_obsolete_dont_use/exex.d

   1 /* Invisible Vector Library
   2  * coded by Ketmar // Invisible Vector <ketmar@ketmar.no-ip.org>
   3  * Understanding is not required. Only obedience.
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, version 3 of the License ONLY.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 // severely outdated exception helpers
  18 module iv.exex /*is aliced*/;
  19 import iv.alice;
  20
  21
  22 // ////////////////////////////////////////////////////////////////////////// //
  23 mixin template ExceptionCtor() {
  24   static if (__VERSION__ > 2067) {
  25     this (string msg, string file=__FILE__, usize line=__LINE__, Throwable next=null) @safe pure nothrow @nogc {
  26       super(msg, file, line, next);
  27     }
  28   } else {
  29     this (string msg, string file=__FILE__, usize line=__LINE__, Throwable next=null) @safe pure nothrow {
  30       super(msg, file, line, next);
  31     }
  32   }
  33 }
  34
  35
  36 // usage:
  37 //   mixin(MyException!"MyEx");
  38 //   mixin(MyException!("MyEx1", "MyEx"));
  39 enum MyException(string name, string base="Exception") = `class `~name~` : `~base~` { mixin ExceptionCtor; }`;
  40
  41
  42 mixin(MyException!"IVException");
  43 mixin(MyException!("IVNamedExceptionBase", "IVException"));
  44 mixin(MyException!("IVNamedException(string name)", "IVNamedExceptionBase"));
  45
  46
  47 version(test_exex)
  48 unittest {
  49   import iv.writer;
  50
  51   void testit (void delegate () dg) {
  52     try {
  53       dg();
  54     } catch (IVNamedException!"Alice" e) {
  55       writeln("from Alice: ", e.msg);
  56     } catch (IVNamedException!"Miriel" e) {
  57       writeln("from Miriel: ", e.msg);
  58     } catch (IVException e) {
  59       writeln("from IV: ", e.msg);
  60     }
  61   }
  62
  63   testit({ throw new IVException("msg"); });
  64   testit({ throw new IVNamedException!"Alice"("Hi, I'm Alice!"); });
  65   testit({ throw new IVNamedException!"Miriel"("Hi, I'm Miriel!"); });
  66 }