1822 lines
67 KiB
Python
1822 lines
67 KiB
Python
# amaranth: UnusedPrint=no, UnusedProperty=no
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import warnings
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from enum import Enum, EnumMeta
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from amaranth.hdl._ast import *
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from amaranth.lib.enum import Enum as AmaranthEnum
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from .utils import *
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from amaranth._utils import _ignore_deprecated
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class UnsignedEnum(Enum):
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FOO = 1
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BAR = 2
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BAZ = 3
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class SignedEnum(Enum):
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FOO = -1
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BAR = 0
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BAZ = +1
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class StringEnum(Enum):
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FOO = "a"
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BAR = "b"
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class TypedEnum(int, Enum):
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FOO = 1
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BAR = 2
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BAZ = 3
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class ShapeTestCase(FHDLTestCase):
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def test_make(self):
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s1 = Shape()
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self.assertEqual(s1.width, 1)
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self.assertEqual(s1.signed, False)
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s2 = Shape(signed=True)
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self.assertEqual(s2.width, 1)
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self.assertEqual(s2.signed, True)
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s3 = Shape(3, True)
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self.assertEqual(s3.width, 3)
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self.assertEqual(s3.signed, True)
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s4 = Shape(0)
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self.assertEqual(s4.width, 0)
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self.assertEqual(s4.signed, False)
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def test_make_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^Width must be an integer, not 'a'$"):
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Shape("a")
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with self.assertRaisesRegex(TypeError,
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r"^Width of an unsigned value must be zero or a positive integer, not -1$"):
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Shape(-1, signed=False)
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with self.assertRaisesRegex(TypeError,
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r"^Width of a signed value must be a positive integer, not 0$"):
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Shape(0, signed=True)
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def test_compare_non_shape(self):
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self.assertNotEqual(Shape(1, True), "hi")
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def test_repr(self):
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self.assertEqual(repr(Shape()), "unsigned(1)")
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self.assertEqual(repr(Shape(2, True)), "signed(2)")
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def test_convert_tuple_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^cannot unpack non-iterable Shape object$"):
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width, signed = Shape()
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def test_unsigned(self):
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s1 = unsigned(2)
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self.assertIsInstance(s1, Shape)
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self.assertEqual(s1.width, 2)
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self.assertEqual(s1.signed, False)
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def test_signed(self):
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s1 = signed(2)
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self.assertIsInstance(s1, Shape)
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self.assertEqual(s1.width, 2)
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self.assertEqual(s1.signed, True)
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def test_cast_shape(self):
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s1 = Shape.cast(unsigned(1))
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self.assertEqual(s1.width, 1)
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self.assertEqual(s1.signed, False)
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s2 = Shape.cast(signed(3))
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self.assertEqual(s2.width, 3)
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self.assertEqual(s2.signed, True)
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def test_cast_int(self):
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s1 = Shape.cast(2)
