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changeset 1782:fc972ab7d939

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8167037: Remove CALL_METHOD support from internal Nashorn linkers Reviewed-by: hannesw, sundar
author attila
date Tue, 04 Oct 2016 13:23:10 +0200
parents ab0b7e471cb6
children e3b11296395b
files src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeJSAdapter.java src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptObject.java src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Undefined.java src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/linker/NashornBottomLinker.java
diffstat 4 files changed, 0 insertions(+), 57 deletions(-) [+]
line wrap: on
line diff
--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeJSAdapter.java	Fri Sep 30 19:40:31 2016 +0200
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/NativeJSAdapter.java	Tue Oct 04 13:23:10 2016 +0200
@@ -473,22 +473,6 @@
     }
 
     @Override
-    protected GuardedInvocation findCallMethodMethod(final CallSiteDescriptor desc, final LinkRequest request) {
-        if (overrides && super.hasOwnProperty(NashornCallSiteDescriptor.getOperand(desc))) {
-            try {
-                final GuardedInvocation inv = super.findCallMethodMethod(desc, request);
-                if (inv != null) {
-                    return inv;
-                }
-            } catch (final Exception e) {
-                //ignored
-            }
-        }
-
-        return findHook(desc, __call__);
-    }
-
-    @Override
     protected GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final StandardOperation operation) {
         final String name = NashornCallSiteDescriptor.getOperand(desc);
         if (overrides && super.hasOwnProperty(name)) {
--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptObject.java	Fri Sep 30 19:40:31 2016 +0200
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/ScriptObject.java	Tue Oct 04 13:23:10 2016 +0200
@@ -80,7 +80,6 @@
 import jdk.nashorn.internal.objects.NativeArray;
 import jdk.nashorn.internal.runtime.arrays.ArrayData;
 import jdk.nashorn.internal.runtime.arrays.ArrayIndex;
-import jdk.nashorn.internal.runtime.linker.Bootstrap;
 import jdk.nashorn.internal.runtime.linker.LinkerCallSite;
 import jdk.nashorn.internal.runtime.linker.NashornCallSiteDescriptor;
 import jdk.nashorn.internal.runtime.linker.NashornGuards;
@@ -1883,8 +1882,6 @@
             return findCallMethod(desc, request);
         case NEW:
             return findNewMethod(desc, request);
-        case CALL_METHOD:
-            return findCallMethodMethod(desc, request);
         default:
         }
         return null;
@@ -1920,32 +1917,6 @@
     }
 
     /**
-     * Find an implementation for a CALL_METHOD operation. Note that Nashorn internally never uses
-     * CALL_METHOD, but instead always emits two call sites in bytecode, one for GET_METHOD, and then another
-     * one for CALL. Explicit support for CALL_METHOD is provided for the benefit of potential external
-     * callers. The implementation itself actually folds a GET_METHOD method handle into a CALL method handle.
-     *
-     * @param desc    the call site descriptor.
-     * @param request the link request
-     *
-     * @return GuardedInvocation to be invoked at call site.
-     */
-    protected GuardedInvocation findCallMethodMethod(final CallSiteDescriptor desc, final LinkRequest request) {
-        // R(P0, P1, ...)
-        final MethodType callType = desc.getMethodType();
-        // use type Object(P0) for the getter
-        final CallSiteDescriptor getterType = desc.changeMethodType(MethodType.methodType(Object.class, callType.parameterType(0)));
-        final GuardedInvocation getter = findGetMethod(getterType, request, StandardOperation.GET_METHOD);
-
-        // Object(P0) => Object(P0, P1, ...)
-        final MethodHandle argDroppingGetter = MH.dropArguments(getter.getInvocation(), 1, callType.parameterList().subList(1, callType.parameterCount()));
-        // R(Object, P0, P1, ...)
-        final MethodHandle invoker = Bootstrap.createDynamicInvoker("", NashornCallSiteDescriptor.CALL, callType.insertParameterTypes(0, argDroppingGetter.type().returnType()));
-        // Fold Object(P0, P1, ...) into R(Object, P0, P1, ...) => R(P0, P1, ...)
-        return getter.replaceMethods(MH.foldArguments(invoker, argDroppingGetter), getter.getGuard());
-    }
-
-    /**
      * Test whether this object contains in its prototype chain or is itself a with-object.
      * @return true if a with-object was found
      */
--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Undefined.java	Fri Sep 30 19:40:31 2016 +0200
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Undefined.java	Tue Oct 04 13:23:10 2016 +0200
@@ -103,8 +103,6 @@
             final String name = NashornCallSiteDescriptor.getOperand(desc);
             final String msg = name != null? "not.a.function" : "cant.call.undefined";
             throw typeError(msg, name);
-        case CALL_METHOD:
-            throw lookupTypeError("cant.read.property.of.undefined", desc);
         case GET_PROPERTY:
         case GET_ELEMENT:
         case GET_METHOD:
--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/linker/NashornBottomLinker.java	Fri Sep 30 19:40:31 2016 +0200
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/linker/NashornBottomLinker.java	Tue Oct 04 13:23:10 2016 +0200
@@ -86,13 +86,11 @@
     private static final MethodHandle EMPTY_ELEM_SETTER =
             MH.dropArguments(EMPTY_PROP_SETTER, 0, Object.class);
 
-    private static final MethodHandle THROW_NO_SUCH_FUNCTION;
     private static final MethodHandle THROW_STRICT_PROPERTY_SETTER;
     private static final MethodHandle THROW_OPTIMISTIC_UNDEFINED;
 
     static {
         final Lookup lookup = new Lookup(MethodHandles.lookup());
-        THROW_NO_SUCH_FUNCTION = lookup.findOwnStatic("throwNoSuchFunction", Object.class, Object.class, Object.class);
         THROW_STRICT_PROPERTY_SETTER = lookup.findOwnStatic("throwStrictPropertySetter", void.class, Object.class, Object.class);
         THROW_OPTIMISTIC_UNDEFINED = lookup.findOwnStatic("throwOptimisticUndefined", Object.class, int.class);
     }
@@ -130,8 +128,6 @@
         if (op != null) {
             final String operand = NashornCallSiteDescriptor.getOperand(desc);
             switch (op) {
-            case CALL_METHOD:
-                return adaptThrower(bindOperand(THROW_NO_SUCH_FUNCTION, operand), desc);
             case GET_METHOD:
             case GET_PROPERTY:
             case GET_ELEMENT: {
@@ -172,11 +168,6 @@
     }
 
     @SuppressWarnings("unused")
-    private static Object throwNoSuchFunction(final Object self, final Object name) {
-        throw createTypeError(self, name, "no.such.function");
-    }
-
-    @SuppressWarnings("unused")
     private static void throwStrictPropertySetter(final Object self, final Object name) {
         throw createTypeError(self, name, "cant.set.property");
     }
@@ -230,7 +221,6 @@
         case NEW:
         case CALL:
             throw typeError("not.a.function", "null");
-        case CALL_METHOD:
         case GET_METHOD:
             throw typeError("no.such.function", getArgument(linkRequest), "null");
         case GET_PROPERTY: