| 1 | /* |
| 2 | Example of property-based slicing. |
| 3 | Try: spin -A wordcount |
| 4 | Requires Spin version 3.4 or later |
| 5 | */ |
| 6 | |
| 7 | chan STDIN; |
| 8 | int c, nl, nw, nc; |
| 9 | |
| 10 | init { |
| 11 | bool inword = false; |
| 12 | |
| 13 | do |
| 14 | :: STDIN?c -> |
| 15 | if |
| 16 | :: c == -1 -> break /* EOF */ |
| 17 | :: c == '\n' -> nc++; nl++ |
| 18 | :: else -> nc++ |
| 19 | fi; |
| 20 | if |
| 21 | :: c == ' ' || c == '\t' || c == '\n' -> |
| 22 | inword = false |
| 23 | :: else -> |
| 24 | if |
| 25 | :: !inword -> |
| 26 | nw++; inword = true |
| 27 | :: else /* do nothing */ |
| 28 | fi |
| 29 | fi |
| 30 | od; |
| 31 | assert(nc >= nl); |
| 32 | printf("%d\t%d\t%d\n", nl, nw, nc) |
| 33 | } |