1/* 2 * Copyright (c) 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/** 25 * @test 26 * @bug 6998541 27 * @summary JSR 292 implement missing return-type conversion for OP_RETYPE_RAW 28 * 29 * @run main/othervm -Xbatch 30 * -XX:+UnlockDiagnosticVMOptions -XX:ScavengeRootsInCode=2 31 * -DTest6998541.N=100000 -DTest6998541.KIND=cast Test6998541 32 * @run main/othervm -Xbatch 33 * -XX:+UnlockDiagnosticVMOptions -XX:ScavengeRootsInCode=2 34 * -DTest6998541.N=100000 -DTest6998541.KIND=normal Test6998541 35 */ 36 37import java.util.*; 38 39import java.lang.invoke.*; 40import static java.lang.invoke.MethodHandles.*; 41 42public class Test6998541 { 43 private static final Class CLASS = Test6998541.class; 44 private static final String NAME = "identity"; 45 private static final int N = Math.max(2, Integer.getInteger(CLASS.getSimpleName()+".N", 10000)); 46 private static final String KIND = System.getProperty(CLASS.getSimpleName()+".KIND", "cast"); 47 private static final int BITS = 0x00000201; 48 49 private static final boolean DO_CASTS = !KIND.equals("normal"); 50 51 public static void main(String[] args) throws Throwable { 52 System.out.println("KIND="+KIND+" DO_CASTS="+DO_CASTS+" N="+N); 53 doboolean(); 54 dobyte(); 55 dochar(); 56 doshort(); 57 doint(); 58 dolong(); 59 dofloat(); 60 dodouble(); 61 dovoid(); 62 } 63 64 private static void doboolean() throws Throwable { 65 for (int i = 0; i < N; i++) { 66 boolean2prim(false); 67 boolean2prim(true); 68 } 69 boolean2prim_invalid(true); 70 } 71 private static void dobyte() throws Throwable { 72 byte x = Byte.MIN_VALUE; 73 for (int i = 0; i < N; i++, x++) 74 byte2prim(x); 75 byte2prim_invalid(x); 76 } 77 private static void dochar() throws Throwable { 78 char x = Character.MIN_VALUE; 79 for (int i = 0; i < N; i++, x++) 80 char2prim(x); 81 char2prim_invalid(x); 82 } 83 private static void doshort() throws Throwable { 84 short x = Short.MIN_VALUE; 85 for (int i = 0; i < N; i++, x++) 86 short2prim(x); 87 short2prim_invalid(x); 88 } 89 private static void doint() throws Throwable { 90 int x = Integer.MIN_VALUE; 91 int D = Integer.MAX_VALUE / (N / 2) | BITS; 92 for (int i = 0; i < N; i++, x += D) { 93 int2prim(x); 94 } 95 int2prim_invalid(x); 96 } 97 private static void dolong() throws Throwable { 98 long x = Long.MIN_VALUE; 99 long D = Long.MAX_VALUE / ((long) (N / 2)) | BITS; 100 for (int i = 0; i < N; i++, x += D) 101 long2prim(x); 102 long2prim_invalid(x); 103 } 104 private static void dofloat() throws Throwable { 105 float x = Float.MIN_VALUE; 106 float D = Float.MAX_VALUE / ((float) (N / 2)); 107 for (int i = 0; i < N; i++, x += D) 108 float2prim(x); 109 float2prim_invalid(x); 110 } 111 private static void dodouble() throws Throwable { 112 double x = Double.MIN_VALUE; 113 double D = Double.MAX_VALUE / ((double) (N / 2)); 114 for (int i = 0; i < N; i++, x += D) 115 double2prim(x); 116 double2prim_invalid(x); 117 } 118 private static void dovoid() throws Throwable { 119 for (int i = 0; i < N; i++) { 120 void2prim(i); 121 } 122 void2prim_invalid(0); 123 // do the other direction here also: 124 for (int i = 0; i < N; i++) { 125 prim2void(i); 126 } 127 prim2void_invalid(0); 128 } 129 130 private static void assertEquals(Object o, Object o2) { 131 if (!o.equals(o2)) 132 throw new AssertionError("expected: " + o + ", found: " + o2); 133 } 134 private static void fail() { 135 throw new AssertionError(); 136 } 137 138 private static final MethodHandles.Lookup lookup = MethodHandles.lookup(); 