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 ThreadLocal<ScriptContext> scontext;
932 // current ScriptEngine associated - can be null.
933 private ScriptEngine engine;
934 // initial ScriptContext - can be null
935 private volatile ScriptContext initscontext;
936
937 // ES6 global lexical scope.
938 private final LexicalScope lexicalScope;
939
940 // Switchpoint for non-constant global callsites in the presence of ES6 lexical scope.
941 private SwitchPoint lexicalScopeSwitchPoint;
942
943 /**
944 * Set the current script context
945 * @param ctxt script context
946 */
947 public void setScriptContext(final ScriptContext ctxt) {
948 assert scontext != null;
949 scontext.set(ctxt);
950 }
951
952 /**
953 * Get the current script context
954 * @return current script context
955 */
956 public ScriptContext getScriptContext() {
957 assert scontext != null;
958 return scontext.get();
959 }
960
961 private ScriptContext currentContext() {
962 final ScriptContext sc = scontext != null? scontext.get() : null;
963 return sc == null? initscontext : sc;
964 }
965
966 @Override
967 protected Context getContext() {
968 return context;
969 }
970
971 @Override
972 protected boolean useDualFields() {
973 return context.useDualFields();
974 }
975
976 // performs initialization checks for Global constructor and returns the
977 // PropertyMap, if everything is fine.
978 private static PropertyMap checkAndGetMap(final Context context) {
979 // security check first
980 final SecurityManager sm = System.getSecurityManager();
981 if (sm != null) {
982 sm.checkPermission(new RuntimePermission(Context.NASHORN_CREATE_GLOBAL));
983 }
984
985 Objects.requireNonNull(context);
986
987 return $nasgenmap$;
988 }
989
990 /**
991 * Constructor
992 *
993 * @param context the context
994 */
995 public Global(final Context context) {
996 super(checkAndGetMap(context));
997 this.context = context;
998 this.setIsScope();
999 this.lexicalScope = context.getEnv()._es6 ? new LexicalScope(this) : null;
1000 }
1001
1002 /**
1003 * Script access to "current" Global instance
1004 *
1005 * @return the global singleton
1006 */
1007 public static Global instance() {
1008 final Global global = Context.getGlobal();
1009 Objects.requireNonNull(global);
1010 return global;
1011 }
1012
1013 private static Global instanceFrom(final Object self) {
1014 return self instanceof Global? (Global)self : instance();
1015 }
1016
1017 /**
1018 * Check if we have a Global instance
1019 * @return true if one exists
1020 */
1021 public static boolean hasInstance() {
1022 return Context.getGlobal() != null;
1023 }
1024
1025 /**
1026 * Script access to {@link ScriptEnvironment}
1027 *
1028 * @return the script environment
1029 */
1030 static ScriptEnvironment getEnv() {
1031 return instance().getContext().getEnv();
1032 }
1033
1034 /**
1035 * Script access to {@link Context}
1036 *
1037 * @return the context
1038 */
1039 static Context getThisContext() {
1040 return instance().getContext();
1041 }
1042
1043 // Runtime interface to Global
1044
1045 /**
1046 * Is there a class filter in the current Context?
1047 * @return class filter
1048 */
1049 public ClassFilter getClassFilter() {
1050 return context.getClassFilter();
1051 }
1052
1053 /**
1054 * Is this global of the given Context?
1055 * @param ctxt the context
1056 * @return true if this global belongs to the given Context
1057 */
1058 public boolean isOfContext(final Context ctxt) {
1059 return this.context == ctxt;
1060 }
1061
1062 /**
1063 * Does this global belong to a strict Context?
1064 * @return true if this global belongs to a strict Context
1065 */
1066 public boolean isStrictContext() {
1067 return context.getEnv()._strict;
1068 }
1069
1070 /**
1071 * Initialize standard builtin objects like "Object", "Array", "Function" etc.
1072 * as well as our extension builtin objects like "Java", "JSAdapter" as properties
1073 * of the global scope object.
1074 *
1075 * @param eng ScriptEngine to initialize
1076 * @param ctxt ScriptContext to initialize
1077 */
1078 public void initBuiltinObjects(final ScriptEngine eng, final ScriptContext ctxt) {
1079 if (this.builtinObject != null) {
1080 // already initialized, just return
1081 return;
1082 }
1083
1084 this.engine = eng;
1085 this.initscontext = ctxt;
1086 if (this.engine != null) {
1087 this.scontext = new ThreadLocal<>();
1088 }
1089 init(eng);
1090 }
1091
1092 /**
1093 * Wrap a Java object as corresponding script object
1094 *
1095 * @param obj object to wrap
1096 * @return wrapped object
1097 */
1098 public Object wrapAsObject(final Object obj) {
1099 if (obj instanceof Boolean) {
1100 return new NativeBoolean((Boolean)obj, this);
1101 } else if (obj instanceof Number) {
1102 return new NativeNumber(((Number)obj).doubleValue(), this);
1103 } else if (isString(obj)) {
1104 return new NativeString((CharSequence)obj, this);
1105 } else if (obj instanceof Object[]) { // extension
1106 return new NativeArray(ArrayData.allocate((Object[])obj), this);
1107 } else if (obj instanceof double[]) { // extension
1108 return new NativeArray(ArrayData.allocate((double[])obj), this);
1109 } else if (obj instanceof long[]) {
1110 return new NativeArray(ArrayData.allocate((long[])obj), this);
1111 } else if (obj instanceof int[]) {
1112 return new NativeArray(ArrayData.allocate((int[]) obj), this);
1113 } else if (obj instanceof ArrayData) {
1114 return new NativeArray((ArrayData) obj, this);
1115 } else {
1116 // FIXME: more special cases? Map? List?
1117 return obj;
1118 }
1119 }
1120
1121 /**
1122 * Lookup helper for JS primitive types
1123 *
1124 * @param request the link request for the dynamic call site.
1125 * @param self self reference
1126 *
1127 * @return guarded invocation
1128 */
1129 public static GuardedInvocation primitiveLookup(final LinkRequest request, final Object self) {
1130 if (isString(self)) {
1131 return NativeString.lookupPrimitive(request, self);
1132 } else if (self instanceof Number) {
1133 return NativeNumber.lookupPrimitive(request, self);
1134 } else if (self instanceof Boolean) {
1135 return NativeBoolean.lookupPrimitive(request, self);
1136 }
1137 throw new IllegalArgumentException("Unsupported primitive: " + self);
1138 }
1139
1140 /**
1141 * Returns a method handle that creates a wrapper object for a JS primitive value.
1142 *
1143 * @param self receiver object
1144 * @return method handle to create wrapper objects for primitive receiver
1145 */
1146 public static MethodHandle getPrimitiveWrapFilter(final Object self) {
1147 if (isString(self)) {
1148 return NativeString.WRAPFILTER;
1149 } else if (self instanceof Number) {
1150 return NativeNumber.WRAPFILTER;
1151 } else if (self instanceof Boolean) {
1152 return NativeBoolean.WRAPFILTER;
1153 }
1154 throw new IllegalArgumentException("Unsupported primitive: " + self);
1155 }
1156
1157
1158 /**
1159 * Create a new empty script object
1160 *
1161 * @return the new ScriptObject
1162 */
1163 public ScriptObject newObject() {
1164 return useDualFields() ? new JD(getObjectPrototype()) : new JO(getObjectPrototype());
1165 }
1166
1167 /**
1168 * Default value of given type
1169 *
1170 * @param sobj script object
1171 * @param typeHint type hint
1172 *
1173 * @return default value
1174 */
1175 public Object getDefaultValue(final ScriptObject sobj, final Class<?> typeHint) {
1176 // When the [[DefaultValue]] internal method of O is called with no hint,
1177 // then it behaves as if the hint were Number, unless O is a Date object
1178 // in which case it behaves as if the hint were String.
1179 Class<?> hint = typeHint;
1180 if (hint == null) {
1181 hint = Number.class;
1182 }
1183
1184 try {
1185 if (hint == String.class) {
1186
1187 final Object toString = TO_STRING.getGetter().invokeExact(sobj);
1188
1189 if (Bootstrap.isCallable(toString)) {
1190 final Object value = TO_STRING.getInvoker().invokeExact(toString, sobj);
1191 if (JSType.isPrimitive(value)) {
1192 return value;
1193 }
1194 }
1195
1196 final Object valueOf = VALUE_OF.getGetter().invokeExact(sobj);
1197 if (Bootstrap.isCallable(valueOf)) {
1198 final Object value = VALUE_OF.getInvoker().invokeExact(valueOf, sobj);
1199 if (JSType.isPrimitive(value)) {
1200 return value;
1201 }
1202 }
1203 throw typeError(this, "cannot.get.default.string");
1204 }
1205
1206 if (hint == Number.class) {
1207 final Object valueOf = VALUE_OF.getGetter().invokeExact(sobj);
1208 if (Bootstrap.isCallable(valueOf)) {
1209 final Object value = VALUE_OF.getInvoker().invokeExact(valueOf, sobj);
1210 if (JSType.isPrimitive(value)) {
1211 return value;
1212 }
1213 }
1214
1215 final Object toString = TO_STRING.getGetter().invokeExact(sobj);
1216 if (Bootstrap.isCallable(toString)) {
1217 final Object value = TO_STRING.getInvoker().invokeExact(toString, sobj);
1218 if (JSType.isPrimitive(value)) {
1219 return value;
1220 }
1221 }
1222
1223 throw typeError(this, "cannot.get.default.number");
1224 }
1225 } catch (final RuntimeException | Error e) {
1226 throw e;
1227 } catch (final Throwable t) {
1228 throw new RuntimeException(t);
1229 }
1230
1231 return UNDEFINED;
1232 }
1233
1234 /**
1235 * Is the given ScriptObject an ECMAScript Error object?
