libphobos/libdruntime/rt/typeinfo/ti_delegate.d

   1 /**
   2  * TypeInfo support code.
   3  *
   4  * Copyright: Copyright Digital Mars 2004 - 2009.
   5  * License:   $(WEB www.boost.org/LICENSE_1_0.txt, Boost License 1.0).
   6  * Authors:   Walter Bright
   7  */
   8
   9 /*          Copyright Digital Mars 2004 - 2009.
  10  * Distributed under the Boost Software License, Version 1.0.
  11  *    (See accompanying file LICENSE or copy at
  12  *          http://www.boost.org/LICENSE_1_0.txt)
  13  */
  14 module rt.typeinfo.ti_delegate;
  15
  16 private import rt.util.hash;
  17
  18 // delegate
  19
  20 alias void delegate(int) dg;
  21
  22 class TypeInfo_D : TypeInfo
  23 {
  24     @trusted:
  25     const:
  26     pure:
  27     nothrow:
  28
  29     override size_t getHash(in void* p)
  30     {
  31         return rt.util.hash.hashOf(p[0 .. dg.sizeof], 0);
  32     }
  33
  34     override bool equals(in void* p1, in void* p2)
  35     {
  36         return *cast(dg *)p1 == *cast(dg *)p2;
  37     }
  38
  39     override @property size_t tsize() nothrow pure
  40     {
  41         return dg.sizeof;
  42     }
  43
  44     override void swap(void *p1, void *p2)
  45     {
  46         dg t;
  47
  48         t = *cast(dg *)p1;
  49         *cast(dg *)p1 = *cast(dg *)p2;
  50         *cast(dg *)p2 = t;
  51     }
  52
  53     override const(void)[] initializer() const @trusted
  54     {
  55         static immutable dg d;
  56
  57         return (cast(void *)null)[0 .. dg.sizeof];
  58     }
  59
  60     override @property uint flags() nothrow pure
  61     {
  62         return 1;
  63     }
  64 }