def _parse_string(source: Source, string_regex=BASIC_STRING, separator='"') -> str:
source.expect(separator)
res = []
while True:
if not source.consume_regex(string_regex):
raise DoesNotMatch('Invalid string starting from {text}'
.format(text=source._text[:100]))
res.append(source.last_consumed)
# start of some escape character
if not source.consume('\\'):
break
# do nothing if new line chars encountered
# corresponds to \
if source.consume_regex(NEWLINE_ESCAPE_CHARS_REGEX):
pass
# read unicode characters
elif source.consume_regex(SHORT_UNICODE_REGEX) or source.consume_regex(LONG_UNICODE_REGEX):
res.append(chr(int(source.last_consumed, 16)))
else:
# fail if no escape character follows
source.expect_regex(ESCAPE_CHARS_REGEX)
res.append(ESCAPES_MAPPING[source.last_consumed])
source.expect(separator)
return ''.join(res)
def _parse_table_name(source: Source) -> Tuple[str, ...]:
source.consume_regex(WHITESPACE_REGEX)
keys = [parse_keyword(source)]
source.consume_regex(WHITESPACE_REGEX)
while source.consume('.'):
source.consume_regex(WHITESPACE_REGEX)
key = parse_keyword(source)
keys.append(key)
source.consume_regex(WHITESPACE_REGEX)
return tuple(keys)
def _parse_inline_table(source: Source) -> InlineTable:
table = InlineTable()
source.expect('{')
if not source.consume('}'):
source.consume_regex(WHITESPACE_REGEX)
kv_entry = parse_kv_entry(source)
if source.last_consumed == '}':
raise InvalidTomlError('Cannot have nested inline tables.')
table[kv_entry.key] = kv_entry.val
while source.consume(','):
source.consume_regex(WHITESPACE_REGEX)
kv_entry = parse_kv_entry(source)
table[kv_entry.key] = kv_entry.val
source.consume_regex(WHITESPACE_REGEX)
source.expect('}')
return table