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