1 /*

     2  * Copyright 2008-2009 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.dyn;

    27 

    28 import java.dyn.JavaMethodHandle;

    29 import java.dyn.MethodHandle;

    30 import java.dyn.MethodHandles;

    31 import java.dyn.MethodType;

    32 import java.dyn.NoAccessException;

    33 import java.lang.reflect.Constructor;

    34 import java.lang.reflect.InvocationTargetException;

    35 import sun.dyn.util.ValueConversions;

    36 import sun.dyn.util.Wrapper;

    37 

    38 /**

    39  * Adapters which mediate between incoming calls which are not generic

    40  * and outgoing calls which are.  Any call can be represented generically

    41  * boxing up its arguments, and (on return) unboxing the return value.

    42  * <p>

    43  * A call is "generic" (in MethodHandle terms) if its MethodType features

    44  * only Object arguments.  A non-generic call therefore features

    45  * primitives and/or reference types other than Object.

    46  * An adapter has types for its incoming and outgoing calls.

    47  * The incoming call type is simply determined by the adapter's type

    48  * (the MethodType it presents to callers).  The outgoing call type

    49  * is determined by the adapter's target (a MethodHandle that the adapter

    50  * either binds internally or else takes as a leading argument).

    51  * (To stretch the term, adapter-like method handles may have multiple

    52  * targets or be polymorphic across multiple call types.)

    53  * <p>

    54  * This adapter can sometimes be more directly implemented

    55  * by the JVM's built-in OP_SPREAD_ARGS adapter.

    56  * @author jrose

    57  */

    58 class FromGeneric {

    59     // type for the outgoing call (may have primitives, etc.)

    60     private final MethodType targetType;

    61     // type of the outgoing call internal to the adapter

    62     private final MethodType internalType;

    63     // prototype adapter (clone and customize for each new target!)

    64     private final Adapter adapter;

    65     // entry point for adapter (Adapter mh, a...) => ...

    66     private final MethodHandle entryPoint;

    67     // unboxing invoker of type (MH, Object**N) => raw return value

    68     // it makes up the difference of internalType => targetType

    69     private final MethodHandle unboxingInvoker;

    70     // conversion which boxes a the target's raw return value

    71     private final MethodHandle returnConversion;

    72 

    73     /** Compute and cache information common to all unboxing adapters

    74      *  that can call out to targets of the erasure-family of the given erased type.

    75      */

    76     private FromGeneric(MethodType targetType) {

    77         this.targetType = targetType;

    78         MethodType internalType0;

    79         // the target invoker will generally need casts on reference arguments

    80         Adapter ad = findAdapter(internalType0 = targetType.erase());

    81         if (ad != null) {

    82             // Immediate hit to exactly the adapter we want,

    83             // with no monkeying around with primitive types.

    84             this.internalType = internalType0;

    85             this.adapter = ad;

    86             this.entryPoint = ad.prototypeEntryPoint();

    87             this.returnConversion = computeReturnConversion(targetType, internalType0);

    88             this.unboxingInvoker = computeUnboxingInvoker(targetType, internalType0);

    89             return;

    90         }

    91 

    92         // outgoing primitive arguments will be wrapped; unwrap them

    93         MethodType primsAsObj = MethodTypeImpl.of(targetType).primArgsAsBoxes();

    94         MethodType objArgsRawRet = MethodTypeImpl.of(primsAsObj).primsAsInts();

    95         if (objArgsRawRet != targetType)

    96             ad = findAdapter(internalType0 = objArgsRawRet);

    97         if (ad == null) {

    98             ad = buildAdapterFromBytecodes(internalType0 = targetType);

    99         }

   100         this.internalType = internalType0;

   101         this.adapter = ad;

   102         MethodType tepType = targetType.insertParameterType(0, adapter.getClass());

   103         this.entryPoint = ad.prototypeEntryPoint();

   104         this.returnConversion = computeReturnConversion(targetType, internalType0);

   105         this.unboxingInvoker = computeUnboxingInvoker(targetType, internalType0);

   106     }

   107 

   108     /**

   109      * The typed target will be called according to targetType.

   110      * The adapter code will in fact see the raw result from internalType,

   111      * and must box it into an object.  Produce a converter for this.

