jdk8-mips64-public/nashorn: src/jdk/internal/dynalink/beans/AbstractJavaLinker.java@e2497b11a021 (annotated)

src/jdk/internal/dynalink/beans/AbstractJavaLinker.java@e2497b11a021 (annotated)

src/jdk/internal/dynalink/beans/AbstractJavaLinker.java

Wed, 20 Aug 2014 10:26:01 +0200

author: attila
date: Wed, 20 Aug 2014 10:26:01 +0200
changeset 963: e2497b11a021
parent 962: ac62e33a99b0
child 1081: a54684572f14
permissions: -rw-r--r--

8027043: Turn global accesses into MethodHandle.constant, with one chance of reassignment, e.g. x = value occuring once in the global scope is ok, twice is not.
8027958: NASHORN TEST: Create tests to test markdown javascript engine work with Nashorn
8028345: Remove nashorn repo "bin" scripts to avoid confusion with JDK bin launcher programs
8029090: Developers should be able to pass nashorn properties and enable/disable JFR from command line
8030169: Need regression test for bug JDK-8010731
8033105: Make sure Nashorn test harness can run zlib benchmark
8033334: Make sure that scope depth information is maintained in the RecompilableScriptFunctionDatas, to avoid unnecessary slow proto linkage when doing on demand compilation
8034206: Make parts of code pipeline reusable in order to facilitate faster warmup and faster lazy compilation.
8035820: Optimistic recompilation
8035836: Array performance improvements
8036127: Prototype filter needs to be applied to getter guard as well, not just getter
8036986: Test should check that correctly type is returned running with optimistic. If optimistic assumption was wrong we should get the right one.
8037086: Check that deoptimizing recompilations are correct
8037177: -Dnashorn.optimistic should be enabled by default, meaning that it has to be explicitly set to false to run with the jdk 8 style conservative types
8037534: Use scope types to determine optimistic types
8037572: Add more test cases to check static types
8037967: Broke the build, by commiting without saving the last review comment
8038223: Symbol trace debug output takes time
8038396: fix for the compiler expression evaluator to be more inquisitive about types
8038398: OptimisticRecompilationTest fails on staging repo nashorn/jdk9/nashorn due to test framework
8038406: Testability: as a first step of moving loggers away from the process global space, the Debug object now supports logging POJOs from log entries as an event queue, which can be introspected from test scripts. This is way better than screen scraping brittle and subject-to-change log output.
8038413: NPE in unboxInteger
8038416: Access to undefined scoped variables deoptimized too much
8038426: Move all loggers from process wide scope into Global scope
8038799: Guard and unbox boxed primitives types on setting them in Properties to avoid megamorphisism
8038945: Simplify strict undefined checks
8039044: Expand undefined intrinsics for all commutative combinators of scrict undefined checks
8039746: Transform applies to calls wherever possible, for ScriptFunctions and JSObjects.
8040024: BranchOptimizer produces bad code for NaN FP comparison
8040089: Apply to call transform was incomplete. Now passes all tests and performance is back
8040093: Make sure that optimistic splitting works in optimistic types
8040102: Remove all references to Unsafe and definition of anonymous clases from the code
8040655: When processing a RewriteException debug object, the return value has already been reset to null. We need to catch this value before that.
8041434: Add synchronization to the common global constants structure
8041625: AccessorProperty currentType must only by Object.class when non-primitive, and scoping followup problem for lazily generated with bodies
8041905: Fix apply2call bug that prevented avatar.js unit tests from running correctly
8041995: Problems when loading tree expressions with several optimistic program points when optimistically initializing ObjectNodes
8042118: Separate types from symbols
8043002: Improve performance of Nashorn equality operators
8043003: Use strongly referenced generic invokers
8043004: Reduce variability at JavaAdapter call sites
8043132: Nashorn : all tests failed with java.security.AccessControlException
8043133: Fix corner cases of JDK-8041995
8043137: Collapse long sequences of NOP in Nashorn bytecode output
8043232: Index selection of overloaded java new constructors
8043235: Type-based optimizations interfere with continuation methods
8043431: Fix yet another corner case of JDK-8041995
8043504: Octane test harness was missing argument to print_always at one callsite, causing erroneous logging
8043605: Enable history for empty property maps
8043608: Make equality tests inline better
8043611: Move timing dependent benchmark for apply2call specialization to currently_failing. It is dependent that nothing takes machine time when doing the two runs, causing spurious assertions. Suggest running octane.raytrace manually instead to verify that this works, or incorporating it in the nightly test suite
8043632: Parallelize class installation and various script fixes.
8043633: In order to remove global state outside of contexts, make sure Timing class is an instance and not a static global collection of data. Move into Context. Move -Dnashorn.timing to an official logging option.
8043956: Make code caching work with optimistic typing and lazy compilation
8044012: Integrate the latest best known performance flags int ant octane jobs, and make sure that it's easy to compare 'ant octane-nashorn' and 'ant octane-v8' at the push of a button. (or rather; the entry of a command line)
8044102: Ensure bechmark exclude list for Octane benchmarks is in only one place, project.properties, and fix benchmark harness
8044154: Nashorn : all tests failed with java.security.AccessControlException
8044171: Make optimistic exception handlers smaller
8044502: Get rid of global optimistic flag
8044518: Ensure exceptions related to optimistic recompilation are not serializable
8044533: Deoptimizing negation produces wrong result for zero
8044534: Constant folding for unary + should produce int for boolean literals
8044760: Avoid PropertyMap duplicate for global instances
8044786: Some tests fail with non-optimistic compilation
8044803: Unnecessary restOf check
8044816: On-demand compiled top-level program doesn't need :createProgramFunction
8044851: nashorn properties leak memory
8046013: TypeError: Cannot apply "with" to non script object
8046014: MultiGlobalCompiledScript should cache :createProgramFunction handle
8046025: AccessorProperty.getGetter is not threadsafe
8046026: CompiledFunction.relinkComposableInvoker assert is being hit
8046201: Avoid repeated flattening of nested ConsStrings
8046215: Running uncompilable scripts throws NullPointerException
8046898: Make sure that lazy compilation is the default, remove redundant "enable lazy compilation" flags, added warning message if compile logging is enabled and lazy is switched off. Verified existing test suite code coverage equivalence between lazy and eager.
