--- /dev/null
+import re
+
+from . import tags
+
+def _make_literal_serializer(expected_value, literal):
+ def serializer(to):
+ assert to.instance is expected_value
+ return literal
+
+ return serializer
+
+def _make_integer_serializer(lower_bound, upper_bound, suffix):
+ def _serializer(to):
+ assert lower_bound <= to.instance and to.instance < upper_bound
+ return '{}{}'.format(to.instance, suffix)
+
+ return _serializer
+
+def _make_unsigned_integer_serializer(bit_length):
+ return _make_integer_serializer(0, 2 << (bit_length - 1), 'u{}'.format(bit_length))
+
+def _make_signed_integer_serializer(bit_length):
+ upper_bound = 2 << (bit_length - 2)
+ lower_bound = -upper_bound
+ return _make_integer_serializer(lower_bound, upper_bound, 'i{}'.format(bit_length))
+
+_SERIALIZERS = {
+ tags.NULL: _make_literal_serializer(None, 'null'),
+ tags.TRUE: _make_literal_serializer(True, 'true'),
+ tags.FALSE: _make_literal_serializer(False, 'false'),
+ tags.UINT8: _make_unsigned_integer_serializer(8),
+ tags.UINT16: _make_unsigned_integer_serializer(16),
+ tags.UINT32: _make_unsigned_integer_serializer(32),
+ tags.UINT64: _make_unsigned_integer_serializer(64),
+ tags.INT8: _make_signed_integer_serializer(8),
+ tags.INT16: _make_signed_integer_serializer(16),
+ tags.INT32: _make_signed_integer_serializer(32),
+ tags.INT64: _make_signed_integer_serializer(64),
+}
+
+def serialize(to):
+ return _SERIALIZERS[to.tag](to)
+
+def _make_literal_deserializer(tag, instance, literal):
+ def _deserializer(s):
+ if s.startswith(literal):
+ return True, tags.TaggedObject(tag = tag, instance = instance), s[len(literal):]
+
+ return False, None, None
+
+ return _deserializer
+
+def _make_regex_deserializer(tag, decoder, regex):
+ matcher = re.compile(regex).match
+
+ def _deserializer(s):
+ match = matcher(s)
+
+ if match is None:
+ return False, None, None
+
+ return True, tags.TaggedObject(tag = tag, instance = decoder(match)), s[match.end():]
+
+ return _deserializer
+
+def _make_unsigned_int_deserializer(tag, bit_length):
+ bound = 2 << (bit_length - 1)
+
+ def _decoder(match):
+ result = int(match.group(1))
+ assert result < bound
+ return result
+
+ return _make_regex_deserializer(tag, _decoder, r'(\d+)' + 'u{}'.format(bit_length))
+
+def _make_signed_int_deserializer(tag, bit_length):
+ upper_bound = 2 << (bit_length - 2)
+ lower_bound = -upper_bound
+
+ def _decoder(match):
+ result = int(match.group(1))
+ assert lower_bound <= result and result < upper_bound
+ return result
+
+ return _make_regex_deserializer(tag, _decoder, r'(-?\d+)' + 'i{}'.format(bit_length))
+
+_DESERIALIZERS = [
+ _make_literal_deserializer(tags.NULL, None, 'null'),
+ _make_literal_deserializer(tags.TRUE, True, 'true'),
+ _make_literal_deserializer(tags.FALSE, False, 'false'),
+ _make_unsigned_int_deserializer(tags.UINT8, 8),
+ _make_unsigned_int_deserializer(tags.UINT16, 16),
+ _make_unsigned_int_deserializer(tags.UINT32, 32),
+ _make_unsigned_int_deserializer(tags.UINT64, 64),
+ _make_signed_int_deserializer(tags.INT8, 8),
