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// Copyright 2012 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_ACCESSORS_H_
#define V8_ACCESSORS_H_
#include "include/v8.h"
#include "src/allocation.h"
#include "src/globals.h"
#include "src/property-details.h"
namespace v8 {
namespace internal {
// Forward declarations.
class AccessorInfo;
template <typename T>
class Handle;
// The list of accessor descriptors. This is a second-order macro
// taking a macro to be applied to all accessor descriptor names.
#define ACCESSOR_INFO_LIST(V) \
V(ArgumentsIterator) \
V(ArrayLength) \
V(BoundFunctionLength) \
V(BoundFunctionName) \
V(ErrorStack) \
V(FunctionArguments) \
V(FunctionCaller) \
V(FunctionName) \
V(FunctionLength) \
V(FunctionPrototype) \
V(ScriptColumnOffset) \
V(ScriptCompilationType) \
V(ScriptContextData) \
V(ScriptEvalFromScript) \
V(ScriptEvalFromScriptPosition) \
V(ScriptEvalFromFunctionName) \
V(ScriptId) \
V(ScriptLineOffset) \
V(ScriptName) \
V(ScriptSource) \
V(ScriptType) \
V(ScriptSourceUrl) \
V(ScriptSourceMappingUrl) \
V(StringLength)
#define ACCESSOR_SETTER_LIST(V) \
V(ArrayLengthSetter) \
V(ErrorStackSetter) \
V(FunctionPrototypeSetter) \
V(ModuleNamespaceEntrySetter) \
V(ReconfigureToDataProperty)
// Accessors contains all predefined proxy accessors.
class Accessors : public AllStatic {
public:
// Accessor descriptors.
#define ACCESSOR_INFO_DECLARATION(name) \
static void name##Getter( \
v8::Local<v8::Name> name, \
const v8::PropertyCallbackInfo<v8::Value>& info); \
static Handle<AccessorInfo> name##Info( \
Isolate* isolate, \
PropertyAttributes attributes);
ACCESSOR_INFO_LIST(ACCESSOR_INFO_DECLARATION)
#undef ACCESSOR_INFO_DECLARATION
#define ACCESSOR_SETTER_DECLARATION(name) \
static void name(v8::Local<v8::Name> name, v8::Local<v8::Value> value, \
const v8::PropertyCallbackInfo<v8::Boolean>& info);
ACCESSOR_SETTER_LIST(ACCESSOR_SETTER_DECLARATION)
#undef ACCESSOR_SETTER_DECLARATION
static void ModuleNamespaceEntryGetter(
v8::Local<v8::Name> name,
const v8::PropertyCallbackInfo<v8::Value>& info);
static Handle<AccessorInfo> ModuleNamespaceEntryInfo(
Isolate* isolate, Handle<String> name, PropertyAttributes attributes);
enum DescriptorId {
#define ACCESSOR_INFO_DECLARATION(name) \
k##name##Getter, \
k##name##Setter,
ACCESSOR_INFO_LIST(ACCESSOR_INFO_DECLARATION)
#undef ACCESSOR_INFO_DECLARATION
descriptorCount
};
// Accessor functions called directly from the runtime system.
MUST_USE_RESULT static MaybeHandle<Object> FunctionSetPrototype(
Handle<JSFunction> object, Handle<Object> value);
static Handle<JSObject> FunctionGetArguments(Handle<JSFunction> object);
// Returns true for properties that are accessors to object fields.
// If true, *object_offset contains offset of object field.
static bool IsJSObjectFieldAccessor(Handle<Map> map, Handle<Name> name,
int* object_offset);
// Create an AccessorInfo. The setter is optional (can be nullptr).
//
// Note that the type of setter is AccessorNameBooleanSetterCallback instead
// of v8::AccessorNameSetterCallback. The difference is that the former can
// set a (boolean) return value. The setter should roughly follow the same
// conventions as many of the internal methods in objects.cc:
// - The return value is unset iff there was an exception.
// - If the ShouldThrow argument is true, the return value must not be false.
typedef void (*AccessorNameBooleanSetterCallback)(
Local<v8::Name> property, Local<v8::Value> value,
const PropertyCallbackInfo<v8::Boolean>& info);
static Handle<AccessorInfo> MakeAccessor(
Isolate* isolate, Handle<Name> name, AccessorNameGetterCallback getter,
AccessorNameBooleanSetterCallback setter, PropertyAttributes attributes);
};
} // namespace internal
} // namespace v8
#endif // V8_ACCESSORS_H_
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