v8  4.5.103(node4.8.7)
V8 is Google's open source JavaScript engine
v8.h
Go to the documentation of this file.
1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
15 #ifndef V8_H_
16 #define V8_H_
17 
18 #include <stddef.h>
19 #include <stdint.h>
20 #include <stdio.h>
21 
22 #include "v8-version.h"
23 #include "v8config.h"
24 
25 // We reserve the V8_* prefix for macros defined in V8 public API and
26 // assume there are no name conflicts with the embedder's code.
27 
28 #ifdef V8_OS_WIN
29 
30 // Setup for Windows DLL export/import. When building the V8 DLL the
31 // BUILDING_V8_SHARED needs to be defined. When building a program which uses
32 // the V8 DLL USING_V8_SHARED needs to be defined. When either building the V8
33 // static library or building a program which uses the V8 static library neither
34 // BUILDING_V8_SHARED nor USING_V8_SHARED should be defined.
35 #if defined(BUILDING_V8_SHARED) && defined(USING_V8_SHARED)
36 #error both BUILDING_V8_SHARED and USING_V8_SHARED are set - please check the\
37  build configuration to ensure that at most one of these is set
38 #endif
39 
40 #ifdef BUILDING_V8_SHARED
41 # define V8_EXPORT __declspec(dllexport)
42 #elif USING_V8_SHARED
43 # define V8_EXPORT __declspec(dllimport)
44 #else
45 # define V8_EXPORT
46 #endif // BUILDING_V8_SHARED
47 
48 #else // V8_OS_WIN
49 
50 // Setup for Linux shared library export.
51 #if V8_HAS_ATTRIBUTE_VISIBILITY && defined(V8_SHARED)
52 # ifdef BUILDING_V8_SHARED
53 # define V8_EXPORT __attribute__ ((visibility("default")))
54 # else
55 # define V8_EXPORT
56 # endif
57 #else
58 # define V8_EXPORT
59 #endif
60 
61 #endif // V8_OS_WIN
62 
66 namespace v8 {
67 
68 class AccessorSignature;
69 class Array;
70 class Boolean;
71 class BooleanObject;
72 class Context;
73 class CpuProfiler;
74 class Data;
75 class Date;
76 class External;
77 class Function;
78 class FunctionTemplate;
79 class HeapProfiler;
80 class ImplementationUtilities;
81 class Int32;
82 class Integer;
83 class Isolate;
84 template <class T>
85 class Maybe;
86 class Name;
87 class Number;
88 class NumberObject;
89 class Object;
90 class ObjectOperationDescriptor;
91 class ObjectTemplate;
92 class Platform;
93 class Primitive;
94 class Promise;
95 class RawOperationDescriptor;
96 class Script;
97 class SharedArrayBuffer;
98 class Signature;
99 class StartupData;
100 class StackFrame;
101 class StackTrace;
102 class String;
103 class StringObject;
104 class Symbol;
105 class SymbolObject;
106 class Uint32;
107 class Utils;
108 class Value;
109 template <class T> class Local;
110 template <class T>
112 template <class T> class Eternal;
113 template<class T> class NonCopyablePersistentTraits;
114 template<class T> class PersistentBase;
115 template<class T,
117 template <class T>
118 class Global;
119 template<class K, class V, class T> class PersistentValueMap;
120 template <class K, class V, class T>
122 template <class K, class V, class T>
123 class GlobalValueMap;
124 template<class V, class T> class PersistentValueVector;
125 template<class T, class P> class WeakCallbackObject;
126 class FunctionTemplate;
127 class ObjectTemplate;
128 class Data;
129 template<typename T> class FunctionCallbackInfo;
130 template<typename T> class PropertyCallbackInfo;
131 class StackTrace;
132 class StackFrame;
133 class Isolate;
134 class CallHandlerHelper;
136 template<typename T> class ReturnValue;
137 
138 namespace internal {
139 class Arguments;
140 class Heap;
141 class HeapObject;
142 class Isolate;
143 class Object;
144 struct StreamedSource;
145 template<typename T> class CustomArguments;
146 class PropertyCallbackArguments;
147 class FunctionCallbackArguments;
148 class GlobalHandles;
149 }
150 
151 
155 class UniqueId {
156  public:
157  explicit UniqueId(intptr_t data)
158  : data_(data) {}
159 
160  bool operator==(const UniqueId& other) const {
161  return data_ == other.data_;
162  }
163 
164  bool operator!=(const UniqueId& other) const {
165  return data_ != other.data_;
166  }
167 
168  bool operator<(const UniqueId& other) const {
169  return data_ < other.data_;
170  }
171 
172  private:
173  intptr_t data_;
174 };
175 
176 // --- Handles ---
177 
178 #define TYPE_CHECK(T, S) \
179  while (false) { \
180  *(static_cast<T* volatile*>(0)) = static_cast<S*>(0); \
181  }
182 
183 
209 template <class T>
210 class Local {
211  public:
212  V8_INLINE Local() : val_(0) {}
213  template <class S>
215  : val_(reinterpret_cast<T*>(*that)) {
221  TYPE_CHECK(T, S);
222  }
223 
227  V8_INLINE bool IsEmpty() const { return val_ == 0; }
228 
232  V8_INLINE void Clear() { val_ = 0; }
233 
234  V8_INLINE T* operator->() const { return val_; }
235 
236  V8_INLINE T* operator*() const { return val_; }
237 
244  template <class S>
245  V8_INLINE bool operator==(const Local<S>& that) const {
246  internal::Object** a = reinterpret_cast<internal::Object**>(this->val_);
247  internal::Object** b = reinterpret_cast<internal::Object**>(that.val_);
248  if (a == 0) return b == 0;
249  if (b == 0) return false;
250  return *a == *b;
251  }
252 
253  template <class S> V8_INLINE bool operator==(
254  const PersistentBase<S>& that) const {
255  internal::Object** a = reinterpret_cast<internal::Object**>(this->val_);
256  internal::Object** b = reinterpret_cast<internal::Object**>(that.val_);
257  if (a == 0) return b == 0;
258  if (b == 0) return false;
259  return *a == *b;
260  }
261 
268  template <class S>
269  V8_INLINE bool operator!=(const Local<S>& that) const {
270  return !operator==(that);
271  }
272 
273  template <class S> V8_INLINE bool operator!=(
274  const Persistent<S>& that) const {
275  return !operator==(that);
276  }
277 
278  template <class S> V8_INLINE static Local<T> Cast(Local<S> that) {
279 #ifdef V8_ENABLE_CHECKS
280  // If we're going to perform the type check then we have to check
281  // that the handle isn't empty before doing the checked cast.
282  if (that.IsEmpty()) return Local<T>();
283 #endif
284  return Local<T>(T::Cast(*that));
285  }
286 
287 
288  template <class S> V8_INLINE Local<S> As() {
289  return Local<S>::Cast(*this);
290  }
291 
297  V8_INLINE static Local<T> New(Isolate* isolate, Local<T> that);
298  V8_INLINE static Local<T> New(Isolate* isolate,
299  const PersistentBase<T>& that);
300 
301  private:
302  friend class Utils;
303  template<class F> friend class Eternal;
304  template<class F> friend class PersistentBase;
305  template<class F, class M> friend class Persistent;
306  template<class F> friend class Local;
307  template <class F>
308  friend class MaybeLocal;
309  template<class F> friend class FunctionCallbackInfo;
310  template<class F> friend class PropertyCallbackInfo;
311  friend class String;
312  friend class Object;
313  friend class Context;
314  template<class F> friend class internal::CustomArguments;
315  friend Local<Primitive> Undefined(Isolate* isolate);
316  friend Local<Primitive> Null(Isolate* isolate);
317  friend Local<Boolean> True(Isolate* isolate);
318  friend Local<Boolean> False(Isolate* isolate);
319  friend class HandleScope;
320  friend class EscapableHandleScope;
321  template <class F1, class F2, class F3>
323  template<class F1, class F2> friend class PersistentValueVector;
324 
325  template <class S>
326  V8_INLINE Local(S* that)
327  : val_(that) {}
328  V8_INLINE static Local<T> New(Isolate* isolate, T* that);
329  T* val_;
330 };
331 
332 
333 #if !defined(V8_IMMINENT_DEPRECATION_WARNINGS)
334 // Local is an alias for Local for historical reasons.
335 template <class T>
336 using Handle = Local<T>;
337 #endif
338 
339 
350 template <class T>
351 class MaybeLocal {
352  public:
353  V8_INLINE MaybeLocal() : val_(nullptr) {}
354  template <class S>
356  : val_(reinterpret_cast<T*>(*that)) {
357  TYPE_CHECK(T, S);
358  }
359 
360  V8_INLINE bool IsEmpty() const { return val_ == nullptr; }
361 
362  template <class S>
364  out->val_ = IsEmpty() ? nullptr : this->val_;
365  return !IsEmpty();
366  }
367 
368  // Will crash if the MaybeLocal<> is empty.
370 
371  template <class S>
372  V8_INLINE Local<S> FromMaybe(Local<S> default_value) const {
373  return IsEmpty() ? default_value : Local<S>(val_);
374  }
375 
376  private:
377  T* val_;
378 };
379 
380 
381 // Eternal handles are set-once handles that live for the life of the isolate.
382 template <class T> class Eternal {
383  public:
384  V8_INLINE Eternal() : index_(kInitialValue) { }
385  template<class S>
386  V8_INLINE Eternal(Isolate* isolate, Local<S> handle) : index_(kInitialValue) {
387  Set(isolate, handle);
388  }
389  // Can only be safely called if already set.
390  V8_INLINE Local<T> Get(Isolate* isolate);
391  V8_INLINE bool IsEmpty() { return index_ == kInitialValue; }
392  template<class S> V8_INLINE void Set(Isolate* isolate, Local<S> handle);
393 
394  private:
395  static const int kInitialValue = -1;
396  int index_;
397 };
398 
399 
400 static const int kInternalFieldsInWeakCallback = 2;
401 
402 
403 template <typename T>
405  public:
406  typedef void (*Callback)(const WeakCallbackInfo<T>& data);
407 
408  WeakCallbackInfo(Isolate* isolate, T* parameter,
409  void* internal_fields[kInternalFieldsInWeakCallback],
410  Callback* callback)
411  : isolate_(isolate), parameter_(parameter), callback_(callback) {
412  for (int i = 0; i < kInternalFieldsInWeakCallback; ++i) {
413  internal_fields_[i] = internal_fields[i];
414  }
415  }
416 
417  V8_INLINE Isolate* GetIsolate() const { return isolate_; }
418  V8_INLINE T* GetParameter() const { return parameter_; }
419  V8_INLINE void* GetInternalField(int index) const;
420 
421  V8_INLINE V8_DEPRECATE_SOON("use indexed version",
422  void* GetInternalField1() const) {
423  return internal_fields_[0];
424  }
425  V8_INLINE V8_DEPRECATE_SOON("use indexed version",
426  void* GetInternalField2() const) {
427  return internal_fields_[1];
428  }
429 
430  bool IsFirstPass() const { return callback_ != nullptr; }
431 
432  // When first called, the embedder MUST Reset() the Global which triggered the
433  // callback. The Global itself is unusable for anything else. No v8 other api
434  // calls may be called in the first callback. Should additional work be
435  // required, the embedder must set a second pass callback, which will be
436  // called after all the initial callbacks are processed.
437  // Calling SetSecondPassCallback on the second pass will immediately crash.
438  void SetSecondPassCallback(Callback callback) const { *callback_ = callback; }
439 
440  private:
441  Isolate* isolate_;
442  T* parameter_;
443  Callback* callback_;
444  void* internal_fields_[kInternalFieldsInWeakCallback];
445 };
446 
447 
448 template <class T, class P>
450  public:
451  typedef void (*Callback)(const WeakCallbackData<T, P>& data);
452 
453  WeakCallbackData(Isolate* isolate, P* parameter, Local<T> handle)
454  : isolate_(isolate), parameter_(parameter), handle_(handle) {}
455 
456  V8_INLINE Isolate* GetIsolate() const { return isolate_; }
457  V8_INLINE P* GetParameter() const { return parameter_; }
458  V8_INLINE Local<T> GetValue() const { return handle_; }
459 
460  private:
461  Isolate* isolate_;
462  P* parameter_;
463  Local<T> handle_;
464 };
465 
466 
467 // TODO(dcarney): delete this with WeakCallbackData
468 template <class T>
470 
471 
473 
474 
488 template <class T> class PersistentBase {
489  public:
494  V8_INLINE void Reset();
499  template <class S>
500  V8_INLINE void Reset(Isolate* isolate, const Local<S>& other);
501 
506  template <class S>
507  V8_INLINE void Reset(Isolate* isolate, const PersistentBase<S>& other);
508 
509  V8_INLINE bool IsEmpty() const { return val_ == NULL; }
510  V8_INLINE void Empty() { val_ = 0; }
511 
512  template <class S>
513  V8_INLINE bool operator==(const PersistentBase<S>& that) const {
514  internal::Object** a = reinterpret_cast<internal::Object**>(this->val_);
515  internal::Object** b = reinterpret_cast<internal::Object**>(that.val_);
516  if (a == NULL) return b == NULL;
517  if (b == NULL) return false;
518  return *a == *b;
519  }
520 
521  template <class S>
522  V8_INLINE bool operator==(const Local<S>& that) const {
523  internal::Object** a = reinterpret_cast<internal::Object**>(this->val_);
524  internal::Object** b = reinterpret_cast<internal::Object**>(that.val_);
525  if (a == NULL) return b == NULL;
526  if (b == NULL) return false;
527  return *a == *b;
528  }
529 
530  template <class S>
531  V8_INLINE bool operator!=(const PersistentBase<S>& that) const {
532  return !operator==(that);
533  }
534 
535  template <class S>
536  V8_INLINE bool operator!=(const Local<S>& that) const {
537  return !operator==(that);
538  }
539 
547  template <typename P>
549  "use WeakCallbackInfo version",
550  void SetWeak(P* parameter,
551  typename WeakCallbackData<T, P>::Callback callback));
552 
553  template <typename S, typename P>
555  "use WeakCallbackInfo version",
556  void SetWeak(P* parameter,
557  typename WeakCallbackData<S, P>::Callback callback));
558 
559  // Phantom persistents work like weak persistents, except that the pointer to
560  // the object being collected is not available in the finalization callback.
561  // This enables the garbage collector to collect the object and any objects
562  // it references transitively in one GC cycle. At the moment you can either
563  // specify a parameter for the callback or the location of two internal
564  // fields in the dying object.
565  template <typename P>
567  "use SetWeak",
568  void SetPhantom(P* parameter,
569  typename WeakCallbackInfo<P>::Callback callback,
570  int internal_field_index1 = -1,
571  int internal_field_index2 = -1));
572 
573  template <typename P>
574  V8_INLINE void SetWeak(P* parameter,
575  typename WeakCallbackInfo<P>::Callback callback,
576  WeakCallbackType type);
577 
578  template<typename P>
579  V8_INLINE P* ClearWeak();
580 
581  // TODO(dcarney): remove this.
582  V8_INLINE void ClearWeak() { ClearWeak<void>(); }
583 
590  V8_INLINE void MarkIndependent();
591 
601 
602  V8_INLINE bool IsIndependent() const;
603 
605  V8_INLINE bool IsNearDeath() const;
606 
608  V8_INLINE bool IsWeak() const;
609 
614  V8_INLINE void SetWrapperClassId(uint16_t class_id);
615 
620  V8_INLINE uint16_t WrapperClassId() const;
621 
622  private:
623  friend class Isolate;
624  friend class Utils;
625  template<class F> friend class Local;
626  template<class F1, class F2> friend class Persistent;
627  template <class F>
628  friend class Global;
629  template<class F> friend class PersistentBase;
630  template<class F> friend class ReturnValue;
631  template <class F1, class F2, class F3>
633  template<class F1, class F2> friend class PersistentValueVector;
634  friend class Object;
635 
636  explicit V8_INLINE PersistentBase(T* val) : val_(val) {}
637  PersistentBase(PersistentBase& other) = delete; // NOLINT
638  void operator=(PersistentBase&) = delete;
639  V8_INLINE static T* New(Isolate* isolate, T* that);
640 
641  T* val_;
642 };
643 
644 
651 template<class T>
652 class NonCopyablePersistentTraits {
653  public:
655  static const bool kResetInDestructor = false;
656  template<class S, class M>
657  V8_INLINE static void Copy(const Persistent<S, M>& source,
658  NonCopyablePersistent* dest) {
659  Uncompilable<Object>();
660  }
661  // TODO(dcarney): come up with a good compile error here.
662  template<class O> V8_INLINE static void Uncompilable() {
663  TYPE_CHECK(O, Primitive);
664  }
665 };
666 
667 
672 template<class T>
675  static const bool kResetInDestructor = true;
676  template<class S, class M>
677  static V8_INLINE void Copy(const Persistent<S, M>& source,
678  CopyablePersistent* dest) {
679  // do nothing, just allow copy
680  }
681 };
682 
683 
692 template <class T, class M> class Persistent : public PersistentBase<T> {
693  public:
703  template <class S>
705  : PersistentBase<T>(PersistentBase<T>::New(isolate, *that)) {
706  TYPE_CHECK(T, S);
707  }
713  template <class S, class M2>
715  : PersistentBase<T>(PersistentBase<T>::New(isolate, *that)) {
716  TYPE_CHECK(T, S);
717  }
725  Copy(that);
726  }
727  template <class S, class M2>
729  Copy(that);
730  }
731  V8_INLINE Persistent& operator=(const Persistent& that) { // NOLINT
732  Copy(that);
733  return *this;
734  }
735  template <class S, class M2>
737  Copy(that);
738  return *this;
739  }
746  if (M::kResetInDestructor) this->Reset();
747  }
748 
749  // TODO(dcarney): this is pretty useless, fix or remove
750  template <class S>
751  V8_INLINE static Persistent<T>& Cast(Persistent<S>& that) { // NOLINT
752 #ifdef V8_ENABLE_CHECKS
753  // If we're going to perform the type check then we have to check
754  // that the handle isn't empty before doing the checked cast.
755  if (!that.IsEmpty()) T::Cast(*that);
756 #endif
757  return reinterpret_cast<Persistent<T>&>(that);
758  }
759 
760  // TODO(dcarney): this is pretty useless, fix or remove
761  template <class S> V8_INLINE Persistent<S>& As() { // NOLINT
762  return Persistent<S>::Cast(*this);
763  }
764 
765  private:
766  friend class Isolate;
767  friend class Utils;
768  template<class F> friend class Local;
769  template<class F1, class F2> friend class Persistent;
770  template<class F> friend class ReturnValue;
771 
772  template <class S> V8_INLINE Persistent(S* that) : PersistentBase<T>(that) { }
773  V8_INLINE T* operator*() const { return this->val_; }
774  template<class S, class M2>
775  V8_INLINE void Copy(const Persistent<S, M2>& that);
776 };
777 
778 
784 template <class T>
785 class Global : public PersistentBase<T> {
786  public:
790  V8_INLINE Global() : PersistentBase<T>(nullptr) {}
796  template <class S>
798  : PersistentBase<T>(PersistentBase<T>::New(isolate, *that)) {
799  TYPE_CHECK(T, S);
800  }
806  template <class S>
807  V8_INLINE Global(Isolate* isolate, const PersistentBase<S>& that)
808  : PersistentBase<T>(PersistentBase<T>::New(isolate, that.val_)) {
809  TYPE_CHECK(T, S);
810  }
814  V8_INLINE Global(Global&& other) : PersistentBase<T>(other.val_) {
815  other.val_ = nullptr;
816  }
817  V8_INLINE ~Global() { this->Reset(); }
821  template <class S>
823  TYPE_CHECK(T, S);
824  if (this != &rhs) {
825  this->Reset();
826  this->val_ = rhs.val_;
827  rhs.val_ = nullptr;
828  }
829  return *this;
830  }
834  Global Pass() { return static_cast<Global&&>(*this); }
835 
836  /*
837  * For compatibility with Chromium's base::Bind (base::Passed).
