1 /* 2 * Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.objects; 27 28 import static jdk.nashorn.internal.lookup.Lookup.MH; 29 import static jdk.nashorn.internal.runtime.ECMAErrors.referenceError; 30 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError; 31 import static jdk.nashorn.internal.runtime.JSType.isString; 32 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED; 33 34 import java.io.IOException; 35 import java.io.PrintWriter; 36 import java.lang.invoke.MethodHandle; 37 import java.lang.invoke.MethodHandles; 38 import java.lang.invoke.MethodType; 39 import java.lang.invoke.SwitchPoint; 40 import java.lang.reflect.Field; 41 import java.util.ArrayList; 42 import java.util.Arrays; 43 import java.util.List; 44 import java.util.Map; 45 import java.util.Objects; 46 import java.util.concurrent.Callable; 47 import java.util.concurrent.ConcurrentHashMap; 48 import javax.script.ScriptContext; 49 import javax.script.ScriptEngine; 50 import jdk.internal.dynalink.CallSiteDescriptor; 51 import jdk.internal.dynalink.linker.GuardedInvocation; 52 import jdk.internal.dynalink.linker.LinkRequest; 53 import jdk.nashorn.api.scripting.ClassFilter; 54 import jdk.nashorn.api.scripting.ScriptObjectMirror; 55 import jdk.nashorn.internal.lookup.Lookup; 56 import jdk.nashorn.internal.objects.annotations.Attribute; 57 import jdk.nashorn.internal.objects.annotations.Getter; 58 import jdk.nashorn.internal.objects.annotations.Property; 59 import jdk.nashorn.internal.objects.annotations.ScriptClass; 60 import jdk.nashorn.internal.objects.annotations.Setter; 61 import jdk.nashorn.internal.runtime.Context; 62 import jdk.nashorn.internal.runtime.ECMAErrors; 63 import jdk.nashorn.internal.runtime.FindProperty; 64 import jdk.nashorn.internal.runtime.GlobalConstants; 65 import jdk.nashorn.internal.runtime.GlobalFunctions; 66 import jdk.nashorn.internal.runtime.JSType; 67 import jdk.nashorn.internal.runtime.NativeJavaPackage; 68 import jdk.nashorn.internal.runtime.PropertyDescriptor; 69 import jdk.nashorn.internal.runtime.PropertyMap; 70 import jdk.nashorn.internal.runtime.Scope; 71 import jdk.nashorn.internal.runtime.ScriptEnvironment; 72 import jdk.nashorn.internal.runtime.ScriptFunction; 73 import jdk.nashorn.internal.runtime.ScriptObject; 74 import jdk.nashorn.internal.runtime.ScriptRuntime; 75 import jdk.nashorn.internal.runtime.ScriptingFunctions; 76 import jdk.nashorn.internal.runtime.Specialization; 77 import jdk.nashorn.internal.runtime.arrays.ArrayData; 78 import jdk.nashorn.internal.runtime.linker.Bootstrap; 79 import jdk.nashorn.internal.runtime.linker.InvokeByName; 80 import jdk.nashorn.internal.runtime.linker.NashornCallSiteDescriptor; 81 import jdk.nashorn.internal.runtime.regexp.RegExpResult; 82 import jdk.nashorn.internal.scripts.JD; 83 import jdk.nashorn.internal.scripts.JO; 84 import jdk.nashorn.tools.ShellFunctions; 85 86 /** 87 * Representation of global scope. 88 */ 89 @ScriptClass("Global") 90 public final class Global extends ScriptObject implements Scope { 91 // Placeholder value used in place of a location property (__FILE__, __DIR__, __LINE__) 92 private static final Object LOCATION_PROPERTY_PLACEHOLDER = new Object(); 93 private final InvokeByName TO_STRING = new InvokeByName("toString", ScriptObject.class); 94 private final InvokeByName VALUE_OF = new InvokeByName("valueOf", ScriptObject.class); 95 96 // placeholder value for lazily initialized global objects 97 private static final Object LAZY_SENTINEL = new Object(); 98 99 /** 100 * Optimistic builtin names that require switchpoint invalidation 101 * upon assignment. Overly conservative, but works for now, to avoid 102 * any complicated scope checks and especially heavy weight guards 103 * like 104 * 105 * <pre> 106 * public boolean setterGuard(final Object receiver) { 107 * final Global global = Global.instance(); 108 * final ScriptObject sobj = global.getFunctionPrototype(); 109 * final Object apply = sobj.get("apply"); 110 * return apply == receiver; 111 * } 112 * </pre> 113 * 114 * Naturally, checking for builtin classes like NativeFunction is cheaper, 115 * it's when you start adding property checks for said builtins you have 116 * problems with guard speed. 117 */ 118 119 /** Nashorn extension: arguments array */ 120 @Property(attributes = Attribute.NOT_ENUMERABLE | Attribute.NOT_CONFIGURABLE) 121 public Object arguments; 122 123 /** ECMA 15.1.2.2 parseInt (string , radix) */ 124 @Property(attributes = Attribute.NOT_ENUMERABLE) 125 public Object parseInt; 126 127 /** ECMA 15.1.2.3 parseFloat (string) */ 128 @Property(attributes = Attribute.NOT_ENUMERABLE) 129 public Object parseFloat; 130 131 /** ECMA 15.1.2.4 isNaN (number) */ 132 @Property(attributes = Attribute.NOT_ENUMERABLE) 133 public Object isNaN; 134 135 /** ECMA 15.1.2.5 isFinite (number) */ 136 @Property(attributes = Attribute.NOT_ENUMERABLE) 137 public Object isFinite; 138 139 /** ECMA 15.1.3.3 encodeURI */ 140 @Property(attributes = Attribute.NOT_ENUMERABLE) 141 public Object encodeURI; 142 143 /** ECMA 15.1.3.4 encodeURIComponent */ 144 @Property(attributes = Attribute.NOT_ENUMERABLE) 145 public Object encodeURIComponent; 146 147 /** ECMA 15.1.3.1 decodeURI */ 148 @Property(attributes = Attribute.NOT_ENUMERABLE) 149 public Object decodeURI; 150 151 /** ECMA 15.1.3.2 decodeURIComponent */ 152 @Property(attributes = Attribute.NOT_ENUMERABLE) 153 public Object decodeURIComponent; 154 155 /** ECMA B.2.1 escape (string) */ 156 @Property(attributes = Attribute.NOT_ENUMERABLE) 157 public Object escape; 158 159 /** ECMA B.2.2 unescape (string) */ 160 @Property(attributes = Attribute.NOT_ENUMERABLE) 161 public Object unescape; 162 163 /** Nashorn extension: global.print */ 164 @Property(attributes = Attribute.NOT_ENUMERABLE) 165 public Object print; 166 167 /** Nashorn extension: global.load */ 168 @Property(attributes = Attribute.NOT_ENUMERABLE) 169 public Object load; 170 171 /** Nashorn extension: global.loadWithNewGlobal */ 172 @Property(attributes = Attribute.NOT_ENUMERABLE) 173 public Object loadWithNewGlobal; 174 175 /** Nashorn extension: global.exit */ 176 @Property(attributes = Attribute.NOT_ENUMERABLE) 177 public Object exit; 178 179 /** Nashorn extension: global.quit */ 180 @Property(attributes = Attribute.NOT_ENUMERABLE) 181 public Object quit; 182 183 /** Value property NaN of the Global Object - ECMA 15.1.1.1 NaN */ 184 @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT) 185 public final double NaN = Double.NaN; 186 187 /** Value property Infinity of the Global Object - ECMA 15.1.1.2 Infinity */ 188 @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT) 189 public final double Infinity = Double.POSITIVE_INFINITY; 190 191 /** Value property Undefined of the Global Object - ECMA 15.1.1.3 Undefined */ 192 @Property(attributes = Attribute.NON_ENUMERABLE_CONSTANT) 193 public final Object undefined = UNDEFINED; 194 195 /** ECMA 15.1.2.1 eval(x) */ 196 @Property(attributes = Attribute.NOT_ENUMERABLE) 197 public Object eval; 198 199 /** ECMA 15.1.4.1 Object constructor. */ 200 @Property(name = "Object", attributes = Attribute.NOT_ENUMERABLE) 201 public volatile Object object; 202 203 /** ECMA 15.1.4.2 Function constructor. */ 204 @Property(name = "Function", attributes = Attribute.NOT_ENUMERABLE) 205 public volatile Object function; 206 207 /** ECMA 15.1.4.3 Array constructor. */ 208 @Property(name = "Array", attributes = Attribute.NOT_ENUMERABLE) 209 public volatile Object array; 210 211 /** ECMA 15.1.4.4 String constructor */ 212 @Property(name = "String", attributes = Attribute.NOT_ENUMERABLE) 213 public volatile Object string; 214 215 /** ECMA 15.1.4.5 Boolean constructor */ 216 @Property(name = "Boolean", attributes = Attribute.NOT_ENUMERABLE) 217 public volatile Object _boolean; 218 219 /** ECMA 15.1.4.6 - Number constructor */ 220 @Property(name = "Number", attributes = Attribute.NOT_ENUMERABLE) 221 public volatile Object number; 222 223 /** 224 * Getter for ECMA 15.1.4.7 Date property 225 * 226 * @param self self reference 227 * @return Date property value 228 */ 229 @Getter(name = "Date", attributes = Attribute.NOT_ENUMERABLE) 230 public static Object getDate(final Object self) { 231 final Global global = Global.instanceFrom(self); 232 if (global.date == LAZY_SENTINEL) { 233 global.date = global.getBuiltinDate(); 234 } 235 return global.date; 236 } 237 238 /** 239 * Setter for ECMA 15.1.4.7 Date property 240 * 241 * @param self self reference 242 * @param value value for the Date property 243 */ 244 @Setter(name = "Date", attributes = Attribute.NOT_ENUMERABLE) 245 public static void setDate(final Object self, final Object value) { 246 final Global global = Global.instanceFrom(self); 247 global.date = value; 248 } 249 250 private volatile Object date = LAZY_SENTINEL; 251 252 /** 253 * Getter for ECMA 15.1.4.8 RegExp property 254 * 255 * @param self self reference 256 * @return RegExp property value 257 */ 258 @Getter(name = "RegExp", attributes = Attribute.NOT_ENUMERABLE) 259 public static Object getRegExp(final Object self) { 260 final Global global = Global.instanceFrom(self); 261 if (global.regexp == LAZY_SENTINEL) { 262 global.regexp = global.getBuiltinRegExp(); 263 } 264 return global.regexp; 265 } 266 267 /** 268 * Setter for ECMA 15.1.4.8 RegExp property 269 * 270 * @param self self reference 271 * @param value value for the RegExp property 272 */ 273 @Setter(name = "RegExp", attributes = Attribute.NOT_ENUMERABLE) 274 public static void setRegExp(final Object self, final Object value) { 275 final Global global = Global.instanceFrom(self); 276 global.regexp = value; 277 } 278 279 private volatile Object regexp = LAZY_SENTINEL; 280 281 /** 282 * Getter for ECMA 15.12 - The JSON property 283 * @param self self reference 284 * @return the value of JSON property 285 */ 286 @Getter(name = "JSON", attributes = Attribute.NOT_ENUMERABLE) 287 public static Object getJSON(final Object self) { 288 final Global global = Global.instanceFrom(self); 289 if (global.json == LAZY_SENTINEL) { 290 global.json = global.getBuiltinJSON(); 291 } 292 return global.json; 293 } 294 295 /** 296 * Setter for ECMA 15.12 - The JSON property 297 * @param self self reference 298 * @param value value for the JSON property 299 */ 300 @Setter(name = "JSON", attributes = Attribute.NOT_ENUMERABLE) 301 public static void setJSON(final Object self, final Object value) { 302 final Global global = Global.instanceFrom(self); 303 global.json = value; 304 } 305 306 private volatile Object json = LAZY_SENTINEL; 307 308 /** 309 * Getter for Nashorn extension: global.JSAdapter 310 * @param self self reference 311 * @return value of the JSAdapter property 312 */ 313 @Getter(name = "JSAdapter", attributes = Attribute.NOT_ENUMERABLE) 314 public static Object getJSAdapter(final Object self) { 315 final Global global = Global.instanceFrom(self); 316 if (global.jsadapter == LAZY_SENTINEL) { 317 global.jsadapter = global.getBuiltinJSAdapter(); 318 } 319 return global.jsadapter; 320 } 321 322 /** 323 * Setter for Nashorn extension: global.JSAdapter 324 * @param self self reference 325 * @param value value for the JSAdapter property 326 */ 327 @Setter(name = "JSAdapter", attributes = Attribute.NOT_ENUMERABLE) 328 public static void setJSAdapter(final Object self, final Object value) { 329 final Global global = Global.instanceFrom(self); 330 global.jsadapter = value; 331 } 332 333 private volatile Object jsadapter = LAZY_SENTINEL; 334 335 /** ECMA 15.8 - The Math object */ 336 @Property(name = "Math", attributes = Attribute.NOT_ENUMERABLE) 337 public volatile Object math; 338 339 /** Error object */ 340 @Property(name = "Error", attributes = Attribute.NOT_ENUMERABLE) 341 public volatile Object error; 342 343 /** 344 * Getter for the EvalError property 345 * @param self self reference 346 * @return the value of EvalError property 347 */ 348 @Getter(name = "EvalError", attributes = Attribute.NOT_ENUMERABLE) 349 public static Object getEvalError(final Object self) { 350 final Global global = Global.instanceFrom(self); 351 if (global.evalError == LAZY_SENTINEL) { 352 global.evalError = global.getBuiltinEvalError(); 353 } 354 return global.evalError; 355 } 356 357 /** 358 * Setter for the EvalError property 359 * @param self self reference 360 * @param value value of the EvalError property 361 */ 362 @Setter(name = "EvalError", attributes = Attribute.NOT_ENUMERABLE) 363 public static void setEvalError(final Object self, final Object value) { 364 final Global global = Global.instanceFrom(self); 365 global.evalError = value; 366 } 367 368 private volatile Object evalError = LAZY_SENTINEL; 369 370 /** 371 * Getter for the RangeError property. 372 * @param self self reference 373 * @return the value of RangeError property 374 */ 375 @Getter(name = "RangeError", attributes = Attribute.NOT_ENUMERABLE) 376 public static Object getRangeError(final Object self) { 377 final Global global = Global.instanceFrom(self); 378 if (global.rangeError == LAZY_SENTINEL) { 379 global.rangeError = global.getBuiltinRangeError(); 380 } 381 return global.rangeError; 382 } 383 384 385 /** 386 * Setter for the RangeError property. 