1236 *
1237 * @param sobj the object being checked
1238 * @return true if sobj is an Error object
1239 */
1240 public boolean isError(final ScriptObject sobj) {
1241 final ScriptObject errorProto = getErrorPrototype();
1242 ScriptObject proto = sobj.getProto();
1243 while (proto != null) {
1244 if (proto == errorProto) {
1245 return true;
1246 }
1247 proto = proto.getProto();
1248 }
1249 return false;
1250 }
1251
1252 /**
1253 * Create a new ECMAScript Error object.
1254 *
1255 * @param msg error message
1256 * @return newly created Error object
1257 */
1258 public ScriptObject newError(final String msg) {
1259 return new NativeError(msg, this);
1260 }
1261
1262 /**
1263 * Create a new ECMAScript EvalError object.
1264 *
1265 * @param msg error message
1266 * @return newly created EvalError object
1267 */
1268 public ScriptObject newEvalError(final String msg) {
1269 return new NativeEvalError(msg, this);
1270 }
1271
1272 /**
1273 * Create a new ECMAScript RangeError object.
1274 *
1275 * @param msg error message
1276 * @return newly created RangeError object
1277 */
1278 public ScriptObject newRangeError(final String msg) {
1279 return new NativeRangeError(msg, this);
1280 }
1281
1282 /**
1283 * Create a new ECMAScript ReferenceError object.
1284 *
1285 * @param msg error message
1286 * @return newly created ReferenceError object
1287 */
1288 public ScriptObject newReferenceError(final String msg) {
1289 return new NativeReferenceError(msg, this);
1290 }
1291
1292 /**
1293 * Create a new ECMAScript SyntaxError object.
1294 *
1295 * @param msg error message
1296 * @return newly created SyntaxError object
1297 */
1298 public ScriptObject newSyntaxError(final String msg) {
1299 return new NativeSyntaxError(msg, this);
1300 }
1301
1302 /**
1303 * Create a new ECMAScript TypeError object.
1304 *
1305 * @param msg error message
1306 * @return newly created TypeError object
1307 */
1308 public ScriptObject newTypeError(final String msg) {
1309 return new NativeTypeError(msg, this);
1310 }
1311
1312 /**
1313 * Create a new ECMAScript URIError object.
1314 *
1315 * @param msg error message
1316 * @return newly created URIError object
1317 */
1318 public ScriptObject newURIError(final String msg) {
1319 return new NativeURIError(msg, this);
1320 }
1321
1322 /**
1323 * Create a new ECMAScript GenericDescriptor object.
1324 *
1325 * @param configurable is the property configurable?
1326 * @param enumerable is the property enumerable?
1327 * @return newly created GenericDescriptor object
1328 */
1329 public PropertyDescriptor newGenericDescriptor(final boolean configurable, final boolean enumerable) {
1330 return new GenericPropertyDescriptor(configurable, enumerable, this);
1331 }
1332
1333 /**
1334 * Create a new ECMAScript DatePropertyDescriptor object.
1335 *
1336 * @param value of the data property
1337 * @param configurable is the property configurable?
1338 * @param enumerable is the property enumerable?
1339 * @param writable is the property writable?
1340 * @return newly created DataPropertyDescriptor object
1341 */
1342 public PropertyDescriptor newDataDescriptor(final Object value, final boolean configurable, final boolean enumerable, final boolean writable) {
1343 return new DataPropertyDescriptor(configurable, enumerable, writable, value, this);
1344 }
1345
1346 /**
1347 * Create a new ECMAScript AccessorPropertyDescriptor object.
1348 *
1349 * @param get getter function of the user accessor property
1350 * @param set setter function of the user accessor property
1351 * @param configurable is the property configurable?
1352 * @param enumerable is the property enumerable?
1353 * @return newly created AccessorPropertyDescriptor object
1354 */
1355 public PropertyDescriptor newAccessorDescriptor(final Object get, final Object set, final boolean configurable, final boolean enumerable) {
1356 final AccessorPropertyDescriptor desc = new AccessorPropertyDescriptor(configurable, enumerable, get == null ? UNDEFINED : get, set == null ? UNDEFINED : set, this);
1357
1358 if (get == null) {
1359 desc.delete(PropertyDescriptor.GET, false);
1360 }
1361
1362 if (set == null) {
1363 desc.delete(PropertyDescriptor.SET, false);
1364 }
1365
1366 return desc;
1367 }
1368
1369 private static <T> T getLazilyCreatedValue(final Object key, final Callable<T> creator, final Map<Object, T> map) {
1370 final T obj = map.get(key);
1371 if (obj != null) {
1372 return obj;
1373 }
1374
1375 try {
1376 final T newObj = creator.call();
1377 final T existingObj = map.putIfAbsent(key, newObj);
1378 return existingObj != null ? existingObj : newObj;
1379 } catch (final Exception exp) {
1380 throw new RuntimeException(exp);
1381 }
1382 }
1383
1384 private final Map<Object, InvokeByName> namedInvokers = new ConcurrentHashMap<>();
1385
1386
1387 /**
1388 * Get cached InvokeByName object for the given key
1389 * @param key key to be associated with InvokeByName object
1390 * @param creator if InvokeByName is absent 'creator' is called to make one (lazy init)
1391 * @return InvokeByName object associated with the key.
1392 */
1393 public InvokeByName getInvokeByName(final Object key, final Callable<InvokeByName> creator) {
1394 return getLazilyCreatedValue(key, creator, namedInvokers);
1395 }
1396
1397 private final Map<Object, MethodHandle> dynamicInvokers = new ConcurrentHashMap<>();
1398
1399 /**
1400 * Get cached dynamic method handle for the given key
1401 * @param key key to be associated with dynamic method handle
1402 * @param creator if method handle is absent 'creator' is called to make one (lazy init)
1403 * @return dynamic method handle associated with the key.
1404 */
1405 public MethodHandle getDynamicInvoker(final Object key, final Callable<MethodHandle> creator) {
1406 return getLazilyCreatedValue(key, creator, dynamicInvokers);
1407 }
1408
1409 /**
1410 * Hook to search missing variables in ScriptContext if available
1411 * @param self used to detect if scope call or not (this function is 'strict')
1412 * @param name name of the variable missing
1413 * @return value of the missing variable or undefined (or TypeError for scope search)
1414 */
1415 public static Object __noSuchProperty__(final Object self, final Object name) {
1416 final Global global = Global.instance();
1417 final ScriptContext sctxt = global.currentContext();
1418 final String nameStr = name.toString();
1419
1420 if (sctxt != null) {
1421 final int scope = sctxt.getAttributesScope(nameStr);
1422 if (scope != -1) {
1423 return ScriptObjectMirror.unwrap(sctxt.getAttribute(nameStr, scope), global);
1424 }
1425 }
1426
1427 switch (nameStr) {
1428 case "context":
1429 return sctxt;
1430 case "engine":
1431 return global.engine;
1432 default:
1433 break;
1434 }
1435
1436 if (self == UNDEFINED) {
1437 // scope access and so throw ReferenceError
1438 throw referenceError(global, "not.defined", nameStr);
1439 }
1440
1441 return UNDEFINED;
1442 }
1443
1444 /**
1445 * This is the eval used when 'indirect' eval call is made.
1446 *
1447 * var global = this;
1448 * global.eval("print('hello')");
1449 *
1450 * @param self eval scope
1451 * @param str eval string
1452 *
1453 * @return the result of eval
1454 */
1455 public static Object eval(final Object self, final Object str) {
1456 return directEval(self, str, UNDEFINED, UNDEFINED, false);
1457 }
1458
1459 /**
1460 * Direct eval
1461 *
1462 * @param self The scope of eval passed as 'self'
1463 * @param str Evaluated code
1464 * @param callThis "this" to be passed to the evaluated code
1465 * @param location location of the eval call
1466 * @param strict is eval called a strict mode code?
1467 *
1468 * @return the return value of the eval
1469 *
1470 * This is directly invoked from generated when eval(code) is called in user code
1471 */
1472 public static Object directEval(final Object self, final Object str, final Object callThis, final Object location, final boolean strict) {
1473 if (!isString(str)) {
1474 return str;
1475 }
1476 final Global global = Global.instanceFrom(self);
1477 final ScriptObject scope = self instanceof ScriptObject && ((ScriptObject)self).isScope() ? (ScriptObject)self : global;
1478
1479 return global.getContext().eval(scope, str.toString(), callThis, location, strict, true);
1480 }
1481
1482 /**
1483 * Global print implementation - Nashorn extension
1484 *
1485 * @param self scope
1486 * @param objects arguments to print
1487 *
1488 * @return result of print (undefined)
1489 */
1490 public static Object print(final Object self, final Object... objects) {
1491 return Global.instanceFrom(self).printImpl(false, objects);
1492 }
1493
1494 /**
1495 * Global println implementation - Nashorn extension
1496 *
1497 * @param self scope
1498 * @param objects arguments to print
1499 *
1500 * @return result of println (undefined)
1501 */
1502 public static Object println(final Object self, final Object... objects) {
1503 return Global.instanceFrom(self).printImpl(true, objects);
1504 }
1505
1506 /**
1507 * Global load implementation - Nashorn extension
1508 *
1509 * @param self scope
1510 * @param source source to load
1511 *
1512 * @return result of load (undefined)
1513 *
1514 * @throws IOException if source could not be read
1515 */
1516 public static Object load(final Object self, final Object source) throws IOException {
1517 final Global global = Global.instanceFrom(self);
1518 final ScriptObject scope = self instanceof ScriptObject ? (ScriptObject)self : global;
1519 return global.getContext().load(scope, source);
1520 }
1521
1522 /**
1523 * Global loadWithNewGlobal implementation - Nashorn extension
1524 *
1525 * @param self scope
1526 * @param args from plus (optional) arguments to be passed to the loaded script
1527 *
1528 * @return result of load (may be undefined)
1529 *
1530 * @throws IOException if source could not be read
1531 */
1532 public static Object loadWithNewGlobal(final Object self, final Object...args) throws IOException {
1533 final Global global = Global.instanceFrom(self);
1534 final int length = args.length;
1535 final boolean hasArgs = 0 < length;
1536 final Object from = hasArgs ? args[0] : UNDEFINED;
1537 final Object[] arguments = hasArgs ? Arrays.copyOfRange(args, 1, length) : args;
1538
1539 return global.getContext().loadWithNewGlobal(from, arguments);
1540 }
1541
1542 /**
1543 * Global exit and quit implementation - Nashorn extension: perform a {@code System.exit} call from the script
1544 *
1545 * @param self self reference
1546 * @param code exit code
1547 *
1548 * @return undefined (will never be reached)
1549 */
1550 public static Object exit(final Object self, final Object code) {
1551 System.exit(JSType.toInt32(code));
1552 return UNDEFINED;
1553 }
1554
1555 // builtin prototype accessors
1556
1557 /**
1558 * Get the builtin Object prototype.
1559 * @return the object prototype.
1560 */
1561 public ScriptObject getObjectPrototype() {
1562 return ScriptFunction.getPrototype(builtinObject);
1563 }
1564
1565 ScriptObject getFunctionPrototype() {
1566 return ScriptFunction.getPrototype(builtinFunction);
1567 }
1568
1569 ScriptObject getArrayPrototype() {
1570 return ScriptFunction.getPrototype(builtinArray);
1571 }
1572
1573 ScriptObject getBooleanPrototype() {
1574 return ScriptFunction.getPrototype(builtinBoolean);
1575 }
1576
1577 ScriptObject getNumberPrototype() {
1578 return ScriptFunction.getPrototype(builtinNumber);
1579 }
1580
1581 ScriptObject getDatePrototype() {
1582 return ScriptFunction.getPrototype(getBuiltinDate());
1583 }
1584
1585 ScriptObject getRegExpPrototype() {
1586 return ScriptFunction.getPrototype(getBuiltinRegExp());
1587 }
1588
1589 ScriptObject getStringPrototype() {
1590 return ScriptFunction.getPrototype(builtinString);
1591 }
1592
1593 ScriptObject getErrorPrototype() {
1594 return ScriptFunction.getPrototype(builtinError);
1595 }
1596
1597 ScriptObject getEvalErrorPrototype() {
1598 return ScriptFunction.getPrototype(getBuiltinEvalError());
1599 }
1600
1601 ScriptObject getRangeErrorPrototype() {
1602 return ScriptFunction.getPrototype(getBuiltinRangeError());
1603 }
1604
1605 ScriptObject getReferenceErrorPrototype() {
1606 return ScriptFunction.getPrototype(builtinReferenceError);
1607 }
1608
1609 ScriptObject getSyntaxErrorPrototype() {
1610 return ScriptFunction.getPrototype(builtinSyntaxError);
1611 }
1612
1613 ScriptObject getTypeErrorPrototype() {
1614 return ScriptFunction.getPrototype(builtinTypeError);
1615 }
1616
1617 ScriptObject getURIErrorPrototype() {
1618 return ScriptFunction.getPrototype(getBuiltinURIError());
1619 }
1620
1621 ScriptObject getJavaImporterPrototype() {
1622 return ScriptFunction.getPrototype(getBuiltinJavaImporter());
1623 }
1624
1625 ScriptObject getJSAdapterPrototype() {
1626 return ScriptFunction.getPrototype(getBuiltinJSAdapter());
1627 }
1628
1629 private synchronized ScriptFunction getBuiltinArrayBuffer() {
1630 if (this.builtinArrayBuffer == null) {
1631 this.builtinArrayBuffer = initConstructorAndSwitchPoint("ArrayBuffer", ScriptFunction.class);
1632 }
1633 return this.builtinArrayBuffer;
1634 }
1635
1636 ScriptObject getArrayBufferPrototype() {
1637 return ScriptFunction.getPrototype(getBuiltinArrayBuffer());
1638 }
1639
1640 private synchronized ScriptFunction getBuiltinDataView() {
1641 if (this.builtinDataView == null) {
1642 this.builtinDataView = initConstructorAndSwitchPoint("DataView", ScriptFunction.class);
1643 }
1644 return this.builtinDataView;
1645 }
1646
1647 ScriptObject getDataViewPrototype() {
1648 return ScriptFunction.getPrototype(getBuiltinDataView());
1649 }
1650
1651 private synchronized ScriptFunction getBuiltinInt8Array() {
1652 if (this.builtinInt8Array == null) {
1653 this.builtinInt8Array = initConstructorAndSwitchPoint("Int8Array", ScriptFunction.class);
1654 }
1655 return this.builtinInt8Array;
1656 }
1657
1658 ScriptObject getInt8ArrayPrototype() {
1659 return ScriptFunction.getPrototype(getBuiltinInt8Array());
1660 }
1661
1662 private synchronized ScriptFunction getBuiltinUint8Array() {
1663 if (this.builtinUint8Array == null) {
1664 this.builtinUint8Array = initConstructorAndSwitchPoint("Uint8Array", ScriptFunction.class);
1665 }
1666 return this.builtinUint8Array;
1667 }
1668
1669 ScriptObject getUint8ArrayPrototype() {
1670 return ScriptFunction.getPrototype(getBuiltinUint8Array());
1671 }
1672
1673 private synchronized ScriptFunction getBuiltinUint8ClampedArray() {
1674 if (this.builtinUint8ClampedArray == null) {
1675 this.builtinUint8ClampedArray = initConstructorAndSwitchPoint("Uint8ClampedArray", ScriptFunction.class);
1676 }
1677 return this.builtinUint8ClampedArray;
1678 }
1679
1680 ScriptObject getUint8ClampedArrayPrototype() {
1681 return ScriptFunction.getPrototype(getBuiltinUint8ClampedArray());
1682 }
1683
1684 private synchronized ScriptFunction getBuiltinInt16Array() {
1685 if (this.builtinInt16Array == null) {
1686 this.builtinInt16Array = initConstructorAndSwitchPoint("Int16Array", ScriptFunction.class);
1687 }
1688 return this.builtinInt16Array;
1689 }
1690
1691 ScriptObject getInt16ArrayPrototype() {
1692 return ScriptFunction.getPrototype(getBuiltinInt16Array());
1693 }
1694
1695 private synchronized ScriptFunction getBuiltinUint16Array() {
1696 if (this.builtinUint16Array == null) {
1697 this.builtinUint16Array = initConstructorAndSwitchPoint("Uint16Array", ScriptFunction.class);
1698 }
1699 return this.builtinUint16Array;
1700 }
1701
1702 ScriptObject getUint16ArrayPrototype() {
1703 return ScriptFunction.getPrototype(getBuiltinUint16Array());
1704 }
1705
1706 private synchronized ScriptFunction getBuiltinInt32Array() {
1707 if (this.builtinInt32Array == null) {
1708 this.builtinInt32Array = initConstructorAndSwitchPoint("Int32Array", ScriptFunction.class);
1709 }
1710 return this.builtinInt32Array;
1711 }
1712
1713 ScriptObject getInt32ArrayPrototype() {
1714 return ScriptFunction.getPrototype(getBuiltinInt32Array());
1715 }
1716
1717 private synchronized ScriptFunction getBuiltinUint32Array() {
1718 if (this.builtinUint32Array == null) {
1719 this.builtinUint32Array = initConstructorAndSwitchPoint("Uint32Array", ScriptFunction.class);
1720 }
1721 return this.builtinUint32Array;
1722 }
1723
1724 ScriptObject getUint32ArrayPrototype() {
1725 return ScriptFunction.getPrototype(getBuiltinUint32Array());
1726 }
1727
1728 private synchronized ScriptFunction getBuiltinFloat32Array() {
1729 if (this.builtinFloat32Array == null) {
1730 this.builtinFloat32Array = initConstructorAndSwitchPoint("Float32Array", ScriptFunction.class);
1731 }
1732 return this.builtinFloat32Array;
1733 }
1734
1735 ScriptObject getFloat32ArrayPrototype() {
1736 return ScriptFunction.getPrototype(getBuiltinFloat32Array());
1737 }
1738
1739 private synchronized ScriptFunction getBuiltinFloat64Array() {
1740 if (this.builtinFloat64Array == null) {
1741 this.builtinFloat64Array = initConstructorAndSwitchPoint("Float64Array", ScriptFunction.class);
1742 }
1743 return this.builtinFloat64Array;
1744 }
1745
1746 ScriptObject getFloat64ArrayPrototype() {
1747 return ScriptFunction.getPrototype(getBuiltinFloat64Array());
1748 }
1749
1750 private ScriptFunction getBuiltinArray() {
1751 return builtinArray;
1752 }
1753
1754 ScriptFunction getTypeErrorThrower() {
1755 return typeErrorThrower;
1756 }
1757
1758 /**
1759 * Called from compiled script code to test if builtin has been overridden
1760 *
1761 * @return true if builtin array has not been overridden
1762 */
1763 public static boolean isBuiltinArray() {
1764 final Global instance = Global.instance();
1765 return instance.array == instance.getBuiltinArray();
1766 }
1767
1768 private ScriptFunction getBuiltinBoolean() {
1769 return builtinBoolean;
1770 }
1771
1772 /**
1773 * Called from compiled script code to test if builtin has been overridden
1774 *
1775 * @return true if builtin boolean has not been overridden
1776 */
1777 public static boolean isBuiltinBoolean() {
1778 final Global instance = Global.instance();
1779 return instance._boolean == instance.getBuiltinBoolean();
1780 }
1781
1782 private synchronized ScriptFunction getBuiltinDate() {
1783 if (this.builtinDate == null) {
1784 this.builtinDate = initConstructorAndSwitchPoint("Date", ScriptFunction.class);
1785 final ScriptObject dateProto = ScriptFunction.getPrototype(builtinDate);
1786 // initialize default date
1787 this.DEFAULT_DATE = new NativeDate(NaN, dateProto);
1788 }
1789 return this.builtinDate;
1790 }
1791
1792 /**
1793 * Called from compiled script code to test if builtin has been overridden
1794 *
1795 * @return true if builtin date has not been overridden
1796 */
1797 public static boolean isBuiltinDate() {
1798 final Global instance = Global.instance();
1799 return instance.date == LAZY_SENTINEL || instance.date == instance.getBuiltinDate();
1800 }
1801
1802 private ScriptFunction getBuiltinError() {
1803 return builtinError;
1804 }
1805
1806 /**
1807 * Called from compiled script code to test if builtin has been overridden
1808 *
1809 * @return true if builtin error has not been overridden
1810 */
1811 public static boolean isBuiltinError() {
1812 final Global instance = Global.instance();
1813 return instance.error == instance.getBuiltinError();
1814 }
1815
1816 private synchronized ScriptFunction getBuiltinEvalError() {
1817 if (this.builtinEvalError == null) {