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self.assertEqual(s1.width, 2)
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self.assertEqual(s1.signed, False)
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def test_cast_int_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^Width of an unsigned value must be zero or a positive integer, not -1$"):
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Shape.cast(-1)
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def test_cast_tuple_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^Object \(1, True\) cannot be converted to an Amaranth shape$"):
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Shape.cast((1, True))
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def test_cast_range(self):
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s1 = Shape.cast(range(0, 8))
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self.assertEqual(s1.width, 3)
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self.assertEqual(s1.signed, False)
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s2 = Shape.cast(range(0, 9))
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self.assertEqual(s2.width, 4)
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self.assertEqual(s2.signed, False)
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s3 = Shape.cast(range(-7, 8))
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self.assertEqual(s3.width, 4)
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self.assertEqual(s3.signed, True)
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s4 = Shape.cast(range(0, 1))
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self.assertEqual(s4.width, 0)
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self.assertEqual(s4.signed, False)
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s5 = Shape.cast(range(-1, 0))
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self.assertEqual(s5.width, 1)
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self.assertEqual(s5.signed, True)
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s6 = Shape.cast(range(0, 0))
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self.assertEqual(s6.width, 0)
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self.assertEqual(s6.signed, False)
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s7 = Shape.cast(range(-1, -1))
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self.assertEqual(s7.width, 0)
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self.assertEqual(s7.signed, False)
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s8 = Shape.cast(range(0, 10, 3))
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self.assertEqual(s8.width, 4)
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self.assertEqual(s8.signed, False)
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s9 = Shape.cast(range(0, 3, 3))
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self.assertEqual(s9.width, 0)
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self.assertEqual(s9.signed, False)
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def test_cast_enum(self):
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s1 = Shape.cast(UnsignedEnum)
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self.assertEqual(s1.width, 2)
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self.assertEqual(s1.signed, False)
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s2 = Shape.cast(SignedEnum)
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self.assertEqual(s2.width, 2)
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self.assertEqual(s2.signed, True)
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def test_cast_enum_bad(self):
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with self.assertRaisesRegex(TypeError,
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r"^Only enumerations whose members have constant-castable values can be used "
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r"in Amaranth code$"):
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Shape.cast(StringEnum)
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def test_cast_bad(self):
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with self.assertRaisesRegex(TypeError,
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r"^Object 'foo' cannot be converted to an Amaranth shape$"):
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Shape.cast("foo")
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def test_hashable(self):
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d = {
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signed(2): "a",
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unsigned(3): "b",
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unsigned(2): "c",
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}
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self.assertEqual(d[signed(2)], "a")
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self.assertEqual(d[unsigned(3)], "b")
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self.assertEqual(d[unsigned(2)], "c")
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class MockShapeCastable(ShapeCastable):
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def __init__(self, dest):
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self.dest = dest
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def as_shape(self):
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return self.dest
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def __call__(self, value):
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return value
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def const(self, init):
