1. No more platform(), conditional includes, conditional functions, conditional compilation, all done!
Wow, I am pumped... Look at this code:
with define=debug
atom lib
ifdef debug then
include safe.e
else
include machine.e
end ifdef
ifdef LINUX then
lib = open_dll("hello.so")
global function say_hello()
puts(1, "Hello from Linux!\n")
end function
elsifdef WIN32 then
lib = open_dll("hello.dll")
global function say_hello()
puts(1, "Hello from Windows!\n")
end function
elsifdef DOS32 then
lib = -1
global function say_hello()
puts(1, "Hello from DOS!\n")
end function
end ifdef
say_hello()
This all works and this works at the parsing level. What this means is:
for i = 1 to length(lines) do
ifdef debug then
printf(1, "Line: %s\n", {lines[i]})
end ifdef
-- real code
end for
During the parse, the ifdef is translated at parse/compile time. Not runtime.
This means that the decision "ifdef debug" is made once, not every iteration of
the loop. Therefore, if debug is defined, then this is *exactly* what the code
looks like to the runtime or in the C code translated:
for i = 1 to length(lines) do
printf(1, "Line: %s\n", {lines[i]})
-- real code
end for
Notice, no decision logic! If debug is not defined, then in both the interpreter
and C code translated, you only see:
for i = 1 to length(lines) do
-- real code
end for
This is exciting!
--
Jeremy Cowgar
http://jeremy.cowgar.com