387 * @param self self reference 388 * @param value value for the RangeError property 389 */ 390 @Setter(name = "RangeError", attributes = Attribute.NOT_ENUMERABLE) 391 public static void setRangeError(final Object self, final Object value) { 392 final Global global = Global.instanceFrom(self); 393 global.rangeError = value; 394 } 395 396 private volatile Object rangeError = LAZY_SENTINEL; 397 398 /** ReferenceError object */ 399 @Property(name = "ReferenceError", attributes = Attribute.NOT_ENUMERABLE) 400 public volatile Object referenceError; 401 402 /** SyntaxError object */ 403 @Property(name = "SyntaxError", attributes = Attribute.NOT_ENUMERABLE) 404 public volatile Object syntaxError; 405 406 /** TypeError object */ 407 @Property(name = "TypeError", attributes = Attribute.NOT_ENUMERABLE) 408 public volatile Object typeError; 409 410 /** 411 * Getter for the URIError property. 412 * @param self self reference 413 * @return the value of URIError property 414 */ 415 @Getter(name = "URIError", attributes = Attribute.NOT_ENUMERABLE) 416 public static Object getURIError(final Object self) { 417 final Global global = Global.instanceFrom(self); 418 if (global.uriError == LAZY_SENTINEL) { 419 global.uriError = global.getBuiltinURIError(); 420 } 421 return global.uriError; 422 } 423 424 /** 425 * Setter for the URIError property. 426 * @param self self reference 427 * @param value value for the URIError property 428 */ 429 @Setter(name = "URIError", attributes = Attribute.NOT_ENUMERABLE) 430 public static void setURIError(final Object self, final Object value) { 431 final Global global = Global.instanceFrom(self); 432 global.uriError = value; 433 } 434 435 private volatile Object uriError = LAZY_SENTINEL; 436 437 /** 438 * Getter for the ArrayBuffer property. 439 * @param self self reference 440 * @return the value of the ArrayBuffer property 441 */ 442 @Getter(name = "ArrayBuffer", attributes = Attribute.NOT_ENUMERABLE) 443 public static Object getArrayBuffer(final Object self) { 444 final Global global = Global.instanceFrom(self); 445 if (global.arrayBuffer == LAZY_SENTINEL) { 446 global.arrayBuffer = global.getBuiltinArrayBuffer(); 447 } 448 return global.arrayBuffer; 449 } 450 451 /** 452 * Setter for the ArrayBuffer property. 453 * @param self self reference 454 * @param value value of the ArrayBuffer property 455 */ 456 @Setter(name = "ArrayBuffer", attributes = Attribute.NOT_ENUMERABLE) 457 public static void setArrayBuffer(final Object self, final Object value) { 458 final Global global = Global.instanceFrom(self); 459 global.arrayBuffer = value; 460 } 461 462 private volatile Object arrayBuffer; 463 464 /** 465 * Getter for the DataView property. 466 * @param self self reference 467 * @return the value of the DataView property 468 */ 469 @Getter(name = "DataView", attributes = Attribute.NOT_ENUMERABLE) 470 public static Object getDataView(final Object self) { 471 final Global global = Global.instanceFrom(self); 472 if (global.dataView == LAZY_SENTINEL) { 473 global.dataView = global.getBuiltinDataView(); 474 } 475 return global.dataView; 476 } 477 478 479 /** 480 * Setter for the DataView property. 481 * @param self self reference 482 * @param value value of the DataView property 483 */ 484 @Setter(name = "DataView", attributes = Attribute.NOT_ENUMERABLE) 485 public static void setDataView(final Object self, final Object value) { 486 final Global global = Global.instanceFrom(self); 487 global.dataView = value; 488 } 489 490 private volatile Object dataView; 491 492 /** 493 * Getter for the Int8Array property. 494 * @param self self reference 495 * @return the value of the Int8Array property. 496 */ 497 @Getter(name = "Int8Array", attributes = Attribute.NOT_ENUMERABLE) 498 public static Object getInt8Array(final Object self) { 499 final Global global = Global.instanceFrom(self); 500 if (global.int8Array == LAZY_SENTINEL) { 501 global.int8Array = global.getBuiltinInt8Array(); 502 } 503 return global.int8Array; 504 } 505 506 /** 507 * Setter for the Int8Array property. 508 * @param self self reference 509 * @param value value of the Int8Array property 510 */ 511 @Setter(name = "Int8Array", attributes = Attribute.NOT_ENUMERABLE) 512 public static void setInt8Array(final Object self, final Object value) { 513 final Global global = Global.instanceFrom(self); 514 global.int8Array = value; 515 } 516 517 private volatile Object int8Array; 518 519 /** 520 * Getter for the Uin8Array property. 521 * @param self self reference 522 * @return the value of the Uint8Array property 523 */ 524 @Getter(name = "Uint8Array", attributes = Attribute.NOT_ENUMERABLE) 525 public static Object getUint8Array(final Object self) { 526 final Global global = Global.instanceFrom(self); 527 if (global.uint8Array == LAZY_SENTINEL) { 528 global.uint8Array = global.getBuiltinUint8Array(); 529 } 530 return global.uint8Array; 531 } 532 533 /** 534 * Setter for the Uin8Array property. 535 * @param self self reference 536 * @param value value of the Uin8Array property 537 */ 538 @Setter(name = "Uint8Array", attributes = Attribute.NOT_ENUMERABLE) 539 public static void setUint8Array(final Object self, final Object value) { 540 final Global global = Global.instanceFrom(self); 541 global.uint8Array = value; 542 } 543 544 private volatile Object uint8Array; 545 546 /** 547 * Getter for the Uint8ClampedArray property. 548 * @param self self reference 549 * @return the value of the Uint8ClampedArray property 550 */ 551 @Getter(name = "Uint8ClampedArray", attributes = Attribute.NOT_ENUMERABLE) 552 public static Object getUint8ClampedArray(final Object self) { 553 final Global global = Global.instanceFrom(self); 554 if (global.uint8ClampedArray == LAZY_SENTINEL) { 555 global.uint8ClampedArray = global.getBuiltinUint8ClampedArray(); 556 } 557 return global.uint8ClampedArray; 558 } 559 560 /** 561 * Setter for the Uint8ClampedArray property. 562 * @param self self reference 563 * @param value value of the Uint8ClampedArray property 564 */ 565 @Setter(name = "Uint8ClampedArray", attributes = Attribute.NOT_ENUMERABLE) 566 public static void setUint8ClampedArray(final Object self, final Object value) { 567 final Global global = Global.instanceFrom(self); 568 global.uint8ClampedArray = value; 569 } 570 571 private volatile Object uint8ClampedArray; 572 573 /** 574 * Getter for the Int16Array property. 575 * @param self self reference 576 * @return the value of the Int16Array property 577 */ 578 @Getter(name = "Int16Array", attributes = Attribute.NOT_ENUMERABLE) 579 public static Object getInt16Array(final Object self) { 580 final Global global = Global.instanceFrom(self); 581 if (global.int16Array == LAZY_SENTINEL) { 582 global.int16Array = global.getBuiltinInt16Array(); 583 } 584 return global.int16Array; 585 } 586 587 /** 588 * Setter for the Int16Array property. 589 * @param self self reference 590 * @param value value of the Int16Array property 591 */ 592 @Setter(name = "Int16Array", attributes = Attribute.NOT_ENUMERABLE) 593 public static void setInt16Array(final Object self, final Object value) { 594 final Global global = Global.instanceFrom(self); 595 global.int16Array = value; 596 } 597 598 private volatile Object int16Array; 599 600 /** 601 * Getter for the Uint16Array property. 602 * @param self self reference 603 * @return the value of the Uint16Array property 604 */ 605 @Getter(name = "Uint16Array", attributes = Attribute.NOT_ENUMERABLE) 606 public static Object getUint16Array(final Object self) { 607 final Global global = Global.instanceFrom(self); 608 if (global.uint16Array == LAZY_SENTINEL) { 609 global.uint16Array = global.getBuiltinUint16Array(); 610 } 611 return global.uint16Array; 612 } 613 614 /** 615 * Setter for the Uint16Array property. 616 * @param self self reference 617 * @param value value of the Uint16Array property 618 */ 619 @Setter(name = "Uint16Array", attributes = Attribute.NOT_ENUMERABLE) 620 public static void setUint16Array(final Object self, final Object value) { 621 final Global global = Global.instanceFrom(self); 622 global.uint16Array = value; 623 } 624 625 private volatile Object uint16Array; 626 627 /** 628 * Getter for the Int32Array property. 629 * 630 * @param self self reference 631 * @return the value of the Int32Array property 632 */ 633 @Getter(name = "Int32Array", attributes = Attribute.NOT_ENUMERABLE) 634 public static Object getInt32Array(final Object self) { 635 final Global global = Global.instanceFrom(self); 636 if (global.int32Array == LAZY_SENTINEL) { 637 global.int32Array = global.getBuiltinInt32Array(); 638 } 639 return global.int32Array; 640 } 641 642 643 /** 644 * Setter for the Int32Array property. 645 * 646 * @param self self reference 647 * @param value value of the Int32Array property 648 */ 649 @Setter(name = "Int32Array", attributes = Attribute.NOT_ENUMERABLE) 650 public static void setInt32Array(final Object self, final Object value) { 651 final Global global = Global.instanceFrom(self); 652 global.int32Array = value; 653 } 654 655 private volatile Object int32Array; 656 657 /** 658 * Getter of the Uint32Array property. 659 * 660 * @param self self reference 661 * @return the value of the Uint32Array property 662 */ 663 @Getter(name = "Uint32Array", attributes = Attribute.NOT_ENUMERABLE) 664 public static Object getUint32Array(final Object self) { 665 final Global global = Global.instanceFrom(self); 666 if (global.uint32Array == LAZY_SENTINEL) { 667 global.uint32Array = global.getBuiltinUint32Array(); 668 } 669 return global.uint32Array; 670 } 671 672 673 /** 674 * Setter of the Uint32Array property. 675 * 676 * @param self self reference 677 * @param value value of the Uint32Array property 678 */ 679 @Setter(name = "Uint32Array", attributes = Attribute.NOT_ENUMERABLE) 680 public static void setUint32Array(final Object self, final Object value) { 681 final Global global = Global.instanceFrom(self); 682 global.uint32Array = value; 683 } 684 685 private volatile Object uint32Array; 686 687 /** 688 * Getter for the Float32Array property. 689 * 690 * @param self self reference 691 * @return the value of the Float32Array property 692 */ 693 @Getter(name = "Float32Array", attributes = Attribute.NOT_ENUMERABLE) 694 public static Object getFloat32Array(final Object self) { 695 final Global global = Global.instanceFrom(self); 696 if (global.float32Array == LAZY_SENTINEL) { 697 global.float32Array = global.getBuiltinFloat32Array(); 698 } 699 return global.float32Array; 700 } 701 702 /** 703 * Setter for the Float32Array property. 704 * 705 * @param self self reference 706 * @param value value of the Float32Array property 707 */ 708 @Setter(name = "Float32Array", attributes = Attribute.NOT_ENUMERABLE) 709 public static void setFloat32Array(final Object self, final Object value) { 710 final Global global = Global.instanceFrom(self); 711 global.float32Array = value; 712 } 713 714 private volatile Object float32Array; 715 716 /** 717 * Getter for the Float64Array property. 718 * 719 * @param self self reference 720 * @return the value of the Float64Array property 721 */ 722 @Getter(name = "Float64Array", attributes = Attribute.NOT_ENUMERABLE) 723 public static Object getFloat64Array(final Object self) { 724 final Global global = Global.instanceFrom(self); 725 if (global.float64Array == LAZY_SENTINEL) { 726 global.float64Array = global.getBuiltinFloat64Array(); 727 } 728 return global.float64Array; 729 } 730 731 /** 732 * Setter for the Float64Array property. 733 * 734 * @param self self reference 735 * @param value value of the Float64Array property 736 */ 737 @Setter(name = "Float64Array", attributes = Attribute.NOT_ENUMERABLE) 738 public static void setFloat64Array(final Object self, final Object value) { 739 final Global global = Global.instanceFrom(self); 740 global.float64Array = value; 741 } 742 743 private volatile Object float64Array; 744 745 /** Nashorn extension: Java access - global.Packages */ 746 @Property(name = "Packages", attributes = Attribute.NOT_ENUMERABLE) 747 public volatile Object packages; 748 749 /** Nashorn extension: Java access - global.com */ 750 @Property(attributes = Attribute.NOT_ENUMERABLE) 751 public volatile Object com; 752 753 /** Nashorn extension: Java access - global.edu */ 754 @Property(attributes = Attribute.NOT_ENUMERABLE) 755 public volatile Object edu; 756 757 /** Nashorn extension: Java access - global.java */ 758 @Property(attributes = Attribute.NOT_ENUMERABLE) 759 public volatile Object java; 760 761 /** Nashorn extension: Java access - global.javafx */ 762 @Property(attributes = Attribute.NOT_ENUMERABLE) 763 public volatile Object javafx; 764 765 /** Nashorn extension: Java access - global.javax */ 766 @Property(attributes = Attribute.NOT_ENUMERABLE) 767 public volatile Object javax; 768 769 /** Nashorn extension: Java access - global.org */ 770 @Property(attributes = Attribute.NOT_ENUMERABLE) 771 public volatile Object org; 772 773 /** 774 * Getter for the Nashorn extension: Java access - global.javaImporter. 