no longer works with Python 3.12

[camthehaxman]

When running diff.py with Python 3.12.1, I get a number of warnings, and it is no longer able to correctly parse the map file.

/diff.py CARDRenameAsync
/home/cameron/Sources/smb-decomp/./diff.py:1240: SyntaxWarning: invalid escape sequence '\S'
  + "(\S+)",
/home/cameron/Sources/smb-decomp/./diff.py:3200: SyntaxWarning: invalid escape sequence '\.'
  if source_line and re.fullmatch(".*\.c(?:pp)?:\d+", source_line):
/home/cameron/Sources/smb-decomp/./diff.py:1024: DeprecationWarning: ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead
  if isinstance(node, ast.Num):  # <number>
/home/cameron/Sources/smb-decomp/./diff.py:1025: DeprecationWarning: Attribute n is deprecated and will be removed in Python 3.14; use value instead
  return node.n
Not able to find function in map file.

[simonlindholm]

965eaa3 fixes those warnings, does that help?

[camthehaxman]

There's still another one.

./diff.py:1034: DeprecationWarning: ast.Num is deprecated and will be removed in Python 3.14; use ast.Constant instead
  elif hasattr(ast, "Num") and isinstance(node, ast.Num):  # <number>, pre 3.8

[simonlindholm]

Right, fixed in 738c7af. Does the map file parsing work now?

[camthehaxman]

The regex doesn't appear to be compatible with the map file anymore, at least the one in my smb-decomp repo. I seem to remember the map file format changed between CodeWarrior versions.

[simonlindholm]

Does it work with older Python versions? I don't have the smb-decomp repo set up nor any knowledge of the cw map file format, so I think this would best be fixed by someone on your side debugging what the issue could be.

[camthehaxman]

My distro doesn't have any older Python versions, but I'm 99% sure it's an issue with the regex. I'll look into it later and see what the differences are.

[camthehaxman]

SMB's map file format looks like this

.text section layout
  Starting        Virtual
  address  Size   address
  -----------------------
  00000000 000000 800065a0  1 .text 	c++_exception_data.s.o 
  00000000 0002f8 800065a0  1 .text 	main.c.o 
  00000000 0002f8 800065a0  4 main 	main.c.o 
  000002f8 0006f0 80006898  1 .text 	init.c.o 
  000002f8 000060 80006898  4 initialize 	init.c.o 
  00000358 000184 800068f8  4 init_gx 	init.c.o 
  000004dc 0000b4 80006a7c  4 init_tv 	init.c.o 
  00000590 000058 80006b30  4 init_vi 	init.c.o 
  000005e8 00009c 80006b88  4 init_gx_2 	init.c.o 
  00000684 000024 80006c24  4 init_dvd 	init.c.o 
  000006a8 000260 80006c48  4 init_heaps 	init.c.o 
  00000908 00008c 80006ea8  4 init_rel 	init.c.o 
  00000994 000054 80006f34  4 init_cache 	init.c.o 
  000009e8 0000ac 80006f88  1 .text 	init_2.c.o 
  000009e8 0000ac 80006f88  4 init_cache_ptrs 	init_2.c.o 
  00000a94 00249c 80007034  1 .text 	mathutil.c.o 
  00000a94 00004c 80007034  4 mathutil_init 	mathutil.c.o 
  00000ae0 000030 80007080  4 float_return_values 	mathutil.c.o 

The first field looks to be the offset into the section, the second field is the size, and the third field is the virtual (RAM) address.