diff options
Diffstat (limited to 'yt/python')
| -rw-r--r-- | yt/python/yt/yson/lexer.py | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/yt/python/yt/yson/lexer.py b/yt/python/yt/yson/lexer.py index a6b70cd41e2..e38bdf71974 100644 --- a/yt/python/yt/yson/lexer.py +++ b/yt/python/yt/yson/lexer.py @@ -255,14 +255,20 @@ class YsonLexer(object): raise_yson_error( "Premature end-of-stream while reading string literal in Yson", self.get_position_info()) - if ch == b'"' and not pending_next_char: - break - if self._output_buffer is None: - result.append(ch) + if pending_next_char: pending_next_char = False - elif ch == b"\\": - pending_next_char = True + if ch not in b"abfnrtvuUx01234567\\": + # invalid escape sequence support (pass to "unicode_escape") + result.pop() + else: + if ch == b'"': + break + if ch == b"\\": + pending_next_char = True + + if self._output_buffer is None: + result.append(ch) if self._output_buffer is None: return self._decode_string(self._unescape(b"".join(result))) |