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d5f3c29c MR |
1 | /* |
2 | * Dealloc Visitor | |
3 | * | |
4 | * Copyright IBM, Corp. 2011 | |
5 | * | |
6 | * Authors: | |
7 | * Michael Roth <mdroth@linux.vnet.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 "qapi-dealloc-visitor.h" | |
15 | #include "qemu-queue.h" | |
16 | #include "qemu-common.h" | |
17 | #include "qemu-objects.h" | |
18 | ||
19 | typedef struct StackEntry | |
20 | { | |
21 | void *value; | |
22 | QTAILQ_ENTRY(StackEntry) node; | |
23 | } StackEntry; | |
24 | ||
25 | struct QapiDeallocVisitor | |
26 | { | |
27 | Visitor visitor; | |
28 | QTAILQ_HEAD(, StackEntry) stack; | |
29 | }; | |
30 | ||
31 | static QapiDeallocVisitor *to_qov(Visitor *v) | |
32 | { | |
33 | return container_of(v, QapiDeallocVisitor, visitor); | |
34 | } | |
35 | ||
36 | static void qapi_dealloc_push(QapiDeallocVisitor *qov, void *value) | |
37 | { | |
7267c094 | 38 | StackEntry *e = g_malloc0(sizeof(*e)); |
d5f3c29c MR |
39 | |
40 | e->value = value; | |
41 | QTAILQ_INSERT_HEAD(&qov->stack, e, node); | |
42 | } | |
43 | ||
44 | static void *qapi_dealloc_pop(QapiDeallocVisitor *qov) | |
45 | { | |
46 | StackEntry *e = QTAILQ_FIRST(&qov->stack); | |
47 | QObject *value; | |
48 | QTAILQ_REMOVE(&qov->stack, e, node); | |
49 | value = e->value; | |
7267c094 | 50 | g_free(e); |
d5f3c29c MR |
51 | return value; |
52 | } | |
53 | ||
54 | static void qapi_dealloc_start_struct(Visitor *v, void **obj, const char *kind, | |
55 | const char *name, size_t unused, | |
56 | Error **errp) | |
57 | { | |
58 | QapiDeallocVisitor *qov = to_qov(v); | |
59 | qapi_dealloc_push(qov, obj); | |
60 | } | |
61 | ||
62 | static void qapi_dealloc_end_struct(Visitor *v, Error **errp) | |
63 | { | |
64 | QapiDeallocVisitor *qov = to_qov(v); | |
65 | void **obj = qapi_dealloc_pop(qov); | |
66 | if (obj) { | |
7267c094 | 67 | g_free(*obj); |
d5f3c29c MR |
68 | } |
69 | } | |
70 | ||
71 | static void qapi_dealloc_start_list(Visitor *v, const char *name, Error **errp) | |
72 | { | |
73 | } | |
74 | ||
75 | static GenericList *qapi_dealloc_next_list(Visitor *v, GenericList **list, | |
76 | Error **errp) | |
77 | { | |
78 | GenericList *retval = *list; | |
7267c094 | 79 | g_free(retval->value); |
d5f3c29c MR |
80 | *list = retval->next; |
81 | return retval; | |
82 | } | |
83 | ||
84 | static void qapi_dealloc_end_list(Visitor *v, Error **errp) | |
85 | { | |
86 | } | |
87 | ||
88 | static void qapi_dealloc_type_str(Visitor *v, char **obj, const char *name, | |
89 | Error **errp) | |
90 | { | |
91 | if (obj) { | |
7267c094 | 92 | g_free(*obj); |
d5f3c29c MR |
93 | } |
94 | } | |
95 | ||
96 | static void qapi_dealloc_type_int(Visitor *v, int64_t *obj, const char *name, | |
97 | Error **errp) | |
98 | { | |
99 | } | |
100 | ||
101 | static void qapi_dealloc_type_bool(Visitor *v, bool *obj, const char *name, | |
102 | Error **errp) | |
103 | { | |
104 | } | |
105 | ||
106 | static void qapi_dealloc_type_number(Visitor *v, double *obj, const char *name, | |
107 | Error **errp) | |
108 | { | |
109 | } | |
110 | ||
111 | static void qapi_dealloc_type_enum(Visitor *v, int *obj, const char *strings[], | |
112 | const char *kind, const char *name, | |
113 | Error **errp) | |
114 | { | |
115 | } | |
116 | ||
117 | Visitor *qapi_dealloc_get_visitor(QapiDeallocVisitor *v) | |
118 | { | |
119 | return &v->visitor; | |
120 | } | |
121 | ||
122 | void qapi_dealloc_visitor_cleanup(QapiDeallocVisitor *v) | |
123 | { | |
7267c094 | 124 | g_free(v); |
d5f3c29c MR |
125 | } |
126 | ||
127 | QapiDeallocVisitor *qapi_dealloc_visitor_new(void) | |
128 | { | |
129 | QapiDeallocVisitor *v; | |
130 | ||
7267c094 | 131 | v = g_malloc0(sizeof(*v)); |
d5f3c29c MR |
132 | |
133 | v->visitor.start_struct = qapi_dealloc_start_struct; | |
134 | v->visitor.end_struct = qapi_dealloc_end_struct; | |
135 | v->visitor.start_list = qapi_dealloc_start_list; | |
136 | v->visitor.next_list = qapi_dealloc_next_list; | |
137 | v->visitor.end_list = qapi_dealloc_end_list; | |
138 | v->visitor.type_enum = qapi_dealloc_type_enum; | |
139 | v->visitor.type_int = qapi_dealloc_type_int; | |
140 | v->visitor.type_bool = qapi_dealloc_type_bool; | |
141 | v->visitor.type_str = qapi_dealloc_type_str; | |
142 | v->visitor.type_number = qapi_dealloc_type_number; | |
143 | ||
144 | QTAILQ_INIT(&v->stack); | |
145 | ||
146 | return v; | |
147 | } |