api-callbacks-inl.h

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// 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_OBJECTS_API_CALLBACKS_INL_H_
#define V8_OBJECTS_API_CALLBACKS_INL_H_
 
#include "src/objects/api-callbacks.h"
// Include the non-inl header before the rest of the headers.
 
#include "src/heap/heap-write-barrier-inl.h"
#include "src/heap/heap-write-barrier.h"
#include "src/objects/foreign-inl.h"
#include "src/objects/js-objects-inl.h"
#include "src/objects/name.h"
#include "src/objects/oddball.h"
#include "src/objects/templates.h"
 
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
 
namespace v8 {
namespace internal {
 
#include "torque-generated/src/objects/api-callbacks-tq-inl.inc"
 
TQ_OBJECT_CONSTRUCTORS_IMPL(AccessCheckInfo)
TQ_OBJECT_CONSTRUCTORS_IMPL(AccessorInfo)
TQ_OBJECT_CONSTRUCTORS_IMPL(InterceptorInfo)
 
EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(AccessorInfo,
                                                maybe_redirected_getter,
                                                Address,
                                                kMaybeRedirectedGetterOffset,
                                                kAccessorInfoGetterTag)
EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(AccessorInfo, setter, Address,
                                                kSetterOffset,
                                                kAccessorInfoSetterTag)
 
Address AccessorInfo::getter(i::IsolateForSandbox isolate) const {
  Address result = maybe_redirected_getter(isolate);
  if (!USE_SIMULATOR_BOOL) return result;
  if (result == kNullAddress) return kNullAddress;
  return ExternalReference::UnwrapRedirection(result);
}
 
void AccessorInfo::init_getter(i::IsolateForSandbox isolate,
                               Address initial_value) {
  init_maybe_redirected_getter(isolate, initial_value);
  if (USE_SIMULATOR_BOOL) {
    init_getter_redirection(isolate);
  }
}
 
void AccessorInfo::set_getter(i::IsolateForSandbox isolate, Address value) {
  set_maybe_redirected_getter(isolate, value);
  if (USE_SIMULATOR_BOOL) {
    init_getter_redirection(isolate);
  }
}
 
void AccessorInfo::init_getter_redirection(i::IsolateForSandbox isolate) {
  CHECK(USE_SIMULATOR_BOOL);
  Address value = maybe_redirected_getter(isolate);
  if (value == kNullAddress) return;
  value =
      ExternalReference::Redirect(value, ExternalReference::DIRECT_GETTER_CALL);
  set_maybe_redirected_getter(isolate, value);
}
 
void AccessorInfo::remove_getter_redirection(i::IsolateForSandbox isolate) {
  CHECK(USE_SIMULATOR_BOOL);
  Address value = getter(isolate);
  set_maybe_redirected_getter(isolate, value);
}
 
bool AccessorInfo::has_getter(Isolate* isolate) {
  return maybe_redirected_getter(isolate) != kNullAddress;
}
 
bool AccessorInfo::has_setter(Isolate* isolate) {
  return setter(isolate) != kNullAddress;
}
 
BIT_FIELD_ACCESSORS(AccessorInfo, flags, replace_on_access,
                    AccessorInfo::ReplaceOnAccessBit)
BIT_FIELD_ACCESSORS(AccessorInfo, flags, is_sloppy, AccessorInfo::IsSloppyBit)
BIT_FIELD_ACCESSORS(AccessorInfo, flags, getter_side_effect_type,
                    AccessorInfo::GetterSideEffectTypeBits)
 
SideEffectType AccessorInfo::setter_side_effect_type() const {
  return SetterSideEffectTypeBits::decode(flags());
}
 
void AccessorInfo::set_setter_side_effect_type(SideEffectType value) {
  // We do not support describing setters as having no side effect, since
  // calling set accessors must go through a store bytecode. Store bytecodes
  // support checking receivers for temporary objects, but still expect
  // the receiver to be written to.
  CHECK_NE(value, SideEffectType::kHasNoSideEffect);
  set_flags(SetterSideEffectTypeBits::update(flags(), value));
}
 
