source: src/examples/iostream.c @ b18b0b5

//
// 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.c -- 
//
// Author           : Richard C. Bilson
// Created On       : Wed May 27 17:56:53 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Mon Dec  7 23:08:02 2015
// Update Count     : 24
//

#include "iostream.h"
extern "C" {
#include <stdio.h>
#include <string.h>                                                                             // strlen
}

forall( dtype ostype | ostream( ostype ) )
ostype * ?|?( ostype *os, char c ) {
        return write( os, &c, 1 );
} // ?|?

forall( dtype ostype | ostream( ostype ) )
ostype * ?|?( ostype *os, int i ) {
        char buffer[32];                                                                        // larger than the largest integer
        sprintf( buffer, "%d", i );
        return write( os, buffer, strlen( buffer ) );
} // ?|?

forall( dtype ostype | ostream( ostype ) )
ostype * ?|?( ostype *os, double d ) {
        char buffer[32];                                                                        // larger than the largest double
        sprintf( buffer, "%g", d );
        return write( os, buffer, strlen( buffer ) );
} // ?|?

forall( dtype ostype | ostream( ostype ) )
ostype * ?|?( ostype *os, const char *cp ) {
        return write( os, cp, strlen( cp ) );
} // ?|?

forall( dtype ostype | ostream( ostype ) )
ostype * ?|?( ostype *os, const void *p ) {
        char buffer[32];                                                                        // larger than the largest pointer
        sprintf( buffer, "%p", p );
        return write( os, buffer, strlen( buffer ) );
} // ?|?


forall( dtype ostype, dtype retostype | ostream( ostype ) | ostream( retostype ) ) 
retostype * ?|?( ostype *os, retostype * (*manip)(ostype*) ) {
  return manip(os);
}

forall( dtype ostype | ostream( ostype ) ) 
ostype * endl( ostype * os ) {
  os | "\n";
  // flush
  return os;
} // endl

forall( type elt_type | writeable( elt_type ),
                type iterator_type | iterator( iterator_type, elt_type ),
                dtype os_type | ostream( os_type ) )
void write( iterator_type begin, iterator_type end, os_type *os ) {
        void print( elt_type i ) {
                os | i | ' ';
        }
        for_each( begin, end, print );
} // ?|?

forall( type elt_type | writeable( elt_type ),
                type iterator_type | iterator( iterator_type, elt_type ),
                dtype os_type | ostream( os_type ) )
void write_reverse( iterator_type begin, iterator_type end, os_type *os ) {
        void print( elt_type i ) { os | i | ' '; }
        for_each_reverse( begin, end, print );
} // ?|?


forall( dtype istype | istream( istype ) )
istype * ?|?( istype *is, char *cp ) {
        return read( is, cp, 1 );
} // ?|?

forall( dtype istype | istream( istype ) )
istype * ?|?( istype *is, int *ip ) {
        char cur;
  
        // skip some whitespace
        do {
                is | &cur;
                if ( fail( is ) || eof( is ) ) return is;
        } while ( !( cur >= '0' && cur <= '9' ) );
  
        // accumulate digits
        *ip = 0;
        while ( cur >= '0' && cur <= '9' ) {
                *ip = *ip * 10 + ( cur - '0' );
                is | &cur;
                if ( fail( is ) || eof( is ) ) return is;
        }
  
        unread( is, cur );
        return is;
} // ?|?

// Local Variables: //
// tab-width: 4 //
// compile-command: "cfa iostream.c" //
// End: //