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api-callbacks.h
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187 lines (149 loc) · 7.33 KB
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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_H_
#define V8_OBJECTS_API_CALLBACKS_H_
#include "src/objects/struct.h"
#include "torque-generated/bit-fields.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
class Undefined;
class StructBodyDescriptor;
#include "torque-generated/src/objects/api-callbacks-tq.inc"
// An accessor must have a getter, but can have no setter.
//
// When setting a property, V8 searches accessors in prototypes.
// If an accessor was found and it does not have a setter,
// the request is ignored.
//
// If the accessor in the prototype has the READ_ONLY property attribute, then
// a new value is added to the derived object when the property is set.
// This shadows the accessor in the prototype.
class AccessorInfo
: public TorqueGeneratedAccessorInfo<AccessorInfo, HeapObject> {
public:
// This is a wrapper around |maybe_redirected_getter| accessor which
// returns/accepts C function and converts the value from and to redirected
// pointer.
DECL_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(getter, Address)
inline void init_getter_redirection(IsolateForSandbox isolate);
inline void remove_getter_redirection(IsolateForSandbox isolate);
inline bool has_getter(Isolate* isolate);
// The field contains the address of the C function.
DECL_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(setter, Address)
inline bool has_setter(Isolate* isolate);
DECL_BOOLEAN_ACCESSORS(replace_on_access)
DECL_BOOLEAN_ACCESSORS(is_sloppy)
inline SideEffectType getter_side_effect_type() const;
inline void set_getter_side_effect_type(SideEffectType type);
inline SideEffectType setter_side_effect_type() const;
inline void set_setter_side_effect_type(SideEffectType type);
// The property attributes used when an API object template is instantiated
// for the first time. Changing of this value afterwards does not affect
// the actual attributes of a property.
inline PropertyAttributes initial_property_attributes() const;
inline void set_initial_property_attributes(PropertyAttributes attributes);
// Checks whether the given receiver is compatible with this accessor.
static bool IsCompatibleReceiverMap(Handle<AccessorInfo> info,
Handle<Map> map);
inline bool IsCompatibleReceiver(Tagged<Object> receiver);
// Append all descriptors to the array that are not already there.
// Return number added.
static int AppendUnique(Isolate* isolate, DirectHandle<Object> descriptors,
DirectHandle<FixedArray> array,
int valid_descriptors);
DECL_PRINTER(AccessorInfo)
inline void clear_padding();
class BodyDescriptor;
private:
// When simulator is enabled the field stores the "redirected" address of the
// C function (the one that's callabled from simulated compiled code), in
// this case the original address of the C function has to be taken from the
// redirection.
// For native builds the field contains the address of the C function.
// This field is initialized implicitly via respective |getter|-related
// methods.
DECL_EXTERNAL_POINTER_ACCESSORS(maybe_redirected_getter, Address)
// Bit positions in |flags|.
DEFINE_TORQUE_GENERATED_ACCESSOR_INFO_FLAGS()
TQ_OBJECT_CONSTRUCTORS(AccessorInfo)
};
class AccessCheckInfo
: public TorqueGeneratedAccessCheckInfo<AccessCheckInfo, Struct> {
public:
static Tagged<AccessCheckInfo> Get(Isolate* isolate,
DirectHandle<JSObject> receiver);
using BodyDescriptor = StructBodyDescriptor;
TQ_OBJECT_CONSTRUCTORS(AccessCheckInfo)
};
#define INTERCEPTOR_INFO_CALLBACK_LIST(V) \
V(Getter, getter) \
V(Setter, setter) \
V(Query, query) \
V(Descriptor, descriptor) \
V(Deleter, deleter) \
V(Enumerator, enumerator) \
V(Definer, definer)
class InterceptorInfo
: public TorqueGeneratedInterceptorInfo<InterceptorInfo, HeapObject> {
public:
// Convenient predicates without named/indexed prefix.
inline bool has_getter() const;
inline bool has_setter() const;
inline bool has_query() const;
inline bool has_descriptor() const;
inline bool has_deleter() const;
inline bool has_enumerator() const;
inline bool has_definer() const;
// Accessor callbacks for named interceptors.
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(named_getter,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(named_setter,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(named_query,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(named_descriptor,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(named_deleter,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(named_enumerator,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(named_definer,
Address)
// Accessor callbacks for indexed interceptors.
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(indexed_getter,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(indexed_setter,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(indexed_query,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(indexed_descriptor,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(indexed_deleter,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(indexed_enumerator,
Address)
DECL_LAZY_EXTERNAL_POINTER_ACCESSORS_MAYBE_READ_ONLY_HOST(indexed_definer,
Address)
DECL_BOOLEAN_ACCESSORS(can_intercept_symbols)
DECL_BOOLEAN_ACCESSORS(non_masking)
DECL_BOOLEAN_ACCESSORS(is_named)
DECL_BOOLEAN_ACCESSORS(has_no_side_effect)
// TODO(ishell): remove support for old signatures once they go through
// Api deprecation process.
DECL_BOOLEAN_ACCESSORS(has_new_callbacks_signature)
DEFINE_TORQUE_GENERATED_INTERCEPTOR_INFO_FLAGS()
DECL_PRINTER(InterceptorInfo)
inline void clear_padding();
class BodyDescriptor;
private:
friend class Factory;
inline void AllocateExternalPointerEntries(Isolate* isolate);
TQ_OBJECT_CONSTRUCTORS(InterceptorInfo)
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_API_CALLBACKS_H_