/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     io_IOStream.cpp

  Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Revision: 13145 $
 *---------------------------------------------------------------------------*/

#include "precompiled.h"

#include <nw/io/io_IOStream.h>

#include <nw/types.h>
#include <nw/assert.h>
#include <nw/ut/ut_RuntimeTypeInfo.h>


namespace nw {
namespace io   {

NW_UT_RUNTIME_TYPEINFO_ROOT_DEFINITION( IOStream );


s32
IOStream::Read(void* /*buf*/, u32 /*length*/)
{
    NW_ASSERTMSG( CanRead(), "Stream don't support READ function\n" );
    return 0;
}


bool
IOStream::ReadAsync(
        void* /*buf*/,
        u32 /*length*/,
        IOStreamCallback /*callback*/,
        void* /*arg*/)
{
    NW_ASSERTMSG( CanRead(), "Stream don't support READ function\n" );
    NW_ASSERTMSG( CanAsync(), "Stream don't support ASYNC function\n" );
    return false;
}


s32
IOStream::Write(const void* /*buf*/, u32 /*length*/)
{
    NW_ASSERTMSG( CanWrite(), "Stream don't support WRITE function\n" );
    return 0;
}


bool
IOStream::WriteAsync(
        const void* /*buf*/,
        u32 /*length*/,
        IOStreamCallback /*callback*/,
        void* /*arg*/)
{
    NW_ASSERTMSG( CanWrite(), "Stream don't support WRITE function\n" );
    NW_ASSERTMSG( CanAsync(), "Stream don't support ASYNC function\n" );
    return false;
}

s32
IOStream::WaitAsync() const
{
    NW_ASSERTMSG( CanAsync(), "Stream don't support ASYNC function\n" );
    
    while ( IsBusy() ) {}
    return mAsyncResult;
}

bool
IOStream::IsBusy() const
{
    NW_ASSERTMSG( CanAsync(), "Stream don't support ASYNC function\n" );
    return false;
}


}   /* namespace io */
}   /* namespace nw */