The solution is available in the latest version??? Please elaborate. I'm
using 2.5.0 and I don't see it.
-Greg
On Tuesday, May 28, 2013 11:12:46 PM UTC-4, Giri Guntipalli wrote:
Hi enum values conflict for C++ is there any solution now solution
suggested below is available in latest version any workarounds to handle
this problem with 2.4.1 or latert versions.
Giri
On Friday, 20 August 2010 23:42:30 UTC+5:30, alopecoid wrote:
Hi,
This post is about the fact that protobuf enum values use C++ scoping
rules, meaning that, unlike in Java, enum values are siblings of their
type, not children of it.
Say I have the following contrived message:
message MyMessage {
enum Foo {
FIRST = 0;
SECOND = 1;
BOTH = 2;
}
required Foo foo = 1;
enum Bar {
FIRST = 0;
SECOND = 1;
BOTH = 2;
}
required Bar bar = 2;
}
This wouldn't compile because the protobuf compiler recognizes the
fact that for C++, the generated enum values for Foo and Bar would
conflict with each other.
However, for Java, this wouldn't be a problem. I would like to propose
that instead of punishing the generated Java code because of C++'s
strange enum behavior (by forcing developers to rename their enum
values even though they don't collide), that instead, the generated C+
+ enum declarations are wrapped in their own nested namespaces? For
example, something like:
namespace Foo {
enum Enum {
FIRST = 0;
SECOND = 1;
BOTH = 2;
}
}
namespace Bar {
enum Enum {
FIRST = 0;
SECOND = 1;
BOTH = 2;
}
}
At this point, the enum values would be accessed like Foo::FIRST,
Bar::FIRST, etc, which would eliminate the enum value collision
problem altogether, and at the same time make them appear to behave
more like Java's enum scoping rules (which arguably make more sense).
Thoughts?
Thank you.
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