Fast CDR  Version 2.2.5
Fast CDR
Loading...
Searching...
No Matches
CdrSizeCalculator.hpp
1// Copyright 2023 Proyectos y Sistemas de Mantenimiento SL (eProsima).
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#ifndef _FASTCDR_CDRSIZECALCULATOR_HPP_
16#define _FASTCDR_CDRSIZECALCULATOR_HPP_
17
18#include <array>
19#include <bitset>
20#include <cstdint>
21#include <limits>
22#include <map>
23#include <vector>
24
25#include "fastcdr_dll.h"
26
27#include "CdrEncoding.hpp"
28#include "cdr/fixed_size_string.hpp"
29#include "detail/container_recursive_inspector.hpp"
30#include "exceptions/BadParamException.h"
31#include "xcdr/external.hpp"
32#include "xcdr/MemberId.hpp"
33#include "xcdr/optional.hpp"
34
35namespace eprosima {
36namespace fastcdr {
37
38class CdrSizeCalculator;
39
40template<class _T>
43 const _T&,
44 size_t&);
45
52{
53public:
54
61 CdrVersion cdr_version);
62
70 CdrVersion cdr_version,
71 EncodingAlgorithmFlag encoding);
72
77 Cdr_DllAPI CdrVersion get_cdr_version() const;
78
84
92 template<class _T, typename std::enable_if<!std::is_enum<_T>::value>::type* = nullptr, typename = void>
94 const _T& data,
95 size_t& current_alignment)
96 {
97 return eprosima::fastcdr::calculate_serialized_size(*this, data, current_alignment);
98 }
99
107 template<class _T,
108 typename std::enable_if<std::is_enum<_T>::value>::type* = nullptr,
109 typename std::enable_if<std::is_same<typename std::underlying_type<_T>::type,
110 int32_t>::value>::type* = nullptr>
112 const _T& data,
113 size_t& current_alignment)
114 {
115 return calculate_serialized_size(static_cast<int32_t>(data), current_alignment);
116 }
117
125 template<class _T,
126 typename std::enable_if<std::is_enum<_T>::value>::type* = nullptr,
127 typename std::enable_if<std::is_same<typename std::underlying_type<_T>::type,
128 uint32_t>::value>::type* = nullptr>
130 const _T& data,
131 size_t& current_alignment)
132 {
133 return calculate_serialized_size(static_cast<uint32_t>(data), current_alignment);
134 }
135
143 template<class _T,
144 typename std::enable_if<std::is_enum<_T>::value>::type* = nullptr,
145 typename std::enable_if<std::is_same<typename std::underlying_type<_T>::type,
146 int16_t>::value>::type* = nullptr>
148 const _T& data,
149 size_t& current_alignment)
150 {
151 return calculate_serialized_size(static_cast<int16_t>(data), current_alignment);
152 }
153
161 template<class _T,
162 typename std::enable_if<std::is_enum<_T>::value>::type* = nullptr,
163 typename std::enable_if<std::is_same<typename std::underlying_type<_T>::type,
164 uint16_t>::value>::type* = nullptr>
166 const _T& data,
167 size_t& current_alignment)
168 {
169 return calculate_serialized_size(static_cast<uint16_t>(data), current_alignment);
170 }
171
179 template<class _T,
180 typename std::enable_if<std::is_enum<_T>::value>::type* = nullptr,
181 typename std::enable_if<std::is_same<typename std::underlying_type<_T>::type,
182 int8_t>::value>::type* = nullptr>
184 const _T& data,
185 size_t& current_alignment)
186 {
187 return calculate_serialized_size(static_cast<int8_t>(data), current_alignment);
188 }
189
197 template<class _T,
198 typename std::enable_if<std::is_enum<_T>::value>::type* = nullptr,
199 typename std::enable_if<std::is_same<typename std::underlying_type<_T>::type,
200 uint8_t>::value>::type* = nullptr>
202 const _T& data,
203 size_t& current_alignment)
204 {
205 return calculate_serialized_size(static_cast<uint8_t>(data), current_alignment);
206 }
207
214 TEMPLATE_SPEC
216 const int8_t& data,
217 size_t& current_alignment)
218 {
219 static_cast<void>(data);
220 ++current_alignment;
221 return 1;
222 }
223
230 TEMPLATE_SPEC
232 const uint8_t& data,
233 size_t& current_alignment)
234 {
235 static_cast<void>(data);
236 ++current_alignment;
237 return 1;
238 }
239
246 TEMPLATE_SPEC
248 const char& data,
249 size_t& current_alignment)
250 {
251 static_cast<void>(data);
252 ++current_alignment;
253 return 1;
254 }
255
262 TEMPLATE_SPEC
264 const bool& data,
265 size_t& current_alignment)
266 {
267 static_cast<void>(data);
268 ++current_alignment;
269 return 1;
270 }
271
278 TEMPLATE_SPEC
280 const wchar_t& data,
281 size_t& current_alignment)
282 {
283 static_cast<void>(data);
284 size_t calculated_size {2 + alignment(current_alignment, 2)};
285 current_alignment += calculated_size;
286 return calculated_size;
287 }
288
295 TEMPLATE_SPEC
297 const int16_t& data,
298 size_t& current_alignment)
299 {
300 static_cast<void>(data);
301 size_t calculated_size {2 + alignment(current_alignment, 2)};
302 current_alignment += calculated_size;
303 return calculated_size;
304 }
305
312 TEMPLATE_SPEC
314 const uint16_t& data,
315 size_t& current_alignment)
316 {
317 static_cast<void>(data);
318 size_t calculated_size {2 + alignment(current_alignment, 2)};
319 current_alignment += calculated_size;
320 return calculated_size;
321 }
322
329 TEMPLATE_SPEC
331 const int32_t& data,
332 size_t& current_alignment)
333 {
334 static_cast<void>(data);
335 size_t calculated_size {4 + alignment(current_alignment, 4)};
336 current_alignment += calculated_size;
337 return calculated_size;
338 }
339
346 TEMPLATE_SPEC
348 const uint32_t& data,
349 size_t& current_alignment)
350 {
351 static_cast<void>(data);
352 size_t calculated_size {4 + alignment(current_alignment, 4)};
353 current_alignment += calculated_size;
354 return calculated_size;
355 }
356
363 TEMPLATE_SPEC
365 const int64_t& data,
366 size_t& current_alignment)
367 {
368 static_cast<void>(data);
369 size_t calculated_size {8 + alignment(current_alignment, align64_)};
370 current_alignment += calculated_size;
371 return calculated_size;
372 }
373
380 TEMPLATE_SPEC
382 const uint64_t& data,
383 size_t& current_alignment)
384 {
385 static_cast<void>(data);
386 size_t calculated_size {8 + alignment(current_alignment, align64_)};
387 current_alignment += calculated_size;
388 return calculated_size;
389 }
390
397 TEMPLATE_SPEC
399 const float& data,
400 size_t& current_alignment)
401 {
402 static_cast<void>(data);
403 size_t calculated_size {4 + alignment(current_alignment, 4)};
404 current_alignment += calculated_size;
405 return calculated_size;
406 }
407
414 TEMPLATE_SPEC
416 const double& data,
417 size_t& current_alignment)
418 {
419 static_cast<void>(data);
420 size_t calculated_size {8 + alignment(current_alignment, align64_)};
421 current_alignment += calculated_size;
422 return calculated_size;
423 }
424
431 TEMPLATE_SPEC
433 const long double& data,
434 size_t& current_alignment)
435 {
436 static_cast<void>(data);
437 size_t calculated_size {16 + alignment(current_alignment, align64_)};
438 current_alignment += calculated_size;
439 return calculated_size;
440 }
441
448 TEMPLATE_SPEC
450 const std::string& data,
451 size_t& current_alignment)
452 {
453 size_t calculated_size {4 + alignment(current_alignment, 4) + data.size() + 1};
454 current_alignment += calculated_size;
455 serialized_member_size_ = SERIALIZED_MEMBER_SIZE;
456
457 return calculated_size;
458 }
459
466 TEMPLATE_SPEC
468 const std::wstring& data,
469 size_t& current_alignment)
470 {
471 size_t calculated_size {4 + alignment(current_alignment, 4) + data.size() * 2};
472 current_alignment += calculated_size;
473
474 return calculated_size;
475 }
476
483 template <size_t MAX_CHARS>
485 const fixed_string<MAX_CHARS>& data,
486 size_t& current_alignment)
487 {
488 size_t calculated_size {4 + alignment(current_alignment, 4) + data.size() + 1};
489 current_alignment += calculated_size;
490 serialized_member_size_ = SERIALIZED_MEMBER_SIZE;
491
492 return calculated_size;
493 }
494
501 template<class _T, typename std::enable_if<!std::is_enum<_T>::value &&
502 !std::is_arithmetic<_T>::value>::type* = nullptr>
504 const std::vector<_T>& data,
505 size_t& current_alignment)
506 {
507 size_t initial_alignment {current_alignment};
508
509 if (CdrVersion::XCDRv2 == cdr_version_)
510 {
511 // DHEADER
512 current_alignment += 4 + alignment(current_alignment, 4);
513 }
514
515 current_alignment += 4 + alignment(current_alignment, 4);
516
517 size_t calculated_size {current_alignment - initial_alignment};
518 calculated_size += calculate_array_serialized_size(data.data(), data.size(), current_alignment);
519
