1026 lines
42 KiB
Java
1026 lines
42 KiB
Java
/*
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* Copyright (c) 2009, 2019, 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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package test.java.lang.invoke;
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import org.junit.*;
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import test.java.lang.invoke.remote.RemoteExample;
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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.MethodHandles.Lookup;
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import java.lang.invoke.MethodType;
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import java.lang.reflect.Array;
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import java.lang.reflect.Field;
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import java.lang.reflect.Modifier;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.List;
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import java.util.stream.Stream;
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import static org.junit.Assert.*;
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/**
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*
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* @author jrose
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*/
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public abstract class MethodHandlesTest {
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static final Class<?> THIS_CLASS = MethodHandlesTest.class;
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// How much output?
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static int verbosity = 0;
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static {
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String vstr = System.getProperty(THIS_CLASS.getSimpleName()+".verbosity");
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if (vstr == null)
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vstr = System.getProperty(THIS_CLASS.getName()+".verbosity");
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if (vstr != null) verbosity = Integer.parseInt(vstr);
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}
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// Set this true during development if you want to fast-forward to
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// a particular new, non-working test. Tests which are known to
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// work (or have recently worked) test this flag and return on true.
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static final boolean CAN_SKIP_WORKING;
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static {
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String vstr = System.getProperty(THIS_CLASS.getSimpleName()+".CAN_SKIP_WORKING");
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if (vstr == null)
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vstr = System.getProperty(THIS_CLASS.getName()+".CAN_SKIP_WORKING");
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CAN_SKIP_WORKING = Boolean.parseBoolean(vstr);
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}
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// Set 'true' to do about 15x fewer tests, especially those redundant with RicochetTest.
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// This might be useful with -Xcomp stress tests that compile all method handles.
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static boolean CAN_TEST_LIGHTLY = Boolean.getBoolean(THIS_CLASS.getName()+".CAN_TEST_LIGHTLY");
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static final int MAX_ARG_INCREASE = 3;
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String testName;
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static int allPosTests, allNegTests;
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int posTests, negTests;
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@After
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public void printCounts() {
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if (verbosity >= 2 && (posTests | negTests) != 0) {
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System.out.println();
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if (posTests != 0) System.out.println("=== "+testName+": "+posTests+" positive test cases run");
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if (negTests != 0) System.out.println("=== "+testName+": "+negTests+" negative test cases run");
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allPosTests += posTests;
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allNegTests += negTests;
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posTests = negTests = 0;
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}
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}
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void countTest(boolean positive) {
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if (positive) ++posTests;
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else ++negTests;
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}
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void countTest() { countTest(true); }
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void startTest(String name) {
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if (testName != null) printCounts();
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if (verbosity >= 1)
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System.out.println(name);
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posTests = negTests = 0;
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testName = name;
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}
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@BeforeClass
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public static void setUpClass() throws Exception {
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calledLog.clear();
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calledLog.add(null);
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nextArgVal = INITIAL_ARG_VAL;
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}
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@AfterClass
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public static void tearDownClass() throws Exception {
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int posTests = allPosTests, negTests = allNegTests;
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if (verbosity >= 0 && (posTests | negTests) != 0) {
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System.out.println();
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if (posTests != 0) System.out.println("=== "+posTests+" total positive test cases");
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if (negTests != 0) System.out.println("=== "+negTests+" total negative test cases");
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}
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}
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static List<Object> calledLog = new ArrayList<>();
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static Object logEntry(String name, Object... args) {
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return Arrays.asList(name, Arrays.asList(args));
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}
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public static Object called(String name, Object... args) {
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Object entry = logEntry(name, args);
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calledLog.add(entry);
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return entry;
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}
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static void assertCalled(String name, Object... args) {
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Object expected = logEntry(name, args);
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Object actual = calledLog.get(calledLog.size() - 1);
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if (expected.equals(actual) && verbosity < 9) return;
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System.out.println("assertCalled "+name+":");
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System.out.println("expected: "+deepToString(expected));
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System.out.println("actual: "+actual);
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System.out.println("ex. types: "+getClasses(expected));
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System.out.println("act. types: "+getClasses(actual));
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assertEquals("previous method call", expected, actual);
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}
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static void printCalled(MethodHandle target, String name, Object... args) {
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if (verbosity >= 3)
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System.out.println("calling MH="+target+" to "+name+deepToString(args));
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}
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static String deepToString(Object x) {
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if (x == null) return "null";
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if (x instanceof Collection)
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x = ((Collection)x).toArray();
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if (x instanceof Object[]) {
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Object[] ax = (Object[]) x;
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ax = Arrays.copyOf(ax, ax.length, Object[].class);
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for (int i = 0; i < ax.length; i++)
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ax[i] = deepToString(ax[i]);
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x = Arrays.deepToString(ax);
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}
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if (x.getClass().isArray())
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try {
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x = Arrays.class.getMethod("toString", x.getClass()).invoke(null, x);
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} catch (ReflectiveOperationException ex) { throw new Error(ex); }
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assert(!(x instanceof Object[]));
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return x.toString();
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}
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static Object castToWrapper(Object value, Class<?> dst) {
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Object wrap = null;
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if (value instanceof Number)
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wrap = castToWrapperOrNull(((Number)value).longValue(), dst);
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if (value instanceof Character)
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wrap = castToWrapperOrNull((char)(Character)value, dst);
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if (wrap != null) return wrap;
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return dst.cast(value);
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}
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@SuppressWarnings("cast") // primitive cast to (long) is part of the pattern
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static Object castToWrapperOrNull(long value, Class<?> dst) {
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if (dst == int.class || dst == Integer.class)
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return (int)(value);
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if (dst == long.class || dst == Long.class)
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return (long)(value);
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if (dst == char.class || dst == Character.class)
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return (char)(value);
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if (dst == short.class || dst == Short.class)
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return (short)(value);
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if (dst == float.class || dst == Float.class)
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return (float)(value);
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if (dst == double.class || dst == Double.class)
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return (double)(value);
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if (dst == byte.class || dst == Byte.class)
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return (byte)(value);
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if (dst == boolean.class || dst == boolean.class)
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return ((value % 29) & 1) == 0;
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return null;
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}
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static final int ONE_MILLION = (1000*1000), // first int value
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TEN_BILLION = (10*1000*1000*1000), // scale factor to reach upper 32 bits
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INITIAL_ARG_VAL = ONE_MILLION << 1; // <<1 makes space for sign bit;
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static long nextArgVal;
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static long nextArg(boolean moreBits) {
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long val = nextArgVal++;
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long sign = -(val & 1); // alternate signs
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val >>= 1;
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if (moreBits)
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// Guarantee some bits in the high word.
