On Monday, 14 January 2013 at 14:16:32 UTC, mist wrote:
While working on
https://github.com/D-Programming-Language/phobos/pull/863 I
have noticed that inout breaks ParameterStorageClassTuple and
family. I have started working on a fix but quick comparison of
http://dlang.org/declaration.html#StorageClass vs
http://dlang.org/phobos/std_traits.html#.ParameterStorageClassTuple
have left me in confusion without clear understanding what
parameter storage classes are supposed to be defined to.
There is also InOutX entry in grammar which lists some of
storage classes and seems more relevant to parameter storage
classes (i.e. includes ref).
Can someone give a more structured explanation: what is
supposed to be a storage class, what is supposed to be a type
storage class and what - a type qualifier? I'd like to update
std.traits demanglers to the latest state of things, but
grammar description does not seem clear enough.
http://dlang.org/declaration.html#StorageClass
InOutX is the list of 'syntactically allowed' keywords.
Among them, these four are supported as actual 'parameter storage
classes'.
scope
out
ref
lazy
In current, 'in' is directly replaced to 'const', and it is
treated as a part of parameter type.
'inout' is also treated as a type qualifier, and then is the same.
Kenji Hara