838  */
839  typedef void MoveOnlyTypeForCPP03;
840 
841  private:
842  template <class F>
843  friend class ReturnValue;
844  Global(Global&) = delete;
845  void operator=(Global&) = delete;
846  V8_INLINE T* operator*() const { return this->val_; }
847 };
848 
849 
850 // UniquePersistent is an alias for Global for historical reason.
851 template <class T>
853 
854 
870  public:
871  HandleScope(Isolate* isolate);
872 
873  ~HandleScope();
874 
878  static int NumberOfHandles(Isolate* isolate);
879 
881  return reinterpret_cast<Isolate*>(isolate_);
882  }
883 
884  protected:
886 
887  void Initialize(Isolate* isolate);
888 
889  static internal::Object** CreateHandle(internal::Isolate* isolate,
890  internal::Object* value);
891 
892  private:
893  // Uses heap_object to obtain the current Isolate.
894  static internal::Object** CreateHandle(internal::HeapObject* heap_object,
895  internal::Object* value);
896 
897  // Make it hard to create heap-allocated or illegal handle scopes by
898  // disallowing certain operations.
899  HandleScope(const HandleScope&);
900  void operator=(const HandleScope&);
901  void* operator new(size_t size);
902  void operator delete(void*, size_t);
903 
904  internal::Isolate* isolate_;
905  internal::Object** prev_next_;
906  internal::Object** prev_limit_;
907 
908  // Local::New uses CreateHandle with an Isolate* parameter.
909  template<class F> friend class Local;
910 
911  // Object::GetInternalField and Context::GetEmbedderData use CreateHandle with
912  // a HeapObject* in their shortcuts.
913  friend class Object;
914  friend class Context;
915 };
916 
917 
923  public:
924  EscapableHandleScope(Isolate* isolate);
926 
931  template <class T>
933  internal::Object** slot =
934  Escape(reinterpret_cast<internal::Object**>(*value));
935  return Local<T>(reinterpret_cast<T*>(slot));
936  }
937 
938  private:
939  internal::Object** Escape(internal::Object** escape_value);
940 
941  // Make it hard to create heap-allocated or illegal handle scopes by
942  // disallowing certain operations.
944  void operator=(const EscapableHandleScope&);
945  void* operator new(size_t size);
946  void operator delete(void*, size_t);
947 
948  internal::Object** escape_slot_;
949 };
950 
952  public:
953  SealHandleScope(Isolate* isolate);
954  ~SealHandleScope();
955 
956  private:
957  // Make it hard to create heap-allocated or illegal handle scopes by
958  // disallowing certain operations.
960  void operator=(const SealHandleScope&);
961  void* operator new(size_t size);
962  void operator delete(void*, size_t);
963 
964  internal::Isolate* isolate_;
965  int prev_level_;
966  internal::Object** prev_limit_;
967 };
968 
969 
970 // --- Special objects ---
971 
972 
977  private:
978  Data();
979 };
980 
981 
986  public:
987  V8_INLINE ScriptOriginOptions(bool is_embedder_debug_script = false,
988  bool is_shared_cross_origin = false,
989  bool is_opaque = false)
990  : flags_((is_embedder_debug_script ? kIsEmbedderDebugScript : 0) |
991  (is_shared_cross_origin ? kIsSharedCrossOrigin : 0) |
992  (is_opaque ? kIsOpaque : 0)) {}
994  : flags_(flags &
995  (kIsEmbedderDebugScript | kIsSharedCrossOrigin | kIsOpaque)) {}
996  bool IsEmbedderDebugScript() const {
997  return (flags_ & kIsEmbedderDebugScript) != 0;
998  }
999  bool IsSharedCrossOrigin() const {
1000  return (flags_ & kIsSharedCrossOrigin) != 0;
1001  }
1002  bool IsOpaque() const { return (flags_ & kIsOpaque) != 0; }
1003  int Flags() const { return flags_; }
1004 
1005  private:
1006  enum {
1007  kIsEmbedderDebugScript = 1,
1008  kIsSharedCrossOrigin = 1 << 1,
1009  kIsOpaque = 1 << 2
1010  };
1011  const int flags_;
1012 };
1013 
1018  public:
1020  Local<Value> resource_name,
1021  Local<Integer> resource_line_offset = Local<Integer>(),
1022  Local<Integer> resource_column_offset = Local<Integer>(),
1023  Local<Boolean> resource_is_shared_cross_origin = Local<Boolean>(),
1024  Local<Integer> script_id = Local<Integer>(),
1025  Local<Boolean> resource_is_embedder_debug_script = Local<Boolean>(),
1026  Local<Value> source_map_url = Local<Value>(),
1027  Local<Boolean> resource_is_opaque = Local<Boolean>());
1036  V8_INLINE ScriptOriginOptions Options() const { return options_; }
1037 
1038  private:
1039  Local<Value> resource_name_;
1040  Local<Integer> resource_line_offset_;
1041  Local<Integer> resource_column_offset_;
1042  ScriptOriginOptions options_;
1043  Local<Integer> script_id_;
1044  Local<Value> source_map_url_;
1045 };
1046 
1047 
1052  public:
1056  Local<Script> BindToCurrentContext();
1057 
1058  int GetId();
1059  Local<Value> GetScriptName();
1060 
1064  Local<Value> GetSourceURL();
1068  Local<Value> GetSourceMappingURL();
1069 
1074  int GetLineNumber(int code_pos);
1075 
1076  static const int kNoScriptId = 0;
1077 };
1078 
1079 
1085  public:
1089  static V8_DEPRECATE_SOON(
1090  "Use maybe version",
1091  Local<Script> Compile(Local<String> source,
1092  ScriptOrigin* origin = nullptr));
1094  Local<Context> context, Local<String> source,
1095  ScriptOrigin* origin = nullptr);
1096 
1097  static Local<Script> V8_DEPRECATE_SOON("Use maybe version",
1098  Compile(Local<String> source,
1099  Local<String> file_name));
1100 
1106  V8_DEPRECATE_SOON("Use maybe version", Local<Value> Run());
1108 
1112  Local<UnboundScript> GetUnboundScript();
1113 
1114  V8_DEPRECATED("Use GetUnboundScript()->GetId()",
1115  int GetId()) {
1116  return GetUnboundScript()->GetId();
1117  }
1118 };
1119 
1120 
1125  public:
1136  BufferOwned
1137  };
1138 
1140  : data(NULL),
1141  length(0),
1142  rejected(false),
1143  buffer_policy(BufferNotOwned) {}
1144 
1145  // If buffer_policy is BufferNotOwned, the caller keeps the ownership of
1146  // data and guarantees that it stays alive until the CachedData object is
1147  // destroyed. If the policy is BufferOwned, the given data will be deleted
1148  // (with delete[]) when the CachedData object is destroyed.
1149  CachedData(const uint8_t* data, int length,
1150  BufferPolicy buffer_policy = BufferNotOwned);
1151  ~CachedData();
1152  // TODO(marja): Async compilation; add constructors which take a callback
1153  // which will be called when V8 no longer needs the data.
1154  const uint8_t* data;
1155  int length;
1156  bool rejected;
1158 
1159  private:
1160  // Prevent copying. Not implemented.
1161  CachedData(const CachedData&);
1162  CachedData& operator=(const CachedData&);
1163  };
1164 
1168  class Source {
1169  public:
1170  // Source takes ownership of CachedData.
1171  V8_INLINE Source(Local<String> source_string, const ScriptOrigin& origin,
1172  CachedData* cached_data = NULL);
1173  V8_INLINE Source(Local<String> source_string,
1174  CachedData* cached_data = NULL);
1175  V8_INLINE ~Source();
1176 
1177  // Ownership of the CachedData or its buffers is *not* transferred to the
1178  // caller. The CachedData object is alive as long as the Source object is
1179  // alive.
1180  V8_INLINE const CachedData* GetCachedData() const;
1181 
1182  private:
1183  friend class ScriptCompiler;
1184  // Prevent copying. Not implemented.
1185  Source(const Source&);
1186  Source& operator=(const Source&);
1187 
1188  Local<String> source_string;
1189 
1190  // Origin information
1191  Local<Value> resource_name;
1192  Local<Integer> resource_line_offset;
1193  Local<Integer> resource_column_offset;
1194  ScriptOriginOptions resource_options;
1195  Local<Value> source_map_url;
1196 
1197  // Cached data from previous compilation (if a kConsume*Cache flag is
1198  // set), or hold newly generated cache data (kProduce*Cache flags) are
1199  // set when calling a compile method.
1200  CachedData* cached_data;
1201  };
1202 
1208  public:
1210 
1228  virtual size_t GetMoreData(const uint8_t** src) = 0;
1229 
1240  virtual bool SetBookmark();
1241 
1245  virtual void ResetToBookmark();
1246  };
1247 
1248 
1256  public:
1257  enum Encoding { ONE_BYTE, TWO_BYTE, UTF8 };
1258 
1259  StreamedSource(ExternalSourceStream* source_stream, Encoding encoding);
1260  ~StreamedSource();
1261 
1262  // Ownership of the CachedData or its buffers is *not* transferred to the
1263  // caller. The CachedData object is alive as long as the StreamedSource
1264  // object is alive.
1265  const CachedData* GetCachedData() const;
1266 
1267  internal::StreamedSource* impl() const { return impl_; }
1268 
1269  private:
1270  // Prevent copying. Not implemented.
1272  StreamedSource& operator=(const StreamedSource&);
1273 
1274  internal::StreamedSource* impl_;
1275  };
1276 
1282  public:
1284  virtual void Run() = 0;
1285  };
1286 
1288  kNoCompileOptions = 0,
1292  kConsumeCodeCache
1293  };
1294 
1308  static V8_DEPRECATE_SOON("Use maybe version",
1309  Local<UnboundScript> CompileUnbound(
1310  Isolate* isolate, Source* source,
1311  CompileOptions options = kNoCompileOptions));
1312  static V8_WARN_UNUSED_RESULT MaybeLocal<UnboundScript> CompileUnboundScript(
1313  Isolate* isolate, Source* source,
1314  CompileOptions options = kNoCompileOptions);
1315 
1327  static V8_DEPRECATE_SOON(
1328  "Use maybe version",
1329  Local<Script> Compile(Isolate* isolate, Source* source,
1330  CompileOptions options = kNoCompileOptions));
1332  Local<Context> context, Source* source,
1333  CompileOptions options = kNoCompileOptions);
1334 
1346  static ScriptStreamingTask* StartStreamingScript(
1347  Isolate* isolate, StreamedSource* source,
1348  CompileOptions options = kNoCompileOptions);
1349 
1357  static V8_DEPRECATE_SOON(
1358  "Use maybe version",
1359  Local<Script> Compile(Isolate* isolate, StreamedSource* source,
1360  Local<String> full_source_string,
1361  const ScriptOrigin& origin));
1363  Local<Context> context, StreamedSource* source,
1364  Local<String> full_source_string, const ScriptOrigin& origin);
1365 
1384  static uint32_t CachedDataVersionTag();
1385 
1394  static V8_DEPRECATE_SOON(
1395  "Use maybe version",
1396  Local<Script> CompileModule(Isolate* isolate, Source* source,
1397  CompileOptions options = kNoCompileOptions));
1398  static V8_WARN_UNUSED_RESULT MaybeLocal<Script> CompileModule(
1399  Local<Context> context, Source* source,
1400  CompileOptions options = kNoCompileOptions);
1401 
1412  static V8_DEPRECATE_SOON("Use maybe version",
1413  Local<Function> CompileFunctionInContext(
1414  Isolate* isolate, Source* source,
1415  Local<Context> context, size_t arguments_count,
1416  Local<String> arguments[],
1417  size_t context_extension_count,
1418  Local<Object> context_extensions[]));
1419  static V8_WARN_UNUSED_RESULT MaybeLocal<Function> CompileFunctionInContext(
1420  Local<Context> context, Source* source, size_t arguments_count,
1421  Local<String> arguments[], size_t context_extension_count,
1422  Local<Object> context_extensions[]);
1423 
1424  private:
1425  static V8_WARN_UNUSED_RESULT MaybeLocal<UnboundScript> CompileUnboundInternal(
1426  Isolate* isolate, Source* source, CompileOptions options, bool is_module);
1427 };
1428 
1429 
1434  public:
1435  Local<String> Get() const;
1436 
1437  V8_DEPRECATE_SOON("Use maybe version", Local<String> GetSourceLine() const);
1439  Local<Context> context) const;
1440 
1445  ScriptOrigin GetScriptOrigin() const;
1446 
1451  Local<Value> GetScriptResourceName() const;
1452 
1458  Local<StackTrace> GetStackTrace() const;
1459 
1463  V8_DEPRECATE_SOON("Use maybe version", int GetLineNumber() const);
1464  V8_WARN_UNUSED_RESULT Maybe<int> GetLineNumber(Local<Context> context) const;
1465 
1470  int GetStartPosition() const;
1471 
1476  int GetEndPosition() const;
1477 
1482  V8_DEPRECATE_SOON("Use maybe version", int GetStartColumn() const);
1483  V8_WARN_UNUSED_RESULT Maybe<int> GetStartColumn(Local<Context> context) const;
1484 
1489  V8_DEPRECATE_SOON("Use maybe version", int GetEndColumn() const);
1490  V8_WARN_UNUSED_RESULT Maybe<int> GetEndColumn(Local<Context> context) const;
1491 
1496  bool IsSharedCrossOrigin() const;
1497  bool IsOpaque() const;
1498 
1499  // TODO(1245381): Print to a string instead of on a FILE.
1500  static void PrintCurrentStackTrace(Isolate* isolate, FILE* out);
1501 
1502  static const int kNoLineNumberInfo = 0;
1503  static const int kNoColumnInfo = 0;
1504  static const int kNoScriptIdInfo = 0;
1505 };
1506 
1507 
1514  public:
1520  kLineNumber = 1,
1521  kColumnOffset = 1 << 1 | kLineNumber,
1522  kScriptName = 1 << 2,
1523  kFunctionName = 1 << 3,
1524  kIsEval = 1 << 4,
1525  kIsConstructor = 1 << 5,
1526  kScriptNameOrSourceURL = 1 << 6,
1527  kScriptId = 1 << 7,
1528  kExposeFramesAcrossSecurityOrigins = 1 << 8,
1529  kOverview = kLineNumber | kColumnOffset | kScriptName | kFunctionName,
1530  kDetailed = kOverview | kIsEval | kIsConstructor | kScriptNameOrSourceURL
1531  };
1532 
1536  Local<StackFrame> GetFrame(uint32_t index) const;
1537 
1541  int GetFrameCount() const;
1542 
1546  Local<Array> AsArray();
1547 
1555  static Local<StackTrace> CurrentStackTrace(
1556  Isolate* isolate,
1557  int frame_limit,
1558  StackTraceOptions options = kOverview);
1559 };
1560 
1561 
1566  public:
1573  int GetLineNumber() const;
1574 
1582  int GetColumn() const;
1583 
1590  int GetScriptId() const;
1591 
1596  Local<String> GetScriptName() const;
1597 
1604  Local<String> GetScriptNameOrSourceURL() const;
1605 
1609  Local<String> GetFunctionName() const;
1610 
1615  bool IsEval() const;
1616 
1621  bool IsConstructor() const;
1622 };
1623 
1624 
1625 // A StateTag represents a possible state of the VM.
1627 
1628 
1629 // A RegisterState represents the current state of registers used
1630 // by the sampling profiler API.
1632  RegisterState() : pc(NULL), sp(NULL), fp(NULL) {}
1633  void* pc; // Instruction pointer.
1634  void* sp; // Stack pointer.
1635  void* fp; // Frame pointer.
1636 };
1637 
1638 
1639 // The output structure filled up by GetStackSample API function.
1640 struct SampleInfo {
1643 };
1644 
1645 
1650  public:
1658  static V8_DEPRECATE_SOON("Use maybe version",
1659  Local<Value> Parse(Local<String> json_string));
1661  Isolate* isolate, Local<String> json_string);
1662 };
1663 
1664 
1670 class V8_EXPORT NativeWeakMap : public Data {
1671  public:
1672  static Local<NativeWeakMap> New(Isolate* isolate);
1673  void Set(Local<Value> key, Local<Value> value);
1674  Local<Value> Get(Local<Value> key);
1675  bool Has(Local<Value> key);
1676  bool Delete(Local<Value> key);
1677 };
1678 
1679 
1680 // --- Value ---
1681 
1682 
1686 class V8_EXPORT Value : public Data {
1687  public:
1692  V8_INLINE bool IsUndefined() const;
1693 
1698  V8_INLINE bool IsNull() const;
1699 
1703  bool IsTrue() const;
1704 
1708  bool IsFalse() const;
1709 
1714  bool IsName() const;
1715 
1720  V8_INLINE bool IsString() const;
1721 
1726  bool IsSymbol() const;
1727 
1731  bool IsFunction() const;
1732 
1736  bool IsArray() const;
1737 
1741  bool IsObject() const;
1742 
1746  bool IsBoolean() const;
1747 
1751  bool IsNumber() const;
1752 
1756  bool IsExternal() const;
1757 
1761  bool IsInt32() const;
1762 
1766  bool IsUint32() const;
1767 
1771  bool IsDate() const;
1772 
1776  bool IsArgumentsObject() const;
1777 
1781  bool IsBooleanObject() const;
1782 
1786  bool IsNumberObject() const;
1787 
1791  bool IsStringObject() const;
1792 
1797  bool IsSymbolObject() const;
1798 
1802  bool IsNativeError() const;
1803 
1807  bool IsRegExp() const;
1808 
1813  bool IsGeneratorFunction() const;
1814 
1819  bool IsGeneratorObject() const;
1820 
1825  bool IsPromise() const;
1826 
1830  bool IsMap() const;
1831 
1835  bool IsSet() const;
1836 
1840  bool IsMapIterator() const;
1841 
1845  bool IsSetIterator() const;
1846 
1850  bool IsWeakMap() const;
1851 
1855  bool IsWeakSet() const;
1856 
1861  bool IsArrayBuffer() const;
1862 
1867  bool IsArrayBufferView() const;
1868 
1873  bool IsTypedArray() const;
1874 
1879  bool IsUint8Array() const;
1880 
1885  bool IsUint8ClampedArray() const;
1886 
1891  bool IsInt8Array() const;
1892 
1897  bool IsUint16Array() const;
1898 
1903  bool IsInt16Array() const;
1904 
1909  bool IsUint32Array() const;
1910 
1915  bool IsInt32Array() const;
1916 
1921  bool IsFloat32Array() const;
1922 
1927  bool IsFloat64Array() const;
1928 
1933  bool IsFloat32x4() const;
1934 
1939  bool IsDataView() const;
1940 
1945  bool IsSharedArrayBuffer() const;
1946 
1947 
1949  Local<Context> context) const;
1951  Local<Context> context) const;
1953  Local<Context> context) const;
1955  Local<Context> context) const;
1957  Local<Context> context) const;
1959  Local<Context> context) const;
1961  Local<Context> context) const;
1963 
1964  V8_DEPRECATE_SOON("Use maybe version",
1965  Local<Boolean> ToBoolean(Isolate* isolate) const);
1966  V8_DEPRECATE_SOON("Use maybe version",
1967  Local<Number> ToNumber(Isolate* isolate) const);
1968  V8_DEPRECATE_SOON("Use maybe version",
1969  Local<String> ToString(Isolate* isolate) const);
1970  V8_DEPRECATE_SOON("Use maybe version",
1971  Local<String> ToDetailString(Isolate* isolate) const);
1972  V8_DEPRECATE_SOON("Use maybe version",
1973  Local<Object> ToObject(Isolate* isolate) const);
1974  V8_DEPRECATE_SOON("Use maybe version",
1975  Local<Integer> ToInteger(Isolate* isolate) const);
1976  V8_DEPRECATE_SOON("Use maybe version",
1977  Local<Uint32> ToUint32(Isolate* isolate) const);
1978  V8_DEPRECATE_SOON("Use maybe version",
1979  Local<Int32> ToInt32(Isolate* isolate) const);
1980 
1981  inline V8_DEPRECATE_SOON("Use maybe version",
1982  Local<Boolean> ToBoolean() const);
1983  inline V8_DEPRECATE_SOON("Use maybe version", Local<Number> ToNumber() const);
1984  inline V8_DEPRECATE_SOON("Use maybe version", Local<String> ToString() const);
1985  inline V8_DEPRECATE_SOON("Use maybe version",
1986  Local<String> ToDetailString() const);
1987  inline V8_DEPRECATE_SOON("Use maybe version", Local<Object> ToObject() const);
1988  inline V8_DEPRECATE_SOON("Use maybe version",
1989  Local<Integer> ToInteger() const);
1990  inline V8_DEPRECATE_SOON("Use maybe version", Local<Uint32> ToUint32() const);
1991  inline V8_DEPRECATE_SOON("Use maybe version", Local<Int32> ToInt32() const);
1992 
1997  V8_DEPRECATE_SOON("Use maybe version", Local<Uint32> ToArrayIndex() const);
1999  Local<Context> context) const;
2000 
2001  V8_WARN_UNUSED_RESULT Maybe<bool> BooleanValue(Local<Context> context) const;
2002  V8_WARN_UNUSED_RESULT Maybe<double> NumberValue(Local<Context> context) const;
2004  Local<Context> context) const;
2006  Local<Context> context) const;
2007  V8_WARN_UNUSED_RESULT Maybe<int32_t> Int32Value(Local<Context> context) const;
2008 
2009  V8_DEPRECATE_SOON("Use maybe version", bool BooleanValue() const);
2010  V8_DEPRECATE_SOON("Use maybe version", double NumberValue() const);
2011  V8_DEPRECATE_SOON("Use maybe version", int64_t IntegerValue() const);
2012  V8_DEPRECATE_SOON("Use maybe version", uint32_t Uint32Value() const);
2013  V8_DEPRECATE_SOON("Use maybe version", int32_t Int32Value() const);
2014 
2016  V8_DEPRECATE_SOON("Use maybe version", bool Equals(Local<Value> that) const);
2018  Local<Value> that) const;
2019  bool StrictEquals(Local<Value> that) const;
2020  bool SameValue(Local<Value> that) const;
2021 
2022  template <class T> V8_INLINE static Value* Cast(T* value);
2023 
2024  private:
2025  V8_INLINE bool QuickIsUndefined() const;
2026  V8_INLINE bool QuickIsNull() const;
2027  V8_INLINE bool QuickIsString() const;
2028  bool FullIsUndefined() const;
2029  bool FullIsNull() const;
2030  bool FullIsString() const;
2031 };
2032 
2033 
2037 class V8_EXPORT Primitive : public Value { };
2038 
2039 
2044 class V8_EXPORT Boolean : public Primitive {
2045  public:
2046  bool Value() const;
2047  V8_INLINE static Boolean* Cast(v8::Value* obj);
2048  V8_INLINE static Local<Boolean> New(Isolate* isolate, bool value);
2049 
2050  private:
2051  static void CheckCast(v8::Value* obj);
2052 };
2053 
2054 
2058 class V8_EXPORT Name : public Primitive {
2059  public:
2067  int GetIdentityHash();
2068 
2069  V8_INLINE static Name* Cast(v8::Value* obj);
2070  private:
2071  static void CheckCast(v8::Value* obj);
2072 };
2073 
2074 
2076 
2077 
2081 class V8_EXPORT String : public Name {
2082  public:
2083  static const int kMaxLength = (1 << 28) - 16;
2084 
2085  enum Encoding {
2086  UNKNOWN_ENCODING = 0x1,
2087  TWO_BYTE_ENCODING = 0x0,
2088  ONE_BYTE_ENCODING = 0x4
2089  };
2093  int Length() const;
2094 
2099  int Utf8Length() const;
2100 
2106  bool IsOneByte() const;
2107 
2112  bool ContainsOnlyOneByte() const;
2113 
2140  NO_OPTIONS = 0,
2141  HINT_MANY_WRITES_EXPECTED = 1,
2142  NO_NULL_TERMINATION = 2,
2143  PRESERVE_ONE_BYTE_NULL = 4,
2144  // Used by WriteUtf8 to replace orphan surrogate code units with the
2145  // unicode replacement character. Needs to be set to guarantee valid UTF-8
2146  // output.
2147  REPLACE_INVALID_UTF8 = 8
2148  };
2149 
2150  // 16-bit character codes.
2151  int Write(uint16_t* buffer,
2152  int start = 0,
2153  int length = -1,
2154  int options = NO_OPTIONS) const;
2155  // One byte characters.
2156  int WriteOneByte(uint8_t* buffer,
2157  int start = 0,
2158  int length = -1,
2159  int options = NO_OPTIONS) const;
2160  // UTF-8 encoded characters.
2161  int WriteUtf8(char* buffer,
2162  int length = -1,
2163  int* nchars_ref = NULL,
2164  int options = NO_OPTIONS) const;
2165 
2169  V8_INLINE static v8::Local<v8::String> Empty(Isolate* isolate);
2170 
2174  bool IsExternal() const;
2175 
2179  bool IsExternalOneByte() const;
2180 
2182  public:
2184 
2185  protected:
2187 
2194  virtual void Dispose() { delete this; }
2195 
2196  private:
2197  // Disallow copying and assigning.
2199  void operator=(const ExternalStringResourceBase&);
2200 
2201  friend class v8::internal::Heap;
2202  };
2203 
2211  : public ExternalStringResourceBase {
2212  public:
2218 
2222  virtual const uint16_t* data() const = 0;
2223 
2227  virtual size_t length() const = 0;
2228 
2229  protected:
2231  };
2232 
2244  : public ExternalStringResourceBase {
2245  public:
2252  virtual const char* data() const = 0;
2254  virtual size_t length() const = 0;
2255  protected:
2257  };
2258 
2264  V8_INLINE ExternalStringResourceBase* GetExternalStringResourceBase(
2265  Encoding* encoding_out) const;
2266 
2271  V8_INLINE ExternalStringResource* GetExternalStringResource() const;
2272 
2277  const ExternalOneByteStringResource* GetExternalOneByteStringResource() const;
2278 
2279  V8_INLINE static String* Cast(v8::Value* obj);
2280 
2281  // TODO(dcarney): remove with deprecation of New functions.
2283  kNormalString = static_cast<int>(v8::NewStringType::kNormal),
2284  kInternalizedString = static_cast<int>(v8::NewStringType::kInternalized)
2285  };
2286 
2288  static V8_DEPRECATE_SOON(
2289  "Use maybe version",
2290  Local<String> NewFromUtf8(Isolate* isolate, const char* data,
2291  NewStringType type = kNormalString,
2292  int length = -1));
2293 
2296  static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewFromUtf8(
2297  Isolate* isolate, const char* data, v8::NewStringType type,
2298  int length = -1);
2299 
2301  static V8_DEPRECATE_SOON(
2302  "Use maybe version",
2303  Local<String> NewFromOneByte(Isolate* isolate, const uint8_t* data,
2304  NewStringType type = kNormalString,
2305  int length = -1));
2306 
2309  static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewFromOneByte(
2310  Isolate* isolate, const uint8_t* data, v8::NewStringType type,
2311  int length = -1);
2312 
2314  static V8_DEPRECATE_SOON(
2315  "Use maybe version",
2316  Local<String> NewFromTwoByte(Isolate* isolate, const uint16_t* data,
2317  NewStringType type = kNormalString,
2318  int length = -1));
2319 
2322  static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewFromTwoByte(
2323  Isolate* isolate, const uint16_t* data, v8::NewStringType type,
2324  int length = -1);
2325 
2330  static Local<String> Concat(Local<String> left, Local<String> right);
2331 
2340  static V8_DEPRECATE_SOON(
2341  "Use maybe version",
2342  Local<String> NewExternal(Isolate* isolate,
2343  ExternalStringResource* resource));
2344  static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewExternalTwoByte(
2345  Isolate* isolate, ExternalStringResource* resource);
2346 
2356  bool MakeExternal(ExternalStringResource* resource);
2357 
2366  static V8_DEPRECATE_SOON(
2367  "Use maybe version",
2368  Local<String> NewExternal(Isolate* isolate,
2369  ExternalOneByteStringResource* resource));
2370  static V8_WARN_UNUSED_RESULT MaybeLocal<String> NewExternalOneByte(
2371  Isolate* isolate, ExternalOneByteStringResource* resource);
2372 
2382  bool MakeExternal(ExternalOneByteStringResource* resource);
2383 
2387  bool CanMakeExternal();
2388 
2397  public:
2398  explicit Utf8Value(Local<v8::Value> obj);
2399  ~Utf8Value();
2400  char* operator*() { return str_; }
2401  const char* operator*() const { return str_; }
2402  int length() const { return length_; }
2403  private:
2404  char* str_;
2405  int length_;
2406 
2407  // Disallow copying and assigning.
2408  Utf8Value(const Utf8Value&);
2409  void operator=(const Utf8Value&);
2410  };
2411 
2419  public:
2420  explicit Value(Local<v8::Value> obj);
2421  ~Value();
2422  uint16_t* operator*() { return str_; }
2423  const uint16_t* operator*() const { return str_; }
2424  int length() const { return length_; }
2425  private:
2426  uint16_t* str_;
2427  int length_;
2428 
2429  // Disallow copying and assigning.
2430  Value(const Value&);
2431  void operator=(const Value&);
2432  };
2433 
2434  private:
2435  void VerifyExternalStringResourceBase(ExternalStringResourceBase* v,
2436  Encoding encoding) const;
2437  void VerifyExternalStringResource(ExternalStringResource* val) const;
2438  static void CheckCast(v8::Value* obj);
2439 };
2440 
2441 
2447 class V8_EXPORT Symbol : public Name {
2448  public:
2449  // Returns the print name string of the symbol, or undefined if none.
2450  Local<Value> Name() const;
2451 
2452  // Create a symbol. If name is not empty, it will be used as the description.
2453  static Local<Symbol> New(
2454  Isolate *isolate, Local<String> name = Local<String>());
2455 
2456  // Access global symbol registry.
2457  // Note that symbols created this way are never collected, so
2458  // they should only be used for statically fixed properties.
2459  // Also, there is only one global name space for the names used as keys.
2460  // To minimize the potential for clashes, use qualified names as keys.
2461  static Local<Symbol> For(Isolate *isolate, Local<String> name);
2462 
2463  // Retrieve a global symbol. Similar to |For|, but using a separate
2464  // registry that is not accessible by (and cannot clash with) JavaScript code.
2465  static Local<Symbol> ForApi(Isolate *isolate, Local<String> name);
2466 
2467  // Well-known symbols
2468  static Local<Symbol> GetIterator(Isolate* isolate);
2469  static Local<Symbol> GetUnscopables(Isolate* isolate);
2470  static Local<Symbol> GetToStringTag(Isolate* isolate);
2471 
2472  V8_INLINE static Symbol* Cast(v8::Value* obj);
2473 
2474  private:
2475  Symbol();
2476  static void CheckCast(v8::Value* obj);
2477 };
2478 
2479 
2483 class V8_EXPORT Number : public Primitive {
2484  public:
2485  double Value() const;
2486  static Local<Number> New(Isolate* isolate, double value);
2487  V8_INLINE static Number* Cast(v8::Value* obj);
2488  private:
2489  Number();
2490  static void CheckCast(v8::Value* obj);
2491 };
2492 
2493 
2497 class V8_EXPORT Integer : public Number {
2498  public:
2499  static Local<Integer> New(Isolate* isolate, int32_t value);
2500  static Local<Integer> NewFromUnsigned(Isolate* isolate, uint32_t value);
2501  int64_t Value() const;
2502  V8_INLINE static Integer* Cast(v8::Value* obj);
2503  private:
2504  Integer();
2505  static void CheckCast(v8::Value* obj);
2506 };
2507 
2508 
2512 class V8_EXPORT Int32 : public Integer {
2513  public:
2514  int32_t Value() const;
2515  V8_INLINE static Int32* Cast(v8::Value* obj);
2516 
2517  private:
2518  Int32();
2519  static void CheckCast(v8::Value* obj);
2520 };
2521 
2522 
2526 class V8_EXPORT Uint32 : public Integer {
2527  public:
2528  uint32_t Value() const;
2529  V8_INLINE static Uint32* Cast(v8::Value* obj);
2530 
2531  private:
2532  Uint32();
2533  static void CheckCast(v8::Value* obj);
2534 };
2535 
2536 
2538  None = 0,
2539  ReadOnly = 1 << 0,
2540  DontEnum = 1 << 1,
2541  DontDelete = 1 << 2
2542 };
2543 
2549 typedef void (*AccessorGetterCallback)(
2550  Local<String> property,
2551  const PropertyCallbackInfo<Value>& info);
2553  Local<Name> property,
2554  const PropertyCallbackInfo<Value>& info);
2555 
2556 
2557 typedef void (*AccessorSetterCallback)(
2558  Local<String> property,
2559  Local<Value> value,
2560  const PropertyCallbackInfo<void>& info);
2562  Local<Name> property,
2563  Local<Value> value,
2564  const PropertyCallbackInfo<void>& info);
2565 
2566 
2577  DEFAULT = 0,
2579  ALL_CAN_WRITE = 1 << 1,
2581 };
2582 
2583 
2587 class V8_EXPORT Object : public Value {
2588  public:
2589  V8_DEPRECATE_SOON("Use maybe version",
2590  bool Set(Local<Value> key, Local<Value> value));
2592  Local<Value> key, Local<Value> value);
2593 
2594  V8_DEPRECATE_SOON("Use maybe version",
2595  bool Set(uint32_t index, Local<Value> value));
2596  V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context, uint32_t index,
2597  Local<Value> value);
2598 
2599  // Implements CreateDataProperty (ECMA-262, 7.3.4).
2600  //
2601  // Defines a configurable, writable, enumerable property with the given value
2602  // on the object unless the property already exists and is not configurable
2603  // or the object is not extensible.
2604  //
2605  // Returns true on success.
2606  V8_WARN_UNUSED_RESULT Maybe<bool> CreateDataProperty(Local<Context> context,
2607  Local<Name> key,
2608  Local<Value> value);
2609  V8_WARN_UNUSED_RESULT Maybe<bool> CreateDataProperty(Local<Context> context,
2610  uint32_t index,
2611  Local<Value> value);
2612 
2613  // Implements DefineOwnProperty.
2614  //
2615  // In general, CreateDataProperty will be faster, however, does not allow
2616  // for specifying attributes.
2617  //
2618  // Returns true on success.
2619  V8_WARN_UNUSED_RESULT Maybe<bool> DefineOwnProperty(
2620  Local<Context> context, Local<Name> key, Local<Value> value,
2621  PropertyAttribute attributes = None);
2622 
2623  // Sets an own property on this object bypassing interceptors and
2624  // overriding accessors or read-only properties.
2625  //
2626  // Note that if the object has an interceptor the property will be set
2627  // locally, but since the interceptor takes precedence the local property
2628  // will only be returned if the interceptor doesn't return a value.
2629  //
2630  // Note also that this only works for named properties.
2631  V8_DEPRECATE_SOON("Use CreateDataProperty",
2632  bool ForceSet(Local<Value> key, Local<Value> value,
2633  PropertyAttribute attribs = None));
2634  V8_DEPRECATE_SOON("Use CreateDataProperty",
2635  Maybe<bool> ForceSet(Local<Context> context,
2636  Local<Value> key, Local<Value> value,
2637  PropertyAttribute attribs = None));
2638 
2639  V8_DEPRECATE_SOON("Use maybe version", Local<Value> Get(Local<Value> key));
2641  Local<Value> key);
2642 
2643  V8_DEPRECATE_SOON("Use maybe version", Local<Value> Get(uint32_t index));
2645  uint32_t index);
2646 
2652  V8_DEPRECATE_SOON("Use maybe version",
2653  PropertyAttribute GetPropertyAttributes(Local<Value> key));
2654  V8_WARN_UNUSED_RESULT Maybe<PropertyAttribute> GetPropertyAttributes(
2655  Local<Context> context, Local<Value> key);
2656 
2660  V8_DEPRECATE_SOON("Use maybe version",
2661  Local<Value> GetOwnPropertyDescriptor(Local<String> key));
2662  V8_WARN_UNUSED_RESULT MaybeLocal<Value> GetOwnPropertyDescriptor(
2663  Local<Context> context, Local<String> key);
2664 
2665  V8_DEPRECATE_SOON("Use maybe version", bool Has(Local<Value> key));
2667  Local<Value> key);
2668 
2669  V8_DEPRECATE_SOON("Use maybe version", bool Delete(Local<Value> key));
2670  // TODO(dcarney): mark V8_WARN_UNUSED_RESULT
2671  Maybe<bool> Delete(Local<Context> context, Local<Value> key);
2672 
2673  V8_DEPRECATE_SOON("Use maybe version", bool Has(uint32_t index));
2674  V8_WARN_UNUSED_RESULT Maybe<bool> Has(Local<Context> context, uint32_t index);
2675 
2676  V8_DEPRECATE_SOON("Use maybe version", bool Delete(uint32_t index));
2677  // TODO(dcarney): mark V8_WARN_UNUSED_RESULT
2678  Maybe<bool> Delete(Local<Context> context, uint32_t index);
2679 
2680  V8_DEPRECATE_SOON("Use maybe version",
2681  bool SetAccessor(Local<String> name,
2682  AccessorGetterCallback getter,
2683  AccessorSetterCallback setter = 0,
2684  Local<Value> data = Local<Value>(),
2685  AccessControl settings = DEFAULT,
2686  PropertyAttribute attribute = None));
2687  V8_DEPRECATE_SOON("Use maybe version",
2688  bool SetAccessor(Local<Name> name,
2690  AccessorNameSetterCallback setter = 0,
2691  Local<Value> data = Local<Value>(),
2692  AccessControl settings = DEFAULT,
2693  PropertyAttribute attribute = None));
2694  // TODO(dcarney): mark V8_WARN_UNUSED_RESULT
2695  Maybe<bool> SetAccessor(Local<Context> context, Local<Name> name,
2697  AccessorNameSetterCallback setter = 0,
2699  AccessControl settings = DEFAULT,
2700  PropertyAttribute attribute = None);
2701 
2702  void SetAccessorProperty(Local<Name> name, Local<Function> getter,
2703  Local<Function> setter = Local<Function>(),
2704  PropertyAttribute attribute = None,
2705  AccessControl settings = DEFAULT);
2706 
2713  V8_DEPRECATE_SOON("Use maybe version", Local<Array> GetPropertyNames());
2714  V8_WARN_UNUSED_RESULT MaybeLocal<Array> GetPropertyNames(
2715  Local<Context> context);
2716 
2722  V8_DEPRECATE_SOON("Use maybe version", Local<Array> GetOwnPropertyNames());
2723  V8_WARN_UNUSED_RESULT MaybeLocal<Array> GetOwnPropertyNames(
2724  Local<Context> context);
2725 
2731  Local<Value> GetPrototype();
2732 
2738  V8_DEPRECATE_SOON("Use maybe version",
2739  bool SetPrototype(Local<Value> prototype));
2740  V8_WARN_UNUSED_RESULT Maybe<bool> SetPrototype(Local<Context> context,
2741  Local<Value> prototype);
2742 
2747  Local<Object> FindInstanceInPrototypeChain(Local<FunctionTemplate> tmpl);
2748 
2754  V8_DEPRECATE_SOON("Use maybe version", Local<String> ObjectProtoToString());
2755  V8_WARN_UNUSED_RESULT MaybeLocal<String> ObjectProtoToString(
2756  Local<Context> context);
2757 
2761  Local<String> GetConstructorName();
2762 
2764  int InternalFieldCount();
2765 
2768  const PersistentBase<Object>& object) {
2769  return object.val_->InternalFieldCount();
2770  }
2771 
2773  V8_INLINE Local<Value> GetInternalField(int index);
2774 
2776  void SetInternalField(int index, Local<Value> value);
2777 
2783  V8_INLINE void* GetAlignedPointerFromInternalField(int index);
2784 
2787  const PersistentBase<Object>& object, int index) {
2788  return object.val_->GetAlignedPointerFromInternalField(index);
2789  }
2790 
2796  void SetAlignedPointerInInternalField(int index, void* value);
2797 
2798  // Testers for local properties.
2799  V8_DEPRECATE_SOON("Use maybe version",
2800  bool HasOwnProperty(Local<String> key));
2801  V8_WARN_UNUSED_RESULT Maybe<bool> HasOwnProperty(Local<Context> context,
2802  Local<Name> key);
2803  V8_DEPRECATE_SOON("Use maybe version",
2804  bool HasRealNamedProperty(Local<String> key));
2805  V8_WARN_UNUSED_RESULT Maybe<bool> HasRealNamedProperty(Local<Context> context,
2806  Local<Name> key);
2807  V8_DEPRECATE_SOON("Use maybe version",
2808  bool HasRealIndexedProperty(uint32_t index));
2809  V8_WARN_UNUSED_RESULT Maybe<bool> HasRealIndexedProperty(
2810  Local<Context> context, uint32_t index);
2811  V8_DEPRECATE_SOON("Use maybe version",
2812  bool HasRealNamedCallbackProperty(Local<String> key));
2813  V8_WARN_UNUSED_RESULT Maybe<bool> HasRealNamedCallbackProperty(
2814  Local<Context> context, Local<Name> key);
2815 
2821  "Use maybe version",
2822  Local<Value> GetRealNamedPropertyInPrototypeChain(Local<String> key));
2823  V8_WARN_UNUSED_RESULT MaybeLocal<Value> GetRealNamedPropertyInPrototypeChain(
2824  Local<Context> context, Local<Name> key);
2825 
2832  "Use maybe version",
2833  Maybe<PropertyAttribute> GetRealNamedPropertyAttributesInPrototypeChain(
2834  Local<String> key));
2836  GetRealNamedPropertyAttributesInPrototypeChain(Local<Context> context,
2837  Local<Name> key);
2838 
2844  V8_DEPRECATE_SOON("Use maybe version",
2845  Local<Value> GetRealNamedProperty(Local<String> key));
2846  V8_WARN_UNUSED_RESULT MaybeLocal<Value> GetRealNamedProperty(
2847  Local<Context> context, Local<Name> key);
2848 
2854  V8_DEPRECATE_SOON("Use maybe version",
2855  Maybe<PropertyAttribute> GetRealNamedPropertyAttributes(
2856  Local<String> key));
2857  V8_WARN_UNUSED_RESULT Maybe<PropertyAttribute> GetRealNamedPropertyAttributes(
2858  Local<Context> context, Local<Name> key);
2859 
2861  bool HasNamedLookupInterceptor();
2862 
2864  bool HasIndexedLookupInterceptor();
2865 
2873  int GetIdentityHash();
2874 
2881  // TODO(dcarney): convert these to take a isolate and optionally bailout?
2882  bool SetHiddenValue(Local<String> key, Local<Value> value);
2883  Local<Value> GetHiddenValue(Local<String> key);
2884  bool DeleteHiddenValue(Local<String> key);
2885 
2890  // TODO(dcarney): take an isolate and optionally bail out?
2891  Local<Object> Clone();
2892 
2896  Local<Context> CreationContext();
2897 
2903  bool IsCallable();
2904 
2909  V8_DEPRECATE_SOON("Use maybe version",
2910  Local<Value> CallAsFunction(Local<Value> recv, int argc,
2911  Local<Value> argv[]));
2913  Local<Value> recv,
2914  int argc,
2915  Local<Value> argv[]);
2916 
2922  V8_DEPRECATE_SOON("Use maybe version",
2923  Local<Value> CallAsConstructor(int argc,
2924  Local<Value> argv[]));
2925  V8_WARN_UNUSED_RESULT MaybeLocal<Value> CallAsConstructor(
2926  Local<Context> context, int argc, Local<Value> argv[]);
2927 
2931  V8_DEPRECATE_SOON("Keep track of isolate correctly", Isolate* GetIsolate());
2932 
2933  static Local<Object> New(Isolate* isolate);
2934 
2935  V8_INLINE static Object* Cast(Value* obj);
2936 
2937  private:
2938  Object();
2939  static void CheckCast(Value* obj);
2940  Local<Value> SlowGetInternalField(int index);
2941  void* SlowGetAlignedPointerFromInternalField(int index);
2942 };
2943 
2944 
2948 class V8_EXPORT Array : public Object {
2949  public:
2950  uint32_t Length() const;
2951 
2956  V8_DEPRECATE_SOON("Use maybe version",
2957  Local<Object> CloneElementAt(uint32_t index));
2959  Local<Context> context, uint32_t index);
2960 
2965  static Local<Array> New(Isolate* isolate, int length = 0);
2966 
2967  V8_INLINE static Array* Cast(Value* obj);
2968  private:
2969  Array();
2970  static void CheckCast(Value* obj);
2971 };
2972 
2973 
2977 class V8_EXPORT Map : public Object {
2978  public:
2979  size_t Size() const;
2980  void Clear();
2982  Local<Value> key);
2984  Local<Value> key,
2985  Local<Value> value);
2987  Local<Value> key);
2989  Local<Value> key);
2990 
2995  Local<Array> AsArray() const;
2996 
3000  static Local<Map> New(Isolate* isolate);
3001 
3007  static V8_WARN_UNUSED_RESULT MaybeLocal<Map> FromArray(Local<Context> context,
3008  Local<Array> array);
3009 
3010  V8_INLINE static Map* Cast(Value* obj);
3011 
3012  private:
3013  Map();
3014  static void CheckCast(Value* obj);
3015 };
3016 
3017 
3021 class V8_EXPORT Set : public Object {
3022  public:
3023  size_t Size() const;
3024  void Clear();
3026  Local<Value> key);
3028  Local<Value> key);
3030  Local<Value> key);
3031 
3035  Local<Array> AsArray() const;
3036 
3040  static Local<Set> New(Isolate* isolate);
3041 
3046  static V8_WARN_UNUSED_RESULT MaybeLocal<Set> FromArray(Local<Context> context,
3047  Local<Array> array);
3048 
3049  V8_INLINE static Set* Cast(Value* obj);
3050 
3051  private:
3052  Set();
3053  static void CheckCast(Value* obj);
3054 };
3055 
3056 
3057 template<typename T>
3058 class ReturnValue {
3059  public:
3060  template <class S> V8_INLINE ReturnValue(const ReturnValue<S>& that)
3061  : value_(that.value_) {
3062  TYPE_CHECK(T, S);
3063  }
3064  // Local setters
3065  template <typename S>
3066  V8_INLINE V8_DEPRECATE_SOON("Use Global<> instead",
3067  void Set(const Persistent<S>& handle));
3068  template <typename S>
3069  V8_INLINE void Set(const Global<S>& handle);
3070  template <typename S>
3071  V8_INLINE void Set(const Local<S> handle);
3072  // Fast primitive setters
3073  V8_INLINE void Set(bool value);
3074  V8_INLINE void Set(double i);
3075  V8_INLINE void Set(int32_t i);
3076  V8_INLINE void Set(uint32_t i);
3077  // Fast JS primitive setters
3078  V8_INLINE void SetNull();
3079  V8_INLINE void SetUndefined();
3080  V8_INLINE void SetEmptyString();
3081  // Convenience getter for Isolate
3083 
3084  // Pointer setter: Uncompilable to prevent inadvertent misuse.
3085  template <typename S>
3086  V8_INLINE void Set(S* whatever);
3087 
3088  private:
3089  template<class F> friend class ReturnValue;
3090  template<class F> friend class FunctionCallbackInfo;
3091  template<class F> friend class PropertyCallbackInfo;
3092  template <class F, class G, class H>
3094  V8_INLINE void SetInternal(internal::Object* value) { *value_ = value; }
3095  V8_INLINE internal::Object* GetDefaultValue();
3096  V8_INLINE explicit ReturnValue(internal::Object** slot);
3097  internal::Object** value_;
3098 };
3099 
3100 
3107 template<typename T>
3108 class FunctionCallbackInfo {
3109  public:
3110  V8_INLINE int Length() const;
3111  V8_INLINE Local<Value> operator[](int i) const;
3112  V8_INLINE Local<Function> Callee() const;
3113  V8_INLINE Local<Object> This() const;
3114  V8_INLINE Local<Object> Holder() const;
3115  V8_INLINE bool IsConstructCall() const;
3116  V8_INLINE Local<Value> Data() const;
3117  V8_INLINE Isolate* GetIsolate() const;
3118  V8_INLINE ReturnValue<T> GetReturnValue() const;
3119  // This shouldn't be public, but the arm compiler needs it.
3120  static const int kArgsLength = 7;
3121 
3122  protected:
3125  static const int kHolderIndex = 0;
3126  static const int kIsolateIndex = 1;
3127  static const int kReturnValueDefaultValueIndex = 2;
3128  static const int kReturnValueIndex = 3;
3129  static const int kDataIndex = 4;
3130  static const int kCalleeIndex = 5;
3131  static const int kContextSaveIndex = 6;
3132 
3133  V8_INLINE FunctionCallbackInfo(internal::Object** implicit_args,
3134  internal::Object** values,
3135  int length,
3136  bool is_construct_call);
3137  internal::Object** implicit_args_;
3138  internal::Object** values_;
3139  int length_;
3141 };
3142 
3143 
3148 template<typename T>
3149 class PropertyCallbackInfo {
3150  public:
3151  V8_INLINE Isolate* GetIsolate() const;
3152  V8_INLINE Local<Value> Data() const;
3153  V8_INLINE Local<Object> This() const;
3154  V8_INLINE Local<Object> Holder() const;
3156  // This shouldn't be public, but the arm compiler needs it.
3157  static const int kArgsLength = 6;
3158 
3159  protected:
3160  friend class MacroAssembler;
3161  friend class internal::PropertyCallbackArguments;
3163  static const int kHolderIndex = 0;
3164  static const int kIsolateIndex = 1;
3165  static const int kReturnValueDefaultValueIndex = 2;
3166  static const int kReturnValueIndex = 3;
3167  static const int kDataIndex = 4;
3168  static const int kThisIndex = 5;
3169 
3170  V8_INLINE PropertyCallbackInfo(internal::Object** args) : args_(args) {}
3171  internal::Object** args_;
3172 };
3173 
3174 
3175 typedef void (*FunctionCallback)(const FunctionCallbackInfo<Value>& info);
3176 
3177 
3181 class V8_EXPORT Function : public Object {
3182  public:
3187  static MaybeLocal<Function> New(Local<Context> context,
3188  FunctionCallback callback,
3189  Local<Value> data = Local<Value>(),
3190  int length = 0);
3191  static V8_DEPRECATE_SOON(
3192  "Use maybe version",
3193  Local<Function> New(Isolate* isolate, FunctionCallback callback,
3194  Local<Value> data = Local<Value>(), int length = 0));
3195 
3196  V8_DEPRECATE_SOON("Use maybe version",
3197  Local<Object> NewInstance(int argc, Local<Value> argv[])
3198  const);
3200  Local<Context> context, int argc, Local<Value> argv[]) const;
3201 
3202  V8_DEPRECATE_SOON("Use maybe version", Local<Object> NewInstance() const);
3204  Local<Context> context) const {
3205  return NewInstance(context, 0, nullptr);
3206  }
3207 
3208  V8_DEPRECATE_SOON("Use maybe version",
3209  Local<Value> Call(Local<Value> recv, int argc,
3210  Local<Value> argv[]));
3212  Local<Value> recv, int argc,
3213  Local<Value> argv[]);
3214 
3215  void SetName(Local<String> name);
3216  Local<Value> GetName() const;
3217 
3224  Local<Value> GetInferredName() const;
3225 
3230  Local<Value> GetDisplayName() const;
3231 
3236  int GetScriptLineNumber() const;
3241  int GetScriptColumnNumber() const;
3242 
3246  bool IsBuiltin() const;
3247 
3251  int ScriptId() const;
3252 
3257  Local<Value> GetBoundFunction() const;
3258 
3259  ScriptOrigin GetScriptOrigin() const;
3260  V8_INLINE static Function* Cast(Value* obj);
3261  static const int kLineOffsetNotFound;
3262 
3263  private:
3264  Function();
3265  static void CheckCast(Value* obj);
3266 };
3267 
3268 
3273 class V8_EXPORT Promise : public Object {
3274  public:
3275  class V8_EXPORT Resolver : public Object {
3276  public:
3280  static V8_DEPRECATE_SOON("Use maybe version",
3281  Local<Resolver> New(Isolate* isolate));
3283  Local<Context> context);
3284 
3288  Local<Promise> GetPromise();
3289 
3294  V8_DEPRECATE_SOON("Use maybe version", void Resolve(Local<Value> value));
3295  // TODO(dcarney): mark V8_WARN_UNUSED_RESULT
3296  Maybe<bool> Resolve(Local<Context> context, Local<Value> value);
3297 
3298  V8_DEPRECATE_SOON("Use maybe version", void Reject(Local<Value> value));
3299  // TODO(dcarney): mark V8_WARN_UNUSED_RESULT
3300  Maybe<bool> Reject(Local<Context> context, Local<Value> value);
3301 
3302  V8_INLINE static Resolver* Cast(Value* obj);
3303 
3304  private:
3305  Resolver();
3306  static void CheckCast(Value* obj);
3307  };
3308 
3315  V8_DEPRECATE_SOON("Use maybe version",
3316  Local<Promise> Chain(Local<Function> handler));
3318  Local<Function> handler);
3319 
3320  V8_DEPRECATE_SOON("Use maybe version",
3321  Local<Promise> Catch(Local<Function> handler));
3323  Local<Function> handler);
3324 
3325  V8_DEPRECATE_SOON("Use maybe version",
3326  Local<Promise> Then(Local<Function> handler));
3328  Local<Function> handler);
3329 
3334  bool HasHandler();
3335 
3336  V8_INLINE static Promise* Cast(Value* obj);
3337 
3338  private:
3339  Promise();
3340  static void CheckCast(Value* obj);
3341 };
3342 
3343 
3344 #ifndef V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT
3345 // The number of required internal fields can be defined by embedder.
3346 #define V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT 2
3347 #endif
3348 
3349 
3351 
3352 
3357 class V8_EXPORT ArrayBuffer : public Object {
3358  public:
3366  class V8_EXPORT Allocator { // NOLINT
3367  public:
3368  virtual ~Allocator() {}
3369 
3374  virtual void* Allocate(size_t length) = 0;
3375 
3380  virtual void* AllocateUninitialized(size_t length) = 0;
3385  virtual void Free(void* data, size_t length) = 0;
3386  };
3387 
3398  class V8_EXPORT Contents { // NOLINT
3399  public:
3400  Contents() : data_(NULL), byte_length_(0) {}
3401 
3402  void* Data() const { return data_; }
3403  size_t ByteLength() const { return byte_length_; }
3404 
3405  private:
3406  void* data_;
3407  size_t byte_length_;
3408 
3409  friend class ArrayBuffer;
3410  };
3411 
3412 
3416  size_t ByteLength() const;
3417 
3424  static Local<ArrayBuffer> New(Isolate* isolate, size_t byte_length);
3425 
3432  static Local<ArrayBuffer> New(
3433  Isolate* isolate, void* data, size_t byte_length,
3435 
3440  bool IsExternal() const;
3441 
3445  bool IsNeuterable() const;
3446 
3453  void Neuter();
3454 
3464  Contents Externalize();
3465 
3476  Contents GetContents();
3477 
3478  V8_INLINE static ArrayBuffer* Cast(Value* obj);
3479 
3480  static const int kInternalFieldCount = V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT;
3481 
3482  private:
3483  ArrayBuffer();
3484  static void CheckCast(Value* obj);
3485 };
3486 
3487 
3488 #ifndef V8_ARRAY_BUFFER_VIEW_INTERNAL_FIELD_COUNT
3489 // The number of required internal fields can be defined by embedder.
