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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__) |
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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 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 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, 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 unary_ops.checkelem (static_cast<int> (op), t) = f; |
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197 |
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198 return false; |
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199 } |
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200 |
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201 bool |
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202 octave_value_typeinfo::do_register_non_const_unary_op |
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203 (octave_value::unary_op op, int t, non_const_unary_op_fcn f) |
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204 { |
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205 non_const_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_binary_op (octave_value::binary_op op, |
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212 int t1, int t2, |
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213 binary_op_fcn f) |
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214 { |
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215 binary_ops.checkelem (static_cast<int> (op), t1, t2) = f; |
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216 |
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217 return false; |
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218 } |
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219 |
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220 bool |
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221 octave_value_typeinfo::do_register_assign_op (octave_value::assign_op op, |
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222 int t_lhs, int t_rhs, |
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223 assign_op_fcn f) |
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224 { |
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225 assign_ops.checkelem (static_cast<int> (op), t_lhs, t_rhs) = 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_assignany_op (octave_value::assign_op op, |
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232 int t_lhs, assign_op_fcn f) |
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233 { |
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234 assignany_ops.checkelem (static_cast<int> (op), t_lhs) = f; |
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235 |
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236 return false; |
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237 } |
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238 |
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239 bool |
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240 octave_value_typeinfo::do_register_pref_assign_conv (int t_lhs, int t_rhs, |
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241 int t_result) |
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242 { |
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243 pref_assign_conv.checkelem (t_lhs, t_rhs) = t_result; |
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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_widening_op |
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250 (int t, int t_result, type_conv_fcn f) |
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251 { |
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252 widening_ops.checkelem (t, t_result) = f; |
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253 |
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254 return false; |
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255 } |
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256 |
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257 #include <iostream.h> |
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258 |
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259 unary_op_fcn |
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260 octave_value_typeinfo::do_lookup_unary_op (octave_value::unary_op op, int t) |
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261 { |
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262 return unary_ops.checkelem (static_cast<int> (op), t); |
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263 } |
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264 |
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265 non_const_unary_op_fcn |
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266 octave_value_typeinfo::do_lookup_non_const_unary_op |
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267 (octave_value::unary_op op, int t) |
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268 { |
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269 return non_const_unary_ops.checkelem (static_cast<int> (op), t); |
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270 } |
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271 |
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272 binary_op_fcn |
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273 octave_value_typeinfo::do_lookup_binary_op (octave_value::binary_op op, |
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274 int t1, int t2) |
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275 { |
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276 return binary_ops.checkelem (static_cast<int> (op), t1, t2); |
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277 } |
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278 |
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279 assign_op_fcn |
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280 octave_value_typeinfo::do_lookup_assign_op (octave_value::assign_op op, |
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281 int t_lhs, int t_rhs) |
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282 { |
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283 return assign_ops.checkelem (static_cast<int> (op), t_lhs, t_rhs); |
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284 } |
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285 |
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286 assign_op_fcn |
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287 octave_value_typeinfo::do_lookup_assignany_op (octave_value::assign_op op, |
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288 int t_lhs) |
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289 { |
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290 return assignany_ops.checkelem (static_cast<int> (op), t_lhs); |
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291 } |
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292 |
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293 int |
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294 octave_value_typeinfo::do_lookup_pref_assign_conv (int t_lhs, int t_rhs) |
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295 { |
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296 return pref_assign_conv.checkelem (t_lhs, t_rhs); |
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297 } |
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298 |
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299 type_conv_fcn |
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300 octave_value_typeinfo::do_lookup_widening_op (int t, int t_result) |
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301 { |
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302 return widening_ops.checkelem (t, t_result); |
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303 } |
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304 |
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305 string_vector |
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306 octave_value_typeinfo::do_installed_type_names (void) |
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307 { |
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308 string_vector retval (num_types); |
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309 |
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310 for (int i = 0;i < num_types; i++) |
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311 retval (i) = types (i); |
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312 |
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313 return retval; |
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314 } |
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315 |
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316 DEFUN (typeinfo, args, , |
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317 "usage: typeinfo (expr)\n\ |
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318 \n\ |
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319 Return the type of the expression EXPR, as a string. If EXPR is\n\ |
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320 omitted, return an array of strings containing all the currently\n\ |
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321 installed data types.") |
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322 { |
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323 octave_value retval; |
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324 |
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325 int nargin = args.length (); |
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326 |
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327 if (nargin == 0) |
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328 retval = octave_value_typeinfo::installed_type_names (); |
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329 else if (nargin == 1) |
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330 retval = args(0).type_name (); |
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331 else |
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332 print_usage ("typeinfo"); |
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333 |
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334 return retval; |
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335 } |
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336 |
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337 /* |
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338 ;;; Local Variables: *** |
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339 ;;; mode: C++ *** |
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340 ;;; End: *** |
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341 */ |
