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annotate libinterp/parse-tree/pt-unop.cc @ 20830:b65888ec820e draft default tip gccjit

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dmalcom gcc jit import
author Stefan Mahr <dac922@gmx.de>
date Fri, 27 Feb 2015 16:59:36 +0100
parents f90c8372b7ba
children
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1 /*
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2
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3 Copyright (C) 1996-2015 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 the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 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 WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 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 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include "error.h"
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28 #include "oct-obj.h"
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29 #include "oct-lvalue.h"
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30 #include "ov.h"
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31 #include "profiler.h"
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32 #include "pt-bp.h"
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33 #include "pt-unop.h"
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34 #include "pt-walk.h"
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35
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36 // Unary expressions.
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37
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38 std::string
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39 tree_unary_expression::oper (void) const
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40 {
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41 return octave_value::unary_op_as_string (etype);
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42 }
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43
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44 // Prefix expressions.
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45
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46 octave_value_list
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47 tree_prefix_expression::rvalue (int nargout)
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48 {
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49 octave_value_list retval;
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50
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51 if (nargout > 1)
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52 error ("prefix operator '%s': invalid number of output arguments",
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53 oper () . c_str ());
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54 else
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55 retval = rvalue1 (nargout);
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56
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57 return retval;
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58 }
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59
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60 octave_value
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61 tree_prefix_expression::rvalue1 (int)
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62 {
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63 octave_value retval;
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64
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65 if (op)
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66 {
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67 if (etype == octave_value::op_incr || etype == octave_value::op_decr)
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68 {
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69 octave_lvalue ref = op->lvalue ();
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70
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71 BEGIN_PROFILER_BLOCK (tree_prefix_expression)
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72
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73 ref.do_unary_op (etype);
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74
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75 retval = ref.value ();
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76
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77 END_PROFILER_BLOCK
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78 }
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79 else
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80 {
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81 octave_value val = op->rvalue1 ();
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82
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83 if (val.is_defined ())
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84 {
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85 BEGIN_PROFILER_BLOCK (tree_prefix_expression)
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86
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87 // Attempt to do the operation in-place if it is unshared
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88 // (a temporary expression).
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89 if (val.get_count () == 1)
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90 retval = val.do_non_const_unary_op (etype);
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91 else
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92 retval = ::do_unary_op (etype, val);
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93
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94 END_PROFILER_BLOCK
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95 }
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96 }
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97 }
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98
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99 return retval;
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100 }
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101
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102 tree_expression *
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103 tree_prefix_expression::dup (symbol_table::scope_id scope,
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104 symbol_table::context_id context) const
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105 {
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106 tree_prefix_expression *new_pe
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107 = new tree_prefix_expression (op ? op->dup (scope, context) : 0,
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108 line (), column (), etype);
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109
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110 new_pe->copy_base (*this);
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111
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112 return new_pe;
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113 }
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114
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115 void
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116 tree_prefix_expression::accept (tree_walker& tw)
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117 {
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118 tw.visit_prefix_expression (*this);
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119 }
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120
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121 // Postfix expressions.
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122
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123 octave_value_list
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124 tree_postfix_expression::rvalue (int nargout)
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125 {
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126 octave_value_list retval;
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127
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128 if (nargout > 1)
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129 error ("postfix operator '%s': invalid number of output arguments",
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130 oper () . c_str ());
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131 else
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132 retval = rvalue1 (nargout);
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133
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134 return retval;
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135 }
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136
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137 octave_value
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138 tree_postfix_expression::rvalue1 (int)
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139 {
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140 octave_value retval;
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141
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142 if (op)
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143 {
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144 if (etype == octave_value::op_incr || etype == octave_value::op_decr)
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145 {
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146 octave_lvalue ref = op->lvalue ();
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147
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148 retval = ref.value ();
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149
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150 BEGIN_PROFILER_BLOCK (tree_postfix_expression)
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151
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152 ref.do_unary_op (etype);
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153
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154 END_PROFILER_BLOCK
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155 }
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156 else
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157 {
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158 octave_value val = op->rvalue1 ();
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159
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160 if (val.is_defined ())
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161 {
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162 BEGIN_PROFILER_BLOCK (tree_postfix_expression)
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163
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164 retval = ::do_unary_op (etype, val);
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165
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166 END_PROFILER_BLOCK
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167 }
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168 }
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169 }
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170
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171 return retval;
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172 }
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173
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174 tree_expression *
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175 tree_postfix_expression::dup (symbol_table::scope_id scope,
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176 symbol_table::context_id context) const
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177 {
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178 tree_postfix_expression *new_pe
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179 = new tree_postfix_expression (op ? op->dup (scope, context) : 0,
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180 line (), column (), etype);
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181
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182 new_pe->copy_base (*this);
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183
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184 return new_pe;
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185 }
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186
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187 void
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188 tree_postfix_expression::accept (tree_walker& tw)
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189 {
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190 tw.visit_postfix_expression (*this);
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191 }