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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#ifndef QV4ARRAYBUFFER_H
#define QV4ARRAYBUFFER_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qv4object_p.h"
#include "qv4functionobject_p.h"
QT_BEGIN_NAMESPACE
namespace QV4 {
namespace Heap {
struct SharedArrayBufferCtor : FunctionObject {
void init(QV4::ExecutionContext *scope);
};
struct ArrayBufferCtor : SharedArrayBufferCtor {
void init(QV4::ExecutionContext *scope);
};
struct Q_QML_PRIVATE_EXPORT SharedArrayBuffer : Object {
void init(size_t length);
void init(const QByteArray& array);
void destroy();
QTypedArrayData<char> *data;
bool isShared;
uint byteLength() const { return data ? data->size : 0; }
bool isDetachedBuffer() const { return !data; }
bool isSharedArrayBuffer() const { return isShared; }
};
struct Q_QML_PRIVATE_EXPORT ArrayBuffer : SharedArrayBuffer {
void init(size_t length) {
SharedArrayBuffer::init(length);
isShared = false;
}
void init(const QByteArray& array) {
SharedArrayBuffer::init(array);
isShared = false;
}
void detachArrayBuffer() {
if (data && !data->ref.deref())
QTypedArrayData<char>::deallocate(data);
data = nullptr;
}
};
}
struct SharedArrayBufferCtor : FunctionObject
{
V4_OBJECT2(SharedArrayBufferCtor, FunctionObject)
static ReturnedValue virtualCallAsConstructor(const FunctionObject *f, const Value *argv, int argc, const Value *);
static ReturnedValue virtualCall(const FunctionObject *f, const Value *thisObject, const Value *argv, int argc);
};
struct ArrayBufferCtor : SharedArrayBufferCtor
{
V4_OBJECT2(ArrayBufferCtor, SharedArrayBufferCtor)
static ReturnedValue virtualCallAsConstructor(const FunctionObject *f, const Value *argv, int argc, const Value *);
static ReturnedValue method_isView(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
};
struct Q_QML_PRIVATE_EXPORT SharedArrayBuffer : Object
{
V4_OBJECT2(SharedArrayBuffer, Object)
V4_NEEDS_DESTROY
V4_PROTOTYPE(sharedArrayBufferPrototype)
QByteArray asByteArray() const;
uint byteLength() const { return d()->byteLength(); }
char *data() { Q_ASSERT(d()->data); return d()->data->data(); }
const char *constData() { Q_ASSERT(d()->data); return d()->data->data(); }
bool isShared() { return d()->data->ref.isShared(); }
bool isDetachedBuffer() const { return !d()->data; }
bool isSharedArrayBuffer() const { return d()->isShared; }
};
struct Q_QML_PRIVATE_EXPORT ArrayBuffer : SharedArrayBuffer
{
V4_OBJECT2(ArrayBuffer, SharedArrayBuffer)
V4_NEEDS_DESTROY
V4_PROTOTYPE(arrayBufferPrototype)
QByteArray asByteArray() const;
uint byteLength() const { return d()->byteLength(); }
char *data() { detach(); return d()->data ? d()->data->data() : nullptr; }
// ### is that detach needed?
const char *constData() { detach(); return d()->data ? d()->data->data() : nullptr; }
bool isShared() { return d()->data && d()->data->ref.isShared(); }
void detach();
void detachArrayBuffer() { d()->detachArrayBuffer(); }
};
struct SharedArrayBufferPrototype : Object
{
void init(ExecutionEngine *engine, Object *ctor);
static ReturnedValue method_get_byteLength(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
static ReturnedValue method_slice(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
static ReturnedValue slice(const FunctionObject *b, const Value *thisObject, const Value *argv, int argc, bool shared);
};
struct ArrayBufferPrototype : SharedArrayBufferPrototype
{
void init(ExecutionEngine *engine, Object *ctor);
static ReturnedValue method_get_byteLength(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
static ReturnedValue method_slice(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
static ReturnedValue method_toString(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
};
} // namespace QV4
QT_END_NAMESPACE
#endif
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