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V8ContextImpl.cpp
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5166 lines (4181 loc) · 189 KB
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
#include "ClearScriptV8Native.h"
//-----------------------------------------------------------------------------
// support for v8::Maybe and v8::MaybeLocal
//-----------------------------------------------------------------------------
class FromMaybeScope final
{
};
//-----------------------------------------------------------------------------
class FromMaybeFailure final
{
};
//-----------------------------------------------------------------------------
template <typename T>
inline T FromMaybe(FromMaybeScope& /*scope*/, const v8::Maybe<T>& maybe)
{
T result;
if (maybe.To(&result))
{
return result;
}
throw FromMaybeFailure();
}
//-----------------------------------------------------------------------------
template <typename T>
inline v8::Local<T> FromMaybe(FromMaybeScope& /*scope*/, const v8::MaybeLocal<T>& maybe)
{
v8::Local<T> result;
if (maybe.ToLocal(&result))
{
return result;
}
throw FromMaybeFailure();
}
//-----------------------------------------------------------------------------
template <typename T>
inline T FromMaybeDefault(const v8::Maybe<T>& maybe, const T& defaultValue = T())
{
return maybe.FromMaybe(defaultValue);
}
//-----------------------------------------------------------------------------
template <typename T>
inline v8::Local<T> FromMaybeDefault(const v8::MaybeLocal<T>& maybe, const v8::Local<T>& defaultValue = v8::Local<T>())
{
return maybe.FromMaybe(defaultValue);
}
//-----------------------------------------------------------------------------
#define FROM_MAYBE_TRY \
{ \
DISABLE_WARNING(4456) /* declaration hides previous local declaration */ \
FromMaybeScope t_FromMaybeScope; \
DEFAULT_WARNING(4456) \
try \
{
#define FROM_MAYBE_CATCH \
IGNORE_UNUSED(t_FromMaybeScope); \
} \
catch (const FromMaybeFailure&) \
{ \
#define FROM_MAYBE_END \
IGNORE_UNUSED(t_FromMaybeScope); \
} \
}
#define FROM_MAYBE_CATCH_CONSUME \
FROM_MAYBE_CATCH \
FROM_MAYBE_END
#define FROM_MAYBE(...) \
(::FromMaybe(t_FromMaybeScope, __VA_ARGS__))
#define FROM_MAYBE_DEFAULT(...) \
(::FromMaybeDefault(__VA_ARGS__))
//-----------------------------------------------------------------------------
// local helper functions
//-----------------------------------------------------------------------------
inline v8::Local<v8::String> ValueAsString(const v8::Local<v8::Value>& hValue)
{
if (hValue.IsEmpty())
{
return v8::Local<v8::String>();
}
if (hValue->IsString())
{
return hValue.As<v8::String>();
}
if (hValue->IsStringObject())
{
return hValue.As<v8::StringObject>()->ValueOf();
}
return v8::Local<v8::String>();
}
//-----------------------------------------------------------------------------
inline v8::Local<v8::Object> ValueAsObject(const v8::Local<v8::Value>& hValue)
{
return (!hValue.IsEmpty() && hValue->IsObject()) ? hValue.As<v8::Object>() : v8::Local<v8::Object>();
}
//-----------------------------------------------------------------------------
inline v8::Local<v8::External> ValueAsExternal(const v8::Local<v8::Value>& hValue)
{
return (!hValue.IsEmpty() && hValue->IsExternal()) ? hValue.As<v8::External>() : v8::Local<v8::External>();
}
//-----------------------------------------------------------------------------
inline v8::Local<v8::Function> ValueAsFunction(const v8::Local<v8::Value>& hValue)
{
return (!hValue.IsEmpty() && hValue->IsFunction()) ? hValue.As<v8::Function>() : v8::Local<v8::Function>();
}
//-----------------------------------------------------------------------------
inline v8::Local<v8::BigInt> ValueAsBigInt(const v8::Local<v8::Value>& hValue)
{
if (hValue.IsEmpty())
{
return v8::Local<v8::BigInt>();
}
if (hValue->IsBigInt())
{
return hValue.As<v8::BigInt>();
}
if (hValue->IsBigIntObject())
{
return hValue.As<v8::BigIntObject>()->ValueOf();
}
return v8::Local<v8::BigInt>();
}
//-----------------------------------------------------------------------------
inline bool TryGetValueAsBoolean(const SharedPtr<V8IsolateImpl>& spIsolateImpl, const v8::Local<v8::Value>& hValue, bool& value)
{
if (hValue.IsEmpty())
{
return false;
}
if (hValue->IsBoolean())
{
value = spIsolateImpl->BooleanValue(hValue);
return true;
}
if (hValue->IsBooleanObject())
{
value = hValue.As<v8::BooleanObject>()->ValueOf();
return true;
}
return false;
}
//-----------------------------------------------------------------------------
