1  /* { dg-do compile } */
       2  
       3  typedef unsigned _GCC_ATTR_ALIGN_u32t;
       4  typedef _GCC_ATTR_ALIGN_u32t _Uint32t __attribute__ ((__aligned__ (4)));
       5  typedef unsigned int _GCC_ATTR_ALIGN_u8t __attribute__ ((__mode__ (__QI__)));
       6  typedef _GCC_ATTR_ALIGN_u8t _Uint8t __attribute__ ((__aligned__ (1)));
       7  typedef unsigned _Sizet;
       8  typedef _Sizet size_t;
       9  typedef _Uint8t uint8_t;
      10  typedef _Uint32t uint32_t;
      11  typedef enum
      12  {
      13    PROTOBUF_C_LABEL_REQUIRED, PROTOBUF_C_LABEL_OPTIONAL,
      14      PROTOBUF_C_LABEL_REPEATED
      15  }
      16  ProtobufCLabel;
      17  typedef enum
      18  {
      19    PROTOBUF_C_TYPE_INT32, PROTOBUF_C_TYPE_SINT32, PROTOBUF_C_TYPE_SFIXED32,
      20      PROTOBUF_C_TYPE_INT64, PROTOBUF_C_TYPE_SINT64, PROTOBUF_C_TYPE_SFIXED64,
      21      PROTOBUF_C_TYPE_UINT32, PROTOBUF_C_TYPE_FIXED32, PROTOBUF_C_TYPE_UINT64,
      22      PROTOBUF_C_TYPE_FIXED64, PROTOBUF_C_TYPE_FLOAT, PROTOBUF_C_TYPE_DOUBLE,
      23      PROTOBUF_C_TYPE_BOOL, PROTOBUF_C_TYPE_ENUM, PROTOBUF_C_TYPE_STRING,
      24      PROTOBUF_C_TYPE_BYTES, PROTOBUF_C_TYPE_MESSAGE,
      25  }
      26  ProtobufCType;
      27  typedef struct _ProtobufCBinaryData ProtobufCBinaryData;
      28  struct _ProtobufCBinaryData
      29  {
      30    size_t len;
      31  };
      32  typedef struct _ProtobufCMessageDescriptor ProtobufCMessageDescriptor;
      33  typedef struct _ProtobufCFieldDescriptor ProtobufCFieldDescriptor;
      34  typedef struct _ProtobufCMessage ProtobufCMessage;
      35  struct _ProtobufCFieldDescriptor
      36  {
      37    uint32_t id;
      38    ProtobufCLabel label;
      39    ProtobufCType type;
      40    unsigned offset;
      41  };
      42  struct _ProtobufCMessageDescriptor
      43  {
      44    unsigned n_fields;
      45    const ProtobufCFieldDescriptor *fields;
      46  };
      47  struct _ProtobufCMessage
      48  {
      49    const ProtobufCMessageDescriptor *descriptor;
      50  };
      51  typedef enum
      52  {
      53    PROTOBUF_C_WIRE_TYPE_VARINT, PROTOBUF_C_WIRE_TYPE_64BIT,
      54      PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED, PROTOBUF_C_WIRE_TYPE_START_GROUP,
      55      PROTOBUF_C_WIRE_TYPE_END_GROUP, PROTOBUF_C_WIRE_TYPE_32BIT
      56  }
      57  ProtobufCWireType;
      58  size_t tag_pack (uint32_t, uint8_t *);
      59  size_t prefixed_message_pack (ProtobufCMessage *, uint8_t *);
      60  static inline size_t
      61  uint32_pack (uint32_t value, uint8_t * out)
      62  {
      63    unsigned rv = 0;
      64    if (value >= 0x80)
      65      {
      66        if (value >= 0x80)
      67  	{
      68  	  value >>= 7;
      69  	}
      70      }
      71    out[rv++] = value;
      72  }
      73  
      74  static inline size_t
      75  binary_data_pack (const ProtobufCBinaryData * bd, uint8_t * out)
      76  {
      77    size_t len = bd->len;
      78    size_t rv = uint32_pack (len, out);
      79    return rv + len;
      80  }
      81  
      82  static size_t
      83  required_field_pack (const ProtobufCFieldDescriptor * field,
      84  		     const void *member, uint8_t * out)
      85  {
      86    size_t rv = tag_pack (field->id, out);
      87    switch (field->type)
      88      {
      89      case PROTOBUF_C_TYPE_BYTES:
      90        {
      91  	const ProtobufCBinaryData *bd =
      92  	  ((const ProtobufCBinaryData *) member);
      93  	out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
      94  	return rv + binary_data_pack (bd, out + rv);
      95        }
      96      case PROTOBUF_C_TYPE_MESSAGE:
      97        {
      98  	out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED;
      99  	return rv +
     100  	  prefixed_message_pack (*(ProtobufCMessage * const *) member,
     101  				 out + rv);
     102        }
     103      }
     104  }
     105  
     106  size_t
     107  protobuf_c_message_pack (const ProtobufCMessage * message, uint8_t * out)
     108  {
     109    unsigned i;
     110    size_t rv = 0;
     111    for (i = 0; i < message->descriptor->n_fields; i++)
     112      {
     113        const ProtobufCFieldDescriptor *field = message->descriptor->fields + i;
     114        const void *member = ((const char *) message) + field->offset;
     115        if (field->label == PROTOBUF_C_LABEL_REQUIRED)
     116  	rv += required_field_pack (field, member, out + rv);
     117      }
     118  }