//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// iostream.hfa --
//
// Author           : Peter A. Buhr
// Created On       : Wed May 27 17:56:53 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Sun Oct 13 10:49:40 2024
// Update Count     : 765
//

#pragma once

#include "iterator.hfa"
#include "Exception.hfa"

// *********************************** ostream ***********************************

forall( ostype & )
trait basic_ostream {
	// private
	bool sepPrt$( ostype & );							// get separator state (on/off)
	void sepReset$( ostype & );							// set separator state to default state
	void sepReset$( ostype &, bool );					// set separator and default state
	const char * sepGetCur$( ostype & );				// get current separator string
	void sepSetCur$( ostype &, const char [] );			// set current separator string
	bool getNL$( ostype & );							// get newline
	bool setNL$( ostype &, bool );						// set newline
	bool getANL$( ostype & );							// get auto newline (on/off)
	bool setANL$( ostype &, bool );						// set auto newline (on/off), and return previous state
	bool getPrt$( ostype & );							// get fmt called in output cascade
	bool setPrt$( ostype &, bool );						// set fmt called in output cascade
	// public
	void nlOn( ostype & );								// turn auto-newline state on
	void nlOff( ostype & );								// turn auto-newline state off

	void sep( ostype & );								// turn separator state on
	void nosep( ostype & );								// turn separator state off
	bool sepOn( ostype & );								// set default state to on, and return previous state
	bool sepOff( ostype & );							// set default state to off, and return previous state
	const char * sepGet( ostype & );					// get separator string
	void sepSet( ostype &, const char [] );				// set separator to string (15 character maximum)
	const char * sepGetTuple( ostype & );				// get tuple separator string
	void sepSetTuple( ostype &, const char [] );		// set tuple separator to string (15 character maximum)

	void ends( ostype & );								// end of output statement
	int fmt( ostype &, const char format[], ... ) __attribute__(( format(printf, 2, 3) ));
}; // basic_ostream

forall( ostype & | basic_ostream( ostype ) )
trait ostream {
	bool fail( ostype & );								// operation failed?
	void clear( ostype & );
	int flush( ostype & );
	void open( ostype &, const char name[], const char mode[] );
	void close( ostype & );
	ostype & write( ostype &, const char [], size_t );
}; // ostream

// forall( T )
// trait writeable {
// 	forall( ostype & | ostream( ostype ) ) ostype & ?|?( ostype &, T );
// }; // writeable

forall( T, ostype & | ostream( ostype ) )
trait writeable {
	ostype & ?|?( ostype &, T );
}; // writeable

// implement writable for intrinsic types

#define OSTYPE_VOID( T ) void ?|?( ostype &, T )
#define OSTYPE_VOID_IMPL( os, T ) \
	void ?|?( ostype & os, T t ) { \
		(ostype &)(os | t); ends( os ); \
	} // ?|?

forall( ostype & | basic_ostream( ostype ) ) {
	ostype & ?|?( ostype &, bool );
	OSTYPE_VOID( bool );

	ostype & ?|?( ostype &, char );
	OSTYPE_VOID( char );
	ostype & ?|?( ostype &, signed char );
	OSTYPE_VOID( signed char );
	ostype & ?|?( ostype &, unsigned char );
	OSTYPE_VOID( unsigned char );

	ostype & ?|?( ostype &, short int );
	OSTYPE_VOID( short int );
	ostype & ?|?( ostype &, unsigned short int );
	OSTYPE_VOID( unsigned short int );
	ostype & ?|?( ostype &, int );
	OSTYPE_VOID( int );
	ostype & ?|?( ostype &, unsigned int );
	OSTYPE_VOID( unsigned int );
	ostype & ?|?( ostype &, long int );
	OSTYPE_VOID( long int );
	ostype & ?|?( ostype &, long long int );
	OSTYPE_VOID( long long int );
	ostype & ?|?( ostype &, unsigned long int );
	OSTYPE_VOID( unsigned long int );
	ostype & ?|?( ostype &, unsigned long long int );
	OSTYPE_VOID( unsigned long long int );
	#if defined( __SIZEOF_INT128__ )
	ostype & ?|?( ostype &, int128 );
	OSTYPE_VOID( int128 );
	ostype & ?|?( ostype &, unsigned int128 );
	OSTYPE_VOID( unsigned int128 );
	#endif // __SIZEOF_INT128__

