| 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2017 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // fmtLines.cc --
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| 8 | //
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| 9 | // Author : Peter A. Buhr
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| 10 | // Created On : Sun Sep 17 21:56:15 2017
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| 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Fri Mar 22 13:41:03 2019
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| 13 | // Update Count : 33
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| 14 | //
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| 15 |
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| 16 | #include <fstream.hfa>
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| 17 | #include <coroutine.hfa>
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| 18 |
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| 19 | coroutine Format {
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| 20 | char ch; // used for communication
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| 21 | int g, b; // global because used in destructor
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| 22 | };
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| 23 |
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| 24 | void ?{}( Format & fmt ) {
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| 25 | resume( fmt ); // start coroutine
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| 26 | }
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| 27 |
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| 28 | void ^?{}( Format & fmt ) {
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| 29 | if ( fmt.g != 0 || fmt.b != 0 ) sout | nl;
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| 30 | }
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| 31 |
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| 32 | void main( Format & fmt ) {
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| 33 | for ( ;; ) { // for as many characters
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| 34 | for ( fmt.g = 0; fmt.g < 5; fmt.g += 1 ) { // groups of 5 blocks
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| 35 | for ( fmt.b = 0; fmt.b < 4; fmt.b += 1 ) { // blocks of 4 characters
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| 36 | for ( ;; ) { // for newline characters
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| 37 | suspend;
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| 38 | if ( fmt.ch != '\n' ) break; // ignore newline
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| 39 | } // for
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| 40 | sout | fmt.ch; // print character
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| 41 | } // for
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| 42 | sout | " "; // print block separator
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| 43 | } // for
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| 44 | sout | nl; // print group separator
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| 45 | } // for
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| 46 | } // main
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| 47 |
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| 48 | void prt( Format & fmt, char ch ) {
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| 49 | fmt.ch = ch;
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| 50 | resume( fmt );
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| 51 | } // prt
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| 52 |
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| 53 | int main() {
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| 54 | Format fmt;
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| 55 | char ch;
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| 56 |
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| 57 | for ( ;; ) {
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| 58 | sin | ch; // read one character
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| 59 | if ( eof( sin ) ) break; // eof ?
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| 60 | prt( fmt, ch );
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| 61 | } // for
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| 62 | } // main
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| 63 |
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| 64 | // Local Variables: //
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| 65 | // tab-width: 4 //
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| 66 | // compile-command: "cfa fmtLines.cfa" //
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| 67 | // End: //
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