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return Const(init, self.dest)
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def from_bits(self, bits):
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return bits
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class ShapeCastableTestCase(FHDLTestCase):
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def test_no_override(self):
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with self.assertRaisesRegex(TypeError,
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r"^Class 'MockShapeCastableNoOverride' deriving from 'ShapeCastable' must "
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r"override the 'as_shape' method$"):
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class MockShapeCastableNoOverride(ShapeCastable):
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def __init__(self):
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pass
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def test_cast(self):
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sc = MockShapeCastable(unsigned(2))
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self.assertEqual(Shape.cast(sc), unsigned(2))
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def test_recurse_bad(self):
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sc = MockShapeCastable(None)
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sc.dest = sc
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with self.assertRaisesRegex(RecursionError,
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r"^Shape-castable object <.+> casts to itself$"):
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Shape.cast(sc)
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def test_recurse(self):
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sc = MockShapeCastable(MockShapeCastable(unsigned(1)))
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self.assertEqual(Shape.cast(sc), unsigned(1))
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def test_abstract(self):
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with self.assertRaisesRegex(TypeError,
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r"^Can't instantiate abstract class ShapeCastable$"):
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ShapeCastable()
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def test_no_from_bits(self):
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with self.assertWarnsRegex(DeprecationWarning,
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r"^Class 'MockShapeCastableNoFromBits' deriving from 'ShapeCastable' does "
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r"not override the 'from_bits' method, which will be required in Amaranth 0.6$"):
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class MockShapeCastableNoFromBits(ShapeCastable):
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def __init__(self, dest):
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self.dest = dest
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def as_shape(self):
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return self.dest
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def __call__(self, value):
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return value
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def const(self, init):
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return Const(init, self.dest)
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self.assertEqual(MockShapeCastableNoFromBits(unsigned(2)).from_bits(123), 123)
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class ShapeLikeTestCase(FHDLTestCase):
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def test_construct(self):
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with self.assertRaises(TypeError):
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ShapeLike()
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def test_subclass(self):
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self.assertTrue(issubclass(Shape, ShapeLike))
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self.assertTrue(issubclass(MockShapeCastable, ShapeLike))
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self.assertTrue(issubclass(int, ShapeLike))
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self.assertTrue(issubclass(range, ShapeLike))
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self.assertTrue(issubclass(EnumMeta, ShapeLike))
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self.assertFalse(issubclass(Enum, ShapeLike))
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self.assertFalse(issubclass(str, ShapeLike))
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self.assertTrue(issubclass(ShapeLike, ShapeLike))
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def test_isinstance(self):
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self.assertTrue(isinstance(unsigned(2), ShapeLike))
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self.assertTrue(isinstance(MockShapeCastable(unsigned(2)), ShapeLike))
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self.assertTrue(isinstance(2, ShapeLike))
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self.assertTrue(isinstance(0, ShapeLike))
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self.assertFalse(isinstance(-1, ShapeLike))
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self.assertTrue(isinstance(range(10), ShapeLike))
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self.assertFalse(isinstance("abc", ShapeLike))
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def test_isinstance_enum(self):
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class EnumA(Enum):