3490 #define V8_ARRAY_BUFFER_VIEW_INTERNAL_FIELD_COUNT 2
3491 #endif
3492 
3493 
3501  public:
3505  Local<ArrayBuffer> Buffer();
3509  size_t ByteOffset();
3513  size_t ByteLength();
3514 
3524  size_t CopyContents(void* dest, size_t byte_length);
3525 
3530  bool HasBuffer() const;
3531 
3532  V8_INLINE static ArrayBufferView* Cast(Value* obj);
3533 
3534  static const int kInternalFieldCount =
3536 
3537  private:
3538  ArrayBufferView();
3539  static void CheckCast(Value* obj);
3540 };
3541 
3542 
3549  public:
3554  size_t Length();
3555 
3556  V8_INLINE static TypedArray* Cast(Value* obj);
3557 
3558  private:
3559  TypedArray();
3560  static void CheckCast(Value* obj);
3561 };
3562 
3563 
3569  public:
3570  static Local<Uint8Array> New(Local<ArrayBuffer> array_buffer,
3571  size_t byte_offset, size_t length);
3572  static Local<Uint8Array> New(Local<SharedArrayBuffer> shared_array_buffer,
3573  size_t byte_offset, size_t length);
3574  V8_INLINE static Uint8Array* Cast(Value* obj);
3575 
3576  private:
3577  Uint8Array();
3578  static void CheckCast(Value* obj);
3579 };
3580 
3581 
3587  public:
3588  static Local<Uint8ClampedArray> New(Local<ArrayBuffer> array_buffer,
3589  size_t byte_offset, size_t length);
3590  static Local<Uint8ClampedArray> New(
3591  Local<SharedArrayBuffer> shared_array_buffer, size_t byte_offset,
3592  size_t length);
3593  V8_INLINE static Uint8ClampedArray* Cast(Value* obj);
3594 
3595  private:
3597  static void CheckCast(Value* obj);
3598 };
3599 
3605  public:
3606  static Local<Int8Array> New(Local<ArrayBuffer> array_buffer,
3607  size_t byte_offset, size_t length);
3608  static Local<Int8Array> New(Local<SharedArrayBuffer> shared_array_buffer,
3609  size_t byte_offset, size_t length);
3610  V8_INLINE static Int8Array* Cast(Value* obj);
3611 
3612  private:
3613  Int8Array();
3614  static void CheckCast(Value* obj);
3615 };
3616 
3617 
3623  public:
3624  static Local<Uint16Array> New(Local<ArrayBuffer> array_buffer,
3625  size_t byte_offset, size_t length);
3626  static Local<Uint16Array> New(Local<SharedArrayBuffer> shared_array_buffer,
3627  size_t byte_offset, size_t length);
3628  V8_INLINE static Uint16Array* Cast(Value* obj);
3629 
3630  private:
3631  Uint16Array();
3632  static void CheckCast(Value* obj);
3633 };
3634 
3635 
3641  public:
3642  static Local<Int16Array> New(Local<ArrayBuffer> array_buffer,
3643  size_t byte_offset, size_t length);
3644  static Local<Int16Array> New(Local<SharedArrayBuffer> shared_array_buffer,
3645  size_t byte_offset, size_t length);
3646  V8_INLINE static Int16Array* Cast(Value* obj);
3647 
3648  private:
3649  Int16Array();
3650  static void CheckCast(Value* obj);
3651 };
3652 
3653 
3659  public:
3660  static Local<Uint32Array> New(Local<ArrayBuffer> array_buffer,
3661  size_t byte_offset, size_t length);
3662  static Local<Uint32Array> New(Local<SharedArrayBuffer> shared_array_buffer,
3663  size_t byte_offset, size_t length);
3664  V8_INLINE static Uint32Array* Cast(Value* obj);
3665 
3666  private:
3667  Uint32Array();
3668  static void CheckCast(Value* obj);
3669 };
3670 
3671 
3677  public:
3678  static Local<Int32Array> New(Local<ArrayBuffer> array_buffer,
3679  size_t byte_offset, size_t length);
3680  static Local<Int32Array> New(Local<SharedArrayBuffer> shared_array_buffer,
3681  size_t byte_offset, size_t length);
3682  V8_INLINE static Int32Array* Cast(Value* obj);
3683 
3684  private:
3685  Int32Array();
3686  static void CheckCast(Value* obj);
3687 };
3688 
3689 
3695  public:
3696  static Local<Float32Array> New(Local<ArrayBuffer> array_buffer,
3697  size_t byte_offset, size_t length);
3698  static Local<Float32Array> New(Local<SharedArrayBuffer> shared_array_buffer,
3699  size_t byte_offset, size_t length);
3700  V8_INLINE static Float32Array* Cast(Value* obj);
3701 
3702  private:
3703  Float32Array();
3704  static void CheckCast(Value* obj);
3705 };
3706 
3707 
3713  public:
3714  static Local<Float64Array> New(Local<ArrayBuffer> array_buffer,
3715  size_t byte_offset, size_t length);
3716  static Local<Float64Array> New(Local<SharedArrayBuffer> shared_array_buffer,
3717  size_t byte_offset, size_t length);
3718  V8_INLINE static Float64Array* Cast(Value* obj);
3719 
3720  private:
3721  Float64Array();
3722  static void CheckCast(Value* obj);
3723 };
3724 
3725 
3731  public:
3732  static Local<DataView> New(Local<ArrayBuffer> array_buffer,
3733  size_t byte_offset, size_t length);
3734  static Local<DataView> New(Local<SharedArrayBuffer> shared_array_buffer,
3735  size_t byte_offset, size_t length);
3736  V8_INLINE static DataView* Cast(Value* obj);
3737 
3738  private:
3739  DataView();
3740  static void CheckCast(Value* obj);
3741 };
3742 
3743 
3749  public:
3761  class V8_EXPORT Contents { // NOLINT
3762  public:
3763  Contents() : data_(NULL), byte_length_(0) {}
3764 
3765  void* Data() const { return data_; }
3766  size_t ByteLength() const { return byte_length_; }
3767 
3768  private:
3769  void* data_;
3770  size_t byte_length_;
3771 
3772  friend class SharedArrayBuffer;
3773  };
3774 
3775 
3779  size_t ByteLength() const;
3780 
3787  static Local<SharedArrayBuffer> New(Isolate* isolate, size_t byte_length);
3788 
3795  static Local<SharedArrayBuffer> New(
3796  Isolate* isolate, void* data, size_t byte_length,
3798 
3803  bool IsExternal() const;
3804 
3817  Contents Externalize();
3818 
3831  Contents GetContents();
3832 
3833  V8_INLINE static SharedArrayBuffer* Cast(Value* obj);
3834 
3835  static const int kInternalFieldCount = V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT;
3836 
3837  private:
3839  static void CheckCast(Value* obj);
3840 };
3841 
3842 
3846 class V8_EXPORT Date : public Object {
3847  public:
3848  static V8_DEPRECATE_SOON("Use maybe version.",
3849  Local<Value> New(Isolate* isolate, double time));
3851  double time);
3852 
3857  double ValueOf() const;
3858 
3859  V8_INLINE static Date* Cast(v8::Value* obj);
3860 
3873  static void DateTimeConfigurationChangeNotification(Isolate* isolate);
3874 
3875  private:
3876  static void CheckCast(v8::Value* obj);
3877 };
3878 
3879 
3884  public:
3885  static Local<Value> New(Isolate* isolate, double value);
3886 
3887  double ValueOf() const;
3888 
3889  V8_INLINE static NumberObject* Cast(v8::Value* obj);
3890 
3891  private:
3892  static void CheckCast(v8::Value* obj);
3893 };
3894 
3895 
3900  public:
3901  static Local<Value> New(bool value);
3902 
3903  bool ValueOf() const;
3904 
3905  V8_INLINE static BooleanObject* Cast(v8::Value* obj);
3906 
3907  private:
3908  static void CheckCast(v8::Value* obj);
3909 };
3910 
3911 
3916  public:
3917  static Local<Value> New(Local<String> value);
3918 
3919  Local<String> ValueOf() const;
3920 
3921  V8_INLINE static StringObject* Cast(v8::Value* obj);
3922 
3923  private:
3924  static void CheckCast(v8::Value* obj);
3925 };
3926 
3927 
3934  public:
3935  static Local<Value> New(Isolate* isolate, Local<Symbol> value);
3936 
3937  Local<Symbol> ValueOf() const;
3938 
3939  V8_INLINE static SymbolObject* Cast(v8::Value* obj);
3940 
3941  private:
3942  static void CheckCast(v8::Value* obj);
3943 };
3944 
3945 
3949 class V8_EXPORT RegExp : public Object {
3950  public:
3955  enum Flags {
3956  kNone = 0,
3957  kGlobal = 1,
3958  kIgnoreCase = 2,
3959  kMultiline = 4
3960  };
3961 
3972  static V8_DEPRECATE_SOON("Use maybe version",
3973  Local<RegExp> New(Local<String> pattern,
3974  Flags flags));
3976  Local<String> pattern,
3977  Flags flags);
3978 
3983  Local<String> GetSource() const;
3984 
3988  Flags GetFlags() const;
3989 
3990  V8_INLINE static RegExp* Cast(v8::Value* obj);
3991 
3992  private:
3993  static void CheckCast(v8::Value* obj);
3994 };
3995 
3996 
4001 class V8_EXPORT External : public Value {
4002  public:
4003  static Local<External> New(Isolate* isolate, void* value);
4004  V8_INLINE static External* Cast(Value* obj);
4005  void* Value() const;
4006  private:
4007  static void CheckCast(v8::Value* obj);
4008 };
4009 
4010 
4011 // --- Templates ---
4012 
4013 
4017 class V8_EXPORT Template : public Data {
4018  public:
4020  void Set(Local<Name> name, Local<Data> value,
4021  PropertyAttribute attributes = None);
4022  V8_INLINE void Set(Isolate* isolate, const char* name, Local<Data> value);
4023 
4024  void SetAccessorProperty(
4025  Local<Name> name,
4028  PropertyAttribute attribute = None,
4029  AccessControl settings = DEFAULT);
4030 
4058  void SetNativeDataProperty(
4060  AccessorSetterCallback setter = 0,
4061  // TODO(dcarney): gcc can't handle Local below
4062  Local<Value> data = Local<Value>(), PropertyAttribute attribute = None,
4064  AccessControl settings = DEFAULT);
4065  void SetNativeDataProperty(
4067  AccessorNameSetterCallback setter = 0,
4068  // TODO(dcarney): gcc can't handle Local below
4069  Local<Value> data = Local<Value>(), PropertyAttribute attribute = None,
4071  AccessControl settings = DEFAULT);
4072 
4073  private:
4074  Template();
4075 
4076  friend class ObjectTemplate;
4077  friend class FunctionTemplate;
4078 };
4079 
4080 
4086  Local<String> property,
4087  const PropertyCallbackInfo<Value>& info);
4088 
4089 
4095  Local<String> property,
4096  Local<Value> value,
4097  const PropertyCallbackInfo<Value>& info);
4098 
4099 
4106  Local<String> property,
4107  const PropertyCallbackInfo<Integer>& info);
4108 
4109 
4116  Local<String> property,
4117  const PropertyCallbackInfo<Boolean>& info);
4118 
4119 
4125  const PropertyCallbackInfo<Array>& info);
4126 
4127 
4128 // TODO(dcarney): Deprecate and remove previous typedefs, and replace
4129 // GenericNamedPropertyFooCallback with just NamedPropertyFooCallback.
4135  Local<Name> property, const PropertyCallbackInfo<Value>& info);
4136 
4137 
4143  Local<Name> property, Local<Value> value,
4144  const PropertyCallbackInfo<Value>& info);
4145 
4146 
4153  Local<Name> property, const PropertyCallbackInfo<Integer>& info);
4154 
4155 
4162  Local<Name> property, const PropertyCallbackInfo<Boolean>& info);
4163 
4164 
4170  const PropertyCallbackInfo<Array>& info);
4171 
4172 
4178  uint32_t index,
4179  const PropertyCallbackInfo<Value>& info);
4180 
4181 
4187  uint32_t index,
4188  Local<Value> value,
4189  const PropertyCallbackInfo<Value>& info);
4190 
4191 
4197  uint32_t index,
4198  const PropertyCallbackInfo<Integer>& info);
4199 
4200 
4207  uint32_t index,
4208  const PropertyCallbackInfo<Boolean>& info);
4209 
4210 
4216  const PropertyCallbackInfo<Array>& info);
4217 
4218 
4228 };
4229 
4230 
4236  Local<Value> key,
4237  AccessType type,
4238  Local<Value> data);
4239 
4240 
4246  uint32_t index,
4247  AccessType type,
4248  Local<Value> data);
4249 
4250 
4347  public:
4349  static Local<FunctionTemplate> New(
4350  Isolate* isolate, FunctionCallback callback = 0,
4351  Local<Value> data = Local<Value>(),
4352  Local<Signature> signature = Local<Signature>(), int length = 0);
4353 
4355  V8_DEPRECATE_SOON("Use maybe version", Local<Function> GetFunction());
4357  Local<Context> context);
4358 
4364  void SetCallHandler(FunctionCallback callback,
4365  Local<Value> data = Local<Value>());
4366 
4368  void SetLength(int length);
4369 
4371  Local<ObjectTemplate> InstanceTemplate();
4372 
4374  void Inherit(Local<FunctionTemplate> parent);
4375 
4380  Local<ObjectTemplate> PrototypeTemplate();
4381 
4387  void SetClassName(Local<String> name);
4388 
4389 
4394  void SetAcceptAnyReceiver(bool value);
4395 
4408  void SetHiddenPrototype(bool value);
4409 
4414  void ReadOnlyPrototype();
4415 
4420  void RemovePrototype();
4421 
4426  bool HasInstance(Local<Value> object);
4427 
4428  private:
4429  FunctionTemplate();
4430  friend class Context;
4431  friend class ObjectTemplate;
4432 };
4433 
4434 
4436  kNone = 0,
4437  // See ALL_CAN_READ above.
4438  kAllCanRead = 1,
4439  // Will not call into interceptor for properties on the receiver or prototype
4440  // chain. Currently only valid for named interceptors.
4441  kNonMasking = 1 << 1,
4442  // Will not call into interceptor for symbol lookup. Only meaningful for
4443  // named interceptors.
4444  kOnlyInterceptStrings = 1 << 2,
4445 };
4446 
4447 
4458  : getter(getter),
4459  setter(setter),
4460  query(query),
4461  deleter(deleter),
4463  data(data),
4464  flags(flags) {}
4465 
4473 };
4474 
4475 
4486  : getter(getter),
4487  setter(setter),
4488  query(query),
4489  deleter(deleter),
4491  data(data),
4492  flags(flags) {}
4493 
4501 };
4502 
4503 
4511  public:
4513  static Local<ObjectTemplate> New(
4514  Isolate* isolate,
4516  static V8_DEPRECATE_SOON("Use isolate version", Local<ObjectTemplate> New());
4517 
4519  V8_DEPRECATE_SOON("Use maybe version", Local<Object> NewInstance());
4521 
4551  void SetAccessor(
4553  AccessorSetterCallback setter = 0, Local<Value> data = Local<Value>(),
4554  AccessControl settings = DEFAULT, PropertyAttribute attribute = None,
4556  void SetAccessor(
4559  AccessControl settings = DEFAULT, PropertyAttribute attribute = None,
4561 
4582  // TODO(dcarney): deprecate
4583  void SetNamedPropertyHandler(NamedPropertyGetterCallback getter,
4584  NamedPropertySetterCallback setter = 0,
4585  NamedPropertyQueryCallback query = 0,
4586  NamedPropertyDeleterCallback deleter = 0,
4587  NamedPropertyEnumeratorCallback enumerator = 0,
4588  Local<Value> data = Local<Value>());
4589  void SetHandler(const NamedPropertyHandlerConfiguration& configuration);
4590 
4607  void SetHandler(const IndexedPropertyHandlerConfiguration& configuration);
4608  // TODO(dcarney): deprecate
4611  IndexedPropertySetterCallback setter = 0,
4612  IndexedPropertyQueryCallback query = 0,
4613  IndexedPropertyDeleterCallback deleter = 0,
4614  IndexedPropertyEnumeratorCallback enumerator = 0,
4615  Local<Value> data = Local<Value>()) {
4616  SetHandler(IndexedPropertyHandlerConfiguration(getter, setter, query,
4617  deleter, enumerator, data));
4618  }
4625  void SetCallAsFunctionHandler(FunctionCallback callback,
4626  Local<Value> data = Local<Value>());
4627 
4636  void MarkAsUndetectable();
4637 
4646  void SetAccessCheckCallbacks(NamedSecurityCallback named_handler,
4647  IndexedSecurityCallback indexed_handler,
4648  Local<Value> data = Local<Value>());
4649 
4654  int InternalFieldCount();
4655 
4660  void SetInternalFieldCount(int value);
4661 
4662  private:
4663  ObjectTemplate();
4664  static Local<ObjectTemplate> New(internal::Isolate* isolate,
4665  Local<FunctionTemplate> constructor);
4666  friend class FunctionTemplate;
4667 };
4668 
4669 
4673 class V8_EXPORT Signature : public Data {
4674  public:
4675  static Local<Signature> New(
4676  Isolate* isolate,
4678 
4679  private:
4680  Signature();
4681 };
4682 
4683 
4689  public:
4690  static Local<AccessorSignature> New(
4691  Isolate* isolate,
4693 
4694  private:
4696 };
4697 
4698 
4703 class V8_EXPORT TypeSwitch : public Data {
4704  public:
4705  static Local<TypeSwitch> New(Local<FunctionTemplate> type);
4706  static Local<TypeSwitch> New(int argc, Local<FunctionTemplate> types[]);
4707  int match(Local<Value> value);
4708 
4709  private:
4710  TypeSwitch();
4711 };
4712 
4713 
4714 // --- Extensions ---
4715 
4718  public:
4719  ExternalOneByteStringResourceImpl() : data_(0), length_(0) {}
4720  ExternalOneByteStringResourceImpl(const char* data, size_t length)
4721  : data_(data), length_(length) {}
4722  const char* data() const { return data_; }
4723  size_t length() const { return length_; }
4724 
4725  private:
4726  const char* data_;
4727  size_t length_;
4728 };
4729 
4733 class V8_EXPORT Extension { // NOLINT
4734  public:
4735  // Note that the strings passed into this constructor must live as long
4736  // as the Extension itself.
4737  Extension(const char* name,
4738  const char* source = 0,
4739  int dep_count = 0,
4740  const char** deps = 0,
4741  int source_length = -1);
4742  virtual ~Extension() { }
4744  v8::Isolate* isolate, v8::Local<v8::String> name) {
4746  }
4747 
4748  const char* name() const { return name_; }
4749  size_t source_length() const { return source_length_; }
4751  return &source_; }
4752  int dependency_count() { return dep_count_; }
4753  const char** dependencies() { return deps_; }
4754  void set_auto_enable(bool value) { auto_enable_ = value; }
4755  bool auto_enable() { return auto_enable_; }
4756 
4757  private:
4758  const char* name_;
4759  size_t source_length_; // expected to initialize before source_
4761  int dep_count_;
4762  const char** deps_;
4763  bool auto_enable_;
4764 
4765  // Disallow copying and assigning.
4766  Extension(const Extension&);
4767  void operator=(const Extension&);
4768 };
4769 
4770 
4771 void V8_EXPORT RegisterExtension(Extension* extension);
4772 
4773 
4774 // --- Statics ---
4775 
4776 V8_INLINE Local<Primitive> Undefined(Isolate* isolate);
4777 V8_INLINE Local<Primitive> Null(Isolate* isolate);
4778 V8_INLINE Local<Boolean> True(Isolate* isolate);
4779 V8_INLINE Local<Boolean> False(Isolate* isolate);
4780 
4781 
4792  public:
4794 
4804  void ConfigureDefaults(uint64_t physical_memory,
4805  uint64_t virtual_memory_limit);
4806 
4807  // Deprecated, will be removed soon.
4808  V8_DEPRECATED("Use two-args version instead",
4809  void ConfigureDefaults(uint64_t physical_memory,
4810  uint64_t virtual_memory_limit,
4811  uint32_t number_of_processors));
4812 
4813  int max_semi_space_size() const { return max_semi_space_size_; }
4814  void set_max_semi_space_size(int value) { max_semi_space_size_ = value; }
4815  int max_old_space_size() const { return max_old_space_size_; }
4816  void set_max_old_space_size(int value) { max_old_space_size_ = value; }
4817  int max_executable_size() const { return max_executable_size_; }
4818  void set_max_executable_size(int value) { max_executable_size_ = value; }
4819  uint32_t* stack_limit() const { return stack_limit_; }
4820  // Sets an address beyond which the VM's stack may not grow.
4821  void set_stack_limit(uint32_t* value) { stack_limit_ = value; }
4822  V8_DEPRECATED("Unused, will be removed", int max_available_threads() const) {
4823  return max_available_threads_;
4824  }
4825  // Set the number of threads available to V8, assuming at least 1.
4826  V8_DEPRECATED("Unused, will be removed",
4827  void set_max_available_threads(int value)) {
4828  max_available_threads_ = value;
4829  }
4830  size_t code_range_size() const { return code_range_size_; }
4831  void set_code_range_size(size_t value) {
4832  code_range_size_ = value;
4833  }
4834 
4835  private:
4836  int max_semi_space_size_;
4837  int max_old_space_size_;
4838  int max_executable_size_;
4839  uint32_t* stack_limit_;
4840  int max_available_threads_;
4841  size_t code_range_size_;
4842 };
4843 
4844 
4845 // --- Exceptions ---
4846 
4847 
4848 typedef void (*FatalErrorCallback)(const char* location, const char* message);
4849 
4850 
4851 typedef void (*MessageCallback)(Local<Message> message, Local<Value> error);
4852 
4853 // --- Tracing ---
4854 
4855 typedef void (*LogEventCallback)(const char* name, int event);
4856 
4862  public:
4863  static Local<Value> RangeError(Local<String> message);
4864  static Local<Value> ReferenceError(Local<String> message);
4865  static Local<Value> SyntaxError(Local<String> message);
4866  static Local<Value> TypeError(Local<String> message);
4867  static Local<Value> Error(Local<String> message);
4868 
4874  static Local<Message> CreateMessage(Local<Value> exception);
4875 
4880  static Local<StackTrace> GetStackTrace(Local<Value> exception);
4881 };
4882 
4883 
4884 // --- Counters Callbacks ---
4885 
4886 typedef int* (*CounterLookupCallback)(const char* name);
4887 
4888 typedef void* (*CreateHistogramCallback)(const char* name,
4889  int min,
4890  int max,
4891  size_t buckets);
4892 
4893 typedef void (*AddHistogramSampleCallback)(void* histogram, int sample);
4894 
4895 // --- Memory Allocation Callback ---
4905 };
4906 
4911  };
4912 
4914  AllocationAction action,
4915  int size);
4916 
4917 // --- Leave Script Callback ---
4918 typedef void (*CallCompletedCallback)();
4919 
4920 // --- Promise Reject Callback ---
4924 };
4925 
4927  public:
4929  Local<Value> value, Local<StackTrace> stack_trace)
4930  : promise_(promise),
4931  event_(event),
4932  value_(value),
4933  stack_trace_(stack_trace) {}
4934 
4935  V8_INLINE Local<Promise> GetPromise() const { return promise_; }
4936  V8_INLINE PromiseRejectEvent GetEvent() const { return event_; }
4937  V8_INLINE Local<Value> GetValue() const { return value_; }
4938 
4939  // DEPRECATED. Use v8::Exception::CreateMessage(GetValue())->GetStackTrace()
4940  V8_INLINE Local<StackTrace> GetStackTrace() const { return stack_trace_; }
4941 
4942  private:
4943  Local<Promise> promise_;
4944  PromiseRejectEvent event_;
4945  Local<Value> value_;
4946  Local<StackTrace> stack_trace_;
4947 };
4948 
4950 
4951 // --- Microtask Callback ---
4952 typedef void (*MicrotaskCallback)(void* data);
4953 
4954 // --- Failed Access Check Callback ---
4956  AccessType type,
4957  Local<Value> data);
4958 
4959 // --- AllowCodeGenerationFromStrings callbacks ---
4960 
4966 
4967 // --- Garbage Collection Callbacks ---
4968 
4976 enum GCType {
4980 };
4981 
4987 };
4988 
4989 typedef void (*GCPrologueCallback)(GCType type, GCCallbackFlags flags);
4990 typedef void (*GCEpilogueCallback)(GCType type, GCCallbackFlags flags);
4991 
4992 typedef void (*InterruptCallback)(Isolate* isolate, void* data);
4993 
4994 
5002  public:
5003  HeapStatistics();
5004  size_t total_heap_size() { return total_heap_size_; }
5005  size_t total_heap_size_executable() { return total_heap_size_executable_; }
5006  size_t total_physical_size() { return total_physical_size_; }
5007  size_t total_available_size() { return total_available_size_; }
5008  size_t used_heap_size() { return used_heap_size_; }
5009  size_t heap_size_limit() { return heap_size_limit_; }
5010 
5011  private:
5012  size_t total_heap_size_;
5013  size_t total_heap_size_executable_;
5014  size_t total_physical_size_;
5015  size_t total_available_size_;
5016  size_t used_heap_size_;
5017  size_t heap_size_limit_;
5018 
5019  friend class V8;
5020  friend class Isolate;
5021 };
5022 
5023 
5025  public:
5027  const char* space_name() { return space_name_; }
5028  size_t space_size() { return space_size_; }
5029  size_t space_used_size() { return space_used_size_; }
5030  size_t space_available_size() { return space_available_size_; }
5031  size_t physical_space_size() { return physical_space_size_; }
5032 
5033  private:
5034  const char* space_name_;
5035  size_t space_size_;
5036  size_t space_used_size_;
5037  size_t space_available_size_;
5038  size_t physical_space_size_;
5039 
5040  friend class Isolate;
5041 };
5042 
5043 
5045  public:
5047  const char* object_type() { return object_type_; }
5048  const char* object_sub_type() { return object_sub_type_; }
5049  size_t object_count() { return object_count_; }
5050  size_t object_size() { return object_size_; }
5051 
5052  private:
5053  const char* object_type_;
5054  const char* object_sub_type_;
5055  size_t object_count_;
5056  size_t object_size_;
5057 
5058  friend class Isolate;
5059 };
5060 
5061 
5062 class RetainedObjectInfo;
5063 
5064 
5076 typedef void (*FunctionEntryHook)(uintptr_t function,
5077  uintptr_t return_addr_location);
5078 
5085  enum EventType {
5092  };
5093  // Definition of the code position type. The "POSITION" type means the place
5094  // in the source code which are of interest when making stack traces to
5095  // pin-point the source location of a stack frame as close as possible.