inline bool TryGetValueAsNumber(v8::Local<v8::Context> hContext, const v8::Local<v8::Value>& hValue, double& value)
{
if (hValue.IsEmpty())
{
return false;
}
FROM_MAYBE_TRY
if (hValue->IsNumber())
{
value = FROM_MAYBE(hValue->NumberValue(hContext));
return true;
}
if (hValue->IsNumberObject())
{
value = hValue.As<v8::NumberObject>()->ValueOf();
return true;
}
FROM_MAYBE_CATCH_CONSUME
return false;
}
//-----------------------------------------------------------------------------
template <typename TInfo>
inline V8ContextImpl* GetContextImplFromHolder(const TInfo& info)
{
auto hHolder = info.HolderV2();
if (!hHolder.IsEmpty() && hHolder->InternalFieldCount() > 0)
{
auto hField = hHolder->GetInternalField(0);
if (!hField.IsEmpty() && hField->IsValue() && !hField.template As<v8::Value>()->IsUndefined())
{
return static_cast<V8ContextImpl*>(hHolder->GetAlignedPointerFromInternalField(0, v8::kEmbedderDataTypeTagDefault));
}
}
return nullptr;
}
//-----------------------------------------------------------------------------
template <typename TInfo>
inline V8ContextImpl* GetContextImplFromData(const TInfo& info)
{
auto hContextImpl = ::ValueAsExternal(info.Data());
return !hContextImpl.IsEmpty() ? static_cast<V8ContextImpl*>(hContextImpl->Value(v8::kExternalPointerTypeTagDefault)) : nullptr;
}
//-----------------------------------------------------------------------------
template <typename TVariable, typename TValue>
inline void SetIfSameType(TVariable& /*variable*/, TValue /*value*/)
{
}
//-----------------------------------------------------------------------------
template <typename TVariable>
inline void SetIfSameType(TVariable& variable, TVariable value)
{
variable = value;
}
//-----------------------------------------------------------------------------
template <typename T>
inline v8::Intercepted GetCallbackStatus(const T& /*value*/)
{
return v8::Intercepted::kYes;
}
//-----------------------------------------------------------------------------
template <typename T>
inline v8::Intercepted GetCallbackStatus(const v8::Local<T>& hValue)
{
return hValue.IsEmpty() ? v8::Intercepted::kNo : v8::Intercepted::kYes;
}
//-----------------------------------------------------------------------------
template <typename TInfo, typename TResult, typename TStatus>
inline void ProcessCallbackResult(const TResult& result, const TInfo& info, TStatus& status)
{
::SetIfSameType(status, ::GetCallbackStatus(result));
info.GetReturnValue().Set(result);
}
//-----------------------------------------------------------------------------
template <typename TInfo, typename TStatus>
inline void ProcessVoidCallbackResult(const TInfo& info, TStatus& status)
{
IGNORE_UNUSED(info);
::SetIfSameType(status, v8::Intercepted::kYes);
}
//-----------------------------------------------------------------------------
// V8ContextImpl implementation
//-----------------------------------------------------------------------------
#define BEGIN_ISOLATE_SCOPE \
{ \
DISABLE_WARNING(4456) /* declaration hides previous local declaration */ \
V8IsolateImpl::Scope t_IsolateScope(*m_spIsolateImpl); \
DEFAULT_WARNING(4456)
#define END_ISOLATE_SCOPE \
IGNORE_UNUSED(t_IsolateScope); \
}
#define BEGIN_CONTEXT_SCOPE \
{ \
DISABLE_WARNING(4456) /* declaration hides previous local declaration */ \
Scope t_ContextScope(this); \
DEFAULT_WARNING(4456)
#define END_CONTEXT_SCOPE \
IGNORE_UNUSED(t_ContextScope); \
}
#define BEGIN_EXECUTION_SCOPE \
{ \
DISABLE_WARNING(4456) /* declaration hides previous local declaration */ \
V8IsolateImpl::ExecutionScope t_ExecutionScope(*m_spIsolateImpl); \
V8IsolateImpl::TryCatch t_TryCatch(*m_spIsolateImpl); \
DEFAULT_WARNING(4456)
#define END_EXECUTION_SCOPE \
IGNORE_UNUSED(t_TryCatch); \
IGNORE_UNUSED(t_ExecutionScope); \
}
#define EXECUTION_STARTED \
(t_ExecutionScope.ExecutionStarted())
#define BEGIN_DOCUMENT_SCOPE(DOCUMENT_INFO) \
{ \
DISABLE_WARNING(4456) /* declaration hides previous local declaration */ \
V8IsolateImpl::DocumentScope t_DocumentScope(*m_spIsolateImpl, DOCUMENT_INFO); \
DEFAULT_WARNING(4456)
#define END_DOCUMENT_SCOPE \
IGNORE_UNUSED(t_DocumentScope); \
}
#define VERIFY(RESULT) \
(Verify(t_ExecutionScope, t_TryCatch, RESULT))
#define VERIFY_MAYBE(RESULT) \
VERIFY(FROM_MAYBE_DEFAULT(RESULT))
#define VERIFY_CHECKPOINT() \
(Verify(t_ExecutionScope, t_TryCatch))
#define CALLBACK_RETURN(RESULT) \
BEGIN_COMPOUND_MACRO \
::ProcessCallbackResult(RESULT, info, t_CallbackStatus); \
return; \
END_COMPOUND_MACRO
#define CALLBACK_RETURN_VOID() \
BEGIN_COMPOUND_MACRO \
