Hi Andrei,
On Monday, October 19, 2015 at 3:45:14 AM UTC-4, Andrei Zh wrote:
>
> I'm trying to write a macro for generation of new functions given their
> name and arguments, e.g. given macro call:
>
> @deffun foo(a, b)
>
> Coming from Common Lisp, I tried writing similar macros but failed to make
them work. I've found that
@some_macro function foo(a, b)
works a lot better. It's more verbose, but it composes better with other
macros (kinda like Python decorators...) I use
@capture(fun_def, begin function fname_(args__) body__ end end)
esc(:(function $(fname)($(args...))
...)
where @capture comes from macrotools.jl
>
> Important part is that both - name of a function and name of arguments -
> should be preserved. My best attempt to do it looks like this:
>
> function $(esc(func))($(esc(args...)))
>
esc isn't magical, just `@show esc(:a)` to see what it does. You can write
the arguments as
($(map(esc, args)...))
and that _should_work, but last time I tried it doesn't because of a bug
where Julia doesn't check properly for escaping in argument lists.
> `$(esc(func))` works pretty well, but `args` isn't a Symbol and so macro
> compilation fails.
>
> 1. How do I escape list of arguments here?
> 2. How do I make this macro to also support argument types? E.g. given
> macro call:
>
>
> @deffun foo(a::Int, b::Float64)
>
> the following functions should be generated:
>
> function foo(a::Int, b::Float64)
> # do some stuff
>
>
> end
>
>
>
>
