7001423: JSR 292 bytecode enhancements need unit tests

Reviewed-by: twisti

test/java/dyn/InvokeDynamicPrintArgs.java

+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test
+ * @summary smoke test for invokedynamic instructions
+ * @library indify
+ * @compile InvokeDynamicPrintArgs.java
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableInvokeDynamic
+ *      indify.Indify
+ *      --verify-specifier-count=3 --transitionalJSR292=false
+ *      --expand-properties --classpath ${test.classes}
+ *      --java InvokeDynamicPrintArgs --check-output
+ */
+
+import java.util.*;
+import java.io.*;
+
+import java.dyn.*;
+import static java.dyn.MethodHandles.*;
+import static java.dyn.MethodType.*;
+
+public class InvokeDynamicPrintArgs {
+    public static void main(String... av) throws Throwable {
+        if (av.length > 0)  openBuf();  // --check-output mode
+        System.out.println("Printing some argument lists, starting with a empty one:");
+        INDY_nothing().invokeExact();                 // BSM specifier #0 = {bsm}
+        INDY_bar().invokeExact("bar arg", 1);         // BSM specifier #1 = {bsm2, Void.class, "void type"}
+        INDY_bar2().invokeExact("bar2 arg", 222);     // BSM specifier #1 = (same)
+        INDY_baz().invokeExact("baz arg", 2, 3.14);   // BSM specifier #2 = {bsm2, 1234.5}
+        INDY_foo().invokeExact("foo arg");            // BSM specifier #0 = (same)
+        // Hence, BSM specifier count should be 3.  See "--verify-specifier-count=3" above.
+        System.out.println("Done printing argument lists.");
+        closeBuf();
+    }
+
+    private static PrintStream oldOut;
+    private static ByteArrayOutputStream buf;
+    private static void openBuf() {
+        oldOut = System.out;
+        buf = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(buf));
+    }
+    private static void closeBuf() {
+        if (buf == null)  return;
+        System.out.flush();
+        System.setOut(oldOut);
+        String[] haveLines = new String(buf.toByteArray()).split("[\n\r]+");
+        for (String line : haveLines)  System.out.println(line);
+        Iterator<String> iter = Arrays.asList(haveLines).iterator();
+        for (String want : EXPECT_OUTPUT) {
+            String have = iter.hasNext() ? iter.next() : "[EOF]";
+            if (want.equals(have))  continue;
+            System.err.println("want line: "+want);
+            System.err.println("have line: "+have);
+            throw new AssertionError("unexpected output: "+have);
+        }
+        if (iter.hasNext())
+            throw new AssertionError("unexpected output: "+iter.next());
+    }
+    private static final String[] EXPECT_OUTPUT = {
+        "Printing some argument lists, starting with a empty one:",
+        "[InvokeDynamicPrintArgs, nothing, ()void][]",
+        "[InvokeDynamicPrintArgs, bar, (java.lang.String,int)void, class java.lang.Void, void type!, 1, 234.5, 67.5, 89][bar arg, 1]",
+        "[InvokeDynamicPrintArgs, bar2, (java.lang.String,int)void, class java.lang.Void, void type!, 1, 234.5, 67.5, 89][bar2 arg, 222]",
+        "[InvokeDynamicPrintArgs, baz, (java.lang.String,int,double)void, 1234.5][baz arg, 2, 3.14]",
+        "[InvokeDynamicPrintArgs, foo, (java.lang.String)void][foo arg]",
+        "Done printing argument lists."
+    };
+
+    private static void printArgs(Object bsmInfo, Object... args) {
+        System.out.println(bsmInfo+Arrays.deepToString(args));
+    }
+    private static MethodHandle MH_printArgs() throws ReflectiveOperationException {
+        shouldNotCallThis();
+        return lookup().findStatic(lookup().lookupClass(),
+                                   "printArgs", methodType(void.class, Object.class, Object[].class));
+    }
+
+    private static CallSite bsm(Lookup caller, String name, MethodType type) throws ReflectiveOperationException {
+        // ignore caller and name, but match the type:
+        Object bsmInfo = Arrays.asList(caller, name, type);
+        return new CallSite(MH_printArgs().bindTo(bsmInfo).asCollector(Object[].class, type.parameterCount()).asType(type));
+    }
+    private static MethodType MT_bsm() {
+        shouldNotCallThis();
+        return methodType(CallSite.class, Lookup.class, String.class, MethodType.class);
+    }
+    private static MethodHandle MH_bsm() throws ReflectiveOperationException {
+        shouldNotCallThis();
+        return lookup().findStatic(lookup().lookupClass(), "bsm", MT_bsm());
+    }
+
+    private static CallSite bsm2(Lookup caller, String name, MethodType type, Object arg) throws ReflectiveOperationException {
+        // ignore caller and name, but match the type:
+        List<Object> bsmInfo = new ArrayList<>(Arrays.asList(caller, name, type));
+        if (arg instanceof Object[])
+            bsmInfo.addAll(Arrays.asList((Object[])arg));
+        else
+            bsmInfo.add(arg);
+        return new CallSite(MH_printArgs().bindTo(bsmInfo).asCollector(Object[].class, type.parameterCount()).asType(type));
+    }
+    private static MethodType MT_bsm2() {
+        shouldNotCallThis();
+        return methodType(CallSite.class, Lookup.class, String.class, MethodType.class, Object.class);
+    }
+    private static MethodHandle MH_bsm2() throws ReflectiveOperationException {
+        shouldNotCallThis();
+        return lookup().findStatic(lookup().lookupClass(), "bsm2", MT_bsm2());
+    }
+
+    private static MethodHandle INDY_nothing() throws Throwable {
+        shouldNotCallThis();
+        return ((CallSite) MH_bsm().invokeGeneric(lookup(),
+                                                  "nothing", methodType(void.class)
+                                                  )).dynamicInvoker();
+    }
+    private static MethodHandle INDY_foo() throws Throwable {
+        shouldNotCallThis();
+        return ((CallSite) MH_bsm().invokeGeneric(lookup(),
+                                                  "foo", methodType(void.class, String.class)
+                                                  )).dynamicInvoker();
+    }
+    private static MethodHandle INDY_bar() throws Throwable {
+        shouldNotCallThis();
+        return ((CallSite) MH_bsm2().invokeGeneric(lookup(),
+                                                  "bar", methodType(void.class, String.class, int.class)
+                                                  , new Object[] { Void.class, "void type!",
+                                                                   1, 234.5F, 67.5, (long)89 }
+                                                  )).dynamicInvoker();
+    }
+    private static MethodHandle INDY_bar2() throws Throwable {
+        shouldNotCallThis();
+        return ((CallSite) MH_bsm2().invokeGeneric(lookup(),
+                                                  "bar2", methodType(void.class, String.class, int.class)
+                                                  , new Object[] { Void.class, "void type!",
+                                                                   1, 234.5F, 67.5, (long)89 }
+                                                  )).dynamicInvoker();
+    }
+    private static MethodHandle INDY_baz() throws Throwable {
+        shouldNotCallThis();
+        return ((CallSite) MH_bsm2().invokeGeneric(lookup(),
+                                                  "baz", methodType(void.class, String.class, int.class, double.class)
+                                                  , 1234.5
+                                                  )).dynamicInvoker();
+    }
+
+    private static void shouldNotCallThis() {
+        // if this gets called, the transformation has not taken place
+        if (System.getProperty("InvokeDynamicPrintArgs.allow-untransformed") != null)  return;
+        throw new AssertionError("this code should be statically transformed away by Indify");
+    }
+}