702 lines
31 KiB
Java
702 lines
31 KiB
Java
/*
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* Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import test.java.lang.invoke.lib.Helper;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodType;
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import java.lang.reflect.Array;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* Enumeration containing information about methods from
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* {@code j.l.i.MethodHandles} class that are used for testing lambda forms
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* caching.
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*
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* @author kshefov
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*/
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public enum TestMethods {
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FOLD_ARGUMENTS("foldArguments") {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);
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data.put("modifierMHArgNum", modifierMHArgNum);
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Class<?> combinerReturnType;
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if (realArity == 0) {
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combinerReturnType = void.class;
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} else {
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combinerReturnType = Helper.RNG.nextBoolean() ?
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void.class : mtTarget.parameterType(0);
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}
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data.put("combinerReturnType", combinerReturnType);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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Class<?> combinerReturnType = (Class) data.get("combinerReturnType");
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int modifierMHArgNum = (int) data.get("modifierMHArgNum");
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MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), kind);
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Class<?> rType = mtTarget.returnType();
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int combListStart = (combinerReturnType == void.class) ? 0 : 1;
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if (modifierMHArgNum < combListStart) {
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modifierMHArgNum = combListStart;
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}
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MethodHandle combiner = TestMethods.methodHandleGenerator(combinerReturnType,
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mtTarget.parameterList().subList(combListStart,
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modifierMHArgNum), kind);
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return MethodHandles.foldArguments(target, combiner);
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}
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},
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DROP_ARGUMENTS("dropArguments") {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int dropArgsPos = Helper.RNG.nextInt(realArity + 1);
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data.put("dropArgsPos", dropArgsPos);
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MethodType mtDropArgs = TestMethods.randomMethodTypeGenerator(
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Helper.RNG.nextInt(super.maxArity - realArity));
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data.put("mtDropArgs", mtDropArgs);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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MethodType mtDropArgs = (MethodType) data.get("mtDropArgs");
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int dropArgsPos = (int) data.get("dropArgsPos");
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MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), kind);
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int mtTgtSlotsCount = TestMethods.argSlotsCount(mtTarget);
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int mtDASlotsCount = TestMethods.argSlotsCount(mtDropArgs);
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List<Class<?>> fakeParList;
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if (mtTgtSlotsCount + mtDASlotsCount > super.maxArity - 1) {
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fakeParList = TestMethods.reduceArgListToSlotsCount(mtDropArgs.parameterList(),
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super.maxArity - mtTgtSlotsCount - 1);
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} else {
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fakeParList = mtDropArgs.parameterList();
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}
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return MethodHandles.dropArguments(target, dropArgsPos, fakeParList);
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}
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},
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EXPLICIT_CAST_ARGUMENTS("explicitCastArguments", Helper.MAX_ARITY / 2) {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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MethodType mtExcplCastArgs = TestMethods.randomMethodTypeGenerator(realArity);
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if (mtTarget.returnType() == void.class) {
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mtExcplCastArgs = MethodType.methodType(void.class,
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mtExcplCastArgs.parameterArray());
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}
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if (mtExcplCastArgs.returnType() == void.class) {
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mtExcplCastArgs = MethodType.methodType(mtTarget.returnType(),
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mtExcplCastArgs.parameterArray());
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}
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data.put("mtExcplCastArgs", mtExcplCastArgs);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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MethodType mtExcplCastArgs = (MethodType) data.get("mtExcplCastArgs");
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MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), kind);
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return MethodHandles.explicitCastArguments(target, mtExcplCastArgs);
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}
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},
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FILTER_ARGUMENTS("filterArguments", Helper.MAX_ARITY / 2) {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int filterArgsPos = Helper.RNG.nextInt(realArity + 1);
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data.put("filterArgsPos", filterArgsPos);
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int filtersArgsArrayLength = Helper.RNG.nextInt(realArity + 1 - filterArgsPos);
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data.put("filtersArgsArrayLength", filtersArgsArrayLength);
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MethodType mtFilter = TestMethods.randomMethodTypeGenerator(filtersArgsArrayLength);
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data.put("mtFilter", mtFilter);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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MethodType mtFilter = (MethodType) data.get("mtFilter");
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int filterArgsPos = (int) data.get("filterArgsPos");
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int filtersArgsArrayLength = (int) data.get("filtersArgsArrayLength");
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MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), kind);
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MethodHandle[] filters = new MethodHandle[filtersArgsArrayLength];
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for (int i = 0; i < filtersArgsArrayLength; i++) {
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filters[i] = TestMethods.filterGenerator(mtFilter.parameterType(i),
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mtTarget.parameterType(filterArgsPos + i), kind);
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}
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return MethodHandles.filterArguments(target, filterArgsPos, filters);
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}
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},
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FILTER_RETURN_VALUE("filterReturnValue") {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int filterArgsPos = Helper.RNG.nextInt(realArity + 1);
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int filtersArgsArrayLength = Helper.RNG.nextInt(realArity + 1 - filterArgsPos);
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MethodType mtFilter = TestMethods.randomMethodTypeGenerator(filtersArgsArrayLength);
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data.put("mtFilter", mtFilter);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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MethodType mtFilter = (MethodType) data.get("mtFilter");
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MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), kind);
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MethodHandle filter = TestMethods.filterGenerator(mtTarget.returnType(),
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mtFilter.returnType(), kind);
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return MethodHandles.filterReturnValue(target, filter);
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}
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},
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INSERT_ARGUMENTS("insertArguments", Helper.MAX_ARITY - 3) {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int insertArgsPos = Helper.RNG.nextInt(realArity + 1);
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data.put("insertArgsPos", insertArgsPos);
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int insertArgsArrayLength = Helper.RNG.nextInt(realArity + 1 - insertArgsPos);
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MethodType mtInsertArgs = MethodType.methodType(void.class, mtTarget.parameterList()
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.subList(insertArgsPos, insertArgsPos + insertArgsArrayLength));
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data.put("mtInsertArgs", mtInsertArgs);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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MethodType mtInsertArgs = (MethodType) data.get("mtInsertArgs");
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int insertArgsPos = (int) data.get("insertArgsPos");
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MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), kind);
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Object[] insertList = Helper.randomArgs(mtInsertArgs.parameterList());
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return MethodHandles.insertArguments(target, insertArgsPos, insertList);
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}
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},
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PERMUTE_ARGUMENTS("permuteArguments", Helper.MAX_ARITY / 2) {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int[] permuteArgsReorderArray = new int[realArity];
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int mtPermuteArgsNum = Helper.RNG.nextInt(Helper.MAX_ARITY);
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mtPermuteArgsNum = mtPermuteArgsNum == 0 ? 1 : mtPermuteArgsNum;
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MethodType mtPermuteArgs = TestMethods.randomMethodTypeGenerator(mtPermuteArgsNum);
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mtTarget = mtTarget.changeReturnType(mtPermuteArgs.returnType());
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for (int i = 0; i < realArity; i++) {
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int mtPermuteArgsParNum = Helper.RNG.nextInt(mtPermuteArgs.parameterCount());
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permuteArgsReorderArray[i] = mtPermuteArgsParNum;
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mtTarget = mtTarget.changeParameterType(
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i, mtPermuteArgs.parameterType(mtPermuteArgsParNum));
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}
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data.put("mtTarget", mtTarget);
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data.put("permuteArgsReorderArray", permuteArgsReorderArray);
