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// https://issues.dlang.org/show_bug.cgi?id=22860
class C1
{
SumType!(C1, C2) field;
}
class C2
{
SumType!(SumType!(C1, C2)) field;
}
alias AliasSeq(TList...) = TList;
template allSatisfy(alias F, T...)
{
static foreach (Ti; T)
{
static if (!F!Ti)
enum allSatisfy = false;
}
}
struct This {}
enum isAssignableTo(T) = isAssignable!T;
enum isHashable(T) = __traits(compiles, { T.init; });
struct SumType(Types...)
{
alias Types = AliasSeq!(ReplaceTypeUnless!(isSumTypeInstance, This, typeof(this), TemplateArgsOf!SumType));
static foreach (T; Types)
{
static if (isAssignableTo!T)
{
}
}
static if (allSatisfy!(isAssignableTo, Types))
{
}
static if (allSatisfy!(isHashable, Types))
size_t toHash;
}
bool isSumTypeInstance;
alias TemplateArgsOf(T : Base!Args, alias Base, Args...) = Args;
enum isAssignable(Lhs, Rhs = Lhs) = isRvalueAssignable!(Lhs, Rhs) ;
enum isRvalueAssignable(Lhs, Rhs ) = __traits(compiles, { lvalueOf!Lhs = Rhs; });
struct __InoutWorkaroundStruct{}
T lvalueOf(T)(__InoutWorkaroundStruct );
template ReplaceTypeUnless(alias pred, From, To, T...)
{
static if (T.length == 1)
alias ReplaceTypeUnless = T;
static if (T.length > 1)
alias ReplaceTypeUnless = AliasSeq!(ReplaceTypeUnless!(pred, From, To, T[1 ]));
}
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