139 140 private static MethodHandle mh(Class ret, Class... args) { 141 try { 142 MethodType mt = MethodType.methodType(ret, args); 143 Class lookupRet = (args.length == 0 ? void.class : args[0]); 144 MethodHandle mh = lookup.findStatic(CLASS, NAME, mt.changeReturnType(lookupRet)); 145 if (DO_CASTS) 146 return MethodHandles.explicitCastArguments(mh, mt); 147 if (canDoAsType(mh.type(), mt)) 148 return mh.asType(mt); 149 try { 150 mh.asType(mt); 151 throw new AssertionError("asType should not succeed: "+mh+" => "+mt); 152 } catch (WrongMethodTypeException ex) { 153 // this was a required WMTE 154 return mh.asType(mt.generic()).asType(mt); 155 } 156 } catch (ReflectiveOperationException e) { 157 throw new RuntimeException(e); 158 } 159 } 160 private static final Class<?>[] NUMERIC_TYPE_WIDENING_ORDER = { 161 byte.class, short.class, int.class, long.class, float.class, double.class 162 }; 163 private static boolean canDoAsType(Class<?> src, Class<?> dst) { 164 if (src == dst) return true; 165 if (dst == void.class) return true; 166 if (src == void.class) return true; // allow void->zero 167 if (!src.isPrimitive() || !dst.isPrimitive()) return true; 168 // primitive conversion works for asType only when it's widening 169 if (src == boolean.class || dst == boolean.class) return false; 170 if (dst == char.class) return false; 171 if (src == char.class) src = int.class; // can widen char to int 172 for (Class<?> ntype : NUMERIC_TYPE_WIDENING_ORDER) { 173 if (src == ntype) return true; 174 if (dst == ntype) return false; 175 } 176 throw new AssertionError("should not reach here: "+src+", "+dst); 177 } 178 private static boolean canDoAsType(MethodType mt0, MethodType mt1) { 179 Class<?> rt0 = mt0.returnType(); 180 Class<?> rt1 = mt1.returnType(); 181 if (!canDoAsType(rt0, rt1)) return false; 182 int argc = mt0.parameterCount(); 183 if (argc != mt1.parameterCount()) return false; 184 for (int i = 0; i < argc; i++) { 185 if (!canDoAsType(mt1.parameterType(i), mt0.parameterType(i))) 186 return false; 187 } 188 return true; 189 } 190 191 private static MethodHandle mh_z(Class ret) { return mh(ret, boolean.class); } 192 193 private static final MethodHandle mh_zz = mh_z(boolean.class); 194 private static final MethodHandle mh_bz = mh_z(byte.class ); 195 private static final MethodHandle mh_cz = mh_z(char.class ); 196 private static final MethodHandle mh_sz = mh_z(short.class ); 197 private static final MethodHandle mh_iz = mh_z(int.class ); 198 private static final MethodHandle mh_jz = mh_z(long.class ); 199 private static final MethodHandle mh_fz = mh_z(float.class ); 200 private static final MethodHandle mh_dz = mh_z(double.class ); 201 202 private static void boolean2prim(boolean x) throws Throwable { 203 int i = x ? 1 : 0; 204 assertEquals( x, (boolean) mh_zz.invokeExact(x)); // boolean -> boolean 205 if (!DO_CASTS) return; 206 assertEquals((byte) i, (byte) mh_bz.invokeExact(x)); // boolean -> byte 207 assertEquals((char) i, (char) mh_cz.invokeExact(x)); // boolean -> char 208 assertEquals((short) i, (short) mh_sz.invokeExact(x)); // boolean -> short 209 assertEquals((int) i, (int) mh_iz.invokeExact(x)); // boolean -> int 210 assertEquals((long) i, (long) mh_jz.invokeExact(x)); // boolean -> long 211 assertEquals((float) i, (float) mh_fz.invokeExact(x)); // boolean -> float 212 assertEquals((double) i, (double) mh_dz.invokeExact(x)); // boolean -> double 213 } 214 private static void boolean2prim_invalid(boolean x) throws Throwable { 215 