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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 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include "quit.h" |
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28 |
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29 #include "error.h" |
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30 #include "gripes.h" |
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31 #include "oct-obj.h" |
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32 #include "ov-mapper.h" |
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33 #include "ov.h" |
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34 #include "toplev.h" |
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35 #include "unwind-prot.h" |
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36 |
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3219
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37 DEFINE_OCTAVE_ALLOCATOR (octave_mapper); |
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38 |
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39 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_mapper, |
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40 "built-in mapper function", |
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41 "built-in mapper function"); |
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42 |
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43 static bool |
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44 any_element_less_than (const NDArray& a, double val) |
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45 { |
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46 int len = a.length (); |
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47 |
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48 for (int i = 0; i < len; i++) |
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49 { |
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50 OCTAVE_QUIT; |
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51 |
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52 if (a(i) < val) |
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53 return true; |
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54 } |
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55 |
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56 return false; |
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57 } |
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58 |
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59 static bool |
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60 any_element_greater_than (const NDArray& a, double val) |
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61 { |
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62 int len = a.length (); |
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63 |
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64 for (int i = 0; i < len; i++) |
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65 { |
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66 OCTAVE_QUIT; |
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67 |
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68 if (a(i) > val) |
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69 return true; |
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70 } |
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71 |
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72 return false; |
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73 } |
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74 |
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75 // In most cases, we could use the map member function from the NDArray |
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76 // classes, but as currently implemented, they don't allow us to |
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77 // detect errors and abort properly. So use these macros to do the |
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78 // looping here instead. |
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79 |
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80 #define MAPPER_LOOP_2(T, F, M, CONV, R) \ |
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81 do \ |
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82 { \ |
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83 int len = M.length (); \ |
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84 \ |
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85 T result (M.dims ()); \ |
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86 \ |
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87 for (int i = 0; i < len; i++) \ |
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88 { \ |
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89 OCTAVE_QUIT; \ |
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90 \ |
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91 result(i) = CONV (F (M(i))); \ |
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92 \ |
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93 if (error_state) \ |
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94 return retval; \ |
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95 } \ |
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96 \ |
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97 retval = R; \ |
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98 } \ |
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99 while (0) |
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100 |
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101 #define MAPPER_LOOP_1(T, F, M, CONV) \ |
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102 MAPPER_LOOP_2 (T, F, M, CONV, result) |
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103 |
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104 #define MAPPER_LOOP(T, F, M) \ |
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105 MAPPER_LOOP_1 (T, F, M, ) |
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106 |
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107 octave_value |
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108 octave_mapper::apply (const octave_value& arg) const |
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109 { |
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110 octave_value retval; |
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111 |
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112 // XXX FIXME XXX -- is_real_type can return true. Should it really |
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113 // work that way? |
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114 |
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115 if (arg.is_real_type () |
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116 && (c_c_map_fcn || d_d_map_fcn || d_b_map_fcn) |
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117 && ! (arg.is_string () && ch_map_fcn)) |
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118 { |
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119 if (arg.is_scalar_type ()) |
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120 { |
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121 double d = arg.double_value (); |
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122 |
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123 if (can_ret_cmplx_for_real && (d < lower_limit || d > upper_limit)) |
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124 { |
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125 if (c_c_map_fcn) |
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126 retval = c_c_map_fcn (Complex (d)); |
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127 else |
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128 error ("%s: unable to handle real arguments", |
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129 name().c_str ()); |
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130 } |
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131 else if (d_d_map_fcn) |
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132 retval = d_d_map_fcn (d); |
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133 else if (d_b_map_fcn) |
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134 retval = d_b_map_fcn (d); |
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135 else |
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136 error ("%s: unable to handle real arguments", |
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137 name().c_str ()); |
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138 } |
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139 else |
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140 { |
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141 NDArray m = arg.array_value (); |
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142 |
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143 if (error_state) |
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144 return retval; |
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145 |
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146 if (can_ret_cmplx_for_real |
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147 && (any_element_less_than (m, lower_limit) |
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148 || any_element_greater_than (m, upper_limit))) |
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149 { |
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150 if (c_c_map_fcn) |
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151 MAPPER_LOOP (ComplexNDArray, c_c_map_fcn, m); |
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152 else |
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153 error ("%s: unable to handle real arguments", |
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154 name().c_str ()); |
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155 } |
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156 else if (d_d_map_fcn) |
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157 MAPPER_LOOP (NDArray, d_d_map_fcn, m); |
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158 else if (d_b_map_fcn) |
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159 MAPPER_LOOP (boolNDArray, d_b_map_fcn, m); |
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160 else |
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161 error ("%s: unable to handle real arguments", |
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162 name().c_str ()); |
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163 } |
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164 } |
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165 else if (arg.is_complex_type ()) |
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166 { |
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167 if (arg.is_scalar_type ()) |
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168 { |
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169 Complex c = arg.complex_value (); |
