diff options
Diffstat (limited to 'Plugins/skins/libs/v8.h')
| -rw-r--r-- | Plugins/skins/libs/v8.h | 2036 |
1 files changed, 1625 insertions, 411 deletions
diff --git a/Plugins/skins/libs/v8.h b/Plugins/skins/libs/v8.h index 24ea84b..9c9edf7 100644 --- a/Plugins/skins/libs/v8.h +++ b/Plugins/skins/libs/v8.h @@ -1,4 +1,4 @@ -// Copyright 2007-2008 the V8 project authors. All rights reserved.
+// Copyright 2007-2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
@@ -41,50 +41,50 @@ #include <stdio.h>
#ifdef _WIN32
+// When compiling on MinGW stdint.h is available.
+#ifdef __MINGW32__
+#include <stdint.h>
+#else // __MINGW32__
+typedef signed char int8_t;
+typedef unsigned char uint8_t;
+typedef short int16_t; // NOLINT
+typedef unsigned short uint16_t; // NOLINT
typedef int int32_t;
typedef unsigned int uint32_t;
-typedef unsigned short uint16_t; // NOLINT
-typedef long long int64_t; // NOLINT
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+// intptr_t and friends are defined in crtdefs.h through stdio.h.
+#endif // __MINGW32__
// Setup for Windows DLL export/import. When building the V8 DLL the
// BUILDING_V8_SHARED needs to be defined. When building a program which uses
// the V8 DLL USING_V8_SHARED needs to be defined. When either building the V8
// static library or building a program which uses the V8 static library neither
// BUILDING_V8_SHARED nor USING_V8_SHARED should be defined.
-// The reason for having both EXPORT and EXPORT_INLINE is that classes which
-// have their code inside this header file needs to have __declspec(dllexport)
-// when building the DLL but cannot have __declspec(dllimport) when building
-// a program which uses the DLL.
#if defined(BUILDING_V8_SHARED) && defined(USING_V8_SHARED)
#error both BUILDING_V8_SHARED and USING_V8_SHARED are set - please check the\
build configuration to ensure that at most one of these is set
#endif
#ifdef BUILDING_V8_SHARED
-#define EXPORT __declspec(dllexport)
-#define EXPORT_INLINE __declspec(dllexport)
+#define V8EXPORT __declspec(dllexport)
#elif USING_V8_SHARED
-#define EXPORT __declspec(dllimport)
-#define EXPORT_INLINE
+#define V8EXPORT __declspec(dllimport)
#else
-#define EXPORT
-#define EXPORT_INLINE
+#define V8EXPORT
#endif // BUILDING_V8_SHARED
#else // _WIN32
#include <stdint.h>
-// Setup for Linux shared library export. There is no need to destinguish
-// neither between building or using the V8 shared library nor between using
-// the shared or static V8 library as there is on Windows. Therefore there is
-// no checking of BUILDING_V8_SHARED and USING_V8_SHARED.
-#if defined(__GNUC__) && (__GNUC__ >= 4)
-#define EXPORT __attribute__ ((visibility("default")))
-#define EXPORT_INLINE __attribute__ ((visibility("default")))
+// Setup for Linux shared library export. There is no need to distinguish
+// between building or using the V8 shared library, but we should not
+// export symbols when we are building a static library.
+#if defined(__GNUC__) && (__GNUC__ >= 4) && defined(V8_SHARED)
+#define V8EXPORT __attribute__ ((visibility("default")))
#else // defined(__GNUC__) && (__GNUC__ >= 4)
-#define EXPORT
-#define EXPORT_INLINE
+#define V8EXPORT
#endif // defined(__GNUC__) && (__GNUC__ >= 4)
#endif // _WIN32
@@ -117,6 +117,18 @@ template <class T> class Persistent; class FunctionTemplate;
class ObjectTemplate;
class Data;
+class AccessorInfo;
+class StackTrace;
+class StackFrame;
+
+namespace internal {
+
+class Arguments;
+class Object;
+class Heap;
+class Top;
+
+}
// --- W e a k H a n d l e s
@@ -125,6 +137,9 @@ class Data; /**
* A weak reference callback function.
*
+ * This callback should either explicitly invoke Dispose on |object| if
+ * V8 wrapper is not needed anymore, or 'revive' it by invocation of MakeWeak.
+ *
* \param object the weak global object to be reclaimed by the garbage collector
* \param parameter the value passed in when making the weak global object
*/
@@ -134,9 +149,9 @@ typedef void (*WeakReferenceCallback)(Persistent<Value> object, // --- H a n d l e s ---
-#define TYPE_CHECK(T, S) \
- while (false) { \
- *(static_cast<T**>(0)) = static_cast<S*>(0); \
+#define TYPE_CHECK(T, S) \
+ while (false) { \
+ *(static_cast<T* volatile*>(0)) = static_cast<S*>(0); \
}
/**
@@ -164,18 +179,18 @@ typedef void (*WeakReferenceCallback)(Persistent<Value> object, * behind the scenes and the same rules apply to these values as to
* their handles.
*/
-template <class T> class EXPORT_INLINE Handle {
+template <class T> class Handle {
public:
/**
* Creates an empty handle.
*/
- Handle();
+ inline Handle();
/**
* Creates a new handle for the specified value.
*/
- explicit Handle(T* val) : val_(val) { }
+ inline explicit Handle(T* val) : val_(val) { }
/**
* Creates a handle for the contents of the specified handle. This
@@ -200,16 +215,16 @@ template <class T> class EXPORT_INLINE Handle { /**
* Returns true if the handle is empty.
*/
- bool IsEmpty() const { return val_ == 0; }
+ inline bool IsEmpty() const { return val_ == 0; }
- T* operator->() const;
+ inline T* operator->() const { return val_; }
- T* operator*() const;
+ inline T* operator*() const { return val_; }
/**
* Sets the handle to be empty. IsEmpty() will then return true.
*/
- void Clear() { this->val_ = 0; }
+ inline void Clear() { this->val_ = 0; }
/**
* Checks whether two handles are the same.
@@ -217,9 +232,9 @@ template <class T> class EXPORT_INLINE Handle { * to which they refer are identical.
* The handles' references are not checked.
*/
- template <class S> bool operator==(Handle<S> that) const {
- void** a = reinterpret_cast<void**>(**this);
- void** b = reinterpret_cast<void**>(*that);
+ template <class S> inline bool operator==(Handle<S> that) const {
+ internal::Object** a = reinterpret_cast<internal::Object**>(**this);
+ internal::Object** b = reinterpret_cast<internal::Object**>(*that);
if (a == 0) return b == 0;
if (b == 0) return false;
return *a == *b;
@@ -231,15 +246,23 @@ template <class T> class EXPORT_INLINE Handle { * the objects to which they refer are different.
* The handles' references are not checked.
*/
- template <class S> bool operator!=(Handle<S> that) const {
+ template <class S> inline bool operator!=(Handle<S> that) const {
return !operator==(that);
}
template <class S> static inline Handle<T> Cast(Handle<S> that) {
+#ifdef V8_ENABLE_CHECKS
+ // If we're going to perform the type check then we have to check
+ // that the handle isn't empty before doing the checked cast.
if (that.IsEmpty()) return Handle<T>();
+#endif
return Handle<T>(T::Cast(*that));
}
+ template <class S> inline Handle<S> As() {
+ return Handle<S>::Cast(*this);
+ }
+
private:
T* val_;
};
@@ -252,9 +275,9 @@ template <class T> class EXPORT_INLINE Handle { * handle scope are destroyed when the handle scope is destroyed. Hence it
* is not necessary to explicitly deallocate local handles.
*/
-template <class T> class EXPORT_INLINE Local : public Handle<T> {
+template <class T> class Local : public Handle<T> {
public:
- Local();
+ inline Local();
template <class S> inline Local(Local<S> that)
: Handle<T>(reinterpret_cast<T*>(*that)) {
/**
@@ -266,15 +289,23 @@ template <class T> class EXPORT_INLINE Local : public Handle<T> { }
template <class S> inline Local(S* that) : Handle<T>(that) { }
template <class S> static inline Local<T> Cast(Local<S> that) {
+#ifdef V8_ENABLE_CHECKS
+ // If we're going to perform the type check then we have to check
+ // that the handle isn't empty before doing the checked cast.
if (that.IsEmpty()) return Local<T>();
+#endif
return Local<T>(T::Cast(*that));
}
+ template <class S> inline Local<S> As() {
+ return Local<S>::Cast(*this);
+ }
+
/** Create a local handle for the content of another handle.
* The referee is kept alive by the local handle even when
* the original handle is destroyed/disposed.
*/
- static Local<T> New(Handle<T> that);
+ inline static Local<T> New(Handle<T> that);
};
@@ -295,14 +326,14 @@ template <class T> class EXPORT_INLINE Local : public Handle<T> { * different storage cells but rather two references to the same
* storage cell.
*/
-template <class T> class EXPORT_INLINE Persistent : public Handle<T> {
+template <class T> class Persistent : public Handle<T> {
public:
/**
* Creates an empty persistent handle that doesn't point to any
* storage cell.
*/
- Persistent();
+ inline Persistent();
/**
* Creates a persistent handle for the same storage cell as the
@@ -335,15 +366,23 @@ template <class T> class EXPORT_INLINE Persistent : public Handle<T> { : Handle<T>(*that) { }
template <class S> static inline Persistent<T> Cast(Persistent<S> that) {
+#ifdef V8_ENABLE_CHECKS
+ // If we're going to perform the type check then we have to check
+ // that the handle isn't empty before doing the checked cast.
if (that.IsEmpty()) return Persistent<T>();
+#endif
return Persistent<T>(T::Cast(*that));
}
+ template <class S> inline Persistent<S> As() {
+ return Persistent<S>::Cast(*this);
+ }
+
/**
* Creates a new persistent handle for an existing local or
* persistent handle.
*/
- static Persistent<T> New(Handle<T> that);
+ inline static Persistent<T> New(Handle<T> that);
/**
* Releases the storage cell referenced by this persistent handle.
@@ -351,7 +390,7 @@ template <class T> class EXPORT_INLINE Persistent : public Handle<T> { * This handle's reference, and any any other references to the storage
* cell remain and IsEmpty will still return false.
*/
- void Dispose();
+ inline void Dispose();
/**
* Make the reference to this object weak. When only weak handles
@@ -359,20 +398,20 @@ template <class T> class EXPORT_INLINE Persistent : public Handle<T> { * callback to the given V8::WeakReferenceCallback function, passing
* it the object reference and the given parameters.
*/
- void MakeWeak(void* parameters, WeakReferenceCallback callback);
+ inline void MakeWeak(void* parameters, WeakReferenceCallback callback);
/** Clears the weak reference to this object.*/
- void ClearWeak();
+ inline void ClearWeak();
/**
*Checks if the handle holds the only reference to an object.
*/
- bool IsNearDeath() const;
+ inline bool IsNearDeath() const;
/**
* Returns true if the handle's reference is weak.
*/
- bool IsWeak() const;
+ inline bool IsWeak() const;
private:
friend class ImplementationUtilities;
@@ -394,21 +433,13 @@ template <class T> class EXPORT_INLINE Persistent : public Handle<T> { * handle and may deallocate it. The behavior of accessing a handle
* for which the handle scope has been deleted is undefined.
*/
-class EXPORT HandleScope {
+class V8EXPORT HandleScope {
public:
- HandleScope() : previous_(current_), is_closed_(false) {
- current_.extensions = 0;
- }
+ HandleScope();
- ~HandleScope() {
- // TODO(1245391): In a perfect world, there would be a way of not
- // having to check for explicitly closed scopes maybe through
- // subclassing HandleScope?
- if (!is_closed_) RestorePreviousState();
- }
+ ~HandleScope();
/**
- * TODO(1245391): Consider introducing a subclass for this.
* Closes the handle scope and returns the value as a handle in the
* previous scope, which is the new current scope after the call.
*/
@@ -422,7 +453,7 @@ class EXPORT HandleScope { /**
* Creates a new handle with the given value.
*/
- static void** CreateHandle(void* value);
+ static internal::Object** CreateHandle(internal::Object* value);
private:
// Make it impossible to create heap-allocated or illegal handle
@@ -432,41 +463,25 @@ class EXPORT HandleScope { void* operator new(size_t size);
void operator delete(void*, size_t);
- class EXPORT Data {
+ // This Data class is accessible internally as HandleScopeData through a
+ // typedef in the ImplementationUtilities class.
+ class V8EXPORT Data {
public:
int extensions;
- void** next;
- void** limit;
+ internal::Object** next;
+ internal::Object** limit;
inline void Initialize() {
extensions = -1;
next = limit = NULL;
}
};
- static Data current_;
- const Data previous_;
-
- /**
- * Re-establishes the previous scope state. Should be called only
- * once, and only for the current scope.