if (DO_CASTS) return; 216 try { byte y = (byte) mh_bz.invokeExact(x); fail(); } catch (ClassCastException expected) {} // boolean -> byte 217 try { char y = (char) mh_cz.invokeExact(x); fail(); } catch (ClassCastException expected) {} // boolean -> char 218 try { short y = (short) mh_sz.invokeExact(x); fail(); } catch (ClassCastException expected) {} // boolean -> short 219 try { int y = (int) mh_iz.invokeExact(x); fail(); } catch (ClassCastException expected) {} // boolean -> int 220 try { long y = (long) mh_jz.invokeExact(x); fail(); } catch (ClassCastException expected) {} // boolean -> long 221 try { float y = (float) mh_fz.invokeExact(x); fail(); } catch (ClassCastException expected) {} // boolean -> float 222 try { double y = (double) mh_dz.invokeExact(x); fail(); } catch (ClassCastException expected) {} // boolean -> double 223 } 224 225 private static MethodHandle mh_b(Class ret) { return mh(ret, byte.class); } 226 227 private static final MethodHandle mh_zb = mh_b(boolean.class); 228 private static final MethodHandle mh_bb = mh_b(byte.class ); 229 private static final MethodHandle mh_cb = mh_b(char.class ); 230 private static final MethodHandle mh_sb = mh_b(short.class ); 231 private static final MethodHandle mh_ib = mh_b(int.class ); 232 private static final MethodHandle mh_jb = mh_b(long.class ); 233 private static final MethodHandle mh_fb = mh_b(float.class ); 234 private static final MethodHandle mh_db = mh_b(double.class ); 235 236 private static void byte2prim(byte x) throws Throwable { 237 assertEquals((byte) x, (byte) mh_bb.invokeExact(x)); // byte -> byte 238 assertEquals((short) x, (short) mh_sb.invokeExact(x)); // byte -> short 239 assertEquals((int) x, (int) mh_ib.invokeExact(x)); // byte -> int 240 assertEquals((long) x, (long) mh_jb.invokeExact(x)); // byte -> long 241 assertEquals((float) x, (float) mh_fb.invokeExact(x)); // byte -> float 242 assertEquals((double) x, (double) mh_db.invokeExact(x)); // byte -> double 243 if (!DO_CASTS) return; 244 boolean z = ((x & 1) != 0); 245 assertEquals((char) x, (char) mh_cb.invokeExact(x)); // byte -> char 246 assertEquals((boolean) z, (boolean) mh_zb.invokeExact(x)); // byte -> boolean 247 } 248 private static void byte2prim_invalid(byte x) throws Throwable { 249 if (DO_CASTS) return; 250 try { char y = (char) mh_cb.invokeExact(x); fail(); } catch (ClassCastException expected) {} // byte -> char 251 try { boolean y = (boolean) mh_zb.invokeExact(x); fail(); } catch (ClassCastException expected) {} // byte -> boolean 252 } 253 254 private static MethodHandle mh_c(Class ret) { return mh(ret, char.class); } 255 256 private static final MethodHandle mh_zc = mh_c(boolean.class); 257 private static final MethodHandle mh_bc = mh_c(byte.class ); 258 private static final MethodHandle mh_cc = mh_c(char.class ); 259 private static final MethodHandle mh_sc = mh_c(short.class ); 260 private static final MethodHandle mh_ic = mh_c(int.class ); 261 private static final MethodHandle mh_jc = mh_c(long.class ); 262 private static final MethodHandle mh_fc = mh_c(float.class ); 263 private static final MethodHandle mh_dc = mh_c(double.class ); 264 265 private static void char2prim(char x) throws Throwable { 266 assertEquals((char) x, (char) mh_cc.invokeExact(x)); // char -> char 267 assertEquals((int) x, (int) mh_ic.invokeExact(x)); // char -> int 268 assertEquals((long) x, (long) mh_jc.invokeExact(x)); // char -> long 269 assertEquals((float) x, (float) mh_fc.invokeExact(x)); // char -> float 270 assertEquals((double) x, (double) mh_dc.invokeExact(x)); // char -> double 271 if (!DO_CASTS) return; 272 boolean z = ((x & 1) != 0); 273 assertEquals((boolean) z, (boolean) mh_zc.invokeExact(x)); // char -> boolean 274 assertEquals((byte) x, (byte) mh_bc.invokeExact(x)); // char -> byte 275 assertEquals((short) x, (short) mh_sc.invokeExact(x)); // char -> short 276 } 277 private static void char2prim_invalid(char x) throws Throwable { 278 if (DO_CASTS) return; 279 try { boolean y = (boolean) mh_zc.invokeExact(x); fail(); } catch (ClassCastException expected) {} // char -> boolean 280 try { byte y = (byte) mh_bc.invokeExact(x); fail(); } catch (ClassCastException expected) {} // char -> byte 281 try { short y = (short) mh_sc.invokeExact(x); fail(); } catch (ClassCastException expected) {} // char -> short 282 } 283 284 private static MethodHandle mh_s(Class ret) { return mh(ret, short.class); } 285 286 private static final MethodHandle mh_zs = mh_s(boolean.class); 287 private static final MethodHandle mh_bs = mh_s(byte.class ); 288 private static final MethodHandle mh_cs = mh_s(char.class ); 289 private static final MethodHandle mh_ss = mh_s(short.class ); 290 private static final MethodHandle mh_is = mh_s(int.class ); 291 private static final MethodHandle mh_js = mh_s(long.class ); 292 private static final MethodHandle mh_fs = mh_s(float.class ); 293 private static final MethodHandle mh_ds = mh_s(double.class ); 294 295 private static void short2prim(short x) throws Throwable { 296 assertEquals((short) x, (short) mh_ss.invokeExact(x)); // short -> short 297 assertEquals((int) x, (int) mh_is.invokeExact(x)); // short -> int 298 assertEquals((long) x, (long) mh_js.invokeExact(x)); // short -> long 299 assertEquals((float) x, (float) mh_fs.invokeExact(x)); // short -> float 300 assertEquals((double) x, (double) mh_ds.invokeExact(x)); // short -> double 301 if (!DO_CASTS) return; 302 boolean z = ((x & 1) != 0); 303 assertEquals((boolean) z, (boolean) mh_zs.invokeExact(x)); // short -> boolean 304 assertEquals((byte) x, (byte) mh_bs.invokeExact(x)); // short -> byte 305 assertEquals((char) x, (char) mh_cs.invokeExact(x)); // short -> char 306 } 307 private static void short2prim_invalid(short x) throws Throwable { 308 if (DO_CASTS) return; 309 try { boolean y = (boolean) mh_zs.invokeExact(x); fail(); } catch (ClassCastException expected) {} // short -> boolean 310 try { byte y = (byte) mh_bs.invokeExact(x); fail(); } catch (ClassCastException expected) {} // short -> byte 311 try { char y = (char) mh_cs.invokeExact(x); fail(); } catch (ClassCastException expected) {} // short -> char 312 } 313 314 private static MethodHandle mh_i(Class ret) { return mh(ret, int.class); } 315 316 private static final MethodHandle mh_zi = mh_i(boolean.class); 317 private static final MethodHandle mh_bi = mh_i(byte.class ); 318 private static final MethodHandle mh_ci = mh_i(char.class ); 319 private static final MethodHandle mh_si = mh_i(short.class ); 320 private static final MethodHandle mh_ii = mh_i(int.class ); 321 private static final MethodHandle mh_ji = mh_i(long.class ); 322 private static final MethodHandle mh_fi = mh_i(float.class ); 323 private static final MethodHandle mh_di = mh_i(double.class ); 324 325 private static void int2prim(int x) throws Throwable { 326 assertEquals((int) x, (int) mh_ii.invokeExact(x)); // int -> int 327 assertEquals((long) x, (long) mh_ji.invokeExact(x)); // int -> long 328 