langtools/test/tools/javac/meth/InvokeMH.java
author jrose
Sat, 01 May 2010 15:05:39 -0700
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6939134: JSR 292 adjustments to method handle invocation Summary: split MethodHandle.invoke into invokeExact and invokeGeneric Reviewed-by: twisti
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/*
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 * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 */
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/*
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 * @test
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 * @bug 6754038
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 * @summary Generate call sites for method handle
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 * @author jrose
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 *
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 * @compile -source 7 -target 7 InvokeMH.java
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 */
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/*
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 * Standalone testing:
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 * <code>
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 * $ cd $MY_REPO_DIR/langtools
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 * $ (cd make; make)
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 * $ ./dist/bootstrap/bin/javac -d dist test/tools/javac/meth/InvokeMH.java
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 * $ javap -c -classpath dist meth.InvokeMH
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 * </code>
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 */
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package meth;
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import java.dyn.MethodHandle;
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public class InvokeMH {
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    void test(MethodHandle mh_SiO,
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              MethodHandle mh_vS,
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              MethodHandle mh_vi,
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              MethodHandle mh_vv) throws Throwable {
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        Object o; String s; int i;  // for return type testing
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        // next five must have sig = (String,int)Object
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        mh_SiO.invokeExact("world", 123);
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        mh_SiO.invokeExact("mundus", 456);
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        Object k = "kosmos";
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        mh_SiO.invokeExact((String)k, 789);
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        o = mh_SiO.invokeExact((String)null, 000);
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        o = mh_SiO.<Object>invokeExact("arda", -123);
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        // sig = ()String
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        s = mh_vS.<String>invokeExact();
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        // sig = ()int
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        i = mh_vi.<int>invokeExact();
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        o = mh_vi.<int>invokeExact();
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        //s = mh_vi.<int>invokeExact(); //BAD
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        mh_vi.<int>invokeExact();
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        // sig = ()void
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        //o = mh_vv.<void>invokeExact(); //BAD
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        mh_vv.<void>invokeExact();
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    }
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    void testGen(MethodHandle mh_SiO,
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                 MethodHandle mh_vS,
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                 MethodHandle mh_vi,
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                 MethodHandle mh_vv) throws Throwable {
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        Object o; String s; int i;  // for return type testing
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        // next five must have sig = (*,*)*
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        mh_SiO.invokeGeneric((Object)"world", (Object)123);
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        mh_SiO.<void>invokeGeneric((Object)"mundus", (Object)456);
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        Object k = "kosmos";
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        mh_SiO.invokeGeneric(k, 789);
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        o = mh_SiO.invokeGeneric(null, 000);
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        o = mh_SiO.<Object>invokeGeneric("arda", -123);
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        // sig = ()String
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        o = mh_vS.invokeGeneric();
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        // sig = ()int
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        i = mh_vi.<int>invokeGeneric();
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        o = mh_vi.invokeGeneric();
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        //s = mh_vi.<int>invokeGeneric(); //BAD
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        mh_vi.<void>invokeGeneric();
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        // sig = ()void
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        //o = mh_vv.<void>invokeGeneric(); //BAD
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        o = mh_vv.invokeGeneric();
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    }
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}