diff options
Diffstat (limited to 'include/lib')
| -rw-r--r-- | include/lib/nanopb/pb.h | 875 | ||||
| -rw-r--r-- | include/lib/nanopb/pb_common.h | 49 | ||||
| -rw-r--r-- | include/lib/nanopb/pb_decode.h | 199 | ||||
| -rw-r--r-- | include/lib/nanopb/pb_encode.h | 185 |
4 files changed, 1308 insertions, 0 deletions
diff --git a/include/lib/nanopb/pb.h b/include/lib/nanopb/pb.h new file mode 100644 index 0000000..03d476f --- /dev/null +++ b/include/lib/nanopb/pb.h @@ -0,0 +1,875 @@ +/* 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. */ +/* #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 */ + +/****************************************************************** + * 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-0.4.6-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 <stdint.h> +#include <stddef.h> +#include <stdbool.h> +#include <string.h> +#include <limits.h> + +#ifdef PB_ENABLE_MALLOC +#include <stdlib.h> +#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 + +/* 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 <avr/pgmspace.h> +#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(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L + /* C11 standard _Static_assert mechanism */ +# define PB_STATIC_ASSERT(COND,MSG) _Static_assert(COND,#MSG); +# else + /* 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 +# endif +# endif +#else + /* Static asserts disabled by PB_NO_STATIC_ASSERT */ +# define PB_STATIC_ASSERT(COND,MSG) +#endif + +/* 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_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<<bits)) +#define PB_FIELDINFO_ASSERT_1(tag, type, data_offset, data_size, size_offset, array_size) \ + 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) + +#define PB_FIELDINFO_ASSERT_2(tag, type, data_offset, data_size, size_offset, array_size) \ + 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) + +#ifndef PB_FIELD_32BIT +/* Maximum field sizes are still 16-bit if pb_size_t is 16-bit */ +#define PB_FIELDINFO_ASSERT_4(tag, type, data_offset, data_size, size_offset, array_size) \ + 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) + +#define PB_FIELDINFO_ASSERT_8(tag, type, data_offset, data_size, size_offset, array_size) \ + 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) +#else +/* Up to 32-bit fields supported. + * Note that the checks are against 31 bits to avoid compiler warnings about shift wider than type in the test. + * I expect that there is no reasonable use for >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 + +namespace nanopb { +// Each type will be partially specialized by the generator. +template <typename GenMessageT> struct MessageDescriptor; +} // namespace nanopb +#endif /* __cplusplus */ + +#endif + diff --git a/include/lib/nanopb/pb_common.h b/include/lib/nanopb/pb_common.h new file mode 100644 index 0000000..58aa90f --- /dev/null +++ b/include/lib/nanopb/pb_common.h @@ -0,0 +1,49 @@ +/* pb_common.h: Common support functions for pb_encode.c and pb_decode.c. + * These functions are rarely needed by applications directly. + */ + +#ifndef PB_COMMON_H_INCLUDED +#define PB_COMMON_H_INCLUDED + +#include "pb.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Initialize the field iterator structure to beginning. + * Returns false if the message type is empty. */ +bool pb_field_iter_begin(pb_field_iter_t *iter, const pb_msgdesc_t *desc, void *message); + +/* Get a field iterator for extension field. */ +bool pb_field_iter_begin_extension(pb_field_iter_t *iter, pb_extension_t *extension); + +/* Same as pb_field_iter_begin(), but for const message pointer. + * Note that the pointers in pb_field_iter_t will be non-const but shouldn't + * be written to when using these functions. */ +bool pb_field_iter_begin_const(pb_field_iter_t *iter, const pb_msgdesc_t *desc, const void *message); +bool pb_field_iter_begin_extension_const(pb_field_iter_t *iter, const pb_extension_t *extension); + +/* Advance the iterator to the next field. + * Returns false when the iterator wraps back to the first field. */ +bool pb_field_iter_next(pb_field_iter_t *iter); + +/* Advance the iterator until it points at a field with the given tag. + * Returns false if no such field exists. */ +bool pb_field_iter_find(pb_field_iter_t *iter, uint32_t tag); + +/* Find a field with type PB_LTYPE_EXTENSION, or return false if not found. + * There can be only one extension range field per message. */ +bool pb_field_iter_find_extension(pb_field_iter_t *iter); + +#ifdef PB_VALIDATE_UTF8 +/* Validate UTF-8 text string */ +bool pb_validate_utf8(const char *s); +#endif + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif + diff --git a/include/lib/nanopb/pb_decode.h b/include/lib/nanopb/pb_decode.h new file mode 100644 index 0000000..824acd4 --- /dev/null +++ b/include/lib/nanopb/pb_decode.h @@ -0,0 +1,199 @@ +/* pb_decode.h: Functions to decode protocol buffers. Depends on pb_decode.c. + * The main function is pb_decode. You also need an input stream, and the + * field descriptions created by nanopb_generator.py. + */ + +#ifndef PB_DECODE_H_INCLUDED +#define PB_DECODE_H_INCLUDED + +#include "pb.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Structure for defining custom input streams. You will need to provide + * a callback function to read the bytes from your storage, which can be + * for example a file or a network socket. + * + * The callback must conform to these rules: + * + * 1) Return false on IO errors. This will cause decoding to abort. + * 2) You can use state to store your own data (e.g. buffer pointer), + * and rely on pb_read to verify that no-body reads past bytes_left. + * 3) Your callback may be used with substreams, in which case bytes_left + * is different than from the main stream. Don't use bytes_left to compute + * any pointers. + */ +struct pb_istream_s +{ +#ifdef PB_BUFFER_ONLY + /* Callback pointer is not used in buffer-only configuration. + * Having an int pointer here allows binary compatibility but + * gives an error if someone tries to assign callback function. + */ + int *callback; +#else + bool (*callback)(pb_istream_t *stream, pb_byte_t *buf, size_t count); +#endif + + void *state; /* Free field for use by callback implementation */ + size_t bytes_left; + +#ifndef PB_NO_ERRMSG + const char *errmsg; +#endif +}; + +#ifndef PB_NO_ERRMSG +#define PB_ISTREAM_EMPTY {0,0,0,0} +#else +#define PB_ISTREAM_EMPTY {0,0,0} +#endif + +/*************************** + * Main decoding functions * + ***************************/ + +/* Decode a single protocol buffers message from input stream into a C structure. + * Returns true on success, false on any failure. + * The actual struct pointed to by dest must match the description in fields. + * Callback fields of the destination structure must be initialized by caller. + * All other fields will be initialized by this function. + * + * Example usage: + * MyMessage msg = {}; + * uint8_t buffer[64]; + * pb_istream_t stream; + * + * // ... read some data into buffer ... + * + * stream = pb_istream_from_buffer(buffer, count); + * pb_decode(&stream, MyMessage_fields, &msg); + */ +bool pb_decode(pb_istream_t *stream, const pb_msgdesc_t *fields, void *dest_struct); + +/* Extended version of pb_decode, with several options to control + * the decoding process: + * + * PB_DECODE_NOINIT: Do not initialize the fields to default values. + * This is slightly faster if you do not need the default + * values and instead initialize the structure to 0 using + * e.g. memset(). This can also be used for merging two + * messages, i.e. combine already existing data with new + * values. + * + * PB_DECODE_DELIMITED: Input message starts with the message size as