8046905: apply on apply is broken
8046921: Deoptimization type information peristence
8047035: (function() "hello")() crashes in Lexer with jdk9
8047057: Add a regression test for the passing test cases from JDK-8042304
8047067: all eval arguments need to be copied in Lower
8047078: Fuzzing bug discovered when ArrayLiteralNodes weren't immutable
8047166: 'do with({}) break ; while(0);' crashes in CodeGenerator
8047331: Assertion in CompiledFunction when running earley-boyer after Merge
8047357: More precise synthetic return + unreachable throw
8047359: large string size RangeError should be thrown rather than reporting negative length
8047369: Add regression tests for passing test cases of JDK-8024971
8047371: local variable declaration in TypeEvaluator should use ScriptObject.addOwnProperty instead of .set
8047728: (function(x){var o={x:0}; with(o){delete x} return o.x})() evaluates to 0 instead of undefined
8047959: bindings created for declarations in eval code are not mutable
8048009: Type info caching accidentally defeated
8048071: eval within 'with' statement does not use correct scope if with scope expression has a copy of eval
8048079: Persistent code store is broken after optimistic types merge
8048505: ScriptingFunctions.readFully couldn't handle file names represented as ConsStrings
8048586: String concatenation with optimistic types is slow
8048718: JSON.parse('{"0":0, "64":0}') throws ArrayindexOutOfBoundsException
8048869: Reduce compile time by about 5% by removing the Class.casts from the AST nodes
8049086: Minor API convenience functions on "Java" object
8049222: JSType class exposes public mutable arrays
8049223: RewriteException class exposes public mutable arrays
8049242: Explicit constructor overload selection should work with StaticClass as well
8049318: Test hideLocationProperties.js fails on Window due to backslash in path
8049524: Global object initialization via javax.script API should be minimal
8050432: javax.script.filename variable should not be enumerable with nashorn engine's ENGINE_SCOPE bindings
8050964: OptimisticTypesPersistence.java should use java.util.Date instead of java.sql.Date
8051019: Separate src and test execution sandbox directories
8051346: Test262 tests for ECMAScript 5 now in branch "es5-tests"
8051439: Wrong type calculated for ADD operator with undefined operand
8051839: GuardedInvocation needs to clone an argument
8053908: jdeps is not PATH on Mac, results in ant clean test failure on Mac
8053910: ScriptObjectMirror causing havoc with Invocation interface
8053913: Auto format caused warning in CompositeTypeBasedGuardingDynamicLinker
8054223: Nashorn: AssertionError when use __DIR__ and ScriptEngine.eval()
8054411: Add nashorn.args.prepend system property
8054503: test/script/external/test262/test/suite/ch12/12.6/12.6.4/12.6.4-2.js fails with tip
8054651: Global.initConstructor and ScriptFunction.getPrototype(Object) can have stricter types
8054898: Avoid creation of empty type info files
8054993: type info cache may be disabled for test262 and tests explicitly changing that property should use @fork
8055034: jjs exits interactive mode if exception was thrown when trying to print value of last evaluated expression
8055042: Compile-time expression evaluator was missing variables
8055107: Extension directives to turn on callsite profiling, tracing, AST print and other debug features locally
8055139: test/script/trusted/JDK-8055107.js fails with access control exception
8055186: Backport Nashorn optimistic typing to 8u repository
8055529: Clean up the bin directory
Reviewed-by: jlaskey, lagergren, sundar
Contributed-by: marcus.largergren@oracle.com, hannes.wallnoefer@oracle.com, sundararajan.athijegannathan@oracle.com

 /*
  * 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.
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 /*
  * This file is available under and governed by the GNU General Public
  * License version 2 only, as published by the Free Software Foundation.
  * However, the following notice accompanied the original version of this
  * file, and Oracle licenses the original version of this file under the BSD
  * license:
  */
 /*
    Copyright 2009-2013 Attila Szegedi
    Licensed under both the Apache License, Version 2.0 (the "Apache License")
    and the BSD License (the "BSD License"), with licensee being free to
    choose either of the two at their discretion.
    You may not use this file except in compliance with either the Apache
    License or the BSD License.
    If you choose to use this file in compliance with the Apache License, the
    following notice applies to you:
        You may obtain a copy of the Apache License at
            http://www.apache.org/licenses/LICENSE-2.0
        Unless required by applicable law or agreed to in writing, software
        distributed under the License is distributed on an "AS IS" BASIS,
        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
        implied. See the License for the specific language governing
        permissions and limitations under the License.
    If you choose to use this file in compliance with the BSD License, the
    following notice applies to you:
        Redistribution and use in source and binary forms, with or without
        modification, are permitted provided that the following conditions are
        met:
        * Redistributions of source code must retain the above copyright
          notice, this list of conditions and the following disclaimer.
        * Redistributions in binary form must reproduce the above copyright
          notice, this list of conditions and the following disclaimer in the
          documentation and/or other materials provided with the distribution.
        * Neither the name of the copyright holder nor the names of
          contributors may be used to endorse or promote products derived from
          this software without specific prior written permission.
        THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
        IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
        TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
        PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
        BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
        CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
        SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
        BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
        WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
        OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
        ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 package jdk.internal.dynalink.beans;
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
 import java.lang.invoke.MethodType;
 import java.lang.reflect.AccessibleObject;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Member;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import jdk.internal.dynalink.CallSiteDescriptor;
 import jdk.internal.dynalink.beans.GuardedInvocationComponent.ValidationType;
 import jdk.internal.dynalink.linker.GuardedInvocation;
 import jdk.internal.dynalink.linker.GuardingDynamicLinker;
 import jdk.internal.dynalink.linker.LinkRequest;
 import jdk.internal.dynalink.linker.LinkerServices;
 import jdk.internal.dynalink.support.CallSiteDescriptorFactory;
 import jdk.internal.dynalink.support.Guards;
 import jdk.internal.dynalink.support.Lookup;
 import jdk.internal.dynalink.support.TypeUtilities;
 /**
  * A base class for both {@link StaticClassLinker} and {@link BeanLinker}. Deals with common aspects of property
  * exposure and method calls for both static and instance facets of a class.
