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Diffstat (limited to 'src/jdk/internal/dynalink/beans/BeanLinker.java')
| -rw-r--r-- | src/jdk/internal/dynalink/beans/BeanLinker.java | 520 |
1 files changed, 0 insertions, 520 deletions
diff --git a/src/jdk/internal/dynalink/beans/BeanLinker.java b/src/jdk/internal/dynalink/beans/BeanLinker.java deleted file mode 100644 index a7dad71f..00000000 --- a/src/jdk/internal/dynalink/beans/BeanLinker.java +++ /dev/null @@ -1,520 +0,0 @@ -/* - * 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. - */ - -/* - * 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.Array; -import java.util.Collection; -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.LinkerServices; -import jdk.internal.dynalink.linker.TypeBasedGuardingDynamicLinker; -import jdk.internal.dynalink.support.Guards; -import jdk.internal.dynalink.support.Lookup; -import jdk.internal.dynalink.support.TypeUtilities; - -/** - * A class that provides linking capabilities for a single POJO class. Normally not used directly, but managed by - * {@link BeansLinker}. - * - * @author Attila Szegedi - */ -class BeanLinker extends AbstractJavaLinker implements TypeBasedGuardingDynamicLinker { - BeanLinker(final Class<?> clazz) { - super(clazz, Guards.getClassGuard(clazz), Guards.getInstanceOfGuard(clazz)); - if(clazz.isArray()) { - // Some languages won't have a notion of manipulating collections. Exposing "length" on arrays as an - // explicit property is beneficial for them. - // REVISIT: is it maybe a code smell that "dyn:getLength" is not needed? - setPropertyGetter("length", GET_ARRAY_LENGTH, ValidationType.IS_ARRAY); - } else if(List.class.isAssignableFrom(clazz)) { - setPropertyGetter("length", GET_COLLECTION_LENGTH, ValidationType.INSTANCE_OF); - } - } - - @Override - public boolean canLinkType(final Class<?> type) { - return type == clazz; - } - - @Override - FacetIntrospector createFacetIntrospector() { - return new BeanIntrospector(clazz); - } - - @Override - protected GuardedInvocationComponent getGuardedInvocationComponent(final CallSiteDescriptor callSiteDescriptor, - final LinkerServices linkerServices, final List<String> operations) throws Exception { - final GuardedInvocationComponent superGic = super.getGuardedInvocationComponent(callSiteDescriptor, - linkerServices, operations); - if(superGic != null) { - return superGic; - } - if(operations.isEmpty()) { - return null; - } - final String op = operations.get(0); - // dyn:getElem(this, id) - // id is typically either an int (for arrays and lists) or an object (for maps). linkerServices can provide - // conversion from call site argument type though. - if("getElem".equals(op)) { - return getElementGetter(callSiteDescriptor, linkerServices, pop(operations)); - } - if("setElem".equals(op)) { - return getElementSetter(callSiteDescriptor, linkerServices, pop(operations)); - } - // dyn:getLength(this) (works on Java arrays, collections, and maps) - if("getLength".equals(op)) { - return getLengthGetter(callSiteDescriptor); - } - return null; - } - - private static MethodHandle GET_LIST_ELEMENT = Lookup.PUBLIC.findVirtual(List.class, "get", - MethodType.methodType(Object.class, int.class)); - - private static MethodHandle GET_MAP_ELEMENT = Lookup.PUBLIC.findVirtual(Map.class, "get", - MethodType.methodType(Object.class, Object.class)); - - private static MethodHandle LIST_GUARD = Guards.getInstanceOfGuard(List.class); - private static MethodHandle MAP_GUARD = Guards.getInstanceOfGuard(Map.class); - - private enum CollectionType { - ARRAY, LIST, MAP - }; - - private GuardedInvocationComponent getElementGetter(final CallSiteDescriptor callSiteDescriptor, - final LinkerServices linkerServices, final List<String> operations) throws Exception { - final MethodType callSiteType = callSiteDescriptor.getMethodType(); - final Class<?