Line data Source code
1 : /* Common parts of the nanopb library. Most of these are quite low-level
2 : * stuff. For the high-level interface, see pb_encode.h and pb_decode.h.
3 : */
4 :
5 : #ifndef PB_H_INCLUDED
6 : #define PB_H_INCLUDED
7 :
8 : /*****************************************************************
9 : * Nanopb compilation time options. You can change these here by *
10 : * uncommenting the lines, or on the compiler command line. *
11 : *****************************************************************/
12 :
13 : /* Enable support for dynamically allocated fields */
14 : /* #define PB_ENABLE_MALLOC 1 */
15 :
16 : /* Define this if your CPU / compiler combination does not support
17 : * unaligned memory access to packed structures. Note that packed
18 : * structures are only used when requested in .proto options. */
19 : /* #define PB_NO_PACKED_STRUCTS 1 */
20 :
21 : /* Increase the number of required fields that are tracked.
22 : * A compiler warning will tell if you need this. */
23 : /* #define PB_MAX_REQUIRED_FIELDS 256 */
24 :
25 : /* Add support for tag numbers > 65536 and fields larger than 65536 bytes. */
26 : /* #define PB_FIELD_32BIT 1 */
27 :
28 : /* Disable support for error messages in order to save some code space. */
29 : /* #define PB_NO_ERRMSG 1 */
30 :
31 : /* Disable support for custom streams (support only memory buffers). */
32 : /* #define PB_BUFFER_ONLY 1 */
33 :
34 : /* Disable support for 64-bit datatypes, for compilers without int64_t
35 : or to save some code space. */
36 : /* #define PB_WITHOUT_64BIT 1 */
37 :
38 : /* Don't encode scalar arrays as packed. This is only to be used when
39 : * the decoder on the receiving side cannot process packed scalar arrays.
40 : * Such example is older protobuf.js. */
41 : /* #define PB_ENCODE_ARRAYS_UNPACKED 1 */
42 :
43 : /* Enable conversion of doubles to floats for platforms that do not
44 : * support 64-bit doubles. Most commonly AVR. */
45 : /* #define PB_CONVERT_DOUBLE_FLOAT 1 */
46 :
47 : /* Check whether incoming strings are valid UTF-8 sequences. Slows down
48 : * the string processing slightly and slightly increases code size. */
49 : /* #define PB_VALIDATE_UTF8 1 */
50 :
51 : /* This can be defined if the platform is little-endian and has 8-bit bytes.
52 : * Normally it is automatically detected based on __BYTE_ORDER__ macro. */
53 : /* #define PB_LITTLE_ENDIAN_8BIT 1 */
54 :
55 : /* Configure static assert mechanism. Instead of changing these, set your
56 : * compiler to C11 standard mode if possible. */
57 : /* #define PB_C99_STATIC_ASSERT 1 */
58 : /* #define PB_NO_STATIC_ASSERT 1 */
59 :
60 : /******************************************************************
61 : * You usually don't need to change anything below this line. *
62 : * Feel free to look around and use the defined macros, though. *
63 : ******************************************************************/
64 :
65 :
66 : /* Version of the nanopb library. Just in case you want to check it in
67 : * your own program. */
68 : #define NANOPB_VERSION "nanopb-0.4.8-dev"
69 :
70 : /* Include all the system headers needed by nanopb. You will need the
71 : * definitions of the following:
72 : * - strlen, memcpy, memset functions
73 : * - [u]int_least8_t, uint_fast8_t, [u]int_least16_t, [u]int32_t, [u]int64_t
74 : * - size_t
75 : * - bool
76 : *
77 : * If you don't have the standard header files, you can instead provide
78 : * a custom header that defines or includes all this. In that case,
79 : * define PB_SYSTEM_HEADER to the path of this file.
80 : */
81 : #ifdef PB_SYSTEM_HEADER
82 : #include PB_SYSTEM_HEADER
83 : #else
84 : #include <stdint.h>
85 : #include <stddef.h>
86 : #include <stdbool.h>
87 : #include <string.h>
88 : #include <limits.h>
89 :
90 : #ifdef PB_ENABLE_MALLOC
91 : #include <stdlib.h>
92 : #endif
93 : #endif
94 :
95 : #ifdef __cplusplus
96 : extern "C" {
97 : #endif
98 :
99 : /* Macro for defining packed structures (compiler dependent).
100 : * This just reduces memory requirements, but is not required.
101 : */
102 : #if defined(PB_NO_PACKED_STRUCTS)
103 : /* Disable struct packing */
104 : # define PB_PACKED_STRUCT_START
105 : # define PB_PACKED_STRUCT_END
106 : # define pb_packed
107 : #elif defined(__GNUC__) || defined(__clang__)
108 : /* For GCC and clang */
109 : # define PB_PACKED_STRUCT_START
110 : # define PB_PACKED_STRUCT_END
111 : # define pb_packed __attribute__((packed))
112 : #elif defined(__ICCARM__) || defined(__CC_ARM)
113 : /* For IAR ARM and Keil MDK-ARM compilers */
114 : # define PB_PACKED_STRUCT_START _Pragma("pack(push, 1)")
115 : # define PB_PACKED_STRUCT_END _Pragma("pack(pop)")
116 : # define pb_packed
117 : #elif defined(_MSC_VER) && (_MSC_VER >= 1500)
118 : /* For Microsoft Visual C++ */
119 : # define PB_PACKED_STRUCT_START __pragma(pack(push, 1))
120 : # define PB_PACKED_STRUCT_END __pragma(pack(pop))
121 : # define pb_packed
122 : #else
123 : /* Unknown compiler */
124 : # define PB_PACKED_STRUCT_START
125 : # define PB_PACKED_STRUCT_END
126 : # define pb_packed
127 : #endif
128 :
129 : /* Detect endianness */
130 : #ifndef PB_LITTLE_ENDIAN_8BIT
131 : #if ((defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN) || \
132 : (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || \
133 : defined(__LITTLE_ENDIAN__) || defined(__ARMEL__) || \
134 : defined(__THUMBEL__) || defined(__AARCH64EL__) || defined(_MIPSEL) || \
135 : defined(_M_IX86) || defined(_M_X64) || defined(_M_ARM)) \
136 : && CHAR_BIT == 8
137 : #define PB_LITTLE_ENDIAN_8BIT 1
138 : #endif
139 : #endif
140 :
141 : /* Handly macro for suppressing unreferenced-parameter compiler warnings. */
142 : #ifndef PB_UNUSED
143 2142 : #define PB_UNUSED(x) (void)(x)
144 : #endif
145 :
146 : /* Harvard-architecture processors may need special attributes for storing
147 : * field information in program memory. */
148 : #ifndef PB_PROGMEM
149 : #ifdef __AVR__
150 : #include <avr/pgmspace.h>
151 : #define PB_PROGMEM PROGMEM
152 : #define PB_PROGMEM_READU32(x) pgm_read_dword(&x)
153 : #else
154 : #define PB_PROGMEM
155 113095905 : #define PB_PROGMEM_READU32(x) (x)
156 : #endif
157 : #endif
158 :
159 : /* Compile-time assertion, used for checking compatible compilation options.
