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f6c6d713b4
v8/src/api.cc
bmeurer f6c6d713b4 [es6] Implement spec compliant ToPrimitive in the runtime. 
This is the first step towards a spec compliant ToPrimitive
implementation (and therefore spec compliant ToNumber, ToString,
ToName, and friends).  It adds support for the @@toPrimitive
symbol that was introduced with ES2015, and also adds the new
Symbol.prototype[@@toPrimitive] and Date.prototype[@@toPrimitive]
initial properties.

There are now runtime functions for %ToPrimitive, %ToNumber and
%ToString, which do the right thing and should be used as fallbacks
instead of the hairy runtime.js implementations.  I will do the
same for the other conversion operations mentioned by the spec in
follow up CLs.  Once everything is in place we can look into
optimizing things further, so that we don't always call into the
runtime.

Also fixed Date.prototype.toJSON to be spec compliant.

R=mstarzinger@chromium.org, yangguo@chromium.org
BUG=v8:4307
LOG=y

Review URL: https://codereview.chromium.org/1306303003

Cr-Commit-Position: refs/heads/master@{#30434}
2015-08-28 09:21:43 +00:00

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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/api.h"
#include <string.h> // For memcpy, strlen.
#ifdef V8_USE_ADDRESS_SANITIZER
#include <sanitizer/asan_interface.h>
#endif // V8_USE_ADDRESS_SANITIZER
#include <cmath> // For isnan.
#include "include/v8-debug.h"
#include "include/v8-profiler.h"
#include "include/v8-testing.h"
#include "src/api-natives.h"
#include "src/assert-scope.h"
#include "src/background-parsing-task.h"
#include "src/base/functional.h"
#include "src/base/platform/platform.h"
#include "src/base/platform/time.h"
#include "src/base/utils/random-number-generator.h"
#include "src/bootstrapper.h"
#include "src/char-predicates-inl.h"
#include "src/code-stubs.h"
#include "src/compiler.h"
#include "src/context-measure.h"
#include "src/contexts.h"
#include "src/conversions-inl.h"
#include "src/counters.h"
#include "src/cpu-profiler.h"
#include "src/debug/debug.h"
#include "src/deoptimizer.h"
#include "src/execution.h"
#include "src/global-handles.h"
#include "src/heap-profiler.h"
#include "src/heap-snapshot-generator-inl.h"
#include "src/icu_util.h"
#include "src/json-parser.h"
#include "src/messages.h"
#include "src/parser.h"
#include "src/pending-compilation-error-handler.h"
#include "src/profile-generator-inl.h"
#include "src/property.h"
#include "src/property-details.h"
#include "src/prototype.h"
#include "src/runtime/runtime.h"
#include "src/runtime-profiler.h"
#include "src/sampler.h"
#include "src/scanner-character-streams.h"
#include "src/simulator.h"
#include "src/snapshot/natives.h"
#include "src/snapshot/snapshot.h"
#include "src/startup-data-util.h"
#include "src/unicode-inl.h"
#include "src/v8.h"
#include "src/v8threads.h"
#include "src/version.h"
#include "src/vm-state-inl.h"
namespace v8 {
#define LOG_API(isolate, expr) LOG(isolate, ApiEntryCall(expr))
#define ENTER_V8(isolate) i::VMState<v8::OTHER> __state__((isolate))
#define PREPARE_FOR_EXECUTION_GENERIC(isolate, context, function_name, \
bailout_value, HandleScopeClass, \
do_callback) \
if (IsExecutionTerminatingCheck(isolate)) { \
return bailout_value; \
} \
HandleScopeClass handle_scope(isolate); \
CallDepthScope call_depth_scope(isolate, context, do_callback); \
LOG_API(isolate, function_name); \
ENTER_V8(isolate); \
bool has_pending_exception = false
#define PREPARE_FOR_EXECUTION_WITH_CONTEXT( \
context, function_name, bailout_value, HandleScopeClass, do_callback) \
auto isolate = context.IsEmpty() \
? i::Isolate::Current() \
: reinterpret_cast<i::Isolate*>(context->GetIsolate()); \
PREPARE_FOR_EXECUTION_GENERIC(isolate, context, function_name, \
bailout_value, HandleScopeClass, do_callback);
#define PREPARE_FOR_EXECUTION_WITH_ISOLATE(isolate, function_name, T) \
PREPARE_FOR_EXECUTION_GENERIC(isolate, Local<Context>(), function_name, \
MaybeLocal<T>(), InternalEscapableScope, \
false);
#define PREPARE_FOR_EXECUTION(context, function_name, T) \
PREPARE_FOR_EXECUTION_WITH_CONTEXT(context, function_name, MaybeLocal<T>(), \
InternalEscapableScope, false)
#define PREPARE_FOR_EXECUTION_WITH_CALLBACK(context, function_name, T) \
PREPARE_FOR_EXECUTION_WITH_CONTEXT(context, function_name, MaybeLocal<T>(), \
InternalEscapableScope, true)
#define PREPARE_FOR_EXECUTION_PRIMITIVE(context, function_name, T) \
PREPARE_FOR_EXECUTION_WITH_CONTEXT(context, function_name, Nothing<T>(), \
i::HandleScope, false)
#define EXCEPTION_BAILOUT_CHECK_SCOPED(isolate, value) \
do { \
if (has_pending_exception) { \
call_depth_scope.Escape(); \
return value; \
} \
} while (false)
#define RETURN_ON_FAILED_EXECUTION(T) \
EXCEPTION_BAILOUT_CHECK_SCOPED(isolate, MaybeLocal<T>())
#define RETURN_ON_FAILED_EXECUTION_PRIMITIVE(T) \
EXCEPTION_BAILOUT_CHECK_SCOPED(isolate, Nothing<T>())
#define RETURN_TO_LOCAL_UNCHECKED(maybe_local, T) \
return maybe_local.FromMaybe(Local<T>());
#define RETURN_ESCAPED(value) return handle_scope.Escape(value);
namespace {
Local<Context> ContextFromHeapObject(i::Handle<i::Object> obj) {
return reinterpret_cast<v8::Isolate*>(i::HeapObject::cast(*obj)->GetIsolate())
->GetCurrentContext();
}
class InternalEscapableScope : public v8::EscapableHandleScope {
public:
explicit inline InternalEscapableScope(i::Isolate* isolate)
: v8::EscapableHandleScope(reinterpret_cast<v8::Isolate*>(isolate)) {}
};
class CallDepthScope {
public:
explicit CallDepthScope(i::Isolate* isolate, Local<Context> context,
bool do_callback)
: isolate_(isolate),
context_(context),
escaped_(false),
do_callback_(do_callback) {
// TODO(dcarney): remove this when blink stops crashing.
DCHECK(!isolate_->external_caught_exception());
isolate_->handle_scope_implementer()->IncrementCallDepth();
if (!context_.IsEmpty()) context_->Enter();
}
~CallDepthScope() {
if (!context_.IsEmpty()) context_->Exit();
if (!escaped_) isolate_->handle_scope_implementer()->DecrementCallDepth();
if (do_callback_) isolate_->FireCallCompletedCallback();
}
void Escape() {
DCHECK(!escaped_);
escaped_ = true;
auto handle_scope_implementer = isolate_->handle_scope_implementer();
handle_scope_implementer->DecrementCallDepth();
bool call_depth_is_zero = handle_scope_implementer->CallDepthIsZero();
isolate_->OptionalRescheduleException(call_depth_is_zero);
}
private:
i::Isolate* const isolate_;
Local<Context> context_;
bool escaped_;
bool do_callback_;
};
} // namespace
static ScriptOrigin GetScriptOriginForScript(i::Isolate* isolate,
i::Handle<i::Script> script) {
i::Handle<i::Object> scriptName(i::Script::GetNameOrSourceURL(script));
i::Handle<i::Object> source_map_url(script->source_mapping_url(), isolate);
v8::Isolate* v8_isolate =
reinterpret_cast<v8::Isolate*>(script->GetIsolate());
ScriptOriginOptions options(script->origin_options());
v8::ScriptOrigin origin(
Utils::ToLocal(scriptName),
v8::Integer::New(v8_isolate, script->line_offset()->value()),
v8::Integer::New(v8_isolate, script->column_offset()->value()),
v8::Boolean::New(v8_isolate, options.IsSharedCrossOrigin()),
v8::Integer::New(v8_isolate, script->id()->value()),
v8::Boolean::New(v8_isolate, options.IsEmbedderDebugScript()),
Utils::ToLocal(source_map_url),
v8::Boolean::New(v8_isolate, options.IsOpaque()));
return origin;
}
// --- E x c e p t i o n B e h a v i o r ---
void i::FatalProcessOutOfMemory(const char* location) {
i::V8::FatalProcessOutOfMemory(location, false);
}
// When V8 cannot allocated memory FatalProcessOutOfMemory is called.
// The default fatal error handler is called and execution is stopped.
void i::V8::FatalProcessOutOfMemory(const char* location, bool take_snapshot) {
i::Isolate* isolate = i::Isolate::Current();
char last_few_messages[Heap::kTraceRingBufferSize + 1];
char js_stacktrace[Heap::kStacktraceBufferSize + 1];
memset(last_few_messages, 0, Heap::kTraceRingBufferSize + 1);
memset(js_stacktrace, 0, Heap::kStacktraceBufferSize + 1);
i::HeapStats heap_stats;
int start_marker;
heap_stats.start_marker = &start_marker;
int new_space_size;
heap_stats.new_space_size = &new_space_size;
int new_space_capacity;
heap_stats.new_space_capacity = &new_space_capacity;
intptr_t old_space_size;
heap_stats.old_space_size = &old_space_size;
intptr_t old_space_capacity;
heap_stats.old_space_capacity = &old_space_capacity;
intptr_t code_space_size;
heap_stats.code_space_size = &code_space_size;
intptr_t code_space_capacity;
heap_stats.code_space_capacity = &code_space_capacity;
intptr_t map_space_size;
heap_stats.map_space_size = &map_space_size;
intptr_t map_space_capacity;
heap_stats.map_space_capacity = &map_space_capacity;
intptr_t lo_space_size;
heap_stats.lo_space_size = &lo_space_size;
int global_handle_count;
heap_stats.global_handle_count = &global_handle_count;
int weak_global_handle_count;
heap_stats.weak_global_handle_count = &weak_global_handle_count;
int pending_global_handle_count;
heap_stats.pending_global_handle_count = &pending_global_handle_count;
int near_death_global_handle_count;
heap_stats.near_death_global_handle_count = &near_death_global_handle_count;
int free_global_handle_count;
heap_stats.free_global_handle_count = &free_global_handle_count;
intptr_t memory_allocator_size;
heap_stats.memory_allocator_size = &memory_allocator_size;
intptr_t memory_allocator_capacity;
heap_stats.memory_allocator_capacity = &memory_allocator_capacity;
int objects_per_type[LAST_TYPE + 1] = {0};
heap_stats.objects_per_type = objects_per_type;
int size_per_type[LAST_TYPE + 1] = {0};
heap_stats.size_per_type = size_per_type;
int os_error;
heap_stats.os_error = &os_error;
heap_stats.last_few_messages = last_few_messages;
heap_stats.js_stacktrace = js_stacktrace;
int end_marker;
heap_stats.end_marker = &end_marker;
if (isolate->heap()->HasBeenSetUp()) {
// BUG(1718): Don't use the take_snapshot since we don't support
// HeapIterator here without doing a special GC.
isolate->heap()->RecordStats(&heap_stats, false);
char* first_newline = strchr(last_few_messages, '\n');
if (first_newline == NULL || first_newline[1] == '\0')
first_newline = last_few_messages;
PrintF("\n<--- Last few GCs --->\n%s\n", first_newline);
PrintF("\n<--- JS stacktrace --->\n%s\n", js_stacktrace);
}
Utils::ApiCheck(false, location, "Allocation failed - process out of memory");
// If the fatal error handler returns, we stop execution.
FATAL("API fatal error handler returned after process out of memory");
}
void Utils::ReportApiFailure(const char* location, const char* message) {
i::Isolate* isolate = i::Isolate::Current();
FatalErrorCallback callback = isolate->exception_behavior();
if (callback == NULL) {
base::OS::PrintError("\n#\n# Fatal error in %s\n# %s\n#\n\n", location,
message);
base::OS::Abort();
} else {
callback(location, message);
}
isolate->SignalFatalError();
}
static inline bool IsExecutionTerminatingCheck(i::Isolate* isolate) {
if (isolate->has_scheduled_exception()) {
return isolate->scheduled_exception() ==
isolate->heap()->termination_exception();
}
return false;
}
void V8::SetNativesDataBlob(StartupData* natives_blob) {
i::V8::SetNativesBlob(natives_blob);
}
void V8::SetSnapshotDataBlob(StartupData* snapshot_blob) {
i::V8::SetSnapshotBlob(snapshot_blob);
}
bool RunExtraCode(Isolate* isolate, Local<Context> context,
const char* utf8_source) {
// Run custom script if provided.
base::ElapsedTimer timer;
timer.Start();
TryCatch try_catch(isolate);
Local<String> source_string;
if (!String::NewFromUtf8(isolate, utf8_source, NewStringType::kNormal)
.ToLocal(&source_string)) {
return false;
}
Local<String> resource_name =
String::NewFromUtf8(isolate, "<embedded script>", NewStringType::kNormal)
.ToLocalChecked();
ScriptOrigin origin(resource_name);
ScriptCompiler::Source source(source_string, origin);
Local<Script> script;
if (!ScriptCompiler::Compile(context, &source).ToLocal(&script)) return false;
if (script->Run(context).IsEmpty()) return false;
if (i::FLAG_profile_deserialization) {
i::PrintF("Executing custom snapshot script took %0.3f ms\n",
timer.Elapsed().InMillisecondsF());
}
timer.Stop();
CHECK(!try_catch.HasCaught());
return true;
}
namespace {
class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
public:
virtual void* Allocate(size_t length) {
void* data = AllocateUninitialized(length);
return data == NULL ? data : memset(data, 0, length);
}
virtual void* AllocateUninitialized(size_t length) { return malloc(length); }
virtual void Free(void* data, size_t) { free(data); }
};
} // namespace
StartupData V8::CreateSnapshotDataBlob(const char* custom_source) {
i::Isolate* internal_isolate = new i::Isolate(true);
ArrayBufferAllocator allocator;
internal_isolate->set_array_buffer_allocator(&allocator);
Isolate* isolate = reinterpret_cast<Isolate*>(internal_isolate);
StartupData result = {NULL, 0};
{
base::ElapsedTimer timer;
timer.Start();
Isolate::Scope isolate_scope(isolate);
internal_isolate->Init(NULL);
Persistent<Context> context;
i::Snapshot::Metadata metadata;
{
HandleScope handle_scope(isolate);
Local<Context> new_context = Context::New(isolate);
context.Reset(isolate, new_context);
if (custom_source != NULL) {
metadata.set_embeds_script(true);
Context::Scope context_scope(new_context);
if (!RunExtraCode(isolate, new_context, custom_source)) context.Reset();
}
}
if (!context.IsEmpty()) {
// If we don't do this then we end up with a stray root pointing at the
// context even after we have disposed of the context.
internal_isolate->heap()->CollectAllAvailableGarbage("mksnapshot");
// GC may have cleared weak cells, so compact any WeakFixedArrays
// found on the heap.
i::HeapIterator iterator(internal_isolate->heap(),
i::HeapIterator::kFilterUnreachable);
for (i::HeapObject* o = iterator.next(); o != NULL; o = iterator.next()) {
if (o->IsPrototypeInfo()) {
i::Object* prototype_users =
i::PrototypeInfo::cast(o)->prototype_users();
if (prototype_users->IsWeakFixedArray()) {
i::WeakFixedArray* array = i::WeakFixedArray::cast(prototype_users);
array->Compact<i::JSObject::PrototypeRegistryCompactionCallback>();
}
} else if (o->IsScript()) {
i::Object* shared_list = i::Script::cast(o)->shared_function_infos();
if (shared_list->IsWeakFixedArray()) {
i::WeakFixedArray* array = i::WeakFixedArray::cast(shared_list);
array->Compact<i::WeakFixedArray::NullCallback>();
}
}
}
i::Object* raw_context = *v8::Utils::OpenPersistent(context);
context.Reset();
i::SnapshotByteSink snapshot_sink;
i::StartupSerializer ser(internal_isolate, &snapshot_sink);
ser.SerializeStrongReferences();
i::SnapshotByteSink context_sink;
i::PartialSerializer context_ser(internal_isolate, &ser, &context_sink);
context_ser.Serialize(&raw_context);
ser.SerializeWeakReferencesAndDeferred();
result = i::Snapshot::CreateSnapshotBlob(ser, context_ser, metadata);
}
if (i::FLAG_profile_deserialization) {
i::PrintF("Creating snapshot took %0.3f ms\n",
timer.Elapsed().InMillisecondsF());
}
timer.Stop();
}
isolate->Dispose();
return result;
}
void V8::SetFlagsFromString(const char* str, int length) {
i::FlagList::SetFlagsFromString(str, length);
}
void V8::SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags) {
i::FlagList::SetFlagsFromCommandLine(argc, argv, remove_flags);
}
RegisteredExtension* RegisteredExtension::first_extension_ = NULL;
RegisteredExtension::RegisteredExtension(Extension* extension)
: extension_(extension) { }
void RegisteredExtension::Register(RegisteredExtension* that) {
that->next_ = first_extension_;
first_extension_ = that;
}
void RegisteredExtension::UnregisterAll() {
RegisteredExtension* re = first_extension_;
while (re != NULL) {
RegisteredExtension* next = re->next();
delete re;
re = next;
}
first_extension_ = NULL;
}
void RegisterExtension(Extension* that) {
RegisteredExtension* extension = new RegisteredExtension(that);
RegisteredExtension::Register(extension);
}
Extension::Extension(const char* name,
const char* source,
int dep_count,
const char** deps,
int source_length)
: name_(name),
source_length_(source_length >= 0 ?
source_length :
(source ? static_cast<int>(strlen(source)) : 0)),
source_(source, source_length_),
dep_count_(dep_count),
deps_(deps),
auto_enable_(false) {
CHECK(source != NULL || source_length_ == 0);
}
ResourceConstraints::ResourceConstraints()
: max_semi_space_size_(0),
max_old_space_size_(0),
max_executable_size_(0),
stack_limit_(NULL),
code_range_size_(0) { }
void ResourceConstraints::ConfigureDefaults(uint64_t physical_memory,
uint64_t virtual_memory_limit) {
#if V8_OS_ANDROID
// Android has higher physical memory requirements before raising the maximum
// heap size limits since it has no swap space.
const uint64_t low_limit = 512ul * i::MB;
const uint64_t medium_limit = 1ul * i::GB;
const uint64_t high_limit = 2ul * i::GB;
#else
const uint64_t low_limit = 512ul * i::MB;
const uint64_t medium_limit = 768ul * i::MB;
const uint64_t high_limit = 1ul * i::GB;
#endif
if (physical_memory <= low_limit) {
set_max_semi_space_size(i::Heap::kMaxSemiSpaceSizeLowMemoryDevice);
set_max_old_space_size(i::Heap::kMaxOldSpaceSizeLowMemoryDevice);
set_max_executable_size(i::Heap::kMaxExecutableSizeLowMemoryDevice);
} else if (physical_memory <= medium_limit) {
set_max_semi_space_size(i::Heap::kMaxSemiSpaceSizeMediumMemoryDevice);
set_max_old_space_size(i::Heap::kMaxOldSpaceSizeMediumMemoryDevice);
set_max_executable_size(i::Heap::kMaxExecutableSizeMediumMemoryDevice);
} else if (physical_memory <= high_limit) {
set_max_semi_space_size(i::Heap::kMaxSemiSpaceSizeHighMemoryDevice);
set_max_old_space_size(i::Heap::kMaxOldSpaceSizeHighMemoryDevice);
set_max_executable_size(i::Heap::kMaxExecutableSizeHighMemoryDevice);
} else {
set_max_semi_space_size(i::Heap::kMaxSemiSpaceSizeHugeMemoryDevice);
set_max_old_space_size(i::Heap::kMaxOldSpaceSizeHugeMemoryDevice);
set_max_executable_size(i::Heap::kMaxExecutableSizeHugeMemoryDevice);
}
if (virtual_memory_limit > 0 && i::kRequiresCodeRange) {
// Reserve no more than 1/8 of the memory for the code range, but at most
// kMaximalCodeRangeSize.
set_code_range_size(
i::Min(i::kMaximalCodeRangeSize / i::MB,
static_cast<size_t>((virtual_memory_limit >> 3) / i::MB)));
}
}
void SetResourceConstraints(i::Isolate* isolate,
const ResourceConstraints& constraints) {
int semi_space_size = constraints.max_semi_space_size();
int old_space_size = constraints.max_old_space_size();
int max_executable_size = constraints.max_executable_size();
size_t code_range_size = constraints.code_range_size();
if (semi_space_size != 0 || old_space_size != 0 ||
max_executable_size != 0 || code_range_size != 0) {
isolate->heap()->ConfigureHeap(semi_space_size, old_space_size,
max_executable_size, code_range_size);
}
if (constraints.stack_limit() != NULL) {
uintptr_t limit = reinterpret_cast<uintptr_t>(constraints.stack_limit());
isolate->stack_guard()->SetStackLimit(limit);
}
}
i::Object** V8::GlobalizeReference(i::Isolate* isolate, i::Object** obj) {
LOG_API(isolate, "Persistent::New");
i::Handle<i::Object> result = isolate->global_handles()->Create(*obj);
#ifdef VERIFY_HEAP
if (i::FLAG_verify_heap) {
(*obj)->ObjectVerify();
}
#endif // VERIFY_HEAP
return result.location();
}
i::Object** V8::CopyPersistent(i::Object** obj) {
i::Handle<i::Object> result = i::GlobalHandles::CopyGlobal(obj);
#ifdef VERIFY_HEAP
if (i::FLAG_verify_heap) {
(*obj)->ObjectVerify();
}
#endif // VERIFY_HEAP
return result.location();
}
void V8::MakeWeak(i::Object** object, void* parameter,
WeakCallback weak_callback) {
i::GlobalHandles::MakeWeak(object, parameter, weak_callback);
}
void V8::MakeWeak(i::Object** object, void* parameter,
int internal_field_index1, int internal_field_index2,
WeakCallbackInfo<void>::Callback weak_callback) {
WeakCallbackType type = WeakCallbackType::kParameter;
if (internal_field_index1 == 0) {
if (internal_field_index2 == 1) {
type = WeakCallbackType::kInternalFields;
} else {
DCHECK_EQ(internal_field_index2, -1);
type = WeakCallbackType::kInternalFields;
}
} else {
DCHECK_EQ(internal_field_index1, -1);
DCHECK_EQ(internal_field_index2, -1);
}
i::GlobalHandles::MakeWeak(object, parameter, weak_callback, type);
}
void V8::MakeWeak(i::Object** object, void* parameter,
WeakCallbackInfo<void>::Callback weak_callback,
WeakCallbackType type) {
i::GlobalHandles::MakeWeak(object, parameter, weak_callback, type);
}
void* V8::ClearWeak(i::Object** obj) {
return i::GlobalHandles::ClearWeakness(obj);
}
void V8::DisposeGlobal(i::Object** obj) {
i::GlobalHandles::Destroy(obj);
}
void V8::Eternalize(Isolate* v8_isolate, Value* value, int* index) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
i::Object* object = *Utils::OpenHandle(value);
isolate->eternal_handles()->Create(isolate, object, index);
}
Local<Value> V8::GetEternal(Isolate* v8_isolate, int index) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
return Utils::ToLocal(isolate->eternal_handles()->Get(index));
}
void V8::FromJustIsNothing() {
Utils::ApiCheck(false, "v8::FromJust", "Maybe value is Nothing.");
}
void V8::ToLocalEmpty() {
Utils::ApiCheck(false, "v8::ToLocalChecked", "Empty MaybeLocal.");
}
void V8::InternalFieldOutOfBounds(int index) {
Utils::ApiCheck(0 <= index && index < kInternalFieldsInWeakCallback,
"WeakCallbackInfo::GetInternalField",
"Internal field out of bounds.");
}
// --- H a n d l e s ---
HandleScope::HandleScope(Isolate* isolate) {
Initialize(isolate);
}
void HandleScope::Initialize(Isolate* isolate) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
// We do not want to check the correct usage of the Locker class all over the
// place, so we do it only here: Without a HandleScope, an embedder can do
// almost nothing, so it is enough to check in this central place.
// We make an exception if the serializer is enabled, which means that the
// Isolate is exclusively used to create a snapshot.
Utils::ApiCheck(
!v8::Locker::IsActive() ||
internal_isolate->thread_manager()->IsLockedByCurrentThread() ||
internal_isolate->serializer_enabled(),
"HandleScope::HandleScope",
"Entering the V8 API without proper locking in place");
i::HandleScopeData* current = internal_isolate->handle_scope_data();
isolate_ = internal_isolate;
prev_next_ = current->next;
prev_limit_ = current->limit;
current->level++;
}
HandleScope::~HandleScope() {
i::HandleScope::CloseScope(isolate_, prev_next_, prev_limit_);
}
int HandleScope::NumberOfHandles(Isolate* isolate) {
return i::HandleScope::NumberOfHandles(
reinterpret_cast<i::Isolate*>(isolate));
}
i::Object** HandleScope::CreateHandle(i::Isolate* isolate, i::Object* value) {
return i::HandleScope::CreateHandle(isolate, value);
}
i::Object** HandleScope::CreateHandle(i::HeapObject* heap_object,
i::Object* value) {
DCHECK(heap_object->IsHeapObject());
return i::HandleScope::CreateHandle(heap_object->GetIsolate(), value);
}
EscapableHandleScope::EscapableHandleScope(Isolate* v8_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
escape_slot_ = CreateHandle(isolate, isolate->heap()->the_hole_value());
Initialize(v8_isolate);
}
i::Object** EscapableHandleScope::Escape(i::Object** escape_value) {
i::Heap* heap = reinterpret_cast<i::Isolate*>(GetIsolate())->heap();
Utils::ApiCheck(*escape_slot_ == heap->the_hole_value(),
"EscapeableHandleScope::Escape",
"Escape value set twice");
if (escape_value == NULL) {
*escape_slot_ = heap->undefined_value();
return NULL;
}
*escape_slot_ = *escape_value;
return escape_slot_;
}
SealHandleScope::SealHandleScope(Isolate* isolate) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
isolate_ = internal_isolate;
i::HandleScopeData* current = internal_isolate->handle_scope_data();
prev_limit_ = current->limit;
current->limit = current->next;
prev_level_ = current->level;
current->level = 0;
}
SealHandleScope::~SealHandleScope() {
i::HandleScopeData* current = isolate_->handle_scope_data();
DCHECK_EQ(0, current->level);
current->level = prev_level_;
DCHECK_EQ(current->next, current->limit);
current->limit = prev_limit_;
}
void Context::Enter() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Isolate* isolate = env->GetIsolate();
ENTER_V8(isolate);
i::HandleScopeImplementer* impl = isolate->handle_scope_implementer();
impl->EnterContext(env);
impl->SaveContext(isolate->context());
isolate->set_context(*env);
}
void Context::Exit() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Isolate* isolate = env->GetIsolate();
ENTER_V8(isolate);
i::HandleScopeImplementer* impl = isolate->handle_scope_implementer();
if (!Utils::ApiCheck(impl->LastEnteredContextWas(env),
"v8::Context::Exit()",
"Cannot exit non-entered context")) {
return;
}
impl->LeaveContext();
isolate->set_context(impl->RestoreContext());
}
static void* DecodeSmiToAligned(i::Object* value, const char* location) {
Utils::ApiCheck(value->IsSmi(), location, "Not a Smi");
return reinterpret_cast<void*>(value);
}
static i::Smi* EncodeAlignedAsSmi(void* value, const char* location) {
i::Smi* smi = reinterpret_cast<i::Smi*>(value);
Utils::ApiCheck(smi->IsSmi(), location, "Pointer is not aligned");
return smi;
}
static i::Handle<i::FixedArray> EmbedderDataFor(Context* context,
int index,
bool can_grow,
const char* location) {
i::Handle<i::Context> env = Utils::OpenHandle(context);
i::Isolate* isolate = env->GetIsolate();
bool ok =
Utils::ApiCheck(env->IsNativeContext(),
location,
"Not a native context") &&
Utils::ApiCheck(index >= 0, location, "Negative index");
if (!ok) return i::Handle<i::FixedArray>();
i::Handle<i::FixedArray> data(env->embedder_data());
if (index < data->length()) return data;
if (!Utils::ApiCheck(can_grow, location, "Index too large")) {
return i::Handle<i::FixedArray>();
}
int new_size = i::Max(index, data->length() << 1) + 1;
int grow_by = new_size - data->length();
data = isolate->factory()->CopyFixedArrayAndGrow(data, grow_by);
env->set_embedder_data(*data);
return data;
}
v8::Local<v8::Value> Context::SlowGetEmbedderData(int index) {
const char* location = "v8::Context::GetEmbedderData()";
i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, false, location);
if (data.is_null()) return Local<Value>();
i::Handle<i::Object> result(data->get(index), data->GetIsolate());
return Utils::ToLocal(result);
}
void Context::SetEmbedderData(int index, v8::Local<Value> value) {
const char* location = "v8::Context::SetEmbedderData()";
i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, true, location);
if (data.is_null()) return;
i::Handle<i::Object> val = Utils::OpenHandle(*value);
data->set(index, *val);
DCHECK_EQ(*Utils::OpenHandle(*value),
*Utils::OpenHandle(*GetEmbedderData(index)));
}
void* Context::SlowGetAlignedPointerFromEmbedderData(int index) {
const char* location = "v8::Context::GetAlignedPointerFromEmbedderData()";
i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, false, location);
if (data.is_null()) return NULL;
return DecodeSmiToAligned(data->get(index), location);
}
void Context::SetAlignedPointerInEmbedderData(int index, void* value) {
const char* location = "v8::Context::SetAlignedPointerInEmbedderData()";
i::Handle<i::FixedArray> data = EmbedderDataFor(this, index, true, location);
data->set(index, EncodeAlignedAsSmi(value, location));
DCHECK_EQ(value, GetAlignedPointerFromEmbedderData(index));
}
// --- N e a n d e r ---
// A constructor cannot easily return an error value, therefore it is necessary
// to check for a dead VM with ON_BAILOUT before constructing any Neander
// objects. To remind you about this there is no HandleScope in the
// NeanderObject constructor. When you add one to the site calling the
// constructor you should check that you ensured the VM was not dead first.
NeanderObject::NeanderObject(v8::internal::Isolate* isolate, int size) {
ENTER_V8(isolate);
value_ = isolate->factory()->NewNeanderObject();
i::Handle<i::FixedArray> elements = isolate->factory()->NewFixedArray(size);
value_->set_elements(*elements);
}
int NeanderObject::size() {
return i::FixedArray::cast(value_->elements())->length();
}
NeanderArray::NeanderArray(v8::internal::Isolate* isolate) : obj_(isolate, 2) {
obj_.set(0, i::Smi::FromInt(0));
}
int NeanderArray::length() {
return i::Smi::cast(obj_.get(0))->value();
}
i::Object* NeanderArray::get(int offset) {
DCHECK(0 <= offset);
DCHECK(offset < length());
return obj_.get(offset + 1);
}
// This method cannot easily return an error value, therefore it is necessary
// to check for a dead VM with ON_BAILOUT before calling it. To remind you
// about this there is no HandleScope in this method. When you add one to the
// site calling this method you should check that you ensured the VM was not
// dead first.
void NeanderArray::add(i::Isolate* isolate, i::Handle<i::Object> value) {
int length = this->length();
int size = obj_.size();
if (length == size - 1) {
i::Factory* factory = isolate->factory();
i::Handle<i::FixedArray> new_elms = factory->NewFixedArray(2 * size);
for (int i = 0; i < length; i++)
new_elms->set(i + 1, get(i));
obj_.value()->set_elements(*new_elms);
}
obj_.set(length + 1, *value);
obj_.set(0, i::Smi::FromInt(length + 1));
}
void NeanderArray::set(int index, i::Object* value) {
if (index < 0 || index >= this->length()) return;
obj_.set(index + 1, value);
}
// --- T e m p l a t e ---
static void InitializeTemplate(i::Handle<i::TemplateInfo> that, int type) {
that->set_number_of_properties(0);
that->set_tag(i::Smi::FromInt(type));
}
void Template::Set(v8::Local<Name> name, v8::Local<Data> value,
v8::PropertyAttribute attribute) {
auto templ = Utils::OpenHandle(this);
i::Isolate* isolate = templ->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
// TODO(dcarney): split api to allow values of v8::Value or v8::TemplateInfo.
i::ApiNatives::AddDataProperty(isolate, templ, Utils::OpenHandle(*name),
Utils::OpenHandle(*value),
static_cast<PropertyAttributes>(attribute));
}
void Template::SetAccessorProperty(
v8::Local<v8::Name> name,
v8::Local<FunctionTemplate> getter,
v8::Local<FunctionTemplate> setter,
v8::PropertyAttribute attribute,
v8::AccessControl access_control) {
// TODO(verwaest): Remove |access_control|.
