on Sat Sep 01 2007, Chris Lattner <clattner-AT-apple.com> wrote:
Can you give me a specific example of where making the entire lexer a template would be more useful than adding a couple of virtual method calls? It isn't meaningful to lex anything other than a sequence of char's
You're serious? It's meaningless to lex UTF-32?
for example, and efficient buffer management (at least in our context) means that the input to the lexer isn't useful as an iterator interface.
Well, the kind of input sequence is exactly one thing I would templatize.
The point of most of the LLVM design decisions is not to hide from templates: it is to use the right C++ design features in the places where they make the most sense. C++ is a very rich language and offers a wide design space to choose from. Templates are one important piece of this design space, but C++ also offers many other great things.
Agreed. -- Dave Abrahams Boost Consulting http://www.boost-consulting.com The Astoria Seminar ==> http://www.astoriaseminar.com