On 30/03/2015 20:06, Bruno Albuquerque wrote:
Actually i think I was not clear about what I need. How would I apply
Err_trap for a higher level function? For example, a call to Indexer_new()
might fail under some circunstances and the program will exit due to that,
I would like for it not to exit immediately (for example, to be able to do
something else if the call fails). indexer_new() does nto accept a context
and it returns something when it works.
Try something like:
typedef struct {
Indexer *indexer;
} my_context_t;
static void
try_create_indexer(void *arg) {
my_context_t *ctx = (my_context_t*)arg;
ctx->indexer = Indexer_new();
}
void
other_code() {
my_context_t ctx;
Err *error = Err_trap(try_create_indexer, &ctx);
if (error != NULL) {
/* Handle error. */
}
else {
/* Indexer created successfully. */
Indexer *indexer = ctx.indexer;
}
}
C doesn't support closures, so such a verbose solution is necessary.
Nick
