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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 "oct-shlib.h" |
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28 |
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29 #include <defaults.h> |
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30 #include "dynamic-ld.h" |
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31 #include "error.h" |
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32 #include "oct-obj.h" |
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33 #include "ov-mex-fcn.h" |
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34 #include "ov.h" |
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35 #include "toplev.h" |
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36 #include "unwind-prot.h" |
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37 |
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38 DEFINE_OCTAVE_ALLOCATOR (octave_mex_function); |
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39 |
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40 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_mex_function, |
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41 "mex function", "mex function"); |
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42 |
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43 octave_mex_function::octave_mex_function |
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44 (void *fptr, bool fmex, const octave_shlib& shl, |
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45 const std::string& nm) |
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46 : octave_function (nm), mex_fcn_ptr (fptr), exit_fcn_ptr (0), |
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47 have_fmex (fmex), sh_lib (shl) |
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48 { |
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49 mark_fcn_file_up_to_date (time_parsed ()); |
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50 |
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51 std::string file_name = fcn_file_name (); |
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52 |
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53 system_fcn_file |
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54 = (! file_name.empty () |
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55 && Voct_file_dir == file_name.substr (0, Voct_file_dir.length ())); |
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56 } |
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57 |
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58 octave_mex_function::~octave_mex_function (void) |
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59 { |
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60 if (exit_fcn_ptr) |
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61 (*exit_fcn_ptr) (); |
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62 |
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63 octave_dynamic_loader::remove (my_name, sh_lib); |
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64 } |
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65 |
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66 std::string |
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67 octave_mex_function::fcn_file_name (void) const |
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68 { |
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69 return sh_lib.file_name (); |
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70 } |
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71 |
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72 octave_time |
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73 octave_mex_function::time_parsed (void) const |
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74 { |
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75 return sh_lib.time_loaded (); |
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76 } |
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77 |
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78 octave_value_list |
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79 octave_mex_function::subsref (const std::string& type, |
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80 const std::list<octave_value_list>& idx, |
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81 int nargout) |
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82 { |
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83 octave_value_list retval; |
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84 |
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85 switch (type[0]) |
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86 { |
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87 case '(': |
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88 { |
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89 int tmp_nargout = (type.length () > 1 && nargout == 0) ? 1 : nargout; |
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90 |
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91 retval = do_multi_index_op (tmp_nargout, idx.front ()); |
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92 } |
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93 break; |
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94 |
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95 case '{': |
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96 case '.': |
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97 { |
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98 std::string nm = type_name (); |
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99 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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100 } |
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101 break; |
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102 |
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103 default: |
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104 panic_impossible (); |
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105 } |
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106 |
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107 // FIXME -- perhaps there should be an |
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108 // octave_value_list::next_subsref member function? See also |
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109 // octave_user_function::subsref. |
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110 // |
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111 // FIXME -- Note that if a function call returns multiple |
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112 // values, and there is further indexing to perform, then we are |
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113 // ignoring all but the first value. Is this really what we want to |
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114 // do? If it is not, then what should happen for stat("file").size, |
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115 // for exmaple? |
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116 |
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117 if (idx.size () > 1) |
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118 retval = retval(0).next_subsref (nargout, type, idx); |
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119 |
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120 return retval; |
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121 } |
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122 |
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123 extern octave_value_list |
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124 call_mex (bool have_fmex, void *f, const octave_value_list& args, |
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125 int nargout, octave_mex_function *curr_mex_fcn); |
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126 |
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127 octave_value_list |
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128 octave_mex_function::do_multi_index_op (int nargout, |
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129 const octave_value_list& args) |
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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 (error_state) |
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134 return retval; |
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135 |
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136 if (args.has_magic_colon ()) |
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137 ::error ("invalid use of colon in function argument list"); |
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138 else |
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139 { |
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140 unwind_protect::begin_frame ("mex_func_eval"); |
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141 |
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142 octave_call_stack::push (this); |
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143 |
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144 unwind_protect::add (octave_call_stack::unwind_pop, 0); |
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145 |
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146 retval = call_mex (have_fmex, mex_fcn_ptr, args, nargout, this); |
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147 |
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148 unwind_protect::run_frame ("mex_func_eval"); |
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149 } |
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150 |
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151 return retval; |
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152 } |
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153 |
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154 /* |
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155 ;;; Local Variables: *** |
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156 ;;; mode: C++ *** |
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157 ;;; End: *** |
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158 */ |
