8129410: Java adapters with class-level overrides should preserve variable arity constructors

Tue, 23 Jun 2015 11:16:48 +0200

author
attila
date
Tue, 23 Jun 2015 11:16:48 +0200
changeset 1416
7095ada9fc82
parent 1415
719455f3db1c
child 1417
1ecba73dd2a1

8129410: Java adapters with class-level overrides should preserve variable arity constructors
Reviewed-by: lagergren, sundar

src/jdk/nashorn/internal/runtime/linker/JavaAdapterBytecodeGenerator.java file | annotate | diff | comparison | revisions
test/script/basic/JDK-8129410.js file | annotate | diff | comparison | revisions
     1.1 --- a/src/jdk/nashorn/internal/runtime/linker/JavaAdapterBytecodeGenerator.java	Thu Jun 18 19:20:53 2015 +0530
     1.2 +++ b/src/jdk/nashorn/internal/runtime/linker/JavaAdapterBytecodeGenerator.java	Tue Jun 23 11:16:48 2015 +0200
     1.3 @@ -106,7 +106,9 @@
     1.4   * <li>
     1.5   * If the adapter being generated can have class-level overrides, constructors taking same arguments as the superclass
     1.6   * constructors are created. These constructors simply delegate to the superclass constructor. They are simply used to
     1.7 - * create instances of the adapter class, with no instance-level overrides, as they don't have them.
     1.8 + * create instances of the adapter class, with no instance-level overrides, as they don't have them. If the original
     1.9 + * class' constructor was variable arity, the adapter constructor will also be variable arity. Protected constructors
    1.10 + * are exposed as public.
    1.11   * </li>
    1.12   * </ul>
    1.13   * </p><p>
    1.14 @@ -190,7 +192,6 @@
    1.15      private static final int MAX_GENERATED_TYPE_NAME_LENGTH = 255;
    1.16  
    1.17      private static final String CLASS_INIT = "<clinit>";
    1.18 -    static final String CONVERTER_INIT = "<converter-init>";
    1.19  
    1.20      // Method name prefix for invoking super-methods
    1.21      static final String SUPER_PREFIX = "super$";
    1.22 @@ -494,7 +495,8 @@
    1.23          final Type[] argTypes = originalCtorType.getArgumentTypes();
    1.24  
    1.25          // All constructors must be public, even if in the superclass they were protected.
    1.26 -        final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC, INIT,
    1.27 +        final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC |
    1.28 +                (ctor.isVarArgs() ? ACC_VARARGS : 0), INIT,
    1.29                  Type.getMethodDescriptor(originalCtorType.getReturnType(), argTypes), null, null));
    1.30  
    1.31          mv.visitCode();
    1.32 @@ -543,7 +545,8 @@
    1.33          System.arraycopy(originalArgTypes, 0, newArgTypes, 0, argLen);
    1.34  
    1.35          // All constructors must be public, even if in the superclass they were protected.
    1.36 -        // Existing super constructor <init>(this, args...) triggers generating <init>(this, scriptObj, args...).
    1.37 +        // Existing super constructor <init>(this, args...) triggers generating <init>(this, args..., scriptObj).
    1.38 +        // Any variable arity constructors become fixed-arity with explicit array arguments.
    1.39          final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC, INIT,
    1.40                  Type.getMethodDescriptor(originalCtorType.getReturnType(), newArgTypes), null, null));
    1.41  
    1.42 @@ -593,7 +596,7 @@
    1.43          if (! fromFunction) {
    1.44              newArgTypes[argLen] = OBJECT_TYPE;
    1.45              final InstructionAdapter mv2 = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC, INIT,
    1.46 -                Type.getMethodDescriptor(originalCtorType.getReturnType(), newArgTypes), null, null));
    1.47 +                    Type.getMethodDescriptor(originalCtorType.getReturnType(), newArgTypes), null, null));
    1.48              generateOverridingConstructorWithObjectParam(mv2, ctor, originalCtorType.getDescriptor());
    1.49          }
    1.50      }
     2.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     2.2 +++ b/test/script/basic/JDK-8129410.js	Tue Jun 23 11:16:48 2015 +0200
     2.3 @@ -0,0 +1,39 @@
     2.4 +/*
     2.5 + * Copyright (c) 2015 Oracle and/or its affiliates. All rights reserved.
     2.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     2.7 + * 
     2.8 + * This code is free software; you can redistribute it and/or modify it
     2.9 + * under the terms of the GNU General Public License version 2 only, as
    2.10 + * published by the Free Software Foundation.
    2.11 + * 
    2.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    2.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    2.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    2.15 + * version 2 for more details (a copy is included in the LICENSE file that
    2.16 + * accompanied this code).
    2.17 + * 
    2.18 + * You should have received a copy of the GNU General Public License version
    2.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    2.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    2.21 + * 
    2.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    2.23 + * or visit www.oracle.com if you need additional information or have any
    2.24 + * questions.
    2.25 + */
    2.26 +
    2.27 +/**
    2.28 + * JDK-8129410: Java adapters with class-level overrides should preserve variable arity constructors
    2.29 + *
    2.30 + * @test
    2.31 + * @run
    2.32 + */
    2.33 +
    2.34 +var VarArgConstructor = Java.type("jdk.nashorn.test.models.VarArgConstructor");
    2.35 +var VarArgConstructorExtended = Java.extend(VarArgConstructor, {});
    2.36 +
    2.37 +// If the fix didn't work we wouldn't even get past the constructor invocation
    2.38 +// as it'd complain there's no matching arity constructor.
    2.39 +var newExtended = new VarArgConstructorExtended(1, true, "a", "b");
    2.40 +
    2.41 +// Assert the expected constructor was invoked.
    2.42 +Assert.assertEquals("vararg", newExtended.indicator);

mercurial