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#include <sollya.h>
int hide_everything(sollya_msg_t msg, void *data) {
if (data != NULL)
printf("Callback hide_everything receives a non-NULL data set.\n");
(void)msg;
return 0;
}
int keep_comparison_warnings(sollya_msg_t msg, void *data) {
(void)data;
switch(sollya_lib_get_msg_id(msg)) {
case SOLLYA_MSG_TEST_RELIES_ON_FP_RESULT_THAT_IS_NOT_FAITHFUL:
case SOLLYA_MSG_TEST_RELIES_ON_FP_RESULT:
case SOLLYA_MSG_TEST_RELIES_ON_FP_RESULT_FAITHFUL_BUT_UNDECIDED:
case SOLLYA_MSG_TEST_RELIES_ON_FP_RESULT_FAITHFUL_BUT_NOT_REAL:
return 1;
default:
return 0;
}
}
int flag_double_rounding = 0;
int set_flag_on_problem(sollya_msg_t msg, void *data) {
(void)data;
char *s;
switch(sollya_lib_get_msg_id(msg)) {
case SOLLYA_MSG_ROUNDING_OCCURRED_WHILE_READING_A_CONSTANT:
flag_double_rounding = 1;
s = sollya_lib_msg_to_text(msg);
printf("Generic message: %s\n", s);
sollya_lib_free(s);
printf("Specific message:\n");
}
return 1;
}
#define SIZE 10
struct callback_data_struct {
int counter;
char *tab[SIZE];
};
typedef struct callback_data_struct callback_data;
int remember_history(sollya_msg_t msg, void *data) {
callback_data *data_ptr = (callback_data *)(data);
if (data==NULL) {
printf("rember_history callback is called with NULL as data argument.\n");
return 0;
}
if (data_ptr->counter < SIZE) {
data_ptr->tab[data_ptr->counter] = sollya_lib_msg_to_text(msg);
data_ptr->counter++;
}
return 0;
}
int main(void) {
sollya_obj_t a, b, c;
int (*old_callback)(sollya_msg_t, void *);
void *old_data;
callback_data calls;
int i;
calls.counter = 0;
sollya_lib_init();
/* Display a warning */
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
/* Callback that stops all messages. Tests the effect of the value returned by the callback when it is called */
printf("\n");
if (!sollya_lib_install_msg_callback(hide_everything, NULL))
printf("An error happened when installing the message callback\n");
printf("Nothing should be displayed between now and ");
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("now.\n");
/* Callback that stops some messages but not all. Tests that the variable msg is correctly passed to the callback */
printf("\n");
if (!sollya_lib_install_msg_callback(keep_comparison_warnings, NULL))
printf("An error happened when installing the message callback\n");
printf("Nothing should be displayed between now and ");
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("now.\n");
a = SOLLYA_DIV(SOLLYA_LOG(SOLLYA_CONST(17)), SOLLYA_LOG(SOLLYA_CONST(2))); b = SOLLYA_LOG2(SOLLYA_CONST(17));
c = sollya_lib_cmp_less(a, b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
/* Check that uninstalling a callback works and that callbacks do not stack */
/* A warning should be displayed */
printf("\n");
if (!sollya_lib_uninstall_msg_callback())
printf("An error happened when removing the message callback\n");
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
/* Callback with side effect */
printf("\n");
if (!sollya_lib_install_msg_callback(set_flag_on_problem, NULL))
printf("An error happened when installing the message callback\n");
printf("Value of the flag: %d\n", flag_double_rounding);
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("Value of the flag: %d\n", flag_double_rounding);
a = sollya_lib_parse_string("0.1");
sollya_lib_clear_obj(a);
printf("Value of the flag: %d\n", flag_double_rounding);
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("Value of the flag: %d\n", flag_double_rounding);
/* Testing get_msg_callback, when no callback is installed */
sollya_lib_uninstall_msg_callback();
sollya_lib_get_msg_callback(&old_callback, &old_data);
if ( (old_callback != NULL) || (old_data != NULL) )
printf("sollya_lib_get_msg_callback returned a non-NULL couple of pointers (%p, %p) while no callback is installed.\n", old_callback, old_data);
/* Testing get_msg_callback, when a callback actually is installed */
printf("\n");
if (!sollya_lib_install_msg_callback(keep_comparison_warnings, NULL))
printf("An error happened when installing the message callback\n");
printf("Nothing should be displayed between now and ");
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("now.\n");