DCHECK_EQ(v8::DEFAULT, access_control);
auto templ = Utils::OpenHandle(this);
auto isolate = templ->GetIsolate();
ENTER_V8(isolate);
DCHECK(!name.IsEmpty());
DCHECK(!getter.IsEmpty() || !setter.IsEmpty());
i::HandleScope scope(isolate);
i::ApiNatives::AddAccessorProperty(
isolate, templ, Utils::OpenHandle(*name),
Utils::OpenHandle(*getter, true), Utils::OpenHandle(*setter, true),
static_cast<PropertyAttributes>(attribute));
}
// --- F u n c t i o n T e m p l a t e ---
static void InitializeFunctionTemplate(
i::Handle<i::FunctionTemplateInfo> info) {
InitializeTemplate(info, Consts::FUNCTION_TEMPLATE);
info->set_flag(0);
}
Local<ObjectTemplate> FunctionTemplate::PrototypeTemplate() {
i::Isolate* i_isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(i_isolate);
i::Handle<i::Object> result(Utils::OpenHandle(this)->prototype_template(),
i_isolate);
if (result->IsUndefined()) {
v8::Isolate* isolate = reinterpret_cast<v8::Isolate*>(i_isolate);
result = Utils::OpenHandle(*ObjectTemplate::New(isolate));
Utils::OpenHandle(this)->set_prototype_template(*result);
}
return ToApiHandle<ObjectTemplate>(result);
}
static void EnsureNotInstantiated(i::Handle<i::FunctionTemplateInfo> info,
const char* func) {
Utils::ApiCheck(!info->instantiated(), func,
"FunctionTemplate already instantiated");
}
void FunctionTemplate::Inherit(v8::Local<FunctionTemplate> value) {
auto info = Utils::OpenHandle(this);
EnsureNotInstantiated(info, "v8::FunctionTemplate::Inherit");
i::Isolate* isolate = info->GetIsolate();
ENTER_V8(isolate);
info->set_parent_template(*Utils::OpenHandle(*value));
}
static Local<FunctionTemplate> FunctionTemplateNew(
i::Isolate* isolate, FunctionCallback callback, v8::Local<Value> data,
v8::Local<Signature> signature, int length, bool do_not_cache) {
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::FUNCTION_TEMPLATE_INFO_TYPE);
i::Handle<i::FunctionTemplateInfo> obj =
i::Handle<i::FunctionTemplateInfo>::cast(struct_obj);
InitializeFunctionTemplate(obj);
obj->set_do_not_cache(do_not_cache);
int next_serial_number = 0;
if (!do_not_cache) {
next_serial_number = isolate->next_serial_number() + 1;
isolate->set_next_serial_number(next_serial_number);
}
obj->set_serial_number(i::Smi::FromInt(next_serial_number));
if (callback != 0) {
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
Utils::ToLocal(obj)->SetCallHandler(callback, data);
}
obj->set_length(length);
obj->set_undetectable(false);
obj->set_needs_access_check(false);
obj->set_accept_any_receiver(true);
if (!signature.IsEmpty())
obj->set_signature(*Utils::OpenHandle(*signature));
return Utils::ToLocal(obj);
}
Local<FunctionTemplate> FunctionTemplate::New(Isolate* isolate,
FunctionCallback callback,
v8::Local<Value> data,
v8::Local<Signature> signature,
int length) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
// Changes to the environment cannot be captured in the snapshot. Expect no
// function templates when the isolate is created for serialization.
DCHECK(!i_isolate->serializer_enabled());
LOG_API(i_isolate, "FunctionTemplate::New");
ENTER_V8(i_isolate);
return FunctionTemplateNew(
i_isolate, callback, data, signature, length, false);
}
Local<Signature> Signature::New(Isolate* isolate,
Local<FunctionTemplate> receiver) {
return Utils::SignatureToLocal(Utils::OpenHandle(*receiver));
}
Local<AccessorSignature> AccessorSignature::New(
Isolate* isolate, Local<FunctionTemplate> receiver) {
return Utils::AccessorSignatureToLocal(Utils::OpenHandle(*receiver));
}
Local<TypeSwitch> TypeSwitch::New(Local<FunctionTemplate> type) {
Local<FunctionTemplate> types[1] = {type};
return TypeSwitch::New(1, types);
}
Local<TypeSwitch> TypeSwitch::New(int argc, Local<FunctionTemplate> types[]) {
i::Isolate* isolate = i::Isolate::Current();
LOG_API(isolate, "TypeSwitch::New");
ENTER_V8(isolate);
i::Handle<i::FixedArray> vector = isolate->factory()->NewFixedArray(argc);
for (int i = 0; i < argc; i++)
vector->set(i, *Utils::OpenHandle(*types[i]));
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::TYPE_SWITCH_INFO_TYPE);
i::Handle<i::TypeSwitchInfo> obj =
i::Handle<i::TypeSwitchInfo>::cast(struct_obj);
obj->set_types(*vector);
return Utils::ToLocal(obj);
}
int TypeSwitch::match(v8::Local<Value> value) {
i::Handle<i::TypeSwitchInfo> info = Utils::OpenHandle(this);
LOG_API(info->GetIsolate(), "TypeSwitch::match");
i::Handle<i::Object> obj = Utils::OpenHandle(*value);
i::FixedArray* types = i::FixedArray::cast(info->types());
for (int i = 0; i < types->length(); i++) {
if (i::FunctionTemplateInfo::cast(types->get(i))->IsTemplateFor(*obj))
return i + 1;
}
return 0;
}
#define SET_FIELD_WRAPPED(obj, setter, cdata) do { \
i::Handle<i::Object> foreign = FromCData(obj->GetIsolate(), cdata); \
(obj)->setter(*foreign); \
} while (false)
void FunctionTemplate::SetCallHandler(FunctionCallback callback,
v8::Local<Value> data) {
auto info = Utils::OpenHandle(this);
EnsureNotInstantiated(info, "v8::FunctionTemplate::SetCallHandler");
i::Isolate* isolate = info->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::CALL_HANDLER_INFO_TYPE);
i::Handle<i::CallHandlerInfo> obj =
i::Handle<i::CallHandlerInfo>::cast(struct_obj);
SET_FIELD_WRAPPED(obj, set_callback, callback);
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
obj->set_data(*Utils::OpenHandle(*data));
info->set_call_code(*obj);
}
static i::Handle<i::AccessorInfo> SetAccessorInfoProperties(
i::Handle<i::AccessorInfo> obj, v8::Local<Name> name,
v8::AccessControl settings, v8::PropertyAttribute attributes,
v8::Local<AccessorSignature> signature) {
obj->set_name(*Utils::OpenHandle(*name));
if (settings & ALL_CAN_READ) obj->set_all_can_read(true);
if (settings & ALL_CAN_WRITE) obj->set_all_can_write(true);
obj->set_property_attributes(static_cast<PropertyAttributes>(attributes));
if (!signature.IsEmpty()) {
obj->set_expected_receiver_type(*Utils::OpenHandle(*signature));
}
return obj;
}
template <typename Getter, typename Setter>
static i::Handle<i::AccessorInfo> MakeAccessorInfo(
v8::Local<Name> name, Getter getter, Setter setter, v8::Local<Value> data,
v8::AccessControl settings, v8::PropertyAttribute attributes,
v8::Local<AccessorSignature> signature) {
i::Isolate* isolate = Utils::OpenHandle(*name)->GetIsolate();
i::Handle<i::ExecutableAccessorInfo> obj =
isolate->factory()->NewExecutableAccessorInfo();
SET_FIELD_WRAPPED(obj, set_getter, getter);
SET_FIELD_WRAPPED(obj, set_setter, setter);
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
obj->set_data(*Utils::OpenHandle(*data));
return SetAccessorInfoProperties(obj, name, settings, attributes, signature);
}
Local<ObjectTemplate> FunctionTemplate::InstanceTemplate() {
i::Handle<i::FunctionTemplateInfo> handle = Utils::OpenHandle(this, true);
if (!Utils::ApiCheck(!handle.is_null(),
"v8::FunctionTemplate::InstanceTemplate()",
"Reading from empty handle")) {
return Local<ObjectTemplate>();
}
i::Isolate* isolate = handle->GetIsolate();
ENTER_V8(isolate);
if (handle->instance_template()->IsUndefined()) {
Local<ObjectTemplate> templ =
ObjectTemplate::New(isolate, ToApiHandle<FunctionTemplate>(handle));
handle->set_instance_template(*Utils::OpenHandle(*templ));
}
i::Handle<i::ObjectTemplateInfo> result(
i::ObjectTemplateInfo::cast(handle->instance_template()));
return Utils::ToLocal(result);
}
void FunctionTemplate::SetLength(int length) {
auto info = Utils::OpenHandle(this);
EnsureNotInstantiated(info, "v8::FunctionTemplate::SetLength");
auto isolate = info->GetIsolate();
ENTER_V8(isolate);
info->set_length(length);
}
void FunctionTemplate::SetClassName(Local<String> name) {
auto info = Utils::OpenHandle(this);
EnsureNotInstantiated(info, "v8::FunctionTemplate::SetClassName");
auto isolate = info->GetIsolate();
ENTER_V8(isolate);
info->set_class_name(*Utils::OpenHandle(*name));
}
void FunctionTemplate::SetAcceptAnyReceiver(bool value) {
auto info = Utils::OpenHandle(this);
EnsureNotInstantiated(info, "v8::FunctionTemplate::SetAcceptAnyReceiver");
auto isolate = info->GetIsolate();
ENTER_V8(isolate);
info->set_accept_any_receiver(value);
}
void FunctionTemplate::SetHiddenPrototype(bool value) {
auto info = Utils::OpenHandle(this);
EnsureNotInstantiated(info, "v8::FunctionTemplate::SetHiddenPrototype");
auto isolate = info->GetIsolate();
ENTER_V8(isolate);
info->set_hidden_prototype(value);
}
void FunctionTemplate::ReadOnlyPrototype() {
auto info = Utils::OpenHandle(this);
EnsureNotInstantiated(info, "v8::FunctionTemplate::ReadOnlyPrototype");
auto isolate = info->GetIsolate();
ENTER_V8(isolate);
info->set_read_only_prototype(true);
}
void FunctionTemplate::RemovePrototype() {
auto info = Utils::OpenHandle(this);
EnsureNotInstantiated(info, "v8::FunctionTemplate::RemovePrototype");
auto isolate = info->GetIsolate();
ENTER_V8(isolate);
info->set_remove_prototype(true);
}
// --- O b j e c t T e m p l a t e ---
Local<ObjectTemplate> ObjectTemplate::New(
Isolate* isolate, v8::Local<FunctionTemplate> constructor) {
return New(reinterpret_cast<i::Isolate*>(isolate), constructor);
}
Local<ObjectTemplate> ObjectTemplate::New() {
return New(i::Isolate::Current(), Local<FunctionTemplate>());
}
Local<ObjectTemplate> ObjectTemplate::New(
i::Isolate* isolate, v8::Local<FunctionTemplate> constructor) {
// Changes to the environment cannot be captured in the snapshot. Expect no
// object templates when the isolate is created for serialization.
DCHECK(!isolate->serializer_enabled());
LOG_API(isolate, "ObjectTemplate::New");
ENTER_V8(isolate);
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::OBJECT_TEMPLATE_INFO_TYPE);
i::Handle<i::ObjectTemplateInfo> obj =
i::Handle<i::ObjectTemplateInfo>::cast(struct_obj);
InitializeTemplate(obj, Consts::OBJECT_TEMPLATE);
if (!constructor.IsEmpty())
obj->set_constructor(*Utils::OpenHandle(*constructor));
obj->set_internal_field_count(i::Smi::FromInt(0));
return Utils::ToLocal(obj);
}
// Ensure that the object template has a constructor. If no
// constructor is available we create one.
static i::Handle<i::FunctionTemplateInfo> EnsureConstructor(
i::Isolate* isolate,
ObjectTemplate* object_template) {
i::Object* obj = Utils::OpenHandle(object_template)->constructor();
if (!obj ->IsUndefined()) {
i::FunctionTemplateInfo* info = i::FunctionTemplateInfo::cast(obj);
return i::Handle<i::FunctionTemplateInfo>(info, isolate);
}
Local<FunctionTemplate> templ =
FunctionTemplate::New(reinterpret_cast<Isolate*>(isolate));
i::Handle<i::FunctionTemplateInfo> constructor = Utils::OpenHandle(*templ);
constructor->set_instance_template(*Utils::OpenHandle(object_template));
Utils::OpenHandle(object_template)->set_constructor(*constructor);
return constructor;
}
static inline i::Handle<i::TemplateInfo> GetTemplateInfo(
i::Isolate* isolate,
Template* template_obj) {
return Utils::OpenHandle(template_obj);
}
// TODO(dcarney): remove this with ObjectTemplate::SetAccessor
static inline i::Handle<i::TemplateInfo> GetTemplateInfo(
i::Isolate* isolate,
ObjectTemplate* object_template) {
EnsureConstructor(isolate, object_template);
return Utils::OpenHandle(object_template);
}
template<typename Getter, typename Setter, typename Data, typename Template>
static bool TemplateSetAccessor(
Template* template_obj,
v8::Local<Name> name,
Getter getter,
Setter setter,
Data data,
AccessControl settings,
PropertyAttribute attribute,
v8::Local<AccessorSignature> signature) {
auto isolate = Utils::OpenHandle(template_obj)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
auto obj = MakeAccessorInfo(name, getter, setter, data, settings, attribute,
signature);
if (obj.is_null()) return false;
auto info = GetTemplateInfo(isolate, template_obj);
i::ApiNatives::AddNativeDataProperty(isolate, info, obj);
return true;
}
void Template::SetNativeDataProperty(v8::Local<String> name,
AccessorGetterCallback getter,
AccessorSetterCallback setter,
v8::Local<Value> data,
PropertyAttribute attribute,
v8::Local<AccessorSignature> signature,
AccessControl settings) {
TemplateSetAccessor(
this, name, getter, setter, data, settings, attribute, signature);
}
void Template::SetNativeDataProperty(v8::Local<Name> name,
AccessorNameGetterCallback getter,
AccessorNameSetterCallback setter,
v8::Local<Value> data,
PropertyAttribute attribute,
v8::Local<AccessorSignature> signature,
AccessControl settings) {
TemplateSetAccessor(
this, name, getter, setter, data, settings, attribute, signature);
}
void ObjectTemplate::SetAccessor(v8::Local<String> name,
AccessorGetterCallback getter,
AccessorSetterCallback setter,
v8::Local<Value> data, AccessControl settings,
PropertyAttribute attribute,
v8::Local<AccessorSignature> signature) {
TemplateSetAccessor(
this, name, getter, setter, data, settings, attribute, signature);
}
void ObjectTemplate::SetAccessor(v8::Local<Name> name,
AccessorNameGetterCallback getter,
AccessorNameSetterCallback setter,
v8::Local<Value> data, AccessControl settings,
PropertyAttribute attribute,
v8::Local<AccessorSignature> signature) {
TemplateSetAccessor(
this, name, getter, setter, data, settings, attribute, signature);
}
template <typename Getter, typename Setter, typename Query, typename Deleter,
typename Enumerator>
static void ObjectTemplateSetNamedPropertyHandler(ObjectTemplate* templ,
Getter getter, Setter setter,
Query query, Deleter remover,
Enumerator enumerator,
Local<Value> data,
PropertyHandlerFlags flags) {
i::Isolate* isolate = Utils::OpenHandle(templ)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, templ);
EnsureNotInstantiated(cons, "ObjectTemplateSetNamedPropertyHandler");
auto obj = i::Handle<i::InterceptorInfo>::cast(
isolate->factory()->NewStruct(i::INTERCEPTOR_INFO_TYPE));
if (getter != 0) SET_FIELD_WRAPPED(obj, set_getter, getter);
if (setter != 0) SET_FIELD_WRAPPED(obj, set_setter, setter);
if (query != 0) SET_FIELD_WRAPPED(obj, set_query, query);
if (remover != 0) SET_FIELD_WRAPPED(obj, set_deleter, remover);
if (enumerator != 0) SET_FIELD_WRAPPED(obj, set_enumerator, enumerator);
obj->set_flags(0);
obj->set_can_intercept_symbols(
!(static_cast<int>(flags) &
static_cast<int>(PropertyHandlerFlags::kOnlyInterceptStrings)));
obj->set_all_can_read(static_cast<int>(flags) &
static_cast<int>(PropertyHandlerFlags::kAllCanRead));
obj->set_non_masking(static_cast<int>(flags) &
static_cast<int>(PropertyHandlerFlags::kNonMasking));
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
obj->set_data(*Utils::OpenHandle(*data));
cons->set_named_property_handler(*obj);
}
void ObjectTemplate::SetNamedPropertyHandler(
NamedPropertyGetterCallback getter, NamedPropertySetterCallback setter,
NamedPropertyQueryCallback query, NamedPropertyDeleterCallback remover,
NamedPropertyEnumeratorCallback enumerator, Local<Value> data) {
ObjectTemplateSetNamedPropertyHandler(
this, getter, setter, query, remover, enumerator, data,
PropertyHandlerFlags::kOnlyInterceptStrings);
}
void ObjectTemplate::SetHandler(
const NamedPropertyHandlerConfiguration& config) {
ObjectTemplateSetNamedPropertyHandler(
this, config.getter, config.setter, config.query, config.deleter,
config.enumerator, config.data, config.flags);
}
void ObjectTemplate::MarkAsUndetectable() {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, this);
EnsureNotInstantiated(cons, "v8::ObjectTemplate::MarkAsUndetectable");
cons->set_undetectable(true);
}
void ObjectTemplate::SetAccessCheckCallbacks(
NamedSecurityCallback named_callback,
IndexedSecurityCallback indexed_callback, Local<Value> data) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, this);
EnsureNotInstantiated(cons, "v8::ObjectTemplate::SetAccessCheckCallbacks");
i::Handle<i::Struct> struct_info =
isolate->factory()->NewStruct(i::ACCESS_CHECK_INFO_TYPE);
i::Handle<i::AccessCheckInfo> info =
i::Handle<i::AccessCheckInfo>::cast(struct_info);
SET_FIELD_WRAPPED(info, set_named_callback, named_callback);
SET_FIELD_WRAPPED(info, set_indexed_callback, indexed_callback);
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
info->set_data(*Utils::OpenHandle(*data));
cons->set_access_check_info(*info);
cons->set_needs_access_check(true);
}
void ObjectTemplate::SetHandler(
const IndexedPropertyHandlerConfiguration& config) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, this);
EnsureNotInstantiated(cons, "v8::ObjectTemplate::SetHandler");
auto obj = i::Handle<i::InterceptorInfo>::cast(
isolate->factory()->NewStruct(i::INTERCEPTOR_INFO_TYPE));
if (config.getter != 0) SET_FIELD_WRAPPED(obj, set_getter, config.getter);
if (config.setter != 0) SET_FIELD_WRAPPED(obj, set_setter, config.setter);
if (config.query != 0) SET_FIELD_WRAPPED(obj, set_query, config.query);
if (config.deleter != 0) SET_FIELD_WRAPPED(obj, set_deleter, config.deleter);
if (config.enumerator != 0) {
SET_FIELD_WRAPPED(obj, set_enumerator, config.enumerator);
}
obj->set_flags(0);
obj->set_all_can_read(static_cast<int>(config.flags) &
static_cast<int>(PropertyHandlerFlags::kAllCanRead));
v8::Local<v8::Value> data = config.data;
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
obj->set_data(*Utils::OpenHandle(*data));
cons->set_indexed_property_handler(*obj);
}
void ObjectTemplate::SetCallAsFunctionHandler(FunctionCallback callback,
Local<Value> data) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, this);
EnsureNotInstantiated(cons, "v8::ObjectTemplate::SetCallAsFunctionHandler");
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::CALL_HANDLER_INFO_TYPE);
i::Handle<i::CallHandlerInfo> obj =
i::Handle<i::CallHandlerInfo>::cast(struct_obj);
SET_FIELD_WRAPPED(obj, set_callback, callback);
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
obj->set_data(*Utils::OpenHandle(*data));
cons->set_instance_call_handler(*obj);
}
int ObjectTemplate::InternalFieldCount() {
return i::Smi::cast(Utils::OpenHandle(this)->internal_field_count())->value();
}
void ObjectTemplate::SetInternalFieldCount(int value) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
if (!Utils::ApiCheck(i::Smi::IsValid(value),
"v8::ObjectTemplate::SetInternalFieldCount()",
"Invalid internal field count")) {
return;
}
ENTER_V8(isolate);
if (value > 0) {
// The internal field count is set by the constructor function's
// construct code, so we ensure that there is a constructor
// function to do the setting.
EnsureConstructor(isolate, this);
}
Utils::OpenHandle(this)->set_internal_field_count(i::Smi::FromInt(value));
}
// --- S c r i p t s ---
// Internally, UnboundScript is a SharedFunctionInfo, and Script is a
// JSFunction.
ScriptCompiler::CachedData::CachedData(const uint8_t* data_, int length_,
BufferPolicy buffer_policy_)
: data(data_),
length(length_),
rejected(false),
buffer_policy(buffer_policy_) {}
ScriptCompiler::CachedData::~CachedData() {
if (buffer_policy == BufferOwned) {
delete[] data;
}
}
bool ScriptCompiler::ExternalSourceStream::SetBookmark() { return false; }
void ScriptCompiler::ExternalSourceStream::ResetToBookmark() { UNREACHABLE(); }
ScriptCompiler::StreamedSource::StreamedSource(ExternalSourceStream* stream,
Encoding encoding)
: impl_(new i::StreamedSource(stream, encoding)) {}
ScriptCompiler::StreamedSource::~StreamedSource() { delete impl_; }
const ScriptCompiler::CachedData*
ScriptCompiler::StreamedSource::GetCachedData() const {
return impl_->cached_data.get();
}
Local<Script> UnboundScript::BindToCurrentContext() {
i::Handle<i::HeapObject> obj =
i::Handle<i::HeapObject>::cast(Utils::OpenHandle(this));
i::Handle<i::SharedFunctionInfo>
function_info(i::SharedFunctionInfo::cast(*obj), obj->GetIsolate());
i::Isolate* isolate = obj->GetIsolate();
i::ScopeInfo* scope_info = function_info->scope_info();
i::Handle<i::JSReceiver> global(isolate->native_context()->global_object());
for (int i = 0; i < scope_info->StrongModeFreeVariableCount(); ++i) {
i::Handle<i::String> name_string(scope_info->StrongModeFreeVariableName(i));
i::ScriptContextTable::LookupResult result;
i::Handle<i::ScriptContextTable> script_context_table(
isolate->native_context()->script_context_table());
if (!i::ScriptContextTable::Lookup(script_context_table, name_string,
&result)) {
i::Handle<i::Name> name(scope_info->StrongModeFreeVariableName(i));
Maybe<bool> has = i::JSReceiver::HasProperty(global, name);
if (has.IsJust() && !has.FromJust()) {
i::PendingCompilationErrorHandler pending_error_handler_;
pending_error_handler_.ReportMessageAt(
scope_info->StrongModeFreeVariableStartPosition(i),
scope_info->StrongModeFreeVariableEndPosition(i),
i::MessageTemplate::kStrongUnboundGlobal, name_string,
i::kReferenceError);
i::Handle<i::Script> script(i::Script::cast(function_info->script()));
pending_error_handler_.ThrowPendingError(isolate, script);
isolate->ReportPendingMessages();
isolate->OptionalRescheduleException(true);
return Local<Script>();
}
}
}
i::Handle<i::JSFunction> function =
obj->GetIsolate()->factory()->NewFunctionFromSharedFunctionInfo(
function_info, isolate->native_context());
return ToApiHandle<Script>(function);
}
int UnboundScript::GetId() {
i::Handle<i::HeapObject> obj =
i::Handle<i::HeapObject>::cast(Utils::OpenHandle(this));
i::Isolate* isolate = obj->GetIsolate();
LOG_API(isolate, "v8::UnboundScript::GetId");
i::HandleScope scope(isolate);
i::Handle<i::SharedFunctionInfo> function_info(
i::SharedFunctionInfo::cast(*obj));
i::Handle<i::Script> script(i::Script::cast(function_info->script()));
return script->id()->value();
}
int UnboundScript::GetLineNumber(int code_pos) {
i::Handle<i::SharedFunctionInfo> obj =
i::Handle<i::SharedFunctionInfo>::cast(Utils::OpenHandle(this));
i::Isolate* isolate = obj->GetIsolate();
LOG_API(isolate, "UnboundScript::GetLineNumber");
if (obj->script()->IsScript()) {
i::Handle<i::Script> script(i::Script::cast(obj->script()));
return i::Script::GetLineNumber(script, code_pos);
} else {
return -1;
}
}
Local<Value> UnboundScript::GetScriptName() {
i::Handle<i::SharedFunctionInfo> obj =
i::Handle<i::SharedFunctionInfo>::cast(Utils::OpenHandle(this));
i::Isolate* isolate = obj->GetIsolate();
LOG_API(isolate, "UnboundScript::GetName");
if (obj->script()->IsScript()) {
i::Object* name = i::Script::cast(obj->script())->name();
return Utils::ToLocal(i::Handle<i::Object>(name, isolate));
} else {
return Local<String>();
}
}
Local<Value> UnboundScript::GetSourceURL() {
i::Handle<i::SharedFunctionInfo> obj =
i::Handle<i::SharedFunctionInfo>::cast(Utils::OpenHandle(this));
i::Isolate* isolate = obj->GetIsolate();
LOG_API(isolate, "UnboundScript::GetSourceURL");
if (obj->script()->IsScript()) {
i::Object* url = i::Script::cast(obj->script())->source_url();
return Utils::ToLocal(i::Handle<i::Object>(url, isolate));
} else {
return Local<String>();
}
}
Local<Value> UnboundScript::GetSourceMappingURL() {
i::Handle<i::SharedFunctionInfo> obj =
i::Handle<i::SharedFunctionInfo>::cast(Utils::OpenHandle(this));
i::Isolate* isolate = obj->GetIsolate();
LOG_API(isolate, "UnboundScript::GetSourceMappingURL");
if (obj->script()->IsScript()) {
i::Object* url = i::Script::cast(obj->script())->source_mapping_url();
return Utils::ToLocal(i::Handle<i::Object>(url, isolate));
} else {
return Local<String>();
}
}
MaybeLocal<Value> Script::Run(Local<Context> context) {
PREPARE_FOR_EXECUTION_WITH_CALLBACK(context, "v8::Script::Run()", Value)
i::AggregatingHistogramTimerScope timer(isolate->counters()->compile_lazy());
i::TimerEventScope<i::TimerEventExecute> timer_scope(isolate);
auto fun = i::Handle<i::JSFunction>::cast(Utils::OpenHandle(this));
i::Handle<i::Object> receiver(isolate->global_proxy(), isolate);
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(i::Execution::Call(isolate, fun, receiver, 0, NULL),
&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
Local<Value> Script::Run() {
auto self = Utils::OpenHandle(this, true);
// If execution is terminating, Compile(..)->Run() requires this
// check.
if (self.is_null()) return Local<Value>();
auto context = ContextFromHeapObject(self);
RETURN_TO_LOCAL_UNCHECKED(Run(context), Value);
}
Local<UnboundScript> Script::GetUnboundScript() {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return ToApiHandle<UnboundScript>(
i::Handle<i::SharedFunctionInfo>(i::JSFunction::cast(*obj)->shared()));
}
MaybeLocal<UnboundScript> ScriptCompiler::CompileUnboundInternal(
Isolate* v8_isolate, Source* source, CompileOptions options,
bool is_module) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
PREPARE_FOR_EXECUTION_WITH_ISOLATE(
isolate, "v8::ScriptCompiler::CompileUnbound()", UnboundScript);
// Don't try to produce any kind of cache when the debugger is loaded.
if (isolate->debug()->is_loaded() &&
(options == kProduceParserCache || options == kProduceCodeCache)) {
options = kNoCompileOptions;
}
i::ScriptData* script_data = NULL;
if (options == kConsumeParserCache || options == kConsumeCodeCache) {
DCHECK(source->cached_data);
// ScriptData takes care of pointer-aligning the data.
script_data = new i::ScriptData(source->cached_data->data,
source->cached_data->length);
}
i::Handle<i::String> str = Utils::OpenHandle(*(source->source_string));
i::Handle<i::SharedFunctionInfo> result;
{
i::HistogramTimerScope total(isolate->counters()->compile_script(), true);
i::Handle<i::Object> name_obj;
i::Handle<i::Object> source_map_url;
int line_offset = 0;
int column_offset = 0;
if (!source->resource_name.IsEmpty()) {
name_obj = Utils::OpenHandle(*(source->resource_name));
}
if (!source->resource_line_offset.IsEmpty()) {
line_offset = static_cast<int>(source->resource_line_offset->Value());
}
if (!source->resource_column_offset.IsEmpty()) {
column_offset =
static_cast<int>(source->resource_column_offset->Value());
}
if (!source->source_map_url.IsEmpty()) {
source_map_url = Utils::OpenHandle(*(source->source_map_url));
}
result = i::Compiler::CompileScript(
str, name_obj, line_offset, column_offset, source->resource_options,
source_map_url, isolate->native_context(), NULL, &script_data, options,
i::NOT_NATIVES_CODE, is_module);
has_pending_exception = result.is_null();
if (has_pending_exception && script_data != NULL) {
// This case won't happen during normal operation; we have compiled
// successfully and produced cached data, and but the second compilation
// of the same source code fails.
delete script_data;
script_data = NULL;
}
RETURN_ON_FAILED_EXECUTION(UnboundScript);
if ((options == kProduceParserCache || options == kProduceCodeCache) &&
script_data != NULL) {
// script_data now contains the data that was generated. source will
// take the ownership.
source->cached_data = new CachedData(
script_data->data(), script_data->length(), CachedData::BufferOwned);
script_data->ReleaseDataOwnership();
} else if (options == kConsumeParserCache || options == kConsumeCodeCache) {
source->cached_data->rejected = script_data->rejected();
}
delete script_data;
}
RETURN_ESCAPED(ToApiHandle<UnboundScript>(result));
}
MaybeLocal<UnboundScript> ScriptCompiler::CompileUnboundScript(
Isolate* v8_isolate, Source* source, CompileOptions options) {
return CompileUnboundInternal(v8_isolate, source, options, false);
}
Local<UnboundScript> ScriptCompiler::CompileUnbound(Isolate* v8_isolate,
Source* source,
CompileOptions options) {
RETURN_TO_LOCAL_UNCHECKED(
CompileUnboundInternal(v8_isolate, source, options, false),
UnboundScript);
}
MaybeLocal<Script> ScriptCompiler::Compile(Local<Context> context,
Source* source,
CompileOptions options) {
auto isolate = context->GetIsolate();
auto maybe = CompileUnboundInternal(isolate, source, options, false);
Local<UnboundScript> result;
if (!maybe.ToLocal(&result)) return MaybeLocal<Script>();
v8::Context::Scope scope(context);
return result->BindToCurrentContext();
}
Local<Script> ScriptCompiler::Compile(
Isolate* v8_isolate,
Source* source,
CompileOptions options) {
auto context = v8_isolate->GetCurrentContext();
RETURN_TO_LOCAL_UNCHECKED(Compile(context, source, options), Script);
}
MaybeLocal<Script> ScriptCompiler::CompileModule(Local<Context> context,
Source* source,
CompileOptions options) {
CHECK(i::FLAG_harmony_modules);
auto isolate = context->GetIsolate();
auto maybe = CompileUnboundInternal(isolate, source, options, true);
Local<UnboundScript> generic;
if (!maybe.ToLocal(&generic)) return MaybeLocal<Script>();
v8::Context::Scope scope(context);
return generic->BindToCurrentContext();
}
class IsIdentifierHelper {
public:
IsIdentifierHelper() : is_identifier_(false), first_char_(true) {}
bool Check(i::String* string) {
i::ConsString* cons_string = i::String::VisitFlat(this, string, 0);
if (cons_string == NULL) return is_identifier_;
// We don't support cons strings here.
return false;
}
void VisitOneByteString(const uint8_t* chars, int length) {
for (int i = 0; i < length; ++i) {
if (first_char_) {
first_char_ = false;
is_identifier_ = unicode_cache_.IsIdentifierStart(chars[0]);
} else {
is_identifier_ &= unicode_cache_.IsIdentifierPart(chars[i]);
}
}
}
void VisitTwoByteString(const uint16_t* chars, int length) {
for (int i = 0; i < length; ++i) {
if (first_char_) {
first_char_ = false;
is_identifier_ = unicode_cache_.IsIdentifierStart(chars[0]);
} else {
is_identifier_ &= unicode_cache_.IsIdentifierPart(chars[i]);
}
}
}
private:
bool is_identifier_;
bool first_char_;
i::UnicodeCache unicode_cache_;
DISALLOW_COPY_AND_ASSIGN(IsIdentifierHelper);
};
MaybeLocal<Function> ScriptCompiler::CompileFunctionInContext(
Local<Context> v8_context, Source* source, size_t arguments_count,
Local<String> arguments[], size_t context_extension_count,
Local<Object> context_extensions[]) {
PREPARE_FOR_EXECUTION(
v8_context, "v8::ScriptCompiler::CompileFunctionInContext()", Function);
i::Handle<i::String> source_string;
auto factory = isolate->factory();
if (arguments_count) {
source_string = factory->NewStringFromStaticChars("(function(");
for (size_t i = 0; i < arguments_count; ++i) {
IsIdentifierHelper helper;
if (!helper.Check(*Utils::OpenHandle(*arguments[i]))) {
return Local<Function>();
}
has_pending_exception =
!factory->NewConsString(source_string,
Utils::OpenHandle(*arguments[i]))
.ToHandle(&source_string);
RETURN_ON_FAILED_EXECUTION(Function);
if (i + 1 == arguments_count) continue;
has_pending_exception =
!factory->NewConsString(source_string,
factory->LookupSingleCharacterStringFromCode(
',')).ToHandle(&source_string);
RETURN_ON_FAILED_EXECUTION(Function);
}
auto brackets = factory->NewStringFromStaticChars("){");
has_pending_exception = !factory->NewConsString(source_string, brackets)
.ToHandle(&source_string);
RETURN_ON_FAILED_EXECUTION(Function);
} else {
source_string = factory->NewStringFromStaticChars("(function(){");
}
int scope_position = source_string->length();
has_pending_exception =
!factory->NewConsString(source_string,
Utils::OpenHandle(*source->source_string))
.ToHandle(&source_string);
RETURN_ON_FAILED_EXECUTION(Function);
// Include \n in case the source contains a line end comment.
auto brackets = factory->NewStringFromStaticChars("\n})");
has_pending_exception =
!factory->NewConsString(source_string, brackets).ToHandle(&source_string);
RETURN_ON_FAILED_EXECUTION(Function);
i::Handle<i::Context> context = Utils::OpenHandle(*v8_context);
i::Handle<i::SharedFunctionInfo> outer_info(context->closure()->shared(),
isolate);
for (size_t i = 0; i < context_extension_count; ++i) {
i::Handle<i::JSObject> extension =
Utils::OpenHandle(*context_extensions[i]);
i::Handle<i::JSFunction> closure(context->closure(), isolate);
context = factory->NewWithContext(closure, context, extension);
}
i::Handle<i::Object> name_obj;
int line_offset = 0;
int column_offset = 0;
if (!source->resource_name.IsEmpty()) {
name_obj = Utils::OpenHandle(*(source->resource_name));
}
if (!source->resource_line_offset.IsEmpty()) {
line_offset = static_cast<int>(source->resource_line_offset->Value());
}
if (!source->resource_column_offset.IsEmpty()) {
column_offset = static_cast<int>(source->resource_column_offset->Value());
}
i::Handle<i::JSFunction> fun;
has_pending_exception = !i::Compiler::GetFunctionFromEval(
source_string, outer_info, context, i::SLOPPY,
i::ONLY_SINGLE_FUNCTION_LITERAL, line_offset,
column_offset - scope_position, name_obj,
source->resource_options).ToHandle(&fun);
if (has_pending_exception) {
isolate->ReportPendingMessages();
}
RETURN_ON_FAILED_EXECUTION(Function);
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, fun,
Utils::OpenHandle(*v8_context->Global()), 0,
nullptr).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Function);
RETURN_ESCAPED(Utils::ToLocal(i::Handle<i::JSFunction>::cast(result)));
}
Local<Function> ScriptCompiler::CompileFunctionInContext(
Isolate* v8_isolate, Source* source, Local<Context> v8_context,
size_t arguments_count, Local<String> arguments[],
size_t context_extension_count, Local<Object> context_extensions[]) {
RETURN_TO_LOCAL_UNCHECKED(
CompileFunctionInContext(v8_context, source, arguments_count, arguments,
context_extension_count, context_extensions),
Function);
}
ScriptCompiler::ScriptStreamingTask* ScriptCompiler::StartStreamingScript(
Isolate* v8_isolate, StreamedSource* source, CompileOptions options) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
return new i::BackgroundParsingTask(source->impl(), options,
i::FLAG_stack_size, isolate);
}
MaybeLocal<Script> ScriptCompiler::Compile(Local<Context> context,
StreamedSource* v8_source,
Local<String> full_source_string,
const ScriptOrigin& origin) {
PREPARE_FOR_EXECUTION(context, "v8::ScriptCompiler::Compile()", Script);
i::StreamedSource* source = v8_source->impl();
i::Handle<i::String> str = Utils::OpenHandle(*(full_source_string));
i::Handle<i::Script> script = isolate->factory()->NewScript(str);
if (!origin.ResourceName().IsEmpty()) {
script->set_name(*Utils::OpenHandle(*(origin.ResourceName())));
}
if (!origin.ResourceLineOffset().IsEmpty()) {
script->set_line_offset(i::Smi::FromInt(
static_cast<int>(origin.ResourceLineOffset()->Value())));
}
if (!origin.ResourceColumnOffset().IsEmpty()) {
script->set_column_offset(i::Smi::FromInt(
static_cast<int>(origin.ResourceColumnOffset()->Value())));
}
script->set_origin_options(origin.Options());
if (!origin.SourceMapUrl().IsEmpty()) {
script->set_source_mapping_url(
*Utils::OpenHandle(*(origin.SourceMapUrl())));
}
source->info->set_script(script);
source->info->set_context(isolate->native_context());
// Do the parsing tasks which need to be done on the main thread. This will
// also handle parse errors.
source->parser->Internalize(isolate, script,
source->info->literal() == nullptr);
source->parser->HandleSourceURLComments(isolate, script);
i::Handle<i::SharedFunctionInfo> result;
if (source->info->literal() != nullptr) {
// Parsing has succeeded.
result = i::Compiler::CompileStreamedScript(script, source->info.get(),
str->length());
}
has_pending_exception = result.is_null();
if (has_pending_exception) isolate->ReportPendingMessages();
RETURN_ON_FAILED_EXECUTION(Script);
source->info->clear_script(); // because script goes out of scope.