- */
- void RestorePreviousState() {
- if (current_.extensions > 0) DeleteExtensions();
- current_ = previous_;
-#ifdef DEBUG
- ZapRange(current_.next, current_.limit);
-#endif
- }
+ Data previous_;
- // TODO(1245391): Consider creating a subclass for this.
+ // Allow for the active closing of HandleScopes which allows to pass a handle
+ // from the HandleScope being closed to the next top most HandleScope.
bool is_closed_;
- void** RawClose(void** value);
-
- /** Deallocates any extensions used by the current scope.*/
- static void DeleteExtensions();
-
- // Zaps the handles in the half-open interval [start, end).
- static void ZapRange(void** start, void** end);
+ internal::Object** RawClose(internal::Object** value);
friend class ImplementationUtilities;
};
@@ -478,7 +493,7 @@ class EXPORT HandleScope { /**
* The superclass of values and API object templates.
*/
-class EXPORT Data {
+class V8EXPORT Data {
private:
Data();
};
@@ -490,25 +505,64 @@ class EXPORT Data { * compiling it, and can be stored between compilations. When script
* data is given to the compile method compilation will be faster.
*/
-class EXPORT ScriptData { // NOLINT
+class V8EXPORT ScriptData { // NOLINT
public:
virtual ~ScriptData() { }
+
+ /**
+ * Pre-compiles the specified script (context-independent).
+ *
+ * \param input Pointer to UTF-8 script source code.
+ * \param length Length of UTF-8 script source code.
+ */
static ScriptData* PreCompile(const char* input, int length);
- static ScriptData* New(unsigned* data, int length);
+ /**
+ * Pre-compiles the specified script (context-independent).
+ *
+ * NOTE: Pre-compilation using this method cannot happen on another thread
+ * without using Lockers.
+ *
+ * \param source Script source code.
+ */
+ static ScriptData* PreCompile(Handle<String> source);
+
+ /**
+ * Load previous pre-compilation data.
+ *
+ * \param data Pointer to data returned by a call to Data() of a previous
+ * ScriptData. Ownership is not transferred.
+ * \param length Length of data.
+ */
+ static ScriptData* New(const char* data, int length);
+
+ /**
+ * Returns the length of Data().
+ */
virtual int Length() = 0;
- virtual unsigned* Data() = 0;
+
+ /**
+ * Returns a serialized representation of this ScriptData that can later be
+ * passed to New(). NOTE: Serialized data is platform-dependent.
+ */
+ virtual const char* Data() = 0;
+
+ /**
+ * Returns true if the source code could not be parsed.
+ */
+ virtual bool HasError() = 0;
};
/**
* The origin, within a file, of a script.
*/
-class EXPORT ScriptOrigin {
+class ScriptOrigin {
public:
- ScriptOrigin(Handle<Value> resource_name,
- Handle<Integer> resource_line_offset = Handle<Integer>(),
- Handle<Integer> resource_column_offset = Handle<Integer>())
+ inline ScriptOrigin(
+ Handle<Value> resource_name,
+ Handle<Integer> resource_line_offset = Handle<Integer>(),
+ Handle<Integer> resource_column_offset = Handle<Integer>())
: resource_name_(resource_name),
resource_line_offset_(resource_line_offset),
resource_column_offset_(resource_column_offset) { }
@@ -525,43 +579,131 @@ class EXPORT ScriptOrigin { /**
* A compiled JavaScript script.
*/
-class EXPORT Script {
+class V8EXPORT Script {
public:
/**
- * Compiles the specified script. The ScriptOrigin* and ScriptData*
- * parameters are owned by the caller of Script::Compile. No
- * references to these objects are kept after compilation finishes.
+ * Compiles the specified script (context-independent).
+ *
+ * \param source Script source code.
+ * \param origin Script origin, owned by caller, no references are kept
+ * when New() returns
+ * \param pre_data Pre-parsing data, as obtained by ScriptData::PreCompile()
+ * using pre_data speeds compilation if it's done multiple times.
+ * Owned by caller, no references are kept when New() returns.
+ * \param script_data Arbitrary data associated with script. Using
+ * this has same effect as calling SetData(), but allows data to be
+ * available to compile event handlers.
+ * \return Compiled script object (context independent; when run it
+ * will use the currently entered context).
+ */
+ static Local<Script> New(Handle<String> source,
+ ScriptOrigin* origin = NULL,
+ ScriptData* pre_data = NULL,
+ Handle<String> script_data = Handle<String>());
+
+ /**
+ * Compiles the specified script using the specified file name
+ * object (typically a string) as the script's origin.
+ *
+ * \param source Script source code.
+ * \param file_name file name object (typically a string) to be used
+ * as the script's origin.
+ * \return Compiled script object (context independent; when run it
+ * will use the currently entered context).
+ */
+ static Local<Script> New(Handle<String> source,
+ Handle<Value> file_name);
+
+ /**
+ * Compiles the specified script (bound to current context).
+ *
+ * \param source Script source code.
+ * \param origin Script origin, owned by caller, no references are kept
+ * when Compile() returns
+ * \param pre_data Pre-parsing data, as obtained by ScriptData::PreCompile()
+ * using pre_data speeds compilation if it's done multiple times.
+ * Owned by caller, no references are kept when Compile() returns.
+ * \param script_data Arbitrary data associated with script. Using
+ * this has same effect as calling SetData(), but makes data available
+ * earlier (i.e. to compile event handlers).
+ * \return Compiled script object, bound to the context that was active
+ * when this function was called. When run it will always use this
+ * context.
*/
static Local<Script> Compile(Handle<String> source,
ScriptOrigin* origin = NULL,
- ScriptData* pre_data = NULL);
+ ScriptData* pre_data = NULL,
+ Handle<String> script_data = Handle<String>());
/**
* Compiles the specified script using the specified file name
* object (typically a string) as the script's origin.
+ *
+ * \param source Script source code.
+ * \param file_name File name to use as script's origin
+ * \param script_data Arbitrary data associated with script. Using
+ * this has same effect as calling SetData(), but makes data available
+ * earlier (i.e. to compile event handlers).
+ * \return Compiled script object, bound to the context that was active
+ * when this function was called. When run it will always use this
+ * context.
*/
static Local<Script> Compile(Handle<String> source,
- Handle<Value> file_name);
+ Handle<Value> file_name,
+ Handle<String> script_data = Handle<String>());
/**
- * Runs the script returning the resulting value.
+ * Runs the script returning the resulting value. If the script is
+ * context independent (created using ::New) it will be run in the
+ * currently entered context. If it is context specific (created
+ * using ::Compile) it will be run in the context in which it was
+ * compiled.
*/
Local<Value> Run();
+
+ /**
+ * Returns the script id value.
+ */
+ Local<Value> Id();
+
+ /**
+ * Associate an additional data object with the script. This is mainly used
+ * with the debugger as this data object is only available through the
+ * debugger API.
+ */
+ void SetData(Handle<String> data);
};
/**
* An error message.
*/
-class EXPORT Message {
+class V8EXPORT Message {
public:
Local<String> Get() const;
Local<String> GetSourceLine() const;
+ /**
+ * Returns the resource name for the script from where the function causing
+ * the error originates.
+ */
Handle<Value> GetScriptResourceName() const;
/**
+ * Returns the resource data for the script from where the function causing
+ * the error originates.
+ */
+ Handle<Value> GetScriptData() const;
+
+ /**
+ * Exception stack trace. By default stack traces are not captured for
+ * uncaught exceptions. SetCaptureStackTraceForUncaughtExceptions allows
+ * to change this option.
+ */
+ Handle<StackTrace> GetStackTrace() const;
+
+ /**
* Returns the number, 1-based, of the line where the error occurred.
*/
int GetLineNumber() const;
@@ -592,6 +734,106 @@ class EXPORT Message { // TODO(1245381): Print to a string instead of on a FILE.
static void PrintCurrentStackTrace(FILE* out);
+
+ static const int kNoLineNumberInfo = 0;
+ static const int kNoColumnInfo = 0;
+};
+
+
+/**
+ * Representation of a JavaScript stack trace. The information collected is a
+ * snapshot of the execution stack and the information remains valid after
+ * execution continues.
+ */
+class V8EXPORT StackTrace {
+ public:
+ /**
+ * Flags that determine what information is placed captured for each
+ * StackFrame when grabbing the current stack trace.
+ */
+ enum StackTraceOptions {
+ kLineNumber = 1,
+ kColumnOffset = 1 << 1 | kLineNumber,
+ kScriptName = 1 << 2,
+ kFunctionName = 1 << 3,
+ kIsEval = 1 << 4,
+ kIsConstructor = 1 << 5,
+ kOverview = kLineNumber | kColumnOffset | kScriptName | kFunctionName,
+ kDetailed = kOverview | kIsEval | kIsConstructor
+ };
+
+ /**
+ * Returns a StackFrame at a particular index.
+ */
+ Local<StackFrame> GetFrame(uint32_t index) const;
+
+ /**
+ * Returns the number of StackFrames.
+ */
+ int GetFrameCount() const;
+
+ /**
+ * Returns StackTrace as a v8::Array that contains StackFrame objects.
+ */
+ Local<Array> AsArray();
+
+ /**
+ * Grab a snapshot of the the current JavaScript execution stack.
+ *
+ * \param frame_limit The maximum number of stack frames we want to capture.
+ * \param options Enumerates the set of things we will capture for each
+ * StackFrame.
+ */
+ static Local<StackTrace> CurrentStackTrace(
+ int frame_limit,
+ StackTraceOptions options = kOverview);
+};
+
+
+/**
+ * A single JavaScript stack frame.
+ */
+class V8EXPORT StackFrame {
+ public:
+ /**
+ * Returns the number, 1-based, of the line for the associate function call.
+ * This method will return Message::kNoLineNumberInfo if it is unable to
+ * retrieve the line number, or if kLineNumber was not passed as an option
+ * when capturing the StackTrace.
+ */
+ int GetLineNumber() const;
+
+ /**
+ * Returns the 1-based column offset on the line for the associated function
+ * call.
+ * This method will return Message::kNoColumnInfo if it is unable to retrieve
+ * the column number, or if kColumnOffset was not passed as an option when
+ * capturing the StackTrace.
+ */
+ int GetColumn() const;
+
+ /**
+ * Returns the name of the resource that contains the script for the
+ * function for this StackFrame.
+ */
+ Local<String> GetScriptName() const;
+
+ /**
+ * Returns the name of the function associated with this stack frame.
+ */
+ Local<String> GetFunctionName() const;
+
+ /**
+ * Returns whether or not the associated function is compiled via a call to
+ * eval().
+ */
+ bool IsEval() const;
+
+ /**
+ * Returns whther or not the associated function is called as a
+ * constructor via "new".
+ */
+ bool IsConstructor() const;
};
@@ -601,117 +843,131 @@ class EXPORT Message { /**
* The superclass of all JavaScript values and objects.
*/
-class EXPORT Value : public Data {
+class Value : public Data {
public:
/**
* Returns true if this value is the undefined value. See ECMA-262
* 4.3.10.
*/
- bool IsUndefined() const;
+ V8EXPORT bool IsUndefined() const;
/**
* Returns true if this value is the null value. See ECMA-262
* 4.3.11.
*/
- bool IsNull() const;
+ V8EXPORT bool IsNull() const;
/**
* Returns true if this value is true.
*/
- bool IsTrue() const;
+ V8EXPORT bool IsTrue() const;
/**
* Returns true if this value is false.
*/
- bool IsFalse() const;
+ V8EXPORT bool IsFalse() const;
/**
* Returns true if this value is an instance of the String type.
* See ECMA-262 8.4.
*/
- bool IsString() const;
+ inline bool IsString() const;
/**
* Returns true if this value is a function.
*/
- bool IsFunction() const;
+ V8EXPORT bool IsFunction() const;
/**
* Returns true if this value is an array.
*/
- bool IsArray() const;
+ V8EXPORT bool IsArray() const;
/**
* Returns true if this value is an object.
*/
- bool IsObject() const;
+ V8EXPORT bool IsObject() const;
/**
* Returns true if this value is boolean.
*/
- bool IsBoolean() const;
+ V8EXPORT bool IsBoolean() const;
/**
* Returns true if this value is a number.
*/
- bool IsNumber() const;
+ V8EXPORT bool IsNumber() const;
/**
* Returns true if this value is external.
*/
- bool IsExternal() const;
+ V8EXPORT bool IsExternal() const;
/**
* Returns true if this value is a 32-bit signed integer.
*/
- bool IsInt32() const;
+ V8EXPORT bool IsInt32() const;
+
+ /**
+ * Returns true if this value is a 32-bit unsigned integer.
+ */
+ V8EXPORT bool IsUint32() const;
/**
* Returns true if this value is a Date.
*/
- bool IsDate() const;
+ V8EXPORT bool IsDate() const;
- Local<Boolean> ToBoolean() const;
- Local<Number> ToNumber() const;
- Local<String> ToString() const;
- Local<String> ToDetailString() const;
- Local<Object> ToObject() const;
- Local<Integer> ToInteger() const;
- Local<Uint32> ToUint32() const;
- Local<Int32> ToInt32() const;
+ /**
+ * Returns true if this value is a RegExp.