775 * 776 * @param self self reference 777 * @return the value of the JavaImporter property 778 */ 779 @Getter(name = "JavaImporter", attributes = Attribute.NOT_ENUMERABLE) 780 public static Object getJavaImporter(final Object self) { 781 final Global global = Global.instanceFrom(self); 782 if (global.javaImporter == LAZY_SENTINEL) { 783 global.javaImporter = global.getBuiltinJavaImporter(); 784 } 785 return global.javaImporter; 786 } 787 788 /** 789 * Setter for the Nashorn extension: Java access - global.javaImporter. 790 * 791 * @param self self reference 792 * @param value value of the JavaImporter property 793 */ 794 @Setter(name = "JavaImporter", attributes = Attribute.NOT_ENUMERABLE) 795 public static void setJavaImporter(final Object self, final Object value) { 796 final Global global = Global.instanceFrom(self); 797 global.javaImporter = value; 798 } 799 800 private volatile Object javaImporter; 801 802 /** 803 * Getter for the Nashorn extension: global.Java property. 804 * 805 * @param self self reference 806 * @return the value of the Java property 807 */ 808 @Getter(name = "Java", attributes = Attribute.NOT_ENUMERABLE) 809 public static Object getJavaApi(final Object self) { 810 final Global global = Global.instanceFrom(self); 811 if (global.javaApi == LAZY_SENTINEL) { 812 global.javaApi = global.getBuiltinJavaApi(); 813 } 814 return global.javaApi; 815 } 816 817 /** 818 * Setter for the Nashorn extension: global.Java property. 819 * 820 * @param self self reference 821 * @param value value of the Java property 822 */ 823 @Setter(name = "Java", attributes = Attribute.NOT_ENUMERABLE) 824 public static void setJavaApi(final Object self, final Object value) { 825 final Global global = Global.instanceFrom(self); 826 global.javaApi = value; 827 } 828 829 private volatile Object javaApi; 830 831 /** Nashorn extension: current script's file name */ 832 @Property(name = "__FILE__", attributes = Attribute.NON_ENUMERABLE_CONSTANT) 833 public final Object __FILE__ = LOCATION_PROPERTY_PLACEHOLDER; 834 835 /** Nashorn extension: current script's directory */ 836 @Property(name = "__DIR__", attributes = Attribute.NON_ENUMERABLE_CONSTANT) 837 public final Object __DIR__ = LOCATION_PROPERTY_PLACEHOLDER; 838 839 /** Nashorn extension: current source line number being executed */ 840 @Property(name = "__LINE__", attributes = Attribute.NON_ENUMERABLE_CONSTANT) 841 public final Object __LINE__ = LOCATION_PROPERTY_PLACEHOLDER; 842 843 private volatile NativeDate DEFAULT_DATE; 844 845 /** Used as Date.prototype's default value */ 846 NativeDate getDefaultDate() { 847 return DEFAULT_DATE; 848 } 849 850 private volatile NativeRegExp DEFAULT_REGEXP; 851 852 /** Used as RegExp.prototype's default value */ 853 NativeRegExp getDefaultRegExp() { 854 return DEFAULT_REGEXP; 855 } 856 857 /* 858 * Built-in constructor objects: Even if user changes dynamic values of 859 * "Object", "Array" etc., we still want to keep original values of these 860 * constructors here. For example, we need to be able to create array, 861 * regexp literals even after user overwrites global "Array" or "RegExp" 862 * constructor - see also ECMA 262 spec. Annex D. 863 */ 864 private ScriptFunction builtinFunction; 865 private ScriptFunction builtinObject; 866 private ScriptFunction builtinArray; 867 private ScriptFunction builtinBoolean; 868 private ScriptFunction builtinDate; 869 private ScriptObject builtinJSON; 870 private ScriptFunction builtinJSAdapter; 871 private ScriptObject builtinMath; 872 private ScriptFunction builtinNumber; 873 private ScriptFunction builtinRegExp; 874 private ScriptFunction builtinString; 875 private ScriptFunction builtinError; 876 private ScriptFunction builtinEval; 877 private ScriptFunction builtinEvalError; 878 private ScriptFunction builtinRangeError; 879 private ScriptFunction builtinReferenceError; 880 private ScriptFunction builtinSyntaxError; 881 private ScriptFunction builtinTypeError; 882 private ScriptFunction builtinURIError; 883 private ScriptObject builtinPackages; 884 private ScriptObject builtinCom; 885 private ScriptObject builtinEdu; 886 private ScriptObject builtinJava; 887 private ScriptObject builtinJavafx; 888 private ScriptObject builtinJavax; 889 private ScriptObject builtinOrg; 890 private ScriptFunction builtinJavaImporter; 891 private ScriptObject builtinJavaApi; 892 private ScriptFunction builtinArrayBuffer; 893 private ScriptFunction builtinDataView; 894 private ScriptFunction builtinInt8Array; 895 private ScriptFunction builtinUint8Array; 896 private ScriptFunction builtinUint8ClampedArray; 897 private ScriptFunction builtinInt16Array; 898 private ScriptFunction builtinUint16Array; 899 private ScriptFunction builtinInt32Array; 900 private ScriptFunction builtinUint32Array; 901 private ScriptFunction builtinFloat32Array; 902 private ScriptFunction builtinFloat64Array; 903 904 /* 905 * ECMA section 13.2.3 The [[ThrowTypeError]] Function Object 906 */ 907 private ScriptFunction typeErrorThrower; 908 909 // Flag to indicate that a split method issued a return statement 910 private int splitState = -1; 911 912 // Used to store the last RegExp result to support deprecated RegExp constructor properties 913 private RegExpResult lastRegExpResult; 914 915 private static final MethodHandle EVAL = findOwnMH_S("eval", Object.class, Object.class, Object.class); 916 private static final MethodHandle NO_SUCH_PROPERTY = findOwnMH_S(NO_SUCH_PROPERTY_NAME, Object.class, Object.class, Object.class); 917 private static final MethodHandle PRINT = findOwnMH_S("print", Object.class, Object.class, Object[].class); 918 private static final MethodHandle PRINTLN = findOwnMH_S("println", Object.class, Object.class, Object[].class); 919 private static final MethodHandle LOAD = findOwnMH_S("load", Object.class, Object.class, Object.class); 920 private static final MethodHandle LOAD_WITH_NEW_GLOBAL = findOwnMH_S("loadWithNewGlobal", Object.class, Object.class, Object[].class); 921 private static final MethodHandle EXIT = findOwnMH_S("exit", Object.class, Object.class, Object.class); 922 private static final MethodHandle LEXICAL_SCOPE_FILTER = findOwnMH_S("lexicalScopeFilter", Object.class, Object.class); 923 924 // initialized by nasgen 925 private static PropertyMap $nasgenmap$; 926 927 // context to which this global belongs to 928 private final Context context; 929 930 // current ScriptContext to use - can be null. 931 private ScriptContext scontext; 932 // current ScriptEngine associated - can be null. 933 private ScriptEngine engine; 934 935 // ES6 global lexical scope. 936 private final LexicalScope lexicalScope; 937 938 // Switchpoint for non-constant global callsites in the presence of ES6 lexical scope. 939 private SwitchPoint lexicalScopeSwitchPoint; 940 941 /** 942 * Set the current script context 943 * @param scontext script context 944 */ 945 public void setScriptContext(final ScriptContext scontext) { 946 this.scontext = scontext; 947 } 948 949 @Override 950 protected Context getContext() { 951 return context; 952 } 953 954 @Override 955 protected boolean useDualFields() { 956 return context.useDualFields(); 957 } 958 959 // performs initialization checks for Global constructor and returns the 960 // PropertyMap, if everything is fine. 961 private static PropertyMap checkAndGetMap(final Context context) { 962 // security check first 963 final SecurityManager sm = System.getSecurityManager(); 964 if (sm != null) { 965 sm.checkPermission(new RuntimePermission(Context.NASHORN_CREATE_GLOBAL)); 966 } 967 968 Objects.requireNonNull(context); 969 970 return $nasgenmap$; 971 } 972 973 /** 974 * Constructor 975 * 976 * @param context the context 977 */ 978 public Global(final Context context) { 979 super(checkAndGetMap(context)); 980 this.context = context; 981 this.setIsScope(); 982 this.lexicalScope = context.getEnv()._es6 ? new LexicalScope(this) : null; 983 } 984 985 /** 986 * Script access to "current" Global instance 987 * 988 * @return the global singleton 989 */ 990 public static Global instance() { 991 final Global global = Context.getGlobal(); 992 Objects.requireNonNull(global); 993 return global; 994 } 995 996 private static Global instanceFrom(final Object self) { 997 return self instanceof Global? (Global)self : instance(); 998 } 999 1000 /** 1001 * Check if we have a Global instance 1002 * @return true if one exists 1003 */ 1004 public static boolean hasInstance() { 1005 return Context.getGlobal() != null; 1006 } 1007 1008 /** 1009 * Script access to {@link ScriptEnvironment} 1010 * 1011 * @return the script environment 1012 */ 1013 static ScriptEnvironment getEnv() { 1014 return instance().getContext().getEnv(); 1015 } 1016 1017 /** 1018 * Script access to {@link Context} 1019 * 1020 * @return the context 1021 */ 1022 static Context getThisContext() { 1023 return instance().getContext(); 1024 } 1025 1026 // Runtime interface to Global 1027 1028 /** 1029 * Is there a class filter in the current Context? 1030 * @return class filter 1031 */ 1032 public ClassFilter getClassFilter() { 1033 return context.getClassFilter(); 1034 } 1035 1036 /** 1037 * Is this global of the given Context? 1038 * @param ctxt the context 1039 * @return true if this global belongs to the given Context 1040 */ 1041 public boolean isOfContext(final Context ctxt) { 1042 return this.context == ctxt; 1043 } 1044 1045 /** 1046 * Does this global belong to a strict Context? 1047 * @return true if this global belongs to a strict Context 1048 */ 1049 public boolean isStrictContext() { 1050 return context.getEnv()._strict; 1051 } 1052 1053 /** 1054 * Initialize standard builtin objects like "Object", "Array", "Function" etc. 1055 * as well as our extension builtin objects like "Java", "JSAdapter" as properties 1056 * of the global scope object. 1057 * 1058 * @param engine ScriptEngine to initialize 1059 */ 1060 @SuppressWarnings("hiding") 1061 public void initBuiltinObjects(final ScriptEngine engine) { 1062 if (this.builtinObject != null) { 1063 // already initialized, just return 1064 return; 1065 } 1066 1067 this.engine = engine; 1068 init(engine); 1069 } 1070 1071 /** 1072 * Wrap a Java object as corresponding script object 1073 * 1074 * @param obj object to wrap 1075 * @return wrapped object 1076 */ 1077 public Object wrapAsObject(final Object obj) { 1078 if (obj instanceof Boolean) { 1079 return new NativeBoolean((Boolean)obj, this); 1080 } else if (obj instanceof Number) { 1081 return new NativeNumber(((Number)obj).doubleValue(), this); 1082 } else if (isString(obj)) { 1083 return new NativeString((CharSequence)obj, this); 1084 } else if (obj instanceof Object[]) { // extension 1085 return new NativeArray(ArrayData.allocate((Object[])obj), this); 1086 } else if (obj instanceof double[]) { // extension 1087 return new NativeArray(ArrayData.allocate((double[])obj), this); 1088 } else if (obj instanceof long[]) { 1089 return new NativeArray(ArrayData.allocate((long[])obj), this); 1090 } else if (obj instanceof int[]) { 1091 return new NativeArray(ArrayData.allocate((int[]) obj), this); 1092 } else if (obj instanceof ArrayData) { 1093 return new NativeArray((ArrayData) obj, this); 1094 } else { 1095 // FIXME: more special cases? Map? List? 1096 return obj; 1097 } 1098 } 1099 1100 /** 1101 * Lookup helper for JS primitive types 1102 * 1103 * @param request the link request for the dynamic call site. 1104 * @param self self reference 1105 * 1106 * @return guarded invocation 1107 */ 1108 public static GuardedInvocation primitiveLookup(final LinkRequest request, final Object self) { 1109 if (isString(self)) { 1110 return NativeString.lookupPrimitive(request, self); 1111 } else if (self instanceof Number) { 1112 return NativeNumber.lookupPrimitive(request, self); 1113 } else if (self instanceof Boolean) { 1114 return NativeBoolean.lookupPrimitive(request, self); 1115 } 1116 throw new IllegalArgumentException("Unsupported primitive: " + self); 1117 } 1118 1119 /** 1120 * Returns a method handle that creates a wrapper object for a JS primitive value. 1121 * 1122 * @param self receiver object 1123 * @return method handle to create wrapper objects for primitive receiver 1124 */ 1125 public static MethodHandle getPrimitiveWrapFilter(final Object self) { 1126 if (isString(self)) { 1127 return NativeString.WRAPFILTER; 1128 } else if (self instanceof Number) { 1129 return NativeNumber.WRAPFILTER; 1130 } else if (self instanceof Boolean) { 1131 return NativeBoolean.WRAPFILTER; 1132 } 1133 throw new IllegalArgumentException("Unsupported primitive: " + self); 1134 } 1135 1136 1137 /** 1138 * Create a new empty script object 1139 * 1140 * @return the new ScriptObject 1141 */ 1142 public ScriptObject newObject() { 1143 return useDualFields() ? new JD(getObjectPrototype()) : new JO(getObjectPrototype()); 1144 } 1145 1146 /** 1147 * Default value of given type 1148 * 1149 * @param sobj script object 1150 * @param typeHint type hint 1151 * 1152 * @return default value 1153 */ 1154 public Object getDefaultValue(final ScriptObject sobj, final Class<?> typeHint) { 1155 // When the [[DefaultValue]] internal method of O is called with no hint, 1156 // then it behaves as if the hint were Number, unless O is a Date object 1157 // in which case it behaves as if the hint were String. 