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data.put("mtPermuteArgs", mtPermuteArgs);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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MethodType mtPermuteArgs = (MethodType) data.get("mtPermuteArgs");
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int[] permuteArgsReorderArray = (int[]) data.get("permuteArgsReorderArray");
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MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), kind);
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return MethodHandles.permuteArguments(target, mtPermuteArgs, permuteArgsReorderArray);
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}
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},
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THROW_EXCEPTION("throwException") {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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Class<?> rType = mtTarget.returnType();
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return MethodHandles.throwException(rType, Exception.class
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);
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}
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},
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GUARD_WITH_TEST("guardWithTest") {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);
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data.put("modifierMHArgNum", modifierMHArgNum);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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int modifierMHArgNum = (int) data.get("modifierMHArgNum");
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TestMethods.Kind targetKind;
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TestMethods.Kind fallbackKind;
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if (kind.equals(TestMethods.Kind.ONE)) {
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targetKind = TestMethods.Kind.ONE;
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fallbackKind = TestMethods.Kind.TWO;
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} else {
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targetKind = TestMethods.Kind.TWO;
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fallbackKind = TestMethods.Kind.ONE;
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}
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MethodHandle target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), targetKind);
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MethodHandle fallback = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), fallbackKind);
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MethodHandle test = TestMethods.methodHandleGenerator(boolean.class,
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mtTarget.parameterList().subList(0, modifierMHArgNum), kind);
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return MethodHandles.guardWithTest(test, target, fallback);
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}
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},
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CATCH_EXCEPTION("catchException") {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);
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data.put("modifierMHArgNum", modifierMHArgNum);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
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throws NoSuchMethodException, IllegalAccessException {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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int modifierMHArgNum = (int) data.get("modifierMHArgNum");
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MethodHandle target;
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if (kind.equals(TestMethods.Kind.ONE)) {
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target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), TestMethods.Kind.ONE);
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} else {
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target = TestMethods.methodHandleGenerator(mtTarget.returnType(),
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mtTarget.parameterList(), TestMethods.Kind.EXCEPT);
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}
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List<Class<?>> handlerParamList = new ArrayList<>(mtTarget.parameterCount() + 1);
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handlerParamList.add(Exception.class);
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handlerParamList.addAll(mtTarget.parameterList().subList(0, modifierMHArgNum));
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MethodHandle handler = TestMethods.methodHandleGenerator(
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mtTarget.returnType(), handlerParamList, TestMethods.Kind.TWO);
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return MethodHandles.catchException(target, Exception.class, handler);
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}
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},
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INVOKER("invoker", Helper.MAX_ARITY - 1) {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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return MethodHandles.invoker(mtTarget);
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}
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},
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EXACT_INVOKER("exactInvoker", Helper.MAX_ARITY - 1) {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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return MethodHandles.exactInvoker(mtTarget);
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}
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},
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SPREAD_INVOKER("spreadInvoker", Helper.MAX_ARITY - 1) {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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int desiredArity = Helper.RNG.nextInt(super.maxArity);
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MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
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data.put("mtTarget", mtTarget);
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// Arity after reducing because of long and double take 2 slots.
