/usr/include/octave-3.8.1/octave/pt-binop.h is in liboctave-dev 3.8.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 1996-2013 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 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
<http://www.gnu.org/licenses/>.
*/
#if !defined (octave_pt_binop_h)
#define octave_pt_binop_h 1
#include <string>
class tree_walker;
class octave_value;
class octave_value_list;
class octave_lvalue;
#include "ov.h"
#include "pt-exp.h"
#include "symtab.h"
// Binary expressions.
class
tree_binary_expression : public tree_expression
{
public:
tree_binary_expression (int l = -1, int c = -1,
octave_value::binary_op t
= octave_value::unknown_binary_op)
: tree_expression (l, c), op_lhs (0), op_rhs (0), etype (t),
eligible_for_braindead_shortcircuit (false) { }
tree_binary_expression (tree_expression *a, tree_expression *b,
int l = -1, int c = -1,
octave_value::binary_op t
= octave_value::unknown_binary_op)
: tree_expression (l, c), op_lhs (a), op_rhs (b), etype (t),
eligible_for_braindead_shortcircuit (false) { }
~tree_binary_expression (void)
{
delete op_lhs;
delete op_rhs;
}
void mark_braindead_shortcircuit (const std::string& file)
{
if (etype == octave_value::op_el_and || etype == octave_value::op_el_or)
{
if (file.empty ())
warning_with_id ("Octave:possible-matlab-short-circuit-operator",
"possible Matlab-style short-circuit operator at line %d, column %d",
line (), column ());
else
warning_with_id ("Octave:possible-matlab-short-circuit-operator",
"%s: possible Matlab-style short-circuit operator at line %d, column %d",
file.c_str (), line (), column ());
eligible_for_braindead_shortcircuit = true;
op_lhs->mark_braindead_shortcircuit (file);
op_rhs->mark_braindead_shortcircuit (file);
}
}
bool has_magic_end (void) const
{
return ((op_lhs && op_lhs->has_magic_end ())
|| (op_rhs && op_rhs->has_magic_end ()));
}
bool is_binary_expression (void) const { return true; }
bool rvalue_ok (void) const { return true; }
octave_value rvalue1 (int nargout = 1);
octave_value_list rvalue (int nargout);
std::string oper (void) const;
octave_value::binary_op op_type (void) const { return etype; }
tree_expression *lhs (void) { return op_lhs; }
tree_expression *rhs (void) { return op_rhs; }
tree_expression *dup (symbol_table::scope_id scope,
symbol_table::context_id context) const;
void accept (tree_walker& tw);
protected:
// The operands for the expression.
tree_expression *op_lhs;
tree_expression *op_rhs;
private:
// The type of the expression.
octave_value::binary_op etype;
// TRUE if this is an | or & expression in the condition of an IF
// or WHILE statement.
bool eligible_for_braindead_shortcircuit;
// No copying!
tree_binary_expression (const tree_binary_expression&);
tree_binary_expression& operator = (const tree_binary_expression&);
};
// Boolean expressions.
class
tree_boolean_expression : public tree_binary_expression
{
public:
enum type
{
unknown,
bool_and,
bool_or
};
tree_boolean_expression (int l = -1, int c = -1, type t = unknown)
: tree_binary_expression (l, c), etype (t) { }
tree_boolean_expression (tree_expression *a, tree_expression *b,
int l = -1, int c = -1, type t = unknown)
: tree_binary_expression (a, b, l, c), etype (t) { }
~tree_boolean_expression (void) { }
bool is_boolean_expression (void) const { return true; }
bool rvalue_ok (void) const { return true; }
octave_value rvalue1 (int nargout = 1);
octave_value_list rvalue (int nargout);
std::string oper (void) const;
type op_type (void) const { return etype; }
tree_expression *dup (symbol_table::scope_id scope,
symbol_table::context_id context) const;
private:
// The type of the expression.
type etype;
// No copying!
tree_boolean_expression (const tree_boolean_expression&);
tree_boolean_expression& operator = (const tree_boolean_expression&);
};
#endif
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