More complex from a theory view, but not hard. You need a symbol table regardless, and symbols tables are most decidedly not "hard" to implement. Sure, it's a

More complex from a theory view, but not hard. You need a symbol table regardless, and symbols tables are most decidedly not "hard" to implement. Sure, it's a layering violation, but that's how we were forced to write efficient code back when computing resources were scarce 30+ years ago. An entire C compiler and integrated development environment was only a couple of hundred KB of executable on computers back in the 1980s under MS-DOS and on the Amiga.