// Parses a tag and jumps to the corresponding bytecode instruction for this
// field.
//
// If the tag is unknown (or the wire type doesn't match), parses the field as
// unknown. If the tag is a valid ENDGROUP tag, jumps to the bytecode
// instruction for the end of message.
static int32_t dispatch(upb_pbdecoder *d) {
upb_inttable *dispatch = d->top->dispatch;
// Decode tag.
uint32_t tag;
CHECK_RETURN(decode_v32(d, &tag));
uint8_t wire_type = tag & 0x7;
uint32_t fieldnum = tag >> 3;
// Lookup tag. Because of packed/non-packed compatibility, we have to
// check the wire type against two possibilities.
upb_value val;
if (upb_inttable_lookup32(dispatch, fieldnum, &val)) {
uint64_t v = upb_value_getuint64(val);
if (wire_type == (v & 0xff)) {
d->pc = d->top->base + (v >> 16);
return DECODE_OK;
} else if (wire_type == ((v >> 8) & 0xff)) {
static void goto_endmsg(upb_pbdecoder *d) {
upb_value v;
bool found = upb_inttable_lookup32(d->top->dispatch, DISPATCH_ENDMSG, &v);
UPB_ASSERT_VAR(found, found);
d->pc = d->top->base + upb_value_getuint64(v);
}
const upb_fielddef *upb_msgdef_itof(const upb_msgdef *m, uint32_t i) {
upb_value val;
return upb_inttable_lookup32(&m->itof, i, &val) ?
upb_value_getptr(val) : NULL;
}
const char *upb_enumdef_iton(const upb_enumdef *def, int32_t num) {
upb_value v;
return upb_inttable_lookup32(&def->iton, num, &v) ?
upb_value_getcstr(v) : NULL;
}
const upb_fielddef *upb_msgdef_itof(const upb_msgdef *m, uint32_t i) {
const upb_value *val = upb_inttable_lookup32(&m->itof, i);
return val ? (const upb_fielddef*)upb_value_getptr(*val) : NULL;
}
const char *upb_enumdef_iton(const upb_enumdef *def, int32_t num) {
const upb_value *v = upb_inttable_lookup32(&def->iton, num);
return v ? upb_value_getcstr(*v) : NULL;
}
