macro 'method_missing' expects 1 argument (call)

[vladfaust]

I'd like this code to work (https://carc.in/#/r/5lun):

class Foo
  macro method_missing(call, file = __FILE__, line = __LINE__)
    {% raise "Method #{call.name} missing at #{file}:#{line}" %}
  end
end

Foo.new.bar

# Expected: Method bar missing at temp.cr:7
# Got: Error in line 2: macro 'method_missing' expects 1 argument (call)

To display the place from there the call occurred.

It would be even better if I could display the caller line in that macro (i.e. line: Foo.bar)

[jhass]

Maybe fixing

class Foo
  macro method_missing(call)
    {% raise "Method #{call.name} missing at #{call.filename}:#{call.line_number}" %}
  end
end

Foo.new.bar

would be good enough

[Sija]

@jhass nope, it returns Error in line 3: Method bar missing at nil:nil,
see https://carc.in/#/r/5lqt

@vladfaust there's a mistake in the code you've posted, Foo.bar should be Foo.new.bar

[jhass]

That's my point, maybe fixing the nils instead of making the macros signature more complex is good enough.

[vladfaust]

@Sija, fixed, thanks.

Also call.receiver returns Nop.

Is it possible to somehow print the call line? E.g.

some_complex_call(Foo.new.bar)
                          ^~~~

[bew]

@vladfaust that would be a job for call.raise "..." but the lack of location on the call makes it show nothing.