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1 | office | 1 | /** |
2 | * @file NCDObject.c |
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3 | * @author Ambroz Bizjak <ambrop7@gmail.com> |
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4 | * |
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5 | * @section LICENSE |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * 3. Neither the name of the author nor the |
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15 | * names of its contributors may be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
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19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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21 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | |||
30 | #include <misc/offset.h> |
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31 | #include <misc/debug.h> |
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32 | #include <ncd/NCDVal.h> |
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33 | |||
34 | #include "NCDObject.h" |
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35 | |||
36 | int NCDObject_no_getvar (const NCDObject *obj, NCD_string_id_t name, NCDValMem *mem, NCDValRef *out_value) |
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37 | { |
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38 | return 0; |
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39 | } |
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40 | |||
41 | int NCDObject_no_getobj (const NCDObject *obj, NCD_string_id_t name, NCDObject *out_object) |
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42 | { |
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43 | return 0; |
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44 | } |
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45 | |||
46 | NCDObject NCDObject_Build (NCD_string_id_t type, void *data_ptr, NCDObject_func_getvar func_getvar, NCDObject_func_getobj func_getobj) |
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47 | { |
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48 | ASSERT(type >= -1) |
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49 | ASSERT(func_getvar) |
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50 | ASSERT(func_getobj) |
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51 | |||
52 | NCDObject obj; |
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53 | obj.type = type; |
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54 | obj.data_int = 0; |
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55 | obj.data_ptr = data_ptr; |
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56 | obj.method_user = data_ptr; |
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57 | obj.func_getvar = func_getvar; |
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58 | obj.func_getobj = func_getobj; |
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59 | obj.pobj = NULL; |
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60 | |||
61 | return obj; |
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62 | } |
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63 | |||
64 | NCDObject NCDObject_BuildFull (NCD_string_id_t type, void *data_ptr, int data_int, void *method_user, NCDObject_func_getvar func_getvar, NCDObject_func_getobj func_getobj, NCDPersistentObj *pobj) |
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65 | { |
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66 | ASSERT(type >= -1) |
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67 | ASSERT(func_getvar) |
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68 | ASSERT(func_getobj) |
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69 | |||
70 | NCDObject obj; |
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71 | obj.type = type; |
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72 | obj.data_int = data_int; |
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73 | obj.data_ptr = data_ptr; |
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74 | obj.method_user = method_user; |
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75 | obj.func_getvar = func_getvar; |
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76 | obj.func_getobj = func_getobj; |
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77 | obj.pobj = pobj; |
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78 | |||
79 | return obj; |
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80 | } |
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81 | |||
82 | NCD_string_id_t NCDObject_Type (const NCDObject *o) |
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83 | { |
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84 | return o->type; |
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85 | } |
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86 | |||
87 | void * NCDObject_DataPtr (const NCDObject *o) |
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88 | { |
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89 | return o->data_ptr; |
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90 | } |
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91 | |||
92 | int NCDObject_DataInt (const NCDObject *o) |
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93 | { |
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94 | return o->data_int; |
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95 | } |
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96 | |||
97 | void * NCDObject_MethodUser (const NCDObject *o) |
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98 | { |
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99 | return o->method_user; |
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100 | } |
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101 | |||
102 | int NCDObject_GetVar (const NCDObject *o, NCD_string_id_t name, NCDValMem *mem, NCDValRef *out_value) |
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103 | { |
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104 | ASSERT(name >= 0) |
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105 | ASSERT(mem) |
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106 | ASSERT(out_value) |
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107 | |||
108 | int res = o->func_getvar(o, name, mem, out_value); |
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109 | |||
110 | ASSERT(res == 0 || res == 1) |
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111 | ASSERT(res == 0 || (NCDVal_Assert(*out_value), 1)) |
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112 | |||
113 | return res; |
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114 | } |
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115 | |||
116 | int NCDObject_GetObj (const NCDObject *o, NCD_string_id_t name, NCDObject *out_object) |
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117 | { |
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118 | ASSERT(name >= 0) |
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119 | ASSERT(out_object) |
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120 | |||
121 | int res = o->func_getobj(o, name, out_object); |
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122 | |||
123 | ASSERT(res == 0 || res == 1) |
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124 | |||
125 | return res; |
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126 | } |
