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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 1996-2021 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"
namespace octave
{
class comment_list;
class tree_statement_list;
// Simple exception handling.
class tree_try_catch_command : public tree_command
{
public:
tree_try_catch_command (int l = -1, int c = -1)
: tree_command (l, c), m_try_code (nullptr), m_catch_code (nullptr),
m_expr_id (nullptr), m_lead_comm (nullptr), m_mid_comm (nullptr),
m_trail_comm (nullptr)
{ }
tree_try_catch_command (tree_statement_list *tc, tree_statement_list *cc,
tree_identifier *id,
comment_list *cl = nullptr,
comment_list *cm = nullptr,
comment_list *ct = nullptr,
int l = -1, int c = -1)
: tree_command (l, c), m_try_code (tc), m_catch_code (cc),
m_expr_id (id), m_lead_comm (cl), m_mid_comm (cm), m_trail_comm (ct)
{ }
// No copying!
tree_try_catch_command (const tree_try_catch_command&) = delete;
tree_try_catch_command& operator = (const tree_try_catch_command&) = delete;
~tree_try_catch_command (void);
tree_identifier * identifier (void) { return m_expr_id; }
tree_statement_list * body (void) { return m_try_code; }
tree_statement_list * cleanup (void) { return m_catch_code; }
comment_list * leading_comment (void) { return m_lead_comm; }
comment_list * middle_comment (void) { return m_mid_comm; }
comment_list * trailing_comment (void) { return m_trail_comm; }
void accept (tree_walker& tw)
{
tw.visit_try_catch_command (*this);
}
private:
// The first block of code to attempt to execute.
tree_statement_list *m_try_code;
// The code to execute if an error occurs in the first block.
tree_statement_list *m_catch_code;
// Identifier to modify.
tree_identifier *m_expr_id;
// Comment preceding TRY token.
comment_list *m_lead_comm;
// Comment preceding CATCH token.
comment_list *m_mid_comm;
// Comment preceding END_TRY_CATCH token.
comment_list *m_trail_comm;
};
// Simple exception handling.
class tree_unwind_protect_command : public tree_command
{
public:
tree_unwind_protect_command (int l = -1, int c = -1)
: tree_command (l, c),
m_unwind_protect_code (nullptr), m_cleanup_code (nullptr),
m_lead_comm (nullptr), m_mid_comm (nullptr), m_trail_comm (nullptr)
{ }
tree_unwind_protect_command (tree_statement_list *tc,
tree_statement_list *cc,
comment_list *cl = nullptr,
comment_list *cm = nullptr,
comment_list *ct = nullptr,
int l = -1, int c = -1)
: tree_command (l, c), m_unwind_protect_code (tc), m_cleanup_code (cc),
m_lead_comm (cl), m_mid_comm (cm), m_trail_comm (ct)
{ }
// No copying!
tree_unwind_protect_command (const tree_unwind_protect_command&) = delete;
tree_unwind_protect_command&
operator = (const tree_unwind_protect_command&) = delete;
~tree_unwind_protect_command (void);
tree_statement_list * body (void) { return m_unwind_protect_code; }
tree_statement_list * cleanup (void) { return m_cleanup_code; }
comment_list * leading_comment (void) { return m_lead_comm; }
comment_list * middle_comment (void) { return m_mid_comm; }
comment_list * trailing_comment (void) { return m_trail_comm; }
void accept (tree_walker& tw)
{
tw.visit_unwind_protect_command (*this);
}
private:
// The first body of code to attempt to execute.
tree_statement_list *m_unwind_protect_code;
// The body of code to execute no matter what happens in the first
// body of code.
tree_statement_list *m_cleanup_code;
// Comment preceding UNWIND_PROTECT token.
comment_list *m_lead_comm;
// Comment preceding UNWIND_PROTECT_CLEANUP token.
comment_list *m_mid_comm;
// Comment preceding END_UNWIND_PROTECT token.
comment_list *m_trail_comm;
};
}
#endif
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