def test_simple(self):
b = parse('(0/1)')
assert isinstance(b, Node), type(b)
assert len(b) == 1, len(b)
assert isinstance(b[0], BitString), type(b[0])
assert len(b[0]) == 1, len(b[0])
assert b[0].zero()
b = parse('(0/1, 1/1)')
assert isinstance(b, Node), type(b)
assert len(b) == 2, len(b)
assert isinstance(b[1], BitString), type(b[1])
assert len(b[1]) == 1, len(b[1])
assert not b[1].zero()
b = parse('(a=0/1)')
assert isinstance(b, Node), type(b)
assert len(b) == 1, len(b)
assert isinstance(b.a[0], BitString), type(b.a[0])
assert len(b.a[0]) == 1, len(b.a[0])
assert b.a[0].zero()
b = parse('(a=(0/1))')
assert isinstance(b, Node), type(b)
assert len(b) == 1, len(b)
assert isinstance(b.a[0], Node), type(b.a[0])
assert len(b.a[0]) == 1, len(b.a[0])
assert isinstance(b.a[0][0], BitString), type(b.a[0][0])
assert len(b.a[0][0]) == 1, len(b.a[0][0])
assert b.a[0][0].zero()
b = parse('(0)')
assert isinstance(b, Node), type(b)
assert len(b) == 1, len(b)
assert isinstance(b[0], BitString), type(b[0])
assert len(b[0]) == 32, len(b[0])
assert b[0].zero()
def test_simple(self):
b = parse('(0/1)')
assert isinstance(b, Node), type(b)
assert len(b) == 1, len(b)
assert isinstance(b[0], BitString), type(b[0])
assert len(b[0]) == 1, len(b[0])
assert b[0].zero()
b = parse('(0/1, 1/1)')
assert isinstance(b, Node), type(b)
assert len(b) == 2, len(b)
assert isinstance(b[1], BitString), type(b[1])
assert len(b[1]) == 1, len(b[1])
assert not b[1].zero()
b = parse('(a=0/1)')
assert isinstance(b, Node), type(b)
assert len(b) == 1, len(b)
assert isinstance(b.a[0], BitString), type(b.a[0])
assert len(b.a[0]) == 1, len(b.a[0])
assert b.a[0].zero()
b = parse('(a=(0/1))')
assert isinstance(b, Node), type(b)
assert len(b) == 1, len(b)
assert isinstance(b.a[0], Node), type(b.a[0])
assert len(b.a[0]) == 1, len(b.a[0])
assert isinstance(b.a[0][0], BitString), type(b.a[0][0])
assert len(b.a[0][0]) == 1, len(b.a[0][0])
assert b.a[0][0].zero()
b = parse('(0)')
assert isinstance(b, Node), type(b)
assert len(b) == 1, len(b)
assert isinstance(b[0], BitString), type(b[0])
assert len(b[0]) == 32, len(b[0])
assert b[0].zero()
def test_single(self):
b = parse('''(123/8, foo=0x123/2.0,\nbar=1111100010001000b0)''')
self.bassert(b[0], '0x7b')
self.bassert(b[1], '0x123', 16)
self.bassert(b.foo[0], '0x123', 16)
self.bassert(b[2], '1111100010001000b0')
self.bassert(b.bar[0], '1111100010001000b0')
def test_single(self):
b = parse('''(123/8, foo=0x123/2.0,\nbar=1111100010001000b0)''')
self.bassert(b[0], '0x7b')
self.bassert(b[1], '0x123', 16)
self.bassert(b.foo[0], '0x123', 16)
self.bassert(b[2], '1111100010001000b0')
self.bassert(b.bar[0], '1111100010001000b0')
def test_parse(self):
'''
An 803.3 MAC frame - see http://en.wikipedia.org/wiki/Ethernet
'''
_b = parse('''
Frame(
Header(
preamble = 0b10101010*7,
start = 0b10101011,
destn = 123456x0,
source = 890abcx0,
ethertype = 0800x0
),
Data(1/8,2/8,3/8,4/8),
CRC(234d0/4.)
)
''')
def test_parse(self):
'''
An 803.3 MAC frame - see http://en.wikipedia.org/wiki/Ethernet
'''
_b = parse('''
Frame(
Header(
preamble = 0b10101010*7,
start = 0b10101011,
destn = 123456x0,
source = 890abcx0,
ethertype = 0800x0
),
Data(1/8,2/8,3/8,4/8),
CRC(234d0/4.)
)
''')
def test_encode(self):
mac = parse('''
Frame(
Header(
preamble = 0b10101010*7,
start = 0b10101011,
destn = 010203040506x0,
source = 0708090a0b0cx0,
ethertype = 0800x0
),
Data(1/8,2/8,3/8,4/8),
CRC(234d0/4.)
)
''')
serial = simple_serialiser(mac, dispatch_table())
bs = serial.bytes()
for _index in range(7):
b = next(bs)
assert b == BitString.from_int('0b10101010').to_int(), b
b = next(bs)
assert b == BitString.from_int('0b10101011').to_int(), b
def test_match(self):
#basicConfig(level=DEBUG)
# first, define some test data - we'll use a simple definition
# language, but you could also construct this directly in Python
# (Frame, Header etc are auto-generated subclasses of Node).
mac = parse('''
Frame(
Header(
preamble = 0b10101010*7,
start = 0b10101011,
destn = 010203040506x0,
source = 0708090a0b0cx0,
ethertype = 0800x0
),
Data(1/8,2/8,3/8,4/8),
CRC(234d0/4.)