Local<UnboundScript> generic = ToApiHandle<UnboundScript>(result);
if (generic.IsEmpty()) return Local<Script>();
Local<Script> bound = generic->BindToCurrentContext();
if (bound.IsEmpty()) return Local<Script>();
RETURN_ESCAPED(bound);
}
Local<Script> ScriptCompiler::Compile(Isolate* v8_isolate,
StreamedSource* v8_source,
Local<String> full_source_string,
const ScriptOrigin& origin) {
auto context = v8_isolate->GetCurrentContext();
RETURN_TO_LOCAL_UNCHECKED(
Compile(context, v8_source, full_source_string, origin), Script);
}
uint32_t ScriptCompiler::CachedDataVersionTag() {
return static_cast<uint32_t>(base::hash_combine(
internal::Version::Hash(), internal::FlagList::Hash(),
static_cast<uint32_t>(internal::CpuFeatures::SupportedFeatures())));
}
MaybeLocal<Script> Script::Compile(Local<Context> context, Local<String> source,
ScriptOrigin* origin) {
if (origin) {
ScriptCompiler::Source script_source(source, *origin);
return ScriptCompiler::Compile(context, &script_source);
}
ScriptCompiler::Source script_source(source);
return ScriptCompiler::Compile(context, &script_source);
}
Local<Script> Script::Compile(v8::Local<String> source,
v8::ScriptOrigin* origin) {
auto str = Utils::OpenHandle(*source);
auto context = ContextFromHeapObject(str);
RETURN_TO_LOCAL_UNCHECKED(Compile(context, source, origin), Script);
}
Local<Script> Script::Compile(v8::Local<String> source,
v8::Local<String> file_name) {
auto str = Utils::OpenHandle(*source);
auto context = ContextFromHeapObject(str);
ScriptOrigin origin(file_name);
return Compile(context, source, &origin).FromMaybe(Local<Script>());
}
// --- E x c e p t i o n s ---
v8::TryCatch::TryCatch()
: isolate_(i::Isolate::Current()),
next_(isolate_->try_catch_handler()),
is_verbose_(false),
can_continue_(true),
capture_message_(true),
rethrow_(false),
has_terminated_(false) {
ResetInternal();
// Special handling for simulators which have a separate JS stack.
js_stack_comparable_address_ =
reinterpret_cast<void*>(v8::internal::SimulatorStack::RegisterCTryCatch(
v8::internal::GetCurrentStackPosition()));
isolate_->RegisterTryCatchHandler(this);
}
v8::TryCatch::TryCatch(v8::Isolate* isolate)
: isolate_(reinterpret_cast<i::Isolate*>(isolate)),
next_(isolate_->try_catch_handler()),
is_verbose_(false),
can_continue_(true),
capture_message_(true),
rethrow_(false),
has_terminated_(false) {
ResetInternal();
// Special handling for simulators which have a separate JS stack.
js_stack_comparable_address_ =
reinterpret_cast<void*>(v8::internal::SimulatorStack::RegisterCTryCatch(
v8::internal::GetCurrentStackPosition()));
isolate_->RegisterTryCatchHandler(this);
}
v8::TryCatch::~TryCatch() {
if (rethrow_) {
v8::Isolate* isolate = reinterpret_cast<Isolate*>(isolate_);
v8::HandleScope scope(isolate);
v8::Local<v8::Value> exc = v8::Local<v8::Value>::New(isolate, Exception());
if (HasCaught() && capture_message_) {
// If an exception was caught and rethrow_ is indicated, the saved
// message, script, and location need to be restored to Isolate TLS
// for reuse. capture_message_ needs to be disabled so that Throw()
// does not create a new message.
isolate_->thread_local_top()->rethrowing_message_ = true;
isolate_->RestorePendingMessageFromTryCatch(this);
}
isolate_->UnregisterTryCatchHandler(this);
v8::internal::SimulatorStack::UnregisterCTryCatch();
reinterpret_cast<Isolate*>(isolate_)->ThrowException(exc);
DCHECK(!isolate_->thread_local_top()->rethrowing_message_);
} else {
if (HasCaught() && isolate_->has_scheduled_exception()) {
// If an exception was caught but is still scheduled because no API call
// promoted it, then it is canceled to prevent it from being propagated.
// Note that this will not cancel termination exceptions.
isolate_->CancelScheduledExceptionFromTryCatch(this);
}
isolate_->UnregisterTryCatchHandler(this);
v8::internal::SimulatorStack::UnregisterCTryCatch();
}
}
bool v8::TryCatch::HasCaught() const {
return !reinterpret_cast<i::Object*>(exception_)->IsTheHole();
}
bool v8::TryCatch::CanContinue() const {
return can_continue_;
}
bool v8::TryCatch::HasTerminated() const {
return has_terminated_;
}
v8::Local<v8::Value> v8::TryCatch::ReThrow() {
if (!HasCaught()) return v8::Local<v8::Value>();
rethrow_ = true;
return v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate_));
}
v8::Local<Value> v8::TryCatch::Exception() const {
if (HasCaught()) {
// Check for out of memory exception.
i::Object* exception = reinterpret_cast<i::Object*>(exception_);
return v8::Utils::ToLocal(i::Handle<i::Object>(exception, isolate_));
} else {
return v8::Local<Value>();
}
}
MaybeLocal<Value> v8::TryCatch::StackTrace(Local<Context> context) const {
if (!HasCaught()) return v8::Local<Value>();
i::Object* raw_obj = reinterpret_cast<i::Object*>(exception_);
if (!raw_obj->IsJSObject()) return v8::Local<Value>();
PREPARE_FOR_EXECUTION(context, "v8::TryCatch::StackTrace", Value);
i::Handle<i::JSObject> obj(i::JSObject::cast(raw_obj), isolate_);
i::Handle<i::String> name = isolate->factory()->stack_string();
Maybe<bool> maybe = i::JSReceiver::HasProperty(obj, name);
has_pending_exception = !maybe.IsJust();
RETURN_ON_FAILED_EXECUTION(Value);
if (!maybe.FromJust()) return v8::Local<Value>();
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(i::Object::GetProperty(obj, name), &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
v8::Local<Value> v8::TryCatch::StackTrace() const {
auto context = reinterpret_cast<v8::Isolate*>(isolate_)->GetCurrentContext();
RETURN_TO_LOCAL_UNCHECKED(StackTrace(context), Value);
}
v8::Local<v8::Message> v8::TryCatch::Message() const {
i::Object* message = reinterpret_cast<i::Object*>(message_obj_);
DCHECK(message->IsJSMessageObject() || message->IsTheHole());
if (HasCaught() && !message->IsTheHole()) {
return v8::Utils::MessageToLocal(i::Handle<i::Object>(message, isolate_));
} else {
return v8::Local<v8::Message>();
}
}
void v8::TryCatch::Reset() {
if (!rethrow_ && HasCaught() && isolate_->has_scheduled_exception()) {
// If an exception was caught but is still scheduled because no API call
// promoted it, then it is canceled to prevent it from being propagated.
// Note that this will not cancel termination exceptions.
isolate_->CancelScheduledExceptionFromTryCatch(this);
}
ResetInternal();
}
void v8::TryCatch::ResetInternal() {
i::Object* the_hole = isolate_->heap()->the_hole_value();
exception_ = the_hole;
message_obj_ = the_hole;
}
void v8::TryCatch::SetVerbose(bool value) {
is_verbose_ = value;
}
void v8::TryCatch::SetCaptureMessage(bool value) {
capture_message_ = value;
}
// --- M e s s a g e ---
Local<String> Message::Get() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
EscapableHandleScope scope(reinterpret_cast<Isolate*>(isolate));
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::String> raw_result = i::MessageHandler::GetMessage(isolate, obj);
Local<String> result = Utils::ToLocal(raw_result);
return scope.Escape(result);
}
ScriptOrigin Message::GetScriptOrigin() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
auto message = i::Handle<i::JSMessageObject>::cast(Utils::OpenHandle(this));
auto script_wraper = i::Handle<i::Object>(message->script(), isolate);
auto script_value = i::Handle<i::JSValue>::cast(script_wraper);
i::Handle<i::Script> script(i::Script::cast(script_value->value()));
return GetScriptOriginForScript(isolate, script);
}
v8::Local<Value> Message::GetScriptResourceName() const {
return GetScriptOrigin().ResourceName();
}
v8::Local<v8::StackTrace> Message::GetStackTrace() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
EscapableHandleScope scope(reinterpret_cast<Isolate*>(isolate));
auto message = i::Handle<i::JSMessageObject>::cast(Utils::OpenHandle(this));
i::Handle<i::Object> stackFramesObj(message->stack_frames(), isolate);
if (!stackFramesObj->IsJSArray()) return v8::Local<v8::StackTrace>();
auto stackTrace = i::Handle<i::JSArray>::cast(stackFramesObj);
return scope.Escape(Utils::StackTraceToLocal(stackTrace));
}
Maybe<int> Message::GetLineNumber(Local<Context> context) const {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Message::GetLineNumber()", int);
i::Handle<i::JSFunction> fun = isolate->message_get_line_number();
i::Handle<i::Object> undefined = isolate->factory()->undefined_value();
i::Handle<i::Object> args[] = {Utils::OpenHandle(this)};
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, fun, undefined, arraysize(args), args)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(int);
return Just(static_cast<int>(result->Number()));
}
int Message::GetLineNumber() const {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return GetLineNumber(context).FromMaybe(0);
}
int Message::GetStartPosition() const {
auto self = Utils::OpenHandle(this);
return self->start_position();
}
int Message::GetEndPosition() const {
auto self = Utils::OpenHandle(this);
return self->end_position();
}
Maybe<int> Message::GetStartColumn(Local<Context> context) const {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Message::GetStartColumn()",
int);
i::Handle<i::JSFunction> fun = isolate->message_get_column_number();
i::Handle<i::Object> undefined = isolate->factory()->undefined_value();
i::Handle<i::Object> args[] = {Utils::OpenHandle(this)};
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, fun, undefined, arraysize(args), args)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(int);
return Just(static_cast<int>(result->Number()));
}
int Message::GetStartColumn() const {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
const int default_value = kNoColumnInfo;
return GetStartColumn(context).FromMaybe(default_value);
}
Maybe<int> Message::GetEndColumn(Local<Context> context) const {
auto self = Utils::OpenHandle(this);
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Message::GetEndColumn()", int);
i::Handle<i::JSFunction> fun = isolate->message_get_column_number();
i::Handle<i::Object> undefined = isolate->factory()->undefined_value();
i::Handle<i::Object> args[] = {self};
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, fun, undefined, arraysize(args), args)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(int);
int start = self->start_position();
int end = self->end_position();
return Just(static_cast<int>(result->Number()) + (end - start));
}
int Message::GetEndColumn() const {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
const int default_value = kNoColumnInfo;
return GetEndColumn(context).FromMaybe(default_value);
}
bool Message::IsSharedCrossOrigin() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
auto self = Utils::OpenHandle(this);
auto script = i::Handle<i::JSValue>::cast(
i::Handle<i::Object>(self->script(), isolate));
return i::Script::cast(script->value())
->origin_options()
.IsSharedCrossOrigin();
}
bool Message::IsOpaque() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
auto self = Utils::OpenHandle(this);
auto script = i::Handle<i::JSValue>::cast(
i::Handle<i::Object>(self->script(), isolate));
return i::Script::cast(script->value())->origin_options().IsOpaque();
}
MaybeLocal<String> Message::GetSourceLine(Local<Context> context) const {
PREPARE_FOR_EXECUTION(context, "v8::Message::GetSourceLine()", String);
i::Handle<i::JSFunction> fun = isolate->message_get_source_line();
i::Handle<i::Object> undefined = isolate->factory()->undefined_value();
i::Handle<i::Object> args[] = {Utils::OpenHandle(this)};
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, fun, undefined, arraysize(args), args)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(String);
Local<String> str;
if (result->IsString()) {
str = Utils::ToLocal(i::Handle<i::String>::cast(result));
}
RETURN_ESCAPED(str);
}
Local<String> Message::GetSourceLine() const {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(GetSourceLine(context), String)
}
void Message::PrintCurrentStackTrace(Isolate* isolate, FILE* out) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8(i_isolate);
i_isolate->PrintCurrentStackTrace(out);
}
// --- S t a c k T r a c e ---
Local<StackFrame> StackTrace::GetFrame(uint32_t index) const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
EscapableHandleScope scope(reinterpret_cast<Isolate*>(isolate));
auto self = Utils::OpenHandle(this);
auto obj = i::Object::GetElement(isolate, self, index).ToHandleChecked();
auto jsobj = i::Handle<i::JSObject>::cast(obj);
return scope.Escape(Utils::StackFrameToLocal(jsobj));
}
int StackTrace::GetFrameCount() const {
return i::Smi::cast(Utils::OpenHandle(this)->length())->value();
}
Local<Array> StackTrace::AsArray() {
return Utils::ToLocal(Utils::OpenHandle(this));
}
Local<StackTrace> StackTrace::CurrentStackTrace(
Isolate* isolate,
int frame_limit,
StackTraceOptions options) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8(i_isolate);
// TODO(dcarney): remove when ScriptDebugServer is fixed.
options = static_cast<StackTraceOptions>(
static_cast<int>(options) | kExposeFramesAcrossSecurityOrigins);
i::Handle<i::JSArray> stackTrace =
i_isolate->CaptureCurrentStackTrace(frame_limit, options);
return Utils::StackTraceToLocal(stackTrace);
}
// --- S t a c k F r a m e ---
static int getIntProperty(const StackFrame* f, const char* propertyName,
int defaultValue) {
i::Isolate* isolate = Utils::OpenHandle(f)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::JSObject> self = Utils::OpenHandle(f);
i::Handle<i::Object> obj =
i::Object::GetProperty(isolate, self, propertyName).ToHandleChecked();
return obj->IsSmi() ? i::Smi::cast(*obj)->value() : defaultValue;
}
int StackFrame::GetLineNumber() const {
return getIntProperty(this, "lineNumber", Message::kNoLineNumberInfo);
}
int StackFrame::GetColumn() const {
return getIntProperty(this, "column", Message::kNoColumnInfo);
}
int StackFrame::GetScriptId() const {
return getIntProperty(this, "scriptId", Message::kNoScriptIdInfo);
}
static Local<String> getStringProperty(const StackFrame* f,
const char* propertyName) {
i::Isolate* isolate = Utils::OpenHandle(f)->GetIsolate();
ENTER_V8(isolate);
EscapableHandleScope scope(reinterpret_cast<Isolate*>(isolate));
i::Handle<i::JSObject> self = Utils::OpenHandle(f);
i::Handle<i::Object> obj =
i::Object::GetProperty(isolate, self, propertyName).ToHandleChecked();
return obj->IsString()
? scope.Escape(Local<String>::Cast(Utils::ToLocal(obj)))
: Local<String>();
}
Local<String> StackFrame::GetScriptName() const {
return getStringProperty(this, "scriptName");
}
Local<String> StackFrame::GetScriptNameOrSourceURL() const {
return getStringProperty(this, "scriptNameOrSourceURL");
}
Local<String> StackFrame::GetFunctionName() const {
return getStringProperty(this, "functionName");
}
static bool getBoolProperty(const StackFrame* f, const char* propertyName) {
i::Isolate* isolate = Utils::OpenHandle(f)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::JSObject> self = Utils::OpenHandle(f);
i::Handle<i::Object> obj =
i::Object::GetProperty(isolate, self, propertyName).ToHandleChecked();
return obj->IsTrue();
}
bool StackFrame::IsEval() const { return getBoolProperty(this, "isEval"); }
bool StackFrame::IsConstructor() const {
return getBoolProperty(this, "isConstructor");
}
// --- N a t i v e W e a k M a p ---
Local<NativeWeakMap> NativeWeakMap::New(Isolate* v8_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8(isolate);
i::Handle<i::JSWeakMap> weakmap = isolate->factory()->NewJSWeakMap();
i::JSWeakCollection::Initialize(weakmap, isolate);
return Utils::NativeWeakMapToLocal(weakmap);
}
void NativeWeakMap::Set(Local<Value> v8_key, Local<Value> v8_value) {
i::Handle<i::JSWeakMap> weak_collection = Utils::OpenHandle(this);
i::Isolate* isolate = weak_collection->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::Object> key = Utils::OpenHandle(*v8_key);
i::Handle<i::Object> value = Utils::OpenHandle(*v8_value);
if (!key->IsJSReceiver() && !key->IsSymbol()) {
DCHECK(false);
return;
}
i::Handle<i::ObjectHashTable> table(
i::ObjectHashTable::cast(weak_collection->table()));
if (!table->IsKey(*key)) {
DCHECK(false);
return;
}
int32_t hash = i::Object::GetOrCreateHash(isolate, key)->value();
i::JSWeakCollection::Set(weak_collection, key, value, hash);
}
Local<Value> NativeWeakMap::Get(Local<Value> v8_key) {
i::Handle<i::JSWeakMap> weak_collection = Utils::OpenHandle(this);
i::Isolate* isolate = weak_collection->GetIsolate();
ENTER_V8(isolate);
i::Handle<i::Object> key = Utils::OpenHandle(*v8_key);
if (!key->IsJSReceiver() && !key->IsSymbol()) {
DCHECK(false);
return v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
i::Handle<i::ObjectHashTable> table(
i::ObjectHashTable::cast(weak_collection->table()));
if (!table->IsKey(*key)) {
DCHECK(false);
return v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
i::Handle<i::Object> lookup(table->Lookup(key), isolate);
if (lookup->IsTheHole())
return v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
return Utils::ToLocal(lookup);
}
bool NativeWeakMap::Has(Local<Value> v8_key) {
i::Handle<i::JSWeakMap> weak_collection = Utils::OpenHandle(this);
i::Isolate* isolate = weak_collection->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::Object> key = Utils::OpenHandle(*v8_key);
if (!key->IsJSReceiver() && !key->IsSymbol()) {
DCHECK(false);
return false;
}
i::Handle<i::ObjectHashTable> table(
i::ObjectHashTable::cast(weak_collection->table()));
if (!table->IsKey(*key)) {
DCHECK(false);
return false;
}
i::Handle<i::Object> lookup(table->Lookup(key), isolate);
return !lookup->IsTheHole();
}
bool NativeWeakMap::Delete(Local<Value> v8_key) {
i::Handle<i::JSWeakMap> weak_collection = Utils::OpenHandle(this);
i::Isolate* isolate = weak_collection->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::Object> key = Utils::OpenHandle(*v8_key);
if (!key->IsJSReceiver() && !key->IsSymbol()) {
DCHECK(false);
return false;
}
i::Handle<i::ObjectHashTable> table(
i::ObjectHashTable::cast(weak_collection->table()));
if (!table->IsKey(*key)) {
DCHECK(false);
return false;
}
int32_t hash = i::Object::GetOrCreateHash(isolate, key)->value();
return i::JSWeakCollection::Delete(weak_collection, key, hash);
}
// --- J S O N ---
MaybeLocal<Value> JSON::Parse(Isolate* v8_isolate, Local<String> json_string) {
auto isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
PREPARE_FOR_EXECUTION_WITH_ISOLATE(isolate, "JSON::Parse", Value);
i::Handle<i::String> string = Utils::OpenHandle(*json_string);
i::Handle<i::String> source = i::String::Flatten(string);
auto maybe = source->IsSeqOneByteString()
? i::JsonParser<true>::Parse(source)
: i::JsonParser<false>::Parse(source);
Local<Value> result;
has_pending_exception = !ToLocal<Value>(maybe, &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
Local<Value> JSON::Parse(Local<String> json_string) {
auto isolate = reinterpret_cast<v8::Isolate*>(
Utils::OpenHandle(*json_string)->GetIsolate());
RETURN_TO_LOCAL_UNCHECKED(Parse(isolate, json_string), Value);
}
// --- D a t a ---
bool Value::FullIsUndefined() const {
bool result = Utils::OpenHandle(this)->IsUndefined();
DCHECK_EQ(result, QuickIsUndefined());
return result;
}
bool Value::FullIsNull() const {
bool result = Utils::OpenHandle(this)->IsNull();
DCHECK_EQ(result, QuickIsNull());
return result;
}
bool Value::IsTrue() const {
return Utils::OpenHandle(this)->IsTrue();
}
bool Value::IsFalse() const {
return Utils::OpenHandle(this)->IsFalse();
}
bool Value::IsFunction() const {
return Utils::OpenHandle(this)->IsJSFunction();
}
bool Value::IsName() const {
return Utils::OpenHandle(this)->IsName();
}
bool Value::FullIsString() const {
bool result = Utils::OpenHandle(this)->IsString();
DCHECK_EQ(result, QuickIsString());
return result;
}
bool Value::IsSymbol() const {
return Utils::OpenHandle(this)->IsSymbol();
}
bool Value::IsArray() const {
return Utils::OpenHandle(this)->IsJSArray();
}
bool Value::IsArrayBuffer() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->IsJSArrayBuffer() && !i::JSArrayBuffer::cast(*obj)->is_shared();
}
bool Value::IsArrayBufferView() const {
return Utils::OpenHandle(this)->IsJSArrayBufferView();
}
bool Value::IsTypedArray() const {
return Utils::OpenHandle(this)->IsJSTypedArray();
}
#define VALUE_IS_TYPED_ARRAY(Type, typeName, TYPE, ctype, size) \
bool Value::Is##Type##Array() const { \
i::Handle<i::Object> obj = Utils::OpenHandle(this); \
return obj->IsJSTypedArray() && \
i::JSTypedArray::cast(*obj)->type() == i::kExternal##Type##Array; \
}
TYPED_ARRAYS(VALUE_IS_TYPED_ARRAY)
#undef VALUE_IS_TYPED_ARRAY
bool Value::IsDataView() const {
return Utils::OpenHandle(this)->IsJSDataView();
}
bool Value::IsSharedArrayBuffer() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->IsJSArrayBuffer() && i::JSArrayBuffer::cast(*obj)->is_shared();
}
bool Value::IsObject() const {
return Utils::OpenHandle(this)->IsJSObject();
}
bool Value::IsNumber() const {
return Utils::OpenHandle(this)->IsNumber();
}
#define VALUE_IS_SPECIFIC_TYPE(Type, Class) \
bool Value::Is##Type() const { \
i::Handle<i::Object> obj = Utils::OpenHandle(this); \
if (!obj->IsHeapObject()) return false; \
i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate(); \
return obj->HasSpecificClassOf(isolate->heap()->Class##_string()); \
}
VALUE_IS_SPECIFIC_TYPE(ArgumentsObject, Arguments)
VALUE_IS_SPECIFIC_TYPE(BooleanObject, Boolean)
VALUE_IS_SPECIFIC_TYPE(NumberObject, Number)
VALUE_IS_SPECIFIC_TYPE(StringObject, String)
VALUE_IS_SPECIFIC_TYPE(SymbolObject, Symbol)
VALUE_IS_SPECIFIC_TYPE(Date, Date)
VALUE_IS_SPECIFIC_TYPE(Map, Map)
VALUE_IS_SPECIFIC_TYPE(Set, Set)
VALUE_IS_SPECIFIC_TYPE(WeakMap, WeakMap)
VALUE_IS_SPECIFIC_TYPE(WeakSet, WeakSet)
#undef VALUE_IS_SPECIFIC_TYPE
bool Value::IsBoolean() const {
return Utils::OpenHandle(this)->IsBoolean();
}
bool Value::IsExternal() const {
return Utils::OpenHandle(this)->IsExternal();
}
bool Value::IsInt32() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) return true;
if (obj->IsNumber()) {
return i::IsInt32Double(obj->Number());
}
return false;
}
bool Value::IsUint32() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) return i::Smi::cast(*obj)->value() >= 0;
if (obj->IsNumber()) {
double value = obj->Number();
return !i::IsMinusZero(value) &&
value >= 0 &&
value <= i::kMaxUInt32 &&
value == i::FastUI2D(i::FastD2UI(value));
}
return false;
}
bool Value::IsNativeError() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (!obj->IsJSObject()) return false;
i::Handle<i::JSObject> js_obj = i::Handle<i::JSObject>::cast(obj);
i::Isolate* isolate = js_obj->GetIsolate();
i::Handle<i::Object> constructor(js_obj->map()->GetConstructor(), isolate);
if (!constructor->IsJSFunction()) return false;
i::Handle<i::JSFunction> function =
i::Handle<i::JSFunction>::cast(constructor);
if (!function->shared()->native()) return false;
return function.is_identical_to(isolate->error_function()) ||
function.is_identical_to(isolate->eval_error_function()) ||
function.is_identical_to(isolate->range_error_function()) ||
function.is_identical_to(isolate->reference_error_function()) ||
function.is_identical_to(isolate->syntax_error_function()) ||
function.is_identical_to(isolate->type_error_function()) ||
function.is_identical_to(isolate->uri_error_function());
}
bool Value::IsRegExp() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->IsJSRegExp();
}
bool Value::IsGeneratorFunction() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (!obj->IsJSFunction()) return false;
i::Handle<i::JSFunction> func = i::Handle<i::JSFunction>::cast(obj);
return func->shared()->is_generator();
}
bool Value::IsGeneratorObject() const {
return Utils::OpenHandle(this)->IsJSGeneratorObject();
}
bool Value::IsMapIterator() const {
return Utils::OpenHandle(this)->IsJSMapIterator();
}
bool Value::IsSetIterator() const {
return Utils::OpenHandle(this)->IsJSSetIterator();
}
MaybeLocal<String> Value::ToString(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsString()) return ToApiHandle<String>(obj);
PREPARE_FOR_EXECUTION(context, "ToString", String);
Local<String> result;
has_pending_exception =
!ToLocal<String>(i::Object::ToString(isolate, obj), &result);
RETURN_ON_FAILED_EXECUTION(String);
RETURN_ESCAPED(result);
}
Local<String> Value::ToString(Isolate* isolate) const {
RETURN_TO_LOCAL_UNCHECKED(ToString(isolate->GetCurrentContext()), String);
}
MaybeLocal<String> Value::ToDetailString(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsString()) return ToApiHandle<String>(obj);
PREPARE_FOR_EXECUTION(context, "ToDetailString", String);
Local<String> result;
has_pending_exception =
!ToLocal<String>(i::Execution::ToDetailString(isolate, obj), &result);
RETURN_ON_FAILED_EXECUTION(String);
RETURN_ESCAPED(result);
}
Local<String> Value::ToDetailString(Isolate* isolate) const {
RETURN_TO_LOCAL_UNCHECKED(ToDetailString(isolate->GetCurrentContext()),
String);
}
MaybeLocal<Object> Value::ToObject(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsJSObject()) return ToApiHandle<Object>(obj);
PREPARE_FOR_EXECUTION(context, "ToObject", Object);
Local<Object> result;
has_pending_exception =
!ToLocal<Object>(i::Execution::ToObject(isolate, obj), &result);
RETURN_ON_FAILED_EXECUTION(Object);
RETURN_ESCAPED(result);
}
Local<v8::Object> Value::ToObject(Isolate* isolate) const {
RETURN_TO_LOCAL_UNCHECKED(ToObject(isolate->GetCurrentContext()), Object);
}
MaybeLocal<Boolean> Value::ToBoolean(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsBoolean()) return ToApiHandle<Boolean>(obj);
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
auto val = isolate->factory()->ToBoolean(obj->BooleanValue());
return ToApiHandle<Boolean>(val);
}
Local<Boolean> Value::ToBoolean(Isolate* v8_isolate) const {
return ToBoolean(v8_isolate->GetCurrentContext()).ToLocalChecked();
}
MaybeLocal<Number> Value::ToNumber(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) return ToApiHandle<Number>(obj);
PREPARE_FOR_EXECUTION(context, "ToNumber", Number);
Local<Number> result;
has_pending_exception =
!ToLocal<Number>(i::Object::ToNumber(isolate, obj), &result);
RETURN_ON_FAILED_EXECUTION(Number);
RETURN_ESCAPED(result);
}
Local<Number> Value::ToNumber(Isolate* isolate) const {
RETURN_TO_LOCAL_UNCHECKED(ToNumber(isolate->GetCurrentContext()), Number);
}
MaybeLocal<Integer> Value::ToInteger(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsSmi()) return ToApiHandle<Integer>(obj);
PREPARE_FOR_EXECUTION(context, "ToInteger", Integer);
Local<Integer> result;
has_pending_exception =
!ToLocal<Integer>(i::Execution::ToInteger(isolate, obj), &result);
RETURN_ON_FAILED_EXECUTION(Integer);
RETURN_ESCAPED(result);
}
Local<Integer> Value::ToInteger(Isolate* isolate) const {
RETURN_TO_LOCAL_UNCHECKED(ToInteger(isolate->GetCurrentContext()), Integer);
}
MaybeLocal<Int32> Value::ToInt32(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsSmi()) return ToApiHandle<Int32>(obj);
Local<Int32> result;
PREPARE_FOR_EXECUTION(context, "ToInt32", Int32);
has_pending_exception =
!ToLocal<Int32>(i::Execution::ToInt32(isolate, obj), &result);
RETURN_ON_FAILED_EXECUTION(Int32);
RETURN_ESCAPED(result);
}
Local<Int32> Value::ToInt32(Isolate* isolate) const {
RETURN_TO_LOCAL_UNCHECKED(ToInt32(isolate->GetCurrentContext()), Int32);
}
MaybeLocal<Uint32> Value::ToUint32(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsSmi()) return ToApiHandle<Uint32>(obj);
Local<Uint32> result;
PREPARE_FOR_EXECUTION(context, "ToUInt32", Uint32);
has_pending_exception =
!ToLocal<Uint32>(i::Execution::ToUint32(isolate, obj), &result);
RETURN_ON_FAILED_EXECUTION(Uint32);
RETURN_ESCAPED(result);
}
Local<Uint32> Value::ToUint32(Isolate* isolate) const {
RETURN_TO_LOCAL_UNCHECKED(ToUint32(isolate->GetCurrentContext()), Uint32);
}
void i::Internals::CheckInitializedImpl(v8::Isolate* external_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external_isolate);
Utils::ApiCheck(isolate != NULL &&
!isolate->IsDead(),
"v8::internal::Internals::CheckInitialized()",
"Isolate is not initialized or V8 has died");
}
void External::CheckCast(v8::Value* that) {
Utils::ApiCheck(Utils::OpenHandle(that)->IsExternal(),
"v8::External::Cast()",
"Could not convert to external");
}
