/usr/include/octave-4.2.2/octave/pt-assign.h is in liboctave-dev 4.2.2-1ubuntu1.
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) 1996-2017 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_assign_h)
#define octave_pt_assign_h 1
#include "octave-config.h"
#include <iosfwd>
#include <string>
class tree_argument_list;
class tree_walker;
class octave_value;
class octave_value_list;
class octave_lvalue;
#include "ov.h"
#include "pt-exp.h"
#include "symtab.h"
// Simple assignment expressions.
class
tree_simple_assignment : public tree_expression
{
public:
tree_simple_assignment (bool plhs = false, int l = -1, int c = -1,
octave_value::assign_op t = octave_value::op_asn_eq)
: tree_expression (l, c), lhs (0), rhs (0), preserve (plhs), ans_ass (),
etype (t) { }
tree_simple_assignment (tree_expression *le, tree_expression *re,
bool plhs = false, int l = -1, int c = -1,
octave_value::assign_op t = octave_value::op_asn_eq);
~tree_simple_assignment (void);
bool has_magic_end (void) const { return (rhs && rhs->has_magic_end ()); }
bool rvalue_ok (void) const { return true; }
octave_value rvalue1 (int nargout = 1);
octave_value_list rvalue (int nargout);
bool is_assignment_expression (void) const { return true; }
std::string oper (void) const;
tree_expression *left_hand_side (void) { return lhs; }
tree_expression *right_hand_side (void) { return rhs; }
tree_expression *dup (symbol_table::scope_id scope,
symbol_table::context_id context) const;
void accept (tree_walker& tw);
octave_value::assign_op op_type (void) const { return etype; }
private:
void do_assign (octave_lvalue& ult, const octave_value_list& args,
const octave_value& rhs_val);
void do_assign (octave_lvalue& ult, const octave_value& rhs_val);
// The left hand side of the assignment.
tree_expression *lhs;
// The right hand side of the assignment.
tree_expression *rhs;
// True if we should not delete the lhs.
bool preserve;
// True if this is an assignment to the automatic variable ans.
bool ans_ass;
// The type of the expression.
octave_value::assign_op etype;
// No copying!
tree_simple_assignment (const tree_simple_assignment&);
tree_simple_assignment& operator = (const tree_simple_assignment&);
};
// Multi-valued assignment expressions.
class
tree_multi_assignment : public tree_expression
{
public:
tree_multi_assignment (bool plhs = false, int l = -1, int c = -1)
: tree_expression (l, c), lhs (0), rhs (0), preserve (plhs) { }
tree_multi_assignment (tree_argument_list *lst, tree_expression *r,
bool plhs = false, int l = -1, int c = -1);
~tree_multi_assignment (void);
bool has_magic_end (void) const { return (rhs && rhs->has_magic_end ()); }
bool is_assignment_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;
tree_argument_list *left_hand_side (void) { return lhs; }
tree_expression *right_hand_side (void) { return rhs; }
tree_expression *dup (symbol_table::scope_id scope,
symbol_table::context_id context) const;
void accept (tree_walker& tw);
octave_value::assign_op op_type (void) const
{ return octave_value::op_asn_eq; }
private:
// The left hand side of the assignment.
tree_argument_list *lhs;
// The right hand side of the assignment.
tree_expression *rhs;
// True if we should not delete the lhs.
bool preserve;
// No copying!
tree_multi_assignment (const tree_multi_assignment&);
tree_multi_assignment& operator = (const tree_multi_assignment&);
};
#endif
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