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Macroexpansion of @with_kw argument #154

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jkosata opened this issue Aug 21, 2023 · 1 comment · May be fixed by #155
Open

Macroexpansion of @with_kw argument #154

jkosata opened this issue Aug 21, 2023 · 1 comment · May be fixed by #155

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@jkosata
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jkosata commented Aug 21, 2023

I am experimenting with macros that define a struct. Here's an MWE of my problem:

using Parameters

macro structmacro()
    return quote struct mystruct; myfield::Int; end end
end

@with_kw @structmacro

gives

ERROR: LoadError: @with_kw only supported for types which have at least one field.

Seems that @with_kw does not expand @structmacro into a struct declaration. The solution is probably analogous to #21
@jkosata jkosata linked a pull request Aug 24, 2023 that will close this issue
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@jkosata
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jkosata commented Aug 24, 2023

Turns out expanding :macrocall and :block expressions in with_kw does the trick here. Submitting a pull request as I need this functionality for https://github.com/jkosata/DefaultFields.jl

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expanding macrocalls and blocks in with_kw jkosata/Parameters.jl
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@jkosata