1818 this.builtinEvalError = initErrorSubtype("EvalError", getErrorPrototype());
1819 }
1820 return this.builtinEvalError;
1821 }
1822
1823 /**
1824 * Called from compiled script code to test if builtin has been overridden
1825 *
1826 * @return true if builtin eval error has not been overridden
1827 */
1828 public static boolean isBuiltinEvalError() {
1829 final Global instance = Global.instance();
1830 return instance.evalError == LAZY_SENTINEL || instance.evalError == instance.getBuiltinEvalError();
1831 }
1832
1833 private ScriptFunction getBuiltinFunction() {
1834 return builtinFunction;
1835 }
1836
1837 /**
1838 * Called from compiled script code to test if builtin has been overridden
1839 *
1840 * @return true if builtin function has not been overridden
1841 */
1842 public static boolean isBuiltinFunction() {
1843 final Global instance = Global.instance();
1844 return instance.function == instance.getBuiltinFunction();
1845 }
1846
1847 /**
1848 * Get the switchpoint used to check property changes for Function.prototype.apply
1849 * @return the switchpoint guarding apply (same as guarding call, and everything else in function)
1850 */
1851 public static SwitchPoint getBuiltinFunctionApplySwitchPoint() {
1852 return ScriptFunction.getPrototype(Global.instance().getBuiltinFunction()).getProperty("apply").getBuiltinSwitchPoint();
1853 }
1854
1855 private static boolean isBuiltinFunctionProperty(final String name) {
1856 final Global instance = Global.instance();
1857 final ScriptFunction builtinFunction = instance.getBuiltinFunction();
1858 if (builtinFunction == null) {
1859 return false; //conservative for compile-only mode
1860 }
1861 final boolean isBuiltinFunction = instance.function == builtinFunction;
1862 return isBuiltinFunction && ScriptFunction.getPrototype(builtinFunction).getProperty(name).isBuiltin();
1863 }
1864
1865 /**
1866 * Check if the Function.prototype.apply has not been replaced
1867 * @return true if Function.prototype.apply has been replaced
1868 */
1869 public static boolean isBuiltinFunctionPrototypeApply() {
1870 return isBuiltinFunctionProperty("apply");
1871 }
1872
1873 /**
1874 * Check if the Function.prototype.apply has not been replaced
1875 * @return true if Function.prototype.call has been replaced
1876 */
1877 public static boolean isBuiltinFunctionPrototypeCall() {
1878 return isBuiltinFunctionProperty("call");
1879 }
1880
1881 private synchronized ScriptFunction getBuiltinJSAdapter() {
1882 if (this.builtinJSAdapter == null) {
1883 this.builtinJSAdapter = initConstructorAndSwitchPoint("JSAdapter", ScriptFunction.class);
1884 }
1885 return builtinJSAdapter;
1886 }
1887
1888 /**
1889 * Called from compiled script code to test if builtin has been overridden
1890 *
1891 * @return true if builtin JSAdapter has not been overridden
1892 */
1893 public static boolean isBuiltinJSAdapter() {
1894 final Global instance = Global.instance();
1895 return instance.jsadapter == LAZY_SENTINEL || instance.jsadapter == instance.getBuiltinJSAdapter();
1896 }
1897
1898 private synchronized ScriptObject getBuiltinJSON() {
1899 if (this.builtinJSON == null) {
1900 this.builtinJSON = initConstructorAndSwitchPoint("JSON", ScriptObject.class);
1901 }
1902 return this.builtinJSON;
1903 }
1904
1905 /**
1906 * Called from compiled script code to test if builtin has been overridden
1907 *
1908 * @return true if builtin JSON has has not been overridden
1909 */
1910 public static boolean isBuiltinJSON() {
1911 final Global instance = Global.instance();
1912 return instance.json == LAZY_SENTINEL || instance.json == instance.getBuiltinJSON();
1913 }
1914
1915 private ScriptObject getBuiltinJava() {
1916 return builtinJava;
1917 }
1918
1919 /**
1920 * Called from compiled script code to test if builtin has been overridden
1921 *
1922 * @return true if builtin Java has not been overridden
1923 */
1924 public static boolean isBuiltinJava() {
1925 final Global instance = Global.instance();
1926 return instance.java == instance.getBuiltinJava();
1927 }
1928
1929 private ScriptObject getBuiltinJavax() {
1930 return builtinJavax;
1931 }
1932
1933 /**
1934 * Called from compiled script code to test if builtin has been overridden
1935 *
1936 * @return true if builtin Javax has not been overridden
1937 */
1938 public static boolean isBuiltinJavax() {
1939 final Global instance = Global.instance();
1940 return instance.javax == instance.getBuiltinJavax();
1941 }
1942
1943 private synchronized ScriptFunction getBuiltinJavaImporter() {
1944 if (this.builtinJavaImporter == null) {
1945 this.builtinJavaImporter = initConstructor("JavaImporter", ScriptFunction.class);
1946 }
1947 return this.builtinJavaImporter;
1948 }
1949
1950 private synchronized ScriptObject getBuiltinJavaApi() {
1951 if (this.builtinJavaApi == null) {
1952 this.builtinJavaApi = initConstructor("Java", ScriptObject.class);
1953 }
1954 return this.builtinJavaApi;
1955 }
1956
1957 /**
1958 * Called from compiled script code to test if builtin has been overridden
1959 *
1960 * @return true if builtin Java importer has not been overridden
1961 */
1962 public static boolean isBuiltinJavaImporter() {
1963 final Global instance = Global.instance();
1964 return instance.javaImporter == LAZY_SENTINEL || instance.javaImporter == instance.getBuiltinJavaImporter();
1965 }
1966
1967 /**
1968 * Called from compiled script code to test if builtin has been overridden
1969 *
1970 * @return true if builtin math has not been overridden
1971 */
1972 public static boolean isBuiltinMath() {
1973 final Global instance = Global.instance();
1974 return instance.math == instance.builtinMath;
1975 }
1976
1977 private ScriptFunction getBuiltinNumber() {
1978 return builtinNumber;
1979 }
1980
1981 /**
1982 * Called from compiled script code to test if builtin has been overridden
1983 *
1984 * @return true if builtin number has not been overridden
1985 */
1986 public static boolean isBuiltinNumber() {
1987 final Global instance = Global.instance();
1988 return instance.number == instance.getBuiltinNumber();
1989 }
1990
1991 private ScriptFunction getBuiltinObject() {
1992 return builtinObject;
1993 }
1994
1995 /**
1996 * Called from compiled script code to test if builtin has been overridden
1997 *
1998 * @return true if builtin object has not been overridden
1999 */
2000 public static boolean isBuiltinObject() {
2001 final Global instance = Global.instance();
2002 return instance.object == instance.getBuiltinObject();
2003 }
2004
2005 private ScriptObject getBuiltinPackages() {
2006 return builtinPackages;
2007 }
2008
2009 /**
2010 * Called from compiled script code to test if builtin has been overridden
2011 *
2012 * @return true if builtin package has not been overridden
2013 */
2014 public static boolean isBuiltinPackages() {
2015 final Global instance = Global.instance();
2016 return instance.packages == instance.getBuiltinPackages();
2017 }
2018
2019 private synchronized ScriptFunction getBuiltinRangeError() {
2020 if (this.builtinRangeError == null) {
2021 this.builtinRangeError = initErrorSubtype("RangeError", getErrorPrototype());
2022 }
2023 return builtinRangeError;
2024 }
2025
2026 /**
2027 * Called from compiled script code to test if builtin has been overridden
2028 *
2029 * @return true if builtin range error has not been overridden
2030 */
2031 public static boolean isBuiltinRangeError() {
2032 final Global instance = Global.instance();
2033 return instance.rangeError == LAZY_SENTINEL || instance.rangeError == instance.getBuiltinRangeError();
2034 }
2035
2036 private synchronized ScriptFunction getBuiltinReferenceError() {
2037 return builtinReferenceError;
2038 }
2039
2040 /**
2041 * Called from compiled script code to test if builtin has been overridden
2042 *
2043 * @return true if builtin reference error has not been overridden
2044 */
2045 public static boolean isBuiltinReferenceError() {
2046 final Global instance = Global.instance();
2047 return instance.referenceError == instance.getBuiltinReferenceError();
2048 }
2049
2050 private synchronized ScriptFunction getBuiltinRegExp() {
2051 if (this.builtinRegExp == null) {
2052 this.builtinRegExp = initConstructorAndSwitchPoint("RegExp", ScriptFunction.class);
2053 final ScriptObject regExpProto = ScriptFunction.getPrototype(builtinRegExp);
2054 // initialize default regexp object
2055 this.DEFAULT_REGEXP = new NativeRegExp("(?:)", "", this, regExpProto);
2056 // RegExp.prototype should behave like a RegExp object. So copy the
2057 // properties.