::ProcessVoidCallbackResult(info, t_CallbackStatus); \
return; \
END_COMPOUND_MACRO
#define CALLBACK_ENTER \
auto t_CallbackStatus = v8::Intercepted::kNo; \
([&] () noexcept -> void \
{ \
#define CALLBACK_EXIT \
} \
)(); \
return t_CallbackStatus;
constexpr enum class DummyCallbackStatus {} t_CallbackStatus {};
//-----------------------------------------------------------------------------
static std::atomic<size_t> s_InstanceCount(0);
//-----------------------------------------------------------------------------
V8ContextImpl::V8ContextImpl(V8IsolateImpl* pIsolateImpl, const StdString& name):
V8ContextImpl(SharedPtr<V8IsolateImpl>(pIsolateImpl), name, Options())
{
}
//-----------------------------------------------------------------------------
V8ContextImpl::V8ContextImpl(SharedPtr<V8IsolateImpl>&& spIsolateImpl, const StdString& name, const Options& options):
m_Name(name),
m_spIsolateImpl(std::move(spIsolateImpl)),
m_DateTimeConversionEnabled(::HasFlag(options.Flags, Flags::EnableDateTimeConversion)),
m_HideHostExceptions(::HasFlag(options.Flags, Flags::HideHostExceptions)),
m_AllowHostObjectConstructorCall(false),
m_ChangedTimerResolution(false),
m_pvV8ObjectCache(nullptr)
{
VerifyNotOutOfMemory();
if (::HasAllFlags(options.Flags, Flags::AddPerformanceObject, Flags::SetTimerResolution))
{
m_ChangedTimerResolution = HighResolutionClock::SetTimerResolution();
}
auto timeOrigin = HighResolutionClock::GetMillisecondsSinceUnixEpoch();
m_RelativeTimeOrigin = HighResolutionClock::GetRelativeMilliseconds();
BEGIN_ISOLATE_SCOPE
FROM_MAYBE_TRY
if (::HasFlag(options.Flags, Flags::DisableGlobalMembers))
{
m_hContext = CreatePersistent(CreateContext());
}
else
{
auto hGlobalTemplate = CreateObjectTemplate();
hGlobalTemplate->SetInternalFieldCount(1);
hGlobalTemplate->SetHandler(v8::NamedPropertyHandlerConfiguration(GetGlobalProperty, SetGlobalProperty, QueryGlobalProperty, DeleteGlobalProperty, GetGlobalPropertyNames, v8::Local<v8::Value>(), v8::PropertyHandlerFlags::kNonMasking));
hGlobalTemplate->SetHandler(v8::IndexedPropertyHandlerConfiguration(GetGlobalProperty, SetGlobalProperty, QueryGlobalProperty, DeleteGlobalProperty, GetGlobalPropertyIndices));
m_hContext = CreatePersistent(CreateContext(nullptr, hGlobalTemplate));
if (!m_hContext.IsEmpty())
{
auto hGlobal = m_hContext->Global();
if (!hGlobal.IsEmpty() && (hGlobal->InternalFieldCount() > 0))
{
hGlobal->SetAlignedPointerInInternalField(0, this, 0);
}
}
}
if (m_hContext.IsEmpty())
{
throw FromMaybeFailure();
}
auto hContextImpl = CreateExternal(this);
auto globalFlags = V8IsolateImpl::GetGlobalFlags();
v8::Local<v8::FunctionTemplate> hGetHostObjectIteratorFunction;
v8::Local<v8::FunctionTemplate> hGetHostObjectAsyncIteratorFunction;
v8::Local<v8::FunctionTemplate> hDisposeHostObjectFunction;
v8::Local<v8::FunctionTemplate> hAsyncDisposeHostObjectFunction;
v8::Local<v8::FunctionTemplate> hGetFastHostObjectIteratorFunction;
v8::Local<v8::FunctionTemplate> hGetFastHostObjectAsyncIteratorFunction;
v8::Local<v8::FunctionTemplate> hDisposeFastHostObjectFunction;
v8::Local<v8::FunctionTemplate> hAsyncDisposeFastHostObjectFunction;
v8::Local<v8::FunctionTemplate> hGetHostObjectJsonFunction;
v8::Local<v8::FunctionTemplate> hHostDelegateToFunctionFunction;
BEGIN_CONTEXT_SCOPE
m_hContext->SetAlignedPointerInEmbedderData(1, this, 1);
m_hIsHostObjectKey = CreatePersistent(CreateSymbol());
ASSERT_EVAL(FROM_MAYBE(m_hContext->Global()->Set(m_hContext, CreateString("isHostObjectKey"), m_hIsHostObjectKey)));
m_hModuleResultKey = CreatePersistent(CreateSymbol());
ASSERT_EVAL(FROM_MAYBE(m_hContext->Global()->Set(m_hContext, CreateString("moduleResultKey"), m_hModuleResultKey)));
ASSERT_EVAL(FROM_MAYBE(m_hContext->Global()->Set(m_hContext, CreateString("getPromiseState"), FROM_MAYBE(v8::Function::New(m_hContext, GetPromiseStateCallback, hContextImpl)))));
ASSERT_EVAL(FROM_MAYBE(m_hContext->Global()->Set(m_hContext, CreateString("getPromiseResult"), FROM_MAYBE(v8::Function::New(m_hContext, GetPromiseResultCallback, hContextImpl)))));
m_hMissingPropertyValue = CreatePersistent(CreateSymbol());
m_hHostExceptionKey = CreatePersistent(CreateString("hostException"));
m_hCacheKey = CreatePersistent(CreatePrivate());
m_hAccessTokenKey = CreatePersistent(CreatePrivate());
m_hInternalUseOnly = CreatePersistent(CreateString("The invoked function is for ClearScript internal use only"));
m_hStackKey = CreatePersistent(CreateString("stack"));
m_hObjectNotInvocable = CreatePersistent(CreateString("The object does not support invocation"));
