qapi/qapi-dealloc-visitor.c

   1 /*
   2  * Dealloc Visitor
   3  *
   4  * Copyright (C) 2012-2016 Red Hat, Inc.
   5  * Copyright IBM, Corp. 2011
   6  *
   7  * Authors:
   8  *  Michael Roth   <mdroth@linux.vnet.ibm.com>
   9  *
  10  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
  11  * See the COPYING.LIB file in the top-level directory.
  12  *
  13  */
  14
  15 #include "qemu/osdep.h"
  16 #include "qapi/dealloc-visitor.h"
  17 #include "qapi/qmp/qnull.h"
  18 #include "qapi/visitor-impl.h"
  19
  20 struct QapiDeallocVisitor
  21 {
  22     Visitor visitor;
  23 };
  24
  25 static bool qapi_dealloc_start_struct(Visitor *v, const char *name, void **obj,
  26                                       size_t unused, Error **errp)
  27 {
  28     return true;
  29 }
  30
  31 static void qapi_dealloc_end_struct(Visitor *v, void **obj)
  32 {
  33     if (obj) {
  34         g_free(*obj);
  35     }
  36 }
  37
  38 static void qapi_dealloc_end_alternate(Visitor *v, void **obj)
  39 {
  40     if (obj) {
  41         g_free(*obj);
  42     }
  43 }
  44
  45 static bool qapi_dealloc_start_list(Visitor *v, const char *name,
  46                                     GenericList **list, size_t size,
  47                                     Error **errp)
  48 {
  49     return true;
  50 }
  51
  52 static GenericList *qapi_dealloc_next_list(Visitor *v, GenericList *tail,
  53                                            size_t size)
  54 {
  55     GenericList *next = tail->next;
  56     g_free(tail);
  57     return next;
  58 }
  59
  60 static void qapi_dealloc_end_list(Visitor *v, void **obj)
  61 {
  62 }
  63
  64 static bool qapi_dealloc_type_str(Visitor *v, const char *name, char **obj,
  65                                   Error **errp)
  66 {
  67     if (obj) {
  68         g_free(*obj);
  69     }
  70     return true;
  71 }
  72
  73 static bool qapi_dealloc_type_int64(Visitor *v, const char *name, int64_t *obj,
  74                                     Error **errp)
  75 {
  76     return true;
  77 }
  78
  79 static bool qapi_dealloc_type_uint64(Visitor *v, const char *name,
  80                                      uint64_t *obj, Error **errp)
  81 {
  82     return true;
  83 }
  84
  85 static bool qapi_dealloc_type_bool(Visitor *v, const char *name, bool *obj,
  86                                    Error **errp)
  87 {
  88     return true;
  89 }
  90
  91 static bool qapi_dealloc_type_number(Visitor *v, const char *name, double *obj,
  92                                      Error **errp)
  93 {
  94     return true;
  95 }
  96
  97 static bool qapi_dealloc_type_anything(Visitor *v, const char *name,
  98                                        QObject **obj, Error **errp)
  99 {
 100     if (obj) {
 101         qobject_unref(*obj);
 102     }
 103     return true;
 104 }
 105
 106 static bool qapi_dealloc_type_null(Visitor *v, const char *name,
 107                                    QNull **obj, Error **errp)
 108 {
 109     if (obj) {
 110         qobject_unref(*obj);
 111     }
 112     return true;
 113 }
 114
 115 static void qapi_dealloc_free(Visitor *v)
 116 {
 117     g_free(container_of(v, QapiDeallocVisitor, visitor));
 118 }
 119
 120 Visitor *qapi_dealloc_visitor_new(void)
 121 {
 122     QapiDeallocVisitor *v;
 123
 124     v = g_malloc0(sizeof(*v));
 125
 126     v->visitor.type = VISITOR_DEALLOC;
 127     v->visitor.start_struct = qapi_dealloc_start_struct;
 128     v->visitor.end_struct = qapi_dealloc_end_struct;
 129     v->visitor.end_alternate = qapi_dealloc_end_alternate;
 130     v->visitor.start_list = qapi_dealloc_start_list;
 131     v->visitor.next_list = qapi_dealloc_next_list;
 132     v->visitor.end_list = qapi_dealloc_end_list;
 133     v->visitor.type_int64 = qapi_dealloc_type_int64;
 134     v->visitor.type_uint64 = qapi_dealloc_type_uint64;
 135     v->visitor.type_bool = qapi_dealloc_type_bool;
 136     v->visitor.type_str = qapi_dealloc_type_str;
 137     v->visitor.type_number = qapi_dealloc_type_number;
 138     v->visitor.type_any = qapi_dealloc_type_anything;
 139     v->visitor.type_null = qapi_dealloc_type_null;
 140     v->visitor.free = qapi_dealloc_free;
 141
 142     return &v->visitor;
 143 }