/* Common parts of the nanopb library. Most of these are quite low-level * stuff. For the high-level interface, see pb_encode.h and pb_decode.h. */ #ifndef PB_H_INCLUDED #define PB_H_INCLUDED /***************************************************************** * Nanopb compilation time options. You can change these here by * * uncommenting the lines, or on the compiler command line. * *****************************************************************/ /* Enable support for dynamically allocated fields */ /* #define PB_ENABLE_MALLOC 1 */ /* Define this if your CPU / compiler combination does not support * unaligned memory access to packed structures. Note that packed * structures are only used when requested in .proto options. */ /* #define PB_NO_PACKED_STRUCTS 1 */ /* Increase the number of required fields that are tracked. * A compiler warning will tell if you need this. */ /* #define PB_MAX_REQUIRED_FIELDS 256 */ /* Add support for tag numbers > 65536 and fields larger than 65536 bytes. */ /* #define PB_FIELD_32BIT 1 */ /* Disable support for error messages in order to save some code space. */ /* #define PB_NO_ERRMSG 1 */ /* Disable support for custom streams (support only memory buffers). */ /* #define PB_BUFFER_ONLY 1 */ /* Disable support for 64-bit datatypes, for compilers without int64_t or to save some code space. */ /* #define PB_WITHOUT_64BIT 1 */ /* Don't encode scalar arrays as packed. This is only to be used when * the decoder on the receiving side cannot process packed scalar arrays. * Such example is older protobuf.js. */ /* #define PB_ENCODE_ARRAYS_UNPACKED 1 */ /* Enable conversion of doubles to floats for platforms that do not * support 64-bit doubles. Most commonly AVR. */ /* #define PB_CONVERT_DOUBLE_FLOAT 1 */ /* Check whether incoming strings are valid UTF-8 sequences. Slows down * the string processing slightly and slightly increases code size. */ /* #define PB_VALIDATE_UTF8 1 */ /* This can be defined if the platform is little-endian and has 8-bit bytes. * Normally it is automatically detected based on __BYTE_ORDER__ macro. */ /* #define PB_LITTLE_ENDIAN_8BIT 1 */ /* Configure static assert mechanism. Instead of changing these, set your * compiler to C11 standard mode if possible. */ /* #define PB_C99_STATIC_ASSERT 1 */ /* #define PB_NO_STATIC_ASSERT 1 */ /****************************************************************** * You usually don't need to change anything below this line. * * Feel free to look around and use the defined macros, though. * ******************************************************************/ /* Version of the nanopb library. Just in case you want to check it in * your own program. */ #define NANOPB_VERSION "nanopb-0.4.9-dev" /* Include all the system headers needed by nanopb. You will need the * definitions of the following: * - strlen, memcpy, memset functions * - [u]int_least8_t, uint_fast8_t, [u]int_least16_t, [u]int32_t, [u]int64_t * - size_t * - bool * * If you don't have the standard header files, you can instead provide * a custom header that defines or includes all this. In that case, * define PB_SYSTEM_HEADER to the path of this file. */ #ifdef PB_SYSTEM_HEADER #include PB_SYSTEM_HEADER #else #include #include #include #include #include #ifdef PB_ENABLE_MALLOC #include #endif #endif #ifdef __cplusplus extern "C" { #endif /* Macro for defining packed structures (compiler dependent). * This just reduces memory requirements, but is not required. */ #if defined(PB_NO_PACKED_STRUCTS) /* Disable struct packing */ # define PB_PACKED_STRUCT_START # define PB_PACKED_STRUCT_END # define pb_packed #elif defined(__GNUC__) || defined(__clang__) /* For GCC and clang */ # define PB_PACKED_STRUCT_START # define PB_PACKED_STRUCT_END # define pb_packed __attribute__((packed)) #elif defined(__ICCARM__) || defined(__CC_ARM) /* For IAR ARM and Keil MDK-ARM compilers */ # define PB_PACKED_STRUCT_START _Pragma("pack(push, 1)") # define PB_PACKED_STRUCT_END _Pragma("pack(pop)") # define pb_packed #elif defined(_MSC_VER) && (_MSC_VER >= 1500) /* For Microsoft Visual C++ */ # define PB_PACKED_STRUCT_START __pragma(pack(push, 1)) # define PB_PACKED_STRUCT_END __pragma(pack(pop)) # define pb_packed #else /* Unknown compiler */ # define PB_PACKED_STRUCT_START # define PB_PACKED_STRUCT_END # define pb_packed #endif /* Detect endianness */ #ifndef PB_LITTLE_ENDIAN_8BIT #if ((defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN) || \ (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || \ defined(__LITTLE_ENDIAN__) || defined(__ARMEL__) || \ defined(__THUMBEL__) || defined(__AARCH64EL__) || defined(_MIPSEL) || \ defined(_M_IX86) || defined(_M_X64) || defined(_M_ARM)) \ && CHAR_BIT == 8 #define PB_LITTLE_ENDIAN_8BIT 1 #endif #endif /* Handly macro for suppressing unreferenced-parameter compiler warnings. */ #ifndef PB_UNUSED #define PB_UNUSED(x) (void)(x) #endif /* Harvard-architecture processors may need special attributes for storing * field information in program memory. */ #ifndef PB_PROGMEM #ifdef __AVR__ #include #define PB_PROGMEM PROGMEM #define PB_PROGMEM_READU32(x) pgm_read_dword(&x) #else #define PB_PROGMEM #define PB_PROGMEM_READU32(x) (x) #endif #endif /* Compile-time assertion, used for checking compatible compilation options. * If this does not work properly on your compiler, use * #define PB_NO_STATIC_ASSERT to disable it. * * But before doing that, check carefully the error message / place where it * comes from to see if the error has a real cause. Unfortunately the error * message is not always very clear to read, but you can see the reason better * in the place where the PB_STATIC_ASSERT macro was called. */ #ifndef PB_NO_STATIC_ASSERT # ifndef PB_STATIC_ASSERT # if defined(__ICCARM__) /* IAR has static_assert keyword but no _Static_assert */ # define PB_STATIC_ASSERT(COND,MSG) static_assert(COND,#MSG); # elif defined(_MSC_VER) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112) /* MSVC in C89 mode supports static_assert() keyword anyway */ # define PB_STATIC_ASSERT(COND,MSG) static_assert(COND,#MSG); # elif defined(PB_C99_STATIC_ASSERT) /* Classic negative-size-array static assert mechanism */ # define PB_STATIC_ASSERT(COND,MSG) typedef char PB_STATIC_ASSERT_MSG(MSG, __LINE__, __COUNTER__)[(COND)?1:-1]; # define PB_STATIC_ASSERT_MSG(MSG, LINE, COUNTER) PB_STATIC_ASSERT_MSG_(MSG, LINE, COUNTER) # define PB_STATIC_ASSERT_MSG_(MSG, LINE, COUNTER) pb_static_assertion_##MSG##_##LINE##_##COUNTER # elif defined(__cplusplus) /* C++11 standard static_assert mechanism */ # define PB_STATIC_ASSERT(COND,MSG) static_assert(COND,#MSG); # else /* C11 standard _Static_assert mechanism */ # define PB_STATIC_ASSERT(COND,MSG) _Static_assert(COND,#MSG); # endif # endif #else /* Static asserts disabled by PB_NO_STATIC_ASSERT */ # define PB_STATIC_ASSERT(COND,MSG) #endif /* Test that PB_STATIC_ASSERT works * If you get errors here, you may need to do one of these: * - Enable C11 standard support in your compiler * - Define PB_C99_STATIC_ASSERT to enable C99 standard support * - Define PB_NO_STATIC_ASSERT to disable static asserts altogether */ PB_STATIC_ASSERT(1, STATIC_ASSERT_IS_NOT_WORKING) /* Number of required fields to keep track of. */ #ifndef PB_MAX_REQUIRED_FIELDS #define PB_MAX_REQUIRED_FIELDS 64 #endif #if PB_MAX_REQUIRED_FIELDS < 64 #error You should not lower PB_MAX_REQUIRED_FIELDS from the default value (64). #endif #ifdef PB_WITHOUT_64BIT #ifdef PB_CONVERT_DOUBLE_FLOAT /* Cannot use doubles without 64-bit types */ #undef PB_CONVERT_DOUBLE_FLOAT #endif #endif /* List of possible field types. These are used in the autogenerated code. * Least-significant 4 bits tell the scalar type * Most-significant 4 bits specify repeated/required/packed etc. */ typedef uint_least8_t pb_type_t; /**** Field data types ****/ /* Numeric types */ #define PB_LTYPE_BOOL 0x00U /* bool */ #define PB_LTYPE_VARINT 0x01U /* int32, int64, enum, bool */ #define PB_LTYPE_UVARINT 0x02U /* uint32, uint64 */ #define PB_LTYPE_SVARINT 0x03U /* sint32, sint64 */ #define PB_LTYPE_FIXED32 0x04U /* fixed32, sfixed32, float */ #define PB_LTYPE_FIXED64 0x05U /* fixed64, sfixed64, double */ /* Marker for last packable field type. */ #define PB_LTYPE_LAST_PACKABLE 0x05U /* Byte array with pre-allocated buffer. * data_size is the length of the allocated PB_BYTES_ARRAY structure. */ #define PB_LTYPE_BYTES 0x06U /* String with pre-allocated buffer. * data_size is the maximum length. */ #define PB_LTYPE_STRING 0x07U /* Submessage * submsg_fields is pointer to field descriptions */ #define PB_LTYPE_SUBMESSAGE 0x08U /* Submessage with pre-decoding callback * The pre-decoding callback is stored as pb_callback_t right before pSize. * submsg_fields is pointer to field descriptions */ #define PB_LTYPE_SUBMSG_W_CB 0x09U /* Extension pseudo-field * The field contains a pointer to pb_extension_t */ #define PB_LTYPE_EXTENSION 0x0AU /* Byte array with inline, pre-allocated byffer. * data_size is the length of the inline, allocated buffer. * This differs from PB_LTYPE_BYTES by defining the element as * pb_byte_t[data_size] rather than pb_bytes_array_t. */ #define PB_LTYPE_FIXED_LENGTH_BYTES 0x0BU /* Number of declared LTYPES */ #define PB_LTYPES_COUNT 0x0CU #define PB_LTYPE_MASK 0x0FU /**** Field repetition rules ****/ #define PB_HTYPE_REQUIRED 0x00U #define PB_HTYPE_OPTIONAL 0x10U #define PB_HTYPE_SINGULAR 0x10U #define PB_HTYPE_REPEATED 0x20U #define PB_HTYPE_FIXARRAY 0x20U #define PB_HTYPE_ONEOF 0x30U #define PB_HTYPE_MASK 0x30U /**** Field allocation types ****/ #define PB_ATYPE_STATIC 0x00U #define PB_ATYPE_POINTER 0x80U #define PB_ATYPE_CALLBACK 0x40U #define PB_ATYPE_MASK 0xC0U #define PB_ATYPE(x) ((x) & PB_ATYPE_MASK) #define PB_HTYPE(x) ((x) & PB_HTYPE_MASK) #define PB_LTYPE(x) ((x) & PB_LTYPE_MASK) #define PB_LTYPE_IS_SUBMSG(x) (PB_LTYPE(x) == PB_LTYPE_SUBMESSAGE || \ PB_LTYPE(x) == PB_LTYPE_SUBMSG_W_CB) /* Data type used for storing sizes of struct fields * and array counts. */ #if defined(PB_FIELD_32BIT) typedef uint32_t pb_size_t; typedef int32_t pb_ssize_t; #else typedef uint_least16_t pb_size_t; typedef int_least16_t pb_ssize_t; #endif #define PB_SIZE_MAX ((pb_size_t)-1) /* Data type for storing encoded data and other byte streams. * This typedef exists to support platforms where uint8_t does not exist. * You can regard it as equivalent on uint8_t on other platforms. */ typedef uint_least8_t pb_byte_t; /* Forward declaration of struct types */ typedef struct pb_istream_s pb_istream_t; typedef struct pb_ostream_s pb_ostream_t; typedef struct pb_field_iter_s pb_field_iter_t; /* This structure is used in auto-generated constants * to specify struct fields. */ typedef struct pb_msgdesc_s pb_msgdesc_t; struct pb_msgdesc_s { const uint32_t *field_info; const pb_msgdesc_t * const * submsg_info; const pb_byte_t *default_value; bool (*field_callback)(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_iter_t *field); pb_size_t field_count; pb_size_t required_field_count; pb_size_t largest_tag; }; /* Iterator for message descriptor */ struct pb_field_iter_s { const pb_msgdesc_t *descriptor; /* Pointer to message descriptor constant */ void *message; /* Pointer to start of the structure */ pb_size_t index; /* Index of the field */ pb_size_t field_info_index; /* Index to descriptor->field_info array */ pb_size_t required_field_index; /* Index that counts only the required fields */ pb_size_t submessage_index; /* Index that counts only submessages */ pb_size_t tag; /* Tag of current field */ pb_size_t data_size; /* sizeof() of a single item */ pb_size_t array_size; /* Number of array entries */ pb_type_t type; /* Type of current field */ void *pField; /* Pointer to current field in struct */ void *pData; /* Pointer to current data contents. Different than pField for arrays and pointers. */ void *pSize; /* Pointer to count/has field */ const pb_msgdesc_t *submsg_desc; /* For submessage fields, pointer to field descriptor for the submessage. */ }; /* For compatibility with legacy code */ typedef pb_field_iter_t pb_field_t; /* Make sure that the standard integer types are of the expected sizes. * Otherwise fixed32/fixed64 fields can break. * * If you get errors here, it probably means that your stdint.h is not * correct for your platform. */ #ifndef PB_WITHOUT_64BIT PB_STATIC_ASSERT(sizeof(int64_t) == 2 * sizeof(int32_t), INT64_T_WRONG_SIZE) PB_STATIC_ASSERT(sizeof(uint64_t) == 2 * sizeof(uint32_t), UINT64_T_WRONG_SIZE) #endif /* This structure is used for 'bytes' arrays. * It has the number of bytes in the beginning, and after that an array. * Note that actual structs used will have a different length of bytes array. */ #define PB_BYTES_ARRAY_T(n) struct { pb_size_t size; pb_byte_t bytes[n]; } #define PB_BYTES_ARRAY_T_ALLOCSIZE(n) ((size_t)n + offsetof(pb_bytes_array_t, bytes)) struct pb_bytes_array_s { pb_size_t size; pb_byte_t bytes[1]; }; typedef struct pb_bytes_array_s pb_bytes_array_t; /* This structure is used for giving the callback function. * It is stored in the message structure and filled in by the method that * calls pb_decode. * * The decoding callback will be given a limited-length stream * If the wire type was string, the length is the length of the string. * If the wire type was a varint/fixed32/fixed64, the length is the length * of the actual value. * The function may be called multiple times (especially for repeated types, * but also otherwise if the message happens to contain the field multiple * times.) * * The encoding callback will receive the actual output stream. * It should write all the data in one call, including the field tag and * wire type. It can write multiple fields. * * The callback can be null if you want to skip a field. */ typedef struct pb_callback_s pb_callback_t; struct pb_callback_s { /* Callback functions receive a pointer to the arg field. * You can access the value of the field as *arg, and modify it if needed. */ union { bool (*decode)(pb_istream_t *stream, const pb_field_t *field, void **arg); bool (*encode)(pb_ostream_t *stream, const pb_field_t *field, void * const *arg); } funcs; /* Free arg for use by callback */ void *arg; }; extern bool pb_default_field_callback(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_t *field); /* Wire types. Library user needs these only in encoder callbacks. */ typedef enum { PB_WT_VARINT = 0, PB_WT_64BIT = 1, PB_WT_STRING = 2, PB_WT_32BIT = 5, PB_WT_PACKED = 255 /* PB_WT_PACKED is internal marker for packed arrays. */ } pb_wire_type_t; /* Structure for defining the handling of unknown/extension fields. * Usually the pb_extension_type_t structure is automatically generated, * while the pb_extension_t structure is created by the user. However, * if you want to catch all unknown fields, you can also create a custom * pb_extension_type_t with your own callback. */ typedef struct pb_extension_type_s pb_extension_type_t; typedef struct pb_extension_s pb_extension_t; struct pb_extension_type_s { /* Called for each unknown field in the message. * If you handle the field, read off all of its data and return true. * If you do not handle the field, do not read anything and return true. * If you run into an error, return false. * Set to NULL for default handler. */ bool (*decode)(pb_istream_t *stream, pb_extension_t *extension, uint32_t tag, pb_wire_type_t wire_type); /* Called once after all regular fields have been encoded. * If you have something to write, do so and return true. * If you do not have anything to write, just return true. * If you run into an error, return false. * Set to NULL for default handler. */ bool (*encode)(pb_ostream_t *stream, const pb_extension_t *extension); /* Free field for use by the callback. */ const void *arg; }; struct pb_extension_s { /* Type describing the extension field. Usually you'll initialize * this to a pointer to the automatically generated structure. */ const pb_extension_type_t *type; /* Destination for the decoded data. This must match the datatype * of the extension field. */ void *dest; /* Pointer to the next extension handler, or NULL. * If this extension does not match a field, the next handler is * automatically called. */ pb_extension_t *next; /* The decoder sets this to true if the extension was found. * Ignored for encoding. */ bool found; }; #define pb_extension_init_zero {NULL,NULL,NULL,false} /* Memory allocation functions to use. You can define pb_realloc and * pb_free to custom functions if you want. */ #ifdef PB_ENABLE_MALLOC # ifndef pb_realloc # define pb_realloc(ptr, size) realloc(ptr, size) # endif # ifndef pb_free # define pb_free(ptr) free(ptr) # endif #endif /* This is used to inform about need to regenerate .pb.h/.pb.c files. */ #define PB_PROTO_HEADER_VERSION 40 /* These macros are used to declare pb_field_t's in the constant array. */ /* Size of a structure member, in bytes. */ #define pb_membersize(st, m) (sizeof ((st*)0)->m) /* Number of entries in an array. */ #define pb_arraysize(st, m) (pb_membersize(st, m) / pb_membersize(st, m[0])) /* Delta from start of one member to the start of another member. */ #define pb_delta(st, m1, m2) ((int)offsetof(st, m1) - (int)offsetof(st, m2)) /* Force expansion of macro value */ #define PB_EXPAND(x) x /* Binding of a message field set into a specific structure */ #define PB_BIND(msgname, structname, width) \ const uint32_t structname ## _field_info[] PB_PROGMEM = \ { \ msgname ## _FIELDLIST(PB_GEN_FIELD_INFO_ ## width, structname) \ 0 \ }; \ const pb_msgdesc_t* const structname ## _submsg_info[] = \ { \ msgname ## _FIELDLIST(PB_GEN_SUBMSG_INFO, structname) \ NULL \ }; \ const pb_msgdesc_t structname ## _msg = \ { \ structname ## _field_info, \ structname ## _submsg_info, \ msgname ## _DEFAULT, \ msgname ## _CALLBACK, \ 0 msgname ## _FIELDLIST(PB_GEN_FIELD_COUNT, structname), \ 0 msgname ## _FIELDLIST(PB_GEN_REQ_FIELD_COUNT, structname), \ 0 msgname ## _FIELDLIST(PB_GEN_LARGEST_TAG, structname), \ }; \ msgname ## _FIELDLIST(PB_GEN_FIELD_INFO_ASSERT_ ## width, structname) #define PB_GEN_FIELD_COUNT(structname, atype, htype, ltype, fieldname, tag) +1 #define PB_GEN_REQ_FIELD_COUNT(structname, atype, htype, ltype, fieldname, tag) \ + (PB_HTYPE_ ## htype == PB_HTYPE_REQUIRED) #define PB_GEN_LARGEST_TAG(structname, atype, htype, ltype, fieldname, tag) \ * 0 + tag /* X-macro for generating the entries in struct_field_info[] array. */ #define PB_GEN_FIELD_INFO_1(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_1(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_GEN_FIELD_INFO_2(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_2(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_GEN_FIELD_INFO_4(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_4(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_GEN_FIELD_INFO_8(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_8(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_GEN_FIELD_INFO_AUTO(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_AUTO2(PB_FIELDINFO_WIDTH_AUTO(_PB_ATYPE_ ## atype, _PB_HTYPE_ ## htype, _PB_LTYPE_ ## ltype), \ tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_FIELDINFO_AUTO2(width, tag, type, data_offset, data_size, size_offset, array_size) \ PB_FIELDINFO_AUTO3(width, tag, type, data_offset, data_size, size_offset, array_size) #define PB_FIELDINFO_AUTO3(width, tag, type, data_offset, data_size, size_offset, array_size) \ PB_FIELDINFO_ ## width(tag, type, data_offset, data_size, size_offset, array_size) /* X-macro for generating asserts that entries fit in struct_field_info[] array. * The structure of macros here must match the structure above in PB_GEN_FIELD_INFO_x(), * but it is not easily reused because of how macro substitutions work. */ #define PB_GEN_FIELD_INFO_ASSERT_1(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_ASSERT_1(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_GEN_FIELD_INFO_ASSERT_2(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_ASSERT_2(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_GEN_FIELD_INFO_ASSERT_4(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_ASSERT_4(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_GEN_FIELD_INFO_ASSERT_8(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_ASSERT_8(tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_GEN_FIELD_INFO_ASSERT_AUTO(structname, atype, htype, ltype, fieldname, tag) \ PB_FIELDINFO_ASSERT_AUTO2(PB_FIELDINFO_WIDTH_AUTO(_PB_ATYPE_ ## atype, _PB_HTYPE_ ## htype, _PB_LTYPE_ ## ltype), \ tag, PB_ATYPE_ ## atype | PB_HTYPE_ ## htype | PB_LTYPE_MAP_ ## ltype, \ PB_DATA_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_DATA_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_SIZE_OFFSET_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname), \ PB_ARRAY_SIZE_ ## atype(_PB_HTYPE_ ## htype, structname, fieldname)) #define PB_FIELDINFO_ASSERT_AUTO2(width, tag, type, data_offset, data_size, size_offset, array_size) \ PB_FIELDINFO_ASSERT_AUTO3(width, tag, type, data_offset, data_size, size_offset, array_size) #define PB_FIELDINFO_ASSERT_AUTO3(width, tag, type, data_offset, data_size, size_offset, array_size) \ PB_FIELDINFO_ASSERT_ ## width(tag, type, data_offset, data_size, size_offset, array_size) #define PB_DATA_OFFSET_STATIC(htype, structname, fieldname) PB_DO ## htype(structname, fieldname) #define PB_DATA_OFFSET_POINTER(htype, structname, fieldname) PB_DO ## htype(structname, fieldname) #define PB_DATA_OFFSET_CALLBACK(htype, structname, fieldname) PB_DO ## htype(structname, fieldname) #define PB_DO_PB_HTYPE_REQUIRED(structname, fieldname) offsetof(structname, fieldname) #define PB_DO_PB_HTYPE_SINGULAR(structname, fieldname) offsetof(structname, fieldname) #define PB_DO_PB_HTYPE_ONEOF(structname, fieldname) offsetof(structname, PB_ONEOF_NAME(FULL, fieldname)) #define PB_DO_PB_HTYPE_OPTIONAL(structname, fieldname) offsetof(structname, fieldname) #define PB_DO_PB_HTYPE_REPEATED(structname, fieldname) offsetof(structname, fieldname) #define PB_DO_PB_HTYPE_FIXARRAY(structname, fieldname) offsetof(structname, fieldname) #define PB_SIZE_OFFSET_STATIC(htype, structname, fieldname) PB_SO ## htype(structname, fieldname) #define PB_SIZE_OFFSET_POINTER(htype, structname, fieldname) PB_SO_PTR ## htype(structname, fieldname) #define PB_SIZE_OFFSET_CALLBACK(htype, structname, fieldname) PB_SO_CB ## htype(structname, fieldname) #define PB_SO_PB_HTYPE_REQUIRED(structname, fieldname) 0 #define PB_SO_PB_HTYPE_SINGULAR(structname, fieldname) 0 #define PB_SO_PB_HTYPE_ONEOF(structname, fieldname) PB_SO_PB_HTYPE_ONEOF2(structname, PB_ONEOF_NAME(FULL, fieldname), PB_ONEOF_NAME(UNION, fieldname)) #define PB_SO_PB_HTYPE_ONEOF2(structname, fullname, unionname) PB_SO_PB_HTYPE_ONEOF3(structname, fullname, unionname) #define PB_SO_PB_HTYPE_ONEOF3(structname, fullname, unionname) pb_delta(structname, fullname, which_ ## unionname) #define