struct ProtobufCMessageDescriptor { /** Magic value checked to ensure that the API is used correctly. */ uint32_t magic;
/** The qualified name (e.g., "namespace.Type"). */ const char *name; /** The unqualified name as given in the .proto file (e.g., "Type"). */ const char *short_name; /** Identifier used in generated C code. */ const char *c_name; /** The dot-separated namespace. */ const char *package_name;
/** * Size in bytes of the C structure representing an instance of this * type of message. */ size_t sizeof_message;
/** Number of elements in `fields`. */ unsigned n_fields; /** Field descriptors, sorted by tag number. */ const ProtobufCFieldDescriptor *fields; /** Used for looking up fields by name. */ const unsigned *fields_sorted_by_name;
/** Number of elements in `field_ranges`. */ unsigned n_field_ranges; /** Used for looking up fields by id. */ const ProtobufCIntRange *field_ranges;
struct ProtobufCFieldDescriptor { /** Name of the field as given in the .proto file. */ const char *name;
/** Tag value of the field as given in the .proto file. */ uint32_t id;
/** Whether the field is `REQUIRED`, `OPTIONAL`, or `REPEATED`. */ ProtobufCLabel label;
/** The type of the field. */ ProtobufCType type;
/** * The offset in bytes of the message's C structure's quantifier field * (the `has_MEMBER` field for optional members or the `n_MEMBER` field * for repeated members or the case enum for oneofs). */ unsigned quantifier_offset;
/** * The offset in bytes into the message's C structure for the member * itself. */ unsigned offset;
/** * A type-specific descriptor. * * If `type` is `PROTOBUF_C_TYPE_ENUM`, then `descriptor` points to the * corresponding `ProtobufCEnumDescriptor`. * * If `type` is `PROTOBUF_C_TYPE_MESSAGE`, then `descriptor` points to * the corresponding `ProtobufCMessageDescriptor`. * * Otherwise this field is NULL. */ const void *descriptor; /* for MESSAGE and ENUM types */
/** The default value for this field, if defined. May be NULL. */ const void *default_value;
/** * A flag word. Zero or more of the bits defined in the * `ProtobufCFieldFlag` enum may be set. */ uint32_t flags;
/** Reserved for future use. */ unsigned reserved_flags; /** Reserved for future use. */ void *reserved2; /** Reserved for future use. */ void *reserved3; };
