add the %throws directive

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@8348 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/exception_order.i

@@ -15,6 +15,8 @@
   }
 }
 
+%throws(E1,E2) A::barfoo(int i);
+
 
 %inline %{
   struct E1
@@ -50,5 +52,16 @@
       throw E3();
       return 0;
     }
+
+
+    int barfoo(int i)
+    {
+      if (i == 1) {
+	throw E1();
+      } else {
+	throw E2();
+      }
+      return 0;
+    }
   };
 %}

Examples/test-suite/python/exception_order_runme.py

@@ -24,3 +24,18 @@ except RuntimeError,e:
     print "bad exception order", 
     raise RuntimeError, e.args
 
+
+
+try:
+  a.barfoo(1)
+except E1,e:
+  pass
+except:
+  raise RuntimeError, "bad exception order"
+
+try:
+  a.barfoo(2)
+except E2,e:
+  pass
+except:
+  raise RuntimeError, "bad exception order"