varint. + * Corresponds to parseDelimitedFrom() in Google's + * protobuf API. + * + * PB_DECODE_NULLTERMINATED: Stop reading when field tag is read as 0. This allows + * reading null terminated messages. + * NOTE: Until nanopb-0.4.0, pb_decode() also allows + * null-termination. This behaviour is not supported in + * most other protobuf implementations, so PB_DECODE_DELIMITED + * is a better option for compatibility. + * + * Multiple flags can be combined with bitwise or (| operator) + */ +#define PB_DECODE_NOINIT 0x01U +#define PB_DECODE_DELIMITED 0x02U +#define PB_DECODE_NULLTERMINATED 0x04U +bool pb_decode_ex(pb_istream_t *stream, const pb_msgdesc_t *fields, void *dest_struct, unsigned int flags); + +/* Defines for backwards compatibility with code written before nanopb-0.4.0 */ +#define pb_decode_noinit(s,f,d) pb_decode_ex(s,f,d, PB_DECODE_NOINIT) +#define pb_decode_delimited(s,f,d) pb_decode_ex(s,f,d, PB_DECODE_DELIMITED) +#define pb_decode_delimited_noinit(s,f,d) pb_decode_ex(s,f,d, PB_DECODE_DELIMITED | PB_DECODE_NOINIT) +#define pb_decode_nullterminated(s,f,d) pb_decode_ex(s,f,d, PB_DECODE_NULLTERMINATED) + +#ifdef PB_ENABLE_MALLOC +/* Release any allocated pointer fields. If you use dynamic allocation, you should + * call this for any successfully decoded message when you are done with it. If + * pb_decode() returns with an error, the message is already released. + */ +void pb_release(const pb_msgdesc_t *fields, void *dest_struct); +#else +/* Allocation is not supported, so release is no-op */ +#define pb_release(fields, dest_struct) PB_UNUSED(fields); PB_UNUSED(dest_struct); +#endif + + +/************************************** + * Functions for manipulating streams * + **************************************/ + +/* Create an input stream for reading from a memory buffer. + * + * msglen should be the actual length of the message, not the full size of + * allocated buffer. + * + * Alternatively, you can use a custom stream that reads directly from e.g. + * a file or a network socket. + */ +pb_istream_t pb_istream_from_buffer(const pb_byte_t *buf, size_t msglen); + +/* Function to read from a pb_istream_t. You can use this if you need to + * read some custom header data, or to read data in field callbacks. + */ +bool pb_read(pb_istream_t *stream, pb_byte_t *buf, size_t count); + + +/************************************************ + * Helper functions for writing field callbacks * + ************************************************/ + +/* Decode the tag for the next field in the stream. Gives the wire type and + * field tag. At end of the message, returns false and sets eof to true. */ +bool pb_decode_tag(pb_istream_t *stream, pb_wire_type_t *wire_type, uint32_t *tag, bool *eof); + +/* Skip the field payload data, given the wire type. */ +bool pb_skip_field(pb_istream_t *stream, pb_wire_type_t wire_type); + +/* Decode an integer in the varint format. This works for enum, int32, + * int64, uint32 and uint64 field types. */ +#ifndef PB_WITHOUT_64BIT +bool pb_decode_varint(pb_istream_t *stream, uint64_t *dest); +#else +#define pb_decode_varint pb_decode_varint32 +#endif + +/* Decode an integer in the varint format. This works for enum, int32, + * and uint32 field types. */ +bool pb_decode_varint32(pb_istream_t *stream, uint32_t *dest); + +/* Decode a bool value in varint format. */ +bool pb_decode_bool(pb_istream_t *stream, bool *dest); + +/* Decode an integer in the zig-zagged svarint format. This works for sint32 + * and sint64. */ +#ifndef PB_WITHOUT_64BIT +bool pb_decode_svarint(pb_istream_t *stream, int64_t *dest); +#else +bool pb_decode_svarint(pb_istream_t *stream, int32_t *dest); +#endif + +/* Decode a fixed32, sfixed32 or float value. You need to pass a pointer to + * a 4-byte wide C variable. */ +bool pb_decode_fixed32(pb_istream_t *stream, void *dest); + +#ifndef PB_WITHOUT_64BIT +/* Decode a fixed64, sfixed64 or double value. You need to pass a pointer to + * a 8-byte wide C variable. */ +bool pb_decode_fixed64(pb_istream_t *stream, void *dest); +#endif + +#ifdef PB_CONVERT_DOUBLE_FLOAT +/* Decode a double value into float variable. */ +bool pb_decode_double_as_float(pb_istream_t *stream, float *dest); +#endif + +/* Make a limited-length substream for reading a PB_WT_STRING field. */ +bool pb_make_string_substream(pb_istream_t *stream, pb_istream_t *substream); +bool pb_close_string_substream(pb_istream_t *stream, pb_istream_t *substream); + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif diff --git a/include/lib/nanopb/pb_encode.h b/include/lib/nanopb/pb_encode.h new file mode 100644 index 0000000..9cff22a --- /dev/null +++ b/include/lib/nanopb/pb_encode.h @@ -0,0 +1,185 @@ +/* pb_encode.h: Functions to encode protocol buffers. Depends on pb_encode.c. + * The main function is pb_encode. You also need an output stream, and the + * field descriptions created by nanopb_generator.py. + */ + +#ifndef PB_ENCODE_H_INCLUDED +#define PB_ENCODE_H_INCLUDED + +#include "pb.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* Structure for defining custom output streams. You will need to provide + * a callback function to write the bytes to your storage, which can be + * for example a file or a network socket. + * + * The callback must conform to these rules: + * + * 1) Return false on IO errors. This will cause encoding to abort. + * 2) You can use state to store your own data (e.g. buffer pointer). + * 3) pb_write will update bytes_written after your callback runs. + * 4) Substreams will modify max_size and bytes_written. Don't use them + * to calculate any pointers. + */ +struct pb_ostream_s +{ +#ifdef PB_BUFFER_ONLY + /* Callback pointer is not used in buffer-only configuration. + * Having an int pointer here allows binary compatibility but + * gives an error if someone tries to assign callback function. + * Also, NULL pointer marks a 'sizing stream' that does not + * write anything. + */ + int *callback; +#else + bool (*callback)(pb_ostream_t *stream, const pb_byte_t *buf, size_t count); +#endif + void *state; /* Free field for use by callback implementation. */ + size_t max_size; /* Limit number of output bytes written (or use SIZE_MAX). */ + size_t bytes_written; /* Number of bytes written so far. */ + +#ifndef PB_NO_ERRMSG + const char *errmsg; +#endif +}; + +/*************************** + * Main encoding functions * + ***************************/ + +/* Encode a single protocol buffers message from C structure into a stream. + * Returns true on success, false on any failure. + * The actual struct pointed to by src_struct must match the description in fields. + * All required fields in the struct are assumed to have been filled in. + * + * Example usage: + * MyMessage msg = {}; + * uint8_t buffer[64]; + * pb_ostream_t stream; + * + * msg.field1 = 42; + * stream = pb_ostream_from_buffer(buffer, sizeof(buffer)); + * pb_encode(&stream, MyMessage_fields, &msg); + */ +bool pb_encode(pb_ostream_t *stream, const pb_msgdesc_t *fields, const void *src_struct); + +/* Extended version of pb_encode, with several options to control the + * encoding process: + * + * PB_ENCODE_DELIMITED: Prepend the length of message as a varint. + * Corresponds to writeDelimitedTo() in Google's + * protobuf API. + * + * PB_ENCODE_NULLTERMINATED: Append a null byte to the message for termination. + * NOTE: This behaviour is not supported in most other + * protobuf implementations, so PB_ENCODE_DELIMITED + * is a better option for compatibility. + */ +#define PB_ENCODE_DELIMITED 0x02U +#define PB_ENCODE_NULLTERMINATED 0x04U +bool pb_encode_ex(pb_ostream_t *stream, const pb_msgdesc_t *fields, const void *src_struct, unsigned int flags); + +/* Defines for backwards compatibility with code