annotate libinterp/parse-tree/pt-unop.h @ 23220:092078913d54

maint: Merge stable to default.
author John W. Eaton <jwe@octave.org>
date Wed, 22 Feb 2017 12:58:07 -0500
parents ef4d915df748 3ac9f9ecfae5
children 50fc8edb007b
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1 /*
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2
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3 Copyright (C) 1996-2017 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3 of the License, or
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10 (at your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (octave_pt_unop_h)
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24 #define octave_pt_unop_h 1
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25
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26 #include "octave-config.h"
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27
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28 #include <string>
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29
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30 class octave_value;
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31 class octave_value_list;
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32 class octave_lvalue;
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33
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34 #include "pt-exp.h"
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35 #include "symtab.h"
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36
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37 namespace octave
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38 {
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39 class tree_walker;
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40
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41 // Unary expressions.
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42
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43 class tree_unary_expression : public tree_expression
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44 {
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45 public:
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46
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47 tree_unary_expression (int l = -1, int c = -1,
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48 octave_value::unary_op t
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49 = octave_value::unknown_unary_op)
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50 : tree_expression (l, c), op (0), etype (t) { }
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52 tree_unary_expression (tree_expression *e, int l = -1, int c = -1,
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53 octave_value::unary_op t
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54 = octave_value::unknown_unary_op)
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55 : tree_expression (l, c), op (e), etype (t) { }
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57 // No copying!
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58
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59 tree_unary_expression (const tree_unary_expression&) = delete;
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61 tree_unary_expression& operator = (const tree_unary_expression&) = delete;
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62
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63 ~tree_unary_expression (void) { delete op; }
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64
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65 bool is_unary_expression (void) const { return true; }
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66
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67 bool has_magic_end (void) const { return (op && op->has_magic_end ()); }
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68
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69 tree_expression *operand (void) { return op; }
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71 std::string oper (void) const;
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72
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73 octave_value::unary_op op_type (void) const { return etype; }
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74
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75 protected:
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76
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77 // The operand for the expression.
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78 tree_expression *op;
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79
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80 // The type of the expression.
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81 octave_value::unary_op etype;
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82 };
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83
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84 // Prefix expressions.
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85
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86 class tree_prefix_expression : public tree_unary_expression
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87 {
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88 public:
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89
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90 tree_prefix_expression (int l = -1, int c = -1)
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91 : tree_unary_expression (l, c, octave_value::unknown_unary_op) { }
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93 tree_prefix_expression (tree_expression *e, int l = -1, int c = -1,
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94 octave_value::unary_op t
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95 = octave_value::unknown_unary_op)
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96 : tree_unary_expression (e, l, c, t) { }
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98 // No copying!
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100 tree_prefix_expression (const tree_prefix_expression&) = delete;
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101
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102 tree_prefix_expression& operator = (const tree_prefix_expression&) = delete;
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103
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104 ~tree_prefix_expression (void) = default;
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105
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106 bool rvalue_ok (void) const { return true; }
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107
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108 octave_value rvalue1 (int nargout = 1);
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110 octave_value_list rvalue (int nargout);
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112 tree_expression *dup (symbol_table::scope_id scope,
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113 symbol_table::context_id context) const;
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115 void accept (tree_walker& tw);
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116
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117 std::string profiler_name (void) const { return "prefix " + oper (); }
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118 };
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119
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120 // Postfix expressions.
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121
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122 class tree_postfix_expression : public tree_unary_expression
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123 {
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124 public:
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125
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126 tree_postfix_expression (int l = -1, int c = -1)
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127 : tree_unary_expression (l, c, octave_value::unknown_unary_op) { }
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128
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129 tree_postfix_expression (tree_expression *e, int l = -1, int c = -1,
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130 octave_value::unary_op t
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131 = octave_value::unknown_unary_op)
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132 : tree_unary_expression (e, l, c, t) { }
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133
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134 // No copying!
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135
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136 tree_postfix_expression (const tree_postfix_expression&) = delete;
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137
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138 tree_postfix_expression& operator = (const tree_postfix_expression&) = delete;
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139
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140 ~tree_postfix_expression (void) = default;
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141
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142 bool rvalue_ok (void) const { return true; }
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143
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144 octave_value rvalue1 (int nargout = 1);
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145
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146 octave_value_list rvalue (int nargout);
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147
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148 tree_expression *dup (symbol_table::scope_id scope,
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149 symbol_table::context_id context) const;
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150
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151 void accept (tree_walker& tw);
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152
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153 std::string profiler_name (void) const { return "postfix " + oper (); }
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154 };
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155 }
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156
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157 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS)
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158
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159 OCTAVE_DEPRECATED ("use 'octave::tree_unary_expression' instead")
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160 typedef octave::tree_unary_expression tree_unary_expression;
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161
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162 OCTAVE_DEPRECATED ("use 'octave::tree_prefix_expression' instead")
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163 typedef octave::tree_prefix_expression tree_prefix_expression;
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164
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165 OCTAVE_DEPRECATED ("use 'octave::tree_postfix_expression' instead")
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166 typedef octave::tree_postfix_expression tree_postfix_expression;
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167
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168 #endif
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169
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170 #endif