void v8::Object::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSObject(),
"v8::Object::Cast()",
"Could not convert to object");
}
void v8::Function::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSFunction(),
"v8::Function::Cast()",
"Could not convert to function");
}
void v8::Boolean::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsBoolean(),
"v8::Boolean::Cast()",
"Could not convert to boolean");
}
void v8::Name::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsName(),
"v8::Name::Cast()",
"Could not convert to name");
}
void v8::String::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsString(),
"v8::String::Cast()",
"Could not convert to string");
}
void v8::Symbol::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsSymbol(),
"v8::Symbol::Cast()",
"Could not convert to symbol");
}
void v8::Number::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsNumber(),
"v8::Number::Cast()",
"Could not convert to number");
}
void v8::Integer::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsNumber(),
"v8::Integer::Cast()",
"Could not convert to number");
}
void v8::Int32::CheckCast(v8::Value* that) {
Utils::ApiCheck(that->IsInt32(), "v8::Int32::Cast()",
"Could not convert to 32-bit signed integer");
}
void v8::Uint32::CheckCast(v8::Value* that) {
Utils::ApiCheck(that->IsUint32(), "v8::Uint32::Cast()",
"Could not convert to 32-bit unsigned integer");
}
void v8::Array::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSArray(),
"v8::Array::Cast()",
"Could not convert to array");
}
void v8::Map::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSMap(), "v8::Map::Cast()",
"Could not convert to Map");
}
void v8::Set::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSSet(), "v8::Set::Cast()",
"Could not convert to Set");
}
void v8::Promise::CheckCast(Value* that) {
Utils::ApiCheck(that->IsPromise(),
"v8::Promise::Cast()",
"Could not convert to promise");
}
void v8::Promise::Resolver::CheckCast(Value* that) {
Utils::ApiCheck(that->IsPromise(),
"v8::Promise::Resolver::Cast()",
"Could not convert to promise resolver");
}
void v8::ArrayBuffer::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(
obj->IsJSArrayBuffer() && !i::JSArrayBuffer::cast(*obj)->is_shared(),
"v8::ArrayBuffer::Cast()", "Could not convert to ArrayBuffer");
}
void v8::ArrayBufferView::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSArrayBufferView(),
"v8::ArrayBufferView::Cast()",
"Could not convert to ArrayBufferView");
}
void v8::TypedArray::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSTypedArray(),
"v8::TypedArray::Cast()",
"Could not convert to TypedArray");
}
#define CHECK_TYPED_ARRAY_CAST(Type, typeName, TYPE, ctype, size) \
void v8::Type##Array::CheckCast(Value* that) { \
i::Handle<i::Object> obj = Utils::OpenHandle(that); \
Utils::ApiCheck( \
obj->IsJSTypedArray() && \
i::JSTypedArray::cast(*obj)->type() == i::kExternal##Type##Array, \
"v8::" #Type "Array::Cast()", "Could not convert to " #Type "Array"); \
}
TYPED_ARRAYS(CHECK_TYPED_ARRAY_CAST)
#undef CHECK_TYPED_ARRAY_CAST
void v8::DataView::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSDataView(),
"v8::DataView::Cast()",
"Could not convert to DataView");
}
void v8::SharedArrayBuffer::CheckCast(Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(
obj->IsJSArrayBuffer() && i::JSArrayBuffer::cast(*obj)->is_shared(),
"v8::SharedArrayBuffer::Cast()",
"Could not convert to SharedArrayBuffer");
}
void v8::Date::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
i::Isolate* isolate = NULL;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != NULL &&
obj->HasSpecificClassOf(isolate->heap()->Date_string()),
"v8::Date::Cast()",
"Could not convert to date");
}
void v8::StringObject::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
i::Isolate* isolate = NULL;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != NULL &&
obj->HasSpecificClassOf(isolate->heap()->String_string()),
"v8::StringObject::Cast()",
"Could not convert to StringObject");
}
void v8::SymbolObject::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
i::Isolate* isolate = NULL;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != NULL &&
obj->HasSpecificClassOf(isolate->heap()->Symbol_string()),
"v8::SymbolObject::Cast()",
"Could not convert to SymbolObject");
}
void v8::NumberObject::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
i::Isolate* isolate = NULL;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != NULL &&
obj->HasSpecificClassOf(isolate->heap()->Number_string()),
"v8::NumberObject::Cast()",
"Could not convert to NumberObject");
}
void v8::BooleanObject::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
i::Isolate* isolate = NULL;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != NULL &&
obj->HasSpecificClassOf(isolate->heap()->Boolean_string()),
"v8::BooleanObject::Cast()",
"Could not convert to BooleanObject");
}
void v8::RegExp::CheckCast(v8::Value* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsJSRegExp(),
"v8::RegExp::Cast()",
"Could not convert to regular expression");
}
Maybe<bool> Value::BooleanValue(Local<Context> context) const {
return Just(Utils::OpenHandle(this)->BooleanValue());
}
bool Value::BooleanValue() const {
return Utils::OpenHandle(this)->BooleanValue();
}
Maybe<double> Value::NumberValue(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) return Just(obj->Number());
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "NumberValue", double);
i::Handle<i::Object> num;
has_pending_exception = !i::Object::ToNumber(isolate, obj).ToHandle(&num);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(double);
return Just(num->Number());
}
double Value::NumberValue() const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) return obj->Number();
return NumberValue(ContextFromHeapObject(obj))
.FromMaybe(std::numeric_limits<double>::quiet_NaN());
}
Maybe<int64_t> Value::IntegerValue(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
i::Handle<i::Object> num;
if (obj->IsNumber()) {
num = obj;
} else {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "IntegerValue", int64_t);
has_pending_exception =
!i::Execution::ToInteger(isolate, obj).ToHandle(&num);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(int64_t);
}
return Just(num->IsSmi() ? static_cast<int64_t>(i::Smi::cast(*num)->value())
: static_cast<int64_t>(num->Number()));
}
int64_t Value::IntegerValue() const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) {
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
return static_cast<int64_t>(obj->Number());
}
}
return IntegerValue(ContextFromHeapObject(obj)).FromMaybe(0);
}
Maybe<int32_t> Value::Int32Value(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) return Just(NumberToInt32(*obj));
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "Int32Value", int32_t);
i::Handle<i::Object> num;
has_pending_exception = !i::Execution::ToInt32(isolate, obj).ToHandle(&num);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(int32_t);
return Just(num->IsSmi() ? i::Smi::cast(*num)->value()
: static_cast<int32_t>(num->Number()));
}
int32_t Value::Int32Value() const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) return NumberToInt32(*obj);
return Int32Value(ContextFromHeapObject(obj)).FromMaybe(0);
}
Maybe<uint32_t> Value::Uint32Value(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) return Just(NumberToUint32(*obj));
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "Uint32Value", uint32_t);
i::Handle<i::Object> num;
has_pending_exception = !i::Execution::ToUint32(isolate, obj).ToHandle(&num);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(uint32_t);
return Just(num->IsSmi() ? static_cast<uint32_t>(i::Smi::cast(*num)->value())
: static_cast<uint32_t>(num->Number()));
}
uint32_t Value::Uint32Value() const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) return NumberToUint32(*obj);
return Uint32Value(ContextFromHeapObject(obj)).FromMaybe(0);
}
MaybeLocal<Uint32> Value::ToArrayIndex(Local<Context> context) const {
auto self = Utils::OpenHandle(this);
if (self->IsSmi()) {
if (i::Smi::cast(*self)->value() >= 0) return Utils::Uint32ToLocal(self);
return Local<Uint32>();
}
PREPARE_FOR_EXECUTION(context, "ToArrayIndex", Uint32);
i::Handle<i::Object> string_obj;
has_pending_exception =
!i::Object::ToString(isolate, self).ToHandle(&string_obj);
RETURN_ON_FAILED_EXECUTION(Uint32);
i::Handle<i::String> str = i::Handle<i::String>::cast(string_obj);
uint32_t index;
if (str->AsArrayIndex(&index)) {
i::Handle<i::Object> value;
if (index <= static_cast<uint32_t>(i::Smi::kMaxValue)) {
value = i::Handle<i::Object>(i::Smi::FromInt(index), isolate);
} else {
value = isolate->factory()->NewNumber(index);
}
RETURN_ESCAPED(Utils::Uint32ToLocal(value));
}
return Local<Uint32>();
}
Local<Uint32> Value::ToArrayIndex() const {
auto self = Utils::OpenHandle(this);
if (self->IsSmi()) {
if (i::Smi::cast(*self)->value() >= 0) return Utils::Uint32ToLocal(self);
return Local<Uint32>();
}
auto context = ContextFromHeapObject(self);
RETURN_TO_LOCAL_UNCHECKED(ToArrayIndex(context), Uint32);
}
Maybe<bool> Value::Equals(Local<Context> context, Local<Value> that) const {
auto self = Utils::OpenHandle(this);
auto other = Utils::OpenHandle(*that);
if (self->IsSmi() && other->IsSmi()) {
return Just(self->Number() == other->Number());
}
if (self->IsJSObject() && other->IsJSObject()) {
return Just(*self == *other);
}
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Value::Equals()", bool);
i::Handle<i::Object> args[] = { other };
i::Handle<i::JSFunction> fun = isolate->equals_builtin();
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, fun, self, arraysize(args), args)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(*result == i::Smi::FromInt(i::EQUAL));
}
bool Value::Equals(Local<Value> that) const {
auto self = Utils::OpenHandle(this);
auto other = Utils::OpenHandle(*that);
if (self->IsSmi() && other->IsSmi()) {
return self->Number() == other->Number();
}
if (self->IsJSObject() && other->IsJSObject()) {
return *self == *other;
}
auto heap_object = self->IsSmi() ? other : self;
auto context = ContextFromHeapObject(heap_object);
return Equals(context, that).FromMaybe(false);
}
bool Value::StrictEquals(Local<Value> that) const {
auto self = Utils::OpenHandle(this);
auto other = Utils::OpenHandle(*that);
return self->StrictEquals(*other);
}
bool Value::SameValue(Local<Value> that) const {
auto self = Utils::OpenHandle(this);
auto other = Utils::OpenHandle(*that);
return self->SameValue(*other);
}
Maybe<bool> v8::Object::Set(v8::Local<v8::Context> context,
v8::Local<Value> key, v8::Local<Value> value) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::Set()", bool);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
auto value_obj = Utils::OpenHandle(*value);
has_pending_exception =
i::Runtime::SetObjectProperty(isolate, self, key_obj, value_obj,
i::SLOPPY).is_null();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
bool v8::Object::Set(v8::Local<Value> key, v8::Local<Value> value) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return Set(context, key, value).FromMaybe(false);
}
Maybe<bool> v8::Object::Set(v8::Local<v8::Context> context, uint32_t index,
v8::Local<Value> value) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::Set()", bool);
auto self = Utils::OpenHandle(this);
auto value_obj = Utils::OpenHandle(*value);
has_pending_exception = i::Object::SetElement(isolate, self, index, value_obj,
i::SLOPPY).is_null();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
bool v8::Object::Set(uint32_t index, v8::Local<Value> value) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return Set(context, index, value).FromMaybe(false);
}
Maybe<bool> v8::Object::CreateDataProperty(v8::Local<v8::Context> context,
v8::Local<Name> key,
v8::Local<Value> value) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::CreateDataProperty()",
bool);
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Name> key_obj = Utils::OpenHandle(*key);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj, i::LookupIterator::OWN);
Maybe<bool> result = i::JSObject::CreateDataProperty(&it, value_obj);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
Maybe<bool> v8::Object::CreateDataProperty(v8::Local<v8::Context> context,
uint32_t index,
v8::Local<Value> value) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::CreateDataProperty()",
bool);
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
i::LookupIterator it(isolate, self, index, i::LookupIterator::OWN);
Maybe<bool> result = i::JSObject::CreateDataProperty(&it, value_obj);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
Maybe<bool> v8::Object::DefineOwnProperty(v8::Local<v8::Context> context,
v8::Local<Name> key,
v8::Local<Value> value,
v8::PropertyAttribute attributes) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::DefineOwnProperty()",
bool);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
auto value_obj = Utils::OpenHandle(*value);
if (self->IsAccessCheckNeeded() && !isolate->MayAccess(self)) {
isolate->ReportFailedAccessCheck(self);
return Nothing<bool>();
}
i::Handle<i::FixedArray> desc = isolate->factory()->NewFixedArray(3);
desc->set(0, isolate->heap()->ToBoolean(!(attributes & v8::ReadOnly)));
desc->set(1, isolate->heap()->ToBoolean(!(attributes & v8::DontEnum)));
desc->set(2, isolate->heap()->ToBoolean(!(attributes & v8::DontDelete)));
i::Handle<i::JSArray> desc_array =
isolate->factory()->NewJSArrayWithElements(desc, i::FAST_ELEMENTS, 3);
i::Handle<i::Object> args[] = {self, key_obj, value_obj, desc_array};
i::Handle<i::Object> undefined = isolate->factory()->undefined_value();
i::Handle<i::JSFunction> fun = isolate->object_define_own_property();
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, fun, undefined, arraysize(args), args)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->BooleanValue());
}
MUST_USE_RESULT
static i::MaybeHandle<i::Object> DefineObjectProperty(
i::Handle<i::JSObject> js_object, i::Handle<i::Object> key,
i::Handle<i::Object> value, PropertyAttributes attrs) {
i::Isolate* isolate = js_object->GetIsolate();
// Check if the given key is an array index.
uint32_t index = 0;
if (key->ToArrayIndex(&index)) {
return i::JSObject::SetOwnElementIgnoreAttributes(js_object, index, value,
attrs);
}
i::Handle<i::Name> name;
ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate, name,
i::Object::ToName(isolate, key),
i::MaybeHandle<i::Object>());
return i::JSObject::DefinePropertyOrElementIgnoreAttributes(js_object, name,
value, attrs);
}
Maybe<bool> v8::Object::ForceSet(v8::Local<v8::Context> context,
v8::Local<Value> key, v8::Local<Value> value,
v8::PropertyAttribute attribs) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::Set()", bool);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
auto value_obj = Utils::OpenHandle(*value);
has_pending_exception =
DefineObjectProperty(self, key_obj, value_obj,
static_cast<PropertyAttributes>(attribs)).is_null();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
bool v8::Object::ForceSet(v8::Local<Value> key, v8::Local<Value> value,
v8::PropertyAttribute attribs) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
PREPARE_FOR_EXECUTION_GENERIC(isolate, Local<Context>(),
"v8::Object::ForceSet", false, i::HandleScope,
false);
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
has_pending_exception =
DefineObjectProperty(self, key_obj, value_obj,
static_cast<PropertyAttributes>(attribs)).is_null();
EXCEPTION_BAILOUT_CHECK_SCOPED(isolate, false);
return true;
}
MaybeLocal<Value> v8::Object::Get(Local<v8::Context> context,
Local<Value> key) {
PREPARE_FOR_EXECUTION(context, "v8::Object::Get()", Value);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
i::Handle<i::Object> result;
has_pending_exception =
!i::Runtime::GetObjectProperty(isolate, self, key_obj).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(Utils::ToLocal(result));
}
Local<Value> v8::Object::Get(v8::Local<Value> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(Get(context, key), Value);
}
MaybeLocal<Value> v8::Object::Get(Local<Context> context, uint32_t index) {
PREPARE_FOR_EXECUTION(context, "v8::Object::Get()", Value);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> result;
has_pending_exception =
!i::Object::GetElement(isolate, self, index).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(Utils::ToLocal(result));
}
Local<Value> v8::Object::Get(uint32_t index) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(Get(context, index), Value);
}
Maybe<PropertyAttribute> v8::Object::GetPropertyAttributes(
Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(
context, "v8::Object::GetPropertyAttributes()", PropertyAttribute);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
if (!key_obj->IsName()) {
has_pending_exception =
!i::Object::ToString(isolate, key_obj).ToHandle(&key_obj);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(PropertyAttribute);
}
auto key_name = i::Handle<i::Name>::cast(key_obj);
auto result = i::JSReceiver::GetPropertyAttributes(self, key_name);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(PropertyAttribute);
if (result.FromJust() == ABSENT) {
return Just(static_cast<PropertyAttribute>(NONE));
}
return Just(static_cast<PropertyAttribute>(result.FromJust()));
}
PropertyAttribute v8::Object::GetPropertyAttributes(v8::Local<Value> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return GetPropertyAttributes(context, key)
.FromMaybe(static_cast<PropertyAttribute>(NONE));
}
MaybeLocal<Value> v8::Object::GetOwnPropertyDescriptor(Local<Context> context,
Local<String> key) {
PREPARE_FOR_EXECUTION(context, "v8::Object::GetOwnPropertyDescriptor()",
Value);
auto obj = Utils::OpenHandle(this);
auto key_name = Utils::OpenHandle(*key);
i::Handle<i::Object> args[] = { obj, key_name };
i::Handle<i::JSFunction> fun = isolate->object_get_own_property_descriptor();
i::Handle<i::Object> undefined = isolate->factory()->undefined_value();
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, fun, undefined, arraysize(args), args)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(Utils::ToLocal(result));
}
Local<Value> v8::Object::GetOwnPropertyDescriptor(Local<String> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(GetOwnPropertyDescriptor(context, key), Value);
}
Local<Value> v8::Object::GetPrototype() {
auto isolate = Utils::OpenHandle(this)->GetIsolate();
auto self = Utils::OpenHandle(this);
i::PrototypeIterator iter(isolate, self);
return Utils::ToLocal(i::PrototypeIterator::GetCurrent(iter));
}
Maybe<bool> v8::Object::SetPrototype(Local<Context> context,
Local<Value> value) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::SetPrototype()", bool);
auto self = Utils::OpenHandle(this);
auto value_obj = Utils::OpenHandle(*value);
// We do not allow exceptions thrown while setting the prototype
// to propagate outside.
TryCatch try_catch(reinterpret_cast<v8::Isolate*>(isolate));
auto result = i::JSObject::SetPrototype(self, value_obj, false);
has_pending_exception = result.is_null();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
bool v8::Object::SetPrototype(Local<Value> value) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return SetPrototype(context, value).FromMaybe(false);
}
Local<Object> v8::Object::FindInstanceInPrototypeChain(
v8::Local<FunctionTemplate> tmpl) {
auto isolate = Utils::OpenHandle(this)->GetIsolate();
i::PrototypeIterator iter(isolate, *Utils::OpenHandle(this),
i::PrototypeIterator::START_AT_RECEIVER);
auto tmpl_info = *Utils::OpenHandle(*tmpl);
while (!tmpl_info->IsTemplateFor(iter.GetCurrent())) {
iter.Advance();
if (iter.IsAtEnd()) {
return Local<Object>();
}
}
return Utils::ToLocal(
i::handle(i::JSObject::cast(iter.GetCurrent()), isolate));
}
MaybeLocal<Array> v8::Object::GetPropertyNames(Local<Context> context) {
PREPARE_FOR_EXECUTION(context, "v8::Object::GetPropertyNames()", Array);
auto self = Utils::OpenHandle(this);
i::Handle<i::FixedArray> value;
has_pending_exception = !i::JSReceiver::GetKeys(
self, i::JSReceiver::INCLUDE_PROTOS).ToHandle(&value);
RETURN_ON_FAILED_EXECUTION(Array);
// Because we use caching to speed up enumeration it is important
// to never change the result of the basic enumeration function so
// we clone the result.
auto elms = isolate->factory()->CopyFixedArray(value);
auto result = isolate->factory()->NewJSArrayWithElements(elms);
RETURN_ESCAPED(Utils::ToLocal(result));
}
Local<Array> v8::Object::GetPropertyNames() {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(GetPropertyNames(context), Array);
}
MaybeLocal<Array> v8::Object::GetOwnPropertyNames(Local<Context> context) {
PREPARE_FOR_EXECUTION(context, "v8::Object::GetOwnPropertyNames()", Array);
auto self = Utils::OpenHandle(this);
i::Handle<i::FixedArray> value;
has_pending_exception = !i::JSReceiver::GetKeys(
self, i::JSReceiver::OWN_ONLY).ToHandle(&value);
RETURN_ON_FAILED_EXECUTION(Array);
// Because we use caching to speed up enumeration it is important
// to never change the result of the basic enumeration function so
// we clone the result.
auto elms = isolate->factory()->CopyFixedArray(value);
auto result = isolate->factory()->NewJSArrayWithElements(elms);
RETURN_ESCAPED(Utils::ToLocal(result));
}
Local<Array> v8::Object::GetOwnPropertyNames() {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(GetOwnPropertyNames(context), Array);
}
MaybeLocal<String> v8::Object::ObjectProtoToString(Local<Context> context) {
auto self = Utils::OpenHandle(this);
auto isolate = self->GetIsolate();
auto v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
i::Handle<i::Object> name(self->class_name(), isolate);
i::Handle<i::Object> tag;
// Native implementation of Object.prototype.toString (v8natives.js):
// var c = %_ClassOf(this);
// if (c === 'Arguments') c = 'Object';
// return "[object " + c + "]";
if (!name->IsString()) {
return v8::String::NewFromUtf8(v8_isolate, "[object ]",
NewStringType::kNormal);
}
auto class_name = i::Handle<i::String>::cast(name);
if (i::String::Equals(class_name, isolate->factory()->Arguments_string())) {
return v8::String::NewFromUtf8(v8_isolate, "[object Object]",
NewStringType::kNormal);
}
if (internal::FLAG_harmony_tostring) {
PREPARE_FOR_EXECUTION(context, "v8::Object::ObjectProtoToString()", String);
auto toStringTag = isolate->factory()->to_string_tag_symbol();
has_pending_exception = !i::Runtime::GetObjectProperty(
isolate, self, toStringTag).ToHandle(&tag);
RETURN_ON_FAILED_EXECUTION(String);
if (tag->IsString()) {
class_name = Utils::OpenHandle(*handle_scope.Escape(
Utils::ToLocal(i::Handle<i::String>::cast(tag))));
}
}
const char* prefix = "[object ";
Local<String> str = Utils::ToLocal(class_name);
const char* postfix = "]";
int prefix_len = i::StrLength(prefix);
int str_len = str->Utf8Length();
int postfix_len = i::StrLength(postfix);
int buf_len = prefix_len + str_len + postfix_len;
i::ScopedVector<char> buf(buf_len);
// Write prefix.
char* ptr = buf.start();
i::MemCopy(ptr, prefix, prefix_len * v8::internal::kCharSize);
ptr += prefix_len;
// Write real content.
str->WriteUtf8(ptr, str_len);
ptr += str_len;
// Write postfix.
i::MemCopy(ptr, postfix, postfix_len * v8::internal::kCharSize);
// Copy the buffer into a heap-allocated string and return it.
return v8::String::NewFromUtf8(v8_isolate, buf.start(),
NewStringType::kNormal, buf_len);
}
Local<String> v8::Object::ObjectProtoToString() {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(ObjectProtoToString(context), String);
}
Local<String> v8::Object::GetConstructorName() {
auto self = Utils::OpenHandle(this);
i::Handle<i::String> name(self->constructor_name());
return Utils::ToLocal(name);
}
Maybe<bool> v8::Object::Delete(Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::Delete()", bool);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
i::Handle<i::Object> obj;
has_pending_exception =
!i::Runtime::DeleteObjectProperty(isolate, self, key_obj, i::SLOPPY)
.ToHandle(&obj);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(obj->IsTrue());
}
bool v8::Object::Delete(v8::Local<Value> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return Delete(context, key).FromMaybe(false);
}
Maybe<bool> v8::Object::Has(Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::Get()", bool);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
Maybe<bool> maybe = Nothing<bool>();
// Check if the given key is an array index.
uint32_t index = 0;
if (key_obj->ToArrayIndex(&index)) {
maybe = i::JSReceiver::HasElement(self, index);
} else {
// Convert the key to a name - possibly by calling back into JavaScript.
i::Handle<i::Name> name;
if (i::Object::ToName(isolate, key_obj).ToHandle(&name)) {
maybe = i::JSReceiver::HasProperty(self, name);
}
}
has_pending_exception = maybe.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return maybe;
}
bool v8::Object::Has(v8::Local<Value> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return Has(context, key).FromMaybe(false);
}
Maybe<bool> v8::Object::Delete(Local<Context> context, uint32_t index) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::DeleteProperty()",
bool);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> obj;
has_pending_exception =
!i::JSReceiver::DeleteElement(self, index).ToHandle(&obj);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(obj->IsTrue());
}
bool v8::Object::Delete(uint32_t index) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return Delete(context, index).FromMaybe(false);
}
Maybe<bool> v8::Object::Has(Local<Context> context, uint32_t index) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::Get()", bool);
auto self = Utils::OpenHandle(this);
auto maybe = i::JSReceiver::HasElement(self, index);
has_pending_exception = maybe.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return maybe;
}
bool v8::Object::Has(uint32_t index) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return Has(context, index).FromMaybe(false);
}
template <typename Getter, typename Setter, typename Data>
static Maybe<bool> ObjectSetAccessor(Local<Context> context, Object* obj,
Local<Name> name, Getter getter,
Setter setter, Data data,
AccessControl settings,
PropertyAttribute attributes) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::SetAccessor()", bool);
v8::Local<AccessorSignature> signature;
auto info = MakeAccessorInfo(name, getter, setter, data, settings, attributes,
signature);
if (info.is_null()) return Nothing<bool>();
bool fast = Utils::OpenHandle(obj)->HasFastProperties();
i::Handle<i::Object> result;
has_pending_exception =
!i::JSObject::SetAccessor(Utils::OpenHandle(obj), info).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
if (result->IsUndefined()) return Nothing<bool>();
if (fast) {
i::JSObject::MigrateSlowToFast(Utils::OpenHandle(obj), 0, "APISetAccessor");
}
return Just(true);
}
Maybe<bool> Object::SetAccessor(Local<Context> context, Local<Name> name,
AccessorNameGetterCallback getter,
AccessorNameSetterCallback setter,
MaybeLocal<Value> data, AccessControl settings,
PropertyAttribute attribute) {
return ObjectSetAccessor(context, this, name, getter, setter,
data.FromMaybe(Local<Value>()), settings, attribute);
}
bool Object::SetAccessor(Local<String> name, AccessorGetterCallback getter,
AccessorSetterCallback setter, v8::Local<Value> data,
AccessControl settings, PropertyAttribute attributes) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return ObjectSetAccessor(context, this, name, getter, setter, data, settings,
attributes).FromMaybe(false);
}
bool Object::SetAccessor(Local<Name> name, AccessorNameGetterCallback getter,
AccessorNameSetterCallback setter,
v8::Local<Value> data, AccessControl settings,
PropertyAttribute attributes) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return ObjectSetAccessor(context, this, name, getter, setter, data, settings,
attributes).FromMaybe(false);
}
void Object::SetAccessorProperty(Local<Name> name, Local<Function> getter,
Local<Function> setter,
PropertyAttribute attribute,
AccessControl settings) {
// TODO(verwaest): Remove |settings|.
