gcc/testsuite/gdc.test/compilable/test10066.d

   1 void main()
   2 {
   3     alias Zoo = Foo!(1);
   4 }
   5
   6 struct Foo(size_t N)
   7 {
   8     string bar()
   9     {
  10         Appender!(string) w;
  11         char[] buf; put(w, buf);
  12         return "";
  13     }
  14
  15     public bool opEquals(T)(T other) const
  16     // Add const, different from bug 10056
  17     {
  18         alias Foo!(typeof(this), T, "CMP") P;
  19         return false;
  20     }
  21 }
  22
  23 template Foo(T, U, string OP)
  24 {
  25     static if (T.ISEMPTY && U.ISEMPTY)
  26         enum bool S = false;
  27     else
  28         enum bool S = false;
  29
  30     alias Foo = Foo!(0);
  31 }
  32
  33 /**********************************************/
  34
  35 void put(R, E)(ref R r, E e)
  36 {
  37     static if (is(typeof(r.put(e))))
  38     {
  39         r.put(e);
  40     }
  41     else
  42     {
  43         static assert(false, "Cannot put a "~E.stringof~" into a "~R.stringof);
  44     }
  45 }
  46
  47 struct Appender(A : T[], T)
  48 {
  49     private template canPutItem(U)
  50     {
  51         enum bool canPutItem = is(U : T);
  52     }
  53     private template canPutRange(R)
  54     {
  55         enum bool canPutRange = is(typeof(Appender.init.put(R.init[0])));
  56     }
  57
  58     void put(U)(U item) if (canPutItem!U)
  59     {
  60         char[T.sizeof == 1 ? 4 : 2] encoded;
  61         put(encoded[]);
  62     }
  63     void put(R)(R items) if (canPutRange!R)
  64     {
  65     }
  66 }