spacebat
I’m writing module that will accept a function name and arguments looking like foo(bar, baz) - as Kernel.def/2 does but without a body, and given M is known at compile time I want it to expand to:
def foo(bar, baz), do: M.foo(bar, baz)
I can see how to do this by manipulating the AST. The :foo in:
{:foo, [], [{:bar, [], Elixir}, {:baz, [], Elixir}]} # => foo(bar, baz)
…becomes…
{:., [], [{:__aliases__, [alias: false], [:M]}, :foo]}
In Lisp you’d be able to do something like this using the quote/unquote forms - is it possible in Elixir?
PS. I don’t think defdelegate is right for this as the function body generated by the macro may be more complicated - this is just the part I couldn’t see a nice approach for.
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kip
Yes, very similar to lisp.
This is an overly simplistic implementation but it might be enough for your needs.
Take a look at the implementation of the defdelegate macro and you’ll see it’s basically doing the same thing as the code above - only more generalised.