520 if (CdrVersion::XCDRv2 == cdr_version_)
521 {
522 // Inform DHEADER can be joined with NEXTINT
523 serialized_member_size_ = SERIALIZED_MEMBER_SIZE;
524 }
525
526 return calculated_size;
527 }
528
535 template<class _T, typename std::enable_if<std::is_enum<_T>::value ||
536 std::is_arithmetic<_T>::value>::type* = nullptr>
538 const std::vector<_T>& data,
539 size_t& current_alignment)
540 {
541 size_t initial_alignment {current_alignment};
542
543 current_alignment += 4 + alignment(current_alignment, 4);
544
545 size_t calculated_size {current_alignment - initial_alignment};
546 calculated_size += calculate_array_serialized_size(data.data(), data.size(), current_alignment);
547
548 if (CdrVersion::XCDRv2 == cdr_version_)
549 {
550 serialized_member_size_ = get_serialized_member_size<_T>();
551 }
552
553 return calculated_size;
554 }
555
562 TEMPLATE_SPEC
564 const std::vector<bool>& data,
565 size_t& current_alignment)
566 {
567 size_t calculated_size {data.size() + 4 + alignment(current_alignment, 4)};
568 current_alignment += calculated_size;
569
570 return calculated_size;
571 }
572
579 template<class _T, size_t _Size>
581 const std::array<_T, _Size>& data,
582 size_t& current_alignment)
583 {
584 size_t initial_alignment {current_alignment};
585
586 if (CdrVersion::XCDRv2 == cdr_version_ &&
588 {
589 // DHEADER
590 current_alignment += 4 + alignment(current_alignment, 4);
591 }
592
593 size_t calculated_size {current_alignment - initial_alignment};
594 calculated_size += calculate_array_serialized_size(data.data(), data.size(), current_alignment);
595
596 if (CdrVersion::XCDRv2 == cdr_version_ &&
598 {
599 // Inform DHEADER can be joined with NEXTINT
600 serialized_member_size_ = SERIALIZED_MEMBER_SIZE;
601 }
602
603 return calculated_size;
604 }
605
612 template<class _K, class _V, typename std::enable_if<!std::is_enum<_V>::value &&
613 !std::is_arithmetic<_V>::value>::type* = nullptr>
615 const std::map<_K, _V>& data,
616 size_t& current_alignment)
617 {
618 size_t initial_alignment {current_alignment};
619
620 if (CdrVersion::XCDRv2 == cdr_version_)
621 {
622 // DHEADER
623 current_alignment += 4 + alignment(current_alignment, 4);
624 }
625
626 current_alignment += 4 + alignment(current_alignment, 4);
627
628 size_t calculated_size {current_alignment - initial_alignment};
629 for (auto it = data.begin(); it != data.end(); ++it)
630 {
631 calculated_size += calculate_serialized_size(it->first, current_alignment);
632 calculated_size += calculate_serialized_size(it->second, current_alignment);
633 }
634
635 if (CdrVersion::XCDRv2 == cdr_version_)
636 {
637 // Inform DHEADER can be joined with NEXTINT
638 serialized_member_size_ = SERIALIZED_MEMBER_SIZE;
639 }
640
641 return calculated_size;
642 }
643
650 template<class _K, class _V, typename std::enable_if<std::is_enum<_V>::value ||
651 std::is_arithmetic<_V>::value>::type* = nullptr>
653 const std::map<_K, _V>& data,
654 size_t& current_alignment)
655 {
656 size_t initial_alignment {current_alignment};
657
658 current_alignment += 4 + alignment(current_alignment, 4);
659
660 size_t calculated_size {current_alignment - initial_alignment};
661 for (auto it = data.begin(); it != data.end(); ++it)
662 {
663 calculated_size += calculate_serialized_size(it->first, current_alignment);
664 calculated_size += calculate_serialized_size(it->second, current_alignment);
665 }
666
667 return calculated_size;
668 }
669
676 template<size_t N, typename std::enable_if < (N < 9) > ::type* = nullptr>
677 size_t calculate_serialized_size(
678 const std::bitset<N>& data,
679 size_t& current_alignment)
680 {
681 static_cast<void>(data);
682 ++current_alignment;
683 return 1;
684 }
685
692 template<size_t N, typename std::enable_if < (8 < N && N < 17) > ::type* = nullptr>
693 size_t calculate_serialized_size(
694 const std::bitset<N>& data,
695 size_t& current_alignment)
696 {
697 static_cast<void>(data);
698 size_t calculated_size {2 + alignment(current_alignment, 2)};
699 current_alignment += calculated_size;
700 return calculated_size;
701 }
702
709 template<size_t N, typename std::enable_if < (16 < N && N < 33) > ::type* = nullptr>