written before nanopb-0.4.0 */ +#define pb_encode_delimited(s,f,d) pb_encode_ex(s,f,d, PB_ENCODE_DELIMITED) +#define pb_encode_nullterminated(s,f,d) pb_encode_ex(s,f,d, PB_ENCODE_NULLTERMINATED) + +/* Encode the message to get the size of the encoded data, but do not store + * the data. */ +bool pb_get_encoded_size(size_t *size, const pb_msgdesc_t *fields, const void *src_struct); + +/************************************** + * Functions for manipulating streams * + **************************************/ + +/* Create an output stream for writing into a memory buffer. + * The number of bytes written can be found in stream.bytes_written after + * encoding the message. + * + * Alternatively, you can use a custom stream that writes directly to e.g. + * a file or a network socket. + */ +pb_ostream_t pb_ostream_from_buffer(pb_byte_t *buf, size_t bufsize); + +/* Pseudo-stream for measuring the size of a message without actually storing + * the encoded data. + * + * Example usage: + * MyMessage msg = {}; + * pb_ostream_t stream = PB_OSTREAM_SIZING; + * pb_encode(&stream, MyMessage_fields, &msg); + * printf("Message size is %d\n", stream.bytes_written); + */ +#ifndef PB_NO_ERRMSG +#define PB_OSTREAM_SIZING {0,0,0,0,0} +#else +#define PB_OSTREAM_SIZING {0,0,0,0} +#endif + +/* Function to write into a pb_ostream_t stream. You can use this if you need + * to append or prepend some custom headers to the message. + */ +bool pb_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count); + + +/************************************************ + * Helper functions for writing field callbacks * + ************************************************/ + +/* Encode field header based on type and field number defined in the field + * structure. Call this from the callback before writing out field contents. */ +bool pb_encode_tag_for_field(pb_ostream_t *stream, const pb_field_iter_t *field); + +/* Encode field header by manually specifying wire type. You need to use this + * if you want to write out packed arrays from a callback field. */ +bool pb_encode_tag(pb_ostream_t *stream, pb_wire_type_t wiretype, uint32_t field_number); + +/* Encode an integer in the varint format. + * This works for bool, enum, int32, int64, uint32 and uint64 field types. */ +#ifndef PB_WITHOUT_64BIT +bool pb_encode_varint(pb_ostream_t *stream, uint64_t value); +#else +bool pb_encode_varint(pb_ostream_t *stream, uint32_t value); +#endif + +/* Encode an integer in the zig-zagged svarint format. + * This works for sint32 and sint64. */ +#ifndef PB_WITHOUT_64BIT +bool pb_encode_svarint(pb_ostream_t *stream, int64_t value); +#else +bool pb_encode_svarint(pb_ostream_t *stream, int32_t value); +#endif + +/* Encode a string or bytes type field. For strings, pass strlen(s) as size. */ +bool pb_encode_string(pb_ostream_t *stream, const pb_byte_t *buffer, size_t size); + +/* Encode a fixed32, sfixed32 or float value. + * You need to pass a pointer to a 4-byte wide C variable. */ +bool pb_encode_fixed32(pb_ostream_t *stream, const void *value); + +#ifndef PB_WITHOUT_64BIT +/* Encode a fixed64, sfixed64 or double value. + * You need to pass a pointer to a 8-byte wide C variable. */ +bool pb_encode_fixed64(pb_ostream_t *stream, const void *value); +#endif + +#ifdef PB_CONVERT_DOUBLE_FLOAT +/* Encode a float value so that it appears like a double in the encoded + * message. */ +bool pb_encode_float_as_double(pb_ostream_t *stream, float value); +#endif + +/* Encode a submessage field. + * You need to pass the pb_field_t array and pointer to struct, just like + * with pb_encode(). This internally encodes the submessage twice, first to + * calculate message size and then to actually write it out. + */ +bool pb_encode_submessage(pb_ostream_t *stream, const pb_msgdesc_t *fields, const void *src_struct); + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif |