source: doc/working/exception/impl/test-main.c@ bf70aa9

#include "exception.h"

#include <stdio.h>

// Translation Helpers:
#define CLEANUP(function) \
        struct __cleanup_hook __hidden_hook __attribute__((cleanup(function)))


// Local Print On Exit:
struct raii_base_type {
        const char * area;
};

void raii_dtor(struct raii_base_type * this) {
        printf("Exiting: %s\n", this->area);
}

#define raii_t __attribute__((cleanup(raii_dtor))) struct raii_base_type

// Runtime code (post-translation).
void terminate(int except_value) {
        raii_t a = {"terminate function"};
        __throw_terminate(except_value);
        printf("terminate returned\n");
}

void resume(int except_value) {
        raii_t a = {"resume function"};
        __throw_resume(except_value);
        printf("resume returned\n");
}

// Termination Test: Two handlers: no catch, catch
void bar() {
        void bar_try1() {
                terminate(4);
        }
        void bar_catch1(int index, exception except) {
                switch(except) {
                case 1:
                        printf("bar caught exception.\n");
                        break;
                default:
                        printf("INVALID INDEX in bar: %d\n", except);
                }
        }
        int bar_match1(exception except) {
                if (3 == except) {
                        return 1;
                } else {
                        return 0;
                }
        }
        __try_terminate(bar_try1, bar_catch1, bar_match1);
}

void foo() {
        void foo_try1() {
                bar();
        }
        void foo_catch1(int index, exception except) {
                switch(except) {
                case 1:
                        printf("foo caught exception 4.\n");
                        break;
                case 2:
                        printf("foo caught exception 2.\n");
                        break;
                default:
                        printf("INVALID INDEX in foo: %d\n", except);
                }
        }
        int foo_match1(exception except) {
                if (4 == except) {
                        return 1;
                } else if (2 == except) {
                        return 2;
                } else {
                        return 0;
                }
        }
        __try_terminate(foo_try1, foo_catch1, foo_match1);
}

int main(int argc, char * argv[]) {
        raii_t a = {"main function"};

        foo();
}