as: fix empty param list

nop was failing
2022-05-07 11:34:35 -07:00 · 2022-05-07 11:34:35 -07:00 · f27edd36d7
commit f27edd36d7
parent 1a88bebf82
1 changed files with 2 additions and 0 deletions
--- a/tools/as.py
+++ b/tools/as.py
@ -37,6 +37,8 @@ class AsTransformer(lark.Transformer):

    def statement(self, s):
        opcode, *params = s
+        if params[0] is None:
+            params = []
        addr = self.addr
        self.addr += 2
        return ('OP', addr, opcode, *params)