Den 26-08-2011 14:38, Adam Ruppe skrev:
My pet feature request could do this too. User defined attributes
combined with a list of functions called by a function.
===
@custom("mysafe") void foo() {}
void bar() {}
@custom("mysafe") void main() {
foo();
bar();
}
CheckCustomSafety!("mysafe", main);
template CheckCustomSafety(string attribute, alias func) {
static if(!__traits(hasCustomAttribute(func, attribute))
pragma(error, func.stringof ~ " is not " ~ attribute);
foreach(f; __traits(getCalledFunctions, func))
CheckCustomSafety!(attribute, f);
}
====
Couldn't this be used for marking classes as serializable. Something
like this:
class Foo {
@custom("serialize") Cake theCake;
Bar cache;
}
SerializeCustom!("serialize", Foo);
template SerializeCustom(string attribute, alias cls) {
foreach (m; __traits(listMembers, cls)) {
static if ( __traits(hasCustomAttribute(attribute, m) ) {
Serializer.register(cls, m);
}
}
}
----------
Though I would prefer if you could just write:
@custom("serialize") class Foo { ... }
instead of:
SerializeCustom!("serialize", Foo);
/Jonas
