Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtinfo/DtMmdb/dti_excs/Destructable.hh

@@ -0,0 +1,44 @@
+// $XConsortium: Destructable.hh /main/3 1996/06/11 16:50:40 cde-hal $
+#ifndef _Exceptions_hh_active
+ #error "Include this file by including Exceptions.hh"
+#endif
+
+#ifdef C_API
+#include "new_delete_simple.h"
+#endif
+
+class Destructable
+{
+#ifndef NATIVE_EXCEPTIONS
+public:
+  Destructable();
+  // Copy and assignment constructors necessary to maintain proper
+  // f_in_stack state variable.
+  Destructable (const Destructable &);
+  Destructable &operator = (const Destructable &);
+  virtual ~Destructable();
+
+  int in_stack();
+  int in_stack_set_size();
+
+#ifdef C_API
+  NEW_AND_DELETE_SIGNATURES(Destructable);
+#endif
+
+private:
+friend class Jump_Environment;
+friend class Exceptions;
+  static int stack_grows_down()
+    { return (g_size == 0); }
+
+  // Need this special method since Cfront 2.1 doesn't allow direct
+  // call to destructor from another class. 
+  void destruct();
+
+  static void *g_stack_start;
+  // We keep track of the size when the stack grows up.
+  // This is copied over to the unwind stack for stack-based objects. 
+  static unsigned short g_size;
+
+#endif
+};