--- /dev/null
+#include "typesafe_cb/typesafe_cb.h"
+#include <stdlib.h>
+
+/* const args in callbacks should be OK. */
+
+static void _register_callback(void (*cb)(void *arg), void *arg)
+{
+}
+
+#define register_callback(cb, arg) \
+ _register_callback(typesafe_cb(void, (cb), (arg)), (arg))
+
+static void _register_callback_pre(void (*cb)(int x, void *arg), void *arg)
+{
+}
+
+#define register_callback_pre(cb, arg) \
+ _register_callback_pre(typesafe_cb_preargs(void, (cb), (arg), int), (arg))
+
+static void _register_callback_post(void (*cb)(void *arg, int x), void *arg)
+{
+}
+
+#define register_callback_post(cb, arg) \
+ _register_callback_post(typesafe_cb_postargs(void, (cb), (arg), int), (arg))
+
+static void my_callback(const char *p)
+{
+}
+
+static void my_callback_pre(int x, const char *p)
+{
+}
+
+static void my_callback_post(const char *p, int x)
+{
+}
+
+int main(int argc, char *argv[])
+{
+ register_callback(my_callback, "hello world");
+ register_callback_pre(my_callback_pre, "hello world");
+ register_callback_post(my_callback_post, "hello world");
+ return 0;
+}
--- /dev/null
+#include "typesafe_cb/typesafe_cb.h"
+#include <stdlib.h>
+
+/* volatile args in callbacks should be OK. */
+
+static void _register_callback(void (*cb)(void *arg), void *arg)
+{
+}
+
+#define register_callback(cb, arg) \
+ _register_callback(typesafe_cb(void, (cb), (arg)), (arg))
+
+static void _register_callback_pre(void (*cb)(int x, void *arg), void *arg)
+{
+}
+
+#define register_callback_pre(cb, arg) \
+ _register_callback_pre(typesafe_cb_preargs(void, (cb), (arg), int), (arg))
+
+static void _register_callback_post(void (*cb)(void *arg, int x), void *arg)
+{
+}
+
+#define register_callback_post(cb, arg) \
+ _register_callback_post(typesafe_cb_postargs(void, (cb), (arg), int), (arg))
+
+static void my_callback(volatile char *p)
+{
+}
+
+static void my_callback_pre(int x, volatile char *p)
+{
+}
+
+static void my_callback_post(volatile char *p, int x)
+{
+}
+
+int main(int argc, char *argv[])
+{
+ register_callback(my_callback, "hello world");
+ register_callback_pre(my_callback_pre, "hello world");
+ register_callback_post(my_callback_post, "hello world");
+ return 0;
+}
/**
* typesafe_cb - cast a callback function if it matches the arg
- * @rettype: the return type of the callback function
+ * @rtype: the return type of the callback function
* @fn: the callback function to cast
* @arg: the (pointer) argument to hand to the callback function.
*
* #define register_callback(fn, arg) \
* _register_callback(typesafe_cb(void, (fn), (arg)), (arg))
*/
-#define typesafe_cb(rettype, fn, arg) \
+#define typesafe_cb(rtype, fn, arg) \
cast_if_type(cast_if_type(cast_if_type((fn), \
- rettype (*)(const typeof(arg)), \
- rettype (*)(void *)), \
- rettype (*)(volatile typeof(arg)), \
- rettype (*)(void *)), \
- rettype (*)(typeof(arg)), \
- rettype (*)(void *))
+ rtype (*)(const typeof(*arg)*), \
+ rtype (*)(void *)), \
+ rtype (*)(volatile typeof(*arg) *), \
+ rtype (*)(void *)), \
+ rtype (*)(typeof(arg)), \
+ rtype (*)(void *))
/**
* typesafe_cb_preargs - cast a callback function if it matches the arg
- * @rettype: the return type of the callback function
+ * @rtype: the return type of the callback function
* @fn: the callback function to cast
* @arg: the (pointer) argument to hand to the callback function.
*
* _register_callback(typesafe_cb_preargs(void, (fn), (arg), int),\
* (arg))
*/
-#define typesafe_cb_preargs(rettype, fn, arg, ...) \
+#define typesafe_cb_preargs(rtype, fn, arg, ...) \
cast_if_type(cast_if_type(cast_if_type((fn), \
- rettype (*)(__VA_ARGS__, \
- const typeof(arg)), \
- rettype (*)(__VA_ARGS__, \
- void *)), \
- rettype (*)(__VA_ARGS__, \
- volatile typeof(arg)), \
- rettype (*)(__VA_ARGS__, void *)), \
- rettype (*)(__VA_ARGS__, typeof(arg)), \
- rettype (*)(__VA_ARGS__, void *))
+ rtype (*)(__VA_ARGS__, \
+ const typeof(*arg) *),\
+ rtype (*)(__VA_ARGS__, \
+ void *)), \
+ rtype (*)(__VA_ARGS__, \
+ volatile typeof(*arg) *), \
+ rtype (*)(__VA_ARGS__, void *)), \
+ rtype (*)(__VA_ARGS__, typeof(arg)), \
+ rtype (*)(__VA_ARGS__, void *))
/**
* typesafe_cb_postargs - cast a callback function if it matches the arg
- * @rettype: the return type of the callback function
+ * @rtype: the return type of the callback function
* @fn: the callback function to cast
* @arg: the (pointer) argument to hand to the callback function.
*
* _register_callback(typesafe_cb_preargs(void, (fn), (arg), int),\
* (arg))
*/
-#define typesafe_cb_postargs(rettype, fn, arg, ...) \
+#define typesafe_cb_postargs(rtype, fn, arg, ...) \
cast_if_type(cast_if_type(cast_if_type((fn), \
- rettype (*)(const typeof(arg), \
- __VA_ARGS__), \
- rettype (*)(void *, \
- __VA_ARGS__)), \
- rettype (*)(volatile typeof(arg), \
- __VA_ARGS__), \
- rettype (*)(void *, __VA_ARGS__)), \
- rettype (*)(typeof(arg), __VA_ARGS__), \
- rettype (*)(void *, __VA_ARGS__))
+ rtype (*)(const typeof(*arg) *, \
+ __VA_ARGS__), \
+ rtype (*)(void *, \
+ __VA_ARGS__)), \
+ rtype (*)(volatile typeof(*arg) *, \
+ __VA_ARGS__), \
+ rtype (*)(void *, __VA_ARGS__)), \
+ rtype (*)(typeof(arg), __VA_ARGS__), \
+ rtype (*)(void *, __VA_ARGS__))
#endif /* CCAN_CAST_IF_TYPE_H */