nac3/nac3standalone/demo/demo.c

#include <inttypes.h>
#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define usize size_t

double dbl_nan(void) {
  return NAN;
}

double dbl_inf(void) {
  return INFINITY;
}

void output_bool(bool x) {
    puts(x ? "True" : "False");
}

void output_int32(int32_t x) {
    printf("%"PRId32"\n", x);
}

void output_int64(int64_t x) {
    printf("%"PRId64"\n", x);
}

void output_uint32(uint32_t x) {
    printf("%"PRIu32"\n", x);
}

void output_uint64(uint64_t x) {
    printf("%"PRIu64"\n", x);
}

void output_float64(double x) {
    if (isnan(x)) {
        puts("nan");
    } else {
        printf("%f\n", x);
    }
}

void output_range(int32_t range[3]) {
    printf("range(");
    if (range[0] != 0) {
        printf("%d, ", range[0]);
    }
    printf("%d", range[1]);
    if (range[2] != 1) {
        printf(", %d", range[2]);
    }
    puts(")");
}

void output_asciiart(int32_t x) {
    static const char *chars = " .,-:;i+hHM$*#@    ";
    if (x < 0) {
        putchar('\n');
    } else {
        putchar(chars[x]);
    }
}

struct cslice {
    void *data;
    usize len;
};

void output_int32_list(const struct cslice *slice) {
    const int32_t *data = (int32_t *) slice->data;

    putchar('[');
    for (usize i = 0; i < slice->len; ++i) {
        if (i == slice->len - 1) {
            printf("%d", data[i]);
        } else {
            printf("%d, ", data[i]);
        }
    }
    putchar(']');
    putchar('\n');
}

void output_str(const struct cslice *slice) {
    const char *data = (const char *) slice->data;

    for (usize i = 0; i < slice->len; ++i) {
        putchar(data[i]);
    }
}

void output_strln(const struct cslice *slice) {
    output_str(slice);
    putchar('\n');
}

uint64_t dbg_stack_address(__attribute__((unused)) const struct cslice *slice) {
    int i;
    void *ptr = (void *) &i;
    return (uintptr_t) ptr;
}

uint32_t __nac3_personality(uint32_t state, uint32_t exception_object, uint32_t context) {
    printf("__nac3_personality(state: %u, exception_object: %u, context: %u)\n", state, exception_object, context);
    exit(101);
    __builtin_unreachable();
}

struct exception {
    uint32_t name;
    struct cslice file;
    uint32_t line;
    uint32_t col;
    struct cslice func;
    struct cslice message;
    uint64_t param0;
    uint64_t param1;
    uint64_t param2;
};

void output_exception(const struct exception *ex) {
    fputs("exception { location: ", stdout);
    output_str(&ex->file);
    printf(":%u:%u, func: ", ex->line, ex->col);
    output_str(&ex->func);
    fputs(", message: ", stdout);
    output_str(&ex->message);
    printf(", params: [%lu, %lu, %lu] }\n", ex->param0, ex->param1, ex->param2);
}

uint32_t __nac3_raise(uint32_t state, uint32_t exception_object, uint32_t context) {
    printf("__nac3_raise(state: %#10x, exception_object: %#10x, context: %#10x)\n", state, exception_object, context);

    struct exception *ex = (struct exception *)((0x7ffffffful << 16) | state);
    output_exception(ex);

    exit(101);
    __builtin_unreachable();
}

void __nac3_end_catch(void) {}

extern int32_t run(void);

int main(void) {
    run();
}