qapi/qapi-visit-core.c

   1 /*
   2  * Core Definitions for QAPI Visitor Classes
   3  *
   4  * Copyright IBM, Corp. 2011
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
  10  * See the COPYING.LIB file in the top-level directory.
  11  *
  12  */
  13
  14 #include "qemu-common.h"
  15 #include "qapi/qmp/qobject.h"
  16 #include "qapi/qmp/qerror.h"
  17 #include "qapi/visitor.h"
  18 #include "qapi/visitor-impl.h"
  19
  20 void visit_start_struct(Visitor *v, void **obj, const char *kind,
  21                         const char *name, size_t size, Error **errp)
  22 {
  23     v->start_struct(v, obj, kind, name, size, errp);
  24 }
  25
  26 void visit_end_struct(Visitor *v, Error **errp)
  27 {
  28     v->end_struct(v, errp);
  29 }
  30
  31 void visit_start_implicit_struct(Visitor *v, void **obj, size_t size,
  32                                  Error **errp)
  33 {
  34     if (v->start_implicit_struct) {
  35         v->start_implicit_struct(v, obj, size, errp);
  36     }
  37 }
  38
  39 void visit_end_implicit_struct(Visitor *v, Error **errp)
  40 {
  41     if (v->end_implicit_struct) {
  42         v->end_implicit_struct(v, errp);
  43     }
  44 }
  45
  46 void visit_start_list(Visitor *v, const char *name, Error **errp)
  47 {
  48     v->start_list(v, name, errp);
  49 }
  50
  51 GenericList *visit_next_list(Visitor *v, GenericList **list, Error **errp)
  52 {
  53     return v->next_list(v, list, errp);
  54 }
  55
  56 void visit_end_list(Visitor *v, Error **errp)
  57 {
  58     v->end_list(v, errp);
  59 }
  60
  61 bool visit_start_union(Visitor *v, bool data_present, Error **errp)
  62 {
  63     if (v->start_union) {
  64         return v->start_union(v, data_present, errp);
  65     }
  66     return true;
  67 }
  68
  69 void visit_end_union(Visitor *v, bool data_present, Error **errp)
  70 {
  71     if (v->end_union) {
  72         v->end_union(v, data_present, errp);
  73     }
  74 }
  75
  76 void visit_optional(Visitor *v, bool *present, const char *name)
  77 {
  78     if (v->optional) {
  79         v->optional(v, present, name);
  80     }
  81 }
  82
  83 void visit_get_next_type(Visitor *v, QType *type, bool promote_int,
  84                          const char *name, Error **errp)
  85 {
  86     if (v->get_next_type) {
  87         v->get_next_type(v, type, promote_int, name, errp);
  88     }
  89 }
  90
  91 void visit_type_enum(Visitor *v, int *obj, const char * const strings[],
  92                      const char *kind, const char *name, Error **errp)
  93 {
  94     v->type_enum(v, obj, strings, kind, name, errp);
  95 }
  96
  97 void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp)
  98 {
  99     v->type_int(v, obj, name, errp);
 100 }
 101
 102 void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error **errp)
 103 {
 104     int64_t value;
 105
 106     if (v->type_uint8) {
 107         v->type_uint8(v, obj, name, errp);
 108     } else {
 109         value = *obj;
 110         v->type_int(v, &value, name, errp);
 111         if (value < 0 || value > UINT8_MAX) {
 112             error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
 113                        name ? name : "null", "uint8_t");
 114             return;
 115         }
 116         *obj = value;
 117     }
 118 }
 119
 120 void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name, Error **errp)
 121 {
 122     int64_t value;
 123
 124     if (v->type_uint16) {
 125         v->type_uint16(v, obj, name, errp);
 126     } else {
 127         value = *obj;
 128         v->type_int(v, &value, name, errp);
 129         if (value < 0 || value > UINT16_MAX) {
 130             error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
 131                        name ? name : "null", "uint16_t");
 132             return;
 133         }
 134         *obj = value;
 135     }
 136 }
 137
 138 void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name, Error **errp)
 139 {
 140     int64_t value;
 141
 142     if (v->type_uint32) {
 143         v->type_uint32(v, obj, name, errp);
 144     } else {
 145         value = *obj;
 146         v->type_int(v, &value, name, errp);
 147         if (value < 0 || value > UINT32_MAX) {
 148             error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
 149                        name ? name : "null", "uint32_t");
 150             return;
 151         }
 152         *obj = value;
 153     }
 154 }
 155
 156 void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name, Error **errp)
 157 {
 158     int64_t value;
 159
 160     if (v->type_uint64) {
 161         v->type_uint64(v, obj, name, errp);
 162     } else {
 163         value = *obj;
 164         v->type_int(v, &value, name, errp);
 165         *obj = value;
 166     }
 167 }
 168
 169 void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp)
 170 {
 171     int64_t value;
 172
 173     if (v->type_int8) {
 174         v->type_int8(v, obj, name, errp);
 175     } else {
 176         value = *obj;
 177         v->type_int(v, &value, name, errp);
 178         if (value < INT8_MIN || value > INT8_MAX) {
 179             error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
 180                        name ? name : "null", "int8_t");
 181             return;
 182         }
 183         *obj = value;
 184     }
 185 }
 186
 187 void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp)
 188 {
 189     int64_t value;
 190
 191     if (v->type_int16) {
 192         v->type_int16(v, obj, name, errp);
 193     } else {
 194         value = *obj;
 195         v->type_int(v, &value, name, errp);
 196         if (value < INT16_MIN || value > INT16_MAX) {
 197             error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
 198                        name ? name : "null", "int16_t");
 199             return;
 200         }
 201         *obj = value;
 202     }
 203 }
 204
 205 void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp)
 206 {
 207     int64_t value;
 208
 209     if (v->type_int32) {
 210         v->type_int32(v, obj, name, errp);
 211     } else {
 212         value = *obj;
 213         v->type_int(v, &value, name, errp);
 214         if (value < INT32_MIN || value > INT32_MAX) {
 215             error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
 216                        name ? name : "null", "int32_t");
 217             return;
 218         }
 219         *obj = value;
 220     }
 221 }
 222
 223 void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp)
 224 {
 225     if (v->type_int64) {
 226         v->type_int64(v, obj, name, errp);
 227     } else {
 228         v->type_int(v, obj, name, errp);
 229     }
 230 }
 231
 232 void visit_type_size(Visitor *v, uint64_t *obj, const char *name, Error **errp)
 233 {
 234     int64_t value;
 235
 236     if (v->type_size) {
 237         v->type_size(v, obj, name, errp);
 238     } else if (v->type_uint64) {
 239         v->type_uint64(v, obj, name, errp);
 240     } else {
 241         value = *obj;
 242         v->type_int(v, &value, name, errp);
 243         *obj = value;
 244     }
 245 }
 246
 247 void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp)
 248 {
 249     v->type_bool(v, obj, name, errp);
 250 }
 251
 252 void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp)
 253 {
 254     v->type_str(v, obj, name, errp);
 255 }
 256
 257 void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp)
 258 {
 259     v->type_number(v, obj, name, errp);
 260 }
 261
 262 void visit_type_any(Visitor *v, QObject **obj, const char *name,
 263                     Error **errp)
 264 {
 265     v->type_any(v, obj, name, errp);
 266 }
 267
 268 void output_type_enum(Visitor *v, int *obj, const char * const strings[],
 269                       const char *kind, const char *name,
 270                       Error **errp)
 271 {
 272     int i = 0;
 273     int value = *obj;
 274     char *enum_str;
 275
 276     assert(strings);
 277     while (strings[i++] != NULL);
 278     if (value < 0 || value >= i - 1) {
 279         error_setg(errp, QERR_INVALID_PARAMETER, name ? name : "null");
 280         return;
 281     }
 282
 283     enum_str = (char *)strings[value];
 284     visit_type_str(v, &enum_str, name, errp);
 285 }
 286
 287 void input_type_enum(Visitor *v, int *obj, const char * const strings[],
 288                      const char *kind, const char *name,
 289                      Error **errp)
 290 {
 291     Error *local_err = NULL;
 292     int64_t value = 0;
 293     char *enum_str;
 294
 295     assert(strings);
 296
 297     visit_type_str(v, &enum_str, name, &local_err);
 298     if (local_err) {
 299         error_propagate(errp, local_err);
 300         return;
 301     }
 302
 303     while (strings[value] != NULL) {
 304         if (strcmp(strings[value], enum_str) == 0) {
 305             break;
 306         }
 307         value++;
 308     }
 309
 310     if (strings[value] == NULL) {
 311         error_setg(errp, QERR_INVALID_PARAMETER, enum_str);
 312         g_free(enum_str);
 313         return;
 314     }
 315
 316     g_free(enum_str);
 317     *obj = value;
 318 }