5096  // The "STATEMENT_POSITION" means the place at the beginning of each
5097  // statement, and is used to indicate possible break locations.
5099 
5100  // Type of event.
5102  // Start of the instructions.
5103  void* code_start;
5104  // Size of the instructions.
5105  size_t code_len;
5106  // Script info for CODE_ADDED event.
5108  // User-defined data for *_LINE_INFO_* event. It's used to hold the source
5109  // code line information which is returned from the
5110  // CODE_START_LINE_INFO_RECORDING event. And it's passed to subsequent
5111  // CODE_ADD_LINE_POS_INFO and CODE_END_LINE_INFO_RECORDING events.
5112  void* user_data;
5113 
5114  struct name_t {
5115  // Name of the object associated with the code, note that the string is not
5116  // zero-terminated.
5117  const char* str;
5118  // Number of chars in str.
5119  size_t len;
5120  };
5121 
5122  struct line_info_t {
5123  // PC offset
5124  size_t offset;
5125  // Code postion
5126  size_t pos;
5127  // The position type.
5129  };
5130 
5131  union {
5132  // Only valid for CODE_ADDED.
5133  struct name_t name;
5134 
5135  // Only valid for CODE_ADD_LINE_POS_INFO
5137 
5138  // New location of instructions. Only valid for CODE_MOVED.
5140  };
5141 };
5142 
5148  // Generate callbacks for already existent code.
5150 };
5151 
5152 
5158 typedef void (*JitCodeEventHandler)(const JitCodeEvent* event);
5159 
5160 
5165  public:
5167  virtual void VisitExternalString(Local<String> string) {}
5168 };
5169 
5170 
5175  public:
5178  uint16_t class_id) {}
5179 };
5180 
5181 
5191  public:
5195  struct CreateParams {
5197  : entry_hook(NULL),
5198  code_event_handler(NULL),
5199  snapshot_blob(NULL),
5200  counter_lookup_callback(NULL),
5201  create_histogram_callback(NULL),
5202  add_histogram_sample_callback(NULL),
5203  array_buffer_allocator(NULL) {}
5204 
5213 
5219 
5224 
5229 
5230 
5236 
5245 
5251  };
5252 
5253 
5259  public:
5260  explicit Scope(Isolate* isolate) : isolate_(isolate) {
5261  isolate->Enter();
5262  }
5263 
5264  ~Scope() { isolate_->Exit(); }
5265 
5266  private:
5267  Isolate* const isolate_;
5268 
5269  // Prevent copying of Scope objects.
5270  Scope(const Scope&);
5271  Scope& operator=(const Scope&);
5272  };
5273 
5274 
5279  public:
5280  enum OnFailure { CRASH_ON_FAILURE, THROW_ON_FAILURE };
5281 
5282  DisallowJavascriptExecutionScope(Isolate* isolate, OnFailure on_failure);
5284 
5285  private:
5286  bool on_failure_;
5287  void* internal_;
5288 
5289  // Prevent copying of Scope objects.
5293  };
5294 
5295 
5300  public:
5301  explicit AllowJavascriptExecutionScope(Isolate* isolate);
5303 
5304  private:
5305  void* internal_throws_;
5306  void* internal_assert_;
5307 
5308  // Prevent copying of Scope objects.
5310  AllowJavascriptExecutionScope& operator=(
5312  };
5313 
5319  public:
5320  explicit SuppressMicrotaskExecutionScope(Isolate* isolate);
5322 
5323  private:
5324  internal::Isolate* isolate_;
5325 
5326  // Prevent copying of Scope objects.
5330  };
5331 
5338  kMinorGarbageCollection
5339  };
5340 
5347  kUseAsm = 0,
5348  kBreakIterator = 1,
5349  kLegacyConst = 2,
5350  kMarkDequeOverflow = 3,
5351  kStoreBufferOverflow = 4,
5352  kSlotsBufferOverflow = 5,
5353  kObjectObserve = 6,
5354  kForcedGC = 7,
5355  kUseCounterFeatureCount // This enum value must be last.
5356  };
5357 
5358  typedef void (*UseCounterCallback)(Isolate* isolate,
5359  UseCounterFeature feature);
5360 
5361 
5371  static Isolate* New(const CreateParams& params);
5372 
5373  static V8_DEPRECATED("Always pass CreateParams", Isolate* New());
5374 
5381  static Isolate* GetCurrent();
5382 
5393  void Enter();
5394 
5402  void Exit();
5403 
5408  void Dispose();
5409 
5414  V8_INLINE void SetData(uint32_t slot, void* data);
5415 
5420  V8_INLINE void* GetData(uint32_t slot);
5421 
5426  V8_INLINE static uint32_t GetNumberOfDataSlots();
5427 
5431  void GetHeapStatistics(HeapStatistics* heap_statistics);
5432 
5436  size_t NumberOfHeapSpaces();
5437 
5447  bool GetHeapSpaceStatistics(HeapSpaceStatistics* space_statistics,
5448  size_t index);
5449 
5453  size_t NumberOfTrackedHeapObjectTypes();
5454 
5464  bool GetHeapObjectStatisticsAtLastGC(HeapObjectStatistics* object_statistics,
5465  size_t type_index);
5466 
5479  void GetStackSample(const RegisterState& state, void** frames,
5480  size_t frames_limit, SampleInfo* sample_info);
5481 
5495  V8_INLINE int64_t
5496  AdjustAmountOfExternalAllocatedMemory(int64_t change_in_bytes);
5497 
5502  HeapProfiler* GetHeapProfiler();
5503 
5509  CpuProfiler* GetCpuProfiler();
5510 
5512  bool InContext();
5513 
5515  Local<Context> GetCurrentContext();
5516 
5522  Local<Context> GetCallingContext();
5523 
5525  Local<Context> GetEnteredContext();
5526 
5533  Local<Value> ThrowException(Local<Value> exception);
5534 
5546  template<typename T> void SetObjectGroupId(const Persistent<T>& object,
5547  UniqueId id);
5548 
5556  template<typename T> void SetReferenceFromGroup(UniqueId id,
5557  const Persistent<T>& child);
5558 
5565  template<typename T, typename S>
5566  void SetReference(const Persistent<T>& parent, const Persistent<S>& child);
5567 
5568  typedef void (*GCPrologueCallback)(Isolate* isolate,
5569  GCType type,
5570  GCCallbackFlags flags);
5571  typedef void (*GCEpilogueCallback)(Isolate* isolate,
5572  GCType type,
5573  GCCallbackFlags flags);
5574 
5584  void AddGCPrologueCallback(
5585  GCPrologueCallback callback, GCType gc_type_filter = kGCTypeAll);
5586 
5591  void RemoveGCPrologueCallback(GCPrologueCallback callback);
5592 
5602  void AddGCEpilogueCallback(
5603  GCEpilogueCallback callback, GCType gc_type_filter = kGCTypeAll);
5604 
5609  void RemoveGCEpilogueCallback(GCEpilogueCallback callback);
5610 
5611 
5619  void TerminateExecution();
5620 
5629  bool IsExecutionTerminating();
5630 
5645  void CancelTerminateExecution();
5646 
5655  void RequestInterrupt(InterruptCallback callback, void* data);
5656 
5667  void RequestGarbageCollectionForTesting(GarbageCollectionType type);
5668 
5672  void SetEventLogger(LogEventCallback that);
5673 
5681  void AddCallCompletedCallback(CallCompletedCallback callback);
5682 
5686  void RemoveCallCompletedCallback(CallCompletedCallback callback);
5687 
5688 
5693  void SetPromiseRejectCallback(PromiseRejectCallback callback);
5694 
5699  void RunMicrotasks();
5700 
5704  void EnqueueMicrotask(Local<Function> microtask);
5705 
5709  void EnqueueMicrotask(MicrotaskCallback microtask, void* data = NULL);
5710 
5715  void SetAutorunMicrotasks(bool autorun);
5716 
5721  bool WillAutorunMicrotasks() const;
5722 
5726  void SetUseCounterCallback(UseCounterCallback callback);
5727 
5732  void SetCounterFunction(CounterLookupCallback);
5733 
5740  void SetCreateHistogramFunction(CreateHistogramCallback);
5741  void SetAddHistogramSampleFunction(AddHistogramSampleCallback);
5742 
5757  bool IdleNotificationDeadline(double deadline_in_seconds);
5758 
5759  V8_DEPRECATE_SOON("use IdleNotificationDeadline()",
5760  bool IdleNotification(int idle_time_in_ms));
5761 
5766  void LowMemoryNotification();
5767 
5777  int ContextDisposedNotification(bool dependant_context = true);
5778 
5801  void SetJitCodeEventHandler(JitCodeEventOptions options,
5802  JitCodeEventHandler event_handler);
5803 
5813  void SetStackLimit(uintptr_t stack_limit);
5814 
5828  void GetCodeRange(void** start, size_t* length_in_bytes);
5829 
5831  void SetFatalErrorHandler(FatalErrorCallback that);
5832 
5837  void SetAllowCodeGenerationFromStringsCallback(
5839 
5844  bool IsDead();
5845 
5855  bool AddMessageListener(MessageCallback that,
5856  Local<Value> data = Local<Value>());
5857 
5861  void RemoveMessageListeners(MessageCallback that);
5862 
5864  void SetFailedAccessCheckCallbackFunction(FailedAccessCheckCallback);
5865 
5870  void SetCaptureStackTraceForUncaughtExceptions(
5871  bool capture, int frame_limit = 10,
5873 
5878  void AddMemoryAllocationCallback(MemoryAllocationCallback callback,
5879  ObjectSpace space, AllocationAction action);
5880 
5884  void RemoveMemoryAllocationCallback(MemoryAllocationCallback callback);
5885 
5891  void VisitExternalResources(ExternalResourceVisitor* visitor);
5892 
5897  void VisitHandlesWithClassIds(PersistentHandleVisitor* visitor);
5898 
5906  void VisitHandlesForPartialDependence(PersistentHandleVisitor* visitor);
5907 
5908  private:
5909  template <class K, class V, class Traits>
5911 
5912  Isolate();
5913  Isolate(const Isolate&);
5914  ~Isolate();
5915  Isolate& operator=(const Isolate&);
5916  void* operator new(size_t size);
5917  void operator delete(void*, size_t);
5918 
5919  void SetObjectGroupId(internal::Object** object, UniqueId id);
5920  void SetReferenceFromGroup(UniqueId id, internal::Object** object);
5921  void SetReference(internal::Object** parent, internal::Object** child);
5922  void CollectAllGarbage(const char* gc_reason);
5923 };
5924 
5926  public:
5927  const char* data;
5929 };
5930 
5931 
5936 typedef bool (*EntropySource)(unsigned char* buffer, size_t length);
5937 
5938 
5952 typedef uintptr_t (*ReturnAddressLocationResolver)(
5953  uintptr_t return_addr_location);
5954 
5955 
5959 class V8_EXPORT V8 {
5960  public:
5963  "Use isolate version",
5964  void SetFatalErrorHandler(FatalErrorCallback that));
5965 
5971  "Use isolate version", void SetAllowCodeGenerationFromStringsCallback(
5973 
5980  static V8_DEPRECATE_SOON(
5981  "Use isolate version",
5982  void SetArrayBufferAllocator(ArrayBuffer::Allocator* allocator));
5983 
5988  V8_INLINE static V8_DEPRECATE_SOON("no alternative", bool IsDead());
5989 
6005  static void SetNativesDataBlob(StartupData* startup_blob);
6006  static void SetSnapshotDataBlob(StartupData* startup_blob);
6007 
6013  static StartupData CreateSnapshotDataBlob(const char* custom_source = NULL);
6014 
6025  "Use isolate version",
6026  bool AddMessageListener(MessageCallback that,
6027  Local<Value> data = Local<Value>()));
6028 
6033  "Use isolate version", void RemoveMessageListeners(MessageCallback that));
6034 
6040  "Use isolate version",
6041  void SetCaptureStackTraceForUncaughtExceptions(
6042  bool capture, int frame_limit = 10,
6044 
6048  static void SetFlagsFromString(const char* str, int length);
6049 
6053  static void SetFlagsFromCommandLine(int* argc,
6054  char** argv,
6055  bool remove_flags);
6056 
6058  static const char* GetVersion();
6059 
6062  "Use isolate version",
6063  void SetFailedAccessCheckCallbackFunction(FailedAccessCheckCallback));
6064 
6075  static V8_DEPRECATE_SOON(
6076  "Use isolate version",
6077  void AddGCPrologueCallback(GCPrologueCallback callback,
6078  GCType gc_type_filter = kGCTypeAll));
6079 
6085  "Use isolate version",
6086  void RemoveGCPrologueCallback(GCPrologueCallback callback));
6087 
6098  static V8_DEPRECATE_SOON(
6099  "Use isolate version",
6100  void AddGCEpilogueCallback(GCEpilogueCallback callback,
6101  GCType gc_type_filter = kGCTypeAll));
6102 
6108  "Use isolate version",
6109  void RemoveGCEpilogueCallback(GCEpilogueCallback callback));
6110 
6116  "Use isolate version",
6117  void AddMemoryAllocationCallback(MemoryAllocationCallback callback,
6118  ObjectSpace space,
6119  AllocationAction action));
6120 
6125  "Use isolate version",
6126  void RemoveMemoryAllocationCallback(MemoryAllocationCallback callback));
6127 
6132  static bool Initialize();
6133 
6138  static void SetEntropySource(EntropySource source);
6139 
6144  static void SetReturnAddressLocationResolver(
6145  ReturnAddressLocationResolver return_address_resolver);
6146 
6156  V8_INLINE static V8_DEPRECATE_SOON("Use isolate version",
6157  void TerminateExecution(Isolate* isolate));
6158 
6170  "Use isolate version",
6171  bool IsExecutionTerminating(Isolate* isolate = NULL));
6172 
6190  "Use isolate version", void CancelTerminateExecution(Isolate* isolate));
6191 
6201  static bool Dispose();
6202 
6209  "Use isoalte version",
6210  void VisitExternalResources(ExternalResourceVisitor* visitor));
6211 
6217  "Use isolate version",
6218  void VisitHandlesWithClassIds(PersistentHandleVisitor* visitor));
6219 
6225  "Use isolate version",
6226  void VisitHandlesWithClassIds(Isolate* isolate,
6227  PersistentHandleVisitor* visitor));
6228 
6237  "Use isolate version",
6238  void VisitHandlesForPartialDependence(Isolate* isolate,
6239  PersistentHandleVisitor* visitor));
6240 
6248  static bool InitializeICU(const char* icu_data_file = NULL);
6249 
6254  static void InitializePlatform(Platform* platform);
6255 
6260  static void ShutdownPlatform();
6261 
6262  private:
6263  V8();
6264 
6265  static internal::Object** GlobalizeReference(internal::Isolate* isolate,
6266  internal::Object** handle);
6267  static internal::Object** CopyPersistent(internal::Object** handle);
6268  static void DisposeGlobal(internal::Object** global_handle);
6269  typedef WeakCallbackData<Value, void>::Callback WeakCallback;
6270  static void MakeWeak(internal::Object** global_handle, void* data,
6271  WeakCallback weak_callback);
6272  static void MakeWeak(internal::Object** global_handle, void* data,
6273  WeakCallbackInfo<void>::Callback weak_callback,
6274  WeakCallbackType type);
6275  static void MakeWeak(internal::Object** global_handle, void* data,
6276  // Must be 0 or -1.
6277  int internal_field_index1,
6278  // Must be 1 or -1.
6279  int internal_field_index2,
6280  WeakCallbackInfo<void>::Callback weak_callback);
6281  static void* ClearWeak(internal::Object** global_handle);
6282  static void Eternalize(Isolate* isolate,
6283  Value* handle,
6284  int* index);
6285  static Local<Value> GetEternal(Isolate* isolate, int index);
6286 
6287  static void FromJustIsNothing();
6288  static void ToLocalEmpty();
6289  static void InternalFieldOutOfBounds(int index);
6290  template <class T> friend class Local;
6291  template <class T>
6292  friend class MaybeLocal;
6293  template <class T>
6294  friend class Maybe;
6295  template <class T>
6296  friend class WeakCallbackInfo;
6297  template <class T> friend class Eternal;
6298  template <class T> friend class PersistentBase;
6299  template <class T, class M> friend class Persistent;
6300  friend class Context;
6301 };
6302 
6303 
6314 template <class T>
6315 class Maybe {
6316  public:
6317  V8_INLINE bool IsNothing() const { return !has_value; }
6318  V8_INLINE bool IsJust() const { return has_value; }
6319 
6320  // Will crash if the Maybe<> is nothing.
6321  V8_INLINE T FromJust() const {
6322  if (V8_UNLIKELY(!IsJust())) V8::FromJustIsNothing();
6323  return value;
6324  }
6325 
6326  V8_INLINE T FromMaybe(const T& default_value) const {
6327  return has_value ? value : default_value;
6328  }
6329 
6330  V8_INLINE bool operator==(const Maybe& other) const {
6331  return (IsJust() == other.IsJust()) &&
6332  (!IsJust() || FromJust() == other.FromJust());
6333  }
6334 
6335  V8_INLINE bool operator!=(const Maybe& other) const {
6336  return !operator==(other);
6337  }
6338 
6339  private:
6340  Maybe() : has_value(false) {}
6341  explicit Maybe(const T& t) : has_value(true), value(t) {}
6342 
6343  bool has_value;
6344  T value;
6345 
6346  template <class U>
6347  friend Maybe<U> Nothing();
6348  template <class U>
6349  friend Maybe<U> Just(const U& u);
6350 };
6351 
6352 
6353 template <class T>
6354 inline Maybe<T> Nothing() {
6355  return Maybe<T>();
6356 }
6357 
6358 
6359 template <class T>
6360 inline Maybe<T> Just(const T& t) {
6361  return Maybe<T>(t);
6362 }
6363 
6364 
6369  public:
6375  V8_DEPRECATE_SOON("Use isolate version", TryCatch());
6376 
6382  TryCatch(Isolate* isolate);
6383 
6387  ~TryCatch();
6388 
6392  bool HasCaught() const;
6393 
6402  bool CanContinue() const;
6403 
6416  bool HasTerminated() const;
6417 
6425  Local<Value> ReThrow();
6426 
6433  Local<Value> Exception() const;
6434 
6439  V8_DEPRECATE_SOON("Use maybe version.", Local<Value> StackTrace() const);
6441  Local<Context> context) const;
6442 
6450  Local<v8::Message> Message() const;
6451 
6462  void Reset();
6463 
6472  void SetVerbose(bool value);
6473 
6479  void SetCaptureMessage(bool value);
6480 
6492  static void* JSStackComparableAddress(v8::TryCatch* handler) {
6493  if (handler == NULL) return NULL;
6494  return handler->js_stack_comparable_address_;
6495  }
6496 
6497  private:
6498  void ResetInternal();
6499 
6500  // Make it hard to create heap-allocated TryCatch blocks.
