1 /*

     2  * Copyright (c) 2008, 2011, Oracle and/or its affiliates. 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.  Oracle designates this

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

     9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package java.dyn;

    27 

    28 import sun.dyn.util.ValueConversions;

    29 import sun.dyn.util.Wrapper;

    30 import java.lang.reflect.*;

    31 import static java.dyn.MethodHandleStatics.*;

    32 import static java.dyn.MethodHandles.Lookup.IMPL_LOOKUP;

    33 

    34 /**

    35  * Adapters which mediate between incoming calls which are generic

    36  * and outgoing calls which are not.  Any call can be represented generically

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

    38  * <p>

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

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

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

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

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

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

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

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

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

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

    49  * @author jrose

    50  */

    51 class FromGeneric {

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

    53     private final MethodType targetType;

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

    55     private final MethodType internalType;

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

    57     private final Adapter adapter;

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

    59     private final MethodHandle entryPoint;

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

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

    62     private final MethodHandle unboxingInvoker;

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

    64     private final MethodHandle returnConversion;

    65 

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

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

    68      */

    69     private FromGeneric(MethodType targetType) {

    70         this.targetType = targetType;

    71         MethodType internalType0;

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

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

    74         if (ad != null) {

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

    76             // with no monkeying around with primitive types.

    77             this.internalType = internalType0;

    78             this.adapter = ad;

    79             this.entryPoint = ad.prototypeEntryPoint();

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

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

    82             return;

    83         }

    84 

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

    86         MethodType primsAsObj = targetType.form().primArgsAsBoxes();

    87         MethodType objArgsRawRet = primsAsObj.form().primsAsInts();

    88         if (objArgsRawRet != targetType)

    89             ad = findAdapter(internalType0 = objArgsRawRet);

    90         if (ad == null) {

    91             ad = buildAdapterFromBytecodes(internalType0 = targetType);

    92         }

    93         this.internalType = internalType0;

    94         this.adapter = ad;

    95         MethodType tepType = targetType.insertParameterTypes(0, adapter.getClass());

    96         this.entryPoint = ad.prototypeEntryPoint();

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

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

    99     }

   100 

   101     /**

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

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

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

   105      */

   106     private static MethodHandle computeReturnConversion(

   107             MethodType targetType, MethodType internalType) {

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

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

   110         Wrapper wrap = Wrapper.forBasicType(tret);

   111         if (!iret.isPrimitive()) {

   112             assert(iret == Object.class);

   113             return ValueConversions.identity();

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

   115             return ValueConversions.box(wrap, false);

   116         } else {

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

   118             return ValueConversions.boxRaw(wrap, false);

   119         }

   120     }

   121 

   122     /**

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

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

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

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

   127      * needs can be cached once per type.

   128      */

   129     private static MethodHandle computeUnboxingInvoker(

   130             MethodType targetType, MethodType internalType) {

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

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

   133         MethodHandle invoker = targetType.invokers().exactInvoker();

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

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

   136         MethodHandle fixArgs = MethodHandleImpl.convertArguments(

   137                                  invoker, Invokers.invokerType(fixArgsType),

   138                                  invoker.type(), null);

   139         if (fixArgs == null)

   140             throw new InternalError("bad fixArgs");

   141         // reinterpret the calling sequence as raw:

   142         MethodHandle retyper = AdapterMethodHandle.makeRetypeRaw(

   143                                         Invokers.invokerType(internalType), fixArgs);

   144         if (retyper == null)

   145             throw new InternalError("bad retyper");

   146         return retyper;

   147     }

   148 

   149     Adapter makeInstance(MethodHandle typedTarget) {

   150         MethodType type = typedTarget.type();

   151         if (type == targetType) {

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

   153         }

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

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

   156         MethodHandle invoker = computeUnboxingInvoker(type, internalType);

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

   158     }

   159 

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

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

   162      *  The return value is boxed if necessary.

