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cobalt / cobalt / 3933d9286b8c6b81e480dfbd894336405c89faa3 / . / src / v8 / src / api.cc
blob: 2bd3135de757a787d2533da956a8edb68a1994c1 [file] [log] [blame]
// 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 <limits>
#include <vector>
#include "include/v8-debug.h"
#include "include/v8-profiler.h"
#include "include/v8-testing.h"
#include "include/v8-util.h"
#include "src/accessors.h"
#include "src/api-natives.h"
#include "src/assert-scope.h"
#include "src/base/functional.h"
#include "src/base/logging.h"
#include "src/base/platform/platform.h"
#include "src/base/platform/time.h"
#include "src/base/safe_conversions.h"
#include "src/base/utils/random-number-generator.h"
#include "src/bootstrapper.h"
#include "src/builtins/builtins-utils.h"
#include "src/char-predicates-inl.h"
#include "src/code-stubs.h"
#include "src/compiler-dispatcher/compiler-dispatcher.h"
#include "src/compiler.h"
#include "src/contexts.h"
#include "src/conversions-inl.h"
#include "src/counters.h"
#include "src/debug/debug-coverage.h"
#include "src/debug/debug-type-profile.h"
#include "src/debug/debug.h"
#include "src/deoptimizer.h"
#include "src/detachable-vector.h"
#include "src/execution.h"
#include "src/frames-inl.h"
#include "src/gdb-jit.h"
#include "src/global-handles.h"
#include "src/globals.h"
#include "src/icu_util.h"
#include "src/isolate-inl.h"
#include "src/json-parser.h"
#include "src/json-stringifier.h"
#include "src/messages.h"
#include "src/objects-inl.h"
#include "src/parsing/background-parsing-task.h"
#include "src/parsing/parser.h"
#include "src/parsing/scanner-character-streams.h"
#include "src/pending-compilation-error-handler.h"
#include "src/profiler/cpu-profiler.h"
#include "src/profiler/heap-profiler.h"
#include "src/profiler/heap-snapshot-generator-inl.h"
#include "src/profiler/profile-generator-inl.h"
#include "src/profiler/tick-sample.h"
#include "src/property-descriptor.h"
#include "src/property-details.h"
#include "src/property.h"
#include "src/prototype.h"
#include "src/runtime-profiler.h"
#include "src/runtime/runtime.h"
#include "src/simulator.h"
#include "src/snapshot/builtin-serializer.h"
#include "src/snapshot/code-serializer.h"
#include "src/snapshot/natives.h"
#include "src/snapshot/snapshot.h"
#include "src/startup-data-util.h"
#include "src/tracing/trace-event.h"
#include "src/trap-handler/trap-handler.h"
#include "src/unicode-cache-inl.h"
#include "src/unicode-inl.h"
#include "src/v8.h"
#include "src/v8threads.h"
#include "src/value-serializer.h"
#include "src/version.h"
#include "src/vm-state-inl.h"
#include "src/wasm/compilation-manager.h"
#include "src/wasm/streaming-decoder.h"
#include "src/wasm/wasm-engine.h"
#include "src/wasm/wasm-objects-inl.h"
#include "src/wasm/wasm-result.h"
#include "src/wasm/wasm-serialization.h"
#if V8_OS_STARBOARD
#include "src/poems.h"
#endif
namespace v8 {
/*
* Most API methods should use one of the three macros:
*
* ENTER_V8, ENTER_V8_NO_SCRIPT, ENTER_V8_NO_SCRIPT_NO_EXCEPTION.
*
* The latter two assume that no script is executed, and no exceptions are
* scheduled in addition (respectively). Creating a pending exception and
* removing it before returning is ok.
*
* Exceptions should be handled either by invoking one of the
* RETURN_ON_FAILED_EXECUTION* macros.
*
* Don't use macros with DO_NOT_USE in their name.
*
* TODO(jochen): Document debugger specific macros.
* TODO(jochen): Document LOG_API and other RuntimeCallStats macros.
* TODO(jochen): All API methods should invoke one of the ENTER_V8* macros.
* TODO(jochen): Remove calls form API methods to DO_NOT_USE macros.
*/
#define LOG_API(isolate, class_name, function_name) \
i::RuntimeCallTimerScope _runtime_timer( \
isolate, i::RuntimeCallCounterId::kAPI_##class_name##_##function_name); \
LOG(isolate, ApiEntryCall("v8::" #class_name "::" #function_name))
#define ENTER_V8_DO_NOT_USE(isolate) i::VMState<v8::OTHER> __state__((isolate))
#define ENTER_V8_HELPER_DO_NOT_USE(isolate, context, class_name, \
function_name, bailout_value, \
HandleScopeClass, do_callback) \
if (IsExecutionTerminatingCheck(isolate)) { \
return bailout_value; \
} \
HandleScopeClass handle_scope(isolate); \
CallDepthScope<do_callback> call_depth_scope(isolate, context); \
LOG_API(isolate, class_name, function_name); \
i::VMState<v8::OTHER> __state__((isolate)); \
bool has_pending_exception = false
#define PREPARE_FOR_DEBUG_INTERFACE_EXECUTION_WITH_ISOLATE(isolate, T) \
if (IsExecutionTerminatingCheck(isolate)) { \
return MaybeLocal<T>(); \
} \
InternalEscapableScope handle_scope(isolate); \
CallDepthScope<false> call_depth_scope(isolate, v8::Local<v8::Context>()); \
i::VMState<v8::OTHER> __state__((isolate)); \
bool has_pending_exception = false
#define PREPARE_FOR_EXECUTION_WITH_CONTEXT(context, class_name, function_name, \
bailout_value, HandleScopeClass, \
do_callback) \
auto isolate = context.IsEmpty() \
? i::Isolate::Current() \
: reinterpret_cast<i::Isolate*>(context->GetIsolate()); \
ENTER_V8_HELPER_DO_NOT_USE(isolate, context, class_name, function_name, \
bailout_value, HandleScopeClass, do_callback);
#define PREPARE_FOR_EXECUTION(context, class_name, function_name, T) \
PREPARE_FOR_EXECUTION_WITH_CONTEXT(context, class_name, function_name, \
MaybeLocal<T>(), InternalEscapableScope, \
false)
#define ENTER_V8(isolate, context, class_name, function_name, bailout_value, \
HandleScopeClass) \
ENTER_V8_HELPER_DO_NOT_USE(isolate, context, class_name, function_name, \
bailout_value, HandleScopeClass, true)
#ifdef DEBUG
#define ENTER_V8_NO_SCRIPT(isolate, context, class_name, function_name, \
bailout_value, HandleScopeClass) \
ENTER_V8_HELPER_DO_NOT_USE(isolate, context, class_name, function_name, \
bailout_value, HandleScopeClass, false); \
i::DisallowJavascriptExecutionDebugOnly __no_script__((isolate))
#define ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate) \
i::VMState<v8::OTHER> __state__((isolate)); \
i::DisallowJavascriptExecutionDebugOnly __no_script__((isolate)); \
i::DisallowExceptions __no_exceptions__((isolate))
#define ENTER_V8_FOR_NEW_CONTEXT(isolate) \
i::VMState<v8::OTHER> __state__((isolate)); \
i::DisallowExceptions __no_exceptions__((isolate))
#else
#define ENTER_V8_NO_SCRIPT(isolate, context, class_name, function_name, \
bailout_value, HandleScopeClass) \
ENTER_V8_HELPER_DO_NOT_USE(isolate, context, class_name, function_name, \
bailout_value, HandleScopeClass, false)
#define ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate) \
i::VMState<v8::OTHER> __state__((isolate));
#define ENTER_V8_FOR_NEW_CONTEXT(isolate) \
i::VMState<v8::OTHER> __state__((isolate));
#endif // DEBUG
#define EXCEPTION_BAILOUT_CHECK_SCOPED_DO_NOT_USE(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_DO_NOT_USE(isolate, MaybeLocal<T>())
#define RETURN_ON_FAILED_EXECUTION_PRIMITIVE(T) \
EXCEPTION_BAILOUT_CHECK_SCOPED_DO_NOT_USE(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)) {}
};
// TODO(jochen): This should be #ifdef DEBUG
#ifdef V8_CHECK_MICROTASKS_SCOPES_CONSISTENCY
void CheckMicrotasksScopesConsistency(i::Isolate* isolate) {
auto handle_scope_implementer = isolate->handle_scope_implementer();
if (handle_scope_implementer->microtasks_policy() ==
v8::MicrotasksPolicy::kScoped) {
DCHECK(handle_scope_implementer->GetMicrotasksScopeDepth() ||
!handle_scope_implementer->DebugMicrotasksScopeDepthIsZero());
}
}
#endif
template <bool do_callback>
class CallDepthScope {
public:
explicit CallDepthScope(i::Isolate* isolate, Local<Context> context)
: isolate_(isolate), context_(context), escaped_(false) {
// TODO(dcarney): remove this when blink stops crashing.
DCHECK(!isolate_->external_caught_exception());
isolate_->handle_scope_implementer()->IncrementCallDepth();
if (!context.IsEmpty()) {
i::Handle<i::Context> env = Utils::OpenHandle(*context);
i::HandleScopeImplementer* impl = isolate->handle_scope_implementer();
if (isolate->context() != nullptr &&
isolate->context()->native_context() == env->native_context()) {
context_ = Local<Context>();
} else {
impl->SaveContext(isolate->context());
isolate->set_context(*env);
}
}
if (do_callback) isolate_->FireBeforeCallEnteredCallback();
}
~CallDepthScope() {
if (!context_.IsEmpty()) {
i::HandleScopeImplementer* impl = isolate_->handle_scope_implementer();
isolate_->set_context(impl->RestoreContext());
}
if (!escaped_) isolate_->handle_scope_implementer()->DecrementCallDepth();
if (do_callback) isolate_->FireCallCompletedCallback();
// TODO(jochen): This should be #ifdef DEBUG
#ifdef V8_CHECK_MICROTASKS_SCOPES_CONSISTENCY
if (do_callback) CheckMicrotasksScopesConsistency(isolate_);
#endif
}
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(script->GetNameOrSourceURL(), isolate);
i::Handle<i::Object> source_map_url(script->source_mapping_url(), isolate);
i::Handle<i::FixedArray> host_defined_options(script->host_defined_options(),
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()),
v8::Integer::New(v8_isolate, script->column_offset()),
v8::Boolean::New(v8_isolate, options.IsSharedCrossOrigin()),
v8::Integer::New(v8_isolate, script->id()),
Utils::ToLocal(source_map_url),
v8::Boolean::New(v8_isolate, options.IsOpaque()),
v8::Boolean::New(v8_isolate, script->type() == i::Script::TYPE_WASM),
v8::Boolean::New(v8_isolate, options.IsModule()),
Utils::ToLocal(host_defined_options));
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 allocate memory FatalProcessOutOfMemory is called. The default
// OOM error handler is called and execution is stopped.
void i::V8::FatalProcessOutOfMemory(const char* location, bool is_heap_oom) {
i::Isolate* isolate = i::Isolate::Current();
char last_few_messages[Heap::kTraceRingBufferSize + 1];
char js_stacktrace[Heap::kStacktraceBufferSize + 1];
i::HeapStats heap_stats;
if (isolate == nullptr) {
// On a background thread -> we cannot retrieve memory information from the
// Isolate. Write easy-to-recognize values on the stack.
memset(last_few_messages, 0x0BADC0DE, Heap::kTraceRingBufferSize + 1);
memset(js_stacktrace, 0x0BADC0DE, Heap::kStacktraceBufferSize + 1);
memset(&heap_stats, 0xBADC0DE, sizeof(heap_stats));
// Note that the embedder's oom handler won't be called in this case. We
// just crash.
FATAL("API fatal error handler returned after process out of memory");
return;
}
memset(last_few_messages, 0, Heap::kTraceRingBufferSize + 1);
memset(js_stacktrace, 0, Heap::kStacktraceBufferSize + 1);
intptr_t start_marker;
heap_stats.start_marker = &start_marker;
size_t new_space_size;
heap_stats.new_space_size = &new_space_size;
size_t new_space_capacity;
heap_stats.new_space_capacity = &new_space_capacity;
size_t old_space_size;
heap_stats.old_space_size = &old_space_size;
size_t old_space_capacity;
heap_stats.old_space_capacity = &old_space_capacity;
size_t code_space_size;
heap_stats.code_space_size = &code_space_size;
size_t code_space_capacity;
heap_stats.code_space_capacity = &code_space_capacity;
size_t map_space_size;
heap_stats.map_space_size = &map_space_size;
size_t map_space_capacity;
heap_stats.map_space_capacity = &map_space_capacity;
size_t lo_space_size;
heap_stats.lo_space_size = &lo_space_size;
size_t global_handle_count;
heap_stats.global_handle_count = &global_handle_count;
size_t weak_global_handle_count;
heap_stats.weak_global_handle_count = &weak_global_handle_count;
size_t pending_global_handle_count;
heap_stats.pending_global_handle_count = &pending_global_handle_count;
size_t near_death_global_handle_count;
heap_stats.near_death_global_handle_count = &near_death_global_handle_count;
size_t free_global_handle_count;
heap_stats.free_global_handle_count = &free_global_handle_count;
size_t memory_allocator_size;
heap_stats.memory_allocator_size = &memory_allocator_size;
size_t memory_allocator_capacity;
heap_stats.memory_allocator_capacity = &memory_allocator_capacity;
size_t malloced_memory;
heap_stats.malloced_memory = &malloced_memory;
size_t malloced_peak_memory;
heap_stats.malloced_peak_memory = &malloced_peak_memory;
size_t objects_per_type[LAST_TYPE + 1] = {0};
heap_stats.objects_per_type = objects_per_type;
size_t 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;
intptr_t 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 == nullptr || 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::ReportOOMFailure(location, is_heap_oom);
// 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 = nullptr;
if (isolate != nullptr) {
callback = isolate->exception_behavior();
}
if (callback == nullptr) {
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();
}
void Utils::ReportOOMFailure(const char* location, bool is_heap_oom) {
i::Isolate* isolate = i::Isolate::Current();
OOMErrorCallback oom_callback = isolate->oom_behavior();
if (oom_callback == nullptr) {
// TODO(wfh): Remove this fallback once Blink is setting OOM handler. See
// crbug.com/614440.
FatalErrorCallback fatal_callback = isolate->exception_behavior();
if (fatal_callback == nullptr) {
base::OS::PrintError("\n#\n# Fatal %s OOM in %s\n#\n\n",
is_heap_oom ? "javascript" : "process", location);
base::OS::Abort();
} else {
fatal_callback(location,
is_heap_oom
? "Allocation failed - JavaScript heap out of memory"
: "Allocation failed - process out of memory");
}
} else {
oom_callback(location, is_heap_oom);
}
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);
}
void* v8::ArrayBuffer::Allocator::Reserve(size_t length) { UNIMPLEMENTED(); }
void v8::ArrayBuffer::Allocator::Free(void* data, size_t length,
AllocationMode mode) {
switch (mode) {
case AllocationMode::kNormal: {
Free(data, length);
return;
}
case AllocationMode::kReservation: {
UNIMPLEMENTED();
return;
}
}
}
void v8::ArrayBuffer::Allocator::SetProtection(
void* data, size_t length,
v8::ArrayBuffer::Allocator::Protection protection) {
UNIMPLEMENTED();
}
namespace {
class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
public:
virtual void* Allocate(size_t length) {
#if V8_OS_AIX && _LINUX_SOURCE_COMPAT
// Work around for GCC bug on AIX
// See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79839
void* data = __linux_calloc(length, 1);
#else
void* data = calloc(length, 1);
#endif
return data;
}
virtual void* AllocateUninitialized(size_t length) {
#if V8_OS_AIX && _LINUX_SOURCE_COMPAT
// Work around for GCC bug on AIX
// See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79839
void* data = __linux_malloc(length);
#else
void* data = malloc(length);
#endif
return data;
}
virtual void Free(void* data, size_t) { free(data); }
virtual void* Reserve(size_t length) {
size_t page_size = i::AllocatePageSize();
size_t allocated = RoundUp(length, page_size);
void* address = i::AllocatePages(i::GetRandomMmapAddr(), allocated,
page_size, PageAllocator::kNoAccess);
return address;
}
virtual void Free(void* data, size_t length,
v8::ArrayBuffer::Allocator::AllocationMode mode) {
switch (mode) {
case v8::ArrayBuffer::Allocator::AllocationMode::kNormal: {
return Free(data, length);
}
case v8::ArrayBuffer::Allocator::AllocationMode::kReservation: {
size_t page_size = i::AllocatePageSize();
size_t allocated = RoundUp(length, page_size);
CHECK(i::FreePages(data, allocated));
return;
}
}
}
virtual void SetProtection(
void* data, size_t length,
v8::ArrayBuffer::Allocator::Protection protection) {
DCHECK(protection == v8::ArrayBuffer::Allocator::Protection::kNoAccess ||
protection == v8::ArrayBuffer::Allocator::Protection::kReadWrite);
PageAllocator::Permission permission =
(protection == v8::ArrayBuffer::Allocator::Protection::kReadWrite)
? PageAllocator::kReadWrite
: PageAllocator::kNoAccess;
CHECK(i::SetPermissions(data, length, permission));
}
};
bool RunExtraCode(Isolate* isolate, Local<Context> context,
const char* utf8_source, const char* name) {
base::ElapsedTimer timer;
timer.Start();
Context::Scope context_scope(context);
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, name, 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 %s took %0.3f ms\n", name,
timer.Elapsed().InMillisecondsF());
}
timer.Stop();
CHECK(!try_catch.HasCaught());
return true;
}
struct SnapshotCreatorData {
explicit SnapshotCreatorData(Isolate* isolate)
: isolate_(isolate),
default_context_(),
contexts_(isolate),
created_(false) {}
static SnapshotCreatorData* cast(void* data) {
return reinterpret_cast<SnapshotCreatorData*>(data);
}
ArrayBufferAllocator allocator_;
Isolate* isolate_;
Persistent<Context> default_context_;
SerializeInternalFieldsCallback default_embedder_fields_serializer_;
PersistentValueVector<Context> contexts_;
std::vector<SerializeInternalFieldsCallback> embedder_fields_serializers_;
bool created_;
};
} // namespace
SnapshotCreator::SnapshotCreator(const intptr_t* external_references,
StartupData* existing_snapshot) {
i::Isolate* internal_isolate = new i::Isolate(true);
Isolate* isolate = reinterpret_cast<Isolate*>(internal_isolate);
SnapshotCreatorData* data = new SnapshotCreatorData(isolate);
data->isolate_ = isolate;
internal_isolate->set_array_buffer_allocator(&data->allocator_);
internal_isolate->set_api_external_references(external_references);
isolate->Enter();
const StartupData* blob = existing_snapshot
? existing_snapshot
: i::Snapshot::DefaultSnapshotBlob();
if (blob && blob->raw_size > 0) {
internal_isolate->set_snapshot_blob(blob);
i::Snapshot::Initialize(internal_isolate);
} else {
internal_isolate->Init(nullptr);
}
data_ = data;
}
SnapshotCreator::~SnapshotCreator() {
SnapshotCreatorData* data = SnapshotCreatorData::cast(data_);
DCHECK(data->created_);
Isolate* isolate = data->isolate_;
isolate->Exit();
isolate->Dispose();
delete data;
}
Isolate* SnapshotCreator::GetIsolate() {
return SnapshotCreatorData::cast(data_)->isolate_;
}
void SnapshotCreator::SetDefaultContext(
Local<Context> context, SerializeInternalFieldsCallback callback) {
DCHECK(!context.IsEmpty());
SnapshotCreatorData* data = SnapshotCreatorData::cast(data_);
DCHECK(!data->created_);
DCHECK(data->default_context_.IsEmpty());
Isolate* isolate = data->isolate_;
CHECK_EQ(isolate, context->GetIsolate());
data->default_context_.Reset(isolate, context);
data->default_embedder_fields_serializer_ = callback;
}
size_t SnapshotCreator::AddContext(Local<Context> context,
SerializeInternalFieldsCallback callback) {
DCHECK(!context.IsEmpty());
SnapshotCreatorData* data = SnapshotCreatorData::cast(data_);
DCHECK(!data->created_);
Isolate* isolate = data->isolate_;
CHECK_EQ(isolate, context->GetIsolate());
size_t index = data->contexts_.Size();
data->contexts_.Append(context);
data->embedder_fields_serializers_.push_back(callback);
return index;
}
size_t SnapshotCreator::AddTemplate(Local<Template> template_obj) {
return AddData(template_obj);
}
size_t SnapshotCreator::AddData(i::Object* object) {
DCHECK_NOT_NULL(object);
SnapshotCreatorData* data = SnapshotCreatorData::cast(data_);
DCHECK(!data->created_);
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(data->isolate_);
i::HandleScope scope(isolate);
i::Handle<i::Object> obj(object, isolate);
i::Handle<i::ArrayList> list;
if (!isolate->heap()->serialized_objects()->IsArrayList()) {
list = i::ArrayList::New(isolate, 1);
} else {
list = i::Handle<i::ArrayList>(
i::ArrayList::cast(isolate->heap()->serialized_objects()));
}
size_t index = static_cast<size_t>(list->Length());
list = i::ArrayList::Add(list, obj);
isolate->heap()->SetSerializedObjects(*list);
return index;
}
size_t SnapshotCreator::AddData(Local<Context> context, i::Object* object) {
DCHECK_NOT_NULL(object);
DCHECK(!SnapshotCreatorData::cast(data_)->created_);
i::Handle<i::Context> ctx = Utils::OpenHandle(*context);
i::Isolate* isolate = ctx->GetIsolate();
i::HandleScope scope(isolate);
i::Handle<i::Object> obj(object, isolate);
i::Handle<i::ArrayList> list;
if (!ctx->serialized_objects()->IsArrayList()) {
list = i::ArrayList::New(isolate, 1);
} else {
list =
i::Handle<i::ArrayList>(i::ArrayList::cast(ctx->serialized_objects()));
}
size_t index = static_cast<size_t>(list->Length());
list = i::ArrayList::Add(list, obj);
ctx->set_serialized_objects(*list);
return index;
}
namespace {
void ConvertSerializedObjectsToFixedArray(Local<Context> context) {
i::Handle<i::Context> ctx = Utils::OpenHandle(*context);
i::Isolate* isolate = ctx->GetIsolate();
if (!ctx->serialized_objects()->IsArrayList()) {
ctx->set_serialized_objects(isolate->heap()->empty_fixed_array());
} else {
i::Handle<i::ArrayList> list(i::ArrayList::cast(ctx->serialized_objects()));
i::Handle<i::FixedArray> elements = i::ArrayList::Elements(list);
ctx->set_serialized_objects(*elements);
}
}
void ConvertSerializedObjectsToFixedArray(i::Isolate* isolate) {
if (!isolate->heap()->serialized_objects()->IsArrayList()) {
isolate->heap()->SetSerializedObjects(isolate->heap()->empty_fixed_array());
} else {
i::Handle<i::ArrayList> list(
i::ArrayList::cast(isolate->heap()->serialized_objects()));
i::Handle<i::FixedArray> elements = i::ArrayList::Elements(list);
isolate->heap()->SetSerializedObjects(*elements);
}
}
} // anonymous namespace
StartupData SnapshotCreator::CreateBlob(
SnapshotCreator::FunctionCodeHandling function_code_handling) {
SnapshotCreatorData* data = SnapshotCreatorData::cast(data_);
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(data->isolate_);
DCHECK(!data->created_);
DCHECK(!data->default_context_.IsEmpty());
int num_additional_contexts = static_cast<int>(data->contexts_.Size());
{
i::HandleScope scope(isolate);
// Convert list of context-independent data to FixedArray.
ConvertSerializedObjectsToFixedArray(isolate);
// Convert lists of context-dependent data to FixedArray.
ConvertSerializedObjectsToFixedArray(
data->default_context_.Get(data->isolate_));
for (int i = 0; i < num_additional_contexts; i++) {
ConvertSerializedObjectsToFixedArray(data->contexts_.Get(i));
}
// We need to store the global proxy size upfront in case we need the
// bootstrapper to create a global proxy before we deserialize the context.
i::Handle<i::FixedArray> global_proxy_sizes =
isolate->factory()->NewFixedArray(num_additional_contexts, i::TENURED);
for (int i = 0; i < num_additional_contexts; i++) {
i::Handle<i::Context> context =
v8::Utils::OpenHandle(*data->contexts_.Get(i));
global_proxy_sizes->set(i,
i::Smi::FromInt(context->global_proxy()->Size()));
}
isolate->heap()->SetSerializedGlobalProxySizes(*global_proxy_sizes);
}
// We might rehash strings and re-sort descriptors. Clear the lookup cache.
isolate->descriptor_lookup_cache()->Clear();
// 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.
isolate->heap()->CollectAllAvailableGarbage(
i::GarbageCollectionReason::kSnapshotCreator);
isolate->heap()->CompactWeakFixedArrays();
i::DisallowHeapAllocation no_gc_from_here_on;
int num_contexts = num_additional_contexts + 1;
std::vector<i::Context*> contexts;
contexts.reserve(num_contexts);
{
i::HandleScope scope(isolate);
contexts.push_back(
*v8::Utils::OpenHandle(*data->default_context_.Get(data->isolate_)));
data->default_context_.Reset();
for (int i = 0; i < num_additional_contexts; i++) {
i::Handle<i::Context> context =
v8::Utils::OpenHandle(*data->contexts_.Get(i));
contexts.push_back(*context);
}
data->contexts_.Clear();
}
// Check that values referenced by global/eternal handles are accounted for.
i::SerializedHandleChecker handle_checker(isolate, &contexts);
CHECK(handle_checker.CheckGlobalAndEternalHandles());
// Complete in-object slack tracking for all functions.
i::HeapIterator heap_iterator(isolate->heap());
while (i::HeapObject* current_obj = heap_iterator.next()) {
if (!current_obj->IsJSFunction()) continue;
i::JSFunction* fun = i::JSFunction::cast(current_obj);
fun->CompleteInobjectSlackTrackingIfActive();
}
i::StartupSerializer startup_serializer(isolate, function_code_handling);
startup_serializer.SerializeStrongReferences();
// Serialize each context with a new partial serializer.
std::vector<i::SnapshotData*> context_snapshots;
context_snapshots.reserve(num_contexts);
// TODO(6593): generalize rehashing, and remove this flag.
bool can_be_rehashed = true;
for (int i = 0; i < num_contexts; i++) {
bool is_default_context = i == 0;
i::PartialSerializer partial_serializer(
isolate, &startup_serializer,
is_default_context ? data->default_embedder_fields_serializer_
: data->embedder_fields_serializers_[i - 1]);
partial_serializer.Serialize(&contexts[i], !is_default_context);
can_be_rehashed = can_be_rehashed && partial_serializer.can_be_rehashed();
context_snapshots.push_back(new i::SnapshotData(&partial_serializer));
}
// Builtin serialization places additional objects into the partial snapshot
// cache and thus needs to happen before SerializeWeakReferencesAndDeferred
// is called below.
i::BuiltinSerializer builtin_serializer(isolate, &startup_serializer);
builtin_serializer.SerializeBuiltinsAndHandlers();
startup_serializer.SerializeWeakReferencesAndDeferred();
can_be_rehashed = can_be_rehashed && startup_serializer.can_be_rehashed();
i::SnapshotData startup_snapshot(&startup_serializer);
i::BuiltinSnapshotData builtin_snapshot(&builtin_serializer);
StartupData result = i::Snapshot::CreateSnapshotBlob(
&startup_snapshot, &builtin_snapshot, context_snapshots, can_be_rehashed);
// Delete heap-allocated context snapshot instances.
for (const auto context_snapshot : context_snapshots) {
delete context_snapshot;
}
data->created_ = true;
return result;
}
StartupData V8::CreateSnapshotDataBlob(const char* embedded_source) {
// Create a new isolate and a new context from scratch, optionally run
// a script to embed, and serialize to create a snapshot blob.