+ _make_signed_int_deserializer(tags.INT16, 16),
+ _make_signed_int_deserializer(tags.INT32, 32),
+ _make_signed_int_deserializer(tags.INT64, 64),
+]
+
+def deserialize(s):
+ for deserializer in _DESERIALIZERS:
+ succeeded, result, remaining = deserializer(s)
+
+ if succeeded:
+ assert remaining == ''
+ return result
+
+ raise Exception()
--- /dev/null
+import unittest
+
+from serial import binary, tags, text
+
+EXAMPLE_BINARY_REPRESENTATIONS = [
+ (tags.TaggedObject(tags.NULL, None), b'\x00'),
+ (tags.TaggedObject(tags.TRUE, True), b'\x01'),
+ (tags.TaggedObject(tags.FALSE, False), b'\x02'),
+ (tags.TaggedObject(tags.UINT8, 7), b'\x03\x07'),
+ (tags.TaggedObject(tags.UINT16, 7), b'\x04\x00\x07'),
+ (tags.TaggedObject(tags.UINT32, 7), b'\x05\x00\x00\x00\x07'),
+ (tags.TaggedObject(tags.UINT64, 7), b'\x06\x00\x00\x00\x00\x00\x00\x00\x07'),
+ (tags.TaggedObject(tags.INT8, 7), b'\x10\x07'),
+ (tags.TaggedObject(tags.INT16, 7), b'\x11\x00\x07'),
+ (tags.TaggedObject(tags.INT32, 7), b'\x12\x00\x00\x00\x07'),
+ (tags.TaggedObject(tags.INT64, 7), b'\x13\x00\x00\x00\x00\x00\x00\x00\x07'),
+ (tags.TaggedObject(tags.UINT8, 254), b'\x03\xfe'),
+ (tags.TaggedObject(tags.UINT16, 65534), b'\x04\xff\xfe'),
+ (tags.TaggedObject(tags.UINT32, 4294967294), b'\x05\xff\xff\xff\xfe'),
+ (tags.TaggedObject(tags.UINT64, 18446744073709551614), b'\x06\xff\xff\xff\xff\xff\xff\xff\xfe'),
+ (tags.TaggedObject(tags.INT8, -2), b'\x10\xfe'),
+ (tags.TaggedObject(tags.INT16, -2), b'\x11\xff\xfe'),
+ (tags.TaggedObject(tags.INT32, -2), b'\x12\xff\xff\xff\xfe'),
+ (tags.TaggedObject(tags.INT64, -2), b'\x13\xff\xff\xff\xff\xff\xff\xff\xfe'),
+ (tags.TaggedObject(tags.BINARY, b'\xde\xad\xbe\xef'), b'\x20\x00\x00\x00\x04\xde\xad\xbe\xef'),
+ (tags.TaggedObject(tags.UTF8, 'Lol!'), b'\x21\x00\x00\x00\x04Lol!'),
+ (tags.TaggedObject(tags.UTF16, 'かわ'), b'\x22\x00\x00\x00\x06\xff\xfeK0\x8f0'),
+ (tags.TaggedObject(tags.UTF32, '漢'), b'\x23\x00\x00\x00\x08\xff\xfe\x00\x00"o\x00\x00'),
+ (
+ tags.TaggedObject(
+ tags.TUPLE,
+ (
+ tags.TaggedObject(
+ tags.TRUE,
+ True,
+ ),
+ tags.TaggedObject(
+ tags.UINT8,
+ 7,
+ ),
+ ),
+ ),
+ b'\x30\x00\x00\x00\x03\x01\x03\x07'
+ ),
+]
+
+class BinarySerializeTests(unittest.TestCase):
+ def test_serialize(self):
+ for tagged_object, expected in EXAMPLE_BINARY_REPRESENTATIONS:
+ actual = binary.serialize(tagged_object)
+ self.assertEqual(expected, actual)
+
+class BinaryDeserializeTests(unittest.TestCase):
+ def test_deserialize(self):
+ for expected, representation in EXAMPLE_BINARY_REPRESENTATIONS:
+ actual = binary.deserialize(representation)
+ self.assertEqual(expected, actual)
+
+EXAMPLE_TEXT_REPRESENTATIONS = [
+ (tags.TaggedObject(tags.NULL, None), 'null'),
+ (tags.TaggedObject(tags.TRUE, True), 'true'),
+ (tags.TaggedObject(tags.FALSE, False), 'false'),
+ (tags.TaggedObject(tags.UINT8, 42), '42u8'),
+ (tags.TaggedObject(tags.UINT16, 42), '42u16'),
+ (tags.TaggedObject(tags.UINT32, 42), '42u32'),
+ (tags.TaggedObject(tags.UINT64, 42), '42u64'),
+ (tags.TaggedObject(tags.INT8, 42), '42i8'),
