C++ (Cpp) upb_handlers_msgdefの例

コード例 #1

ファイル: encoder.c プロジェクト: gityf/upb

static void newhandlers_callback(const void *closure, upb_handlers *h) {
  UPB_UNUSED(closure);

  upb_handlers_setstartmsg(h, startmsg, NULL);
  upb_handlers_setendmsg(h, endmsg, NULL);

  const upb_msgdef *m = upb_handlers_msgdef(h);
  upb_msg_field_iter i;
  for(upb_msg_field_begin(&i, m);
      !upb_msg_field_done(&i);
      upb_msg_field_next(&i)) {
    const upb_fielddef *f = upb_msg_iter_field(&i);
    bool packed = upb_fielddef_isseq(f) && upb_fielddef_isprimitive(f) &&
                  upb_fielddef_packed(f);
    upb_handlerattr attr;
    upb_wiretype_t wt =
        packed ? UPB_WIRE_TYPE_DELIMITED
               : upb_pb_native_wire_types[upb_fielddef_descriptortype(f)];

    // Pre-encode the tag for this field.
    new_tag(h, f, wt, &attr);

    if (packed) {
      upb_handlers_setstartseq(h, f, encode_startdelimfield, &attr);
      upb_handlers_setendseq(h, f, encode_enddelimfield, &attr);
    }

#define T(upper, lower, upbtype)                                     \
  case UPB_DESCRIPTOR_TYPE_##upper:                                  \
    if (packed) {                                                    \
      upb_handlers_set##upbtype(h, f, encode_packed_##lower, &attr); \
    } else {                                                         \
      upb_handlers_set##upbtype(h, f, encode_scalar_##lower, &attr); \
    }                                                                \
    break;

    switch (upb_fielddef_descriptortype(f)) {
      T(DOUBLE,   double,   double);
      T(FLOAT,    float,    float);
      T(INT64,    int64,    int64);
      T(INT32,    int32,    int32);
      T(FIXED64,  fixed64,  uint64);
      T(FIXED32,  fixed32,  uint32);
      T(BOOL,     bool,     bool);
      T(UINT32,   uint32,   uint32);
      T(UINT64,   uint64,   uint64);
      T(ENUM,     enum,     int32);
      T(SFIXED32, sfixed32, int32);
      T(SFIXED64, sfixed64, int64);
      T(SINT32,   sint32,   int32);
      T(SINT64,   sint64,   int64);
      case UPB_DESCRIPTOR_TYPE_STRING:
      case UPB_DESCRIPTOR_TYPE_BYTES:
        upb_handlers_setstartstr(h, f, encode_startstr, &attr);
        upb_handlers_setendstr(h, f, encode_enddelimfield, &attr);
        upb_handlers_setstring(h, f, encode_strbuf, &attr);
        break;
      case UPB_DESCRIPTOR_TYPE_MESSAGE:
        upb_handlers_setstartsubmsg(h, f, encode_startdelimfield, &attr);
        upb_handlers_setendsubmsg(h, f, encode_enddelimfield, &attr);
        break;
      case UPB_DESCRIPTOR_TYPE_GROUP: {
        // Endgroup takes a different tag (wire_type = END_GROUP).
        upb_handlerattr attr2;
        new_tag(h, f, UPB_WIRE_TYPE_END_GROUP, &attr2);

        upb_handlers_setstartsubmsg(h, f, encode_startgroup, &attr);
        upb_handlers_setendsubmsg(h, f, encode_endgroup, &attr2);

        upb_handlerattr_uninit(&attr2);
        break;
      }
    }

#undef T

    upb_handlerattr_uninit(&attr);
  }
}

コード例 #2

ファイル: reader.c プロジェクト: YauzZ/upb

static const upb_fielddef *f(const upb_handlers *h, const char *name) {
  const upb_fielddef *ret = upb_msgdef_ntof(upb_handlers_msgdef(h), name);
  assert(ret);
  return ret;
}