RE: Lua and QuakeC

[Quinn Tyler Jackson <quinn-j@...>]

> It seems like a good percentage of the people on this list use
> Lua in a game
> engine.
>
> Brian.

I use Lua as a grammar reduction event language. What's nice about Lua (for
my purposes) is that I can do this:

grammar SomeGrammar
{
	S ::= a b c;
	a ::= '[a-z]+';
	b ::= '[0-9]+';
	c ::= '[a-z]+';

	@function_impls = :{
		-- Lua code for reduction events
		function b_event(P)
			if (P:MATCHED()) then
				print(P:LEXEME());
			end
		end
	}:;
};

This allows grammars to be loaded and debugged at run-time, rather than
requiring them to be compiled outside of the grammar development
environment. By throwing a Lua debugger and profiler into the grammar
development environment, it became possible to single step through both the
grammar portions and the event callbacks. It saves quite a bit of
development time to be able to do that with a grammar.

In the process of integrating Lua into the grammar development environment,
I've had to write a Lua debugger and profiler. I've been considering
factoring out the debugger and profiler for use in stand-alone Lua
development. Are there any Lua profilers out there already?

--
Quinn