source: doc/papers/concurrency/examples/Format.js@ 9b55aa3

function * Format() {
        var g, b;
        fini: while ( true ) {
                for ( g = 0; g < 5; g += 1 ) {                                  // groups of 5 blocks
                        for ( b = 0; b < 4; b += 1 ) {                          // blocks of 4 characters
                                while ( true ) {
                                        ch = (yield)                                            // receive from send
                                        if ( ch == '\0' ) break fini;
                                        if ( '\n' != ch ) break
                                }
                                process.stdout.write( ch )                              // receive from send
                        }
                        process.stdout.write( '  ' )                            // block separator
                }
                process.stdout.write( '\n' )                                    // group separator
        }
        if ( g != 0 || b != 0 ) process.stdout.write( '\n' )
}

var input = "abcdefghijklmnop\nqrstuvwx\nyzxxxxxxxxxxxxx"

fmt = Format()
fmt.next()                                                                                              // prime generator
for ( var i = 0; i < input.length; i += 1 ) {
        fmt.next( input[i] );                                                           // send to yield
}
fmt.next( '\0' );                                                                               // EOF

// Local Variables: //
// comment-column: 56 //
// tab-width: 4 //
// compile-command: "node Format.js" //
// End: //