(Member) function attributes should be placed under `function_declaration`

[nordlow]

Currently property in

void foo() pure @property;

is put in

(at_attribute (identifier))

when it should be

(function_declaration (member_function_attribute (at_attribute (identifier))))

to conform with pure being put in

(function_declaration (member_function_attribute (pure)))

.

[gdamore]

I'm not sure the grammar is completely clear here. I'll have a look -- but its possible that the grammar is ambiguous in this case (there are other cases where you need semantic information that isn't available in the syntax tree. This might be one of them.)

[gdamore]

I tested this, and it seems right already:

(source_file
  (function_declaration
    (type
      (void))
    (identifier)
    (parameters)
    (member_function_attribute
      (pure))
    (member_function_attribute
      (at_attribute
        (identifier)))
    (function_body)))

[gdamore]

I've added a test case for the above. I'm closing this because I don't see a bug right now.