   112      */

   113     private static MethodHandle computeReturnConversion(

   114             MethodType targetType, MethodType internalType) {

   115         Class<?> tret = targetType.returnType();

   116         Class<?> iret = internalType.returnType();

   117         Wrapper wrap = Wrapper.forBasicType(tret);

   118         if (!iret.isPrimitive()) {

   119             assert(iret == Object.class);

   120             return ValueConversions.identity();

   121         } else if (wrap.primitiveType() == iret) {

   122             return ValueConversions.box(wrap, false);

   123         } else {

   124             assert(tret == double.class ? iret == long.class : iret == int.class);

   125             return ValueConversions.boxRaw(wrap, false);

   126         }

   127     }

   128 

   129     /**

   130      * The typed target will need an exact invocation point; provide it here.

   131      * The adapter will possibly need to make a slightly different call,

   132      * so adapt the invoker.  This way, the logic for making up the

   133      * difference between what the adapter can call and what the target

   134      * needs can be cached once per type.

   135      */

   136     private static MethodHandle computeUnboxingInvoker(

   137             MethodType targetType, MethodType internalType) {

   138         // All the adapters we have here have reference-untyped internal calls.

   139         assert(internalType == internalType.erase());

   140         MethodHandle invoker = MethodHandles.exactInvoker(targetType);

   141         // cast all narrow reference types, unbox all primitive arguments:

   142         MethodType fixArgsType = internalType.changeReturnType(targetType.returnType());

   143         MethodHandle fixArgs = AdapterMethodHandle.convertArguments(Access.TOKEN,

   144                                  invoker, Invokers.invokerType(fixArgsType),

   145                                  invoker.type(), null);

   146         if (fixArgs == null)

   147             throw new InternalError("bad fixArgs");

   148         // reinterpret the calling sequence as raw:

   149         MethodHandle retyper = AdapterMethodHandle.makeRawRetypeOnly(Access.TOKEN,

   150                                         Invokers.invokerType(internalType), fixArgs);

   151         if (retyper == null)

   152             throw new InternalError("bad retyper");

   153         return retyper;

   154     }

   155 

   156     Adapter makeInstance(MethodHandle typedTarget) {

   157         MethodType type = typedTarget.type();

   158         if (type == targetType) {

   159             return adapter.makeInstance(entryPoint, unboxingInvoker, returnConversion, typedTarget);

   160         }

   161         // my erased-type is not exactly the same as the desired type

   162         assert(type.erase() == targetType);  // else we are busted

   163         MethodHandle invoker = computeUnboxingInvoker(type, internalType);

   164         return adapter.makeInstance(entryPoint, invoker, returnConversion, typedTarget);

   165     }

   166 

   167     /** Build an adapter of the given generic type, which invokes typedTarget

   168      *  on the incoming arguments, after unboxing as necessary.

   169      *  The return value is boxed if necessary.

   170      * @param genericType  the required type of the result

   171      * @param typedTarget the target

   172      * @return an adapter method handle

   173      */

   174     public static MethodHandle make(MethodHandle typedTarget) {

   175         MethodType type = typedTarget.type();

   176         if (type == type.generic())  return typedTarget;

   177         return FromGeneric.of(type).makeInstance(typedTarget);

   178     }

   179 

   180     /** Return the adapter information for this type's erasure. */

   181     static FromGeneric of(MethodType type) {

   182         MethodTypeImpl form = MethodTypeImpl.of(type);

   183         FromGeneric fromGen = form.fromGeneric;

   184         if (fromGen == null)

   185             form.fromGeneric = fromGen = new FromGeneric(form.erasedType());

   186         return fromGen;

   187     }

   188 

   189     public String toString() {

   190         return "FromGeneric"+targetType;

   191     }

   192 

   193     /* Create an adapter that handles spreading calls for the given type. */

   194     static Adapter findAdapter(MethodType internalType) {

   195         MethodType entryType = internalType.generic();

   196         MethodTypeImpl form = MethodTypeImpl.of(internalType);

   197         Class<?> rtype = internalType.returnType();

   198         int argc = form.parameterCount();

   199         int lac = form.longPrimitiveParameterCount();

   200         int iac = form.primitiveParameterCount() - lac;

   201         String intsAndLongs = (iac > 0 ? "I"+iac : "")+(lac > 0 ? "J"+lac : "");

   202         String rawReturn = String.valueOf(Wrapper.forPrimitiveType(rtype).basicTypeChar());

   203         String cname0 = rawReturn + argc;

   204         String cname1 = "A"       + argc;

   205         String[] cnames = { cname0+intsAndLongs, cname0, cname1+intsAndLongs, cname1 };

   206         String iname = "invoke_"+cname0+intsAndLongs;

   207         // e.g., D5I2, D5, L5I2, L5; invoke_D5

   208         for (String cname : cnames) {

   209             Class<? extends Adapter> acls = Adapter.findSubClass(cname);

   210             if (acls == null)  continue;

   211             // see if it has the required invoke method

   212             MethodHandle entryPoint = null;

   213             try {

   214                 entryPoint = MethodHandleImpl.IMPL_LOOKUP.findSpecial(acls, iname, entryType, acls);

   215             } catch (NoAccessException ex) {

   216             }

   217             if (entryPoint == null)  continue;

   218             Constructor<? extends Adapter> ctor = null;

   219             try {

   220                 ctor = acls.getDeclaredConstructor(MethodHandle.class);

   221             } catch (NoSuchMethodException ex) {

   222             } catch (SecurityException ex) {

   223             }

   224             if (ctor == null)  continue;

   225             try {

   226                 // Produce an instance configured as a prototype.

   227                 return ctor.newInstance(entryPoint);

   228             } catch (IllegalArgumentException ex) {

   229             } catch (InvocationTargetException ex) {

   230             } catch (InstantiationException ex) {

   231             } catch (IllegalAccessException ex) {

   232             }

   233         }

   234         return null;

   235     }

   236 

   237     static Adapter buildAdapterFromBytecodes(MethodType internalType) {

   238         throw new UnsupportedOperationException("NYI");

   239     }

   240 

   241     /**

   242      * This adapter takes some untyped arguments, and returns an untyped result.

   243      * Internally, it applies the invoker to the target, which causes the

   244      * objects to be unboxed; the result is a raw type in L/I/J/F/D.

   245      * This result is passed to convert, which is responsible for

   246      * converting the raw result into a boxed object.

   247      * The invoker is kept separate from the target because it can be

   248      * generated once per type erasure family, and reused across adapters.

   249      */

   250     static abstract class Adapter extends JavaMethodHandle {

   251         /*

   252          * class X<<R,int N>> extends Adapter {

   253          *   (MH, Object**N)=>raw(R) invoker;

   254          *   (any**N)=>R target;

   255          *   raw(R)=>Object convert;

   256          *   Object invoke(Object**N a) = convert(invoker(target, a...))

   257          * }

   258          */

   259         protected final MethodHandle invoker;  // (MH, Object**N) => raw(R)

   260         protected final MethodHandle convert;  // raw(R) => Object

   261         protected final MethodHandle target;   // (any**N) => R

   262 

   263         protected boolean isPrototype() { return target == null; }

   264         protected Adapter(MethodHandle entryPoint) {

   265             this(entryPoint, null, entryPoint, null);

   266             assert(isPrototype());

   267         }

   268         protected MethodHandle prototypeEntryPoint() {

   269             if (!isPrototype())  throw new InternalError();

   270             return convert;

   271         }

   272 

   273         protected Adapter(MethodHandle entryPoint,

   274                           MethodHandle invoker, MethodHandle convert, MethodHandle target) {

   275             super(entryPoint);

   276             this.invoker = invoker;

   277             this.convert = convert;

   278             this.target  = target;

   279         }

   280 

   281         /** Make a copy of self, with new fields. */

   282         protected abstract Adapter makeInstance(MethodHandle entryPoint,

   283                 MethodHandle invoker, MethodHandle convert, MethodHandle target);

   284         // { return new ThisType(entryPoint, convert, target); }

   285 

   286         /// Conversions on the value returned from the target.