   163      * @param genericType  the required type of the result

   164      * @param typedTarget the target

   165      * @return an adapter method handle

   166      */

   167     public static MethodHandle make(MethodHandle typedTarget) {

   168         MethodType type = typedTarget.type();

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

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

   171     }

   172 

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

   174     static FromGeneric of(MethodType type) {

   175         MethodTypeForm form = type.form();

   176         FromGeneric fromGen = form.fromGeneric;

   177         if (fromGen == null)

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

   179         return fromGen;

   180     }

   181 

   182     public String toString() {

   183         return "FromGeneric"+targetType;

   184     }

   185 

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

   187     static Adapter findAdapter(MethodType internalType) {

   188         MethodType entryType = internalType.generic();

   189         MethodTypeForm form = internalType.form();

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

   191         int argc = form.parameterCount();

   192         int lac = form.longPrimitiveParameterCount();

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

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

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

   196         String cname0 = rawReturn + argc;

   197         String cname1 = "A"       + argc;

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

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

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

   201         for (String cname : cnames) {

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

   203             if (acls == null)  continue;

   204             // see if it has the required invoke method

   205             MethodHandle entryPoint = null;

   206             try {

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

   208             } catch (ReflectiveOperationException ex) {

   209             }

   210             if (entryPoint == null)  continue;

   211             Constructor<? extends Adapter> ctor = null;

   212             try {

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

   214             } catch (NoSuchMethodException ex) {

   215             } catch (SecurityException ex) {

   216             }

   217             if (ctor == null)  continue;

   218             try {

   219                 // Produce an instance configured as a prototype.

   220                 return ctor.newInstance(entryPoint);

   221             } catch (IllegalArgumentException ex) {

   222             } catch (InvocationTargetException wex) {

   223                 Throwable ex = wex.getTargetException();

   224                 if (ex instanceof Error)  throw (Error)ex;

   225                 if (ex instanceof RuntimeException)  throw (RuntimeException)ex;

   226             } catch (InstantiationException ex) {

   227             } catch (IllegalAccessException ex) {

   228             }

   229         }

   230         return null;

   231     }

   232 

   233     static Adapter buildAdapterFromBytecodes(MethodType internalType) {

   234         throw new UnsupportedOperationException("NYI");

   235     }

   236 

   237     /**

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

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

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

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

   242      * converting the raw result into a boxed object.

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

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

   245      */

   246     static abstract class Adapter extends BoundMethodHandle {

   247         /*

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

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

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

   251          *   raw(R)=>Object convert;

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

   253          * }

   254          */

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

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

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

   258 

   259         @Override

   260         public String toString() {

   261             return addTypeString(target, this);

   262         }

   263 

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

   265         protected Adapter(MethodHandle entryPoint) {

   266             this(entryPoint, null, entryPoint, null);

   267             assert(isPrototype());

   268         }

   269         protected MethodHandle prototypeEntryPoint() {

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

   271             return convert;

   272         }

   273 

   274         protected Adapter(MethodHandle entryPoint,

   275                           MethodHandle invoker, MethodHandle convert, MethodHandle target) {

   276             super(entryPoint);

   277             this.invoker = invoker;

   278             this.convert = convert;

   279             this.target  = target;

   280         }

   281 

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

   283         protected abstract Adapter makeInstance(MethodHandle entryPoint,

   284                 MethodHandle invoker, MethodHandle convert, MethodHandle target);

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

   286 

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

   288         protected Object convert_L(Object result) throws Throwable { return convert.invokeExact(result); }

   289         protected Object convert_I(int    result) throws Throwable { return convert.invokeExact(result); }

   290         protected Object convert_J(long   result) throws Throwable { return convert.invokeExact(result); }

   291         protected Object convert_F(float  result) throws Throwable { return convert.invokeExact(result); }

   292         protected Object convert_D(double result) throws Throwable { return convert.invokeExact(result); }

   293 

   294         static private final String CLASS_PREFIX; // "java.dyn.FromGeneric$"

   295         static {

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

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

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

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

   300         }

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

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

   303             String cname = Adapter.CLASS_PREFIX + name;

   304             try {

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

   306             } catch (ClassNotFoundException ex) {

   307                 return null;

   308             } catch (ClassCastException ex) {

   309                 return null;

   310             }

   311         }

   312     }

   313 

   314     /* generated classes follow this pattern:

   315     static class xA2 extends Adapter {

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

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

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

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

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

   321         protected Object invoke_L2(Object a0, Object a1) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1)); }

   322         protected Object invoke_I2(Object a0, Object a1) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1)); }

   323         protected Object invoke_J2(Object a0, Object a1) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1)); }