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170 |
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171 if (d_c_map_fcn) |
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172 retval = d_c_map_fcn (c); |
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173 else if (c_c_map_fcn) |
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174 retval = c_c_map_fcn (c); |
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175 else if (c_b_map_fcn) |
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176 retval = c_b_map_fcn (c); |
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177 else |
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178 error ("%s: unable to handle complex arguments", |
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179 name().c_str ()); |
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180 } |
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181 else |
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182 { |
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183 ComplexNDArray cm = arg.complex_array_value (); |
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184 |
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185 if (error_state) |
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186 return retval; |
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187 |
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188 if (d_c_map_fcn) |
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189 MAPPER_LOOP (NDArray, d_c_map_fcn, cm); |
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190 else if (c_c_map_fcn) |
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191 MAPPER_LOOP (ComplexNDArray, c_c_map_fcn, cm); |
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192 else if (c_b_map_fcn) |
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193 MAPPER_LOOP (boolNDArray, c_b_map_fcn, cm); |
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194 else |
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195 error ("%s: unable to handle complex arguments", |
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196 name().c_str ()); |
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197 } |
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198 } |
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199 else if (ch_map_fcn) |
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200 { |
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201 // XXX FIXME XXX -- this could be done in a better way... |
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202 |
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203 octave_value tmp = arg.convert_to_str (); |
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204 |
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205 if (! error_state) |
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206 { |
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207 charNDArray chm = tmp.char_array_value (); |
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208 |
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209 if (! error_state) |
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210 { |
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211 switch (ch_map_flag) |
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212 { |
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213 case 0: |
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214 MAPPER_LOOP_1 (boolNDArray, ch_map_fcn, chm, bool); |
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215 break; |
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216 |
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217 case 1: |
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218 MAPPER_LOOP (NDArray, ch_map_fcn, chm); |
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219 break; |
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220 |
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221 case 2: |
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222 MAPPER_LOOP_2 (charNDArray, ch_map_fcn, chm, , |
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223 octave_value (result, true)); |
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224 break; |
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225 |
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226 default: |
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227 panic_impossible (); |
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228 break; |
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229 } |
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230 } |
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231 } |
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232 } |
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233 else |
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234 gripe_wrong_type_arg ("mapper", arg); |
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235 |
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236 return retval; |
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237 } |
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238 |
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239 octave_value_list |
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240 octave_mapper::subsref (const std::string& type, |
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241 const std::list<octave_value_list>& idx, |
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242 int nargout) |
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243 { |
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244 octave_value_list retval; |
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245 |
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246 switch (type[0]) |
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247 { |
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248 case '(': |
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249 retval = do_multi_index_op (nargout, idx.front ()); |
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250 break; |
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251 |
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252 case '{': |
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253 case '.': |
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254 { |
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255 std::string nm = type_name (); |
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256 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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257 } |
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258 break; |
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259 |
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260 default: |
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261 panic_impossible (); |
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262 } |
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263 |
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264 return retval; |
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265 |
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266 // XXX FIXME XXX -- perhaps there should be an |
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267 // octave_value_list::next_subsref member function? See also |
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268 // and octave_builtin::subsref. |
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269 |
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270 if (idx.size () > 1) |
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271 retval = retval(0).next_subsref (nargout, type, idx); |
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272 } |
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273 |
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274 octave_value_list |
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275 octave_mapper::do_multi_index_op (int, const octave_value_list& args) |
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276 { |
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277 octave_value retval; |
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278 |
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279 if (error_state) |
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280 return retval; |
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281 |
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282 int nargin = args.length (); |
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283 |
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284 if (nargin > 1) |
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285 ::error ("%s: too many arguments", name().c_str ()); |
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286 else if (nargin < 1) |
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287 ::error ("%s: too few arguments", name().c_str ()); |
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288 else |
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289 { |
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290 if (args(0).is_defined ()) |
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291 { |
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292 unwind_protect::begin_frame ("mapper_func_eval"); |
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293 |
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294 unwind_protect_ptr (curr_function); |
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295 unwind_protect_ptr (curr_caller_function); |
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296 |
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297 curr_caller_function = curr_function; |
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298 curr_function = this; |
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299 |
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300 retval = apply (args(0)); |
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301 |
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302 unwind_protect::run_frame ("mapper_func_eval"); |
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303 } |
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304 else |
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305 ::error ("%s: argument undefined", name().c_str ()); |
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306 } |
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307 |
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308 return retval; |
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309 } |
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310 |
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311 /* |
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312 ;;; Local Variables: *** |
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313 ;;; mode: C++ *** |
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314 ;;; End: *** |
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315 */ |
