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** Alternatively, this file may be used under the terms of the GNU Lesser
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** Alternatively, this file may be used under the terms of the GNU
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#ifndef QV4TYPEDARRAY_H
#define QV4TYPEDARRAY_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"
#include "qv4arraybuffer_p.h"

QT_BEGIN_NAMESPACE

namespace QV4 {

struct ArrayBuffer;

typedef ReturnedValue (*TypedArrayRead)(const char *data, int index);
typedef void (*TypedArrayWrite)(ExecutionEngine *engine, char *data, int index, const Value &value);

struct TypedArrayOperations {
    int bytesPerElement;
    const char *name;
    TypedArrayRead read;
    TypedArrayWrite write;
};

namespace Heap {

#define TypedArrayMembers(class, Member) \
    Member(class, Pointer, ArrayBuffer *, buffer) \
    Member(class, NoMark, const TypedArrayOperations *, type) \
    Member(class, NoMark, uint, byteLength) \
    Member(class, NoMark, uint, byteOffset) \
    Member(class, NoMark, uint, arrayType)

DECLARE_HEAP_OBJECT(TypedArray, Object) {
    DECLARE_MARKOBJECTS(TypedArray);
    enum Type {
        Int8Array,
        UInt8Array,
        UInt8ClampedArray,
        Int16Array,
        UInt16Array,
        Int32Array,
        UInt32Array,
        Float32Array,
        Float64Array,
        NTypes
    };

    void init(Type t);
};

struct IntrinsicTypedArrayCtor : FunctionObject {
};

struct TypedArrayCtor : FunctionObject {
    void init(QV4::ExecutionContext *scope, TypedArray::Type t);

    TypedArray::Type type;
};

struct IntrinsicTypedArrayPrototype : Object {
};

struct TypedArrayPrototype : Object {
    inline void init(TypedArray::Type t);
    TypedArray::Type type;
};


}

struct Q_QML_PRIVATE_EXPORT TypedArray : Object
{
    V4_OBJECT2(TypedArray, Object)

    static Heap::TypedArray *create(QV4::ExecutionEngine *e, Heap::TypedArray::Type t);

    uint byteLength() const {
        return d()->byteLength;
    }

    uint length() const {
        return d()->byteLength/d()->type->bytesPerElement;
    }

    QTypedArrayData<char> *arrayData() {
        return d()->buffer->data;
    }

    Heap::TypedArray::Type arrayType() const {
        return static_cast<Heap::TypedArray::Type>(d()->arrayType);
    }

    static ReturnedValue getIndexed(const Managed *m, uint index, bool *hasProperty);
    static bool putIndexed(Managed *m, uint index, const Value &value);
};

struct IntrinsicTypedArrayCtor: FunctionObject
{
    V4_OBJECT2(IntrinsicTypedArrayCtor, FunctionObject)

    static ReturnedValue callAsConstructor(const FunctionObject *f, const Value *argv, int argc);
    static ReturnedValue call(const FunctionObject *f, const Value *thisObject, const Value *argv, int argc);
};

struct TypedArrayCtor: FunctionObject
{
    V4_OBJECT2(TypedArrayCtor, FunctionObject)

    static ReturnedValue callAsConstructor(const FunctionObject *f, const Value *argv, int argc);
    static ReturnedValue call(const FunctionObject *f, const Value *thisObject, const Value *argv, int argc);
};

struct IntrinsicTypedArrayPrototype : Object
{
    V4_OBJECT2(IntrinsicTypedArrayPrototype, Object)
    V4_PROTOTYPE(objectPrototype)

    void init(ExecutionEngine *engine, IntrinsicTypedArrayCtor *ctor);

    static ReturnedValue method_get_buffer(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
    static ReturnedValue method_get_byteLength(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
    static ReturnedValue method_get_byteOffset(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
    static ReturnedValue method_get_length(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);

    static ReturnedValue method_entries(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
    static ReturnedValue method_keys(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
    static ReturnedValue method_values(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
    static ReturnedValue method_set(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
    static ReturnedValue method_subarray(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);

    static ReturnedValue method_get_toStringTag(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);

};

struct TypedArrayPrototype : Object
{
    V4_OBJECT2(TypedArrayPrototype, Object)
    V4_PROTOTYPE(objectPrototype)

    void init(ExecutionEngine *engine, TypedArrayCtor *ctor);
};

inline void
Heap::TypedArrayPrototype::init(TypedArray::Type t)
{
    Object::init();
    type = t;
}

} // namespace QV4

QT_END_NAMESPACE

#endif