m_hMethodOrPropertyNotFound = CreatePersistent(CreateString("Method or property not found"));
m_hPropertyValueNotInvocable = CreatePersistent(CreateString("The property value does not support invocation"));
m_hInvalidModuleRequest = CreatePersistent(CreateString("Invalid module load request"));
m_hConstructorKey = CreatePersistent(CreateString("constructor"));
m_hSetModuleResultKey = CreatePersistent(CreateString("setResult"));
hGetHostObjectIteratorFunction = CreateFunctionTemplate(GetHostObjectIterator, hContextImpl);
hGetHostObjectAsyncIteratorFunction = CreateFunctionTemplate(GetHostObjectAsyncIterator, hContextImpl);
if (!::HasFlag(globalFlags, V8GlobalFlags::DisableExplicitResourceManagement))
{
hDisposeHostObjectFunction = CreateFunctionTemplate(DisposeHostObject, hContextImpl);
hAsyncDisposeHostObjectFunction = CreateFunctionTemplate(AsyncDisposeHostObject, hContextImpl);
}
hGetFastHostObjectIteratorFunction = CreateFunctionTemplate(GetFastHostObjectIterator, hContextImpl);
hGetFastHostObjectAsyncIteratorFunction = CreateFunctionTemplate(GetFastHostObjectAsyncIterator, hContextImpl);
if (!::HasFlag(globalFlags, V8GlobalFlags::DisableExplicitResourceManagement))
{
hDisposeFastHostObjectFunction = CreateFunctionTemplate(DisposeFastHostObject, hContextImpl);
hAsyncDisposeFastHostObjectFunction = CreateFunctionTemplate(AsyncDisposeFastHostObject, hContextImpl);
}
hGetHostObjectJsonFunction = CreateFunctionTemplate(GetHostObjectJson, hContextImpl);
hHostDelegateToFunctionFunction = CreateFunctionTemplate(CreateFunctionForHostDelegate, hContextImpl);
m_hAccessToken = CreatePersistent(CreateObject());
m_hFlushFunction = CreatePersistent(FROM_MAYBE(v8::Function::New(m_hContext, FlushCallback)));
m_hTerminationException = CreatePersistent(v8::Exception::Error(CreateString("Script execution was interrupted")));
if (::HasFlag(options.Flags, Flags::AddPerformanceObject))
{
auto hPerformance = CreateObject();
ASSERT_EVAL(FROM_MAYBE(hPerformance->DefineOwnProperty(m_hContext, CreateString("timeOrigin"), CreateNumber(timeOrigin), ::CombineFlags(v8::ReadOnly, v8::DontDelete))));
ASSERT_EVAL(FROM_MAYBE(hPerformance->DefineOwnProperty(m_hContext, CreateString("now"), FROM_MAYBE(v8::Function::New(m_hContext, PerformanceNowCallback, hContextImpl)), ::CombineFlags(v8::ReadOnly, v8::DontDelete))));
ASSERT_EVAL(FROM_MAYBE(hPerformance->DefineOwnProperty(m_hContext, CreateString("sleep"), FROM_MAYBE(v8::Function::New(m_hContext, PerformanceSleepCallback, hContextImpl)), ::CombineFlags(v8::ReadOnly, v8::DontDelete))));
ASSERT_EVAL(FROM_MAYBE(m_hContext->Global()->DefineOwnProperty(m_hContext, CreateString("Performance"), hPerformance, v8::DontEnum)));
}
END_CONTEXT_SCOPE
auto hToJSON = CreateString("toJSON");
m_hHostObjectTemplate = CreatePersistent(CreateFunctionTemplate());
m_hHostObjectTemplate->SetClassName(CreateString("HostObject"));
m_hHostObjectTemplate->SetCallHandler(HostObjectConstructorCallHandler, hContextImpl);
m_hHostObjectTemplate->InstanceTemplate()->SetHandler(v8::NamedPropertyHandlerConfiguration(GetHostObjectProperty, SetHostObjectProperty, QueryHostObjectProperty, DeleteHostObjectProperty, GetHostObjectPropertyNames, hContextImpl, v8::PropertyHandlerFlags::kNone));
m_hHostObjectTemplate->InstanceTemplate()->SetHandler(v8::IndexedPropertyHandlerConfiguration(GetHostObjectProperty, SetHostObjectProperty, QueryHostObjectProperty, DeleteHostObjectProperty, GetHostObjectPropertyIndices, hContextImpl));
m_hHostObjectTemplate->PrototypeTemplate()->Set(GetIteratorSymbol(), hGetHostObjectIteratorFunction);
m_hHostObjectTemplate->PrototypeTemplate()->Set(GetAsyncIteratorSymbol(), hGetHostObjectAsyncIteratorFunction);
m_hHostObjectTemplate->PrototypeTemplate()->Set(hToJSON, hGetHostObjectJsonFunction, ::CombineFlags(v8::ReadOnly, v8::DontDelete, v8::DontEnum));
if (!::HasFlag(globalFlags, V8GlobalFlags::DisableExplicitResourceManagement))
{
m_hHostObjectTemplate->PrototypeTemplate()->Set(GetDisposeSymbol(), hDisposeHostObjectFunction);
m_hHostObjectTemplate->PrototypeTemplate()->Set(GetAsyncDisposeSymbol(), hAsyncDisposeHostObjectFunction);
}
m_hHostInvocableTemplate = CreatePersistent(CreateFunctionTemplate());
m_hHostInvocableTemplate->SetClassName(CreateString("HostInvocable"));
m_hHostInvocableTemplate->SetCallHandler(HostObjectConstructorCallHandler, hContextImpl);
m_hHostInvocableTemplate->InstanceTemplate()->SetHandler(v8::NamedPropertyHandlerConfiguration(GetHostObjectProperty, SetHostObjectProperty, QueryHostObjectProperty, DeleteHostObjectProperty, GetHostObjectPropertyNames, hContextImpl, v8::PropertyHandlerFlags::kNone));
