fakeupb.c

// Fake upb: a fake implementation for a small subset of the
// actual upb interface, for testing with Rust.

#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

typedef struct {
  uint32_t refcount;
  uint32_t number;
} upb_fielddef;

bool upb_fielddef_setnumber(upb_fielddef *f, uint32_t number) {
  fprintf(stderr, "C: setnumber(%d)\n", number);
  f->number = number;
  return true;
}

uint32_t upb_fielddef_number(const upb_fielddef *f) {
  fprintf(stderr, "C: number() = %d\n", f->number);
  return f->number;
}

upb_fielddef *upb_fielddef_new() {
  fprintf(stderr, "C: new()\n");
  upb_fielddef *f = malloc(sizeof(*f));
  f->refcount = 1;
  f->number = 1;
  return f;
}

void upb_fielddef_ref(upb_fielddef *f) {
  fprintf(stderr, "C: ref() = %d -> %d\n", f->refcount, f->refcount + 1);
  f->refcount++;
}

void upb_fielddef_unref(upb_fielddef *f) {
  fprintf(stderr, "C: unref() = %d -> %d\n", f->refcount, f->refcount - 1);
  if (--f->refcount == 0) {
    free(f);
  }
}

void upb_fielddef_freeze(upb_fielddef *f) {
  fprintf(stderr, "C: freeze() = %d\n", f->refcount);
}