1158 Class<?> hint = typeHint; 1159 if (hint == null) { 1160 hint = Number.class; 1161 } 1162 1163 try { 1164 if (hint == String.class) { 1165 1166 final Object toString = TO_STRING.getGetter().invokeExact(sobj); 1167 1168 if (Bootstrap.isCallable(toString)) { 1169 final Object value = TO_STRING.getInvoker().invokeExact(toString, sobj); 1170 if (JSType.isPrimitive(value)) { 1171 return value; 1172 } 1173 } 1174 1175 final Object valueOf = VALUE_OF.getGetter().invokeExact(sobj); 1176 if (Bootstrap.isCallable(valueOf)) { 1177 final Object value = VALUE_OF.getInvoker().invokeExact(valueOf, sobj); 1178 if (JSType.isPrimitive(value)) { 1179 return value; 1180 } 1181 } 1182 throw typeError(this, "cannot.get.default.string"); 1183 } 1184 1185 if (hint == Number.class) { 1186 final Object valueOf = VALUE_OF.getGetter().invokeExact(sobj); 1187 if (Bootstrap.isCallable(valueOf)) { 1188 final Object value = VALUE_OF.getInvoker().invokeExact(valueOf, sobj); 1189 if (JSType.isPrimitive(value)) { 1190 return value; 1191 } 1192 } 1193 1194 final Object toString = TO_STRING.getGetter().invokeExact(sobj); 1195 if (Bootstrap.isCallable(toString)) { 1196 final Object value = TO_STRING.getInvoker().invokeExact(toString, sobj); 1197 if (JSType.isPrimitive(value)) { 1198 return value; 1199 } 1200 } 1201 1202 throw typeError(this, "cannot.get.default.number"); 1203 } 1204 } catch (final RuntimeException | Error e) { 1205 throw e; 1206 } catch (final Throwable t) { 1207 throw new RuntimeException(t); 1208 } 1209 1210 return UNDEFINED; 1211 } 1212 1213 /** 1214 * Is the given ScriptObject an ECMAScript Error object? 1215 * 1216 * @param sobj the object being checked 1217 * @return true if sobj is an Error object 1218 */ 1219 public boolean isError(final ScriptObject sobj) { 1220 final ScriptObject errorProto = getErrorPrototype(); 1221 ScriptObject proto = sobj.getProto(); 1222 while (proto != null) { 1223 if (proto == errorProto) { 1224 return true; 1225 } 1226 proto = proto.getProto(); 1227 } 1228 return false; 1229 } 1230 1231 /** 1232 * Create a new ECMAScript Error object. 1233 * 1234 * @param msg error message 1235 * @return newly created Error object 1236 */ 1237 public ScriptObject newError(final String msg) { 1238 return new NativeError(msg, this); 1239 } 1240 1241 /** 1242 * Create a new ECMAScript EvalError object. 1243 * 1244 * @param msg error message 1245 * @return newly created EvalError object 1246 */ 1247 public ScriptObject newEvalError(final String msg) { 1248 return new NativeEvalError(msg, this); 1249 } 1250 1251 /** 1252 * Create a new ECMAScript RangeError object. 1253 * 1254 * @param msg error message 1255 * @return newly created RangeError object 1256 */ 1257 public ScriptObject newRangeError(final String msg) { 1258 return new NativeRangeError(msg, this); 1259 } 1260 1261 /** 1262 * Create a new ECMAScript ReferenceError object. 1263 * 1264 * @param msg error message 1265 * @return newly created ReferenceError object 1266 */ 1267 public ScriptObject newReferenceError(final String msg) { 1268 return new NativeReferenceError(msg, this); 1269 } 1270 1271 /** 1272 * Create a new ECMAScript SyntaxError object. 1273 * 1274 * @param msg error message 1275 * @return newly created SyntaxError object 1276 */ 1277 public ScriptObject newSyntaxError(final String msg) { 1278 return new NativeSyntaxError(msg, this); 1279 } 1280 1281 /** 1282 * Create a new ECMAScript TypeError object. 1283 * 1284 * @param msg error message 1285 * @return newly created TypeError object 1286 */ 1287 public ScriptObject newTypeError(final String msg) { 1288 return new NativeTypeError(msg, this); 1289 } 1290 1291 /** 1292 * Create a new ECMAScript URIError object. 1293 * 1294 * @param msg error message 1295 * @return newly created URIError object 1296 */ 1297 public ScriptObject newURIError(final String msg) { 1298 return new NativeURIError(msg, this); 1299 } 1300 1301 /** 1302 * Create a new ECMAScript GenericDescriptor object. 1303 * 1304 * @param configurable is the property configurable? 1305 * @param enumerable is the property enumerable? 1306 * @return newly created GenericDescriptor object 1307 */ 1308 public PropertyDescriptor newGenericDescriptor(final boolean configurable, final boolean enumerable) { 1309 return new GenericPropertyDescriptor(configurable, enumerable, this); 1310 } 1311 1312 /** 1313 * Create a new ECMAScript DatePropertyDescriptor object. 1314 * 1315 * @param value of the data property 1316 * @param configurable is the property configurable? 1317 * @param enumerable is the property enumerable? 1318 * @param writable is the property writable? 1319 * @return newly created DataPropertyDescriptor object 1320 */ 1321 public PropertyDescriptor newDataDescriptor(final Object value, final boolean configurable, final boolean enumerable, final boolean writable) { 1322 return new DataPropertyDescriptor(configurable, enumerable, writable, value, this); 1323 } 1324 1325 /** 1326 * Create a new ECMAScript AccessorPropertyDescriptor object. 1327 * 1328 * @param get getter function of the user accessor property 1329 * @param set setter function of the user accessor property 1330 * @param configurable is the property configurable? 1331 * @param enumerable is the property enumerable? 1332 * @return newly created AccessorPropertyDescriptor object 1333 */ 1334 public PropertyDescriptor newAccessorDescriptor(final Object get, final Object set, final boolean configurable, final boolean enumerable) { 1335 final AccessorPropertyDescriptor desc = new AccessorPropertyDescriptor(configurable, enumerable, get == null ? UNDEFINED : get, set == null ? UNDEFINED : set, this); 1336 1337 if (get == null) { 1338 desc.delete(PropertyDescriptor.GET, false); 1339 } 1340 1341 if (set == null) { 1342 desc.delete(PropertyDescriptor.SET, false); 1343 } 1344 1345 return desc; 1346 } 1347 1348 private static <T> T getLazilyCreatedValue(final Object key, final Callable<T> creator, final Map<Object, T> map) { 1349 final T obj = map.get(key); 1350 if (obj != null) { 1351 return obj; 1352 } 1353 1354 try { 1355 final T newObj = creator.call(); 1356 final T existingObj = map.putIfAbsent(key, newObj); 1357 return existingObj != null ? existingObj : newObj; 1358 } catch (final Exception exp) { 1359 throw new RuntimeException(exp); 1360 } 1361 } 1362 1363 private final Map<Object, InvokeByName> namedInvokers = new ConcurrentHashMap<>(); 1364 1365 1366 /** 1367 * Get cached InvokeByName object for the given key 1368 * @param key key to be associated with InvokeByName object 1369 * @param creator if InvokeByName is absent 'creator' is called to make one (lazy init) 1370 * @return InvokeByName object associated with the key. 1371 */ 1372 public InvokeByName getInvokeByName(final Object key, final Callable<InvokeByName> creator) { 1373 return getLazilyCreatedValue(key, creator, namedInvokers); 1374 } 1375 1376 private final Map<Object, MethodHandle> dynamicInvokers = new ConcurrentHashMap<>(); 1377 1378 /** 1379 * Get cached dynamic method handle for the given key 1380 * @param key key to be associated with dynamic method handle 1381 * @param creator if method handle is absent 'creator' is called to make one (lazy init) 1382 * @return dynamic method handle associated with the key. 1383 */ 1384 public MethodHandle getDynamicInvoker(final Object key, final Callable<MethodHandle> creator) { 1385 return getLazilyCreatedValue(key, creator, dynamicInvokers); 1386 } 1387 1388 /** 1389 * Hook to search missing variables in ScriptContext if available 1390 * @param self used to detect if scope call or not (this function is 'strict') 1391 * @param name name of the variable missing 1392 * @return value of the missing variable or undefined (or TypeError for scope search) 1393 */ 1394 public static Object __noSuchProperty__(final Object self, final Object name) { 1395 final Global global = Global.instance(); 1396 final ScriptContext sctxt = global.scontext; 1397 final String nameStr = name.toString(); 1398 1399 if (sctxt != null) { 1400 final int scope = sctxt.getAttributesScope(nameStr); 1401 if (scope != -1) { 1402 return ScriptObjectMirror.unwrap(sctxt.getAttribute(nameStr, scope), global); 1403 } 1404 } 1405 1406 switch (nameStr) { 1407 case "context": 1408 return sctxt; 1409 case "engine": 1410 return global.engine; 1411 default: 1412 break; 1413 } 1414 1415 if (self == UNDEFINED) { 1416 // scope access and so throw ReferenceError 1417 throw referenceError(global, "not.defined", nameStr); 1418 } 1419 1420 return UNDEFINED; 1421 } 1422 1423 /** 1424 * This is the eval used when 'indirect' eval call is made. 1425 * 1426 * var global = this; 1427 * global.eval("print('hello')"); 1428 * 1429 * @param self eval scope 1430 * @param str eval string 1431 * 1432 * @return the result of eval 1433 */ 1434 public static Object eval(final Object self, final Object str) { 1435 return directEval(self, str, UNDEFINED, UNDEFINED, false); 1436 } 1437 1438 /** 1439 * Direct eval 1440 * 1441 * @param self The scope of eval passed as 'self' 1442 * @param str Evaluated code 1443 * @param callThis "this" to be passed to the evaluated code 1444 * @param location location of the eval call 1445 * @param strict is eval called a strict mode code? 1446 * 1447 * @return the return value of the eval 1448 * 1449 * This is directly invoked from generated when eval(code) is called in user code 1450 */ 1451 public static Object directEval(final Object self, final Object str, final Object callThis, final Object location, final boolean strict) { 1452 if (!isString(str)) { 1453 return str; 1454 } 1455 final Global global = Global.instanceFrom(self); 1456 final ScriptObject scope = self instanceof ScriptObject && ((ScriptObject)self).isScope() ? (ScriptObject)self : global; 1457 1458 return global.getContext().eval(scope, str.toString(), callThis, location, strict, true); 1459 } 1460 1461 /** 1462 * Global print implementation - Nashorn extension 1463 * 1464 * @param self scope 1465 * @param objects arguments to print 1466 * 1467 * @return result of print (undefined) 1468 */ 1469 public static Object print(final Object self, final Object... objects) { 1470 return Global.instanceFrom(self).printImpl(false, objects); 1471 } 1472 1473 /** 1474 * Global println implementation - Nashorn extension 1475 * 1476 * @param self scope 1477 * @param objects arguments to print 1478 * 1479 * @return result of println (undefined) 1480 */ 1481 public static Object println(final Object self, final Object... objects) { 1482 return Global.instanceFrom(self).printImpl(true, objects); 1483 } 1484 1485 /** 1486 * Global load implementation - Nashorn extension 1487 * 1488 * @param self scope 1489 * @param source source to load 1490 * 1491 * @return result of load (undefined) 1492 * 1493 * @throws IOException if source could not be read 1494 */ 1495 public static Object load(final Object self, final Object source) throws IOException { 1496 final Global global = Global.instanceFrom(self); 1497 final ScriptObject scope = self instanceof ScriptObject ? (ScriptObject)self : global; 1498 return global.getContext().load(scope, source); 1499 } 1500 1501 /** 1502 * Global loadWithNewGlobal implementation - Nashorn extension 1503 * 1504 * @param self scope 1505 * @param args from plus (optional) arguments to be passed to the loaded script 1506 * 1507 * @return result of load (may be undefined) 1508 * 1509 * @throws IOException if source could not be read 1510 */ 1511 public static Object loadWithNewGlobal(final Object self, final Object...args) throws IOException { 1512 final Global global = Global.instanceFrom(self); 1513 final int length = args.length; 1514 final boolean hasArgs = 0 < length; 1515 final Object from = hasArgs ? args[0] : UNDEFINED; 1516 final Object[] arguments = hasArgs ? Arrays.copyOfRange(args, 1, length) : args; 1517 1518 return global.getContext().loadWithNewGlobal(from, arguments); 1519 } 1520 1521 /** 1522 * Global exit and quit implementation - Nashorn extension: perform a {@code System.exit} call from the script 1523 * 1524 * @param self self reference 1525 * @param code exit code 1526 * 1527 * @return undefined (will never be reached) 1528 */ 1529 public static Object exit(final Object self, final Object code) { 1530 System.exit(JSType.toInt32(code)); 1531 return UNDEFINED; 1532 } 1533 1534 // builtin prototype accessors 1535 1536 /** 1537 * Get the builtin Object prototype. 1538 * @return the object prototype. 