m_hHostInvocableTemplate->InstanceTemplate()->SetHandler(v8::IndexedPropertyHandlerConfiguration(GetHostObjectProperty, SetHostObjectProperty, QueryHostObjectProperty, DeleteHostObjectProperty, GetHostObjectPropertyIndices, hContextImpl));
m_hHostInvocableTemplate->PrototypeTemplate()->Set(GetIteratorSymbol(), hGetHostObjectIteratorFunction);
m_hHostInvocableTemplate->PrototypeTemplate()->Set(GetAsyncIteratorSymbol(), hGetHostObjectAsyncIteratorFunction);
m_hHostInvocableTemplate->PrototypeTemplate()->Set(hToJSON, hGetHostObjectJsonFunction, ::CombineFlags(v8::ReadOnly, v8::DontDelete, v8::DontEnum));
m_hHostInvocableTemplate->InstanceTemplate()->SetCallAsFunctionHandler(InvokeHostObject, hContextImpl);
if (!::HasFlag(globalFlags, V8GlobalFlags::DisableExplicitResourceManagement))
{
m_hHostInvocableTemplate->PrototypeTemplate()->Set(GetDisposeSymbol(), hDisposeHostObjectFunction);
m_hHostInvocableTemplate->PrototypeTemplate()->Set(GetAsyncDisposeSymbol(), hAsyncDisposeHostObjectFunction);
}
m_hHostDelegateTemplate = CreatePersistent(CreateFunctionTemplate());
m_hHostDelegateTemplate->SetClassName(CreateString("HostDelegate"));
m_hHostDelegateTemplate->SetCallHandler(HostObjectConstructorCallHandler, hContextImpl);
m_hHostDelegateTemplate->InstanceTemplate()->SetHandler(v8::NamedPropertyHandlerConfiguration(GetHostObjectProperty, SetHostObjectProperty, QueryHostObjectProperty, DeleteHostObjectProperty, GetHostObjectPropertyNames, hContextImpl, v8::PropertyHandlerFlags::kNone));
m_hHostDelegateTemplate->InstanceTemplate()->SetHandler(v8::IndexedPropertyHandlerConfiguration(GetHostObjectProperty, SetHostObjectProperty, QueryHostObjectProperty, DeleteHostObjectProperty, GetHostObjectPropertyIndices, hContextImpl));
m_hHostDelegateTemplate->PrototypeTemplate()->Set(GetIteratorSymbol(), hGetHostObjectIteratorFunction);
m_hHostDelegateTemplate->PrototypeTemplate()->Set(GetAsyncIteratorSymbol(), hGetHostObjectAsyncIteratorFunction);
m_hHostDelegateTemplate->PrototypeTemplate()->Set(hToJSON, hGetHostObjectJsonFunction, ::CombineFlags(v8::ReadOnly, v8::DontDelete, v8::DontEnum));
m_hHostDelegateTemplate->InstanceTemplate()->SetCallAsFunctionHandler(InvokeHostObject, hContextImpl);
m_hHostDelegateTemplate->InstanceTemplate()->SetHostDelegate(); // instructs our patched V8 typeof implementation to return "function"
m_hHostDelegateTemplate->PrototypeTemplate()->Set(CreateString("toFunction"), hHostDelegateToFunctionFunction);
if (!::HasFlag(globalFlags, V8GlobalFlags::DisableExplicitResourceManagement))
{
m_hHostDelegateTemplate->PrototypeTemplate()->Set(GetDisposeSymbol(), hDisposeHostObjectFunction);
m_hHostDelegateTemplate->PrototypeTemplate()->Set(GetAsyncDisposeSymbol(), hAsyncDisposeHostObjectFunction);
}
m_hFastHostObjectTemplate = CreatePersistent(CreateFunctionTemplate());
m_hFastHostObjectTemplate->SetClassName(CreateString("FastHostObject"));
m_hFastHostObjectTemplate->SetCallHandler(HostObjectConstructorCallHandler, hContextImpl);
m_hFastHostObjectTemplate->InstanceTemplate()->SetHandler(v8::NamedPropertyHandlerConfiguration(GetFastHostObjectProperty, SetFastHostObjectProperty, QueryFastHostObjectProperty, DeleteFastHostObjectProperty, GetFastHostObjectPropertyNames, hContextImpl, v8::PropertyHandlerFlags::kNone));
m_hFastHostObjectTemplate->InstanceTemplate()->SetHandler(v8::IndexedPropertyHandlerConfiguration(GetFastHostObjectProperty, SetFastHostObjectProperty, QueryFastHostObjectProperty, DeleteFastHostObjectProperty, GetFastHostObjectPropertyIndices, hContextImpl));
m_hFastHostObjectTemplate->PrototypeTemplate()->Set(GetIteratorSymbol(), hGetFastHostObjectIteratorFunction);
m_hFastHostObjectTemplate->PrototypeTemplate()->Set(GetAsyncIteratorSymbol(), hGetFastHostObjectAsyncIteratorFunction);
if (!::HasFlag(globalFlags, V8GlobalFlags::DisableExplicitResourceManagement))
{
m_hFastHostObjectTemplate->PrototypeTemplate()->Set(GetDisposeSymbol(), hDisposeFastHostObjectFunction);
m_hFastHostObjectTemplate->PrototypeTemplate()->Set(GetAsyncDisposeSymbol(), hAsyncDisposeFastHostObjectFunction);
}
m_hFastHostFunctionTemplate = CreatePersistent(CreateFunctionTemplate());
m_hFastHostFunctionTemplate->SetClassName(CreateString("FastHostFunction"));
m_hFastHostFunctionTemplate->SetCallHandler(HostObjectConstructorCallHandler, hContextImpl);
