static bool upb_fielddef_resolve(upb_fielddef *f, upb_def *def, upb_status *s) {
assert(upb_dyncast_unresolveddef(f->def));
upb_def_unref(f->def);
f->def = def;
if (f->type == UPB_TYPE(ENUM) && f->default_is_symbolic) {
// Resolve the enum's default from a string to an integer.
upb_byteregion *bytes = upb_value_getbyteregion(f->defaultval);
assert(bytes); // Points to either a real default or the empty string.
upb_enumdef *e = upb_downcast_enumdef(f->def);
int32_t val = 0;
// Could do a sanity check that the default value does not have embedded
// NULLs.
if (upb_byteregion_len(bytes) == 0) {
upb_value_setint32(&f->defaultval, e->defaultval);
} else {
size_t len;
// ptr is guaranteed to be NULL-terminated because the byteregion was
// created with upb_byteregion_newl().
const char *ptr = upb_byteregion_getptr(bytes, 0, &len);
assert(len == upb_byteregion_len(bytes)); // Should all be in one chunk.
bool success = upb_enumdef_ntoi(e, ptr, &val);
if (!success) {
upb_status_seterrf(
s, "Default enum value (%s) is not a member of the enum", ptr);
return false;
}
upb_value_setint32(&f->defaultval, val);
}
upb_byteregion_free(bytes);
}
return true;
}
bool upb_fielddef_resolvedefault(upb_fielddef *f) {
if (!upb_fielddef_default_is_symbolic(f)) return true;
upb_byteregion *bytes = upb_value_getbyteregion(f->defaultval);
const upb_enumdef *e = upb_downcast_enumdef(upb_fielddef_subdef(f));
assert(bytes); // Points to either a real default or the empty string.
assert(e);
if (upb_byteregion_len(bytes) == 0) {
// The "default default" for an enum is the first defined value.
upb_value_setint32(&f->defaultval, e->defaultval);
} else {
size_t len;
int32_t val = 0;
// ptr is guaranteed to be NULL-terminated because the byteregion was
// created with upb_byteregion_newl().
const char *ptr = upb_byteregion_getptr(
bytes, upb_byteregion_startofs(bytes), &len);
assert(len == upb_byteregion_len(bytes)); // Should all be in one chunk
if (!upb_enumdef_ntoi(e, ptr, &val)) {
return false;
}
upb_value_setint32(&f->defaultval, val);
}
f->default_is_string = false;
upb_byteregion_free(bytes);
return true;
}
static bool upb_trypullbuf(upb_decoder *d) {
assert(upb_decoder_bufleft(d) == 0);
upb_decoder_skiptonewbuf(d, upb_decoder_offset(d));
if (upb_byteregion_available(d->input, d->bufstart_ofs) == 0) {
switch (upb_byteregion_fetch(d->input)) {
case UPB_BYTE_OK:
assert(upb_byteregion_available(d->input, d->bufstart_ofs) > 0);
break;
case UPB_BYTE_EOF: return false;
case UPB_BYTE_ERROR: upb_decoder_abortjmp(d, "I/O error in input");
// Decoder resuming is not yet supported.
case UPB_BYTE_WOULDBLOCK:
upb_decoder_abortjmp(d, "Input returned WOULDBLOCK");
}
}
size_t len;
d->buf = upb_byteregion_getptr(d->input, d->bufstart_ofs, &len);
assert(len > 0);
d->ptr = d->buf;
d->end = d->buf + len;
upb_decoder_setmsgend(d);
#ifdef UPB_USE_JIT_X64
// If we start parsing a value, we can parse up to 20 bytes without
// having to bounds-check anything (2 10-byte varints). Since the
// JIT bounds-checks only *between* values (and for strings), the
// JIT bails if there are not 20 bytes available.
d->jit_end = d->end - 20;
#endif
assert(upb_decoder_bufleft(d) > 0);
return true;
}
upb_fielddef *upb_fielddef_dup(const upb_fielddef *f, const void *owner) {
upb_fielddef *newf = upb_fielddef_new(owner);
if (!newf) return NULL;
upb_fielddef_settype(newf, upb_fielddef_type(f));
upb_fielddef_setlabel(newf, upb_fielddef_label(f));
upb_fielddef_setnumber(newf, upb_fielddef_number(f));
upb_fielddef_setname(newf, upb_fielddef_name(f));
if (f->default_is_string) {
upb_byteregion *r = upb_value_getbyteregion(upb_fielddef_default(f));
size_t len;
const char *ptr = upb_byteregion_getptr(r, 0, &len);
assert(len == upb_byteregion_len(r));
upb_fielddef_setdefaultstr(newf, ptr, len);
} else {
upb_fielddef_setdefault(newf, upb_fielddef_default(f));
}
const char *srcname;
if (f->subdef_is_symbolic) {
srcname = f->sub.name; // Might be NULL.
} else {
srcname = f->sub.def ? upb_def_fullname(f->sub.def) : NULL;
}
if (srcname) {
char *newname = malloc(strlen(f->sub.def->fullname) + 2);
if (!newname) {
upb_fielddef_unref(newf, owner);
return NULL;
}
strcpy(newname, ".");
strcat(newname, f->sub.def->fullname);
upb_fielddef_setsubdefname(newf, newname);
free(newname);
}
return newf;
}