	ostype & ?|?( ostype &, float );
	OSTYPE_VOID( float );
	ostype & ?|?( ostype &, double );
	OSTYPE_VOID( double );
	ostype & ?|?( ostype &, long double );
	OSTYPE_VOID( long double );

	ostype & ?|?( ostype &, float _Complex );
	OSTYPE_VOID( float _Complex );
	ostype & ?|?( ostype &, double _Complex );
	OSTYPE_VOID( double _Complex );
	ostype & ?|?( ostype &, long double _Complex );
	OSTYPE_VOID( long double _Complex );

	ostype & ?|?( ostype &, const char [] );
	OSTYPE_VOID( const char [] );
	// ostype & ?|?( ostype &, const char16_t [] );
	#if ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 ) // char32_t == wchar_t => ambiguous
	// ostype & ?|?( ostype &, const char32_t [] );
	#endif // ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 )
	// ostype & ?|?( ostype &, const wchar_t [] );
	ostype & ?|?( ostype &, const void * );
	OSTYPE_VOID( const void * );

	// FIX-ME: does not work so using macros
	// forall( T | { ostype & ?|?( ostype &, T ); } )
	// void ?|?( ostype & os, T );

	// manipulators
	ostype & ?|?( ostype &, ostype & (*)( ostype & ) );
	OSTYPE_VOID( ostype & (*)( ostype & ) );

	ostype & nl( ostype & );
	ostype & nonl( ostype & );
	ostype & nlOn( ostype & );
	ostype & nlOff( ostype & );

	ostype & sepVal( ostype & );
	ostype & sepTupleVal( ostype & );
	ostype & sep( ostype & );
	ostype & nosep( ostype & );
	ostype & sepOn( ostype & );
	ostype & sepOff( ostype & );
} // distribution

// tuples
forall( ostype &, T, List ... | writeable( T, ostype ) | { ostype & ?|?( ostype &, List ); } ) {
	ostype & ?|?( ostype & os, T arg, List rest );
	void ?|?( ostype & os, T arg, List rest );
} // distribution

// writes the range [begin, end) to the given stream
forall( ostype &, elt_type | writeable( elt_type, ostype ), iterator_type | iterator( iterator_type, elt_type ) ) {
	void write( iterator_type begin, iterator_type end, ostype & os );
	void write_reverse( iterator_type begin, iterator_type end, ostype & os );
} // distribution

// *********************************** manipulators ***********************************

struct _Ostream_Flags {
	unsigned char eng:1;								// engineering notation
	unsigned char neg:1;								// val is negative
	unsigned char pc:1;									// precision specified
	unsigned char left:1;								// left justify
	unsigned char nobsdp:1;								// base prefix / decimal point
	unsigned char sign:1;								// plus / minus sign
	unsigned char pad0:1;								// zero pad
};

forall( T )
struct _Ostream_Manip {
	T val;												// polymorphic base-type
	int wd, pc;											// width, precision: signed for computations
	char base;											// numeric base / floating-point style
	union {
		unsigned char all;
		_Ostream_Flags flags;
	};
}; // _Ostream_Manip

// *********************************** integral ***********************************

#define INTEGRAL_FMT_DECL( T, CODE ) \
static inline { \
	_Ostream_Manip(T) bin( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; } \
	_Ostream_Manip(T) oct( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; } \
	_Ostream_Manip(T) hex( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; } \
	_Ostream_Manip(T) wd( unsigned int wd, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = 0, .base = CODE, { .all = 0 } }; } \
	_Ostream_Manip(T) wd( unsigned int wd, unsigned int pc, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = pc, .base = CODE, { .flags.pc = true } }; } \
	_Ostream_Manip(T) & wd( unsigned int wd, _Ostream_Manip(T) & fmt ) { fmt.wd = wd; return fmt; } \
	_Ostream_Manip(T) & wd( unsigned int wd, unsigned int pc, _Ostream_Manip(T) & fmt ) { fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; } \
	_Ostream_Manip(T) & left( _Ostream_Manip(T) & fmt ) { fmt.flags.left = true; return fmt; } \
	_Ostream_Manip(T) & upcase( _Ostream_Manip(T) & fmt ) { if ( fmt.base == 'x' || fmt.base == 'b' ) fmt.base -= 32; /* upper case */ return fmt; } \
	_Ostream_Manip(T) & nobase( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
	_Ostream_Manip(T) & pad0( _Ostream_Manip(T) & fmt ) { fmt.flags.pad0 = true; return fmt; } \
	_Ostream_Manip(T) sign( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = CODE, { .flags.sign = true } }; } \
	_Ostream_Manip(T) & sign( _Ostream_Manip(T) & fmt ) { fmt.flags.sign = true; return fmt; } \
} /* distribution */ \
forall( ostype & | basic_ostream( ostype ) ) { \
	ostype & ?|?( ostype & os, _Ostream_Manip(T) f ); \
	OSTYPE_VOID( _Ostream_Manip(T) ); \
} // ?|?

INTEGRAL_FMT_DECL( signed char, 'd' )
INTEGRAL_FMT_DECL( unsigned char, 'u' )
INTEGRAL_FMT_DECL( signed short int, 'd' )
INTEGRAL_FMT_DECL( unsigned short int, 'u' )
INTEGRAL_FMT_DECL( signed int, 'd' )
INTEGRAL_FMT_DECL( unsigned int, 'u' )
INTEGRAL_FMT_DECL( signed long int, 'd' )
INTEGRAL_FMT_DECL( unsigned long int, 'u' )
INTEGRAL_FMT_DECL( signed long long int, 'd' )
INTEGRAL_FMT_DECL( unsigned long long int, 'u' )
#if defined( __SIZEOF_INT128__ )
INTEGRAL_FMT_DECL( int128, 'd' )
INTEGRAL_FMT_DECL( unsigned int128, 'u' )
#endif // __SIZEOF_INT128__

// *********************************** floating point ***********************************

// Default suffix for values with no fraction is "."
#define FLOATING_POINT_FMT_DECL( T ) \
static inline { \
	_Ostream_Manip(T) hex( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'a', { .all = 0 } }; } \
	_Ostream_Manip(T) sci( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'e', { .all = 0 } }; } \
	_Ostream_Manip(T) eng( T val ) { return (_Ostream_Manip(T))@{ .val = val, 1, -1, .base = 'g', { .flags.eng = true } }; } \
	_Ostream_Manip(T) wd( unsigned int wd, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = 0, .base = 'g', { .all = 0 } }; } \
	_Ostream_Manip(T) wd( unsigned int wd, unsigned int pc, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = pc, .base = 'f', { .flags.pc = true } }; } \
	_Ostream_Manip(T) ws( unsigned int wd, unsigned int pc, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = pc, .base = 'g', { .flags.pc = true } }; } \
	_Ostream_Manip(T) & wd( unsigned int wd, _Ostream_Manip(T) & fmt ) { if ( fmt.flags.eng ) fmt.base = 'f'; fmt.wd = wd; return fmt; } \
	_Ostream_Manip(T) & wd( unsigned int wd, unsigned int pc, _Ostream_Manip(T) & fmt ) { \
		if ( fmt.flags.eng ) fmt.base = 'f'; fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; } \
	_Ostream_Manip(T) & ws( unsigned int wd, unsigned int pc, _Ostream_Manip(T) & fmt ) { fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; } \
	_Ostream_Manip(T) & left( _Ostream_Manip(T) & fmt ) { fmt.flags.left = true; return fmt; } \
	_Ostream_Manip(T) upcase( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'G', { .all = 0 } }; } \
	_Ostream_Manip(T) & upcase( _Ostream_Manip(T) & fmt ) { fmt.base -= 32; /* upper case */ return fmt; } \
	_Ostream_Manip(T) & pad0( _Ostream_Manip(T) & fmt ) { fmt.flags.pad0 = true; return fmt; } \
	_Ostream_Manip(T) sign( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.sign = true } }; } \
	_Ostream_Manip(T) & sign( _Ostream_Manip(T) & fmt ) { fmt.flags.sign = true; return fmt; } \
	_Ostream_Manip(T) nodp( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.nobsdp = true } }; } \
	_Ostream_Manip(T) & nodp( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
	_Ostream_Manip(T) unit( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.nobsdp = true } }; } \
	_Ostream_Manip(T) & unit( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
} /* distribution */ \
forall( ostype & | basic_ostream( ostype ) ) { \
	ostype & ?|?( ostype & os, _Ostream_Manip(T) f ); \
	OSTYPE_VOID( _Ostream_Manip(T) ); \
} // ?|?