   287         protected Object convert_L(Object result) { return convert.<Object>invoke(result); }

   288         protected Object convert_I(int    result) { return convert.<Object>invoke(result); }

   289         protected Object convert_J(long   result) { return convert.<Object>invoke(result); }

   290         protected Object convert_F(float  result) { return convert.<Object>invoke(result); }

   291         protected Object convert_D(double result) { return convert.<Object>invoke(result); }

   292 

   293         static private final String CLASS_PREFIX; // "sun.dyn.FromGeneric$"

   294         static {

   295             String aname = Adapter.class.getName();

   296             String sname = Adapter.class.getSimpleName();

   297             if (!aname.endsWith(sname))  throw new InternalError();

   298             CLASS_PREFIX = aname.substring(0, aname.length() - sname.length());

   299         }

   300         /** Find a sibing class of Adapter. */

   301         static Class<? extends Adapter> findSubClass(String name) {

   302             String cname = Adapter.CLASS_PREFIX + name;

   303             try {

   304                 return Class.forName(cname).asSubclass(Adapter.class);

   305             } catch (ClassNotFoundException ex) {

   306                 return null;

   307             } catch (ClassCastException ex) {

   308                 return null;

   309             }

   310         }

   311     }

   312 

   313     /* generated classes follow this pattern:

   314     static class xA2 extends Adapter {

   315         protected xA2(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   316         protected xA2(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   317                         { super(e, i, c, t); }

   318         protected xA2 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   319                         { return new xA2(e, i, c, t); }

   320         protected Object invoke_L2(Object a0, Object a1) { return convert_L(invoker.<Object>invoke(target, a0, a1)); }

   321         protected Object invoke_I2(Object a0, Object a1) { return convert_I(invoker.<int   >invoke(target, a0, a1)); }

   322         protected Object invoke_J2(Object a0, Object a1) { return convert_J(invoker.<long  >invoke(target, a0, a1)); }

   323         protected Object invoke_F2(Object a0, Object a1) { return convert_F(invoker.<float >invoke(target, a0, a1)); }

   324         protected Object invoke_D2(Object a0, Object a1) { return convert_D(invoker.<double>invoke(target, a0, a1)); }

   325     }

   326     // */

   327 

   328 /*

   329 : SHELL; n=FromGeneric; cp -p $n.java $n.java-; sed < $n.java- > $n.java+ -e '/{{*{{/,/}}*}}/w /tmp/genclasses.java' -e '/}}*}}/q'; (cd /tmp; javac -d . genclasses.java; java -cp . genclasses) >> $n.java+; echo '}' >> $n.java+; mv $n.java+ $n.java; mv $n.java- $n.java~

   330 //{{{

   331 import java.util.*;

   332 class genclasses {

   333     static String[] TYPES = { "Object", "int   ", "long  ", "float ", "double" };

   334     static String[] TCHARS = { "L",     "I",      "J",      "F",      "D",     "A" };

   335     static String[][] TEMPLATES = { {

   336         "@for@ arity=0..10  rcat<=4 nrefs<=99 nints=0   nlongs=0",

   337         "    //@each-cat@",

   338         "    static class @cat@ extends Adapter {",

   339         "        protected @cat@(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype",

   340         "        protected @cat@(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)",

   341         "                        { super(e, i, c, t); }",

   342         "        protected @cat@ makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)",

   343         "                        { return new @cat@(e, i, c, t); }",

   344         "        //@each-R@",

   345         "        protected Object invoke_@catN@(@Tvav@) { return convert_@Rc@(invoker.<@R@>invoke(target@av@)); }",

   346         "        //@end-R@",

   347         "    }",

   348     } };

   349     static final String NEWLINE_INDENT = "\n                ";

   350     enum VAR {

   351         cat, catN, R, Rc, av, Tvav, Ovav;

   352         public final String pattern = "@"+toString().replace('_','.')+"@";

   353         public String binding;

   354         static void makeBindings(boolean topLevel, int rcat, int nrefs, int nints, int nlongs) {

   355             int nargs = nrefs + nints + nlongs;

   356             if (topLevel)

   357                 VAR.cat.binding = catstr(ALL_RETURN_TYPES ? TYPES.length : rcat, nrefs, nints, nlongs);

   358             VAR.catN.binding = catstr(rcat, nrefs, nints, nlongs);

   359             VAR.R.binding = TYPES[rcat];

   360             VAR.Rc.binding = TCHARS[rcat];

   361             String[] Tv = new String[nargs];

   362             String[] av = new String[nargs];

   363             String[] Tvav = new String[nargs];

   364             String[] Ovav = new String[nargs];

   365             for (int i = 0; i < nargs; i++) {

   366                 int tcat = (i < nrefs) ? 0 : (i < nrefs + nints) ? 1 : 2;

