source:
tests/coroutine/fmtLines.cfa
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[73abe95] | 1 | // |
[e06be49] | 2 | // Cforall Version 1.0.0 Copyright (C) 2017 University of Waterloo |
3 | // | |
4 | // The contents of this file are covered under the licence agreement in the | |
5 | // file "LICENCE" distributed with Cforall. | |
[73abe95] | 6 | // |
[a0cfa44] | 7 | // fmtLines.cc -- format characters into blocks of 4 and groups of 5 blocks per line |
[73abe95] | 8 | // |
[e06be49] | 9 | // Author : Peter A. Buhr |
10 | // Created On : Sun Sep 17 21:56:15 2017 | |
11 | // Last Modified By : Peter A. Buhr | |
[5ea5b28] | 12 | // Last Modified On : Sat Dec 22 18:27:00 2018 |
13 | // Update Count : 57 | |
[73abe95] | 14 | // |
[e06be49] | 15 | |
[73abe95] | 16 | #include <fstream.hfa> |
17 | #include <coroutine.hfa> | |
[e06be49] | 18 | |
19 | coroutine Format { | |
20 | char ch; // used for communication | |
21 | int g, b; // global because used in destructor | |
22 | }; | |
23 | ||
[971d9f2] | 24 | void main( Format & fmt ) with( fmt ) { |
[adb6b30f] | 25 | for () { // for as many characters |
[5ea5b28] | 26 | for ( g = 0; g < 5; g += 1 ) { // groups of 5 blocks |
27 | for ( b = 0; b < 4; b += 1 ) { // blocks of 4 characters | |
[adb6b30f] | 28 | for () { // for newline characters |
[e06be49] | 29 | suspend(); |
[5ea5b28] | 30 | if ( ch != '\n' ) break; // ignore newline |
[e06be49] | 31 | } // for |
[971d9f2] | 32 | sout | ch; // print character |
[e06be49] | 33 | } // for |
34 | sout | " "; // print block separator | |
35 | } // for | |
[200fcb3] | 36 | sout | nl; // print group separator |
[e06be49] | 37 | } // for |
38 | } // main | |
39 | ||
[a0cfa44] | 40 | void ?{}( Format & fmt ) { |
41 | resume( fmt ); // prime (start) coroutine | |
42 | } | |
43 | ||
44 | void ^?{}( Format & fmt ) with( fmt ) { | |
[200fcb3] | 45 | if ( g != 0 || b != 0 ) sout | nl; |
[a0cfa44] | 46 | } |
47 | ||
48 | void format( Format & fmt ) { | |
[6545adff] | 49 | resume( fmt ); |
[5dd3098] | 50 | } // format |
[e06be49] | 51 | |
52 | int main() { | |
[a0cfa44] | 53 | Format fmt; |
[200fcb3] | 54 | sout | nlOff; // turn off auto newline |
[e06be49] | 55 | |
[adb6b30f] | 56 | eof: for () { // read until end of file |
[a0cfa44] | 57 | sin | fmt.ch; // read one character |
58 | if ( eof( sin ) ) break eof; // eof ? | |
59 | format( fmt ); // push character for formatting | |
[e06be49] | 60 | } // for |
61 | } // main | |
62 | ||
63 | // Local Variables: // | |
64 | // tab-width: 4 // | |
65 | // compile-command: "cfa fmtLines.c" // | |
66 | // End: // |
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