710 size_t calculate_serialized_size(
711 const std::bitset<N>& data,
712 size_t& current_alignment)
713 {
714 static_cast<void>(data);
715 size_t calculated_size {4 + alignment(current_alignment, 4)};
716 current_alignment += calculated_size;
717 return calculated_size;
718 }
719
726 template<size_t N, typename std::enable_if < (32 < N && N < 65) > ::type* = nullptr>
727 size_t calculate_serialized_size(
728 const std::bitset<N>& data,
729 size_t& current_alignment)
730 {
731 static_cast<void>(data);
732 size_t calculated_size {8 + alignment(current_alignment, align64_)};
733 current_alignment += calculated_size;
734 return calculated_size;
735 }
736
743 template<class _T>
745 const optional<_T>& data,
746 size_t& current_alignment)
747 {
748 size_t initial_alignment = current_alignment;
749
750 if (CdrVersion::XCDRv2 == cdr_version_ &&
751 EncodingAlgorithmFlag::PL_CDR2 != current_encoding_)
752 {
753 // Take into account the boolean is_present;
754 ++current_alignment;
755 }
756
757 size_t calculated_size {current_alignment - initial_alignment};
758
759 if (data.has_value())
760 {
761 calculated_size += calculate_serialized_size(data.value(), current_alignment);
762 }
763
764 return calculated_size;
765 }
766
774 template<class _T>
776 const external<_T>& data,
777 size_t& current_alignment)
778 {
779 if (!data)
780 {
781 throw exception::BadParamException("External member is null");
782 }
783
784 return calculate_serialized_size(*data, current_alignment);
785 }
786
795 template<class _T>
797 const _T* data,
798 size_t num_elements,
799 size_t& current_alignment)
800 {
801 size_t calculated_size {0};
802
803 for (size_t count = 0; count < num_elements; ++count)
804 {
805 calculated_size += calculate_serialized_size(data[count], current_alignment);
806 }
807
808 return calculated_size;
809 }
810
818 TEMPLATE_SPEC
820 const int8_t* data,
821 size_t num_elements,
822 size_t& current_alignment)
823 {
824 static_cast<void>(data);
825 current_alignment += num_elements;
826 return num_elements;
827 }
828
836 TEMPLATE_SPEC
838 const uint8_t* data,
839 size_t num_elements,
840 size_t& current_alignment)
841 {
842 static_cast<void>(data);
843 current_alignment += num_elements;
844 return num_elements;
845 }
846
854 TEMPLATE_SPEC
856 const char* data,
857 size_t num_elements,
858 size_t& current_alignment)
859 {
860 static_cast<void>(data);
861 current_alignment += num_elements;
862 return num_elements;
863 }
864
872 TEMPLATE_SPEC
874 const wchar_t* data,
875 size_t num_elements,
876 size_t& current_alignment)
877 {
878 static_cast<void>(data);
879 size_t calculated_size {num_elements* 2 + alignment(current_alignment, 2)};
880 current_alignment += calculated_size;
881 return calculated_size;
882 }
883
891 TEMPLATE_SPEC
893 const int16_t* data,
894 size_t num_elements,
895 size_t& current_alignment)
896 {
897 static_cast<void>(data);
898 size_t calculated_size {num_elements* 2 + alignment(current_alignment, 2)};
899 current_alignment += calculated_size;
900 return calculated_size;
901 }
902
910 TEMPLATE_SPEC
912 const uint16_t* data,
913 size_t num_elements,
914 size_t& current_alignment)
915 {
916 static_cast<void>(data);
917 size_t calculated_size {num_elements* 2 + alignment(current_alignment, 2)};
918 current_alignment += calculated_size;
919 return calculated_size;
920 }
921
929 TEMPLATE_SPEC
931 const int32_t* data,
932 size_t num_elements,
933 size_t& current_alignment)
934 {
935 static_cast<void>(data);
936 size_t calculated_size {num_elements* 4 + alignment(current_alignment, 4)};
937 current_alignment += calculated_size;
938 return calculated_size;
939 }
940
948 TEMPLATE_SPEC
950 const uint32_t* data,
951 size_t num_elements,
952 size_t& current_alignment)
953 {
954 static_cast<void>(data);
955 size_t calculated_size {num_elements* 4 + alignment(current_alignment, 4)};
956 current_alignment += calculated_size;
957 return calculated_size;
958 }
959
967 TEMPLATE_SPEC
969 const int64_t* data,
970 size_t num_elements,
971 size_t& current_alignment)
972 {
973 static_cast<void>(data);