+ */
+ V8EXPORT bool IsRegExp() const;
+
+ V8EXPORT Local<Boolean> ToBoolean() const;
+ V8EXPORT Local<Number> ToNumber() const;
+ V8EXPORT Local<String> ToString() const;
+ V8EXPORT Local<String> ToDetailString() const;
+ V8EXPORT Local<Object> ToObject() const;
+ V8EXPORT Local<Integer> ToInteger() const;
+ V8EXPORT Local<Uint32> ToUint32() const;
+ V8EXPORT Local<Int32> ToInt32() const;
/**
* Attempts to convert a string to an array index.
* Returns an empty handle if the conversion fails.
*/
- Local<Uint32> ToArrayIndex() const;
+ V8EXPORT Local<Uint32> ToArrayIndex() const;
- bool BooleanValue() const;
- double NumberValue() const;
- int64_t IntegerValue() const;
- uint32_t Uint32Value() const;
- int32_t Int32Value() const;
+ V8EXPORT bool BooleanValue() const;
+ V8EXPORT double NumberValue() const;
+ V8EXPORT int64_t IntegerValue() const;
+ V8EXPORT uint32_t Uint32Value() const;
+ V8EXPORT int32_t Int32Value() const;
/** JS == */
- bool Equals(Handle<Value> that) const;
- bool StrictEquals(Handle<Value> that) const;
+ V8EXPORT bool Equals(Handle<Value> that) const;
+ V8EXPORT bool StrictEquals(Handle<Value> that) const;
+
+ private:
+ inline bool QuickIsString() const;
+ V8EXPORT bool FullIsString() const;
};
/**
* The superclass of primitive values. See ECMA-262 4.3.2.
*/
-class EXPORT Primitive : public Value { };
+class Primitive : public Value { };
/**
* A primitive boolean value (ECMA-262, 4.3.14). Either the true
* or false value.
*/
-class EXPORT Boolean : public Primitive {
+class Boolean : public Primitive {
public:
- bool Value() const;
+ V8EXPORT bool Value() const;
static inline Handle<Boolean> New(bool value);
};
@@ -719,19 +975,19 @@ class EXPORT Boolean : public Primitive { /**
* A JavaScript string value (ECMA-262, 4.3.17).
*/
-class EXPORT String : public Primitive {
+class String : public Primitive {
public:
/**
* Returns the number of characters in this string.
*/
- int Length() const;
+ V8EXPORT int Length() const;
/**
* Returns the number of bytes in the UTF-8 encoded
* representation of this string.
*/
- int Utf8Length() const;
+ V8EXPORT int Utf8Length() const;
/**
* Write the contents of the string to an external buffer.
@@ -747,45 +1003,95 @@ class EXPORT String : public Primitive { * \param start The starting position within the string at which
* copying begins.
* \param length The number of bytes to copy from the string.
- * \return The number of characters copied to the buffer
+ * \param nchars_ref The number of characters written, can be NULL.
+ * \param hints Various hints that might affect performance of this or
+ * subsequent operations.
+ * \return The number of bytes copied to the buffer
* excluding the NULL terminator.
*/
- int Write(uint16_t* buffer, int start = 0, int length = -1) const; // UTF-16
- int WriteAscii(char* buffer, int start = 0, int length = -1) const; // ASCII
- int WriteUtf8(char* buffer, int length = -1) const; // UTF-8
+ enum WriteHints {
+ NO_HINTS = 0,
+ HINT_MANY_WRITES_EXPECTED = 1
+ };
+
+ V8EXPORT int Write(uint16_t* buffer,
+ int start = 0,
+ int length = -1,
+ WriteHints hints = NO_HINTS) const; // UTF-16
+ V8EXPORT int WriteAscii(char* buffer,
+ int start = 0,
+ int length = -1,
+ WriteHints hints = NO_HINTS) const; // ASCII
+ V8EXPORT int WriteUtf8(char* buffer,
+ int length = -1,
+ int* nchars_ref = NULL,
+ WriteHints hints = NO_HINTS) const; // UTF-8
+
+ /**
+ * A zero length string.
+ */
+ V8EXPORT static v8::Local<v8::String> Empty();
/**
* Returns true if the string is external
*/
- bool IsExternal() const;
+ V8EXPORT bool IsExternal() const;
/**
* Returns true if the string is both external and ascii
*/
- bool IsExternalAscii() const;
+ V8EXPORT bool IsExternalAscii() const;
+
+ class V8EXPORT ExternalStringResourceBase {
+ public:
+ virtual ~ExternalStringResourceBase() {}
+
+ protected:
+ ExternalStringResourceBase() {}
+
+ /**
+ * Internally V8 will call this Dispose method when the external string
+ * resource is no longer needed. The default implementation will use the
+ * delete operator. This method can be overridden in subclasses to
+ * control how allocated external string resources are disposed.
+ */
+ virtual void Dispose() { delete this; }
+
+ private:
+ // Disallow copying and assigning.
+ ExternalStringResourceBase(const ExternalStringResourceBase&);
+ void operator=(const ExternalStringResourceBase&);
+
+ friend class v8::internal::Heap;
+ };
+
/**
* An ExternalStringResource is a wrapper around a two-byte string
* buffer that resides outside V8's heap. Implement an
* ExternalStringResource to manage the life cycle of the underlying
* buffer. Note that the string data must be immutable.
*/
- class EXPORT ExternalStringResource { // NOLINT
+ class V8EXPORT ExternalStringResource
+ : public ExternalStringResourceBase {
public:
/**
* Override the destructor to manage the life cycle of the underlying
* buffer.
*/
virtual ~ExternalStringResource() {}
- /** The string data from the underlying buffer.*/
+
+ /**
+ * The string data from the underlying buffer.
+ */
virtual const uint16_t* data() const = 0;
- /** The length of the string. That is, the number of two-byte characters.*/
+
+ /**
+ * The length of the string. That is, the number of two-byte characters.
+ */
virtual size_t length() const = 0;
+
protected:
ExternalStringResource() {}
- private:
- // Disallow copying and assigning.
- ExternalStringResource(const ExternalStringResource&);
- void operator=(const ExternalStringResource&);
};
/**
@@ -799,7 +1105,8 @@ class EXPORT String : public Primitive { * Use String::New or convert to 16 bit data for non-ASCII.
*/
- class EXPORT ExternalAsciiStringResource { // NOLINT
+ class V8EXPORT ExternalAsciiStringResource
+ : public ExternalStringResourceBase {
public:
/**
* Override the destructor to manage the life cycle of the underlying
@@ -812,25 +1119,21 @@ class EXPORT String : public Primitive { virtual size_t length() const = 0;
protected:
ExternalAsciiStringResource() {}
- private:
- // Disallow copying and assigning.
- ExternalAsciiStringResource(const ExternalAsciiStringResource&);
- void operator=(const ExternalAsciiStringResource&);
};
/**
- * Get the ExternalStringResource for an external string. Only
- * valid if IsExternal() returns true.
+ * Get the ExternalStringResource for an external string. Returns
+ * NULL if IsExternal() doesn't return true.
*/
- ExternalStringResource* GetExternalStringResource() const;
+ inline ExternalStringResource* GetExternalStringResource() const;
/**
* Get the ExternalAsciiStringResource for an external ascii string.
- * Only valid if IsExternalAscii() returns true.
+ * Returns NULL if IsExternalAscii() doesn't return true.
*/
- ExternalAsciiStringResource* GetExternalAsciiStringResource() const;
+ V8EXPORT ExternalAsciiStringResource* GetExternalAsciiStringResource() const;
- static String* Cast(v8::Value* obj);
+ static inline String* Cast(v8::Value* obj);
/**
* Allocates a new string from either utf-8 encoded or ascii data.
@@ -841,50 +1144,91 @@ class EXPORT String : public Primitive { * 'strlen' to determine the buffer length, it might be
* wrong if 'data' contains a null character.
*/
- static Local<String> New(const char* data, int length = -1);
+ V8EXPORT static Local<String> New(const char* data, int length = -1);
/** Allocates a new string from utf16 data.*/
- static Local<String> New(const uint16_t* data, int length = -1);
+ V8EXPORT static Local<String> New(const uint16_t* data, int length = -1);
/** Creates a symbol. Returns one if it exists already.*/
- static Local<String> NewSymbol(const char* data, int length = -1);
+ V8EXPORT static Local<String> NewSymbol(const char* data, int length = -1);
+
+ /**
+ * Creates a new string by concatenating the left and the right strings
+ * passed in as parameters.
+ */
+ V8EXPORT static Local<String> Concat(Handle<String> left,
+ Handle<String>right);
/**
* Creates a new external string using the data defined in the given
- * resource. The resource is deleted when the external string is no
- * longer live on V8's heap. The caller of this function should not
- * delete or modify the resource. Neither should the underlying buffer be
- * deallocated or modified except through the destructor of the
- * external string resource.
+ * resource. When the external string is no longer live on V8's heap the
+ * resource will be disposed by calling its Dispose method. The caller of
+ * this function should not otherwise delete or modify the resource. Neither
+ * should the underlying buffer be deallocated or modified except through the
+ * destructor of the external string resource.
*/
- static Local<String> NewExternal(ExternalStringResource* resource);
+ V8EXPORT static Local<String> NewExternal(ExternalStringResource* resource);
+
+ /**
+ * Associate an external string resource with this string by transforming it
+ * in place so that existing references to this string in the JavaScript heap
+ * will use the external string resource. The external string resource's
+ * character contents needs to be equivalent to this string.
+ * Returns true if the string has been changed to be an external string.
+ * The string is not modified if the operation fails. See NewExternal for
+ * information on the lifetime of the resource.
+ */
+ V8EXPORT bool MakeExternal(ExternalStringResource* resource);
/**
* Creates a new external string using the ascii data defined in the given
- * resource. The resource is deleted when the external string is no
- * longer live on V8's heap. The caller of this function should not
- * delete or modify the resource. Neither should the underlying buffer be
- * deallocated or modified except through the destructor of the
- * external string resource.
+ * resource. When the external string is no longer live on V8's heap the
+ * resource will be disposed by calling its Dispose method. The caller of
+ * this function should not otherwise delete or modify the resource. Neither
+ * should the underlying buffer be deallocated or modified except through the
+ * destructor of the external string resource.
*/
- static Local<String> NewExternal(ExternalAsciiStringResource* resource);
+ V8EXPORT static Local<String> NewExternal(
+ ExternalAsciiStringResource* resource);
+
+ /**
+ * Associate an external string resource with this string by transforming it
+ * in place so that existing references to this string in the JavaScript heap
+ * will use the external string resource. The external string resource's
+ * character contents needs to be equivalent to this string.
+ * Returns true if the string has been changed to be an external string.
+ * The string is not modified if the operation fails. See NewExternal for
+ * information on the lifetime of the resource.
+ */
+ V8EXPORT bool MakeExternal(ExternalAsciiStringResource* resource);
+
+ /**
+ * Returns true if this string can be made external.
+ */
+ V8EXPORT bool CanMakeExternal();
/** Creates an undetectable string from the supplied ascii or utf-8 data.*/
- static Local<String> NewUndetectable(const char* data, int length = -1);
+ V8EXPORT static Local<String> NewUndetectable(const char* data,
+ int length = -1);
/** Creates an undetectable string from the supplied utf-16 data.*/
- static Local<String> NewUndetectable(const uint16_t* data, int length = -1);
+ V8EXPORT static Local<String> NewUndetectable(const uint16_t* data,
+ int length = -1);
/**
* Converts an object to a utf8-encoded character array. Useful if
- * you want to print the object.
+ * you want to print the object. If conversion to a string fails
+ * (eg. due to an exception in the toString() method of the object)
+ * then the length() method returns 0 and the * operator returns
+ * NULL.
*/
- class EXPORT Utf8Value {
+ class V8EXPORT Utf8Value {
public:
explicit Utf8Value(Handle<v8::Value> obj);
~Utf8Value();
char* operator*() { return str_; }
- int length() { return length_; }
+ const char* operator*() const { return str_; }
+ int length() const { return length_; }
private:
char* str_;
int length_;
@@ -897,13 +1241,17 @@ class EXPORT String : public Primitive { /**
* Converts an object to an ascii string.
* Useful if you want to print the object.
+ * If conversion to a string fails (eg. due to an exception in the toString()
+ * method of the object) then the length() method returns 0 and the * operator
+ * returns NULL.
*/
- class EXPORT AsciiValue {
+ class V8EXPORT AsciiValue {
public:
explicit AsciiValue(Handle<v8::Value> obj);
~AsciiValue();
char* operator*() { return str_; }
- int length() { return length_; }
+ const char* operator*() const { return str_; }
+ int length() const { return length_; }
private:
char* str_;
int length_;
@@ -915,13 +1263,17 @@ class EXPORT String : public Primitive { /**
* Converts an object to a two-byte string.
