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(* m2except.def provides an interface to build exception trees.
Copyright (C) 2008-2024 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" m2except ;
FROM m2tree IMPORT Tree ;
FROM m2linemap IMPORT location_t ;
(*
InitExceptions - initialize this module, it declares the
external functions and assigns them to
the appropriate global tree variables.
*)
PROCEDURE InitExceptions (location: location_t) ;
(*
BuildThrow - builds a throw statement and return the tree.
*)
PROCEDURE BuildThrow (location: location_t; t: Tree) : Tree ;
(*
BuildTryBegin - returns a tree representing the 'try' block.
*)
PROCEDURE BuildTryBegin (location: location_t) : Tree ;
(*
BuildTryEnd - builds the end of the Try block and prepares
for the catch handlers.
*)
PROCEDURE BuildTryEnd (tryBlock: Tree) ;
(*
BuildCatchBegin - creates a handler tree for the C++
statement 'catch (...) {'.
It returns the handler tree.
*)
PROCEDURE BuildCatchBegin (location: location_t) : Tree ;
(*
BuildCatchEnd - completes a try catch block.
It returns the, try_block, tree.
It creates the C++ statement
'}' which matches the catch above.
*)
PROCEDURE BuildCatchEnd (location: location_t; handler, tryBlock: Tree) : Tree ;
END m2except.
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