StartupData result = {nullptr, 0};
base::ElapsedTimer timer;
timer.Start();
{
SnapshotCreator snapshot_creator;
Isolate* isolate = snapshot_creator.GetIsolate();
{
HandleScope scope(isolate);
Local<Context> context = Context::New(isolate);
if (embedded_source != nullptr &&
!RunExtraCode(isolate, context, embedded_source, "<embedded>")) {
return result;
}
snapshot_creator.SetDefaultContext(context);
}
result = snapshot_creator.CreateBlob(
SnapshotCreator::FunctionCodeHandling::kClear);
}
if (i::FLAG_profile_deserialization) {
i::PrintF("Creating snapshot took %0.3f ms\n",
timer.Elapsed().InMillisecondsF());
}
timer.Stop();
return result;
}
StartupData V8::WarmUpSnapshotDataBlob(StartupData cold_snapshot_blob,
const char* warmup_source) {
CHECK(cold_snapshot_blob.raw_size > 0 && cold_snapshot_blob.data != nullptr);
CHECK_NOT_NULL(warmup_source);
// Use following steps to create a warmed up snapshot blob from a cold one:
// - Create a new isolate from the cold snapshot.
// - Create a new context to run the warmup script. This will trigger
// compilation of executed functions.
// - Create a new context. This context will be unpolluted.
// - Serialize the isolate and the second context into a new snapshot blob.
StartupData result = {nullptr, 0};
base::ElapsedTimer timer;
timer.Start();
{
SnapshotCreator snapshot_creator(nullptr, &cold_snapshot_blob);
Isolate* isolate = snapshot_creator.GetIsolate();
{
HandleScope scope(isolate);
Local<Context> context = Context::New(isolate);
if (!RunExtraCode(isolate, context, warmup_source, "<warm-up>")) {
return result;
}
}
{
HandleScope handle_scope(isolate);
isolate->ContextDisposedNotification(false);
Local<Context> context = Context::New(isolate);
snapshot_creator.SetDefaultContext(context);
}
result = snapshot_creator.CreateBlob(
SnapshotCreator::FunctionCodeHandling::kKeep);
}
if (i::FLAG_profile_deserialization) {
i::PrintF("Warming up snapshot took %0.3f ms\n",
timer.Elapsed().InMillisecondsF());
}
timer.Stop();
return result;
}
void V8::SetDcheckErrorHandler(DcheckErrorCallback that) {
v8::base::SetDcheckFunction(that);
}
void V8::SetFlagsFromString(const char* str, int length) {
i::FlagList::SetFlagsFromString(str, length);
i::FlagList::EnforceFlagImplications();
}
void V8::SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags) {
i::FlagList::SetFlagsFromCommandLine(argc, argv, remove_flags);
}
RegisteredExtension* RegisteredExtension::first_extension_ = nullptr;
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 != nullptr) {
RegisteredExtension* next = re->next();
delete re;
re = next;
}
first_extension_ = nullptr;
}
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 != nullptr || source_length_ == 0);
}
ResourceConstraints::ResourceConstraints()
: max_semi_space_size_in_kb_(0),
max_old_space_size_(0),
stack_limit_(nullptr),
code_range_size_(0),
max_zone_pool_size_(0) {}
void ResourceConstraints::ConfigureDefaults(uint64_t physical_memory,
uint64_t virtual_memory_limit) {
set_max_semi_space_size_in_kb(
i::Heap::ComputeMaxSemiSpaceSize(physical_memory));
set_max_old_space_size(
static_cast<int>(i::Heap::ComputeMaxOldGenerationSize(physical_memory)));
set_max_zone_pool_size(i::AccountingAllocator::kMaxPoolSize);
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) {
size_t semi_space_size = constraints.max_semi_space_size_in_kb();
int old_space_size = constraints.max_old_space_size();
size_t code_range_size = constraints.code_range_size();
size_t max_pool_size = constraints.max_zone_pool_size();
if (semi_space_size != 0 || old_space_size != 0 || code_range_size != 0) {
isolate->heap()->ConfigureHeap(semi_space_size, old_space_size,
code_range_size);
}
isolate->allocator()->ConfigureSegmentPool(max_pool_size);
if (constraints.stack_limit() != nullptr) {
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::RegisterExternallyReferencedObject(i::Object** object,
i::Isolate* isolate) {
isolate->heap()->RegisterExternallyReferencedObject(object);
}
void V8::MakeWeak(i::Object** location, void* parameter,
int embedder_field_index1, int embedder_field_index2,
WeakCallbackInfo<void>::Callback weak_callback) {
WeakCallbackType type = WeakCallbackType::kParameter;
if (embedder_field_index1 == 0) {
if (embedder_field_index2 == 1) {
type = WeakCallbackType::kInternalFields;
} else {
DCHECK_EQ(embedder_field_index2, -1);
type = WeakCallbackType::kInternalFields;
}
} else {
DCHECK_EQ(embedder_field_index1, -1);
DCHECK_EQ(embedder_field_index2, -1);
}
i::GlobalHandles::MakeWeak(location, parameter, weak_callback, type);
}
void V8::MakeWeak(i::Object** location, void* parameter,
WeakCallbackInfo<void>::Callback weak_callback,
WeakCallbackType type) {
i::GlobalHandles::MakeWeak(location, parameter, weak_callback, type);
}
void V8::MakeWeak(i::Object*** location_addr) {
i::GlobalHandles::MakeWeak(location_addr);
}
void* V8::ClearWeak(i::Object** location) {
return i::GlobalHandles::ClearWeakness(location);
}
void V8::DisposeGlobal(i::Object** location) {
i::GlobalHandles::Destroy(location);
}
Value* V8::Eternalize(Isolate* v8_isolate, Value* value) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
i::Object* object = *Utils::OpenHandle(value);
int index = -1;
isolate->eternal_handles()->Create(isolate, object, &index);
return reinterpret_cast<Value*>(
isolate->eternal_handles()->Get(index).location());
}
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_);
}
void* HandleScope::operator new(size_t) { base::OS::Abort(); }
void* HandleScope::operator new[](size_t) { base::OS::Abort(); }
void HandleScope::operator delete(void*, size_t) { base::OS::Abort(); }
void HandleScope::operator delete[](void*, size_t) { base::OS::Abort(); }
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_)->IsTheHole(heap->isolate()),
"EscapableHandleScope::Escape", "Escape value set twice");
if (escape_value == nullptr) {
*escape_slot_ = heap->undefined_value();
return nullptr;
}
*escape_slot_ = *escape_value;
return escape_slot_;
}
void* EscapableHandleScope::operator new(size_t) { base::OS::Abort(); }
void* EscapableHandleScope::operator new[](size_t) { base::OS::Abort(); }
void EscapableHandleScope::operator delete(void*, size_t) { base::OS::Abort(); }
void EscapableHandleScope::operator delete[](void*, size_t) {
base::OS::Abort();
}
SealHandleScope::SealHandleScope(Isolate* isolate)
: isolate_(reinterpret_cast<i::Isolate*>(isolate)) {
i::HandleScopeData* current = isolate_->handle_scope_data();
prev_limit_ = current->limit;
current->limit = current->next;
prev_sealed_level_ = current->sealed_level;
current->sealed_level = current->level;
}
SealHandleScope::~SealHandleScope() {
i::HandleScopeData* current = isolate_->handle_scope_data();
DCHECK_EQ(current->next, current->limit);
current->limit = prev_limit_;
DCHECK_EQ(current->level, current->sealed_level);
current->sealed_level = prev_sealed_level_;
}
void* SealHandleScope::operator new(size_t) { base::OS::Abort(); }
void* SealHandleScope::operator new[](size_t) { base::OS::Abort(); }
void SealHandleScope::operator delete(void*, size_t) { base::OS::Abort(); }
void SealHandleScope::operator delete[](void*, size_t) { base::OS::Abort(); }
void Context::Enter() {
i::Handle<i::Context> env = Utils::OpenHandle(this);
i::Isolate* isolate = env->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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());
}
Context::BackupIncumbentScope::BackupIncumbentScope(
Local<Context> backup_incumbent_context)
: backup_incumbent_context_(backup_incumbent_context) {
DCHECK(!backup_incumbent_context_.IsEmpty());
i::Handle<i::Context> env = Utils::OpenHandle(*backup_incumbent_context_);
i::Isolate* isolate = env->GetIsolate();
prev_ = isolate->top_backup_incumbent_scope();
isolate->set_top_backup_incumbent_scope(this);
}
Context::BackupIncumbentScope::~BackupIncumbentScope() {
i::Handle<i::Context> env = Utils::OpenHandle(*backup_incumbent_context_);
i::Isolate* isolate = env->GetIsolate();
isolate->set_top_backup_incumbent_scope(prev_);
}
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 nullptr;
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));
}
// --- 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_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
auto value_obj = Utils::OpenHandle(*value);
CHECK(!value_obj->IsJSReceiver() || value_obj->IsTemplateInfo());
if (value_obj->IsObjectTemplateInfo()) {
templ->set_serial_number(i::Smi::kZero);
if (templ->IsFunctionTemplateInfo()) {
i::Handle<i::FunctionTemplateInfo>::cast(templ)->set_do_not_cache(true);
}
}
i::ApiNatives::AddDataProperty(isolate, templ, Utils::OpenHandle(*name),
value_obj,
static_cast<i::PropertyAttributes>(attribute));
}
void Template::SetPrivate(v8::Local<Private> name, v8::Local<Data> value,
v8::PropertyAttribute attribute) {
Set(Utils::ToLocal(Utils::OpenHandle(reinterpret_cast<Name*>(*name))), value,
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_NO_SCRIPT_NO_EXCEPTION(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<i::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);
}
static Local<ObjectTemplate> ObjectTemplateNew(
i::Isolate* isolate, v8::Local<FunctionTemplate> constructor,
bool do_not_cache);
Local<ObjectTemplate> FunctionTemplate::PrototypeTemplate() {
i::Isolate* i_isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::Handle<i::Object> result(Utils::OpenHandle(this)->prototype_template(),
i_isolate);
if (result->IsUndefined(i_isolate)) {
// Do not cache prototype objects.
result = Utils::OpenHandle(
*ObjectTemplateNew(i_isolate, Local<FunctionTemplate>(), true));
Utils::OpenHandle(this)->set_prototype_template(*result);
}
return ToApiHandle<ObjectTemplate>(result);
}
void FunctionTemplate::SetPrototypeProviderTemplate(
Local<FunctionTemplate> prototype_provider) {
i::Isolate* i_isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::Handle<i::Object> result = Utils::OpenHandle(*prototype_provider);
auto info = Utils::OpenHandle(this);
CHECK(info->prototype_template()->IsUndefined(i_isolate));
CHECK(info->parent_template()->IsUndefined(i_isolate));
info->set_prototype_provider_template(*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* i_isolate = info->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
CHECK(info->prototype_provider_template()->IsUndefined(i_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,
v8::Local<Private> cached_property_name = v8::Local<Private>()) {
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::FUNCTION_TEMPLATE_INFO_TYPE, i::TENURED);
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 = i::FunctionTemplateInfo::kInvalidSerialNumber;
if (!do_not_cache) {
next_serial_number = isolate->heap()->GetNextTemplateSerialNumber();
}
obj->set_serial_number(i::Smi::FromInt(next_serial_number));
if (callback != 0) {
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));
}
obj->set_cached_property_name(
cached_property_name.IsEmpty()
? isolate->heap()->the_hole_value()
: *Utils::OpenHandle(*cached_property_name));
return Utils::ToLocal(obj);
}
Local<FunctionTemplate> FunctionTemplate::New(
Isolate* isolate, FunctionCallback callback, v8::Local<Value> data,
v8::Local<Signature> signature, int length, ConstructorBehavior behavior) {
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.
LOG_API(i_isolate, FunctionTemplate, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
auto templ =
FunctionTemplateNew(i_isolate, callback, data, signature, length, false);
if (behavior == ConstructorBehavior::kThrow) templ->RemovePrototype();
return templ;
}
MaybeLocal<FunctionTemplate> FunctionTemplate::FromSnapshot(Isolate* isolate,
size_t index) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::FixedArray* serialized_objects = i_isolate->heap()->serialized_objects();
int int_index = static_cast<int>(index);
if (int_index < serialized_objects->length()) {
i::Object* info = serialized_objects->get(int_index);
if (info->IsFunctionTemplateInfo()) {
return Utils::ToLocal(i::Handle<i::FunctionTemplateInfo>(
i::FunctionTemplateInfo::cast(info)));
}
}
return Local<FunctionTemplate>();
}
Local<FunctionTemplate> FunctionTemplate::NewWithCache(
Isolate* isolate, FunctionCallback callback, Local<Private> cache_property,
Local<Value> data, Local<Signature> signature, int length) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, FunctionTemplate, NewWithCache);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
return FunctionTemplateNew(i_isolate, callback, data, signature, length,
false, cache_property);
}
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));
}
#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_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::TUPLE3_TYPE, i::TENURED);
i::Handle<i::CallHandlerInfo> obj =
i::Handle<i::CallHandlerInfo>::cast(struct_obj);
SET_FIELD_WRAPPED(obj, set_callback, callback);
SET_FIELD_WRAPPED(obj, set_js_callback, obj->redirected_callback());
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
obj->set_data(*Utils::OpenHandle(*data));
info->set_call_code(*obj);
}
namespace {
template <typename Getter, typename Setter>
i::Handle<i::AccessorInfo> MakeAccessorInfo(
i::Isolate* isolate, v8::Local<Name> name, Getter getter, Setter setter,
v8::Local<Value> data, v8::AccessControl settings,
v8::Local<AccessorSignature> signature, bool is_special_data_property,
bool replace_on_access) {
i::Handle<i::AccessorInfo> obj = isolate->factory()->NewAccessorInfo();
SET_FIELD_WRAPPED(obj, set_getter, getter);
DCHECK_IMPLIES(replace_on_access,
is_special_data_property && setter == nullptr);
if (is_special_data_property && setter == nullptr) {
setter = reinterpret_cast<Setter>(&i::Accessors::ReconfigureToDataProperty);
}
SET_FIELD_WRAPPED(obj, set_setter, setter);
i::Address redirected = obj->redirected_getter();
if (redirected != nullptr) SET_FIELD_WRAPPED(obj, set_js_getter, redirected);
if (data.IsEmpty()) {
data = v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
obj->set_data(*Utils::OpenHandle(*data));
obj->set_is_special_data_property(is_special_data_property);
obj->set_replace_on_access(replace_on_access);
i::Handle<i::Name> accessor_name = Utils::OpenHandle(*name);
if (!accessor_name->IsUniqueName()) {
accessor_name = isolate->factory()->InternalizeString(
i::Handle<i::String>::cast(accessor_name));
}
obj->set_name(*accessor_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_initial_property_attributes(i::NONE);
if (!signature.IsEmpty()) {
obj->set_expected_receiver_type(*Utils::OpenHandle(*signature));
}
return obj;
}
} // namespace
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_NO_SCRIPT_NO_EXCEPTION(isolate);
if (handle->instance_template()->IsUndefined(isolate)) {
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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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);
}
static Local<ObjectTemplate> ObjectTemplateNew(
i::Isolate* isolate, v8::Local<FunctionTemplate> constructor,
bool do_not_cache) {
LOG_API(isolate, ObjectTemplate, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::Handle<i::Struct> struct_obj =
isolate->factory()->NewStruct(i::OBJECT_TEMPLATE_INFO_TYPE, i::TENURED);
i::Handle<i::ObjectTemplateInfo> obj =
i::Handle<i::ObjectTemplateInfo>::cast(struct_obj);
InitializeTemplate(obj, Consts::OBJECT_TEMPLATE);
int next_serial_number = 0;
if (!do_not_cache) {
next_serial_number = isolate->heap()->GetNextTemplateSerialNumber();
}
obj->set_serial_number(i::Smi::FromInt(next_serial_number));
if (!constructor.IsEmpty())
obj->set_constructor(*Utils::OpenHandle(*constructor));
obj->set_data(i::Smi::kZero);
return Utils::ToLocal(obj);
}
Local<ObjectTemplate> ObjectTemplate::New(
i::Isolate* isolate, v8::Local<FunctionTemplate> constructor) {
return ObjectTemplateNew(isolate, constructor, false);
}
MaybeLocal<ObjectTemplate> ObjectTemplate::FromSnapshot(Isolate* isolate,
size_t index) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::FixedArray* serialized_objects = i_isolate->heap()->serialized_objects();
int int_index = static_cast<int>(index);
if (int_index < serialized_objects->length()) {
i::Object* info = serialized_objects->get(int_index);
if (info->IsObjectTemplateInfo()) {
return Utils::ToLocal(
i::Handle<i::ObjectTemplateInfo>(i::ObjectTemplateInfo::cast(info)));
}
}
return Local<ObjectTemplate>();
}
// 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(isolate)) {
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;
}
template <typename Getter, typename Setter, typename Data, typename Template>
static void TemplateSetAccessor(Template* template_obj, v8::Local<Name> name,
Getter getter, Setter setter, Data data,
AccessControl settings,
PropertyAttribute attribute,
v8::Local<AccessorSignature> signature,
bool is_special_data_property,
bool replace_on_access) {
auto info = Utils::OpenHandle(template_obj);
auto isolate = info->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
i::Handle<i::AccessorInfo> accessor_info =
MakeAccessorInfo(isolate, name, getter, setter, data, settings, signature,
is_special_data_property, replace_on_access);
accessor_info->set_initial_property_attributes(
static_cast<i::PropertyAttributes>(attribute));
i::ApiNatives::AddNativeDataProperty(isolate, info, accessor_info);
}
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, true, false);
}
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, true, false);
}
void Template::SetLazyDataProperty(v8::Local<Name> name,
AccessorNameGetterCallback getter,
v8::Local<Value> data,
PropertyAttribute attribute) {
TemplateSetAccessor(
this, name, getter, static_cast<AccessorNameSetterCallback>(nullptr),
data, DEFAULT, attribute, Local<AccessorSignature>(), true, true);
}
void Template::SetIntrinsicDataProperty(Local<Name> name, Intrinsic intrinsic,
PropertyAttribute attribute) {
auto templ = Utils::OpenHandle(this);
i::Isolate* isolate = templ->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
i::ApiNatives::AddDataProperty(isolate, templ, Utils::OpenHandle(*name),
intrinsic,
static_cast<i::PropertyAttributes>(attribute));
}
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, i::FLAG_disable_old_api_accessors, false);
}
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, i::FLAG_disable_old_api_accessors, false);
}
template <typename Getter, typename Setter, typename Query, typename Descriptor,
typename Deleter, typename Enumerator, typename Definer>
static i::Handle<i::InterceptorInfo> CreateInterceptorInfo(
i::Isolate* isolate, Getter getter, Setter setter, Query query,
Descriptor descriptor, Deleter remover, Enumerator enumerator,
Definer definer, Local<Value> data, PropertyHandlerFlags flags) {
// Either intercept attributes or descriptor.
DCHECK(query == nullptr || descriptor == nullptr);
// Only use descriptor callback with definer callback.
DCHECK(query == nullptr || definer == nullptr);
auto obj = i::Handle<i::InterceptorInfo>::cast(
isolate->factory()->NewStruct(i::INTERCEPTOR_INFO_TYPE, i::TENURED));
obj->set_flags(0);
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 (descriptor != 0) SET_FIELD_WRAPPED(obj, set_descriptor, descriptor);
if (remover != 0) SET_FIELD_WRAPPED(obj, set_deleter, remover);
if (enumerator != 0) SET_FIELD_WRAPPED(obj, set_enumerator, enumerator);
if (definer != 0) SET_FIELD_WRAPPED(obj, set_definer, definer);
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));
return obj;
}
template <typename Getter, typename Setter, typename Query, typename Descriptor,
typename Deleter, typename Enumerator, typename Definer>
static i::Handle<i::InterceptorInfo> CreateNamedInterceptorInfo(
i::Isolate* isolate, Getter getter, Setter setter, Query query,
Descriptor descriptor, Deleter remover, Enumerator enumerator,
Definer definer, Local<Value> data, PropertyHandlerFlags flags) {
auto interceptor =
CreateInterceptorInfo(isolate, getter, setter, query, descriptor, remover,
enumerator, definer, data, flags);
interceptor->set_is_named(true);
return interceptor;
}
template <typename Getter, typename Setter, typename Query, typename Descriptor,
typename Deleter, typename Enumerator, typename Definer>
static i::Handle<i::InterceptorInfo> CreateIndexedInterceptorInfo(
i::Isolate* isolate, Getter getter, Setter setter, Query query,
Descriptor descriptor, Deleter remover, Enumerator enumerator,
Definer definer, Local<Value> data, PropertyHandlerFlags flags) {
auto interceptor =
CreateInterceptorInfo(isolate, getter, setter, query, descriptor, remover,
enumerator, definer, data, flags);
interceptor->set_is_named(false);
return interceptor;
}
template <typename Getter, typename Setter, typename Query, typename Descriptor,
typename Deleter, typename Enumerator, typename Definer>
static void ObjectTemplateSetNamedPropertyHandler(
ObjectTemplate* templ, Getter getter, Setter setter, Query query,
Descriptor descriptor, Deleter remover, Enumerator enumerator,
Definer definer, Local<Value> data, PropertyHandlerFlags flags) {
i::Isolate* isolate = Utils::OpenHandle(templ)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, templ);
EnsureNotInstantiated(cons, "ObjectTemplateSetNamedPropertyHandler");
auto obj =
CreateNamedInterceptorInfo(isolate, getter, setter, query, descriptor,
remover, enumerator, definer, data, flags);
cons->set_named_property_handler(*obj);
}
// TODO(cbruni) deprecate.
void ObjectTemplate::SetNamedPropertyHandler(
NamedPropertyGetterCallback getter, NamedPropertySetterCallback setter,
NamedPropertyQueryCallback query, NamedPropertyDeleterCallback remover,
NamedPropertyEnumeratorCallback enumerator, Local<Value> data) {
ObjectTemplateSetNamedPropertyHandler(
this, getter, setter, query, nullptr, remover, enumerator, nullptr, data,
PropertyHandlerFlags::kOnlyInterceptStrings);
}
void ObjectTemplate::SetHandler(
const NamedPropertyHandlerConfiguration& config) {
ObjectTemplateSetNamedPropertyHandler(
this, config.getter, config.setter, config.query, config.descriptor,
config.deleter, config.enumerator, config.definer, config.data,
config.flags);
}
void ObjectTemplate::MarkAsUndetectable() {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, this);
EnsureNotInstantiated(cons, "v8::ObjectTemplate::MarkAsUndetectable");
cons->set_undetectable(true);
}
void ObjectTemplate::SetAccessCheckCallback(AccessCheckCallback callback,
Local<Value> data) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, this);
EnsureNotInstantiated(cons, "v8::ObjectTemplate::SetAccessCheckCallback");
i::Handle<i::Struct> struct_info =
isolate->factory()->NewStruct(i::ACCESS_CHECK_INFO_TYPE, i::TENURED);
i::Handle<i::AccessCheckInfo> info =
i::Handle<i::AccessCheckInfo>::cast(struct_info);
SET_FIELD_WRAPPED(info, set_callback, callback);
info->set_named_interceptor(nullptr);
info->set_indexed_interceptor(nullptr);
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::SetAccessCheckCallbackAndHandler(
AccessCheckCallback callback,
const NamedPropertyHandlerConfiguration& named_handler,
const IndexedPropertyHandlerConfiguration& indexed_handler,
Local<Value> data) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, this);
EnsureNotInstantiated(
cons, "v8::ObjectTemplate::SetAccessCheckCallbackWithHandler");
i::Handle<i::Struct> struct_info =
isolate->factory()->NewStruct(i::ACCESS_CHECK_INFO_TYPE, i::TENURED);
i::Handle<i::AccessCheckInfo> info =
i::Handle<i::AccessCheckInfo>::cast(struct_info);
SET_FIELD_WRAPPED(info, set_callback, callback);
auto named_interceptor = CreateNamedInterceptorInfo(
isolate, named_handler.getter, named_handler.setter, named_handler.query,
named_handler.descriptor, named_handler.deleter, named_handler.enumerator,
named_handler.definer, named_handler.data, named_handler.flags);
info->set_named_interceptor(*named_interceptor);
auto indexed_interceptor = CreateIndexedInterceptorInfo(
isolate, indexed_handler.getter, indexed_handler.setter,
indexed_handler.query, indexed_handler.descriptor,
indexed_handler.deleter, indexed_handler.enumerator,
indexed_handler.definer, indexed_handler.data, indexed_handler.flags);
info->set_indexed_interceptor(*indexed_interceptor);
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_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
auto cons = EnsureConstructor(isolate, this);
EnsureNotInstantiated(cons, "v8::ObjectTemplate::SetHandler");
auto obj = CreateIndexedInterceptorInfo(
isolate, config.getter, config.setter, config.query, config.descriptor,
config.deleter, config.enumerator, config.definer, config.data,
config.flags);
cons->set_indexed_property_handler(*obj);
}
void ObjectTemplate::SetCallAsFunctionHandler(FunctionCallback callback,
Local<Value> data) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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::TUPLE3_TYPE, i::TENURED);
i::Handle<i::CallHandlerInfo> obj =
i::Handle<i::CallHandlerInfo>::cast(struct_obj);
SET_FIELD_WRAPPED(obj, set_callback, callback);
SET_FIELD_WRAPPED(obj, set_js_callback, obj->redirected_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 Utils::OpenHandle(this)->embedder_field_count();
}
void ObjectTemplate::SetInternalFieldCount(int value) {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
if (!Utils::ApiCheck(i::Smi::IsValid(value),
"v8::ObjectTemplate::SetInternalFieldCount()",
"Invalid embedder field count")) {
return;
}
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
if (value > 0) {
// The embedder 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_embedder_field_count(value);
}
bool ObjectTemplate::IsImmutableProto() {
return Utils::OpenHandle(this)->immutable_proto();
}
void ObjectTemplate::SetImmutableProto() {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
Utils::OpenHandle(this)->set_immutable_proto(true);
}
// --- 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::Isolate* isolate = obj->GetIsolate();
i::Handle<i::SharedFunctionInfo> function_info(
i::SharedFunctionInfo::cast(*obj), isolate);
i::Handle<i::JSFunction> function =
isolate->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, 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();
}
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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.Execute");
ENTER_V8(isolate, context, Script, Run, MaybeLocal<Value>(),
InternalEscapableScope);
i::HistogramTimerScope execute_timer(isolate->counters()->execute(), true);
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();
Local<Value> result;
has_pending_exception = !ToLocal<Value>(
i::Execution::Call(isolate, fun, receiver, 0, nullptr), &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<Value> ScriptOrModule::GetResourceName() {
i::Handle<i::Script> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::Handle<i::Object> val(obj->name(), isolate);
return ToApiHandle<Value>(val);
}
Local<PrimitiveArray> ScriptOrModule::GetHostDefinedOptions() {
i::Handle<i::Script> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::Handle<i::FixedArray> val(obj->host_defined_options(), isolate);
return ToApiHandle<PrimitiveArray>(val);
}
Local<UnboundScript> Script::GetUnboundScript() {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return ToApiHandle<UnboundScript>(
i::Handle<i::SharedFunctionInfo>(i::JSFunction::cast(*obj)->shared()));
}
// static
Local<PrimitiveArray> PrimitiveArray::New(Isolate* v8_isolate, int length) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
Utils::ApiCheck(length >= 0, "v8::PrimitiveArray::New",
"length must be equal or greater than zero");
i::Handle<i::FixedArray> array = isolate->factory()->NewFixedArray(length);
return ToApiHandle<PrimitiveArray>(array);
}
int PrimitiveArray::Length() const {
i::Handle<i::FixedArray> array = Utils::OpenHandle(this);
i::Isolate* isolate = array->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
return array->length();
}
void PrimitiveArray::Set(int index, Local<Primitive> item) {
i::Handle<i::FixedArray> array = Utils::OpenHandle(this);
i::Isolate* isolate = array->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
Utils::ApiCheck(index >= 0 && index < array->length(),
"v8::PrimitiveArray::Set",
"index must be greater than or equal to 0 and less than the "
"array length");
i::Handle<i::Object> i_item = Utils::OpenHandle(*item);
array->set(index, *i_item);
}
Local<Primitive> PrimitiveArray::Get(int index) {
i::Handle<i::FixedArray> array = Utils::OpenHandle(this);
i::Isolate* isolate = array->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
Utils::ApiCheck(index >= 0 && index < array->length(),
"v8::PrimitiveArray::Get",
"index must be greater than or equal to 0 and less than the "
"array length");
i::Handle<i::Object> i_item(array->get(index), isolate);
return ToApiHandle<Primitive>(i_item);
}
Module::Status Module::GetStatus() const {
i::Handle<i::Module> self = Utils::OpenHandle(this);
switch (self->status()) {
case i::Module::kUninstantiated:
case i::Module::kPreInstantiating:
return kUninstantiated;
case i::Module::kInstantiating:
return kInstantiating;
case i::Module::kInstantiated:
return kInstantiated;
case i::Module::kEvaluating:
return kEvaluating;
case i::Module::kEvaluated:
return kEvaluated;
case i::Module::kErrored:
return kErrored;
}
UNREACHABLE();
}
Local<Value> Module::GetException() const {
Utils::ApiCheck(GetStatus() == kErrored, "v8::Module::GetException",
"Module status must be kErrored");
i::Handle<i::Module> self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
return ToApiHandle<Value>(i::handle(self->GetException(), isolate));
}
int Module::GetModuleRequestsLength() const {
i::Handle<i::Module> self = Utils::OpenHandle(this);
return self->info()->module_requests()->length();
}
Local<String> Module::GetModuleRequest(int i) const {
CHECK_GE(i, 0);
i::Handle<i::Module> self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
i::Handle<i::FixedArray> module_requests(self->info()->module_requests(),
isolate);
CHECK_LT(i, module_requests->length());
return ToApiHandle<String>(i::handle(module_requests->get(i), isolate));
}
Location Module::GetModuleRequestLocation(int i) const {
CHECK_GE(i, 0);
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
i::HandleScope scope(isolate);
i::Handle<i::Module> self = Utils::OpenHandle(this);
i::Handle<i::FixedArray> module_request_positions(
self->info()->module_request_positions(), isolate);
CHECK_LT(i, module_request_positions->length());
int position = i::Smi::ToInt(module_request_positions->get(i));
i::Handle<i::Script> script(self->script(), isolate);
i::Script::PositionInfo info;
i::Script::GetPositionInfo(script, position, &info, i::Script::WITH_OFFSET);
return v8::Location(info.line, info.column);
}
Local<Value> Module::GetModuleNamespace() {
Utils::ApiCheck(
GetStatus() >= kInstantiated, "v8::Module::GetModuleNamespace",
"v8::Module::GetModuleNamespace must be used on an instantiated module");
i::Handle<i::Module> self = Utils::OpenHandle(this);
i::Handle<i::JSModuleNamespace> module_namespace =
i::Module::GetModuleNamespace(self);
return ToApiHandle<Value>(module_namespace);
}
int Module::GetIdentityHash() const { return Utils::OpenHandle(this)->hash(); }
Maybe<bool> Module::InstantiateModule(Local<Context> context,
Module::ResolveCallback callback) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Module, InstantiateModule, Nothing<bool>(),
i::HandleScope);
has_pending_exception =
!i::Module::Instantiate(Utils::OpenHandle(this), context, callback);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
MaybeLocal<Value> Module::Evaluate(Local<Context> context) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.Execute");
ENTER_V8(isolate, context, Module, Evaluate, MaybeLocal<Value>(),
InternalEscapableScope);
i::HistogramTimerScope execute_timer(isolate->counters()->execute(), true);
i::AggregatingHistogramTimerScope timer(isolate->counters()->compile_lazy());
i::TimerEventScope<i::TimerEventExecute> timer_scope(isolate);
i::Handle<i::Module> self = Utils::OpenHandle(this);
// It's an API error to call Evaluate before Instantiate.
CHECK_GE(self->status(), i::Module::kInstantiated);
Local<Value> result;
has_pending_exception = !ToLocal(i::Module::Evaluate(self), &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
MaybeLocal<UnboundScript> ScriptCompiler::CompileUnboundInternal(
Isolate* v8_isolate, Source* source, CompileOptions options,
NoCacheReason no_cache_reason) {
auto isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.ScriptCompiler");
ENTER_V8_NO_SCRIPT(isolate, v8_isolate->GetCurrentContext(), ScriptCompiler,
CompileUnbound, MaybeLocal<UnboundScript>(),
InternalEscapableScope);
bool produce_cache = options == kProduceParserCache ||
options == kProduceCodeCache ||
options == kProduceFullCodeCache;
// Don't try to produce any kind of cache when the debugger is loaded.
if (isolate->debug()->is_loaded() && produce_cache) {
options = kNoCompileOptions;
}
i::ScriptData* script_data = nullptr;
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;
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.CompileScript");
i::MaybeHandle<i::Object> name_obj;
i::MaybeHandle<i::Object> source_map_url;
i::MaybeHandle<i::FixedArray> host_defined_options =
isolate->factory()->empty_fixed_array();
int line_offset = 0;
int column_offset = 0;
if (!source->resource_name.IsEmpty()) {
name_obj = Utils::OpenHandle(*(source->resource_name));
}
if (!source->host_defined_options.IsEmpty()) {
host_defined_options = Utils::OpenHandle(*(source->host_defined_options));
}
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));
}
i::MaybeHandle<i::SharedFunctionInfo> maybe_function_info =
i::Compiler::GetSharedFunctionInfoForScript(
str, name_obj, line_offset, column_offset, source->resource_options,
source_map_url, isolate->native_context(), nullptr, &script_data,
options, no_cache_reason, i::NOT_NATIVES_CODE, host_defined_options);
has_pending_exception = !maybe_function_info.ToHandle(&result);
if (has_pending_exception && script_data != nullptr) {
// 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 = nullptr;
}
RETURN_ON_FAILED_EXECUTION(UnboundScript);
if (produce_cache && script_data != nullptr) {
// 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,
NoCacheReason no_cache_reason) {
Utils::ApiCheck(
!source->GetResourceOptions().IsModule(),
"v8::ScriptCompiler::CompileUnboundScript",
"v8::ScriptCompiler::CompileModule must be used to compile modules");
return CompileUnboundInternal(v8_isolate, source, options, no_cache_reason);
}
MaybeLocal<Script> ScriptCompiler::Compile(Local<Context> context,
Source* source,
CompileOptions options,
NoCacheReason no_cache_reason) {
Utils::ApiCheck(
!source->GetResourceOptions().IsModule(), "v8::ScriptCompiler::Compile",
"v8::ScriptCompiler::CompileModule must be used to compile modules");
auto isolate = context->GetIsolate();
auto maybe =
CompileUnboundInternal(isolate, source, options, no_cache_reason);
Local<UnboundScript> result;
if (!maybe.ToLocal(&result)) return MaybeLocal<Script>();
v8::Context::Scope scope(context);
return result->BindToCurrentContext();
}
MaybeLocal<Module> ScriptCompiler::CompileModule(Isolate* isolate,
Source* source) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
Utils::ApiCheck(source->GetResourceOptions().IsModule(),
"v8::ScriptCompiler::CompileModule",
"Invalid ScriptOrigin: is_module must be true");
auto maybe = CompileUnboundInternal(isolate, source, kNoCompileOptions,
kNoCacheBecauseModule);
Local<UnboundScript> unbound;
if (!maybe.ToLocal(&unbound)) return MaybeLocal<Module>();
i::Handle<i::SharedFunctionInfo> shared = Utils::OpenHandle(*unbound);
return ToApiHandle<Module>(i_isolate->factory()->NewModule(shared));
}
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 == nullptr) 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, ScriptCompiler, CompileFunctionInContext,
Function);
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.ScriptCompiler");
i::Handle<i::Context> context = Utils::OpenHandle(*v8_context);
i::Handle<i::SharedFunctionInfo> outer_info(context->closure()->shared(),
isolate);
i::Handle<i::JSFunction> fun;
i::Handle<i::FixedArray> arguments_list =
isolate->factory()->NewFixedArray(static_cast<int>(arguments_count));
for (int i = 0; i < static_cast<int>(arguments_count); i++) {
IsIdentifierHelper helper;
i::Handle<i::String> argument = Utils::OpenHandle(*arguments[i]);
if (!helper.Check(*argument)) return Local<Function>();
arguments_list->set(i, *argument);
}
for (size_t i = 0; i < context_extension_count; ++i) {
i::Handle<i::JSReceiver> extension =
Utils::OpenHandle(*context_extensions[i]);
if (!extension->IsJSObject()) return Local<Function>();
i::Handle<i::JSFunction> closure(context->closure(), isolate);
context = isolate->factory()->NewWithContext(
closure, context,
i::ScopeInfo::CreateForWithScope(
isolate, context->IsNativeContext()
? i::Handle<i::ScopeInfo>::null()
: i::Handle<i::ScopeInfo>(context->scope_info())),
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> result;
has_pending_exception =
!i::Compiler::GetWrappedFunction(
Utils::OpenHandle(*source->source_string), arguments_list, context,
line_offset, column_offset, name_obj, source->resource_options)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Function);
RETURN_ESCAPED(Utils::CallableToLocal(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) {
if (!i::FLAG_script_streaming) {
return nullptr;
}
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, ScriptCompiler, Compile, Script);
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.ScriptCompiler");
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 (isolate->NeedsSourcePositionsForProfiling()) {
i::Script::InitLineEnds(script);
}
if (!origin.ResourceName().IsEmpty()) {
script->set_name(*Utils::OpenHandle(*(origin.ResourceName())));
}
if (!origin.HostDefinedOptions().IsEmpty()) {
script->set_host_defined_options(
*Utils::OpenHandle(*(origin.HostDefinedOptions())));
}
if (!origin.ResourceLineOffset().IsEmpty()) {
script->set_line_offset(
static_cast<int>(origin.ResourceLineOffset()->Value()));
}
if (!origin.ResourceColumnOffset().IsEmpty()) {
script->set_column_offset(
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->parser->UpdateStatistics(isolate, script);
source->info->UpdateBackgroundParseStatisticsOnMainThread(isolate);
source->parser->HandleSourceURLComments(isolate, script);
i::Handle<i::SharedFunctionInfo> result;
if (source->info->literal() == nullptr) {
// Parsing has failed - report error messages.
source->info->pending_error_handler()->ReportErrors(
isolate, script, source->info->ast_value_factory());
} else {
// Parsing has succeeded - finalize compile.
if (i::FLAG_background_compile) {
result = i::Compiler::GetSharedFunctionInfoForBackgroundCompile(
script, source->info.get(), str->length(),
source->outer_function_job.get(), &source->inner_function_jobs);
} else {
result = i::Compiler::GetSharedFunctionInfoForStreamedScript(
script, source->info.get(), str->length());
}
}
has_pending_exception = result.is_null();
if (has_pending_exception) isolate->ReportPendingMessages();
source->Release();
RETURN_ON_FAILED_EXECUTION(Script);
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);
}
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())));
}
ScriptCompiler::CachedData* ScriptCompiler::CreateCodeCache(
Local<UnboundScript> unbound_script, Local<String> source) {
i::Handle<i::SharedFunctionInfo> shared =
i::Handle<i::SharedFunctionInfo>::cast(
Utils::OpenHandle(*unbound_script));
i::Isolate* isolate = shared->GetIsolate();
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.Execute");
base::ElapsedTimer timer;
if (i::FLAG_profile_deserialization) {
timer.Start();
}
i::HistogramTimerScope histogram_timer(
isolate->counters()->compile_serialize());
i::RuntimeCallTimerScope runtimeTimer(
isolate, i::RuntimeCallCounterId::kCompileSerialize);
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.CompileSerialize");
DCHECK(shared->is_toplevel());
i::Handle<i::Script> script(i::Script::cast(shared->script()));
// TODO(7110): Enable serialization of Asm modules once the AsmWasmData is
// context independent.
if (script->ContainsAsmModule()) return nullptr;
if (isolate->debug()->is_loaded()) return nullptr;
i::ScriptData* script_data =
i::CodeSerializer::Serialize(isolate, shared, Utils::OpenHandle(*source));
CachedData* result = new CachedData(
script_data->data(), script_data->length(), CachedData::BufferOwned);
script_data->ReleaseDataOwnership();
delete script_data;
if (i::FLAG_profile_deserialization) {
i::PrintF("[Serializing took %0.3f ms]\n",
timer.Elapsed().InMillisecondsF());
}
return result;
}
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(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*>(i::SimulatorStack::RegisterCTryCatch(
isolate_, i::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);
i::SimulatorStack::UnregisterCTryCatch(isolate_);
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);
i::SimulatorStack::UnregisterCTryCatch(isolate_);
}
}
void* v8::TryCatch::operator new(size_t) { base::OS::Abort(); }
void* v8::TryCatch::operator new[](size_t) { base::OS::Abort(); }
void v8::TryCatch::operator delete(void*, size_t) { base::OS::Abort(); }
void v8::TryCatch::operator delete[](void*, size_t) { base::OS::Abort(); }
bool v8::TryCatch::HasCaught() const {
return !reinterpret_cast<i::Object*>(exception_)->IsTheHole(isolate_);
}
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, 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.IsNothing();
RETURN_ON_FAILED_EXECUTION(Value);
if (!maybe.FromJust()) return v8::Local<Value>();
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(i::JSReceiver::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(isolate_));
if (HasCaught() && !message->IsTheHole(isolate_)) {
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;
}
bool v8::TryCatch::IsVerbose() const { return is_verbose_; }
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_NO_SCRIPT_NO_EXCEPTION(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();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
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_NO_SCRIPT_NO_EXCEPTION(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->IsFixedArray()) return v8::Local<v8::StackTrace>();
auto stackTrace = i::Handle<i::FixedArray>::cast(stackFramesObj);
return scope.Escape(Utils::StackTraceToLocal(stackTrace));
}
Maybe<int> Message::GetLineNumber(Local<Context> context) const {
auto self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
EscapableHandleScope handle_scope(reinterpret_cast<Isolate*>(isolate));
auto msg = i::Handle<i::JSMessageObject>::cast(self);
return Just(msg->GetLineNumber());
}
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();
}
int Message::ErrorLevel() const {
auto self = Utils::OpenHandle(this);
return self->error_level();
}
Maybe<int> Message::GetStartColumn(Local<Context> context) const {
auto self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
EscapableHandleScope handle_scope(reinterpret_cast<Isolate*>(isolate));
auto msg = i::Handle<i::JSMessageObject>::cast(self);
return Just(msg->GetColumnNumber());
}
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);
i::Isolate* isolate = self->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
EscapableHandleScope handle_scope(reinterpret_cast<Isolate*>(isolate));
auto msg = i::Handle<i::JSMessageObject>::cast(self);
const int column_number = msg->GetColumnNumber();
if (column_number == -1) return Just(-1);
const int start = self->start_position();
const int end = self->end_position();
return Just(column_number + (end - start));
}
bool Message::IsSharedCrossOrigin() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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 {
auto self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
EscapableHandleScope handle_scope(reinterpret_cast<Isolate*>(isolate));
auto msg = i::Handle<i::JSMessageObject>::cast(self);
RETURN_ESCAPED(Utils::ToLocal(msg->GetSourceLine()));
}
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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(isolate);
EscapableHandleScope scope(reinterpret_cast<Isolate*>(isolate));
auto obj = handle(Utils::OpenHandle(this)->get(index), isolate);
auto info = i::Handle<i::StackFrameInfo>::cast(obj);
return scope.Escape(Utils::StackFrameToLocal(info));
}
int StackTrace::GetFrameCount() const {
return Utils::OpenHandle(this)->length();
}
Local<StackTrace> StackTrace::CurrentStackTrace(
Isolate* isolate,
int frame_limit,
StackTraceOptions options) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::Handle<i::FixedArray> stackTrace =
i_isolate->CaptureCurrentStackTrace(frame_limit, options);
return Utils::StackTraceToLocal(stackTrace);
}
// --- S t a c k F r a m e ---
int StackFrame::GetLineNumber() const {
int v = Utils::OpenHandle(this)->line_number();
return v ? v : Message::kNoLineNumberInfo;
}
int StackFrame::GetColumn() const {
int v = Utils::OpenHandle(this)->column_number();
return v ? v : Message::kNoLineNumberInfo;
}
int StackFrame::GetScriptId() const {
int v = Utils::OpenHandle(this)->script_id();
return v ? v : Message::kNoScriptIdInfo;
}
Local<String> StackFrame::GetScriptName() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
EscapableHandleScope scope(reinterpret_cast<Isolate*>(isolate));
i::Handle<i::StackFrameInfo> self = Utils::OpenHandle(this);
i::Handle<i::Object> obj(self->script_name(), isolate);
return obj->IsString()
? scope.Escape(Local<String>::Cast(Utils::ToLocal(obj)))
: Local<String>();
}
Local<String> StackFrame::GetScriptNameOrSourceURL() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
EscapableHandleScope scope(reinterpret_cast<Isolate*>(isolate));
i::Handle<i::StackFrameInfo> self = Utils::OpenHandle(this);
i::Handle<i::Object> obj(self->script_name_or_source_url(), isolate);
return obj->IsString()
? scope.Escape(Local<String>::Cast(Utils::ToLocal(obj)))
: Local<String>();
}
Local<String> StackFrame::GetFunctionName() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
EscapableHandleScope scope(reinterpret_cast<Isolate*>(isolate));
i::Handle<i::StackFrameInfo> self = Utils::OpenHandle(this);
i::Handle<i::Object> obj(self->function_name(), isolate);
return obj->IsString()
? scope.Escape(Local<String>::Cast(Utils::ToLocal(obj)))
: Local<String>();
}
bool StackFrame::IsEval() const { return Utils::OpenHandle(this)->is_eval(); }
bool StackFrame::IsConstructor() const {
return Utils::OpenHandle(this)->is_constructor();
}
bool StackFrame::IsWasm() const { return Utils::OpenHandle(this)->is_wasm(); }
// --- J S O N ---
MaybeLocal<Value> JSON::Parse(Isolate* v8_isolate, Local<String> json_string) {
PREPARE_FOR_EXECUTION(v8_isolate->GetCurrentContext(), JSON, Parse, Value);
i::Handle<i::String> string = Utils::OpenHandle(*json_string);
i::Handle<i::String> source = i::String::Flatten(string);
i::Handle<i::Object> undefined = isolate->factory()->undefined_value();
auto maybe = source->IsSeqOneByteString()
? i::JsonParser<true>::Parse(isolate, source, undefined)
: i::JsonParser<false>::Parse(isolate, source, undefined);
Local<Value> result;
has_pending_exception = !ToLocal<Value>(maybe, &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
MaybeLocal<Value> JSON::Parse(Local<Context> context,
Local<String> json_string) {
PREPARE_FOR_EXECUTION(context, JSON, Parse, Value);
i::Handle<i::String> string = Utils::OpenHandle(*json_string);
i::Handle<i::String> source = i::String::Flatten(string);
i::Handle<i::Object> undefined = isolate->factory()->undefined_value();
auto maybe = source->IsSeqOneByteString()
? i::JsonParser<true>::Parse(isolate, source, undefined)
: i::JsonParser<false>::Parse(isolate, source, undefined);
Local<Value> result;
has_pending_exception = !ToLocal<Value>(maybe, &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
MaybeLocal<String> JSON::Stringify(Local<Context> context,
Local<Value> json_object,
Local<String> gap) {
PREPARE_FOR_EXECUTION(context, JSON, Stringify, String);
i::Handle<i::Object> object = Utils::OpenHandle(*json_object);
i::Handle<i::Object> replacer = isolate->factory()->undefined_value();
i::Handle<i::String> gap_string = gap.IsEmpty()
? isolate->factory()->empty_string()
: Utils::OpenHandle(*gap);
i::Handle<i::Object> maybe;
has_pending_exception = !i::JsonStringifier(isolate)
.Stringify(object, replacer, gap_string)
.ToHandle(&maybe);
RETURN_ON_FAILED_EXECUTION(String);
Local<String> result;
has_pending_exception =
!ToLocal<String>(i::Object::ToString(isolate, maybe), &result);
RETURN_ON_FAILED_EXECUTION(String);
RETURN_ESCAPED(result);
}
// --- V a l u e S e r i a l i z a t i o n ---
Maybe<bool> ValueSerializer::Delegate::WriteHostObject(Isolate* v8_isolate,
Local<Object> object) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
isolate->ScheduleThrow(*isolate->factory()->NewError(
isolate->error_function(), i::MessageTemplate::kDataCloneError,
Utils::OpenHandle(*object)));
return Nothing<bool>();
}
Maybe<uint32_t> ValueSerializer::Delegate::GetSharedArrayBufferId(
Isolate* v8_isolate, Local<SharedArrayBuffer> shared_array_buffer) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
isolate->ScheduleThrow(*isolate->factory()->NewError(
isolate->error_function(), i::MessageTemplate::kDataCloneError,
Utils::OpenHandle(*shared_array_buffer)));
return Nothing<uint32_t>();
}
Maybe<uint32_t> ValueSerializer::Delegate::GetWasmModuleTransferId(
Isolate* v8_isolate, Local<WasmCompiledModule> module) {
return Nothing<uint32_t>();
}
void* ValueSerializer::Delegate::ReallocateBufferMemory(void* old_buffer,
size_t size,
size_t* actual_size) {
*actual_size = size;
return realloc(old_buffer, size);
}
void ValueSerializer::Delegate::FreeBufferMemory(void* buffer) {
return free(buffer);
}
struct ValueSerializer::PrivateData {
explicit PrivateData(i::Isolate* i, ValueSerializer::Delegate* delegate)
: isolate(i), serializer(i, delegate) {}
i::Isolate* isolate;
i::ValueSerializer serializer;
};
ValueSerializer::ValueSerializer(Isolate* isolate)
: ValueSerializer(isolate, nullptr) {}
ValueSerializer::ValueSerializer(Isolate* isolate, Delegate* delegate)
: private_(
new PrivateData(reinterpret_cast<i::Isolate*>(isolate), delegate)) {}
ValueSerializer::~ValueSerializer() { delete private_; }
void ValueSerializer::WriteHeader() { private_->serializer.WriteHeader(); }
void ValueSerializer::SetTreatArrayBufferViewsAsHostObjects(bool mode) {
private_->serializer.SetTreatArrayBufferViewsAsHostObjects(mode);
}
Maybe<bool> ValueSerializer::WriteValue(Local<Context> context,
Local<Value> value) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, ValueSerializer, WriteValue, Nothing<bool>(),
i::HandleScope);
i::Handle<i::Object> object = Utils::OpenHandle(*value);
Maybe<bool> result = private_->serializer.WriteObject(object);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
std::vector<uint8_t> ValueSerializer::ReleaseBuffer() {
return private_->serializer.ReleaseBuffer();
}
std::pair<uint8_t*, size_t> ValueSerializer::Release() {
return private_->serializer.Release();
}
void ValueSerializer::TransferArrayBuffer(uint32_t transfer_id,
Local<ArrayBuffer> array_buffer) {
private_->serializer.TransferArrayBuffer(transfer_id,
Utils::OpenHandle(*array_buffer));
}
void ValueSerializer::TransferSharedArrayBuffer(
uint32_t transfer_id, Local<SharedArrayBuffer> shared_array_buffer) {
private_->serializer.TransferArrayBuffer(
transfer_id, Utils::OpenHandle(*shared_array_buffer));
}
void ValueSerializer::WriteUint32(uint32_t value) {
private_->serializer.WriteUint32(value);
}
void ValueSerializer::WriteUint64(uint64_t value) {
private_->serializer.WriteUint64(value);
}
void ValueSerializer::WriteDouble(double value) {
private_->serializer.WriteDouble(value);
}
void ValueSerializer::WriteRawBytes(const void* source, size_t length) {
private_->serializer.WriteRawBytes(source, length);
}
MaybeLocal<Object> ValueDeserializer::Delegate::ReadHostObject(
Isolate* v8_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
isolate->ScheduleThrow(*isolate->factory()->NewError(
isolate->error_function(),
i::MessageTemplate::kDataCloneDeserializationError));
return MaybeLocal<Object>();
}
MaybeLocal<WasmCompiledModule> ValueDeserializer::Delegate::GetWasmModuleFromId(
Isolate* v8_isolate, uint32_t id) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
isolate->ScheduleThrow(*isolate->factory()->NewError(
isolate->error_function(),
i::MessageTemplate::kDataCloneDeserializationError));
return MaybeLocal<WasmCompiledModule>();
}
struct ValueDeserializer::PrivateData {
PrivateData(i::Isolate* i, i::Vector<const uint8_t> data, Delegate* delegate)
: isolate(i), deserializer(i, data, delegate) {}
i::Isolate* isolate;
i::ValueDeserializer deserializer;
bool has_aborted = false;
bool supports_legacy_wire_format = false;
};
ValueDeserializer::ValueDeserializer(Isolate* isolate, const uint8_t* data,
size_t size)
: ValueDeserializer(isolate, data, size, nullptr) {}
ValueDeserializer::ValueDeserializer(Isolate* isolate, const uint8_t* data,
size_t size, Delegate* delegate) {
if (base::IsValueInRangeForNumericType<int>(size)) {
private_ = new PrivateData(
reinterpret_cast<i::Isolate*>(isolate),
i::Vector<const uint8_t>(data, static_cast<int>(size)), delegate);
} else {
private_ = new PrivateData(reinterpret_cast<i::Isolate*>(isolate),
i::Vector<const uint8_t>(nullptr, 0), nullptr);
private_->has_aborted = true;
}
}
ValueDeserializer::~ValueDeserializer() { delete private_; }
Maybe<bool> ValueDeserializer::ReadHeader(Local<Context> context) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8_NO_SCRIPT(isolate, context, ValueDeserializer, ReadHeader,
Nothing<bool>(), i::HandleScope);
// We could have aborted during the constructor.
