/** -*- C++ -*-
 **
 **  KAI C++ Compiler
 **
 **  Copyright (C) 1996-2001 Intel Corp. All rights reserved.
 **/
/**  Split by KAI into <iostream> and <iostreambase> so that users of <fstream>
 **  and <sstream> do not have to buy the overhead of __msipl_ios_init.
 **/
#ifndef __KAI_IOSTREAM
#define __KAI_IOSTREAM

#include <ios>	// for ios_base::Init
#include <iostreambase>

namespace __kai {
static std::ios_base::Init ios_init;
} 

#if KAI_NONSTD_IOSTREAM
namespace std {

// N.B. The casts of NULL in the constructors are necessary for --cfront_3.0 
// mode on machines that define NULL as 0L.  

class istream_withassign : public istream {
    typedef basic_streambuf<char,char_traits<char> > streambuf_type;
public:
    istream_withassign() : istream((streambuf_type*)NULL) { }
    virtual ~istream_withassign() { }

    istream_withassign&	operator=(istream & i) { init(i.rdbuf()); return *this; }
    istream_withassign&	operator=(streambuf * s) { init(s); return *this; }
};

class ostream_withassign : public ostream {
    typedef basic_streambuf<char,char_traits<char> > streambuf_type;
public:
    ostream_withassign() : ostream((streambuf_type*)NULL) { }
    virtual ~ostream_withassign() { }

    ostream_withassign&	operator=(ostream & i) { init(i.rdbuf()); return *this; }
    ostream_withassign&	operator=(streambuf * s) { init(s); return *this; }
};

typedef basic_iostream<char,std::char_traits<char> > iostream;

class iostream_withassign : public iostream {
    typedef basic_streambuf<char,char_traits<char> > streambuf_type;
public:
    iostream_withassign() : iostream((streambuf_type*)NULL) { }
    virtual ~iostream_withassign() { }
    iostream_withassign & operator=(ios & i) { init(i.rdbuf()); return *this; }
    iostream_withassign & operator=(streambuf * s) { init(s); return *this; }
};

extern istream_withassign cin;
extern ostream_withassign cout;
extern ostream_withassign cerr;
extern ostream_withassign clog;

}	/* namespace std */

#else /* KAI_NONSTD_IOSTREAM */

namespace std {

extern istream cin;
extern ostream cout;
extern ostream cerr;
extern ostream clog;

} // namespace std

#endif /* KAI_NONSTD_IOSTREAM */

#if KAI_WCHAR_T
namespace std {
extern wistream wcin;
extern wostream wcout;
extern wostream wcerr;
extern wostream wclog;
} // namespace std
#endif /* KAI_WCHAR_T */

#endif /* __KAI_IOSTREAM */