974 size_t calculated_size {num_elements* 8 + alignment(current_alignment, align64_)};
975 current_alignment += calculated_size;
976 return calculated_size;
977 }
978
986 TEMPLATE_SPEC
988 const uint64_t* data,
989 size_t num_elements,
990 size_t& current_alignment)
991 {
992 static_cast<void>(data);
993 size_t calculated_size {num_elements* 8 + alignment(current_alignment, align64_)};
994 current_alignment += calculated_size;
995 return calculated_size;
996 }
997
1005 TEMPLATE_SPEC
1007 const float* data,
1008 size_t num_elements,
1009 size_t& current_alignment)
1010 {
1011 static_cast<void>(data);
1012 size_t calculated_size {num_elements* 4 + alignment(current_alignment, 4)};
1013 current_alignment += calculated_size;
1014 return calculated_size;
1015 }
1016
1024 TEMPLATE_SPEC
1026 const double* data,
1027 size_t num_elements,
1028 size_t& current_alignment)
1029 {
1030 static_cast<void>(data);
1031 size_t calculated_size {num_elements* 8 + alignment(current_alignment, align64_)};
1032 current_alignment += calculated_size;
1033 return calculated_size;
1034 }
1035
1043 TEMPLATE_SPEC
1045 const long double* data,
1046 size_t num_elements,
1047 size_t& current_alignment)
1048 {
1049 static_cast<void>(data);
1050 size_t calculated_size {num_elements* 16 + alignment(current_alignment, align64_)};
1051 current_alignment += calculated_size;
1052 return calculated_size;
1053 }
1054
1062 template<class _T, size_t _N>
1064 const std::array<_T, _N>* data,
1065 size_t num_elements,
1066 size_t& current_alignment)
1067 {
1068 return calculate_array_serialized_size(data->data(), num_elements * data->size(), current_alignment);
1069 }
1070
1077 template<class _T, typename std::enable_if<std::is_enum<_T>::value ||
1078 std::is_arithmetic<_T>::value>::type* = nullptr>
1080 const std::vector<_T>& data,
1081 size_t& current_alignment)
1082 {
1083 return calculate_array_serialized_size(data.data(), data.size(), current_alignment);
1084 }
1085
1092 template<class _T, typename std::enable_if<!std::is_enum<_T>::value &&
1093 !std::is_arithmetic<_T>::value>::type* = nullptr>
1095 const std::vector<_T>& data,
1096 size_t& current_alignment)
1097 {
1098 size_t initial_alignment {current_alignment};
1099
1100 if (CdrVersion::XCDRv2 == cdr_version_)
1101 {
1102 // DHEADER
1103 current_alignment += 4 + alignment(current_alignment, 4);
1104 }
1105
1106 size_t calculated_size {current_alignment - initial_alignment};
1107 calculated_size += calculate_array_serialized_size(data.data(), data.size(), current_alignment);
1108
1109 if (CdrVersion::XCDRv2 == cdr_version_)
1110 {
1111 // Inform DHEADER can be joined with NEXTINT
1112 serialized_member_size_ = SERIALIZED_MEMBER_SIZE;
1113 }
1114
1115 return calculated_size;
1116 }
1117
1124 TEMPLATE_SPEC
1126 const std::vector<bool>& data,
1127 size_t& current_alignment)
1128 {
1129 current_alignment += data.size();
1130 return data.size();
1131 }
1132
1141 template<class _T>
1143 const MemberId& id,
1144 const _T& data,
1145 size_t& current_alignment)
1146 {
1147 size_t initial_alignment {current_alignment};
1148
1149 if (EncodingAlgorithmFlag::PL_CDR == current_encoding_ ||
1150 EncodingAlgorithmFlag::PL_CDR2 == current_encoding_)
1151 {
1152 // Align to 4 for the XCDR header before calculating the data serialized size.
1153 current_alignment += alignment(current_alignment, 4);
1154 }
1155
1156 size_t prev_size {current_alignment - initial_alignment};
1157 size_t extra_size {0};
1158
1159 if (EncodingAlgorithmFlag::PL_CDR == current_encoding_)
1160 {
1161 current_alignment = 0;
1162 }
1163
1164 size_t calculated_size {calculate_serialized_size(data, current_alignment)};
1165
1166 if (CdrVersion::XCDRv2 == cdr_version_ && EncodingAlgorithmFlag::PL_CDR2 == current_encoding_ &&
1167 0 < calculated_size)
1168 {
1169
1170 if (8 < calculated_size ||
1171 (1 != calculated_size && 2 != calculated_size && 4 != calculated_size &&
1172 8 != calculated_size))
1173 {
1174 extra_size = 8; // Long EMHEADER.
1175 if (NO_SERIALIZED_MEMBER_SIZE != serialized_member_size_)
1176 {
1177 calculated_size -= 4; // Join NEXTINT and DHEADER.