160 : * If this does not work properly on your compiler, use
161 : * #define PB_NO_STATIC_ASSERT to disable it.
162 : *
163 : * But before doing that, check carefully the error message / place where it
164 : * comes from to see if the error has a real cause. Unfortunately the error
165 : * message is not always very clear to read, but you can see the reason better
166 : * in the place where the PB_STATIC_ASSERT macro was called.
167 : */
168 : #ifndef PB_NO_STATIC_ASSERT
169 : # ifndef PB_STATIC_ASSERT
170 : # if defined(__ICCARM__)
171 : /* IAR has static_assert keyword but no _Static_assert */
172 : # define PB_STATIC_ASSERT(COND,MSG) static_assert(COND,#MSG);
173 : # elif defined(_MSC_VER) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112)
174 : /* MSVC in C89 mode supports static_assert() keyword anyway */
175 : # define PB_STATIC_ASSERT(COND,MSG) static_assert(COND,#MSG);
176 : # elif defined(PB_C99_STATIC_ASSERT)
177 : /* Classic negative-size-array static assert mechanism */
178 : # define PB_STATIC_ASSERT(COND,MSG) typedef char PB_STATIC_ASSERT_MSG(MSG, __LINE__, __COUNTER__)[(COND)?1:-1];
179 : # define PB_STATIC_ASSERT_MSG(MSG, LINE, COUNTER) PB_STATIC_ASSERT_MSG_(MSG, LINE, COUNTER)
180 : # define PB_STATIC_ASSERT_MSG_(MSG, LINE, COUNTER) pb_static_assertion_##MSG##_##LINE##_##COUNTER
181 : # elif defined(__cplusplus)
182 : /* C++11 standard static_assert mechanism */
183 : # define PB_STATIC_ASSERT(COND,MSG) static_assert(COND,#MSG);
184 : # else
185 : /* C11 standard _Static_assert mechanism */
186 : # define PB_STATIC_ASSERT(COND,MSG) _Static_assert(COND,#MSG);
187 : # endif
188 : # endif
189 : #else
190 : /* Static asserts disabled by PB_NO_STATIC_ASSERT */
191 : # define PB_STATIC_ASSERT(COND,MSG)
192 : #endif
193 :
194 : /* Test that PB_STATIC_ASSERT works
195 : * If you get errors here, you may need to do one of these:
196 : * - Enable C11 standard support in your compiler
197 : * - Define PB_C99_STATIC_ASSERT to enable C99 standard support
198 : * - Define PB_NO_STATIC_ASSERT to disable static asserts altogether
199 : */
200 : PB_STATIC_ASSERT(1, STATIC_ASSERT_IS_NOT_WORKING)
201 :
202 : /* Number of required fields to keep track of. */
203 : #ifndef PB_MAX_REQUIRED_FIELDS
204 0 : #define PB_MAX_REQUIRED_FIELDS 64
205 : #endif
206 :
207 : #if PB_MAX_REQUIRED_FIELDS < 64
208 : #error You should not lower PB_MAX_REQUIRED_FIELDS from the default value (64).
209 : #endif
210 :
211 : #ifdef PB_WITHOUT_64BIT
212 : #ifdef PB_CONVERT_DOUBLE_FLOAT
213 : /* Cannot use doubles without 64-bit types */
214 : #undef PB_CONVERT_DOUBLE_FLOAT
215 : #endif
216 : #endif
217 :
218 : /* List of possible field types. These are used in the autogenerated code.
219 : * Least-significant 4 bits tell the scalar type
220 : * Most-significant 4 bits specify repeated/required/packed etc.
221 : */
222 :
223 : typedef uint_least8_t pb_type_t;
224 :
225 : /**** Field data types ****/
226 :
227 : /* Numeric types */
228 1556397 : #define PB_LTYPE_BOOL 0x00U /* bool */
229 87015 : #define PB_LTYPE_VARINT 0x01U /* int32, int64, enum, bool */
230 7170870 : #define PB_LTYPE_UVARINT 0x02U /* uint32, uint64 */
231 3364299 : #define PB_LTYPE_SVARINT 0x03U /* sint32, sint64 */
232 643032 : #define PB_LTYPE_FIXED32 0x04U /* fixed32, sfixed32, float */
233 15148878 : #define PB_LTYPE_FIXED64 0x05U /* fixed64, sfixed64, double */
234 :
235 : /* Marker for last packable field type. */
236 3202611 : #define PB_LTYPE_LAST_PACKABLE 0x05U
237 :
238 : /* Byte array with pre-allocated buffer.
239 : * data_size is the length of the allocated PB_BYTES_ARRAY structure. */
240 21061833 : #define PB_LTYPE_BYTES 0x06U
241 :
242 : /* String with pre-allocated buffer.
243 : * data_size is the maximum length. */
244 38695317 : #define PB_LTYPE_STRING 0x07U
245 :
246 : /* Submessage
247 : * submsg_fields is pointer to field descriptions */
248 246623277 : #define PB_LTYPE_SUBMESSAGE 0x08U
249 :
250 : /* Submessage with pre-decoding callback
251 : * The pre-decoding callback is stored as pb_callback_t right before pSize.
252 : * submsg_fields is pointer to field descriptions */
253 118791141 : #define PB_LTYPE_SUBMSG_W_CB 0x09U
254 :
255 : /* Extension pseudo-field
256 : * The field contains a pointer to pb_extension_t */
257 49432041 : #define PB_LTYPE_EXTENSION 0x0AU
258 :
259 : /* Byte array with inline, pre-allocated byffer.
260 : * data_size is the length of the inline, allocated buffer.
261 : * This differs from PB_LTYPE_BYTES by defining the element as
262 : * pb_byte_t[data_size] rather than pb_bytes_array_t. */
263 2427195 : #define PB_LTYPE_FIXED_LENGTH_BYTES 0x0BU
264 :
265 : /* Number of declared LTYPES */
266 : #define PB_LTYPES_COUNT 0x0CU
267 357508755 : #define PB_LTYPE_MASK 0x0FU
268 :
269 : /**** Field repetition rules ****/
270 :
271 56470815 : #define PB_HTYPE_REQUIRED 0x00U
272 27945696 : #define PB_HTYPE_OPTIONAL 0x10U
273 : #define PB_HTYPE_SINGULAR 0x10U
274 136021068 : #define PB_HTYPE_REPEATED 0x20U
275 : #define PB_HTYPE_FIXARRAY 0x20U
276 40095354 : #define PB_HTYPE_ONEOF 0x30U
277 174505080 : #define PB_HTYPE_MASK 0x30U
278 :
279 : /**** Field allocation types ****/
280 :
281 28669035 : #define PB_ATYPE_STATIC 0x00U
282 120398733 : #define PB_ATYPE_POINTER 0x80U
283 6026871 : #define PB_ATYPE_CALLBACK 0x40U
284 106260369 : #define PB_ATYPE_MASK 0xC0U
285 :
286 106260369 : #define PB_ATYPE(x) ((x) & PB_ATYPE_MASK)
287 174505080 : #define PB_HTYPE(x) ((x) & PB_HTYPE_MASK)
288 357508755 : #define PB_LTYPE(x) ((x) & PB_LTYPE_MASK)
289 148769379 : #define PB_LTYPE_IS_SUBMSG(x) (PB_LTYPE(x) == PB_LTYPE_SUBMESSAGE || \
290 148769379 : PB_LTYPE(x) == PB_LTYPE_SUBMSG_W_CB)
291 :
292 : /* Data type used for storing sizes of struct fields
293 : * and array counts.
