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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 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include "ov-typeinfo.h" |
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32 |
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33 #include "defun.h" |
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34 #include "error.h" |
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35 #include "oct-obj.h" |
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36 |
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37 const int |
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38 octave_value_typeinfo::init_tab_sz (16); |
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39 |
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40 octave_value_typeinfo * |
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41 octave_value_typeinfo::instance (0); |
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42 |
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43 #include <Array.h> |
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44 #include <Array2.h> |
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45 #include <Array3.h> |
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46 |
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47 #include <Array.cc> |
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48 |
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49 INSTANTIATE_ARRAY (unary_op_fcn); |
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50 template class Array2<unary_op_fcn>; |
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51 |
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52 INSTANTIATE_ARRAY (non_const_unary_op_fcn); |
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53 template class Array2<non_const_unary_op_fcn>; |
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54 |
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55 INSTANTIATE_ARRAY (binary_op_fcn); |
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56 template class Array2<binary_op_fcn>; |
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57 template class Array3<binary_op_fcn>; |
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58 |
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59 INSTANTIATE_ARRAY (assign_op_fcn); |
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60 template class Array2<assign_op_fcn>; |
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61 template class Array3<assign_op_fcn>; |
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62 |
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63 INSTANTIATE_ARRAY (type_conv_fcn); |
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64 template class Array2<type_conv_fcn>; |
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65 |
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66 bool |
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67 octave_value_typeinfo::instance_ok (void) |
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68 { |
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69 bool retval = true; |
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70 if (! instance) |
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71 instance = new octave_value_typeinfo (); |
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72 |
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73 if (! instance) |
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74 { |
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75 ::error ("unable to create value type info object!"); |
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76 |
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77 retval = false; |
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78 } |
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79 |
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80 return retval; |
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81 } |
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82 |
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83 int |
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84 octave_value_typeinfo::register_type (const std::string& name) |
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85 { |
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86 return (instance_ok ()) |
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87 ? instance->do_register_type (name) : -1; |
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88 } |
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89 |
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90 bool |
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91 octave_value_typeinfo::register_unary_op (octave_value::unary_op op, |
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92 int t, unary_op_fcn f) |
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93 { |
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94 return (instance_ok ()) |
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95 ? instance->do_register_unary_op (op, t, f) : false; |
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96 } |
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97 |
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98 bool |
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99 octave_value_typeinfo::register_non_const_unary_op (octave_value::unary_op op, |
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100 int t, |
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101 non_const_unary_op_fcn f) |
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102 { |
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103 return (instance_ok ()) |
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104 ? instance->do_register_non_const_unary_op (op, t, f) : false; |
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105 } |
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106 |
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107 bool |
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108 octave_value_typeinfo::register_binary_op (octave_value::binary_op op, |
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109 int t1, int t2, |
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110 binary_op_fcn f) |
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111 { |
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112 return (instance_ok ()) |
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113 ? instance->do_register_binary_op (op, t1, t2, f) : false; |
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114 } |
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115 |
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116 bool |
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117 octave_value_typeinfo::register_assign_op (octave_value::assign_op op, |
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118 int t_lhs, int t_rhs, |
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119 assign_op_fcn f) |
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120 { |
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121 return (instance_ok ()) |
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122 ? instance->do_register_assign_op (op, t_lhs, t_rhs, f) : -1; |
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123 } |
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124 |
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125 bool |
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126 octave_value_typeinfo::register_assignany_op (octave_value::assign_op op, |
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127 int t_lhs, assign_op_fcn f) |
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128 { |
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129 return (instance_ok ()) |
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130 ? instance->do_register_assignany_op (op, t_lhs, f) : -1; |
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131 } |
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132 |
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133 bool |
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134 octave_value_typeinfo::register_pref_assign_conv (int t_lhs, int t_rhs, |
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135 int t_result) |
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136 { |
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137 return (instance_ok ()) |
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138 ? instance->do_register_pref_assign_conv (t_lhs, t_rhs, t_result) : false; |
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139 } |
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140 |
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141 bool |
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142 octave_value_typeinfo::register_widening_op (int t, int t_result, |
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143 type_conv_fcn f) |
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144 { |
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145 return (instance_ok ()) |
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146 ? instance->do_register_widening_op (t, t_result, f) : false; |
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147 } |
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148 |
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149 int |
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150 octave_value_typeinfo::do_register_type (const std::string& name) |
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151 { |
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152 int i = 0; |
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153 |
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154 for (i = 0; i < num_types; i++) |
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155 if (name == types (i)) |
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156 return i; |
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157 |
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158 int len = types.length (); |
