SOL_API int
sol_json_token_get_uint64(const struct sol_json_token *token, uint64_t *value)
{
SOL_NULL_CHECK(token, -EINVAL);
SOL_NULL_CHECK(value, -EINVAL);
*value = 0;
if (token->start >= token->end) {
SOL_WRN("invalid token: start=%p, end=%p",
token->start, token->end);
return -EINVAL;
}
if (sol_json_token_get_type(token) != SOL_JSON_TYPE_NUMBER) {
SOL_WRN("expected number, got token type '%c' for token \"%.*s\"",
sol_json_token_get_type(token),
(int)sol_json_token_get_size(token), token->start);
return -EINVAL;
}
if (*token->start == '-') {
SOL_DBG("%.*s: negative number where unsigned is expected",
(int)sol_json_token_get_size(token), token->start);
return -ERANGE;
}
return token_get_uint64(token, value);
}
SOL_API int
sol_json_token_get_int64(const struct sol_json_token *token, int64_t *value)
{
SOL_NULL_CHECK(token, -EINVAL);
SOL_NULL_CHECK(value, -EINVAL);
*value = 0;
if (token->start >= token->end) {
SOL_WRN("invalid token: start=%p, end=%p",
token->start, token->end);
return -EINVAL;
}
if (sol_json_token_get_type(token) != SOL_JSON_TYPE_NUMBER) {
SOL_WRN("expected number, got token type '%c' for token \"%.*s\"",
sol_json_token_get_type(token),
sol_json_token_get_size(token), token->start);
return -EINVAL;
}
return token_get_int64(token, value);
}
SOL_API bool
sol_json_scanner_get_dict_pair(struct sol_json_scanner *scanner,
struct sol_json_token *key,
struct sol_json_token *value)
{
const char *start;
if (sol_json_mem_get_type(key->start) != SOL_JSON_TYPE_STRING) {
SOL_ERR("offset %zu: unexpected token '%c' (want string)",
sol_json_scanner_get_mem_offset(scanner, key->start),
key->start[0]);
errno = EINVAL;
return false;
}
if (!sol_json_scanner_next(scanner, value)) {
SOL_ERR("offset %zu: unexpected end of file (want pair separator)",
sol_json_scanner_get_mem_offset(scanner, scanner->current));
errno = EINVAL;
return false;
}
if (sol_json_token_get_type(value) != SOL_JSON_TYPE_PAIR_SEP) {
SOL_ERR("offset %zu: unexpected token '%c' (want pair separator)",
sol_json_scanner_get_mem_offset(scanner, value->start),
value->start[0]);
errno = EINVAL;
return false;
}
if (!sol_json_scanner_next(scanner, value)) {
SOL_ERR("offset %zu: unexpected end of file (want pair value)",
sol_json_scanner_get_mem_offset(scanner, scanner->current));
errno = EINVAL;
return false;
}
start = value->start;
if (!sol_json_scanner_skip(scanner, value)) {
SOL_ERR("offset %zu: unexpected end of file (want pair value to skip over)",
sol_json_scanner_get_mem_offset(scanner, scanner->current));
errno = EINVAL;
return false;
}
value->start = start;
return true;
}
SOL_API bool
sol_json_scanner_skip(struct sol_json_scanner *scanner,
struct sol_json_token *token)
{
int level = 0;
scanner->current = token->end;
do {
switch (sol_json_token_get_type(token)) {
case SOL_JSON_TYPE_UNKNOWN:
errno = EINVAL;
return false;
case SOL_JSON_TYPE_OBJECT_START:
case SOL_JSON_TYPE_ARRAY_START:
level++;
break;
case SOL_JSON_TYPE_OBJECT_END:
case SOL_JSON_TYPE_ARRAY_END:
level--;
if (SOL_UNLIKELY(level < 0)) {
errno = EINVAL;
return false;
}
break;
case SOL_JSON_TYPE_ELEMENT_SEP:
case SOL_JSON_TYPE_PAIR_SEP:
case SOL_JSON_TYPE_TRUE:
case SOL_JSON_TYPE_FALSE:
case SOL_JSON_TYPE_NULL:
case SOL_JSON_TYPE_STRING:
case SOL_JSON_TYPE_NUMBER:
break;
}
if (level > 0) {
if (!sol_json_scanner_next(scanner, token)) {
errno = EINVAL;
return false;
}
}
} while (level > 0);
return true;
}