assertEquals((float) x, (float) mh_fi.invokeExact(x)); // int -> float 329 assertEquals((double) x, (double) mh_di.invokeExact(x)); // int -> double 330 if (!DO_CASTS) return; 331 boolean z = ((x & 1) != 0); 332 assertEquals((boolean) z, (boolean) mh_zi.invokeExact(x)); // int -> boolean 333 assertEquals((byte) x, (byte) mh_bi.invokeExact(x)); // int -> byte 334 assertEquals((char) x, (char) mh_ci.invokeExact(x)); // int -> char 335 assertEquals((short) x, (short) mh_si.invokeExact(x)); // int -> short 336 } 337 private static void int2prim_invalid(int x) throws Throwable { 338 if (DO_CASTS) return; 339 try { boolean y = (boolean) mh_zi.invokeExact(x); fail(); } catch (ClassCastException expected) {} // int -> boolean 340 try { byte y = (byte) mh_bi.invokeExact(x); fail(); } catch (ClassCastException expected) {} // int -> byte 341 try { char y = (char) mh_ci.invokeExact(x); fail(); } catch (ClassCastException expected) {} // int -> char 342 try { short y = (short) mh_si.invokeExact(x); fail(); } catch (ClassCastException expected) {} // int -> short 343 } 344 345 private static MethodHandle mh_j(Class ret) { return mh(ret, long.class); } 346 347 private static final MethodHandle mh_zj = mh_j(boolean.class); 348 private static final MethodHandle mh_bj = mh_j(byte.class ); 349 private static final MethodHandle mh_cj = mh_j(char.class ); 350 private static final MethodHandle mh_sj = mh_j(short.class ); 351 private static final MethodHandle mh_ij = mh_j(int.class ); 352 private static final MethodHandle mh_jj = mh_j(long.class ); 353 private static final MethodHandle mh_fj = mh_j(float.class ); 354 private static final MethodHandle mh_dj = mh_j(double.class ); 355 356 private static void long2prim(long x) throws Throwable { 357 assertEquals((long) x, (long) mh_jj.invokeExact(x)); // long -> long 358 assertEquals((float) x, (float) mh_fj.invokeExact(x)); // long -> float 359 assertEquals((double) x, (double) mh_dj.invokeExact(x)); // long -> double 360 if (!DO_CASTS) return; 361 boolean z = ((x & 1) != 0); 362 assertEquals((boolean)z, (boolean) mh_zj.invokeExact(x)); // long -> boolean 363 assertEquals((byte) x, (byte) mh_bj.invokeExact(x)); // long -> byte 364 assertEquals((char) x, (char) mh_cj.invokeExact(x)); // long -> char 365 assertEquals((short) x, (short) mh_sj.invokeExact(x)); // long -> short 366 assertEquals((int) x, (int) mh_ij.invokeExact(x)); // long -> int 367 } 368 private static void long2prim_invalid(long x) throws Throwable { 369 if (DO_CASTS) return; 370 try { boolean y = (boolean) mh_zj.invokeExact(x); fail(); } catch (ClassCastException expected) {} // long -> boolean 371 try { byte y = (byte) mh_bj.invokeExact(x); fail(); } catch (ClassCastException expected) {} // long -> byte 372 try { char y = (char) mh_cj.invokeExact(x); fail(); } catch (ClassCastException expected) {} // long -> char 373 try { short y = (short) mh_sj.invokeExact(x); fail(); } catch (ClassCastException expected) {} // long -> short 374 try { int y = (int) mh_ij.invokeExact(x); fail(); } catch (ClassCastException expected) {} // long -> int 375 } 376 377 private static MethodHandle mh_f(Class ret) { return mh(ret, float.class); } 378 379 private static final MethodHandle mh_zf = mh_f(boolean.class); 380 private static final MethodHandle mh_bf = mh_f(byte.class ); 381 private static final MethodHandle mh_cf = mh_f(char.class ); 382 private static final MethodHandle mh_sf = mh_f(short.class ); 383 private static final MethodHandle mh_if = mh_f(int.class ); 384 private