  *
  * @author Attila Szegedi
  */
 abstract class AbstractJavaLinker implements GuardingDynamicLinker {
     final Class<?> clazz;
     private final MethodHandle classGuard;
     private final MethodHandle assignableGuard;
     private final Map<String, AnnotatedDynamicMethod> propertyGetters = new HashMap<>();
     private final Map<String, DynamicMethod> propertySetters = new HashMap<>();
     private final Map<String, DynamicMethod> methods = new HashMap<>();
     AbstractJavaLinker(final Class<?> clazz, final MethodHandle classGuard) {
         this(clazz, classGuard, classGuard);
     }
     AbstractJavaLinker(final Class<?> clazz, final MethodHandle classGuard, final MethodHandle assignableGuard) {
         this.clazz = clazz;
         this.classGuard = classGuard;
         this.assignableGuard = assignableGuard;
         final FacetIntrospector introspector = createFacetIntrospector();
         // Add methods and properties
         for(final Method method: introspector.getMethods()) {
             final String name = method.getName();
             // Add method
             addMember(name, method, methods);
             // Add the method as a property getter and/or setter
             if(name.startsWith("get") && name.length() > 3 && method.getParameterTypes().length == 0) {
                 // Property getter
                 setPropertyGetter(method, 3);
             } else if(name.startsWith("is") && name.length() > 2 && method.getParameterTypes().length == 0 &&
                     method.getReturnType() == boolean.class) {
                 // Boolean property getter
                 setPropertyGetter(method, 2);
             } else if(name.startsWith("set") && name.length() > 3 && method.getParameterTypes().length == 1) {
                 // Property setter
                 addMember(decapitalize(name.substring(3)), method, propertySetters);
             }
         }
         // Add field getter/setters as property getters/setters.
         for(final Field field: introspector.getFields()) {
             final String name = field.getName();
             // Only add a property getter when one is not defined already as a getXxx()/isXxx() method.
             if(!propertyGetters.containsKey(name)) {
                 setPropertyGetter(name, introspector.unreflectGetter(field), ValidationType.EXACT_CLASS);
             }
             if(!(Modifier.isFinal(field.getModifiers()) || propertySetters.containsKey(name))) {
                 addMember(name, new SimpleDynamicMethod(introspector.unreflectSetter(field), clazz, name),
                         propertySetters);
             }
         }
         // Add inner classes, but only those for which we don't hide a property with it
         for(final Map.Entry<String, MethodHandle> innerClassSpec: introspector.getInnerClassGetters().entrySet()) {
             final String name = innerClassSpec.getKey();
             if(!propertyGetters.containsKey(name)) {
                 setPropertyGetter(name, innerClassSpec.getValue(), ValidationType.EXACT_CLASS);
             }
         }
     }
     private static String decapitalize(final String str) {
         assert str != null;
         if(str.isEmpty()) {
             return str;
         }
         final char c0 = str.charAt(0);
         if(Character.isLowerCase(c0)) {
             return str;
         }
         // If it has two consecutive upper-case characters, i.e. "URL", don't decapitalize
         if(str.length() > 1 && Character.isUpperCase(str.charAt(1))) {
             return str;
         }
         final char c[] = str.toCharArray();
         c[0] = Character.toLowerCase(c0);
         return new String(c);
     }
     abstract FacetIntrospector createFacetIntrospector();
     Collection<String> getReadablePropertyNames() {
         return getUnmodifiableKeys(propertyGetters);
     }
     Collection<String> getWritablePropertyNames() {
         return getUnmodifiableKeys(propertySetters);
     }
     Collection<String> getMethodNames() {
         return getUnmodifiableKeys(methods);
     }
     private static Collection<String> getUnmodifiableKeys(final Map<String, ?> m) {
         return Collections.unmodifiableCollection(m.keySet());
     }
     /**
      * Sets the specified dynamic method to be the property getter for the specified property. Note that you can only
      * use this when you're certain that the method handle does not belong to a caller-sensitive method. For properties
      * that are caller-sensitive, you must use {@link #setPropertyGetter(String, SingleDynamicMethod, ValidationType)}
      * instead.
      * @param name name of the property
      * @param handle the method handle that implements the property getter
      * @param validationType the validation type for the property
      */
     private void setPropertyGetter(final String name, final SingleDynamicMethod handle, final ValidationType validationType) {
         propertyGetters.put(name, new AnnotatedDynamicMethod(handle, validationType));
     }
     /**
      * Sets the specified reflective method to be the property getter for the specified property.
      * @param getter the getter method
      * @param prefixLen the getter prefix in the method name; should be 3 for getter names starting with "get" and 2 for
      * names starting with "is".
      */
     private void setPropertyGetter(final Method getter, final int prefixLen) {
         setPropertyGetter(decapitalize(getter.getName().substring(prefixLen)), createDynamicMethod(
                 getMostGenericGetter(getter)), ValidationType.INSTANCE_OF);
     }
     /**
      * Sets the specified method handle to be the property getter for the specified property. Note that you can only
      * use this when you're certain that the method handle does not belong to a caller-sensitive method. For properties
      * that are caller-sensitive, you must use {@link #setPropertyGetter(String, SingleDynamicMethod, ValidationType)}
      * instead.
      * @param name name of the property
      * @param handle the method handle that implements the property getter
      * @param validationType the validation type for the property
      */
     void setPropertyGetter(final String name, final MethodHandle handle, final ValidationType validationType) {
         setPropertyGetter(name, new SimpleDynamicMethod(handle, clazz, name), validationType);
     }
     private void addMember(final String name, final AccessibleObject ao, final Map<String, DynamicMethod> methodMap) {
         addMember(name, createDynamicMethod(ao), methodMap);
     }
     private void addMember(final String name, final SingleDynamicMethod method, final Map<String, DynamicMethod> methodMap) {
         final DynamicMethod existingMethod = methodMap.get(name);
         final DynamicMethod newMethod = mergeMethods(method, existingMethod, clazz, name);
         if(newMethod != existingMethod) {
             methodMap.put(name, newMethod);
         }
     }
     /**
      * Given one or more reflective methods or constructors, creates a dynamic method that represents them all. The
      * methods should represent all overloads of the same name (or all constructors of the class).
