| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #ifndef LYTHON_UTILITIES_GUARD_HEADER | ||
| 2 | #define LYTHON_UTILITIES_GUARD_HEADER | ||
| 3 | |||
| 4 | namespace lython { | ||
| 5 | // Execute function upon destruction | ||
| 6 | template <typename Exit> | ||
| 7 | struct Guard { | ||
| 8 | Guard(Exit fun): on_exit(fun) {} | ||
| 9 | |||
| 10 | ~Guard() { on_exit(); } | ||
| 11 | |||
| 12 | Exit on_exit; | ||
| 13 | }; | ||
| 14 | |||
| 15 | template <typename Exit> | ||
| 16 | Guard<Exit> guard(Exit fun) { | ||
| 17 | return Guard(fun); | ||
| 18 | } | ||
| 19 | |||
| 20 | template <typename T, typename U> | ||
| 21 | struct PopGuard { | ||
| 22 | PopGuard(T& array, U const& v): array(array), oldsize(array.size()) { array.push_back(v); } | ||
| 23 | |||
| 24 | PopGuard(T& array): array(array), oldsize(array.size()) {} | ||
| 25 | |||
| 26 | ~PopGuard() { array.pop_back(); } | ||
| 27 | |||
| 28 | U const& last(int offset, U const& default_value) const { | ||
| 29 |
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127 | if (oldsize >= offset) { |
| 30 | 8 | return array[oldsize - offset]; | |
| 31 | } | ||
| 32 | 119 | return default_value; | |
| 33 | } | ||
| 34 | |||
| 35 | T& array; | ||
| 36 | std::size_t oldsize; | ||
| 37 | }; | ||
| 38 | } // namespace lython | ||
| 39 | |||
| 40 | #endif | ||
| 41 |