2058 regExpProto.addBoundProperties(DEFAULT_REGEXP);
2059 }
2060 return builtinRegExp;
2061 }
2062
2063 /**
2064 * Called from compiled script code to test if builtin has been overridden
2065 *
2066 * @return true if builtin regexp has not been overridden
2067 */
2068 public static boolean isBuiltinRegExp() {
2069 final Global instance = Global.instance();
2070 return instance.regexp == LAZY_SENTINEL || instance.regexp == instance.getBuiltinRegExp();
2071 }
2072
2073 private ScriptFunction getBuiltinString() {
2074 return builtinString;
2075 }
2076
2077 /**
2078 * Called from compiled script code to test if builtin has been overridden
2079 *
2080 * @return true if builtin Java has not been overridden
2081 */
2082 public static boolean isBuiltinString() {
2083 final Global instance = Global.instance();
2084 return instance.string == instance.getBuiltinString();
2085 }
2086
2087 private ScriptFunction getBuiltinSyntaxError() {
2088 return builtinSyntaxError;
2089 }
2090
2091 /**
2092 * Called from compiled script code to test if builtin has been overridden
2093 *
2094 * @return true if builtin syntax error has not been overridden
2095 */
2096 public static boolean isBuiltinSyntaxError() {
2097 final Global instance = Global.instance();
2098 return instance.syntaxError == instance.getBuiltinSyntaxError();
2099 }
2100
2101 private ScriptFunction getBuiltinTypeError() {
2102 return builtinTypeError;
2103 }
2104
2105 /**
2106 * Called from compiled script code to test if builtin has been overridden
2107 *
2108 * @return true if builtin type error has not been overridden
2109 */
2110 public static boolean isBuiltinTypeError() {
2111 final Global instance = Global.instance();
2112 return instance.typeError == instance.getBuiltinTypeError();
2113 }
2114
2115 private synchronized ScriptFunction getBuiltinURIError() {
2116 if (this.builtinURIError == null) {
2117 this.builtinURIError = initErrorSubtype("URIError", getErrorPrototype());
2118 }
2119 return this.builtinURIError;
2120 }
2121
2122 /**
2123 * Called from compiled script code to test if builtin has been overridden
2124 *
2125 * @return true if builtin URI error has not been overridden
2126 */
2127 public static boolean isBuiltinURIError() {
2128 final Global instance = Global.instance();
2129 return instance.uriError == LAZY_SENTINEL || instance.uriError == instance.getBuiltinURIError();
2130 }
2131
2132 @Override
2133 public String getClassName() {
2134 return "global";
2135 }
2136
2137 /**
2138 * Copy function used to clone NativeRegExp objects.
2139 *
2140 * @param regexp a NativeRegExp to clone
2141 *
2142 * @return copy of the given regexp object
2143 */
2144 public static Object regExpCopy(final Object regexp) {
2145 return new NativeRegExp((NativeRegExp)regexp);
2146 }
2147
2148 /**
2149 * Convert given object to NativeRegExp type.
2150 *
2151 * @param obj object to be converted
2152 * @return NativeRegExp instance
2153 */
2154 public static NativeRegExp toRegExp(final Object obj) {
2155 if (obj instanceof NativeRegExp) {
2156 return (NativeRegExp)obj;
2157 }
2158 return new NativeRegExp(JSType.toString(obj));
2159 }
2160
2161 /**
2162 * ECMA 9.9 ToObject implementation
2163 *
2164 * @param obj an item for which to run ToObject
2165 * @return ToObject version of given item
2166 */
2167 public static Object toObject(final Object obj) {
2168 if (obj == null || obj == UNDEFINED) {
2169 throw typeError("not.an.object", ScriptRuntime.safeToString(obj));
2170 }
2171
2172 if (obj instanceof ScriptObject) {
2173 return obj;
2174 }
2175
2176 return instance().wrapAsObject(obj);
2177 }
2178
2179 /**
2180 * Allocate a new object array.
2181 *
2182 * @param initial object values.
2183 * @return the new array
2184 */
2185 public static NativeArray allocate(final Object[] initial) {
2186 ArrayData arrayData = ArrayData.allocate(initial);
2187
2188 for (int index = 0; index < initial.length; index++) {
2189 final Object value = initial[index];
2190
2191 if (value == ScriptRuntime.EMPTY) {
2192 arrayData = arrayData.delete(index);
2193 }
2194 }
2195
2196 return new NativeArray(arrayData);
2197 }
2198
2199 /**
2200 * Allocate a new number array.
2201 *
2202 * @param initial number values.
2203 * @return the new array
2204 */
2205 public static NativeArray allocate(final double[] initial) {
2206 return new NativeArray(ArrayData.allocate(initial));
2207 }
2208
2209 /**
2210 * Allocate a new long array.
2211 *
2212 * @param initial number values.
2213 * @return the new array
2214 */
2215 public static NativeArray allocate(final long[] initial) {
2216 return new NativeArray(ArrayData.allocate(initial));
2217 }
2218
2219 /**
2220 * Allocate a new integer array.
2221 *
2222 * @param initial number values.
2223 * @return the new array
2224 */
2225 public static NativeArray allocate(final int[] initial) {
2226 return new NativeArray(ArrayData.allocate(initial));
2227 }
2228
2229 /**
2230 * Allocate a new object array for arguments.
2231 *
2232 * @param arguments initial arguments passed.
2233 * @param callee reference to the function that uses arguments object
2234 * @param numParams actual number of declared parameters
2235 *
2236 * @return the new array
2237 */
2238 public static ScriptObject allocateArguments(final Object[] arguments, final Object callee, final int numParams) {
2239 return NativeArguments.allocate(arguments, (ScriptFunction)callee, numParams);
2240 }
2241
2242 /**
2243 * Called from generated to check if given function is the builtin 'eval'. If
2244 * eval is used in a script, a lot of optimizations and assumptions cannot be done.
2245 *
2246 * @param fn function object that is checked
2247 * @return true if fn is the builtin eval
2248 */
2249 public static boolean isEval(final Object fn) {
2250 return fn == Global.instance().builtinEval;
2251 }
2252
2253 /**
2254 * Called from generated to replace a location property placeholder with the actual location property value.
2255 *
2256 * @param placeholder the value tested for being a placeholder for a location property
2257 * @param locationProperty the actual value for the location property
2258 * @return locationProperty if placeholder is indeed a placeholder for a location property, the placeholder otherwise
2259 */
2260 public static Object replaceLocationPropertyPlaceholder(final Object placeholder, final Object locationProperty) {
2261 return isLocationPropertyPlaceholder(placeholder) ? locationProperty : placeholder;
2262 }
2263
2264 /**
2265 * Called from runtime internals to check if the passed value is a location property placeholder.
2266 * @param placeholder the value tested for being a placeholder for a location property
2267 * @return true if the value is a placeholder, false otherwise.
2268 */
2269 public static boolean isLocationPropertyPlaceholder(final Object placeholder) {
2270 return placeholder == LOCATION_PROPERTY_PLACEHOLDER;
2271 }
2272
2273 /**
2274 * Create a new RegExp object.
2275 *
2276 * @param expression Regular expression.
2277 * @param options Search options.
2278 *
2279 * @return New RegExp object.
2280 */
2281 public static Object newRegExp(final String expression, final String options) {
2282 if (options == null) {
2283 return new NativeRegExp(expression);
2284 }
2285 return new NativeRegExp(expression, options);
2286 }
2287
2288 /**
2289 * Get the object prototype
2290 *
2291 * @return the object prototype
2292 */
2293 public static ScriptObject objectPrototype() {
2294 return Global.instance().getObjectPrototype();
2295 }
2296
2297 /**
2298 * Create a new empty object instance.
2299 *
2300 * @return New empty object.
2301 */
2302 public static ScriptObject newEmptyInstance() {
2303 return Global.instance().newObject();
2304 }
2305
2306 /**
2307 * Check if a given object is a ScriptObject, raises an exception if this is
2308 * not the case
2309 *
2310 * @param obj and object to check
2311 * @return the script object
2312 */
2313 public static ScriptObject checkObject(final Object obj) {
2314 if (!(obj instanceof ScriptObject)) {
2315 throw typeError("not.an.object", ScriptRuntime.safeToString(obj));
2316 }
2317 return (ScriptObject)obj;
2318 }
2319
2320 /**
2321 * ECMA 9.10 - implementation of CheckObjectCoercible, i.e. raise an exception
2322 * if this object is null or undefined.
2323 *
2324 * @param obj an object to check
2325 */
2326 public static void checkObjectCoercible(final Object obj) {
2327 if (obj == null || obj == UNDEFINED) {
2328 throw typeError("not.an.object", ScriptRuntime.safeToString(obj));
2329 }
2330 }
2331
2332 /**
2333 * Get the current split state.
2334 *
2335 * @return current split state
2336 */
2337 @Override
2338 public int getSplitState() {
2339 return splitState;
2340 }
2341
2342 /**
2343 * Set the current split state.
2344 *
2345 * @param state current split state
2346 */
2347 @Override
2348 public void setSplitState(final int state) {
2349 splitState = state;
2350 }
2351
2352 /**
2353 * Return the ES6 global scope for lexically declared bindings.
2354 * @return the ES6 lexical global scope.
2355 */
2356 public final ScriptObject getLexicalScope() {
2357 assert context.getEnv()._es6;
2358 return lexicalScope;
2359 }
2360
2361 @Override
2362 public void addBoundProperties(final ScriptObject source, final jdk.nashorn.internal.runtime.Property[] properties) {
2363 PropertyMap ownMap = getMap();
2364 LexicalScope lexScope = null;
2365 PropertyMap lexicalMap = null;
2366 boolean hasLexicalDefinitions = false;
2367
2368 if (context.getEnv()._es6) {
2369 lexScope = (LexicalScope) getLexicalScope();
2370 lexicalMap = lexScope.getMap();
2371
2372 for (final jdk.nashorn.internal.runtime.Property property : properties) {
2373 if (property.isLexicalBinding()) {
2374 hasLexicalDefinitions = true;
2375 }
2376 // ES6 15.1.8 steps 6. and 7.
