diff options
Diffstat (limited to 'src/guard.rs')
-rw-r--r-- | src/guard.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/guard.rs b/src/guard.rs new file mode 100644 index 0000000..75a28aa --- /dev/null +++ b/src/guard.rs @@ -0,0 +1,14 @@ +pub fn guard<T> (finally: ~fn (), body: &fn () -> T) -> T { + let _guard = Guard { finally: finally }; + body() +} + +struct Guard { + priv finally: ~fn (), +} + +impl Drop for Guard { + fn finalize (&self) { + (self.finally)(); + } +} |