The problem seems to have to do with it getting wrapped in a quote block.
~~~
julia> quote module MO end end
quote # none, line 1:
$(Expr(:module, true, :MO, quote
eval(x) = top(Core).eval(MO,x)
eval(m,x) = top(Core).eval(m,x)
end))
end
julia> :(module MO end)
:($(Expr(:module, true, :MO, quote
eval(x) = top(Core).eval(MO,x)
eval(m,x) = top(Core).eval(m,x)
end)))
julia> eval(quote module MO end end)
ERROR: invalid method definition: not a generic function
julia> eval(:(module MO end))
Warning: replacing module MO
~~~
On Wed, Jan 29, 2014 at 2:13 PM, Mauro <[email protected]> wrote:
> As far as I can tell, below macro is the identity-macro and works for
> everything I tried but for module definitions. Why? In fact, I
> struggle to get a module definition working within a macro.
>
> julia> macro id(ex)
> :($(esc(ex)))
> end
>
> julia> @id x=5
> 5
> julia> @id type MT end
>
> julia> @id module MO end
> ERROR: invalid method definition: not a generic function
>
> Second example:
>
> macro typ(ex) # this works and produces type TY
> :(esc(type TY end))
> end
>
> macro mod(ex) # this doesn't
> :(esc(module MO end))
> end
>
> ERROR: syntax: malformed module expression
>
> Is there a way to define modules within macros?
>
