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1 /* |
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2 |
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3 Copyright (C) 2003, 2004, 2005, 2006, 2007 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 <iostream> |
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28 |
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29 #include "error.h" |
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30 #include "oct-obj.h" |
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31 #include "ov-fcn-handle.h" |
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32 #include "pt-fcn-handle.h" |
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33 #include "pager.h" |
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34 #include "pt-walk.h" |
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35 #include "variables.h" |
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36 |
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37 void |
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38 tree_fcn_handle::print (std::ostream& os, bool pr_as_read_syntax, |
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39 bool pr_orig_text) |
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40 { |
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41 print_raw (os, pr_as_read_syntax, pr_orig_text); |
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42 } |
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43 |
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44 void |
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45 tree_fcn_handle::print_raw (std::ostream& os, bool pr_as_read_syntax, |
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46 bool pr_orig_text) |
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47 { |
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48 os << ((pr_as_read_syntax || pr_orig_text) ? "@" : "") << nm; |
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49 } |
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50 |
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51 octave_value |
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52 tree_fcn_handle::rvalue (void) |
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53 { |
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54 MAYBE_DO_BREAKPOINT; |
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55 |
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56 return make_fcn_handle (nm); |
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57 } |
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58 |
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59 |
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60 octave_value_list |
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61 tree_fcn_handle::rvalue (int nargout) |
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62 { |
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63 octave_value_list retval; |
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64 |
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65 if (nargout > 1) |
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66 error ("invalid number of output arguments for function handle expression"); |
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67 else |
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68 retval = rvalue (); |
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69 |
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70 return retval; |
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71 } |
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72 |
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73 tree_expression * |
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74 tree_fcn_handle::dup (symbol_table *) |
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75 { |
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76 tree_fcn_handle *new_fh = new tree_fcn_handle (nm, line (), column ()); |
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77 |
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78 new_fh->copy_base (*this); |
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79 |
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80 return new_fh; |
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81 } |
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82 |
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83 void |
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84 tree_fcn_handle::accept (tree_walker& tw) |
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85 { |
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86 tw.visit_fcn_handle (*this); |
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87 } |
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88 |
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89 octave_value |
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90 tree_anon_fcn_handle::rvalue (void) |
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91 { |
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92 MAYBE_DO_BREAKPOINT; |
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93 |
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94 tree_parameter_list *param_list = fcn.parameter_list (); |
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95 tree_parameter_list *ret_list = fcn.return_list (); |
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96 tree_statement_list *cmd_list = fcn.body (); |
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97 symbol_table *sym_tab = fcn.sym_tab (); |
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98 |
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99 symbol_table *new_sym_tab = sym_tab ? sym_tab->dup () : 0; |
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100 |
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101 if (new_sym_tab) |
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102 new_sym_tab->inherit (curr_sym_tab); |
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103 |
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104 tree_parameter_list *new_param_list |
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105 = param_list ? param_list->dup (new_sym_tab) : 0; |
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106 |
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107 tree_statement_list *new_cmd_list |
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108 = cmd_list ? cmd_list->dup (new_sym_tab) : 0; |
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109 |
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110 tree_parameter_list *new_ret_list |
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111 = ret_list ? ret_list->dup (new_sym_tab) : 0; |
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112 |
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113 octave_user_function *uf |
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114 = new octave_user_function (new_param_list, new_ret_list, |
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115 new_cmd_list, new_sym_tab); |
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116 |
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117 octave_function *curr_fcn = octave_call_stack::current (); |
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118 |
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119 if (curr_fcn) |
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120 uf->stash_parent_fcn_name (curr_fcn->name ()); |
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121 |
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122 uf->mark_as_inline_function (); |
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123 |
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124 octave_value ov_fcn (uf); |
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125 |
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126 octave_value fh (new octave_fcn_handle (ov_fcn, "@<anonymous>")); |
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127 |
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128 return fh; |
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129 } |
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130 |
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131 octave_value_list |
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132 tree_anon_fcn_handle::rvalue (int nargout) |
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133 { |
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134 octave_value_list retval; |
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135 |
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136 if (nargout > 1) |
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137 error ("invalid number of output arguments for anonymous function handle expression"); |
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138 else |
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139 retval = rvalue (); |
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140 |
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141 return retval; |
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142 } |
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143 |
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144 tree_expression * |
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145 tree_anon_fcn_handle::dup (symbol_table *st) |
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146 { |
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147 tree_parameter_list *param_list = fcn.parameter_list (); |
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148 tree_parameter_list *ret_list = fcn.return_list (); |
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149 tree_statement_list *cmd_list = fcn.body (); |
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150 symbol_table *sym_tab = fcn.sym_tab (); |
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151 |
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152 symbol_table *new_sym_tab = sym_tab ? sym_tab->dup () : 0; |
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153 |
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154 if (new_sym_tab) |
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155 new_sym_tab->inherit (st); |
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156 |
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157 tree_anon_fcn_handle *new_afh |
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158 = new tree_anon_fcn_handle (param_list ? param_list->dup (new_sym_tab) : 0, |
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159 ret_list ? ret_list->dup (new_sym_tab) : 0, |
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160 cmd_list ? cmd_list->dup (new_sym_tab) : 0, |
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161 new_sym_tab, line (), column ()); |
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162 |
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163 new_afh->copy_base (*this); |
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164 |
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165 return new_afh; |
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166 } |
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167 |
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168 void |
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169 tree_anon_fcn_handle::accept (tree_walker& tw) |
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170 { |
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171 tw.visit_anon_fcn_handle (*this); |
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172 } |
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173 |
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174 |
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175 |
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176 /* |
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177 ;;; Local Variables: *** |
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178 ;;; mode: C++ *** |
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179 ;;; End: *** |
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180 */ |