PB_SO_PB_HTYPE_OPTIONAL(structname, fieldname) pb_delta(structname, fieldname, has_ ## fieldname) #define PB_SO_PB_HTYPE_REPEATED(structname, fieldname) pb_delta(structname, fieldname, fieldname ## _count) #define PB_SO_PB_HTYPE_FIXARRAY(structname, fieldname) 0 #define PB_SO_PTR_PB_HTYPE_REQUIRED(structname, fieldname) 0 #define PB_SO_PTR_PB_HTYPE_SINGULAR(structname, fieldname) 0 #define PB_SO_PTR_PB_HTYPE_ONEOF(structname, fieldname) PB_SO_PB_HTYPE_ONEOF(structname, fieldname) #define PB_SO_PTR_PB_HTYPE_OPTIONAL(structname, fieldname) 0 #define PB_SO_PTR_PB_HTYPE_REPEATED(structname, fieldname) PB_SO_PB_HTYPE_REPEATED(structname, fieldname) #define PB_SO_PTR_PB_HTYPE_FIXARRAY(structname, fieldname) 0 #define PB_SO_CB_PB_HTYPE_REQUIRED(structname, fieldname) 0 #define PB_SO_CB_PB_HTYPE_SINGULAR(structname, fieldname) 0 #define PB_SO_CB_PB_HTYPE_ONEOF(structname, fieldname) PB_SO_PB_HTYPE_ONEOF(structname, fieldname) #define PB_SO_CB_PB_HTYPE_OPTIONAL(structname, fieldname) 0 #define PB_SO_CB_PB_HTYPE_REPEATED(structname, fieldname) 0 #define PB_SO_CB_PB_HTYPE_FIXARRAY(structname, fieldname) 0 #define PB_ARRAY_SIZE_STATIC(htype, structname, fieldname) PB_AS ## htype(structname, fieldname) #define PB_ARRAY_SIZE_POINTER(htype, structname, fieldname) PB_AS_PTR ## htype(structname, fieldname) #define PB_ARRAY_SIZE_CALLBACK(htype, structname, fieldname) 1 #define PB_AS_PB_HTYPE_REQUIRED(structname, fieldname) 1 #define PB_AS_PB_HTYPE_SINGULAR(structname, fieldname) 1 #define PB_AS_PB_HTYPE_OPTIONAL(structname, fieldname) 1 #define PB_AS_PB_HTYPE_ONEOF(structname, fieldname) 1 #define PB_AS_PB_HTYPE_REPEATED(structname, fieldname) pb_arraysize(structname, fieldname) #define PB_AS_PB_HTYPE_FIXARRAY(structname, fieldname) pb_arraysize(structname, fieldname) #define PB_AS_PTR_PB_HTYPE_REQUIRED(structname, fieldname) 1 #define PB_AS_PTR_PB_HTYPE_SINGULAR(structname, fieldname) 1 #define PB_AS_PTR_PB_HTYPE_OPTIONAL(structname, fieldname) 1 #define PB_AS_PTR_PB_HTYPE_ONEOF(structname, fieldname) 1 #define PB_AS_PTR_PB_HTYPE_REPEATED(structname, fieldname) 1 #define PB_AS_PTR_PB_HTYPE_FIXARRAY(structname, fieldname) pb_arraysize(structname, fieldname[0]) #define PB_DATA_SIZE_STATIC(htype, structname, fieldname) PB_DS ## htype(structname, fieldname) #define PB_DATA_SIZE_POINTER(htype, structname, fieldname) PB_DS_PTR ## htype(structname, fieldname) #define PB_DATA_SIZE_CALLBACK(htype, structname, fieldname) PB_DS_CB ## htype(structname, fieldname) #define PB_DS_PB_HTYPE_REQUIRED(structname, fieldname) pb_membersize(structname, fieldname) #define PB_DS_PB_HTYPE_SINGULAR(structname, fieldname) pb_membersize(structname, fieldname) #define PB_DS_PB_HTYPE_OPTIONAL(structname, fieldname) pb_membersize(structname, fieldname) #define PB_DS_PB_HTYPE_ONEOF(structname, fieldname) pb_membersize(structname, PB_ONEOF_NAME(FULL, fieldname)) #define PB_DS_PB_HTYPE_REPEATED(structname, fieldname) pb_membersize(structname, fieldname[0]) #define PB_DS_PB_HTYPE_FIXARRAY(structname, fieldname) pb_membersize(structname, fieldname[0]) #define PB_DS_PTR_PB_HTYPE_REQUIRED(structname, fieldname) pb_membersize(structname, fieldname[0]) #define PB_DS_PTR_PB_HTYPE_SINGULAR(structname, fieldname) pb_membersize(structname, fieldname[0]) #define PB_DS_PTR_PB_HTYPE_OPTIONAL(structname, fieldname) pb_membersize(structname, fieldname[0]) #define PB_DS_PTR_PB_HTYPE_ONEOF(structname, fieldname) pb_membersize(structname, PB_ONEOF_NAME(FULL, fieldname)[0]) #define PB_DS_PTR_PB_HTYPE_REPEATED(structname, fieldname) pb_membersize(structname, fieldname[0]) #define PB_DS_PTR_PB_HTYPE_FIXARRAY(structname, fieldname) pb_membersize(structname, fieldname[0][0]) #define PB_DS_CB_PB_HTYPE_REQUIRED(structname, fieldname) pb_membersize(structname, fieldname) #define PB_DS_CB_PB_HTYPE_SINGULAR(structname, fieldname) pb_membersize(structname, fieldname) #define PB_DS_CB_PB_HTYPE_OPTIONAL(structname, fieldname) pb_membersize(structname, fieldname) #define PB_DS_CB_PB_HTYPE_ONEOF(structname, fieldname) pb_membersize(structname, PB_ONEOF_NAME(FULL, fieldname)) #define PB_DS_CB_PB_HTYPE_REPEATED(structname, fieldname) pb_membersize(structname, fieldname) #define PB_DS_CB_PB_HTYPE_FIXARRAY(structname, fieldname) pb_membersize(structname, fieldname) #define PB_ONEOF_NAME(type, tuple) PB_EXPAND(PB_ONEOF_NAME_ ## type tuple) #define PB_ONEOF_NAME_UNION(unionname,membername,fullname) unionname #define PB_ONEOF_NAME_MEMBER(unionname,membername,fullname) membername #define PB_ONEOF_NAME_FULL(unionname,membername,fullname) fullname #define PB_GEN_SUBMSG_INFO(structname, atype, htype, ltype, fieldname, tag) \ PB_SUBMSG_INFO_ ## htype(_PB_LTYPE_ ## ltype, structname, fieldname) #define PB_SUBMSG_INFO_REQUIRED(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE) #define PB_SUBMSG_INFO_SINGULAR(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE) #define PB_SUBMSG_INFO_OPTIONAL(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE) #define PB_SUBMSG_INFO_ONEOF(ltype, structname, fieldname) PB_SUBMSG_INFO_ONEOF2(ltype, structname, PB_ONEOF_NAME(UNION, fieldname), PB_ONEOF_NAME(MEMBER, fieldname)) #define PB_SUBMSG_INFO_ONEOF2(ltype, structname, unionname, membername) PB_SUBMSG_INFO_ONEOF3(ltype, structname, unionname, membername) #define PB_SUBMSG_INFO_ONEOF3(ltype, structname, unionname, membername) PB_SI ## ltype(structname ## _ ## unionname ## _ ## membername ## _MSGTYPE) #define PB_SUBMSG_INFO_REPEATED(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE) #define PB_SUBMSG_INFO_FIXARRAY(ltype, structname, fieldname) PB_SI ## ltype(structname ## _ ## fieldname ## _MSGTYPE) #define PB_SI_PB_LTYPE_BOOL(t) #define PB_SI_PB_LTYPE_BYTES(t) #define PB_SI_PB_LTYPE_DOUBLE(t) #define PB_SI_PB_LTYPE_ENUM(t) #define PB_SI_PB_LTYPE_UENUM(t) #define PB_SI_PB_LTYPE_FIXED32(t) #define PB_SI_PB_LTYPE_FIXED64(t) #define PB_SI_PB_LTYPE_FLOAT(t) #define PB_SI_PB_LTYPE_INT32(t) #define PB_SI_PB_LTYPE_INT64(t) #define PB_SI_PB_LTYPE_MESSAGE(t) PB_SUBMSG_DESCRIPTOR(t) #define PB_SI_PB_LTYPE_MSG_W_CB(t) PB_SUBMSG_DESCRIPTOR(t) #define PB_SI_PB_LTYPE_SFIXED32(t) #define PB_SI_PB_LTYPE_SFIXED64(t) #define PB_SI_PB_LTYPE_SINT32(t) #define PB_SI_PB_LTYPE_SINT64(t) #define PB_SI_PB_LTYPE_STRING(t) #define PB_SI_PB_LTYPE_UINT32(t) #define PB_SI_PB_LTYPE_UINT64(t) #define PB_SI_PB_LTYPE_EXTENSION(t) #define PB_SI_PB_LTYPE_FIXED_LENGTH_BYTES(t) #define PB_SUBMSG_DESCRIPTOR(t) &(t ## _msg), /* The field descriptors use a variable width format, with width of either * 1, 2, 4 or 8 of 32-bit words. The two lowest bytes of the first byte always * encode the descriptor size, 6 lowest bits of field tag number, and 8 bits * of the field type. * * Descriptor size is encoded as 0 = 1 word, 1 = 2 words, 2 = 4 words, 3 = 8 words. * * Formats, listed starting with the least significant bit of the first word. * 1 word: [2-bit len] [6-bit tag] [8-bit type] [8-bit data_offset] [4-bit size_offset] [4-bit data_size] * * 2 words: [2-bit len] [6-bit tag] [8-bit type] [12-bit array_size] [4-bit size_offset] * [16-bit data_offset] [12-bit data_size] [4-bit tag>>6] * * 4 words: [2-bit len] [6-bit tag] [8-bit type] [16-bit array_size] * [8-bit size_offset] [24-bit tag>>6] * [32-bit data_offset] * [32-bit data_size] * * 8 words: [2-bit len] [6-bit tag] [8-bit type] [16-bit reserved] * [8-bit size_offset] [24-bit tag>>6] * [32-bit data_offset] * [32-bit data_size] * [32-bit array_size] * [32-bit reserved] * [32-bit reserved] * [32-bit reserved] */ #define PB_FIELDINFO_1(tag, type, data_offset, data_size, size_offset, array_size) \ (0 | (((tag) << 2) & 0xFF) | ((type) << 8) | (((uint32_t)(data_offset) & 0xFF) << 16) | \ (((uint32_t)(size_offset) & 0x0F) << 24) | (((uint32_t)(data_size) & 0x0F) << 28)), #define PB_FIELDINFO_2(tag, type, data_offset, data_size, size_offset, array_size) \ (1 | (((tag) << 2) & 0xFF) | ((type) << 8) | (((uint32_t)(array_size) & 0xFFF) << 16) | (((uint32_t)(size_offset) & 0x0F) << 28)), \ (((uint32_t)(data_offset) & 0xFFFF) | (((uint32_t)(data_size) & 0xFFF) << 16) | (((uint32_t)(tag) & 0x3c0) << 22)), #define PB_FIELDINFO_4(tag, type, data_offset, data_size, size_offset, array_size) \ (2 | (((tag) << 2) & 0xFF) | ((type) << 8) | (((uint32_t)(array_size) & 0xFFFF) << 16)), \ ((uint32_t)(int_least8_t)(size_offset) | (((uint32_t)(tag) << 2) & 0xFFFFFF00)), \ (data_offset), (data_size), #define PB_FIELDINFO_8(tag, type, data_offset, data_size, size_offset, array_size) \ (3 | (((tag) << 2) & 0xFF) | ((type) << 8)), \ ((uint32_t)(int_least8_t)(size_offset) | (((uint32_t)(tag) << 2) & 0xFFFFFF00)), \ (data_offset), (data_size), (array_size), 0, 0, 0, /* These assertions verify that the field information fits in the allocated space. * The generator tries to automatically determine the correct width that can fit all * data associated with a message. These asserts will fail only if there has been a * problem in the automatic logic - this may be worth reporting as a bug. As a workaround, * you can increase the descriptor width by defining PB_FIELDINFO_WIDTH or by setting * descriptorsize option in .options file. */ #define PB_FITS(value,bits) ((uint32_t)(value) < ((uint32_t)1<2GB messages with nanopb