      * @param members the reflective members
      * @param clazz the class declaring the reflective members
      * @param name the common name of the reflective members.
      * @return a dynamic method representing all the specified reflective members.
      */
     static DynamicMethod createDynamicMethod(final Iterable<? extends AccessibleObject> members, final Class<?> clazz, final String name) {
         DynamicMethod dynMethod = null;
         for(final AccessibleObject method: members) {
             dynMethod = mergeMethods(createDynamicMethod(method), dynMethod, clazz, name);
         }
         return dynMethod;
     }
     /**
      * Given a reflective method or a constructor, creates a dynamic method that represents it. This method will
      * distinguish between caller sensitive and ordinary methods/constructors, and create appropriate caller sensitive
      * dynamic method when needed.
      * @param m the reflective member
      * @return the single dynamic method representing the reflective member
      */
     private static SingleDynamicMethod createDynamicMethod(final AccessibleObject m) {
         if(CallerSensitiveDetector.isCallerSensitive(m)) {
             return new CallerSensitiveDynamicMethod(m);
         }
         final Member member = (Member)m;
         return new SimpleDynamicMethod(unreflectSafely(m), member.getDeclaringClass(), member.getName(), m instanceof Constructor);
     }
     /**
      * Unreflects a method handle from a Method or a Constructor using safe (zero-privilege) unreflection. Should be
      * only used for methods and constructors that are not caller sensitive. If a caller sensitive method were
      * unreflected through this mechanism, it would not be a security issue, but would be bound to the zero-privilege
      * unreflector as its caller, and thus completely useless.
      * @param m the method or constructor
      * @return the method handle
      */
     private static MethodHandle unreflectSafely(final AccessibleObject m) {
         if(m instanceof Method) {
             final Method reflMethod = (Method)m;
             final MethodHandle handle = Lookup.PUBLIC.unreflect(reflMethod);
             if(Modifier.isStatic(reflMethod.getModifiers())) {
                 return StaticClassIntrospector.editStaticMethodHandle(handle);
             }
             return handle;
         }
         return StaticClassIntrospector.editConstructorMethodHandle(Lookup.PUBLIC.unreflectConstructor((Constructor<?>)m));
     }
     private static DynamicMethod mergeMethods(final SingleDynamicMethod method, final DynamicMethod existing, final Class<?> clazz, final String name) {
         if(existing == null) {
             return method;
         } else if(existing.contains(method)) {
             return existing;
         } else if(existing instanceof SingleDynamicMethod) {
             final OverloadedDynamicMethod odm = new OverloadedDynamicMethod(clazz, name);
             odm.addMethod(((SingleDynamicMethod)existing));
             odm.addMethod(method);
             return odm;
         } else if(existing instanceof OverloadedDynamicMethod) {
             ((OverloadedDynamicMethod)existing).addMethod(method);
             return existing;
         }
         throw new AssertionError();
     }
     @Override
     public GuardedInvocation getGuardedInvocation(final LinkRequest request, final LinkerServices linkerServices)
             throws Exception {
         final LinkRequest ncrequest = request.withoutRuntimeContext();
         // BeansLinker already checked that the name is at least 2 elements long and the first element is "dyn".
         final CallSiteDescriptor callSiteDescriptor = ncrequest.getCallSiteDescriptor();
         final String op = callSiteDescriptor.getNameToken(CallSiteDescriptor.OPERATOR);
         // Either dyn:callMethod:name(this[,args]) or dyn:callMethod(this,name[,args]).
         if("callMethod" == op) {
             return getCallPropWithThis(callSiteDescriptor, linkerServices);
         }
         List<String> operations = CallSiteDescriptorFactory.tokenizeOperators(callSiteDescriptor);
         while(!operations.isEmpty()) {
             final GuardedInvocationComponent gic = getGuardedInvocationComponent(callSiteDescriptor, linkerServices,
                     operations);
             if(gic != null) {
                 return gic.getGuardedInvocation();
             }
             operations = pop(operations);
         }
         return null;
     }
     protected GuardedInvocationComponent getGuardedInvocationComponent(final CallSiteDescriptor callSiteDescriptor,
             final LinkerServices linkerServices, final List<String> operations) throws Exception {
         if(operations.isEmpty()) {
             return null;
         }
         final String op = operations.get(0);
         // Either dyn:getProp:name(this) or dyn:getProp(this, name)
         if("getProp".equals(op)) {
             return getPropertyGetter(callSiteDescriptor, linkerServices, pop(operations));
         }
         // Either dyn:setProp:name(this, value) or dyn:setProp(this, name, value)
         if("setProp".equals(op)) {
             return getPropertySetter(callSiteDescriptor, linkerServices, pop(operations));
         }
         // Either dyn:getMethod:name(this), or dyn:getMethod(this, name)
         if("getMethod".equals(op)) {
             return getMethodGetter(callSiteDescriptor, linkerServices, pop(operations));
         }
         return null;
     }
     static final <T> List<T> pop(final List<T> l) {
         return l.subList(1, l.size());
     }
     MethodHandle getClassGuard(final CallSiteDescriptor desc) {
         return getClassGuard(desc.getMethodType());
     }
     MethodHandle getClassGuard(final MethodType type) {
         return Guards.asType(classGuard, type);
     }
     GuardedInvocationComponent getClassGuardedInvocationComponent(final MethodHandle invocation, final MethodType type) {