2377 final jdk.nashorn.internal.runtime.Property globalProperty = ownMap.findProperty(property.getKey());
2378 if (globalProperty != null && !globalProperty.isConfigurable() && property.isLexicalBinding()) {
2379 throw ECMAErrors.syntaxError("redeclare.variable", property.getKey());
2380 }
2381 final jdk.nashorn.internal.runtime.Property lexicalProperty = lexicalMap.findProperty(property.getKey());
2382 if (lexicalProperty != null && !property.isConfigurable()) {
2383 throw ECMAErrors.syntaxError("redeclare.variable", property.getKey());
2384 }
2385 }
2386 }
2387
2388 for (final jdk.nashorn.internal.runtime.Property property : properties) {
2389 if (property.isLexicalBinding()) {
2390 assert lexScope != null;
2391 lexicalMap = lexScope.addBoundProperty(lexicalMap, source, property);
2392
2393 if (ownMap.findProperty(property.getKey()) != null) {
2394 // If property exists in the global object invalidate any global constant call sites.
2395 invalidateGlobalConstant(property.getKey());
2396 }
2397 } else {
2398 ownMap = addBoundProperty(ownMap, source, property);
2399 }
2400 }
2401
2402 setMap(ownMap);
2403
2404 if (hasLexicalDefinitions) {
2405 assert lexScope != null;
2406 lexScope.setMap(lexicalMap);
2407 invalidateLexicalSwitchPoint();
2408 }
2409 }
2410
2411 @Override
2412 public GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) {
2413 final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
2414 final boolean isScope = NashornCallSiteDescriptor.isScope(desc);
2415
2416 if (lexicalScope != null && isScope && !NashornCallSiteDescriptor.isApplyToCall(desc)) {
2417 if (lexicalScope.hasOwnProperty(name)) {
2418 return lexicalScope.findGetMethod(desc, request, operator);
2419 }
2420 }
2421
2422 final GuardedInvocation invocation = super.findGetMethod(desc, request, operator);
2423
2424 // We want to avoid adding our generic lexical scope switchpoint to global constant invocations,
2425 // because those are invalidated per-key in the addBoundProperties method above.
2426 // We therefor check if the invocation does already have a switchpoint and the property is non-inherited,
2427 // assuming this only applies to global constants. If other non-inherited properties will
2428 // start using switchpoints some time in the future we'll have to revisit this.
2429 if (isScope && context.getEnv()._es6 && (invocation.getSwitchPoints() == null || !hasOwnProperty(name))) {
2430 return invocation.addSwitchPoint(getLexicalScopeSwitchPoint());
2431 }
2432
2433 return invocation;
2434 }
2435
2436 @Override
2437 protected FindProperty findProperty(final String key, final boolean deep, final ScriptObject start) {
2438 if (lexicalScope != null && start != this && start.isScope()) {
2439 final FindProperty find = lexicalScope.findProperty(key, false);
2440 if (find != null) {
2441 return find;
2442 }
2443 }
2444 return super.findProperty(key, deep, start);
2445 }
2446
2447 @Override
2448 public GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) {
2449 final boolean isScope = NashornCallSiteDescriptor.isScope(desc);
2450
2451 if (lexicalScope != null && isScope) {
2452 final String name = desc.getNameToken(CallSiteDescriptor.NAME_OPERAND);
2453 if (lexicalScope.hasOwnProperty(name)) {
2454 return lexicalScope.findSetMethod(desc, request);
2455 }
2456 }
2457
2458 final GuardedInvocation invocation = super.findSetMethod(desc, request);
2459
2460 if (isScope && context.getEnv()._es6) {
2461 return invocation.addSwitchPoint(getLexicalScopeSwitchPoint());
2462 }
2463
2464 return invocation;
2465 }
2466
2467 /**
2468 * Adds jjs shell interactive mode builtin functions to global scope.
2469 */
2470 public void addShellBuiltins() {
2471 Object value = ScriptFunctionImpl.makeFunction("input", ShellFunctions.INPUT);
2472 addOwnProperty("input", Attribute.NOT_ENUMERABLE, value);
2473
2474 value = ScriptFunctionImpl.makeFunction("evalinput", ShellFunctions.EVALINPUT);
2475 addOwnProperty("evalinput", Attribute.NOT_ENUMERABLE, value);
2476 }
2477
2478 private synchronized SwitchPoint getLexicalScopeSwitchPoint() {
2479 SwitchPoint switchPoint = lexicalScopeSwitchPoint;
2480 if (switchPoint == null || switchPoint.hasBeenInvalidated()) {
2481 switchPoint = lexicalScopeSwitchPoint = new SwitchPoint();
2482 }
2483 return switchPoint;
2484 }
2485
2486 private synchronized void invalidateLexicalSwitchPoint() {
2487 if (lexicalScopeSwitchPoint != null) {
2488 context.getLogger(GlobalConstants.class).info("Invalidating non-constant globals on lexical scope update");
2489 SwitchPoint.invalidateAll(new SwitchPoint[]{ lexicalScopeSwitchPoint });
2490 }
2491 }
2492
2493
2494 @SuppressWarnings("unused")
2495 private static Object lexicalScopeFilter(final Object self) {
2496 if (self instanceof Global) {
2497 return ((Global) self).getLexicalScope();
2498 }
2499 return self;
2500 }
2501
2502 private <T extends ScriptObject> T initConstructorAndSwitchPoint(final String name, final Class<T> clazz) {
2503 final T func = initConstructor(name, clazz);
2504 tagBuiltinProperties(name, func);
2505 return func;
2506 }
2507
2508 private void init(final ScriptEngine eng) {
2509 assert Context.getGlobal() == this : "this global is not set as current";
2510
2511 final ScriptEnvironment env = getContext().getEnv();
2512
2513 // initialize Function and Object constructor
2514 initFunctionAndObject();
2515
2516 // Now fix Global's own proto.
2517 this.setInitialProto(getObjectPrototype());
2518
2519 // initialize global function properties
2520 this.eval = this.builtinEval = ScriptFunctionImpl.makeFunction("eval", EVAL);
2521
2522 this.parseInt = ScriptFunctionImpl.makeFunction("parseInt", GlobalFunctions.PARSEINT,
2523 new Specialization[] {
2524 new Specialization(GlobalFunctions.PARSEINT_Z),
2525 new Specialization(GlobalFunctions.PARSEINT_I),
2526 new Specialization(GlobalFunctions.PARSEINT_J),
2527 new Specialization(GlobalFunctions.PARSEINT_OI),
2528 new Specialization(GlobalFunctions.PARSEINT_O) });
2529 this.parseFloat = ScriptFunctionImpl.makeFunction("parseFloat", GlobalFunctions.PARSEFLOAT);
2530 this.isNaN = ScriptFunctionImpl.makeFunction("isNaN", GlobalFunctions.IS_NAN,
2531 new Specialization[] {
2532 new Specialization(GlobalFunctions.IS_NAN_I),
2533 new Specialization(GlobalFunctions.IS_NAN_J),
2534 new Specialization(GlobalFunctions.IS_NAN_D) });
2535 this.parseFloat = ScriptFunctionImpl.makeFunction("parseFloat", GlobalFunctions.PARSEFLOAT);
2536 this.isNaN = ScriptFunctionImpl.makeFunction("isNaN", GlobalFunctions.IS_NAN);
2537 this.isFinite = ScriptFunctionImpl.makeFunction("isFinite", GlobalFunctions.IS_FINITE);
2538 this.encodeURI = ScriptFunctionImpl.makeFunction("encodeURI", GlobalFunctions.ENCODE_URI);
2539 this.encodeURIComponent = ScriptFunctionImpl.makeFunction("encodeURIComponent", GlobalFunctions.ENCODE_URICOMPONENT);
2540 this.decodeURI = ScriptFunctionImpl.makeFunction("decodeURI", GlobalFunctions.DECODE_URI);
2541 this.decodeURIComponent = ScriptFunctionImpl.makeFunction("decodeURIComponent", GlobalFunctions.DECODE_URICOMPONENT);
2542 this.escape = ScriptFunctionImpl.makeFunction("escape", GlobalFunctions.ESCAPE);
2543 this.unescape = ScriptFunctionImpl.makeFunction("unescape", GlobalFunctions.UNESCAPE);
2544 this.print = ScriptFunctionImpl.makeFunction("print", env._print_no_newline ? PRINT : PRINTLN);
2545 this.load = ScriptFunctionImpl.makeFunction("load", LOAD);
2546 this.loadWithNewGlobal = ScriptFunctionImpl.makeFunction("loadWithNewGlobal", LOAD_WITH_NEW_GLOBAL);
2547 this.exit = ScriptFunctionImpl.makeFunction("exit", EXIT);
2548 this.quit = ScriptFunctionImpl.makeFunction("quit", EXIT);
2549
2550 // built-in constructors
2551 this.builtinArray = initConstructorAndSwitchPoint("Array", ScriptFunction.class);
2552 this.builtinBoolean = initConstructorAndSwitchPoint("Boolean", ScriptFunction.class);
2553 this.builtinNumber = initConstructorAndSwitchPoint("Number", ScriptFunction.class);
2554 this.builtinString = initConstructorAndSwitchPoint("String", ScriptFunction.class);
2555 this.builtinMath = initConstructorAndSwitchPoint("Math", ScriptObject.class);
2556
2557 // initialize String.prototype.length to 0
2558 // add String.prototype.length
2559 final ScriptObject stringPrototype = getStringPrototype();
2560 stringPrototype.addOwnProperty("length", Attribute.NON_ENUMERABLE_CONSTANT, 0.0);
2561
2562 // set isArray flag on Array.prototype
2563 final ScriptObject arrayPrototype = getArrayPrototype();
2564 arrayPrototype.setIsArray();
2565
2566 // Error stuff
2567 initErrorObjects();
2568
2569 // java access
2570 if (! env._no_java) {
2571 this.javaApi = LAZY_SENTINEL;
2572 this.javaImporter = LAZY_SENTINEL;
2573 initJavaAccess();
2574 }
2575
2576 if (! env._no_typed_arrays) {
2577 this.arrayBuffer = LAZY_SENTINEL;
2578 this.dataView = LAZY_SENTINEL;
2579 this.int8Array = LAZY_SENTINEL;
2580 this.uint8Array = LAZY_SENTINEL;
