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// PERMUTE_ARGS:
public struct CirBuff(T)
{
private T[] data;
private size_t head = 0;
private size_t size = 0;
public size_t length() const { return size; }
public bool opEquals(CirBuff!T d) @trusted
{
if (length != d.length)
return false;
for (size_t i=0; i!=size; ++i)
{
if (this.data[(this.head+i) % this.data.length] !=
d.data[(d.head + i) % d.data.length])
{
return false;
}
}
return true;
}
}
class Once
{
Foo!Bar _bar;
}
class Bar
{
static Once _once;
mixin(sync!(Once, "_once"));
}
class Foo(T = int)
{
CirBuff!T _buff;
}
template sync(T, string U = "this", size_t ITER = 0)
{
static if (ITER == __traits(derivedMembers, T).length)
enum sync = "";
else
{
enum string mem = __traits(derivedMembers, T)[ITER];
enum string sync =
"static if(! __traits(isVirtualMethod, " ~ U ~ "." ~ mem ~ ")) { }"
~ sync!(T, U, ITER+1);
}
}
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