294 : */
295 : #if defined(PB_FIELD_32BIT)
296 : typedef uint32_t pb_size_t;
297 : typedef int32_t pb_ssize_t;
298 : #else
299 : typedef uint_least16_t pb_size_t;
300 : typedef int_least16_t pb_ssize_t;
301 : #endif
302 30904548 : #define PB_SIZE_MAX ((pb_size_t)-1)
303 :
304 : /* Data type for storing encoded data and other byte streams.
305 : * This typedef exists to support platforms where uint8_t does not exist.
306 : * You can regard it as equivalent on uint8_t on other platforms.
307 : */
308 : typedef uint_least8_t pb_byte_t;
309 :
310 : /* Forward declaration of struct types */
311 : typedef struct pb_istream_s pb_istream_t;
312 : typedef struct pb_ostream_s pb_ostream_t;
313 : typedef struct pb_field_iter_s pb_field_iter_t;
314 :
315 : /* This structure is used in auto-generated constants
316 : * to specify struct fields.
317 : */
318 : typedef struct pb_msgdesc_s pb_msgdesc_t;
319 : struct pb_msgdesc_s {
320 : const uint32_t *field_info;
321 : const pb_msgdesc_t * const * submsg_info;
322 : const pb_byte_t *default_value;
323 :
324 : bool (*field_callback)(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_iter_t *field);
325 :
326 : pb_size_t field_count;
327 : pb_size_t required_field_count;
328 : pb_size_t largest_tag;
329 : };
330 :
331 : /* Iterator for message descriptor */
332 : struct pb_field_iter_s {
333 : const pb_msgdesc_t *descriptor; /* Pointer to message descriptor constant */
334 : void *message; /* Pointer to start of the structure */
335 :
336 : pb_size_t index; /* Index of the field */
337 : pb_size_t field_info_index; /* Index to descriptor->field_info array */
338 : pb_size_t required_field_index; /* Index that counts only the required fields */
339 : pb_size_t submessage_index; /* Index that counts only submessages */
340 :
341 : pb_size_t tag; /* Tag of current field */
342 : pb_size_t data_size; /* sizeof() of a single item */
343 : pb_size_t array_size; /* Number of array entries */
344 : pb_type_t type; /* Type of current field */
345 :
346 : void *pField; /* Pointer to current field in struct */
347 : void *pData; /* Pointer to current data contents. Different than pField for arrays and pointers. */
348 : void *pSize; /* Pointer to count/has field */
349 :
350 : const pb_msgdesc_t *submsg_desc; /* For submessage fields, pointer to field descriptor for the submessage. */
351 : };
352 :
353 : /* For compatibility with legacy code */
354 : typedef pb_field_iter_t pb_field_t;
355 :
356 : /* Make sure that the standard integer types are of the expected sizes.
357 : * Otherwise fixed32/fixed64 fields can break.
358 : *
359 : * If you get errors here, it probably means that your stdint.h is not
360 : * correct for your platform.
361 : */
362 : #ifndef PB_WITHOUT_64BIT
363 : PB_STATIC_ASSERT(sizeof(int64_t) == 2 * sizeof(int32_t), INT64_T_WRONG_SIZE)
364 : PB_STATIC_ASSERT(sizeof(uint64_t) == 2 * sizeof(uint32_t), UINT64_T_WRONG_SIZE)
365 : #endif
366 :
367 : /* This structure is used for 'bytes' arrays.
368 : * It has the number of bytes in the beginning, and after that an array.
369 : * Note that actual structs used will have a different length of bytes array.
370 : */
371 : #define PB_BYTES_ARRAY_T(n) struct { pb_size_t size; pb_byte_t bytes[n]; }
372 1681425 : #define PB_BYTES_ARRAY_T_ALLOCSIZE(n) ((size_t)n + offsetof(pb_bytes_array_t, bytes))
373 :
374 : struct pb_bytes_array_s {
375 : pb_size_t size;
376 : pb_byte_t bytes[1];
377 : };
378 : typedef struct pb_bytes_array_s pb_bytes_array_t;
379 :
380 : /* This structure is used for giving the callback function.
381 : * It is stored in the message structure and filled in by the method that
382 : * calls pb_decode.
383 : *
384 : * The decoding callback will be given a limited-length stream
385 : * If the wire type was string, the length is the length of the string.
386 : * If the wire type was a varint/fixed32/fixed64, the length is the length
387 : * of the actual value.
388 : * The function may be called multiple times (especially for repeated types,
389 : * but also otherwise if the message happens to contain the field multiple
390 : * times.)
391 : *
392 : * The encoding callback will receive the actual output stream.
393 : * It should write all the data in one call, including the field tag and
394 : * wire type. It can write multiple fields.
395 : *
396 : * The callback can be null if you want to skip a field.
397 : */
398 : typedef struct pb_callback_s pb_callback_t;
399 : struct pb_callback_s {
400 : /* Callback functions receive a pointer to the arg field.
401 : * You can access the value of the field as *arg, and modify it if needed.
402 : */
403 : union {
404 : bool (*decode)(pb_istream_t *stream, const pb_field_t *field, void **arg);
405 : bool (*encode)(pb_ostream_t *stream, const pb_field_t *field, void * const *arg);
406 : } funcs;
407 :
408 : /* Free arg for use by callback */
409 : void *arg;
410 : };
411 :
412 : extern bool pb_default_field_callback(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_t *field);
413 :
414 : /* Wire types. Library user needs these only in encoder callbacks. */
415 : typedef enum {
416 : PB_WT_VARINT = 0,
417 : PB_WT_64BIT = 1,
418 : PB_WT_STRING = 2,
419 : PB_WT_32BIT = 5,
420 : PB_WT_PACKED = 255 /* PB_WT_PACKED is internal marker for packed arrays. */
421 : } pb_wire_type_t;
422 :
423 : /* Structure for defining the handling of unknown/extension fields.
424 : * Usually the pb_extension_type_t structure is automatically generated,
425 : * while the pb_extension_t structure is created by the user. However,
426 : * if you want to catch all unknown fields, you can also create a custom
427 : * pb_extension_type_t with your own callback.
428 : */
429 : typedef struct pb_extension_type_s pb_extension_type_t;
430 : typedef struct pb_extension_s pb_extension_t;
431 : struct pb_extension_type_s {
432 : /* Called for each unknown field in the message.
433 : * If you handle the field, read off all of its data and return true.
434 : * If you do not handle the field, do not read anything and return true.
435 : * If you run into an error, return false.