FLOATING_POINT_FMT_DECL( double )
FLOATING_POINT_FMT_DECL( long double )

// *********************************** character ***********************************

static inline {
	_Ostream_Manip(char) bin( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; }
	_Ostream_Manip(char) oct( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; }
	_Ostream_Manip(char) hex( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; }
	_Ostream_Manip(char) wd( unsigned int wd, char c ) { return (_Ostream_Manip(char))@{ c, wd, 0, .base = 'c', { .all = 0 } }; }
	_Ostream_Manip(char) & wd( unsigned int wd, _Ostream_Manip(char) & fmt ) { fmt.wd = wd; return fmt; }
	_Ostream_Manip(char) & left( _Ostream_Manip(char) & fmt ) { fmt.flags.left = true; return fmt; }
	_Ostream_Manip(char) & upcase( _Ostream_Manip(char) & fmt ) { if ( fmt.base == 'x' || fmt.base == 'b' ) fmt.base -= 32; /* upper case */ return fmt; }
	_Ostream_Manip(char) & nobase( _Ostream_Manip(char) & fmt ) { fmt.flags.nobsdp = true; return fmt; }
} // distribution
forall( ostype & | basic_ostream( ostype ) ) {
	ostype & ?|?( ostype & os, _Ostream_Manip(char) f );
	OSTYPE_VOID( _Ostream_Manip(char) ); \
} // ?|?

// *********************************** C string ***********************************

static inline {
	_Ostream_Manip(const char *) bin( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; }
	_Ostream_Manip(const char *) oct( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; }
	_Ostream_Manip(const char *) hex( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; }
	_Ostream_Manip(const char *) wd( unsigned int wd, const char s[] ) { return (_Ostream_Manip(const char *))@{ s, wd, 0, .base = 's', { .all = 0 } }; }
	_Ostream_Manip(const char *) wd( unsigned int wd, unsigned int pc, const char s[] ) { return (_Ostream_Manip(const char *))@{ s, .wd = wd, .pc = pc, .base = 's', { .flags.pc = true } }; }
	_Ostream_Manip(const char *) & wd( unsigned int wd, _Ostream_Manip(const char *) & fmt ) { fmt.wd = wd; return fmt; }
	_Ostream_Manip(const char *) & wd( unsigned int wd, unsigned int pc, _Ostream_Manip(const char *) & fmt ) { fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; }
	_Ostream_Manip(const char *) & left( _Ostream_Manip(const char *) & fmt ) { fmt.flags.left = true; return fmt; }
	_Ostream_Manip(const char *) & nobase( _Ostream_Manip(const char *) & fmt ) { fmt.flags.nobsdp = true; return fmt; }
} // distribution
forall( ostype & | basic_ostream( ostype ) ) {
	ostype & ?|?( ostype & os, _Ostream_Manip(const char *) f );
	OSTYPE_VOID( _Ostream_Manip(const char *) ); \
} // ?|?

// *********************************** istream ***********************************

forall( istype & )
trait basic_istream {
	// private
	bool getANL$( istype & );							// get scan newline (on/off)
	bool setANL$( istype &, bool );						// set scan newline (on/off)
	// public
	void nlOn( istype & );								// read newline
	void nlOff( istype & );								// scan newline
	int fmt( istype &, const char format[], ... ) __attribute__(( format(scanf, 2, 3) ));
	istype & ungetc( char, istype & );
	bool eof( istype & );
	void clear( istype & );
}; // basic_istream

forall( istype & | basic_istream( istype ) )
trait istream {
	bool fail( istype & );
	void open( istype & is, const char name[], const char mode[] );
	void open( istype & is, const char name[] );
	void close( istype & is );
	istype & read( istype &, char [], size_t );
}; // istream

forall( T )
trait readable {
	forall( istype & | istream( istype ) ) istype & ?|?( istype &, T );
}; // readable

forall( istype & | basic_istream( istype ) ) {
	istype & ?|?( istype &, bool & );

	istype & ?|?( istype &, char & );
	istype & ?|?( istype &, signed char & );
	istype & ?|?( istype &, unsigned char & );