   367                 Tv[i] = TYPES[tcat];

   368                 av[i] = arg(i);

   369                 Tvav[i] = param(Tv[i], av[i]);

   370                 Ovav[i] = param("Object", av[i]);

   371             }

   372             VAR.av.binding = comma(", ", av);

   373             VAR.Tvav.binding = comma(Tvav);

   374             VAR.Ovav.binding = comma(Ovav);

   375         }

   376         static String arg(int i) { return "a"+i; }

   377         static String param(String t, String a) { return t+" "+a; }

   378         static String comma(String[] v) { return comma("", v); }

   379         static String comma(String sep, String[] v) {

   380             if (v.length == 0)  return "";

   381             String res = sep+v[0];

   382             for (int i = 1; i < v.length; i++)  res += ", "+v[i];

   383             return res;

   384         }

   385         static String transform(String string) {

   386             for (VAR var : values())

   387                 string = string.replaceAll(var.pattern, var.binding);

   388             return string;

   389         }

   390     }

   391     static String[] stringsIn(String[] strings, int beg, int end) {

   392         return Arrays.copyOfRange(strings, beg, Math.min(end, strings.length));

   393     }

   394     static String[] stringsBefore(String[] strings, int pos) {

   395         return stringsIn(strings, 0, pos);

   396     }

   397     static String[] stringsAfter(String[] strings, int pos) {

   398         return stringsIn(strings, pos, strings.length);

   399     }

   400     static int indexAfter(String[] strings, int pos, String tag) {

   401         return Math.min(indexBefore(strings, pos, tag) + 1, strings.length);

   402     }

   403     static int indexBefore(String[] strings, int pos, String tag) {

   404         for (int i = pos, end = strings.length; ; i++) {

   405             if (i == end || strings[i].endsWith(tag))  return i;

   406         }

   407     }

   408     static int MIN_ARITY, MAX_ARITY, MAX_RCAT, MAX_REFS, MAX_INTS, MAX_LONGS;

   409     static boolean ALL_ARG_TYPES, ALL_RETURN_TYPES;

   410     static HashSet<String> done = new HashSet<String>();

   411     public static void main(String... av) {

   412         for (String[] template : TEMPLATES) {

   413             int forLinesLimit = indexBefore(template, 0, "@each-cat@");

   414             String[] forLines = stringsBefore(template, forLinesLimit);

   415             template = stringsAfter(template, forLinesLimit);

   416             for (String forLine : forLines)

   417                 expandTemplate(forLine, template);

   418         }

   419     }

   420     static void expandTemplate(String forLine, String[] template) {

   421         String[] params = forLine.split("[^0-9]+");

   422         if (params[0].length() == 0)  params = stringsAfter(params, 1);

   423         System.out.println("//params="+Arrays.asList(params));

   424         int pcur = 0;

   425         MIN_ARITY = Integer.valueOf(params[pcur++]);

   426         MAX_ARITY = Integer.valueOf(params[pcur++]);

   427         MAX_RCAT  = Integer.valueOf(params[pcur++]);

   428         MAX_REFS  = Integer.valueOf(params[pcur++]);

   429         MAX_INTS  = Integer.valueOf(params[pcur++]);

   430         MAX_LONGS = Integer.valueOf(params[pcur++]);

   431         if (pcur != params.length)  throw new RuntimeException("bad extra param: "+forLine);

   432         if (MAX_RCAT >= TYPES.length)  MAX_RCAT = TYPES.length - 1;

   433         ALL_ARG_TYPES = (indexBefore(template, 0, "@each-Tv@") < template.length);

   434         ALL_RETURN_TYPES = (indexBefore(template, 0, "@each-R@") < template.length);

   435         for (int nargs = MIN_ARITY; nargs <= MAX_ARITY; nargs++) {

   436             for (int rcat = 0; rcat <= MAX_RCAT; rcat++) {

   437                 expandTemplate(template, true, rcat, nargs, 0, 0);

   438                 if (ALL_ARG_TYPES)  break;