6501  TryCatch(const TryCatch&);
6502  void operator=(const TryCatch&);
6503  void* operator new(size_t size);
6504  void operator delete(void*, size_t);
6505 
6506  v8::internal::Isolate* isolate_;
6507  v8::TryCatch* next_;
6508  void* exception_;
6509  void* message_obj_;
6510  void* js_stack_comparable_address_;
6511  bool is_verbose_ : 1;
6512  bool can_continue_ : 1;
6513  bool capture_message_ : 1;
6514  bool rethrow_ : 1;
6515  bool has_terminated_ : 1;
6516 
6517  friend class v8::internal::Isolate;
6518 };
6519 
6520 
6521 // --- Context ---
6522 
6523 
6528  public:
6529  ExtensionConfiguration() : name_count_(0), names_(NULL) { }
6530  ExtensionConfiguration(int name_count, const char* names[])
6531  : name_count_(name_count), names_(names) { }
6532 
6533  const char** begin() const { return &names_[0]; }
6534  const char** end() const { return &names_[name_count_]; }
6535 
6536  private:
6537  const int name_count_;
6538  const char** names_;
6539 };
6540 
6541 
6547  public:
6561 
6566  void DetachGlobal();
6567 
6586  static Local<Context> New(
6587  Isolate* isolate, ExtensionConfiguration* extensions = NULL,
6588  Local<ObjectTemplate> global_template = Local<ObjectTemplate>(),
6589  Local<Value> global_object = Local<Value>());
6590 
6595  void SetSecurityToken(Local<Value> token);
6596 
6598  void UseDefaultSecurityToken();
6599 
6601  Local<Value> GetSecurityToken();
6602 
6609  void Enter();
6610 
6615  void Exit();
6616 
6618  v8::Isolate* GetIsolate();
6619 
6625  enum EmbedderDataFields { kDebugIdIndex = 0 };
6626 
6632  V8_INLINE Local<Value> GetEmbedderData(int index);
6633 
6638  Local<Object> GetExtrasExportsObject();
6639 
6645  void SetEmbedderData(int index, Local<Value> value);
6646 
6653  V8_INLINE void* GetAlignedPointerFromEmbedderData(int index);
6654 
6660  void SetAlignedPointerInEmbedderData(int index, void* value);
6661 
6675  void AllowCodeGenerationFromStrings(bool allow);
6676 
6681  bool IsCodeGenerationFromStringsAllowed();
6682 
6688  void SetErrorMessageForCodeGenerationFromStrings(Local<String> message);
6689 
6694  class Scope {
6695  public:
6696  explicit V8_INLINE Scope(Local<Context> context) : context_(context) {
6697  context_->Enter();
6698  }
6699  V8_INLINE ~Scope() { context_->Exit(); }
6700 
6701  private:
6702  Local<Context> context_;
6703  };
6704 
6705  private:
6706  friend class Value;
6707  friend class Script;
6708  friend class Object;
6709  friend class Function;
6710 
6711  Local<Value> SlowGetEmbedderData(int index);
6712  void* SlowGetAlignedPointerFromEmbedderData(int index);
6713 };
6714 
6715 
6793  public:
6797  V8_INLINE explicit Unlocker(Isolate* isolate) { Initialize(isolate); }
6798 
6799  ~Unlocker();
6800  private:
6801  void Initialize(Isolate* isolate);
6802 
6803  internal::Isolate* isolate_;
6804 };
6805 
6806 
6808  public:
6812  V8_INLINE explicit Locker(Isolate* isolate) { Initialize(isolate); }
6813 
6814  ~Locker();
6815 
6820  static bool IsLocked(Isolate* isolate);
6821 
6825  static bool IsActive();
6826 
6827  private:
6828  void Initialize(Isolate* isolate);
6829 
6830  bool has_lock_;
6831  bool top_level_;
6832  internal::Isolate* isolate_;
6833 
6834  // Disallow copying and assigning.
6835  Locker(const Locker&);
6836  void operator=(const Locker&);
6837 };
6838 
6839 
6840 // --- Implementation ---
6841 
6842 
6843 namespace internal {
6844 
6845 const int kApiPointerSize = sizeof(void*); // NOLINT
6846 const int kApiIntSize = sizeof(int); // NOLINT
6847 const int kApiInt64Size = sizeof(int64_t); // NOLINT
6848 
6849 // Tag information for HeapObject.
6850 const int kHeapObjectTag = 1;
6851 const int kHeapObjectTagSize = 2;
6852 const intptr_t kHeapObjectTagMask = (1 << kHeapObjectTagSize) - 1;
6853 
6854 // Tag information for Smi.
6855 const int kSmiTag = 0;
6856 const int kSmiTagSize = 1;
6857 const intptr_t kSmiTagMask = (1 << kSmiTagSize) - 1;
6858 
6859 template <size_t ptr_size> struct SmiTagging;
6860 
6861 template<int kSmiShiftSize>
6862 V8_INLINE internal::Object* IntToSmi(int value) {
6863  int smi_shift_bits = kSmiTagSize + kSmiShiftSize;
6864  uintptr_t tagged_value =
6865  (static_cast<uintptr_t>(value) << smi_shift_bits) | kSmiTag;
6866  return reinterpret_cast<internal::Object*>(tagged_value);
6867 }
6868 
6869 // Smi constants for 32-bit systems.
6870 template <> struct SmiTagging<4> {
6871  enum { kSmiShiftSize = 0, kSmiValueSize = 31 };
6872  static int SmiShiftSize() { return kSmiShiftSize; }
6873  static int SmiValueSize() { return kSmiValueSize; }
6874  V8_INLINE static int SmiToInt(const internal::Object* value) {
6875  int shift_bits = kSmiTagSize + kSmiShiftSize;
6876  // Throw away top 32 bits and shift down (requires >> to be sign extending).
6877  return static_cast<int>(reinterpret_cast<intptr_t>(value)) >> shift_bits;
6878  }
6879  V8_INLINE static internal::Object* IntToSmi(int value) {
6880  return internal::IntToSmi<kSmiShiftSize>(value);
6881  }
6882  V8_INLINE static bool IsValidSmi(intptr_t value) {
6883  // To be representable as an tagged small integer, the two
6884  // most-significant bits of 'value' must be either 00 or 11 due to
6885  // sign-extension. To check this we add 01 to the two
6886  // most-significant bits, and check if the most-significant bit is 0
6887  //
6888  // CAUTION: The original code below:
6889  // bool result = ((value + 0x40000000) & 0x80000000) == 0;
6890  // may lead to incorrect results according to the C language spec, and
6891  // in fact doesn't work correctly with gcc4.1.1 in some cases: The
6892  // compiler may produce undefined results in case of signed integer
6893  // overflow. The computation must be done w/ unsigned ints.
6894  return static_cast<uintptr_t>(value + 0x40000000U) < 0x80000000U;
6895  }
6896 };
6897 
6898 // Smi constants for 64-bit systems.
6899 template <> struct SmiTagging<8> {
6900  enum { kSmiShiftSize = 31, kSmiValueSize = 32 };
6901  static int SmiShiftSize() { return kSmiShiftSize; }
6902  static int SmiValueSize() { return kSmiValueSize; }
6903  V8_INLINE static int SmiToInt(const internal::Object* value) {
6904  int shift_bits = kSmiTagSize + kSmiShiftSize;
6905  // Shift down and throw away top 32 bits.
6906  return static_cast<int>(reinterpret_cast<intptr_t>(value) >> shift_bits);
6907  }
6908  V8_INLINE static internal::Object* IntToSmi(int value) {
6909  return internal::IntToSmi<kSmiShiftSize>(value);
6910  }
6911  V8_INLINE static bool IsValidSmi(intptr_t value) {
6912  // To be representable as a long smi, the value must be a 32-bit integer.
6913  return (value == static_cast<int32_t>(value));
6914  }
6915 };
6916 
6920 V8_INLINE static bool SmiValuesAre31Bits() { return kSmiValueSize == 31; }
6921 V8_INLINE static bool SmiValuesAre32Bits() { return kSmiValueSize == 32; }
6922 
6928 class Internals {
6929  public:
6930  // These values match non-compiler-dependent values defined within
6931  // the implementation of v8.
6932  static const int kHeapObjectMapOffset = 0;
6935  static const int kStringResourceOffset = 3 * kApiPointerSize;
6936 
6937  static const int kOddballKindOffset = 3 * kApiPointerSize;
6939  static const int kJSObjectHeaderSize = 3 * kApiPointerSize;
6940  static const int kFixedArrayHeaderSize = 2 * kApiPointerSize;
6941  static const int kContextHeaderSize = 2 * kApiPointerSize;
6942  static const int kContextEmbedderDataIndex = 81;
6943  static const int kFullStringRepresentationMask = 0x07;
6944  static const int kStringEncodingMask = 0x4;
6945  static const int kExternalTwoByteRepresentationTag = 0x02;
6946  static const int kExternalOneByteRepresentationTag = 0x06;
6947 
6950  4 * kApiPointerSize;
6953  static const int kIsolateRootsOffset =
6956  static const int kUndefinedValueRootIndex = 5;
6957  static const int kNullValueRootIndex = 7;
6958  static const int kTrueValueRootIndex = 8;
6959  static const int kFalseValueRootIndex = 9;
6960  static const int kEmptyStringRootIndex = 10;
6961 
6962  // The external allocation limit should be below 256 MB on all architectures
6963  // to avoid that resource-constrained embedders run low on memory.
6964  static const int kExternalAllocationLimit = 192 * 1024 * 1024;
6965 
6966  static const int kNodeClassIdOffset = 1 * kApiPointerSize;
6967  static const int kNodeFlagsOffset = 1 * kApiPointerSize + 3;
6968  static const int kNodeStateMask = 0x7;
6969  static const int kNodeStateIsWeakValue = 2;
6970  static const int kNodeStateIsPendingValue = 3;
6971  static const int kNodeStateIsNearDeathValue = 4;
6972  static const int kNodeIsIndependentShift = 3;
6973  static const int kNodeIsPartiallyDependentShift = 4;
6974 
6975  static const int kJSObjectType = 0xbe;
6976  static const int kFirstNonstringType = 0x80;
6977  static const int kOddballType = 0x83;
6978  static const int kForeignType = 0x87;
6979 
6980  static const int kUndefinedOddballKind = 5;
6981  static const int kNullOddballKind = 3;
6982 
6983  static const uint32_t kNumIsolateDataSlots = 4;
6984 
6985  V8_EXPORT static void CheckInitializedImpl(v8::Isolate* isolate);
6986  V8_INLINE static void CheckInitialized(v8::Isolate* isolate) {
6987 #ifdef V8_ENABLE_CHECKS
6988  CheckInitializedImpl(isolate);
6989 #endif
6990  }
6991 
6992  V8_INLINE static bool HasHeapObjectTag(const internal::Object* value) {
6993  return ((reinterpret_cast<intptr_t>(value) & kHeapObjectTagMask) ==
6994  kHeapObjectTag);
6995  }
6996 
6997  V8_INLINE static int SmiValue(const internal::Object* value) {
6998  return PlatformSmiTagging::SmiToInt(value);
6999  }
7000 
7001  V8_INLINE static internal::Object* IntToSmi(int value) {
7002  return PlatformSmiTagging::IntToSmi(value);
7003  }
7004 
7005  V8_INLINE static bool IsValidSmi(intptr_t value) {
7006  return PlatformSmiTagging::IsValidSmi(value);
7007  }
7008 
7009  V8_INLINE static int GetInstanceType(const internal::Object* obj) {
7010  typedef internal::Object O;
7011  O* map = ReadField<O*>(obj, kHeapObjectMapOffset);
7012  // Map::InstanceType is defined so that it will always be loaded into
7013  // the LS 8 bits of one 16-bit word, regardless of endianess.
7014  return ReadField<uint16_t>(map, kMapInstanceTypeAndBitFieldOffset) & 0xff;
7015  }
7016 
7017  V8_INLINE static int GetOddballKind(const internal::Object* obj) {
7018  typedef internal::Object O;
7019  return SmiValue(ReadField<O*>(obj, kOddballKindOffset));
7020  }
7021 
7022  V8_INLINE static bool IsExternalTwoByteString(int instance_type) {
7023  int representation = (instance_type & kFullStringRepresentationMask);
7024  return representation == kExternalTwoByteRepresentationTag;
7025  }
7026 
7027  V8_INLINE static uint8_t GetNodeFlag(internal::Object** obj, int shift) {
7028  uint8_t* addr = reinterpret_cast<uint8_t*>(obj) + kNodeFlagsOffset;
7029  return *addr & static_cast<uint8_t>(1U << shift);
7030  }
7031 
7032  V8_INLINE static void UpdateNodeFlag(internal::Object** obj,
7033  bool value, int shift) {
7034  uint8_t* addr = reinterpret_cast<uint8_t*>(obj) + kNodeFlagsOffset;
7035  uint8_t mask = static_cast<uint8_t>(1U << shift);
7036  *addr = static_cast<uint8_t>((*addr & ~mask) | (value << shift));
7037  }
7038 
7039  V8_INLINE static uint8_t GetNodeState(internal::Object** obj) {
7040  uint8_t* addr = reinterpret_cast<uint8_t*>(obj) + kNodeFlagsOffset;
7041  return *addr & kNodeStateMask;
7042  }
7043 
7044  V8_INLINE static void UpdateNodeState(internal::Object** obj,
7045  uint8_t value) {
7046  uint8_t* addr = reinterpret_cast<uint8_t*>(obj) + kNodeFlagsOffset;
7047  *addr = static_cast<uint8_t>((*addr & ~kNodeStateMask) | value);
7048  }
7049 
7050  V8_INLINE static void SetEmbedderData(v8::Isolate* isolate,
7051  uint32_t slot,
7052  void* data) {
7053  uint8_t *addr = reinterpret_cast<uint8_t *>(isolate) +
7055  *reinterpret_cast<void**>(addr) = data;
7056  }
7057 
7058  V8_INLINE static void* GetEmbedderData(const v8::Isolate* isolate,
7059  uint32_t slot) {
7060  const uint8_t* addr = reinterpret_cast<const uint8_t*>(isolate) +
7062  return *reinterpret_cast<void* const*>(addr);
7063  }
7064 
7065  V8_INLINE static internal::Object** GetRoot(v8::Isolate* isolate,
7066  int index) {
7067  uint8_t* addr = reinterpret_cast<uint8_t*>(isolate) + kIsolateRootsOffset;
7068  return reinterpret_cast<internal::Object**>(addr + index * kApiPointerSize);
7069  }
7070 
7071  template <typename T>
7072  V8_INLINE static T ReadField(const internal::Object* ptr, int offset) {
7073  const uint8_t* addr =
7074  reinterpret_cast<const uint8_t*>(ptr) + offset - kHeapObjectTag;
7075  return *reinterpret_cast<const T*>(addr);
7076  }
7077 
7078  template <typename T>
7079  V8_INLINE static T ReadEmbedderData(const v8::Context* context, int index) {
7080  typedef internal::Object O;
7081  typedef internal::Internals I;
7082  O* ctx = *reinterpret_cast<O* const*>(context);
7083  int embedder_data_offset = I::kContextHeaderSize +
7084  (internal::kApiPointerSize * I::kContextEmbedderDataIndex);
7085  O* embedder_data = I::ReadField<O*>(ctx, embedder_data_offset);
7086  int value_offset =
7087  I::kFixedArrayHeaderSize + (internal::kApiPointerSize * index);
7088  return I::ReadField<T>(embedder_data, value_offset);
7089  }
7090 };
7091 
7092 } // namespace internal
7093 
7094 
7095 template <class T>
7097  return New(isolate, that.val_);
7098 }
7099 
7100 template <class T>
7102  return New(isolate, that.val_);
7103 }
7104 
7105 
7106 template <class T>
7107 Local<T> Local<T>::New(Isolate* isolate, T* that) {
7108  if (that == NULL) return Local<T>();
7109  T* that_ptr = that;
7110  internal::Object** p = reinterpret_cast<internal::Object**>(that_ptr);
7111  return Local<T>(reinterpret_cast<T*>(HandleScope::CreateHandle(
7112  reinterpret_cast<internal::Isolate*>(isolate), *p)));
7113 }
7114 
7115 
7116 template<class T>
7117 template<class S>
7118 void Eternal<T>::Set(Isolate* isolate, Local<S> handle) {
7119  TYPE_CHECK(T, S);
7120  V8::Eternalize(isolate, reinterpret_cast<Value*>(*handle), &this->index_);
7121 }
7122 
7123 
7124 template<class T>
7126  return Local<T>(reinterpret_cast<T*>(*V8::GetEternal(isolate, index_)));
7127 }
7128 
7129 
7130 template <class T>
7132  if (V8_UNLIKELY(val_ == nullptr)) V8::ToLocalEmpty();
7133  return Local<T>(val_);
7134 }
7135 
7136 
7137 template <class T>
7139 #ifdef V8_ENABLE_CHECKS
7140  if (index < 0 || index >= kInternalFieldsInWeakCallback) {
7141  V8::InternalFieldOutOfBounds(index);
7142  }
7143 #endif
7144  return internal_fields_[index];
7145 }
7146 
7147 
7148 template <class T>
7149 T* PersistentBase<T>::New(Isolate* isolate, T* that) {
7150  if (that == NULL) return NULL;
7151  internal::Object** p = reinterpret_cast<internal::Object**>(that);
7152  return reinterpret_cast<T*>(
7153  V8::GlobalizeReference(reinterpret_cast<internal::Isolate*>(isolate),
7154  p));
7155 }
7156 
7157 
7158 template <class T, class M>
7159 template <class S, class M2>
7161  TYPE_CHECK(T, S);
7162  this->Reset();
7163  if (that.IsEmpty()) return;
7164  internal::Object** p = reinterpret_cast<internal::Object**>(that.val_);
7165  this->val_ = reinterpret_cast<T*>(V8::CopyPersistent(p));
7166  M::Copy(that, this);
7167 }
7168 
7169 
7170 template <class T>
7172  typedef internal::Internals I;
7173  if (this->IsEmpty()) return false;
7174  return I::GetNodeFlag(reinterpret_cast<internal::Object**>(this->val_),
7175  I::kNodeIsIndependentShift);
7176 }
7177 
7178 
7179 template <class T>
7181  typedef internal::Internals I;
7182  if (this->IsEmpty()) return false;
7183  uint8_t node_state =
7184  I::GetNodeState(reinterpret_cast<internal::Object**>(this->val_));
7185  return node_state == I::kNodeStateIsNearDeathValue ||
7186  node_state == I::kNodeStateIsPendingValue;
7187 }
7188 
7189 
7190 template <class T>
7192  typedef internal::Internals I;
7193  if (this->IsEmpty()) return false;
7194  return I::GetNodeState(reinterpret_cast<internal::Object**>(this->val_)) ==
7195  I::kNodeStateIsWeakValue;
7196 }
7197 
7198 
7199 template <class T>
7201  if (this->IsEmpty()) return;
7202  V8::DisposeGlobal(reinterpret_cast<internal::Object**>(this->val_));
7203  val_ = 0;
7204 }
7205 
7206 
7207 template <class T>
7208 template <class S>
7209 void PersistentBase<T>::Reset(Isolate* isolate, const Local<S>& other) {
7210  TYPE_CHECK(T, S);
7211  Reset();
7212  if (other.IsEmpty()) return;
7213  this->val_ = New(isolate, other.val_);
7214 }
7215 
7216 
7217 template <class T>
7218 template <class S>
7220  const PersistentBase<S>& other) {
7221  TYPE_CHECK(T, S);
7222  Reset();
7223  if (other.IsEmpty()) return;
7224  this->val_ = New(isolate, other.val_);
7225 }
7226 
7227 
7228 template <class T>
7229 template <typename S, typename P>
7231  P* parameter,
7232  typename WeakCallbackData<S, P>::Callback callback) {
7233  TYPE_CHECK(S, T);
7234  typedef typename WeakCallbackData<Value, void>::Callback Callback;
7235  V8::MakeWeak(reinterpret_cast<internal::Object**>(this->val_), parameter,
7236  reinterpret_cast<Callback>(callback));
7237 }
7238 
7239 
7240 template <class T>
7241 template <typename P>
7243  P* parameter,
7244  typename WeakCallbackData<T, P>::Callback callback) {
7245  SetWeak<T, P>(parameter, callback);
7246 }
7247 
7248 
7249 template <class T>
7250 template <typename P>
7252  P* parameter, typename WeakCallbackInfo<P>::Callback callback,
7253  int internal_field_index1, int internal_field_index2) {
7254  typedef typename WeakCallbackInfo<void>::Callback Callback;
7255  V8::MakeWeak(reinterpret_cast<internal::Object**>(this->val_), parameter,
7256  internal_field_index1, internal_field_index2,
7257  reinterpret_cast<Callback>(callback));
7258 }
7259 
7260 
7261 template <class T>
7262 template <typename P>
7264  P* parameter, typename WeakCallbackInfo<P>::Callback callback,
7265  WeakCallbackType type) {
7266  typedef typename WeakCallbackInfo<void>::Callback Callback;
7267  V8::MakeWeak(reinterpret_cast<internal::Object**>(this->val_), parameter,
7268  reinterpret_cast<Callback>(callback), type);
7269 }
7270 
7271 
7272 template <class T>
7273 template <typename P>
7275  return reinterpret_cast<P*>(
7276  V8::ClearWeak(reinterpret_cast<internal::Object**>(this->val_)));
7277 }
7278 
7279 
7280 template <class T>
7282  typedef internal::Internals I;
7283  if (this->IsEmpty()) return;
7284  I::UpdateNodeFlag(reinterpret_cast<internal::Object**>(this->val_),
7285  true,
7286  I::kNodeIsIndependentShift);
7287 }
7288 
7289 
7290 template <class T>
7292  typedef internal::Internals I;
7293  if (this->IsEmpty()) return;
7294  I::UpdateNodeFlag(reinterpret_cast<internal::Object**>(this->val_),
7295  true,
7296  I::kNodeIsPartiallyDependentShift);
7297 }
7298 
7299 
7300 template <class T>
7301 void PersistentBase<T>::SetWrapperClassId(uint16_t class_id) {
7302  typedef internal::Internals I;
7303  if (this->IsEmpty()) return;
7304  internal::Object** obj = reinterpret_cast<internal::Object**>(this->val_);
7305  uint8_t* addr = reinterpret_cast<uint8_t*>(obj) + I::kNodeClassIdOffset;
7306  *reinterpret_cast<uint16_t*>(addr) = class_id;
7307 }
7308 
7309 
7310 template <class T>
7312  typedef internal::Internals I;
7313  if (this->IsEmpty()) return 0;
7314  internal::Object** obj = reinterpret_cast<internal::Object**>(this->val_);
7315  uint8_t* addr = reinterpret_cast<uint8_t*>(obj) + I::kNodeClassIdOffset;
7316  return *reinterpret_cast<uint16_t*>(addr);
7317 }
7318 
7319 
7320 template<typename T>
7321 ReturnValue<T>::ReturnValue(internal::Object** slot) : value_(slot) {}
7322 
7323 template<typename T>
7324 template<typename S>
7325 void ReturnValue<T>::Set(const Persistent<S>& handle) {
7326  TYPE_CHECK(T, S);
7327  if (V8_UNLIKELY(handle.IsEmpty())) {
7328  *value_ = GetDefaultValue();
7329  } else {
7330  *value_ = *reinterpret_cast<internal::Object**>(*handle);
7331  }
7332 }
7333 
7334 template <typename T>
7335 template <typename S>
7336 void ReturnValue<T>::Set(const Global<S>& handle) {
7337  TYPE_CHECK(T, S);
7338  if (V8_UNLIKELY(handle.IsEmpty())) {
7339  *value_ = GetDefaultValue();
7340  } else {
7341  *value_ = *reinterpret_cast<internal::Object**>(*handle);
7342  }
7343 }
7344 
7345 template <typename T>
7346 template <typename S>
7347 void ReturnValue<T>::Set(const Local<S> handle) {
7348  TYPE_CHECK(T, S);
7349  if (V8_UNLIKELY(handle.IsEmpty())) {
7350  *value_ = GetDefaultValue();
7351  } else {
7352  *value_ = *reinterpret_cast<internal::Object**>(*handle);
7353  }
7354 }
7355 
7356 template<typename T>
7357 void ReturnValue<T>::Set(double i) {
7358  TYPE_CHECK(T, Number);
7359  Set(Number::New(GetIsolate(), i));
7360 }
7361 
7362 template<typename T>
7363 void ReturnValue<T>::Set(int32_t i) {
7364  TYPE_CHECK(T, Integer);
7365  typedef internal::Internals I;
7366  if (V8_LIKELY(I::IsValidSmi(i))) {
7367  *value_ = I::IntToSmi(i);
7368  return;
7369  }
7370  Set(Integer::New(GetIsolate(), i));
7371 }
7372 
7373 template<typename T>
7374 void ReturnValue<T>::Set(uint32_t i) {
7375  TYPE_CHECK(T, Integer);
7376  // Can't simply use INT32_MAX here for whatever reason.
