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#ifndef PROTOBUF_C_UTIL_H
#define PROTOBUF_C_UTIL_H
/** \file
* Internal utility header file.
* Macros used by the generator and parser parts of the library.
*
* \author Kevin Lyda <kevin@ie.suberic.net>
* \date March 2014
*/
/** \defgroup internal Internal API
*
* These are the functions and data structures used internally. They are
* not exported and are not useable by users of \c libprotobuf-c-text.
*/
/* These are lifted from the protobuf-c lib */
/** Used to define STRUCT_MEMBER() and STRUCT_MEMBER_PTR(). */
#define STRUCT_MEMBER_P(struct_p, struct_offset) \
((void *) ((uint8_t *) (struct_p) + (struct_offset)))
/** Return a field from a message based on offset and type. */
#define STRUCT_MEMBER(member_type, struct_p, struct_offset) \
(*(member_type *) STRUCT_MEMBER_P((struct_p), (struct_offset)))
/** Return a pointer to a field in a message based on offset and type. */
#define STRUCT_MEMBER_PTR(member_type, struct_p, struct_offset) \
((member_type *) STRUCT_MEMBER_P((struct_p), (struct_offset)))
/** Free possibly using the pbc allocator. */
#define PBC_FREE(ptr) (allocator? allocator->free(allocator->allocator_data, \
ptr): free(ptr))
/** Allocate possibly using the pbc allocator. */
#define PBC_ALLOC(size) (allocator? \
allocator->alloc(allocator->allocator_data, size): \
malloc(size))
/** Free possibly using the pbc allocator (state members). */
#define ST_FREE(ptr) (state->allocator? \
state->allocator->free(state->allocator-> \
allocator_data, ptr): \
free(ptr))
/** Allocate possibly using the pbc allocator (state members). */
#define ST_ALLOC(size) (state->allocator? \
state->allocator->alloc(state->allocator-> \
allocator_data, size): \
malloc(size))
#endif /* PROTOBUF_C_UTIL_H */
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