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// In any case keep the decimal representation simple-looking,
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// with lots of zeroes, so as not to make the printed decimal
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// strings unnecessarily noisy.
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val += (val % ONE_MILLION) * TEN_BILLION;
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return val ^ sign;
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}
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static int nextArg() {
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// Produce a 32-bit result something like ONE_MILLION+(smallint).
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// Example: 1_000_042.
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return (int) nextArg(false);
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}
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static long nextArg(Class<?> kind) {
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if (kind == long.class || kind == Long.class ||
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kind == double.class || kind == Double.class)
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// produce a 64-bit result something like
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// ((TEN_BILLION+1) * (ONE_MILLION+(smallint)))
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// Example: 10_000_420_001_000_042.
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return nextArg(true);
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return (long) nextArg();
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}
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static Object randomArg(Class<?> param) {
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Object wrap = castToWrapperOrNull(nextArg(param), param);
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if (wrap != null) {
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return wrap;
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}
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//import sun.invoke.util.Wrapper;
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//Wrapper wrap = Wrapper.forBasicType(dst);
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//if (wrap == Wrapper.OBJECT && Wrapper.isWrapperType(dst))
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// wrap = Wrapper.forWrapperType(dst);
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// if (wrap != Wrapper.OBJECT)
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// return wrap.wrap(nextArg++);
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if (param.isInterface()) {
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for (Class<?> c : param.getClasses()) {
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if (param.isAssignableFrom(c) && !c.isInterface())
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{ param = c; break; }
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}
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}
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if (param.isArray()) {
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Class<?> ctype = param.getComponentType();
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Object arg = Array.newInstance(ctype, 2);
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Array.set(arg, 0, randomArg(ctype));
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return arg;
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}
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if (param.isInterface() && param.isAssignableFrom(List.class))
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return Arrays.asList("#"+nextArg());
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if (param.isInterface() || param.isAssignableFrom(String.class))
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return "#"+nextArg();
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else
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try {
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return param.newInstance();
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} catch (InstantiationException | IllegalAccessException ex) {
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}
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return null; // random class not Object, String, Integer, etc.
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}
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static Object[] randomArgs(Class<?>... params) {
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Object[] args = new Object[params.length];
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for (int i = 0; i < args.length; i++)
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args[i] = randomArg(params[i]);
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return args;
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}
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static Object[] randomArgs(int nargs, Class<?> param) {
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Object[] args = new Object[nargs];
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for (int i = 0; i < args.length; i++)
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args[i] = randomArg(param);
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return args;
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}
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static Object[] randomArgs(List<Class<?>> params) {
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return randomArgs(params.toArray(new Class<?>[params.size()]));
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}
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@SafeVarargs @SuppressWarnings("varargs")
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static <T, E extends T> T[] array(Class<T[]> atype, E... a) {
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return Arrays.copyOf(a, a.length, atype);
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}
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@SafeVarargs @SuppressWarnings("varargs")
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static <T> T[] cat(T[] a, T... b) {
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int alen = a.length, blen = b.length;
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if (blen == 0) return a;
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T[] c = Arrays.copyOf(a, alen + blen);
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System.arraycopy(b, 0, c, alen, blen);
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return c;
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}
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static Integer[] boxAll(int... vx) {
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Integer[] res = new Integer[vx.length];
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for (int i = 0; i < res.length; i++) {
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res[i] = vx[i];
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}
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return res;
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}
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static Object getClasses(Object x) {
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if (x == null) return x;
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if (x instanceof String) return x; // keep the name
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if (x instanceof List) {
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// recursively report classes of the list elements
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Object[] xa = ((List)x).toArray();
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for (int i = 0; i < xa.length; i++)
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xa[i] = getClasses(xa[i]);
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return Arrays.asList(xa);
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}
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return x.getClass().getSimpleName();
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}
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/** Return lambda(arg...[arity]) { new Object[]{ arg... } } */
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static MethodHandle varargsList(int arity) {
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return ValueConversions.varargsList(arity);
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}
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/** Return lambda(arg...[arity]) { Arrays.asList(arg...) } */
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static MethodHandle varargsArray(int arity) {
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return ValueConversions.varargsArray(arity);
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}
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static MethodHandle varargsArray(Class<?> arrayType, int arity) {
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return ValueConversions.varargsArray(arrayType, arity);
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}
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/** Variation of varargsList, but with the given rtype. */
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static MethodHandle varargsList(int arity, Class<?> rtype) {
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MethodHandle list = varargsList(arity);
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MethodType listType = list.type().changeReturnType(rtype);
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if (List.class.isAssignableFrom(rtype) || rtype == void.class || rtype == Object.class) {
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// OK
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} else if (rtype.isAssignableFrom(String.class)) {
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if (LIST_TO_STRING == null)
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try {
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LIST_TO_STRING = PRIVATE.findStatic(PRIVATE.lookupClass(), "listToString",
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MethodType.methodType(String.class, List.class));
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} catch (NoSuchMethodException | IllegalAccessException ex) { throw new RuntimeException(ex); }
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list = MethodHandles.filterReturnValue(list, LIST_TO_STRING);
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} else if (rtype.isPrimitive()) {
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if (LIST_TO_INT == null)
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try {
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LIST_TO_INT = PRIVATE.findStatic(PRIVATE.lookupClass(), "listToInt",
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MethodType.methodType(int.class, List.class));
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} catch (NoSuchMethodException | IllegalAccessException ex) { throw new RuntimeException(ex); }
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list = MethodHandles.filterReturnValue(list, LIST_TO_INT);
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list = MethodHandles.explicitCastArguments(list, listType);
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} else {
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throw new RuntimeException("varargsList: "+rtype);
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}
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return list.asType(listType);
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}
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/** Variation of varargsList, but with the given ptypes and rtype. */
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static MethodHandle varargsList(List<Class<?>> ptypes, Class<?> rtype) {
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MethodHandle list = varargsList(ptypes.size(), rtype);
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return list.asType(MethodType.methodType(rtype, ptypes));
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}
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private static MethodHandle LIST_TO_STRING, LIST_TO_INT;
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private static String listToString(List<?> x) { return x.toString(); }
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private static int listToInt(List<?> x) { return x.toString().hashCode(); }
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static MethodHandle changeArgTypes(MethodHandle target, Class<?> argType) {
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return changeArgTypes(target, 0, 999, argType);
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}
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static MethodHandle changeArgTypes(MethodHandle target,
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int beg, int end, Class<?> argType) {
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MethodType targetType = target.type();
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end = Math.min(end, targetType.parameterCount());
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ArrayList<Class<?>> argTypes = new ArrayList<>(targetType.parameterList());
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Collections.fill(argTypes.subList(beg, end), argType);
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MethodType ttype2 = MethodType.methodType(targetType.returnType(), argTypes);
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return target.asType(ttype2);
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}
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static MethodHandle addTrailingArgs(MethodHandle target, int nargs, Class<?> argClass) {
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int targetLen = target.type().parameterCount();
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int extra = (nargs - targetLen);
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if (extra <= 0) return target;
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List<Class<?>> fakeArgs = Collections.<Class<?>>nCopies(extra, argClass);
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return MethodHandles.dropArguments(target, targetLen, fakeArgs);
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}
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// This lookup is good for all members in and under MethodHandlesTest.
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static final Lookup PRIVATE = MethodHandles.lookup();
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// This lookup is good for package-private members but not private ones.
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static final Lookup PACKAGE = PackageSibling.lookup();
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// This lookup is good for public members and protected members of PubExample
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static final Lookup SUBCLASS = RemoteExample.lookup();
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// This lookup is good only for public members in exported packages.
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static final Lookup PUBLIC = MethodHandles.publicLookup();
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// Subject methods...
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static class Example implements IntExample {
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final String name;
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public Example() { name = "Example#"+nextArg(); }
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protected Example(String name) { this.name = name; }
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@SuppressWarnings("LeakingThisInConstructor")
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protected Example(int x) { this(); called("protected <init>", this, x); }
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//Example(Void x) { does not exist; lookup elicts NoSuchMethodException }
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@Override public String toString() { return name; }
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public void v0() { called("v0", this); }
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protected void pro_v0() { called("pro_v0", this); }
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void pkg_v0() { called("pkg_v0", this); }
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private void pri_v0() { called("pri_v0", this); }
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public static void s0() { called("s0"); }
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protected static void pro_s0() { called("pro_s0"); }
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static void pkg_s0() { called("pkg_s0"); }
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private static void pri_s0() { called("pri_s0"); }
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public Object v1(Object x) { return called("v1", this, x); }
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public Object v2(Object x, Object y) { return called("v2", this, x, y); }
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public Object v2(Object x, int y) { return called("v2", this, x, y); }
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public Object v2(int x, Object y) { return called("v2", this, x, y); }
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public Object v2(int x, int y) { return called("v2", this, x, y); }
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public static Object s1(Object x) { return called("s1", x); }
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public static Object s2(int x) { return called("s2", x); }
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public static Object s3(long x) { return called("s3", x); }
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public static Object s4(int x, int y) { return called("s4", x, y); }
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public static Object s5(long x, int y) { return called("s5", x, y); }
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public static Object s6(int x, long y) { return called("s6", x, y); }
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public static Object s7(float x, double y) { return called("s7", x, y); }
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// for testing findConstructor:
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public Example(String x, int y) { this.name = x+y; called("Example.<init>", x, y); }
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public Example(int x, String y) { this.name = x+y; called("Example.<init>", x, y); }
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public Example(int x, int y) { this.name = x+""+y; called("Example.<init>", x, y); }
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public Example(int x, long y) { this.name = x+""+y; called("Example.<init>", x, y); }
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public Example(int x, float y) { this.name = x+""+y; called("Example.<init>", x, y); }
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public Example(int x, double y) { this.name = x+""+y; called("Example.<init>", x, y); }
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public Example(int x, int y, int z) { this.name = x+""+y+""+z; called("Example.<init>", x, y, z); }
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public Example(int x, int y, int z, int a) { this.name = x+""+y+""+z+""+a; called("Example.<init>", x, y, z, a); }
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static final Lookup EXAMPLE = MethodHandles.lookup(); // for testing findSpecial
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}
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|
|
static final Lookup EXAMPLE = Example.EXAMPLE;
|
|
public static class PubExample extends Example {
|
|
public PubExample() { this("PubExample"); }
|
|
protected PubExample(String prefix) { super(prefix+"#"+nextArg()); }
|
|
protected void pro_v0() { called("Pub/pro_v0", this); }
|
|
protected static void pro_s0() { called("Pub/pro_s0"); }
|
|
}
|
|
|
|
static class SubExample extends Example {
|
|
@Override public void v0() { called("Sub/v0", this); }
|
|
@Override void pkg_v0() { called("Sub/pkg_v0", this); }
|
|
@SuppressWarnings("LeakingThisInConstructor")
|
|
private SubExample(int x) { called("<init>", this, x); }
|
|
public SubExample() { super("SubExample#"+nextArg()); }
|
|
}
|
|
|
|
public static interface IntExample {
|
|
public void v0();
|
|
public default void vd() { called("vd", this); }
|
|
public static class Impl implements IntExample {
|
|
public void v0() { called("Int/v0", this); }
|
|
final String name;
|
|
public Impl() { name = "Impl#"+nextArg(); }
|
|
@Override public String toString() { return name; }
|
|
}
|
|
}
|
|
|
|
static interface SubIntExample extends IntExample { }
|
|
|
|
static final Object[][][] ACCESS_CASES = {
|
|
{ { false, PUBLIC }, { false, SUBCLASS }, { false, PACKAGE }, { false, PRIVATE }, { false, EXAMPLE } }, //[0]: all false
|
|
{ { false, PUBLIC }, { false, SUBCLASS }, { false, PACKAGE }, { true, PRIVATE }, { true, EXAMPLE } }, //[1]: only PRIVATE
|
|
{ { false, PUBLIC }, { false, SUBCLASS }, { true, PACKAGE }, { true, PRIVATE }, { true, EXAMPLE } }, //[2]: PUBLIC false
|
|
{ { false, PUBLIC }, { true, SUBCLASS }, { true, PACKAGE }, { true, PRIVATE }, { true, EXAMPLE } }, //[3]: subclass OK
|
|
{ { true, PUBLIC }, { true, SUBCLASS }, { true, PACKAGE }, { true, PRIVATE }, { true, EXAMPLE } }, //[4]: all true
|
|
};
|
|
|
|
static Object[][] accessCases(Class<?> defc, String name, boolean isSpecial) {
|
|
Object[][] cases;
|
|
if (name.contains("pri_") || isSpecial) {
|
|
cases = ACCESS_CASES[1]; // PRIVATE only
|
|
} else if (name.contains("pkg_") || !Modifier.isPublic(defc.getModifiers())) {
|
|
cases = ACCESS_CASES[2]; // not PUBLIC
|
|
} else if (name.contains("pro_")) {
|
|
cases = ACCESS_CASES[3]; // PUBLIC class, protected member
|
|
} else {
|
|
assertTrue(name.indexOf('_') < 0 || name.contains("fin_"));
|
|
boolean pubc = Modifier.isPublic(defc.getModifiers());
|
|
if (pubc)
|
|
cases = ACCESS_CASES[4]; // all access levels
|
|
else
|
|
cases = ACCESS_CASES[2]; // PACKAGE but not PUBLIC
|
|
}
|
|
if (defc != Example.class && cases[cases.length-1][1] == EXAMPLE)
|
|
cases = Arrays.copyOfRange(cases, 0, cases.length-1);
|
|
return cases;
|
|
}
|
|
|
|
static Object[][] accessCases(Class<?> defc, String name) {
|
|
return accessCases(defc, name, false);
|
|
}
|
|
|
|
static Lookup maybeMoveIn(Lookup lookup, Class<?> defc) {
|
|
if (lookup == PUBLIC || lookup == SUBCLASS || lookup == PACKAGE)
|
|
// external views stay external
|
|
return lookup;
|
|
return lookup.in(defc);
|
|
}
|
|
|
|
/** Is findVirtual (etc.) of "<init<" supposed to elicit a NoSuchMethodException? */
|
|
static final boolean INIT_REF_CAUSES_NSME = true;
|
|
|
|
static void assertExceptionClass(Class<? extends Throwable> expected,
|
|
Throwable actual) {
|
|
if (expected.isInstance(actual)) return;
|
|
actual.printStackTrace();
|
|
assertEquals(expected, actual.getClass());
|
|
}
|
|
|
|
static final boolean DEBUG_METHOD_HANDLE_NAMES = Boolean.getBoolean("java.lang.invoke.MethodHandle.DEBUG_NAMES");
|
|
|
|
// rough check of name string
|
|
static void assertNameStringContains(MethodHandle x, String s) {
|
|
if (!DEBUG_METHOD_HANDLE_NAMES) {
|
|
// ignore s
|
|
assertEquals("MethodHandle"+x.type(), x.toString());
|
|
return;
|
|
}
|
|
if (x.toString().contains(s)) return;
|
|
assertEquals(s, x);
|
|
}
|
|
|
|
public static class HasFields {
|
|
boolean iZ = false;
|
|
byte iB = (byte)'B';
|
|
short iS = (short)'S';
|
|
char iC = 'C';
|
|
int iI = 'I';
|
|
long iJ = 'J';
|
|
float iF = 'F';
|
|
double iD = 'D';
|
|
static boolean sZ = true;
|
|
static byte sB = 1+(byte)'B';
|
|
static short sS = 1+(short)'S';
|
|
static char sC = 1+'C';
|
|
static int sI = 1+'I';
|
|
static long sJ = 1+'J';
|
|
static float sF = 1+'F';
|
|
static double sD = 1+'D';
|
|
|
|
// final fields
|
|
final boolean fiZ = false;
|
|
final byte fiB = 2+(byte)'B';
|
|
final short fiS = 2+(short)'S';
|
|
final char fiC = 2+'C';
|
|
final int fiI = 2+'I';
|
|
final long fiJ = 2+'J';
|
|
final float fiF = 2+'F';
|
|
final double fiD = 2+'D';
|
|
final static boolean fsZ = false;
|
|
final static byte fsB = 3+(byte)'B';
|
|
final static short fsS = 3+(short)'S';
|
|
final static char fsC = 3+'C';
|
|
final static int fsI = 3+'I';
|
|
final static long fsJ = 3+'J';
|
|
final static float fsF = 3+'F';
|
|
final static double fsD = 3+'D';
|
|
|
|
Object iL = 'L';
|
|
String iR = "iR";
|
|
static Object sL = 1+'L';
|
|
static String sR = "sR";
|
|
final Object fiL = 2+'L';
|
|
final String fiR = "fiR";
|
|
final static Object fsL = 3+'L';
|
|
final static String fsR = "fsR";
|
|
|
|
static final ArrayList<Object[]> STATIC_FIELD_CASES = new ArrayList<>();
|
|
static final ArrayList<Object[]> INSTANCE_FIELD_CASES = new ArrayList<>();
|
|
static {
|
|
Object types[][] = {
|
|
{'L',Object.class}, {'R',String.class},
|
|
{'I',int.class}, {'J',long.class},
|
|
{'F',float.class}, {'D',double.class},
|
|
{'Z',boolean.class}, {'B',byte.class},
|
|
{'S',short.class}, {'C',char.class},
|
|
};
|
|
HasFields fields = new HasFields();
|
|
for (Object[] t : types) {
|
|
for (int kind = 0; kind <= 1; kind++) {
|
|
boolean isStatic = (kind != 0);
|
|
ArrayList<Object[]> cases = isStatic ? STATIC_FIELD_CASES : INSTANCE_FIELD_CASES;
|
|
char btc = (Character)t[0];
|
|
String fname = (isStatic ? "s" : "i") + btc;
|
|
String finalFname = (isStatic ? "fs" : "fi") + btc;
|
|
Class<?> type = (Class<?>) t[1];
|
|
// non-final field
|
|
Field nonFinalField = getField(fname, type);
|
|
Object value = getValue(fields, nonFinalField);
|
|
if (type == float.class) {
|
|
float v = 'F';
|
|
if (isStatic) v++;
|
|
assertTrue(value.equals(v));
|
|
}
|
|
assertTrue(isStatic == (Modifier.isStatic(nonFinalField.getModifiers())));
|
|
cases.add(new Object[]{ nonFinalField, value });
|
|
|
|
// setAccessible(true) on final field but static final field only has read access
|
|
Field finalField = getField(finalFname, type);
|
|
Object fvalue = getValue(fields, finalField);
|
|
finalField.setAccessible(true);
|
|
assertTrue(isStatic == (Modifier.isStatic(finalField.getModifiers())));
|
|
cases.add(new Object[]{ finalField, fvalue, Error.class});
|
|
}
|
|
}
|
|
INSTANCE_FIELD_CASES.add(new Object[]{ new Object[]{ false, HasFields.class, "bogus_fD", double.class }, Error.class });
|
|
STATIC_FIELD_CASES.add(new Object[]{ new Object[]{ true, HasFields.class, "bogus_sL", Object.class }, Error.class });
|
|
}
|
|
|
|
private static Field getField(String name, Class<?> type) {
|
|
try {
|
|
Field field = HasFields.class.getDeclaredField(name);
|
|
assertTrue(name.equals(field.getName()));
|
|
assertTrue(type.equals(field.getType()));
|
|
return field;
|
|
} catch (NoSuchFieldException | SecurityException ex) {
|
|
throw new InternalError("no field HasFields."+name);
|
|
}
|
|
}
|
|
|
|
private static Object getValue(Object o, Field field) {
|
|
try {
|
|
return field.get(o);
|
|
} catch (IllegalArgumentException | IllegalAccessException ex) {
|
|
throw new InternalError("cannot fetch field HasFields."+field.getName());
|
|
}
|
|
}
|
|
|
|
static Object[][] testCasesFor(int testMode) {
|
|
Stream<Object[]> cases;
|
|
if ((testMode & TEST_UNREFLECT) != 0) {
|
|
cases = Stream.concat(STATIC_FIELD_CASES.stream(), INSTANCE_FIELD_CASES.stream());
|
|
} else if ((testMode & TEST_FIND_STATIC) != 0) {
|
|
cases = STATIC_FIELD_CASES.stream();
|
|
} else if ((testMode & TEST_FIND_FIELD) != 0) {
|
|
cases = INSTANCE_FIELD_CASES.stream();
|
|
} else {
|
|
throw new InternalError("unexpected test mode: " + testMode);
|
|
}
|
|
return cases.map(c -> mapTestCase(testMode, c)).toArray(Object[][]::new);
|
|
|
|
}
|
|
|
|
private static Object[] mapTestCase(int testMode, Object[] c) {
|
|
// non-final fields (2-element) and final fields (3-element) if not TEST_SETTER
|
|
if (c.length == 2 || (testMode & TEST_SETTER) == 0)
|
|
return c;
|
|
|
|
// final fields (3-element)
|
|
assertTrue((testMode & TEST_SETTER) != 0 && c[0] instanceof Field && c[2] == Error.class);
|
|
if ((testMode & TEST_UNREFLECT) == 0)
|
|
return new Object[]{ c[0], c[2]}; // negative test case; can't set on final fields
|
|
|
|
// unreflectSetter grants write access on instance final field if accessible flag is true
|
|
// hence promote the negative test case to positive test case
|
|
Field f = (Field) c[0];
|
|
int mods = f.getModifiers();
|
|
if (!Modifier.isFinal(mods) || (!Modifier.isStatic(mods) && f.isAccessible())) {
|
|
// positive test case
|
|
return new Object[]{ c[0], c[1] };
|
|
} else {
|
|
// otherwise, negative test case
|
|
return new Object[]{ c[0], c[2]};
|
|
}
|
|
}
|
|
}
|
|
|
|
static final int TEST_UNREFLECT = 1, TEST_FIND_FIELD = 2, TEST_FIND_STATIC = 3, TEST_SETTER = 0x10, TEST_BOUND = 0x20, TEST_NPE = 0x40;
|
|
|
|
static boolean testModeMatches(int testMode, boolean isStatic) {
|
|
switch (testMode) {
|
|
case TEST_FIND_STATIC: return isStatic;
|
|
case TEST_FIND_FIELD: return !isStatic;
|
|
case TEST_UNREFLECT: return true; // unreflect matches both
|
|
}
|
|
throw new InternalError("testMode="+testMode);
|
|
}
|
|
|
|
static class Callee {
|
|
static Object id() { return called("id"); }
|
|
static Object id(Object x) { return called("id", x); }
|
|
static Object id(Object x, Object y) { return called("id", x, y); }
|
|
static Object id(Object x, Object y, Object z) { return called("id", x, y, z); }
|
|
static Object id(Object... vx) { return called("id", vx); }
|
|
static MethodHandle ofType(int n) {
|
|
return ofType(Object.class, n);
|
|
}
|
|
static MethodHandle ofType(Class<?> rtype, int n) {
|
|
if (n == -1)
|
|
return ofType(MethodType.methodType(rtype, Object[].class));
|
|
return ofType(MethodType.genericMethodType(n).changeReturnType(rtype));
|
|
}
|
|
static MethodHandle ofType(Class<?> rtype, Class<?>... ptypes) {
|
|
return ofType(MethodType.methodType(rtype, ptypes));
|
|
}
|
|
