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// Copyright 2017 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_ARGUMENTS_H_
#define V8_OBJECTS_ARGUMENTS_H_
#include "src/objects/fixed-array.h"
#include "src/objects/js-objects.h"
#include "src/objects/struct.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
class StructBodyDescriptor;
#include "torque-generated/src/objects/arguments-tq.inc"
// Superclass for all objects with instance type {JS_ARGUMENTS_OBJECT_TYPE}
class JSArgumentsObject
: public TorqueGeneratedJSArgumentsObject<JSArgumentsObject, JSObject> {
public:
DECL_VERIFIER(JSArgumentsObject)
DECL_PRINTER(JSArgumentsObject)
TQ_OBJECT_CONSTRUCTORS(JSArgumentsObject)
};
// JSSloppyArgumentsObject is just a JSArgumentsObject with specific initial
// map. This initial map adds in-object properties for "length" and "callee".
class JSSloppyArgumentsObject
: public TorqueGeneratedJSSloppyArgumentsObject<JSSloppyArgumentsObject,
JSArgumentsObject> {
public:
// Indices of in-object properties.
static const int kLengthIndex = 0;
static const int kCalleeIndex = kLengthIndex + 1;
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSSloppyArgumentsObject);
};
// JSStrictArgumentsObject is just a JSArgumentsObject with specific initial
// map. This initial map adds an in-object property for "length".
class JSStrictArgumentsObject
: public TorqueGeneratedJSStrictArgumentsObject<JSStrictArgumentsObject,
JSArgumentsObject> {
public:
// Indices of in-object properties.
static const int kLengthIndex = 0;
STATIC_ASSERT(kLengthIndex == JSSloppyArgumentsObject::kLengthIndex);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(JSStrictArgumentsObject);
};
// Representation of a slow alias as part of a sloppy arguments objects.
// For fast aliases (if HasSloppyArgumentsElements()):
// - the parameter map contains an index into the context
// - all attributes of the element have default values
// For slow aliases (if HasDictionaryArgumentsElements()):
// - the parameter map contains no fast alias mapping (i.e. the hole)
// - this struct (in the slow backing store) contains an index into the context
// - all attributes are available as part if the property details
class AliasedArgumentsEntry
: public TorqueGeneratedAliasedArgumentsEntry<AliasedArgumentsEntry,
Struct> {
public:
using BodyDescriptor = StructBodyDescriptor;
TQ_OBJECT_CONSTRUCTORS(AliasedArgumentsEntry)
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_ARGUMENTS_H_
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