   324         protected Object invoke_F2(Object a0, Object a1) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1)); }

   325         protected Object invoke_D2(Object a0, Object a1) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1)); }

   326     }

   327     // */

   328 

   329 /*

   330 : 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~

   331 //{{{

   332 import java.util.*;

   333 class genclasses {

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

   335     static String[] WRAPS = { "         ", "(Integer)", "(Long)   ", "(Float)  ", "(Double) " };

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

   337     static String[][] TEMPLATES = { {

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

   339         "    //@each-cat@",

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

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

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

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

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

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

   346         "        //@each-R@",

   347         "        protected Object invoke_@catN@(@Tvav@) throws Throwable { return convert_@Rc@((@R@)@W@invoker.invokeExact(target@av@)); }",

   348         "        //@end-R@",

   349         "    }",

   350     } };

   351     static final String NEWLINE_INDENT = "\n                ";

   352     enum VAR {

   353         cat, catN, R, Rc, W, av, Tvav, Ovav;

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

   355         public String binding;

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

   357             int nargs = nrefs + nints + nlongs;

   358             if (topLevel)

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

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

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

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

   363             VAR.W.binding = WRAPS[rcat];

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

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

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

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

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

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

   370                 Tv[i] = TYPES[tcat];

   371                 av[i] = arg(i);

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

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

   374             }

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

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

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

   378         }

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

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

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

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

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

   384             String res = sep+v[0];

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

   386             return res;

   387         }

   388         static String transform(String string) {

   389             for (VAR var : values())

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

   391             return string;

   392         }

   393     }

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

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

   396     }

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

   398         return stringsIn(strings, 0, pos);

   399     }

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

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

   402     }

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

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

   405     }

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

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

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

   409         }

   410     }

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

   412     static boolean ALL_ARG_TYPES, ALL_RETURN_TYPES;

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

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

   415         for (String[] template : TEMPLATES) {

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

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

   418             template = stringsAfter(template, forLinesLimit);

   419             for (String forLine : forLines)

   420                 expandTemplate(forLine, template);

   421         }

   422     }

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

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

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

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

   427         int pcur = 0;

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

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

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

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

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

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

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

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

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

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

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

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

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

   441                 if (ALL_ARG_TYPES)  break;

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

   443                 if (ALL_RETURN_TYPES)  break;

   444             }

   445         }

   446     }

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

   448         int nargs = nrefs + nints + nlongs;

   449         String cat = TCHARS[rcat] + nargs;

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

   451         return cat;

   452     }

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

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

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

   456                 int nrefs = nargs - nprims;

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

   458                 int nlongs = (isLong * nprims);

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

   460             }

   461         }

   462     }

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

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

   465         int nargs = nrefs + nints + nlongs;

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

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

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

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

   470             return;

   471         }

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

   473             String line = template[i];

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

   475                 // ignore

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

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

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

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

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

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

   482                 i = blockEnd-1; continue;

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

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

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

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

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

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

   489                 i = blockEnd-1; continue;

   490             } else {

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

   492             }

   493         }

   494     }

   495 }

   496 //}}} */

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

   498     static class A0 extends Adapter {

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

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

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

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

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

   504         protected Object invoke_L0() throws Throwable { return convert_L((Object)invoker.invokeExact(target)); }

   505         protected Object invoke_I0() throws Throwable { return convert_I((int)   invoker.invokeExact(target)); }

   506         protected Object invoke_J0() throws Throwable { return convert_J((long)  invoker.invokeExact(target)); }

   507         protected Object invoke_F0() throws Throwable { return convert_F((float) invoker.invokeExact(target)); }

   508         protected Object invoke_D0() throws Throwable { return convert_D((double)invoker.invokeExact(target)); }

   509     }

   510     static class A1 extends Adapter {

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

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

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

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

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

   516         protected Object invoke_L1(Object a0) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0)); }

   517         protected Object invoke_I1(Object a0) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0)); }

   518         protected Object invoke_J1(Object a0) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0)); }

   519         protected Object invoke_F1(Object a0) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0)); }

   520         protected Object invoke_D1(Object a0) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0)); }

   521     }

   522     static class A2 extends Adapter {

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

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

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

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

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

   528         protected Object invoke_L2(Object a0, Object a1) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1)); }