BIT_FIELD_ACCESSORS(AccessorInfo, flags, initial_property_attributes,
                    AccessorInfo::InitialAttributesBits)
 
void AccessorInfo::clear_padding() {
  if (FIELD_SIZE(kOptionalPaddingOffset) == 0) return;
  memset(reinterpret_cast<void*>(address() + kOptionalPaddingOffset), 0,
         FIELD_SIZE(kOptionalPaddingOffset));
}
 
// For the purpose of checking whether the respective callback field is
// initialized we can use any of the named/indexed versions.
#define INTERCEPTOR_INFO_HAS_GETTER(name) \
  bool InterceptorInfo::has_##name() const { return has_named_##name(); }
 
INTERCEPTOR_INFO_HAS_GETTER(getter)
INTERCEPTOR_INFO_HAS_GETTER(setter)
INTERCEPTOR_INFO_HAS_GETTER(query)
INTERCEPTOR_INFO_HAS_GETTER(descriptor)
INTERCEPTOR_INFO_HAS_GETTER(deleter)
INTERCEPTOR_INFO_HAS_GETTER(definer)
INTERCEPTOR_INFO_HAS_GETTER(enumerator)
 
#undef INTERCEPTOR_INFO_HAS_GETTER
 
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, named_getter, Address, kGetterOffset,
    kApiNamedPropertyGetterCallbackTag, is_named(),
    is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, named_setter, Address, kSetterOffset,
    kApiNamedPropertySetterCallbackTag, is_named(),
    is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, named_query, Address, kQueryOffset,
    kApiNamedPropertyQueryCallbackTag, is_named(),
    is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, named_descriptor, Address, kDescriptorOffset,
    kApiNamedPropertyDescriptorCallbackTag, is_named(),
    is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, named_deleter, Address, kDeleterOffset,
    kApiNamedPropertyDeleterCallbackTag, is_named(),
    is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, named_enumerator, Address, kEnumeratorOffset,
    kApiNamedPropertyEnumeratorCallbackTag, is_named(),
    is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, named_definer, Address, kDefinerOffset,
    kApiNamedPropertyDefinerCallbackTag, is_named(),
    is_named() && (value != kNullAddress))
 
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, indexed_getter, Address, kGetterOffset,
    kApiIndexedPropertyGetterCallbackTag, !is_named(),
    !is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, indexed_setter, Address, kSetterOffset,
    kApiIndexedPropertySetterCallbackTag, !is_named(),
    !is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, indexed_query, Address, kQueryOffset,
    kApiIndexedPropertyQueryCallbackTag, !is_named(),
    !is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, indexed_descriptor, Address, kDescriptorOffset,
    kApiIndexedPropertyDescriptorCallbackTag, !is_named(),
    !is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, indexed_deleter, Address, kDeleterOffset,
    kApiIndexedPropertyDeleterCallbackTag, !is_named(),
    !is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, indexed_enumerator, Address, kEnumeratorOffset,
    kApiIndexedPropertyEnumeratorCallbackTag, !is_named(),
    !is_named() && (value != kNullAddress))
LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST_CHECKED2(
    InterceptorInfo, indexed_definer, Address, kDefinerOffset,
    kApiIndexedPropertyDefinerCallbackTag, !is_named(),
    !is_named() && (value != kNullAddress))
 
BOOL_ACCESSORS(InterceptorInfo, flags, can_intercept_symbols,
               CanInterceptSymbolsBit::kShift)
BOOL_ACCESSORS(InterceptorInfo, flags, non_masking, NonMaskingBit::kShift)
BOOL_ACCESSORS(InterceptorInfo, flags, is_named, NamedBit::kShift)
BOOL_ACCESSORS(InterceptorInfo, flags, has_no_side_effect,
               HasNoSideEffectBit::kShift)
// TODO(ishell): remove once all the Api changes are done.
BOOL_ACCESSORS(InterceptorInfo, flags, has_new_callbacks_signature,
               HasNewCallbacksSignatureBit::kShift)
 
void InterceptorInfo::clear_padding() {
  if (FIELD_SIZE(kOptionalPaddingOffset) == 0) return;
  memset(reinterpret_cast<void*>(address() + kOptionalPaddingOffset), 0,
         FIELD_SIZE(kOptionalPaddingOffset));
}
 
}  // namespace internal
}  // namespace v8
 
#include "src/objects/object-macros-undef.h"
 
#endif  // V8_OBJECTS_API_CALLBACKS_INL_H_