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127 | |||
128 | NCDPersistentObj * NCDObject_Pobj (const NCDObject *o) |
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129 | { |
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130 | return o->pobj; |
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131 | } |
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132 | |||
133 | static NCDObject NCDObject__dig_into_object (NCDObject object) |
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134 | { |
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135 | NCDObject obj2; |
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136 | while (NCDObject_GetObj(&object, NCD_STRING_EMPTY, &obj2)) { |
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137 | object = obj2; |
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138 | } |
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139 | |||
140 | return object; |
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141 | } |
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142 | |||
143 | int NCDObject_ResolveVarExprCompact (const NCDObject *o, const NCD_string_id_t *names, size_t num_names, NCDValMem *mem, NCDValRef *out_value) |
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144 | { |
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145 | ASSERT(num_names == 0 || names) |
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146 | ASSERT(mem) |
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147 | ASSERT(out_value) |
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148 | |||
149 | NCDObject object = NCDObject__dig_into_object(*o); |
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150 | |||
151 | while (num_names > 0) { |
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152 | NCDObject obj2; |
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153 | if (!NCDObject_GetObj(&object, *names, &obj2)) { |
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154 | if (num_names == 1 && NCDObject_GetVar(&object, *names, mem, out_value)) { |
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155 | return 1; |
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156 | } |
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157 | |||
158 | return 0; |
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159 | } |
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160 | |||
161 | object = NCDObject__dig_into_object(obj2); |
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162 | |||
163 | names++; |
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164 | num_names--; |
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165 | } |
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166 | |||
167 | return NCDObject_GetVar(&object, NCD_STRING_EMPTY, mem, out_value); |
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168 | } |
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169 | |||
170 | int NCDObject_ResolveObjExprCompact (const NCDObject *o, const NCD_string_id_t *names, size_t num_names, NCDObject *out_object) |
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171 | { |
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172 | ASSERT(num_names == 0 || names) |
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173 | ASSERT(out_object) |
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174 | |||
175 | NCDObject object = NCDObject__dig_into_object(*o); |
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176 | |||
177 | while (num_names > 0) { |
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178 | NCDObject obj2; |
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179 | if (!NCDObject_GetObj(&object, *names, &obj2)) { |
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180 | return 0; |
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181 | } |
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182 | |||
183 | object = NCDObject__dig_into_object(obj2); |
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184 | |||
185 | names++; |
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186 | num_names--; |
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187 | } |
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188 | |||
189 | *out_object = object; |
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190 | return 1; |
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191 | } |
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192 | |||
193 | void NCDPersistentObj_Init (NCDPersistentObj *o, NCDPersistentObj_func_retobj func_retobj) |
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194 | { |
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195 | ASSERT(func_retobj) |
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196 | |||
197 | o->func_retobj = func_retobj; |
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198 | LinkedList0_Init(&o->refs_list); |
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199 | } |
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200 | |||
201 | void NCDPersistentObj_Free (NCDPersistentObj *o) |
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202 | { |
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203 | for (LinkedList0Node *ln = LinkedList0_GetFirst(&o->refs_list); ln; ln = LinkedList0Node_Next(ln)) { |
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204 | NCDObjRef *ref = UPPER_OBJECT(ln, NCDObjRef, refs_list_node); |
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205 | ASSERT(ref->pobj == o) |
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206 | ref->pobj = NULL; |
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207 | } |
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208 | } |
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209 | |||
210 | void NCDObjRef_Init (NCDObjRef *o, NCDPersistentObj *pobj) |
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211 | { |
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212 | o->pobj = pobj; |
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213 | if (o->pobj) { |
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214 | LinkedList0_Prepend(&o->pobj->refs_list, &o->refs_list_node); |
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215 | } |
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216 | } |
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217 | |||
218 | void NCDObjRef_Free (NCDObjRef *o) |
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219 | { |
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220 | if (o->pobj) { |
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221 | LinkedList0_Remove(&o->pobj->refs_list, &o->refs_list_node); |
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222 | } |
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223 | } |
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224 | |||
225 | int NCDObjRef_Deref (NCDObjRef *o, NCDObject *res) |
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226 | { |
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227 | ASSERT(res) |
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228 | |||
229 | if (!o->pobj) { |
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230 | return 0; |
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231 | } |
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232 | *res = o->pobj->func_retobj(o->pobj); |
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233 | return 1; |
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234 | } |