m_hFastHostFunctionTemplate->InstanceTemplate()->SetHandler(v8::NamedPropertyHandlerConfiguration(GetFastHostObjectProperty, SetFastHostObjectProperty, QueryFastHostObjectProperty, DeleteFastHostObjectProperty, GetFastHostObjectPropertyNames, hContextImpl, v8::PropertyHandlerFlags::kNone));
m_hFastHostFunctionTemplate->InstanceTemplate()->SetHandler(v8::IndexedPropertyHandlerConfiguration(GetFastHostObjectProperty, SetFastHostObjectProperty, QueryFastHostObjectProperty, DeleteFastHostObjectProperty, GetFastHostObjectPropertyIndices, hContextImpl));
m_hFastHostFunctionTemplate->PrototypeTemplate()->Set(GetIteratorSymbol(), hGetFastHostObjectIteratorFunction);
m_hFastHostFunctionTemplate->PrototypeTemplate()->Set(GetAsyncIteratorSymbol(), hGetFastHostObjectAsyncIteratorFunction);
m_hFastHostFunctionTemplate->InstanceTemplate()->SetCallAsFunctionHandler(InvokeFastHostObject, hContextImpl);
m_hFastHostFunctionTemplate->InstanceTemplate()->SetHostDelegate(); // instructs our patched V8 typeof implementation to return "function"
m_hFastHostFunctionTemplate->PrototypeTemplate()->Set(CreateString("toFunction"), hHostDelegateToFunctionFunction);
if (!::HasFlag(globalFlags, V8GlobalFlags::DisableExplicitResourceManagement))
{
m_hFastHostFunctionTemplate->PrototypeTemplate()->Set(GetDisposeSymbol(), hDisposeFastHostObjectFunction);
m_hFastHostFunctionTemplate->PrototypeTemplate()->Set(GetAsyncDisposeSymbol(), hAsyncDisposeFastHostObjectFunction);
}
m_pvV8ObjectCache = HostObjectUtil::CreateV8ObjectCache();
m_spIsolateImpl->AddContext(this, options);
FROM_MAYBE_CATCH
Teardown();
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("The V8 runtime cannot initialize the script engine because a script exception is pending")), false);
FROM_MAYBE_END
END_ISOLATE_SCOPE
++s_InstanceCount;
}
//-----------------------------------------------------------------------------
size_t V8ContextImpl::GetInstanceCount()
{
return s_InstanceCount;
}
//-----------------------------------------------------------------------------
size_t V8ContextImpl::GetMaxIsolateHeapSize()
{
return m_spIsolateImpl->GetMaxHeapSize();
}
//-----------------------------------------------------------------------------
void V8ContextImpl::SetMaxIsolateHeapSize(size_t value)
{
m_spIsolateImpl->SetMaxHeapSize(value);
}
//-----------------------------------------------------------------------------
double V8ContextImpl::GetIsolateHeapSizeSampleInterval()
{
return m_spIsolateImpl->GetHeapSizeSampleInterval();
}
//-----------------------------------------------------------------------------
void V8ContextImpl::SetIsolateHeapSizeSampleInterval(double value)
{
m_spIsolateImpl->SetHeapSizeSampleInterval(value);
}
//-----------------------------------------------------------------------------
size_t V8ContextImpl::GetMaxIsolateStackUsage()
{
return m_spIsolateImpl->GetMaxStackUsage();
}
//-----------------------------------------------------------------------------
void V8ContextImpl::SetMaxIsolateStackUsage(size_t value)
{
m_spIsolateImpl->SetMaxStackUsage(value);
}
//-----------------------------------------------------------------------------
void V8ContextImpl::CallWithLock(CallWithLockCallback* pCallback, void* pvAction)
{
VerifyNotOutOfMemory();
BEGIN_ISOLATE_SCOPE
(*pCallback)(pvAction);
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
void V8ContextImpl::CallWithLockWithArg(CallWithLockWithArgCallback* pCallback, void* pvAction, void* pvArg)
{
VerifyNotOutOfMemory();
BEGIN_ISOLATE_SCOPE
(*pCallback)(pvAction, pvArg);
END_ISOLATE_SCOPE
}
//-----------------------------------------------------------------------------
V8Value V8ContextImpl::GetRootObject()
{
BEGIN_CONTEXT_SCOPE
return ExportValue(m_hContext->Global());
END_CONTEXT_SCOPE
}
//-----------------------------------------------------------------------------
void V8ContextImpl::SetGlobalProperty(const StdString& name, const V8Value& value, bool globalMembers)
{
BEGIN_CONTEXT_SCOPE
FROM_MAYBE_TRY
auto hName = FROM_MAYBE(CreateString(name));
auto hValue = ::ValueAsObject(ImportValue(value));
v8::Local<v8::Object> hOldValue;
if (FROM_MAYBE(m_hContext->Global()->HasOwnProperty(m_hContext, hName)))
{
hOldValue = ::ValueAsObject(FROM_MAYBE(m_hContext->Global()->GetRealNamedProperty(m_hContext, hName)));
}
auto result = FROM_MAYBE(m_hContext->Global()->DefineOwnProperty(m_hContext, hName, hValue, v8::ReadOnly));
if (result && globalMembers && !hValue.IsEmpty())
{
if (!hOldValue.IsEmpty())
{
for (auto it = m_GlobalMembersStack.begin(); it != m_GlobalMembersStack.end(); it++)
{
if (it->first == name)
{
Dispose(it->second);
m_GlobalMembersStack.erase(it);
break;
}
}
}
