Re: command line evaluator

[steve donovan <steve.j.donovan@...>]

On Fri, Jan 22, 2010 at 3:44 AM, David Manura <dm.lua@math2.org> wrote:
> A similar case is Perl's special qw() operator that makes these two equivalent:
>
>  @x = ('a', 'b', 'c');
>  @x = qw(a b c);

I did files as a macro:

def ('files',{'arg'; handle_parms =
macro.parameter_grabber(false,false,'<start>')},
	function(ls,arg)
		local subst,put = macro.subst_putter()
		put '{'
		local n = macro.length_of(arg)
		local value_of = macro.value_of
		local i = 1
		while i <= n do
			if i < n-1 and value_of(arg,i+1) == '.' then -- NAME . EXT
				put('<string>',value_of(arg,i)..'.'..value_of(arg,i+2))
				i = i + 2
			else
				put('<string>',value_of(arg,i))
			end
			put ','
			i = i + 1
		end
		put '}'
		return subst
	end
)

> p (files(one.c two.c three.c))
{ "one.c", "two.c", "three.c" }

It would be an interesting exercise to see how much of CMake's syntax
can be done using a few macros.

steve d.