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/*===
1st return value: 21
2nd return value: undefined
error: Error: test_2 error
final top: 1
===*/
static duk_ret_t test_1(duk_context *ctx) {
double a, b, c;
a = duk_get_number(ctx, -3);
b = duk_get_number(ctx, -2);
c = duk_get_number(ctx, -1);
c = c; /* silence warning */
duk_push_number(ctx, a + b);
/* just one return value */
return 1;
}
static duk_ret_t test_2(duk_context *ctx) {
duk_error(ctx, DUK_ERR_INTERNAL_ERROR, "test_2 error");
return 0;
}
void test(duk_context *ctx) {
duk_ret_t rc;
duk_set_top(ctx, 0);
duk_push_string(ctx, "foo"); /* dummy */
/* success case */
duk_push_int(ctx, 10);
duk_push_int(ctx, 11);
duk_push_int(ctx, 12);
rc = duk_safe_call(ctx, test_1, 3 /*nargs*/, 2 /*nrets*/);
if (rc == DUK_EXEC_SUCCESS) {
printf("1st return value: %s\n", duk_to_string(ctx, -2)); /* 21 */
printf("2nd return value: %s\n", duk_to_string(ctx, -1)); /* undefined */
} else {
printf("error: %s\n", duk_to_string(ctx, -2));
}
duk_pop_2(ctx);
/* error case */
duk_push_int(ctx, 10);
duk_push_int(ctx, 11);
duk_push_int(ctx, 12);
rc = duk_safe_call(ctx, test_2, 3 /*nargs*/, 2 /*nrets*/);
if (rc == DUK_EXEC_SUCCESS) {
printf("1st return value: %s\n", duk_to_string(ctx, -2)); /* 21 */
printf("2nd return value: %s\n", duk_to_string(ctx, -1)); /* undefined */
} else {
printf("error: %s\n", duk_to_string(ctx, -2));
}
duk_pop_2(ctx);
/* FIXME: also test invalid input stack shapes (like not enough args) */
printf("final top: %ld\n", (long) duk_get_top(ctx));
}