annotate libinterp/parse-tree/oct-lvalue.cc @ 28426:9a3deb17b4ea stable

use shared_ptr for stack frames in call stack and for accesss and static links * call-stack.h, call-stack.cc: Use std::shared_ptr<stack_frame> instead of bare pointer for elements of call stack. Change all uses. * stack-frame.h, stack-frame.cc (stack_frame::static_link, stack_frame::access_link): Use std::shared_ptr<stack_frame> instead of bare pointer. Change all uses. (stack_frame::workspace): New function. * ov-fcn-handle.h, ov-fcn-handle.cc (octave_fcn_handle::m_closure_frames): Now a std::shared_ptr<stack_frame> object instead of a list of copied stack frames. Change all uses. (octave_fcn_handle::push_closure_context): Simply store std::shared_ptr to current stack frame. (octave_fcn_handle::workspace): Call stack_frame::workspace to get workspace info when we have closure frames.
author John W. Eaton <jwe@octave.org>
date Sat, 25 Apr 2020 13:17:11 -0400
parents 56c209ff0a08
children 70cdf8de553d 3719f5d452d4
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2020 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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30 #include "error.h"
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31 #include "ovl.h"
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32 #include "oct-lvalue.h"
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33 #include "ov.h"
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34
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35 namespace octave
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36 {
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37 bool octave_lvalue::is_defined (void) const
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38 {
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39 return ! is_black_hole () && m_frame->is_defined (m_sym);
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40 }
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41
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42 bool octave_lvalue::is_undefined (void) const
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43 {
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44 return ! is_defined ();
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45 }
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46
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47 void octave_lvalue::define (const octave_value& v)
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48 {
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49 m_frame->assign (m_sym, v);
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50 }
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51
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52 void octave_lvalue::assign (octave_value::assign_op op,
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53 const octave_value& rhs)
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54 {
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55 if (! is_black_hole ())
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56 m_frame->assign (op, m_sym, m_type, m_idx, rhs);
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57 }
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58
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59 void octave_lvalue::set_index (const std::string& t,
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60 const std::list<octave_value_list>& i)
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61 {
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62 if (! m_idx.empty ())
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63 error ("invalid index expression in assignment");
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64
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65 m_type = t;
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66 m_idx = i;
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67 }
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68
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69 bool octave_lvalue::index_is_empty (void) const
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70 {
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71 bool retval = false;
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72
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73 if (m_idx.size () == 1)
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74 {
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75 octave_value_list tmp = m_idx.front ();
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76
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77 retval = (tmp.length () == 1 && tmp(0).isempty ());
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78 }
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79
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80 return retval;
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81 }
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82
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83 bool octave_lvalue::index_is_colon (void) const
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84 {
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85 bool retval = false;
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86
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87 if (m_idx.size () == 1)
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88 {
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89 octave_value_list tmp = m_idx.front ();
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90
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91 retval = (tmp.length () == 1 && tmp(0).is_magic_colon ());
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92 }
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93
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94 return retval;
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95 }
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96
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97 void octave_lvalue::do_unary_op (octave_value::unary_op op)
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98 {
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99 if (! is_black_hole ())
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100 m_frame->do_non_const_unary_op (op, m_sym, m_type, m_idx);
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101 }
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102
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103 octave_value octave_lvalue::value (void) const
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104 {
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105 return (is_black_hole ()
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106 ? octave_value () : m_frame->value (m_sym, m_type, m_idx));
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107 }
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108 }