// Copyright 2018 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. #ifndef V8_API_API_INL_H_ #define V8_API_API_INL_H_ #include "src/api/api.h" #include "src/handles/handles-inl.h" #include "src/objects/foreign-inl.h" #include "src/objects/js-weak-refs.h" #include "src/objects/objects-inl.h" #include "src/objects/stack-frame-info.h" namespace v8 { template <typename T> inline T ToCData(v8::internal::Object obj) { STATIC_ASSERT(sizeof(T) == sizeof(v8::internal::Address)); if (obj == v8::internal::Smi::zero()) return nullptr; return reinterpret_cast<T>( v8::internal::Foreign::cast(obj).foreign_address()); } template <> inline v8::internal::Address ToCData(v8::internal::Object obj) { if (obj == v8::internal::Smi::zero()) return v8::internal::kNullAddress; return v8::internal::Foreign::cast(obj).foreign_address(); } template <typename T> inline v8::internal::Handle<v8::internal::Object> FromCData( v8::internal::Isolate* isolate, T obj) { STATIC_ASSERT(sizeof(T) == sizeof(v8::internal::Address)); if (obj == nullptr) return handle(v8::internal::Smi::zero(), isolate); return isolate->factory()->NewForeign( reinterpret_cast<v8::internal::Address>(obj)); } template <> inline v8::internal::Handle<v8::internal::Object> FromCData( v8::internal::Isolate* isolate, v8::internal::Address obj) { if (obj == v8::internal::kNullAddress) { return handle(v8::internal::Smi::zero(), isolate); } return isolate->factory()->NewForeign(obj); } template <class From, class To> inline Local<To> Utils::Convert(v8::internal::Handle<From> obj) { DCHECK(obj.is_null() || (obj->IsSmi() || !obj->IsTheHole())); return Local<To>(reinterpret_cast<To*>(obj.location())); } // Implementations of ToLocal #define MAKE_TO_LOCAL(Name, From, To) \ Local<v8::To> Utils::Name(v8::internal::Handle<v8::internal::From> obj) { \ return Convert<v8::internal::From, v8::To>(obj); \ } #define MAKE_TO_LOCAL_TYPED_ARRAY(Type, typeName, TYPE, ctype) \ Local<v8::Type##Array> Utils::ToLocal##Type##Array( \ v8::internal::Handle<v8::internal::JSTypedArray> obj) { \ DCHECK(obj->type() == v8::internal::kExternal##Type##Array); \ return Convert<v8::internal::JSTypedArray, v8::Type##Array>(obj); \ } MAKE_TO_LOCAL(ToLocal, AccessorPair, debug::AccessorPair) MAKE_TO_LOCAL(ToLocal, Context, Context) MAKE_TO_LOCAL(ToLocal, Object, Value) MAKE_TO_LOCAL(ToLocal, Module, Module) MAKE_TO_LOCAL(ToLocal, Name, Name) MAKE_TO_LOCAL(ToLocal, String, String) MAKE_TO_LOCAL(ToLocal, Symbol, Symbol) MAKE_TO_LOCAL(ToLocal, JSRegExp, RegExp) MAKE_TO_LOCAL(ToLocal, JSReceiver, Object) MAKE_TO_LOCAL(ToLocal, JSObject, Object) MAKE_TO_LOCAL(ToLocal, JSFunction, Function) MAKE_TO_LOCAL(ToLocal, JSArray, Array) MAKE_TO_LOCAL(ToLocal, JSMap, Map) MAKE_TO_LOCAL(ToLocal, JSSet, Set) MAKE_TO_LOCAL(ToLocal, JSProxy, Proxy) MAKE_TO_LOCAL(ToLocal, JSArrayBuffer, ArrayBuffer) MAKE_TO_LOCAL(ToLocal, JSArrayBufferView, ArrayBufferView) MAKE_TO_LOCAL(ToLocal, JSDataView, DataView) MAKE_TO_LOCAL(ToLocal, JSTypedArray, TypedArray) MAKE_TO_LOCAL(ToLocalShared, JSArrayBuffer, SharedArrayBuffer) TYPED_ARRAYS(MAKE_TO_LOCAL_TYPED_ARRAY) MAKE_TO_LOCAL(ToLocal, FunctionTemplateInfo, FunctionTemplate) MAKE_TO_LOCAL(ToLocal, ObjectTemplateInfo, ObjectTemplate) MAKE_TO_LOCAL(SignatureToLocal, FunctionTemplateInfo, Signature) MAKE_TO_LOCAL(AccessorSignatureToLocal, FunctionTemplateInfo, AccessorSignature) MAKE_TO_LOCAL(MessageToLocal, Object, Message) MAKE_TO_LOCAL(PromiseToLocal, JSObject, Promise) MAKE_TO_LOCAL(StackTraceToLocal, FixedArray, StackTrace) MAKE_TO_LOCAL(StackFrameToLocal, StackTraceFrame, StackFrame) MAKE_TO_LOCAL(NumberToLocal, Object, Number) MAKE_TO_LOCAL(IntegerToLocal, Object, Integer) MAKE_TO_LOCAL(Uint32ToLocal, Object, Uint32) MAKE_TO_LOCAL(ToLocal, BigInt, BigInt) MAKE_TO_LOCAL(ExternalToLocal, JSObject, External) MAKE_TO_LOCAL(CallableToLocal, JSReceiver, Function) MAKE_TO_LOCAL(ToLocalPrimitive, Object, Primitive) MAKE_TO_LOCAL(ToLocal, FixedArray, PrimitiveArray) MAKE_TO_LOCAL(ScriptOrModuleToLocal, Script, ScriptOrModule) #undef MAKE_TO_LOCAL_TYPED_ARRAY #undef MAKE_TO_LOCAL // Implementations of OpenHandle #define MAKE_OPEN_HANDLE(From, To) \ v8::internal::Handle<v8::internal::To> Utils::OpenHandle( \ const v8::From* that, bool allow_empty_handle) { \ DCHECK(allow_empty_handle || that != nullptr); \ DCHECK(that == nullptr || \ v8::internal::Object( \ *reinterpret_cast<const v8::internal::Address*>(that)) \ .Is##To()); \ return v8::internal::Handle<v8::internal::To>( \ reinterpret_cast<v8::internal::Address*>( \ const_cast<v8::From*>(that))); \ } OPEN_HANDLE_LIST(MAKE_OPEN_HANDLE) #undef MAKE_OPEN_HANDLE #undef OPEN_HANDLE_LIST namespace internal { Handle<Context> HandleScopeImplementer::LastEnteredContext() { DCHECK_EQ(entered_contexts_.size(), is_microtask_context_.size()); for (size_t i = 0; i < entered_contexts_.size(); ++i) { size_t j = entered_contexts_.size() - i - 1; if (!is_microtask_context_.at(j)) { return Handle<Context>(entered_contexts_.at(j), isolate_); } } return Handle<Context>::null(); } Handle<Context> HandleScopeImplementer::LastEnteredOrMicrotaskContext() { if (entered_contexts_.empty()) return Handle<Context>::null(); return Handle<Context>(entered_contexts_.back(), isolate_); } } // namespace internal } // namespace v8 #endif // V8_API_API_INL_H_