1178 }
1179 }
1180 else
1181 {
1182 extra_size = 4; // EMHEADER;
1183 }
1184 }
1185 else if (CdrVersion::XCDRv1 == cdr_version_ && EncodingAlgorithmFlag::PL_CDR == current_encoding_ &&
1186 0 < calculated_size)
1187 {
1188 extra_size = 4; // ShortMemberHeader
1189
1190 if (0x3F00 < id.id || calculated_size > std::numeric_limits<uint16_t>::max())
1191 {
1192 extra_size += 8; // LongMemberHeader
1193 }
1194
1195 }
1196
1197 calculated_size += prev_size + extra_size;
1198 if (EncodingAlgorithmFlag::PL_CDR != current_encoding_)
1199 {
1200 current_alignment += extra_size;
1201 }
1202
1203 serialized_member_size_ = NO_SERIALIZED_MEMBER_SIZE;
1204
1205 return calculated_size;
1206 }
1207
1216 template<class _T>
1218 const MemberId& id,
1219 const optional<_T>& data,
1220 size_t& current_alignment)
1221 {
1222 size_t initial_alignment = current_alignment;
1223
1224 if (CdrVersion::XCDRv2 != cdr_version_ ||
1225 EncodingAlgorithmFlag::PL_CDR2 == current_encoding_)
1226 {
1227 if (data.has_value() || EncodingAlgorithmFlag::PLAIN_CDR == current_encoding_)
1228 {
1229 // Align to 4 for the XCDR header before calculating the data serialized size.
1230 current_alignment += alignment(current_alignment, 4);
1231 }
1232 }
1233
1234 size_t prev_size = {current_alignment - initial_alignment};
1235 size_t extra_size {0};
1236
1237 if (CdrVersion::XCDRv1 == cdr_version_ &&
1238 (data.has_value() || EncodingAlgorithmFlag::PLAIN_CDR == current_encoding_))
1239 {
1240 current_alignment = 0;
1241 }
1242
1243 size_t calculated_size {calculate_serialized_size(data, current_alignment)};
1244
1245 if (CdrVersion::XCDRv2 == cdr_version_ && EncodingAlgorithmFlag::PL_CDR2 == current_encoding_ &&
1246 0 < calculated_size)
1247 {
1248 if (8 < calculated_size)
1249 {
1250 extra_size = 8; // Long EMHEADER.
1251 if (NO_SERIALIZED_MEMBER_SIZE != serialized_member_size_)
1252 {
1253 extra_size -= 4; // Join NEXTINT and DHEADER.
1254 }
1255 }
1256 else
1257 {
1258 extra_size = 4; // EMHEADER;
1259 }
1260 }
1261 else if (CdrVersion::XCDRv1 == cdr_version_ &&
1262 (0 < calculated_size || EncodingAlgorithmFlag::PLAIN_CDR == current_encoding_))
1263 {
1264 extra_size = 4; // ShortMemberHeader
1265
1266 if (0x3F00 < id.id || calculated_size > std::numeric_limits<uint16_t>::max())
1267 {
1268 extra_size += 8; // LongMemberHeader
1269 }
1270
1271 }
1272
1273 calculated_size += prev_size + extra_size;
1274 if (CdrVersion::XCDRv1 != cdr_version_)
1275 {
1276 current_alignment += extra_size;
1277 }
1278
1279
1280 return calculated_size;
1281 }
1282
1290 EncodingAlgorithmFlag new_encoding,
1291 size_t& current_alignment);
1292
1300 EncodingAlgorithmFlag new_encoding,
1301 size_t& current_alignment);
1302
1303private:
1304
1305 CdrSizeCalculator() = delete;
1306
1307 CdrVersion cdr_version_ {CdrVersion::XCDRv2};
1308
1310
1311 enum SerializedMemberSizeForNextInt
1312 {
1313 NO_SERIALIZED_MEMBER_SIZE,
1314 SERIALIZED_MEMBER_SIZE,
1315 SERIALIZED_MEMBER_SIZE_4,
1316 SERIALIZED_MEMBER_SIZE_8
1317 }
1319 serialized_member_size_ {NO_SERIALIZED_MEMBER_SIZE};
1320
1322 size_t align64_ {4};
1323
1324 inline size_t alignment(
1325 size_t current_alignment,
1326 size_t data_size) const
1327 {
1328 return (data_size - (current_alignment % data_size)) & (data_size - 1);
1329 }
1330
1331 template<class _T, typename std::enable_if<std::is_enum<_T>::value ||
1332 std::is_arithmetic<_T>::value>::type* = nullptr>
1333 constexpr SerializedMemberSizeForNextInt get_serialized_member_size() const
1334 {
1335 return (1 == sizeof(_T) ? SERIALIZED_MEMBER_SIZE :
1336 (4 == sizeof(_T) ? SERIALIZED_MEMBER_SIZE_4 :
1337 (8 == sizeof(_T) ? SERIALIZED_MEMBER_SIZE_8 : NO_SERIALIZED_MEMBER_SIZE)));
1338 }
1339
1340};
1341
1342} // namespace fastcdr
1343} // namespace eprosima
1344
1345#endif // _FASTCDR_CDRSIZECALCULATOR_HPP_
This class offers an interface to calculate the encoded size of a type serialized using a support enc...