2581 this.uint8ClampedArray = LAZY_SENTINEL;
2582 this.int16Array = LAZY_SENTINEL;
2583 this.uint16Array = LAZY_SENTINEL;
2584 this.int32Array = LAZY_SENTINEL;
2585 this.uint32Array = LAZY_SENTINEL;
2586 this.float32Array = LAZY_SENTINEL;
2587 this.float64Array = LAZY_SENTINEL;
2588 }
2589
2590 if (env._scripting) {
2591 initScripting(env);
2592 }
2593
2594 if (Context.DEBUG) {
2595 boolean debugOkay;
2596 final SecurityManager sm = System.getSecurityManager();
2597 if (sm != null) {
2598 try {
2599 sm.checkPermission(new RuntimePermission(Context.NASHORN_DEBUG_MODE));
2600 debugOkay = true;
2601 } catch (final SecurityException ignored) {
2602 // if no permission, don't initialize Debug object
2603 debugOkay = false;
2604 }
2605
2606 } else {
2607 debugOkay = true;
2608 }
2609
2610 if (debugOkay) {
2611 initDebug();
2612 }
2613 }
2614
2615 copyBuiltins();
2616
2617 // expose script (command line) arguments as "arguments" property of global
2618 arguments = wrapAsObject(env.getArguments().toArray());
2619 if (env._scripting) {
2620 // synonym for "arguments" in scripting mode
2621 addOwnProperty("$ARG", Attribute.NOT_ENUMERABLE, arguments);
2622 }
2623
2624 if (eng != null) {
2625 // default file name
2626 addOwnProperty(ScriptEngine.FILENAME, Attribute.NOT_ENUMERABLE, null);
2627 // __noSuchProperty__ hook for ScriptContext search of missing variables
2628 final ScriptFunction noSuchProp = ScriptFunctionImpl.makeStrictFunction(NO_SUCH_PROPERTY_NAME, NO_SUCH_PROPERTY);
2629 addOwnProperty(NO_SUCH_PROPERTY_NAME, Attribute.NOT_ENUMERABLE, noSuchProp);
2630 }
2631 }
2632
2633 private void initErrorObjects() {
2634 // Error objects
2635 this.builtinError = initConstructor("Error", ScriptFunction.class);
2636 final ScriptObject errorProto = getErrorPrototype();
2637
2638 // Nashorn specific accessors on Error.prototype - stack, lineNumber, columnNumber and fileName
2639 final ScriptFunction getStack = ScriptFunctionImpl.makeFunction("getStack", NativeError.GET_STACK);
2640 final ScriptFunction setStack = ScriptFunctionImpl.makeFunction("setStack", NativeError.SET_STACK);
2641 errorProto.addOwnProperty("stack", Attribute.NOT_ENUMERABLE, getStack, setStack);
2642 final ScriptFunction getLineNumber = ScriptFunctionImpl.makeFunction("getLineNumber", NativeError.GET_LINENUMBER);
2643 final ScriptFunction setLineNumber = ScriptFunctionImpl.makeFunction("setLineNumber", NativeError.SET_LINENUMBER);
2644 errorProto.addOwnProperty("lineNumber", Attribute.NOT_ENUMERABLE, getLineNumber, setLineNumber);
2645 final ScriptFunction getColumnNumber = ScriptFunctionImpl.makeFunction("getColumnNumber", NativeError.GET_COLUMNNUMBER);
2646 final ScriptFunction setColumnNumber = ScriptFunctionImpl.makeFunction("setColumnNumber", NativeError.SET_COLUMNNUMBER);
2647 errorProto.addOwnProperty("columnNumber", Attribute.NOT_ENUMERABLE, getColumnNumber, setColumnNumber);
2648 final ScriptFunction getFileName = ScriptFunctionImpl.makeFunction("getFileName", NativeError.GET_FILENAME);
2649 final ScriptFunction setFileName = ScriptFunctionImpl.makeFunction("setFileName", NativeError.SET_FILENAME);
2650 errorProto.addOwnProperty("fileName", Attribute.NOT_ENUMERABLE, getFileName, setFileName);
2651
2652 // ECMA 15.11.4.2 Error.prototype.name
2653 // Error.prototype.name = "Error";
2654 errorProto.set(NativeError.NAME, "Error", 0);
2655 // ECMA 15.11.4.3 Error.prototype.message
2656 // Error.prototype.message = "";
2657 errorProto.set(NativeError.MESSAGE, "", 0);
2658
2659 tagBuiltinProperties("Error", builtinError);
2660
2661 this.builtinReferenceError = initErrorSubtype("ReferenceError", errorProto);
2662 this.builtinSyntaxError = initErrorSubtype("SyntaxError", errorProto);
2663 this.builtinTypeError = initErrorSubtype("TypeError", errorProto);
2664 }
2665
2666 private ScriptFunction initErrorSubtype(final String name, final ScriptObject errorProto) {
2667 final ScriptFunction cons = initConstructor(name, ScriptFunction.class);
2668 final ScriptObject prototype = ScriptFunction.getPrototype(cons);
2669 prototype.set(NativeError.NAME, name, 0);
2670 prototype.set(NativeError.MESSAGE, "", 0);
2671 prototype.setInitialProto(errorProto);
2672 tagBuiltinProperties(name, cons);
2673 return cons;
2674 }
2675
2676 private void initJavaAccess() {
2677 final ScriptObject objectProto = getObjectPrototype();
2678 this.builtinPackages = new NativeJavaPackage("", objectProto);
2679 this.builtinCom = new NativeJavaPackage("com", objectProto);
2680 this.builtinEdu = new NativeJavaPackage("edu", objectProto);
2681 this.builtinJava = new NativeJavaPackage("java", objectProto);
2682 this.builtinJavafx = new NativeJavaPackage("javafx", objectProto);
2683 this.builtinJavax = new NativeJavaPackage("javax", objectProto);
2684 this.builtinOrg = new NativeJavaPackage("org", objectProto);
2685 }
2686
2687 private void initScripting(final ScriptEnvironment scriptEnv) {
2688 Object value;
2689 value = ScriptFunctionImpl.makeFunction("readLine", ScriptingFunctions.READLINE);
2690 addOwnProperty("readLine", Attribute.NOT_ENUMERABLE, value);
2691
2692 value = ScriptFunctionImpl.makeFunction("readFully", ScriptingFunctions.READFULLY);
2693 addOwnProperty("readFully", Attribute.NOT_ENUMERABLE, value);
2694
2695 final String execName = ScriptingFunctions.EXEC_NAME;
2696 value = ScriptFunctionImpl.makeFunction(execName, ScriptingFunctions.EXEC);
2697 addOwnProperty(execName, Attribute.NOT_ENUMERABLE, value);
2698
2699 // Nashorn extension: global.echo (scripting-mode-only)
2700 // alias for "print"
2701 value = get("print");
2702 addOwnProperty("echo", Attribute.NOT_ENUMERABLE, value);
2703
2704 // Nashorn extension: global.$OPTIONS (scripting-mode-only)
2705 final ScriptObject options = newObject();
2706 copyOptions(options, scriptEnv);
2707 addOwnProperty("$OPTIONS", Attribute.NOT_ENUMERABLE, options);
2708
2709 // Nashorn extension: global.$ENV (scripting-mode-only)
2710 if (System.getSecurityManager() == null) {
2711 // do not fill $ENV if we have a security manager around
2712 // Retrieve current state of ENV variables.
2713 final ScriptObject env = newObject();
2714 env.putAll(System.getenv(), scriptEnv._strict);
2715
2716 // The PWD environment variable needs to be set explicitly on
2717 // Windows, as it does not exist at the OS level and is not
2718 // imported via System.getenv().
2719 if (System.getProperty("os.name").startsWith("Windows")) {
2720 env.put(ScriptingFunctions.PWD_NAME, System.getProperty("user.dir"), scriptEnv._strict);
2721 }
2722
2723 addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, env);
2724 } else {
2725 addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);
2726 }
2727
2728 // add other special properties for exec support
2729 addOwnProperty(ScriptingFunctions.OUT_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);
2730 addOwnProperty(ScriptingFunctions.ERR_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);
2731 addOwnProperty(ScriptingFunctions.EXIT_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);
2732 }
2733
2734 private static void copyOptions(final ScriptObject options, final ScriptEnvironment scriptEnv) {
2735 for (final Field f : scriptEnv.getClass().getFields()) {
2736 try {
2737 options.set(f.getName(), f.get(scriptEnv), 0);
2738 } catch (final IllegalArgumentException | IllegalAccessException exp) {
2739 throw new RuntimeException(exp);
2740 }
2741 }
2742 }
2743
2744 private void copyBuiltins() {
2745 this.array = this.builtinArray;
2746 this._boolean = this.builtinBoolean;
2747 this.error = this.builtinError;
2748 this.function = this.builtinFunction;
2749 this.com = this.builtinCom;
2750 this.edu = this.builtinEdu;
2751 this.java = this.builtinJava;
2752 this.javafx = this.builtinJavafx;
2753 this.javax = this.builtinJavax;
2754 this.org = this.builtinOrg;
2755 this.math = this.builtinMath;
2756 this.number = this.builtinNumber;
2757 this.object = this.builtinObject;
2758 this.packages = this.builtinPackages;
2759 this.referenceError = this.builtinReferenceError;
2760 this.string = this.builtinString;
2761 this.syntaxError = this.builtinSyntaxError;
2762 this.typeError = this.builtinTypeError;
2763 }
2764
2765 private void initDebug() {
2766 this.addOwnProperty("Debug", Attribute.NOT_ENUMERABLE, initConstructor("Debug", ScriptObject.class));
2767 }
2768
2769 private Object printImpl(final boolean newLine, final Object... objects) {
2770 final ScriptContext sc = currentContext();
2771 @SuppressWarnings("resource")
2772 final PrintWriter out = sc != null? new PrintWriter(sc.getWriter()) : getContext().getEnv().getOut();
2773 final StringBuilder sb = new StringBuilder();
2774
2775 for (final Object obj : objects) {
2776 if (sb.length() != 0) {
2777 sb.append(' ');
2778 }
2779
2780 sb.append(JSType.toString(obj));
2781 }
2782
2783 // Print all at once to ensure thread friendly result.