// If so, ReadHeader is where we report it.
if (private_->has_aborted) {
isolate->Throw(*isolate->factory()->NewError(
i::MessageTemplate::kDataCloneDeserializationError));
has_pending_exception = true;
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
}
bool read_header = false;
has_pending_exception = !private_->deserializer.ReadHeader().To(&read_header);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
DCHECK(read_header);
static const uint32_t kMinimumNonLegacyVersion = 13;
if (GetWireFormatVersion() < kMinimumNonLegacyVersion &&
!private_->supports_legacy_wire_format) {
isolate->Throw(*isolate->factory()->NewError(
i::MessageTemplate::kDataCloneDeserializationVersionError));
has_pending_exception = true;
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
}
return Just(true);
}
void ValueDeserializer::SetSupportsLegacyWireFormat(
bool supports_legacy_wire_format) {
private_->supports_legacy_wire_format = supports_legacy_wire_format;
}
void ValueDeserializer::SetExpectInlineWasm(bool expect_inline_wasm) {
private_->deserializer.set_expect_inline_wasm(expect_inline_wasm);
}
uint32_t ValueDeserializer::GetWireFormatVersion() const {
CHECK(!private_->has_aborted);
return private_->deserializer.GetWireFormatVersion();
}
MaybeLocal<Value> ValueDeserializer::ReadValue(Local<Context> context) {
CHECK(!private_->has_aborted);
PREPARE_FOR_EXECUTION(context, ValueDeserializer, ReadValue, Value);
i::MaybeHandle<i::Object> result;
if (GetWireFormatVersion() > 0) {
result = private_->deserializer.ReadObject();
} else {
result =
private_->deserializer.ReadObjectUsingEntireBufferForLegacyFormat();
}
Local<Value> value;
has_pending_exception = !ToLocal(result, &value);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(value);
}
void ValueDeserializer::TransferArrayBuffer(uint32_t transfer_id,
Local<ArrayBuffer> array_buffer) {
CHECK(!private_->has_aborted);
private_->deserializer.TransferArrayBuffer(transfer_id,
Utils::OpenHandle(*array_buffer));
}
void ValueDeserializer::TransferSharedArrayBuffer(
uint32_t transfer_id, Local<SharedArrayBuffer> shared_array_buffer) {
CHECK(!private_->has_aborted);
private_->deserializer.TransferArrayBuffer(
transfer_id, Utils::OpenHandle(*shared_array_buffer));
}
bool ValueDeserializer::ReadUint32(uint32_t* value) {
return private_->deserializer.ReadUint32(value);
}
bool ValueDeserializer::ReadUint64(uint64_t* value) {
return private_->deserializer.ReadUint64(value);
}
bool ValueDeserializer::ReadDouble(double* value) {
return private_->deserializer.ReadDouble(value);
}
bool ValueDeserializer::ReadRawBytes(size_t length, const void** data) {
return private_->deserializer.ReadRawBytes(length, data);
}
// --- D a t a ---
bool Value::FullIsUndefined() const {
i::Handle<i::Object> object = Utils::OpenHandle(this);
bool result = false;
if (!object->IsSmi()) {
result = object->IsUndefined(i::HeapObject::cast(*object)->GetIsolate());
}
DCHECK_EQ(result, QuickIsUndefined());
return result;
}
bool Value::FullIsNull() const {
i::Handle<i::Object> object = Utils::OpenHandle(this);
bool result = false;
if (!object->IsSmi()) {
result = object->IsNull(i::HeapObject::cast(*object)->GetIsolate());
}
DCHECK_EQ(result, QuickIsNull());
return result;
}
bool Value::IsTrue() const {
i::Handle<i::Object> object = Utils::OpenHandle(this);
if (object->IsSmi()) return false;
return object->IsTrue(i::HeapObject::cast(*object)->GetIsolate());
}
bool Value::IsFalse() const {
i::Handle<i::Object> object = Utils::OpenHandle(this);
if (object->IsSmi()) return false;
return object->IsFalse(i::HeapObject::cast(*object)->GetIsolate());
}
bool Value::IsFunction() const { return Utils::OpenHandle(this)->IsCallable(); }
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)->IsJSReceiver(); }
bool Value::IsNumber() const {
return Utils::OpenHandle(this)->IsNumber();
}
bool Value::IsProxy() const { return Utils::OpenHandle(this)->IsJSProxy(); }
bool Value::IsWebAssemblyCompiledModule() 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);
return js_obj->GetIsolate()->native_context()->wasm_module_constructor() ==
js_obj->map()->GetConstructor();
}
#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::ToInt(*obj) >= 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 {
return Utils::OpenHandle(this)->IsJSError();
}
bool Value::IsRegExp() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
return obj->IsJSRegExp();
}
bool Value::IsAsyncFunction() 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 i::IsAsyncFunction(func->shared()->kind());
}
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 i::IsGeneratorFunction(func->shared()->kind());
}
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();
}
bool Value::IsPromise() const { return Utils::OpenHandle(this)->IsJSPromise(); }
MaybeLocal<String> Value::ToString(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsString()) return ToApiHandle<String>(obj);
PREPARE_FOR_EXECUTION(context, Object, 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 {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsString()) return ToApiHandle<String>(obj);
PREPARE_FOR_EXECUTION(context, Object, ToDetailString, String);
Local<String> result =
Utils::ToLocal(i::Object::NoSideEffectsToString(isolate, obj));
RETURN_ON_FAILED_EXECUTION(String);
RETURN_ESCAPED(result);
}
MaybeLocal<Object> Value::ToObject(Local<Context> context) const {
auto obj = Utils::OpenHandle(this);
if (obj->IsJSReceiver()) return ToApiHandle<Object>(obj);
PREPARE_FOR_EXECUTION(context, Object, ToObject, Object);
Local<Object> result;
has_pending_exception =
!ToLocal<Object>(i::Object::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, Object, ToNumber, Number);
Local<Number> result;
has_pending_exception = !ToLocal<Number>(i::Object::ToNumber(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, Object, ToInteger, Integer);
Local<Integer> result;
has_pending_exception =
!ToLocal<Integer>(i::Object::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, Object, ToInt32, Int32);
has_pending_exception =
!ToLocal<Int32>(i::Object::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, Object, ToUint32, Uint32);
has_pending_exception =
!ToLocal<Uint32>(i::Object::ToUint32(isolate, obj), &result);
RETURN_ON_FAILED_EXECUTION(Uint32);
RETURN_ESCAPED(result);
}
void i::Internals::CheckInitializedImpl(v8::Isolate* external_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external_isolate);
Utils::ApiCheck(isolate != nullptr && !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->IsJSReceiver(), "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->IsCallable(), "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::Private::CheckCast(v8::Data* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsSymbol() &&
i::Handle<i::Symbol>::cast(obj)->is_private(),
"v8::Private::Cast",
"Could not convert to private");
}
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::Proxy::CheckCast(Value* that) {
Utils::ApiCheck(that->IsProxy(), "v8::Proxy::Cast",
"Could not convert to proxy");
}
void v8::WasmCompiledModule::CheckCast(Value* that) {
Utils::ApiCheck(that->IsWebAssemblyCompiledModule(),
"v8::WasmCompiledModule::Cast",
"Could not convert to wasm compiled module");
}
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 = nullptr;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != nullptr &&
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 = nullptr;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != nullptr &&
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 = nullptr;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != nullptr &&
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 = nullptr;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(isolate != nullptr &&
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 = nullptr;
if (obj->IsHeapObject()) isolate = i::HeapObject::cast(*obj)->GetIsolate();
Utils::ApiCheck(
isolate != nullptr &&
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());
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Value, NumberValue, Nothing<double>(),
i::HandleScope);
i::Handle<i::Object> num;
has_pending_exception = !i::Object::ToNumber(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);
if (obj->IsNumber()) {
return Just(NumberToInt64(*obj));
}
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Value, IntegerValue, Nothing<int64_t>(),
i::HandleScope);
i::Handle<i::Object> num;
has_pending_exception = !i::Object::ToInteger(isolate, obj).ToHandle(&num);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(int64_t);
return Just(NumberToInt64(*num));
}
int64_t Value::IntegerValue() const {
auto obj = Utils::OpenHandle(this);
if (obj->IsNumber()) {
if (obj->IsSmi()) {
return i::Smi::ToInt(*obj);
} 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));
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Value, Int32Value, Nothing<int32_t>(),
i::HandleScope);
i::Handle<i::Object> num;
has_pending_exception = !i::Object::ToInt32(isolate, obj).ToHandle(&num);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(int32_t);
return Just(num->IsSmi() ? i::Smi::ToInt(*num)
: 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));
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Value, Uint32Value, Nothing<uint32_t>(),
i::HandleScope);
i::Handle<i::Object> num;
has_pending_exception = !i::Object::ToUint32(isolate, obj).ToHandle(&num);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(uint32_t);
return Just(num->IsSmi() ? static_cast<uint32_t>(i::Smi::ToInt(*num))
: 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::ToInt(*self) >= 0) return Utils::Uint32ToLocal(self);
return Local<Uint32>();
}
PREPARE_FOR_EXECUTION(context, Object, 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>();
}
Maybe<bool> Value::Equals(Local<Context> context, Local<Value> that) const {
auto self = Utils::OpenHandle(this);
auto other = Utils::OpenHandle(*that);
return i::Object::Equals(self, other);
}
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);
}
Local<String> Value::TypeOf(v8::Isolate* external_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
LOG_API(isolate, Value, TypeOf);
return Utils::ToLocal(i::Object::TypeOf(isolate, Utils::OpenHandle(this)));
}
Maybe<bool> Value::InstanceOf(v8::Local<v8::Context> context,
v8::Local<v8::Object> object) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Value, InstanceOf, Nothing<bool>(),
i::HandleScope);
auto left = Utils::OpenHandle(this);
auto right = Utils::OpenHandle(*object);
i::Handle<i::Object> result;
has_pending_exception =
!i::Object::InstanceOf(isolate, left, right).ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue(isolate));
}
Maybe<bool> v8::Object::Set(v8::Local<v8::Context> context,
v8::Local<Value> key, v8::Local<Value> value) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, Set, Nothing<bool>(), i::HandleScope);
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::LanguageMode::kSloppy)
.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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, Set, Nothing<bool>(), i::HandleScope);
auto self = Utils::OpenHandle(this);
auto value_obj = Utils::OpenHandle(*value);
has_pending_exception = i::Object::SetElement(isolate, self, index, value_obj,
i::LanguageMode::kSloppy)
.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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, CreateDataProperty, Nothing<bool>(),
i::HandleScope);
i::Handle<i::JSReceiver> 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, self, i::LookupIterator::OWN);
Maybe<bool> result =
i::JSReceiver::CreateDataProperty(&it, value_obj, i::kDontThrow);
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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, CreateDataProperty, Nothing<bool>(),
i::HandleScope);
i::Handle<i::JSReceiver> self = Utils::OpenHandle(this);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
i::LookupIterator it(isolate, self, index, self, i::LookupIterator::OWN);
Maybe<bool> result =
i::JSReceiver::CreateDataProperty(&it, value_obj, i::kDontThrow);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
struct v8::PropertyDescriptor::PrivateData {
PrivateData() : desc() {}
i::PropertyDescriptor desc;
};
v8::PropertyDescriptor::PropertyDescriptor() : private_(new PrivateData()) {}
// DataDescriptor
v8::PropertyDescriptor::PropertyDescriptor(v8::Local<v8::Value> value)
: private_(new PrivateData()) {
private_->desc.set_value(Utils::OpenHandle(*value, true));
}
// DataDescriptor with writable field
v8::PropertyDescriptor::PropertyDescriptor(v8::Local<v8::Value> value,
bool writable)
: private_(new PrivateData()) {
private_->desc.set_value(Utils::OpenHandle(*value, true));
private_->desc.set_writable(writable);
}
// AccessorDescriptor
v8::PropertyDescriptor::PropertyDescriptor(v8::Local<v8::Value> get,
v8::Local<v8::Value> set)
: private_(new PrivateData()) {
DCHECK(get.IsEmpty() || get->IsUndefined() || get->IsFunction());
DCHECK(set.IsEmpty() || set->IsUndefined() || set->IsFunction());
private_->desc.set_get(Utils::OpenHandle(*get, true));
private_->desc.set_set(Utils::OpenHandle(*set, true));
}
v8::PropertyDescriptor::~PropertyDescriptor() { delete private_; }
v8::Local<Value> v8::PropertyDescriptor::value() const {
DCHECK(private_->desc.has_value());
return Utils::ToLocal(private_->desc.value());
}
v8::Local<Value> v8::PropertyDescriptor::get() const {
DCHECK(private_->desc.has_get());
return Utils::ToLocal(private_->desc.get());
}
v8::Local<Value> v8::PropertyDescriptor::set() const {
DCHECK(private_->desc.has_set());
return Utils::ToLocal(private_->desc.set());
}
bool v8::PropertyDescriptor::has_value() const {
return private_->desc.has_value();
}
bool v8::PropertyDescriptor::has_get() const {
return private_->desc.has_get();
}
bool v8::PropertyDescriptor::has_set() const {
return private_->desc.has_set();
}
bool v8::PropertyDescriptor::writable() const {
DCHECK(private_->desc.has_writable());
return private_->desc.writable();
}
bool v8::PropertyDescriptor::has_writable() const {
return private_->desc.has_writable();
}
void v8::PropertyDescriptor::set_enumerable(bool enumerable) {
private_->desc.set_enumerable(enumerable);
}
bool v8::PropertyDescriptor::enumerable() const {
DCHECK(private_->desc.has_enumerable());
return private_->desc.enumerable();
}
bool v8::PropertyDescriptor::has_enumerable() const {
return private_->desc.has_enumerable();
}
void v8::PropertyDescriptor::set_configurable(bool configurable) {
private_->desc.set_configurable(configurable);
}
bool v8::PropertyDescriptor::configurable() const {
DCHECK(private_->desc.has_configurable());
return private_->desc.configurable();
}
bool v8::PropertyDescriptor::has_configurable() const {
return private_->desc.has_configurable();
}
Maybe<bool> v8::Object::DefineOwnProperty(v8::Local<v8::Context> context,
v8::Local<Name> key,
v8::Local<Value> value,
v8::PropertyAttribute attributes) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
i::Handle<i::JSReceiver> self = Utils::OpenHandle(this);
i::Handle<i::Name> key_obj = Utils::OpenHandle(*key);
i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
i::PropertyDescriptor desc;
desc.set_writable(!(attributes & v8::ReadOnly));
desc.set_enumerable(!(attributes & v8::DontEnum));
desc.set_configurable(!(attributes & v8::DontDelete));
desc.set_value(value_obj);
if (self->IsJSProxy()) {
ENTER_V8(isolate, context, Object, DefineOwnProperty, Nothing<bool>(),
i::HandleScope);
Maybe<bool> success = i::JSReceiver::DefineOwnProperty(
isolate, self, key_obj, &desc, i::kDontThrow);
// Even though we said kDontThrow, there might be accessors that do throw.
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return success;
} else {
// If it's not a JSProxy, i::JSReceiver::DefineOwnProperty should never run
// a script.
ENTER_V8_NO_SCRIPT(isolate, context, Object, DefineOwnProperty,
Nothing<bool>(), i::HandleScope);
Maybe<bool> success = i::JSReceiver::DefineOwnProperty(
isolate, self, key_obj, &desc, i::kDontThrow);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return success;
}
}
Maybe<bool> v8::Object::DefineProperty(v8::Local<v8::Context> context,
v8::Local<Name> key,
PropertyDescriptor& descriptor) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, DefineOwnProperty, Nothing<bool>(),
i::HandleScope);
i::Handle<i::JSReceiver> self = Utils::OpenHandle(this);
i::Handle<i::Name> key_obj = Utils::OpenHandle(*key);
Maybe<bool> success = i::JSReceiver::DefineOwnProperty(
isolate, self, key_obj, &descriptor.get_private()->desc, i::kDontThrow);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return success;
}
Maybe<bool> v8::Object::SetPrivate(Local<Context> context, Local<Private> key,
Local<Value> value) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8_NO_SCRIPT(isolate, context, Object, SetPrivate, Nothing<bool>(),
i::HandleScope);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(reinterpret_cast<Name*>(*key));
auto value_obj = Utils::OpenHandle(*value);
if (self->IsJSProxy()) {
i::PropertyDescriptor desc;
desc.set_writable(true);
desc.set_enumerable(false);
desc.set_configurable(true);
desc.set_value(value_obj);
return i::JSProxy::SetPrivateProperty(
isolate, i::Handle<i::JSProxy>::cast(self),
i::Handle<i::Symbol>::cast(key_obj), &desc, i::kDontThrow);
}
auto js_object = i::Handle<i::JSObject>::cast(self);
i::LookupIterator it(js_object, key_obj, js_object);
has_pending_exception = i::JSObject::DefineOwnPropertyIgnoreAttributes(
&it, value_obj, i::DONT_ENUM)
.is_null();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
MaybeLocal<Value> v8::Object::Get(Local<v8::Context> context,
Local<Value> key) {
PREPARE_FOR_EXECUTION(context, 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, Object, Get, Value);
auto self = Utils::OpenHandle(this);
i::Handle<i::Object> result;
has_pending_exception =
!i::JSReceiver::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);
}
MaybeLocal<Value> v8::Object::GetPrivate(Local<Context> context,
Local<Private> key) {
return Get(context, Local<Value>(reinterpret_cast<Value*>(*key)));
}
Maybe<PropertyAttribute> v8::Object::GetPropertyAttributes(
Local<Context> context, Local<Value> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, GetPropertyAttributes,
Nothing<PropertyAttribute>(), i::HandleScope);
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() == i::ABSENT) {
return Just(static_cast<PropertyAttribute>(i::NONE));
}
return Just(static_cast<PropertyAttribute>(result.FromJust()));
}
MaybeLocal<Value> v8::Object::GetOwnPropertyDescriptor(Local<Context> context,
Local<Name> key) {
PREPARE_FOR_EXECUTION(context, Object, GetOwnPropertyDescriptor, Value);
i::Handle<i::JSReceiver> obj = Utils::OpenHandle(this);
i::Handle<i::Name> key_name = Utils::OpenHandle(*key);
i::PropertyDescriptor desc;
Maybe<bool> found =
i::JSReceiver::GetOwnPropertyDescriptor(isolate, obj, key_name, &desc);
has_pending_exception = found.IsNothing();
RETURN_ON_FAILED_EXECUTION(Value);
if (!found.FromJust()) {
return v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
}
RETURN_ESCAPED(Utils::ToLocal(desc.ToObject(isolate)));
}
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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, SetPrototype, Nothing<bool>(),
i::HandleScope);
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::JSReceiver::SetPrototype(self, value_obj, false, i::kThrowOnError);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(true);
}
Local<Object> v8::Object::FindInstanceInPrototypeChain(
v8::Local<FunctionTemplate> tmpl) {
auto self = Utils::OpenHandle(this);
auto isolate = self->GetIsolate();
i::PrototypeIterator iter(isolate, *self, i::kStartAtReceiver);
auto tmpl_info = *Utils::OpenHandle(*tmpl);
while (!tmpl_info->IsTemplateFor(iter.GetCurrent<i::JSObject>())) {
iter.Advance();
if (iter.IsAtEnd()) return Local<Object>();
if (!iter.GetCurrent()->IsJSObject()) return Local<Object>();
}
// IsTemplateFor() ensures that iter.GetCurrent() can't be a Proxy here.
return Utils::ToLocal(i::handle(iter.GetCurrent<i::JSObject>(), isolate));
}
MaybeLocal<Array> v8::Object::GetPropertyNames(Local<Context> context) {
return GetPropertyNames(
context, v8::KeyCollectionMode::kIncludePrototypes,
static_cast<v8::PropertyFilter>(ONLY_ENUMERABLE | SKIP_SYMBOLS),
v8::IndexFilter::kIncludeIndices);
}
MaybeLocal<Array> v8::Object::GetPropertyNames(Local<Context> context,
KeyCollectionMode mode,
PropertyFilter property_filter,
IndexFilter index_filter) {
PREPARE_FOR_EXECUTION(context, Object, GetPropertyNames, Array);
auto self = Utils::OpenHandle(this);
i::Handle<i::FixedArray> value;
i::KeyAccumulator accumulator(
isolate, static_cast<i::KeyCollectionMode>(mode),
static_cast<i::PropertyFilter>(property_filter));
accumulator.set_skip_indices(index_filter == IndexFilter::kSkipIndices);
has_pending_exception = accumulator.CollectKeys(self, self).IsNothing();
RETURN_ON_FAILED_EXECUTION(Array);
value = accumulator.GetKeys(i::GetKeysConversion::kKeepNumbers);
DCHECK(self->map()->EnumLength() == i::kInvalidEnumCacheSentinel ||
self->map()->EnumLength() == 0 ||
self->map()->instance_descriptors()->GetEnumCache()->keys() != *value);
auto result = isolate->factory()->NewJSArrayWithElements(value);
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) {
return GetOwnPropertyNames(
context, static_cast<v8::PropertyFilter>(ONLY_ENUMERABLE | SKIP_SYMBOLS));
}
Local<Array> v8::Object::GetOwnPropertyNames() {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
RETURN_TO_LOCAL_UNCHECKED(GetOwnPropertyNames(context), Array);
}
MaybeLocal<Array> v8::Object::GetOwnPropertyNames(Local<Context> context,
PropertyFilter filter) {
return GetPropertyNames(context, KeyCollectionMode::kOwnOnly, filter,
v8::IndexFilter::kIncludeIndices);
}
MaybeLocal<String> v8::Object::ObjectProtoToString(Local<Context> context) {
PREPARE_FOR_EXECUTION(context, Object, ObjectProtoToString, String);
auto self = Utils::OpenHandle(this);
Local<Value> result;
has_pending_exception =
!ToLocal<Value>(i::Execution::Call(isolate, isolate->object_to_string(),
self, 0, nullptr),
&result);
RETURN_ON_FAILED_EXECUTION(String);
RETURN_ESCAPED(Local<String>::Cast(result));
}
Local<String> v8::Object::GetConstructorName() {
auto self = Utils::OpenHandle(this);
i::Handle<i::String> name = i::JSReceiver::GetConstructorName(self);
return Utils::ToLocal(name);
}
Maybe<bool> v8::Object::SetIntegrityLevel(Local<Context> context,
IntegrityLevel level) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, SetIntegrityLevel, Nothing<bool>(),
i::HandleScope);
auto self = Utils::OpenHandle(this);
i::JSReceiver::IntegrityLevel i_level =
level == IntegrityLevel::kFrozen ? i::FROZEN : i::SEALED;
Maybe<bool> result =
i::JSReceiver::SetIntegrityLevel(self, i_level, i::kThrowOnError);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
Maybe<bool> v8::Object::Delete(Local<Context> context, Local<Value> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
if (self->IsJSProxy()) {
ENTER_V8(isolate, context, Object, Delete, Nothing<bool>(), i::HandleScope);
Maybe<bool> result = i::Runtime::DeleteObjectProperty(
isolate, self, key_obj, i::LanguageMode::kSloppy);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
} else {
// If it's not a JSProxy, i::Runtime::DeleteObjectProperty should never run
// a script.
ENTER_V8_NO_SCRIPT(isolate, context, Object, Delete, Nothing<bool>(),
i::HandleScope);
Maybe<bool> result = i::Runtime::DeleteObjectProperty(
isolate, self, key_obj, i::LanguageMode::kSloppy);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
}
bool v8::Object::Delete(v8::Local<Value> key) {
auto context = ContextFromHeapObject(Utils::OpenHandle(this));
return Delete(context, key).FromMaybe(false);
}
Maybe<bool> v8::Object::DeletePrivate(Local<Context> context,
Local<Private> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
// In case of private symbols, i::Runtime::DeleteObjectProperty does not run
// any author script.
ENTER_V8_NO_SCRIPT(isolate, context, Object, Delete, Nothing<bool>(),
i::HandleScope);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
Maybe<bool> result = i::Runtime::DeleteObjectProperty(
isolate, self, key_obj, i::LanguageMode::kSloppy);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
Maybe<bool> v8::Object::Has(Local<Context> context, Local<Value> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, Has, Nothing<bool>(), i::HandleScope);
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::HasPrivate(Local<Context> context, Local<Private> key) {
return HasOwnProperty(context, Local<Name>(reinterpret_cast<Name*>(*key)));
}
Maybe<bool> v8::Object::Delete(Local<Context> context, uint32_t index) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, Delete, Nothing<bool>(), i::HandleScope);
auto self = Utils::OpenHandle(this);
Maybe<bool> result = i::JSReceiver::DeleteElement(self, index);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
Maybe<bool> v8::Object::Has(Local<Context> context, uint32_t index) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, Has, Nothing<bool>(), i::HandleScope);
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;
}
template <typename Getter, typename Setter, typename Data>
static Maybe<bool> ObjectSetAccessor(Local<Context> context, Object* self,
Local<Name> name, Getter getter,
Setter setter, Data data,
AccessControl settings,
PropertyAttribute attributes,
bool is_special_data_property) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8_NO_SCRIPT(isolate, context, Object, SetAccessor, Nothing<bool>(),
i::HandleScope);
if (!Utils::OpenHandle(self)->IsJSObject()) return Just(false);
i::Handle<i::JSObject> obj =
i::Handle<i::JSObject>::cast(Utils::OpenHandle(self));
v8::Local<AccessorSignature> signature;
i::Handle<i::AccessorInfo> info =
MakeAccessorInfo(isolate, name, getter, setter, data, settings, signature,
is_special_data_property, false);
if (info.is_null()) return Nothing<bool>();
bool fast = obj->HasFastProperties();
i::Handle<i::Object> result;
i::Handle<i::Name> accessor_name(info->name(), isolate);
i::PropertyAttributes attrs = static_cast<i::PropertyAttributes>(attributes);
has_pending_exception =
!i::JSObject::SetAccessor(obj, accessor_name, info, attrs)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
if (result->IsUndefined(obj->GetIsolate())) return Just(false);
if (fast) {
i::JSObject::MigrateSlowToFast(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,
i::FLAG_disable_old_api_accessors);
}
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_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
auto self = Utils::OpenHandle(this);
if (!self->IsJSObject()) return;
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(i::Handle<i::JSObject>::cast(self),
v8::Utils::OpenHandle(*name), getter_i, setter_i,
static_cast<i::PropertyAttributes>(attribute));
}
Maybe<bool> Object::SetNativeDataProperty(v8::Local<v8::Context> context,
v8::Local<Name> name,
AccessorNameGetterCallback getter,
AccessorNameSetterCallback setter,
v8::Local<Value> data,
PropertyAttribute attributes) {
return ObjectSetAccessor(context, this, name, getter, setter, data, DEFAULT,
attributes, true);
}
Maybe<bool> v8::Object::HasOwnProperty(Local<Context> context,
Local<Name> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, HasOwnProperty, Nothing<bool>(),
i::HandleScope);
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;
}
Maybe<bool> v8::Object::HasOwnProperty(Local<Context> context, uint32_t index) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Object, HasOwnProperty, Nothing<bool>(),
i::HandleScope);
auto self = Utils::OpenHandle(this);
auto result = i::JSReceiver::HasOwnProperty(self, index);
has_pending_exception = result.IsNothing();
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return result;
}
Maybe<bool> v8::Object::HasRealNamedProperty(Local<Context> context,
Local<Name> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8_NO_SCRIPT(isolate, context, Object, HasRealNamedProperty,
Nothing<bool>(), i::HandleScope);
auto self = Utils::OpenHandle(this);
if (!self->IsJSObject()) return Just(false);
auto key_val = Utils::OpenHandle(*key);
auto result = i::JSObject::HasRealNamedProperty(
i::Handle<i::JSObject>::cast(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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8_NO_SCRIPT(isolate, context, Object, HasRealIndexedProperty,
Nothing<bool>(), i::HandleScope);
auto self = Utils::OpenHandle(this);
if (!self->IsJSObject()) return Just(false);
auto result = i::JSObject::HasRealElementProperty(
i::Handle<i::JSObject>::cast(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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8_NO_SCRIPT(isolate, context, Object, HasRealNamedCallbackProperty,
Nothing<bool>(), i::HandleScope);
auto self = Utils::OpenHandle(this);
if (!self->IsJSObject()) return Just(false);
auto key_val = Utils::OpenHandle(*key);
auto result = i::JSObject::HasRealNamedCallbackProperty(
i::Handle<i::JSObject>::cast(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->IsJSObject() &&
i::Handle<i::JSObject>::cast(self)->HasNamedInterceptor();
}
bool v8::Object::HasIndexedLookupInterceptor() {
auto self = Utils::OpenHandle(this);
return self->IsJSObject() &&
i::Handle<i::JSObject>::cast(self)->HasIndexedInterceptor();
}
MaybeLocal<Value> v8::Object::GetRealNamedPropertyInPrototypeChain(
Local<Context> context, Local<Name> key) {
PREPARE_FOR_EXECUTION(context, Object, GetRealNamedPropertyInPrototypeChain,
Value);
i::Handle<i::JSReceiver> self = Utils::OpenHandle(this);
if (!self->IsJSObject()) return MaybeLocal<Value>();
i::Handle<i::Name> key_obj = Utils::OpenHandle(*key);
i::PrototypeIterator iter(isolate, self);
if (iter.IsAtEnd()) return MaybeLocal<Value>();
i::Handle<i::JSReceiver> proto =
i::PrototypeIterator::GetCurrent<i::JSReceiver>(iter);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj, 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);
}
Maybe<PropertyAttribute>
v8::Object::GetRealNamedPropertyAttributesInPrototypeChain(
Local<Context> context, Local<Name> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8_NO_SCRIPT(isolate, context, Object,
GetRealNamedPropertyAttributesInPrototypeChain,
Nothing<PropertyAttribute>(), i::HandleScope);
i::Handle<i::JSReceiver> self = Utils::OpenHandle(this);
if (!self->IsJSObject()) return Nothing<PropertyAttribute>();
i::Handle<i::Name> key_obj = Utils::OpenHandle(*key);
i::PrototypeIterator iter(isolate, self);
if (iter.IsAtEnd()) return Nothing<PropertyAttribute>();
i::Handle<i::JSReceiver> proto =
i::PrototypeIterator::GetCurrent<i::JSReceiver>(iter);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj, proto,
i::LookupIterator::PROTOTYPE_CHAIN_SKIP_INTERCEPTOR);
Maybe<i::PropertyAttributes> result =
i::JSReceiver::GetPropertyAttributes(&it);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(PropertyAttribute);
if (!it.IsFound()) return Nothing<PropertyAttribute>();
if (result.FromJust() == i::ABSENT) return Just(None);
return Just(static_cast<PropertyAttribute>(result.FromJust()));
}
MaybeLocal<Value> v8::Object::GetRealNamedProperty(Local<Context> context,
Local<Name> key) {
PREPARE_FOR_EXECUTION(context, Object, GetRealNamedProperty, Value);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj, self,
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);
}
Maybe<PropertyAttribute> v8::Object::GetRealNamedPropertyAttributes(
Local<Context> context, Local<Name> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8_NO_SCRIPT(isolate, context, Object, GetRealNamedPropertyAttributes,
Nothing<PropertyAttribute>(), i::HandleScope);
auto self = Utils::OpenHandle(this);
auto key_obj = Utils::OpenHandle(*key);
i::LookupIterator it = i::LookupIterator::PropertyOrElement(
isolate, self, key_obj, self,
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() == i::ABSENT) {
return Just(static_cast<PropertyAttribute>(i::NONE));
}
return Just<PropertyAttribute>(
static_cast<PropertyAttribute>(result.FromJust()));
}
Local<v8::Object> v8::Object::Clone() {
auto self = i::Handle<i::JSObject>::cast(Utils::OpenHandle(this));
auto isolate = self->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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);
return Utils::ToLocal(self->GetCreationContext());
}
int v8::Object::GetIdentityHash() {
i::DisallowHeapAllocation no_gc;
auto isolate = Utils::OpenHandle(this)->GetIsolate();
i::HandleScope scope(isolate);
auto self = Utils::OpenHandle(this);
return self->GetOrCreateIdentityHash(isolate)->value();
}
bool v8::Object::IsCallable() {
auto self = Utils::OpenHandle(this);
return self->IsCallable();
}
bool v8::Object::IsConstructor() {
auto self = Utils::OpenHandle(this);
return self->IsConstructor();
}
MaybeLocal<Value> Object::CallAsFunction(Local<Context> context,
Local<Value> recv, int argc,
Local<Value> argv[]) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.Execute");
ENTER_V8(isolate, context, Object, CallAsFunction, MaybeLocal<Value>(),
InternalEscapableScope);
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);
Local<Value> result;
has_pending_exception = !ToLocal<Value>(
i::Execution::Call(isolate, self, recv_obj, argc, args), &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
MaybeLocal<Value> Object::CallAsConstructor(Local<Context> context, int argc,
Local<Value> argv[]) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.Execute");
ENTER_V8(isolate, context, Object, CallAsConstructor, MaybeLocal<Value>(),
InternalEscapableScope);
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<Value> result;
has_pending_exception = !ToLocal<Value>(
i::Execution::New(isolate, self, self, argc, args), &result);
RETURN_ON_FAILED_EXECUTION(Value);
RETURN_ESCAPED(result);
}
MaybeLocal<Function> Function::New(Local<Context> context,
FunctionCallback callback, Local<Value> data,
int length, ConstructorBehavior behavior) {
i::Isolate* isolate = Utils::OpenHandle(*context)->GetIsolate();
LOG_API(isolate, Function, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
auto templ = FunctionTemplateNew(isolate, callback, data, Local<Signature>(),
length, true);
if (behavior == ConstructorBehavior::kThrow) templ->RemovePrototype();
return templ->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,
ConstructorBehavior::kAllow)
.FromMaybe(Local<Function>());
}
MaybeLocal<Object> Function::NewInstance(Local<Context> context, int argc,
v8::Local<v8::Value> argv[]) const {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.Execute");
ENTER_V8(isolate, context, Function, NewInstance, MaybeLocal<Object>(),
InternalEscapableScope);
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(isolate, self, self, argc, args), &result);
RETURN_ON_FAILED_EXECUTION(Object);
RETURN_ESCAPED(result);
}
MaybeLocal<v8::Value> Function::Call(Local<Context> context,
v8::Local<v8::Value> recv, int argc,
v8::Local<v8::Value> argv[]) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.Execute");
ENTER_V8(isolate, context, Function, Call, MaybeLocal<Value>(),
InternalEscapableScope);
i::TimerEventScope<i::TimerEventExecute> timer_scope(isolate);
auto self = Utils::OpenHandle(this);
Utils::ApiCheck(!self.is_null(), "v8::Function::Call",
"Function to be called is a null pointer");
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), &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) {
auto self = Utils::OpenHandle(this);
if (!self->IsJSFunction()) return;
auto func = i::Handle<i::JSFunction>::cast(self);
func->shared()->set_name(*Utils::OpenHandle(*name));
}
Local<Value> Function::GetName() const {
auto self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
if (self->IsJSBoundFunction()) {
auto func = i::Handle<i::JSBoundFunction>::cast(self);
i::Handle<i::Object> name;
ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate, name,
i::JSBoundFunction::GetName(isolate, func),
Local<Value>());
return Utils::ToLocal(name);
}
if (self->IsJSFunction()) {
auto func = i::Handle<i::JSFunction>::cast(self);
return Utils::ToLocal(handle(func->shared()->name(), isolate));
}
return ToApiHandle<Primitive>(isolate->factory()->undefined_value());
}
Local<Value> Function::GetInferredName() const {
auto self = Utils::OpenHandle(this);
if (!self->IsJSFunction()) {
return ToApiHandle<Primitive>(
self->GetIsolate()->factory()->undefined_value());
}
auto func = i::Handle<i::JSFunction>::cast(self);
return Utils::ToLocal(i::Handle<i::Object>(func->shared()->inferred_name(),
func->GetIsolate()));
}
Local<Value> Function::GetDebugName() const {
auto self = Utils::OpenHandle(this);
if (!self->IsJSFunction()) {
return ToApiHandle<Primitive>(
self->GetIsolate()->factory()->undefined_value());
}
auto func = i::Handle<i::JSFunction>::cast(self);
i::Handle<i::String> name = i::JSFunction::GetDebugName(func);
return Utils::ToLocal(i::Handle<i::Object>(*name, name->GetIsolate()));
}
Local<Value> Function::GetDisplayName() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
auto self = Utils::OpenHandle(this);
if (!self->IsJSFunction()) {
return ToApiHandle<Primitive>(isolate->factory()->undefined_value());
}
auto func = i::Handle<i::JSFunction>::cast(self);
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 {
auto self = Utils::OpenHandle(this);
if (!self->IsJSFunction()) {
return v8::ScriptOrigin(Local<Value>());
}
auto func = i::Handle<i::JSFunction>::cast(self);
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 {
auto self = Utils::OpenHandle(this);
if (!self->IsJSFunction()) {
return kLineOffsetNotFound;
}
auto func = i::Handle<i::JSFunction>::cast(self);
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 {
auto self = Utils::OpenHandle(this);
if (!self->IsJSFunction()) {
return kLineOffsetNotFound;
}
auto func = i::Handle<i::JSFunction>::cast(self);
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;
}
int Function::ScriptId() const {
auto self = Utils::OpenHandle(this);
if (!self->IsJSFunction()) {
return v8::UnboundScript::kNoScriptId;
}
auto func = i::Handle<i::JSFunction>::cast(self);
if (!func->shared()->script()->IsScript()) {
return v8::UnboundScript::kNoScriptId;
}
i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
return script->id();
}
Local<v8::Value> Function::GetBoundFunction() const {
auto self = Utils::OpenHandle(this);
if (self->IsJSBoundFunction()) {
auto bound_function = i::Handle<i::JSBoundFunction>::cast(self);
auto bound_target_function = i::handle(
bound_function->bound_target_function(), bound_function->GetIsolate());
return Utils::CallableToLocal(bound_target_function);
}
return v8::Undefined(reinterpret_cast<v8::Isolate*>(self->GetIsolate()));
}
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 == nullptr) 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 != nullptr && right_as_cons != nullptr) {
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 != nullptr) {
cons_string = left_as_cons;
continue;
}
// Descend right in place.
