You can put the attribute on the function.
There are a couple of go libraries that use struct tags in a similar way. Such as code.google.com/p/gorest
On Tuesday, 6 November 2012 at 07:55:51 UTC, Walter Bright wrote:
User Defined Attributes (UDA) are compile time expressions that can be attached to a declaration.
Hmmm, it didn't work on the most important place for my use case, function parameters:
void a(["test"] int foo) {
pragma(msg, __traits(getAttributes, foo));
}
test.d(1): Error: basic type expected, not [
test.d(1): Error: found 'int' when expecting ')'
test.d(1): Error: semicolon expected following function declaration
test.d(1): Error: no identifier for declarator foo
test.d(1): Error: semicolon expected, not ')'
test.d(1): Error: Declaration expected, not ')'
The reason why this is important to me is I have a nice automatic form builder given a function signature. I'd like to add things like hints about the params that my existing code can take a look at.
(a problem that might remain is being able to reference the parameters outside... I use a ParameterTypeTuple and .stringof right now but that probably won't work for getAttributes. But we can always solve that later.)