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annotate libinterp/parse-tree/pt-cbinop.h @ 29358:0a5b15007766 stable

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021.
author John W. Eaton <jwe@octave.org>
date Wed, 10 Feb 2021 09:52:15 -0500
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2008-2021 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 (octave_pt_cbinop_h)
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27 #define octave_pt_cbinop_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <string>
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32
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33 class octave_value;
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34 class octave_value_list;
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35
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36 #include "ov.h"
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37 #include "pt-binop.h"
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38 #include "pt-walk.h"
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39
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40 namespace octave
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41 {
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42 // Binary expressions that can be reduced to compound operations
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43
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44 class tree_compound_binary_expression : public tree_binary_expression
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45 {
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46 public:
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47
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48 tree_compound_binary_expression (tree_expression *a, tree_expression *b,
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49 int l, int c,
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50 octave_value::binary_op t,
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51 tree_expression *ca, tree_expression *cb,
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52 octave_value::compound_binary_op ct)
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53 : tree_binary_expression (a, b, l, c, t), m_lhs (ca), m_rhs (cb),
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54 m_etype (ct)
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55 { }
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56
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57 octave_value::compound_binary_op cop_type (void) const { return m_etype; }
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58
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59 bool rvalue_ok (void) const { return true; }
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60
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61 tree_expression * clhs (void) { return m_lhs; }
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62 tree_expression * crhs (void) { return m_rhs; }
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63
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64 octave_value evaluate (tree_evaluator&, int nargout = 1);
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65
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66 octave_value_list evaluate_n (tree_evaluator& tw, int nargout = 1)
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67 {
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68 return ovl (evaluate (tw, nargout));
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69 }
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71 void accept (tree_walker& tw)
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72 {
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73 tw.visit_compound_binary_expression (*this);
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74 }
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75
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76 private:
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77
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78 tree_expression *m_lhs;
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79 tree_expression *m_rhs;
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80
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81 octave_value::compound_binary_op m_etype;
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82
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83 // No copying!
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84
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85 tree_compound_binary_expression (const tree_compound_binary_expression&) = delete;
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86
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87 tree_compound_binary_expression&
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88 operator = (const tree_compound_binary_expression&) = delete;
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89 };
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90
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91 // a "virtual constructor"
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92
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93 tree_binary_expression *
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94 maybe_compound_binary_expression (tree_expression *a, tree_expression *b,
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95 int l = -1, int c = -1,
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96 octave_value::binary_op t
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97 = octave_value::unknown_binary_op);
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98 }
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99
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100 #endif