436 : * Set to NULL for default handler.
437 : */
438 : bool (*decode)(pb_istream_t *stream, pb_extension_t *extension,
439 : uint32_t tag, pb_wire_type_t wire_type);
440 :
441 : /* Called once after all regular fields have been encoded.
442 : * If you have something to write, do so and return true.
443 : * If you do not have anything to write, just return true.
444 : * If you run into an error, return false.
445 : * Set to NULL for default handler.
446 : */
447 : bool (*encode)(pb_ostream_t *stream, const pb_extension_t *extension);
448 :
449 : /* Free field for use by the callback. */
450 : const void *arg;
451 : };
452 :
453 : struct pb_extension_s {
454 : /* Type describing the extension field. Usually you'll initialize
455 : * this to a pointer to the automatically generated structure. */
456 : const pb_extension_type_t *type;
457 :
458 : /* Destination for the decoded data. This must match the datatype
459 : * of the extension field. */
460 : void *dest;
461 :
462 : /* Pointer to the next extension handler, or NULL.
463 : * If this extension does not match a field, the next handler is
464 : * automatically called. */
465 : pb_extension_t *next;
466 :
467 : /* The decoder sets this to true if the extension was found.
468 : * Ignored for encoding. */
469 : bool found;
470 : };
471 :
472 : #define pb_extension_init_zero {NULL,NULL,NULL,false}
473 :
474 : /* Memory allocation functions to use. You can define pb_realloc and
475 : * pb_free to custom functions if you want. */
476 : #ifdef PB_ENABLE_MALLOC
477 : # ifndef pb_realloc
478 4751889 : # define pb_realloc(ptr, size) realloc(ptr, size)
479 : # endif
480 : # ifndef pb_free
481 2941260 : # define pb_free(ptr) free(ptr)
482 : # endif
483 : #endif
484 :
485 : /* This is used to inform about need to regenerate .pb.h/.pb.c files. */
486 : #define PB_PROTO_HEADER_VERSION 40
487 :
488 : /* These macros are used to declare pb_field_t's in the constant array. */
489 : /* Size of a structure member, in bytes. */
490 : #define pb_membersize(st, m) (sizeof ((st*)0)->m)
491 : /* Number of entries in an array. */
492 : #define pb_arraysize(st, m) (pb_membersize(st, m) / pb_membersize(st, m[0]))
493 : /* Delta from start of one member to the start of another member. */
494 : #define pb_delta(st, m1, m2) ((int)offsetof(st, m1) - (int)offsetof(st, m2))
495 :
496 : /* Force expansion of macro value */
497 : #define PB_EXPAND(x) x
498 :
499 : /* Binding of a message field set into a specific structure */
500 : #define PB_BIND(msgname, structname, width) \
501 : const uint32_t structname ## _field_info[] PB_PROGMEM = \
502 : { \
503 : msgname ## _FIELDLIST(PB_GEN_FIELD_INFO_ ## width, structname) \
504 : 0 \
505 : }; \
506 : const pb_msgdesc_t* const structname ## _submsg_info[] = \
507 : { \
508 : msgname ## _FIELDLIST(PB_GEN_SUBMSG_INFO, structname) \
509 : NULL \
510 : }; \
511 : const pb_msgdesc_t structname ## _msg = \
512 : { \
513 : structname ## _field_info, \
514 : structname ## _submsg_info, \
515 : msgname ## _DEFAULT, \
516 : msgname ## _CALLBACK, \
517 : 0 msgname ## _FIELDLIST(PB_GEN_FIELD_COUNT, structname), \
518 : 0 msgname ## _FIELDLIST(PB_GEN_REQ_FIELD_COUNT, structname), \
519 : 0 msgname ## _FIELDLIST(PB_GEN_LARGEST_TAG, structname), \
520 : }; \
521 : msgname ## _FIELDLIST(PB_GEN_FIELD_INFO_ASSERT_ ## width, structname)
522 :
523 : #define PB_GEN_FIELD_COUNT(structname, atype, htype, ltype, fieldname, tag) +1
524 : #define PB_GEN_REQ_FIELD_COUNT(structname, atype, htype, ltype, fieldname, tag) \
525 : + (PB_HTYPE_ ## htype == PB_HTYPE_REQUIRED)
526 : #define PB_GEN_LARGEST_TAG(structname, atype, htype, ltype, fieldname, tag) \
527 : * 0 + tag
528 :
529 : /* X-macro for generating the entries in struct_field_info[] array. */
530 : #define PB_GEN_FIELD_INFO_1(structname, atype, htype, ltype, fieldname, tag) \
531 : PB_FIELDINFO_1(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
532 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
533 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
534 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
535 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
536 :
537 : #define PB_GEN_FIELD_INFO_2(structname, atype, htype, ltype, fieldname, tag) \
538 : PB_FIELDINFO_2(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
539 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
540 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
541 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
542 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
543 :
544 : #define PB_GEN_FIELD_INFO_4(structname, atype, htype, ltype, fieldname, tag) \
545 : PB_FIELDINFO_4(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
546 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
547 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
548 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
549 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
550 :
551 : #define PB_GEN_FIELD_INFO_8(structname, atype, htype, ltype, fieldname, tag) \
552 : PB_FIELDINFO_8(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
553 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
554 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
555 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
556 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
557 :
558 : #define PB_GEN_FIELD_INFO_AUTO(structname, atype, htype, ltype, fieldname, tag) \
559 : PB_FIELDINFO_AUTO2(PB_FIELDINFO_WIDTH_AUTO(_PB_ATYPE_ ## atype, _PB_HTYPE_ ## htype, _PB_LTYPE_ ## ltype), \
560 : tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
561 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
562 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
563 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
564 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
565 :
566 : #define PB_FIELDINFO_AUTO2(width, tag, type, data_offset, data_size, size_offset, array_size) \
567 : PB_FIELDINFO_AUTO3(width, tag, type, data_offset, data_size, size_offset, array_size)
568 :
569 : #define PB_FIELDINFO_AUTO3(width, tag, type, data_offset, data_size, size_offset, array_size) \
570 : PB_FIELDINFO_ ## width(tag, type, data_offset, data_size, size_offset, array_size)
571 :
572 : /* X-macro for generating asserts that entries fit in struct_field_info[] array.