m_GlobalMembersStack.emplace_back(name, CreatePersistent(hValue));
}
FROM_MAYBE_CATCH
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("The V8 runtime cannot perform the requested operation because a script exception is pending")), false);
FROM_MAYBE_END
END_CONTEXT_SCOPE
}
//-----------------------------------------------------------------------------
void V8ContextImpl::AwaitDebuggerAndPause()
{
m_spIsolateImpl->AwaitDebuggerAndPause();
}
//-----------------------------------------------------------------------------
void V8ContextImpl::CancelAwaitDebugger()
{
m_spIsolateImpl->CancelAwaitDebugger();
}
//-----------------------------------------------------------------------------
V8Value V8ContextImpl::Execute(const V8DocumentInfo& documentInfo, const StdString& code, bool evaluate)
{
BEGIN_CONTEXT_SCOPE
BEGIN_DOCUMENT_SCOPE(documentInfo)
BEGIN_EXECUTION_SCOPE
FROM_MAYBE_TRY
auto codeDigest = code.GetDigest();
v8::ScriptCompiler::Source source(FROM_MAYBE(CreateString(code)), CreateScriptOrigin(documentInfo));
v8::Local<v8::Value> hResult;
if (documentInfo.IsModule())
{
auto hModule = GetCachedModule(documentInfo.GetUniqueId(), codeDigest);
if (hModule.IsEmpty())
{
hModule = VERIFY_MAYBE(CompileModule(&source));
if (hModule.IsEmpty())
{
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("Module compilation failed; no additional information was provided by the V8 runtime")), false);
}
CacheModule(documentInfo, codeDigest, hModule);
}
if (hModule->GetStatus() == v8::Module::kUninstantiated)
{
ASSERT_EVAL(VERIFY_MAYBE(hModule->InstantiateModule(m_hContext, V8IsolateImpl::ModuleResolveCallback)));
}
if (hModule->GetStatus() == v8::Module::kInstantiated)
{
hResult = VERIFY_MAYBE(hModule->Evaluate(m_hContext));
if (hResult->IsPromise())
{
auto hPromise = hResult.As<v8::Promise>();
if (hModule->IsGraphAsync() || (hPromise->State() == v8::Promise::PromiseState::kPending))
{
v8::Local<v8::Object> hMetaHolder;
if (TryGetCachedModuleMetaHolder(hModule, hMetaHolder))
{
if (m_hGetModuleResultFunction.IsEmpty())
{
m_hGetModuleResultFunction = CreatePersistent(FROM_MAYBE(GetEngineInternal()->Get(m_hContext, CreateString("getModuleResult"))).As<v8::Function>());
}
v8::Local<v8::Value> args[] = { hResult, hMetaHolder };
hResult = FROM_MAYBE(m_hGetModuleResultFunction->Call(m_hContext, GetUndefined(), 2, args));
}
}
else if (hPromise->State() == v8::Promise::PromiseState::kFulfilled)
{
hResult = hPromise->Result();
if (evaluate && (hResult.IsEmpty() || hResult->IsUndefined()))
{
v8::Local<v8::Object> hMetaHolder;
if (TryGetCachedModuleMetaHolder(hModule, hMetaHolder))
{
auto hMeta = ::ValueAsObject(FROM_MAYBE(hMetaHolder->Get(m_hContext, 0)));
if (!hMeta.IsEmpty())
{
hResult = FROM_MAYBE(hMeta->Get(m_hContext, m_hModuleResultKey));
}
}
}
}
else if (hPromise->State() == v8::Promise::PromiseState::kRejected)
{
auto hException = hPromise->Result();
if (hException->IsObject())
{
auto hExceptionObject = hException.As<v8::Object>();
auto hHostException = FROM_MAYBE(hExceptionObject->Get(m_hContext, m_hHostExceptionKey));
throw V8Exception(V8Exception::Type::General, m_Name, CreateStdString(hExceptionObject), CreateStdString(FROM_MAYBE(hExceptionObject->Get(m_hContext, m_hStackKey))), EXECUTION_STARTED, ExportValue(hException), ExportValue(hHostException));
}
throw V8Exception(V8Exception::Type::General, m_Name, CreateStdString(hException), StdString(), EXECUTION_STARTED, ExportValue(hException), V8Value(V8Value::Undefined));
}
}
}
else
{
evaluate = false;
}
}
else
{
auto hScript = GetCachedScript(documentInfo.GetUniqueId(), codeDigest);
if (hScript.IsEmpty())
{
hScript = VERIFY_MAYBE(CompileUnboundScript(&source));
if (hScript.IsEmpty())
{
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("Script compilation failed; no additional information was provided by the V8 runtime")), false);
}
CacheScript(documentInfo, codeDigest, hScript);
}
hResult = VERIFY_MAYBE(hScript->BindToCurrentContext()->Run(m_hContext));
}
if (!evaluate)
{
hResult = GetUndefined();
}
return ExportValue(hResult);
FROM_MAYBE_CATCH
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("The V8 runtime cannot perform the requested operation because a script exception is pending")), EXECUTION_STARTED);
FROM_MAYBE_END
END_EXECUTION_SCOPE
END_DOCUMENT_SCOPE
END_CONTEXT_SCOPE
}
//-----------------------------------------------------------------------------
V8ScriptHolder* V8ContextImpl::Compile(const V8DocumentInfo& documentInfo, StdString&& code)
{
BEGIN_CONTEXT_SCOPE
BEGIN_DOCUMENT_SCOPE(documentInfo)
