClass.forClass(Class.forName(fullName));
                 } catch (final ClassNotFoundException e) {
                     // IGNORE
                 }
             }
         }
         return null;
     }
 }

Mercurial > jdk8-mips64-public > nashorn / annotate

src/jdk/nashorn/internal/objects/NativeJavaImporter.java@b0dcc3727fc3 (annotated)

src/jdk/nashorn/internal/objects/NativeJavaImporter.java