573 : * The structure of macros here must match the structure above in PB_GEN_FIELD_INFO_x(),
574 : * but it is not easily reused because of how macro substitutions work. */
575 : #define PB_GEN_FIELD_INFO_ASSERT_1(structname, atype, htype, ltype, fieldname, tag) \
576 : PB_FIELDINFO_ASSERT_1(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
577 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
578 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
579 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
580 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
581 :
582 : #define PB_GEN_FIELD_INFO_ASSERT_2(structname, atype, htype, ltype, fieldname, tag) \
583 : PB_FIELDINFO_ASSERT_2(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
584 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
585 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
586 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
587 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
588 :
589 : #define PB_GEN_FIELD_INFO_ASSERT_4(structname, atype, htype, ltype, fieldname, tag) \
590 : PB_FIELDINFO_ASSERT_4(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
591 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
592 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
593 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
594 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
595 :
596 : #define PB_GEN_FIELD_INFO_ASSERT_8(structname, atype, htype, ltype, fieldname, tag) \
597 : PB_FIELDINFO_ASSERT_8(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
598 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
599 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
600 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
601 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
602 :
603 : #define PB_GEN_FIELD_INFO_ASSERT_AUTO(structname, atype, htype, ltype, fieldname, tag) \
604 : PB_FIELDINFO_ASSERT_AUTO2(PB_FIELDINFO_WIDTH_AUTO(_PB_ATYPE_ ## atype, _PB_HTYPE_ ## htype, _PB_LTYPE_ ## ltype), \
605 : tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \
606 : PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
607 : PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
608 : PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \
609 : PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname))
610 :
611 : #define PB_FIELDINFO_ASSERT_AUTO2(width, tag, type, data_offset, data_size, size_offset, array_size) \
612 : PB_FIELDINFO_ASSERT_AUTO3(width, tag, type, data_offset, data_size, size_offset, array_size)
613 :
614 : #define PB_FIELDINFO_ASSERT_AUTO3(width, tag, type, data_offset, data_size, size_offset, array_size) \
615 : PB_FIELDINFO_ASSERT_ ## width(tag, type, data_offset, data_size, size_offset, array_size)
616 :
617 : #define PB_DATA_OFFSET_STATIC(htype, structname, fieldname) PB_DO ## htype(structname, fieldname)
618 : #define PB_DATA_OFFSET_POINTER(htype, structname, fieldname) PB_DO ## htype(structname, fieldname)
619 : #define PB_DATA_OFFSET_CALLBACK(htype, structname, fieldname) PB_DO ## htype(structname, fieldname)
620 : #define PB_DO_PB_HTYPE_REQUIRED(structname, fieldname) offsetof(structname, fieldname)
621 : #define PB_DO_PB_HTYPE_SINGULAR(structname, fieldname) offsetof(structname, fieldname)
622 : #define PB_DO_PB_HTYPE_ONEOF(structname, fieldname) offsetof(structname, PB_ONEOF_NAME(FULL, fieldname))
623 : #define PB_DO_PB_HTYPE_OPTIONAL(structname, fieldname) offsetof(structname, fieldname)
624 : #define PB_DO_PB_HTYPE_REPEATED(structname, fieldname) offsetof(structname, fieldname)
625 : #define PB_DO_PB_HTYPE_FIXARRAY(structname, fieldname) offsetof(structname, fieldname)
626 :
627 : #define PB_SIZE_OFFSET_STATIC(htype, structname, fieldname) PB_SO ## htype(structname, fieldname)
628 : #define PB_SIZE_OFFSET_POINTER(htype, structname, fieldname) PB_SO_PTR ## htype(structname, fieldname)
629 : #define PB_SIZE_OFFSET_CALLBACK(htype, structname, fieldname) PB_SO_CB ## htype(structname, fieldname)
630 : #define PB_SO_PB_HTYPE_REQUIRED(structname, fieldname) 0
631 : #define PB_SO_PB_HTYPE_SINGULAR(structname, fieldname) 0
632 : #define PB_SO_PB_HTYPE_ONEOF(structname, fieldname) PB_SO_PB_HTYPE_ONEOF2(structname, PB_ONEOF_NAME(FULL, fieldname), PB_ONEOF_NAME(UNION, fieldname))
633 : #define PB_SO_PB_HTYPE_ONEOF2(structname, fullname, unionname) PB_SO_PB_HTYPE_ONEOF3(structname, fullname, unionname)
634 : #define PB_SO_PB_HTYPE_ONEOF3(structname, fullname, unionname) pb_delta(structname, fullname, which_ ## unionname)
635 : #define PB_SO_PB_HTYPE_OPTIONAL(structname, fieldname) pb_delta(structname, fieldname, has_ ## fieldname)
636 : #define PB_SO_PB_HTYPE_REPEATED(structname, fieldname) pb_delta(structname, fieldname, fieldname ## _count)
637 : #define PB_SO_PB_HTYPE_FIXARRAY(structname, fieldname) 0
638 : #define PB_SO_PTR_PB_HTYPE_REQUIRED(structname, fieldname) 0
639 : #define PB_SO_PTR_PB_HTYPE_SINGULAR(structname, fieldname) 0
640 : #define PB_SO_PTR_PB_HTYPE_ONEOF(structname, fieldname) PB_SO_PB_HTYPE_ONEOF(structname, fieldname)
641 : #define PB_SO_PTR_PB_HTYPE_OPTIONAL(structname, fieldname) 0
642 : #define PB_SO_PTR_PB_HTYPE_REPEATED(structname, fieldname) PB_SO_PB_HTYPE_REPEATED(structname, fieldname)
643 : #define PB_SO_PTR_PB_HTYPE_FIXARRAY(structname, fieldname) 0
644 : #define PB_SO_CB_PB_HTYPE_REQUIRED(structname, fieldname) 0
645 : #define PB_SO_CB_PB_HTYPE_SINGULAR(structname, fieldname) 0
646 : #define PB_SO_CB_PB_HTYPE_ONEOF(structname, fieldname) PB_SO_PB_HTYPE_ONEOF(structname, fieldname)
647 : #define PB_SO_CB_PB_HTYPE_OPTIONAL(structname, fieldname) 0
648 : #define PB_SO_CB_PB_HTYPE_REPEATED(structname, fieldname) 0
649 : #define PB_SO_CB_PB_HTYPE_FIXARRAY(structname, fieldname) 0
650 :
651 : #define PB_ARRAY_SIZE_STATIC(htype, structname, fieldname) PB_AS ## htype(structname, fieldname)
652 : #define PB_ARRAY_SIZE_POINTER(htype, structname, fieldname) PB_AS_PTR ## htype(structname, fieldname)
