Freeciv

class _VecSize(SizeInfo):

"""Helper class to make SizeInfo methods work with strvec sizes"""

def __init__(self, location: Location):

super().__init__("GENERATE_PACKETS_ERROR", str(location))

def actual_for(self, packet: str) -> str:

return f"strvec_size({packet}->{self._actual})"

def __str__(self) -> str:

return "*"

"""

def _get_code_put_diff(self, location: Location) -> str:

size = __class__._VecSize(location)

index_put = prefix(" ", size.index_put(location.index))

index_put_sentinel = prefix(" ", size.index_put(size.real))

return f"""\

{size.size_check_index(location.name)}\

{{

int {location.index};

#ifdef FREECIV_JSON_CONNECTION

size_t count_{location.index} = 0;

/* Create the object to hold new size and delta. */

e |= DIO_PUT(object, &dout, &field_addr);

/* Enter object (start at size address). */

{location.json_subloc} = plocation_field_new("size");

#endif /* FREECIV_JSON_CONNECTION */

/* Write the new size */

e |= DIO_PUT(uint16, &dout, &field_addr, strvec_size(real_packet->{location}));

#ifdef FREECIV_JSON_CONNECTION

/* Delta address. */

{location.json_subloc}->name = "delta";

/* Create the array. */

e |= DIO_PUT(farray, &dout, &field_addr, 0);

/* Enter array. */

{location.json_subloc}->sub_location = plocation_elem_new(0);

#endif /* FREECIV_JSON_CONNECTION */

for ({location.index} = 0; {location.index} < strvec_size(real_packet->{location}); {location.index}++) {{

const char *pstr = strvec_get(real_packet->{location}, {location.index});

if (!pstr) {{

/* Transmit null strings as empty strings */

pstr = "";

}}

if ({location.index} < strvec_size(old->{location})) {{

const char *pstr_old = strvec_get(old->{location}, {location.index});

differ = (strcmp(pstr_old ? pstr_old : "", pstr) != 0);

}} else {{

/* Always transmit new elements */

differ = TRUE;

}}

if (differ) {{

#ifdef FREECIV_JSON_CONNECTION

/* Append next diff array element. */

{location.json_subloc}->sub_location->number = -1;

/* Create the diff array element. */

e |= DIO_PUT(object, &dout, &field_addr);

/* Enter diff array element (start at the index address). */

{location.json_subloc}->sub_location->number = count_{location.index}++;

{location.json_subloc}->sub_location->sub_location = plocation_field_new("index");

#endif /* FREECIV_JSON_CONNECTION */

/* Write the index */

{index_put}\

#ifdef FREECIV_JSON_CONNECTION

/* Content address. */

{location.json_subloc}->sub_location->sub_location->name = "data";

#endif /* FREECIV_JSON_CONNECTION */

e |= DIO_PUT({self.dataio_type}, &dout, &field_addr, pstr);

#ifdef FREECIV_JSON_CONNECTION

/* Exit diff array element. */

FC_FREE({location.json_subloc}->sub_location->sub_location);

#endif /* FREECIV_JSON_CONNECTION */

}}

}}

#ifdef FREECIV_JSON_CONNECTION

/* Append diff array element. */

{location.json_subloc}->sub_location->number = -1;

/* Create the terminating diff array element. */

e |= DIO_PUT(object, &dout, &field_addr);

/* Enter diff array element (start at the index address). */

{location.json_subloc}->sub_location->number = count_{location.index};

{location.json_subloc}->sub_location->sub_location = plocation_field_new("index");

#endif /* FREECIV_JSON_CONNECTION */

/* Write the sentinel value */

{index_put_sentinel}\

#ifdef FREECIV_JSON_CONNECTION

/* Exit diff array element. */

FC_FREE({location.json_subloc}->sub_location->sub_location);

/* Exit array. */

FC_FREE({location.json_subloc}->sub_location);

/* Exit object. */

FC_FREE({location.json_subloc});

#endif /* FREECIV_JSON_CONNECTION */

}}

if deep_diff:

return self._get_code_put_diff(location)

else:

return self._get_code_put_full(location)

"""

def _get_code_get_diff(self, location: Location) -> str:

size = __class__._VecSize(location)

index_get = prefix(" ", size.index_get(location))

return f"""\

{size.size_check_index(location.name)}\

#ifdef FREECIV_JSON_CONNECTION

/* Enter object (start at size address). */

{location.json_subloc} = plocation_field_new("size");

#endif /* FREECIV_JSON_CONNECTION */

{{

int readin;

if (!DIO_GET(uint16, &din, &field_addr, &readin)) {{

RECEIVE_PACKET_FIELD_ERROR({location.name});

}}

strvec_reserve(real_packet->{location}, readin);

}}

#ifdef FREECIV_JSON_CONNECTION

/* Delta address. */

{location.json_subloc}->name = "delta";

/* Enter array (start at initial element). */

{location.json_subloc}->sub_location = plocation_elem_new(0);

/* Enter diff array element (start at the index address). */

{location.json_subloc}->sub_location->sub_location = plocation_field_new("index");

#endif /* FREECIV_JSON_CONNECTION */

while (TRUE) {{

int {location.index};

char readin[MAX_LEN_PACKET];

/* Read next index */

{index_get}\

if ({location.index} == strvec_size(real_packet->{location})) {{

break;

}}

if ({location.index} > strvec_size(real_packet->{location})) {{

RECEIVE_PACKET_FIELD_ERROR({location.name},

": unexpected value %d "

"(> vector length) in array diff",

{location.index});

}}

#ifdef FREECIV_JSON_CONNECTION

/* Content address. */

{location.json_subloc}->sub_location->sub_location->name = "data";

#endif /* FREECIV_JSON_CONNECTION */

if (!DIO_GET({self.dataio_type}, &din, &field_addr, readin, sizeof(readin))

|| !strvec_set(real_packet->{location}, {location.index}, readin)) {{

RECEIVE_PACKET_FIELD_ERROR({location.name});

}}

#ifdef FREECIV_JSON_CONNECTION

/* Move to the next diff array element. */

{location.json_subloc}->sub_location->number++;

/* Back to the index address. */

{location.json_subloc}->sub_location->sub_location->name = "index";

#endif /* FREECIV_JSON_CONNECTION */

}}

#ifdef FREECIV_JSON_CONNECTION

/* Exit diff array element. */

FC_FREE({location.json_subloc}->sub_location->sub_location);

/* Exit array. */

FC_FREE({location.json_subloc}->sub_location);

/* Exit object. */

FC_FREE({location.json_subloc});

#endif /* FREECIV_JSON_CONNECTION */

if deep_diff:

return self._get_code_get_diff(location)

else:

return self._get_code_get_full(location)