static final MethodHandle mh_jf = mh_f(long.class ); 385 private static final MethodHandle mh_ff = mh_f(float.class ); 386 private static final MethodHandle mh_df = mh_f(double.class ); 387 388 private static void float2prim(float x) throws Throwable { 389 assertEquals((float) x, (float) mh_ff.invokeExact(x)); // float -> float 390 assertEquals((double) x, (double) mh_df.invokeExact(x)); // float -> double 391 if (!DO_CASTS) return; 392 boolean z = (((byte) x & 1) != 0); 393 assertEquals((boolean) z, (boolean) mh_zf.invokeExact(x)); // float -> boolean 394 assertEquals((byte) x, (byte) mh_bf.invokeExact(x)); // float -> byte 395 assertEquals((char) x, (char) mh_cf.invokeExact(x)); // float -> char 396 assertEquals((short) x, (short) mh_sf.invokeExact(x)); // float -> short 397 assertEquals((int) x, (int) mh_if.invokeExact(x)); // float -> int 398 assertEquals((long) x, (long) mh_jf.invokeExact(x)); // float -> long 399 } 400 private static void float2prim_invalid(float x) throws Throwable { 401 if (DO_CASTS) return; 402 try { boolean y = (boolean) mh_zf.invokeExact(x); fail(); } catch (ClassCastException expected) {} // float -> boolean 403 try { byte y = (byte) mh_bf.invokeExact(x); fail(); } catch (ClassCastException expected) {} // float -> byte 404 try { char y = (char) mh_cf.invokeExact(x); fail(); } catch (ClassCastException expected) {} // float -> char 405 try { short y = (short) mh_sf.invokeExact(x); fail(); } catch (ClassCastException expected) {} // float -> short 406 try { int y = (int) mh_if.invokeExact(x); fail(); } catch (ClassCastException expected) {} // float -> int 407 try { long y = (long) mh_jf.invokeExact(x); fail(); } catch (ClassCastException expected) {} // float -> long 408 } 409 410 private static MethodHandle mh_d(Class ret) { return mh(ret, double.class); } 411 412 private static final MethodHandle mh_zd = mh_d(boolean.class); 413 private static final MethodHandle mh_bd = mh_d(byte.class ); 414 private static final MethodHandle mh_cd = mh_d(char.class ); 415 private static final MethodHandle mh_sd = mh_d(short.class ); 416 private static final MethodHandle mh_id = mh_d(int.class ); 417 private static final MethodHandle mh_jd = mh_d(long.class ); 418 private static final MethodHandle mh_fd = mh_d(float.class ); 419 private static final MethodHandle mh_dd = mh_d(double.class ); 420 421 private static void double2prim(double x) throws Throwable { 422 assertEquals((double) x, (double) mh_dd.invokeExact(x)); // double -> double 423 if (!DO_CASTS) return; 424 boolean z = (((byte) x & 1) != 0); 425 assertEquals((boolean) z, (boolean) mh_zd.invokeExact(x)); // double -> boolean 426 assertEquals((byte) x, (byte) mh_bd.invokeExact(x)); // double -> byte 427 assertEquals((char) x, (char) mh_cd.invokeExact(x)); // double -> char 428 assertEquals((short) x, (short) mh_sd.invokeExact(x)); // double -> short 429 assertEquals((int) x, (int) mh_id.invokeExact(x)); // double -> int 430 assertEquals((long) x, (long) mh_jd.invokeExact(x)); // double -> long 431 assertEquals((float) x, (float) mh_fd.invokeExact(x)); // double -> float 432 } 433 private static void double2prim_invalid(double x) throws Throwable { 434 if (DO_CASTS) return; 435 try { boolean y = (boolean) mh_zd.invokeExact(x); fail(); } catch (ClassCastException expected) {} // double -> boolean 436 try { byte y = (byte) mh_bd.invokeExact(x); fail(); } catch (ClassCastException expected) {} // double -> byte 437 try { char y = (char) mh_cd.invokeExact(x); fail(); } catch (ClassCastException expected) {} // double -> char 438 try { short y = (short) mh_sd.invokeExact(x); fail(); } catch (ClassCastException expected) {} // double -> short 439 try { int y = (int) mh_id.invokeExact(x); fail(); } catch (ClassCastException expected) {} // double -> int 440 try { long y = (long) mh_jd.invokeExact(x); fail(); } catch (ClassCastException expected) {} // double -> long 441 try { float y = (float) mh_fd.invokeExact(x); fail(); } catch (ClassCastException expected) {} // double -> float 442 } 443 444 private static final MethodHandle mh_zv = mh(boolean.class); 445 private static final MethodHandle mh_bv = mh(byte.class ); 446 private static final MethodHandle mh_cv = mh(char.class ); 447 private static final MethodHandle mh_sv = mh(short.class ); 448 private static final MethodHandle mh_iv = mh(int.class ); 449 private static final MethodHandle mh_jv = mh(long.class ); 450 private static final MethodHandle mh_fv = mh(float.class ); 451 private static final MethodHandle mh_dv = mh(double.class ); 452 453 private static void void2prim(int i) throws Throwable { 454 assertEquals( false, (boolean) mh_zv.invokeExact()); // void -> boolean 455 assertEquals((byte) 0, (byte) mh_bv.invokeExact()); // void -> byte 456 assertEquals((char) 0, (char) mh_cv.invokeExact()); // void -> char 457 assertEquals((short) 0, (short) mh_sv.invokeExact()); // void -> short 458 assertEquals( 0, (int) mh_iv.invokeExact()); // void -> int 459 assertEquals( 0L, (long) mh_jv.invokeExact()); // void -> long 460 assertEquals( 0.0f, (float) mh_fv.invokeExact()); // void -> float 461 assertEquals( 0.0d, (double) mh_dv.invokeExact()); // void -> double 462 } 463 464 private static void void2prim_invalid(double x) throws Throwable { 465 // no cases 466 } 467 468 private static MethodHandle mh_v(Class arg) { return mh(void.class, arg); } 469 470 private static final MethodHandle mh_vz = mh_v(boolean.class); 471 private static final MethodHandle mh_vb = mh_v(byte.class ); 472 private static final MethodHandle mh_vc = mh_v(char.class ); 473 private static final MethodHandle mh_vs = mh_v(short.class ); 474 private static final MethodHandle mh_vi = mh_v(int.class ); 475 private static final MethodHandle mh_vj = mh_v(long.class ); 476 private static final MethodHandle mh_vf = mh_v(float.class ); 477 private static final MethodHandle mh_vd = mh_v(double.class ); 478 479 private static void prim2void(int x) throws Throwable { 480 boolean z = ((x & 1) != 0); 481 mh_vz.invokeExact( z); // boolean -> void 482 mh_vb.invokeExact((byte) x); // byte -> void 483 mh_vc.invokeExact((char) x); // char -> void 484 mh_vs.invokeExact((short) x); // short -> void 485 mh_vi.invokeExact((int) x); // int -> void 486 mh_vj.invokeExact((long) x); // long -> void 487 mh_vf.invokeExact((float) x); // float -> void 488 mh_vd.invokeExact((double) x); // double -> void 489 } 490 491 private static void prim2void_invalid(int x) throws Throwable { 492 // no cases 493 } 494 495 private static boolean identity(boolean v) { return v; } 496 private static byte identity(byte v) { return v; } 497 private static char identity(char v) { return v; } 498 private static short identity(short v) { return v; } 499 private static int identity(int v) { return v; } 500 private static long identity(long v) { return v; } 501 private static float identity(float v) { return v; } 502 private static double identity(double v) { return v; } 503 private static void identity() {} 504} 505