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159 |
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160 if (i == len) |
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161 { |
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162 len *= 2; |
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163 |
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164 types.resize_and_fill (len, std::string ()); |
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165 |
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166 unary_ops.resize (static_cast<int> (octave_value::num_unary_ops), |
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167 len, static_cast<unary_op_fcn> (0)); |
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168 |
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169 non_const_unary_ops.resize |
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170 (static_cast<int> (octave_value::num_unary_ops), |
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171 len, static_cast<non_const_unary_op_fcn> (0)); |
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172 |
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173 binary_ops.resize (static_cast<int> (octave_value::num_binary_ops), |
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174 len, len, static_cast<binary_op_fcn> (0)); |
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175 |
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176 assign_ops.resize (static_cast<int> (octave_value::num_assign_ops), |
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177 len, len, static_cast<assign_op_fcn> (0)); |
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178 |
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179 assignany_ops.resize (static_cast<int> (octave_value::num_assign_ops), |
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180 len, static_cast<assign_op_fcn> (0)); |
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181 |
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182 pref_assign_conv.resize (len, len, -1); |
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183 |
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184 widening_ops.resize (len, len, static_cast<type_conv_fcn> (0)); |
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185 } |
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186 |
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187 types (i) = name; |
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188 |
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189 num_types++; |
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190 |
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191 return i; |
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192 } |
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193 |
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194 bool |
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195 octave_value_typeinfo::do_register_unary_op (octave_value::unary_op op, |
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196 int t, unary_op_fcn f) |
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197 { |
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198 if (lookup_unary_op (op, t)) |
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199 { |
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200 std::string op_name = octave_value::unary_op_as_string (op); |
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201 std::string type_name = types(t); |
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202 |
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203 warning ("duplicate unary operator `%s' for type `%s'", |
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204 op_name.c_str (), type_name.c_str ()); |
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205 } |
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206 |
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207 unary_ops.checkelem (static_cast<int> (op), t) = f; |
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208 |
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209 return false; |
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210 } |
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211 |
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212 bool |
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213 octave_value_typeinfo::do_register_non_const_unary_op |
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214 (octave_value::unary_op op, int t, non_const_unary_op_fcn f) |
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215 { |
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216 if (lookup_non_const_unary_op (op, t)) |
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217 { |
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218 std::string op_name = octave_value::unary_op_as_string (op); |
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219 std::string type_name = types(t); |
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220 |
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221 warning ("duplicate unary operator `%s' for type `%s'", |
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222 op_name.c_str (), type_name.c_str ()); |
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223 } |
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224 |
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225 non_const_unary_ops.checkelem (static_cast<int> (op), t) = f; |
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226 |
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227 return false; |
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228 } |
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229 |
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230 bool |
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231 octave_value_typeinfo::do_register_binary_op (octave_value::binary_op op, |
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232 int t1, int t2, |
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233 binary_op_fcn f) |
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234 { |
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235 if (lookup_binary_op (op, t1, t2)) |
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236 { |
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237 std::string op_name = octave_value::binary_op_as_string (op); |
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238 std::string t1_name = types(t1); |
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239 std::string t2_name = types(t2); |
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240 |
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241 warning ("duplicate binary operator `%s' for types `%s' and `%s'", |
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242 op_name.c_str (), t1_name.c_str (), t1_name.c_str ()); |
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243 } |
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244 |
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245 binary_ops.checkelem (static_cast<int> (op), t1, t2) = f; |
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246 |
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247 return false; |
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248 } |
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249 |
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250 bool |
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251 octave_value_typeinfo::do_register_assign_op (octave_value::assign_op op, |
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252 int t_lhs, int t_rhs, |
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253 assign_op_fcn f) |
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254 { |
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255 if (lookup_assign_op (op, t_lhs, t_rhs)) |
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256 { |
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257 std::string op_name = octave_value::assign_op_as_string (op); |
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258 std::string t_lhs_name = types(t_lhs); |
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259 std::string t_rhs_name = types(t_rhs); |
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260 |
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261 warning ("duplicate assignment operator `%s' for types `%s' and `%s'", |
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262 op_name.c_str (), t_lhs_name.c_str (), t_rhs_name.c_str ()); |
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263 } |
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264 |
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265 assign_ops.checkelem (static_cast<int> (op), t_lhs, t_rhs) = f; |
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266 |
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267 return false; |
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268 } |
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269 |
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270 bool |
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271 octave_value_typeinfo::do_register_assignany_op (octave_value::assign_op op, |
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272 int t_lhs, assign_op_fcn f) |
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273 { |
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274 if (lookup_assignany_op (op, t_lhs)) |
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275 { |
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276 std::string op_name = octave_value::assign_op_as_string (op); |
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277 std::string t_lhs_name = types(t_lhs); |
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278 |
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279 warning ("duplicate assignment operator `%s' for types `%s'", |
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280 op_name.c_str (), t_lhs_name.c_str ()); |
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281 } |