BEGIN_EXECUTION_SCOPE
FROM_MAYBE_TRY
auto codeDigest = code.GetDigest();
v8::ScriptCompiler::Source source(FROM_MAYBE(CreateString(code)), CreateScriptOrigin(documentInfo));
std::unique_ptr<V8ScriptHolder> upScriptHolder;
if (documentInfo.IsModule())
{
auto hModule = GetCachedModule(documentInfo.GetUniqueId(), codeDigest);
if (hModule.IsEmpty())
{
hModule = VERIFY_MAYBE(CompileModule(&source));
if (hModule.IsEmpty())
{
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("Module compilation failed; no additional information was provided by the V8 runtime")), false);
}
CacheModule(documentInfo, codeDigest, hModule);
}
upScriptHolder.reset(new V8ScriptHolderImpl(GetWeakBinding(), ::PtrFromHandle(CreatePersistent(hModule)), documentInfo, codeDigest, std::move(code)));
}
else
{
auto hScript = GetCachedScript(documentInfo.GetUniqueId(), codeDigest);
if (hScript.IsEmpty())
{
hScript = VERIFY_MAYBE(CompileUnboundScript(&source));
if (hScript.IsEmpty())
{
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("Script compilation failed; no additional information was provided by the V8 runtime")), false);
}
CacheScript(documentInfo, codeDigest, hScript);
}
upScriptHolder.reset(new V8ScriptHolderImpl(GetWeakBinding(), ::PtrFromHandle(CreatePersistent(hScript)), documentInfo, codeDigest));
}
return upScriptHolder.release();
FROM_MAYBE_CATCH
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("The V8 runtime cannot perform the requested operation because a script exception is pending")), EXECUTION_STARTED);
FROM_MAYBE_END
END_EXECUTION_SCOPE
END_DOCUMENT_SCOPE
END_CONTEXT_SCOPE
}
//-----------------------------------------------------------------------------
V8ScriptHolder* V8ContextImpl::Compile(const V8DocumentInfo& documentInfo, StdString&& code, V8CacheKind cacheKind, std::vector<uint8_t>& cacheBytes)
{
if (cacheKind == V8CacheKind::None)
{
cacheBytes.clear();
return Compile(documentInfo, std::move(code));
}
BEGIN_CONTEXT_SCOPE
BEGIN_DOCUMENT_SCOPE(documentInfo)
BEGIN_EXECUTION_SCOPE
FROM_MAYBE_TRY
auto codeDigest = code.GetDigest();
v8::ScriptCompiler::Source source(FROM_MAYBE(CreateString(code)), CreateScriptOrigin(documentInfo));
std::unique_ptr<V8ScriptHolder> upScriptHolder;
if (documentInfo.IsModule())
{
auto hModule = GetCachedModule(documentInfo.GetUniqueId(), codeDigest, cacheBytes);
if (hModule.IsEmpty())
{
hModule = VERIFY_MAYBE(CompileModule(&source));
if (hModule.IsEmpty())
{
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("Module compilation failed; no additional information was provided by the V8 runtime")), false);
}
std::unique_ptr<v8::ScriptCompiler::CachedData> upCachedData(v8::ScriptCompiler::CreateCodeCache(hModule->GetUnboundModuleScript()));
if (upCachedData && (upCachedData->length > 0) && (upCachedData->data != nullptr))
{
cacheBytes.resize(upCachedData->length);
memcpy(cacheBytes.data(), upCachedData->data, upCachedData->length);
}
CacheModule(documentInfo, codeDigest, hModule, cacheBytes);
}
else if (cacheBytes.empty())
{
std::unique_ptr<v8::ScriptCompiler::CachedData> upCachedData(v8::ScriptCompiler::CreateCodeCache(hModule->GetUnboundModuleScript()));
if (upCachedData && (upCachedData->length > 0) && (upCachedData->data != nullptr))
{
cacheBytes.resize(upCachedData->length);
memcpy(cacheBytes.data(), upCachedData->data, upCachedData->length);
SetCachedModuleCacheBytes(documentInfo.GetUniqueId(), codeDigest, cacheBytes);
}
}
upScriptHolder.reset(new V8ScriptHolderImpl(GetWeakBinding(), ::PtrFromHandle(CreatePersistent(hModule)), documentInfo, codeDigest, std::move(code)));
}
else
{
auto hScript = GetCachedScript(documentInfo.GetUniqueId(), codeDigest, cacheBytes);
if (hScript.IsEmpty())
{
hScript = VERIFY_MAYBE(CompileUnboundScript(&source));
if (hScript.IsEmpty())
{
throw V8Exception(V8Exception::Type::General, m_Name, StdString(SL("Script compilation failed; no additional information was provided by the V8 runtime")), false);
}
std::unique_ptr<v8::ScriptCompiler::CachedData> upCachedData(v8::ScriptCompiler::CreateCodeCache(hScript));
if (upCachedData && (upCachedData->length > 0) && (upCachedData->data != nullptr))
{
cacheBytes.resize(upCachedData->length);
memcpy(cacheBytes.data(), upCachedData->data, upCachedData->length);
}
CacheScript(documentInfo, codeDigest, hScript, cacheBytes);
}
else if (cacheBytes.empty())
{
std::unique_ptr<v8::ScriptCompiler::CachedData> upCachedData(v8::ScriptCompiler::CreateCodeCache(hScript));
if (upCachedData && (upCachedData->length > 0) && (upCachedData->data != nullptr))
{