a = SOLLYA_DIV(SOLLYA_LOG(SOLLYA_CONST(17)), SOLLYA_LOG(SOLLYA_CONST(2))); b = SOLLYA_LOG2(SOLLYA_CONST(17));
c = sollya_lib_cmp_less(a, b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
sollya_lib_get_msg_callback(&old_callback, NULL);
if (!sollya_lib_install_msg_callback(hide_everything, NULL))
printf("An error happened when installing the message callback\n");
printf("Nothing should be displayed between now and ");
a = SOLLYA_DIV(SOLLYA_LOG(SOLLYA_CONST(17)), SOLLYA_LOG(SOLLYA_CONST(2))); b = SOLLYA_LOG2(SOLLYA_CONST(17));
c = sollya_lib_cmp_less(a, b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("now.\n");
if (old_callback != keep_comparison_warnings)
printf("sollya_lib_get_msg_callback returned a pointer different from the intended callback.\n");
if (old_callback) {
if (!sollya_lib_install_msg_callback(old_callback, NULL))
printf("An error happened when installing the message callback\n");
}
printf("Nothing should be displayed between now and ");
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("now.\n");
a = SOLLYA_DIV(SOLLYA_LOG(SOLLYA_CONST(17)), SOLLYA_LOG(SOLLYA_CONST(2))); b = SOLLYA_LOG2(SOLLYA_CONST(17));
c = sollya_lib_cmp_less(a, b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
/* Testing the mechanism of data passed to callbacks */
printf("\n");
if (!sollya_lib_install_msg_callback(remember_history, &calls))
printf("An error happened when installing the message callback\n");
printf("Nothing should be displayed between now and ");
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
a = SOLLYA_DIV(SOLLYA_LOG(SOLLYA_CONST(17)), SOLLYA_LOG(SOLLYA_CONST(2))); b = SOLLYA_LOG2(SOLLYA_CONST(17));
c = sollya_lib_cmp_less(a, b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("now.\n");
printf("Recorded messages:\n");
for(i=0;i<calls.counter;i++)
printf(" * %s\n", calls.tab[i]);
if (calls.counter >= SIZE) printf(" [Other messages discarded]\n");
/* Testing get_msg_callback when a callback using data is installed */
printf("\n");
sollya_lib_get_msg_callback(&old_callback, &old_data);
if (old_callback != remember_history)
printf("sollya_lib_get_msg_callback returned a pointer different from the intended callback.\n");
if (old_data != &calls)
printf("sollya_lib_get_msg_callback returned a data pointer different from the intended data object.\n");
if (!sollya_lib_install_msg_callback(hide_everything, NULL))
printf("An error happened when installing the message callback\n");
printf("Nothing should be displayed between now and ");
a = SOLLYA_DIV(SOLLYA_LOG(SOLLYA_CONST(17)), SOLLYA_LOG(SOLLYA_CONST(2))); b = SOLLYA_LOG2(SOLLYA_CONST(17));
c = sollya_lib_cmp_less(a, b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("now.\n");
printf("Recorded messages:\n");
for(i=0;i<calls.counter;i++)
printf(" * %s\n", calls.tab[i]);
if (calls.counter >= SIZE) printf(" [Other messages discarded]\n");
if (old_callback) {
if (!sollya_lib_install_msg_callback(old_callback, old_data))
printf("An error happened when installing the message callback\n");
}
printf("Nothing should be displayed between now and ");
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("now.\n");
printf("Recorded messages:\n");
for(i=0;i<calls.counter;i++)
printf(" * %s\n", calls.tab[i]);
if (calls.counter >= SIZE) printf(" [Other messages discarded]\n");
old_data = NULL;
sollya_lib_get_msg_callback(NULL, &old_data);
if (old_data != &calls)
printf("sollya_lib_get_msg_callback returned a data pointer different from the intended data object.\n");
if (!sollya_lib_install_msg_callback(old_callback, NULL))
printf("An error happened when installing the message callback\n");
printf("Expecting a warning about NULL passed as data argument to the callback:\n");
a = SOLLYA_PI; b = sollya_lib_default(); c = sollya_lib_add(a,b);
sollya_lib_clear_obj(a); sollya_lib_clear_obj(b); sollya_lib_clear_obj(c);
printf("Recorded messages:\n");
for(i=0;i<calls.counter;i++)
printf(" * %s\n", calls.tab[i]);
if (calls.counter >= SIZE) printf(" [Other messages discarded]\n");
for(i=0;i<calls.counter;i++) {
sollya_lib_free(calls.tab[i]);
}
sollya_lib_close();
return 0;
}
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