   439                 expandTemplateForPrims(template, true, rcat, nargs, 1, 1);

   440                 if (ALL_RETURN_TYPES)  break;

   441             }

   442         }

   443     }

   444     static String catstr(int rcat, int nrefs, int nints, int nlongs) {

   445         int nargs = nrefs + nints + nlongs;

   446         String cat = TCHARS[rcat] + nargs;

   447         if (!ALL_ARG_TYPES)  cat += (nints==0?"":"I"+nints)+(nlongs==0?"":"J"+nlongs);

   448         return cat;

   449     }

   450     static void expandTemplateForPrims(String[] template, boolean topLevel, int rcat, int nargs, int minints, int minlongs) {

   451         for (int isLong = 0; isLong <= 1; isLong++) {

   452             for (int nprims = 1; nprims <= nargs; nprims++) {

   453                 int nrefs = nargs - nprims;

   454                 int nints = ((1-isLong) * nprims);

   455                 int nlongs = (isLong * nprims);

   456                 expandTemplate(template, topLevel, rcat, nrefs, nints, nlongs);

   457             }

   458         }

   459     }

   460     static void expandTemplate(String[] template, boolean topLevel,

   461                                int rcat, int nrefs, int nints, int nlongs) {

   462         int nargs = nrefs + nints + nlongs;

   463         if (nrefs > MAX_REFS || nints > MAX_INTS || nlongs > MAX_LONGS)  return;

   464         VAR.makeBindings(topLevel, rcat, nrefs, nints, nlongs);

   465         if (topLevel && !done.add(VAR.cat.binding)) {

   466             System.out.println("    //repeat "+VAR.cat.binding);

   467             return;

   468         }

   469         for (int i = 0; i < template.length; i++) {

   470             String line = template[i];

   471             if (line.endsWith("@each-cat@")) {

   472                 // ignore

   473             } else if (line.endsWith("@each-R@")) {

   474                 int blockEnd = indexAfter(template, i, "@end-R@");

   475                 String[] block = stringsIn(template, i+1, blockEnd-1);

   476                 for (int rcat1 = rcat; rcat1 <= MAX_RCAT; rcat1++)

   477                     expandTemplate(block, false, rcat1, nrefs, nints, nlongs);

   478                 VAR.makeBindings(topLevel, rcat, nrefs, nints, nlongs);

   479                 i = blockEnd-1; continue;

   480             } else if (line.endsWith("@each-Tv@")) {

   481                 int blockEnd = indexAfter(template, i, "@end-Tv@");

   482                 String[] block = stringsIn(template, i+1, blockEnd-1);

   483                 expandTemplate(block, false, rcat, nrefs, nints, nlongs);

   484                 expandTemplateForPrims(block, false, rcat, nargs, nints+1, nlongs+1);

   485                 VAR.makeBindings(topLevel, rcat, nrefs, nints, nlongs);

   486                 i = blockEnd-1; continue;

   487             } else {

   488                 System.out.println(VAR.transform(line));

   489             }

   490         }

   491     }

   492 }

   493 //}}} */

   494 //params=[0, 10, 4, 99, 0, 0]

   495     static class A0 extends Adapter {

   496         protected A0(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   497         protected A0(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   498                         { super(e, i, c, t); }

   499         protected A0 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   500                         { return new A0(e, i, c, t); }

   501         protected Object invoke_L0() { return convert_L(invoker.<Object>invoke(target)); }

   502         protected Object invoke_I0() { return convert_I(invoker.<int   >invoke(target)); }

   503         protected Object invoke_J0() { return convert_J(invoker.<long  >invoke(target)); }

   504         protected Object invoke_F0() { return convert_F(invoker.<float >invoke(target)); }

   505         protected Object invoke_D0() { return convert_D(invoker.<double>invoke(target)); }

   506     }

   507     static class A1 extends Adapter {

   508         protected A1(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   509         protected A1(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   510                         { super(e, i, c, t); }

   511         protected A1 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   512                         { return new A1(e, i, c, t); }

   513         protected Object invoke_L1(Object a0) { return convert_L(invoker.<Object>invoke(target, a0)); }

   514         protected Object invoke_I1(Object a0) { return convert_I(invoker.<int   >invoke(target, a0)); }