> declaredType = callSiteType.parameterType(0); - final GuardedInvocationComponent nextComponent = getGuardedInvocationComponent(callSiteDescriptor, - linkerServices, operations); - - // If declared type of receiver at the call site is already an array, a list or map, bind without guard. Thing - // is, it'd be quite stupid of a call site creator to go though invokedynamic when it knows in advance they're - // dealing with an array, or a list or map, but hey... - // Note that for arrays and lists, using LinkerServices.asType() will ensure that any language specific linkers - // in use will get a chance to perform any (if there's any) implicit conversion to integer for the indices. - final GuardedInvocationComponent gic; - final CollectionType collectionType; - if(declaredType.isArray()) { - gic = createInternalFilteredGuardedInvocationComponent(MethodHandles.arrayElementGetter(declaredType), linkerServices); - collectionType = CollectionType.ARRAY; - } else if(List.class.isAssignableFrom(declaredType)) { - gic = createInternalFilteredGuardedInvocationComponent(GET_LIST_ELEMENT, linkerServices); - collectionType = CollectionType.LIST; - } else if(Map.class.isAssignableFrom(declaredType)) { - gic = createInternalFilteredGuardedInvocationComponent(GET_MAP_ELEMENT, linkerServices); - collectionType = CollectionType.MAP; - } else if(clazz.isArray()) { - gic = getClassGuardedInvocationComponent(linkerServices.filterInternalObjects(MethodHandles.arrayElementGetter(clazz)), callSiteType); - collectionType = CollectionType.ARRAY; - } else if(List.class.isAssignableFrom(clazz)) { - gic = createInternalFilteredGuardedInvocationComponent(GET_LIST_ELEMENT, Guards.asType(LIST_GUARD, callSiteType), List.class, ValidationType.INSTANCE_OF, - linkerServices); - collectionType = CollectionType.LIST; - } else if(Map.class.isAssignableFrom(clazz)) { - gic = createInternalFilteredGuardedInvocationComponent(GET_MAP_ELEMENT, Guards.asType(MAP_GUARD, callSiteType), Map.class, ValidationType.INSTANCE_OF, - linkerServices); - collectionType = CollectionType.MAP; - } else { - // Can't retrieve elements for objects that are neither arrays, nor list, nor maps. - return nextComponent; - } - - // We can have "dyn:getElem:foo", especially in composites, i.e. "dyn:getElem|getProp|getMethod:foo" - final String fixedKey = getFixedKey(callSiteDescriptor); - // Convert the key to a number if we're working with a list or array - final Object typedFixedKey; - if(collectionType != CollectionType.MAP && fixedKey != null) { - typedFixedKey = convertKeyToInteger(fixedKey, linkerServices); - if(typedFixedKey == null) { - // key is not numeric, it can never succeed - return nextComponent; - } - } else { - typedFixedKey = fixedKey; - } - - final GuardedInvocation gi = gic.getGuardedInvocation(); - final Binder binder = new Binder(linkerServices, callSiteType, typedFixedKey); - final MethodHandle invocation = gi.getInvocation(); - - if(nextComponent == null) { - return gic.replaceInvocation(binder.bind(invocation)); - } - - final MethodHandle checkGuard; - switch(collectionType) { - case LIST: - checkGuard = convertArgToInt(RANGE_CHECK_LIST, linkerServices, callSiteDescriptor); - break; - case MAP: - // TODO: A more complex solution could be devised for maps, one where we do a get() first, and fold it - // into a GWT that tests if it returned null, and if it did, do another GWT with containsKey() - // that returns constant null (on true), or falls back to next component (on false) - checkGuard = linkerServices.filterInternalObjects(CONTAINS_MAP); - break; - case ARRAY: - checkGuard = convertArgToInt(RANGE_CHECK_ARRAY, linkerServices, callSiteDescriptor); - break; - default: - throw new AssertionError(); - } - final MethodPair matchedInvocations = matchReturnTypes(binder.bind(invocation), - nextComponent.getGuardedInvocation().getInvocation()); - return nextComponent.compose(matchedInvocations.guardWithTest(binder.bindTest(checkGuard)), gi.getGuard(), - gic.getValidatorClass(), gic.getValidationType()); - } - - private static GuardedInvocationComponent createInternalFilteredGuardedInvocationComponent( - final MethodHandle invocation, final LinkerServices linkerServices) { - return new GuardedInvocationComponent(linkerServices.filterInternalObjects(invocation)); - } - - private static GuardedInvocationComponent createInternalFilteredGuardedInvocationComponent( - final MethodHandle invocation, final MethodHandle guard, final Class<?