   529         protected Object invoke_I2(Object a0, Object a1) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1)); }

   530         protected Object invoke_J2(Object a0, Object a1) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1)); }

   531         protected Object invoke_F2(Object a0, Object a1) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1)); }

   532         protected Object invoke_D2(Object a0, Object a1) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1)); }

   533     }

   534     static class A3 extends Adapter {

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

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

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

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

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

   540         protected Object invoke_L3(Object a0, Object a1, Object a2) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1, a2)); }

   541         protected Object invoke_I3(Object a0, Object a1, Object a2) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1, a2)); }

   542         protected Object invoke_J3(Object a0, Object a1, Object a2) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1, a2)); }

   543         protected Object invoke_F3(Object a0, Object a1, Object a2) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1, a2)); }

   544         protected Object invoke_D3(Object a0, Object a1, Object a2) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1, a2)); }

   545     }

   546     static class A4 extends Adapter {

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

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

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

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

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

   552         protected Object invoke_L4(Object a0, Object a1, Object a2, Object a3) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1, a2, a3)); }

   553         protected Object invoke_I4(Object a0, Object a1, Object a2, Object a3) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1, a2, a3)); }

   554         protected Object invoke_J4(Object a0, Object a1, Object a2, Object a3) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1, a2, a3)); }

   555         protected Object invoke_F4(Object a0, Object a1, Object a2, Object a3) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1, a2, a3)); }

   556         protected Object invoke_D4(Object a0, Object a1, Object a2, Object a3) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1, a2, a3)); }

   557     }

   558     static class A5 extends Adapter {

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

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

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

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

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

   564         protected Object invoke_L5(Object a0, Object a1, Object a2, Object a3, Object a4) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1, a2, a3, a4)); }

   565         protected Object invoke_I5(Object a0, Object a1, Object a2, Object a3, Object a4) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1, a2, a3, a4)); }

   566         protected Object invoke_J5(Object a0, Object a1, Object a2, Object a3, Object a4) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1, a2, a3, a4)); }

   567         protected Object invoke_F5(Object a0, Object a1, Object a2, Object a3, Object a4) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1, a2, a3, a4)); }

   568         protected Object invoke_D5(Object a0, Object a1, Object a2, Object a3, Object a4) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1, a2, a3, a4)); }

   569     }

   570     static class A6 extends Adapter {

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

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

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

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

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

   576         protected Object invoke_L6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5)); }

   577         protected Object invoke_I6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1, a2, a3, a4, a5)); }

   578         protected Object invoke_J6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1, a2, a3, a4, a5)); }

   579         protected Object invoke_F6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1, a2, a3, a4, a5)); }

   580         protected Object invoke_D6(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5)); }

   581     }

   582     static class A7 extends Adapter {

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

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

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

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

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

   588         protected Object invoke_L7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6)); }

   589         protected Object invoke_I7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6)); }

   590         protected Object invoke_J7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6)); }

   591         protected Object invoke_F7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6)); }

   592         protected Object invoke_D7(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6)); }

   593     }

   594     static class A8 extends Adapter {

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

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

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

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

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

   600         protected Object invoke_L8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   601         protected Object invoke_I8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   602         protected Object invoke_J8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   603         protected Object invoke_F8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   604         protected Object invoke_D8(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7)); }

   605     }

   606     static class A9 extends Adapter {

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

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

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

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

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

   612         protected Object invoke_L9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   613         protected Object invoke_I9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   614         protected Object invoke_J9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   615         protected Object invoke_F9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   616         protected Object invoke_D9(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8)); }

   617     }

   618     static class A10 extends Adapter {

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

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

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

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

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

   624         protected Object invoke_L10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) throws Throwable { return convert_L((Object)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   625         protected Object invoke_I10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) throws Throwable { return convert_I((int)   invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   626         protected Object invoke_J10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) throws Throwable { return convert_J((long)  invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   627         protected Object invoke_F10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) throws Throwable { return convert_F((float) invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   628         protected Object invoke_D10(Object a0, Object a1, Object a2, Object a3, Object a4, Object a5, Object a6, Object a7, Object a8, Object a9) throws Throwable { return convert_D((double)invoker.invokeExact(target, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)); }

   629     }

   630 }