DCHECK_EQ(v8::DEFAULT, settings);
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::Object> getter_i = v8::Utils::OpenHandle(*getter);
i::Handle<i::Object> setter_i = v8::Utils::OpenHandle(*setter, true);
if (setter_i.is_null()) setter_i = isolate->factory()->null_value();
i::JSObject::DefineAccessor(v8::Utils::OpenHandle(this),
v8::Utils::OpenHandle(*name),
getter_i,
setter_i,
static_cast<PropertyAttributes>(attribute));
}
Maybe<bool> v8::Object::HasOwnProperty(Local<Context> context,
Local<Name> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::HasOwnProperty()",
bool);
auto self = Utils::OpenHandle(this);
auto key_val = Utils::OpenHandle(*key);
auto result = i::JSReceiver::HasOwnProperty(self, key_val);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
bool v8::Object::HasOwnProperty(Local<String> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return HasOwnProperty(context, key).FromMaybe(false);
}
Maybe<bool> v8::Object::HasRealNamedProperty(Local<Context> context,
Local<Name> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::HasRealNamedProperty()",
bool);
auto self = Utils::OpenHandle(this);
auto key_val = Utils::OpenHandle(*key);
auto result = i::JSObject::HasRealNamedProperty(self, key_val);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
bool v8::Object::HasRealNamedProperty(Local<String> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return HasRealNamedProperty(context, key).FromMaybe(false);
}
Maybe<bool> v8::Object::HasRealIndexedProperty(Local<Context> context,
uint32_t index) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context,
"v8::Object::HasRealIndexedProperty()", bool);
auto self = Utils::OpenHandle(this);
auto result = i::JSObject::HasRealElementProperty(self, index);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
bool v8::Object::HasRealIndexedProperty(uint32_t index) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return HasRealIndexedProperty(context, index).FromMaybe(false);
}
Maybe<bool> v8::Object::HasRealNamedCallbackProperty(Local<Context> context,
Local<Name> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(
context, "v8::Object::HasRealNamedCallbackProperty()", bool);
auto self = Utils::OpenHandle(this);
auto key_val = Utils::OpenHandle(*key);
auto result = i::JSObject::HasRealNamedCallbackProperty(self, key_val);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
bool v8::Object::HasRealNamedCallbackProperty(Local<String> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return HasRealNamedCallbackProperty(context, key).FromMaybe(false);
}
bool v8::Object::HasNamedLookupInterceptor() {
auto self = Utils::OpenHandle(this);
return self->HasNamedInterceptor();
}
bool v8::Object::HasIndexedLookupInterceptor() {
auto self = Utils::OpenHandle(this);
return self->HasIndexedInterceptor();
}
MaybeLocal<Value> v8::Object::GetRealNamedPropertyInPrototypeChain(
Local<Context> context, Local<Name> key) {
PREPARE_FOR_EXECUTION(
context, "v8::Object::GetRealNamedPropertyInPrototypeChain()", Value);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
i::PrototypeIterator iter(isolate, self);
if (iter.IsAtEnd()) return MaybeLocal<Value>();
auto proto = i::PrototypeIterator::GetCurrent(iter);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj, i::Handle<i::JSReceiver>::cast(proto),
i::LookupIterator::PROTOTYPE_CHAIN_SKIP_INTERCEPTOR);
Local<Value> result;
has_pending_exception = !ToLocal<Value>(i::Object::GetProperty(&it), &result);
RETURN_ON_FAILED_EXECUTION(Value);
if (!it.IsFound()) return MaybeLocal<Value>();
RETURN_ESCAPED(result);
}
Local<Value> v8::Object::GetRealNamedPropertyInPrototypeChain(
Local<String> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(GetRealNamedPropertyInPrototypeChain(context, key),
Value);
}
Maybe<PropertyAttribute>
v8::Object::GetRealNamedPropertyAttributesInPrototypeChain(
Local<Context> context, Local<Name> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(
context, "v8::Object::GetRealNamedPropertyAttributesInPrototypeChain()",
PropertyAttribute);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
i::PrototypeIterator iter(isolate, self);
if (iter.IsAtEnd()) return Nothing<PropertyAttribute>();
auto proto = i::PrototypeIterator::GetCurrent(iter);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj, i::Handle<i::JSReceiver>::cast(proto),
i::LookupIterator::PROTOTYPE_CHAIN_SKIP_INTERCEPTOR);
auto result = i::JSReceiver::GetPropertyAttributes(&it);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(PropertyAttribute);
if (!it.IsFound()) return Nothing<PropertyAttribute>();
if (result.FromJust() == ABSENT) {
return Just(static_cast<PropertyAttribute>(NONE));
}
return Just<PropertyAttribute>(
static_cast<PropertyAttribute>(result.FromJust()));
}
Maybe<PropertyAttribute>
v8::Object::GetRealNamedPropertyAttributesInPrototypeChain(Local<String> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return GetRealNamedPropertyAttributesInPrototypeChain(context, key);
}
MaybeLocal<Value> v8::Object::GetRealNamedProperty(Local<Context> context,
Local<Name> key) {
PREPARE_FOR_EXECUTION(context, "v8::Object::GetRealNamedProperty()", Value);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj,
i::LookupIterator::PROTOTYPE_CHAIN_SKIP_INTERCEPTOR);
Local<Value> result;
has_pending_exception = !ToLocal<Value>(i::Object::GetProperty(&it), &result);
RETURN_ON_FAILED_EXECUTION(Value);
if (!it.IsFound()) return MaybeLocal<Value>();
RETURN_ESCAPED(result);
}
Local<Value> v8::Object::GetRealNamedProperty(Local<String> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(GetRealNamedProperty(context, key), Value);
}
Maybe<PropertyAttribute> v8::Object::GetRealNamedPropertyAttributes(
Local<Context> context, Local<Name> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(
context, "v8::Object::GetRealNamedPropertyAttributes()",
PropertyAttribute);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj,
i::LookupIterator::PROTOTYPE_CHAIN_SKIP_INTERCEPTOR);
auto result = i::JSReceiver::GetPropertyAttributes(&it);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(PropertyAttribute);
if (!it.IsFound()) return Nothing<PropertyAttribute>();
if (result.FromJust() == ABSENT) {
return Just(static_cast<PropertyAttribute>(NONE));
}
return Just<PropertyAttribute>(
static_cast<PropertyAttribute>(result.FromJust()));
}
Maybe<PropertyAttribute> v8::Object::GetRealNamedPropertyAttributes(
Local<String> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return GetRealNamedPropertyAttributes(context, key);
}
Local<v8::Object> v8::Object::Clone() {
auto self = Utils::OpenHandle(this);
auto isolate = self->GetIsolate();
ENTER_V8(isolate);
auto result = isolate->factory()->CopyJSObject(self);
CHECK(!result.is_null());
return Utils::ToLocal(result);
}
Local<v8::Context> v8::Object::CreationContext() {
auto self = Utils::OpenHandle(this);
auto context = handle(self->GetCreationContext());
return Utils::ToLocal(context);
}
int v8::Object::GetIdentityHash() {
auto isolate = Utils::OpenHandle(this)->GetIsolate();
i::HandleScope scope(isolate);
auto self = Utils::OpenHandle(this);
return i::JSReceiver::GetOrCreateIdentityHash(self)->value();
}
bool v8::Object::SetHiddenValue(v8::Local<v8::String> key,
v8::Local<v8::Value> value) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
if (value.IsEmpty()) return DeleteHiddenValue(key);
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
i::Handle<i::String> key_string =
isolate->factory()->InternalizeString(key_obj);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
i::Handle<i::Object> result =
i::JSObject::SetHiddenProperty(self, key_string, value_obj);
return *result == *self;
}
v8::Local<v8::Value> v8::Object::GetHiddenValue(v8::Local<v8::String> key) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
i::Handle<i::String> key_string =
isolate->factory()->InternalizeString(key_obj);
i::Handle<i::Object> result(self->GetHiddenProperty(key_string), isolate);
if (result->IsTheHole()) return v8::Local<v8::Value>();
return Utils::ToLocal(result);
}
bool v8::Object::DeleteHiddenValue(v8::Local<v8::String> key) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::JSObject> self = Utils::OpenHandle(this);
i::Handle<i::String> key_obj = Utils::OpenHandle(*key);
i::Handle<i::String> key_string =
isolate->factory()->InternalizeString(key_obj);
i::JSObject::DeleteHiddenProperty(self, key_string);
return true;
}
bool v8::Object::IsCallable() {
auto self = Utils::OpenHandle(this);
return self->IsCallable();
}
MaybeLocal<Value> Object::CallAsFunction(Local<Context> context,
Local<Value> recv, int argc,
Local<Value> argv[]) {
PREPARE_FOR_EXECUTION_WITH_CALLBACK(context, "v8::Object::CallAsFunction()",
Value);
i::TimerEventScope<i::TimerEventExecute> timer_scope(isolate);
auto self = Utils::OpenHandle(this);
auto recv_obj = Utils::OpenHandle(*recv);
STATIC_ASSERT(sizeof(v8::Local<v8::Value>) == sizeof(i::Object**));
i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
i::Handle<i::JSFunction> fun;
if (self->IsJSFunction()) {
fun = i::Handle<i::JSFunction>::cast(self);
} else {
i::Handle<i::Object> delegate;
has_pending_exception = !i::Execution::TryGetFunctionDelegate(isolate, self)
.ToHandle(&delegate);
RETURN_ON_FAILED_EXECUTION(Value);
fun = i::Handle<i::JSFunction>::cast(delegate);
recv_obj = self;
}
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(
i::Execution::Call(isolate, fun, recv_obj, argc, args, true),
&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
Local<v8::Value> Object::CallAsFunction(v8::Local<v8::Value> recv, int argc,
v8::Local<v8::Value> argv[]) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
Local<Value>* argv_cast = reinterpret_cast<Local<Value>*>(argv);
RETURN_TO_LOCAL_UNCHECKED(CallAsFunction(context, recv, argc, argv_cast),
Value);
}
MaybeLocal<Value> Object::CallAsConstructor(Local<Context> context, int argc,
Local<Value> argv[]) {
PREPARE_FOR_EXECUTION_WITH_CALLBACK(context,
"v8::Object::CallAsConstructor()", Value);
i::TimerEventScope<i::TimerEventExecute> timer_scope(isolate);
auto self = Utils::OpenHandle(this);
STATIC_ASSERT(sizeof(v8::Local<v8::Value>) == sizeof(i::Object**));
i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
if (self->IsJSFunction()) {
auto fun = i::Handle<i::JSFunction>::cast(self);
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(i::Execution::New(fun, argc, args), &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
i::Handle<i::Object> delegate;
has_pending_exception = !i::Execution::TryGetConstructorDelegate(
isolate, self).ToHandle(&delegate);
RETURN_ON_FAILED_EXECUTION(Value);
if (!delegate->IsUndefined()) {
auto fun = i::Handle<i::JSFunction>::cast(delegate);
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(i::Execution::Call(isolate, fun, self, argc, args),
&result);
RETURN_ON_FAILED_EXECUTION(Value);
DCHECK(!delegate->IsUndefined());
RETURN_ESCAPED(result);
}
return MaybeLocal<Value>();
}
Local<v8::Value> Object::CallAsConstructor(int argc,
v8::Local<v8::Value> argv[]) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
Local<Value>* argv_cast = reinterpret_cast<Local<Value>*>(argv);
RETURN_TO_LOCAL_UNCHECKED(CallAsConstructor(context, argc, argv_cast), Value);
}
MaybeLocal<Function> Function::New(Local<Context> context,
FunctionCallback callback, Local<Value> data,
int length) {
i::Isolate* isolate = Utils::OpenHandle(*context)->GetIsolate();
LOG_API(isolate, "Function::New");
ENTER_V8(isolate);
return FunctionTemplateNew(isolate, callback, data, Local<Signature>(),
length, true)->GetFunction(context);
}
Local<Function> Function::New(Isolate* v8_isolate, FunctionCallback callback,
Local<Value> data, int length) {
return Function::New(v8_isolate->GetCurrentContext(), callback, data, length)
.FromMaybe(Local<Function>());
}
Local<v8::Object> Function::NewInstance() const {
return NewInstance(Isolate::GetCurrent()->GetCurrentContext(), 0, NULL)
.FromMaybe(Local<Object>());
}
MaybeLocal<Object> Function::NewInstance(Local<Context> context, int argc,
v8::Local<v8::Value> argv[]) const {
PREPARE_FOR_EXECUTION_WITH_CALLBACK(context, "v8::Function::NewInstance()",
Object);
i::TimerEventScope<i::TimerEventExecute> timer_scope(isolate);
auto self = Utils::OpenHandle(this);
STATIC_ASSERT(sizeof(v8::Local<v8::Value>) == sizeof(i::Object**));
i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
Local<Object> result;
has_pending_exception =
!ToLocal<Object>(i::Execution::New(self, argc, args), &result);
RETURN_ON_FAILED_EXECUTION(Object);
RETURN_ESCAPED(result);
}
Local<v8::Object> Function::NewInstance(int argc,
v8::Local<v8::Value> argv[]) const {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(NewInstance(context, argc, argv), Object);
}
MaybeLocal<v8::Value> Function::Call(Local<Context> context,
v8::Local<v8::Value> recv, int argc,
v8::Local<v8::Value> argv[]) {
PREPARE_FOR_EXECUTION_WITH_CALLBACK(context, "v8::Function::Call()", Value);
i::TimerEventScope<i::TimerEventExecute> timer_scope(isolate);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> recv_obj = Utils::OpenHandle(*recv);
STATIC_ASSERT(sizeof(v8::Local<v8::Value>) == sizeof(i::Object**));
i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(
i::Execution::Call(isolate, self, recv_obj, argc, args, true),
&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
Local<v8::Value> Function::Call(v8::Local<v8::Value> recv, int argc,
v8::Local<v8::Value> argv[]) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(Call(context, recv, argc, argv), Value);
}
void Function::SetName(v8::Local<v8::String> name) {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
func->shared()->set_name(*Utils::OpenHandle(*name));
}
Local<Value> Function::GetName() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
return Utils::ToLocal(i::Handle<i::Object>(func->shared()->name(),
func->GetIsolate()));
}
Local<Value> Function::GetInferredName() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
return Utils::ToLocal(i::Handle<i::Object>(func->shared()->inferred_name(),
func->GetIsolate()));
}
Local<Value> Function::GetDisplayName() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8(isolate);
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
i::Handle<i::String> property_name =
isolate->factory()->NewStringFromStaticChars("displayName");
i::Handle<i::Object> value =
i::JSReceiver::GetDataProperty(func, property_name);
if (value->IsString()) {
i::Handle<i::String> name = i::Handle<i::String>::cast(value);
if (name->length() > 0) return Utils::ToLocal(name);
}
return ToApiHandle<Primitive>(isolate->factory()->undefined_value());
}
ScriptOrigin Function::GetScriptOrigin() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
if (func->shared()->script()->IsScript()) {
i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
return GetScriptOriginForScript(func->GetIsolate(), script);
}
return v8::ScriptOrigin(Local<Value>());
}
const int Function::kLineOffsetNotFound = -1;
int Function::GetScriptLineNumber() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
if (func->shared()->script()->IsScript()) {
i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
return i::Script::GetLineNumber(script, func->shared()->start_position());
}
return kLineOffsetNotFound;
}
int Function::GetScriptColumnNumber() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
if (func->shared()->script()->IsScript()) {
i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
return i::Script::GetColumnNumber(script, func->shared()->start_position());
}
return kLineOffsetNotFound;
}
bool Function::IsBuiltin() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
return func->IsBuiltin();
}
int Function::ScriptId() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
if (!func->shared()->script()->IsScript()) {
return v8::UnboundScript::kNoScriptId;
}
i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
return script->id()->value();
}
Local<v8::Value> Function::GetBoundFunction() const {
i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
if (!func->shared()->bound()) {
return v8::Undefined(reinterpret_cast<v8::Isolate*>(func->GetIsolate()));
}
i::Handle<i::FixedArray> bound_args = i::Handle<i::FixedArray>(
i::FixedArray::cast(func->function_bindings()));
i::Handle<i::Object> original(
bound_args->get(i::JSFunction::kBoundFunctionIndex),
func->GetIsolate());
return Utils::ToLocal(i::Handle<i::JSFunction>::cast(original));
}
int Name::GetIdentityHash() {
auto self = Utils::OpenHandle(this);
return static_cast<int>(self->Hash());
}
int String::Length() const {
i::Handle<i::String> str = Utils::OpenHandle(this);
return str->length();
}
bool String::IsOneByte() const {
i::Handle<i::String> str = Utils::OpenHandle(this);
return str->HasOnlyOneByteChars();
}
// Helpers for ContainsOnlyOneByteHelper
template<size_t size> struct OneByteMask;
template<> struct OneByteMask<4> {
static const uint32_t value = 0xFF00FF00;
};
template<> struct OneByteMask<8> {
static const uint64_t value = V8_2PART_UINT64_C(0xFF00FF00, FF00FF00);
};
static const uintptr_t kOneByteMask = OneByteMask<sizeof(uintptr_t)>::value;
static const uintptr_t kAlignmentMask = sizeof(uintptr_t) - 1;
static inline bool Unaligned(const uint16_t* chars) {
return reinterpret_cast<const uintptr_t>(chars) & kAlignmentMask;
}
static inline const uint16_t* Align(const uint16_t* chars) {
return reinterpret_cast<uint16_t*>(
reinterpret_cast<uintptr_t>(chars) & ~kAlignmentMask);
}
class ContainsOnlyOneByteHelper {
public:
ContainsOnlyOneByteHelper() : is_one_byte_(true) {}
bool Check(i::String* string) {
i::ConsString* cons_string = i::String::VisitFlat(this, string, 0);
if (cons_string == NULL) return is_one_byte_;
return CheckCons(cons_string);
}
void VisitOneByteString(const uint8_t* chars, int length) {
// Nothing to do.
}
void VisitTwoByteString(const uint16_t* chars, int length) {
// Accumulated bits.
uintptr_t acc = 0;
// Align to uintptr_t.
const uint16_t* end = chars + length;
while (Unaligned(chars) && chars != end) {
acc |= *chars++;
}
// Read word aligned in blocks,
// checking the return value at the end of each block.
const uint16_t* aligned_end = Align(end);
const int increment = sizeof(uintptr_t)/sizeof(uint16_t);
const int inner_loops = 16;
while (chars + inner_loops*increment < aligned_end) {
for (int i = 0; i < inner_loops; i++) {
acc |= *reinterpret_cast<const uintptr_t*>(chars);
chars += increment;
}
// Check for early return.
if ((acc & kOneByteMask) != 0) {
is_one_byte_ = false;
return;
}
}
// Read the rest.
while (chars != end) {
acc |= *chars++;
}
// Check result.
if ((acc & kOneByteMask) != 0) is_one_byte_ = false;
}
private:
bool CheckCons(i::ConsString* cons_string) {
while (true) {
// Check left side if flat.
i::String* left = cons_string->first();
i::ConsString* left_as_cons =
i::String::VisitFlat(this, left, 0);
if (!is_one_byte_) return false;
// Check right side if flat.
i::String* right = cons_string->second();
i::ConsString* right_as_cons =
i::String::VisitFlat(this, right, 0);
if (!is_one_byte_) return false;
// Standard recurse/iterate trick.
if (left_as_cons != NULL && right_as_cons != NULL) {
if (left->length() < right->length()) {
CheckCons(left_as_cons);
cons_string = right_as_cons;
} else {
CheckCons(right_as_cons);
cons_string = left_as_cons;
}
// Check fast return.
if (!is_one_byte_) return false;
continue;
}
// Descend left in place.
if (left_as_cons != NULL) {
cons_string = left_as_cons;
continue;
}
// Descend right in place.
if (right_as_cons != NULL) {
cons_string = right_as_cons;
continue;
}
// Terminate.
break;
}
return is_one_byte_;
}
bool is_one_byte_;
DISALLOW_COPY_AND_ASSIGN(ContainsOnlyOneByteHelper);
};
bool String::ContainsOnlyOneByte() const {
i::Handle<i::String> str = Utils::OpenHandle(this);
if (str->HasOnlyOneByteChars()) return true;
ContainsOnlyOneByteHelper helper;
return helper.Check(*str);
}
class Utf8LengthHelper : public i::AllStatic {
public:
enum State {
kEndsWithLeadingSurrogate = 1 << 0,
kStartsWithTrailingSurrogate = 1 << 1,
kLeftmostEdgeIsCalculated = 1 << 2,
kRightmostEdgeIsCalculated = 1 << 3,
kLeftmostEdgeIsSurrogate = 1 << 4,
kRightmostEdgeIsSurrogate = 1 << 5
};
static const uint8_t kInitialState = 0;
static inline bool EndsWithSurrogate(uint8_t state) {
return state & kEndsWithLeadingSurrogate;
}
static inline bool StartsWithSurrogate(uint8_t state) {
return state & kStartsWithTrailingSurrogate;
}
class Visitor {
public:
Visitor() : utf8_length_(0), state_(kInitialState) {}
void VisitOneByteString(const uint8_t* chars, int length) {
int utf8_length = 0;
// Add in length 1 for each non-Latin1 character.
for (int i = 0; i < length; i++) {
utf8_length += *chars++ >> 7;
}
// Add in length 1 for each character.
utf8_length_ = utf8_length + length;
state_ = kInitialState;
}
void VisitTwoByteString(const uint16_t* chars, int length) {
int utf8_length = 0;
int last_character = unibrow::Utf16::kNoPreviousCharacter;
for (int i = 0; i < length; i++) {
uint16_t c = chars[i];
utf8_length += unibrow::Utf8::Length(c, last_character);
last_character = c;
}
utf8_length_ = utf8_length;
uint8_t state = 0;
if (unibrow::Utf16::IsTrailSurrogate(chars[0])) {
state |= kStartsWithTrailingSurrogate;
}
if (unibrow::Utf16::IsLeadSurrogate(chars[length-1])) {
state |= kEndsWithLeadingSurrogate;
}
state_ = state;
}
static i::ConsString* VisitFlat(i::String* string,
int* length,
uint8_t* state) {
Visitor visitor;
i::ConsString* cons_string = i::String::VisitFlat(&visitor, string);
*length = visitor.utf8_length_;
*state = visitor.state_;
return cons_string;
}
private:
int utf8_length_;
uint8_t state_;
DISALLOW_COPY_AND_ASSIGN(Visitor);
};
static inline void MergeLeafLeft(int* length,
uint8_t* state,
uint8_t leaf_state) {
bool edge_surrogate = StartsWithSurrogate(leaf_state);
if (!(*state & kLeftmostEdgeIsCalculated)) {
DCHECK(!(*state & kLeftmostEdgeIsSurrogate));
*state |= kLeftmostEdgeIsCalculated
| (edge_surrogate ? kLeftmostEdgeIsSurrogate : 0);
} else if (EndsWithSurrogate(*state) && edge_surrogate) {
*length -= unibrow::Utf8::kBytesSavedByCombiningSurrogates;
}
if (EndsWithSurrogate(leaf_state)) {
*state |= kEndsWithLeadingSurrogate;
} else {
*state &= ~kEndsWithLeadingSurrogate;
}
}
static inline void MergeLeafRight(int* length,
uint8_t* state,
uint8_t leaf_state) {
bool edge_surrogate = EndsWithSurrogate(leaf_state);
if (!(*state & kRightmostEdgeIsCalculated)) {
DCHECK(!(*state & kRightmostEdgeIsSurrogate));
*state |= (kRightmostEdgeIsCalculated
| (edge_surrogate ? kRightmostEdgeIsSurrogate : 0));
} else if (edge_surrogate && StartsWithSurrogate(*state)) {
*length -= unibrow::Utf8::kBytesSavedByCombiningSurrogates;
}
if (StartsWithSurrogate(leaf_state)) {
*state |= kStartsWithTrailingSurrogate;
} else {
*state &= ~kStartsWithTrailingSurrogate;
}
}
static inline void MergeTerminal(int* length,
uint8_t state,
uint8_t* state_out) {
DCHECK((state & kLeftmostEdgeIsCalculated) &&
(state & kRightmostEdgeIsCalculated));
if (EndsWithSurrogate(state) && StartsWithSurrogate(state)) {
*length -= unibrow::Utf8::kBytesSavedByCombiningSurrogates;
}
*state_out = kInitialState |
(state & kLeftmostEdgeIsSurrogate ? kStartsWithTrailingSurrogate : 0) |
(state & kRightmostEdgeIsSurrogate ? kEndsWithLeadingSurrogate : 0);
}
static int Calculate(i::ConsString* current, uint8_t* state_out) {
using namespace internal;
int total_length = 0;
uint8_t state = kInitialState;
while (true) {
i::String* left = current->first();
i::String* right = current->second();
uint8_t right_leaf_state;
uint8_t left_leaf_state;
int leaf_length;
ConsString* left_as_cons =
Visitor::VisitFlat(left, &leaf_length, &left_leaf_state);
if (left_as_cons == NULL) {
total_length += leaf_length;
MergeLeafLeft(&total_length, &state, left_leaf_state);
}
ConsString* right_as_cons =
Visitor::VisitFlat(right, &leaf_length, &right_leaf_state);
if (right_as_cons == NULL) {
total_length += leaf_length;
MergeLeafRight(&total_length, &state, right_leaf_state);
if (left_as_cons != NULL) {
// 1 Leaf node. Descend in place.
current = left_as_cons;
continue;
} else {
// Terminal node.
MergeTerminal(&total_length, state, state_out);
return total_length;
}
} else if (left_as_cons == NULL) {
// 1 Leaf node. Descend in place.
current = right_as_cons;
continue;
}
// Both strings are ConsStrings.
// Recurse on smallest.
if (left->length() < right->length()) {
total_length += Calculate(left_as_cons, &left_leaf_state);
MergeLeafLeft(&total_length, &state, left_leaf_state);
current = right_as_cons;
} else {
total_length += Calculate(right_as_cons, &right_leaf_state);
MergeLeafRight(&total_length, &state, right_leaf_state);
current = left_as_cons;
}
}
UNREACHABLE();
return 0;
}
static inline int Calculate(i::ConsString* current) {
uint8_t state = kInitialState;
return Calculate(current, &state);
}
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(Utf8LengthHelper);
};
static int Utf8Length(i::String* str, i::Isolate* isolate) {
int length = str->length();
if (length == 0) return 0;
uint8_t state;
i::ConsString* cons_string =
Utf8LengthHelper::Visitor::VisitFlat(str, &length, &state);
if (cons_string == NULL) return length;
return Utf8LengthHelper::Calculate(cons_string);
}
int String::Utf8Length() const {
i::Handle<i::String> str = Utils::OpenHandle(this);
i::Isolate* isolate = str->GetIsolate();
return v8::Utf8Length(*str, isolate);
}
class Utf8WriterVisitor {
public:
Utf8WriterVisitor(
char* buffer,
int capacity,
bool skip_capacity_check,
bool replace_invalid_utf8)
: early_termination_(false),
last_character_(unibrow::Utf16::kNoPreviousCharacter),
buffer_(buffer),
start_(buffer),
capacity_(capacity),
skip_capacity_check_(capacity == -1 || skip_capacity_check),
replace_invalid_utf8_(replace_invalid_utf8),
utf16_chars_read_(0) {
}
static int WriteEndCharacter(uint16_t character,
int last_character,
int remaining,
char* const buffer,
bool replace_invalid_utf8) {
using namespace unibrow;
DCHECK(remaining > 0);
// We can't use a local buffer here because Encode needs to modify
// previous characters in the stream. We know, however, that
// exactly one character will be advanced.
if (Utf16::IsSurrogatePair(last_character, character)) {
int written = Utf8::Encode(buffer,
character,
last_character,
replace_invalid_utf8);
DCHECK(written == 1);
return written;
}
// Use a scratch buffer to check the required characters.
char temp_buffer[Utf8::kMaxEncodedSize];
// Can't encode using last_character as gcc has array bounds issues.
int written = Utf8::Encode(temp_buffer,
character,
Utf16::kNoPreviousCharacter,
replace_invalid_utf8);
// Won't fit.
if (written > remaining) return 0;
// Copy over the character from temp_buffer.
for (int j = 0; j < written; j++) {
buffer[j] = temp_buffer[j];
}
return written;
}
// Visit writes out a group of code units (chars) of a v8::String to the
// internal buffer_. This is done in two phases. The first phase calculates a
// pesimistic estimate (writable_length) on how many code units can be safely
// written without exceeding the buffer capacity and without writing the last
// code unit (it could be a lead surrogate). The estimated number of code
// units is then written out in one go, and the reported byte usage is used
// to correct the estimate. This is repeated until the estimate becomes <= 0
// or all code units have been written out. The second phase writes out code
// units until the buffer capacity is reached, would be exceeded by the next
// unit, or all units have been written out.
template<typename Char>
void Visit(const Char* chars, const int length) {
using namespace unibrow;
DCHECK(!early_termination_);
if (length == 0) return;
// Copy state to stack.
char* buffer = buffer_;
int last_character =
sizeof(Char) == 1 ? Utf16::kNoPreviousCharacter : last_character_;
int i = 0;
// Do a fast loop where there is no exit capacity check.
while (true) {
int fast_length;
if (skip_capacity_check_) {
fast_length = length;
} else {
int remaining_capacity = capacity_ - static_cast<int>(buffer - start_);
// Need enough space to write everything but one character.
STATIC_ASSERT(Utf16::kMaxExtraUtf8BytesForOneUtf16CodeUnit == 3);
int max_size_per_char = sizeof(Char) == 1 ? 2 : 3;
int writable_length =
(remaining_capacity - max_size_per_char)/max_size_per_char;
// Need to drop into slow loop.
if (writable_length <= 0) break;
fast_length = i + writable_length;
if (fast_length > length) fast_length = length;
}
// Write the characters to the stream.
if (sizeof(Char) == 1) {
for (; i < fast_length; i++) {
buffer +=
Utf8::EncodeOneByte(buffer, static_cast<uint8_t>(*chars++));
DCHECK(capacity_ == -1 || (buffer - start_) <= capacity_);
}
} else {
for (; i < fast_length; i++) {
uint16_t character = *chars++;
buffer += Utf8::Encode(buffer,
character,
last_character,
replace_invalid_utf8_);
last_character = character;
DCHECK(capacity_ == -1 || (buffer - start_) <= capacity_);
}
}
// Array is fully written. Exit.
if (fast_length == length) {
// Write state back out to object.
last_character_ = last_character;
buffer_ = buffer;
utf16_chars_read_ += length;
return;
}
}
DCHECK(!skip_capacity_check_);
// Slow loop. Must check capacity on each iteration.
int remaining_capacity = capacity_ - static_cast<int>(buffer - start_);
DCHECK(remaining_capacity >= 0);
for (; i < length && remaining_capacity > 0; i++) {
uint16_t character = *chars++;
// remaining_capacity is <= 3 bytes at this point, so we do not write out
// an umatched lead surrogate.
if (replace_invalid_utf8_ && Utf16::IsLeadSurrogate(character)) {
early_termination_ = true;
break;
}
int written = WriteEndCharacter(character,
last_character,
remaining_capacity,
buffer,
replace_invalid_utf8_);
if (written == 0) {
early_termination_ = true;
break;
}
buffer += written;
remaining_capacity -= written;
last_character = character;
}
// Write state back out to object.
last_character_ = last_character;
buffer_ = buffer;
utf16_chars_read_ += i;
}
inline bool IsDone() {
return early_termination_;
}
inline void VisitOneByteString(const uint8_t* chars, int length) {
Visit(chars, length);
}
inline void VisitTwoByteString(const uint16_t* chars, int length) {
Visit(chars, length);
}
int CompleteWrite(bool write_null, int* utf16_chars_read_out) {
// Write out number of utf16 characters written to the stream.
if (utf16_chars_read_out != NULL) {
*utf16_chars_read_out = utf16_chars_read_;
}
// Only null terminate if all of the string was written and there's space.
if (write_null &&
!early_termination_ &&
(capacity_ == -1 || (buffer_ - start_) < capacity_)) {
*buffer_++ = '\0';
}
return static_cast<int>(buffer_ - start_);
}
private:
bool early_termination_;
int last_character_;
char* buffer_;
char* const start_;
int capacity_;
bool const skip_capacity_check_;
bool const replace_invalid_utf8_;
int utf16_chars_read_;
DISALLOW_IMPLICIT_CONSTRUCTORS(Utf8WriterVisitor);
};
static bool RecursivelySerializeToUtf8(i::String* current,
Utf8WriterVisitor* writer,
int recursion_budget) {
while (!writer->IsDone()) {
i::ConsString* cons_string = i::String::VisitFlat(writer, current);
if (cons_string == NULL) return true; // Leaf node.
if (recursion_budget <= 0) return false;
// Must write the left branch first.
i::String* first = cons_string->first();
bool success = RecursivelySerializeToUtf8(first,
writer,
recursion_budget - 1);
if (!success) return false;
// Inline tail recurse for right branch.
current = cons_string->second();
}
return true;
}
int String::WriteUtf8(char* buffer,
int capacity,
int* nchars_ref,
int options) const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
LOG_API(isolate, "String::WriteUtf8");
ENTER_V8(isolate);
i::Handle<i::String> str = Utils::OpenHandle(this);
if (options & HINT_MANY_WRITES_EXPECTED) {
str = i::String::Flatten(str); // Flatten the string for efficiency.
}
const int string_length = str->length();
bool write_null = !(options & NO_NULL_TERMINATION);
bool replace_invalid_utf8 = (options & REPLACE_INVALID_UTF8);
int max16BitCodeUnitSize = unibrow::Utf8::kMax16BitCodeUnitSize;
// First check if we can just write the string without checking capacity.
if (capacity == -1 || capacity / max16BitCodeUnitSize >= string_length) {
Utf8WriterVisitor writer(buffer, capacity, true, replace_invalid_utf8);
const int kMaxRecursion = 100;
bool success = RecursivelySerializeToUtf8(*str, &writer, kMaxRecursion);
if (success) return writer.CompleteWrite(write_null, nchars_ref);
} else if (capacity >= string_length) {
// First check that the buffer is large enough.
int utf8_bytes = v8::Utf8Length(*str, str->GetIsolate());
if (utf8_bytes <= capacity) {
// one-byte fast path.
if (utf8_bytes == string_length) {
WriteOneByte(reinterpret_cast<uint8_t*>(buffer), 0, capacity, options);
if (nchars_ref != NULL) *nchars_ref = string_length;
if (write_null && (utf8_bytes+1 <= capacity)) {
return string_length + 1;
}
return string_length;
}
if (write_null && (utf8_bytes+1 > capacity)) {
options |= NO_NULL_TERMINATION;
}
// Recurse once without a capacity limit.
// This will get into the first branch above.
// TODO(dcarney) Check max left rec. in Utf8Length and fall through.
return WriteUtf8(buffer, -1, nchars_ref, options);
}
}
// Recursive slow path can potentially be unreasonable slow. Flatten.
str = i::String::Flatten(str);
Utf8WriterVisitor writer(buffer, capacity, false, replace_invalid_utf8);
i::String::VisitFlat(&writer, *str);
return writer.CompleteWrite(write_null, nchars_ref);
}
template<typename CharType>
static inline int WriteHelper(const String* string,
CharType* buffer,
int start,
int length,
int options) {
i::Isolate* isolate = Utils::OpenHandle(string)->GetIsolate();
LOG_API(isolate, "String::Write");
ENTER_V8(isolate);
DCHECK(start >= 0 && length >= -1);
i::Handle<i::String> str = Utils::OpenHandle(string);
if (options & String::HINT_MANY_WRITES_EXPECTED) {
// Flatten the string for efficiency. This applies whether we are
// using StringCharacterStream or Get(i) to access the characters.
str = i::String::Flatten(str);
}
int end = start + length;
if ((length == -1) || (length > str->length() - start) )
end = str->length();
if (end < 0) return 0;
i::String::WriteToFlat(*str, buffer, start, end);
if (!(options & String::NO_NULL_TERMINATION) &&
(length == -1 || end - start < length)) {
buffer[end - start] = '\0';
}
return end - start;
}
int String::WriteOneByte(uint8_t* buffer,
int start,
int length,
int options) const {
return WriteHelper(this, buffer, start, length, options);
}
int String::Write(uint16_t* buffer,
int start,
int length,
int options) const {
return WriteHelper(this, buffer, start, length, options);
}
bool v8::String::IsExternal() const {
i::Handle<i::String> str = Utils::OpenHandle(this);
return i::StringShape(*str).IsExternalTwoByte();
}
bool v8::String::IsExternalOneByte() const {
i::Handle<i::String> str = Utils::OpenHandle(this);
return i::StringShape(*str).IsExternalOneByte();
}
void v8::String::VerifyExternalStringResource(
v8::String::ExternalStringResource* value) const {
i::Handle<i::String> str = Utils::OpenHandle(this);
const v8::String::ExternalStringResource* expected;
if (i::StringShape(*str).IsExternalTwoByte()) {
const void* resource =
i::Handle<i::ExternalTwoByteString>::cast(str)->resource();
expected = reinterpret_cast<const ExternalStringResource*>(resource);
} else {
expected = NULL;
}
CHECK_EQ(expected, value);
}
void v8::String::VerifyExternalStringResourceBase(
v8::String::ExternalStringResourceBase* value, Encoding encoding) const {
i::Handle<i::String> str = Utils::OpenHandle(this);
const v8::String::ExternalStringResourceBase* expected;
Encoding expectedEncoding;
if (i::StringShape(*str).IsExternalOneByte()) {
const void* resource =
i::Handle<i::ExternalOneByteString>::cast(str)->resource();
expected = reinterpret_cast<const ExternalStringResourceBase*>(resource);
expectedEncoding = ONE_BYTE_ENCODING;
} else if (i::StringShape(*str).IsExternalTwoByte()) {
const void* resource =
i::Handle<i::ExternalTwoByteString>::cast(str)->resource();
expected = reinterpret_cast<const ExternalStringResourceBase*>(resource);
expectedEncoding = TWO_BYTE_ENCODING;
} else {
expected = NULL;
expectedEncoding =
str->IsOneByteRepresentation() ? ONE_BYTE_ENCODING : TWO_BYTE_ENCODING;
}
CHECK_EQ(expected, value);
CHECK_EQ(expectedEncoding, encoding);
}
const v8::String::ExternalOneByteStringResource*
v8::String::GetExternalOneByteStringResource() const {
i::Handle<i::String> str = Utils::OpenHandle(this);
if (i::StringShape(*str).IsExternalOneByte()) {
const void* resource =
i::Handle<i::ExternalOneByteString>::cast(str)->resource();
return reinterpret_cast<const ExternalOneByteStringResource*>(resource);
} else {
return NULL;
}
}
Local<Value> Symbol::Name() const {
i::Handle<i::Symbol> sym = Utils::OpenHandle(this);
i::Handle<i::Object> name(sym->name(), sym->GetIsolate());
return Utils::ToLocal(name);
}
double Number::Value() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->Number();
}
bool Boolean::Value() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->IsTrue();
}
int64_t Integer::Value() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
return static_cast<int64_t>(obj->Number());
}
}
int32_t Int32::Value() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
return static_cast<int32_t>(obj->Number());
}
}
uint32_t Uint32::Value() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::cast(*obj)->value();
} else {
return static_cast<uint32_t>(obj->Number());
}
}
int v8::Object::InternalFieldCount() {
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
return obj->GetInternalFieldCount();
}
static bool InternalFieldOK(i::Handle<i::JSObject> obj,
int index,
const char* location) {
return Utils::ApiCheck(index < obj->GetInternalFieldCount(),
location,
"Internal field out of bounds");
}
Local<Value> v8::Object::SlowGetInternalField(int index) {
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::GetInternalField()";
if (!InternalFieldOK(obj, index, location)) return Local<Value>();
i::Handle<i::Object> value(obj->GetInternalField(index), obj->GetIsolate());
return Utils::ToLocal(value);
}
void v8::Object::SetInternalField(int index, v8::Local<Value> value) {
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::SetInternalField()";
if (!InternalFieldOK(obj, index, location)) return;
i::Handle<i::Object> val = Utils::OpenHandle(*value);
obj->SetInternalField(index, *val);
}
void* v8::Object::SlowGetAlignedPointerFromInternalField(int index) {
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::GetAlignedPointerFromInternalField()";
if (!InternalFieldOK(obj, index, location)) return NULL;
return DecodeSmiToAligned(obj->GetInternalField(index), location);
}
void v8::Object::SetAlignedPointerInInternalField(int index, void* value) {
i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::SetAlignedPointerInInternalField()";
if (!InternalFieldOK(obj, index, location)) return;
obj->SetInternalField(index, EncodeAlignedAsSmi(value, location));
DCHECK_EQ(value, GetAlignedPointerFromInternalField(index));
}
static void* ExternalValue(i::Object* obj) {
// Obscure semantics for undefined, but somehow checked in our unit tests...
if (obj->IsUndefined()) return NULL;
i::Object* foreign = i::JSObject::cast(obj)->GetInternalField(0);
return i::Foreign::cast(foreign)->foreign_address();
}
// --- E n v i r o n m e n t ---
void v8::V8::InitializePlatform(Platform* platform) {
i::V8::InitializePlatform(platform);
}
void v8::V8::ShutdownPlatform() {
i::V8::ShutdownPlatform();
}
bool v8::V8::Initialize() {
i::V8::Initialize();
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
i::ReadNatives();
#endif
return true;
}
void v8::V8::SetEntropySource(EntropySource entropy_source) {
base::RandomNumberGenerator::SetEntropySource(entropy_source);
}
void v8::V8::SetReturnAddressLocationResolver(
ReturnAddressLocationResolver return_address_resolver) {
i::StackFrame::SetReturnAddressLocationResolver(return_address_resolver);
}
bool v8::V8::Dispose() {
i::V8::TearDown();
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
i::DisposeNatives();
#endif
return true;
}
HeapStatistics::HeapStatistics(): total_heap_size_(0),
total_heap_size_executable_(0),
total_physical_size_(0),
used_heap_size_(0),
heap_size_limit_(0) { }
HeapSpaceStatistics::HeapSpaceStatistics(): space_name_(0),
space_size_(0),
space_used_size_(0),
space_available_size_(0),
physical_space_size_(0) { }
HeapObjectStatistics::HeapObjectStatistics()
: object_type_(nullptr),
object_sub_type_(nullptr),
object_count_(0),
object_size_(0) {}
bool v8::V8::InitializeICU(const char* icu_data_file) {
return i::InitializeICU(icu_data_file);
}
void v8::V8::InitializeExternalStartupData(const char* directory_path) {
i::InitializeExternalStartupData(directory_path);
}
void v8::V8::InitializeExternalStartupData(const char* natives_blob,
const char* snapshot_blob) {
i::InitializeExternalStartupData(natives_blob, snapshot_blob);
}
const char* v8::V8::GetVersion() {
return i::Version::GetVersion();
}
static i::Handle<i::Context> CreateEnvironment(
i::Isolate* isolate, v8::ExtensionConfiguration* extensions,
v8::Local<ObjectTemplate> global_template,
v8::Local<Value> maybe_global_proxy) {
i::Handle<i::Context> env;
// Enter V8 via an ENTER_V8 scope.
{
ENTER_V8(isolate);
v8::Local<ObjectTemplate> proxy_template = global_template;
i::Handle<i::FunctionTemplateInfo> proxy_constructor;
i::Handle<i::FunctionTemplateInfo> global_constructor;
if (!global_template.IsEmpty()) {
// Make sure that the global_template has a constructor.
global_constructor = EnsureConstructor(isolate, *global_template);
// Create a fresh template for the global proxy object.
proxy_template = ObjectTemplate::New(
reinterpret_cast<v8::Isolate*>(isolate));
proxy_constructor = EnsureConstructor(isolate, *proxy_template);
// Set the global template to be the prototype template of
// global proxy template.
proxy_constructor->set_prototype_template(
*Utils::OpenHandle(*global_template));
// Migrate security handlers from global_template to
// proxy_template. Temporarily removing access check
// information from the global template.
if (!global_constructor->access_check_info()->IsUndefined()) {
proxy_constructor->set_access_check_info(
global_constructor->access_check_info());
proxy_constructor->set_needs_access_check(
global_constructor->needs_access_check());
global_constructor->set_needs_access_check(false);
global_constructor->set_access_check_info(
isolate->heap()->undefined_value());
}
}
i::Handle<i::Object> proxy = Utils::OpenHandle(*maybe_global_proxy, true);
i::MaybeHandle<i::JSGlobalProxy> maybe_proxy;
if (!proxy.is_null()) {
maybe_proxy = i::Handle<i::JSGlobalProxy>::cast(proxy);
}
// Create the environment.
env = isolate->bootstrapper()->CreateEnvironment(
maybe_proxy, proxy_template, extensions);
// Restore the access check info on the global template.
if (!global_template.IsEmpty()) {
DCHECK(!global_constructor.is_null());
DCHECK(!proxy_constructor.is_null());
global_constructor->set_access_check_info(
proxy_constructor->access_check_info());
global_constructor->set_needs_access_check(
proxy_constructor->needs_access_check());
}
}
// Leave V8.
return env;
}
Local<Context> v8::Context::New(v8::Isolate* external_isolate,
v8::ExtensionConfiguration* extensions,
v8::Local<ObjectTemplate> global_template,
v8::Local<Value> global_object) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external_isolate);
LOG_API(isolate, "Context::New");
i::HandleScope scope(isolate);
ExtensionConfiguration no_extensions;
if (extensions == NULL) extensions = &no_extensions;
i::Handle<i::Context> env =
CreateEnvironment(isolate, extensions, global_template, global_object);
if (env.is_null()) {
if (isolate->has_pending_exception()) {
isolate->OptionalRescheduleException(true);
}
return Local<Context>();
}
return Utils::ToLocal(scope.CloseAndEscape(env));
}
void v8::Context::SetSecurityToken(Local<Value> token) {
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Handle<i::Object> token_handle = Utils::OpenHandle(*token);
env->set_security_token(*token_handle);
}
void v8::Context::UseDefaultSecurityToken() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
env->set_security_token(env->global_object());
}
Local<Value> v8::Context::GetSecurityToken() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Isolate* isolate = env->GetIsolate();
i::Object* security_token = env->security_token();
i::Handle<i::Object> token_handle(security_token, isolate);
return Utils::ToLocal(token_handle);
}
v8::Isolate* Context::GetIsolate() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
return reinterpret_cast<Isolate*>(env->GetIsolate());
}
v8::Local<v8::Object> Context::Global() {
i::Handle<i::Context> context = Utils::OpenHandle(this);
i::Isolate* isolate = context->GetIsolate();
i::Handle<i::Object> global(context->global_proxy(), isolate);
// TODO(dcarney): This should always return the global proxy
// but can't presently as calls to GetProtoype will return the wrong result.
if (i::Handle<i::JSGlobalProxy>::cast(
global)->IsDetachedFrom(context->global_object())) {
global = i::Handle<i::Object>(context->global_object(), isolate);
}
return Utils::ToLocal(i::Handle<i::JSObject>::cast(global));
}
void Context::DetachGlobal() {
i::Handle<i::Context> context = Utils::OpenHandle(this);
i::Isolate* isolate = context->GetIsolate();
ENTER_V8(isolate);
isolate->bootstrapper()->DetachGlobal(context);
}
Local<v8::Object> Context::GetExtrasBindingObject() {
i::Handle<i::Context> context = Utils::OpenHandle(this);
i::Isolate* isolate = context->GetIsolate();
i::Handle<i::JSObject> binding(context->extras_binding_object(), isolate);
return Utils::ToLocal(binding);
}
void Context::AllowCodeGenerationFromStrings(bool allow) {
i::Handle<i::Context> context = Utils::OpenHandle(this);
i::Isolate* isolate = context->GetIsolate();
ENTER_V8(isolate);
context->set_allow_code_gen_from_strings(
allow ? isolate->heap()->true_value() : isolate->heap()->false_value());
}
bool Context::IsCodeGenerationFromStringsAllowed() {
i::Handle<i::Context> context = Utils::OpenHandle(this);
return !context->allow_code_gen_from_strings()->IsFalse();
}
void Context::SetErrorMessageForCodeGenerationFromStrings(Local<String> error) {
i::Handle<i::Context> context = Utils::OpenHandle(this);
i::Handle<i::String> error_handle = Utils::OpenHandle(*error);
context->set_error_message_for_code_gen_from_strings(*error_handle);
}
size_t Context::EstimatedSize() {
return static_cast<size_t>(
i::ContextMeasure(*Utils::OpenHandle(this)).Size());
}
MaybeLocal<v8::Object> ObjectTemplate::NewInstance(Local<Context> context) {
PREPARE_FOR_EXECUTION(context, "v8::ObjectTemplate::NewInstance()", Object);
auto self = Utils::OpenHandle(this);
Local<Object> result;
has_pending_exception =
!ToLocal<Object>(i::ApiNatives::InstantiateObject(self), &result);
RETURN_ON_FAILED_EXECUTION(Object);
RETURN_ESCAPED(result);
}
Local<v8::Object> ObjectTemplate::NewInstance() {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(NewInstance(context), Object);
}
MaybeLocal<v8::Function> FunctionTemplate::GetFunction(Local<Context> context) {
PREPARE_FOR_EXECUTION(context, "v8::FunctionTemplate::GetFunction()",
Function);
auto self = Utils::OpenHandle(this);
Local<Function> result;
has_pending_exception =
!ToLocal<Function>(i::ApiNatives::InstantiateFunction(self), &result);
RETURN_ON_FAILED_EXECUTION(Function);
RETURN_ESCAPED(result);
}
Local<v8::Function> FunctionTemplate::GetFunction() {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(GetFunction(context), Function);
}
bool FunctionTemplate::HasInstance(v8::Local<v8::Value> value) {
auto self = Utils::OpenHandle(this);
auto obj = Utils::OpenHandle(*value);
return self->IsTemplateFor(*obj);
}
Local<External> v8::External::New(Isolate* isolate, void* value) {
STATIC_ASSERT(sizeof(value) == sizeof(i::Address));
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "External::New");
ENTER_V8(i_isolate);
i::Handle<i::JSObject> external = i_isolate->factory()->NewExternal(value);
return Utils::ExternalToLocal(external);
}
void* External::Value() const {
return ExternalValue(*Utils::OpenHandle(this));
}
// anonymous namespace for string creation helper functions
namespace {
inline int StringLength(const char* string) {
return i::StrLength(string);
}
inline int StringLength(const uint8_t* string) {
return i::StrLength(reinterpret_cast<const char*>(string));
}
inline int StringLength(const uint16_t* string) {
int length = 0;
while (string[length] != '\0')
length++;
return length;
}
MUST_USE_RESULT
inline i::MaybeHandle<i::String> NewString(i::Factory* factory,
v8::NewStringType type,
i::Vector<const char> string) {
if (type == v8::NewStringType::kInternalized) {
return factory->InternalizeUtf8String(string);
}
return factory->NewStringFromUtf8(string);
}
MUST_USE_RESULT
inline i::MaybeHandle<i::String> NewString(i::Factory* factory,
v8::NewStringType type,
i::Vector<const uint8_t> string) {
if (type == v8::NewStringType::kInternalized) {
return factory->InternalizeOneByteString(string);
}
return factory->NewStringFromOneByte(string);
}
MUST_USE_RESULT
inline i::MaybeHandle<i::String> NewString(i::Factory* factory,
v8::NewStringType type,
i::Vector<const uint16_t> string) {
if (type == v8::NewStringType::kInternalized) {
return factory->InternalizeTwoByteString(string);
}
return factory->NewStringFromTwoByte(string);
}
STATIC_ASSERT(v8::String::kMaxLength == i::String::kMaxLength);
template <typename Char>
inline MaybeLocal<String> NewString(Isolate* v8_isolate, const char* location,
const char* env, const Char* data,
v8::NewStringType type, int length) {
i::Isolate* isolate = reinterpret_cast<internal::Isolate*>(v8_isolate);
if (length == 0) return String::Empty(v8_isolate);
// TODO(dcarney): throw a context free exception.
if (length > i::String::kMaxLength) return MaybeLocal<String>();
ENTER_V8(isolate);
LOG_API(isolate, env);
if (length < 0) length = StringLength(data);
i::Handle<i::String> result =
NewString(isolate->factory(), type, i::Vector<const Char>(data, length))
.ToHandleChecked();
return Utils::ToLocal(result);
}
} // anonymous namespace
Local<String> String::NewFromUtf8(Isolate* isolate,
const char* data,
NewStringType type,
int length) {
RETURN_TO_LOCAL_UNCHECKED(
NewString(isolate, "v8::String::NewFromUtf8()", "String::NewFromUtf8",
data, static_cast<v8::NewStringType>(type), length),
String);
}
MaybeLocal<String> String::NewFromUtf8(Isolate* isolate, const char* data,
v8::NewStringType type, int length) {
return NewString(isolate, "v8::String::NewFromUtf8()", "String::NewFromUtf8",
data, type, length);
}
Local<String> String::NewFromOneByte(Isolate* isolate,
const uint8_t* data,
NewStringType type,
int length) {
RETURN_TO_LOCAL_UNCHECKED(
NewString(isolate, "v8::String::NewFromOneByte()",
"String::NewFromOneByte", data,
static_cast<v8::NewStringType>(type), length),
String);
}
MaybeLocal<String> String::NewFromOneByte(Isolate* isolate, const uint8_t* data,
v8::NewStringType type, int length) {
return NewString(isolate, "v8::String::NewFromOneByte()",
"String::NewFromOneByte", data, type, length);
}
Local<String> String::NewFromTwoByte(Isolate* isolate,
const uint16_t* data,
NewStringType type,
int length) {
RETURN_TO_LOCAL_UNCHECKED(
NewString(isolate, "v8::String::NewFromTwoByte()",
"String::NewFromTwoByte", data,
static_cast<v8::NewStringType>(type), length),
String);
}
MaybeLocal<String> String::NewFromTwoByte(Isolate* isolate,
const uint16_t* data,
v8::NewStringType type, int length) {
return NewString(isolate, "v8::String::NewFromTwoByte()",
"String::NewFromTwoByte", data, type, length);
}
Local<String> v8::String::Concat(Local<String> left, Local<String> right) {
i::Handle<i::String> left_string = Utils::OpenHandle(*left);
i::Isolate* isolate = left_string->GetIsolate();
ENTER_V8(isolate);
LOG_API(isolate, "v8::String::Concat");
i::Handle<i::String> right_string = Utils::OpenHandle(*right);
// If we are steering towards a range error, do not wait for the error to be
// thrown, and return the null handle instead.
if (left_string->length() + right_string->length() > i::String::kMaxLength) {
return Local<String>();
}
i::Handle<i::String> result = isolate->factory()->NewConsString(
left_string, right_string).ToHandleChecked();
return Utils::ToLocal(result);
}
MaybeLocal<String> v8::String::NewExternalTwoByte(
Isolate* isolate, v8::String::ExternalStringResource* resource) {
CHECK(resource && resource->data());
// TODO(dcarney): throw a context free exception.
if (resource->length() > static_cast<size_t>(i::String::kMaxLength)) {
return MaybeLocal<String>();
}
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8(i_isolate);
LOG_API(i_isolate, "String::NewExternalTwoByte");
i::Handle<i::String> string = i_isolate->factory()
->NewExternalStringFromTwoByte(resource)
.ToHandleChecked();
i_isolate->heap()->RegisterExternalString(*string);
return Utils::ToLocal(string);
}
Local<String> v8::String::NewExternal(
Isolate* isolate, v8::String::ExternalStringResource* resource) {
RETURN_TO_LOCAL_UNCHECKED(NewExternalTwoByte(isolate, resource), String);
}
MaybeLocal<String> v8::String::NewExternalOneByte(
Isolate* isolate, v8::String::ExternalOneByteStringResource* resource) {
CHECK(resource && resource->data());
// TODO(dcarney): throw a context free exception.
if (resource->length() > static_cast<size_t>(i::String::kMaxLength)) {
return MaybeLocal<String>();
}
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8(i_isolate);
LOG_API(i_isolate, "String::NewExternalOneByte");
i::Handle<i::String> string = i_isolate->factory()
->NewExternalStringFromOneByte(resource)
.ToHandleChecked();
i_isolate->heap()->RegisterExternalString(*string);
return Utils::ToLocal(string);
}
Local<String> v8::String::NewExternal(
Isolate* isolate, v8::String::ExternalOneByteStringResource* resource) {
RETURN_TO_LOCAL_UNCHECKED(NewExternalOneByte(isolate, resource), String);
}
bool v8::String::MakeExternal(v8::String::ExternalStringResource* resource) {
i::Handle<i::String> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
if (i::StringShape(*obj).IsExternal()) {
return false; // Already an external string.
}
ENTER_V8(isolate);
if (isolate->heap()->IsInGCPostProcessing()) {
return false;
}
CHECK(resource && resource->data());
bool result = obj->MakeExternal(resource);
// Assert that if CanMakeExternal(), then externalizing actually succeeds.
DCHECK(!CanMakeExternal() || result);
if (result) {
DCHECK(obj->IsExternalString());
isolate->heap()->RegisterExternalString(*obj);
}
return result;
}
bool v8::String::MakeExternal(
v8::String::ExternalOneByteStringResource* resource) {
i::Handle<i::String> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
if (i::StringShape(*obj).IsExternal()) {
return false; // Already an external string.
}
ENTER_V8(isolate);
if (isolate->heap()->IsInGCPostProcessing()) {
return false;
}
CHECK(resource && resource->data());
bool result = obj->MakeExternal(resource);
// Assert that if CanMakeExternal(), then externalizing actually succeeds.
DCHECK(!CanMakeExternal() || result);
if (result) {
DCHECK(obj->IsExternalString());
isolate->heap()->RegisterExternalString(*obj);
}
return result;
}
bool v8::String::CanMakeExternal() {
i::Handle<i::String> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
// Old space strings should be externalized.
if (!isolate->heap()->new_space()->Contains(*obj)) return true;
int size = obj->Size(); // Byte size of the original string.
if (size <= i::ExternalString::kShortSize) return false;
i::StringShape shape(*obj);
return !shape.IsExternal();
}
Isolate* v8::Object::GetIsolate() {
i::Isolate* i_isolate = Utils::OpenHandle(this)->GetIsolate();
return reinterpret_cast<Isolate*>(i_isolate);
}
Local<v8::Object> v8::Object::New(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "Object::New");
ENTER_V8(i_isolate);
i::Handle<i::JSObject> obj =
i_isolate->factory()->NewJSObject(i_isolate->object_function());
return Utils::ToLocal(obj);
}
Local<v8::Value> v8::NumberObject::New(Isolate* isolate, double value) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "NumberObject::New");
ENTER_V8(i_isolate);
i::Handle<i::Object> number = i_isolate->factory()->NewNumber(value);
i::Handle<i::Object> obj =
i::Object::ToObject(i_isolate, number).ToHandleChecked();
return Utils::ToLocal(obj);
}
double v8::NumberObject::ValueOf() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
i::Isolate* isolate = jsvalue->GetIsolate();
LOG_API(isolate, "NumberObject::NumberValue");
return jsvalue->value()->Number();
}
Local<v8::Value> v8::BooleanObject::New(bool value) {
i::Isolate* isolate = i::Isolate::Current();
LOG_API(isolate, "BooleanObject::New");
ENTER_V8(isolate);
i::Handle<i::Object> boolean(value
? isolate->heap()->true_value()
: isolate->heap()->false_value(),
isolate);
i::Handle<i::Object> obj =
i::Object::ToObject(isolate, boolean).ToHandleChecked();
return Utils::ToLocal(obj);
}
bool v8::BooleanObject::ValueOf() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
i::Isolate* isolate = jsvalue->GetIsolate();
LOG_API(isolate, "BooleanObject::BooleanValue");
return jsvalue->value()->IsTrue();
}
Local<v8::Value> v8::StringObject::New(Local<String> value) {
i::Handle<i::String> string = Utils::OpenHandle(*value);
i::Isolate* isolate = string->GetIsolate();
LOG_API(isolate, "StringObject::New");
ENTER_V8(isolate);
i::Handle<i::Object> obj =
i::Object::ToObject(isolate, string).ToHandleChecked();
return Utils::ToLocal(obj);
}
Local<v8::String> v8::StringObject::ValueOf() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
i::Isolate* isolate = jsvalue->GetIsolate();
LOG_API(isolate, "StringObject::StringValue");
return Utils::ToLocal(
i::Handle<i::String>(i::String::cast(jsvalue->value())));
}
Local<v8::Value> v8::SymbolObject::New(Isolate* isolate, Local<Symbol> value) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "SymbolObject::New");
ENTER_V8(i_isolate);
i::Handle<i::Object> obj = i::Object::ToObject(
i_isolate, Utils::OpenHandle(*value)).ToHandleChecked();
return Utils::ToLocal(obj);
}
Local<v8::Symbol> v8::SymbolObject::ValueOf() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::JSValue> jsvalue = i::Handle<i::JSValue>::cast(obj);
i::Isolate* isolate = jsvalue->GetIsolate();
LOG_API(isolate, "SymbolObject::SymbolValue");
return Utils::ToLocal(
i::Handle<i::Symbol>(i::Symbol::cast(jsvalue->value())));
}
MaybeLocal<v8::Value> v8::Date::New(Local<Context> context, double time) {
if (std::isnan(time)) {
// Introduce only canonical NaN value into the VM, to avoid signaling NaNs.
time = std::numeric_limits<double>::quiet_NaN();
}
PREPARE_FOR_EXECUTION(context, "Date::New", Value);
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(i::Execution::NewDate(isolate, time), &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
Local<v8::Value> v8::Date::New(Isolate* isolate, double time) {
auto context = isolate->GetCurrentContext();
RETURN_TO_LOCAL_UNCHECKED(New(context, time), Value);
}
double v8::Date::ValueOf() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
i::Handle<i::JSDate> jsdate = i::Handle<i::JSDate>::cast(obj);
i::Isolate* isolate = jsdate->GetIsolate();
LOG_API(isolate, "Date::NumberValue");
return jsdate->value()->Number();
}
void v8::Date::DateTimeConfigurationChangeNotification(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "Date::DateTimeConfigurationChangeNotification");
ENTER_V8(i_isolate);
i_isolate->date_cache()->ResetDateCache();
if (!i_isolate->eternal_handles()->Exists(
i::EternalHandles::DATE_CACHE_VERSION)) {
return;
}
i::Handle<i::FixedArray> date_cache_version =
i::Handle<i::FixedArray>::cast(i_isolate->eternal_handles()->GetSingleton(
i::EternalHandles::DATE_CACHE_VERSION));
DCHECK_EQ(1, date_cache_version->length());
CHECK(date_cache_version->get(0)->IsSmi());
date_cache_version->set(
0,
i::Smi::FromInt(i::Smi::cast(date_cache_version->get(0))->value() + 1));
}
static i::Handle<i::String> RegExpFlagsToString(RegExp::Flags flags) {
i::Isolate* isolate = i::Isolate::Current();
uint8_t flags_buf[3];
int num_flags = 0;
if ((flags & RegExp::kGlobal) != 0) flags_buf[num_flags++] = 'g';
if ((flags & RegExp::kMultiline) != 0) flags_buf[num_flags++] = 'm';
if ((flags & RegExp::kIgnoreCase) != 0) flags_buf[num_flags++] = 'i';
DCHECK(num_flags <= static_cast<int>(arraysize(flags_buf)));
return isolate->factory()->InternalizeOneByteString(
i::Vector<const uint8_t>(flags_buf, num_flags));
}
MaybeLocal<v8::RegExp> v8::RegExp::New(Local<Context> context,
Local<String> pattern, Flags flags) {
PREPARE_FOR_EXECUTION(context, "RegExp::New", RegExp);
Local<v8::RegExp> result;
has_pending_exception =
!ToLocal<RegExp>(i::Execution::NewJSRegExp(Utils::OpenHandle(*pattern),
RegExpFlagsToString(flags)),
&result);
RETURN_ON_FAILED_EXECUTION(RegExp);
RETURN_ESCAPED(result);
}
Local<v8::RegExp> v8::RegExp::New(Local<String> pattern, Flags flags) {
auto isolate =
reinterpret_cast<Isolate*>(Utils::OpenHandle(*pattern)->GetIsolate());
auto context = isolate->GetCurrentContext();
RETURN_TO_LOCAL_UNCHECKED(New(context, pattern, flags), RegExp);
}
Local<v8::String> v8::RegExp::GetSource() const {
i::Handle<i::JSRegExp> obj = Utils::OpenHandle(this);
return Utils::ToLocal(i::Handle<i::String>(obj->Pattern()));
}
// Assert that the static flags cast in GetFlags is valid.
#define REGEXP_FLAG_ASSERT_EQ(api_flag, internal_flag) \
STATIC_ASSERT(static_cast<int>(v8::RegExp::api_flag) == \
static_cast<int>(i::JSRegExp::internal_flag))
REGEXP_FLAG_ASSERT_EQ(kNone, NONE);
REGEXP_FLAG_ASSERT_EQ(kGlobal, GLOBAL);
REGEXP_FLAG_ASSERT_EQ(kIgnoreCase, IGNORE_CASE);
REGEXP_FLAG_ASSERT_EQ(kMultiline, MULTILINE);
#undef REGEXP_FLAG_ASSERT_EQ
v8::RegExp::Flags v8::RegExp::GetFlags() const {
i::Handle<i::JSRegExp> obj = Utils::OpenHandle(this);
return static_cast<RegExp::Flags>(obj->GetFlags().value());
}
Local<v8::Array> v8::Array::New(Isolate* isolate, int length) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "Array::New");
ENTER_V8(i_isolate);
int real_length = length > 0 ? length : 0;
i::Handle<i::JSArray> obj = i_isolate->factory()->NewJSArray(real_length);
i::Handle<i::Object> length_obj =
i_isolate->factory()->NewNumberFromInt(real_length);
obj->set_length(*length_obj);
return Utils::ToLocal(obj);
}
uint32_t v8::Array::Length() const {
i::Handle<i::JSArray> obj = Utils::OpenHandle(this);
i::Object* length = obj->length();
if (length->IsSmi()) {
return i::Smi::cast(length)->value();
} else {
return static_cast<uint32_t>(length->Number());
}
}
MaybeLocal<Object> Array::CloneElementAt(Local<Context> context,
uint32_t index) {
PREPARE_FOR_EXECUTION(context, "v8::Array::CloneElementAt()", Object);
auto self = Utils::OpenHandle(this);
if (!self->HasFastObjectElements()) return Local<Object>();
i::FixedArray* elms = i::FixedArray::cast(self->elements());
i::Object* paragon = elms->get(index);
if (!paragon->IsJSObject()) return Local<Object>();
i::Handle<i::JSObject> paragon_handle(i::JSObject::cast(paragon));
Local<Object> result;
has_pending_exception =
!ToLocal<Object>(isolate->factory()->CopyJSObject(paragon_handle),
&result);
RETURN_ON_FAILED_EXECUTION(Object);
RETURN_ESCAPED(result);
}
Local<Object> Array::CloneElementAt(uint32_t index) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(CloneElementAt(context, index), Object);
}
Local<v8::Map> v8::Map::New(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "Map::New");
ENTER_V8(i_isolate);
i::Handle<i::JSMap> obj = i_isolate->factory()->NewJSMap();
return Utils::ToLocal(obj);
}
size_t v8::Map::Size() const {
i::Handle<i::JSMap> obj = Utils::OpenHandle(this);
return i::OrderedHashMap::cast(obj->table())->NumberOfElements();
}
void Map::Clear() {
auto self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
LOG_API(isolate, "Map::Clear");
ENTER_V8(isolate);
i::JSMap::Clear(self);
}
MaybeLocal<Value> Map::Get(Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION(context, "Map::Get", Value);
auto self = Utils::OpenHandle(this);
Local<Value> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*key)};
has_pending_exception =
!ToLocal<Value>(i::Execution::Call(isolate, isolate->map_get(), self,
arraysize(argv), argv, false),
&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
MaybeLocal<Map> Map::Set(Local<Context> context, Local<Value> key,
Local<Value> value) {
PREPARE_FOR_EXECUTION(context, "Map::Set", Map);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*key),
Utils::OpenHandle(*value)};
has_pending_exception =
!i::Execution::Call(isolate, isolate->map_set(), self, arraysize(argv),
argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Map);
RETURN_ESCAPED(Local<Map>::Cast(Utils::ToLocal(result)));
}
Maybe<bool> Map::Has(Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "Map::Has", bool);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*key)};
has_pending_exception =
!i::Execution::Call(isolate, isolate->map_has(), self, arraysize(argv),
argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue());
}
Maybe<bool> Map::Delete(Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "Map::Delete", bool);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*key)};
has_pending_exception =
!i::Execution::Call(isolate, isolate->map_delete(), self, arraysize(argv),
argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue());
}
Local<Array> Map::AsArray() const {
i::Handle<i::JSMap> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
i::Factory* factory = isolate->factory();
LOG_API(isolate, "Map::AsArray");
ENTER_V8(isolate);
i::Handle<i::OrderedHashMap> table(i::OrderedHashMap::cast(obj->table()));
int size = table->NumberOfElements();
int length = size * 2;
i::Handle<i::FixedArray> result = factory->NewFixedArray(length);
for (int i = 0; i < size; ++i) {
if (table->KeyAt(i)->IsTheHole()) continue;
result->set(i * 2, table->KeyAt(i));
result->set(i * 2 + 1, table->ValueAt(i));
}
i::Handle<i::JSArray> result_array =
factory->NewJSArrayWithElements(result, i::FAST_ELEMENTS, length);
return Utils::ToLocal(result_array);
}
MaybeLocal<Map> Map::FromArray(Local<Context> context, Local<Array> array) {
PREPARE_FOR_EXECUTION(context, "Map::FromArray", Map);
if (array->Length() % 2 != 0) {
return MaybeLocal<Map>();
}
i::Handle<i::Object> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*array)};
has_pending_exception =
!i::Execution::Call(isolate, isolate->map_from_array(),
isolate->factory()->undefined_value(),
arraysize(argv), argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Map);
RETURN_ESCAPED(Local<Map>::Cast(Utils::ToLocal(result)));
}
Local<v8::Set> v8::Set::New(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "Set::New");
ENTER_V8(i_isolate);
i::Handle<i::JSSet> obj = i_isolate->factory()->NewJSSet();
return Utils::ToLocal(obj);
}
size_t v8::Set::Size() const {
i::Handle<i::JSSet> obj = Utils::OpenHandle(this);
return i::OrderedHashSet::cast(obj->table())->NumberOfElements();
}
void Set::Clear() {
auto self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
LOG_API(isolate, "Set::Clear");
ENTER_V8(isolate);
i::JSSet::Clear(self);
}
MaybeLocal<Set> Set::Add(Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION(context, "Set::Add", Set);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*key)};
has_pending_exception =
!i::Execution::Call(isolate, isolate->set_add(), self, arraysize(argv),
argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Set);
RETURN_ESCAPED(Local<Set>::Cast(Utils::ToLocal(result)));
}
Maybe<bool> Set::Has(Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "Set::Has", bool);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*key)};
has_pending_exception =
!i::Execution::Call(isolate, isolate->set_has(), self, arraysize(argv),
argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue());
}
Maybe<bool> Set::Delete(Local<Context> context, Local<Value> key) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "Set::Delete", bool);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*key)};
has_pending_exception =
!i::Execution::Call(isolate, isolate->set_delete(), self, arraysize(argv),
argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue());
}
Local<Array> Set::AsArray() const {
i::Handle<i::JSSet> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
i::Factory* factory = isolate->factory();
LOG_API(isolate, "Set::AsArray");
ENTER_V8(isolate);
i::Handle<i::OrderedHashSet> table(i::OrderedHashSet::cast(obj->table()));
int length = table->NumberOfElements();
i::Handle<i::FixedArray> result = factory->NewFixedArray(length);
for (int i = 0; i < length; ++i) {
i::Object* key = table->KeyAt(i);
if (!key->IsTheHole()) {
result->set(i, key);
}
}
i::Handle<i::JSArray> result_array =
factory->NewJSArrayWithElements(result, i::FAST_ELEMENTS, length);
return Utils::ToLocal(result_array);
}
MaybeLocal<Set> Set::FromArray(Local<Context> context, Local<Array> array) {
PREPARE_FOR_EXECUTION(context, "Set::FromArray", Set);
i::Handle<i::Object> result;
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*array)};
has_pending_exception =
!i::Execution::Call(isolate, isolate->set_from_array(),
isolate->factory()->undefined_value(),
arraysize(argv), argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Set);
RETURN_ESCAPED(Local<Set>::Cast(Utils::ToLocal(result)));
}
bool Value::IsPromise() const {
auto self = Utils::OpenHandle(this);
return i::Object::IsPromise(self);
}
MaybeLocal<Promise::Resolver> Promise::Resolver::New(Local<Context> context) {
PREPARE_FOR_EXECUTION(context, "Promise::Resolver::New", Resolver);
i::Handle<i::Object> result;
has_pending_exception = !i::Execution::Call(
isolate,
isolate->promise_create(),
isolate->factory()->undefined_value(),
0, NULL,
false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Promise::Resolver);
RETURN_ESCAPED(Local<Promise::Resolver>::Cast(Utils::ToLocal(result)));
}
Local<Promise::Resolver> Promise::Resolver::New(Isolate* isolate) {
RETURN_TO_LOCAL_UNCHECKED(New(isolate->GetCurrentContext()),
Promise::Resolver);
}
Local<Promise> Promise::Resolver::GetPromise() {
i::Handle<i::JSObject> promise = Utils::OpenHandle(this);
return Local<Promise>::Cast(Utils::ToLocal(promise));
}
Maybe<bool> Promise::Resolver::Resolve(Local<Context> context,
Local<Value> value) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "Promise::Resolver::Resolve", bool);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> argv[] = {self, Utils::OpenHandle(*value)};
has_pending_exception = i::Execution::Call(
isolate,
isolate->promise_resolve(),
isolate->factory()->undefined_value(),
arraysize(argv), argv,
false).is_null();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
void Promise::Resolver::Resolve(Local<Value> value) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
USE(Resolve(context, value));
}
Maybe<bool> Promise::Resolver::Reject(Local<Context> context,
Local<Value> value) {
PREPARE_FOR_EXECUTION_PRIMITIVE(context, "Promise::Resolver::Resolve", bool);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> argv[] = {self, Utils::OpenHandle(*value)};
has_pending_exception = i::Execution::Call(
isolate,
isolate->promise_reject(),
isolate->factory()->undefined_value(),
arraysize(argv), argv,
false).is_null();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
void Promise::Resolver::Reject(Local<Value> value) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
USE(Reject(context, value));
}
MaybeLocal<Promise> Promise::Chain(Local<Context> context,
Local<Function> handler) {
PREPARE_FOR_EXECUTION(context, "Promise::Chain", Promise);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> argv[] = {Utils::OpenHandle(*handler)};
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, isolate->promise_chain(), self,
arraysize(argv), argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Promise);
RETURN_ESCAPED(Local<Promise>::Cast(Utils::ToLocal(result)));
}
Local<Promise> Promise::Chain(Local<Function> handler) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(Chain(context, handler), Promise);
}
MaybeLocal<Promise> Promise::Catch(Local<Context> context,
Local<Function> handler) {
PREPARE_FOR_EXECUTION(context, "Promise::Catch", Promise);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> argv[] = { Utils::OpenHandle(*handler) };
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, isolate->promise_catch(), self,
arraysize(argv), argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Promise);
RETURN_ESCAPED(Local<Promise>::Cast(Utils::ToLocal(result)));
}
Local<Promise> Promise::Catch(Local<Function> handler) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(Catch(context, handler), Promise);
}
MaybeLocal<Promise> Promise::Then(Local<Context> context,
Local<Function> handler) {
PREPARE_FOR_EXECUTION(context, "Promise::Then", Promise);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> argv[] = { Utils::OpenHandle(*handler) };
i::Handle<i::Object> result;
has_pending_exception =
!i::Execution::Call(isolate, isolate->promise_then(), self,
arraysize(argv), argv, false).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Promise);
RETURN_ESCAPED(Local<Promise>::Cast(Utils::ToLocal(result)));
}
Local<Promise> Promise::Then(Local<Function> handler) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(Then(context, handler), Promise);
}
bool Promise::HasHandler() {
i::Handle<i::JSObject> promise = Utils::OpenHandle(this);
i::Isolate* isolate = promise->GetIsolate();
LOG_API(isolate, "Promise::HasRejectHandler");
ENTER_V8(isolate);
i::Handle<i::Symbol> key = isolate->factory()->promise_has_handler_symbol();
return i::JSReceiver::GetDataProperty(promise, key)->IsTrue();
}
bool v8::ArrayBuffer::IsExternal() const {
return Utils::OpenHandle(this)->is_external();
}
bool v8::ArrayBuffer::IsNeuterable() const {
return Utils::OpenHandle(this)->is_neuterable();
}
v8::ArrayBuffer::Contents v8::ArrayBuffer::Externalize() {
i::Handle<i::JSArrayBuffer> self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
Utils::ApiCheck(!self->is_external(), "v8::ArrayBuffer::Externalize",
"ArrayBuffer already externalized");
self->set_is_external(true);
isolate->heap()->UnregisterArrayBuffer(isolate->heap()->InNewSpace(*self),
self->backing_store());
return GetContents();
}
v8::ArrayBuffer::Contents v8::ArrayBuffer::GetContents() {
i::Handle<i::JSArrayBuffer> self = Utils::OpenHandle(this);
size_t byte_length = static_cast<size_t>(self->byte_length()->Number());
Contents contents;
contents.data_ = self->backing_store();
contents.byte_length_ = byte_length;
return contents;
}
void v8::ArrayBuffer::Neuter() {
i::Handle<i::JSArrayBuffer> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
Utils::ApiCheck(obj->is_external(),
"v8::ArrayBuffer::Neuter",
"Only externalized ArrayBuffers can be neutered");
Utils::ApiCheck(obj->is_neuterable(), "v8::ArrayBuffer::Neuter",
"Only neuterable ArrayBuffers can be neutered");
LOG_API(obj->GetIsolate(), "v8::ArrayBuffer::Neuter()");
ENTER_V8(isolate);
obj->Neuter();
}
size_t v8::ArrayBuffer::ByteLength() const {
i::Handle<i::JSArrayBuffer> obj = Utils::OpenHandle(this);
return static_cast<size_t>(obj->byte_length()->Number());
}
Local<ArrayBuffer> v8::ArrayBuffer::New(Isolate* isolate, size_t byte_length) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "v8::ArrayBuffer::New(size_t)");
ENTER_V8(i_isolate);
i::Handle<i::JSArrayBuffer> obj =
i_isolate->factory()->NewJSArrayBuffer(i::SharedFlag::kNotShared);
i::JSArrayBuffer::SetupAllocatingData(obj, i_isolate, byte_length);
return Utils::ToLocal(obj);
}
Local<ArrayBuffer> v8::ArrayBuffer::New(Isolate* isolate, void* data,
size_t byte_length,
ArrayBufferCreationMode mode) {
// Embedders must guarantee that the external backing store is valid.
CHECK(byte_length == 0 || data != NULL);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "v8::ArrayBuffer::New(void*, size_t)");
ENTER_V8(i_isolate);
i::Handle<i::JSArrayBuffer> obj =
i_isolate->factory()->NewJSArrayBuffer(i::SharedFlag::kNotShared);
i::JSArrayBuffer::Setup(obj, i_isolate,
mode == ArrayBufferCreationMode::kExternalized, data,
byte_length);
return Utils::ToLocal(obj);
}
Local<ArrayBuffer> v8::ArrayBufferView::Buffer() {
i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this);
i::Handle<i::JSArrayBuffer> buffer;
if (obj->IsJSDataView()) {
i::Handle<i::JSDataView> data_view(i::JSDataView::cast(*obj));
DCHECK(data_view->buffer()->IsJSArrayBuffer());
buffer = i::handle(i::JSArrayBuffer::cast(data_view->buffer()));
} else {
DCHECK(obj->IsJSTypedArray());
buffer = i::JSTypedArray::cast(*obj)->GetBuffer();
}
return Utils::ToLocal(buffer);
}
size_t v8::ArrayBufferView::CopyContents(void* dest, size_t byte_length) {
i::Handle<i::JSArrayBufferView> self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
size_t byte_offset = i::NumberToSize(isolate, self->byte_offset());
size_t bytes_to_copy =
i::Min(byte_length, i::NumberToSize(isolate, self->byte_length()));
if (bytes_to_copy) {
i::DisallowHeapAllocation no_gc;
i::Handle<i::JSArrayBuffer> buffer(i::JSArrayBuffer::cast(self->buffer()));
const char* source = reinterpret_cast<char*>(buffer->backing_store());
if (source == nullptr) {
DCHECK(self->IsJSTypedArray());
i::Handle<i::JSTypedArray> typed_array(i::JSTypedArray::cast(*self));
i::Handle<i::FixedTypedArrayBase> fixed_array(
i::FixedTypedArrayBase::cast(typed_array->elements()));
source = reinterpret_cast<char*>(fixed_array->DataPtr());
}
memcpy(dest, source + byte_offset, bytes_to_copy);
}
return bytes_to_copy;
}
bool v8::ArrayBufferView::HasBuffer() const {
i::Handle<i::JSArrayBufferView> self = Utils::OpenHandle(this);
i::Handle<i::JSArrayBuffer> buffer(i::JSArrayBuffer::cast(self->buffer()));
return buffer->backing_store() != nullptr;
}
size_t v8::ArrayBufferView::ByteOffset() {
i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this);
return static_cast<size_t>(obj->byte_offset()->Number());
}
size_t v8::ArrayBufferView::ByteLength() {
i::Handle<i::JSArrayBufferView> obj = Utils::OpenHandle(this);
return static_cast<size_t>(obj->byte_length()->Number());
}
size_t v8::TypedArray::Length() {
i::Handle<i::JSTypedArray> obj = Utils::OpenHandle(this);
return static_cast<size_t>(obj->length_value());
}
#define TYPED_ARRAY_NEW(Type, type, TYPE, ctype, size) \
Local<Type##Array> Type##Array::New(Local<ArrayBuffer> array_buffer, \
size_t byte_offset, size_t length) { \
i::Isolate* isolate = Utils::OpenHandle(*array_buffer)->GetIsolate(); \
LOG_API(isolate, \
"v8::" #Type "Array::New(Local<ArrayBuffer>, size_t, size_t)"); \
ENTER_V8(isolate); \
if (!Utils::ApiCheck(length <= static_cast<size_t>(i::Smi::kMaxValue), \
"v8::" #Type \
"Array::New(Local<ArrayBuffer>, size_t, size_t)", \
"length exceeds max allowed value")) { \
return Local<Type##Array>(); \
} \
i::Handle<i::JSArrayBuffer> buffer = Utils::OpenHandle(*array_buffer); \
i::Handle<i::JSTypedArray> obj = isolate->factory()->NewJSTypedArray( \
i::kExternal##Type##Array, buffer, byte_offset, length); \
return Utils::ToLocal##Type##Array(obj); \
} \
Local<Type##Array> Type##Array::New( \
Local<SharedArrayBuffer> shared_array_buffer, size_t byte_offset, \
size_t length) { \
CHECK(i::FLAG_harmony_sharedarraybuffer); \
i::Isolate* isolate = \
Utils::OpenHandle(*shared_array_buffer)->GetIsolate(); \
LOG_API(isolate, "v8::" #Type \
"Array::New(Local<SharedArrayBuffer>, size_t, size_t)"); \
ENTER_V8(isolate); \
if (!Utils::ApiCheck( \
length <= static_cast<size_t>(i::Smi::kMaxValue), \
"v8::" #Type \
"Array::New(Local<SharedArrayBuffer>, size_t, size_t)", \
"length exceeds max allowed value")) { \
return Local<Type##Array>(); \
} \
i::Handle<i::JSArrayBuffer> buffer = \
Utils::OpenHandle(*shared_array_buffer); \
i::Handle<i::JSTypedArray> obj = isolate->factory()->NewJSTypedArray( \
i::kExternal##Type##Array, buffer, byte_offset, length); \
return Utils::ToLocal##Type##Array(obj); \
}
TYPED_ARRAYS(TYPED_ARRAY_NEW)
#undef TYPED_ARRAY_NEW
Local<DataView> DataView::New(Local<ArrayBuffer> array_buffer,
size_t byte_offset, size_t byte_length) {
i::Handle<i::JSArrayBuffer> buffer = Utils::OpenHandle(*array_buffer);
i::Isolate* isolate = buffer->GetIsolate();
LOG_API(isolate, "v8::DataView::New(Local<ArrayBuffer>, size_t, size_t)");
ENTER_V8(isolate);
i::Handle<i::JSDataView> obj =
isolate->factory()->NewJSDataView(buffer, byte_offset, byte_length);
return Utils::ToLocal(obj);
}
Local<DataView> DataView::New(Local<SharedArrayBuffer> shared_array_buffer,
size_t byte_offset, size_t byte_length) {
CHECK(i::FLAG_harmony_sharedarraybuffer);
i::Handle<i::JSArrayBuffer> buffer = Utils::OpenHandle(*shared_array_buffer);
i::Isolate* isolate = buffer->GetIsolate();
LOG_API(isolate,
"v8::DataView::New(Local<SharedArrayBuffer>, size_t, size_t)");
ENTER_V8(isolate);
i::Handle<i::JSDataView> obj =
isolate->factory()->NewJSDataView(buffer, byte_offset, byte_length);
return Utils::ToLocal(obj);
}
bool v8::SharedArrayBuffer::IsExternal() const {
return Utils::OpenHandle(this)->is_external();
}
v8::SharedArrayBuffer::Contents v8::SharedArrayBuffer::Externalize() {
i::Handle<i::JSArrayBuffer> self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
Utils::ApiCheck(!self->is_external(), "v8::SharedArrayBuffer::Externalize",
"SharedArrayBuffer already externalized");
self->set_is_external(true);
isolate->heap()->UnregisterArrayBuffer(isolate->heap()->InNewSpace(*self),
self->backing_store());
return GetContents();
}
v8::SharedArrayBuffer::Contents v8::SharedArrayBuffer::GetContents() {
i::Handle<i::JSArrayBuffer> self = Utils::OpenHandle(this);
size_t byte_length = static_cast<size_t>(self->byte_length()->Number());
Contents contents;
contents.data_ = self->backing_store();
contents.byte_length_ = byte_length;
return contents;
}
size_t v8::SharedArrayBuffer::ByteLength() const {
i::Handle<i::JSArrayBuffer> obj = Utils::OpenHandle(this);
return static_cast<size_t>(obj->byte_length()->Number());
}
Local<SharedArrayBuffer> v8::SharedArrayBuffer::New(Isolate* isolate,
size_t byte_length) {
CHECK(i::FLAG_harmony_sharedarraybuffer);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "v8::SharedArrayBuffer::New(size_t)");
ENTER_V8(i_isolate);
i::Handle<i::JSArrayBuffer> obj =
i_isolate->factory()->NewJSArrayBuffer(i::SharedFlag::kShared);
i::JSArrayBuffer::SetupAllocatingData(obj, i_isolate, byte_length, true,
i::SharedFlag::kShared);
return Utils::ToLocalShared(obj);
}
Local<SharedArrayBuffer> v8::SharedArrayBuffer::New(
Isolate* isolate, void* data, size_t byte_length,
ArrayBufferCreationMode mode) {
CHECK(i::FLAG_harmony_sharedarraybuffer);
// Embedders must guarantee that the external backing store is valid.
CHECK(byte_length == 0 || data != NULL);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "v8::SharedArrayBuffer::New(void*, size_t)");
ENTER_V8(i_isolate);
i::Handle<i::JSArrayBuffer> obj =
i_isolate->factory()->NewJSArrayBuffer(i::SharedFlag::kShared);
i::JSArrayBuffer::Setup(obj, i_isolate,
mode == ArrayBufferCreationMode::kExternalized, data,
byte_length, i::SharedFlag::kShared);
return Utils::ToLocalShared(obj);
}
Local<Symbol> v8::Symbol::New(Isolate* isolate, Local<String> name) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, "Symbol::New()");
ENTER_V8(i_isolate);
i::Handle<i::Symbol> result = i_isolate->factory()->NewSymbol();
if (!name.IsEmpty()) result->set_name(*Utils::OpenHandle(*name));
return Utils::ToLocal(result);
}
static i::Handle<i::Symbol> SymbolFor(i::Isolate* isolate,
i::Handle<i::String> name,
i::Handle<i::String> part) {
i::Handle<i::JSObject> registry = isolate->GetSymbolRegistry();
i::Handle<i::JSObject> symbols =
i::Handle<i::JSObject>::cast(
i::Object::GetPropertyOrElement(registry, part).ToHandleChecked());
i::Handle<i::Object> symbol =
i::Object::GetPropertyOrElement(symbols, name).ToHandleChecked();
if (!symbol->IsSymbol()) {
DCHECK(symbol->IsUndefined());
symbol = isolate->factory()->NewSymbol();
i::Handle<i::Symbol>::cast(symbol)->set_name(*name);
i::JSObject::SetProperty(symbols, name, symbol, i::STRICT).Assert();
}
return i::Handle<i::Symbol>::cast(symbol);
}
Local<Symbol> v8::Symbol::For(Isolate* isolate, Local<String> name) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::Handle<i::String> i_name = Utils::OpenHandle(*name);
i::Handle<i::String> part = i_isolate->factory()->for_string();
return Utils::ToLocal(SymbolFor(i_isolate, i_name, part));
}
Local<Symbol> v8::Symbol::ForApi(Isolate* isolate, Local<String> name) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::Handle<i::String> i_name = Utils::OpenHandle(*name);
i::Handle<i::String> part = i_isolate->factory()->for_api_string();
return Utils::ToLocal(SymbolFor(i_isolate, i_name, part));
}
Local<Symbol> v8::Symbol::GetIterator(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
return Utils::ToLocal(i_isolate->factory()->iterator_symbol());
}
Local<Symbol> v8::Symbol::GetUnscopables(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
return Utils::ToLocal(i_isolate->factory()->unscopables_symbol());
}
Local<Symbol> v8::Symbol::GetToStringTag(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
return Utils::ToLocal(i_isolate->factory()->to_string_tag_symbol());
}
Local<Number> v8::Number::New(Isolate* isolate, double value) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
if (std::isnan(value)) {
// Introduce only canonical NaN value into the VM, to avoid signaling NaNs.
value = std::numeric_limits<double>::quiet_NaN();
}
ENTER_V8(internal_isolate);
i::Handle<i::Object> result = internal_isolate->factory()->NewNumber(value);
return Utils::NumberToLocal(result);
}
Local<Integer> v8::Integer::New(Isolate* isolate, int32_t value) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
if (i::Smi::IsValid(value)) {
return Utils::IntegerToLocal(i::Handle<i::Object>(i::Smi::FromInt(value),
internal_isolate));
}
ENTER_V8(internal_isolate);
i::Handle<i::Object> result = internal_isolate->factory()->NewNumber(value);
return Utils::IntegerToLocal(result);
}
Local<Integer> v8::Integer::NewFromUnsigned(Isolate* isolate, uint32_t value) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
bool fits_into_int32_t = (value & (1 << 31)) == 0;
if (fits_into_int32_t) {
return Integer::New(isolate, static_cast<int32_t>(value));
}
ENTER_V8(internal_isolate);
i::Handle<i::Object> result = internal_isolate->factory()->NewNumber(value);
return Utils::IntegerToLocal(result);
}
void Isolate::CollectAllGarbage(const char* gc_reason) {
i::Heap* heap = reinterpret_cast<i::Isolate*>(this)->heap();
if (heap->incremental_marking()->IsStopped()) {
if (heap->incremental_marking()->CanBeActivated()) {
heap->StartIncrementalMarking(
i::Heap::kNoGCFlags,
kGCCallbackFlagSynchronousPhantomCallbackProcessing, gc_reason);
} else {
heap->CollectAllGarbage(
i::Heap::kNoGCFlags, gc_reason,
kGCCallbackFlagSynchronousPhantomCallbackProcessing);
}
} else {
// Incremental marking is turned on an has already been started.
// TODO(mlippautz): Compute the time slice for incremental marking based on
// memory pressure.
double deadline = heap->MonotonicallyIncreasingTimeInMs() +
i::FLAG_external_allocation_limit_incremental_time;
heap->AdvanceIncrementalMarking(
0, deadline, i::IncrementalMarking::StepActions(
i::IncrementalMarking::GC_VIA_STACK_GUARD,
i::IncrementalMarking::FORCE_MARKING,
i::IncrementalMarking::FORCE_COMPLETION));
}
}
HeapProfiler* Isolate::GetHeapProfiler() {
i::HeapProfiler* heap_profiler =
reinterpret_cast<i::Isolate*>(this)->heap_profiler();
return reinterpret_cast<HeapProfiler*>(heap_profiler);
}
CpuProfiler* Isolate::GetCpuProfiler() {
i::CpuProfiler* cpu_profiler =
reinterpret_cast<i::Isolate*>(this)->cpu_profiler();
return reinterpret_cast<CpuProfiler*>(cpu_profiler);
}
bool Isolate::InContext() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->context() != NULL;
}
v8::Local<v8::Context> Isolate::GetCurrentContext() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Context* context = isolate->context();
if (context == NULL) return Local<Context>();
i::Context* native_context = context->native_context();
if (native_context == NULL) return Local<Context>();
return Utils::ToLocal(i::Handle<i::Context>(native_context));
}
v8::Local<v8::Context> Isolate::GetCallingContext() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Handle<i::Object> calling = isolate->GetCallingNativeContext();
if (calling.is_null()) return Local<Context>();
return Utils::ToLocal(i::Handle<i::Context>::cast(calling));
}
v8::Local<v8::Context> Isolate::GetEnteredContext() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Handle<i::Object> last =
isolate->handle_scope_implementer()->LastEnteredContext();
if (last.is_null()) return Local<Context>();
return Utils::ToLocal(i::Handle<i::Context>::cast(last));
}
v8::Local<Value> Isolate::ThrowException(v8::Local<v8::Value> value) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
ENTER_V8(isolate);
// If we're passed an empty handle, we throw an undefined exception
// to deal more gracefully with out of memory situations.
if (value.IsEmpty()) {
isolate->ScheduleThrow(isolate->heap()->undefined_value());
} else {
isolate->ScheduleThrow(*Utils::OpenHandle(*value));
}
return v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
void Isolate::SetObjectGroupId(internal::Object** object, UniqueId id) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
internal_isolate->global_handles()->SetObjectGroupId(
v8::internal::Handle<v8::internal::Object>(object).location(),
id);
}
void Isolate::SetReferenceFromGroup(UniqueId id, internal::Object** object) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
internal_isolate->global_handles()->SetReferenceFromGroup(
id,
v8::internal::Handle<v8::internal::Object>(object).location());
}
void Isolate::SetReference(internal::Object** parent,
internal::Object** child) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
i::Object** parent_location =
v8::internal::Handle<v8::internal::Object>(parent).location();
internal_isolate->global_handles()->SetReference(
reinterpret_cast<i::HeapObject**>(parent_location),
v8::internal::Handle<v8::internal::Object>(child).location());
}
void Isolate::AddGCPrologueCallback(GCCallback callback, GCType gc_type) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->AddGCPrologueCallback(callback, gc_type);
}
void Isolate::RemoveGCPrologueCallback(GCCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->RemoveGCPrologueCallback(callback);
}
void Isolate::AddGCEpilogueCallback(GCCallback callback, GCType gc_type) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->AddGCEpilogueCallback(callback, gc_type);
}
void Isolate::RemoveGCEpilogueCallback(GCCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->RemoveGCEpilogueCallback(callback);
}
void V8::AddGCPrologueCallback(GCCallback callback, GCType gc_type) {
i::Isolate* isolate = i::Isolate::Current();
isolate->heap()->AddGCPrologueCallback(
reinterpret_cast<v8::Isolate::GCCallback>(callback), gc_type, false);
}
void V8::AddGCEpilogueCallback(GCCallback callback, GCType gc_type) {
i::Isolate* isolate = i::Isolate::Current();
isolate->heap()->AddGCEpilogueCallback(
reinterpret_cast<v8::Isolate::GCCallback>(callback), gc_type, false);
}
void Isolate::AddMemoryAllocationCallback(MemoryAllocationCallback callback,
ObjectSpace space,
AllocationAction action) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->memory_allocator()->AddMemoryAllocationCallback(
callback, space, action);
}
void Isolate::RemoveMemoryAllocationCallback(
MemoryAllocationCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->memory_allocator()->RemoveMemoryAllocationCallback(
callback);
}
void Isolate::TerminateExecution() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->stack_guard()->RequestTerminateExecution();
}
bool Isolate::IsExecutionTerminating() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return IsExecutionTerminatingCheck(isolate);
}
void Isolate::CancelTerminateExecution() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->stack_guard()->ClearTerminateExecution();
isolate->CancelTerminateExecution();
}
void Isolate::RequestInterrupt(InterruptCallback callback, void* data) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->RequestInterrupt(callback, data);
}
void Isolate::RequestGarbageCollectionForTesting(GarbageCollectionType type) {
CHECK(i::FLAG_expose_gc);
if (type == kMinorGarbageCollection) {
reinterpret_cast<i::Isolate*>(this)->heap()->CollectGarbage(
i::NEW_SPACE, "Isolate::RequestGarbageCollection",
kGCCallbackFlagForced);
} else {
DCHECK_EQ(kFullGarbageCollection, type);
reinterpret_cast<i::Isolate*>(this)->heap()->CollectAllGarbage(
i::Heap::kAbortIncrementalMarkingMask,
"Isolate::RequestGarbageCollection", kGCCallbackFlagForced);
}
}
Isolate* Isolate::GetCurrent() {
i::Isolate* isolate = i::Isolate::Current();
return reinterpret_cast<Isolate*>(isolate);
}
Isolate* Isolate::New(const Isolate::CreateParams& params) {
i::Isolate* isolate = new i::Isolate(false);
Isolate* v8_isolate = reinterpret_cast<Isolate*>(isolate);
CHECK(params.array_buffer_allocator != NULL);
isolate->set_array_buffer_allocator(params.array_buffer_allocator);
if (params.snapshot_blob != NULL) {
isolate->set_snapshot_blob(params.snapshot_blob);
} else {
isolate->set_snapshot_blob(i::Snapshot::DefaultSnapshotBlob());
}
if (params.entry_hook) {
isolate->set_function_entry_hook(params.entry_hook);
}
if (params.code_event_handler) {
isolate->InitializeLoggingAndCounters();
isolate->logger()->SetCodeEventHandler(kJitCodeEventDefault,
params.code_event_handler);
}
if (params.counter_lookup_callback) {
v8_isolate->SetCounterFunction(params.counter_lookup_callback);
}
if (params.create_histogram_callback) {
v8_isolate->SetCreateHistogramFunction(params.create_histogram_callback);
}
if (params.add_histogram_sample_callback) {
v8_isolate->SetAddHistogramSampleFunction(
params.add_histogram_sample_callback);
}
SetResourceConstraints(isolate, params.constraints);
// TODO(jochen): Once we got rid of Isolate::Current(), we can remove this.
Isolate::Scope isolate_scope(v8_isolate);
if (params.entry_hook || !i::Snapshot::Initialize(isolate)) {
// If the isolate has a function entry hook, it needs to re-build all its
// code stubs with entry hooks embedded, so don't deserialize a snapshot.
if (i::Snapshot::EmbedsScript(isolate)) {
// If the snapshot embeds a script, we cannot initialize the isolate
// without the snapshot as a fallback. This is unlikely to happen though.
V8_Fatal(__FILE__, __LINE__,
"Initializing isolate from custom startup snapshot failed");
}
isolate->Init(NULL);
}
return v8_isolate;
}
void Isolate::Dispose() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
if (!Utils::ApiCheck(!isolate->IsInUse(),
"v8::Isolate::Dispose()",
"Disposing the isolate that is entered by a thread.")) {
return;
}
isolate->TearDown();
}
void Isolate::Enter() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->Enter();
}
void Isolate::Exit() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->Exit();
}
Isolate::DisallowJavascriptExecutionScope::DisallowJavascriptExecutionScope(
Isolate* isolate,
Isolate::DisallowJavascriptExecutionScope::OnFailure on_failure)
: on_failure_(on_failure) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
if (on_failure_ == CRASH_ON_FAILURE) {
internal_ = reinterpret_cast<void*>(
new i::DisallowJavascriptExecution(i_isolate));
} else {
DCHECK_EQ(THROW_ON_FAILURE, on_failure);
internal_ = reinterpret_cast<void*>(
new i::ThrowOnJavascriptExecution(i_isolate));
}
}
Isolate::DisallowJavascriptExecutionScope::~DisallowJavascriptExecutionScope() {
if (on_failure_ == CRASH_ON_FAILURE) {
delete reinterpret_cast<i::DisallowJavascriptExecution*>(internal_);
} else {
delete reinterpret_cast<i::ThrowOnJavascriptExecution*>(internal_);
}
}
Isolate::AllowJavascriptExecutionScope::AllowJavascriptExecutionScope(
Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
internal_assert_ = reinterpret_cast<void*>(
new i::AllowJavascriptExecution(i_isolate));
internal_throws_ = reinterpret_cast<void*>(
new i::NoThrowOnJavascriptExecution(i_isolate));
}
Isolate::AllowJavascriptExecutionScope::~AllowJavascriptExecutionScope() {
delete reinterpret_cast<i::AllowJavascriptExecution*>(internal_assert_);
delete reinterpret_cast<i::NoThrowOnJavascriptExecution*>(internal_throws_);
}
Isolate::SuppressMicrotaskExecutionScope::SuppressMicrotaskExecutionScope(
Isolate* isolate)
: isolate_(reinterpret_cast<i::Isolate*>(isolate)) {
isolate_->handle_scope_implementer()->IncrementCallDepth();
}
Isolate::SuppressMicrotaskExecutionScope::~SuppressMicrotaskExecutionScope() {
isolate_->handle_scope_implementer()->DecrementCallDepth();
}
void Isolate::GetHeapStatistics(HeapStatistics* heap_statistics) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Heap* heap = isolate->heap();
heap_statistics->total_heap_size_ = heap->CommittedMemory();
heap_statistics->total_heap_size_executable_ =
heap->CommittedMemoryExecutable();
heap_statistics->total_physical_size_ = heap->CommittedPhysicalMemory();
heap_statistics->total_available_size_ = heap->Available();
heap_statistics->used_heap_size_ = heap->SizeOfObjects();
heap_statistics->heap_size_limit_ = heap->MaxReserved();
}
size_t Isolate::NumberOfHeapSpaces() {
return i::LAST_SPACE - i::FIRST_SPACE + 1;
}
bool Isolate::GetHeapSpaceStatistics(HeapSpaceStatistics* space_statistics,
size_t index) {
if (!space_statistics) return false;
if (!i::Heap::IsValidAllocationSpace(static_cast<i::AllocationSpace>(index)))
return false;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Heap* heap = isolate->heap();
i::Space* space = heap->space(static_cast<int>(index));
space_statistics->space_name_ = heap->GetSpaceName(static_cast<int>(index));
space_statistics->space_size_ = space->CommittedMemory();
space_statistics->space_used_size_ = space->SizeOfObjects();
space_statistics->space_available_size_ = space->Available();
space_statistics->physical_space_size_ = space->CommittedPhysicalMemory();
return true;
}
size_t Isolate::NumberOfTrackedHeapObjectTypes() {
return i::Heap::OBJECT_STATS_COUNT;
}
bool Isolate::GetHeapObjectStatisticsAtLastGC(
HeapObjectStatistics* object_statistics, size_t type_index) {
if (!object_statistics) return false;
if (type_index >= i::Heap::OBJECT_STATS_COUNT) return false;
if (!i::FLAG_track_gc_object_stats) return false;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Heap* heap = isolate->heap();
const char* object_type;
const char* object_sub_type;
size_t object_count = heap->object_count_last_gc(type_index);
size_t object_size = heap->object_size_last_gc(type_index);
if (!heap->GetObjectTypeName(type_index, &object_type, &object_sub_type)) {
// There should be no objects counted when the type is unknown.