> validatorClass, - final ValidationType validationType, final LinkerServices linkerServices) { - return new GuardedInvocationComponent(linkerServices.filterInternalObjects(invocation), guard, - validatorClass, validationType); - } - - private static String getFixedKey(final CallSiteDescriptor callSiteDescriptor) { - return callSiteDescriptor.getNameTokenCount() == 2 ? null : callSiteDescriptor.getNameToken( - CallSiteDescriptor.NAME_OPERAND); - } - - private static Object convertKeyToInteger(final String fixedKey, final LinkerServices linkerServices) throws Exception { - try { - if(linkerServices.canConvert(String.class, Number.class)) { - try { - final Object val = linkerServices.getTypeConverter(String.class, Number.class).invoke(fixedKey); - if(!(val instanceof Number)) { - return null; // not a number - } - final Number n = (Number)val; - if(n instanceof Integer) { - return n; - } - final int intIndex = n.intValue(); - final double doubleValue = n.doubleValue(); - if(intIndex != doubleValue && !Double.isInfinite(doubleValue)) { // let infinites trigger IOOBE - return null; // not an exact integer - } - return Integer.valueOf(intIndex); - } catch(Exception|Error e) { - throw e; - } catch(final Throwable t) { - throw new RuntimeException(t); - } - } - return Integer.valueOf(fixedKey); - } catch(final NumberFormatException e) { - // key is not a number - return null; - } - } - - private static MethodHandle convertArgToInt(final MethodHandle mh, final LinkerServices ls, final CallSiteDescriptor desc) { - final Class<?> sourceType = desc.getMethodType().parameterType(1); - if(TypeUtilities.isMethodInvocationConvertible(sourceType, Number.class)) { - return mh; - } else if(ls.canConvert(sourceType, Number.class)) { - final MethodHandle converter = ls.getTypeConverter(sourceType, Number.class); - return MethodHandles.filterArguments(mh, 1, converter.asType(converter.type().changeReturnType( - mh.type().parameterType(1)))); - } - return mh; - } - - /** - * Contains methods to adapt an item getter/setter method handle to the requested type, optionally binding it to a - * fixed key first. - * @author Attila Szegedi - * @version $Id: $ - */ - private static class Binder { - private final LinkerServices linkerServices; - private final MethodType methodType; - private final Object fixedKey; - - Binder(final LinkerServices linkerServices, final MethodType methodType, final Object fixedKey) { - this.linkerServices = linkerServices; - this.methodType = fixedKey == null ? methodType : methodType.insertParameterTypes(1, fixedKey.getClass()); - this.fixedKey = fixedKey; - } - - /*private*/ MethodHandle bind(final MethodHandle handle) { - return bindToFixedKey(linkerServices.asTypeLosslessReturn(handle, methodType)); - } - - /*private*/ MethodHandle bindTest(final MethodHandle handle) { - return bindToFixedKey(Guards.asType(handle, methodType)); - } - - private MethodHandle bindToFixedKey(final MethodHandle handle) { - return fixedKey == null ? handle : MethodHandles.insertArguments(handle, 1, fixedKey); - } - } - - private static MethodHandle RANGE_CHECK_ARRAY = findRangeCheck(Object.class); - private static MethodHandle RANGE_CHECK_LIST = findRangeCheck(List.class); - private static MethodHandle CONTAINS_MAP = Lookup.PUBLIC.findVirtual(Map.class, "containsKey", - MethodType.methodType(boolean.class, Object.class)); - - private static MethodHandle findRangeCheck(final Class<?> collectionType) { - return Lookup.findOwnStatic(MethodHandles.lookup(), "rangeCheck", boolean.class, collectionType, Object.class); - } - - @SuppressWarnings("unused") - private static final boolean rangeCheck(final Object array, final Object index) { - if(!