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2376
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1 /* |
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2 |
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3 Copyright (C) 1996 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 <iostream.h> |
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32 |
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33 #include "error.h" |
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34 #include "ov-struct.h" |
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35 #include "unwind-prot.h" |
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36 |
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37 int octave_struct::t_id = -1; |
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38 |
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39 const string octave_struct::t_name ("struct"); |
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40 |
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41 |
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42 octave_value |
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43 octave_struct::struct_elt_val (const string& nm) const |
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44 { |
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45 octave_value retval; |
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46 |
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47 Pix idx = map.seek (nm); |
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48 |
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49 if (idx) |
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50 retval = map.contents (idx); |
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51 else |
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52 error ("structure has no member `%s'", nm.c_str ()); |
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53 |
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54 return retval; |
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55 } |
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56 |
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57 octave_value& |
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58 octave_struct::struct_elt_ref (const string& nm) |
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59 { |
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60 return map [nm]; |
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61 |
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62 #if 0 |
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63 static octave_value fooval; |
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64 |
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65 Pix idx = map.seek (nm); |
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66 |
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67 if (idx) |
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68 return map.contents (idx); |
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69 else if (insert) |
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70 return map [nm]; |
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71 else |
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72 error ("structure has no member `%s'", nm.c_str ()); |
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73 |
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74 return fooval; |
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75 #endif |
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76 } |
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77 |
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78 #if 0 |
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79 octave_value& |
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80 octave_struct::lookup_map_element (const string& name, bool insert, |
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81 bool silent) |
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82 { |
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83 static octave_value fooval; |
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84 |
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85 Pix idx = map.seek (name); |
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86 |
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87 if (idx) |
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88 return map.contents (idx); |
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89 else if (insert) |
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90 return map [name]; |
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91 else if (! silent) |
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92 error ("structure has no member `%s'", name.c_str ()); |
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93 |
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94 return fooval; |
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95 } |
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96 |
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97 octave_value |
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98 octave_struct::lookup_map_element (const string& ref, bool insert, |
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99 bool silent) |
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100 { |
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101 octave_value retval; |
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102 |
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103 if (! ref.empty ()) |
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104 { |
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105 SLList<string> list; |
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106 |
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107 size_t beg = 0; |
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108 size_t end; |
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109 |
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110 do |
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111 { |
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112 end = ref.find ('.', beg); |
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113 |
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114 string tmp = (end == NPOS) |
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115 ? ref.substr (beg) : ref.substr (beg, end - beg); |
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116 |
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117 list.append (tmp); |
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118 } |
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119 while (end != NPOS && (beg = end + 1)); |
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120 |
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121 retval = lookup_map_element (list, insert, silent); |
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122 } |
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123 |
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124 return retval; |
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125 } |
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126 |
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127 octave_value |
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128 octave_struct::lookup_map_element (SLList<string>& list, bool insert, |
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129 bool silent) |
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130 { |
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131 octave_value retval; |
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132 |
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133 Pix p = list.first (); |
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134 |
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135 while (p) |
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136 { |
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137 string elt = list (p); |
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138 |
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139 list.next (p); |
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140 |
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141 octave_value tmp = lookup_map_element (elt, insert, silent); |
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142 |
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143 if (error_state) |
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144 break; |
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145 |
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146 tmp_rep = tmp.rep; |
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147 |
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148 if (! p) |
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149 retval = tmp; |
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150 } |
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151 |
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152 return retval; |
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153 } |
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154 #endif |
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155 |
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156 void |
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157 octave_struct::print (ostream& os) |
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158 { |
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159 // XXX FIXME XXX -- would be nice to print the output in some |
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160 // standard order. Maybe all substructures first, maybe |
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161 // alphabetize entries, etc. |
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162 |
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163 begin_unwind_frame ("octave_struct_print"); |
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164 |
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165 unwind_protect_int (struct_indent); |
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166 unwind_protect_int (Vstruct_levels_to_print); |
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167 |
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168 if (Vstruct_levels_to_print-- > 0) |
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169 { |
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170 os.form ("\n%*s{\n", struct_indent, ""); |
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171 |
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172 increment_struct_indent (); |
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173 |
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174 Pix p = map.first (); |
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175 |
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176 while (p) |
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177 { |
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178 bool pad_after = false; |
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179 |
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180 string key = map.key (p); |
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181 octave_value val = map.contents (p); |
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182 |
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183 map.next (p); |
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184 |
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185 os.form ("%*s%s =", struct_indent, "", key.c_str ()); |
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186 |
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187 if (val.print_as_scalar ()) |
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188 os << " "; |
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189 else if (val.print_as_structure ()) |
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190 { |
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191 if (p) |
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192 pad_after = true; |
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193 } |
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194 else |
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195 { |
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196 if (p) |
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197 pad_after = true; |
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198 |
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199 os << "\n\n"; |
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200 } |
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201 |
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202 val.print (os); |
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203 |
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204 if (pad_after) |
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205 os << "\n"; |
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206 } |
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207 |
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208 decrement_struct_indent (); |
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209 |
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210 os.form ("%*s%s", struct_indent, "", "}\n"); |
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211 } |
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212 else |
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213 os << " <structure>\n"; |
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214 |
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215 run_unwind_frame ("octave_struct_print"); |
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216 } |
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217 |
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218 /* |
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219 ;;; Local Variables: *** |
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220 ;;; mode: C++ *** |
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221 ;;; End: *** |
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222 */ |