7377  bool fits_into_int32_t = (i & (1U << 31)) == 0;
7378  if (V8_LIKELY(fits_into_int32_t)) {
7379  Set(static_cast<int32_t>(i));
7380  return;
7381  }
7382  Set(Integer::NewFromUnsigned(GetIsolate(), i));
7383 }
7384 
7385 template<typename T>
7386 void ReturnValue<T>::Set(bool value) {
7387  TYPE_CHECK(T, Boolean);
7388  typedef internal::Internals I;
7389  int root_index;
7390  if (value) {
7391  root_index = I::kTrueValueRootIndex;
7392  } else {
7393  root_index = I::kFalseValueRootIndex;
7394  }
7395  *value_ = *I::GetRoot(GetIsolate(), root_index);
7396 }
7397 
7398 template<typename T>
7400  TYPE_CHECK(T, Primitive);
7401  typedef internal::Internals I;
7402  *value_ = *I::GetRoot(GetIsolate(), I::kNullValueRootIndex);
7403 }
7404 
7405 template<typename T>
7407  TYPE_CHECK(T, Primitive);
7408  typedef internal::Internals I;
7409  *value_ = *I::GetRoot(GetIsolate(), I::kUndefinedValueRootIndex);
7410 }
7411 
7412 template<typename T>
7414  TYPE_CHECK(T, String);
7415  typedef internal::Internals I;
7416  *value_ = *I::GetRoot(GetIsolate(), I::kEmptyStringRootIndex);
7417 }
7418 
7419 template<typename T>
7421  // Isolate is always the pointer below the default value on the stack.
7422  return *reinterpret_cast<Isolate**>(&value_[-2]);
7423 }
7424 
7425 template<typename T>
7426 template<typename S>
7427 void ReturnValue<T>::Set(S* whatever) {
7428  // Uncompilable to prevent inadvertent misuse.
7429  TYPE_CHECK(S*, Primitive);
7430 }
7431 
7432 template<typename T>
7433 internal::Object* ReturnValue<T>::GetDefaultValue() {
7434  // Default value is always the pointer below value_ on the stack.
7435  return value_[-1];
7436 }
7437 
7438 
7439 template<typename T>
7440 FunctionCallbackInfo<T>::FunctionCallbackInfo(internal::Object** implicit_args,
7441  internal::Object** values,
7442  int length,
7443  bool is_construct_call)
7444  : implicit_args_(implicit_args),
7445  values_(values),
7446  length_(length),
7447  is_construct_call_(is_construct_call) { }
7448 
7449 
7450 template<typename T>
7452  if (i < 0 || length_ <= i) return Local<Value>(*Undefined(GetIsolate()));
7453  return Local<Value>(reinterpret_cast<Value*>(values_ - i));
7454 }
7455 
7456 
7457 template<typename T>
7459  return Local<Function>(reinterpret_cast<Function*>(
7460  &implicit_args_[kCalleeIndex]));
7461 }
7462 
7463 
7464 template<typename T>
7466  return Local<Object>(reinterpret_cast<Object*>(values_ + 1));
7467 }
7468 
7469 
7470 template<typename T>
7472  return Local<Object>(reinterpret_cast<Object*>(
7473  &implicit_args_[kHolderIndex]));
7474 }
7475 
7476 
7477 template<typename T>
7479  return Local<Value>(reinterpret_cast<Value*>(&implicit_args_[kDataIndex]));
7480 }
7481 
7482 
7483 template<typename T>
7485  return *reinterpret_cast<Isolate**>(&implicit_args_[kIsolateIndex]);
7486 }
7487 
7488 
7489 template<typename T>
7491  return ReturnValue<T>(&implicit_args_[kReturnValueIndex]);
7492 }
7493 
7494 
7495 template<typename T>
7497  return is_construct_call_ & 0x1;
7498 }
7499 
7500 
7501 template<typename T>
7503  return length_;
7504 }
7505 
7507  Local<Integer> resource_line_offset,
7508  Local<Integer> resource_column_offset,
7509  Local<Boolean> resource_is_shared_cross_origin,
7510  Local<Integer> script_id,
7511  Local<Boolean> resource_is_embedder_debug_script,
7512  Local<Value> source_map_url,
7513  Local<Boolean> resource_is_opaque)
7514  : resource_name_(resource_name),
7515  resource_line_offset_(resource_line_offset),
7516  resource_column_offset_(resource_column_offset),
7517  options_(!resource_is_embedder_debug_script.IsEmpty() &&
7518  resource_is_embedder_debug_script->IsTrue(),
7519  !resource_is_shared_cross_origin.IsEmpty() &&
7520  resource_is_shared_cross_origin->IsTrue(),
7521  !resource_is_opaque.IsEmpty() && resource_is_opaque->IsTrue()),
7522  script_id_(script_id),
7523  source_map_url_(source_map_url) {}
7524 
7525 Local<Value> ScriptOrigin::ResourceName() const { return resource_name_; }
7526 
7527 
7529  return resource_line_offset_;
7530 }
7531 
7532 
7534  return resource_column_offset_;
7535 }
7536 
7537 
7538 Local<Integer> ScriptOrigin::ScriptID() const { return script_id_; }
7539 
7540 
7541 Local<Value> ScriptOrigin::SourceMapUrl() const { return source_map_url_; }
7542 
7543 
7545  CachedData* data)
7546  : source_string(string),
7547  resource_name(origin.ResourceName()),
7548  resource_line_offset(origin.ResourceLineOffset()),
7549  resource_column_offset(origin.ResourceColumnOffset()),
7550  resource_options(origin.Options()),
7551  source_map_url(origin.SourceMapUrl()),
7552  cached_data(data) {}
7553 
7554 
7556  CachedData* data)
7557  : source_string(string), cached_data(data) {}
7558 
7559 
7561  delete cached_data;
7562 }
7563 
7564 
7566  const {
7567  return cached_data;
7568 }
7569 
7570 
7571 Local<Boolean> Boolean::New(Isolate* isolate, bool value) {
7572  return value ? True(isolate) : False(isolate);
7573 }
7574 
7575 
7576 void Template::Set(Isolate* isolate, const char* name, v8::Local<Data> value) {
7578  .ToLocalChecked(),
7579  value);
7580 }
7581 
7582 
7584 #ifndef V8_ENABLE_CHECKS
7585  typedef internal::Object O;
7586  typedef internal::HeapObject HO;
7587  typedef internal::Internals I;
7588  O* obj = *reinterpret_cast<O**>(this);
7589  // Fast path: If the object is a plain JSObject, which is the common case, we
7590  // know where to find the internal fields and can return the value directly.
7591  if (I::GetInstanceType(obj) == I::kJSObjectType) {
7592  int offset = I::kJSObjectHeaderSize + (internal::kApiPointerSize * index);
7593  O* value = I::ReadField<O*>(obj, offset);
7594  O** result = HandleScope::CreateHandle(reinterpret_cast<HO*>(obj), value);
7595  return Local<Value>(reinterpret_cast<Value*>(result));
7596  }
7597 #endif
7598  return SlowGetInternalField(index);
7599 }
7600 
7601 
7603 #ifndef V8_ENABLE_CHECKS
7604  typedef internal::Object O;
7605  typedef internal::Internals I;
7606  O* obj = *reinterpret_cast<O**>(this);
7607  // Fast path: If the object is a plain JSObject, which is the common case, we
7608  // know where to find the internal fields and can return the value directly.
7609  if (V8_LIKELY(I::GetInstanceType(obj) == I::kJSObjectType)) {
7610  int offset = I::kJSObjectHeaderSize + (internal::kApiPointerSize * index);
7611  return I::ReadField<void*>(obj, offset);
7612  }
7613 #endif
7614  return SlowGetAlignedPointerFromInternalField(index);
7615 }
7616 
7617 
7619 #ifdef V8_ENABLE_CHECKS
7620  CheckCast(value);
7621 #endif
7622  return static_cast<String*>(value);
7623 }
7624 
7625 
7627  typedef internal::Object* S;
7628  typedef internal::Internals I;
7629  I::CheckInitialized(isolate);
7630  S* slot = I::GetRoot(isolate, I::kEmptyStringRootIndex);
7631  return Local<String>(reinterpret_cast<String*>(slot));
7632 }
7633 
7634 
7636  typedef internal::Object O;
7637  typedef internal::Internals I;
7638  O* obj = *reinterpret_cast<O* const*>(this);
7640  if (I::IsExternalTwoByteString(I::GetInstanceType(obj))) {
7641  void* value = I::ReadField<void*>(obj, I::kStringResourceOffset);
7642  result = reinterpret_cast<String::ExternalStringResource*>(value);
7643  } else {
7644  result = NULL;
7645  }
7646 #ifdef V8_ENABLE_CHECKS
7647  VerifyExternalStringResource(result);
7648 #endif
7649  return result;
7650 }
7651 
7652 
7654  String::Encoding* encoding_out) const {
7655  typedef internal::Object O;
7656  typedef internal::Internals I;
7657  O* obj = *reinterpret_cast<O* const*>(this);
7658  int type = I::GetInstanceType(obj) & I::kFullStringRepresentationMask;
7659  *encoding_out = static_cast<Encoding>(type & I::kStringEncodingMask);
7660  ExternalStringResourceBase* resource = NULL;
7661  if (type == I::kExternalOneByteRepresentationTag ||
7662  type == I::kExternalTwoByteRepresentationTag) {
7663  void* value = I::ReadField<void*>(obj, I::kStringResourceOffset);
7664  resource = static_cast<ExternalStringResourceBase*>(value);
7665  }
7666 #ifdef V8_ENABLE_CHECKS
7667  VerifyExternalStringResourceBase(resource, *encoding_out);
7668 #endif
7669  return resource;
7670 }
7671 
7672 
7673 bool Value::IsUndefined() const {
7674 #ifdef V8_ENABLE_CHECKS
7675  return FullIsUndefined();
7676 #else
7677  return QuickIsUndefined();
7678 #endif
7679 }
7680 
7681 bool Value::QuickIsUndefined() const {
7682  typedef internal::Object O;
7683  typedef internal::Internals I;
7684  O* obj = *reinterpret_cast<O* const*>(this);
7685  if (!I::HasHeapObjectTag(obj)) return false;
7686  if (I::GetInstanceType(obj) != I::kOddballType) return false;
7687  return (I::GetOddballKind(obj) == I::kUndefinedOddballKind);
7688 }
7689 
7690 
7691 bool Value::IsNull() const {
7692 #ifdef V8_ENABLE_CHECKS
7693  return FullIsNull();
7694 #else
7695  return QuickIsNull();
7696 #endif
7697 }
7698 
7699 bool Value::QuickIsNull() const {
7700  typedef internal::Object O;
7701  typedef internal::Internals I;
7702  O* obj = *reinterpret_cast<O* const*>(this);
7703  if (!I::HasHeapObjectTag(obj)) return false;
7704  if (I::GetInstanceType(obj) != I::kOddballType) return false;
7705  return (I::GetOddballKind(obj) == I::kNullOddballKind);
7706 }
7707 
7708 
7709 bool Value::IsString() const {
7710 #ifdef V8_ENABLE_CHECKS
7711  return FullIsString();
7712 #else
7713  return QuickIsString();
7714 #endif
7715 }
7716 
7717 bool Value::QuickIsString() const {
7718  typedef internal::Object O;
7719  typedef internal::Internals I;
7720  O* obj = *reinterpret_cast<O* const*>(this);
7721  if (!I::HasHeapObjectTag(obj)) return false;
7722  return (I::GetInstanceType(obj) < I::kFirstNonstringType);
7723 }
7724 
7725 
7726 template <class T> Value* Value::Cast(T* value) {
7727  return static_cast<Value*>(value);
7728 }
7729 
7730 
7732  return ToBoolean(Isolate::GetCurrent()->GetCurrentContext())
7733  .FromMaybe(Local<Boolean>());
7734 }
7735 
7736 
7738  return ToNumber(Isolate::GetCurrent()->GetCurrentContext())
7739  .FromMaybe(Local<Number>());
7740 }
7741 
7742 
7744  return ToString(Isolate::GetCurrent()->GetCurrentContext())
7745  .FromMaybe(Local<String>());
7746 }
7747 
7748 
7750  return ToDetailString(Isolate::GetCurrent()->GetCurrentContext())
7751  .FromMaybe(Local<String>());
7752 }
7753 
7754 
7756  return ToObject(Isolate::GetCurrent()->GetCurrentContext())
7757  .FromMaybe(Local<Object>());
7758 }
7759 
7760 
7762  return ToInteger(Isolate::GetCurrent()->GetCurrentContext())
7763  .FromMaybe(Local<Integer>());
7764 }
7765 
7766 
7768  return ToUint32(Isolate::GetCurrent()->GetCurrentContext())
7769  .FromMaybe(Local<Uint32>());
7770 }
7771 
7772 
7774  return ToInt32(Isolate::GetCurrent()->GetCurrentContext())
7775  .FromMaybe(Local<Int32>());
7776 }
7777 
7778 
7780 #ifdef V8_ENABLE_CHECKS
7781  CheckCast(value);
7782 #endif
7783  return static_cast<Boolean*>(value);
7784 }
7785 
7786 
7788 #ifdef V8_ENABLE_CHECKS
7789  CheckCast(value);
7790 #endif
7791  return static_cast<Name*>(value);
7792 }
7793 
7794 
7796 #ifdef V8_ENABLE_CHECKS
7797  CheckCast(value);
7798 #endif
7799  return static_cast<Symbol*>(value);
7800 }
7801 
7802 
7804 #ifdef V8_ENABLE_CHECKS
7805  CheckCast(value);
7806 #endif
7807  return static_cast<Number*>(value);
7808 }
7809 
7810 
7812 #ifdef V8_ENABLE_CHECKS
7813  CheckCast(value);
7814 #endif
7815  return static_cast<Integer*>(value);
7816 }
7817 
7818 
7820 #ifdef V8_ENABLE_CHECKS
7821  CheckCast(value);
7822 #endif
7823  return static_cast<Int32*>(value);
7824 }
7825 
7826 
7828 #ifdef V8_ENABLE_CHECKS
7829  CheckCast(value);
7830 #endif
7831  return static_cast<Uint32*>(value);
7832 }
7833 
7834 
7836 #ifdef V8_ENABLE_CHECKS<