Definition CdrSizeCalculator.hpp:52
size_t calculate_serialized_size(const _T &data, size_t &current_alignment)
Generic template which calculates the encoded size of an instance of an unknown type.
Definition CdrSizeCalculator.hpp:93
Cdr_DllAPI CdrSizeCalculator(CdrVersion cdr_version)
Constructor.
Cdr_DllAPI EncodingAlgorithmFlag get_encoding() const
Retrieves the current encoding algorithm used by the instance.
TEMPLATE_SPEC size_t calculate_array_serialized_size(const uint64_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of uint64_t.
Definition CdrSizeCalculator.hpp:987
TEMPLATE_SPEC size_t calculate_array_serialized_size(const uint16_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of uint16_t.
Definition CdrSizeCalculator.hpp:911
Cdr_DllAPI size_t end_calculate_type_serialized_size(EncodingAlgorithmFlag new_encoding, size_t &current_alignment)
Indicates the ending of a constructed type.
TEMPLATE_SPEC size_t calculate_array_serialized_size(const uint32_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of uint32_t.
Definition CdrSizeCalculator.hpp:949
TEMPLATE_SPEC size_t calculate_serialized_size(const uint8_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an uint8_t.
Definition CdrSizeCalculator.hpp:231
TEMPLATE_SPEC size_t calculate_array_serialized_size(const int64_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of int64_t.
Definition CdrSizeCalculator.hpp:968
TEMPLATE_SPEC size_t calculate_array_serialized_size(const uint8_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of uint8_t.
Definition CdrSizeCalculator.hpp:837
size_t calculate_serialized_size(const fixed_string< MAX_CHARS > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a fixed_string.
Definition CdrSizeCalculator.hpp:484
TEMPLATE_SPEC size_t calculate_array_serialized_size(const int32_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of int32_t.
Definition CdrSizeCalculator.hpp:930
size_t calculate_array_serialized_size(const std::array< _T, _N > *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a multi-dimensional array.
Definition CdrSizeCalculator.hpp:1063
size_t calculate_array_serialized_size(const _T *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of unknown type.
Definition CdrSizeCalculator.hpp:796
size_t calculate_serialized_size(const optional< _T > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an optional type.
Definition CdrSizeCalculator.hpp:744
TEMPLATE_SPEC size_t calculate_array_serialized_size(const int8_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of int8_t.
Definition CdrSizeCalculator.hpp:819
TEMPLATE_SPEC size_t calculate_array_serialized_size(const long double *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of long double.
Definition CdrSizeCalculator.hpp:1044
TEMPLATE_SPEC size_t calculate_serialized_size(const long double &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a long double.
Definition CdrSizeCalculator.hpp:432
TEMPLATE_SPEC size_t calculate_array_serialized_size(const int16_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of int16_t.
Definition CdrSizeCalculator.hpp:892
size_t calculate_array_serialized_size(const std::vector< _T > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an std::vector of primitives as an array.
Definition CdrSizeCalculator.hpp:1079
TEMPLATE_SPEC size_t calculate_serialized_size(const int8_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an int8_t.
Definition CdrSizeCalculator.hpp:215
Cdr_DllAPI size_t begin_calculate_type_serialized_size(EncodingAlgorithmFlag new_encoding, size_t &current_alignment)
Indicates a new constructed type will be calculated.
TEMPLATE_SPEC size_t calculate_serialized_size(const double &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a double.
Definition CdrSizeCalculator.hpp:415
TEMPLATE_SPEC size_t calculate_array_serialized_size(const char *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of char.
Definition CdrSizeCalculator.hpp:855
size_t calculate_member_serialized_size(const MemberId &id, const _T &data, size_t &current_alignment)
Generic template which calculates the encoded size of the constructed type's member of a unknown type...
Definition CdrSizeCalculator.hpp:1142
TEMPLATE_SPEC size_t calculate_serialized_size(const int16_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a int16_t.
Definition CdrSizeCalculator.hpp:296
TEMPLATE_SPEC size_t calculate_serialized_size(const std::vector< bool > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a sequence of bool.
Definition CdrSizeCalculator.hpp:563
TEMPLATE_SPEC size_t calculate_array_serialized_size(const std::vector< bool > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an std::vector of bool as an array.
Definition CdrSizeCalculator.hpp:1125
size_t calculate_serialized_size(const std::array< _T, _Size > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array.
Definition CdrSizeCalculator.hpp:580
TEMPLATE_SPEC size_t calculate_array_serialized_size(const float *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of float.