	istype & ?|?( istype &, short int & );
	istype & ?|?( istype &, unsigned short int & );
	istype & ?|?( istype &, int & );
	istype & ?|?( istype &, unsigned int & );
	istype & ?|?( istype &, long int & );
	istype & ?|?( istype &, unsigned long int & );
	istype & ?|?( istype &, long long int & );
	istype & ?|?( istype &, unsigned long long int & );
	#if defined( __SIZEOF_INT128__ )
	istype & ?|?( istype &, int128 & );
	istype & ?|?( istype &, unsigned int128 & );
	#endif // __SIZEOF_INT128__

	istype & ?|?( istype &, float & );
	istype & ?|?( istype &, double & );
	istype & ?|?( istype &, long double & );

	istype & ?|?( istype &, float _Complex & );
	istype & ?|?( istype &, double _Complex & );
	istype & ?|?( istype &, long double _Complex & );

	// This is too restrictive as it prevents building a format in a string and using that format.
	// inline istype & ?|?( istype &, char [] ) {			// possible error, too restrictive to change
	// 	_Static_assert( false, "reading a character array without a maximum length is unsafe. Use input manipulator \"wdi( N, s )\", where \"char s[N]\" or fmt( s )." );
	// }
	istype & ?|?( istype &, const char [] );			// match text

	// manipulators
	istype & ?|?( istype &, istype & (*)( istype & ) );
	istype & nl( istype & is );
	istype & nlOn( istype & );
	istype & nlOff( istype & );
} // distribution

// *********************************** exceptions ***********************************

ExceptionDecl( end_of_file );							// read encounters end of file
ExceptionDecl( missing_data );							// read finds no appropriate data
ExceptionDecl( cstring_length );						// character string size exceeded
ExceptionDecl( data_range );							// value too large for numerical type

// *********************************** manipulators ***********************************

// skip does not compose with other C string manipulators.
struct _Istream_Cskip {
	const char * scanset;
	unsigned wd;										// scan width
}; // _Istream_Cskip

static inline {
	_Istream_Cskip skip( const char scanset[] ) { return (_Istream_Cskip)@{ .scanset = scanset, .wd = 0 }; }
	_Istream_Cskip skip( unsigned int wd ) { return (_Istream_Cskip)@{ .scanset = 0p, .wd = wd }; }
} // distribution

struct _Istream_str_base {
	union {
		const char * scanset;
		char delimiters[3];								// [0] => left, [1] => right
	};
	int wd;												// width
	union {
		unsigned char all;
		struct {
			unsigned char ignore:1;						// do not change input argument
			unsigned char inex:1;						// include/exclude characters in scanset
			unsigned char delimiter:1;					// delimit character(s)
			unsigned char rwd:1;						// read width
		} flags;
	};
}; // _Istream_str_base

struct _Istream_Cwidth {
	char * s;
	inline _Istream_str_base;
}; // _Istream_Cwidth

// Restrict nesting of input manipulators to those combinations that make sense.

