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#include <ccan/typesafe_cb/typesafe_cb.h>
#include <string.h>
#include <stdint.h>
#include <ccan/tap/tap.h>
static char dummy = 0;
/* The example usage. */
static void _set_some_value(void *val)
{
ok1(val == &dummy);
}
#define set_some_value(expr) \
_set_some_value(typesafe_cb_cast(void *, unsigned long, (expr)))
static void _callback_onearg(void (*fn)(void *arg), void *arg)
{
fn(arg);
}
static void _callback_preargs(void (*fn)(int a, int b, void *arg), void *arg)
{
fn(1, 2, arg);
}
static void _callback_postargs(void (*fn)(void *arg, int a, int b), void *arg)
{
fn(arg, 1, 2);
}
#define callback_onearg(cb, arg) \
_callback_onearg(typesafe_cb(void, void *, (cb), (arg)), (arg))
#define callback_preargs(cb, arg) \
_callback_preargs(typesafe_cb_preargs(void, void *, (cb), (arg), int, int), (arg))
#define callback_postargs(cb, arg) \
_callback_postargs(typesafe_cb_postargs(void, void *, (cb), (arg), int, int), (arg))
static void my_callback_onearg(char *p)
{
ok1(strcmp(p, "hello world") == 0);
}
static void my_callback_preargs(int a, int b, char *p)
{
ok1(a == 1);
ok1(b == 2);
ok1(strcmp(p, "hello world") == 0);
}
static void my_callback_postargs(char *p, int a, int b)
{
ok1(a == 1);
ok1(b == 2);
ok1(strcmp(p, "hello world") == 0);
}
/* This is simply a compile test; we promised typesafe_cb_cast can be in a
* static initializer. */
struct callback_onearg
{
void (*fn)(void *arg);
const void *arg;
};
struct callback_onearg cb_onearg
= { typesafe_cb(void, void *, my_callback_onearg, (char *)(intptr_t)"hello world"),
"hello world" };
struct callback_preargs
{
void (*fn)(int a, int b, void *arg);
const void *arg;
};
struct callback_preargs cb_preargs
= { typesafe_cb_preargs(void, void *, my_callback_preargs,
(char *)(intptr_t)"hi", int, int), "hi" };
struct callback_postargs
{
void (*fn)(void *arg, int a, int b);
const void *arg;
};
struct callback_postargs cb_postargs
= { typesafe_cb_postargs(void, void *, my_callback_postargs,
(char *)(intptr_t)"hi", int, int), "hi" };
int main(int argc, char *argv[])
{
void *p = &dummy;
unsigned long l = (unsigned long)p;
char str[] = "hello world";
plan_tests(2 + 1 + 3 + 3);
set_some_value(p);
set_some_value(l);
callback_onearg(my_callback_onearg, str);
callback_preargs(my_callback_preargs, str);
callback_postargs(my_callback_postargs, str);
return exit_status();
}
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