+ (tags.TaggedObject(tags.INT16, 42), '42i16'),
+ (tags.TaggedObject(tags.INT32, 42), '42i32'),
+ (tags.TaggedObject(tags.INT64, 42), '42i64'),
+ (tags.TaggedObject(tags.INT8, -2), '-2i8'),
+ (tags.TaggedObject(tags.INT16, -2), '-2i16'),
+ (tags.TaggedObject(tags.INT32, -2), '-2i32'),
+ (tags.TaggedObject(tags.INT64, -2), '-2i64'),
+]
+
+class TextSerializeTests(unittest.TestCase):
+ def test_serialize(self):
+ for tagged_object, expected in EXAMPLE_TEXT_REPRESENTATIONS:
+ actual = text.serialize(tagged_object)
+ self.assertEqual(expected, actual)
+
+class TextDeserializeTests(unittest.TestCase):
+ def test_deserialize(self):
+ for expected, representation in EXAMPLE_TEXT_REPRESENTATIONS:
+ actual = text.deserialize(representation)
+ self.assertEqual(expected, actual)
+
+unittest.main()
+++ /dev/null
-import unittest
-
-from serial import binary, tags
-
-EXAMPLE_REPRESENTATIONS = [
- (tags.TaggedObject(tags.NULL, None), b'\x00'),
- (tags.TaggedObject(tags.TRUE, True), b'\x01'),
- (tags.TaggedObject(tags.FALSE, False), b'\x02'),
- (tags.TaggedObject(tags.UINT8, 7), b'\x03\x07'),
- (tags.TaggedObject(tags.UINT16, 7), b'\x04\x00\x07'),
- (tags.TaggedObject(tags.UINT32, 7), b'\x05\x00\x00\x00\x07'),
- (tags.TaggedObject(tags.UINT64, 7), b'\x06\x00\x00\x00\x00\x00\x00\x00\x07'),
- (tags.TaggedObject(tags.INT8, 7), b'\x10\x07'),
- (tags.TaggedObject(tags.INT16, 7), b'\x11\x00\x07'),
- (tags.TaggedObject(tags.INT32, 7), b'\x12\x00\x00\x00\x07'),
- (tags.TaggedObject(tags.INT64, 7), b'\x13\x00\x00\x00\x00\x00\x00\x00\x07'),
- (tags.TaggedObject(tags.UINT8, 254), b'\x03\xfe'),
- (tags.TaggedObject(tags.UINT16, 65534), b'\x04\xff\xfe'),
- (tags.TaggedObject(tags.UINT32, 4294967294), b'\x05\xff\xff\xff\xfe'),
- (tags.TaggedObject(tags.UINT64, 18446744073709551614), b'\x06\xff\xff\xff\xff\xff\xff\xff\xfe'),
- (tags.TaggedObject(tags.INT8, -2), b'\x10\xfe'),
- (tags.TaggedObject(tags.INT16, -2), b'\x11\xff\xfe'),
- (tags.TaggedObject(tags.INT32, -2), b'\x12\xff\xff\xff\xfe'),
- (tags.TaggedObject(tags.INT64, -2), b'\x13\xff\xff\xff\xff\xff\xff\xff\xfe'),
- (tags.TaggedObject(tags.BINARY, b'\xde\xad\xbe\xef'), b'\x20\x00\x00\x00\x04\xde\xad\xbe\xef'),
- (tags.TaggedObject(tags.UTF8, 'Lol!'), b'\x21\x00\x00\x00\x04Lol!'),
- (tags.TaggedObject(tags.UTF16, 'かわ'), b'\x22\x00\x00\x00\x06\xff\xfeK0\x8f0'),
- (tags.TaggedObject(tags.UTF32, '漢'), b'\x23\x00\x00\x00\x08\xff\xfe\x00\x00"o\x00\x00'),
- (
- tags.TaggedObject(
- tags.TUPLE,
- (
- tags.TaggedObject(
- tags.TRUE,
- True,
- ),
- tags.TaggedObject(
- tags.UINT8,
- 7,
- ),
- ),
- ),
- b'\x30\x00\x00\x00\x03\x01\x03\x07'
- ),
-]
-
-class SerializeTests(unittest.TestCase):
- def test_serialize(self):
- for tagged_object, expected in EXAMPLE_REPRESENTATIONS:
- actual = binary.serialize(tagged_object)
- self.assertEqual(expected, actual)
-
-class DeserializeTests(unittest.TestCase):
- def test_deserialize(self):
- for expected, representation in EXAMPLE_REPRESENTATIONS:
- actual = binary.deserialize(representation)
- self.assertEqual(expected, actual)
-
-unittest.main()