anyway. */ #define PB_FIELDINFO_ASSERT_4(tag, type, data_offset, data_size, size_offset, array_size) \ 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) #define PB_FIELDINFO_ASSERT_8(tag, type, data_offset, data_size, size_offset, array_size) \ 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) #endif /* Automatic picking of FIELDINFO width: * Uses width 1 when possible, otherwise resorts to width 2. * This is used when PB_BIND() is called with "AUTO" as the argument. * The generator will give explicit size argument when it knows that a message * structure grows beyond 1-word format limits. */ #define PB_FIELDINFO_WIDTH_AUTO(atype, htype, ltype) PB_FI_WIDTH ## atype(htype, ltype) #define PB_FI_WIDTH_PB_ATYPE_STATIC(htype, ltype) PB_FI_WIDTH ## htype(ltype) #define PB_FI_WIDTH_PB_ATYPE_POINTER(htype, ltype) PB_FI_WIDTH ## htype(ltype) #define PB_FI_WIDTH_PB_ATYPE_CALLBACK(htype, ltype) 2 #define PB_FI_WIDTH_PB_HTYPE_REQUIRED(ltype) PB_FI_WIDTH ## ltype #define PB_FI_WIDTH_PB_HTYPE_SINGULAR(ltype) PB_FI_WIDTH ## ltype #define PB_FI_WIDTH_PB_HTYPE_OPTIONAL(ltype) PB_FI_WIDTH ## ltype #define PB_FI_WIDTH_PB_HTYPE_ONEOF(ltype) PB_FI_WIDTH ## ltype #define PB_FI_WIDTH_PB_HTYPE_REPEATED(ltype) 2 #define PB_FI_WIDTH_PB_HTYPE_FIXARRAY(ltype) 2 #define PB_FI_WIDTH_PB_LTYPE_BOOL 1 #define PB_FI_WIDTH_PB_LTYPE_BYTES 2 #define PB_FI_WIDTH_PB_LTYPE_DOUBLE 1 #define PB_FI_WIDTH_PB_LTYPE_ENUM 1 #define PB_FI_WIDTH_PB_LTYPE_UENUM 1 #define PB_FI_WIDTH_PB_LTYPE_FIXED32 1 #define PB_FI_WIDTH_PB_LTYPE_FIXED64 1 #define PB_FI_WIDTH_PB_LTYPE_FLOAT 1 #define PB_FI_WIDTH_PB_LTYPE_INT32 1 #define PB_FI_WIDTH_PB_LTYPE_INT64 1 #define PB_FI_WIDTH_PB_LTYPE_MESSAGE 2 #define PB_FI_WIDTH_PB_LTYPE_MSG_W_CB 2 #define PB_FI_WIDTH_PB_LTYPE_SFIXED32 1 #define PB_FI_WIDTH_PB_LTYPE_SFIXED64 1 #define PB_FI_WIDTH_PB_LTYPE_SINT32 1 #define PB_FI_WIDTH_PB_LTYPE_SINT64 1 #define PB_FI_WIDTH_PB_LTYPE_STRING 2 #define PB_FI_WIDTH_PB_LTYPE_UINT32 1 #define PB_FI_WIDTH_PB_LTYPE_UINT64 1 #define PB_FI_WIDTH_PB_LTYPE_EXTENSION 1 #define PB_FI_WIDTH_PB_LTYPE_FIXED_LENGTH_BYTES 2 /* The mapping from protobuf types to LTYPEs is done using these macros. */ #define PB_LTYPE_MAP_BOOL PB_LTYPE_BOOL #define PB_LTYPE_MAP_BYTES PB_LTYPE_BYTES #define PB_LTYPE_MAP_DOUBLE PB_LTYPE_FIXED64 #define PB_LTYPE_MAP_ENUM PB_LTYPE_VARINT #define PB_LTYPE_MAP_UENUM PB_LTYPE_UVARINT #define PB_LTYPE_MAP_FIXED32 PB_LTYPE_FIXED32 #define PB_LTYPE_MAP_FIXED64 PB_LTYPE_FIXED64 #define PB_LTYPE_MAP_FLOAT PB_LTYPE_FIXED32 #define PB_LTYPE_MAP_INT32 PB_LTYPE_VARINT #define PB_LTYPE_MAP_INT64 PB_LTYPE_VARINT #define PB_LTYPE_MAP_MESSAGE PB_LTYPE_SUBMESSAGE #define PB_LTYPE_MAP_MSG_W_CB PB_LTYPE_SUBMSG_W_CB #define PB_LTYPE_MAP_SFIXED32 PB_LTYPE_FIXED32 #define PB_LTYPE_MAP_SFIXED64 PB_LTYPE_FIXED64 #define PB_LTYPE_MAP_SINT32 PB_LTYPE_SVARINT #define PB_LTYPE_MAP_SINT64 PB_LTYPE_SVARINT #define PB_LTYPE_MAP_STRING PB_LTYPE_STRING #define PB_LTYPE_MAP_UINT32 PB_LTYPE_UVARINT #define PB_LTYPE_MAP_UINT64 PB_LTYPE_UVARINT #define PB_LTYPE_MAP_EXTENSION PB_LTYPE_EXTENSION #define PB_LTYPE_MAP_FIXED_LENGTH_BYTES PB_LTYPE_FIXED_LENGTH_BYTES /* These macros are used for giving out error messages. * They are mostly a debugging aid; the main error information * is the true/false return value from functions. * Some code space can be saved by disabling the error * messages if not used. * * PB_SET_ERROR() sets the error message if none has been set yet. * msg must be a constant string literal. * PB_GET_ERROR() always returns a pointer to a string. * PB_RETURN_ERROR() sets the error and returns false from current * function. */ #ifdef PB_NO_ERRMSG #define PB_SET_ERROR(stream, msg) PB_UNUSED(stream) #define PB_GET_ERROR(stream) "(errmsg disabled)" #else #define PB_SET_ERROR(stream, msg) (stream->errmsg = (stream)->errmsg ? (stream)->errmsg : (msg)) #define PB_GET_ERROR(stream) ((stream)->errmsg ? (stream)->errmsg : "(none)") #endif #define PB_RETURN_ERROR(stream, msg) return PB_SET_ERROR(stream, msg), false #ifdef __cplusplus } /* extern "C" */ #endif #ifdef __cplusplus #if __cplusplus >= 201103L #define PB_CONSTEXPR constexpr #else // __cplusplus >= 201103L #define PB_CONSTEXPR #endif // __cplusplus >= 201103L #if __cplusplus >= 201703L #define PB_INLINE_CONSTEXPR inline constexpr #else // __cplusplus >= 201703L #define PB_INLINE_CONSTEXPR PB_CONSTEXPR #endif // __cplusplus >= 201703L extern "C++" { namespace nanopb { // Each type will be partially specialized by the generator. template struct MessageDescriptor; } // namespace nanopb } #endif /* __cplusplus */ #endif