switches without nondefaults results in syntax error on Python

[ejeandel]

The following codes produces a syntax error on python:

meta:
  id: ops
  endian: le
seq:      
  - id: opcode
    type: u1
  - id: arguments
    type:
      switch-on: opcode
      cases:
        _: u4

the produced code is:

    def _read(self):
        self.opcode = self._io.read_u1()
        _on = self.opcode
        else:
            self.arguments = self._io.read_u4le()

hence a "else" with no "if".
Maybe this particular pattern should not be allowed ?

[GreyCat]

Good catch, thanks! I don't see any problem with allowing that, so I'd rather fix the codegen.

[generalmimon]

Fixed in kaitai-io/kaitai_struct_compiler@5b1f73b (Lua, Perl & Python) and kaitai-io/kaitai_struct_compiler@5f9f400 (Ruby)