DCHECK_EQ(object_count, 0U);
DCHECK_EQ(object_size, 0U);
return false;
}
object_statistics->object_type_ = object_type;
object_statistics->object_sub_type_ = object_sub_type;
object_statistics->object_count_ = object_count;
object_statistics->object_size_ = object_size;
return true;
}
void Isolate::GetStackSample(const RegisterState& state, void** frames,
size_t frames_limit, SampleInfo* sample_info) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::TickSample::GetStackSample(isolate, state, i::TickSample::kSkipCEntryFrame,
frames, frames_limit, sample_info);
}
void Isolate::SetEventLogger(LogEventCallback that) {
// Do not overwrite the event logger if we want to log explicitly.
if (i::FLAG_log_internal_timer_events) return;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->set_event_logger(that);
}
void Isolate::AddCallCompletedCallback(CallCompletedCallback callback) {
if (callback == NULL) return;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->AddCallCompletedCallback(callback);
}
void Isolate::RemoveCallCompletedCallback(CallCompletedCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->RemoveCallCompletedCallback(callback);
}
void Isolate::SetPromiseRejectCallback(PromiseRejectCallback callback) {
if (callback == NULL) return;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->SetPromiseRejectCallback(callback);
}
void Isolate::RunMicrotasks() {
reinterpret_cast<i::Isolate*>(this)->RunMicrotasks();
}
void Isolate::EnqueueMicrotask(Local<Function> microtask) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->EnqueueMicrotask(Utils::OpenHandle(*microtask));
}
void Isolate::EnqueueMicrotask(MicrotaskCallback microtask, void* data) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::HandleScope scope(isolate);
i::Handle<i::CallHandlerInfo> callback_info =
i::Handle<i::CallHandlerInfo>::cast(
isolate->factory()->NewStruct(i::CALL_HANDLER_INFO_TYPE));
SET_FIELD_WRAPPED(callback_info, set_callback, microtask);
SET_FIELD_WRAPPED(callback_info, set_data, data);
isolate->EnqueueMicrotask(callback_info);
}
void Isolate::SetAutorunMicrotasks(bool autorun) {
reinterpret_cast<i::Isolate*>(this)->set_autorun_microtasks(autorun);
}
bool Isolate::WillAutorunMicrotasks() const {
return reinterpret_cast<const i::Isolate*>(this)->autorun_microtasks();
}
void Isolate::SetUseCounterCallback(UseCounterCallback callback) {
reinterpret_cast<i::Isolate*>(this)->SetUseCounterCallback(callback);
}
void Isolate::SetCounterFunction(CounterLookupCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->stats_table()->SetCounterFunction(callback);
isolate->InitializeLoggingAndCounters();
isolate->counters()->ResetCounters();
}
void Isolate::SetCreateHistogramFunction(CreateHistogramCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->stats_table()->SetCreateHistogramFunction(callback);
isolate->InitializeLoggingAndCounters();
isolate->counters()->ResetHistograms();
}
void Isolate::SetAddHistogramSampleFunction(
AddHistogramSampleCallback callback) {
reinterpret_cast<i::Isolate*>(this)
->stats_table()
->SetAddHistogramSampleFunction(callback);
}
bool Isolate::IdleNotification(int idle_time_in_ms) {
// Returning true tells the caller that it need not
// continue to call IdleNotification.
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
if (!i::FLAG_use_idle_notification) return true;
return isolate->heap()->IdleNotification(idle_time_in_ms);
}
bool Isolate::IdleNotificationDeadline(double deadline_in_seconds) {
// Returning true tells the caller that it need not
// continue to call IdleNotification.
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
if (!i::FLAG_use_idle_notification) return true;
return isolate->heap()->IdleNotification(deadline_in_seconds);
}
void Isolate::LowMemoryNotification() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
{
i::HistogramTimerScope idle_notification_scope(
isolate->counters()->gc_low_memory_notification());
isolate->heap()->CollectAllAvailableGarbage("low memory notification");
}
}
int Isolate::ContextDisposedNotification(bool dependant_context) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->heap()->NotifyContextDisposed(dependant_context);
}
void Isolate::SetJitCodeEventHandler(JitCodeEventOptions options,
JitCodeEventHandler event_handler) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
// Ensure that logging is initialized for our isolate.
isolate->InitializeLoggingAndCounters();
isolate->logger()->SetCodeEventHandler(options, event_handler);
}
void Isolate::SetStackLimit(uintptr_t stack_limit) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
CHECK(stack_limit);
isolate->stack_guard()->SetStackLimit(stack_limit);
}
void Isolate::GetCodeRange(void** start, size_t* length_in_bytes) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
if (isolate->code_range()->valid()) {
*start = isolate->code_range()->start();
*length_in_bytes = isolate->code_range()->size();
} else {
*start = NULL;
*length_in_bytes = 0;
}
}
void Isolate::SetFatalErrorHandler(FatalErrorCallback that) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->set_exception_behavior(that);
}
void Isolate::SetAllowCodeGenerationFromStringsCallback(
AllowCodeGenerationFromStringsCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->set_allow_code_gen_callback(callback);
}
bool Isolate::IsDead() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->IsDead();
}
bool Isolate::AddMessageListener(MessageCallback that, Local<Value> data) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
ENTER_V8(isolate);
i::HandleScope scope(isolate);
NeanderArray listeners(isolate->factory()->message_listeners());
NeanderObject obj(isolate, 2);
obj.set(0, *isolate->factory()->NewForeign(FUNCTION_ADDR(that)));
obj.set(1, data.IsEmpty() ? isolate->heap()->undefined_value()
: *Utils::OpenHandle(*data));
listeners.add(isolate, obj.value());
return true;
}
void Isolate::RemoveMessageListeners(MessageCallback that) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
ENTER_V8(isolate);
i::HandleScope scope(isolate);
NeanderArray listeners(isolate->factory()->message_listeners());
for (int i = 0; i < listeners.length(); i++) {
if (listeners.get(i)->IsUndefined()) continue; // skip deleted ones
NeanderObject listener(i::JSObject::cast(listeners.get(i)));
i::Handle<i::Foreign> callback_obj(i::Foreign::cast(listener.get(0)));
if (callback_obj->foreign_address() == FUNCTION_ADDR(that)) {
listeners.set(i, isolate->heap()->undefined_value());
}
}
}
void Isolate::SetFailedAccessCheckCallbackFunction(
FailedAccessCheckCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->SetFailedAccessCheckCallback(callback);
}
void Isolate::SetCaptureStackTraceForUncaughtExceptions(
bool capture, int frame_limit, StackTrace::StackTraceOptions options) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->SetCaptureStackTraceForUncaughtExceptions(capture, frame_limit,
options);
}
void Isolate::VisitExternalResources(ExternalResourceVisitor* visitor) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->VisitExternalResources(visitor);
}
class VisitorAdapter : public i::ObjectVisitor {
public:
explicit VisitorAdapter(PersistentHandleVisitor* visitor)
: visitor_(visitor) {}
virtual void VisitPointers(i::Object** start, i::Object** end) {
UNREACHABLE();
}
virtual void VisitEmbedderReference(i::Object** p, uint16_t class_id) {
Value* value = ToApi<Value>(i::Handle<i::Object>(p));
visitor_->VisitPersistentHandle(
reinterpret_cast<Persistent<Value>*>(&value), class_id);
}
private:
PersistentHandleVisitor* visitor_;
};
void Isolate::VisitHandlesWithClassIds(PersistentHandleVisitor* visitor) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::DisallowHeapAllocation no_allocation;
VisitorAdapter visitor_adapter(visitor);
isolate->global_handles()->IterateAllRootsWithClassIds(&visitor_adapter);
}
void Isolate::VisitHandlesForPartialDependence(
PersistentHandleVisitor* visitor) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::DisallowHeapAllocation no_allocation;
VisitorAdapter visitor_adapter(visitor);
isolate->global_handles()->IterateAllRootsInNewSpaceWithClassIds(
&visitor_adapter);
}
String::Utf8Value::Utf8Value(v8::Local<v8::Value> obj)
: str_(NULL), length_(0) {
if (obj.IsEmpty()) return;
i::Isolate* isolate = i::Isolate::Current();
Isolate* v8_isolate = reinterpret_cast<Isolate*>(isolate);
ENTER_V8(isolate);
i::HandleScope scope(isolate);
Local<Context> context = v8_isolate->GetCurrentContext();
TryCatch try_catch(v8_isolate);
Local<String> str;
if (!obj->ToString(context).ToLocal(&str)) return;
i::Handle<i::String> i_str = Utils::OpenHandle(*str);
length_ = v8::Utf8Length(*i_str, isolate);
str_ = i::NewArray<char>(length_ + 1);
str->WriteUtf8(str_);
}
String::Utf8Value::~Utf8Value() {
i::DeleteArray(str_);
}
String::Value::Value(v8::Local<v8::Value> obj) : str_(NULL), length_(0) {
if (obj.IsEmpty()) return;
i::Isolate* isolate = i::Isolate::Current();
Isolate* v8_isolate = reinterpret_cast<Isolate*>(isolate);
ENTER_V8(isolate);
i::HandleScope scope(isolate);
Local<Context> context = v8_isolate->GetCurrentContext();
TryCatch try_catch(v8_isolate);
Local<String> str;
if (!obj->ToString(context).ToLocal(&str)) return;
length_ = str->Length();
str_ = i::NewArray<uint16_t>(length_ + 1);
str->Write(str_);
}
String::Value::~Value() {
i::DeleteArray(str_);
}
#define DEFINE_ERROR(NAME, name) \
Local<Value> Exception::NAME(v8::Local<v8::String> raw_message) { \
i::Isolate* isolate = i::Isolate::Current(); \
LOG_API(isolate, #NAME); \
ENTER_V8(isolate); \
i::Object* error; \
{ \
i::HandleScope scope(isolate); \
i::Handle<i::String> message = Utils::OpenHandle(*raw_message); \
i::Handle<i::JSFunction> constructor = isolate->name##_function(); \
error = *isolate->factory()->NewError(constructor, message); \
} \
i::Handle<i::Object> result(error, isolate); \
return Utils::ToLocal(result); \
}
DEFINE_ERROR(RangeError, range_error)
DEFINE_ERROR(ReferenceError, reference_error)
DEFINE_ERROR(SyntaxError, syntax_error)
DEFINE_ERROR(TypeError, type_error)
DEFINE_ERROR(Error, error)
#undef DEFINE_ERROR
Local<Message> Exception::CreateMessage(Local<Value> exception) {
i::Handle<i::Object> obj = Utils::OpenHandle(*exception);
if (!obj->IsHeapObject()) return Local<Message>();
i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
return Utils::MessageToLocal(
scope.CloseAndEscape(isolate->CreateMessage(obj, NULL)));
}
Local<StackTrace> Exception::GetStackTrace(Local<Value> exception) {
i::Handle<i::Object> obj = Utils::OpenHandle(*exception);
if (!obj->IsJSObject()) return Local<StackTrace>();
i::Handle<i::JSObject> js_obj = i::Handle<i::JSObject>::cast(obj);
i::Isolate* isolate = js_obj->GetIsolate();
ENTER_V8(isolate);
return Utils::StackTraceToLocal(isolate->GetDetailedStackTrace(js_obj));
}
// --- D e b u g S u p p o r t ---
bool Debug::SetDebugEventListener(EventCallback that, Local<Value> data) {
i::Isolate* isolate = i::Isolate::Current();
ENTER_V8(isolate);
i::HandleScope scope(isolate);
i::Handle<i::Object> foreign = isolate->factory()->undefined_value();
if (that != NULL) {
foreign = isolate->factory()->NewForeign(FUNCTION_ADDR(that));
}
isolate->debug()->SetEventListener(foreign,
Utils::OpenHandle(*data, true));
return true;
}
void Debug::DebugBreak(Isolate* isolate) {
reinterpret_cast<i::Isolate*>(isolate)->stack_guard()->RequestDebugBreak();
}
void Debug::CancelDebugBreak(Isolate* isolate) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
internal_isolate->stack_guard()->ClearDebugBreak();
}
bool Debug::CheckDebugBreak(Isolate* isolate) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
return internal_isolate->stack_guard()->CheckDebugBreak();
}
void Debug::SetMessageHandler(v8::Debug::MessageHandler handler) {
i::Isolate* isolate = i::Isolate::Current();
ENTER_V8(isolate);
isolate->debug()->SetMessageHandler(handler);
}
void Debug::SendCommand(Isolate* isolate,
const uint16_t* command,
int length,
ClientData* client_data) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
internal_isolate->debug()->EnqueueCommandMessage(
i::Vector<const uint16_t>(command, length), client_data);
}
MaybeLocal<Value> Debug::Call(Local<Context> context,
v8::Local<v8::Function> fun,
v8::Local<v8::Value> data) {
PREPARE_FOR_EXECUTION(context, "v8::Debug::Call()", Value);
i::Handle<i::Object> data_obj;
if (data.IsEmpty()) {
data_obj = isolate->factory()->undefined_value();
} else {
data_obj = Utils::OpenHandle(*data);
}
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(isolate->debug()->Call(Utils::OpenHandle(*fun), data_obj),
&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
Local<Value> Debug::Call(v8::Local<v8::Function> fun,
v8::Local<v8::Value> data) {
auto context = ContextFromHeapObject(Utils::OpenHandle(*fun));
RETURN_TO_LOCAL_UNCHECKED(Call(context, fun, data), Value);
}
MaybeLocal<Value> Debug::GetMirror(Local<Context> context,
v8::Local<v8::Value> obj) {
PREPARE_FOR_EXECUTION(context, "v8::Debug::GetMirror()", Value);
i::Debug* isolate_debug = isolate->debug();
has_pending_exception = !isolate_debug->Load();
RETURN_ON_FAILED_EXECUTION(Value);
i::Handle<i::JSObject> debug(isolate_debug->debug_context()->global_object());
auto name = isolate->factory()->NewStringFromStaticChars("MakeMirror");
auto fun_obj = i::Object::GetProperty(debug, name).ToHandleChecked();
auto v8_fun = Utils::ToLocal(i::Handle<i::JSFunction>::cast(fun_obj));
const int kArgc = 1;
v8::Local<v8::Value> argv[kArgc] = {obj};
Local<Value> result;
has_pending_exception = !v8_fun->Call(context, Utils::ToLocal(debug), kArgc,
argv).ToLocal(&result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
Local<Value> Debug::GetMirror(v8::Local<v8::Value> obj) {
RETURN_TO_LOCAL_UNCHECKED(GetMirror(Local<Context>(), obj), Value);
}
void Debug::ProcessDebugMessages() {
i::Isolate::Current()->debug()->ProcessDebugMessages(true);
}
Local<Context> Debug::GetDebugContext() {
i::Isolate* isolate = i::Isolate::Current();
ENTER_V8(isolate);
return Utils::ToLocal(isolate->debug()->GetDebugContext());
}
void Debug::SetLiveEditEnabled(Isolate* isolate, bool enable) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
internal_isolate->debug()->set_live_edit_enabled(enable);
}
MaybeLocal<Array> Debug::GetInternalProperties(Isolate* v8_isolate,
Local<Value> value) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8(isolate);
i::Handle<i::Object> val = Utils::OpenHandle(*value);
i::Handle<i::JSArray> result;
if (!i::Runtime::GetInternalProperties(isolate, val).ToHandle(&result))
return MaybeLocal<Array>();
return Utils::ToLocal(result);
}
Local<String> CpuProfileNode::GetFunctionName() const {
i::Isolate* isolate = i::Isolate::Current();
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
const i::CodeEntry* entry = node->entry();
i::Handle<i::String> name =
isolate->factory()->InternalizeUtf8String(entry->name());
if (!entry->has_name_prefix()) {
return ToApiHandle<String>(name);
} else {
// We do not expect this to fail. Change this if it does.
i::Handle<i::String> cons = isolate->factory()->NewConsString(
isolate->factory()->InternalizeUtf8String(entry->name_prefix()),
name).ToHandleChecked();
return ToApiHandle<String>(cons);
}
}
int CpuProfileNode::GetScriptId() const {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
const i::CodeEntry* entry = node->entry();
return entry->script_id();
}
Local<String> CpuProfileNode::GetScriptResourceName() const {
i::Isolate* isolate = i::Isolate::Current();
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
return ToApiHandle<String>(isolate->factory()->InternalizeUtf8String(
node->entry()->resource_name()));
}
int CpuProfileNode::GetLineNumber() const {
return reinterpret_cast<const i::ProfileNode*>(this)->entry()->line_number();
}
int CpuProfileNode::GetColumnNumber() const {
return reinterpret_cast<const i::ProfileNode*>(this)->
entry()->column_number();
}
unsigned int CpuProfileNode::GetHitLineCount() const {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
return node->GetHitLineCount();
}
bool CpuProfileNode::GetLineTicks(LineTick* entries,
unsigned int length) const {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
return node->GetLineTicks(entries, length);
}
const char* CpuProfileNode::GetBailoutReason() const {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
return node->entry()->bailout_reason();
}
unsigned CpuProfileNode::GetHitCount() const {
return reinterpret_cast<const i::ProfileNode*>(this)->self_ticks();
}
unsigned CpuProfileNode::GetCallUid() const {
return reinterpret_cast<const i::ProfileNode*>(this)->function_id();
}
unsigned CpuProfileNode::GetNodeId() const {
return reinterpret_cast<const i::ProfileNode*>(this)->id();
}
int CpuProfileNode::GetChildrenCount() const {
return reinterpret_cast<const i::ProfileNode*>(this)->children()->length();
}
const CpuProfileNode* CpuProfileNode::GetChild(int index) const {
const i::ProfileNode* child =
reinterpret_cast<const i::ProfileNode*>(this)->children()->at(index);
return reinterpret_cast<const CpuProfileNode*>(child);
}
const std::vector<CpuProfileDeoptInfo>& CpuProfileNode::GetDeoptInfos() const {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
return node->deopt_infos();
}
void CpuProfile::Delete() {
i::Isolate* isolate = i::Isolate::Current();
i::CpuProfiler* profiler = isolate->cpu_profiler();
DCHECK(profiler != NULL);
profiler->DeleteProfile(reinterpret_cast<i::CpuProfile*>(this));
}
Local<String> CpuProfile::GetTitle() const {
i::Isolate* isolate = i::Isolate::Current();
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return ToApiHandle<String>(isolate->factory()->InternalizeUtf8String(
profile->title()));
}
const CpuProfileNode* CpuProfile::GetTopDownRoot() const {
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return reinterpret_cast<const CpuProfileNode*>(profile->top_down()->root());
}
const CpuProfileNode* CpuProfile::GetSample(int index) const {
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return reinterpret_cast<const CpuProfileNode*>(profile->sample(index));
}
int64_t CpuProfile::GetSampleTimestamp(int index) const {
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return (profile->sample_timestamp(index) - base::TimeTicks())
.InMicroseconds();
}
int64_t CpuProfile::GetStartTime() const {
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return (profile->start_time() - base::TimeTicks()).InMicroseconds();
}
int64_t CpuProfile::GetEndTime() const {
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
return (profile->end_time() - base::TimeTicks()).InMicroseconds();
}
int CpuProfile::GetSamplesCount() const {
return reinterpret_cast<const i::CpuProfile*>(this)->samples_count();
}
void CpuProfiler::SetSamplingInterval(int us) {
DCHECK(us >= 0);
return reinterpret_cast<i::CpuProfiler*>(this)->set_sampling_interval(
base::TimeDelta::FromMicroseconds(us));
}
void CpuProfiler::StartProfiling(Local<String> title, bool record_samples) {
reinterpret_cast<i::CpuProfiler*>(this)->StartProfiling(
*Utils::OpenHandle(*title), record_samples);
}
CpuProfile* CpuProfiler::StopProfiling(Local<String> title) {
return reinterpret_cast<CpuProfile*>(
reinterpret_cast<i::CpuProfiler*>(this)->StopProfiling(
*Utils::OpenHandle(*title)));
}
void CpuProfiler::SetIdle(bool is_idle) {
i::Isolate* isolate = reinterpret_cast<i::CpuProfiler*>(this)->isolate();
v8::StateTag state = isolate->current_vm_state();
DCHECK(state == v8::EXTERNAL || state == v8::IDLE);
if (isolate->js_entry_sp() != NULL) return;
if (is_idle) {
isolate->set_current_vm_state(v8::IDLE);
} else if (state == v8::IDLE) {
isolate->set_current_vm_state(v8::EXTERNAL);
}
}
static i::HeapGraphEdge* ToInternal(const HeapGraphEdge* edge) {
return const_cast<i::HeapGraphEdge*>(
reinterpret_cast<const i::HeapGraphEdge*>(edge));
}
HeapGraphEdge::Type HeapGraphEdge::GetType() const {
return static_cast<HeapGraphEdge::Type>(ToInternal(this)->type());
}
Local<Value> HeapGraphEdge::GetName() const {
i::Isolate* isolate = i::Isolate::Current();
i::HeapGraphEdge* edge = ToInternal(this);
switch (edge->type()) {
case i::HeapGraphEdge::kContextVariable:
case i::HeapGraphEdge::kInternal:
case i::HeapGraphEdge::kProperty:
case i::HeapGraphEdge::kShortcut:
case i::HeapGraphEdge::kWeak:
return ToApiHandle<String>(
isolate->factory()->InternalizeUtf8String(edge->name()));
case i::HeapGraphEdge::kElement:
case i::HeapGraphEdge::kHidden:
return ToApiHandle<Number>(
isolate->factory()->NewNumberFromInt(edge->index()));
default: UNREACHABLE();
}
return v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
const HeapGraphNode* HeapGraphEdge::GetFromNode() const {
const i::HeapEntry* from = ToInternal(this)->from();
return reinterpret_cast<const HeapGraphNode*>(from);
}
const HeapGraphNode* HeapGraphEdge::GetToNode() const {
const i::HeapEntry* to = ToInternal(this)->to();
return reinterpret_cast<const HeapGraphNode*>(to);
}
static i::HeapEntry* ToInternal(const HeapGraphNode* entry) {
return const_cast<i::HeapEntry*>(
reinterpret_cast<const i::HeapEntry*>(entry));
}
HeapGraphNode::Type HeapGraphNode::GetType() const {
return static_cast<HeapGraphNode::Type>(ToInternal(this)->type());
}
Local<String> HeapGraphNode::GetName() const {
i::Isolate* isolate = i::Isolate::Current();
return ToApiHandle<String>(
isolate->factory()->InternalizeUtf8String(ToInternal(this)->name()));
}
SnapshotObjectId HeapGraphNode::GetId() const {
return ToInternal(this)->id();
}
size_t HeapGraphNode::GetShallowSize() const {
return ToInternal(this)->self_size();
}
int HeapGraphNode::GetChildrenCount() const {
return ToInternal(this)->children().length();
}
const HeapGraphEdge* HeapGraphNode::GetChild(int index) const {
return reinterpret_cast<const HeapGraphEdge*>(
ToInternal(this)->children()[index]);
}
static i::HeapSnapshot* ToInternal(const HeapSnapshot* snapshot) {
return const_cast<i::HeapSnapshot*>(
reinterpret_cast<const i::HeapSnapshot*>(snapshot));
}
void HeapSnapshot::Delete() {
i::Isolate* isolate = i::Isolate::Current();
if (isolate->heap_profiler()->GetSnapshotsCount() > 1) {
ToInternal(this)->Delete();
} else {
// If this is the last snapshot, clean up all accessory data as well.
isolate->heap_profiler()->DeleteAllSnapshots();
}
}
const HeapGraphNode* HeapSnapshot::GetRoot() const {
return reinterpret_cast<const HeapGraphNode*>(ToInternal(this)->root());
}
const HeapGraphNode* HeapSnapshot::GetNodeById(SnapshotObjectId id) const {
return reinterpret_cast<const HeapGraphNode*>(
ToInternal(this)->GetEntryById(id));
}
int HeapSnapshot::GetNodesCount() const {
return ToInternal(this)->entries().length();
}
const HeapGraphNode* HeapSnapshot::GetNode(int index) const {
return reinterpret_cast<const HeapGraphNode*>(
&ToInternal(this)->entries().at(index));
}
SnapshotObjectId HeapSnapshot::GetMaxSnapshotJSObjectId() const {
return ToInternal(this)->max_snapshot_js_object_id();
}
void HeapSnapshot::Serialize(OutputStream* stream,
HeapSnapshot::SerializationFormat format) const {
Utils::ApiCheck(format == kJSON,
"v8::HeapSnapshot::Serialize",
"Unknown serialization format");
Utils::ApiCheck(stream->GetChunkSize() > 0,
"v8::HeapSnapshot::Serialize",
"Invalid stream chunk size");
i::HeapSnapshotJSONSerializer serializer(ToInternal(this));
serializer.Serialize(stream);
}
// static
STATIC_CONST_MEMBER_DEFINITION const SnapshotObjectId
HeapProfiler::kUnknownObjectId;
int HeapProfiler::GetSnapshotCount() {
return reinterpret_cast<i::HeapProfiler*>(this)->GetSnapshotsCount();
}
const HeapSnapshot* HeapProfiler::GetHeapSnapshot(int index) {
return reinterpret_cast<const HeapSnapshot*>(
reinterpret_cast<i::HeapProfiler*>(this)->GetSnapshot(index));
}
SnapshotObjectId HeapProfiler::GetObjectId(Local<Value> value) {
i::Handle<i::Object> obj = Utils::OpenHandle(*value);
return reinterpret_cast<i::HeapProfiler*>(this)->GetSnapshotObjectId(obj);
}
Local<Value> HeapProfiler::FindObjectById(SnapshotObjectId id) {
i::Handle<i::Object> obj =
reinterpret_cast<i::HeapProfiler*>(this)->FindHeapObjectById(id);
if (obj.is_null()) return Local<Value>();
return Utils::ToLocal(obj);
}
void HeapProfiler::ClearObjectIds() {
reinterpret_cast<i::HeapProfiler*>(this)->ClearHeapObjectMap();
}
const HeapSnapshot* HeapProfiler::TakeHeapSnapshot(
ActivityControl* control, ObjectNameResolver* resolver) {
return reinterpret_cast<const HeapSnapshot*>(
reinterpret_cast<i::HeapProfiler*>(this)
->TakeSnapshot(control, resolver));
}
void HeapProfiler::StartTrackingHeapObjects(bool track_allocations) {
reinterpret_cast<i::HeapProfiler*>(this)->StartHeapObjectsTracking(
track_allocations);
}
void HeapProfiler::StopTrackingHeapObjects() {
reinterpret_cast<i::HeapProfiler*>(this)->StopHeapObjectsTracking();
}
SnapshotObjectId HeapProfiler::GetHeapStats(OutputStream* stream,
int64_t* timestamp_us) {
i::HeapProfiler* heap_profiler = reinterpret_cast<i::HeapProfiler*>(this);
return heap_profiler->PushHeapObjectsStats(stream, timestamp_us);
}
void HeapProfiler::DeleteAllHeapSnapshots() {
reinterpret_cast<i::HeapProfiler*>(this)->DeleteAllSnapshots();
}
void HeapProfiler::SetWrapperClassInfoProvider(uint16_t class_id,
WrapperInfoCallback callback) {
reinterpret_cast<i::HeapProfiler*>(this)->DefineWrapperClass(class_id,
callback);
}
size_t HeapProfiler::GetProfilerMemorySize() {
return reinterpret_cast<i::HeapProfiler*>(this)->
GetMemorySizeUsedByProfiler();
}
void HeapProfiler::SetRetainedObjectInfo(UniqueId id,
RetainedObjectInfo* info) {
reinterpret_cast<i::HeapProfiler*>(this)->SetRetainedObjectInfo(id, info);
}
v8::Testing::StressType internal::Testing::stress_type_ =
v8::Testing::kStressTypeOpt;
void Testing::SetStressRunType(Testing::StressType type) {
internal::Testing::set_stress_type(type);
}
int Testing::GetStressRuns() {
if (internal::FLAG_stress_runs != 0) return internal::FLAG_stress_runs;
#ifdef DEBUG
// In debug mode the code runs much slower so stressing will only make two
// runs.
return 2;
#else
return 5;
#endif
}
static void SetFlagsFromString(const char* flags) {
V8::SetFlagsFromString(flags, i::StrLength(flags));
}
void Testing::PrepareStressRun(int run) {
static const char* kLazyOptimizations =
"--prepare-always-opt "
"--max-inlined-source-size=999999 "
"--max-inlined-nodes=999999 "
"--max-inlined-nodes-cumulative=999999 "
"--noalways-opt";
static const char* kForcedOptimizations = "--always-opt";
// If deoptimization stressed turn on frequent deoptimization. If no value
// is spefified through --deopt-every-n-times use a default default value.
static const char* kDeoptEvery13Times = "--deopt-every-n-times=13";
if (internal::Testing::stress_type() == Testing::kStressTypeDeopt &&
internal::FLAG_deopt_every_n_times == 0) {
SetFlagsFromString(kDeoptEvery13Times);
}
#ifdef DEBUG
// As stressing in debug mode only make two runs skip the deopt stressing
// here.
if (run == GetStressRuns() - 1) {
SetFlagsFromString(kForcedOptimizations);
} else {
SetFlagsFromString(kLazyOptimizations);
}
#else
if (run == GetStressRuns() - 1) {
SetFlagsFromString(kForcedOptimizations);
} else if (run != GetStressRuns() - 2) {
SetFlagsFromString(kLazyOptimizations);
}
#endif
}
// TODO(svenpanne) Deprecate this.
void Testing::DeoptimizeAll() {
i::Isolate* isolate = i::Isolate::Current();
i::HandleScope scope(isolate);
internal::Deoptimizer::DeoptimizeAll(isolate);
}
namespace internal {
void HandleScopeImplementer::FreeThreadResources() {
Free();
}
char* HandleScopeImplementer::ArchiveThread(char* storage) {
HandleScopeData* current = isolate_->handle_scope_data();
handle_scope_data_ = *current;
MemCopy(storage, this, sizeof(*this));
ResetAfterArchive();
current->Initialize();
return storage + ArchiveSpacePerThread();
}
int HandleScopeImplementer::ArchiveSpacePerThread() {
return sizeof(HandleScopeImplementer);
}
char* HandleScopeImplementer::RestoreThread(char* storage) {
MemCopy(this, storage, sizeof(*this));
*isolate_->handle_scope_data() = handle_scope_data_;
return storage + ArchiveSpacePerThread();
}
void HandleScopeImplementer::IterateThis(ObjectVisitor* v) {
#ifdef DEBUG
bool found_block_before_deferred = false;
#endif
// Iterate over all handles in the blocks except for the last.
for (int i = blocks()->length() - 2; i >= 0; --i) {
Object** block = blocks()->at(i);
if (last_handle_before_deferred_block_ != NULL &&
(last_handle_before_deferred_block_ <= &block[kHandleBlockSize]) &&
(last_handle_before_deferred_block_ >= block)) {
v->VisitPointers(block, last_handle_before_deferred_block_);
DCHECK(!found_block_before_deferred);
#ifdef DEBUG
found_block_before_deferred = true;
#endif
} else {
v->VisitPointers(block, &block[kHandleBlockSize]);
}
}
DCHECK(last_handle_before_deferred_block_ == NULL ||
found_block_before_deferred);
// Iterate over live handles in the last block (if any).
if (!blocks()->is_empty()) {
v->VisitPointers(blocks()->last(), handle_scope_data_.next);
}
List<Context*>* context_lists[2] = { &saved_contexts_, &entered_contexts_};
for (unsigned i = 0; i < arraysize(context_lists); i++) {
if (context_lists[i]->is_empty()) continue;
Object** start = reinterpret_cast<Object**>(&context_lists[i]->first());
v->VisitPointers(start, start + context_lists[i]->length());
}
}
void HandleScopeImplementer::Iterate(ObjectVisitor* v) {
HandleScopeData* current = isolate_->handle_scope_data();
handle_scope_data_ = *current;
IterateThis(v);
}
char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
HandleScopeImplementer* scope_implementer =
reinterpret_cast<HandleScopeImplementer*>(storage);
scope_implementer->IterateThis(v);
return storage + ArchiveSpacePerThread();
}
DeferredHandles* HandleScopeImplementer::Detach(Object** prev_limit) {
DeferredHandles* deferred =
new DeferredHandles(isolate()->handle_scope_data()->next, isolate());
while (!blocks_.is_empty()) {
Object** block_start = blocks_.last();
Object** block_limit = &block_start[kHandleBlockSize];
// We should not need to check for SealHandleScope here. Assert this.
DCHECK(prev_limit == block_limit ||
!(block_start <= prev_limit && prev_limit <= block_limit));
if (prev_limit == block_limit) break;
deferred->blocks_.Add(blocks_.last());
blocks_.RemoveLast();
}
// deferred->blocks_ now contains the blocks installed on the
// HandleScope stack since BeginDeferredScope was called, but in
// reverse order.
DCHECK(prev_limit == NULL || !blocks_.is_empty());
DCHECK(!blocks_.is_empty() && prev_limit != NULL);
DCHECK(last_handle_before_deferred_block_ != NULL);
last_handle_before_deferred_block_ = NULL;
return deferred;
}
void HandleScopeImplementer::BeginDeferredScope() {
DCHECK(last_handle_before_deferred_block_ == NULL);
last_handle_before_deferred_block_ = isolate()->handle_scope_data()->next;
}
DeferredHandles::~DeferredHandles() {
isolate_->UnlinkDeferredHandles(this);
for (int i = 0; i < blocks_.length(); i++) {
#ifdef ENABLE_HANDLE_ZAPPING
HandleScope::ZapRange(blocks_[i], &blocks_[i][kHandleBlockSize]);
#endif
isolate_->handle_scope_implementer()->ReturnBlock(blocks_[i]);
}
}
void DeferredHandles::Iterate(ObjectVisitor* v) {
DCHECK(!blocks_.is_empty());
DCHECK((first_block_limit_ >= blocks_.first()) &&
(first_block_limit_ <= &(blocks_.first())[kHandleBlockSize]));
v->VisitPointers(blocks_.first(), first_block_limit_);
for (int i = 1; i < blocks_.length(); i++) {
v->VisitPointers(blocks_[i], &blocks_[i][kHandleBlockSize]);
}
}
void InvokeAccessorGetterCallback(
v8::Local<v8::Name> property,
const v8::PropertyCallbackInfo<v8::Value>& info,
v8::AccessorNameGetterCallback getter) {
// Leaving JavaScript.
Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
Address getter_address = reinterpret_cast<Address>(reinterpret_cast<intptr_t>(
getter));
VMState<EXTERNAL> state(isolate);
ExternalCallbackScope call_scope(isolate, getter_address);
getter(property, info);
}
void InvokeFunctionCallback(const v8::FunctionCallbackInfo<v8::Value>& info,
v8::FunctionCallback callback) {
Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
Address callback_address =
reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
VMState<EXTERNAL> state(isolate);
ExternalCallbackScope call_scope(isolate, callback_address);
callback(info);
}
} // namespace internal
} // namespace v8
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