653 : #define PB_ARRAY_SIZE_CALLBACK(htype, structname, fieldname) 1
654 : #define PB_AS_PB_HTYPE_REQUIRED(structname, fieldname) 1
655 : #define PB_AS_PB_HTYPE_SINGULAR(structname, fieldname) 1
656 : #define PB_AS_PB_HTYPE_OPTIONAL(structname, fieldname) 1
657 : #define PB_AS_PB_HTYPE_ONEOF(structname, fieldname) 1
658 : #define PB_AS_PB_HTYPE_REPEATED(structname, fieldname) pb_arraysize(structname, fieldname)
659 : #define PB_AS_PB_HTYPE_FIXARRAY(structname, fieldname) pb_arraysize(structname, fieldname)
660 : #define PB_AS_PTR_PB_HTYPE_REQUIRED(structname, fieldname) 1
661 : #define PB_AS_PTR_PB_HTYPE_SINGULAR(structname, fieldname) 1
662 : #define PB_AS_PTR_PB_HTYPE_OPTIONAL(structname, fieldname) 1
663 : #define PB_AS_PTR_PB_HTYPE_ONEOF(structname, fieldname) 1
664 : #define PB_AS_PTR_PB_HTYPE_REPEATED(structname, fieldname) 1
665 : #define PB_AS_PTR_PB_HTYPE_FIXARRAY(structname, fieldname) pb_arraysize(structname, fieldname[0])
666 :
667 : #define PB_DATA_SIZE_STATIC(htype, structname, fieldname) PB_DS ## htype(structname, fieldname)
668 : #define PB_DATA_SIZE_POINTER(htype, structname, fieldname) PB_DS_PTR ## htype(structname, fieldname)
669 : #define PB_DATA_SIZE_CALLBACK(htype, structname, fieldname) PB_DS_CB ## htype(structname, fieldname)
670 : #define PB_DS_PB_HTYPE_REQUIRED(structname, fieldname) pb_membersize(structname, fieldname)
671 : #define PB_DS_PB_HTYPE_SINGULAR(structname, fieldname) pb_membersize(structname, fieldname)
672 : #define PB_DS_PB_HTYPE_OPTIONAL(structname, fieldname) pb_membersize(structname, fieldname)
673 : #define PB_DS_PB_HTYPE_ONEOF(structname, fieldname) pb_membersize(structname, PB_ONEOF_NAME(FULL, fieldname))
674 : #define PB_DS_PB_HTYPE_REPEATED(structname, fieldname) pb_membersize(structname, fieldname[0])
675 : #define PB_DS_PB_HTYPE_FIXARRAY(structname, fieldname) pb_membersize(structname, fieldname[0])
676 : #define PB_DS_PTR_PB_HTYPE_REQUIRED(structname, fieldname) pb_membersize(structname, fieldname[0])
677 : #define PB_DS_PTR_PB_HTYPE_SINGULAR(structname, fieldname) pb_membersize(structname, fieldname[0])
678 : #define PB_DS_PTR_PB_HTYPE_OPTIONAL(structname, fieldname) pb_membersize(structname, fieldname[0])
679 : #define PB_DS_PTR_PB_HTYPE_ONEOF(structname, fieldname) pb_membersize(structname, PB_ONEOF_NAME(FULL, fieldname)[0])
680 : #define PB_DS_PTR_PB_HTYPE_REPEATED(structname, fieldname) pb_membersize(structname, fieldname[0])
681 : #define PB_DS_PTR_PB_HTYPE_FIXARRAY(structname, fieldname) pb_membersize(structname, fieldname[0][0])
682 : #define PB_DS_CB_PB_HTYPE_REQUIRED(structname, fieldname) pb_membersize(structname, fieldname)
683 : #define PB_DS_CB_PB_HTYPE_SINGULAR(structname, fieldname) pb_membersize(structname, fieldname)
684 : #define PB_DS_CB_PB_HTYPE_OPTIONAL(structname, fieldname) pb_membersize(structname, fieldname)
685 : #define PB_DS_CB_PB_HTYPE_ONEOF(structname, fieldname) pb_membersize(structname, PB_ONEOF_NAME(FULL, fieldname))
686 : #define PB_DS_CB_PB_HTYPE_REPEATED(structname, fieldname) pb_membersize(structname, fieldname)
687 : #define PB_DS_CB_PB_HTYPE_FIXARRAY(structname, fieldname) pb_membersize(structname, fieldname)
688 :
689 : #define PB_ONEOF_NAME(type, tuple) PB_EXPAND(PB_ONEOF_NAME_ ## type tuple)
690 : #define PB_ONEOF_NAME_UNION(unionname,membername,fullname) unionname
691 : #define PB_ONEOF_NAME_MEMBER(unionname,membername,fullname) membername
692 : #define PB_ONEOF_NAME_FULL(unionname,membername,fullname) fullname
693 :
694 : #define PB_GEN_SUBMSG_INFO(structname, atype, htype, ltype, fieldname, tag) \
695 : PB_SUBMSG_INFO_ ## htype(_PB_LTYPE_ ## ltype, structname, fieldname)
696 :
697 : #define PB_SUBMSG_INFO_REQUIRED(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE)
698 : #define PB_SUBMSG_INFO_SINGULAR(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE)
699 : #define PB_SUBMSG_INFO_OPTIONAL(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE)
700 : #define PB_SUBMSG_INFO_ONEOF(ltype, structname, fieldname) PB_SUBMSG_INFO_ONEOF2(ltype, structname, PB_ONEOF_NAME(UNION, fieldname), PB_ONEOF_NAME(MEMBER, fieldname))
701 : #define PB_SUBMSG_INFO_ONEOF2(ltype, structname, unionname, membername) PB_SUBMSG_INFO_ONEOF3(ltype, structname, unionname, membername)
702 : #define PB_SUBMSG_INFO_ONEOF3(ltype, structname, unionname, membername) PB_SI ## ltype(structname ## _ ## unionname ## _ ## membername ## _MSGTYPE)
703 : #define PB_SUBMSG_INFO_REPEATED(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE)
704 : #define PB_SUBMSG_INFO_FIXARRAY(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE)
705 : #define PB_SI_PB_LTYPE_BOOL(t)
706 : #define PB_SI_PB_LTYPE_BYTES(t)
707 : #define PB_SI_PB_LTYPE_DOUBLE(t)
708 : #define PB_SI_PB_LTYPE_ENUM(t)
709 : #define PB_SI_PB_LTYPE_UENUM(t)
710 : #define PB_SI_PB_LTYPE_FIXED32(t)
711 : #define PB_SI_PB_LTYPE_FIXED64(t)
712 : #define PB_SI_PB_LTYPE_FLOAT(t)
713 : #define PB_SI_PB_LTYPE_INT32(t)
714 : #define PB_SI_PB_LTYPE_INT64(t)
715 : #define PB_SI_PB_LTYPE_MESSAGE(t) PB_SUBMSG_DESCRIPTOR(t)
716 : #define PB_SI_PB_LTYPE_MSG_W_CB(t) PB_SUBMSG_DESCRIPTOR(t)
717 : #define PB_SI_PB_LTYPE_SFIXED32(t)
718 : #define PB_SI_PB_LTYPE_SFIXED64(t)
719 : #define PB_SI_PB_LTYPE_SINT32(t)
720 : #define PB_SI_PB_LTYPE_SINT64(t)
721 : #define PB_SI_PB_LTYPE_STRING(t)
722 : #define PB_SI_PB_LTYPE_UINT32(t)
723 : #define PB_SI_PB_LTYPE_UINT64(t)
724 : #define PB_SI_PB_LTYPE_EXTENSION(t)
725 : #define PB_SI_PB_LTYPE_FIXED_LENGTH_BYTES(t)
726 : #define PB_SUBMSG_DESCRIPTOR(t) &(t ## _msg),
727 :
728 : /* The field descriptors use a variable width format, with width of either
729 : * 1, 2, 4 or 8 of 32-bit words. The two lowest bytes of the first byte always
730 : * encode the descriptor size, 6 lowest bits of field tag number, and 8 bits
731 : * of the field type.
732 : *
733 : * Descriptor size is encoded as 0 = 1 word, 1 = 2 words, 2 = 4 words, 3 = 8 words.