         return new GuardedInvocationComponent(invocation, getClassGuard(type), clazz, ValidationType.EXACT_CLASS);
     }
     SingleDynamicMethod getConstructorMethod(final String signature) {
         return null;
     }
     private MethodHandle getAssignableGuard(final MethodType type) {
         return Guards.asType(assignableGuard, type);
     }
     private GuardedInvocation getCallPropWithThis(final CallSiteDescriptor callSiteDescriptor, final LinkerServices linkerServices) {
         switch(callSiteDescriptor.getNameTokenCount()) {
             case 3: {
                 return createGuardedDynamicMethodInvocation(callSiteDescriptor, linkerServices,
                         callSiteDescriptor.getNameToken(CallSiteDescriptor.NAME_OPERAND), methods);
             }
             default: {
                 return null;
             }
         }
     }
     private GuardedInvocation createGuardedDynamicMethodInvocation(final CallSiteDescriptor callSiteDescriptor,
             final LinkerServices linkerServices, final String methodName, final Map<String, DynamicMethod> methodMap){
         final MethodHandle inv = getDynamicMethodInvocation(callSiteDescriptor, linkerServices, methodName, methodMap);
         return inv == null ? null : new GuardedInvocation(inv, getClassGuard(callSiteDescriptor.getMethodType()));
     }
     private MethodHandle getDynamicMethodInvocation(final CallSiteDescriptor callSiteDescriptor,
             final LinkerServices linkerServices, final String methodName, final Map<String, DynamicMethod> methodMap) {
         final DynamicMethod dynaMethod = getDynamicMethod(methodName, methodMap);
         return dynaMethod != null ? dynaMethod.getInvocation(callSiteDescriptor, linkerServices) : null;
     }
     private DynamicMethod getDynamicMethod(final String methodName, final Map<String, DynamicMethod> methodMap) {
         final DynamicMethod dynaMethod = methodMap.get(methodName);
         return dynaMethod != null ? dynaMethod : getExplicitSignatureDynamicMethod(methodName, methodMap);
     }
     private SingleDynamicMethod getExplicitSignatureDynamicMethod(final String fullName,
             final Map<String, DynamicMethod> methodsMap) {
         // What's below is meant to support the "name(type, type, ...)" syntax that programmers can use in a method name
         // to manually pin down an exact overloaded variant. This is not usually required, as the overloaded method
         // resolution works correctly in almost every situation. However, in presence of many language-specific
         // conversions with a radically dynamic language, most overloaded methods will end up being constantly selected
         // at invocation time, so a programmer knowledgeable of the situation might choose to pin down an exact overload
         // for performance reasons.
         // Is the method name lexically of the form "name(types)"?
         final int lastChar = fullName.length() - 1;
         if(fullName.charAt(lastChar) != ')') {
             return null;
         }
         final int openBrace = fullName.indexOf('(');
         if(openBrace == -1) {
             return null;
         }
         final String name = fullName.substring(0, openBrace);
         final String signature = fullName.substring(openBrace + 1, lastChar);
         // Find an existing method for the "name" part
         final DynamicMethod simpleNamedMethod = methodsMap.get(name);
         if(simpleNamedMethod == null) {
             // explicit signature constructor access
             // Java.type("java.awt.Color")["(int,int,int)"]
             // will get Color(int,int,int) constructor of Color class.
             if (name.isEmpty()) {
                 return getConstructorMethod(signature);
             }
             return null;
         }
         // Try to get a narrowed dynamic method for the explicit parameter types.
         return simpleNamedMethod.getMethodForExactParamTypes(signature);
     }
     private static final MethodHandle IS_METHOD_HANDLE_NOT_NULL = Guards.isNotNull().asType(MethodType.methodType(
             boolean.class, MethodHandle.class));
     private static final MethodHandle CONSTANT_NULL_DROP_METHOD_HANDLE = MethodHandles.dropArguments(
             MethodHandles.constant(Object.class, null), 0, MethodHandle.class);
     private GuardedInvocationComponent getPropertySetter(final CallSiteDescriptor callSiteDescriptor,
             final LinkerServices linkerServices, final List<String> operations) throws Exception {
         switch(callSiteDescriptor.getNameTokenCount()) {
             case 2: {
                 // Must have three arguments: target object, property name, and property value.
                 assertParameterCount(callSiteDescriptor, 3);
                 // We want setters that conform to "Object(O, V)". Note, we aren't doing "R(O, V)" as it might not be
                 // valid for us to convert return values proactively. Also, since we don't know what setters will be
                 // invoked, we'll conservatively presume Object return type.
                 final MethodType type = callSiteDescriptor.getMethodType().changeReturnType(Object.class);
                 // What's below is basically:
                 //   foldArguments(guardWithTest(isNotNull, invoke, null|nextComponent.invocation),
                 //     get_setter_handle(type, linkerServices))
                 // only with a bunch of method signature adjustments. Basically, retrieve method setter
                 // MethodHandle; if it is non-null, invoke it, otherwise either return null, or delegate to next
                 // component's invocation.
                 // Call site type is "ret_type(object_type,property_name_type,property_value_type)", which we'll
                 // abbreviate to R(O, N, V) going forward, although we don't really use R here (see above about using
                 // Object return type).