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int realArity = mtTarget.parameterCount();
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int modifierMHArgNum = Helper.RNG.nextInt(realArity + 1);
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data.put("modifierMHArgNum", modifierMHArgNum);
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return data;
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}
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@Override
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protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
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MethodType mtTarget = (MethodType) data.get("mtTarget");
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int modifierMHArgNum = (int) data.get("modifierMHArgNum");
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return MethodHandles.spreadInvoker(mtTarget, modifierMHArgNum);
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}
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},
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ARRAY_ELEMENT_GETTER("arrayElementGetter") {
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@Override
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public Map<String, Object> getTestCaseData() {
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Map<String, Object> data = new HashMap<>();
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|
int desiredArity = Helper.RNG.nextInt(super.maxArity);
|
|
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
|
|
data.put("mtTarget", mtTarget);
|
|
return data;
|
|
}
|
|
|
|
@Override
|
|
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
|
|
MethodType mtTarget = (MethodType) data.get("mtTarget");
|
|
Class<?> rType = mtTarget.returnType();
|
|
if (rType == void.class) {
|
|
rType = Object.class;
|
|
}
|
|
return MethodHandles.arrayElementGetter(Array.newInstance(rType, 2).getClass());
|
|
}
|
|
},
|
|
ARRAY_ELEMENT_SETTER("arrayElementSetter") {
|
|
@Override
|
|
public Map<String, Object> getTestCaseData() {
|
|
Map<String, Object> data = new HashMap<>();
|
|
int desiredArity = Helper.RNG.nextInt(super.maxArity);
|
|
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
|
|
data.put("mtTarget", mtTarget);
|
|
return data;
|
|
}
|
|
|
|
@Override
|
|
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
|
|
MethodType mtTarget = (MethodType) data.get("mtTarget");
|
|
Class<?> rType = mtTarget.returnType();
|
|
if (rType == void.class) {
|
|
rType = Object.class;
|
|
}
|
|
return MethodHandles.arrayElementSetter(Array.newInstance(rType, 2).getClass());
|
|
}
|
|
},
|
|
CONSTANT("constant") {
|
|
@Override
|
|
public Map<String, Object> getTestCaseData() {
|
|
Map<String, Object> data = new HashMap<>();
|
|
int desiredArity = Helper.RNG.nextInt(super.maxArity);
|
|
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
|
|
data.put("mtTarget", mtTarget);
|
|
return data;
|
|
}
|
|
|
|
@Override
|
|
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
|
|
MethodType mtTarget = (MethodType) data.get("mtTarget");
|
|
Class<?> rType = mtTarget.returnType();
|
|
if (rType == void.class) {
|
|
rType = Object.class;
|
|
}
|
|
if (rType.equals(boolean.class)) {
|
|
// There should be the same return values because for default values there are special "zero" forms
|
|
return MethodHandles.constant(rType, true);
|
|
} else {
|
|
return MethodHandles.constant(rType, kind.getValue(rType));
|
|
}
|
|
}
|
|
},
|
|
IDENTITY("identity") {
|
|
@Override
|
|
public Map<String, Object> getTestCaseData() {
|
|
Map<String, Object> data = new HashMap<>();
|
|
int desiredArity = Helper.RNG.nextInt(super.maxArity);
|
|
MethodType mtTarget = TestMethods.randomMethodTypeGenerator(desiredArity);
|
|
data.put("mtTarget", mtTarget);
|
|
return data;
|
|
}
|
|
|
|
@Override
|
|
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind) {
|
|
MethodType mtTarget = (MethodType) data.get("mtTarget");
|
|
Class<?> rType = mtTarget.returnType();
|
|
if (rType == void.class) {
|
|
rType = Object.class;
|
|
}
|
|
return MethodHandles.identity(rType);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Test method's name.
|
|
*/
|
|
public final String name;
|
|
|
|
private final int maxArity;
|
|
|
|
private TestMethods(String name, int maxArity) {
|
|
this.name = name;
|
|
this.maxArity = maxArity;
|
|
}
|
|
|
|
private TestMethods(String name) {
|
|
this(name, Helper.MAX_ARITY);
|
|
}
|
|
|
|
protected MethodHandle getMH(Map<String, Object> data, TestMethods.Kind kind)
|
|
throws NoSuchMethodException, IllegalAccessException {
|
|
throw new UnsupportedOperationException(
|
|
"TESTBUG: getMH method is not implemented for test method " + this);
|
|
}
|
|
|
|
/**
|
|
* Creates an adapter method handle depending on a test method from
|
|
* MethodHandles class. Adapter is what is returned by the test method. This
|
|
* method is able to create two kinds of adapters, their type will be the
|
|
* same, but return values are different.
|
|
*
|
|
* @param data a Map containing data to create a method handle, can be
|
|
* obtained by {@link #getTestCaseData} method
|
|
* @param kind defines whether adapter ONE or adapter TWO will be
|
|
* initialized. Should be equal to TestMethods.Kind.ONE or
|
|
* TestMethods.Kind.TWO
|
|
* @return Method handle adapter that behaves according to
|
|
* TestMethods.Kind.ONE or TestMethods.Kind.TWO
|
|
* @throws java.lang.NoSuchMethodException
|
|
* @throws java.lang.IllegalAccessException
|
|
*/
|
|
public MethodHandle getTestCaseMH(Map<String, Object> data, TestMethods.Kind kind)
|
|
throws NoSuchMethodException, IllegalAccessException {
|
|
if (data == null) {
|
|
throw new Error(String.format("TESTBUG: Data for test method %s is not prepared",
|
|
this.name));
|
|
}
|
|
if (!kind.equals(TestMethods.Kind.ONE) && !kind.equals(TestMethods.Kind.TWO)) {
|
|
throw new IllegalArgumentException("TESTBUG: Wrong \"kind\" (" + kind
|
|
+ ") arg to getTestCaseMH function."
|
|
+ " Should be Kind.ONE or Kind.TWO");
|
|
}
|
|
return getMH(data, kind);
|
|
}
|
|
|
|
/**
|
|
* Returns a data Map needed for {@link #getTestCaseMH} method.
|
|
*
|
|
* @return data Map needed for {@link #getTestCaseMH} method
|
|
*/
|
|
public Map<String, Object> getTestCaseData() {
|
|
throw new UnsupportedOperationException(
|
|
"TESTBUG: getTestCaseData method is not implemented for test method " + this);
|
|
}
|
|
|
|
/**
|
|
* Enumeration used in methodHandleGenerator to define whether a MH returned
|
|
* by this method returns "2" in different type representations, "4", or
|
|
* throw an Exception.
|
|
*/
|
|
public static enum Kind {
|
|
|
|
ONE(2),
|
|
TWO(4),
|
|
EXCEPT(0);
|
|
|
|
private final int value;
|
|
|
|
private Object getValue(Class<?> cl) {
|
|
return Helper.castToWrapper(value, cl);
|
|
}
|
|
|
|
private MethodHandle getBasicMH(Class<?> rType)
|
|
throws NoSuchMethodException, IllegalAccessException {
|
|
MethodHandle result = null;
|
|
switch (this) {
|
|
case ONE:
|
|
case TWO:
|
|
if (rType.equals(void.class)) {
|
|
result = MethodHandles.lookup().findVirtual(Kind.class,
|
|
"returnVoid", MethodType.methodType(void.class));
|
|
result = MethodHandles.insertArguments(result, 0, this);
|
|
} else {
|
|
result = MethodHandles.constant(rType, getValue(rType));
|
|
}
|
|
break;
|
|
case EXCEPT:
|
|
result = MethodHandles.throwException(rType, Exception.class);
|
|
result = MethodHandles.insertArguments(result, 0, new Exception());
|
|
break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
private void returnVoid() {
|
|
}
|
|
|
|
private Kind(int value) {
|
|
this.value = value;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Routine used to obtain a randomly generated method type.
|
|
*
|
|
* @param arity Arity of returned method type.
|
|
* @return MethodType generated randomly.
|
|
*/
|
|
private static MethodType randomMethodTypeGenerator(int arity) {
|
|
return Helper.randomMethodTypeGenerator(arity);
|
|
}
|
|
|
|
/**
|
|
* Routine used to obtain a method handles of a given type an kind (return
|
|
* value).
|
|
*
|
|
* @param returnType Type of MH return value.
|
|
* @param argTypes Types of MH args.
|
|
* @param kind Defines whether the obtained MH returns "1" or "2".
|
|
* @return Method handle of the given type.
|
|
* @throws NoSuchMethodException
|
|
* @throws IllegalAccessException
|
|
*/
|
|
private static MethodHandle methodHandleGenerator(Class<?> returnType,
|
|
List<Class<?>> argTypes, TestMethods.Kind kind)
|
|
throws NoSuchMethodException, IllegalAccessException {
|
|
MethodHandle result;
|
|
result = kind.getBasicMH(returnType);
|
|
return Helper.addTrailingArgs(result, argTypes.size(), argTypes);
|
|
}
|
|
|
|
/**
|
|
* Routine that generates filter method handles to test
|
|
* MethodHandles.filterArguments method.
|
|
*
|
|
* @param inputType Filter's argument type.
|
|
* @param returnType Filter's return type.
|
|
* @param kind Filter's return value definer.
|
|
* @return A filter method handle, that takes one argument.
|
|
* @throws NoSuchMethodException
|
|
* @throws IllegalAccessException
|
|
*/
|
|
private static MethodHandle filterGenerator(Class<?> inputType, Class<?> returnType,
|
|
TestMethods.Kind kind) throws NoSuchMethodException, IllegalAccessException {
|
|
MethodHandle tmpMH = kind.getBasicMH(returnType);
|
|
if (inputType.equals(void.class)) {
|
|
return tmpMH;
|
|
}
|
|
ArrayList<Class<?>> inputTypeList = new ArrayList<>(1);
|
|
inputTypeList.add(inputType);
|
|
return Helper.addTrailingArgs(tmpMH, 1, inputTypeList);
|
|
}
|
|
|
|
private static int argSlotsCount(MethodType mt) {
|
|
int result = 0;
|
|
for (Class cl : mt.parameterArray()) {
|
|
if (cl.equals(long.class) || cl.equals(double.class)) {
|
|
result += 2;
|
|
} else {
|
|
result++;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
private static List<Class<?>> reduceArgListToSlotsCount(List<Class<?>> list,
|
|
int desiredSlotCount) {
|
|
List<Class<?>> result = new ArrayList<>(desiredSlotCount);
|
|
int count = 0;
|
|
for (Class<?> cl : list) {
|
|
if (count >= desiredSlotCount) {
|
|
break;
|
|
}
|
|
if (cl.equals(long.class) || cl.equals(double.class)) {
|
|
count += 2;
|
|
} else {
|
|
count++;
|
|
}
|
|
result.add(cl);
|
|
}
|
|
return result;
|
|
}
|
|
}
|