Mercurial > octave
annotate libinterp/parse-tree/pt-binop.h @ 30565:83f9f8bda883
maint: Merge stable to default.
author | John W. Eaton <jwe@octave.org> |
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date | Tue, 28 Dec 2021 18:59:33 -0500 |
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children | c3ed2ad87aca |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1996-2022 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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26 #if ! defined (octave_pt_binop_h) |
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27 #define octave_pt_binop_h 1 |
2980 | 28 |
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29 #include "octave-config.h" |
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30 |
2980 | 31 #include <string> |
32 | |
33 class octave_value; | |
34 class octave_value_list; | |
35 | |
36 #include "ov.h" | |
37 #include "pt-exp.h" | |
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38 #include "pt-walk.h" |
2980 | 39 |
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40 namespace octave |
2980 | 41 { |
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42 class symbol_scope; |
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43 |
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44 // Binary expressions. |
2980 | 45 |
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46 class tree_binary_expression : public tree_expression |
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47 { |
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48 public: |
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49 |
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50 tree_binary_expression (int l = -1, int c = -1, |
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51 octave_value::binary_op t |
10313 | 52 = octave_value::unknown_binary_op) |
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53 : tree_expression (l, c), m_lhs (nullptr), m_rhs (nullptr), m_etype (t), |
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54 m_eligible_for_braindead_shortcircuit (false), |
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55 m_braindead_shortcircuit_warning_issued (false) { } |
2980 | 56 |
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57 tree_binary_expression (tree_expression *a, tree_expression *b, |
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58 int l = -1, int c = -1, |
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59 octave_value::binary_op t |
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60 = octave_value::unknown_binary_op) |
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61 : tree_expression (l, c), m_lhs (a), m_rhs (b), m_etype (t), |
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62 m_eligible_for_braindead_shortcircuit (false), |
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63 m_braindead_shortcircuit_warning_issued (false) { } |
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64 |
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65 // No copying! |
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66 |
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67 tree_binary_expression (const tree_binary_expression&) = delete; |
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68 |
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69 tree_binary_expression& operator = (const tree_binary_expression&) = delete; |
2980 | 70 |
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71 ~tree_binary_expression (void) |
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72 { |
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73 delete m_lhs; |
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74 delete m_rhs; |
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75 } |
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76 |
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77 void mark_braindead_shortcircuit (void) |
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78 { |
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79 if (m_etype == octave_value::op_el_and |
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80 || m_etype == octave_value::op_el_or) |
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81 { |
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82 m_eligible_for_braindead_shortcircuit = true; |
4267 | 83 |
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84 m_lhs->mark_braindead_shortcircuit (); |
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85 m_rhs->mark_braindead_shortcircuit (); |
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86 } |
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87 } |
2980 | 88 |
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89 bool is_binary_expression (void) const { return true; } |
2980 | 90 |
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91 bool rvalue_ok (void) const { return true; } |
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93 std::string oper (void) const; |
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94 |
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95 octave_value::binary_op op_type (void) const { return m_etype; } |
2980 | 96 |
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97 tree_expression * lhs (void) { return m_lhs; } |
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98 tree_expression * rhs (void) { return m_rhs; } |
2980 | 99 |
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100 bool is_eligible_for_braindead_shortcircuit (void) const |
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101 { |
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102 return m_eligible_for_braindead_shortcircuit; |
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103 } |
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104 |
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105 tree_expression * dup (symbol_scope& scope) const; |
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107 octave_value evaluate (tree_evaluator&, int nargout = 1); |
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108 |
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109 octave_value_list evaluate_n (tree_evaluator& tw, int nargout = 1) |
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110 { |
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111 return ovl (evaluate (tw, nargout)); |
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112 } |
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113 |
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114 void accept (tree_walker& tw) |
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115 { |
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116 tw.visit_binary_expression (*this); |
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117 } |
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119 std::string profiler_name (void) const { return "binary " + oper (); } |
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120 |
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121 void matlab_style_short_circuit_warning (const char *op); |
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122 |
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123 protected: |
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124 |
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125 // The operands for the expression. |
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126 tree_expression *m_lhs; |
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127 tree_expression *m_rhs; |
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128 |
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129 private: |
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131 // The type of the expression. |
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132 octave_value::binary_op m_etype; |
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134 // TRUE if this is an | or & expression in the condition of an IF |
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135 // or WHILE statement. |
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136 bool m_eligible_for_braindead_shortcircuit; |
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138 // TRUE if we have already issued a warning about short circuiting |
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139 // for this operator. |
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140 bool m_braindead_shortcircuit_warning_issued; |
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141 }; |
2980 | 142 |
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143 // Boolean expressions. |
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144 |
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145 class tree_boolean_expression : public tree_binary_expression |
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146 { |
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147 public: |
2980 | 148 |
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149 enum type |
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150 { |
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151 unknown, |
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152 bool_and, |
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153 bool_or |
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154 }; |
2980 | 155 |
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156 tree_boolean_expression (int l = -1, int c = -1, type t = unknown) |
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157 : tree_binary_expression (l, c), m_etype (t) { } |
2980 | 158 |
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159 tree_boolean_expression (tree_expression *a, tree_expression *b, |
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160 int l = -1, int c = -1, type t = unknown) |
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161 : tree_binary_expression (a, b, l, c), m_etype (t) { } |
4023 | 162 |
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163 // No copying! |
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164 |
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165 tree_boolean_expression (const tree_boolean_expression&) = delete; |
2980 | 166 |
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167 tree_boolean_expression& operator = (const tree_boolean_expression&) = delete; |
2980 | 168 |
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169 ~tree_boolean_expression (void) = default; |
2980 | 170 |
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171 bool is_boolean_expression (void) const { return true; } |
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173 bool rvalue_ok (void) const { return true; } |
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174 |
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175 std::string oper (void) const; |
5861 | 176 |
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177 type op_type (void) const { return m_etype; } |
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178 |
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179 tree_expression * dup (symbol_scope& scope) const; |
2980 | 180 |
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181 octave_value evaluate (tree_evaluator&, int nargout = 1); |
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182 |
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183 octave_value_list evaluate_n (tree_evaluator& tw, int nargout = 1) |
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184 { |
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185 return ovl (evaluate (tw, nargout)); |
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186 } |
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187 |
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188 void accept (tree_walker& tw) |
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189 { |
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190 tw.visit_boolean_expression (*this); |
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191 } |
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192 |
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193 private: |
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195 // The type of the expression. |
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196 type m_etype; |
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197 }; |
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198 } |
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2980 | 200 #endif |