(* m2convert.def definition module for m2convert.cc.

Copyright (C) 2011-2024 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.

This file is part of GNU Modula-2.

GNU Modula-2 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 3, or (at your option)
any later version.

GNU Modula-2 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 GNU Modula-2; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  *)

DEFINITION MODULE FOR "C" m2convert ;

FROM m2tree IMPORT Tree ;
FROM m2linemap IMPORT location_t ;


(*
   ToWord - converts an expression (Integer or Ordinal type) into
            a WORD.
*)

PROCEDURE ToWord (location: location_t; expr: Tree) : Tree ;


(*
   ToCardinal - convert an expression, expr, to a CARDINAL.
*)

PROCEDURE ToCardinal (location: location_t; expr: Tree) : Tree ;


(*
   ToInteger - convert an expression, expr, to an INTEGER.
*)

PROCEDURE ToInteger (location: location_t; expr: Tree) : Tree ;


(*
   ToBitset - convert an expression, expr, to a BITSET.
*)

PROCEDURE ToBitset (location: location_t; expr: Tree) : Tree ;


(*
   ConvertToPtr - convert an expression to a void *.
*)

PROCEDURE ConvertToPtr (p: Tree) : Tree ;


(*
    BuildConvert - build and return tree VAL(type, value)
                   checkOverflow determines whether we
                   should suppress overflow checking.
*)

PROCEDURE BuildConvert (location: location_t; type: Tree; value: Tree; checkOverflow: BOOLEAN) : Tree ;


(*
   ConvertConstantAndCheck - in Modula-2 sementics: return( VAL(type, expr) )
                             Only to be used for a constant expr,
                             overflow checking is performed.
*)

PROCEDURE ConvertConstantAndCheck (location: location_t; type: Tree; expr: Tree) : Tree ;


(*
   ConvertString - converts string, expr, into a string of type, type.
*)

PROCEDURE ConvertString (type, expr: Tree) : Tree ;


(*
   GenericToType - converts, expr, into, type, providing that expr is
                   a generic system type (byte, word etc).  Otherwise
                   expr is returned unaltered.
*)

PROCEDURE GenericToType (location: location_t; type, expr: Tree) : Tree ;


END m2convert.