Definition CdrSizeCalculator.hpp:1006
TEMPLATE_SPEC size_t calculate_serialized_size(const float &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a float.
Definition CdrSizeCalculator.hpp:398
TEMPLATE_SPEC size_t calculate_array_serialized_size(const double *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of double.
Definition CdrSizeCalculator.hpp:1025
TEMPLATE_SPEC size_t calculate_serialized_size(const int32_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a int32_t.
Definition CdrSizeCalculator.hpp:330
TEMPLATE_SPEC size_t calculate_array_serialized_size(const wchar_t *data, size_t num_elements, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an array of wchar.
Definition CdrSizeCalculator.hpp:873
TEMPLATE_SPEC size_t calculate_serialized_size(const uint64_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a uint64_t.
Definition CdrSizeCalculator.hpp:381
TEMPLATE_SPEC size_t calculate_serialized_size(const std::wstring &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a std::wstring.
Definition CdrSizeCalculator.hpp:467
TEMPLATE_SPEC size_t calculate_serialized_size(const bool &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a bool.
Definition CdrSizeCalculator.hpp:263
TEMPLATE_SPEC size_t calculate_serialized_size(const char &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a char.
Definition CdrSizeCalculator.hpp:247
TEMPLATE_SPEC size_t calculate_serialized_size(const uint32_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a uint32_t.
Definition CdrSizeCalculator.hpp:347
size_t calculate_serialized_size(const std::vector< _T > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a sequence of non-primitives.
Definition CdrSizeCalculator.hpp:503
TEMPLATE_SPEC size_t calculate_serialized_size(const int64_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a int64_t.
Definition CdrSizeCalculator.hpp:364
Cdr_DllAPI CdrVersion get_cdr_version() const
Retrieves the version of the encoding algorithm used by the instance.
TEMPLATE_SPEC size_t calculate_serialized_size(const std::string &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a std::string.
Definition CdrSizeCalculator.hpp:449
size_t calculate_serialized_size(const std::map< _K, _V > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a map of non-primitives.
Definition CdrSizeCalculator.hpp:614
size_t calculate_serialized_size(const external< _T > &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of an external type.
Definition CdrSizeCalculator.hpp:775
TEMPLATE_SPEC size_t calculate_serialized_size(const wchar_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a wchar.
Definition CdrSizeCalculator.hpp:279
size_t calculate_member_serialized_size(const MemberId &id, const optional< _T > &data, size_t &current_alignment)
Generic template which calculates the encoded size of the constructed type's member of type optional.
Definition CdrSizeCalculator.hpp:1217
Cdr_DllAPI CdrSizeCalculator(CdrVersion cdr_version, EncodingAlgorithmFlag encoding)
Constructor.
TEMPLATE_SPEC size_t calculate_serialized_size(const uint16_t &data, size_t &current_alignment)
Specific template which calculates the encoded size of an instance of a uint16_t.
Definition CdrSizeCalculator.hpp:313
Definition MemberId.hpp:28
This class is thrown as an exception when an invalid parameter is being serialized.
Definition BadParamException.h:28
This class template manages an external member, a member declared to be external to the storage of a ...
Definition external.hpp:30
This class template manages an optional contained value, i.e.
Definition optional.hpp:47
T & value() &
Returns the contained value.
Definition optional.hpp:129
bool has_value() const
Checks whether the optional contains a value.
Definition optional.hpp:196
EncodingAlgorithmFlag
This enumeration represents the supported XCDR encoding algorithms.
Definition CdrEncoding.hpp:38
@ PL_CDR2
Specifies that the content is PL_CDR2.
Definition CdrEncoding.hpp:48
@ PL_CDR
Specifies that the content is PL_CDR,.
Definition CdrEncoding.hpp:42
@ PLAIN_CDR
Specifies that the content is PLAIN_CDR.
Definition CdrEncoding.hpp:40
@ PLAIN_CDR2
Specifies that the content is PLAIN_CDR2.
Definition CdrEncoding.hpp:44
constexpr bool is_multi_array_primitive(...)
Basis.
Definition container_recursive_inspector.hpp:27
size_t calculate_serialized_size(CdrSizeCalculator &, const _T &, size_t &)
CdrVersion
This enumeration represents the kinds of CDR serialization supported by eprosima::fastcdr::CDR.
Definition CdrEncoding.hpp:25
@ XCDRv2
XCDRv2 encoding defined by standard DDS X-Types 1.3.
Definition CdrEncoding.hpp:33
@ XCDRv1
XCDRv1 encoding defined by standard DDS X-Types 1.3.
Definition CdrEncoding.hpp:31
Definition Cdr.h:48
Template class for non-alloc strings.
Definition fixed_size_string.hpp:45
size_t size() const noexcept
Returns the size of the string.
Definition fixed_size_string.hpp:288