if (right_as_cons != nullptr) {
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 internal::ConsString;
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 == nullptr) {
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 == nullptr) {
total_length += leaf_length;
MergeLeafRight(&total_length, &state, right_leaf_state);
if (left_as_cons != nullptr) {
// 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 == nullptr) {
// 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();
}
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 == nullptr) 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) {
DCHECK_GT(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 (unibrow::Utf16::IsSurrogatePair(last_character, character)) {
int written = unibrow::Utf8::Encode(buffer, character, last_character,
replace_invalid_utf8);
DCHECK_EQ(written, 1);
return written;
}
// Use a scratch buffer to check the required characters.
char temp_buffer[unibrow::Utf8::kMaxEncodedSize];
// Can't encode using last_character as gcc has array bounds issues.
int written = unibrow::Utf8::Encode(temp_buffer, character,
unibrow::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) {
DCHECK(!early_termination_);
if (length == 0) return;
// Copy state to stack.
char* buffer = buffer_;
int last_character = sizeof(Char) == 1
? unibrow::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(unibrow::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 += unibrow::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 += unibrow::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_GE(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_ && unibrow::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 != nullptr) {
*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 == nullptr) 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::Handle<i::String> str = Utils::OpenHandle(this);
i::Isolate* isolate = str->GetIsolate();
LOG_API(isolate, String, WriteUtf8);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
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, isolate);
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 != nullptr) *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_NO_SCRIPT_NO_EXCEPTION(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 = nullptr;
}
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 = nullptr;
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 nullptr;
}
}
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);
}
Local<Value> Private::Name() const {
return reinterpret_cast<const Symbol*>(this)->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(i::HeapObject::cast(*obj)->GetIsolate());
}
int64_t Integer::Value() const {
i::Handle<i::Object> obj = Utils::OpenHandle(this);
if (obj->IsSmi()) {
return i::Smi::ToInt(*obj);
} 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::ToInt(*obj);
} 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::ToInt(*obj);
} else {
return static_cast<uint32_t>(obj->Number());
}
}
int v8::Object::InternalFieldCount() {
i::Handle<i::JSReceiver> self = Utils::OpenHandle(this);
if (!self->IsJSObject()) return 0;
return i::Handle<i::JSObject>::cast(self)->GetEmbedderFieldCount();
}
static bool InternalFieldOK(i::Handle<i::JSReceiver> obj, int index,
const char* location) {
return Utils::ApiCheck(
obj->IsJSObject() &&
(index < i::Handle<i::JSObject>::cast(obj)->GetEmbedderFieldCount()),
location, "Internal field out of bounds");
}
Local<Value> v8::Object::SlowGetInternalField(int index) {
i::Handle<i::JSReceiver> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::GetInternalField()";
if (!InternalFieldOK(obj, index, location)) return Local<Value>();
i::Handle<i::Object> value(
i::Handle<i::JSObject>::cast(obj)->GetEmbedderField(index),
obj->GetIsolate());
return Utils::ToLocal(value);
}
void v8::Object::SetInternalField(int index, v8::Local<Value> value) {
i::Handle<i::JSReceiver> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::SetInternalField()";
if (!InternalFieldOK(obj, index, location)) return;
i::Handle<i::Object> val = Utils::OpenHandle(*value);
i::Handle<i::JSObject>::cast(obj)->SetEmbedderField(index, *val);
}
void* v8::Object::SlowGetAlignedPointerFromInternalField(int index) {
i::Handle<i::JSReceiver> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::GetAlignedPointerFromInternalField()";
if (!InternalFieldOK(obj, index, location)) return nullptr;
return DecodeSmiToAligned(
i::Handle<i::JSObject>::cast(obj)->GetEmbedderField(index), location);
}
void v8::Object::SetAlignedPointerInInternalField(int index, void* value) {
i::Handle<i::JSReceiver> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::SetAlignedPointerInInternalField()";
if (!InternalFieldOK(obj, index, location)) return;
i::Handle<i::JSObject>::cast(obj)->SetEmbedderField(
index, EncodeAlignedAsSmi(value, location));
DCHECK_EQ(value, GetAlignedPointerFromInternalField(index));
}
void v8::Object::SetAlignedPointerInInternalFields(int argc, int indices[],
void* values[]) {
i::Handle<i::JSReceiver> obj = Utils::OpenHandle(this);
const char* location = "v8::Object::SetAlignedPointerInInternalFields()";
i::DisallowHeapAllocation no_gc;
i::JSObject* object = i::JSObject::cast(*obj);
int nof_embedder_fields = object->GetEmbedderFieldCount();
for (int i = 0; i < argc; i++) {
int index = indices[i];
if (!Utils::ApiCheck(index < nof_embedder_fields, location,
"Internal field out of bounds")) {
return;
}
void* value = values[i];
object->SetEmbedderField(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->IsSmi() &&
obj->IsUndefined(i::HeapObject::cast(obj)->GetIsolate())) {
return nullptr;
}
i::Object* foreign = i::JSObject::cast(obj)->GetEmbedderField(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;
}
#if V8_OS_POSIX
bool V8::TryHandleSignal(int signum, void* info, void* context) {
#if V8_OS_LINUX && V8_TARGET_ARCH_X64 && !V8_OS_ANDROID
return v8::internal::trap_handler::TryHandleSignal(
signum, static_cast<siginfo_t*>(info), static_cast<ucontext_t*>(context));
#else // V8_OS_LINUX && V8_TARGET_ARCH_X64 && !V8_OS_ANDROID
return false;
#endif
}
#endif
bool V8::RegisterDefaultSignalHandler() {
return v8::internal::trap_handler::RegisterDefaultSignalHandler();
}
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),
total_available_size_(0),
used_heap_size_(0),
heap_size_limit_(0),
malloced_memory_(0),
peak_malloced_memory_(0),
does_zap_garbage_(0),
number_of_native_contexts_(0),
number_of_detached_contexts_(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) {}
HeapCodeStatistics::HeapCodeStatistics()
: code_and_metadata_size_(0), bytecode_and_metadata_size_(0) {}
bool v8::V8::InitializeICUDefaultLocation(const char* exec_path,
const char* icu_data_file) {
return i::InitializeICUDefaultLocation(exec_path, 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();
}
template <typename ObjectType>
struct InvokeBootstrapper;
template <>
struct InvokeBootstrapper<i::Context> {
i::Handle<i::Context> Invoke(
i::Isolate* isolate, i::MaybeHandle<i::JSGlobalProxy> maybe_global_proxy,
v8::Local<v8::ObjectTemplate> global_proxy_template,
v8::ExtensionConfiguration* extensions, size_t context_snapshot_index,
v8::DeserializeInternalFieldsCallback embedder_fields_deserializer) {
return isolate->bootstrapper()->CreateEnvironment(
maybe_global_proxy, global_proxy_template, extensions,
context_snapshot_index, embedder_fields_deserializer);
}
};
template <>
struct InvokeBootstrapper<i::JSGlobalProxy> {
i::Handle<i::JSGlobalProxy> Invoke(
i::Isolate* isolate, i::MaybeHandle<i::JSGlobalProxy> maybe_global_proxy,
v8::Local<v8::ObjectTemplate> global_proxy_template,
v8::ExtensionConfiguration* extensions, size_t context_snapshot_index,
v8::DeserializeInternalFieldsCallback embedder_fields_deserializer) {
USE(extensions);
USE(context_snapshot_index);
return isolate->bootstrapper()->NewRemoteContext(maybe_global_proxy,
global_proxy_template);
}
};
template <typename ObjectType>
static i::Handle<ObjectType> CreateEnvironment(
i::Isolate* isolate, v8::ExtensionConfiguration* extensions,
v8::MaybeLocal<ObjectTemplate> maybe_global_template,
v8::MaybeLocal<Value> maybe_global_proxy, size_t context_snapshot_index,
v8::DeserializeInternalFieldsCallback embedder_fields_deserializer) {
i::Handle<ObjectType> result;
{
ENTER_V8_FOR_NEW_CONTEXT(isolate);
v8::Local<ObjectTemplate> proxy_template;
i::Handle<i::FunctionTemplateInfo> proxy_constructor;
i::Handle<i::FunctionTemplateInfo> global_constructor;
i::Handle<i::Object> named_interceptor(
isolate->factory()->undefined_value());
i::Handle<i::Object> indexed_interceptor(
isolate->factory()->undefined_value());
if (!maybe_global_template.IsEmpty()) {
v8::Local<v8::ObjectTemplate> global_template =
maybe_global_template.ToLocalChecked();
// 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));
proxy_template->SetInternalFieldCount(
global_template->InternalFieldCount());
// 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(isolate)) {
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());
}
// Same for other interceptors. If the global constructor has
// interceptors, we need to replace them temporarily with noop
// interceptors, so the map is correctly marked as having interceptors,
// but we don't invoke any.
if (!global_constructor->named_property_handler()->IsUndefined(isolate)) {
named_interceptor =
handle(global_constructor->named_property_handler(), isolate);
global_constructor->set_named_property_handler(
isolate->heap()->noop_interceptor_info());
}
if (!global_constructor->indexed_property_handler()->IsUndefined(
isolate)) {
indexed_interceptor =
handle(global_constructor->indexed_property_handler(), isolate);
global_constructor->set_indexed_property_handler(
isolate->heap()->noop_interceptor_info());
}
}
i::MaybeHandle<i::JSGlobalProxy> maybe_proxy;
if (!maybe_global_proxy.IsEmpty()) {
maybe_proxy = i::Handle<i::JSGlobalProxy>::cast(
Utils::OpenHandle(*maybe_global_proxy.ToLocalChecked()));
}
// Create the environment.
InvokeBootstrapper<ObjectType> invoke;
result =
invoke.Invoke(isolate, maybe_proxy, proxy_template, extensions,
context_snapshot_index, embedder_fields_deserializer);
// Restore the access check info and interceptors on the global template.
if (!maybe_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());
global_constructor->set_named_property_handler(*named_interceptor);
global_constructor->set_indexed_property_handler(*indexed_interceptor);
}
}
// Leave V8.
return result;
}
Local<Context> NewContext(
v8::Isolate* external_isolate, v8::ExtensionConfiguration* extensions,
v8::MaybeLocal<ObjectTemplate> global_template,
v8::MaybeLocal<Value> global_object, size_t context_snapshot_index,
v8::DeserializeInternalFieldsCallback embedder_fields_deserializer) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external_isolate);
// TODO(jkummerow): This is for crbug.com/713699. Remove it if it doesn't
// fail.
// Sanity-check that the isolate is initialized and usable.
CHECK(isolate->builtins()->builtin(i::Builtins::kIllegal)->IsCode());
TRACE_EVENT_CALL_STATS_SCOPED(isolate, "v8", "V8.NewContext");
LOG_API(isolate, Context, New);
i::HandleScope scope(isolate);
ExtensionConfiguration no_extensions;
if (extensions == nullptr) extensions = &no_extensions;
i::Handle<i::Context> env = CreateEnvironment<i::Context>(
isolate, extensions, global_template, global_object,
context_snapshot_index, embedder_fields_deserializer);
if (env.is_null()) {
if (isolate->has_pending_exception()) isolate->clear_pending_exception();
return Local<Context>();
}
return Utils::ToLocal(scope.CloseAndEscape(env));
}
Local<Context> v8::Context::New(
v8::Isolate* external_isolate, v8::ExtensionConfiguration* extensions,
v8::MaybeLocal<ObjectTemplate> global_template,
v8::MaybeLocal<Value> global_object,
DeserializeInternalFieldsCallback internal_fields_deserializer) {
return NewContext(external_isolate, extensions, global_template,
global_object, 0, internal_fields_deserializer);
}
MaybeLocal<Context> v8::Context::FromSnapshot(
v8::Isolate* external_isolate, size_t context_snapshot_index,
v8::DeserializeInternalFieldsCallback embedder_fields_deserializer,
v8::ExtensionConfiguration* extensions, MaybeLocal<Value> global_object) {
size_t index_including_default_context = context_snapshot_index + 1;
if (!i::Snapshot::HasContextSnapshot(
reinterpret_cast<i::Isolate*>(external_isolate),
index_including_default_context)) {
return MaybeLocal<Context>();
}
return NewContext(external_isolate, extensions, MaybeLocal<ObjectTemplate>(),
global_object, index_including_default_context,
embedder_fields_deserializer);
}
MaybeLocal<Object> v8::Context::NewRemoteContext(
v8::Isolate* external_isolate, v8::Local<ObjectTemplate> global_template,
v8::MaybeLocal<v8::Value> global_object) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(external_isolate);
LOG_API(isolate, Context, NewRemoteContext);
i::HandleScope scope(isolate);
i::Handle<i::FunctionTemplateInfo> global_constructor =
EnsureConstructor(isolate, *global_template);
Utils::ApiCheck(global_constructor->needs_access_check(),
"v8::Context::NewRemoteContext",
"Global template needs to have access checks enabled.");
i::Handle<i::AccessCheckInfo> access_check_info = i::handle(
i::AccessCheckInfo::cast(global_constructor->access_check_info()),
isolate);
Utils::ApiCheck(access_check_info->named_interceptor() != nullptr,
"v8::Context::NewRemoteContext",
"Global template needs to have access check handlers.");
i::Handle<i::JSGlobalProxy> global_proxy =
CreateEnvironment<i::JSGlobalProxy>(isolate, nullptr, global_template,
global_object, 0,
DeserializeInternalFieldsCallback());
if (global_proxy.is_null()) {
if (isolate->has_pending_exception()) isolate->clear_pending_exception();
return MaybeLocal<Object>();
}
return Utils::ToLocal(
scope.CloseAndEscape(i::Handle<i::JSObject>::cast(global_proxy)));
}
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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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(
context->GetIsolate());
}
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);
}
namespace {
i::Object** GetSerializedDataFromFixedArray(i::Isolate* isolate,
i::FixedArray* list, size_t index) {
if (index < static_cast<size_t>(list->length())) {
int int_index = static_cast<int>(index);
i::Object* object = list->get(int_index);
if (!object->IsTheHole(isolate)) {
list->set_the_hole(isolate, int_index);
// Shrink the list so that the last element is not the hole.
int last = list->length() - 1;
while (last >= 0 && list->is_the_hole(isolate, last)) last--;
list->Shrink(last + 1);
return i::Handle<i::Object>(object, isolate).location();
}
}
return nullptr;
}
} // anonymous namespace
i::Object** Context::GetDataFromSnapshotOnce(size_t index) {
auto context = Utils::OpenHandle(this);
i::Isolate* i_isolate = context->GetIsolate();
i::FixedArray* list = i::FixedArray::cast(context->serialized_objects());
return GetSerializedDataFromFixedArray(i_isolate, list, index);
}
MaybeLocal<v8::Object> ObjectTemplate::NewInstance(Local<Context> context) {
PREPARE_FOR_EXECUTION(context, 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);
}
void v8::ObjectTemplate::CheckCast(Data* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsObjectTemplateInfo(), "v8::ObjectTemplate::Cast",
"Could not convert to object template");
}
void v8::FunctionTemplate::CheckCast(Data* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsFunctionTemplateInfo(), "v8::FunctionTemplate::Cast",
"Could not convert to function template");
}
void v8::Signature::CheckCast(Data* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsFunctionTemplateInfo(), "v8::Signature::Cast",
"Could not convert to signature");
}
void v8::AccessorSignature::CheckCast(Data* that) {
i::Handle<i::Object> obj = Utils::OpenHandle(that);
Utils::ApiCheck(obj->IsFunctionTemplateInfo(), "v8::AccessorSignature::Cast",
"Could not convert to accessor signature");
}
MaybeLocal<v8::Function> FunctionTemplate::GetFunction(Local<Context> context) {
PREPARE_FOR_EXECUTION(context, 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);
}
MaybeLocal<v8::Object> FunctionTemplate::NewRemoteInstance() {
auto self = Utils::OpenHandle(this);
i::Isolate* isolate = self->GetIsolate();
LOG_API(isolate, FunctionTemplate, NewRemoteInstance);
i::HandleScope scope(isolate);
i::Handle<i::FunctionTemplateInfo> constructor =
EnsureConstructor(isolate, *InstanceTemplate());
Utils::ApiCheck(constructor->needs_access_check(),
"v8::FunctionTemplate::NewRemoteInstance",
"InstanceTemplate needs to have access checks enabled.");
i::Handle<i::AccessCheckInfo> access_check_info = i::handle(
i::AccessCheckInfo::cast(constructor->access_check_info()), isolate);
Utils::ApiCheck(access_check_info->named_interceptor() != nullptr,
"v8::FunctionTemplate::NewRemoteInstance",
"InstanceTemplate needs to have access check handlers.");
i::Handle<i::JSObject> object;
if (!i::ApiNatives::InstantiateRemoteObject(
Utils::OpenHandle(*InstanceTemplate()))
.ToHandle(&object)) {
if (isolate->has_pending_exception()) {
isolate->OptionalRescheduleException(true);
}
return MaybeLocal<Object>();
}
return Utils::ToLocal(scope.CloseAndEscape(object));
}
bool FunctionTemplate::HasInstance(v8::Local<v8::Value> value) {
auto self = Utils::OpenHandle(this);
auto obj = Utils::OpenHandle(*value);
if (obj->IsJSObject() && self->IsTemplateFor(i::JSObject::cast(*obj))) {
return true;
}
if (obj->IsJSGlobalProxy()) {
// If it's a global proxy, then test with the global object. Note that the
// inner global object may not necessarily be a JSGlobalObject.
i::PrototypeIterator iter(i::JSObject::cast(*obj)->map());
// The global proxy should always have a prototype, as it is a bug to call
// this on a detached JSGlobalProxy.
DCHECK(!iter.IsAtEnd());
return self->IsTemplateFor(iter.GetCurrent<i::JSObject>());
}
return false;
}
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_NO_SCRIPT_NO_EXCEPTION(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);
} // anonymous namespace
// TODO(dcarney): throw a context free exception.
