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Add macros to check for correct signal_emit params

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This allows the compiler to throw an error if the params argument
doesn't match the number of params provided after.
This commit is contained in:
Doug Freed 2018-09-30 03:24:03 +00:00
parent f5e587a83b
commit e38774cc65
2 changed files with 21 additions and 4 deletions
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4
src/core/signals.c
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@ -270,7 +270,7 @@ static int signal_emit_real(Signal *rec, int params, va_list va,
return stopped;
}
int signal_emit(const char *signal, int params, ...)
int signal_emit_func(const char *signal, int params, ...)
{
Signal *rec;
va_list va;
@ -290,7 +290,7 @@ int signal_emit(const char *signal, int params, ...)
return rec != NULL;
}
int signal_emit_id(int signal_id, int params, ...)
int signal_emit_id_func(int signal_id, int params, ...)
{
Signal *rec;
va_list va;

21
src/core/signals.h
View File

@ -40,8 +40,25 @@ void signal_remove_full(const char *signal, SIGNAL_FUNC func, void *user_data);
void signal_remove_id(int signal_id, SIGNAL_FUNC func, void *user_data);
/* emit signal */
int signal_emit(const char *signal, int params, ...);
int signal_emit_id(int signal_id, int params, ...);
/* macros to check for proper argument count */
#define signal_emit(signal, params, ...) signal_emit_##params(signal, ##__VA_ARGS__)
#define signal_emit_0(signal) signal_emit_func(signal, 0)
#define signal_emit_1(signal, arg1) signal_emit_func(signal, 1, arg1)
#define signal_emit_2(signal, arg1, arg2) signal_emit_func(signal, 2, arg1, arg2)
#define signal_emit_3(signal, arg1, arg2, arg3) signal_emit_func(signal, 3, arg1, arg2, arg3)
#define signal_emit_4(signal, arg1, arg2, arg3, arg4) signal_emit_func(signal, 4, arg1, arg2, arg3, arg4)
#define signal_emit_5(signal, arg1, arg2, arg3, arg4, arg5) signal_emit_func(signal, 5, arg1, arg2, arg3, arg4, arg5)
#define signal_emit_6(signal, arg1, arg2, arg3, arg4, arg5, arg6) signal_emit_func(signal, 6, arg1, arg2, arg3, arg4, arg5, arg6)
#define signal_emit_id(signal, params, ...) signal_emit_id_##params(signal, ##__VA_ARGS__)
#define signal_emit_id_0(signal) signal_emit_id_func(signal, 0)
#define signal_emit_id_1(signal, arg1) signal_emit_id_func(signal, 1, arg1)
#define signal_emit_id_2(signal, arg1, arg2) signal_emit_id_func(signal, 2, arg1, arg2)
#define signal_emit_id_3(signal, arg1, arg2, arg3) signal_emit_id_func(signal, 3, arg1, arg2, arg3)
#define signal_emit_id_4(signal, arg1, arg2, arg3, arg4) signal_emit_id_func(signal, 4, arg1, arg2, arg3, arg4)
#define signal_emit_id_5(signal, arg1, arg2, arg3, arg4, arg5) signal_emit_id_func(signal, 5, arg1, arg2, arg3, arg4, arg5)
#define signal_emit_id_6(signal, arg1, arg2, arg3, arg4, arg5, arg6) signal_emit_id_func(signal, 6, arg1, arg2, arg3, arg4, arg5, arg6)
int signal_emit_func(const char *signal, int params, ...);
int signal_emit_id_func(int signal_id, int params, ...);
/* continue currently emitted signal with different parameters */
void signal_continue(int params, ...);