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1 /***********************************************************
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2 Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
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3 Netherlands.
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4
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5 All Rights Reserved
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6
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7 Permission to use, copy, modify, and distribute this software and its
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8 documentation for any purpose and without fee is hereby granted,
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9 provided that the above copyright notice appear in all copies and that
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10 both that copyright notice and this permission notice appear in
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11 supporting documentation, and that the names of Stichting Mathematisch
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12 Centrum or CWI not be used in advertising or publicity pertaining to
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13 distribution of the software without specific, written prior permission.
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14
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15 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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16 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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17 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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18 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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21 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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22
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23 ******************************************************************/
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24
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86
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25 /* Map C struct members to Python object attributes */
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26
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27 #include "allobjects.h"
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28
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29 #include "structmember.h"
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30
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31 object *
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32 getmember(addr, mlist, name)
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33 char *addr;
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34 struct memberlist *mlist;
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35 char *name;
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36 {
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37 struct memberlist *l;
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38
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39 for (l = mlist; l->name != NULL; l++) {
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40 if (strcmp(l->name, name) == 0) {
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41 object *v;
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42 addr += l->offset;
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43 switch (l->type) {
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44 case T_SHORT:
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45 v = newintobject((long) *(short*)addr);
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46 break;
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47 case T_INT:
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48 v = newintobject((long) *(int*)addr);
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49 break;
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50 case T_LONG:
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51 v = newintobject(*(long*)addr);
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52 break;
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53 case T_FLOAT:
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54 v = newfloatobject((double)*(float*)addr);
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55 break;
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56 case T_DOUBLE:
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57 v = newfloatobject(*(double*)addr);
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58 break;
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59 case T_STRING:
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60 if (*(char**)addr == NULL) {
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61 INCREF(None);
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62 v = None;
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63 }
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64 else
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65 v = newstringobject(*(char**)addr);
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66 break;
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67 case T_OBJECT:
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68 v = *(object **)addr;
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69 if (v == NULL)
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70 v = None;
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71 INCREF(v);
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72 break;
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73 default:
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74 err_setstr(SystemError, "bad memberlist type");
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75 v = NULL;
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76 }
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77 return v;
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78 }
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79 }
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80
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81 err_setstr(NameError, name);
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82 return NULL;
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83 }
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84
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85 int
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86 setmember(addr, mlist, name, v)
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87 char *addr;
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88 struct memberlist *mlist;
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89 char *name;
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90 object *v;
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91 {
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92 struct memberlist *l;
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93
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94 for (l = mlist; l->name != NULL; l++) {
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95 if (strcmp(l->name, name) == 0) {
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96 if (l->readonly || l->type == T_STRING) {
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97 err_setstr(RuntimeError, "readonly attribute");
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98 return -1;
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99 }
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100 addr += l->offset;
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101 switch (l->type) {
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102 case T_SHORT:
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103 if (!is_intobject(v)) {
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104 err_badarg();
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105 return -1;
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106 }
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107 *(short*)addr = getintvalue(v);
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108 break;
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109 case T_INT:
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110 if (!is_intobject(v)) {
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111 err_badarg();
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112 return -1;
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113 }
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114 *(int*)addr = getintvalue(v);
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115 break;
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116 case T_LONG:
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117 if (!is_intobject(v)) {
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118 err_badarg();
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119 return -1;
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120 }
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121 *(long*)addr = getintvalue(v);
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122 break;
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123 case T_FLOAT:
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124 if (is_intobject(v))
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125 *(float*)addr = getintvalue(v);
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126 else if (is_floatobject(v))
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127 *(float*)addr = getfloatvalue(v);
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128 else {
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129 err_badarg();
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130 return -1;
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131 }
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132 break;
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133 case T_DOUBLE:
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134 if (is_intobject(v))
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135 *(double*)addr = getintvalue(v);
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136 else if (is_floatobject(v))
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137 *(double*)addr = getfloatvalue(v);
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138 else {
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139 err_badarg();
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140 return -1;
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141 }
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142 break;
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143 case T_OBJECT:
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144 XDECREF(*(object **)addr);
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145 XINCREF(v);
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146 *(object **)addr = v;
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147 break;
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148 default:
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149 err_setstr(SystemError, "bad memberlist type");
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150 return -1;
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151 }
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152 return 0;
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153 }
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154 }
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155
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156 err_setstr(NameError, name);
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95
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157 return -1;
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86
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158 }
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