#define NEW_STRING(isolate, class_name, function_name, Char, data, type, \
length) \
MaybeLocal<String> result; \
if (length == 0) { \
result = String::Empty(isolate); \
} else if (length > i::String::kMaxLength) { \
result = MaybeLocal<String>(); \
} else { \
i::Isolate* i_isolate = reinterpret_cast<internal::Isolate*>(isolate); \
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate); \
LOG_API(i_isolate, class_name, function_name); \
if (length < 0) length = StringLength(data); \
i::Handle<i::String> handle_result = \
NewString(i_isolate->factory(), type, \
i::Vector<const Char>(data, length)) \
.ToHandleChecked(); \
result = Utils::ToLocal(handle_result); \
}
Local<String> String::NewFromUtf8(Isolate* isolate,
const char* data,
NewStringType type,
int length) {
NEW_STRING(isolate, String, NewFromUtf8, char, data,
static_cast<v8::NewStringType>(type), length);
RETURN_TO_LOCAL_UNCHECKED(result, String);
}
MaybeLocal<String> String::NewFromUtf8(Isolate* isolate, const char* data,
v8::NewStringType type, int length) {
NEW_STRING(isolate, String, NewFromUtf8, char, data, type, length);
return result;
}
MaybeLocal<String> String::NewFromOneByte(Isolate* isolate, const uint8_t* data,
v8::NewStringType type, int length) {
NEW_STRING(isolate, String, NewFromOneByte, uint8_t, data, type, length);
return result;
}
Local<String> String::NewFromTwoByte(Isolate* isolate,
const uint16_t* data,
NewStringType type,
int length) {
NEW_STRING(isolate, String, NewFromTwoByte, uint16_t, data,
static_cast<v8::NewStringType>(type), length);
RETURN_TO_LOCAL_UNCHECKED(result, String);
}
MaybeLocal<String> String::NewFromTwoByte(Isolate* isolate,
const uint16_t* data,
v8::NewStringType type, int length) {
NEW_STRING(isolate, String, NewFromTwoByte, uint16_t, data, type, length);
return result;
}
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_NO_SCRIPT_NO_EXCEPTION(isolate);
LOG_API(isolate, 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_NO_SCRIPT_NO_EXCEPTION(i_isolate);
LOG_API(i_isolate, String, NewExternalTwoByte);
if (resource->length() > 0) {
i::Handle<i::String> string = i_isolate->factory()
->NewExternalStringFromTwoByte(resource)
.ToHandleChecked();
i_isolate->heap()->RegisterExternalString(*string);
return Utils::ToLocal(string);
} else {
// The resource isn't going to be used, free it immediately.
resource->Dispose();
return Utils::ToLocal(i_isolate->factory()->empty_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_NO_SCRIPT_NO_EXCEPTION(i_isolate);
LOG_API(i_isolate, String, NewExternalOneByte);
if (resource->length() > 0) {
i::Handle<i::String> string = i_isolate->factory()
->NewExternalStringFromOneByte(resource)
.ToHandleChecked();
i_isolate->heap()->RegisterExternalString(*string);
return Utils::ToLocal(string);
} else {
// The resource isn't going to be used, free it immediately.
resource->Dispose();
return Utils::ToLocal(i_isolate->factory()->empty_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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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);
if (obj->IsExternalString()) return false;
// Old space strings should be externalized.
i::Isolate* isolate = obj->GetIsolate();
return !isolate->heap()->new_space()->Contains(*obj);
}
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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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(Isolate* isolate, bool value) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, BooleanObject, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::Handle<i::Object> boolean(value ? i_isolate->heap()->true_value()
: i_isolate->heap()->false_value(),
i_isolate);
i::Handle<i::Object> obj =
i::Object::ToObject(i_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(isolate);
}
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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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::JSDate::New(isolate->date_function(), isolate->date_function(), 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_NO_SCRIPT_NO_EXCEPTION(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::ToInt(date_cache_version->get(0)) + 1));
}
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::JSRegExp::New(Utils::OpenHandle(*pattern),
static_cast<i::JSRegExp::Flags>(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(flag) \
STATIC_ASSERT(static_cast<int>(v8::RegExp::flag) == \
static_cast<int>(i::JSRegExp::flag))
REGEXP_FLAG_ASSERT_EQ(kNone);
REGEXP_FLAG_ASSERT_EQ(kGlobal);
REGEXP_FLAG_ASSERT_EQ(kIgnoreCase);
REGEXP_FLAG_ASSERT_EQ(kMultiline);
REGEXP_FLAG_ASSERT_EQ(kSticky);
REGEXP_FLAG_ASSERT_EQ(kUnicode);
#undef REGEXP_FLAG_ASSERT_EQ
v8::RegExp::Flags v8::RegExp::GetFlags() const {
i::Handle<i::JSRegExp> obj = Utils::OpenHandle(this);
return RegExp::Flags(static_cast<int>(obj->GetFlags()));
}
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_NO_SCRIPT_NO_EXCEPTION(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::ToInt(length);
} else {
return static_cast<uint32_t>(length->Number());
}
}
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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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),
&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)
.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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Map, Has, Nothing<bool>(), i::HandleScope);
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)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue(isolate));
}
Maybe<bool> Map::Delete(Local<Context> context, Local<Value> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Map, Delete, Nothing<bool>(), i::HandleScope);
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)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue(isolate));
}
namespace {
enum class MapAsArrayKind {
kEntries = i::JS_MAP_KEY_VALUE_ITERATOR_TYPE,
kKeys = i::JS_MAP_KEY_ITERATOR_TYPE,
kValues = i::JS_MAP_VALUE_ITERATOR_TYPE
};
i::Handle<i::JSArray> MapAsArray(i::Isolate* isolate, i::Object* table_obj,
int offset, MapAsArrayKind kind) {
i::Factory* factory = isolate->factory();
i::Handle<i::OrderedHashMap> table(i::OrderedHashMap::cast(table_obj));
if (offset >= table->NumberOfElements()) return factory->NewJSArray(0);
int length = (table->NumberOfElements() - offset) *
(kind == MapAsArrayKind::kEntries ? 2 : 1);
i::Handle<i::FixedArray> result = factory->NewFixedArray(length);
int result_index = 0;
{
i::DisallowHeapAllocation no_gc;
int capacity = table->UsedCapacity();
i::Oddball* the_hole = isolate->heap()->the_hole_value();
for (int i = 0; i < capacity; ++i) {
i::Object* key = table->KeyAt(i);
if (key == the_hole) continue;
if (offset-- > 0) continue;
if (kind == MapAsArrayKind::kEntries || kind == MapAsArrayKind::kKeys) {
result->set(result_index++, key);
}
if (kind == MapAsArrayKind::kEntries || kind == MapAsArrayKind::kValues) {
result->set(result_index++, table->ValueAt(i));
}
}
}
DCHECK_EQ(result_index, result->length());
DCHECK_EQ(result_index, length);
return factory->NewJSArrayWithElements(result, i::PACKED_ELEMENTS, length);
}
} // namespace
Local<Array> Map::AsArray() const {
i::Handle<i::JSMap> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
LOG_API(isolate, Map, AsArray);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
return Utils::ToLocal(
MapAsArray(isolate, obj->table(), 0, MapAsArrayKind::kEntries));
}
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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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)
.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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Set, Has, Nothing<bool>(), i::HandleScope);
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)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue(isolate));
}
Maybe<bool> Set::Delete(Local<Context> context, Local<Value> key) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Set, Delete, Nothing<bool>(), i::HandleScope);
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)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
return Just(result->IsTrue(isolate));
}
namespace {
i::Handle<i::JSArray> SetAsArray(i::Isolate* isolate, i::Object* table_obj,
int offset) {
i::Factory* factory = isolate->factory();
i::Handle<i::OrderedHashSet> table(i::OrderedHashSet::cast(table_obj));
int length = table->NumberOfElements() - offset;
if (length <= 0) return factory->NewJSArray(0);
i::Handle<i::FixedArray> result = factory->NewFixedArray(length);
int result_index = 0;
{
i::DisallowHeapAllocation no_gc;
int capacity = table->UsedCapacity();
i::Oddball* the_hole = isolate->heap()->the_hole_value();
for (int i = 0; i < capacity; ++i) {
i::Object* key = table->KeyAt(i);
if (key == the_hole) continue;
if (offset-- > 0) continue;
result->set(result_index++, key);
}
}
DCHECK_EQ(result_index, result->length());
DCHECK_EQ(result_index, length);
return factory->NewJSArrayWithElements(result, i::PACKED_ELEMENTS, length);
}
} // namespace
Local<Array> Set::AsArray() const {
i::Handle<i::JSSet> obj = Utils::OpenHandle(this);
i::Isolate* isolate = obj->GetIsolate();
LOG_API(isolate, Set, AsArray);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
return Utils::ToLocal(SetAsArray(isolate, obj->table(), 0));
}
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_internal_constructor(),
isolate->factory()->undefined_value(), 0, nullptr)
.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::JSReceiver> promise = Utils::OpenHandle(this);
return Local<Promise>::Cast(Utils::ToLocal(promise));
}
Maybe<bool> Promise::Resolver::Resolve(Local<Context> context,
Local<Value> value) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Promise_Resolver, Resolve, Nothing<bool>(),
i::HandleScope);
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)
.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) {
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
ENTER_V8(isolate, context, Promise_Resolver, Reject, Nothing<bool>(),
i::HandleScope);
auto self = Utils::OpenHandle(this);
// We pass true to trigger the debugger's on exception handler.
i::Handle<i::Object> argv[] = {self, Utils::OpenHandle(*value),
isolate->factory()->ToBoolean(true)};
has_pending_exception =
i::Execution::Call(isolate, isolate->promise_internal_reject(),
isolate->factory()->undefined_value(), arraysize(argv),
argv)
.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::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)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Promise);
RETURN_ESCAPED(Local<Promise>::Cast(Utils::ToLocal(result)));
}
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)
.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(Promise);
RETURN_ESCAPED(Local<Promise>::Cast(Utils::ToLocal(result)));
}
bool Promise::HasHandler() {
i::Handle<i::JSReceiver> promise = Utils::OpenHandle(this);
i::Isolate* isolate = promise->GetIsolate();
LOG_API(isolate, Promise, HasRejectHandler);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
if (promise->IsJSPromise()) {
i::Handle<i::JSPromise> js_promise = i::Handle<i::JSPromise>::cast(promise);
return js_promise->has_handler();
}
return false;
}
Local<Value> Promise::Result() {
i::Handle<i::JSReceiver> promise = Utils::OpenHandle(this);
i::Isolate* isolate = promise->GetIsolate();
LOG_API(isolate, Promise, Result);
i::Handle<i::JSPromise> js_promise = i::Handle<i::JSPromise>::cast(promise);
Utils::ApiCheck(js_promise->status() != kPending, "v8_Promise_Result",
"Promise is still pending");
i::Handle<i::Object> result(js_promise->result(), isolate);
return Utils::ToLocal(result);
}
Promise::PromiseState Promise::State() {
i::Handle<i::JSReceiver> promise = Utils::OpenHandle(this);
i::Isolate* isolate = promise->GetIsolate();
LOG_API(isolate, Promise, Status);
i::Handle<i::JSPromise> js_promise = i::Handle<i::JSPromise>::cast(promise);
return static_cast<PromiseState>(js_promise->status());
}
Local<Value> Proxy::GetTarget() {
i::Handle<i::JSProxy> self = Utils::OpenHandle(this);
i::Handle<i::Object> target(self->target(), self->GetIsolate());
return Utils::ToLocal(target);
}
Local<Value> Proxy::GetHandler() {
i::Handle<i::JSProxy> self = Utils::OpenHandle(this);
i::Handle<i::Object> handler(self->handler(), self->GetIsolate());
return Utils::ToLocal(handler);
}
bool Proxy::IsRevoked() {
i::Handle<i::JSProxy> self = Utils::OpenHandle(this);
return self->IsRevoked();
}
void Proxy::Revoke() {
i::Handle<i::JSProxy> self = Utils::OpenHandle(this);
i::JSProxy::Revoke(self);
}
MaybeLocal<Proxy> Proxy::New(Local<Context> context, Local<Object> local_target,
Local<Object> local_handler) {
PREPARE_FOR_EXECUTION(context, Proxy, New, Proxy);
i::Handle<i::JSReceiver> target = Utils::OpenHandle(*local_target);
i::Handle<i::JSReceiver> handler = Utils::OpenHandle(*local_handler);
Local<Proxy> result;
has_pending_exception =
!ToLocal<Proxy>(i::JSProxy::New(isolate, target, handler), &result);
RETURN_ON_FAILED_EXECUTION(Proxy);
RETURN_ESCAPED(result);
}
Local<String> WasmCompiledModule::GetWasmWireBytes() {
i::Handle<i::WasmModuleObject> obj =
i::Handle<i::WasmModuleObject>::cast(Utils::OpenHandle(this));
i::Handle<i::WasmCompiledModule> compiled_part =
i::handle(obj->compiled_module());
i::Handle<i::String> wire_bytes(compiled_part->shared()->module_bytes());
return Local<String>::Cast(Utils::ToLocal(wire_bytes));
}
// Currently, wasm modules are bound, both to Isolate and to
// the Context they were created in. The currently-supported means to
// decontextualize and then re-contextualize a module is via
// serialization/deserialization.
WasmCompiledModule::TransferrableModule
WasmCompiledModule::GetTransferrableModule() {
i::DisallowHeapAllocation no_gc;
WasmCompiledModule::SerializedModule compiled_part = Serialize();
Local<String> wire_bytes = GetWasmWireBytes();
size_t wire_size = static_cast<size_t>(wire_bytes->Length());
uint8_t* bytes = new uint8_t[wire_size];
wire_bytes->WriteOneByte(bytes, 0, wire_bytes->Length());
return TransferrableModule(
std::move(compiled_part),
std::make_pair(
std::unique_ptr<const uint8_t[]>(const_cast<const uint8_t*>(bytes)),
wire_size));
}
MaybeLocal<WasmCompiledModule> WasmCompiledModule::FromTransferrableModule(
Isolate* isolate,
const WasmCompiledModule::TransferrableModule& transferrable_module) {
MaybeLocal<WasmCompiledModule> ret =
Deserialize(isolate, AsCallerOwned(transferrable_module.compiled_code),
AsCallerOwned(transferrable_module.wire_bytes));
return ret;
}
WasmCompiledModule::SerializedModule WasmCompiledModule::Serialize() {
i::Handle<i::WasmModuleObject> obj =
i::Handle<i::WasmModuleObject>::cast(Utils::OpenHandle(this));
i::Handle<i::WasmCompiledModule> compiled_part =
i::handle(i::WasmCompiledModule::cast(obj->compiled_module()));
return i::wasm::SerializeNativeModule(obj->GetIsolate(), compiled_part);
}
MaybeLocal<WasmCompiledModule> WasmCompiledModule::Deserialize(
Isolate* isolate,
const WasmCompiledModule::CallerOwnedBuffer& serialized_module,
const WasmCompiledModule::CallerOwnedBuffer& wire_bytes) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::MaybeHandle<i::WasmCompiledModule> maybe_compiled_module =
i::wasm::DeserializeNativeModule(
i_isolate, {serialized_module.first, serialized_module.second},
{wire_bytes.first, wire_bytes.second});
i::Handle<i::WasmCompiledModule> compiled_module;
if (!maybe_compiled_module.ToHandle(&compiled_module)) {
return MaybeLocal<WasmCompiledModule>();
}
return Local<WasmCompiledModule>::Cast(
Utils::ToLocal(i::Handle<i::JSObject>::cast(
i::WasmModuleObject::New(i_isolate, compiled_module))));
}
MaybeLocal<WasmCompiledModule> WasmCompiledModule::DeserializeOrCompile(
Isolate* isolate,
const WasmCompiledModule::CallerOwnedBuffer& serialized_module,
const WasmCompiledModule::CallerOwnedBuffer& wire_bytes) {
MaybeLocal<WasmCompiledModule> ret =
Deserialize(isolate, serialized_module, wire_bytes);
if (!ret.IsEmpty()) {
return ret;
}
return Compile(isolate, wire_bytes.first, wire_bytes.second);
}
MaybeLocal<WasmCompiledModule> WasmCompiledModule::Compile(Isolate* isolate,
const uint8_t* start,
size_t length) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::wasm::ErrorThrower thrower(i_isolate, "WasmCompiledModule::Compile()");
if (!i::wasm::IsWasmCodegenAllowed(i_isolate, i_isolate->native_context())) {
return MaybeLocal<WasmCompiledModule>();
}
i::MaybeHandle<i::JSObject> maybe_compiled = i::wasm::SyncCompile(
i_isolate, &thrower, i::wasm::ModuleWireBytes(start, start + length));
if (maybe_compiled.is_null()) return MaybeLocal<WasmCompiledModule>();
return Local<WasmCompiledModule>::Cast(
Utils::ToLocal(maybe_compiled.ToHandleChecked()));
}
WasmModuleObjectBuilderStreaming::WasmModuleObjectBuilderStreaming(
Isolate* isolate)
: isolate_(isolate) {
MaybeLocal<Promise::Resolver> maybe_resolver =
Promise::Resolver::New(isolate->GetCurrentContext());
Local<Promise::Resolver> resolver = maybe_resolver.ToLocalChecked();
promise_.Reset(isolate, resolver->GetPromise());
if (i::FLAG_wasm_stream_compilation) {
i::Handle<i::JSPromise> promise = Utils::OpenHandle(*GetPromise());
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
streaming_decoder_ =
i_isolate->wasm_engine()
->compilation_manager()
->StartStreamingCompilation(i_isolate, handle(i_isolate->context()),
promise);
}
}
Local<Promise> WasmModuleObjectBuilderStreaming::GetPromise() {
return promise_.Get(isolate_);
}
void WasmModuleObjectBuilderStreaming::OnBytesReceived(const uint8_t* bytes,
size_t size) {
if (i::FLAG_wasm_stream_compilation) {
streaming_decoder_->OnBytesReceived(i::Vector<const uint8_t>(bytes, size));
return;
}
std::unique_ptr<uint8_t[]> cloned_bytes(new uint8_t[size]);
memcpy(cloned_bytes.get(), bytes, size);
received_buffers_.push_back(
Buffer(std::unique_ptr<const uint8_t[]>(
const_cast<const uint8_t*>(cloned_bytes.release())),
size));
total_size_ += size;
}
void WasmModuleObjectBuilderStreaming::Finish() {
if (i::FLAG_wasm_stream_compilation) {
streaming_decoder_->Finish();
return;
}
std::unique_ptr<uint8_t[]> wire_bytes(new uint8_t[total_size_]);
uint8_t* insert_at = wire_bytes.get();
for (size_t i = 0; i < received_buffers_.size(); ++i) {
const Buffer& buff = received_buffers_[i];
memcpy(insert_at, buff.first.get(), buff.second);
insert_at += buff.second;
}
// AsyncCompile makes its own copy of the wire bytes. This inefficiency
// will be resolved when we move to true streaming compilation.
i::wasm::AsyncCompile(reinterpret_cast<i::Isolate*>(isolate_),
Utils::OpenHandle(*promise_.Get(isolate_)),
{wire_bytes.get(), wire_bytes.get() + total_size_},
false);
}
void WasmModuleObjectBuilderStreaming::Abort(Local<Value> exception) {
Local<Promise> promise = GetPromise();
// The promise has already been resolved, e.g. because of a compilation
// error.
if (promise->State() != v8::Promise::kPending) return;
if (i::FLAG_wasm_stream_compilation) streaming_decoder_->Abort();
// If there is no exception, then we do not reject the promise. The reason is
// that 'no exception' indicates that we are in a ScriptForbiddenScope, which
// means that it is not allowed to reject the promise at the moment, or
// execute any other JavaScript code.
if (exception.IsEmpty()) return;
Local<Promise::Resolver> resolver = promise.As<Promise::Resolver>();
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate_);
i::HandleScope scope(i_isolate);
Local<Context> context = Utils::ToLocal(handle(i_isolate->context()));
auto maybe = resolver->Reject(context, exception);
CHECK_IMPLIES(!maybe.FromMaybe(false), i_isolate->has_scheduled_exception());
}
WasmModuleObjectBuilderStreaming::~WasmModuleObjectBuilderStreaming() {
promise_.Reset();
}
void WasmModuleObjectBuilder::OnBytesReceived(const uint8_t* bytes,
size_t size) {
std::unique_ptr<uint8_t[]> cloned_bytes(new uint8_t[size]);
memcpy(cloned_bytes.get(), bytes, size);
received_buffers_.push_back(
Buffer(std::unique_ptr<const uint8_t[]>(
const_cast<const uint8_t*>(cloned_bytes.release())),
size));
total_size_ += size;
}
MaybeLocal<WasmCompiledModule> WasmModuleObjectBuilder::Finish() {
std::unique_ptr<uint8_t[]> wire_bytes(new uint8_t[total_size_]);
uint8_t* insert_at = wire_bytes.get();
for (size_t i = 0; i < received_buffers_.size(); ++i) {
const Buffer& buff = received_buffers_[i];
memcpy(insert_at, buff.first.get(), buff.second);
insert_at += buff.second;
}
return WasmCompiledModule::Compile(isolate_, wire_bytes.get(), total_size_);
}
// static
v8::ArrayBuffer::Allocator* v8::ArrayBuffer::Allocator::NewDefaultAllocator() {
return new ArrayBufferAllocator();
}
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);
if (self->has_guard_region()) {
// Since this is being externalized, the Wasm Allocation Tracker can no
// longer track it.
//
// TODO(eholk): Find a way to track this across externalization
isolate->wasm_engine()->allocation_tracker()->ReleaseAddressSpace(
self->allocation_length());
}
isolate->heap()->UnregisterArrayBuffer(*self);
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.allocation_base_ = self->allocation_base();
contents.allocation_length_ = self->allocation_length();
contents.allocation_mode_ = self->has_guard_region()
? Allocator::AllocationMode::kReservation
: Allocator::AllocationMode::kNormal;
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(isolate, ArrayBuffer, Neuter);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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, ArrayBuffer, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::Handle<i::JSArrayBuffer> obj =
i_isolate->factory()->NewJSArrayBuffer(i::SharedFlag::kNotShared);
// TODO(jbroman): It may be useful in the future to provide a MaybeLocal
// version that throws an exception or otherwise does not crash.
if (!i::JSArrayBuffer::SetupAllocatingData(obj, i_isolate, byte_length)) {
i::FatalProcessOutOfMemory("v8::ArrayBuffer::New");
}
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 != nullptr);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, ArrayBuffer, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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);
size_t byte_offset = i::NumberToSize(self->byte_offset());
size_t bytes_to_copy =
i::Min(byte_length, i::NumberToSize(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());
}
static_assert(v8::TypedArray::kMaxLength == i::Smi::kMaxValue,
"v8::TypedArray::kMaxLength must match i::Smi::kMaxValue");
#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, Type##Array, New); \
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate); \
if (!Utils::ApiCheck(length <= kMaxLength, \
"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, Type##Array, New); \
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate); \
if (!Utils::ApiCheck( \
length <= kMaxLength, \
"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, DataView, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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, DataView, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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);
if (self->has_guard_region()) {
// Since this is being externalized, the Wasm Allocation Tracker can no
// longer track it.
//
// TODO(eholk): Find a way to track this across externalization
isolate->wasm_engine()->allocation_tracker()->ReleaseAddressSpace(
self->allocation_length());
}
isolate->heap()->UnregisterArrayBuffer(*self);
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.allocation_base_ = self->allocation_base();
contents.allocation_length_ = self->allocation_length();
contents.allocation_mode_ =
self->has_guard_region()
? ArrayBufferAllocator::Allocator::AllocationMode::kReservation
: ArrayBufferAllocator::Allocator::AllocationMode::kNormal;
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, SharedArrayBuffer, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::Handle<i::JSArrayBuffer> obj =
i_isolate->factory()->NewJSArrayBuffer(i::SharedFlag::kShared);
// TODO(jbroman): It may be useful in the future to provide a MaybeLocal
// version that throws an exception or otherwise does not crash.
if (!i::JSArrayBuffer::SetupAllocatingData(obj, i_isolate, byte_length, true,
i::SharedFlag::kShared)) {
i::FatalProcessOutOfMemory("v8::SharedArrayBuffer::New");
}
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 != nullptr);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, SharedArrayBuffer, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::Handle<i::Symbol> result = i_isolate->factory()->NewSymbol();
if (!name.IsEmpty()) result->set_name(*Utils::OpenHandle(*name));
return Utils::ToLocal(result);
}
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);
return Utils::ToLocal(i_isolate->SymbolFor(
i::Heap::kPublicSymbolTableRootIndex, i_name, false));
}
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);
return Utils::ToLocal(
i_isolate->SymbolFor(i::Heap::kApiSymbolTableRootIndex, i_name, false));
}
#define WELL_KNOWN_SYMBOLS(V) \
V(HasInstance, has_instance) \
V(IsConcatSpreadable, is_concat_spreadable) \
V(Iterator, iterator) \
V(Match, match) \
V(Replace, replace) \
V(Search, search) \
V(Split, split) \
V(ToPrimitive, to_primitive) \
V(ToStringTag, to_string_tag) \
V(Unscopables, unscopables)
#define SYMBOL_GETTER(Name, name) \
Local<Symbol> v8::Symbol::Get##Name(Isolate* isolate) { \
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate); \
return Utils::ToLocal(i_isolate->factory()->name##_symbol()); \
}
WELL_KNOWN_SYMBOLS(SYMBOL_GETTER)
#undef SYMBOL_GETTER
#undef WELL_KNOWN_SYMBOLS
Local<Private> v8::Private::New(Isolate* isolate, Local<String> name) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
LOG_API(i_isolate, Private, New);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::Handle<i::Symbol> symbol = i_isolate->factory()->NewPrivateSymbol();
if (!name.IsEmpty()) symbol->set_name(*Utils::OpenHandle(*name));
Local<Symbol> result = Utils::ToLocal(symbol);
return v8::Local<Private>(reinterpret_cast<Private*>(*result));
}
Local<Private> v8::Private::ForApi(Isolate* isolate, Local<String> name) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::Handle<i::String> i_name = Utils::OpenHandle(*name);
Local<Symbol> result = Utils::ToLocal(i_isolate->SymbolFor(
i::Heap::kApiPrivateSymbolTableRootIndex, i_name, true));
return v8::Local<Private>(reinterpret_cast<Private*>(*result));
}
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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(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_NO_SCRIPT_NO_EXCEPTION(internal_isolate);
i::Handle<i::Object> result = internal_isolate->factory()->NewNumber(value);
return Utils::IntegerToLocal(result);
}
void Isolate::ReportExternalAllocationLimitReached() {
i::Heap* heap = reinterpret_cast<i::Isolate*>(this)->heap();
if (heap->gc_state() != i::Heap::NOT_IN_GC) return;
heap->ReportExternalMemoryPressure();
}
void Isolate::CheckMemoryPressure() {
i::Heap* heap = reinterpret_cast<i::Isolate*>(this)->heap();
if (heap->gc_state() != i::Heap::NOT_IN_GC) return;
heap->CheckMemoryPressure();
}
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() != nullptr;
}
v8::Local<v8::Context> Isolate::GetCurrentContext() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Context* context = isolate->context();
if (context == nullptr) return Local<Context>();
i::Context* native_context = context->native_context();
if (native_context == nullptr) 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<v8::Context> Isolate::GetEnteredOrMicrotaskContext() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Handle<i::Object> last;
if (isolate->handle_scope_implementer()
->MicrotaskContextIsLastEnteredContext()) {
last = isolate->handle_scope_implementer()->MicrotaskContext();
} else {
last = isolate->handle_scope_implementer()->LastEnteredContext();
}
if (last.is_null()) return Local<Context>();
return Utils::ToLocal(i::Handle<i::Context>::cast(last));
}
v8::Local<v8::Context> Isolate::GetIncumbentContext() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Handle<i::Context> context = isolate->GetIncumbentContext();
return Utils::ToLocal(context);
}
v8::Local<Value> Isolate::ThrowException(v8::Local<v8::Value> value) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
ENTER_V8_DO_NOT_USE(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::AddGCPrologueCallback(GCCallbackWithData callback, void* data,
GCType gc_type) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->AddGCPrologueCallback(callback, gc_type, data);
}
void Isolate::RemoveGCPrologueCallback(GCCallbackWithData callback,
void* data) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->RemoveGCPrologueCallback(callback, data);
}
void Isolate::AddGCEpilogueCallback(GCCallbackWithData callback, void* data,
GCType gc_type) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->AddGCEpilogueCallback(callback, gc_type, data);
}
void Isolate::RemoveGCEpilogueCallback(GCCallbackWithData callback,
void* data) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->RemoveGCEpilogueCallback(callback, data);
}
static void CallGCCallbackWithoutData(Isolate* isolate, GCType type,
GCCallbackFlags flags, void* data) {
reinterpret_cast<Isolate::GCCallback>(data)(isolate, type, flags);
}
void Isolate::AddGCPrologueCallback(GCCallback callback, GCType gc_type) {
void* data = reinterpret_cast<void*>(callback);
AddGCPrologueCallback(CallGCCallbackWithoutData, data, gc_type);
}
void Isolate::RemoveGCPrologueCallback(GCCallback callback) {
void* data = reinterpret_cast<void*>(callback);
RemoveGCPrologueCallback(CallGCCallbackWithoutData, data);
}
void Isolate::AddGCEpilogueCallback(GCCallback callback, GCType gc_type) {
void* data = reinterpret_cast<void*>(callback);
AddGCEpilogueCallback(CallGCCallbackWithoutData, data, gc_type);
}
void Isolate::RemoveGCEpilogueCallback(GCCallback callback) {
void* data = reinterpret_cast<void*>(callback);
RemoveGCEpilogueCallback(CallGCCallbackWithoutData, data);
}
void Isolate::SetEmbedderHeapTracer(EmbedderHeapTracer* tracer) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->SetEmbedderHeapTracer(tracer);
}
void Isolate::SetGetExternallyAllocatedMemoryInBytesCallback(
GetExternallyAllocatedMemoryInBytesCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->SetGetExternallyAllocatedMemoryInBytesCallback(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, i::GarbageCollectionReason::kTesting,
kGCCallbackFlagForced);
} else {
DCHECK_EQ(kFullGarbageCollection, type);
reinterpret_cast<i::Isolate*>(this)->heap()->CollectAllGarbage(
i::Heap::kAbortIncrementalMarkingMask,
i::GarbageCollectionReason::kTesting, 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);
return IsolateNewImpl(isolate, params);
}
// This is separate so that tests can provide a different |isolate|.
Isolate* IsolateNewImpl(internal::Isolate* isolate,
const v8::Isolate::CreateParams& params) {
Isolate* v8_isolate = reinterpret_cast<Isolate*>(isolate);
CHECK_NOT_NULL(params.array_buffer_allocator);
isolate->set_array_buffer_allocator(params.array_buffer_allocator);
if (params.snapshot_blob != nullptr) {
isolate->set_snapshot_blob(params.snapshot_blob);
} else {
isolate->set_snapshot_blob(i::Snapshot::DefaultSnapshotBlob());
}
if (params.entry_hook) {
#ifdef V8_USE_SNAPSHOT
// Setting a FunctionEntryHook is only supported in no-snapshot builds.
Utils::ApiCheck(
false, "v8::Isolate::New",
"Setting a FunctionEntryHook is only supported in no-snapshot builds.");
#endif
isolate->set_function_entry_hook(params.entry_hook);
}
auto code_event_handler = params.code_event_handler;
#ifdef ENABLE_GDB_JIT_INTERFACE
if (code_event_handler == nullptr && i::FLAG_gdbjit) {
code_event_handler = i::GDBJITInterface::EventHandler;
}
#endif // ENABLE_GDB_JIT_INTERFACE
if (code_event_handler) {
isolate->InitializeLoggingAndCounters();
isolate->logger()->SetCodeEventHandler(kJitCodeEventDefault,
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);
}
isolate->set_api_external_references(params.external_references);
isolate->set_allow_atomics_wait(params.allow_atomics_wait);
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 snapshot data was provided and we failed to deserialize it must
// have been corrupted.
