add some benchmarking

1 files changed, 4 insertions, 3 deletions

diff --git a/src/forth/interp.rs b/src/forth/interp.rs
index e41f0d9..512c022 100644
--- a/src/forth/interp.rs
+++ b/src/forth/interp.rs
@@ -216,9 +216,10 @@ impl Interp {
         Ok(self.ip.offset < self.wordlist.0[self.ip.word].len())
     }
 
-    pub fn run(&mut self) -> Result<(), RuntimeError> {
-        while self.tick()? {}
-        Ok(())
+    pub fn run(&mut self) -> Result<usize, RuntimeError> {
+        let mut count = 0;
+        while self.tick()? { count += 1 }
+        Ok(count)
     }
 }