   515         protected Object invoke_J1(Object a0) { return convert_J(invoker.<long  >invoke(target, a0)); }

   516         protected Object invoke_F1(Object a0) { return convert_F(invoker.<float >invoke(target, a0)); }

   517         protected Object invoke_D1(Object a0) { return convert_D(invoker.<double>invoke(target, a0)); }

   518     }

   519     static class A2 extends Adapter {

   520         protected A2(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   521         protected A2(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   522                         { super(e, i, c, t); }

   523         protected A2 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   524                         { return new A2(e, i, c, t); }

   525         protected Object invoke_L2(Object a0, Object a1) { return convert_L(invoker.<Object>invoke(target, a0, a1)); }

   526         protected Object invoke_I2(Object a0, Object a1) { return convert_I(invoker.<int   >invoke(target, a0, a1)); }

   527         protected Object invoke_J2(Object a0, Object a1) { return convert_J(invoker.<long  >invoke(target, a0, a1)); }

   528         protected Object invoke_F2(Object a0, Object a1) { return convert_F(invoker.<float >invoke(target, a0, a1)); }

   529         protected Object invoke_D2(Object a0, Object a1) { return convert_D(invoker.<double>invoke(target, a0, a1)); }

   530     }

   531     static class A3 extends Adapter {

   532         protected A3(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   533         protected A3(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   534                         { super(e, i, c, t); }

   535         protected A3 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   536                         { return new A3(e, i, c, t); }

   537         protected Object invoke_L3(Object a0, Object a1, Object a2) { return convert_L(invoker.<Object>invoke(target, a0, a1, a2)); }

   538         protected Object invoke_I3(Object a0, Object a1, Object a2) { return convert_I(invoker.<int   >invoke(target, a0, a1, a2)); }

   539         protected Object invoke_J3(Object a0, Object a1, Object a2) { return convert_J(invoker.<long  >invoke(target, a0, a1, a2)); }

   540         protected Object invoke_F3(Object a0, Object a1, Object a2) { return convert_F(invoker.<float >invoke(target, a0, a1, a2)); }

   541         protected Object invoke_D3(Object a0, Object a1, Object a2) { return convert_D(invoker.<double>invoke(target, a0, a1, a2)); }

   542     }

   543     static class A4 extends Adapter {

   544         protected A4(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   545         protected A4(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   546                         { super(e, i, c, t); }

   547         protected A4 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   548                         { return new A4(e, i, c, t); }

   549         protected Object invoke_L4(Object a0, Object a1, Object a2, Object a3) { return convert_L(invoker.<Object>invoke(target, a0, a1, a2, a3)); }

   550         protected Object invoke_I4(Object a0, Object a1, Object a2, Object a3) { return convert_I(invoker.<int   >invoke(target, a0, a1, a2, a3)); }

   551         protected Object invoke_J4(Object a0, Object a1, Object a2, Object a3) { return convert_J(invoker.<long  >invoke(target, a0, a1, a2, a3)); }

   552         protected Object invoke_F4(Object a0, Object a1, Object a2, Object a3) { return convert_F(invoker.<float >invoke(target, a0, a1, a2, a3)); }

   553         protected Object invoke_D4(Object a0, Object a1, Object a2, Object a3) { return convert_D(invoker.<double>invoke(target, a0, a1, a2, a3)); }

   554     }

   555     static class A5 extends Adapter {

   556         protected A5(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   557         protected A5(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   558                         { super(e, i, c, t); }

   559         protected A5 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   560                         { return new A5(e, i, c, t); }

   561         protected Object invoke_L5(Object a0, Object a1, Object a2, Object a3, Object a4) { return convert_L(invoker.<Object>invoke(target, a0, a1, a2, a3, a4)); }

   562         protected Object invoke_I5(Object a0, Object a1, Object a2, Object a3, Object a4) { return convert_I(invoker.<int   >invoke(target, a0, a1, a2, a3, a4)); }

   563         protected Object invoke_J5(Object a0, Object a1, Object a2, Object a3, Object a4) { return convert_J(invoker.<long  >invoke(target, a0, a1, a2, a3, a4)); }