(index instanceof Number)) { - return false; - } - final Number n = (Number)index; - final int intIndex = n.intValue(); - final double doubleValue = n.doubleValue(); - if(intIndex != doubleValue && !Double.isInfinite(doubleValue)) { // let infinite trigger IOOBE - return false; - } - if(0 <= intIndex && intIndex < Array.getLength(array)) { - return true; - } - throw new ArrayIndexOutOfBoundsException("Array index out of range: " + n); - } - - @SuppressWarnings("unused") - private static final boolean rangeCheck(final List<?> list, final Object index) { - if(!(index instanceof Number)) { - return false; - } - final Number n = (Number)index; - final int intIndex = n.intValue(); - final double doubleValue = n.doubleValue(); - if(intIndex != doubleValue && !Double.isInfinite(doubleValue)) { // let infinite trigger IOOBE - return false; - } - if(0 <= intIndex && intIndex < list.size()) { - return true; - } - throw new IndexOutOfBoundsException("Index: " + n + ", Size: " + list.size()); - } - - private static MethodHandle SET_LIST_ELEMENT = Lookup.PUBLIC.findVirtual(List.class, "set", - MethodType.methodType(Object.class, int.class, Object.class)); - - private static MethodHandle PUT_MAP_ELEMENT = Lookup.PUBLIC.findVirtual(Map.class, "put", - MethodType.methodType(Object.class, Object.class, Object.class)); - - private GuardedInvocationComponent getElementSetter(final CallSiteDescriptor callSiteDescriptor, - final LinkerServices linkerServices, final List<String> operations) throws Exception { - final MethodType callSiteType = callSiteDescriptor.getMethodType(); - final Class<?> declaredType = callSiteType.parameterType(0); - - final GuardedInvocationComponent gic; - // If declared type of receiver at the call site is already an array, a list or map, bind without guard. Thing - // is, it'd be quite stupid of a call site creator to go though invokedynamic when it knows in advance they're - // dealing with an array, or a list or map, but hey... - // Note that for arrays and lists, using LinkerServices.asType() will ensure that any language specific linkers - // in use will get a chance to perform any (if there's any) implicit conversion to integer for the indices. - final CollectionType collectionType; - if(declaredType.isArray()) { - gic = createInternalFilteredGuardedInvocationComponent(MethodHandles.arrayElementSetter(declaredType), linkerServices); - collectionType = CollectionType.ARRAY; - } else if(List.class.isAssignableFrom(declaredType)) { - gic = createInternalFilteredGuardedInvocationComponent(SET_LIST_ELEMENT, linkerServices); - collectionType = CollectionType.LIST; - } else if(Map.class.isAssignableFrom(declaredType)) { - gic = createInternalFilteredGuardedInvocationComponent(PUT_MAP_ELEMENT, linkerServices); - collectionType = CollectionType.MAP; - } else if(clazz.isArray()) { - gic = getClassGuardedInvocationComponent(linkerServices.filterInternalObjects( - MethodHandles.arrayElementSetter(clazz)), callSiteType); - collectionType = CollectionType.ARRAY; - } else if(List.class.isAssignableFrom(clazz)) { - gic = createInternalFilteredGuardedInvocationComponent(SET_LIST_ELEMENT, Guards.asType(LIST_GUARD, callSiteType), List.class, ValidationType.INSTANCE_OF, - linkerServices); - collectionType = CollectionType.LIST; - } else if(Map.class.isAssignableFrom(clazz)) { - gic = createInternalFilteredGuardedInvocationComponent(PUT_MAP_ELEMENT, Guards.asType(MAP_GUARD, callSiteType), - Map.class, ValidationType.INSTANCE_OF, linkerServices); - collectionType = CollectionType.MAP; - } else { - // Can't set elements for objects that are neither arrays, nor list, nor maps. - gic = null; - collectionType = null; - } - - // In contrast to, say, getElementGetter, we only compute the nextComponent if the target object is not a map, - // as maps will always succeed in setting the element and will never need to fall back to the next component - // operation. - final