1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
* GObject introspection: Enum implementation
*
* Copyright (C) 2005 Matthias Clasen
* Copyright (C) 2008,2009 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <glib.h>
#include <girepository.h>
#include "girepository-private.h"
#include "gitypelib-internal.h"
/**
* SECTION:gienuminfo
* @Short_description: Structs representing an enumeration and its values
* @Title: GIEnumInfo
*
* A GIEnumInfo represents an enumeration and a GIValueInfo struct represents a value
* of an enumeration. The GIEnumInfo contains a set of values and a type
* The GIValueInfo is fetched by calling g_enum_info_get_value() on a #GIEnumInfo.
*
* <refsect1 id="gi-gienuminfo.struct-hierarchy" role="struct_hierarchy">
* <title role="struct_hierarchy.title">Struct hierarchy</title>
* <synopsis>
* <link linkend="gi-GIBaseInfo">GIBaseInfo</link>
* +----<link linkend="gi-GIRegisteredTypeInfo">GIRegisteredTypeInfo</link>
* +----GIEnumInfo
* </synopsis>
* </refsect1>
*/
/**
* g_enum_info_get_n_values:
* @info: a #GIEnumInfo
*
* Obtain the number of values this enumeration contains.
*
* Returns: the number of enumeration values
*/
gint
g_enum_info_get_n_values (GIEnumInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
EnumBlob *blob;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (GI_IS_ENUM_INFO (info), 0);
blob = (EnumBlob *)&rinfo->typelib->data[rinfo->offset];
return blob->n_values;
}
/**
* g_enum_info_get_error_domain:
* @info: a #GIEnumInfo
*
* Obtain the string form of the quark for the error domain associated with
* this enum, if any.
*
* Returns: (transfer none): the string form of the error domain associated
* with this enum, or %NULL.
*
* Since: 1.29.17
*/
const gchar *
g_enum_info_get_error_domain (GIEnumInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
EnumBlob *blob;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (GI_IS_ENUM_INFO (info), 0);
blob = (EnumBlob *)&rinfo->typelib->data[rinfo->offset];
if (blob->error_domain)
return g_typelib_get_string (rinfo->typelib, blob->error_domain);
else
return NULL;
}
/**
* g_enum_info_get_value:
* @info: a #GIEnumInfo
* @n: index of value to fetch
*
* Obtain a value for this enumeration.
*
* Returns: (transfer full): the enumeration value or %NULL if type tag is wrong,
* free the struct with g_base_info_unref() when done.
*/
GIValueInfo *
g_enum_info_get_value (GIEnumInfo *info,
gint n)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
Header *header;
gint offset;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_ENUM_INFO (info), NULL);
header = (Header *)rinfo->typelib->data;
offset = rinfo->offset + header->enum_blob_size
+ n * header->value_blob_size;
return (GIValueInfo *) g_info_new (GI_INFO_TYPE_VALUE, (GIBaseInfo*)info, rinfo->typelib, offset);
}
/**
* g_enum_info_get_n_methods:
* @info: a #GIEnumInfo
*
* Obtain the number of methods that this enum type has.
*
* Returns: number of methods
*
* Since: 1.29.17
*/
gint
g_enum_info_get_n_methods (GIEnumInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
EnumBlob *blob;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (GI_IS_ENUM_INFO (info), 0);
blob = (EnumBlob *)&rinfo->typelib->data[rinfo->offset];
return blob->n_methods;
}
/**
* g_enum_info_get_method:
* @info: a #GIEnumInfo
* @n: index of method to get
*
* Obtain an enum type method at index @n.
*
* Returns: (transfer full): the #GIFunctionInfo. Free the struct by calling
* g_base_info_unref() when done.
*
* Since: 1.29.17
*/
GIFunctionInfo *
g_enum_info_get_method (GIEnumInfo *info,
gint n)
{
gint offset;
GIRealInfo *rinfo = (GIRealInfo *)info;
Header *header;
EnumBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_ENUM_INFO (info), NULL);
header = (Header *)rinfo->typelib->data;
blob = (EnumBlob *)&rinfo->typelib->data[rinfo->offset];
offset = rinfo->offset + header->enum_blob_size
+ blob->n_values * header->value_blob_size
+ n * header->function_blob_size;
return (GIFunctionInfo *) g_info_new (GI_INFO_TYPE_FUNCTION, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* g_enum_info_get_storage_type:
* @info: a #GIEnumInfo
*
* Obtain the tag of the type used for the enum in the C ABI. This will
* will be a signed or unsigned integral type.
* Note that in the current implementation the width of the type is
* computed correctly, but the signed or unsigned nature of the type
* may not match the sign of the type used by the C compiler.
*
* Return Value: the storage type for the enumeration
*/
GITypeTag
g_enum_info_get_storage_type (GIEnumInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
EnumBlob *blob;
g_return_val_if_fail (info != NULL, GI_TYPE_TAG_BOOLEAN);
g_return_val_if_fail (GI_IS_ENUM_INFO (info), GI_TYPE_TAG_BOOLEAN);
blob = (EnumBlob *)&rinfo->typelib->data[rinfo->offset];
return blob->storage_type;
}
/**
* g_value_info_get_value:
* @info: a #GIValueInfo
*
* Obtain the enumeration value of the #GIValueInfo.
*
* Returns: the enumeration value. This will always be representable
* as a 32-bit signed or unsigned value. The use of gint64 as the
* return type is to allow both.
*/
gint64
g_value_info_get_value (GIValueInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
ValueBlob *blob;
g_return_val_if_fail (info != NULL, -1);
g_return_val_if_fail (GI_IS_VALUE_INFO (info), -1);
blob = (ValueBlob *)&rinfo->typelib->data[rinfo->offset];
if (blob->unsigned_value)
return (gint64)(guint32)blob->value;
else
return (gint64)blob->value;
}
|
