Parsing a context free grammar in general is O(n^3), but parsing an LL(1) grammar is O(n). That's a pretty huge difference, if you're not careful. Imagine you'v

Parsing a context free grammar in general is O(n^3), but parsing an LL(1) grammar is O(n). That's a pretty huge difference, if you're not careful. Imagine you've got a million lines of code to parse.