+ * If conversion to a string fails (eg. due to an exception in the toString()
+ * method of the object) then the length() method returns 0 and the * operator
+ * returns NULL.
*/
- class EXPORT Value {
+ class V8EXPORT Value {
public:
explicit Value(Handle<v8::Value> obj);
~Value();
uint16_t* operator*() { return str_; }
- int length() { return length_; }
+ const uint16_t* operator*() const { return str_; }
+ int length() const { return length_; }
private:
uint16_t* str_;
int length_;
@@ -930,71 +1282,80 @@ class EXPORT String : public Primitive { Value(const Value&);
void operator=(const Value&);
};
+
+ private:
+ V8EXPORT void VerifyExternalStringResource(ExternalStringResource* val) const;
+ V8EXPORT static void CheckCast(v8::Value* obj);
};
/**
* A JavaScript number value (ECMA-262, 4.3.20)
*/
-class EXPORT Number : public Primitive {
+class Number : public Primitive {
public:
- double Value() const;
- static Local<Number> New(double value);
- static Number* Cast(v8::Value* obj);
+ V8EXPORT double Value() const;
+ V8EXPORT static Local<Number> New(double value);
+ static inline Number* Cast(v8::Value* obj);
private:
- Number();
+ V8EXPORT Number();
+ static void CheckCast(v8::Value* obj);
};
/**
* A JavaScript value representing a signed integer.
*/
-class EXPORT Integer : public Number {
+class Integer : public Number {
public:
- static Local<Integer> New(int32_t value);
- int64_t Value() const;
- static Integer* Cast(v8::Value* obj);
+ V8EXPORT static Local<Integer> New(int32_t value);
+ V8EXPORT static Local<Integer> NewFromUnsigned(uint32_t value);
+ V8EXPORT int64_t Value() const;
+ static inline Integer* Cast(v8::Value* obj);
private:
- Integer();
+ V8EXPORT Integer();
+ V8EXPORT static void CheckCast(v8::Value* obj);
};
/**
* A JavaScript value representing a 32-bit signed integer.
*/
-class EXPORT Int32 : public Integer {
+class Int32 : public Integer {
public:
- int32_t Value() const;
+ V8EXPORT int32_t Value() const;
private:
- Int32();
+ V8EXPORT Int32();
};
/**
* A JavaScript value representing a 32-bit unsigned integer.
*/
-class EXPORT Uint32 : public Integer {
+class Uint32 : public Integer {
public:
- uint32_t Value() const;
+ V8EXPORT uint32_t Value() const;
private:
- Uint32();
+ V8EXPORT Uint32();
};
/**
* An instance of the built-in Date constructor (ECMA-262, 15.9).
*/
-class EXPORT Date : public Value {
+class Date : public Value {
public:
- static Local<Value> New(double time);
+ V8EXPORT static Local<Value> New(double time);
/**
* A specialization of Value::NumberValue that is more efficient
* because we know the structure of this object.
*/
- double NumberValue() const;
+ V8EXPORT double NumberValue() const;
- static Date* Cast(v8::Value* obj);
+ static inline Date* Cast(v8::Value* obj);
+ private:
+ V8EXPORT static void CheckCast(v8::Value* obj);
};
@@ -1005,22 +1366,99 @@ enum PropertyAttribute { DontDelete = 1 << 2
};
+enum ExternalArrayType {
+ kExternalByteArray = 1,
+ kExternalUnsignedByteArray,
+ kExternalShortArray,
+ kExternalUnsignedShortArray,
+ kExternalIntArray,
+ kExternalUnsignedIntArray,
+ kExternalFloatArray
+};
+
+/**
+ * Accessor[Getter|Setter] are used as callback functions when
+ * setting|getting a particular property. See Object and ObjectTemplate's
+ * method SetAccessor.
+ */
+typedef Handle<Value> (*AccessorGetter)(Local<String> property,
+ const AccessorInfo& info);
+
+
+typedef void (*AccessorSetter)(Local<String> property,
+ Local<Value> value,
+ const AccessorInfo& info);
+
+
+/**
+ * Access control specifications.
+ *
+ * Some accessors should be accessible across contexts. These
+ * accessors have an explicit access control parameter which specifies
+ * the kind of cross-context access that should be allowed.
+ *
+ * Additionally, for security, accessors can prohibit overwriting by
+ * accessors defined in JavaScript. For objects that have such
+ * accessors either locally or in their prototype chain it is not
+ * possible to overwrite the accessor by using __defineGetter__ or
+ * __defineSetter__ from JavaScript code.
+ */
+enum AccessControl {
+ DEFAULT = 0,
+ ALL_CAN_READ = 1,
+ ALL_CAN_WRITE = 1 << 1,
+ PROHIBITS_OVERWRITING = 1 << 2
+};
+
+
/**
* A JavaScript object (ECMA-262, 4.3.3)
*/
-class EXPORT Object : public Value {
+class Object : public Value {
public:
- bool Set(Handle<Value> key,
- Handle<Value> value,
- PropertyAttribute attribs = None);
- Local<Value> Get(Handle<Value> key);
+ V8EXPORT bool Set(Handle<Value> key,
+ Handle<Value> value,
+ PropertyAttribute attribs = None);
+
+ V8EXPORT bool Set(uint32_t index,
+ Handle<Value> value);
+
+ // Sets a local property on this object bypassing interceptors and
+ // overriding accessors or read-only properties.
+ //
+ // Note that if the object has an interceptor the property will be set
+ // locally, but since the interceptor takes precedence the local property
+ // will only be returned if the interceptor doesn't return a value.
+ //
+ // Note also that this only works for named properties.
+ V8EXPORT bool ForceSet(Handle<Value> key,
+ Handle<Value> value,
+ PropertyAttribute attribs = None);
+
+ V8EXPORT Local<Value> Get(Handle<Value> key);
+
+ V8EXPORT Local<Value> Get(uint32_t index);
// TODO(1245389): Replace the type-specific versions of these
// functions with generic ones that accept a Handle<Value> key.
- bool Has(Handle<String> key);
- bool Delete(Handle<String> key);
- bool Has(uint32_t index);
- bool Delete(uint32_t index);
+ V8EXPORT bool Has(Handle<String> key);
+
+ V8EXPORT bool Delete(Handle<String> key);
+
+ // Delete a property on this object bypassing interceptors and
+ // ignoring dont-delete attributes.
+ V8EXPORT bool ForceDelete(Handle<Value> key);
+
+ V8EXPORT bool Has(uint32_t index);
+
+ V8EXPORT bool Delete(uint32_t index);
+
+ V8EXPORT bool SetAccessor(Handle<String> name,
+ AccessorGetter getter,
+ AccessorSetter setter = 0,
+ Handle<Value> data = Handle<Value>(),
+ AccessControl settings = DEFAULT,
+ PropertyAttribute attribute = None);
/**
* Returns an array containing the names of the enumerable properties
@@ -1028,102 +1466,231 @@ class EXPORT Object : public Value { * array returned by this method contains the same values as would
* be enumerated by a for-in statement over this object.
*/
- Local<Array> GetPropertyNames();
+ V8EXPORT Local<Array> GetPropertyNames();
/**
* Get the prototype object. This does not skip objects marked to
* be skipped by __proto__ and it does not consult the security
* handler.
*/
- Local<Value> GetPrototype();
+ V8EXPORT Local<Value> GetPrototype();
+
+ /**
+ * Set the prototype object. This does not skip objects marked to
+ * be skipped by __proto__ and it does not consult the security
+ * handler.
+ */
+ V8EXPORT bool SetPrototype(Handle<Value> prototype);
+
+ /**
+ * Finds an instance of the given function template in the prototype
+ * chain.
+ */
+ V8EXPORT Local<Object> FindInstanceInPrototypeChain(
+ Handle<FunctionTemplate> tmpl);
/**
* Call builtin Object.prototype.toString on this object.
* This is different from Value::ToString() that may call
* user-defined toString function. This one does not.
*/
- Local<String> ObjectProtoToString();
+ V8EXPORT Local<String> ObjectProtoToString();
/** Gets the number of internal fields for this Object. */
- int InternalFieldCount();
+ V8EXPORT int InternalFieldCount();
/** Gets the value in an internal field. */
- Local<Value> GetInternalField(int index);
+ inline Local<Value> GetInternalField(int index);
/** Sets the value in an internal field. */
- void SetInternalField(int index, Handle<Value> value);
+ V8EXPORT void SetInternalField(int index, Handle<Value> value);
+
+ /** Gets a native pointer from an internal field. */
+ inline void* GetPointerFromInternalField(int index);
+
+ /** Sets a native pointer in an internal field. */
+ V8EXPORT void SetPointerInInternalField(int index, void* value);
// Testers for local properties.
- bool HasRealNamedProperty(Handle<String> key);
- bool HasRealIndexedProperty(uint32_t index);
- bool HasRealNamedCallbackProperty(Handle<String> key);
+ V8EXPORT bool HasRealNamedProperty(Handle<String> key);
+ V8EXPORT bool HasRealIndexedProperty(uint32_t index);
+ V8EXPORT bool HasRealNamedCallbackProperty(Handle<String> key);
/**
* If result.IsEmpty() no real property was located in the prototype chain.
* This means interceptors in the prototype chain are not called.
*/
- Handle<Value> GetRealNamedPropertyInPrototypeChain(Handle<String> key);
+ V8EXPORT Local<Value> GetRealNamedPropertyInPrototypeChain(
+ Handle<String> key);
+
+ /**
+ * If result.IsEmpty() no real property was located on the object or
+ * in the prototype chain.
+ * This means interceptors in the prototype chain are not called.
+ */
+ V8EXPORT Local<Value> GetRealNamedProperty(Handle<String> key);
/** Tests for a named lookup interceptor.*/
- bool HasNamedLookupInterceptor();
+ V8EXPORT bool HasNamedLookupInterceptor();
/** Tests for an index lookup interceptor.*/
- bool HasIndexedLookupInterceptor();
+ V8EXPORT bool HasIndexedLookupInterceptor();
/**
* Turns on access check on the object if the object is an instance of
* a template that has access check callbacks. If an object has no
* access check info, the object cannot be accessed by anyone.
*/
- void TurnOnAccessCheck();
+ V8EXPORT void TurnOnAccessCheck();
- static Local<Object> New();
- static Object* Cast(Value* obj);
+ /**
+ * Returns the identity hash for this object. The current implemenation uses
+ * a hidden property on the object to store the identity hash.
+ *
+ * The return value will never be 0. Also, it is not guaranteed to be
+ * unique.
+ */
+ V8EXPORT int GetIdentityHash();
+
+ /**
+ * Access hidden properties on JavaScript objects. These properties are
+ * hidden from the executing JavaScript and only accessible through the V8
+ * C++ API. Hidden properties introduced by V8 internally (for example the
+ * identity hash) are prefixed with "v8::".
+ */
+ V8EXPORT bool SetHiddenValue(Handle<String> key, Handle<Value> value);
+ V8EXPORT Local<Value> GetHiddenValue(Handle<String> key);
+ V8EXPORT bool DeleteHiddenValue(Handle<String> key);
+
+ /**
+ * Returns true if this is an instance of an api function (one
+ * created from a function created from a function template) and has
+ * been modified since it was created. Note that this method is
+ * conservative and may return true for objects that haven't actually
+ * been modified.
+ */
+ V8EXPORT bool IsDirty();
+
+ /**
+ * Clone this object with a fast but shallow copy. Values will point
+ * to the same values as the original object.
+ */
+ V8EXPORT Local<Object> Clone();
+
+ /**
+ * Set the backing store of the indexed properties to be managed by the
+ * embedding layer. Access to the indexed properties will follow the rules
+ * spelled out in CanvasPixelArray.
+ * Note: The embedding program still owns the data and needs to ensure that
+ * the backing store is preserved while V8 has a reference.
+ */
+ V8EXPORT void SetIndexedPropertiesToPixelData(uint8_t* data, int length);
+ bool HasIndexedPropertiesInPixelData();
+ uint8_t* GetIndexedPropertiesPixelData();
+ int GetIndexedPropertiesPixelDataLength();
+
+ /**
+ * Set the backing store of the indexed properties to be managed by the
+ * embedding layer. Access to the indexed properties will follow the rules
+ * spelled out for the CanvasArray subtypes in the WebGL specification.
+ * Note: The embedding program still owns the data and needs to ensure that
+ * the backing store is preserved while V8 has a reference.
+ */
+ V8EXPORT void SetIndexedPropertiesToExternalArrayData(
+ void* data,
+ ExternalArrayType array_type,
+ int number_of_elements);
+ bool HasIndexedPropertiesInExternalArrayData();
+ void* GetIndexedPropertiesExternalArrayData();
+ ExternalArrayType GetIndexedPropertiesExternalArrayDataType();
+ int GetIndexedPropertiesExternalArrayDataLength();
+
+ V8EXPORT static Local<Object> New();
+ static inline Object* Cast(Value* obj);
private:
- Object();
+ V8EXPORT Object();
+ V8EXPORT static void CheckCast(Value* obj);
+ V8EXPORT Local<Value> CheckedGetInternalField(int index);
+ V8EXPORT void* SlowGetPointerFromInternalField(int index);
+
+ /**
+ * If quick access to the internal field is possible this method
+ * returns the value. Otherwise an empty handle is returned.
+ */
+ inline Local<Value> UncheckedGetInternalField(int index);
};
/**
* An instance of the built-in array constructor (ECMA-262, 15.4.2).
*/
-class EXPORT Array : public Object {
+class Array : public Object {
public:
- uint32_t Length() const;
+ V8EXPORT uint32_t Length() const;
+
+ /**
+ * Clones an element at index |index|. Returns an empty
+ * handle if cloning fails (for any reason).
+ */
+ V8EXPORT Local<Object> CloneElementAt(uint32_t index);
- static Local<Array> New(int length = 0);
- static Array* Cast(Value* obj);
+ V8EXPORT static Local<Array> New(int length = 0);
+ static inline Array* Cast(Value* obj);
private:
- Array();
+ V8EXPORT Array();
+ static void CheckCast(Value* obj);
};
/**
* A JavaScript function object (ECMA-262, 15.3).
*/
-class EXPORT Function : public Object {
+class Function : public Object {
public:
- Local<Object> NewInstance() const;
- Local<Object> NewInstance(int argc, Handle<Value> argv[]) const;
- Local<Value> Call(Handle<Object> recv, int argc, Handle<Value> argv[]);
- void SetName(Handle<String> name);
- Handle<Value> GetName() const;
- static Function* Cast(Value* obj);
+ V8EXPORT Local<Object> NewInstance() const;
+ V8EXPORT Local<Object> NewInstance(int argc, Handle<Value> argv[]) const;
+ V8EXPORT Local<Value> Call(Handle<Object> recv,
+ int argc,
+ Handle<Value> argv[]);
+ V8EXPORT void SetName(Handle<String> name);
+ V8EXPORT Handle<Value> GetName() const;
+
+ /**
+ * Returns zero based line number of function body and
+ * kLineOffsetNotFound if no information available.
+ */
+ V8EXPORT int GetScriptLineNumber() const;
+ V8EXPORT ScriptOrigin GetScriptOrigin() const;
+ static inline Function* Cast(Value* obj);
+ V8EXPORT static const int kLineOffsetNotFound;
private:
- Function();
+ V8EXPORT Function();
+ V8EXPORT static void CheckCast(Value* obj);
};
/**
- * A JavaScript value that wraps a c++ void*. This type of value is
- * mainly used to associate c++ data structures with JavaScript
+ * A JavaScript value that wraps a C++ void*. This type of value is
+ * mainly used to associate C++ data structures with JavaScript
* objects.
+ *
+ * The Wrap function V8 will return the most optimal Value object wrapping the
+ * C++ void*. The type of the value is not guaranteed to be an External object
+ * and no assumptions about its type should be made. To access the wrapped
+ * value Unwrap should be used, all other operations on that object will lead
+ * to unpredictable results.
*/
-class EXPORT External : public Value {
+class External : public Value {
public:
- static Local<External> New(void* value);
- static External* Cast(Value* obj);
- void* Value() const;
+ V8EXPORT static Local<Value> Wrap(void* data);
+ static inline void* Unwrap(Handle<Value> obj);
+
+ V8EXPORT static Local<External> New(void* value);
+ static inline External* Cast(Value* obj);
+ V8EXPORT void* Value() const;
private:
- External();
+ V8EXPORT External();
+ V8EXPORT static void CheckCast(v8::Value* obj);
+ static inline void* QuickUnwrap(Handle<v8::Value> obj);
+ V8EXPORT static void* FullUnwrap(Handle<v8::Value> obj);
};
@@ -1133,7 +1700,7 @@ class EXPORT External : public Value { /**
* The superclass of object and function templates.
*/
-class EXPORT Template : public Data {
+class V8EXPORT Template : public Data {
public:
/** Adds a property to each instance created by this template.*/
void Set(Handle<String> name, Handle<Data> value,
@@ -1153,7 +1720,7 @@ class EXPORT Template : public Data { * including the receiver, the number and values of arguments, and
* the holder of the function.
*/
-class EXPORT Arguments {
+class Arguments {
public:
inline int Length() const;
inline Local<Value> operator[](int i) const;
@@ -1163,7 +1730,6 @@ class EXPORT Arguments { inline bool IsConstructCall() const;
inline Local<Value> Data() const;
private:
- Arguments();
friend class ImplementationUtilities;
inline Arguments(Local<Value> data,
Local<Object> holder,
@@ -1183,39 +1749,20 @@ class EXPORT Arguments { * The information passed to an accessor callback about the context
* of the property access.
*/
-class EXPORT AccessorInfo {
+class V8EXPORT AccessorInfo {
public:
- inline AccessorInfo(Local<Object> self,
- Local<Value> data,
- Local<Object> holder)
- : self_(self), data_(data), holder_(holder) { }
+ inline AccessorInfo(internal::Object** args)
+ : args_(args) { }
inline Local<Value> Data() const;
inline Local<Object> This() const;
inline Local<Object> Holder() const;
private:
- Local<Object> self_;
- Local<Value> data_;
- Local<Object> holder_;
+ internal::Object** args_;
};
typedef Handle<Value> (*InvocationCallback)(const Arguments& args);
-typedef int (*LookupCallback)(Local<Object> self, Local<String> name);
-
-/**
- * Accessor[Getter|Setter] are used as callback functions when
- * setting|getting a particular property. See objectTemplate::SetAccessor.
- */
-typedef Handle<Value> (*AccessorGetter)(Local<String> property,
- const AccessorInfo& info);
-
-
-typedef void (*AccessorSetter)(Local<String> property,
- Local<Value> value,
- const AccessorInfo& info);
-
-
/**
* NamedProperty[Getter|Setter] are used as interceptors on object.
* See ObjectTemplate::SetNamedPropertyHandler.
@@ -1232,12 +1779,12 @@ typedef Handle<Value> (*NamedPropertySetter)(Local<String> property, Local<Value> value,
const AccessorInfo& info);
-
/**
* Returns a non-empty handle if the interceptor intercepts the request.
- * The result is true if the property exists and false otherwise.
+ * The result is an integer encoding property attributes (like v8::None,
+ * v8::DontEnum, etc.)
*/
-typedef Handle<Boolean> (*NamedPropertyQuery)(Local<String> property,
+typedef Handle<Integer> (*NamedPropertyQuery)(Local<String> property,
const AccessorInfo& info);
@@ -1275,9 +1822,9 @@ typedef Handle<Value> (*IndexedPropertySetter)(uint32_t index, /**
* Returns a non-empty handle if the interceptor intercepts the request.
- * The result is true if the property exists and false otherwise.
+ * The result is an integer encoding property attributes.
*/
-typedef Handle<Boolean> (*IndexedPropertyQuery)(uint32_t index,
+typedef Handle<Integer> (*IndexedPropertyQuery)(uint32_t index,
const AccessorInfo& info);
/**
@@ -1296,27 +1843,6 @@ typedef Handle<Array> (*IndexedPropertyEnumerator)(const AccessorInfo& info); /**
- * Access control specifications.
- *
- * Some accessors should be accessible across contexts. These
- * accessors have an explicit access control parameter which specifies
- * the kind of cross-context access that should be allowed.
- *
- * Additionally, for security, accessors can prohibit overwriting by
- * accessors defined in JavaScript. For objects that have such
- * accessors either locally or in their prototype chain it is not
- * possible to overwrite the accessor by using __defineGetter__ or
- * __defineSetter__ from JavaScript code.
- */
-enum AccessControl {
- DEFAULT = 0,
- ALL_CAN_READ = 1,
- ALL_CAN_WRITE = 1 << 1,
- PROHIBITS_OVERWRITING = 1 << 2
-};
-
-
-/**
* Access type specification.
*/
enum AccessType {
@@ -1330,9 +1856,9 @@ enum AccessType { /**
* Returns true if cross-context access should be allowed to the named
- * property with the given key on the global object.
+ * property with the given key on the host object.
*/
-typedef bool (*NamedSecurityCallback)(Local<Object> global,
+typedef bool (*NamedSecurityCallback)(Local<Object> host,
Local<Value> key,
AccessType type,
Local<Value> data);
@@ -1340,9 +1866,9 @@ typedef bool (*NamedSecurityCallback)(Local<Object> global, /**
* Returns true if cross-context access should be allowed to the indexed
- * property with the given index on the global object.
+ * property with the given index on the host object.
*/
-typedef bool (*IndexedSecurityCallback)(Local<Object> global,
+typedef bool (*IndexedSecurityCallback)(Local<Object> host,
uint32_t index,
AccessType type,
Local<Value> data);
@@ -1351,7 +1877,10 @@ typedef bool (*IndexedSecurityCallback)(Local<Object> global, /**
* A FunctionTemplate is used to create functions at runtime. There
* can only be one function created from a FunctionTemplate in a
- * context.
+ * context. The lifetime of the created function is equal to the
+ * lifetime of the context. So in case the embedder needs to create
+ * temporary functions that can be collected using Scripts is
+ * preferred.
*
* A FunctionTemplate can have properties, these properties are added to the
* function object when it is created.
@@ -1437,7 +1966,7 @@ typedef bool (*IndexedSecurityCallback)(Local<Object> global, * child_instance.instance_property == 3;
* \endcode
*/
-class EXPORT FunctionTemplate : public Template {
+class V8EXPORT FunctionTemplate : public Template {
public:
/** Creates a function template.*/
static Local<FunctionTemplate> New(
@@ -1529,7 +2058,7 @@ class EXPORT FunctionTemplate : public Template { * Properties added to an ObjectTemplate are added to each object
* created from the ObjectTemplate.
*/
-class EXPORT ObjectTemplate : public Template {
+class V8EXPORT ObjectTemplate : public Template {
public:
/** Creates an ObjectTemplate. */
static Local<ObjectTemplate> New();
@@ -1577,7 +2106,8 @@ class EXPORT ObjectTemplate : public Template { *
* \param getter The callback to invoke when getting a property.
* \param setter The callback to invoke when setting a property.
- * \param query The callback to invoke to check is an object has a property.
+ * \param query The callback to invoke to check if a property is present,
+ * and if present, get its attributes.
* \param deleter The callback to invoke when deleting a property.
* \param enumerator The callback to invoke to enumerate all the named
* properties of an object.
@@ -1613,6 +2143,7 @@ class EXPORT ObjectTemplate : public Template { IndexedPropertyDeleter deleter = 0,
IndexedPropertyEnumerator enumerator = 0,
Handle<Value> data = Handle<Value>());
+
/**
* Sets the callback to be used when calling instances created from
* this template as a function. If no callback is set, instances
@@ -1671,7 +2202,7 @@ class EXPORT ObjectTemplate : public Template { * A Signature specifies which receivers and arguments a function can
* legally be called with.
*/
-class EXPORT Signature : public Data {
+class V8EXPORT Signature : public Data {
public:
static Local<Signature> New(Handle<FunctionTemplate> receiver =
Handle<FunctionTemplate>(),
@@ -1686,7 +2217,7 @@ class EXPORT Signature : public Data { * A utility for determining the type of objects based on the template
* they were constructed from.
*/
-class EXPORT TypeSwitch : public Data {
+class V8EXPORT TypeSwitch : public Data {
public:
static Local<TypeSwitch> New(Handle<FunctionTemplate> type);
static Local<TypeSwitch> New(int argc, Handle<FunctionTemplate> types[]);
@@ -1702,7 +2233,7 @@ class EXPORT TypeSwitch : public Data { /**
* Ignore
*/
-class EXPORT Extension { // NOLINT
+class V8EXPORT Extension { // NOLINT
public:
Extension(const char* name,
const char* source = 0,
@@ -1734,13 +2265,13 @@ class EXPORT Extension { // NOLINT };
-void EXPORT RegisterExtension(Extension* extension);
+void V8EXPORT RegisterExtension(Extension* extension);
/**
* Ignore
*/
-class EXPORT DeclareExtension {
+class V8EXPORT DeclareExtension {
public:
inline DeclareExtension(Extension* extension) {
RegisterExtension(extension);
@@ -1751,17 +2282,22 @@ class EXPORT DeclareExtension { // --- S t a t i c s ---
-Handle<Primitive> EXPORT Undefined();
-Handle<Primitive> EXPORT Null();
-Handle<Boolean> EXPORT True();
-Handle<Boolean> EXPORT False();
+Handle<Primitive> V8EXPORT Undefined();
+Handle<Primitive> V8EXPORT Null();
+Handle<Boolean> V8EXPORT True();
+Handle<Boolean> V8EXPORT False();
/**
- * A set of constraints that specifies the limits of the runtime's
- * memory use.
+ * A set of constraints that specifies the limits of the runtime's memory use.
+ * You must set the heap size before initializing the VM - the size cannot be
+ * adjusted after the VM is initialized.
+ *
+ * If you are using threads then you should hold the V8::Locker lock while
+ * setting the stack limit and you must set a non-default stack limit separately
+ * for each thread.
*/
-class EXPORT ResourceConstraints {
+class V8EXPORT ResourceConstraints {
public:
ResourceConstraints();
int max_young_space_size() const { return max_young_space_size_; }
@@ -1769,6 +2305,7 @@ class EXPORT ResourceConstraints { int max_old_space_size() const { return max_old_space_size_; }
void set_max_old_space_size(int value) { max_old_space_size_ = value; }
uint32_t* stack_limit() const { return stack_limit_; }
+ // Sets an address beyond which the VM's stack may not grow.
void set_stack_limit(uint32_t* value) { stack_limit_ = value; }
private:
int max_young_space_size_;
@@ -1777,7 +2314,7 @@ class EXPORT ResourceConstraints { };
-bool SetResourceConstraints(ResourceConstraints* constraints);
+bool V8EXPORT SetResourceConstraints(ResourceConstraints* constraints);
// --- E x c e p t i o n s ---
@@ -1795,13 +2332,13 @@ typedef void (*MessageCallback)(Handle<Message> message, Handle<Value> data); * operation; the caller must return immediately and only after the exception
* has been handled does it become legal to invoke JavaScript operations.
*/
-Handle<Value> EXPORT ThrowException(Handle<Value> exception);
+Handle<Value> V8EXPORT ThrowException(Handle<Value> exception);
/**
* Create new error objects by calling the corresponding error object
* constructor with the message.
*/
-class EXPORT Exception {
+class V8EXPORT Exception {
public:
static Local<Value> RangeError(Handle<String> message);
static Local<Value> ReferenceError(Handle<String> message);
@@ -1815,6 +2352,37 @@ class EXPORT Exception { typedef int* (*CounterLookupCallback)(const char* name);
+typedef void* (*CreateHistogramCallback)(const char* name,
+ int min,
+ int max,
+ size_t buckets);
+
+typedef void (*AddHistogramSampleCallback)(void* histogram, int sample);
+
+// --- M e m o r y A l l o c a t i o n C a l l b a c k ---
+ enum ObjectSpace {
+ kObjectSpaceNewSpace = 1 << 0,
+ kObjectSpaceOldPointerSpace = 1 << 1,
+ kObjectSpaceOldDataSpace = 1 << 2,
+ kObjectSpaceCodeSpace = 1 << 3,
+ kObjectSpaceMapSpace = 1 << 4,
+ kObjectSpaceLoSpace = 1 << 5,
+
+ kObjectSpaceAll = kObjectSpaceNewSpace | kObjectSpaceOldPointerSpace |
+ kObjectSpaceOldDataSpace | kObjectSpaceCodeSpace | kObjectSpaceMapSpace |
+ kObjectSpaceLoSpace
+ };
+
+ enum AllocationAction {
+ kAllocationActionAllocate = 1 << 0,
+ kAllocationActionFree = 1 << 1,
+ kAllocationActionAll = kAllocationActionAllocate | kAllocationActionFree
+ };
+
+typedef void (*MemoryAllocationCallback)(ObjectSpace space,
+ AllocationAction action,
+ int size);
+
// --- F a i l e d A c c e s s C h e c k C a l l b a c k ---
typedef void (*FailedAccessCheckCallback)(Local<Object> target,
AccessType type,
@@ -1823,45 +2391,73 @@ typedef void (*FailedAccessCheckCallback)(Local<Object> target, // --- G a r b a g e C o l l e c t i o n C a l l b a c k s
/**
- * Applications can register a callback function which is called
- * before and after a major garbage collection. Allocations are not
- * allowed in the callback function, you therefore cannot manipulate
+ * Applications can register callback functions which will be called
+ * before and after a garbage collection. Allocations are not
+ * allowed in the callback functions, you therefore cannot manipulate
* objects (set or delete properties for example) since it is possible
* such operations will result in the allocation of objects.
*/
-typedef void (*GCCallback)();
+enum GCType {
+ kGCTypeScavenge = 1 << 0,
+ kGCTypeMarkSweepCompact = 1 << 1,
+ kGCTypeAll = kGCTypeScavenge | kGCTypeMarkSweepCompact
+};
+enum GCCallbackFlags {
+ kNoGCCallbackFlags = 0,
+ kGCCallbackFlagCompacted = 1 << 0
+};
+
+typedef void (*GCPrologueCallback)(GCType type, GCCallbackFlags flags);
+typedef void (*GCEpilogueCallback)(GCType type, GCCallbackFlags flags);
+
+typedef void (*GCCallback)();
-// --- E x t e r n a l S y m b o l C a l l b a c k ---
/**
- * Callback used to allocate certain V8 symbols as external strings.
- *
- * The data passed to the callback is utf8 encoded.
+ * Profiler modules.
*
- * Allocations are not allowed in the callback function, you therefore
- * cannot manipulate objects (set or delete properties for example)
- * since it is possible such operations will result in the allocation
- * of objects.
+ * In V8, profiler consists of several modules: CPU profiler, and different
+ * kinds of heap profiling. Each can be turned on / off independently.
+ * When PROFILER_MODULE_HEAP_SNAPSHOT flag is passed to ResumeProfilerEx,
+ * modules are enabled only temporarily for making a snapshot of the heap.
*/
-typedef String::ExternalStringResource* (*ExternalSymbolCallback)(
- const char* utf8,
- size_t length);
-
+enum ProfilerModules {
+ PROFILER_MODULE_NONE = 0,
+ PROFILER_MODULE_CPU = 1,
+ PROFILER_MODULE_HEAP_STATS = 1 << 1,
+ PROFILER_MODULE_JS_CONSTRUCTORS = 1 << 2,
+ PROFILER_MODULE_HEAP_SNAPSHOT = 1 << 16
+};
-// --- C o n t e x t G e n e r a t o r ---
/**
- * Applications must provide a callback function which is called to generate
- * a context if a context was not deserialized from the snapshot.
+ * Collection of V8 heap information.
+ *
+ * Instances of this class can be passed to v8::V8::HeapStatistics to
+ * get heap statistics from V8.
*/
-typedef Persistent<Context> (*ContextGenerator)();
+class V8EXPORT HeapStatistics {
+ public:
+ HeapStatistics();
+ size_t total_heap_size() { return total_heap_size_; }
+ size_t used_heap_size() { return used_heap_size_; }
+
+ private:
+ void set_total_heap_size(size_t size) { total_heap_size_ = size; }
+ void set_used_heap_size(size_t size) { used_heap_size_ = size; }
+
+ size_t total_heap_size_;
+ size_t used_heap_size_;
+
+ friend class V8;
+};
/**
* Container class for static utility functions.
*/
-class EXPORT V8 {
+class V8EXPORT V8 {
public:
/** Set the callback to invoke in case of fatal errors. */
static void SetFatalErrorHandler(FatalErrorCallback that);
@@ -1901,6 +2497,15 @@ class EXPORT V8 { static void RemoveMessageListeners(MessageCallback that);
/**
+ * Tells V8 to capture current stack trace when uncaught exception occurs
+ * and report it to the message listeners. The option is off by default.
+ */
+ static void SetCaptureStackTraceForUncaughtExceptions(
+ bool capture,
+ int frame_limit = 10,
+ StackTrace::StackTraceOptions options = StackTrace::kOverview);
+
+ /**
* Sets V8 flags from a string.
*/
static void SetFlagsFromString(const char* str, int length);
@@ -1922,6 +2527,15 @@ class EXPORT V8 { static void SetCounterFunction(CounterLookupCallback);
/**
+ * Enables the host application to provide a mechanism for recording
+ * histograms. The CreateHistogram function returns a
+ * histogram which will later be passed to the AddHistogramSample
+ * function.
+ */
+ static void SetCreateHistogramFunction(CreateHistogramCallback);
+ static void SetAddHistogramSampleFunction(AddHistogramSampleCallback);
+
+ /**
* Enables the computation of a sliding window of states. The sliding
* window information is recorded in statistics counters.
*/
@@ -1932,7 +2546,27 @@ class EXPORT V8 { /**
* Enables the host application to receive a notification before a
- * major garbage colletion. Allocations are not allowed in the
+ * garbage collection. Allocations are not allowed in the
+ * callback function, you therefore cannot manipulate objects (set
+ * or delete properties for example) since it is possible such
+ * operations will result in the allocation of objects. It is possible
+ * to specify the GCType filter for your callback. But it is not possible to
+ * register the same callback function two times with different
+ * GCType filters.
+ */
+ static void AddGCPrologueCallback(
+ GCPrologueCallback callback, GCType gc_type_filter = kGCTypeAll);
+
+ /**
+ * This function removes callback which was installed by
+ * AddGCPrologueCallback function.
+ */
+ static void RemoveGCPrologueCallback(GCPrologueCallback callback);
+
+ /**
+ * The function is deprecated. Please use AddGCPrologueCallback instead.
+ * Enables the host application to receive a notification before a
+ * garbage collection. Allocations are not allowed in the
* callback function, you therefore cannot manipulate objects (set
* or delete properties for example) since it is possible such
* operations will result in the allocation of objects.
@@ -1941,6 +2575,26 @@ class EXPORT V8 { /**
* Enables the host application to receive a notification after a
+ * garbage collection. Allocations are not allowed in the
+ * callback function, you therefore cannot manipulate objects (set
+ * or delete properties for example) since it is possible such
+ * operations will result in the allocation of objects. It is possible
+ * to specify the GCType filter for your callback. But it is not possible to
+ * register the same callback function two times with different
+ * GCType filters.
+ */
+ static void AddGCEpilogueCallback(
+ GCEpilogueCallback callback, GCType gc_type_filter = kGCTypeAll);
+
+ /**
+ * This function removes callback which was installed by
+ * AddGCEpilogueCallback function.
+ */
+ static void RemoveGCEpilogueCallback(GCEpilogueCallback callback);
+
+ /**
+ * The function is deprecated. Please use AddGCEpilogueCallback instead.
+ * Enables the host application to receive a notification after a
* major garbage collection. Allocations are not allowed in the
* callback function, you therefore cannot manipulate objects (set
* or delete properties for example) since it is possible such
@@ -1949,18 +2603,18 @@ class EXPORT V8 { static void SetGlobalGCEpilogueCallback(GCCallback);
/**
- * Applications can register a callback that will be used when
- * allocating most of the V8 symbols. The callback must return an
- * external string resource that represents the symbols.
- *
- * Most often when performing a property lookup the key will be a
- * symbol. Allocating symbols as external strings can reduce the
- * amount of string conversions needed when using interceptors and
- * accessors.
- *
- * \note This is an experimental feature and it might be removed.
+ * Enables the host application to provide a mechanism to be notified
+ * and perform custom logging when V8 Allocates Executable Memory.
+ */
+ static void AddMemoryAllocationCallback(MemoryAllocationCallback callback,
+ ObjectSpace space,
+ AllocationAction action);
+
+ /**
+ * This function removes callback which was installed by
+ * AddMemoryAllocationCallback function.
*/
- static void SetExternalSymbolCallback(ExternalSymbolCallback);
+ static void RemoveMemoryAllocationCallback(MemoryAllocationCallback callback);
/**
* Allows the host application to group objects together. If one
@@ -1974,7 +2628,8 @@ class EXPORT V8 { /**
* Initializes from snapshot if possible. Otherwise, attempts to
- * initialize from scratch.
+ * initialize from scratch. This function is called implicitly if
+ * you use the API without calling it first.
*/
static bool Initialize();
@@ -1994,15 +2649,190 @@ class EXPORT V8 { */
static int AdjustAmountOfExternalAllocatedMemory(int change_in_bytes);
+ /**
+ * Suspends recording of tick samples in the profiler.
+ * When the V8 profiling mode is enabled (usually via command line
+ * switches) this function suspends recording of tick samples.
+ * Profiling ticks are discarded until ResumeProfiler() is called.
+ *
+ * See also the --prof and --prof_auto command line switches to
+ * enable V8 profiling.
+ */
+ static void PauseProfiler();
+
+ /**
+ * Resumes recording of tick samples in the profiler.
+ * See also PauseProfiler().
+ */
+ static void ResumeProfiler();
+
+ /**
+ * Return whether profiler is currently paused.
+ */
+ static bool IsProfilerPaused();
+
+ /**
+ * Resumes specified profiler modules. Can be called several times to
+ * mark the opening of a profiler events block with the given tag.
+ *
+ * "ResumeProfiler" is equivalent to "ResumeProfilerEx(PROFILER_MODULE_CPU)".
+ * See ProfilerModules enum.
+ *
+ * \param flags Flags specifying profiler modules.
+ * \param tag Profile tag.
+ */
+ static void ResumeProfilerEx(int flags, int tag = 0);
+
+ /**
+ * Pauses specified profiler modules. Each call to "PauseProfilerEx" closes
+ * a block of profiler events opened by a call to "ResumeProfilerEx" with the
+ * same tag value. There is no need for blocks to be properly nested.
+ * The profiler is paused when the last opened block is closed.
+ *
+ * "PauseProfiler" is equivalent to "PauseProfilerEx(PROFILER_MODULE_CPU)".
+ * See ProfilerModules enum.
+ *
+ * \param flags Flags specifying profiler modules.
+ * \param tag Profile tag.
+ */
+ static void PauseProfilerEx(int flags, int tag = 0);
+
+ /**
+ * Returns active (resumed) profiler modules.
+ * See ProfilerModules enum.
+ *
+ * \returns active profiler modules.
+ */
+ static int GetActiveProfilerModules();
+
+ /**
+ * If logging is performed into a memory buffer (via --logfile=*), allows to
+ * retrieve previously written messages. This can be used for retrieving
+ * profiler log data in the application. This function is thread-safe.
+ *
+ * Caller provides a destination buffer that must exist during GetLogLines
+ * call. Only whole log lines are copied into the buffer.
+ *
+ * \param from_pos specified a point in a buffer to read from, 0 is the
+ * beginning of a buffer. It is assumed that caller updates its current
+ * position using returned size value from the previous call.
+ * \param dest_buf destination buffer for log data.
+ * \param max_size size of the destination buffer.
+ * \returns actual size of log data copied into buffer.
+ */
+ static int GetLogLines(int from_pos, char* dest_buf, int max_size);
+
+ /**
+ * The minimum allowed size for a log lines buffer. If the size of
+ * the buffer given will not be enough to hold a line of the maximum
+ * length, an attempt to find a log line end in GetLogLines will
+ * fail, and an empty result will be returned.
+ */
+ static const int kMinimumSizeForLogLinesBuffer = 2048;
+
+ /**
+ * Retrieve the V8 thread id of the calling thread.
+ *
+ * The thread id for a thread should only be retrieved after the V8
+ * lock has been acquired with a Locker object with that thread.
+ */
+ static int GetCurrentThreadId();
+
+ /**
+ * Forcefully terminate execution of a JavaScript thread. This can
+ * be used to terminate long-running scripts.
+ *
+ * TerminateExecution should only be called when then V8 lock has
+ * been acquired with a Locker object. Therefore, in order to be
+ * able to terminate long-running threads, preemption must be
+ * enabled to allow the user of TerminateExecution to acquire the
+ * lock.
+ *
+ * The termination is achieved by throwing an exception that is
+ * uncatchable by JavaScript exception handlers. Termination
+ * exceptions act as if they were caught by a C++ TryCatch exception
+ * handlers. If forceful termination is used, any C++ TryCatch
+ * exception handler that catches an exception should check if that
+ * exception is a termination exception and immediately return if
+ * that is the case. Returning immediately in that case will
+ * continue the propagation of the termination exception if needed.
+ *
+ * The thread id passed to TerminateExecution must have been
+ * obtained by calling GetCurrentThreadId on the thread in question.
+ *
+ * \param thread_id The thread id of the thread to terminate.
+ */
+ static void TerminateExecution(int thread_id);
+
+ /**
+ * Forcefully terminate the current thread of JavaScript execution.
+ *
+ * This method can be used by any thread even if that thread has not
+ * acquired the V8 lock with a Locker object.
+ */
+ static void TerminateExecution();
+
+ /**
+ * Is V8 terminating JavaScript execution.
+ *
+ * Returns true if JavaScript execution is currently terminating
+ * because of a call to TerminateExecution. In that case there are
+ * still JavaScript frames on the stack and the termination
+ * exception is still active.
+ */
+ static bool IsExecutionTerminating();
+
+ /**
+ * Releases any resources used by v8 and stops any utility threads
+ * that may be running. Note that disposing v8 is permanent, it
+ * cannot be reinitialized.
+ *
+ * It should generally not be necessary to dispose v8 before exiting
+ * a process, this should happen automatically. It is only necessary
+ * to use if the process needs the resources taken up by v8.
+ */
+ static bool Dispose();
+
+ /**
+ * Get statistics about the heap memory usage.
+ */
+ static void GetHeapStatistics(HeapStatistics* heap_statistics);
+
+ /**
+ * Optional notification that the embedder is idle.
+ * V8 uses the notification to reduce memory footprint.
+ * This call can be used repeatedly if the embedder remains idle.
+ * Returns true if the embedder should stop calling IdleNotification
+ * until real work has been done. This indicates that V8 has done
+ * as much cleanup as it will be able to do.
+ */
+ static bool IdleNotification();
+
+ /**
+ * Optional notification that the system is running low on memory.
+ * V8 uses these notifications to attempt to free memory.
+ */
+ static void LowMemoryNotification();
+
+ /**
+ * Optional notification that a context has been disposed. V8 uses
+ * these notifications to guide the GC heuristic. Returns the number
+ * of context disposals - including this one - since the last time
+ * V8 had a chance to clean up.
+ */
+ static int ContextDisposedNotification();
+
private:
V8();
- static void** GlobalizeReference(void** handle);
- static void DisposeGlobal(void** global_handle);
- static void MakeWeak(void** global_handle, void* data, WeakReferenceCallback);
- static void ClearWeak(void** global_handle);
- static bool IsGlobalNearDeath(void** global_handle);
- static bool IsGlobalWeak(void** global_handle);
+ static internal::Object** GlobalizeReference(internal::Object** handle);
+ static void DisposeGlobal(internal::Object** global_handle);
+ static void MakeWeak(internal::Object** global_handle,
+ void* data,
+ WeakReferenceCallback);
+ static void ClearWeak(internal::Object** global_handle);
+ static bool IsGlobalNearDeath(internal::Object** global_handle);
+ static bool IsGlobalWeak(internal::Object** global_handle);
template <class T> friend class Handle;
template <class T> friend class Local;
@@ -2014,7 +2844,7 @@ class EXPORT V8 { /**
* An external exception handler.
*/
-class EXPORT TryCatch {
+class V8EXPORT TryCatch {
public:
/**
@@ -2033,6 +2863,30 @@ class EXPORT TryCatch { bool HasCaught() const;
/**
+ * For certain types of exceptions, it makes no sense to continue
+ * execution.
+ *
+ * Currently, the only type of exception that can be caught by a
+ * TryCatch handler and for which it does not make sense to continue
+ * is termination exception. Such exceptions are thrown when the
+ * TerminateExecution methods are called to terminate a long-running
+ * script.
+ *
+ * If CanContinue returns false, the correct action is to perform
+ * any C++ cleanup needed and then return.
+ */
+ bool CanContinue() const;
+
+ /**
+ * Throws the exception caught by this TryCatch in a way that avoids
+ * it being caught again by this same TryCatch. As with ThrowException
+ * it is illegal to execute any JavaScript operations after calling
+ * ReThrow; the caller must return immediately to where the exception
+ * is caught.
+ */
+ Handle<Value> ReThrow();
+
+ /**
* Returns the exception caught by this try/catch block. If no exception has
* been caught an empty handle is returned.
*
@@ -2041,6 +2895,12 @@ class EXPORT TryCatch { Local<Value> Exception() const;
/**
+ * Returns the .stack property of the thrown object. If no .stack
+ * property is present an empty handle is returned.
+ */
+ Local<Value> StackTrace() const;
+
+ /**
* Returns the message associated with this exception. If there is
* no message associated an empty handle is returned.
*
@@ -2077,13 +2937,16 @@ class EXPORT TryCatch { */
void SetCaptureMessage(bool value);
- public:
- TryCatch* next_;
+ private:
+ void* next_;
void* exception_;
void* message_;
- bool is_verbose_;
- bool capture_message_;
- void* js_handler_;
+ bool is_verbose_ : 1;
+ bool can_continue_ : 1;
+ bool capture_message_ : 1;
+ bool rethrow_ : 1;
+
+ friend class v8::internal::Top;
};
@@ -2093,7 +2956,7 @@ class EXPORT TryCatch { /**
* Ignore
*/
-class EXPORT ExtensionConfiguration {
+class V8EXPORT ExtensionConfiguration {
public:
ExtensionConfiguration(int name_count, const char* names[])
: name_count_(name_count), names_(names) { }
@@ -2108,7 +2971,7 @@ class EXPORT ExtensionConfiguration { * A sandboxed execution context with its own set of built-in objects
* and functions.
*/
-class EXPORT Context {
+class V8EXPORT Context {
public:
/** Returns the global object of the context. */
Local<Object> Global();
@@ -2119,9 +2982,26 @@ class EXPORT Context { */
void DetachGlobal();
- /** Creates a new context. */
+ /**
+ * Reattaches a global object to a context. This can be used to
+ * restore the connection between a global object and a context
+ * after DetachGlobal has been called.
+ *
+ * \param global_object The global object to reattach to the
+ * context. For this to work, the global object must be the global
+ * object that was associated with this context before a call to
+ * DetachGlobal.
+ */
+ void ReattachGlobal(Handle<Object> global_object);
+
+ /** Creates a new context.
+ *
+ * Returns a persistent handle to the newly allocated context. This
+ * persistent handle has to be disposed when the context is no
+ * longer used so the context can be garbage collected.
+ */
static Persistent<Context> New(
- ExtensionConfiguration* extensions = 0,
+ ExtensionConfiguration* extensions = NULL,
Handle<ObjectTemplate> global_template = Handle<ObjectTemplate>(),
Handle<Value> global_object = Handle<Value>());
@@ -2132,6 +3012,13 @@ class EXPORT Context { static Local<Context> GetCurrent();
/**
+ * Returns the context of the calling JavaScript code. That is the
+ * context of the top-most JavaScript frame. If there are no
+ * JavaScript frames an empty handle is returned.
+ */
+ static Local<Context> GetCalling();
+
+ /**
* Sets the security token for the context. To access an object in
* another context, the security tokens must match.
*/
@@ -2164,10 +3051,18 @@ class EXPORT Context { static bool InContext();
/**
+ * Associate an additional data object with the context. This is mainly used
+ * with the debugger to provide additional information on the context through
+ * the debugger API.
+ */
+ void SetData(Handle<String> data);
+ Local<Value> GetData();
+
+ /**
* Stack-allocated class which sets the execution context for all
* operations executed within a local scope.
*/
- class EXPORT Scope {
+ class Scope {
public:
inline Scope(Handle<Context> context) : context_(context) {
context_->Enter();
@@ -2253,14 +3148,14 @@ class EXPORT Context { * // V8 Now no longer locked.
* \endcode
*/
-class EXPORT Unlocker {
+class V8EXPORT Unlocker {
public:
Unlocker();
~Unlocker();
};
-class EXPORT Locker {
+class V8EXPORT Locker {
public:
Locker();
~Locker();
@@ -2284,19 +3179,176 @@ class EXPORT Locker { */
static bool IsLocked();
+ /**
+ * Returns whether v8::Locker is being used by this V8 instance.
+ */
+ static bool IsActive() { return active_; }
+
private:
bool has_lock_;
bool top_level_;
+ static bool active_;
+
// Disallow copying and assigning.
Locker(const Locker&);
void operator=(const Locker&);
};
+/**
+ * An interface for exporting data from V8, using "push" model.
+ */
+class V8EXPORT OutputStream {
+public:
+ enum OutputEncoding {
+ kAscii = 0 // 7-bit ASCII.
+ };
+ enum WriteResult {
+ kContinue = 0,
+ kAbort = 1
+ };
+ virtual ~OutputStream() {}
+ /** Notify about the end of stream. */
+ virtual void EndOfStream() = 0;
+ /** Get preferred output chunk size. Called only once. */
+ virtual int GetChunkSize() { return 1024; }
+ /** Get preferred output encoding. Called only once. */
+ virtual OutputEncoding GetOutputEncoding() { return kAscii; }
+ /**
+ * Writes the next chunk of snapshot data into the stream. Writing
+ * can be stopped by returning kAbort as function result. EndOfStream
+ * will not be called in case writing was aborted.
+ */
+ virtual WriteResult WriteAsciiChunk(char* data, int size) = 0;
+};
+
+
// --- I m p l e m e n t a t i o n ---
+
+namespace internal {
+
+
+// Tag information for HeapObject.
+const int kHeapObjectTag = 1;
+const int kHeapObjectTagSize = 2;
+const intptr_t kHeapObjectTagMask = (1 << kHeapObjectTagSize) - 1;
+
+// Tag information for Smi.
+const int kSmiTag = 0;
+const int kSmiTagSize = 1;
+const intptr_t kSmiTagMask = (1 << kSmiTagSize) - 1;
+
+template <size_t ptr_size> struct SmiConstants;
+
+// Smi constants for 32-bit systems.
+template <> struct SmiConstants<4> {
+ static const int kSmiShiftSize = 0;
+ static const int kSmiValueSize = 31;
+ static inline int SmiToInt(internal::Object* value) {
+ int shift_bits = kSmiTagSize + kSmiShiftSize;
+ // Throw away top 32 bits and shift down (requires >> to be sign extending).
+ return static_cast<int>(reinterpret_cast<intptr_t>(value)) >> shift_bits;
+ }
+};
+
+// Smi constants for 64-bit systems.
+template <> struct SmiConstants<8> {
+ static const int kSmiShiftSize = 31;
+ static const int kSmiValueSize = 32;
+ static inline int SmiToInt(internal::Object* value) {
+ int shift_bits = kSmiTagSize + kSmiShiftSize;
+ // Shift down and throw away top 32 bits.
+ return static_cast<int>(reinterpret_cast<intptr_t>(value) >> shift_bits);
+ }
+};
+
+const int kSmiShiftSize = SmiConstants<sizeof(void*)>::kSmiShiftSize;
+const int kSmiValueSize = SmiConstants<sizeof(void*)>::kSmiValueSize;
+
+template <size_t ptr_size> struct InternalConstants;
+
+// Internal constants for 32-bit systems.
+template <> struct InternalConstants<4> {
+ static const int kStringResourceOffset = 3 * sizeof(void*);
+};
+
+// Internal constants for 64-bit systems.
+template <> struct InternalConstants<8> {
+ static const int kStringResourceOffset = 3 * sizeof(void*);
+};
+
+/**
+ * This class exports constants and functionality from within v8 that
+ * is necessary to implement inline functions in the v8 api. Don't
+ * depend on functions and constants defined here.
+ */
+class Internals {
+ public:
+
+ // These values match non-compiler-dependent values defined within
+ // the implementation of v8.
+ static const int kHeapObjectMapOffset = 0;
+ static const int kMapInstanceTypeOffset = sizeof(void*) + sizeof(int);
+ static const int kStringResourceOffset =
+ InternalConstants<sizeof(void*)>::kStringResourceOffset;
+
+ static const int kProxyProxyOffset = sizeof(void*);
+ static const int kJSObjectHeaderSize = 3 * sizeof(void*);
+ static const int kFullStringRepresentationMask = 0x07;
+ static const int kExternalTwoByteRepresentationTag = 0x02;
+
+ static const int kJSObjectType = 0x9f;
+ static const int kFirstNonstringType = 0x80;
+ static const int kProxyType = 0x85;
+
+ static inline bool HasHeapObjectTag(internal::Object* value) {
+ return ((reinterpret_cast<intptr_t>(value) & kHeapObjectTagMask) ==
+ kHeapObjectTag);
+ }
+
+ static inline bool HasSmiTag(internal::Object* value) {
+ return ((reinterpret_cast<intptr_t>(value) & kSmiTagMask) == kSmiTag);
+ }
+
+ static inline int SmiValue(internal::Object* value) {
+ return SmiConstants<sizeof(void*)>::SmiToInt(value);
+ }
+
+ static inline int GetInstanceType(internal::Object* obj) {
+ typedef internal::Object O;
+ O* map = ReadField<O*>(obj, kHeapObjectMapOffset);
+ return ReadField<uint8_t>(map, kMapInstanceTypeOffset);
+ }
+
+ static inline void* GetExternalPointer(internal::Object* obj) {
+ if (HasSmiTag(obj)) {
+ return obj;
+ } else if (GetInstanceType(obj) == kProxyType) {
+ return ReadField<void*>(obj, kProxyProxyOffset);
+ } else {
+ return NULL;
+ }
+ }
+
+ static inline bool IsExternalTwoByteString(int instance_type) {
+ int representation = (instance_type & kFullStringRepresentationMask);
+ return representation == kExternalTwoByteRepresentationTag;
+ }
+
+ template <typename T>
+ static inline T ReadField(Object* ptr, int offset) {
+ uint8_t* addr = reinterpret_cast<uint8_t*>(ptr) + offset - kHeapObjectTag;
+ return *reinterpret_cast<T*>(addr);
+ }
+
+};
+
+}
+
+
template <class T>
Handle<T>::Handle() : val_(0) { }
@@ -2308,7 +3360,7 @@ Local<T>::Local() : Handle<T>() { } template <class T>
Local<T> Local<T>::New(Handle<T> that) {
if (that.IsEmpty()) return Local<T>();
- void** p = reinterpret_cast<void**>(*that);
+ internal::Object** p = reinterpret_cast<internal::Object**>(*that);
return Local<T>(reinterpret_cast<T*>(HandleScope::CreateHandle(*p)));
}
@@ -2316,7 +3368,7 @@ Local<T> Local<T>::New(Handle<T> that) { template <class T>
Persistent<T> Persistent<T>::New(Handle<T> that) {
if (that.IsEmpty()) return Persistent<T>();
- void** p = reinterpret_cast<void**>(*that);
+ internal::Object** p = reinterpret_cast<internal::Object**>(*that);
return Persistent<T>(reinterpret_cast<T*>(V8::GlobalizeReference(p)));
}
@@ -2324,21 +3376,21 @@ Persistent<T> Persistent<T>::New(Handle<T> that) { template <class T>
bool Persistent<T>::IsNearDeath() const {
if (this->IsEmpty()) return false;
- return V8::IsGlobalNearDeath(reinterpret_cast<void**>(**this));
+ return V8::IsGlobalNearDeath(reinterpret_cast<internal::Object**>(**this));
}
template <class T>
bool Persistent<T>::IsWeak() const {
if (this->IsEmpty()) return false;
- return V8::IsGlobalWeak(reinterpret_cast<void**>(**this));
+ return V8::IsGlobalWeak(reinterpret_cast<internal::Object**>(**this));
}
template <class T>
void Persistent<T>::Dispose() {
if (this->IsEmpty()) return;
- V8::DisposeGlobal(reinterpret_cast<void**>(**this));
+ V8::DisposeGlobal(reinterpret_cast<internal::Object**>(**this));
}
@@ -2347,24 +3399,25 @@ Persistent<T>::Persistent() : Handle<T>() { } template <class T>
void Persistent<T>::MakeWeak(void* parameters, WeakReferenceCallback callback) {
- V8::MakeWeak(reinterpret_cast<void**>(**this), parameters, callback);
+ V8::MakeWeak(reinterpret_cast<internal::Object**>(**this),
+ parameters,
+ callback);
}
template <class T>
void Persistent<T>::ClearWeak() {
- V8::ClearWeak(reinterpret_cast<void**>(**this));
+ V8::ClearWeak(reinterpret_cast<internal::Object**>(**this));
}
-template <class T>
-T* Handle<T>::operator->() const {
- return val_;
-}
-
-template <class T>
-T* Handle<T>::operator*() const {
- return val_;
-}
+Arguments::Arguments(v8::Local<v8::Value> data,
+ v8::Local<v8::Object> holder,
+ v8::Local<v8::Function> callee,
+ bool is_construct_call,
+ void** values, int length)
+ : data_(data), holder_(holder), callee_(callee),
+ is_construct_call_(is_construct_call),
+ values_(values), length_(length) { }
Local<Value> Arguments::operator[](int i) const {
@@ -2403,24 +3456,10 @@ int Arguments::Length() const { }
-Local<Value> AccessorInfo::Data() const {
- return data_;
-}
-
-
-Local<Object> AccessorInfo::This() const {
- return self_;
-}
-
-
-Local<Object> AccessorInfo::Holder() const {
- return holder_;
-}
-
-
template <class T>
Local<T> HandleScope::Close(Handle<T> value) {
- void** after = RawClose(reinterpret_cast<void**>(*value));
+ internal::Object** before = reinterpret_cast<internal::Object**>(*value);
+ internal::Object** after = RawClose(before);
return Local<T>(reinterpret_cast<T*>(after));
}
@@ -2449,6 +3488,182 @@ void Template::Set(const char* name, v8::Handle<Data> value) { }
+Local<Value> Object::GetInternalField(int index) {
+#ifndef V8_ENABLE_CHECKS
+ Local<Value> quick_result = UncheckedGetInternalField(index);
+ if (!quick_result.IsEmpty()) return quick_result;
+#endif
+ return CheckedGetInternalField(index);
+}
+
+
+Local<Value> Object::UncheckedGetInternalField(int index) {
+ typedef internal::Object O;
+ typedef internal::Internals I;
+ O* obj = *reinterpret_cast<O**>(this);
+ if (I::GetInstanceType(obj) == I::kJSObjectType) {
+ // If the object is a plain JSObject, which is the common case,
+ // we know where to find the internal fields and can return the
+ // value directly.
+ int offset = I::kJSObjectHeaderSize + (sizeof(void*) * index);
+ O* value = I::ReadField<O*>(obj, offset);
+ O** result = HandleScope::CreateHandle(value);
+ return Local<Value>(reinterpret_cast<Value*>(result));
+ } else {
+ return Local<Value>();
+ }
+}
+
+
+void* External::Unwrap(Handle<v8::Value> obj) {
+#ifdef V8_ENABLE_CHECKS
+ return FullUnwrap(obj);
+#else
+ return QuickUnwrap(obj);
+#endif
+}
+
+
+void* External::QuickUnwrap(Handle<v8::Value> wrapper) {
+ typedef internal::Object O;
+ O* obj = *reinterpret_cast<O**>(const_cast<v8::Value*>(*wrapper));
+ return internal::Internals::GetExternalPointer(obj);
+}
+
+
+void* Object::GetPointerFromInternalField(int index) {
+ typedef internal::Object O;
+ typedef internal::Internals I;
+
+ O* obj = *reinterpret_cast<O**>(this);
+
+ if (I::GetInstanceType(obj) == I::kJSObjectType) {
+ // If the object is a plain JSObject, which is the common case,
+ // we know where to find the internal fields and can return the
+ // value directly.
+ int offset = I::kJSObjectHeaderSize + (sizeof(void*) * index);
+ O* value = I::ReadField<O*>(obj, offset);
+ return I::GetExternalPointer(value);
+ }
+
+ return SlowGetPointerFromInternalField(index);
+}
+
+
+String* String::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+ CheckCast(value);
+#endif
+ return static_cast<String*>(value);
+}
+
+
+String::ExternalStringResource* String::GetExternalStringResource() const {
+ typedef internal::Object O;
+ typedef internal::Internals I;
+ O* obj = *reinterpret_cast<O**>(const_cast<String*>(this));
+ String::ExternalStringResource* result;
+ if (I::IsExternalTwoByteString(I::GetInstanceType(obj))) {
+ void* value = I::ReadField<void*>(obj, I::kStringResourceOffset);
+ result = reinterpret_cast<String::ExternalStringResource*>(value);
+ } else {
+ result = NULL;
+ }
+#ifdef V8_ENABLE_CHECKS
+ VerifyExternalStringResource(result);
+#endif
+ return result;
+}
+
+
+bool Value::IsString() const {
+#ifdef V8_ENABLE_CHECKS
+ return FullIsString();
+#else
+ return QuickIsString();
+#endif
+}
+
+bool Value::QuickIsString() const {
+ typedef internal::Object O;
+ typedef internal::Internals I;
+ O* obj = *reinterpret_cast<O**>(const_cast<Value*>(this));
+ if (!I::HasHeapObjectTag(obj)) return false;
+ return (I::GetInstanceType(obj) < I::kFirstNonstringType);
+}
+
+
+Number* Number::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+ CheckCast(value);
+#endif
+ return static_cast<Number*>(value);
+}
+
+
+Integer* Integer::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+ CheckCast(value);
+#endif
+ return static_cast<Integer*>(value);
+}
+
+
+Date* Date::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+ CheckCast(value);
+#endif
+ return static_cast<Date*>(value);
+}
+
+
+Object* Object::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+ CheckCast(value);
+#endif
+ return static_cast<Object*>(value);
+}
+
+
+Array* Array::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+ CheckCast(value);
+#endif
+ return static_cast<Array*>(value);
+}
+
+
+Function* Function::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+ CheckCast(value);
+#endif
+ return static_cast<Function*>(value);
+}
+
+
+External* External::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+ CheckCast(value);
+#endif
+ return static_cast<External*>(value);
+}
+
+
+Local<Value> AccessorInfo::Data() const {
+ return Local<Value>(reinterpret_cast<Value*>(&args_[-2]));
+}
+
+
+Local<Object> AccessorInfo::This() const {
+ return Local<Object>(reinterpret_cast<Object*>(&args_[0]));
+}
+
+
+Local<Object> AccessorInfo::Holder() const {
+ return Local<Object>(reinterpret_cast<Object*>(&args_[-1]));
+}
+
+
/**
* \example shell.cc
* A simple shell that takes a list of expressions on the
@@ -2464,8 +3679,7 @@ void Template::Set(const char* name, v8::Handle<Data> value) { } // namespace v8
-#undef EXPORT
-#undef EXPORT_INLINE
+#undef V8EXPORT
#undef TYPE_CHECK
|