)
''')
# next, define a parser for the header structure
# this is mainly literal values, but we make the two addresses
# big-endian integers, which will be read from the data
# this looks very like "normal" lepl because it is - there's
# nothing in lepl that forces the data being parsed to be text.
preamble = ~Const('0b10101010')[7]
start = ~Const('0b10101011')
destn = BEnd(6.0) > 'destn'
source = BEnd(6.0) > 'source'
ethertype = ~Const('0800x0')
header = preamble & start & destn & source & ethertype > Node
# so, what do the test data look like?
# print(mac)
# Frame
# +- Header
# | +- preamble BitString(b'\xaa\xaa\xaa\xaa\xaa\xaa\xaa', 56, 0)
# | +- start BitString(b'\xab', 8, 0)
# | +- destn BitString(b'\x01\x02\x03\x04\x05\x06', 48, 0)
# | +- source BitString(b'\x07\x08\t\n\x0b\x0c', 48, 0)
# | `- ethertype BitString(b'\x08\x00', 16, 0)
# +- Data
# | +- BitString(b'\x01', 8, 0)
# | +- BitString(b'\x02', 8, 0)
# | +- BitString(b'\x03', 8, 0)
# | `- BitString(b'\x04', 8, 0)
# `- CRC
# `- BitString(b'\x00\x00\x00\xea', 32, 0)
# we can serialize that to a BitString
b = simple_serialiser(mac, dispatch_table())
assert str(b) == 'aaaaaaaaaaaaaaab123456789abc801234000eax0/240'
# and then we can parse it
header.config.no_full_first_match()
p = header.parse(b)[0]
# print(p)
# Node
# +- destn Int(1108152157446,48)
# `- source Int(7731092785932,48)
# the destination address
assert hex(p.destn[0]) == '0x10203040506'
# the source address
assert hex(p.source[0]) == '0x708090a0b0c'
def test_repeat(self):
b = parse('(1*3)')
self.bassert(b[0], '010000000100000001000000x0')
b = parse('(a=0x1234 * 3)')
self.bassert(b.a[0], '341234123412x0')
def test_named(self):
#basicConfig(level=DEBUG)
b = parse('A(B(1), B(2))')
self.bassert(b.B[0][0], 1)
self.bassert(b.B[1][0], 2)
def test_nested(self):
b = parse('(123, (foo=123x0/2.))')
self.bassert(b[0], 123)
assert isinstance(b[1], Node), str(b)
self.bassert(b[1].foo[0], 0x2301, 16)
def test_nested(self):
b = parse('(123, (foo=123x0/2.))')
self.bassert(b[0], 123)
assert isinstance(b[1], Node), str(b)
self.bassert(b[1].foo[0], 0x2301, 16)
def test_repeat(self):
b = parse('(1*3)')
self.bassert(b[0], '010000000100000001000000x0')
b = parse('(a=0x1234 * 3)')
self.bassert(b.a[0], '341234123412x0')
def test_named(self):
#basicConfig(level=DEBUG)
b = parse('A(B(1), B(2))')
self.bassert(b.B[0][0], 1)
self.bassert(b.B[1][0], 2)
def test_match(self):
#basicConfig(level=DEBUG)
# first, define some test data - we'll use a simple definition
# language, but you could also construct this directly in Python
# (Frame, Header etc are auto-generated subclasses of Node).
mac = parse('''
Frame(
Header(
preamble = 0b10101010*7,
start = 0b10101011,
destn = 010203040506x0,
source = 0708090a0b0cx0,
ethertype = 0800x0
),
Data(1/8,2/8,3/8,4/8),
CRC(234d0/4.)
)
''')
# next, define a parser for the header structure
# this is mainly literal values, but we make the two addresses
# big-endian integers, which will be read from the data
# this looks very like "normal" lepl because it is - there's
# nothing in lepl that forces the data being parsed to be text.
preamble = ~Const('0b10101010')[7]
start = ~Const('0b10101011')
destn = BEnd(6.0) > 'destn'
source = BEnd(6.0) > 'source'
ethertype = ~Const('0800x0')
header = preamble & start & destn & source & ethertype > Node
# so, what do the test data look like?
# print(mac)
# Frame
# +- Header
# | +- preamble BitString(b'\xaa\xaa\xaa\xaa\xaa\xaa\xaa', 56, 0)
# | +- start BitString(b'\xab', 8, 0)
# | +- destn BitString(b'\x01\x02\x03\x04\x05\x06', 48, 0)
# | +- source BitString(b'\x07\x08\t\n\x0b\x0c', 48, 0)
# | `- ethertype BitString(b'\x08\x00', 16, 0)
# +- Data
# | +- BitString(b'\x01', 8, 0)
# | +- BitString(b'\x02', 8, 0)
# | +- BitString(b'\x03', 8, 0)
# | `- BitString(b'\x04', 8, 0)
# `- CRC
# `- BitString(b'\x00\x00\x00\xea', 32, 0)
# we can serialize that to a BitString
b = simple_serialiser(mac, dispatch_table())
assert str(b) == 'aaaaaaaaaaaaaaab123456789abc801234000eax0/240'
# and then we can parse it
header.config.no_full_first_match()
p = header.parse(b)[0]
# print(p)
# Node
# +- destn Int(1108152157446,48)
# `- source Int(7731092785932,48)
# the destination address
assert hex(p.destn[0]) == '0x10203040506'
# the source address
assert hex(p.source[0]) == '0x708090a0b0c'