static MethodHandle ofType(MethodType type) {
|
|
Class<?> rtype = type.returnType();
|
|
String pfx = "";
|
|
if (rtype != Object.class)
|
|
pfx = rtype.getSimpleName().substring(0, 1).toLowerCase();
|
|
String name = pfx+"id";
|
|
try {
|
|
return PRIVATE.findStatic(Callee.class, name, type);
|
|
} catch (NoSuchMethodException | IllegalAccessException ex) {
|
|
throw new RuntimeException(ex);
|
|
}
|
|
}
|
|
}
|
|
|
|
static Object invokee(Object... args) {
|
|
return called("invokee", args).hashCode();
|
|
}
|
|
|
|
protected static final String MISSING_ARG = "missingArg";
|
|
protected static final String MISSING_ARG_2 = "missingArg#2";
|
|
|
|
static Object targetIfEquals() {
|
|
return called("targetIfEquals");
|
|
}
|
|
|
|
static Object fallbackIfNotEquals() {
|
|
return called("fallbackIfNotEquals");
|
|
}
|
|
|
|
static Object targetIfEquals(Object x) {
|
|
assertEquals(x, MISSING_ARG);
|
|
return called("targetIfEquals", x);
|
|
}
|
|
|
|
static Object fallbackIfNotEquals(Object x) {
|
|
assertFalse(x.toString(), x.equals(MISSING_ARG));
|
|
return called("fallbackIfNotEquals", x);
|
|
}
|
|
|
|
static Object targetIfEquals(Object x, Object y) {
|
|
assertEquals(x, y);
|
|
return called("targetIfEquals", x, y);
|
|
}
|
|
|
|
static Object fallbackIfNotEquals(Object x, Object y) {
|
|
assertFalse(x.toString(), x.equals(y));
|
|
return called("fallbackIfNotEquals", x, y);
|
|
}
|
|
|
|
static Object targetIfEquals(Object x, Object y, Object z) {
|
|
assertEquals(x, y);
|
|
return called("targetIfEquals", x, y, z);
|
|
}
|
|
|
|
static Object fallbackIfNotEquals(Object x, Object y, Object z) {
|
|
assertFalse(x.toString(), x.equals(y));
|
|
return called("fallbackIfNotEquals", x, y, z);
|
|
}
|
|
|
|
static boolean loopIntPred(int a) {
|
|
if (verbosity >= 5) {
|
|
System.out.println("int pred " + a + " -> " + (a < 7));
|
|
}
|
|
return a < 7;
|
|
}
|
|
|
|
static boolean loopDoublePred(int a, double b) {
|
|
if (verbosity >= 5) {
|
|
System.out.println("double pred (a=" + a + ") " + b + " -> " + (b > 0.5));
|
|
}
|
|
return b > 0.5;
|
|
}
|
|
|
|
static boolean loopStringPred(int a, double b, String c) {
|
|
if (verbosity >= 5) {
|
|
System.out.println("String pred (a=" + a + ",b=" + b + ") " + c + " -> " + (c.length() <= 9));
|
|
}
|
|
return c.length() <= 9;
|
|
}
|
|
|
|
static int loopIntStep(int a) {
|
|
if (verbosity >= 5) {
|
|
System.out.println("int step " + a + " -> " + (a + 1));
|
|
}
|
|
return a + 1;
|
|
}
|
|
|
|
static double loopDoubleStep(int a, double b) {
|
|
if (verbosity >= 5) {
|
|
System.out.println("double step (a=" + a + ") " + b + " -> " + (b / 2.0));
|
|
}
|
|
return b / 2.0;
|
|
}
|
|
|
|
static String loopStringStep(int a, double b, String c) {
|
|
if (verbosity >= 5) {
|
|
System.out.println("String step (a=" + a + ",b=" + b + ") " + c + " -> " + (c + a));
|
|
}
|
|
return c + a;
|
|
}
|
|
|
|
static void vtarget(String[] a) {
|
|
// naught, akin to identity
|
|
}
|
|
|
|
static void vtargetThrow(String[] a) throws Exception {
|
|
throw new Exception("thrown");
|
|
}
|
|
|
|
static void vcleanupPassThrough(Throwable t, String[] a) {
|
|
assertNull(t);
|
|
// naught, akin to identity
|
|
}
|
|
|
|
static void vcleanupAugment(Throwable t, String[] a) {
|
|
assertNull(t);
|
|
a[0] = "augmented";
|
|
}
|
|
|
|
static void vcleanupCatch(Throwable t, String[] a) {
|
|
assertNotNull(t);
|
|
a[0] = "caught";
|
|
}
|
|
|
|
static void vcleanupThrow(Throwable t, String[] a) throws Exception {
|
|
assertNotNull(t);
|
|
throw new Exception("rethrown");
|
|
}
|
|
}
|
|
// Local abbreviated copy of sun.invoke.util.ValueConversions
|
|
// This guy tests access from outside the same package member, but inside
|
|
// the package itself.
|
|
class ValueConversions {
|
|
private static final Lookup IMPL_LOOKUP = MethodHandles.lookup();
|
|
private static final Object[] NO_ARGS_ARRAY = {};
|
|
private static Object[] makeArray(Object... args) { return args; }
|
|
private static Object[] array() { return NO_ARGS_ARRAY; }
|
|
private static Object[] array(Object a0)
|
|
{ return makeArray(a0); }
|
|
private static Object[] array(Object a0, Object a1)
|
|
{ return makeArray(a0, a1); }
|
|
private static Object[] array(Object a0, Object a1, Object a2)
|
|
{ return makeArray(a0, a1, a2); }
|
|
private static Object[] array(Object a0, Object a1, Object a2, Object a3)
|
|
{ return makeArray(a0, a1, a2, a3); }
|
|
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4)
|
|
{ return makeArray(a0, a1, a2, a3, a4); }
|
|
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5)
|
|
{ return makeArray(a0, a1, a2, a3, a4, a5); }
|
|
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5, Object a6)
|
|
{ return makeArray(a0, a1, a2, a3, a4, a5, a6); }
|
|
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5, Object a6, Object a7)
|
|
{ return makeArray(a0, a1, a2, a3, a4, a5, a6, a7); }
|
|
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5, Object a6, Object a7,
|
|
Object a8)
|
|
{ return makeArray(a0, a1, a2, a3, a4, a5, a6, a7, a8); }
|
|
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5, Object a6, Object a7,
|
|
Object a8, Object a9)
|
|
{ return makeArray(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9); }
|
|
|
|
static MethodHandle[] makeArrays() {
|
|
ArrayList<MethodHandle> arrays = new ArrayList<>();
|
|
MethodHandles.Lookup lookup = IMPL_LOOKUP;
|
|
for (;;) {
|
|
int nargs = arrays.size();
|
|
MethodType type = MethodType.genericMethodType(nargs).changeReturnType(Object[].class);
|
|
String name = "array";
|
|
MethodHandle array = null;
|
|
try {
|
|
array = lookup.findStatic(ValueConversions.class, name, type);
|
|
} catch (ReflectiveOperationException ex) {
|
|
// break from loop!
|
|
}
|
|
if (array == null) break;
|
|
arrays.add(array);
|
|
}
|
|
assertTrue(arrays.size() == 11); // current number of methods
|
|
return arrays.toArray(new MethodHandle[0]);
|
|
}
|
|
|
|
static final MethodHandle[] ARRAYS = makeArrays();
|
|
|
|
/** Return a method handle that takes the indicated number of Object
|
|
* arguments and returns an Object array of them, as if for varargs.