2784 if (newLine) {
2785 out.println(sb.toString());
2786 } else {
2787 out.print(sb.toString());
2788 }
2789
2790 out.flush();
2791
2792 return UNDEFINED;
2793 }
2794
2795 private <T extends ScriptObject> T initConstructor(final String name, final Class<T> clazz) {
2796 try {
2797 // Assuming class name pattern for built-in JS constructors.
2798 final StringBuilder sb = new StringBuilder("jdk.nashorn.internal.objects.");
2799
2800 sb.append("Native");
2801 sb.append(name);
2802 sb.append("$Constructor");
2803
2804 final Class<?> funcClass = Class.forName(sb.toString());
2805 final T res = clazz.cast(funcClass.newInstance());
2806
2807 if (res instanceof ScriptFunction) {
2808 // All global constructor prototypes are not-writable,
2809 // not-enumerable and not-configurable.
2810 final ScriptFunction func = (ScriptFunction)res;
2811 func.modifyOwnProperty(func.getProperty("prototype"), Attribute.NON_ENUMERABLE_CONSTANT);
2812 }
2813
2814 if (res.getProto() == null) {
2815 res.setInitialProto(getObjectPrototype());
2816 }
2817
2818 res.setIsBuiltin();
2819
2820 return res;
2821 } catch (final ClassNotFoundException | InstantiationException | IllegalAccessException e) {
2822 throw new RuntimeException(e);
2823 }
2824 }
2825
2826 private List<jdk.nashorn.internal.runtime.Property> extractBuiltinProperties(final String name, final ScriptObject func) {
2827 final List<jdk.nashorn.internal.runtime.Property> list = new ArrayList<>();
2828
2829 list.addAll(Arrays.asList(func.getMap().getProperties()));
2830
2831 if (func instanceof ScriptFunction) {
2832 final ScriptObject proto = ScriptFunction.getPrototype((ScriptFunction)func);
2833 if (proto != null) {
2834 list.addAll(Arrays.asList(proto.getMap().getProperties()));
2835 }
2836 }
2837
2838 final jdk.nashorn.internal.runtime.Property prop = getProperty(name);
2839 if (prop != null) {
2840 list.add(prop);
2841 }
2842
2843 return list;
2844 }
2845
2846 /**
2847 * Given a builtin object, traverse its properties recursively and associate them with a name that
2848 * will be a key to their invalidation switchpoint.
2849 * @param name name for key
2850 * @param func builtin script object
2851 */
2852 private void tagBuiltinProperties(final String name, final ScriptObject func) {
2853 SwitchPoint sp = context.getBuiltinSwitchPoint(name);
2854 if (sp == null) {
2855 sp = context.newBuiltinSwitchPoint(name);
2856 }
2857
2858 //get all builtin properties in this builtin object and register switchpoints keyed on the propery name,
2859 //one overwrite destroys all for now, e.g. Function.prototype.apply = 17; also destroys Function.prototype.call etc
2860 for (final jdk.nashorn.internal.runtime.Property prop : extractBuiltinProperties(name, func)) {
2861 prop.setBuiltinSwitchPoint(sp);
2862 }
2863 }
2864
2865 // Function and Object constructors are inter-dependent. Also,
2866 // Function.prototype
2867 // functions are not properly initialized. We fix the references here.
2868 // NOTE: be careful if you want to re-order the operations here. You may
2869 // have
2870 // to play with object references carefully!!
2871 private void initFunctionAndObject() {
2872 // First-n-foremost is Function
2873
2874 this.builtinFunction = initConstructor("Function", ScriptFunction.class);
2875
2876 // create global anonymous function
2877 final ScriptFunction anon = ScriptFunctionImpl.newAnonymousFunction();
2878 // need to copy over members of Function.prototype to anon function
2879 anon.addBoundProperties(getFunctionPrototype());
2880
2881 // Function.prototype === Object.getPrototypeOf(Function) ===
2882 // <anon-function>
2883 builtinFunction.setInitialProto(anon);
2884 builtinFunction.setPrototype(anon);
2885 anon.set("constructor", builtinFunction, 0);
2886 anon.deleteOwnProperty(anon.getMap().findProperty("prototype"));
2887
2888 // use "getter" so that [[ThrowTypeError]] function's arity is 0 - as specified in step 10 of section 13.2.3
2889 this.typeErrorThrower = new ScriptFunctionImpl("TypeErrorThrower", Lookup.TYPE_ERROR_THROWER_GETTER, null, null, 0);
2890 typeErrorThrower.setPrototype(UNDEFINED);
2891 // Non-constructor built-in functions do not have "prototype" property
2892 typeErrorThrower.deleteOwnProperty(typeErrorThrower.getMap().findProperty("prototype"));
2893 typeErrorThrower.preventExtensions();
2894
2895 // now initialize Object
2896 this.builtinObject = initConstructor("Object", ScriptFunction.class);
2897 final ScriptObject ObjectPrototype = getObjectPrototype();
2898 // Object.getPrototypeOf(Function.prototype) === Object.prototype
2899 anon.setInitialProto(ObjectPrototype);
2900
2901 // ES6 draft compliant __proto__ property of Object.prototype
2902 // accessors on Object.prototype for "__proto__"
2903 final ScriptFunction getProto = ScriptFunctionImpl.makeFunction("getProto", NativeObject.GET__PROTO__);
2904 final ScriptFunction setProto = ScriptFunctionImpl.makeFunction("setProto", NativeObject.SET__PROTO__);
2905 ObjectPrototype.addOwnProperty("__proto__", Attribute.NOT_ENUMERABLE, getProto, setProto);
2906
2907 // Function valued properties of Function.prototype were not properly
2908 // initialized. Because, these were created before global.function and
2909 // global.object were not initialized.
2910 jdk.nashorn.internal.runtime.Property[] properties = getFunctionPrototype().getMap().getProperties();
2911 for (final jdk.nashorn.internal.runtime.Property property : properties) {
2912 final Object key = property.getKey();
2913 final Object value = builtinFunction.get(key);
2914
2915 if (value instanceof ScriptFunction && value != anon) {
2916 final ScriptFunction func = (ScriptFunction)value;
2917 func.setInitialProto(getFunctionPrototype());
2918 final ScriptObject prototype = ScriptFunction.getPrototype(func);
2919 if (prototype != null) {
2920 prototype.setInitialProto(ObjectPrototype);
2921 }
2922 }
2923 }
2924
2925 // For function valued properties of Object and Object.prototype, make
2926 // sure prototype's proto chain ends with Object.prototype
2927 for (final jdk.nashorn.internal.runtime.Property property : builtinObject.getMap().getProperties()) {
2928 final Object key = property.getKey();
2929 final Object value = builtinObject.get(key);
2930
2931 if (value instanceof ScriptFunction) {
2932 final ScriptFunction func = (ScriptFunction)value;
2933 final ScriptObject prototype = ScriptFunction.getPrototype(func);
2934 if (prototype != null) {
2935 prototype.setInitialProto(ObjectPrototype);
2936 }
2937 }
2938 }
2939
2940 properties = getObjectPrototype().getMap().getProperties();
2941
2942 for (final jdk.nashorn.internal.runtime.Property property : properties) {
2943 final Object key = property.getKey();
2944 if (key.equals("constructor")) {
2945 continue;
2946 }
2947
2948 final Object value = ObjectPrototype.get(key);
2949 if (value instanceof ScriptFunction) {
2950 final ScriptFunction func = (ScriptFunction)value;
2951 final ScriptObject prototype = ScriptFunction.getPrototype(func);
2952 if (prototype != null) {
2953 prototype.setInitialProto(ObjectPrototype);
2954 }
2955 }
2956 }
2957
2958 tagBuiltinProperties("Object", builtinObject);
2959 tagBuiltinProperties("Function", builtinFunction);
2960 tagBuiltinProperties("Function", anon);
2961 }
2962
2963 private static MethodHandle findOwnMH_S(final String name, final Class<?> rtype, final Class<?>... types) {
2964 return MH.findStatic(MethodHandles.lookup(), Global.class, name, MH.type(rtype, types));
2965 }
2966
2967 RegExpResult getLastRegExpResult() {
2968 return lastRegExpResult;
2969 }
2970
2971 void setLastRegExpResult(final RegExpResult regExpResult) {
2972 this.lastRegExpResult = regExpResult;
2973 }
2974
2975 @Override
2976 protected boolean isGlobal() {
2977 return true;
2978 }
2979
2980 /**
2981 * A class representing the ES6 global lexical scope.
2982 */
2983 private static class LexicalScope extends ScriptObject {
2984
2985 LexicalScope(final Global global) {
2986 super(global, PropertyMap.newMap());
2987 }
2988
2989 @Override
2990 protected GuardedInvocation findGetMethod(final CallSiteDescriptor desc, final LinkRequest request, final String operator) {
2991 return filterInvocation(super.findGetMethod(desc, request, operator));
2992 }
2993
2994 @Override
2995 protected GuardedInvocation findSetMethod(final CallSiteDescriptor desc, final LinkRequest request) {
2996 return filterInvocation(super.findSetMethod(desc, request));
2997 }
2998
2999 @Override
3000 protected PropertyMap addBoundProperty(final PropertyMap propMap, final ScriptObject source, final jdk.nashorn.internal.runtime.Property property) {
3001 // We override this method just to make it callable by Global
3002 return super.addBoundProperty(propMap, source, property);
3003 }
3004
3005 private static GuardedInvocation filterInvocation(final GuardedInvocation invocation) {
3006 final MethodType type = invocation.getInvocation().type();
3007 return invocation.asType(type.changeParameterType(0, Object.class)).filterArguments(0, LEXICAL_SCOPE_FILTER);
3008 }
3009 }
3010
3011 }