_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, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 // severely outdated exception helpers
  19 module iv.exex /*is aliced*/;
  20 import iv.alice;
  21
  22
  23 // ////////////////////////////////////////////////////////////////////////// //
  24 mixin template ExceptionCtor() {
  25   static if (__VERSION__ > 2067) {
  26     this (string msg, string file=__FILE__, usize line=__LINE__, Throwable next=null) @safe pure nothrow @nogc {
  27       super(msg, file, line, next);
  28     }
  29   } else {
  30     this (string msg, string file=__FILE__, usize line=__LINE__, Throwable next=null) @safe pure nothrow {
  31       super(msg, file, line, next);
  32     }
  33   }
  34 }
  35
  36
  37 // usage:
  38 //   mixin(MyException!"MyEx");
  39 //   mixin(MyException!("MyEx1", "MyEx"));
  40 enum MyException(string name, string base="Exception") = `class `~name~` : `~base~` { mixin ExceptionCtor; }`;
  41
  42
  43 mixin(MyException!"IVException");
  44 mixin(MyException!("IVNamedExceptionBase", "IVException"));
  45 mixin(MyException!("IVNamedException(string name)", "IVNamedExceptionBase"));
  46
  47
  48 version(test_exex)
  49 unittest {
  50   import iv.writer;
  51
  52   void testit (void delegate () dg) {
  53     try {
  54       dg();
  55     } catch (IVNamedException!"Alice" e) {
  56       writeln("from Alice: ", e.msg);
  57     } catch (IVNamedException!"Miriel" e) {
  58       writeln("from Miriel: ", e.msg);
  59     } catch (IVException e) {
  60       writeln("from IV: ", e.msg);
  61     }
  62   }
  63
  64   testit({ throw new IVException("msg"); });
  65   testit({ throw new IVNamedException!"Alice"("Hi, I'm Alice!"); });
  66   testit({ throw new IVNamedException!"Miriel"("Hi, I'm Miriel!"); });
  67 }