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1 /* |
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2 |
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3 Copyright (C) 2003 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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <iostream> |
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29 |
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30 #include "error.h" |
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31 #include "oct-obj.h" |
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32 #include "ov-fcn-handle.h" |
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33 #include "pt-fcn-handle.h" |
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34 #include "pager.h" |
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35 #include "pt-walk.h" |
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36 #include "variables.h" |
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37 |
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38 void |
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39 tree_fcn_handle::print (std::ostream& os, bool pr_as_read_syntax, |
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40 bool pr_orig_text) |
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41 { |
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42 print_raw (os, pr_as_read_syntax, pr_orig_text); |
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43 } |
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44 |
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45 void |
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46 tree_fcn_handle::print_raw (std::ostream& os, bool pr_as_read_syntax, |
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47 bool pr_orig_text) |
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48 { |
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49 os << ((pr_as_read_syntax || pr_orig_text) ? "@" : "") << nm; |
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50 } |
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51 |
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52 octave_value |
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53 tree_fcn_handle::rvalue (void) |
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54 { |
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55 MAYBE_DO_BREAKPOINT; |
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56 |
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57 return make_fcn_handle (nm); |
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58 } |
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59 |
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60 |
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61 octave_value_list |
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62 tree_fcn_handle::rvalue (int nargout) |
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63 { |
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64 octave_value_list retval; |
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65 |
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66 if (nargout > 1) |
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67 error ("invalid number of output arguments for function handle expression"); |
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68 else |
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69 retval = rvalue (); |
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70 |
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71 return retval; |
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72 } |
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73 |
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74 tree_expression * |
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75 tree_fcn_handle::dup (symbol_table *sym_tab) |
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76 { |
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77 tree_fcn_handle *new_fh = new tree_fcn_handle (nm, line (), column ()); |
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78 |
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79 new_fh->copy_base (*this); |
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80 |
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81 return new_fh; |
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82 } |
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83 |
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84 void |
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85 tree_fcn_handle::accept (tree_walker& tw) |
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86 { |
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87 tw.visit_fcn_handle (*this); |
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88 } |
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89 |
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90 tree_anon_fcn_handle::~tree_anon_fcn_handle (void) |
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91 { |
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92 delete param_list; |
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93 delete cmd_list; |
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94 delete ret_list; |
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95 delete sym_tab; |
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96 } |
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97 |
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98 octave_value |
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99 tree_anon_fcn_handle::rvalue (void) |
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100 { |
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101 MAYBE_DO_BREAKPOINT; |
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102 |
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103 symbol_table *new_sym_tab = sym_tab ? sym_tab->dup () : 0; |
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104 |
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105 if (new_sym_tab) |
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106 new_sym_tab->inherit (curr_sym_tab); |
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107 |
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108 tree_parameter_list *new_param_list |
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109 = param_list ? param_list->dup (new_sym_tab) : 0; |
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110 |
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111 tree_statement_list *new_cmd_list |
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112 = cmd_list ? cmd_list->dup (new_sym_tab) : 0; |
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113 |
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114 tree_parameter_list *new_ret_list |
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115 = ret_list ? ret_list->dup (new_sym_tab) : 0; |
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116 |
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117 octave_user_function *uf |
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118 = new octave_user_function (new_param_list, new_ret_list, |
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119 new_cmd_list, new_sym_tab); |
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120 |
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121 octave_value fcn (uf); |
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122 |
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123 octave_value fh (new octave_fcn_handle (fcn, "@<anonymous>")); |
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124 |
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125 return fh; |
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126 } |
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127 |
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128 octave_value_list |
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129 tree_anon_fcn_handle::rvalue (int nargout) |
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130 { |
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131 octave_value_list retval; |
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132 |
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133 if (nargout > 1) |
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134 error ("invalid number of output arguments for anonymous function handle expression"); |
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135 else |
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136 retval = rvalue (); |
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137 |
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138 return retval; |
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139 } |
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140 |
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141 tree_expression * |
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142 tree_anon_fcn_handle::dup (symbol_table *st) |
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143 { |
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144 symbol_table *new_sym_tab = sym_tab ? sym_tab->dup () : 0; |
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145 |
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146 if (new_sym_tab) |
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147 new_sym_tab->inherit (st); |
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148 |
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149 tree_anon_fcn_handle *new_afh |
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150 = new tree_anon_fcn_handle (param_list ? param_list->dup (new_sym_tab) : 0, |
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151 ret_list ? ret_list->dup (new_sym_tab) : 0, |
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152 cmd_list ? cmd_list->dup (new_sym_tab) : 0, |
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153 new_sym_tab, line (), column ()); |
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154 |
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155 new_afh->copy_base (*this); |
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156 |
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157 return new_afh; |
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158 } |
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159 |
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160 void |
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161 tree_anon_fcn_handle::accept (tree_walker& tw) |
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162 { |
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163 tw.visit_anon_fcn_handle (*this); |
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164 } |
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165 |
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166 |
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167 |
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168 /* |
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169 ;;; Local Variables: *** |
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170 ;;; mode: C++ *** |
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171 ;;; End: *** |
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172 */ |