                 final MethodType setterType = type.dropParameterTypes(1, 2);
                 // Bind property setter handle to the expected setter type and linker services. Type is
                 // MethodHandle(Object, String, Object)
                 final MethodHandle boundGetter = MethodHandles.insertArguments(getPropertySetterHandle, 0,
                         CallSiteDescriptorFactory.dropParameterTypes(callSiteDescriptor, 1, 2), linkerServices);
                 // Cast getter to MethodHandle(O, N, V)
                 final MethodHandle typedGetter = linkerServices.asType(boundGetter, type.changeReturnType(
                         MethodHandle.class));
                 // Handle to invoke the setter R(MethodHandle, O, V)
                 final MethodHandle invokeHandle = MethodHandles.exactInvoker(setterType);
                 // Handle to invoke the setter, dropping unnecessary fold arguments R(MethodHandle, O, N, V)
                 final MethodHandle invokeHandleFolded = MethodHandles.dropArguments(invokeHandle, 2, type.parameterType(
 ));
                 final GuardedInvocationComponent nextComponent = getGuardedInvocationComponent(callSiteDescriptor,
                         linkerServices, operations);
                 final MethodHandle fallbackFolded;
                 if(nextComponent == null) {
                     // Object(MethodHandle)->Object(MethodHandle, O, N, V); returns constant null
                     fallbackFolded = MethodHandles.dropArguments(CONSTANT_NULL_DROP_METHOD_HANDLE, 1,
                             type.parameterList()).asType(type.insertParameterTypes(0, MethodHandle.class));
                 } else {
                     // Object(O, N, V)->Object(MethodHandle, O, N, V); adapts the next component's invocation to drop the
                     // extra argument resulting from fold
                     fallbackFolded = MethodHandles.dropArguments(nextComponent.getGuardedInvocation().getInvocation(),
 , MethodHandle.class);
                 }
                 // fold(R(MethodHandle, O, N, V), MethodHandle(O, N, V))
                 final MethodHandle compositeSetter = MethodHandles.foldArguments(MethodHandles.guardWithTest(
                             IS_METHOD_HANDLE_NOT_NULL, invokeHandleFolded, fallbackFolded), typedGetter);
                 if(nextComponent == null) {
                     return getClassGuardedInvocationComponent(compositeSetter, type);
                 }
                 return nextComponent.compose(compositeSetter, getClassGuard(type), clazz, ValidationType.EXACT_CLASS);
             }
             case 3: {
                 // Must have two arguments: target object and property value
                 assertParameterCount(callSiteDescriptor, 2);
                 final GuardedInvocation gi = createGuardedDynamicMethodInvocation(callSiteDescriptor, linkerServices,
                         callSiteDescriptor.getNameToken(CallSiteDescriptor.NAME_OPERAND), propertySetters);
                 // If we have a property setter with this name, this composite operation will always stop here
                 if(gi != null) {
                     return new GuardedInvocationComponent(gi, clazz, ValidationType.EXACT_CLASS);
                 }
                 // If we don't have a property setter with this name, always fall back to the next operation in the
                 // composite (if any)
                 return getGuardedInvocationComponent(callSiteDescriptor, linkerServices, operations);
             }
             default: {
                 // More than two name components; don't know what to do with it.
                 return null;
             }
         }
     }
     private static final Lookup privateLookup = new Lookup(MethodHandles.lookup());
     private static final MethodHandle IS_ANNOTATED_METHOD_NOT_NULL = Guards.isNotNull().asType(MethodType.methodType(
             boolean.class, AnnotatedDynamicMethod.class));
     private static final MethodHandle CONSTANT_NULL_DROP_ANNOTATED_METHOD = MethodHandles.dropArguments(
             MethodHandles.constant(Object.class, null), 0, AnnotatedDynamicMethod.class);
     private static final MethodHandle GET_ANNOTATED_METHOD = privateLookup.findVirtual(AnnotatedDynamicMethod.class,
             "getTarget", MethodType.methodType(MethodHandle.class, MethodHandles.Lookup.class));
     private static final MethodHandle GETTER_INVOKER = MethodHandles.invoker(MethodType.methodType(Object.class, Object.class));
     private GuardedInvocationComponent getPropertyGetter(final CallSiteDescriptor callSiteDescriptor,
             final LinkerServices linkerServices, final List<String> ops) throws Exception {
         switch(callSiteDescriptor.getNameTokenCount()) {
             case 2: {
                 // Since we can't know what kind of a getter we'll get back on different invocations, we'll just
                 // conservatively presume Object. Note we can't just coerce to a narrower call site type as the linking
                 // runtime might not allow coercing at that call site.
                 final MethodType type = callSiteDescriptor.getMethodType().changeReturnType(Object.class);
                 // Must have exactly two arguments: receiver and name
                 assertParameterCount(callSiteDescriptor, 2);
                 // What's below is basically:
                 //   foldArguments(guardWithTest(isNotNull, invoke(get_handle), null|nextComponent.invocation), get_getter_handle)
                 // only with a bunch of method signature adjustments. Basically, retrieve method getter
                 // AnnotatedDynamicMethod; if it is non-null, invoke its "handle" field, otherwise either return null,
                 // or delegate to next component's invocation.
                 final MethodHandle typedGetter = linkerServices.asType(getPropertyGetterHandle, type.changeReturnType(
                         AnnotatedDynamicMethod.class));
                 final MethodHandle callSiteBoundMethodGetter = MethodHandles.insertArguments(
                         GET_ANNOTATED_METHOD, 1, callSiteDescriptor.getLookup());
                 final MethodHandle callSiteBoundInvoker = MethodHandles.filterArguments(GETTER_INVOKER, 0,
                         callSiteBoundMethodGetter);
                 // Object(AnnotatedDynamicMethod, Object)->Object(AnnotatedDynamicMethod, T0)
                 final MethodHandle invokeHandleTyped = linkerServices.asType(callSiteBoundInvoker,
                         MethodType.methodType(type.returnType(), AnnotatedDynamicMethod.class, type.parameterType(0)));
                 // Since it's in the target of a fold, drop the unnecessary second argument
                 // Object(AnnotatedDynamicMethod, T0)->Object(AnnotatedDynamicMethod, T0, T1)
                 final MethodHandle invokeHandleFolded = MethodHandles.dropArguments(invokeHandleTyped, 2,
                         type.parameterType(1));
                 final GuardedInvocationComponent nextComponent = getGuardedInvocationComponent(callSiteDescriptor,
                         linkerServices, ops);
                 final MethodHandle fallbackFolded;
                 if(nextComponent == null) {
                     // Object(AnnotatedDynamicMethod)->Object(AnnotatedDynamicMethod, T0, T1); returns constant null
                     fallbackFolded = MethodHandles.dropArguments(CONSTANT_NULL_DROP_ANNOTATED_METHOD, 1,
                             type.parameterList()).asType(type.insertParameterTypes(0, AnnotatedDynamicMethod.class));
                 } else {
                     // Object(T0, T1)->Object(AnnotatedDynamicMethod, T0, T1); adapts the next component's invocation to
                     // drop the extra argument resulting from fold and to change its return type to Object.