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282 |
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283 assignany_ops.checkelem (static_cast<int> (op), t_lhs) = f; |
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284 |
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285 return false; |
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286 } |
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287 |
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288 bool |
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289 octave_value_typeinfo::do_register_pref_assign_conv (int t_lhs, int t_rhs, |
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290 int t_result) |
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291 { |
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292 if (lookup_pref_assign_conv (t_lhs, t_rhs) >= 0) |
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293 { |
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294 std::string t_lhs_name = types(t_lhs); |
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295 std::string t_rhs_name = types(t_rhs); |
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296 |
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297 warning ("overriding assignment conversion for types `%s' and `%s'", |
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298 t_lhs_name.c_str (), t_rhs_name.c_str ()); |
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299 } |
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300 |
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301 pref_assign_conv.checkelem (t_lhs, t_rhs) = t_result; |
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302 |
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303 return false; |
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304 } |
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305 |
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306 bool |
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307 octave_value_typeinfo::do_register_widening_op |
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308 (int t, int t_result, type_conv_fcn f) |
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309 { |
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310 if (lookup_widening_op (t, t_result)) |
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311 { |
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312 std::string t_name = types(t); |
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313 std::string t_result_name = types(t_result); |
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314 |
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315 warning ("overriding widening op for `%s' to `%s'", |
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316 t_name.c_str (), t_result_name.c_str ()); |
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317 } |
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318 |
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319 widening_ops.checkelem (t, t_result) = f; |
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320 |
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321 return false; |
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322 } |
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323 |
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324 unary_op_fcn |
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325 octave_value_typeinfo::do_lookup_unary_op (octave_value::unary_op op, int t) |
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326 { |
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327 return unary_ops.checkelem (static_cast<int> (op), t); |
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328 } |
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329 |
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330 non_const_unary_op_fcn |
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331 octave_value_typeinfo::do_lookup_non_const_unary_op |
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332 (octave_value::unary_op op, int t) |
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333 { |
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334 return non_const_unary_ops.checkelem (static_cast<int> (op), t); |
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335 } |
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336 |
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337 binary_op_fcn |
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338 octave_value_typeinfo::do_lookup_binary_op (octave_value::binary_op op, |
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339 int t1, int t2) |
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340 { |
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341 return binary_ops.checkelem (static_cast<int> (op), t1, t2); |
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342 } |
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343 |
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344 assign_op_fcn |
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345 octave_value_typeinfo::do_lookup_assign_op (octave_value::assign_op op, |
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346 int t_lhs, int t_rhs) |
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347 { |
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348 return assign_ops.checkelem (static_cast<int> (op), t_lhs, t_rhs); |
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349 } |
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350 |
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351 assign_op_fcn |
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352 octave_value_typeinfo::do_lookup_assignany_op (octave_value::assign_op op, |
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353 int t_lhs) |
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354 { |
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355 return assignany_ops.checkelem (static_cast<int> (op), t_lhs); |
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356 } |
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357 |
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358 int |
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359 octave_value_typeinfo::do_lookup_pref_assign_conv (int t_lhs, int t_rhs) |
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360 { |
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361 return pref_assign_conv.checkelem (t_lhs, t_rhs); |
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362 } |
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363 |
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364 type_conv_fcn |
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365 octave_value_typeinfo::do_lookup_widening_op (int t, int t_result) |
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366 { |
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367 return widening_ops.checkelem (t, t_result); |
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368 } |
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369 |
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370 string_vector |
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371 octave_value_typeinfo::do_installed_type_names (void) |
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372 { |
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373 string_vector retval (num_types); |
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374 |
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375 for (int i = 0;i < num_types; i++) |
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376 retval (i) = types (i); |
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377 |
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378 return retval; |
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379 } |
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380 |
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381 DEFUN (typeinfo, args, , |
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382 "-*- texinfo -*-\n\ |
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383 @deftypefn {Built-in Function} {} typeinfo (@var{expr})\n\ |
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384 \n\ |
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385 Return the type of the expression @var{expr}, as a string. If\n\ |
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386 @var{EXPR} is omitted, return an array of strings containing all the\n\ |
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387 currently installed data types.\n\ |
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388 @end deftypefn") |
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389 { |
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390 octave_value retval; |
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391 |
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392 int nargin = args.length (); |
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393 |
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394 if (nargin == 0) |
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395 retval = octave_value_typeinfo::installed_type_names (); |
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396 else if (nargin == 1) |
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397 retval = args(0).type_name (); |
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398 else |
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399 print_usage ("typeinfo"); |
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400 |
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401 return retval; |
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402 } |
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403 |
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404 /* |
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405 ;;; Local Variables: *** |
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406 ;;; mode: C++ *** |
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407 ;;; End: *** |
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408 */ |