struct _Istream_Cquoted {
	_Istream_Cwidth cstr;
}; // _Istream_Cquoted

struct _Istream_Cstr {
	_Istream_Cwidth cstr;
}; // _Istream_Cstr

static inline {
	// width must include room for null terminator, (gcc) scanf does not allow a 0 width => wd > 1 (1 char and null) and rd > 0 (1 char);
	_Istream_Cwidth wdi( unsigned int wd, char s[] ) {
		if ( wd <= 1 ) throwResume ExceptionInst( cstring_length ); // minimum 1 character and null terminator
		return (_Istream_Cwidth)@{ .s = s, { {.scanset = 0p}, .wd = wd, {.all = 0} } };
	}
	_Istream_Cwidth wdi( unsigned int wd, unsigned int rwd, char s[] ) {
		if ( wd <= 1 || wd <= rwd ) throwResume ExceptionInst( cstring_length ); // minimum 1 character, null terminator, plus subset
		return (_Istream_Cwidth)@{ .s = s, { {.scanset = 0p}, .wd = rwd, {.flags.rwd = true} } };
	}
	_Istream_Cstr & getline( _Istream_Cwidth & f, const char delimiter = '\n' ) {
		f.delimiters[0] = delimiter; f.delimiters[1] = '\0'; f.flags.delimiter = true; return (_Istream_Cstr &)f;
	}
	_Istream_Cquoted quoted( char & ch, const char Ldelimiter = '\'', const char Rdelimiter = '\0' ) {
		return (_Istream_Cquoted)@{ { .s = &ch, { {.delimiters = { Ldelimiter, Rdelimiter, '\1' }}, .wd = 1, {.flags.rwd = true} } } };
	}
	_Istream_Cquoted & quoted( _Istream_Cwidth & f, const char Ldelimiter = '"', const char Rdelimiter = '\0' ) {
		f.delimiters[0] = Ldelimiter;  f.delimiters[1] = Rdelimiter;  f.delimiters[2] = '\0';
		return (_Istream_Cquoted &)f;
	}
	_Istream_Cstr & incl( const char scanset[], _Istream_Cwidth & f ) { f.scanset = scanset; f.flags.inex = false; return (_Istream_Cstr &)f; }
	_Istream_Cstr & excl( const char scanset[], _Istream_Cwidth & f ) { f.scanset = scanset; f.flags.inex = true; return (_Istream_Cstr &)f; }
	_Istream_Cstr ignore( const char s[] ) { return (_Istream_Cstr)@{ { .s = (char *)s, { {.scanset = 0p}, .wd = -1, {.flags.ignore = true} } } }; }
	_Istream_Cstr & ignore( _Istream_Cwidth & f ) { f.flags.ignore = true; return (_Istream_Cstr &)f; }
	_Istream_Cquoted & ignore( _Istream_Cquoted & f ) { f.cstr.flags.ignore = true; return (_Istream_Cquoted &)f; }
	_Istream_Cstr & ignore( _Istream_Cstr & f ) { f.cstr.flags.ignore = true; return (_Istream_Cstr &)f; }
} // distribution

forall( istype & | basic_istream( istype ) ) {
	istype & ?|?( istype & is, _Istream_Cskip f );
	istype & ?|?( istype & is, _Istream_Cquoted f );
	istype & ?|?( istype & is, _Istream_Cstr f );
	static inline istype & ?|?( istype & is, _Istream_Cwidth f ) { return is | *(_Istream_Cstr *)&f; }
} // distribution

forall( T & | sized( T ) )
struct _Istream_Manip {
	T & val;											// polymorphic base-type
	int wd;												// width
	bool ignore;										// do not change input argument
}; // _Istream_Manip

#define INPUT_FMT_DECL( T ) \
static inline { \
	_Istream_Manip(T) wdi( unsigned int wd, T & val ) { return (_Istream_Manip(T))@{ .val = val, .wd = wd, .ignore = false }; } \
	_Istream_Manip(T) ignore( const T & val ) { return (_Istream_Manip(T))@{ .val = (T &)val, .wd = -1, .ignore = true }; } \
	_Istream_Manip(T) & ignore( _Istream_Manip(T) & fmt ) { fmt.ignore = true; return fmt; } \
} /* distribution */ \
forall( istype & | basic_istream( istype ) ) { \
	istype & ?|?( istype & is, _Istream_Manip(T) f ); \
} // ?|?

INPUT_FMT_DECL( char )
INPUT_FMT_DECL( signed char )
INPUT_FMT_DECL( unsigned char )
INPUT_FMT_DECL( signed short int )
INPUT_FMT_DECL( unsigned short int )
INPUT_FMT_DECL( signed int )
INPUT_FMT_DECL( unsigned int )
INPUT_FMT_DECL( signed long int )
INPUT_FMT_DECL( unsigned long int )
INPUT_FMT_DECL( signed long long int )
INPUT_FMT_DECL( unsigned long long int )

INPUT_FMT_DECL( float )
INPUT_FMT_DECL( double )
INPUT_FMT_DECL( long double )

INPUT_FMT_DECL( float _Complex )
INPUT_FMT_DECL( double _Complex )
INPUT_FMT_DECL( long double _Complex )

// *********************************** time ***********************************

#include <time_t.hfa>									// Duration (constructors) / Time (constructors)

forall( ostype & | ostream( ostype ) ) {
	ostype & ?|?( ostype & os, Duration dur );
	OSTYPE_VOID( Duration );
	ostype & ?|?( ostype & os, Time time );
	OSTYPE_VOID( Time );
} // distribution

// Local Variables: //
// tab-width: 4 //
// End: //