[capnproto] How to make a constant list of enumeration values in capn proto schema file

[f***@prenav.com]

Hi.

I am trying to make a list of constant enumeration values in a capn proto
schema file.

enum foo{
unset @0;
bar @1;
bars @2;
}


const fooStates :List(foo) = [foo.unset, foo.bar, foo.bars];


However, the report of the parser is that unset is not a member of foo. I tried foo.Unset, foo.UNSET, foo::unset, foo::UNSET and nothing worked. foo.unset and foo.UNSET also failed due to unset (UNSET) not being a member of foo and foo::XXX fails due to a parse error.


I can workaround the language limitation by making a list of ints but that is prone to error in the face of changes to the foo enumeration.


const fooStates :List(UInt16) = [1, 2, 3];


Is there a way to make a list of enum values as a constant in a captn proto schema file?


Thanks in advance!


Forest

['Kenton Varda' via Cap'n Proto]

Hi Forest,

You can do:

const fooStates :List(foo) = [unset, bar, bars];

The parser knows that you're parsing values of type "foo", so it doesn't
need the "foo." context.

-Kenton

Post by f***@prenav.com
Hi.
I am trying to make a list of constant enumeration values in a capn proto
schema file.
enum foo{
}
const fooStates :List(foo) = [foo.unset, foo.bar, foo.bars];
However, the report of the parser is that unset is not a member of foo. I tried foo.Unset, foo.UNSET, foo::unset, foo::UNSET and nothing worked. foo.unset and foo.UNSET also failed due to unset (UNSET) not being a member of foo and foo::XXX fails due to a parse error.
I can workaround the language limitation by making a list of ints but that is prone to error in the face of changes to the foo enumeration.
const fooStates :List(UInt16) = [1, 2, 3];
Is there a way to make a list of enum values as a constant in a captn proto schema file?
Thanks in advance!
Forest
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[f***@prenav.com]

Thanks a ton!

Forest

Post by 'Kenton Varda' via Cap'n Proto
Hi Forest,
const fooStates :List(foo) = [unset, bar, bars];
The parser knows that you're parsing values of type "foo", so it doesn't
need the "foo." context.
-Kenton

Post by f***@prenav.com
Hi.
I am trying to make a list of constant enumeration values in a capn proto
schema file.
enum foo{
}
const fooStates :List(foo) = [foo.unset, foo.bar, foo.bars];
However, the report of the parser is that unset is not a member of foo. I tried foo.Unset, foo.UNSET, foo::unset, foo::UNSET and nothing worked. foo.unset and foo.UNSET also failed due to unset (UNSET) not being a member of foo and foo::XXX fails due to a parse error.
I can workaround the language limitation by making a list of ints but that is prone to error in the face of changes to the foo enumeration.
const fooStates :List(UInt16) = [1, 2, 3];
Is there a way to make a list of enum values as a constant in a captn proto schema file?
Thanks in advance!
Forest
--
You received this message because you are subscribed to the Google Groups
"Cap'n Proto" group.
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Visit this group at https://groups.google.com/group/capnproto.