CHECK_NULL(isolate->snapshot_blob());
base::ElapsedTimer timer;
if (i::FLAG_profile_deserialization) timer.Start();
isolate->Init(nullptr);
if (i::FLAG_profile_deserialization) {
double ms = timer.Elapsed().InMillisecondsF();
i::PrintF("[Initializing isolate from scratch took %0.3f ms]\n", ms);
}
}
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::DumpAndResetStats() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->DumpAndResetStats();
}
void Isolate::DiscardThreadSpecificMetadata() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->DiscardPerThreadDataForThisThread();
}
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();
}
void Isolate::SetAbortOnUncaughtExceptionCallback(
AbortOnUncaughtExceptionCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->SetAbortOnUncaughtExceptionCallback(callback);
}
void Isolate::SetHostImportModuleDynamicallyCallback(
HostImportModuleDynamicallyCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->SetHostImportModuleDynamicallyCallback(callback);
}
void Isolate::SetHostInitializeImportMetaObjectCallback(
HostInitializeImportMetaObjectCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->SetHostInitializeImportMetaObjectCallback(callback);
}
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_->handle_scope_implementer()->IncrementMicrotasksSuppressions();
}
Isolate::SuppressMicrotaskExecutionScope::~SuppressMicrotaskExecutionScope() {
isolate_->handle_scope_implementer()->DecrementMicrotasksSuppressions();
isolate_->handle_scope_implementer()->DecrementCallDepth();
}
i::Object** Isolate::GetDataFromSnapshotOnce(size_t index) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(this);
i::FixedArray* list = i_isolate->heap()->serialized_objects();
return GetSerializedDataFromFixedArray(i_isolate, list, index);
}
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();
heap_statistics->malloced_memory_ =
isolate->allocator()->GetCurrentMemoryUsage();
heap_statistics->peak_malloced_memory_ =
isolate->allocator()->GetMaxMemoryUsage();
heap_statistics->number_of_native_contexts_ = heap->NumberOfNativeContexts();
heap_statistics->number_of_detached_contexts_ =
heap->NumberOfDetachedContexts();
heap_statistics->does_zap_garbage_ = heap->ShouldZapGarbage();
}
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() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Heap* heap = isolate->heap();
return heap->NumberOfTrackedHeapObjectTypes();
}
bool Isolate::GetHeapObjectStatisticsAtLastGC(
HeapObjectStatistics* object_statistics, size_t type_index) {
if (!object_statistics) return false;
if (V8_LIKELY(!i::FLAG_gc_stats)) return false;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::Heap* heap = isolate->heap();
if (type_index >= heap->NumberOfTrackedHeapObjectTypes()) return false;
const char* object_type;
const char* object_sub_type;
size_t object_count = heap->ObjectCountAtLastGC(type_index);
size_t object_size = heap->ObjectSizeAtLastGC(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;
}
bool Isolate::GetHeapCodeAndMetadataStatistics(
HeapCodeStatistics* code_statistics) {
if (!code_statistics) return false;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->CollectCodeStatistics();
code_statistics->code_and_metadata_size_ = isolate->code_and_metadata_size();
code_statistics->bytecode_and_metadata_size_ =
isolate->bytecode_and_metadata_size();
return true;
}
void Isolate::GetStackSample(const RegisterState& state, void** frames,
size_t frames_limit, SampleInfo* sample_info) {
RegisterState regs = state;
if (TickSample::GetStackSample(this, &regs, TickSample::kSkipCEntryFrame,
frames, frames_limit, sample_info)) {
return;
}
sample_info->frames_count = 0;
sample_info->vm_state = OTHER;
sample_info->external_callback_entry = nullptr;
}
size_t Isolate::NumberOfPhantomHandleResetsSinceLastCall() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
size_t result = isolate->global_handles()->NumberOfPhantomHandleResets();
isolate->global_handles()->ResetNumberOfPhantomHandleResets();
return result;
}
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::AddBeforeCallEnteredCallback(BeforeCallEnteredCallback callback) {
if (callback == nullptr) return;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->AddBeforeCallEnteredCallback(callback);
}
void Isolate::RemoveBeforeCallEnteredCallback(
BeforeCallEnteredCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->RemoveBeforeCallEnteredCallback(callback);
}
void Isolate::AddCallCompletedCallback(CallCompletedCallback callback) {
if (callback == nullptr) 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::AddCallCompletedCallback(
DeprecatedCallCompletedCallback callback) {
AddCallCompletedCallback(reinterpret_cast<CallCompletedCallback>(callback));
}
void Isolate::RemoveCallCompletedCallback(
DeprecatedCallCompletedCallback callback) {
RemoveCallCompletedCallback(
reinterpret_cast<CallCompletedCallback>(callback));
}
void Isolate::SetPromiseHook(PromiseHook hook) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->SetPromiseHook(hook);
}
void Isolate::SetPromiseRejectCallback(PromiseRejectCallback callback) {
if (callback == nullptr) return;
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->SetPromiseRejectCallback(callback);
}
void Isolate::RunMicrotasks() {
DCHECK_NE(MicrotasksPolicy::kScoped, GetMicrotasksPolicy());
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::TUPLE3_TYPE, i::NOT_TENURED));
SET_FIELD_WRAPPED(callback_info, set_callback, microtask);
SET_FIELD_WRAPPED(callback_info, set_js_callback,
callback_info->redirected_callback());
SET_FIELD_WRAPPED(callback_info, set_data, data);
isolate->EnqueueMicrotask(callback_info);
}
void Isolate::SetAutorunMicrotasks(bool autorun) {
SetMicrotasksPolicy(
autorun ? MicrotasksPolicy::kAuto : MicrotasksPolicy::kExplicit);
}
bool Isolate::WillAutorunMicrotasks() const {
return GetMicrotasksPolicy() == MicrotasksPolicy::kAuto;
}
void Isolate::SetMicrotasksPolicy(MicrotasksPolicy policy) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->handle_scope_implementer()->set_microtasks_policy(policy);
}
MicrotasksPolicy Isolate::GetMicrotasksPolicy() const {
i::Isolate* isolate =
reinterpret_cast<i::Isolate*>(const_cast<Isolate*>(this));
return isolate->handle_scope_implementer()->microtasks_policy();
}
void Isolate::AddMicrotasksCompletedCallback(
MicrotasksCompletedCallback callback) {
DCHECK(callback);
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->AddMicrotasksCompletedCallback(callback);
}
void Isolate::RemoveMicrotasksCompletedCallback(
MicrotasksCompletedCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->RemoveMicrotasksCompletedCallback(callback);
}
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->counters()->ResetCounterFunction(callback);
}
void Isolate::SetCreateHistogramFunction(CreateHistogramCallback callback) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->counters()->ResetCreateHistogramFunction(callback);
}
void Isolate::SetAddHistogramSampleFunction(
AddHistogramSampleCallback callback) {
reinterpret_cast<i::Isolate*>(this)
->counters()
->SetAddHistogramSampleFunction(callback);
}
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());
TRACE_EVENT0("v8", "V8.GCLowMemoryNotification");
isolate->heap()->CollectAllAvailableGarbage(
i::GarbageCollectionReason::kLowMemoryNotification);
}
{
i::HeapIterator iterator(isolate->heap());
i::HeapObject* obj;
while ((obj = iterator.next()) != nullptr) {
if (obj->IsAbstractCode()) {
i::AbstractCode::cast(obj)->DropStackFrameCache();
}
}
}
}
int Isolate::ContextDisposedNotification(bool dependant_context) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->heap()->NotifyContextDisposed(dependant_context);
}
void Isolate::IsolateInForegroundNotification() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->IsolateInForegroundNotification();
}
void Isolate::IsolateInBackgroundNotification() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->IsolateInBackgroundNotification();
}
void Isolate::MemoryPressureNotification(MemoryPressureLevel level) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
bool on_isolate_thread =
v8::Locker::IsActive()
? isolate->thread_manager()->IsLockedByCurrentThread()
: i::ThreadId::Current().Equals(isolate->thread_id());
isolate->heap()->MemoryPressureNotification(level, on_isolate_thread);
isolate->allocator()->MemoryPressureNotification(level);
isolate->compiler_dispatcher()->MemoryPressureNotification(level,
on_isolate_thread);
}
void Isolate::SetRAILMode(RAILMode rail_mode) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->SetRAILMode(rail_mode);
}
void Isolate::IncreaseHeapLimitForDebugging() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->IncreaseHeapLimitForDebugging();
}
void Isolate::RestoreOriginalHeapLimit() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->heap()->RestoreOriginalHeapLimit();
}
bool Isolate::IsHeapLimitIncreasedForDebugging() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->heap()->IsHeapLimitIncreasedForDebugging();
}
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->heap()->memory_allocator()->code_range()->valid()) {
*start = isolate->heap()->memory_allocator()->code_range()->start();
*length_in_bytes =
isolate->heap()->memory_allocator()->code_range()->size();
} else {
*start = nullptr;
*length_in_bytes = 0;
}
}
#define CALLBACK_SETTER(ExternalName, Type, InternalName) \
void Isolate::Set##ExternalName(Type callback) { \
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this); \
isolate->set_##InternalName(callback); \
}
CALLBACK_SETTER(FatalErrorHandler, FatalErrorCallback, exception_behavior)
CALLBACK_SETTER(OOMErrorHandler, OOMErrorCallback, oom_behavior)
CALLBACK_SETTER(AllowCodeGenerationFromStringsCallback,
AllowCodeGenerationFromStringsCallback, allow_code_gen_callback)
CALLBACK_SETTER(AllowWasmCodeGenerationCallback,
AllowWasmCodeGenerationCallback, allow_wasm_code_gen_callback)
CALLBACK_SETTER(WasmModuleCallback, ExtensionCallback, wasm_module_callback)
CALLBACK_SETTER(WasmInstanceCallback, ExtensionCallback, wasm_instance_callback)
CALLBACK_SETTER(WasmCompileStreamingCallback, ApiImplementationCallback,
wasm_compile_streaming_callback)
bool Isolate::IsDead() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->IsDead();
}
bool Isolate::AddMessageListener(MessageCallback that, Local<Value> data) {
return AddMessageListenerWithErrorLevel(that, kMessageError, data);
}
bool Isolate::AddMessageListenerWithErrorLevel(MessageCallback that,
int message_levels,
Local<Value> data) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
i::Handle<i::TemplateList> list = isolate->factory()->message_listeners();
i::Handle<i::FixedArray> listener = isolate->factory()->NewFixedArray(3);
i::Handle<i::Foreign> foreign =
isolate->factory()->NewForeign(FUNCTION_ADDR(that));
listener->set(0, *foreign);
listener->set(1, data.IsEmpty() ? isolate->heap()->undefined_value()
: *Utils::OpenHandle(*data));
listener->set(2, i::Smi::FromInt(message_levels));
list = i::TemplateList::Add(isolate, list, listener);
isolate->heap()->SetMessageListeners(*list);
return true;
}
void Isolate::RemoveMessageListeners(MessageCallback that) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope scope(isolate);
i::DisallowHeapAllocation no_gc;
i::TemplateList* listeners = isolate->heap()->message_listeners();
for (int i = 0; i < listeners->length(); i++) {
if (listeners->get(i)->IsUndefined(isolate)) continue; // skip deleted ones
i::FixedArray* listener = i::FixedArray::cast(listeners->get(i));
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);
}
bool Isolate::IsInUse() {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
return isolate->IsInUse();
}
void Isolate::VisitHandlesWithClassIds(PersistentHandleVisitor* visitor) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::DisallowHeapAllocation no_allocation;
isolate->global_handles()->IterateAllRootsWithClassIds(visitor);
}
void Isolate::VisitHandlesForPartialDependence(
PersistentHandleVisitor* visitor) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::DisallowHeapAllocation no_allocation;
isolate->global_handles()->IterateAllRootsInNewSpaceWithClassIds(visitor);
}
void Isolate::VisitWeakHandles(PersistentHandleVisitor* visitor) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
i::DisallowHeapAllocation no_allocation;
isolate->global_handles()->IterateWeakRootsInNewSpaceWithClassIds(visitor);
}
void Isolate::SetAllowAtomicsWait(bool allow) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
isolate->set_allow_atomics_wait(allow);
}
MicrotasksScope::MicrotasksScope(Isolate* isolate, MicrotasksScope::Type type)
: isolate_(reinterpret_cast<i::Isolate*>(isolate)),
run_(type == MicrotasksScope::kRunMicrotasks) {
auto handle_scope_implementer = isolate_->handle_scope_implementer();
if (run_) handle_scope_implementer->IncrementMicrotasksScopeDepth();
#ifdef DEBUG
if (!run_) handle_scope_implementer->IncrementDebugMicrotasksScopeDepth();
#endif
}
MicrotasksScope::~MicrotasksScope() {
auto handle_scope_implementer = isolate_->handle_scope_implementer();
if (run_) {
handle_scope_implementer->DecrementMicrotasksScopeDepth();
if (MicrotasksPolicy::kScoped ==
handle_scope_implementer->microtasks_policy()) {
PerformCheckpoint(reinterpret_cast<Isolate*>(isolate_));
}
}
#ifdef DEBUG
if (!run_) handle_scope_implementer->DecrementDebugMicrotasksScopeDepth();
#endif
}
void MicrotasksScope::PerformCheckpoint(Isolate* v8Isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8Isolate);
if (IsExecutionTerminatingCheck(isolate)) return;
auto handle_scope_implementer = isolate->handle_scope_implementer();
if (!handle_scope_implementer->GetMicrotasksScopeDepth() &&
!handle_scope_implementer->HasMicrotasksSuppressions()) {
isolate->RunMicrotasks();
}
}
int MicrotasksScope::GetCurrentDepth(Isolate* v8Isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8Isolate);
return isolate->handle_scope_implementer()->GetMicrotasksScopeDepth();
}
bool MicrotasksScope::IsRunningMicrotasks(Isolate* v8Isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8Isolate);
return isolate->IsRunningMicrotasks();
}
String::Utf8Value::Utf8Value(v8::Isolate* isolate, v8::Local<v8::Value> obj)
: str_(nullptr), length_(0) {
if (obj.IsEmpty()) return;
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8_DO_NOT_USE(i_isolate);
i::HandleScope scope(i_isolate);
Local<Context> context = isolate->GetCurrentContext();
TryCatch try_catch(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, i_isolate);
str_ = i::NewArray<char>(length_ + 1);
str->WriteUtf8(str_);
}
String::Utf8Value::Utf8Value(v8::Local<v8::Value> obj)
: String::Utf8Value::Utf8Value(Isolate::GetCurrent(), obj) {}
String::Utf8Value::~Utf8Value() {
i::DeleteArray(str_);
}
String::Value::Value(v8::Isolate* isolate, v8::Local<v8::Value> obj)
: str_(nullptr), length_(0) {
if (obj.IsEmpty()) return;
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8_DO_NOT_USE(i_isolate);
i::HandleScope scope(i_isolate);
Local<Context> context = isolate->GetCurrentContext();
TryCatch try_catch(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(v8::Local<v8::Value> obj)
: String::Value::Value(v8::Isolate::GetCurrent(), obj) {}
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, New); \
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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(Isolate* isolate,
Local<Value> exception) {
i::Handle<i::Object> obj = Utils::OpenHandle(*exception);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::HandleScope scope(i_isolate);
return Utils::MessageToLocal(
scope.CloseAndEscape(i_isolate->CreateMessage(obj, nullptr)));
}
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_NO_SCRIPT_NO_EXCEPTION(isolate);
return Utils::StackTraceToLocal(isolate->GetDetailedStackTrace(js_obj));
}
// --- D e b u g S u p p o r t ---
bool Debug::SetDebugEventListener(Isolate* isolate, EventCallback that,
Local<Value> data) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
if (that == nullptr) {
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i::HandleScope scope(i_isolate);
i_isolate->debug()->SetDebugDelegate(nullptr, false);
} else {
// Might create the Debug context.
ENTER_V8_FOR_NEW_CONTEXT(i_isolate);
i::HandleScope scope(i_isolate);
i::Handle<i::Object> i_data = i_isolate->factory()->undefined_value();
if (!data.IsEmpty()) i_data = Utils::OpenHandle(*data);
i::NativeDebugDelegate* delegate =
new i::NativeDebugDelegate(i_isolate, that, i_data);
i_isolate->debug()->SetDebugDelegate(delegate, true);
}
return true;
}
void Debug::DebugBreak(Isolate* isolate) { debug::DebugBreak(isolate); }
void Debug::CancelDebugBreak(Isolate* isolate) {
debug::CancelDebugBreak(isolate);
}
bool Debug::CheckDebugBreak(Isolate* isolate) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
return internal_isolate->stack_guard()->CheckDebugBreak();
}
void Debug::SetMessageHandler(Isolate* isolate,
v8::Debug::MessageHandler handler) {}
void Debug::SendCommand(Isolate* isolate, const uint16_t* command, int length,
ClientData* client_data) {}
MaybeLocal<Value> Debug::Call(Local<Context> context,
v8::Local<v8::Function> fun,
v8::Local<v8::Value> data) {
return debug::Call(context, fun, data);
}
void Debug::ProcessDebugMessages(Isolate* isolate) {}
Local<Context> Debug::GetDebugContext(Isolate* isolate) {
return debug::GetDebugContext(isolate);
}
MaybeLocal<Context> Debug::GetDebuggedContext(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
if (!i_isolate->debug()->in_debug_scope()) return MaybeLocal<Context>();
i::Handle<i::Object> calling = i_isolate->GetCallingNativeContext();
if (calling.is_null()) return MaybeLocal<Context>();
return Utils::ToLocal(i::Handle<i::Context>::cast(calling));
}
void Debug::SetLiveEditEnabled(Isolate* isolate, bool enable) {
debug::SetLiveEditEnabled(isolate, enable);
}
bool Debug::IsTailCallEliminationEnabled(Isolate* isolate) { return false; }
void Debug::SetTailCallEliminationEnabled(Isolate* isolate, bool enabled) {
}
MaybeLocal<Array> Debug::GetInternalProperties(Isolate* v8_isolate,
Local<Value> value) {
return debug::GetInternalProperties(v8_isolate, value);
}
void debug::SetContextId(Local<Context> context, int id) {
Utils::OpenHandle(*context)->set_debug_context_id(i::Smi::FromInt(id));
}
int debug::GetContextId(Local<Context> context) {
i::Object* value = Utils::OpenHandle(*context)->debug_context_id();
return (value->IsSmi()) ? i::Smi::ToInt(value) : 0;
}
Local<Context> debug::GetDebugContext(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
return Utils::ToLocal(i_isolate->debug()->GetDebugContext());
}
MaybeLocal<Value> debug::Call(Local<Context> context,
v8::Local<v8::Function> fun,
v8::Local<v8::Value> data) {
PREPARE_FOR_EXECUTION(context, 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);
}
void debug::SetLiveEditEnabled(Isolate* isolate, bool enable) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
internal_isolate->debug()->set_live_edit_enabled(enable);
}
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();
}
MaybeLocal<Array> debug::GetInternalProperties(Isolate* v8_isolate,
Local<Value> value) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(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);
}
void debug::ChangeBreakOnException(Isolate* isolate, ExceptionBreakState type) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
internal_isolate->debug()->ChangeBreakOnException(
i::BreakException, type == BreakOnAnyException);
internal_isolate->debug()->ChangeBreakOnException(i::BreakUncaughtException,
type != NoBreakOnException);
}
void debug::SetBreakPointsActive(Isolate* v8_isolate, bool is_active) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
isolate->debug()->set_break_points_active(is_active);
}
void debug::SetOutOfMemoryCallback(Isolate* isolate,
OutOfMemoryCallback callback, void* data) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(i_isolate);
i_isolate->heap()->SetOutOfMemoryCallback(callback, data);
}
void debug::PrepareStep(Isolate* v8_isolate, StepAction action) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_DO_NOT_USE(isolate);
CHECK(isolate->debug()->CheckExecutionState());
// Clear all current stepping setup.
isolate->debug()->ClearStepping();
// Prepare step.
isolate->debug()->PrepareStep(static_cast<i::StepAction>(action));
}
void debug::ClearStepping(Isolate* v8_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
// Clear all current stepping setup.
isolate->debug()->ClearStepping();
}
void debug::BreakRightNow(Isolate* v8_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_DO_NOT_USE(isolate);
isolate->debug()->HandleDebugBreak(i::kIgnoreIfAllFramesBlackboxed);
}
bool debug::AllFramesOnStackAreBlackboxed(Isolate* v8_isolate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_DO_NOT_USE(isolate);
return isolate->debug()->AllFramesOnStackAreBlackboxed();
}
v8::Isolate* debug::Script::GetIsolate() const {
return reinterpret_cast<v8::Isolate*>(Utils::OpenHandle(this)->GetIsolate());
}
ScriptOriginOptions debug::Script::OriginOptions() const {
return Utils::OpenHandle(this)->origin_options();
}
bool debug::Script::WasCompiled() const {
return Utils::OpenHandle(this)->compilation_state() ==
i::Script::COMPILATION_STATE_COMPILED;
}
bool debug::Script::IsEmbedded() const {
i::Handle<i::Script> script = Utils::OpenHandle(this);
return script->context_data() == script->GetHeap()->uninitialized_symbol();
}
int debug::Script::Id() const { return Utils::OpenHandle(this)->id(); }
int debug::Script::LineOffset() const {
return Utils::OpenHandle(this)->line_offset();
}
int debug::Script::ColumnOffset() const {
return Utils::OpenHandle(this)->column_offset();
}
std::vector<int> debug::Script::LineEnds() const {
i::Handle<i::Script> script = Utils::OpenHandle(this);
if (script->type() == i::Script::TYPE_WASM) return std::vector<int>();
i::Isolate* isolate = script->GetIsolate();
i::HandleScope scope(isolate);
i::Script::InitLineEnds(script);
CHECK(script->line_ends()->IsFixedArray());
i::Handle<i::FixedArray> line_ends(i::FixedArray::cast(script->line_ends()));
std::vector<int> result(line_ends->length());
for (int i = 0; i < line_ends->length(); ++i) {
i::Smi* line_end = i::Smi::cast(line_ends->get(i));
result[i] = line_end->value();
}
return result;
}
MaybeLocal<String> debug::Script::Name() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
i::HandleScope handle_scope(isolate);
i::Handle<i::Script> script = Utils::OpenHandle(this);
i::Handle<i::Object> value(script->name(), isolate);
if (!value->IsString()) return MaybeLocal<String>();
return Utils::ToLocal(
handle_scope.CloseAndEscape(i::Handle<i::String>::cast(value)));
}
MaybeLocal<String> debug::Script::SourceURL() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
i::HandleScope handle_scope(isolate);
i::Handle<i::Script> script = Utils::OpenHandle(this);
i::Handle<i::Object> value(script->source_url(), isolate);
if (!value->IsString()) return MaybeLocal<String>();
return Utils::ToLocal(
handle_scope.CloseAndEscape(i::Handle<i::String>::cast(value)));
}
MaybeLocal<String> debug::Script::SourceMappingURL() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
i::HandleScope handle_scope(isolate);
i::Handle<i::Script> script = Utils::OpenHandle(this);
i::Handle<i::Object> value(script->source_mapping_url(), isolate);
if (!value->IsString()) return MaybeLocal<String>();
return Utils::ToLocal(
handle_scope.CloseAndEscape(i::Handle<i::String>::cast(value)));
}
Maybe<int> debug::Script::ContextId() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
i::HandleScope handle_scope(isolate);
i::Handle<i::Script> script = Utils::OpenHandle(this);
i::Object* value = script->context_data();
if (value->IsSmi()) return Just(i::Smi::ToInt(value));
return Nothing<int>();
}
MaybeLocal<String> debug::Script::Source() const {
i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
i::HandleScope handle_scope(isolate);
i::Handle<i::Script> script = Utils::OpenHandle(this);
i::Handle<i::Object> value(script->source(), isolate);
if (!value->IsString()) return MaybeLocal<String>();
return Utils::ToLocal(
handle_scope.CloseAndEscape(i::Handle<i::String>::cast(value)));
}
bool debug::Script::IsWasm() const {
return Utils::OpenHandle(this)->type() == i::Script::TYPE_WASM;
}
bool debug::Script::IsModule() const {
return Utils::OpenHandle(this)->origin_options().IsModule();
}
namespace {
int GetSmiValue(i::Handle<i::FixedArray> array, int index) {
return i::Smi::ToInt(array->get(index));
}
bool CompareBreakLocation(const i::BreakLocation& loc1,
const i::BreakLocation& loc2) {
return loc1.position() < loc2.position();
}
} // namespace
bool debug::Script::GetPossibleBreakpoints(
const debug::Location& start, const debug::Location& end,
bool restrict_to_function,
std::vector<debug::BreakLocation>* locations) const {
CHECK(!start.IsEmpty());
i::Handle<i::Script> script = Utils::OpenHandle(this);
if (script->type() == i::Script::TYPE_WASM) {
i::WasmSharedModuleData* shared =
i::WasmCompiledModule::cast(script->wasm_compiled_module())->shared();
return shared->GetPossibleBreakpoints(start, end, locations);
}
i::Script::InitLineEnds(script);
CHECK(script->line_ends()->IsFixedArray());
i::Isolate* isolate = script->GetIsolate();
i::Handle<i::FixedArray> line_ends =
i::Handle<i::FixedArray>::cast(i::handle(script->line_ends(), isolate));
CHECK(line_ends->length());
int start_offset = GetSourceOffset(start);
int end_offset = end.IsEmpty()
? GetSmiValue(line_ends, line_ends->length() - 1) + 1
: GetSourceOffset(end);
if (start_offset >= end_offset) return true;
std::vector<i::BreakLocation> v8_locations;
if (!isolate->debug()->GetPossibleBreakpoints(
script, start_offset, end_offset, restrict_to_function,
&v8_locations)) {
return false;
}
std::sort(v8_locations.begin(), v8_locations.end(), CompareBreakLocation);
int current_line_end_index = 0;
for (const auto& v8_location : v8_locations) {
int offset = v8_location.position();
while (offset > GetSmiValue(line_ends, current_line_end_index)) {
++current_line_end_index;
CHECK(current_line_end_index < line_ends->length());
}
int line_offset = 0;
if (current_line_end_index > 0) {
line_offset = GetSmiValue(line_ends, current_line_end_index - 1) + 1;
}
locations->emplace_back(
current_line_end_index + script->line_offset(),
offset - line_offset +
(current_line_end_index == 0 ? script->column_offset() : 0),
v8_location.type());
}
return true;
}
int debug::Script::GetSourceOffset(const debug::Location& location) const {
i::Handle<i::Script> script = Utils::OpenHandle(this);
if (script->type() == i::Script::TYPE_WASM) {
return i::WasmCompiledModule::cast(script->wasm_compiled_module())
->shared()
->GetFunctionOffset(location.GetLineNumber()) +
location.GetColumnNumber();
}
int line = std::max(location.GetLineNumber() - script->line_offset(), 0);
int column = location.GetColumnNumber();
if (line == 0) {
column = std::max(0, column - script->column_offset());
}
i::Script::InitLineEnds(script);
CHECK(script->line_ends()->IsFixedArray());
i::Handle<i::FixedArray> line_ends = i::Handle<i::FixedArray>::cast(
i::handle(script->line_ends(), script->GetIsolate()));
CHECK(line_ends->length());
if (line >= line_ends->length())
return GetSmiValue(line_ends, line_ends->length() - 1);
int line_offset = GetSmiValue(line_ends, line);
if (line == 0) return std::min(column, line_offset);
int prev_line_offset = GetSmiValue(line_ends, line - 1);
return std::min(prev_line_offset + column + 1, line_offset);
}
v8::debug::Location debug::Script::GetSourceLocation(int offset) const {
i::Handle<i::Script> script = Utils::OpenHandle(this);
i::Script::PositionInfo info;
i::Script::GetPositionInfo(script, offset, &info, i::Script::WITH_OFFSET);
return debug::Location(info.line, info.column);
}
bool debug::Script::SetScriptSource(v8::Local<v8::String> newSource,
bool preview, bool* stack_changed) const {
i::Handle<i::Script> script = Utils::OpenHandle(this);
i::Isolate* isolate = script->GetIsolate();
return isolate->debug()->SetScriptSource(
script, Utils::OpenHandle(*newSource), preview, stack_changed);
}
bool debug::Script::SetBreakpoint(v8::Local<v8::String> condition,
debug::Location* location,
debug::BreakpointId* id) const {
i::Handle<i::Script> script = Utils::OpenHandle(this);
i::Isolate* isolate = script->GetIsolate();
int offset = GetSourceOffset(*location);
if (!isolate->debug()->SetBreakpoint(script, Utils::OpenHandle(*condition),
&offset, id)) {
return false;
}
*location = GetSourceLocation(offset);
return true;
}
void debug::RemoveBreakpoint(Isolate* v8_isolate, BreakpointId id) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
i::HandleScope handle_scope(isolate);
isolate->debug()->RemoveBreakpoint(id);
}
debug::WasmScript* debug::WasmScript::Cast(debug::Script* script) {
CHECK(script->IsWasm());
return static_cast<WasmScript*>(script);
}
int debug::WasmScript::NumFunctions() const {
i::DisallowHeapAllocation no_gc;
i::Handle<i::Script> script = Utils::OpenHandle(this);
DCHECK_EQ(i::Script::TYPE_WASM, script->type());
i::WasmCompiledModule* compiled_module =
i::WasmCompiledModule::cast(script->wasm_compiled_module());
i::wasm::WasmModule* module = compiled_module->shared()->module();
DCHECK_GE(i::kMaxInt, module->functions.size());
return static_cast<int>(module->functions.size());
}
int debug::WasmScript::NumImportedFunctions() const {
i::DisallowHeapAllocation no_gc;
i::Handle<i::Script> script = Utils::OpenHandle(this);
DCHECK_EQ(i::Script::TYPE_WASM, script->type());
i::WasmCompiledModule* compiled_module =
i::WasmCompiledModule::cast(script->wasm_compiled_module());
i::wasm::WasmModule* module = compiled_module->shared()->module();
DCHECK_GE(i::kMaxInt, module->num_imported_functions);
return static_cast<int>(module->num_imported_functions);
}
std::pair<int, int> debug::WasmScript::GetFunctionRange(
int function_index) const {
i::DisallowHeapAllocation no_gc;
i::Handle<i::Script> script = Utils::OpenHandle(this);
DCHECK_EQ(i::Script::TYPE_WASM, script->type());
i::WasmCompiledModule* compiled_module =
i::WasmCompiledModule::cast(script->wasm_compiled_module());
i::wasm::WasmModule* module = compiled_module->shared()->module();
DCHECK_LE(0, function_index);
DCHECK_GT(module->functions.size(), function_index);
i::wasm::WasmFunction& func = module->functions[function_index];
DCHECK_GE(i::kMaxInt, func.code.offset());
DCHECK_GE(i::kMaxInt, func.code.end_offset());
return std::make_pair(static_cast<int>(func.code.offset()),
static_cast<int>(func.code.end_offset()));
}
debug::WasmDisassembly debug::WasmScript::DisassembleFunction(
int function_index) const {
i::DisallowHeapAllocation no_gc;
i::Handle<i::Script> script = Utils::OpenHandle(this);
DCHECK_EQ(i::Script::TYPE_WASM, script->type());
i::WasmCompiledModule* compiled_module =
i::WasmCompiledModule::cast(script->wasm_compiled_module());
return compiled_module->shared()->DisassembleFunction(function_index);
}
debug::Location::Location(int line_number, int column_number)
: line_number_(line_number),
column_number_(column_number),
is_empty_(false) {}
debug::Location::Location()
: line_number_(v8::Function::kLineOffsetNotFound),
column_number_(v8::Function::kLineOffsetNotFound),
is_empty_(true) {}
int debug::Location::GetLineNumber() const {
DCHECK(!IsEmpty());
return line_number_;
}
int debug::Location::GetColumnNumber() const {
DCHECK(!IsEmpty());
return column_number_;
}
bool debug::Location::IsEmpty() const { return is_empty_; }
void debug::GetLoadedScripts(v8::Isolate* v8_isolate,
PersistentValueVector<debug::Script>& scripts) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
{
i::DisallowHeapAllocation no_gc;
i::Script::Iterator iterator(isolate);
i::Script* script;
while ((script = iterator.Next()) != nullptr) {
if (!script->IsUserJavaScript()) continue;
if (script->HasValidSource()) {
i::HandleScope handle_scope(isolate);
i::Handle<i::Script> script_handle(script, isolate);
scripts.Append(ToApiHandle<Script>(script_handle));
}
}
}
}
MaybeLocal<UnboundScript> debug::CompileInspectorScript(Isolate* v8_isolate,
Local<String> source) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
PREPARE_FOR_DEBUG_INTERFACE_EXECUTION_WITH_ISOLATE(isolate, UnboundScript);
i::ScriptData* script_data = nullptr;
i::Handle<i::String> str = Utils::OpenHandle(*source);
i::Handle<i::SharedFunctionInfo> result;
{
ScriptOriginOptions origin_options;
i::MaybeHandle<i::SharedFunctionInfo> maybe_function_info =
i::Compiler::GetSharedFunctionInfoForScript(
str, i::MaybeHandle<i::Object>(), 0, 0, origin_options,
i::MaybeHandle<i::Object>(), isolate->native_context(), nullptr,
&script_data, ScriptCompiler::kNoCompileOptions,
ScriptCompiler::kNoCacheBecauseInspector,
i::FLAG_expose_inspector_scripts ? i::NOT_NATIVES_CODE
: i::INSPECTOR_CODE,
i::MaybeHandle<i::FixedArray>());
has_pending_exception = !maybe_function_info.ToHandle(&result);
RETURN_ON_FAILED_EXECUTION(UnboundScript);
}
RETURN_ESCAPED(ToApiHandle<UnboundScript>(result));
}
void debug::SetDebugDelegate(Isolate* v8_isolate,
debug::DebugDelegate* delegate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
// Might create the Debug context.