                     final MethodHandle nextInvocation = nextComponent.getGuardedInvocation().getInvocation();
                     final MethodType nextType = nextInvocation.type();
                     fallbackFolded = MethodHandles.dropArguments(nextInvocation.asType(
                             nextType.changeReturnType(Object.class)), 0, AnnotatedDynamicMethod.class);
                 }
                 // fold(Object(AnnotatedDynamicMethod, T0, T1), AnnotatedDynamicMethod(T0, T1))
                 final MethodHandle compositeGetter = MethodHandles.foldArguments(MethodHandles.guardWithTest(
                             IS_ANNOTATED_METHOD_NOT_NULL, invokeHandleFolded, fallbackFolded), typedGetter);
                 if(nextComponent == null) {
                     return getClassGuardedInvocationComponent(compositeGetter, type);
                 }
                 return nextComponent.compose(compositeGetter, getClassGuard(type), clazz, ValidationType.EXACT_CLASS);
             }
             case 3: {
                 // Must have exactly one argument: receiver
                 assertParameterCount(callSiteDescriptor, 1);
                 // Fixed name
                 final AnnotatedDynamicMethod annGetter = propertyGetters.get(callSiteDescriptor.getNameToken(
                         CallSiteDescriptor.NAME_OPERAND));
                 if(annGetter == null) {
                     // We have no such property, always delegate to the next component operation
                     return getGuardedInvocationComponent(callSiteDescriptor, linkerServices, ops);
                 }
                 final MethodHandle getter = annGetter.getInvocation(callSiteDescriptor, linkerServices);
                 // NOTE: since property getters (not field getters!) are no-arg, we don't have to worry about them being
                 // overloaded in a subclass. Therefore, we can discover the most abstract superclass that has the
                 // method, and use that as the guard with Guards.isInstance() for a more stably linked call site. If
                 // we're linking against a field getter, don't make the assumption.
                 // NOTE: No delegation to the next component operation if we have a property with this name, even if its
                 // value is null.
                 final ValidationType validationType = annGetter.validationType;
                 // TODO: we aren't using the type that declares the most generic getter here!
                 return new GuardedInvocationComponent(getter, getGuard(validationType,
                         callSiteDescriptor.getMethodType()), clazz, validationType);
             }
             default: {
                 // Can't do anything with more than 3 name components
                 return null;
             }
         }
     }
     private MethodHandle getGuard(final ValidationType validationType, final MethodType methodType) {
         switch(validationType) {
             case EXACT_CLASS: {
                 return getClassGuard(methodType);
             }
             case INSTANCE_OF: {
                 return getAssignableGuard(methodType);
             }
             case IS_ARRAY: {
                 return Guards.isArray(0, methodType);
             }
             case NONE: {
                 return null;
             }
             default: {
                 throw new AssertionError();
             }
         }
     }
     private static final MethodHandle IS_DYNAMIC_METHOD = Guards.isInstance(DynamicMethod.class,
             MethodType.methodType(boolean.class, Object.class));
     private static final MethodHandle OBJECT_IDENTITY = MethodHandles.identity(Object.class);
     private GuardedInvocationComponent getMethodGetter(final CallSiteDescriptor callSiteDescriptor,
             final LinkerServices linkerServices, final List<String> ops) throws Exception {
         // The created method handle will always return a DynamicMethod (or null), but since we don't want that type to
         // be visible outside of this linker, declare it to return Object.
         final MethodType type = callSiteDescriptor.getMethodType().changeReturnType(Object.class);
         switch(callSiteDescriptor.getNameTokenCount()) {
             case 2: {
                 // Must have exactly two arguments: receiver and name
                 assertParameterCount(callSiteDescriptor, 2);
                 final GuardedInvocationComponent nextComponent = getGuardedInvocationComponent(callSiteDescriptor,
                         linkerServices, ops);
                 if(nextComponent == null || !TypeUtilities.areAssignable(DynamicMethod.class,
                         nextComponent.getGuardedInvocation().getInvocation().type().returnType())) {
                     // No next component operation, or it can never produce a dynamic method; just return a component
                     // for this operation.
                     return getClassGuardedInvocationComponent(linkerServices.asType(getDynamicMethod, type), type);
                 }
                 // What's below is basically:
                 // foldArguments(guardWithTest(isNotNull, identity, nextComponent.invocation), getter) only with a
                 // bunch of method signature adjustments. Basically, execute method getter; if it returns a non-null
                 // DynamicMethod, use identity to return it, otherwise delegate to nextComponent's invocation.
                 final MethodHandle typedGetter = linkerServices.asType(getDynamicMethod, type);
                 // Since it is part of the foldArgument() target, it will have extra args that we need to drop.
                 final MethodHandle returnMethodHandle = linkerServices.asType(MethodHandles.dropArguments(
                         OBJECT_IDENTITY, 1, type.parameterList()), type.insertParameterTypes(0, Object.class));
                 final MethodHandle nextComponentInvocation = nextComponent.getGuardedInvocation().getInvocation();
                 // The assumption is that getGuardedInvocationComponent() already asType()'d it correctly modulo the
                 // return type.
                 assert nextComponentInvocation.type().changeReturnType(type.returnType()).equals(type);
                 // Since it is part of the foldArgument() target, we have to drop an extra arg it receives.
                 final MethodHandle nextCombinedInvocation = MethodHandles.dropArguments(nextComponentInvocation, 0,
                         Object.class);
                 // Assemble it all into a fold(guard(isNotNull, identity, nextInvocation), get)
                 final MethodHandle compositeGetter = MethodHandles.foldArguments(MethodHandles.guardWithTest(
                         IS_DYNAMIC_METHOD, returnMethodHandle, nextCombinedInvocation), typedGetter);
                 return nextComponent.compose(compositeGetter, getClassGuard(type), clazz, ValidationType.EXACT_CLASS);
             }
             case 3: {
                 // Must have exactly one argument: receiver
                 assertParameterCount(callSiteDescriptor, 1);
                 final DynamicMethod method = getDynamicMethod(callSiteDescriptor.getNameToken(
                         CallSiteDescriptor.NAME_OPERAND));
                 if(method == null) {
                     // We have no such method, always delegate to the next component
                     return getGuardedInvocationComponent(callSiteDescriptor, linkerServices, ops);
                 }
                 // No delegation to the next component of the composite operation; if we have a method with that name,
                 // we'll always return it at this point.
                 return getClassGuardedInvocationComponent(linkerServices.asType(MethodHandles.dropArguments(
                         MethodHandles.constant(Object.class, method), 0, type.parameterType(0)), type), type);
             }
             default: {
                 // Can't do anything with more than 3 name components
                 return null;
             }
         }
     }
     static class MethodPair {
         final MethodHandle method1;
         final MethodHandle method2;
         MethodPair(final MethodHandle method1, final MethodHandle method2) {
             this.method1 = method1;
             this.method2 = method2;
         }
         MethodHandle guardWithTest(final MethodHandle test) {
             return MethodHandles.guardWithTest(test, method1, method2);
         }
     }
     static MethodPair matchReturnTypes(final MethodHandle m1, final MethodHandle m2) {
         final MethodType type1 = m1.type();
         final MethodType type2 = m2.type();
         final Class<?> commonRetType = TypeUtilities.getCommonLosslessConversionType(type1.returnType(),
                 type2.returnType());
         return new MethodPair(
                 m1.asType(type1.changeReturnType(commonRetType)),
                 m2.asType(type2.changeReturnType(commonRetType)));
     }
     private static void assertParameterCount(final CallSiteDescriptor descriptor, final int paramCount) {
         if(descriptor.getMethodType().parameterCount() != paramCount) {
             throw new BootstrapMethodError(descriptor.getName() + " must have exactly " + paramCount + " parameters.");
         }
     }
     private static MethodHandle GET_PROPERTY_GETTER_HANDLE = MethodHandles.dropArguments(privateLookup.findOwnSpecial(
             "getPropertyGetterHandle", Object.class, Object.class), 1, Object.class);
     private final MethodHandle getPropertyGetterHandle = GET_PROPERTY_GETTER_HANDLE.bindTo(this);
     /**
      * @param id the property ID
      * @return the method handle for retrieving the property, or null if the property does not exist
      */
     @SuppressWarnings("unused")
     private Object getPropertyGetterHandle(final Object id) {
         return propertyGetters.get(id);
     }
     // Type is MethodHandle(BeanLinker, MethodType, LinkerServices, Object, String, Object), of which the two "Object"
     // args are dropped; this makes handles with first three args conform to "Object, String, Object" though, which is
     // a typical property setter with variable name signature (target, name, value).
     private static final MethodHandle GET_PROPERTY_SETTER_HANDLE = MethodHandles.dropArguments(MethodHandles.dropArguments(
             privateLookup.findOwnSpecial("getPropertySetterHandle", MethodHandle.class, CallSiteDescriptor.class,
                     LinkerServices.class, Object.class), 3, Object.class), 5, Object.class);
     // Type is MethodHandle(MethodType, LinkerServices, Object, String, Object)
     private final MethodHandle getPropertySetterHandle = GET_PROPERTY_SETTER_HANDLE.bindTo(this);
     @SuppressWarnings("unused")
     private MethodHandle getPropertySetterHandle(final CallSiteDescriptor setterDescriptor, final LinkerServices linkerServices,
             final Object id) {
         return getDynamicMethodInvocation(setterDescriptor, linkerServices, String.valueOf(id), propertySetters);
     }
     private static MethodHandle GET_DYNAMIC_METHOD = MethodHandles.dropArguments(privateLookup.findOwnSpecial(
             "getDynamicMethod", Object.class, Object.class), 1, Object.class);
     private final MethodHandle getDynamicMethod = GET_DYNAMIC_METHOD.bindTo(this);
     @SuppressWarnings("unused")
     // This method is marked to return Object instead of DynamicMethod as it's used as a linking component and we don't
     // want to make the DynamicMethod type observable externally (e.g. as the return type of a MethodHandle returned for
     // "dyn:getMethod" linking).
     private Object getDynamicMethod(final Object name) {
         return getDynamicMethod(String.valueOf(name), methods);
     }
     /**
      * Returns a dynamic method of the specified name.
      *
      * @param name name of the method
      * @return the dynamic method (either {@link SimpleDynamicMethod} or {@link OverloadedDynamicMethod}, or null if the
      * method with the specified name does not exist.
      */
     DynamicMethod getDynamicMethod(final String name) {
         return getDynamicMethod(name, methods);
     }
     /**
      * Find the most generic superclass that declares this getter. Since getters have zero args (aside from the
      * receiver), they can't be overloaded, so we're free to link with an instanceof guard for the most generic one,
      * creating more stable call sites.
      * @param getter the getter
      * @return getter with same name, declared on the most generic superclass/interface of the declaring class
      */
     private static Method getMostGenericGetter(final Method getter) {
         return getMostGenericGetter(getter.getName(), getter.getReturnType(), getter.getDeclaringClass());
     }
     private static Method getMostGenericGetter(final String name, final Class<?> returnType, final Class<?> declaringClass) {
         if(declaringClass == null) {
             return null;
         }
         // Prefer interfaces
         for(final Class<?> itf: declaringClass.getInterfaces()) {
             final Method itfGetter = getMostGenericGetter(name, returnType, itf);
             if(itfGetter != null) {
                 return itfGetter;
             }
         }
         final Method superGetter = getMostGenericGetter(name, returnType, declaringClass.getSuperclass());
         if(superGetter != null) {
             return superGetter;
         }
         if(!CheckRestrictedPackage.isRestrictedClass(declaringClass)) {
             try {
                 return declaringClass.getMethod(name);
             } catch(final NoSuchMethodException e) {
                 // Intentionally ignored, meant to fall through
             }
         }
         return null;
     }
     private static final class AnnotatedDynamicMethod {
         private final SingleDynamicMethod method;
         /*private*/ final ValidationType validationType;
         AnnotatedDynamicMethod(final SingleDynamicMethod method, final ValidationType validationType) {
             this.method = method;
             this.validationType = validationType;
         }
         MethodHandle getInvocation(final CallSiteDescriptor callSiteDescriptor, final LinkerServices linkerServices) {
             return method.getInvocation(callSiteDescriptor, linkerServices);
         }
         @SuppressWarnings("unused")
         MethodHandle getTarget(final MethodHandles.Lookup lookup) {
             final MethodHandle inv = method.getTarget(lookup);
             assert inv != null;
             return inv;
         }
     }
 }

Mercurial > jdk8-mips64-public > nashorn / annotate

src/jdk/internal/dynalink/beans/AbstractJavaLinker.java@e2497b11a021 (annotated)

src/jdk/internal/dynalink/beans/AbstractJavaLinker.java