|
|
*/
|
|
public static MethodHandle varargsArray(int nargs) {
|
|
if (nargs < ARRAYS.length)
|
|
return ARRAYS[nargs];
|
|
return MethodHandles.identity(Object[].class).asCollector(Object[].class, nargs);
|
|
}
|
|
|
|
public static MethodHandle varargsArray(Class<?> arrayType, int nargs) {
|
|
Class<?> elemType = arrayType.getComponentType();
|
|
MethodType vaType = MethodType.methodType(arrayType, Collections.<Class<?>>nCopies(nargs, elemType));
|
|
MethodHandle mh = varargsArray(nargs);
|
|
if (arrayType != Object[].class)
|
|
mh = MethodHandles.filterReturnValue(mh, CHANGE_ARRAY_TYPE.bindTo(arrayType));
|
|
return mh.asType(vaType);
|
|
}
|
|
|
|
static Object changeArrayType(Class<?> arrayType, Object[] a) {
|
|
Class<?> elemType = arrayType.getComponentType();
|
|
if (!elemType.isPrimitive())
|
|
return Arrays.copyOf(a, a.length, arrayType.asSubclass(Object[].class));
|
|
Object b = java.lang.reflect.Array.newInstance(elemType, a.length);
|
|
for (int i = 0; i < a.length; i++)
|
|
java.lang.reflect.Array.set(b, i, a[i]);
|
|
return b;
|
|
}
|
|
|
|
private static final MethodHandle CHANGE_ARRAY_TYPE;
|
|
static {
|
|
try {
|
|
CHANGE_ARRAY_TYPE = IMPL_LOOKUP.findStatic(ValueConversions.class, "changeArrayType",
|
|
MethodType.methodType(Object.class, Class.class, Object[].class));
|
|
} catch (NoSuchMethodException | IllegalAccessException ex) {
|
|
Error err = new InternalError("uncaught exception");
|
|
err.initCause(ex);
|
|
throw err;
|
|
}
|
|
}
|
|
|
|
private static final List<Object> NO_ARGS_LIST = Arrays.asList(NO_ARGS_ARRAY);
|
|
private static List<Object> makeList(Object... args) { return Arrays.asList(args); }
|
|
private static List<Object> list() { return NO_ARGS_LIST; }
|
|
private static List<Object> list(Object a0)
|
|
{ return makeList(a0); }
|
|
private static List<Object> list(Object a0, Object a1)
|
|
{ return makeList(a0, a1); }
|
|
private static List<Object> list(Object a0, Object a1, Object a2)
|
|
{ return makeList(a0, a1, a2); }
|
|
private static List<Object> list(Object a0, Object a1, Object a2, Object a3)
|
|
{ return makeList(a0, a1, a2, a3); }
|
|
private static List<Object> list(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4)
|
|
{ return makeList(a0, a1, a2, a3, a4); }
|
|
private static List<Object> list(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5)
|
|
{ return makeList(a0, a1, a2, a3, a4, a5); }
|
|
private static List<Object> list(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5, Object a6)
|
|
{ return makeList(a0, a1, a2, a3, a4, a5, a6); }
|
|
private static List<Object> list(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5, Object a6, Object a7)
|
|
{ return makeList(a0, a1, a2, a3, a4, a5, a6, a7); }
|
|
private static List<Object> list(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5, Object a6, Object a7,
|
|
Object a8)
|
|
{ return makeList(a0, a1, a2, a3, a4, a5, a6, a7, a8); }
|
|
private static List<Object> list(Object a0, Object a1, Object a2, Object a3,
|
|
Object a4, Object a5, Object a6, Object a7,
|
|
Object a8, Object a9)
|
|
{ return makeList(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9); }
|
|
|
|
static MethodHandle[] makeLists() {
|
|
ArrayList<MethodHandle> lists = new ArrayList<>();
|
|
MethodHandles.Lookup lookup = IMPL_LOOKUP;
|
|
for (;;) {
|
|
int nargs = lists.size();
|
|
MethodType type = MethodType.genericMethodType(nargs).changeReturnType(List.class);
|
|
String name = "list";
|
|
MethodHandle list = null;
|
|
try {
|
|
list = lookup.findStatic(ValueConversions.class, name, type);
|
|
} catch (ReflectiveOperationException ex) {
|
|
// break from loop!
|
|
}
|
|
if (list == null) break;
|
|
lists.add(list);
|
|
}
|
|
assertTrue(lists.size() == 11); // current number of methods
|
|
return lists.toArray(new MethodHandle[0]);
|
|
}
|
|
|
|
static final MethodHandle[] LISTS = makeLists();
|
|
static final MethodHandle AS_LIST;
|
|
|
|
static {
|
|
try {
|
|
AS_LIST = IMPL_LOOKUP.findStatic(Arrays.class, "asList", MethodType.methodType(List.class, Object[].class));
|
|
} catch (NoSuchMethodException | IllegalAccessException ex) { throw new RuntimeException(ex); }
|
|
}
|
|
|
|
/** Return a method handle that takes the indicated number of Object
|
|
* arguments and returns List.
|
|
*/
|
|
public static MethodHandle varargsList(int nargs) {
|
|
if (nargs < LISTS.length)
|
|
return LISTS[nargs];
|
|
return AS_LIST.asCollector(Object[].class, nargs);
|
|
}
|
|
}
|
|
// This guy tests access from outside the same package member, but inside
|
|
// the package itself.
|
|
class PackageSibling {
|
|
static Lookup lookup() {
|
|
return MethodHandles.lookup();
|
|
}
|
|
}
|