data: fix `sizeof()` for Data

2021-08-09 06:44:41 +02:00 · 2021-08-09 06:44:41 +02:00 · 3df63b9bf5
parent a2c7fb7d26
commit 3df63b9bf5
1 changed files with 2 additions and 0 deletions
--- a/sx/types/data.py
+++ b/sx/types/data.py
@ -49,6 +49,8 @@ class Data(Type[bytes]):
        return bytes(size)

    def sizeof(self, context: Context, value: O[bytes]) -> O[Pos]:
+        if value is not None:
+            return len(value)
        return context.peek(self.size)

    def __str__(self) -> str: