forbid reserved words 'co_consts', 'co_names'

python · iritkatriel · Jun 13, 2023 · Jun 7, 2023 · Jun 8, 2023 · Jun 8, 2023
commit 0d3dc8e67759159f04a29ec9806f5a0d47f5323b
@@ -34,6 +34,11 @@
 UNUSED = "unused"
 BITS_PER_CODE_UNIT = 16

+RESERVED_WORDS = {
+    "co_consts" : "Use FRAME_CO_CONSTS.",
+    "co_names": "Use FRAME_CO_NAMES.",
+}
+
 arg_parser = argparse.ArgumentParser(
    description="Generate the code for the interpreter switch.",
    formatter_class=argparse.ArgumentDefaultsHelpFormatter,
@@ -605,6 +610,9 @@ def parse_file(self, filename: str, instrs_idx: dict[str, int]) -> None:
        thing: parser.InstDef | parser.Macro | parser.Family | None
        thing_first_token = psr.peek()
        while thing := psr.definition():
+            if ws := [w for w in RESERVED_WORDS if variable_used(thing, w)]:
+                self.error(f"'{ws[0]}' is a reserved word. {RESERVED_WORDS[ws[0]]}", thing)
+
            match thing:
                case parser.InstDef(name=name):
                    if name in self.instrs: