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+/*
+
+Copyright (C) 1996, 1997 John W. Eaton
+
+This file is part of Octave.
+
+Octave is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+Octave is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with Octave; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#if !defined (octave_mapper_h)
+#define octave_mapper_h 1
+
+#if defined (__GNUG__)
+#pragma interface
+#endif
+
+#include <string>
+
+#include "ov-fcn.h"
+#include "ov-typeinfo.h"
+
+class octave_value;
+class octave_value_list;
+
+// Builtin mapper functions.
+
+class
+octave_mapper : public octave_function
+{
+public:
+
+  typedef int (*ch_mapper) (int);
+  typedef double (*d_d_mapper) (double);
+  typedef double (*d_c_mapper) (const Complex&);
+  typedef Complex (*c_c_mapper) (const Complex&);
+
+  octave_mapper (ch_mapper ch, d_d_mapper dd, d_c_mapper dc,
+		 c_c_mapper cc, double ll, double ul, int f,
+		 const string& nm = string (),
+		 const string& ds = string ())
+    : octave_function (nm, ds), ch_map_fcn (ch), d_d_map_fcn (dd),
+      d_c_map_fcn (dc), c_c_map_fcn (cc),
+      lower_limit (ll), upper_limit (ul), flag (f) { }
+
+  ~octave_mapper (void) { }
+
+  void *operator new (size_t size)
+    { return allocator.alloc (size); }
+
+  void operator delete (void *p, size_t size)
+    { allocator.free (p, size); }
+
+  octave_function *function_value (bool) { return this; }
+
+  octave_value_list do_index_op (int nargout, const octave_value_list& args);
+
+  int type_id (void) const { return t_id; }
+
+  string type_name (void) const { return t_name; }
+
+  static int static_type_id (void) { return t_id; }
+
+  static void register_type (void)
+    { t_id = octave_value_typeinfo::register_type (t_name); }
+
+private:
+
+  octave_mapper (void);
+
+  octave_mapper (const octave_mapper& m);
+
+  octave_value apply (const octave_value& arg) const;
+
+  // ch_map_fcn is a kluge.
+
+  ch_mapper ch_map_fcn;
+  d_d_mapper d_d_map_fcn;
+  d_c_mapper d_c_map_fcn;
+  c_c_mapper c_c_map_fcn;
+
+  // If flag is nonzero and we are not calling ch_map_fcn, lower_limit
+  // and  upper_limit specify the range of values for which a real arg
+  // returns a real value.  Outside that range, we have to convert args
+  // to complex, and call the complex valued function.
+
+  double lower_limit;
+  double upper_limit;
+
+  // For ch_map_fcn, flag has the following meanings:
+  //
+  //   0  =>  this function returns a matrix of ones and zeros
+  //   1  =>  this function returns a numeric matrix (any values)
+  //   2  =>  this function returns a string array
+  //
+  // For other mappers, nonzero means that this function can return a
+  // complex value for some real arguments.
+
+  int flag;
+
+  // For custom memory management.
+  static octave_allocator allocator;
+
+  // Type id of list objects, set by register_type().
+  static int t_id;
+
+  // Type name of list objects, defined in ov-list.cc.
+  static const string t_name;
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/