Add: Basic range check for replace() (#324)

OpenTTD · Oct 6, 2024 · b0406f4 · b0406f4
1 parent f00eefa
commit b0406f4
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/nml/ast/replace.py b/nml/ast/replace.py
@@ -54,6 +54,14 @@ def __init__(self, param_list, sprite_list, name, pos):
 
     def pre_process(self):
         self.start_id = self.start_id.reduce(global_constants.const_list)
+        if isinstance(self.start_id, expression.ConstantNumeric):
+            generic.check_range(
+                self.start_id.value,
+                0,
+                4895 - len(self.sprite_list),
+                "replace-block parameter 1 'start'",
+                self.start_id.pos,
+            )
 
     def debug_print(self, indentation):
         generic.print_dbg(indentation, "Replace sprites starting at")