libwallaby  v24
The wallaby standard library
vtable.h
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1 /*
2  * vtable.h
3  *
4  * Created on: Nov 13, 2015
5  * Author: Joshua Southerland
6  */
7 
8 #ifndef INCLUDE_WALLABY_VTABLE_H_
9 #define INCLUDE_WALLABY_VTABLE_H_
10 
11 
12 
13 #ifdef __cplusplus
14 extern "C" {
15 #endif
16 
17 #include "export.h"
18 
19 #define VF
20 #define VFL
21 #define VI
22 #define VIL
23 #define VH
24 
25 #ifdef __GNUC__
26 #define POSSIBLY_UNUSED __attribute__ ((unused))
27 #else
28 #define POSSIBLY_UNUSED
29 #endif
30 
31 #ifndef SWIG
32 #define VTABLE_FUNC_VOID(name, signature, args) \
33  typedef void (*name##_func) signature; \
34  EXPORT_SYM extern name##_func g_##name##_func; \
35  EXPORT_SYM extern const name##_func g_##name##_func_default; \
36  static const char *const name##_signature = "void" #signature; \
37  POSSIBLY_UNUSED static void name signature { (*g_##name##_func) args; }
38 
39 #define VTABLE_FUNC(name, returnType, signature, args) \
40  typedef returnType (*name##_func) signature; \
41  EXPORT_SYM extern name##_func g_##name##_func; \
42  EXPORT_SYM extern const name##_func g_##name##_func_default; \
43  static const char *const name##_signature = #returnType #signature; \
44  POSSIBLY_UNUSED static returnType name signature { return (*g_##name##_func) args; }
45 #else
46 #define VTABLE_FUNC_VOID(name, signature, args) \
47  typedef void (*name##_func) signature; \
48  static void name signature;
49 
50 #define VTABLE_FUNC(name, returnType, signature, args) \
51  typedef returnType (*name##_func) signature; \
52  static returnType name signature;
53 #endif
54 
55 #define VTABLE_SET_DEFAULT(name, impl) \
56  const name##_func g_##name##_func_default = &impl; \
57  name##_func g_##name##_func = g_##name##_func_default
58 
59 #ifdef __cplusplus
60 }
61 #endif
62 
63 
64 #endif /* INCLUDE_WALLABY_VTABLE_H_ */
export.h