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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 1996-2026 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// 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 3 of the License, 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, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if ! defined (octave_pt_except_h)
#define octave_pt_except_h 1
#include "octave-config.h"
#include "pt-cmd.h"
#include "pt-id.h"
#include "pt-walk.h"
OCTAVE_BEGIN_NAMESPACE(octave)
class comment_list;
class tree_statement_list;
// Simple exception handling.
class OCTINTERP_API tree_try_catch_command : public tree_command
{
public:
tree_try_catch_command (const token try_tok, tree_statement_list *tc, const token catch_tok, tree_identifier *id, tree_statement_list *cc, const token& end_tok)
: m_try_tok (try_tok), m_try_code (tc), m_catch_tok (catch_tok), m_expr_id (id), m_catch_code (cc), m_end_tok (end_tok)
{ }
OCTAVE_DISABLE_COPY_MOVE (tree_try_catch_command)
~tree_try_catch_command ();
filepos beg_pos () const { return m_try_tok.beg_pos (); }
filepos end_pos () const { return m_end_tok.end_pos (); }
comment_list leading_comments () const { return m_try_tok.leading_comments (); }
comment_list trailing_comments () const { return m_end_tok.trailing_comments (); }
token try_token () const { return m_try_tok; }
tree_statement_list * body () { return m_try_code; }
token catch_token () const { return m_catch_tok; }
tree_identifier * identifier () { return m_expr_id; }
tree_statement_list * cleanup () { return m_catch_code; }
token end_token () const { return m_end_tok; }
void accept (tree_walker& tw)
{
tw.visit_try_catch_command (*this);
}
private:
token m_try_tok;
// The first block of code to attempt to execute.
tree_statement_list *m_try_code;
token m_catch_tok;
// Identifier to modify.
tree_identifier *m_expr_id;
// The code to execute if an error occurs in the first block.
tree_statement_list *m_catch_code;
token m_end_tok;
};
// Simple exception handling.
class OCTINTERP_API tree_unwind_protect_command : public tree_command
{
public:
tree_unwind_protect_command (const token& unwind_tok, tree_statement_list *tc, const token& cleanup_tok, tree_statement_list *cc, const token& end_tok)
: m_unwind_tok (unwind_tok), m_unwind_protect_code (tc), m_cleanup_tok (cleanup_tok), m_cleanup_code (cc), m_end_tok (end_tok)
{ }
OCTAVE_DISABLE_COPY_MOVE (tree_unwind_protect_command)
~tree_unwind_protect_command ();
filepos beg_pos () const { return m_unwind_tok.beg_pos (); }
filepos end_pos () const { return m_end_tok.end_pos (); }
comment_list leading_comments () const { return m_unwind_tok.leading_comments (); }
comment_list trailing_comments () const { return m_end_tok.trailing_comments (); }
token unwind_token () const { return m_unwind_tok; }
tree_statement_list * body () { return m_unwind_protect_code; }
token cleanup_token () { return m_cleanup_tok; }
tree_statement_list * cleanup () { return m_cleanup_code; }
token end_token () { return m_end_tok; }
void accept (tree_walker& tw)
{
tw.visit_unwind_protect_command (*this);
}
private:
token m_unwind_tok;
// The first body of code to attempt to execute.
tree_statement_list *m_unwind_protect_code;
token m_cleanup_tok;
// The body of code to execute no matter what happens in the first
// body of code.
tree_statement_list *m_cleanup_code;
token m_end_tok;
};
OCTAVE_END_NAMESPACE(octave)
#endif
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