1539 */ 1540 public ScriptObject getObjectPrototype() { 1541 return ScriptFunction.getPrototype(builtinObject); 1542 } 1543 1544 ScriptObject getFunctionPrototype() { 1545 return ScriptFunction.getPrototype(builtinFunction); 1546 } 1547 1548 ScriptObject getArrayPrototype() { 1549 return ScriptFunction.getPrototype(builtinArray); 1550 } 1551 1552 ScriptObject getBooleanPrototype() { 1553 return ScriptFunction.getPrototype(builtinBoolean); 1554 } 1555 1556 ScriptObject getNumberPrototype() { 1557 return ScriptFunction.getPrototype(builtinNumber); 1558 } 1559 1560 ScriptObject getDatePrototype() { 1561 return ScriptFunction.getPrototype(getBuiltinDate()); 1562 } 1563 1564 ScriptObject getRegExpPrototype() { 1565 return ScriptFunction.getPrototype(getBuiltinRegExp()); 1566 } 1567 1568 ScriptObject getStringPrototype() { 1569 return ScriptFunction.getPrototype(builtinString); 1570 } 1571 1572 ScriptObject getErrorPrototype() { 1573 return ScriptFunction.getPrototype(builtinError); 1574 } 1575 1576 ScriptObject getEvalErrorPrototype() { 1577 return ScriptFunction.getPrototype(getBuiltinEvalError()); 1578 } 1579 1580 ScriptObject getRangeErrorPrototype() { 1581 return ScriptFunction.getPrototype(getBuiltinRangeError()); 1582 } 1583 1584 ScriptObject getReferenceErrorPrototype() { 1585 return ScriptFunction.getPrototype(builtinReferenceError); 1586 } 1587 1588 ScriptObject getSyntaxErrorPrototype() { 1589 return ScriptFunction.getPrototype(builtinSyntaxError); 1590 } 1591 1592 ScriptObject getTypeErrorPrototype() { 1593 return ScriptFunction.getPrototype(builtinTypeError); 1594 } 1595 1596 ScriptObject getURIErrorPrototype() { 1597 return ScriptFunction.getPrototype(getBuiltinURIError()); 1598 } 1599 1600 ScriptObject getJavaImporterPrototype() { 1601 return ScriptFunction.getPrototype(getBuiltinJavaImporter()); 1602 } 1603 1604 ScriptObject getJSAdapterPrototype() { 1605 return ScriptFunction.getPrototype(getBuiltinJSAdapter()); 1606 } 1607 1608 private synchronized ScriptFunction getBuiltinArrayBuffer() { 1609 if (this.builtinArrayBuffer == null) { 1610 this.builtinArrayBuffer = initConstructorAndSwitchPoint("ArrayBuffer", ScriptFunction.class); 1611 } 1612 return this.builtinArrayBuffer; 1613 } 1614 1615 ScriptObject getArrayBufferPrototype() { 1616 return ScriptFunction.getPrototype(getBuiltinArrayBuffer()); 1617 } 1618 1619 private synchronized ScriptFunction getBuiltinDataView() { 1620 if (this.builtinDataView == null) { 1621 this.builtinDataView = initConstructorAndSwitchPoint("DataView", ScriptFunction.class); 1622 } 1623 return this.builtinDataView; 1624 } 1625 1626 ScriptObject getDataViewPrototype() { 1627 return ScriptFunction.getPrototype(getBuiltinDataView()); 1628 } 1629 1630 private synchronized ScriptFunction getBuiltinInt8Array() { 1631 if (this.builtinInt8Array == null) { 1632 this.builtinInt8Array = initConstructorAndSwitchPoint("Int8Array", ScriptFunction.class); 1633 } 1634 return this.builtinInt8Array; 1635 } 1636 1637 ScriptObject getInt8ArrayPrototype() { 1638 return ScriptFunction.getPrototype(getBuiltinInt8Array()); 1639 } 1640 1641 private synchronized ScriptFunction getBuiltinUint8Array() { 1642 if (this.builtinUint8Array == null) { 1643 this.builtinUint8Array = initConstructorAndSwitchPoint("Uint8Array", ScriptFunction.class); 1644 } 1645 return this.builtinUint8Array; 1646 } 1647 1648 ScriptObject getUint8ArrayPrototype() { 1649 return ScriptFunction.getPrototype(getBuiltinUint8Array()); 1650 } 1651 1652 private synchronized ScriptFunction getBuiltinUint8ClampedArray() { 1653 if (this.builtinUint8ClampedArray == null) { 1654 this.builtinUint8ClampedArray = initConstructorAndSwitchPoint("Uint8ClampedArray", ScriptFunction.class); 1655 } 1656 return this.builtinUint8ClampedArray; 1657 } 1658 1659 ScriptObject getUint8ClampedArrayPrototype() { 1660 return ScriptFunction.getPrototype(getBuiltinUint8ClampedArray()); 1661 } 1662 1663 private synchronized ScriptFunction getBuiltinInt16Array() { 1664 if (this.builtinInt16Array == null) { 1665 this.builtinInt16Array = initConstructorAndSwitchPoint("Int16Array", ScriptFunction.class); 1666 } 1667 return this.builtinInt16Array; 1668 } 1669 1670 ScriptObject getInt16ArrayPrototype() { 1671 return ScriptFunction.getPrototype(getBuiltinInt16Array()); 1672 } 1673 1674 private synchronized ScriptFunction getBuiltinUint16Array() { 1675 if (this.builtinUint16Array == null) { 1676 this.builtinUint16Array = initConstructorAndSwitchPoint("Uint16Array", ScriptFunction.class); 1677 } 1678 return this.builtinUint16Array; 1679 } 1680 1681 ScriptObject getUint16ArrayPrototype() { 1682 return ScriptFunction.getPrototype(getBuiltinUint16Array()); 1683 } 1684 1685 private synchronized ScriptFunction getBuiltinInt32Array() { 1686 if (this.builtinInt32Array == null) { 1687 this.builtinInt32Array = initConstructorAndSwitchPoint("Int32Array", ScriptFunction.class); 1688 } 1689 return this.builtinInt32Array; 1690 } 1691 1692 ScriptObject getInt32ArrayPrototype() { 1693 return ScriptFunction.getPrototype(getBuiltinInt32Array()); 1694 } 1695 1696 private synchronized ScriptFunction getBuiltinUint32Array() { 1697 if (this.builtinUint32Array == null) { 1698 this.builtinUint32Array = initConstructorAndSwitchPoint("Uint32Array", ScriptFunction.class); 1699 } 1700 return this.builtinUint32Array; 1701 } 1702 1703 ScriptObject getUint32ArrayPrototype() { 1704 return ScriptFunction.getPrototype(getBuiltinUint32Array()); 1705 } 1706 1707 private synchronized ScriptFunction getBuiltinFloat32Array() { 1708 if (this.builtinFloat32Array == null) { 1709 this.builtinFloat32Array = initConstructorAndSwitchPoint("Float32Array", ScriptFunction.class); 1710 } 1711 return this.builtinFloat32Array; 1712 } 1713 1714 ScriptObject getFloat32ArrayPrototype() { 1715 return ScriptFunction.getPrototype(getBuiltinFloat32Array()); 1716 } 1717 1718 private synchronized ScriptFunction getBuiltinFloat64Array() { 1719 if (this.builtinFloat64Array == null) { 1720 this.builtinFloat64Array = initConstructorAndSwitchPoint("Float64Array", ScriptFunction.class); 1721 } 1722 return this.builtinFloat64Array; 1723 } 1724 1725 ScriptObject getFloat64ArrayPrototype() { 1726 return ScriptFunction.getPrototype(getBuiltinFloat64Array()); 1727 } 1728 1729 private ScriptFunction getBuiltinArray() { 1730 return builtinArray; 1731 } 1732 1733 ScriptFunction getTypeErrorThrower() { 1734 return typeErrorThrower; 1735 } 1736 1737 /** 1738 * Called from compiled script code to test if builtin has been overridden 1739 * 1740 * @return true if builtin array has not been overridden 1741 */ 1742 public static boolean isBuiltinArray() { 1743 final Global instance = Global.instance(); 1744 return instance.array == instance.getBuiltinArray(); 1745 } 1746 1747 private ScriptFunction getBuiltinBoolean() { 1748 return builtinBoolean; 1749 } 1750 1751 /** 1752 * Called from compiled script code to test if builtin has been overridden 1753 * 1754 * @return true if builtin boolean has not been overridden 1755 */ 1756 public static boolean isBuiltinBoolean() { 1757 final Global instance = Global.instance(); 1758 return instance._boolean == instance.getBuiltinBoolean(); 1759 } 1760 1761 private synchronized ScriptFunction getBuiltinDate() { 1762 if (this.builtinDate == null) { 1763 this.builtinDate = initConstructorAndSwitchPoint("Date", ScriptFunction.class); 1764 final ScriptObject dateProto = ScriptFunction.getPrototype(builtinDate); 1765 // initialize default date 1766 this.DEFAULT_DATE = new NativeDate(NaN, dateProto); 1767 } 1768 return this.builtinDate; 1769 } 1770 1771 /** 1772 * Called from compiled script code to test if builtin has been overridden 1773 * 1774 * @return true if builtin date has not been overridden 1775 */ 1776 public static boolean isBuiltinDate() { 1777 final Global instance = Global.instance(); 1778 return instance.date == LAZY_SENTINEL || instance.date == instance.getBuiltinDate(); 1779 } 1780 1781 private ScriptFunction getBuiltinError() { 1782 return builtinError; 1783 } 1784 1785 /** 1786 * Called from compiled script code to test if builtin has been overridden 1787 * 1788 * @return true if builtin error has not been overridden 1789 */ 1790 public static boolean isBuiltinError() { 1791 final Global instance = Global.instance(); 1792 return instance.error == instance.getBuiltinError(); 1793 } 1794 1795 private synchronized ScriptFunction getBuiltinEvalError() { 1796 if (this.builtinEvalError == null) { 1797 this.builtinEvalError = initErrorSubtype("EvalError", getErrorPrototype()); 1798 } 1799 return this.builtinEvalError; 1800 } 1801 1802 /** 1803 * Called from compiled script code to test if builtin has been overridden 1804 * 1805 * @return true if builtin eval error has not been overridden 1806 */ 1807 public static boolean isBuiltinEvalError() { 1808 final Global instance = Global.instance(); 1809 return instance.evalError == LAZY_SENTINEL || instance.evalError == instance.getBuiltinEvalError(); 1810 } 1811 1812 private ScriptFunction getBuiltinFunction() { 1813 return builtinFunction; 1814 } 1815 1816 /** 1817 * Called from compiled script code to test if builtin has been overridden 1818 * 1819 * @return true if builtin function has not been overridden 1820 */ 1821 public static boolean isBuiltinFunction() { 1822 final Global instance = Global.instance(); 1823 return instance.function == instance.getBuiltinFunction(); 1824 } 1825 1826 /** 1827 * Get the switchpoint used to check property changes for Function.prototype.apply 1828 * @return the switchpoint guarding apply (same as guarding call, and everything else in function) 1829 */ 1830 public static SwitchPoint getBuiltinFunctionApplySwitchPoint() { 1831 return ScriptFunction.getPrototype(Global.instance().getBuiltinFunction()).getProperty("apply").getBuiltinSwitchPoint(); 1832 } 1833 1834 private static boolean isBuiltinFunctionProperty(final String name) { 1835 final Global instance = Global.instance(); 1836 final ScriptFunction builtinFunction = instance.getBuiltinFunction(); 1837 if (builtinFunction == null) { 1838 return false; //conservative for compile-only mode 1839 } 1840 final boolean isBuiltinFunction = instance.function == builtinFunction; 1841 return isBuiltinFunction && ScriptFunction.getPrototype(builtinFunction).getProperty(name).isBuiltin(); 1842 } 1843 1844 /** 1845 * Check if the Function.prototype.apply has not been replaced 1846 * @return true if Function.prototype.apply has been replaced 1847 */ 1848 public static boolean isBuiltinFunctionPrototypeApply() { 1849 return isBuiltinFunctionProperty("apply"); 1850 } 1851 1852 /** 1853 * Check if the Function.prototype.apply has not been replaced 1854 * @return true if Function.prototype.call has been replaced 1855 */ 1856 public static boolean isBuiltinFunctionPrototypeCall() { 1857 return isBuiltinFunctionProperty("call"); 1858 } 1859 1860 private synchronized ScriptFunction getBuiltinJSAdapter() { 1861 if (this.builtinJSAdapter == null) { 1862 this.builtinJSAdapter = initConstructorAndSwitchPoint("JSAdapter", ScriptFunction.class); 1863 } 1864 return builtinJSAdapter; 1865 } 1866 1867 /** 1868 * Called from compiled script code to test if builtin has been overridden 1869 * 1870 * @return true if builtin JSAdapter has not been overridden 1871 */ 1872 public static boolean isBuiltinJSAdapter() { 1873 final Global instance = Global.instance(); 1874 return instance.jsadapter == LAZY_SENTINEL || instance.jsadapter == instance.getBuiltinJSAdapter(); 1875 } 1876 1877 private synchronized ScriptObject getBuiltinJSON() { 1878 if (this.builtinJSON == null) { 1879 this.builtinJSON = initConstructorAndSwitchPoint("JSON", ScriptObject.class); 1880 } 1881 return this.builtinJSON; 1882 } 1883 1884 /** 1885 * Called from compiled script code to test if builtin has been overridden 1886 * 1887 * @return true if builtin JSON has has not been overridden 1888 */ 1889 public static boolean isBuiltinJSON() { 1890 final Global instance = Global.instance(); 1891 return instance.json == LAZY_SENTINEL || instance.json == instance.getBuiltinJSON(); 1892 } 1893 1894 private ScriptObject getBuiltinJava() { 1895 return builtinJava; 1896 } 1897 1898 /** 1899 * Called from compiled script code to test if builtin has been overridden 1900 * 1901 * @return true if builtin Java has not been overridden 1902 */ 1903 public static boolean isBuiltinJava() { 1904 final Global instance = Global.instance(); 1905 return instance.java == instance.getBuiltinJava(); 1906 } 1907 1908 private ScriptObject getBuiltinJavax() { 1909 return builtinJavax; 1910 } 1911 1912 /** 1913 * Called from compiled script code to test if builtin has been overridden 1914 * 1915 * @return true if builtin Javax has not been overridden 1916 */ 1917 public static boolean isBuiltinJavax() { 1918 final Global instance = Global.instance(); 1919 return instance.javax == instance.getBuiltinJavax(); 1920 } 1921 1922 private synchronized ScriptFunction getBuiltinJavaImporter() { 1923 if (this.builtinJavaImporter == null) { 1924 this.builtinJavaImporter = initConstructor("JavaImporter", ScriptFunction.class); 1925 } 1926 return this.builtinJavaImporter; 1927 } 1928 1929 private synchronized ScriptObject getBuiltinJavaApi() { 1930 if (this.builtinJavaApi == null) { 1931 this.builtinJavaApi = initConstructor("Java", ScriptObject.class); 1932 } 1933 return this.builtinJavaApi; 1934 } 1935 1936 /** 1937 * Called from compiled script code to test if builtin has been overridden 1938 * 1939 * @return true if builtin Java importer has not been overridden 1940 */ 1941 public static boolean isBuiltinJavaImporter() { 1942 final Global instance = Global.instance(); 1943 return instance.javaImporter == LAZY_SENTINEL || instance.javaImporter == instance.getBuiltinJavaImporter(); 1944 } 1945 1946 /** 1947 * Called from compiled script code to test if builtin has been overridden 1948 * 1949 * @return true if builtin math has not been overridden 1950 */ 1951 public static boolean isBuiltinMath() { 1952 final Global instance = Global.instance(); 1953 return instance.math == instance.builtinMath; 1954 } 1955 1956 private ScriptFunction getBuiltinNumber() { 1957 return builtinNumber; 1958 } 1959 1960 /** 1961 * Called from compiled script code to test if builtin has been overridden 1962 * 1963 * @return true if builtin number has not been overridden 1964 */ 1965 public static boolean isBuiltinNumber() { 1966 final Global instance = Global.instance(); 1967 return instance.number == instance.getBuiltinNumber(); 1968 } 1969 1970 private ScriptFunction getBuiltinObject() { 1971 return builtinObject; 1972 } 1973 1974 /** 1975 * Called from compiled script code to test if builtin has been overridden 1976 * 1977 * @return true if builtin object has not been overridden 1978 */ 1979 public static boolean isBuiltinObject() { 1980 final Global instance = Global.instance(); 1981 return instance.object == instance.getBuiltinObject(); 1982 } 1983 1984 private ScriptObject getBuiltinPackages() { 1985 return builtinPackages; 1986 } 1987 1988 /** 1989 * Called from compiled script code to test if builtin has been overridden 1990 * 1991 * @return true if builtin package has not been overridden 1992 */ 1993 public static boolean isBuiltinPackages() { 1994 final Global instance = Global.instance(); 1995 return instance.packages == instance.getBuiltinPackages(); 1996 } 1997 1998 private synchronized ScriptFunction getBuiltinRangeError() { 1999 if (this.builtinRangeError == null) { 2000 this.builtinRangeError = initErrorSubtype("RangeError", getErrorPrototype()); 2001 } 2002 return builtinRangeError; 2003 } 2004 2005 /** 2006 * Called from compiled script code to test if builtin has been overridden 2007 * 2008 * @return true if builtin range error has not been overridden 2009 */ 2010 public static boolean isBuiltinRangeError() { 2011 final Global instance = Global.instance(); 2012 return instance.rangeError == LAZY_SENTINEL || instance.rangeError == instance.getBuiltinRangeError(); 2013 } 2014 2015 private synchronized ScriptFunction getBuiltinReferenceError() { 2016 return builtinReferenceError; 2017 } 2018 2019 /** 2020 * Called from compiled script code to test if builtin has been overridden 2021 * 2022 * @return true if builtin reference error has not been overridden 2023 */ 2024 public static boolean isBuiltinReferenceError() { 2025 final Global instance = Global.instance(); 2026 return instance.referenceError == instance.getBuiltinReferenceError(); 2027 } 2028 2029 private synchronized ScriptFunction getBuiltinRegExp() { 2030 if (this.builtinRegExp == null) { 2031 this.builtinRegExp = initConstructorAndSwitchPoint("RegExp", ScriptFunction.class); 2032 final ScriptObject regExpProto = ScriptFunction.getPrototype(builtinRegExp); 2033 // initialize default regexp object 2034 this.DEFAULT_REGEXP = new NativeRegExp("(?:)", "", this, regExpProto); 2035 // RegExp.prototype should behave like a RegExp object. So copy the 2036 // properties. 2037 regExpProto.addBoundProperties(DEFAULT_REGEXP); 2038 } 2039 return builtinRegExp; 2040 } 2041 2042 /** 2043 * Called from compiled script code to test if builtin has been overridden 2044 * 2045 * @return true if builtin regexp has not been overridden 2046 */ 2047 public static boolean isBuiltinRegExp() { 2048 final Global instance = Global.instance(); 2049 return instance.regexp == LAZY_SENTINEL || instance.regexp == instance.getBuiltinRegExp(); 2050 } 2051 2052 private ScriptFunction getBuiltinString() { 2053 return builtinString; 2054 } 2055 2056 /** 2057 * Called from compiled script code to test if builtin has been overridden 2058 * 2059 * @return true if builtin Java has not been overridden 2060 */ 2061 public static boolean isBuiltinString() { 2062 final Global instance = Global.instance(); 2063 return instance.string == instance.getBuiltinString(); 2064 } 2065 2066 private ScriptFunction getBuiltinSyntaxError() { 2067 return builtinSyntaxError; 2068 } 2069 2070 /** 2071 * Called from compiled script code to test if builtin has been overridden 2072 * 2073 * @return true if builtin syntax error has not been overridden 2074 */ 2075 public static boolean isBuiltinSyntaxError() { 2076 final Global instance = Global.instance(); 2077 return instance.syntaxError == instance.getBuiltinSyntaxError(); 2078 } 2079 2080 private ScriptFunction getBuiltinTypeError() { 2081 return builtinTypeError; 2082 } 2083 2084 /** 2085 * Called from compiled script code to test if builtin has been overridden 2086 * 2087 * @return true if builtin type error has not been overridden 2088 */ 2089 public static boolean isBuiltinTypeError() { 2090 final Global instance = Global.instance(); 2091 return instance.typeError == instance.getBuiltinTypeError(); 2092 } 2093 2094 private synchronized ScriptFunction getBuiltinURIError() { 2095 if (this.builtinURIError == null) { 2096 this.builtinURIError = initErrorSubtype("URIError", getErrorPrototype()); 2097 } 2098 return this.builtinURIError; 2099 } 2100 2101 /** 2102 * Called from compiled script code to test if builtin has been overridden 2103 * 2104 * @return true if builtin URI error has not been overridden 2105 */ 2106 public static boolean isBuiltinURIError() { 2107 final Global instance = Global.instance(); 2108 return instance.uriError == LAZY_SENTINEL || instance.uriError == instance.getBuiltinURIError(); 2109 } 2110 2111 @Override 2112 public String getClassName() { 2113 return "global"; 2114 } 2115 2116 /** 2117 * Copy function used to clone NativeRegExp objects. 2118 * 2119 * @param regexp a NativeRegExp to clone 2120 * 2121 * @return copy of the given regexp object 2122 */ 2123 public static Object regExpCopy(final Object regexp) { 2124 return new NativeRegExp((NativeRegExp)regexp); 2125 } 2126 2127 /** 2128 * Convert given object to NativeRegExp type. 2129 * 2130 * @param obj object to be converted 2131 * @return NativeRegExp instance 2132 */ 2133 public static NativeRegExp toRegExp(final Object obj) { 2134 if (obj instanceof NativeRegExp) { 2135 return (NativeRegExp)obj; 2136 } 2137 return new NativeRegExp(JSType.toString(obj)); 2138 } 2139 2140 /** 2141 * ECMA 9.9 ToObject implementation 2142 * 2143 * @param obj an item for which to run ToObject 2144 * @return ToObject version of given item 2145 */ 2146 public static Object toObject(final Object obj) { 2147 if (obj == null || obj == UNDEFINED) { 2148 throw typeError("not.an.object", ScriptRuntime.safeToString(obj)); 2149 } 2150 2151 if (obj instanceof ScriptObject) { 2152 return obj; 2153 } 2154 2155 return instance().wrapAsObject(obj); 2156 } 2157 2158 /** 2159 * Allocate a new object array. 2160 * 2161 * @param initial object values. 2162 * @return the new array 2163 */ 2164 public static NativeArray allocate(final Object[] initial) { 2165 ArrayData arrayData = ArrayData.allocate(initial); 2166 2167 for (int index = 0; index < initial.length; index++) { 2168 final Object value = initial[index]; 2169 2170 if (value == ScriptRuntime.EMPTY) { 2171 arrayData = arrayData.delete(index); 2172 } 2173 } 2174 2175 return new NativeArray(arrayData); 2176 } 2177 2178 /** 2179 * Allocate a new number array. 2180 * 2181 * @param initial number values. 2182 * @return the new array 2183 */ 2184 public static NativeArray allocate(final double[] initial) { 2185 return new NativeArray(ArrayData.allocate(initial)); 2186 } 2187 2188 /** 2189 * Allocate a new long array. 2190 * 2191 * @param initial number values. 2192 * @return the new array 2193 */ 2194 public static NativeArray allocate(final long[] initial) { 2195 return new NativeArray(ArrayData.allocate(initial)); 2196 } 2197 2198 /** 2199 * Allocate a new integer array. 2200 * 2201 * @param initial number values. 2202 * @return the new array 2203 */ 2204 public static NativeArray allocate(final int[] initial) { 2205 return new NativeArray(ArrayData.allocate(initial)); 2206 } 2207 2208 /** 2209 * Allocate a new object array for arguments. 2210 * 2211 * @param arguments initial arguments passed. 2212 * @param callee reference to the function that uses arguments object 2213 * @param numParams actual number of declared parameters 2214 * 2215 * @return the new array 2216 */ 2217 public static ScriptObject allocateArguments(final Object[] arguments, final Object callee, final int numParams) { 2218 return NativeArguments.allocate(arguments, (ScriptFunction)callee, numParams); 2219 } 2220 2221 /** 2222 * Called from generated to check if given function is the builtin 'eval'. If 2223 * eval is used in a script, a lot of optimizations and assumptions cannot be done. 2224 * 2225 * @param fn function object that is checked 2226 * @return true if fn is the builtin eval 2227 */ 2228 public static boolean isEval(final Object fn) { 2229 return fn == Global.instance().builtinEval; 2230 } 2231 2232 /** 2233 * Called from generated to replace a location property placeholder with the actual location property value. 2234 * 2235 * @param placeholder the value tested for being a placeholder for a location property 2236 * @param locationProperty the actual value for the location property 2237 * @return locationProperty if placeholder is indeed a placeholder for a location property, the placeholder otherwise 2238 */ 2239 public static Object replaceLocationPropertyPlaceholder(final Object placeholder, final Object locationProperty) { 2240 return isLocationPropertyPlaceholder(placeholder) ? locationProperty : placeholder; 2241 } 2242 2243 /** 2244 * Called from runtime internals to check if the passed value is a location property placeholder. 2245 * @param placeholder the value tested for being a placeholder for a location property 2246 * @return true if the value is a placeholder, false otherwise. 2247 */ 2248 public static boolean isLocationPropertyPlaceholder(final Object placeholder) { 2249 return placeholder == LOCATION_PROPERTY_PLACEHOLDER; 2250 } 2251 2252 /** 2253 * Create a new RegExp object. 2254 * 2255 * @param expression Regular expression. 2256 * @param options Search options. 2257 * 2258 * @return New RegExp object. 2259 */ 2260 public static Object newRegExp(final String expression, final String options) { 2261 if (options == null) { 2262 return new NativeRegExp(expression); 2263 } 2264 return new NativeRegExp(expression, options); 2265 } 2266 2267 /** 2268 * Get the object prototype 2269 * 2270 * @return the object prototype 2271 */ 2272 public static ScriptObject objectPrototype() { 2273 return Global.instance().getObjectPrototype(); 2274 } 2275 2276 /** 2277 * Create a new empty object instance. 2278 * 2279 * @return New empty object. 2280 */ 2281 public static ScriptObject newEmptyInstance() { 2282 return Global.instance().newObject(); 2283 } 2284 2285 /** 2286 * Check if a given object is a ScriptObject, raises an exception if this is 2287 * not the case 2288 * 2289 * @param obj and object to check 2290 * @return the script object 2291 */ 2292 public static ScriptObject checkObject(final Object obj) { 2293 if (!(obj instanceof ScriptObject)) { 2294 throw typeError("not.an.object", ScriptRuntime.safeToString(obj)); 2295 } 2296 return (ScriptObject)obj; 2297 } 2298 2299 /** 2300 * ECMA 9.10 - implementation of CheckObjectCoercible, i.e. raise an exception 2301 * if this object is null or undefined. 2302 * 2303 * @param obj an object to check 2304 */ 2305 public static void checkObjectCoercible(final Object obj) { 2306 if (obj == null || obj == UNDEFINED) { 2307 throw typeError("not.an.object", ScriptRuntime.safeToString(obj)); 2308 } 2309 } 2310 2311 /** 2312 * Get the current split state. 2313 * 2314 * @return current split state 2315 */ 2316 @Override 2317 public int getSplitState() { 2318 return splitState; 2319 } 2320 2321 /** 2322 * Set the current split state. 2323 * 2324 * @param state current split state 2325 */ 2326 @Override 2327 public void setSplitState(final int state) { 2328 splitState = state; 2329 } 2330 2331 /** 2332 * Return the ES6 global scope for lexically declared bindings. 2333 * @return the ES6 lexical global scope. 2334 */ 2335 public final ScriptObject getLexicalScope() { 2336 assert context.getEnv()._es6; 2337 return lexicalScope; 2338 } 2339 2340 @Override 2341 public void addBoundProperties(final ScriptObject source, final jdk.nashorn.internal.runtime.Property[] properties) { 2342 PropertyMap ownMap = getMap(); 2343 LexicalScope lexScope = null; 2344 PropertyMap lexicalMap = null; 2345 boolean hasLexicalDefinitions = false; 2346 2347 if (context.getEnv()._es6) { 2348 lexScope = (LexicalScope) getLexicalScope(); 2349 lexicalMap = lexScope.getMap(); 2350 2351 for (final jdk.nashorn.internal.runtime.Property property : properties) { 2352 if (property.isLexicalBinding()) { 2353 hasLexicalDefinitions = true; 2354 } 2355 // ES6 15.1.8 steps 6. and 7. 2356 final jdk.nashorn.internal.runtime.Property globalProperty = ownMap.findProperty(property.getKey()); 2357 if (globalProperty != null && !globalProperty.isConfigurable() && property.isLexicalBinding()) { 2358 throw ECMAErrors.syntaxError("redeclare.variable", property.getKey()); 2359 } 2360 final jdk.nashorn.internal.runtime.Property lexicalProperty = lexicalMap.findProperty(property.getKey()); 2361 if (lexicalProperty != null && !property.isConfigurable()) { 2362 throw ECMAErrors.syntaxError("redeclare.variable", property.getKey()); 2363 } 2364 } 2365 } 2366 2367 for (final jdk.nashorn.internal.runtime.Property property : properties) { 2368 if (property.isLexicalBinding()) { 2369 assert lexScope != null; 2370 lexicalMap = lexScope.addBoundProperty(lexicalMap, source, property); 2371 2372 if (ownMap.findProperty(property.getKey()) != null) { 2373 // If property exists in the global object invalidate any global constant call sites. 2374 invalidateGlobalConstant(property.getKey()); 2375 } 2376 } else { 2377 ownMap = addBoundProperty(ownMap, source, property); 2378 } 2379 } 2380 2381 setMap(ownMap); 2382 2383 if (hasLexicalDefinitions) { 2384 assert lexScope != null; 2385 lexScope.setMap(lexicalMap); 2386 invalidateLexicalSwitchPoint(); 2387 } 2388 } 2389 2390 @Override 2391 public GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) { 2392 final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); 2393 final boolean isScope = NashornCallSiteDescriptor.isScope(desc); 2394 2395 if (lexicalScope != null && isScope && !NashornCallSiteDescriptor.isApplyToCall(desc)) { 2396 if (lexicalScope.hasOwnProperty(name)) { 2397 return lexicalScope.findGetMethod(desc, request, operator); 2398 } 2399 } 2400 2401 final GuardedInvocation invocation = super.findGetMethod(desc, request, operator); 2402 2403 // We want to avoid adding our generic lexical scope switchpoint to global constant invocations, 2404 // because those are invalidated per-key in the addBoundProperties method above. 2405 // We therefor check if the invocation does already have a switchpoint and the property is non-inherited, 2406 // assuming this only applies to global constants. If other non-inherited properties will 2407 // start using switchpoints some time in the future we'll have to revisit this. 2408 if (isScope && context.getEnv()._es6 && (invocation.getSwitchPoints() == null || !hasOwnProperty(name))) { 2409 return invocation.addSwitchPoint(getLexicalScopeSwitchPoint()); 2410 } 2411 2412 return invocation; 2413 } 2414 2415 @Override 2416 protected FindProperty findProperty(final String key, final boolean deep, final ScriptObject start) { 2417 if (lexicalScope != null && start != this && start.isScope()) { 2418 final FindProperty find = lexicalScope.findProperty(key, false); 2419 if (find != null) { 2420 return find; 2421 } 2422 } 2423 return super.findProperty(key, deep, start); 2424 } 2425 2426 @Override 2427 public GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) { 2428 final boolean isScope = NashornCallSiteDescriptor.isScope(desc); 2429 2430 if (lexicalScope != null && isScope) { 2431 final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND); 2432 if (lexicalScope.hasOwnProperty(name)) { 2433 return lexicalScope.findSetMethod(desc, request); 2434 } 2435 } 2436 2437 final GuardedInvocation invocation = super.findSetMethod(desc, request); 2438 2439 if (isScope && context.getEnv()._es6) { 2440 return invocation.addSwitchPoint(getLexicalScopeSwitchPoint()); 2441 } 2442 2443 return invocation; 2444 } 2445 2446 /** 2447 * Adds jjs shell interactive mode builtin functions to global scope. 2448 */ 2449 public void addShellBuiltins() { 2450 Object value = ScriptFunctionImpl.makeFunction("input", ShellFunctions.INPUT); 2451 addOwnProperty("input", Attribute.NOT_ENUMERABLE, value); 2452 2453 value = ScriptFunctionImpl.makeFunction("evalinput", ShellFunctions.EVALINPUT); 2454 addOwnProperty("evalinput", Attribute.NOT_ENUMERABLE, value); 2455 } 2456 2457 private synchronized SwitchPoint getLexicalScopeSwitchPoint() { 2458 SwitchPoint switchPoint = lexicalScopeSwitchPoint; 2459 if (switchPoint == null || switchPoint.hasBeenInvalidated()) { 2460 switchPoint = lexicalScopeSwitchPoint = new SwitchPoint(); 2461 } 2462 return switchPoint; 2463 } 2464 2465 private synchronized void invalidateLexicalSwitchPoint() { 2466 if (lexicalScopeSwitchPoint != null) { 2467 context.getLogger(GlobalConstants.class).info("Invalidating non-constant globals on lexical scope update"); 2468 SwitchPoint.invalidateAll(new SwitchPoint[]{ lexicalScopeSwitchPoint }); 2469 } 2470 } 2471 2472 2473 @SuppressWarnings("unused") 2474 private static Object lexicalScopeFilter(final Object self) { 2475 if (self instanceof Global) { 2476 return ((Global) self).getLexicalScope(); 2477 } 2478 return self; 2479 } 2480 2481 private <T extends ScriptObject> T initConstructorAndSwitchPoint(final String name, final Class<T> clazz) { 2482 final T func = initConstructor(name, clazz); 2483 tagBuiltinProperties(name, func); 2484 return func; 2485 } 2486 2487 @SuppressWarnings("hiding") 2488 private void init(final ScriptEngine engine) { 2489 assert Context.getGlobal() == this : "this global is not set as current"; 2490 2491 final ScriptEnvironment env = getContext().getEnv(); 2492 2493 // initialize Function and Object constructor 2494 initFunctionAndObject(); 2495 2496 // Now fix Global's own proto. 2497 this.setInitialProto(getObjectPrototype()); 2498 2499 // initialize global function properties 2500 this.eval = this.builtinEval = ScriptFunctionImpl.makeFunction("eval", EVAL); 2501 2502 this.parseInt = ScriptFunctionImpl.makeFunction("parseInt", GlobalFunctions.PARSEINT, 2503 new Specialization[] { 2504 new Specialization(GlobalFunctions.PARSEINT_Z), 2505 new Specialization(GlobalFunctions.PARSEINT_I), 2506 new Specialization(GlobalFunctions.PARSEINT_J), 2507 new Specialization(GlobalFunctions.PARSEINT_OI), 2508 new Specialization(GlobalFunctions.PARSEINT_O) }); 2509 this.parseFloat = ScriptFunctionImpl.makeFunction("parseFloat", GlobalFunctions.PARSEFLOAT); 2510 this.isNaN = ScriptFunctionImpl.makeFunction("isNaN", GlobalFunctions.IS_NAN, 2511 new Specialization[] { 2512 new Specialization(GlobalFunctions.IS_NAN_I), 2513 new Specialization(GlobalFunctions.IS_NAN_J), 2514 new Specialization(GlobalFunctions.IS_NAN_D) }); 2515 this.parseFloat = ScriptFunctionImpl.makeFunction("parseFloat", GlobalFunctions.PARSEFLOAT); 2516 this.isNaN = ScriptFunctionImpl.makeFunction("isNaN", GlobalFunctions.IS_NAN); 2517 this.isFinite = ScriptFunctionImpl.makeFunction("isFinite", GlobalFunctions.IS_FINITE); 2518 this.encodeURI = ScriptFunctionImpl.makeFunction("encodeURI", GlobalFunctions.ENCODE_URI); 2519 this.encodeURIComponent = ScriptFunctionImpl.makeFunction("encodeURIComponent", GlobalFunctions.ENCODE_URICOMPONENT); 2520 this.decodeURI = ScriptFunctionImpl.makeFunction("decodeURI", GlobalFunctions.DECODE_URI); 2521 this.decodeURIComponent = ScriptFunctionImpl.makeFunction("decodeURIComponent", GlobalFunctions.DECODE_URICOMPONENT); 2522 this.escape = ScriptFunctionImpl.makeFunction("escape", GlobalFunctions.ESCAPE); 2523 this.unescape = ScriptFunctionImpl.makeFunction("unescape", GlobalFunctions.UNESCAPE); 2524 this.print = ScriptFunctionImpl.makeFunction("print", env._print_no_newline ? PRINT : PRINTLN); 2525 this.load = ScriptFunctionImpl.makeFunction("load", LOAD); 2526 this.loadWithNewGlobal = ScriptFunctionImpl.makeFunction("loadWithNewGlobal", LOAD_WITH_NEW_GLOBAL); 2527 this.exit = ScriptFunctionImpl.makeFunction("exit", EXIT); 2528 this.quit = ScriptFunctionImpl.makeFunction("quit", EXIT); 2529 2530 // built-in constructors 2531 this.builtinArray = initConstructorAndSwitchPoint("Array", ScriptFunction.class); 2532 this.builtinBoolean = initConstructorAndSwitchPoint("Boolean", ScriptFunction.class); 2533 this.builtinNumber = initConstructorAndSwitchPoint("Number", ScriptFunction.class); 2534 this.builtinString = initConstructorAndSwitchPoint("String", ScriptFunction.class); 2535 this.builtinMath = initConstructorAndSwitchPoint("Math", ScriptObject.class); 2536 2537 // initialize String.prototype.length to 0 2538 // add String.prototype.length 2539 final ScriptObject stringPrototype = getStringPrototype(); 2540 stringPrototype.addOwnProperty("length", Attribute.NON_ENUMERABLE_CONSTANT, 0.0); 2541 2542 // set isArray flag on Array.prototype 2543 final ScriptObject arrayPrototype = getArrayPrototype(); 2544 arrayPrototype.setIsArray(); 2545 2546 // Error stuff 2547 initErrorObjects(); 2548 2549 // java access 2550 if (! env._no_java) { 2551 this.javaApi = LAZY_SENTINEL; 2552 this.javaImporter = LAZY_SENTINEL; 2553 initJavaAccess(); 2554 } 2555 2556 if (! env._no_typed_arrays) { 2557 this.arrayBuffer = LAZY_SENTINEL; 2558 this.dataView = LAZY_SENTINEL; 2559 this.int8Array = LAZY_SENTINEL; 2560 this.uint8Array = LAZY_SENTINEL; 2561 this.uint8ClampedArray = LAZY_SENTINEL; 2562 this.int16Array = LAZY_SENTINEL; 2563 this.uint16Array = LAZY_SENTINEL; 2564 this.int32Array = LAZY_SENTINEL; 2565 this.uint32Array = LAZY_SENTINEL; 2566 this.float32Array = LAZY_SENTINEL; 2567 this.float64Array = LAZY_SENTINEL; 2568 } 2569 2570 if (env._scripting) { 2571 initScripting(env); 2572 } 2573 2574 if (Context.DEBUG) { 2575 boolean debugOkay; 2576 final SecurityManager sm = System.getSecurityManager(); 2577 if (sm != null) { 2578 try { 2579 sm.checkPermission(new RuntimePermission(Context.NASHORN_DEBUG_MODE)); 2580 debugOkay = true; 2581 } catch (final SecurityException ignored) { 2582 // if no permission, don't initialize Debug object 2583 debugOkay = false; 2584 } 2585 2586 } else { 2587 debugOkay = true; 2588 } 2589 2590 if (debugOkay) { 2591 initDebug(); 2592 } 2593 } 2594 2595 copyBuiltins(); 2596 2597 // expose script (command line) arguments as "arguments" property of global 2598 arguments = wrapAsObject(env.getArguments().toArray()); 2599 if (env._scripting) { 2600 // synonym for "arguments" in scripting mode 2601 addOwnProperty("$ARG", Attribute.NOT_ENUMERABLE, arguments); 2602 } 2603 2604 if (engine != null) { 2605 // default file name 2606 addOwnProperty(ScriptEngine.FILENAME, Attribute.NOT_ENUMERABLE, null); 2607 // __noSuchProperty__ hook for ScriptContext search of missing variables 2608 final ScriptFunction noSuchProp = ScriptFunctionImpl.makeStrictFunction(NO_SUCH_PROPERTY_NAME, NO_SUCH_PROPERTY); 2609 addOwnProperty(NO_SUCH_PROPERTY_NAME, Attribute.NOT_ENUMERABLE, noSuchProp); 2610 } 2611 } 2612 2613 private void initErrorObjects() { 2614 // Error objects 2615 this.builtinError = initConstructor("Error", ScriptFunction.class); 2616 final ScriptObject errorProto = getErrorPrototype(); 2617 2618 // Nashorn specific accessors on Error.prototype - stack, lineNumber, columnNumber and fileName 2619 final ScriptFunction getStack = ScriptFunctionImpl.makeFunction("getStack", NativeError.GET_STACK); 2620 final ScriptFunction setStack = ScriptFunctionImpl.makeFunction("setStack", NativeError.SET_STACK); 2621 errorProto.addOwnProperty("stack", Attribute.NOT_ENUMERABLE, getStack, setStack); 2622 final ScriptFunction getLineNumber = ScriptFunctionImpl.makeFunction("getLineNumber", NativeError.GET_LINENUMBER); 2623 final ScriptFunction setLineNumber = ScriptFunctionImpl.makeFunction("setLineNumber", NativeError.SET_LINENUMBER); 2624 errorProto.addOwnProperty("lineNumber", Attribute.NOT_ENUMERABLE, getLineNumber, setLineNumber); 2625 final ScriptFunction getColumnNumber = ScriptFunctionImpl.makeFunction("getColumnNumber", NativeError.GET_COLUMNNUMBER); 2626 final ScriptFunction setColumnNumber = ScriptFunctionImpl.makeFunction("setColumnNumber", NativeError.SET_COLUMNNUMBER); 2627 errorProto.addOwnProperty("columnNumber", Attribute.NOT_ENUMERABLE, getColumnNumber, setColumnNumber); 2628 final ScriptFunction getFileName = ScriptFunctionImpl.makeFunction("getFileName", NativeError.GET_FILENAME); 2629 final ScriptFunction setFileName = ScriptFunctionImpl.makeFunction("setFileName", NativeError.SET_FILENAME); 2630 errorProto.addOwnProperty("fileName", Attribute.NOT_ENUMERABLE, getFileName, setFileName); 2631 2632 // ECMA 15.11.4.2 Error.prototype.name 2633 // Error.prototype.name = "Error"; 2634 errorProto.set(NativeError.NAME, "Error", 0); 2635 // ECMA 15.11.4.3 Error.prototype.message 2636 // Error.prototype.message = ""; 2637 errorProto.set(NativeError.MESSAGE, "", 0); 2638 2639 tagBuiltinProperties("Error", builtinError); 2640 2641 this.builtinReferenceError = initErrorSubtype("ReferenceError", errorProto); 2642 this.builtinSyntaxError = initErrorSubtype("SyntaxError", errorProto); 2643 this.builtinTypeError = initErrorSubtype("TypeError", errorProto); 2644 } 2645 2646 private ScriptFunction initErrorSubtype(final String name, final ScriptObject errorProto) { 2647 final ScriptFunction cons = initConstructor(name, ScriptFunction.class); 2648 final ScriptObject prototype = ScriptFunction.getPrototype(cons); 2649 prototype.set(NativeError.NAME, name, 0); 2650 prototype.set(NativeError.MESSAGE, "", 0); 2651 prototype.setInitialProto(errorProto); 2652 tagBuiltinProperties(name, cons); 2653 return cons; 2654 } 2655 2656 private void initJavaAccess() { 2657 final ScriptObject objectProto = getObjectPrototype(); 2658 this.builtinPackages = new NativeJavaPackage("", objectProto); 2659 this.builtinCom = new NativeJavaPackage("com", objectProto); 2660 this.builtinEdu = new NativeJavaPackage("edu", objectProto); 2661 this.builtinJava = new NativeJavaPackage("java", objectProto); 2662 this.builtinJavafx = new NativeJavaPackage("javafx", objectProto); 2663 this.builtinJavax = new NativeJavaPackage("javax", objectProto); 2664 this.builtinOrg = new NativeJavaPackage("org", objectProto); 2665 } 2666 2667 private void initScripting(final ScriptEnvironment scriptEnv) { 2668 Object value; 2669 value = ScriptFunctionImpl.makeFunction("readLine", ScriptingFunctions.READLINE); 2670 addOwnProperty("readLine", Attribute.NOT_ENUMERABLE, value); 2671 2672 value = ScriptFunctionImpl.makeFunction("readFully", ScriptingFunctions.READFULLY); 2673 addOwnProperty("readFully", Attribute.NOT_ENUMERABLE, value); 2674 2675 final String execName = ScriptingFunctions.EXEC_NAME; 2676 value = ScriptFunctionImpl.makeFunction(execName, ScriptingFunctions.EXEC); 2677 addOwnProperty(execName, Attribute.NOT_ENUMERABLE, value); 2678 2679 // Nashorn extension: global.echo (scripting-mode-only) 2680 // alias for "print" 2681 value = get("print"); 2682 addOwnProperty("echo", Attribute.NOT_ENUMERABLE, value); 2683 2684 // Nashorn extension: global.