   564         protected Object invoke_F5(Object a0, Object a1, Object a2, Object a3, Object a4) { return convert_F(invoker.<float >invoke(target, a0, a1, a2, a3, a4)); }

   565         protected Object invoke_D5(Object a0, Object a1, Object a2, Object a3, Object a4) { return convert_D(invoker.<double>invoke(target, a0, a1, a2, a3, a4)); }

   566     }

   567     static class A6 extends Adapter {

   568         protected A6(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   569         protected A6(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   570                         { super(e, i, c, t); }

   571         protected A6 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   572                         { return new A6(e, i, c, t); }

   573         protected Object invoke_L6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) { return convert_L(invoker.<Object>invoke(target, a0, a1, a2, a3, a4, a5)); }

   574         protected Object invoke_I6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) { return convert_I(invoker.<int   >invoke(target, a0, a1, a2, a3, a4, a5)); }

   575         protected Object invoke_J6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) { return convert_J(invoker.<long  >invoke(target, a0, a1, a2, a3, a4, a5)); }

   576         protected Object invoke_F6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) { return convert_F(invoker.<float >invoke(target, a0, a1, a2, a3, a4, a5)); }

   577         protected Object invoke_D6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) { return convert_D(invoker.<double>invoke(target, a0, a1, a2, a3, a4, a5)); }

   578     }

   579     static class A7 extends Adapter {

   580         protected A7(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   581         protected A7(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   582                         { super(e, i, c, t); }

   583         protected A7 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   584                         { return new A7(e, i, c, t); }

   585         protected Object invoke_L7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) { return convert_L(invoker.<Object>invoke(target, a0, a1, a2, a3, a4, a5, a6)); }

   586         protected Object invoke_I7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) { return convert_I(invoker.<int   >invoke(target, a0, a1, a2, a3, a4, a5, a6)); }

   587         protected Object invoke_J7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) { return convert_J(invoker.<long  >invoke(target, a0, a1, a2, a3, a4, a5, a6)); }

   588         protected Object invoke_F7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) { return convert_F(invoker.<float >invoke(target, a0, a1, a2, a3, a4, a5, a6)); }

   589         protected Object invoke_D7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) { return convert_D(invoker.<double>invoke(target, a0, a1, a2, a3, a4, a5, a6)); }

   590     }

   591     static class A8 extends Adapter {

   592         protected A8(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   593         protected A8(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   594                         { super(e, i, c, t); }

   595         protected A8 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   596                         { return new A8(e, i, c, t); }

   597         protected Object invoke_L8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) { return convert_L(invoker.<Object>invoke(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   598         protected Object invoke_I8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) { return convert_I(invoker.<int   >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   599         protected Object invoke_J8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) { return convert_J(invoker.<long  >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   600         protected Object invoke_F8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) { return convert_F(invoker.<float >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   601         protected Object invoke_D8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) { return convert_D(invoker.<double>invoke(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   602     }

   603     static class A9 extends Adapter {

   604         protected A9(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   605         protected A9(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   606                         { super(e, i, c, t); }

   607         protected A9 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   608                         { return new A9(e, i, c, t); }

   609         protected Object invoke_L9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) { return convert_L(invoker.<Object>invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   610         protected Object invoke_I9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) { return convert_I(invoker.<int   >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   611         protected Object invoke_J9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) { return convert_J(invoker.<long  >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   612         protected Object invoke_F9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) { return convert_F(invoker.<float >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   613         protected Object invoke_D9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) { return convert_D(invoker.<double>invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   614     }

   615     static class A10 extends Adapter {

   616         protected A10(MethodHandle entryPoint) { super(entryPoint); }  // to build prototype

   617         protected A10(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   618                         { super(e, i, c, t); }

   619         protected A10 makeInstance(MethodHandle e, MethodHandle i, MethodHandle c, MethodHandle t)

   620                         { return new A10(e, i, c, t); }

   621         protected Object invoke_L10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) { return convert_L(invoker.<Object>invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   622         protected Object invoke_I10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) { return convert_I(invoker.<int   >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   623         protected Object invoke_J10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) { return convert_J(invoker.<long  >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   624         protected Object invoke_F10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) { return convert_F(invoker.<float >invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   625         protected Object invoke_D10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) { return convert_D(invoker.<double>invoke(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   626     }

   627 }