ENTER_V8_FOR_NEW_CONTEXT(isolate);
isolate->debug()->SetDebugDelegate(delegate, false);
}
void debug::ResetBlackboxedStateCache(Isolate* v8_isolate,
v8::Local<debug::Script> script) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::DisallowHeapAllocation no_gc;
i::SharedFunctionInfo::ScriptIterator iter(Utils::OpenHandle(*script));
while (i::SharedFunctionInfo* info = iter.Next()) {
info->set_computed_debug_is_blackboxed(false);
}
}
int debug::EstimatedValueSize(Isolate* v8_isolate, v8::Local<v8::Value> value) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::Handle<i::Object> object = Utils::OpenHandle(*value);
if (object->IsSmi()) return i::kPointerSize;
CHECK(object->IsHeapObject());
return i::Handle<i::HeapObject>::cast(object)->Size();
}
v8::MaybeLocal<v8::Array> debug::EntriesPreview(Isolate* v8_isolate,
v8::Local<v8::Value> value,
bool* is_key_value) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
if (value->IsMap()) {
*is_key_value = true;
return value.As<Map>()->AsArray();
}
if (value->IsSet()) {
*is_key_value = false;
return value.As<Set>()->AsArray();
}
i::Handle<i::Object> object = Utils::OpenHandle(*value);
if (object->IsJSWeakCollection()) {
*is_key_value = object->IsJSWeakMap();
return Utils::ToLocal(i::JSWeakCollection::GetEntries(
i::Handle<i::JSWeakCollection>::cast(object), 0));
}
if (object->IsJSMapIterator()) {
i::Handle<i::JSMapIterator> iterator =
i::Handle<i::JSMapIterator>::cast(object);
MapAsArrayKind const kind =
static_cast<MapAsArrayKind>(iterator->map()->instance_type());
*is_key_value = kind == MapAsArrayKind::kEntries;
if (!iterator->HasMore()) return v8::Array::New(v8_isolate);
return Utils::ToLocal(MapAsArray(isolate, iterator->table(),
i::Smi::ToInt(iterator->index()), kind));
}
if (object->IsJSSetIterator()) {
i::Handle<i::JSSetIterator> it = i::Handle<i::JSSetIterator>::cast(object);
*is_key_value = false;
if (!it->HasMore()) return v8::Array::New(v8_isolate);
return Utils::ToLocal(
SetAsArray(isolate, it->table(), i::Smi::ToInt(it->index())));
}
return v8::MaybeLocal<v8::Array>();
}
Local<Function> debug::GetBuiltin(Isolate* v8_isolate, Builtin builtin) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
i::HandleScope handle_scope(isolate);
i::Builtins::Name builtin_id;
switch (builtin) {
case kObjectKeys:
builtin_id = i::Builtins::kObjectKeys;
break;
case kObjectGetPrototypeOf:
builtin_id = i::Builtins::kObjectGetPrototypeOf;
break;
case kObjectGetOwnPropertyDescriptor:
builtin_id = i::Builtins::kObjectGetOwnPropertyDescriptor;
break;
case kObjectGetOwnPropertyNames:
builtin_id = i::Builtins::kObjectGetOwnPropertyNames;
break;
case kObjectGetOwnPropertySymbols:
builtin_id = i::Builtins::kObjectGetOwnPropertySymbols;
break;
default:
UNREACHABLE();
}
i::Handle<i::String> name = isolate->factory()->empty_string();
i::Handle<i::Code> code(isolate->builtins()->builtin(builtin_id));
i::NewFunctionArgs args = i::NewFunctionArgs::ForBuiltinWithoutPrototype(
name, code, builtin_id, i::LanguageMode::kSloppy);
i::Handle<i::JSFunction> fun = isolate->factory()->NewFunction(args);
fun->shared()->DontAdaptArguments();
return Utils::ToLocal(handle_scope.CloseAndEscape(fun));
}
void debug::SetConsoleDelegate(Isolate* v8_isolate, ConsoleDelegate* delegate) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
isolate->set_console_delegate(delegate);
}
debug::ConsoleCallArguments::ConsoleCallArguments(
const v8::FunctionCallbackInfo<v8::Value>& info)
: v8::FunctionCallbackInfo<v8::Value>(nullptr, info.values_, info.length_) {
}
debug::ConsoleCallArguments::ConsoleCallArguments(
internal::BuiltinArguments& args)
: v8::FunctionCallbackInfo<v8::Value>(nullptr, &args[0] - 1,
args.length() - 1) {}
int debug::GetStackFrameId(v8::Local<v8::StackFrame> frame) {
return Utils::OpenHandle(*frame)->id();
}
v8::Local<v8::StackTrace> debug::GetDetailedStackTrace(
Isolate* v8_isolate, v8::Local<v8::Object> v8_error) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
i::Handle<i::JSReceiver> error = Utils::OpenHandle(*v8_error);
if (!error->IsJSObject()) {
return v8::Local<v8::StackTrace>();
}
i::Handle<i::FixedArray> stack_trace =
isolate->GetDetailedStackTrace(i::Handle<i::JSObject>::cast(error));
return Utils::StackTraceToLocal(stack_trace);
}
MaybeLocal<debug::Script> debug::GeneratorObject::Script() {
i::Handle<i::JSGeneratorObject> obj = Utils::OpenHandle(this);
i::Object* maybe_script = obj->function()->shared()->script();
if (!maybe_script->IsScript()) return MaybeLocal<debug::Script>();
i::Handle<i::Script> script(i::Script::cast(maybe_script), obj->GetIsolate());
return ToApiHandle<debug::Script>(script);
}
Local<Function> debug::GeneratorObject::Function() {
i::Handle<i::JSGeneratorObject> obj = Utils::OpenHandle(this);
return Utils::ToLocal(handle(obj->function()));
}
debug::Location debug::GeneratorObject::SuspendedLocation() {
i::Handle<i::JSGeneratorObject> obj = Utils::OpenHandle(this);
CHECK(obj->is_suspended());
i::Object* maybe_script = obj->function()->shared()->script();
if (!maybe_script->IsScript()) return debug::Location();
i::Handle<i::Script> script(i::Script::cast(maybe_script), obj->GetIsolate());
i::Script::PositionInfo info;
i::Script::GetPositionInfo(script, obj->source_position(), &info,
i::Script::WITH_OFFSET);
return debug::Location(info.line, info.column);
}
bool debug::GeneratorObject::IsSuspended() {
return Utils::OpenHandle(this)->is_suspended();
}
v8::Local<debug::GeneratorObject> debug::GeneratorObject::Cast(
v8::Local<v8::Value> value) {
CHECK(value->IsGeneratorObject());
return ToApiHandle<debug::GeneratorObject>(Utils::OpenHandle(*value));
}
void debug::QueryObjects(v8::Local<v8::Context> v8_context,
QueryObjectPredicate* predicate,
PersistentValueVector<v8::Object>* objects) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_context->GetIsolate());
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
isolate->heap_profiler()->QueryObjects(Utils::OpenHandle(*v8_context),
predicate, objects);
}
void debug::GlobalLexicalScopeNames(
v8::Local<v8::Context> v8_context,
v8::PersistentValueVector<v8::String>* names) {
i::Handle<i::Context> context = Utils::OpenHandle(*v8_context);
i::Handle<i::ScriptContextTable> table(
context->global_object()->native_context()->script_context_table());
for (int i = 0; i < table->used(); i++) {
i::Handle<i::Context> context = i::ScriptContextTable::GetContext(table, i);
DCHECK(context->IsScriptContext());
i::Handle<i::ScopeInfo> scope_info(context->scope_info());
int local_count = scope_info->ContextLocalCount();
for (int j = 0; j < local_count; ++j) {
i::String* name = scope_info->ContextLocalName(j);
if (i::ScopeInfo::VariableIsSynthetic(name)) continue;
names->Append(Utils::ToLocal(handle(name)));
}
}
}
void debug::SetReturnValue(v8::Isolate* v8_isolate,
v8::Local<v8::Value> value) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
if (!isolate->debug()->break_id()) return;
isolate->debug()->set_return_value(*Utils::OpenHandle(*value));
}
int debug::GetNativeAccessorDescriptor(v8::Local<v8::Context> context,
v8::Local<v8::Object> v8_object,
v8::Local<v8::Name> v8_name) {
i::Handle<i::JSReceiver> object = Utils::OpenHandle(*v8_object);
i::Handle<i::Name> name = Utils::OpenHandle(*v8_name);
uint32_t index;
if (name->AsArrayIndex(&index)) {
return static_cast<int>(debug::NativeAccessorType::None);
}
i::LookupIterator it =
i::LookupIterator(object, name, i::LookupIterator::OWN);
if (!it.IsFound()) return static_cast<int>(debug::NativeAccessorType::None);
if (it.state() != i::LookupIterator::ACCESSOR) {
return static_cast<int>(debug::NativeAccessorType::None);
}
i::Handle<i::Object> structure = it.GetAccessors();
if (!structure->IsAccessorInfo()) {
return static_cast<int>(debug::NativeAccessorType::None);
}
auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
int result = 0;
#define IS_BUILTIN_ACESSOR(name, _) \
if (*structure == *isolate->factory()->name##_accessor()) \
result |= static_cast<int>(debug::NativeAccessorType::IsBuiltin);
ACCESSOR_INFO_LIST(IS_BUILTIN_ACESSOR)
#undef IS_BUILTIN_ACESSOR
i::Handle<i::AccessorInfo> accessor_info =
i::Handle<i::AccessorInfo>::cast(structure);
if (accessor_info->getter())
result |= static_cast<int>(debug::NativeAccessorType::HasGetter);
if (accessor_info->setter())
result |= static_cast<int>(debug::NativeAccessorType::HasSetter);
return result;
}
int64_t debug::GetNextRandomInt64(v8::Isolate* v8_isolate) {
return reinterpret_cast<i::Isolate*>(v8_isolate)
->random_number_generator()
->NextInt64();
}
Local<String> CpuProfileNode::GetFunctionName() const {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
i::Isolate* isolate = node->isolate();
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 debug::Coverage::BlockData::StartOffset() const { return block_->start; }
int debug::Coverage::BlockData::EndOffset() const { return block_->end; }
uint32_t debug::Coverage::BlockData::Count() const { return block_->count; }
int debug::Coverage::FunctionData::StartOffset() const {
return function_->start;
}
int debug::Coverage::FunctionData::EndOffset() const { return function_->end; }
uint32_t debug::Coverage::FunctionData::Count() const {
return function_->count;
}
MaybeLocal<String> debug::Coverage::FunctionData::Name() const {
return ToApiHandle<String>(function_->name);
}
size_t debug::Coverage::FunctionData::BlockCount() const {
return function_->blocks.size();
}
bool debug::Coverage::FunctionData::HasBlockCoverage() const {
return function_->has_block_coverage;
}
debug::Coverage::BlockData debug::Coverage::FunctionData::GetBlockData(
size_t i) const {
return BlockData(&function_->blocks.at(i), coverage_);
}
Local<debug::Script> debug::Coverage::ScriptData::GetScript() const {
return ToApiHandle<debug::Script>(script_->script);
}
size_t debug::Coverage::ScriptData::FunctionCount() const {
return script_->functions.size();
}
debug::Coverage::FunctionData debug::Coverage::ScriptData::GetFunctionData(
size_t i) const {
return FunctionData(&script_->functions.at(i), coverage_);
}
debug::Coverage::ScriptData::ScriptData(size_t index,
std::shared_ptr<i::Coverage> coverage)
: script_(&coverage->at(index)), coverage_(std::move(coverage)) {}
size_t debug::Coverage::ScriptCount() const { return coverage_->size(); }
debug::Coverage::ScriptData debug::Coverage::GetScriptData(size_t i) const {
return ScriptData(i, coverage_);
}
debug::Coverage debug::Coverage::CollectPrecise(Isolate* isolate) {
return Coverage(
i::Coverage::CollectPrecise(reinterpret_cast<i::Isolate*>(isolate)));
}
debug::Coverage debug::Coverage::CollectBestEffort(Isolate* isolate) {
return Coverage(
i::Coverage::CollectBestEffort(reinterpret_cast<i::Isolate*>(isolate)));
}
void debug::Coverage::SelectMode(Isolate* isolate, debug::Coverage::Mode mode) {
i::Coverage::SelectMode(reinterpret_cast<i::Isolate*>(isolate), mode);
}
int debug::TypeProfile::Entry::SourcePosition() const {
return entry_->position;
}
std::vector<MaybeLocal<String>> debug::TypeProfile::Entry::Types() const {
std::vector<MaybeLocal<String>> result;
for (const internal::Handle<internal::String>& type : entry_->types) {
result.emplace_back(ToApiHandle<String>(type));
}
return result;
}
debug::TypeProfile::ScriptData::ScriptData(
size_t index, std::shared_ptr<i::TypeProfile> type_profile)
: script_(&type_profile->at(index)),
type_profile_(std::move(type_profile)) {}
Local<debug::Script> debug::TypeProfile::ScriptData::GetScript() const {
return ToApiHandle<debug::Script>(script_->script);
}
std::vector<debug::TypeProfile::Entry> debug::TypeProfile::ScriptData::Entries()
const {
std::vector<debug::TypeProfile::Entry> result;
for (const internal::TypeProfileEntry& entry : script_->entries) {
result.push_back(debug::TypeProfile::Entry(&entry, type_profile_));
}
return result;
}
debug::TypeProfile debug::TypeProfile::Collect(Isolate* isolate) {
return TypeProfile(
i::TypeProfile::Collect(reinterpret_cast<i::Isolate*>(isolate)));
}
void debug::TypeProfile::SelectMode(Isolate* isolate,
debug::TypeProfile::Mode mode) {
i::TypeProfile::SelectMode(reinterpret_cast<i::Isolate*>(isolate), mode);
}
size_t debug::TypeProfile::ScriptCount() const { return type_profile_->size(); }
debug::TypeProfile::ScriptData debug::TypeProfile::GetScriptData(
size_t i) const {
return ScriptData(i, type_profile_);
}
const char* CpuProfileNode::GetFunctionNameStr() const {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
return node->entry()->name();
}
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 {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
i::Isolate* isolate = node->isolate();
return ToApiHandle<String>(isolate->factory()->InternalizeUtf8String(
node->entry()->resource_name()));
}
const char* CpuProfileNode::GetScriptResourceNameStr() const {
const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
return 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 static_cast<int>(
reinterpret_cast<const i::ProfileNode*>(this)->children()->size());
}
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::CpuProfile* profile = reinterpret_cast<i::CpuProfile*>(this);
i::CpuProfiler* profiler = profile->cpu_profiler();
DCHECK_NOT_NULL(profiler);
profiler->DeleteProfile(profile);
}
Local<String> CpuProfile::GetTitle() const {
const i::CpuProfile* profile = reinterpret_cast<const i::CpuProfile*>(this);
i::Isolate* isolate = profile->top_down()->isolate();
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();
}
CpuProfiler* CpuProfiler::New(Isolate* isolate) {
return reinterpret_cast<CpuProfiler*>(
new i::CpuProfiler(reinterpret_cast<i::Isolate*>(isolate)));
}
void CpuProfiler::Dispose() { delete reinterpret_cast<i::CpuProfiler*>(this); }
// static
void CpuProfiler::CollectSample(Isolate* isolate) {
i::CpuProfiler::CollectSample(reinterpret_cast<i::Isolate*>(isolate));
}
void CpuProfiler::SetSamplingInterval(int us) {
DCHECK_GE(us, 0);
return reinterpret_cast<i::CpuProfiler*>(this)->set_sampling_interval(
base::TimeDelta::FromMicroseconds(us));
}
void CpuProfiler::CollectSample() {
reinterpret_cast<i::CpuProfiler*>(this)->CollectSample();
}
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::CpuProfiler* profiler = reinterpret_cast<i::CpuProfiler*>(this);
i::Isolate* isolate = profiler->isolate();
if (!isolate->is_profiling()) return;
v8::StateTag state = isolate->current_vm_state();
DCHECK(state == v8::EXTERNAL || state == v8::IDLE);
if (isolate->js_entry_sp() != nullptr) 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::HeapGraphEdge* edge = ToInternal(this);
i::Isolate* isolate = edge->isolate();
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 = ToInternal(this)->isolate();
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_count();
}
const HeapGraphEdge* HeapGraphNode::GetChild(int index) const {
return reinterpret_cast<const HeapGraphEdge*>(ToInternal(this)->child(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 = ToInternal(this)->profiler()->isolate();
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 static_cast<int>(ToInternal(this)->entries().size());
}
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);
}
bool HeapProfiler::StartSamplingHeapProfiler(uint64_t sample_interval,
int stack_depth,
SamplingFlags flags) {
return reinterpret_cast<i::HeapProfiler*>(this)->StartSamplingHeapProfiler(
sample_interval, stack_depth, flags);
}
void HeapProfiler::StopSamplingHeapProfiler() {
reinterpret_cast<i::HeapProfiler*>(this)->StopSamplingHeapProfiler();
}
AllocationProfile* HeapProfiler::GetAllocationProfile() {
return reinterpret_cast<i::HeapProfiler*>(this)->GetAllocationProfile();
}
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);
}
void HeapProfiler::SetGetRetainerInfosCallback(
GetRetainerInfosCallback callback) {
reinterpret_cast<i::HeapProfiler*>(this)->SetGetRetainerInfosCallback(
callback);
}
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-bytecode-size=999999 "
"--max-inlined-bytecode-size-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
}
void Testing::DeoptimizeAll(Isolate* isolate) {
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
i::HandleScope scope(i_isolate);
internal::Deoptimizer::DeoptimizeAll(i_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(RootVisitor* v) {
#ifdef DEBUG
bool found_block_before_deferred = false;
#endif
// Iterate over all handles in the blocks except for the last.
for (int i = static_cast<int>(blocks()->size()) - 2; i >= 0; --i) {
Object** block = blocks()->at(i);
if (last_handle_before_deferred_block_ != nullptr &&
(last_handle_before_deferred_block_ <= &block[kHandleBlockSize]) &&
(last_handle_before_deferred_block_ >= block)) {
v->VisitRootPointers(Root::kHandleScope, block,
last_handle_before_deferred_block_);
DCHECK(!found_block_before_deferred);
#ifdef DEBUG
found_block_before_deferred = true;
#endif
} else {
v->VisitRootPointers(Root::kHandleScope, block, &block[kHandleBlockSize]);
}
}
DCHECK(last_handle_before_deferred_block_ == nullptr ||
found_block_before_deferred);
// Iterate over live handles in the last block (if any).
if (!blocks()->empty()) {
v->VisitRootPointers(Root::kHandleScope, blocks()->back(),
handle_scope_data_.next);
}
DetachableVector<Context*>* context_lists[2] = {&saved_contexts_,
&entered_contexts_};
for (unsigned i = 0; i < arraysize(context_lists); i++) {
if (context_lists[i]->empty()) continue;
Object** start = reinterpret_cast<Object**>(&context_lists[i]->front());
v->VisitRootPointers(Root::kHandleScope, start,
start + context_lists[i]->size());
}
if (microtask_context_) {
v->VisitRootPointer(Root::kHandleScope,
reinterpret_cast<Object**>(&microtask_context_));
}
}
void HandleScopeImplementer::Iterate(RootVisitor* v) {
HandleScopeData* current = isolate_->handle_scope_data();
handle_scope_data_ = *current;
IterateThis(v);
}
char* HandleScopeImplementer::Iterate(RootVisitor* 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_.empty()) {
Object** block_start = blocks_.back();
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_.push_back(blocks_.back());
blocks_.pop_back();
}
// deferred->blocks_ now contains the blocks installed on the
// HandleScope stack since BeginDeferredScope was called, but in
// reverse order.
DCHECK(prev_limit == nullptr || !blocks_.empty());
DCHECK(!blocks_.empty() && prev_limit != nullptr);
DCHECK_NOT_NULL(last_handle_before_deferred_block_);
last_handle_before_deferred_block_ = nullptr;
return deferred;
}
void HandleScopeImplementer::BeginDeferredScope() {
DCHECK_NULL(last_handle_before_deferred_block_);
last_handle_before_deferred_block_ = isolate()->handle_scope_data()->next;
}
DeferredHandles::~DeferredHandles() {
isolate_->UnlinkDeferredHandles(this);
for (size_t i = 0; i < blocks_.size(); i++) {
#ifdef ENABLE_HANDLE_ZAPPING
HandleScope::ZapRange(blocks_[i], &blocks_[i][kHandleBlockSize]);
#endif
isolate_->handle_scope_implementer()->ReturnBlock(blocks_[i]);
}
}
void DeferredHandles::Iterate(RootVisitor* v) {
DCHECK(!blocks_.empty());
DCHECK((first_block_limit_ >= blocks_.front()) &&
(first_block_limit_ <= &(blocks_.front())[kHandleBlockSize]));
v->VisitRootPointers(Root::kHandleScope, blocks_.front(), first_block_limit_);
for (size_t i = 1; i < blocks_.size(); i++) {
v->VisitRootPointers(Root::kHandleScope, 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());
RuntimeCallTimerScope timer(isolate,
RuntimeCallCounterId::kAccessorGetterCallback);
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());
RuntimeCallTimerScope timer(isolate,
RuntimeCallCounterId::kInvokeFunctionCallback);
Address callback_address =
reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
VMState<EXTERNAL> state(isolate);
ExternalCallbackScope call_scope(isolate, callback_address);
callback(info);
}
// Undefine macros for jumbo build.
#undef LOG_API
#undef ENTER_V8_DO_NOT_USE
#undef ENTER_V8_HELPER_DO_NOT_USE
#undef PREPARE_FOR_DEBUG_INTERFACE_EXECUTION_WITH_ISOLATE
#undef PREPARE_FOR_EXECUTION_WITH_CONTEXT
#undef PREPARE_FOR_EXECUTION
#undef ENTER_V8
#undef ENTER_V8_NO_SCRIPT
#undef ENTER_V8_NO_SCRIPT_NO_EXCEPTION
#undef ENTER_V8_FOR_NEW_CONTEXT
#undef EXCEPTION_BAILOUT_CHECK_SCOPED_DO_NOT_USE
#undef RETURN_ON_FAILED_EXECUTION
#undef RETURN_ON_FAILED_EXECUTION_PRIMITIVE
#undef RETURN_TO_LOCAL_UNCHECKED
#undef RETURN_ESCAPED
#undef SET_FIELD_WRAPPED
#undef NEW_STRING
#undef CALLBACK_SETTER
} // namespace internal
} // namespace v8