734 : *
735 : * Formats, listed starting with the least significant bit of the first word.
736 : * 1 word: [2-bit len] [6-bit tag] [8-bit type] [8-bit data_offset] [4-bit size_offset] [4-bit data_size]
737 : *
738 : * 2 words: [2-bit len] [6-bit tag] [8-bit type] [12-bit array_size] [4-bit size_offset]
739 : * [16-bit data_offset] [12-bit data_size] [4-bit tag>>6]
740 : *
741 : * 4 words: [2-bit len] [6-bit tag] [8-bit type] [16-bit array_size]
742 : * [8-bit size_offset] [24-bit tag>>6]
743 : * [32-bit data_offset]
744 : * [32-bit data_size]
745 : *
746 : * 8 words: [2-bit len] [6-bit tag] [8-bit type] [16-bit reserved]
747 : * [8-bit size_offset] [24-bit tag>>6]
748 : * [32-bit data_offset]
749 : * [32-bit data_size]
750 : * [32-bit array_size]
751 : * [32-bit reserved]
752 : * [32-bit reserved]
753 : * [32-bit reserved]
754 : */
755 :
756 : #define PB_FIELDINFO_1(tag, type, data_offset, data_size, size_offset, array_size) \
757 : (0 | (((tag) << 2) & 0xFF) | ((type) << 8) | (((uint32_t)(data_offset) & 0xFF) << 16) | \
758 : (((uint32_t)(size_offset) & 0x0F) << 24) | (((uint32_t)(data_size) & 0x0F) << 28)),
759 :
760 : #define PB_FIELDINFO_2(tag, type, data_offset, data_size, size_offset, array_size) \
761 : (1 | (((tag) << 2) & 0xFF) | ((type) << 8) | (((uint32_t)(array_size) & 0xFFF) << 16) | (((uint32_t)(size_offset) & 0x0F) << 28)), \
762 : (((uint32_t)(data_offset) & 0xFFFF) | (((uint32_t)(data_size) & 0xFFF) << 16) | (((uint32_t)(tag) & 0x3c0) << 22)),
763 :
764 : #define PB_FIELDINFO_4(tag, type, data_offset, data_size, size_offset, array_size) \
765 : (2 | (((tag) << 2) & 0xFF) | ((type) << 8) | (((uint32_t)(array_size) & 0xFFFF) << 16)), \
766 : ((uint32_t)(int_least8_t)(size_offset) | (((uint32_t)(tag) << 2) & 0xFFFFFF00)), \
767 : (data_offset), (data_size),
768 :
769 : #define PB_FIELDINFO_8(tag, type, data_offset, data_size, size_offset, array_size) \
770 : (3 | (((tag) << 2) & 0xFF) | ((type) << 8)), \
771 : ((uint32_t)(int_least8_t)(size_offset) | (((uint32_t)(tag) << 2) & 0xFFFFFF00)), \
772 : (data_offset), (data_size), (array_size), 0, 0, 0,
773 :
774 : /* These assertions verify that the field information fits in the allocated space.
775 : * The generator tries to automatically determine the correct width that can fit all
776 : * data associated with a message. These asserts will fail only if there has been a
777 : * problem in the automatic logic - this may be worth reporting as a bug. As a workaround,
778 : * you can increase the descriptor width by defining PB_FIELDINFO_WIDTH or by setting
779 : * descriptorsize option in .options file.
780 : */
781 : #define PB_FITS(value,bits) ((uint32_t)(value) < ((uint32_t)1<<bits))
782 : #define PB_FIELDINFO_ASSERT_1(tag, type, data_offset, data_size, size_offset, array_size) \
783 : PB_STATIC_ASSERT(PB_FITS(tag,6) && PB_FITS(data_offset,8) && PB_FITS(size_offset,4) && PB_FITS(data_size,4) && PB_FITS(array_size,1), FIELDINFO_DOES_NOT_FIT_width1_field ## tag)
784 :
785 : #define PB_FIELDINFO_ASSERT_2(tag, type, data_offset, data_size, size_offset, array_size) \
786 : PB_STATIC_ASSERT(PB_FITS(tag,10) && PB_FITS(data_offset,16) && PB_FITS(size_offset,4) && PB_FITS(data_size,12) && PB_FITS(array_size,12), FIELDINFO_DOES_NOT_FIT_width2_field ## tag)
787 :
788 : #ifndef PB_FIELD_32BIT
789 : /* Maximum field sizes are still 16-bit if pb_size_t is 16-bit */
790 : #define PB_FIELDINFO_ASSERT_4(tag, type, data_offset, data_size, size_offset, array_size) \
791 : PB_STATIC_ASSERT(PB_FITS(tag,16) && PB_FITS(data_offset,16) && PB_FITS((int_least8_t)size_offset,8) && PB_FITS(data_size,16) && PB_FITS(array_size,16), FIELDINFO_DOES_NOT_FIT_width4_field ## tag)
792 :
793 : #define PB_FIELDINFO_ASSERT_8(tag, type, data_offset, data_size, size_offset, array_size) \
794 : PB_STATIC_ASSERT(PB_FITS(tag,16) && PB_FITS(data_offset,16) && PB_FITS((int_least8_t)size_offset,8) && PB_FITS(data_size,16) && PB_FITS(array_size,16), FIELDINFO_DOES_NOT_FIT_width8_field ## tag)
795 : #else
796 : /* Up to 32-bit fields supported.
797 : * Note that the checks are against 31 bits to avoid compiler warnings about shift wider than type in the test.
798 : * I expect that there is no reasonable use for >2GB messages with nanopb anyway.
799 : */
800 : #define PB_FIELDINFO_ASSERT_4(tag, type, data_offset, data_size, size_offset, array_size) \
801 : PB_STATIC_ASSERT(PB_FITS(tag,30) && PB_FITS(data_offset,31) && PB_FITS(size_offset,8) && PB_FITS(data_size,31) && PB_FITS(array_size,16), FIELDINFO_DOES_NOT_FIT_width4_field ## tag)
802 :
803 : #define PB_FIELDINFO_ASSERT_8(tag, type, data_offset, data_size, size_offset, array_size) \
804 : PB_STATIC_ASSERT(PB_FITS(tag,30) && PB_FITS(data_offset,31) && PB_FITS(size_offset,8) && PB_FITS(data_size,31) && PB_FITS(array_size,31), FIELDINFO_DOES_NOT_FIT_width8_field ## tag)
805 : #endif
806 :
807 :
808 : /* Automatic picking of FIELDINFO width:
809 : * Uses width 1 when possible, otherwise resorts to width 2.
810 : * This is used when PB_BIND() is called with "AUTO" as the argument.
811 : * The generator will give explicit size argument when it knows that a message
812 : * structure grows beyond 1-word format limits.