GuardedInvocationComponent nextComponent = collectionType == CollectionType.MAP ? null : getGuardedInvocationComponent( - callSiteDescriptor, linkerServices, operations); - if(gic == null) { - return nextComponent; - } - - // We can have "dyn:setElem:foo", especially in composites, i.e. "dyn:setElem|setProp:foo" - final String fixedKey = getFixedKey(callSiteDescriptor); - // Convert the key to a number if we're working with a list or array - final Object typedFixedKey; - if(collectionType != CollectionType.MAP && fixedKey != null) { - typedFixedKey = convertKeyToInteger(fixedKey, linkerServices); - if(typedFixedKey == null) { - // key is not numeric, it can never succeed - return nextComponent; - } - } else { - typedFixedKey = fixedKey; - } - - final GuardedInvocation gi = gic.getGuardedInvocation(); - final Binder binder = new Binder(linkerServices, callSiteType, typedFixedKey); - final MethodHandle invocation = gi.getInvocation(); - - if(nextComponent == null) { - return gic.replaceInvocation(binder.bind(invocation)); - } - - assert collectionType == CollectionType.LIST || collectionType == CollectionType.ARRAY; - final MethodHandle checkGuard = convertArgToInt(collectionType == CollectionType.LIST ? RANGE_CHECK_LIST : - RANGE_CHECK_ARRAY, linkerServices, callSiteDescriptor); - final MethodPair matchedInvocations = matchReturnTypes(binder.bind(invocation), - nextComponent.getGuardedInvocation().getInvocation()); - return nextComponent.compose(matchedInvocations.guardWithTest(binder.bindTest(checkGuard)), gi.getGuard(), - gic.getValidatorClass(), gic.getValidationType()); - } - - private static MethodHandle GET_ARRAY_LENGTH = Lookup.PUBLIC.findStatic(Array.class, "getLength", - MethodType.methodType(int.class, Object.class)); - - private static MethodHandle GET_COLLECTION_LENGTH = Lookup.PUBLIC.findVirtual(Collection.class, "size", - MethodType.methodType(int.class)); - - private static MethodHandle GET_MAP_LENGTH = Lookup.PUBLIC.findVirtual(Map.class, "size", - MethodType.methodType(int.class)); - - private static MethodHandle COLLECTION_GUARD = Guards.getInstanceOfGuard(Collection.class); - - private GuardedInvocationComponent getLengthGetter(final CallSiteDescriptor callSiteDescriptor) { - assertParameterCount(callSiteDescriptor, 1); - final MethodType callSiteType = callSiteDescriptor.getMethodType(); - final Class<?> declaredType = callSiteType.parameterType(0); - // If declared type of receiver at the call site is already an array, collection, or map, bind without guard. - // Thing is, it'd be quite stupid of a call site creator to go though invokedynamic when it knows in advance - // they're dealing with an array, collection, or map, but hey... - if(declaredType.isArray()) { - return new GuardedInvocationComponent(GET_ARRAY_LENGTH.asType(callSiteType)); - } else if(Collection.class.isAssignableFrom(declaredType)) { - return new GuardedInvocationComponent(GET_COLLECTION_LENGTH.asType(callSiteType)); - } else if(Map.class.isAssignableFrom(declaredType)) { - return new GuardedInvocationComponent(GET_MAP_LENGTH.asType(callSiteType)); - } - - // Otherwise, create a binding based on the actual type of the argument with an appropriate guard. - if(clazz.isArray()) { - return new GuardedInvocationComponent(GET_ARRAY_LENGTH.asType(callSiteType), Guards.isArray(0, - callSiteType), ValidationType.IS_ARRAY); - } if(Collection.class.isAssignableFrom(clazz)) { - return new GuardedInvocationComponent(GET_COLLECTION_LENGTH.asType(callSiteType), Guards.asType( - COLLECTION_GUARD, callSiteType), Collection.class, ValidationType.INSTANCE_OF); - } if(Map.class.isAssignableFrom(clazz)) { - return new GuardedInvocationComponent(GET_MAP_LENGTH.asType(callSiteType), Guards.asType(MAP_GUARD, - callSiteType), Map.class, ValidationType.INSTANCE_OF); - } - // Can't retrieve length for objects that are neither arrays, nor collections, nor maps. - return null; - } - - 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."); - } - } -} |