src/objects/api-callbacks-inl.h

// 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 "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/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, is_special_data_property,
                    AccessorInfo::IsSpecialDataPropertyBit)
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));
}

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)
BOOL_ACCESSORS(InterceptorInfo, flags, has_new_callbacks_signature,
               HasNewCallbacksSignatureBit::kShift)

}  // namespace internal
}  // namespace v8

#include "src/objects/object-macros-undef.h"

#endif  // V8_OBJECTS_API_CALLBACKS_INL_H_