813 : */
814 : #define PB_FIELDINFO_WIDTH_AUTO(atype, htype, ltype) PB_FI_WIDTH ## atype(htype, ltype)
815 : #define PB_FI_WIDTH_PB_ATYPE_STATIC(htype, ltype) PB_FI_WIDTH ## htype(ltype)
816 : #define PB_FI_WIDTH_PB_ATYPE_POINTER(htype, ltype) PB_FI_WIDTH ## htype(ltype)
817 : #define PB_FI_WIDTH_PB_ATYPE_CALLBACK(htype, ltype) 2
818 : #define PB_FI_WIDTH_PB_HTYPE_REQUIRED(ltype) PB_FI_WIDTH ## ltype
819 : #define PB_FI_WIDTH_PB_HTYPE_SINGULAR(ltype) PB_FI_WIDTH ## ltype
820 : #define PB_FI_WIDTH_PB_HTYPE_OPTIONAL(ltype) PB_FI_WIDTH ## ltype
821 : #define PB_FI_WIDTH_PB_HTYPE_ONEOF(ltype) PB_FI_WIDTH ## ltype
822 : #define PB_FI_WIDTH_PB_HTYPE_REPEATED(ltype) 2
823 : #define PB_FI_WIDTH_PB_HTYPE_FIXARRAY(ltype) 2
824 : #define PB_FI_WIDTH_PB_LTYPE_BOOL 1
825 : #define PB_FI_WIDTH_PB_LTYPE_BYTES 2
826 : #define PB_FI_WIDTH_PB_LTYPE_DOUBLE 1
827 : #define PB_FI_WIDTH_PB_LTYPE_ENUM 1
828 : #define PB_FI_WIDTH_PB_LTYPE_UENUM 1
829 : #define PB_FI_WIDTH_PB_LTYPE_FIXED32 1
830 : #define PB_FI_WIDTH_PB_LTYPE_FIXED64 1
831 : #define PB_FI_WIDTH_PB_LTYPE_FLOAT 1
832 : #define PB_FI_WIDTH_PB_LTYPE_INT32 1
833 : #define PB_FI_WIDTH_PB_LTYPE_INT64 1
834 : #define PB_FI_WIDTH_PB_LTYPE_MESSAGE 2
835 : #define PB_FI_WIDTH_PB_LTYPE_MSG_W_CB 2
836 : #define PB_FI_WIDTH_PB_LTYPE_SFIXED32 1
837 : #define PB_FI_WIDTH_PB_LTYPE_SFIXED64 1
838 : #define PB_FI_WIDTH_PB_LTYPE_SINT32 1
839 : #define PB_FI_WIDTH_PB_LTYPE_SINT64 1
840 : #define PB_FI_WIDTH_PB_LTYPE_STRING 2
841 : #define PB_FI_WIDTH_PB_LTYPE_UINT32 1
842 : #define PB_FI_WIDTH_PB_LTYPE_UINT64 1
843 : #define PB_FI_WIDTH_PB_LTYPE_EXTENSION 1
844 : #define PB_FI_WIDTH_PB_LTYPE_FIXED_LENGTH_BYTES 2
845 :
846 : /* The mapping from protobuf types to LTYPEs is done using these macros. */
847 : #define PB_LTYPE_MAP_BOOL PB_LTYPE_BOOL
848 : #define PB_LTYPE_MAP_BYTES PB_LTYPE_BYTES
849 : #define PB_LTYPE_MAP_DOUBLE PB_LTYPE_FIXED64
850 : #define PB_LTYPE_MAP_ENUM PB_LTYPE_VARINT
851 : #define PB_LTYPE_MAP_UENUM PB_LTYPE_UVARINT
852 : #define PB_LTYPE_MAP_FIXED32 PB_LTYPE_FIXED32
853 : #define PB_LTYPE_MAP_FIXED64 PB_LTYPE_FIXED64
854 : #define PB_LTYPE_MAP_FLOAT PB_LTYPE_FIXED32
855 : #define PB_LTYPE_MAP_INT32 PB_LTYPE_VARINT
856 : #define PB_LTYPE_MAP_INT64 PB_LTYPE_VARINT
857 : #define PB_LTYPE_MAP_MESSAGE PB_LTYPE_SUBMESSAGE
858 : #define PB_LTYPE_MAP_MSG_W_CB PB_LTYPE_SUBMSG_W_CB
859 : #define PB_LTYPE_MAP_SFIXED32 PB_LTYPE_FIXED32
860 : #define PB_LTYPE_MAP_SFIXED64 PB_LTYPE_FIXED64
861 : #define PB_LTYPE_MAP_SINT32 PB_LTYPE_SVARINT
862 : #define PB_LTYPE_MAP_SINT64 PB_LTYPE_SVARINT
863 : #define PB_LTYPE_MAP_STRING PB_LTYPE_STRING
864 : #define PB_LTYPE_MAP_UINT32 PB_LTYPE_UVARINT
865 : #define PB_LTYPE_MAP_UINT64 PB_LTYPE_UVARINT
866 : #define PB_LTYPE_MAP_EXTENSION PB_LTYPE_EXTENSION
867 : #define PB_LTYPE_MAP_FIXED_LENGTH_BYTES PB_LTYPE_FIXED_LENGTH_BYTES
868 :
869 : /* These macros are used for giving out error messages.
870 : * They are mostly a debugging aid; the main error information
871 : * is the true/false return value from functions.
872 : * Some code space can be saved by disabling the error
873 : * messages if not used.
874 : *
875 : * PB_SET_ERROR() sets the error message if none has been set yet.
876 : * msg must be a constant string literal.
877 : * PB_GET_ERROR() always returns a pointer to a string.
878 : * PB_RETURN_ERROR() sets the error and returns false from current
879 : * function.
880 : */
881 : #ifdef PB_NO_ERRMSG
882 : #define PB_SET_ERROR(stream, msg) PB_UNUSED(stream)
883 : #define PB_GET_ERROR(stream) "(errmsg disabled)"
884 : #else
885 0 : #define PB_SET_ERROR(stream, msg) (stream->errmsg = (stream)->errmsg ? (stream)->errmsg : (msg))
886 : #define PB_GET_ERROR(stream) ((stream)->errmsg ? (stream)->errmsg : "(none)")
887 : #endif
888 :
889 0 : #define PB_RETURN_ERROR(stream, msg) return PB_SET_ERROR(stream, msg), false
890 :
891 : #ifdef __cplusplus
892 : } /* extern "C" */
893 : #endif
894 :
895 : #ifdef __cplusplus
896 : #if __cplusplus >= 201103L
897 : #define PB_CONSTEXPR constexpr
898 : #else // __cplusplus >= 201103L
899 : #define PB_CONSTEXPR
900 : #endif // __cplusplus >= 201103L
901 :
902 : #if __cplusplus >= 201703L
903 : #define PB_INLINE_CONSTEXPR inline constexpr
904 : #else // __cplusplus >= 201703L
905 : #define PB_INLINE_CONSTEXPR PB_CONSTEXPR
906 : #endif // __cplusplus >= 201703L
907 :
908 : extern "C++"
909 : {
910 : namespace nanopb {
911 : // Each type will be partially specialized by the generator.
912 : template <typename GenMessageT> struct MessageDescriptor;
913 : } // namespace nanopb
914 : }
915 : #endif /* __cplusplus */
916 :
917 : #endif
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