$OPTIONS (scripting-mode-only) 2685 final ScriptObject options = newObject(); 2686 copyOptions(options, scriptEnv); 2687 addOwnProperty("$OPTIONS", Attribute.NOT_ENUMERABLE, options); 2688 2689 // Nashorn extension: global.$ENV (scripting-mode-only) 2690 if (System.getSecurityManager() == null) { 2691 // do not fill $ENV if we have a security manager around 2692 // Retrieve current state of ENV variables. 2693 final ScriptObject env = newObject(); 2694 env.putAll(System.getenv(), scriptEnv._strict); 2695 addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, env); 2696 } else { 2697 addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED); 2698 } 2699 2700 // add other special properties for exec support 2701 addOwnProperty(ScriptingFunctions.OUT_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED); 2702 addOwnProperty(ScriptingFunctions.ERR_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED); 2703 addOwnProperty(ScriptingFunctions.EXIT_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED); 2704 } 2705 2706 private static void copyOptions(final ScriptObject options, final ScriptEnvironment scriptEnv) { 2707 for (final Field f : scriptEnv.getClass().getFields()) { 2708 try { 2709 options.set(f.getName(), f.get(scriptEnv), 0); 2710 } catch (final IllegalArgumentException | IllegalAccessException exp) { 2711 throw new RuntimeException(exp); 2712 } 2713 } 2714 } 2715 2716 private void copyBuiltins() { 2717 this.array = this.builtinArray; 2718 this._boolean = this.builtinBoolean; 2719 this.error = this.builtinError; 2720 this.function = this.builtinFunction; 2721 this.com = this.builtinCom; 2722 this.edu = this.builtinEdu; 2723 this.java = this.builtinJava; 2724 this.javafx = this.builtinJavafx; 2725 this.javax = this.builtinJavax; 2726 this.org = this.builtinOrg; 2727 this.math = this.builtinMath; 2728 this.number = this.builtinNumber; 2729 this.object = this.builtinObject; 2730 this.packages = this.builtinPackages; 2731 this.referenceError = this.builtinReferenceError; 2732 this.string = this.builtinString; 2733 this.syntaxError = this.builtinSyntaxError; 2734 this.typeError = this.builtinTypeError; 2735 } 2736 2737 private void initDebug() { 2738 this.addOwnProperty("Debug", Attribute.NOT_ENUMERABLE, initConstructor("Debug", ScriptObject.class)); 2739 } 2740 2741 private Object printImpl(final boolean newLine, final Object... objects) { 2742 @SuppressWarnings("resource") 2743 final PrintWriter out = scontext != null? new PrintWriter(scontext.getWriter()) : getContext().getEnv().getOut(); 2744 final StringBuilder sb = new StringBuilder(); 2745 2746 for (final Object obj : objects) { 2747 if (sb.length() != 0) { 2748 sb.append(' '); 2749 } 2750 2751 sb.append(JSType.toString(obj)); 2752 } 2753 2754 // Print all at once to ensure thread friendly result. 2755 if (newLine) { 2756 out.println(sb.toString()); 2757 } else { 2758 out.print(sb.toString()); 2759 } 2760 2761 out.flush(); 2762 2763 return UNDEFINED; 2764 } 2765 2766 private <T extends ScriptObject> T initConstructor(final String name, final Class<T> clazz) { 2767 try { 2768 // Assuming class name pattern for built-in JS constructors. 2769 final StringBuilder sb = new StringBuilder("jdk.nashorn.internal.objects."); 2770 2771 sb.append("Native"); 2772 sb.append(name); 2773 sb.append("$Constructor"); 2774 2775 final Class<?> funcClass = Class.forName(sb.toString()); 2776 final T res = clazz.cast(funcClass.newInstance()); 2777 2778 if (res instanceof ScriptFunction) { 2779 // All global constructor prototypes are not-writable, 2780 // not-enumerable and not-configurable. 2781 final ScriptFunction func = (ScriptFunction)res; 2782 func.modifyOwnProperty(func.getProperty("prototype"), Attribute.NON_ENUMERABLE_CONSTANT); 2783 } 2784 2785 if (res.getProto() == null) { 2786 res.setInitialProto(getObjectPrototype()); 2787 } 2788 2789 res.setIsBuiltin(); 2790 2791 return res; 2792 } catch (final ClassNotFoundException | InstantiationException | IllegalAccessException e) { 2793 throw new RuntimeException(e); 2794 } 2795 } 2796 2797 private List<jdk.nashorn.internal.runtime.Property> extractBuiltinProperties(final String name, final ScriptObject func) { 2798 final List<jdk.nashorn.internal.runtime.Property> list = new ArrayList<>(); 2799 2800 list.addAll(Arrays.asList(func.getMap().getProperties())); 2801 2802 if (func instanceof ScriptFunction) { 2803 final ScriptObject proto = ScriptFunction.getPrototype((ScriptFunction)func); 2804 if (proto != null) { 2805 list.addAll(Arrays.asList(proto.getMap().getProperties())); 2806 } 2807 } 2808 2809 final jdk.nashorn.internal.runtime.Property prop = getProperty(name); 2810 if (prop != null) { 2811 list.add(prop); 2812 } 2813 2814 return list; 2815 } 2816 2817 /** 2818 * Given a builtin object, traverse its properties recursively and associate them with a name that 2819 * will be a key to their invalidation switchpoint. 2820 * @param name name for key 2821 * @param func builtin script object 2822 */ 2823 private void tagBuiltinProperties(final String name, final ScriptObject func) { 2824 SwitchPoint sp = context.getBuiltinSwitchPoint(name); 2825 if (sp == null) { 2826 sp = context.newBuiltinSwitchPoint(name); 2827 } 2828 2829 //get all builtin properties in this builtin object and register switchpoints keyed on the propery name, 2830 //one overwrite destroys all for now, e.g. Function.prototype.apply = 17; also destroys Function.prototype.call etc 2831 for (final jdk.nashorn.internal.runtime.Property prop : extractBuiltinProperties(name, func)) { 2832 prop.setBuiltinSwitchPoint(sp); 2833 } 2834 } 2835 2836 // Function and Object constructors are inter-dependent. Also, 2837 // Function.prototype 2838 // functions are not properly initialized. We fix the references here. 2839 // NOTE: be careful if you want to re-order the operations here. You may 2840 // have 2841 // to play with object references carefully!! 2842 private void initFunctionAndObject() { 2843 // First-n-foremost is Function 2844 2845 this.builtinFunction = initConstructor("Function", ScriptFunction.class); 2846 2847 // create global anonymous function 2848 final ScriptFunction anon = ScriptFunctionImpl.newAnonymousFunction(); 2849 // need to copy over members of Function.prototype to anon function 2850 anon.addBoundProperties(getFunctionPrototype()); 2851 2852 // Function.prototype === Object.getPrototypeOf(Function) === 2853 // <anon-function> 2854 builtinFunction.setInitialProto(anon); 2855 builtinFunction.setPrototype(anon); 2856 anon.set("constructor", builtinFunction, 0); 2857 anon.deleteOwnProperty(anon.getMap().findProperty("prototype")); 2858 2859 // use "getter" so that [[ThrowTypeError]] function's arity is 0 - as specified in step 10 of section 13.2.3 2860 this.typeErrorThrower = new ScriptFunctionImpl("TypeErrorThrower", Lookup.TYPE_ERROR_THROWER_GETTER, null, null, 0); 2861 typeErrorThrower.setPrototype(UNDEFINED); 2862 // Non-constructor built-in functions do not have "prototype" property 2863 typeErrorThrower.deleteOwnProperty(typeErrorThrower.getMap().findProperty("prototype")); 2864 typeErrorThrower.preventExtensions(); 2865 2866 // now initialize Object 2867 this.builtinObject = initConstructor("Object", ScriptFunction.class); 2868 final ScriptObject ObjectPrototype = getObjectPrototype(); 2869 // Object.getPrototypeOf(Function.prototype) === Object.prototype 2870 anon.setInitialProto(ObjectPrototype); 2871 2872 // ES6 draft compliant __proto__ property of Object.prototype 2873 // accessors on Object.prototype for "__proto__" 2874 final ScriptFunction getProto = ScriptFunctionImpl.makeFunction("getProto", NativeObject.GET__PROTO__); 2875 final ScriptFunction setProto = ScriptFunctionImpl.makeFunction("setProto", NativeObject.SET__PROTO__); 2876 ObjectPrototype.addOwnProperty("__proto__", Attribute.NOT_ENUMERABLE, getProto, setProto); 2877 2878 // Function valued properties of Function.prototype were not properly 2879 // initialized. Because, these were created before global.function and 2880 // global.object were not initialized. 2881 jdk.nashorn.internal.runtime.Property[] properties = getFunctionPrototype().getMap().getProperties(); 2882 for (final jdk.nashorn.internal.runtime.Property property : properties) { 2883 final Object key = property.getKey(); 2884 final Object value = builtinFunction.get(key); 2885 2886 if (value instanceof ScriptFunction && value != anon) { 2887 final ScriptFunction func = (ScriptFunction)value; 2888 func.setInitialProto(getFunctionPrototype()); 2889 final ScriptObject prototype = ScriptFunction.getPrototype(func); 2890 if (prototype != null) { 2891 prototype.setInitialProto(ObjectPrototype); 2892 } 2893 } 2894 } 2895 2896 // For function valued properties of Object and Object.prototype, make 2897 // sure prototype's proto chain ends with Object.prototype 2898 for (final jdk.nashorn.internal.runtime.Property property : builtinObject.getMap().getProperties()) { 2899 final Object key = property.getKey(); 2900 final Object value = builtinObject.get(key); 2901 2902 if (value instanceof ScriptFunction) { 2903 final ScriptFunction func = (ScriptFunction)value; 2904 final ScriptObject prototype = ScriptFunction.getPrototype(func); 2905 if (prototype != null) { 2906 prototype.setInitialProto(ObjectPrototype); 2907 } 2908 } 2909 } 2910 2911 properties = getObjectPrototype().getMap().getProperties(); 2912 2913 for (final jdk.nashorn.internal.runtime.Property property : properties) { 2914 final Object key = property.getKey(); 2915 if (key.equals("constructor")) { 2916 continue; 2917 } 2918 2919 final Object value = ObjectPrototype.get(key); 2920 if (value instanceof ScriptFunction) { 2921 final ScriptFunction func = (ScriptFunction)value; 2922 final ScriptObject prototype = ScriptFunction.getPrototype(func); 2923 if (prototype != null) { 2924 prototype.setInitialProto(ObjectPrototype); 2925 } 2926 } 2927 } 2928 2929 tagBuiltinProperties("Object", builtinObject); 2930 tagBuiltinProperties("Function", builtinFunction); 2931 tagBuiltinProperties("Function", anon); 2932 } 2933 2934 private static MethodHandle findOwnMH_S(final String name, final Class<?> rtype, final Class<?>... types) { 2935 return MH.findStatic(MethodHandles.lookup(), Global.class, name, MH.type(rtype, types)); 2936 } 2937 2938 RegExpResult getLastRegExpResult() { 2939 return lastRegExpResult; 2940 } 2941 2942 void setLastRegExpResult(final RegExpResult regExpResult) { 2943 this.lastRegExpResult = regExpResult; 2944 } 2945 2946 @Override 2947 protected boolean isGlobal() { 2948 return true; 2949 } 2950 2951 /** 2952 * A class representing the ES6 global lexical scope. 2953 */ 2954 private static class LexicalScope extends ScriptObject { 2955 2956 LexicalScope(final Global global) { 2957 super(global, PropertyMap.newMap()); 2958 } 2959 2960 @Override 2961 protected GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) { 2962 return filterInvocation(super.findGetMethod(desc, request, operator)); 2963 } 2964 2965 @Override 2966 protected GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) { 2967 return filterInvocation(super.findSetMethod(desc, request)); 2968 } 2969 2970 @Override 2971 protected PropertyMap addBoundProperty(final PropertyMap propMap, final ScriptObject source, final jdk.nashorn.internal.runtime.Property property) { 2972 // We override this method just to make it callable by Global 2973 return super.addBoundProperty(propMap, source, property); 2974 } 2975 2976 private static GuardedInvocation filterInvocation(final GuardedInvocation invocation) { 2977 final MethodType type = invocation.getInvocation().type(); 2978 return invocation.asType(type.changeParameterType(0, Object.class)).filterArguments(0, LEXICAL_SCOPE_FILTER); 2979 } 2980 } 2981 2982 }