source: tests/exceptions/polymorphic.cfa@ ff7b2de

// Testing polymophic exception types.

forall(T &) exception proxy {};

vtable(proxy(int)) proxy_int;
vtable(proxy(char)) proxy_char;

void proxy_test(void) {
        proxy(int) an_int = {&proxy_int};
        proxy(char) a_char = {&proxy_char};

    try {
                throw an_int;
        } catch (proxy(int) *) {
                printf("terminate catch\n");
        }

        try {
                throwResume a_char;
        } catchResume (proxy(char) *) {
                printf("resume catch\n");
        }

        try {
                throw a_char;
        } catch (proxy(int) *) {
                printf("caught proxy(int)\n");
        } catch (proxy(char) *) {
                printf("caught proxy(char)\n");
        }
}

forall(T) exception cell {
        T data;
};

vtable(cell(int)) int_cell;
vtable(cell(char)) char_cell;
vtable(cell(bool)) bool_cell;

void cell_test(void) {
        try {
                cell(int) except = {&int_cell, -7};
                throw except;
        } catch (cell(int) * error) {
                printf("%d\n", error->data);
        }

        try {
                cell(bool) ball = {&bool_cell, false};
                throwResume ball;
                printf("%i\n", ball.data);
        } catchResume (cell(bool) * error) {
                printf("%i\n", error->data);
                error->data = true;
        }
}

int main(int argc, char * argv[]) {
        proxy_test();
        printf("\n");
        cell_test();
}