return _STRING_SERIALIZERS[o.tag](o.value)
+def _make_constant_parser(constant, value):
+ def parser(s):
+ if s.startswith(constant):
+ result = _shared.ParseResult(
+ success = True,
+ value = value,
+ remaining = s[len(constant):],
+ )
+ return result
+
+ return _shared._FAILED_PARSE_RESULT
+
+ return parser
+
+_PARSERS = [
+ _make_constant_parser('null', None),
+ _make_constant_parser('true', True),
+ _make_constant_parser('false', False),
+]
+
+def _object_parser(source):
+ for parser in _PARSERS:
+ result = parser(source)
+
+ if result.success:
+ return result
+
+ return _shared._FAILED_PARSE_RESULT
+
+def _parse(parser, source):
+ result = parser(source)
+
+ if result.success and result.remaining.strip() == '':
+ return result.value
+
+ raise Exception('Unparsed trailing characters: "{}"'.format(result.remaining))
+
def deserialize(s):
- pass
+ return _parse(_object_parser, s)