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A = 1
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B = 2
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class EnumB(Enum):
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A = "a"
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B = "b"
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class EnumC(Enum):
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A = Cat(Const(1, 2), Const(0, 2))
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self.assertTrue(isinstance(EnumA, ShapeLike))
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self.assertFalse(isinstance(EnumB, ShapeLike))
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self.assertTrue(isinstance(EnumC, ShapeLike))
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class ValueTestCase(FHDLTestCase):
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def test_cast(self):
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self.assertIsInstance(Value.cast(0), Const)
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self.assertIsInstance(Value.cast(True), Const)
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c = Const(0)
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self.assertIs(Value.cast(c), c)
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with self.assertRaisesRegex(TypeError,
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r"^Object 'str' cannot be converted to an Amaranth value$"):
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Value.cast("str")
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def test_cast_enum(self):
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e1 = Value.cast(UnsignedEnum.FOO)
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self.assertIsInstance(e1, Const)
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self.assertEqual(e1.shape(), unsigned(2))
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e2 = Value.cast(SignedEnum.FOO)
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self.assertIsInstance(e2, Const)
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self.assertEqual(e2.shape(), signed(2))
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def test_cast_typedenum(self):
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e1 = Value.cast(TypedEnum.FOO)
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self.assertIsInstance(e1, Const)
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self.assertEqual(e1.shape(), unsigned(2))
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def test_cast_enum_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^Only enumerations whose members have constant-castable values can be used "
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r"in Amaranth code$"):
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Value.cast(StringEnum.FOO)
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def test_bool(self):
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with self.assertRaisesRegex(TypeError,
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r"^Attempted to convert Amaranth value to Python boolean$"):
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if Const(0):
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pass
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def test_len(self):
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self.assertEqual(len(Const(10)), 4)
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def test_getitem_int(self):
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s1 = Const(10)[0]
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self.assertIsInstance(s1, Slice)
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self.assertEqual(s1.start, 0)
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self.assertEqual(s1.stop, 1)
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s2 = Const(10)[-1]
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self.assertIsInstance(s2, Slice)
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self.assertEqual(s2.start, 3)
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self.assertEqual(s2.stop, 4)
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with self.assertRaisesRegex(IndexError,
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r"^Index 5 is out of bounds for a 4-bit value$"):
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Const(10)[5]
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def test_getitem_slice(self):
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s1 = Const(10)[1:3]
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self.assertIsInstance(s1, Slice)
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self.assertEqual(s1.start, 1)
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self.assertEqual(s1.stop, 3)
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s2 = Const(10)[1:-2]
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self.assertIsInstance(s2, Slice)
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self.assertEqual(s2.start, 1)
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self.assertEqual(s2.stop, 2)
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s3 = Const(31)[::2]
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self.assertIsInstance(s3, Concat)
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self.assertIsInstance(s3.parts[0], Slice)
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self.assertEqual(s3.parts[0].start, 0)
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self.assertEqual(s3.parts[0].stop, 1)
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self.assertIsInstance(s3.parts[1], Slice)
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self.assertEqual(s3.parts[1].start, 2)
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self.assertEqual(s3.parts[1].stop, 3)
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self.assertIsInstance(s3.parts[2], Slice)
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self.assertEqual(s3.parts[2].start, 4)
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self.assertEqual(s3.parts[2].stop, 5)
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def test_getitem_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^Cannot index value with 'str'$"):
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Const(31)["str"]
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with self.assertRaisesRegex(TypeError,
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r"^Cannot index value with a value; use Value.bit_select\(\) instead$"):
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Const(31)[Signal(3)]
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s = Signal(3)
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with self.assertRaisesRegex(TypeError,
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r"^Cannot slice value with a value; use Value.bit_select\(\) or Value.word_select\(\) instead$"):
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Const(31)[s:s+3]
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def test_shift_left(self):
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self.assertRepr(Const(256, unsigned(9)).shift_left(0),
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"(cat (const 0'd0) (const 9'd256))")
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self.assertRepr(Const(256, unsigned(9)).shift_left(1),
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"(cat (const 1'd0) (const 9'd256))")
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self.assertRepr(Const(256, unsigned(9)).shift_left(5),
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"(cat (const 5'd0) (const 9'd256))")
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self.assertRepr(Const(256, signed(9)).shift_left(1),
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"(s (cat (const 1'd0) (const 9'sd-256)))")
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self.assertRepr(Const(256, signed(9)).shift_left(5),
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"(s (cat (const 5'd0) (const 9'sd-256)))")
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self.assertRepr(Const(256, unsigned(9)).shift_left(-1),
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"(slice (const 9'd256) 1:9)")
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self.assertRepr(Const(256, unsigned(9)).shift_left(-5),
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"(slice (const 9'd256) 5:9)")
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self.assertRepr(Const(256, signed(9)).shift_left(-1),
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"(s (slice (const 9'sd-256) 1:9))")
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self.assertRepr(Const(256, signed(9)).shift_left(-5),
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"(s (slice (const 9'sd-256) 5:9))")
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self.assertRepr(Const(256, signed(9)).shift_left(-15),
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"(s (slice (const 9'sd-256) 8:9))")
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def test_shift_left_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^Shift amount must be an integer, not 'str'$"):
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Const(31).shift_left("str")
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def test_shift_right(self):
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self.assertRepr(Const(256, unsigned(9)).shift_right(0),
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"(slice (const 9'd256) 0:9)")
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self.assertRepr(Const(256, unsigned(9)).shift_right(-1),
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"(cat (const 1'd0) (const 9'd256))")
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self.assertRepr(Const(256, unsigned(9)).shift_right(-5),
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"(cat (const 5'd0) (const 9'd256))")
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self.assertRepr(Const(256, signed(9)).shift_right(-1),
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"(s (cat (const 1'd0) (const 9'sd-256)))")
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self.assertRepr(Const(256, signed(9)).shift_right(-5),
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"(s (cat (const 5'd0) (const 9'sd-256)))")
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self.assertRepr(Const(256, unsigned(9)).shift_right(1),
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"(slice (const 9'd256) 1:9)")
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self.assertRepr(Const(256, unsigned(9)).shift_right(5),
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"(slice (const 9'd256) 5:9)")
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self.assertRepr(Const(256, unsigned(9)).shift_right(15),
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"(slice (const 9'd256) 9:9)")
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self.assertRepr(Const(256, signed(9)).shift_right(1),
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"(s (slice (const 9'sd-256) 1:9))")
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self.assertRepr(Const(256, signed(9)).shift_right(5),
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"(s (slice (const 9'sd-256) 5:9))")
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self.assertRepr(Const(256, signed(9)).shift_right(7),
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"(s (slice (const 9'sd-256) 7:9))")
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self.assertRepr(Const(256, signed(9)).shift_right(8),
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"(s (slice (const 9'sd-256) 8:9))")
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self.assertRepr(Const(256, signed(9)).shift_right(9),
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"(s (slice (const 9'sd-256) 8:9))")
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self.assertRepr(Const(256, signed(9)).shift_right(15),
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"(s (slice (const 9'sd-256) 8:9))")
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def test_shift_right_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^Shift amount must be an integer, not 'str'$"):
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Const(31).shift_left("str")
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def test_rotate_left(self):
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self.assertRepr(Const(256).rotate_left(1),
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"(cat (slice (const 9'd256) 8:9) (slice (const 9'd256) 0:8))")
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self.assertRepr(Const(256).rotate_left(7),
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"(cat (slice (const 9'd256) 2:9) (slice (const 9'd256) 0:2))")
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self.assertRepr(Const(256).rotate_left(-1),
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"(cat (slice (const 9'd256) 1:9) (slice (const 9'd256) 0:1))")
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self.assertRepr(Const(256).rotate_left(-7),
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"(cat (slice (const 9'd256) 7:9) (slice (const 9'd256) 0:7))")
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self.assertRepr(Const(0, 0).rotate_left(3),
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"(cat (slice (const 0'd0) 0:0) (slice (const 0'd0) 0:0))")
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self.assertRepr(Const(0, 0).rotate_left(-3),
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"(cat (slice (const 0'd0) 0:0) (slice (const 0'd0) 0:0))")
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def test_rotate_left_wrong(self):
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with self.assertRaisesRegex(TypeError,
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r"^Rotate amount must be an integer, not 'str'$"):
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Const(31).rotate_left("str")
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def test_rotate_right(self):
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self.assertRepr(Const(256).rotate_right(1),
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"(cat (slice (const 9'd256) 1:9) (slice (const 9'd256) 0:1))")
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self.assertRepr(Const(256).rotate_right(7),
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"(cat (slice (const 9'd256) 7:9) (slice (const 9'd256) 0:7))")
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self.assertRepr(Const(256).rotate_right(-1),
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"(cat (slice (const 9'd256) 8:9) (slice (const 9'd256) 0:8))")
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self.assertRepr(Const(256).rotate_right(-7),
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"(cat (slice (const 9'd256) 2:9) (slice (const 9'd256) 0:2))")
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self.assertRepr(Const(0, 0).rotate_right(3),
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"(cat (slice (const 0'd0) 0:0) (slice (const 0'd0) 0:0))")
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self.assertRepr(Const(0, 0).rotate_right(-3),
|
|
"(cat (slice (const 0'd0) 0:0) (slice (const 0'd0) 0:0))")
|
|
|
|
def test_rotate_right_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Rotate amount must be an integer, not 'str'$"):
|
|
Const(31).rotate_right("str")
|
|
|
|
def test_replicate_shape(self):
|
|
s1 = Const(10).replicate(3)
|
|
self.assertEqual(s1.shape(), unsigned(12))
|
|
self.assertIsInstance(s1.shape(), Shape)
|
|
s2 = Const(10).replicate(0)
|
|
self.assertEqual(s2.shape(), unsigned(0))
|
|
|
|
def test_replicate_count_wrong(self):
|
|
with self.assertRaises(TypeError):
|
|
Const(10).replicate(-1)
|
|
with self.assertRaises(TypeError):
|
|
Const(10).replicate("str")
|
|
|
|
def test_replicate_repr(self):
|
|
s = Const(10).replicate(3)
|
|
self.assertEqual(repr(s), "(cat (const 4'd10) (const 4'd10) (const 4'd10))")
|
|
|
|
def test_format_wrong(self):
|
|
sig = Signal()
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Value \(sig sig\) cannot be converted to string."):
|
|
f"{sig}"
|
|
|
|
|
|
class ConstTestCase(FHDLTestCase):
|
|
def test_shape(self):
|
|
self.assertEqual(Const(0).shape(), unsigned(1))
|
|
self.assertIsInstance(Const(0).shape(), Shape)
|
|
self.assertEqual(Const(1).shape(), unsigned(1))
|
|
self.assertEqual(Const(10).shape(), unsigned(4))
|
|
self.assertEqual(Const(-10).shape(), signed(5))
|
|
|
|
self.assertEqual(Const(1, 4).shape(), unsigned(4))
|
|
self.assertEqual(Const(-1, 4).shape(), signed(4))
|
|
self.assertEqual(Const(1, signed(4)).shape(), signed(4))
|
|
self.assertEqual(Const(0, unsigned(0)).shape(), unsigned(0))
|
|
|
|
def test_shape_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Width of an unsigned value must be zero or a positive integer, not -1$"):
|
|
Const(1, -1)
|
|
|
|
def test_wrong_fencepost(self):
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Value 10 equals the non-inclusive end of the constant shape "
|
|
r"range\(0, 10\); this is likely an off-by-one error$"):
|
|
Const(10, range(10))
|
|
|
|
def test_normalization(self):
|
|
self.assertEqual(Const(0b10110, signed(5)).value, -10)
|
|
self.assertEqual(Const(0b10000, signed(4)).value, 0)
|
|
self.assertEqual(Const(-16, 4).value, 0)
|
|
|
|
def test_value(self):
|
|
self.assertEqual(Const(10).value, 10)
|
|
|
|
def test_repr(self):
|
|
self.assertEqual(repr(Const(10)), "(const 4'd10)")
|
|
self.assertEqual(repr(Const(-10)), "(const 5'sd-10)")
|
|
|
|
def test_hash(self):
|
|
with self.assertRaises(TypeError):
|
|
hash(Const(0))
|
|
|
|
def test_shape_castable(self):
|
|
class MockConstValue:
|
|
def __init__(self, value):
|
|
self.value = value
|
|
|
|
class MockConstShape(ShapeCastable):
|
|
def as_shape(self):
|
|
return unsigned(8)
|
|
|
|
def __call__(self, value):
|
|
return value
|
|
|
|
def const(self, init):
|
|
return MockConstValue(init)
|
|
|
|
def from_bits(self, bits):
|
|
return bits
|
|
|
|
s = Const(10, MockConstShape())
|
|
self.assertIsInstance(s, MockConstValue)
|
|
self.assertEqual(s.value, 10)
|
|
|
|
|
|
class OperatorTestCase(FHDLTestCase):
|
|
def test_bool(self):
|
|
v = Const(0, 4).bool()
|
|
self.assertEqual(repr(v), "(b (const 4'd0))")
|
|
self.assertEqual(v.shape(), unsigned(1))
|
|
|
|
def test_invert(self):
|
|
v = ~Const(0, 4)
|
|
self.assertEqual(repr(v), "(~ (const 4'd0))")
|
|
self.assertEqual(v.shape(), unsigned(4))
|
|
|
|
def test_as_unsigned(self):
|
|
v = Const(-1, signed(4)).as_unsigned()
|
|
self.assertEqual(repr(v), "(u (const 4'sd-1))")
|
|
self.assertEqual(v.shape(), unsigned(4))
|
|
|
|
def test_as_signed(self):
|
|
v = Const(1, unsigned(4)).as_signed()
|
|
self.assertEqual(repr(v), "(s (const 4'd1))")
|
|
self.assertEqual(v.shape(), signed(4))
|
|
|
|
def test_as_signed_wrong(self):
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Cannot create a 0-width signed value$"):
|
|
Const(0, 0).as_signed()
|
|
|
|
def test_pos(self):
|
|
self.assertRepr(+Const(10), "(const 4'd10)")
|
|
|
|
def test_neg(self):
|
|
v1 = -Const(0, unsigned(4))
|
|
self.assertEqual(repr(v1), "(- (const 4'd0))")
|
|
self.assertEqual(v1.shape(), signed(5))
|
|
v2 = -Const(0, signed(4))
|
|
self.assertEqual(repr(v2), "(- (const 4'sd0))")
|
|
self.assertEqual(v2.shape(), signed(5))
|
|
|
|
def test_add(self):
|
|
v1 = Const(0, unsigned(4)) + Const(0, unsigned(6))
|
|
self.assertEqual(repr(v1), "(+ (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), unsigned(7))
|
|
v2 = Const(0, signed(4)) + Const(0, signed(6))
|
|
self.assertEqual(v2.shape(), signed(7))
|
|
v3 = Const(0, signed(4)) + Const(0, unsigned(4))
|
|
self.assertEqual(v3.shape(), signed(6))
|
|
v4 = Const(0, unsigned(4)) + Const(0, signed(4))
|
|
self.assertEqual(v4.shape(), signed(6))
|
|
v5 = 10 + Const(0, 4)
|
|
self.assertEqual(v5.shape(), unsigned(5))
|
|
|
|
def test_sub(self):
|
|
v1 = Const(0, unsigned(4)) - Const(0, unsigned(6))
|
|
self.assertEqual(repr(v1), "(- (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), signed(7))
|
|
v2 = Const(0, signed(4)) - Const(0, signed(6))
|
|
self.assertEqual(v2.shape(), signed(7))
|
|
v3 = Const(0, signed(4)) - Const(0, unsigned(4))
|
|
self.assertEqual(v3.shape(), signed(6))
|
|
v4 = Const(0, unsigned(4)) - Const(0, signed(4))
|
|
self.assertEqual(v4.shape(), signed(6))
|
|
v5 = 10 - Const(0, 4)
|
|
self.assertEqual(v5.shape(), signed(5))
|
|
v6 = 1 - Const(2)
|
|
self.assertEqual(v6.shape(), signed(3))
|
|
|
|
def test_mul(self):
|
|
v1 = Const(0, unsigned(4)) * Const(0, unsigned(6))
|
|
self.assertEqual(repr(v1), "(* (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), unsigned(10))
|
|
v2 = Const(0, signed(4)) * Const(0, signed(6))
|
|
self.assertEqual(v2.shape(), signed(10))
|
|
v3 = Const(0, signed(4)) * Const(0, unsigned(4))
|
|
self.assertEqual(v3.shape(), signed(8))
|
|
v5 = 10 * Const(0, 4)
|
|
self.assertEqual(v5.shape(), unsigned(8))
|
|
|
|
def test_mod(self):
|
|
v1 = Const(0, unsigned(4)) % Const(0, unsigned(6))
|
|
self.assertEqual(repr(v1), "(% (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), unsigned(6))
|
|
v3 = Const(0, signed(4)) % Const(0, unsigned(4))
|
|
self.assertEqual(v3.shape(), unsigned(4))
|
|
v4 = Const(0, signed(4)) % Const(0, signed(6))
|
|
self.assertEqual(v4.shape(), signed(6))
|
|
v5 = 10 % Const(0, 4)
|
|
self.assertEqual(v5.shape(), unsigned(4))
|
|
|
|
def test_floordiv(self):
|
|
v1 = Const(0, unsigned(4)) // Const(0, unsigned(6))
|
|
self.assertEqual(repr(v1), "(// (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), unsigned(4))
|
|
v3 = Const(0, signed(4)) // Const(0, unsigned(4))
|
|
self.assertEqual(v3.shape(), signed(4))
|
|
v4 = Const(0, signed(4)) // Const(0, signed(6))
|
|
self.assertEqual(v4.shape(), signed(5))
|
|
v5 = 10 // Const(0, 4)
|
|
self.assertEqual(v5.shape(), unsigned(4))
|
|
|
|
def test_and(self):
|
|
v1 = Const(0, unsigned(4)) & Const(0, unsigned(6))
|
|
self.assertEqual(repr(v1), "(& (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), unsigned(6))
|
|
v2 = Const(0, signed(4)) & Const(0, signed(6))
|
|
self.assertEqual(v2.shape(), signed(6))
|
|
v3 = Const(0, signed(4)) & Const(0, unsigned(4))
|
|
self.assertEqual(v3.shape(), signed(5))
|
|
v4 = Const(0, unsigned(4)) & Const(0, signed(4))
|
|
self.assertEqual(v4.shape(), signed(5))
|
|
v5 = 10 & Const(0, 4)
|
|
self.assertEqual(v5.shape(), unsigned(4))
|
|
|
|
def test_or(self):
|
|
v1 = Const(0, unsigned(4)) | Const(0, unsigned(6))
|
|
self.assertEqual(repr(v1), "(| (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), unsigned(6))
|
|
v2 = Const(0, signed(4)) | Const(0, signed(6))
|
|
self.assertEqual(v2.shape(), signed(6))
|
|
v3 = Const(0, signed(4)) | Const(0, unsigned(4))
|
|
self.assertEqual(v3.shape(), signed(5))
|
|
v4 = Const(0, unsigned(4)) | Const(0, signed(4))
|
|
self.assertEqual(v4.shape(), signed(5))
|
|
v5 = 10 | Const(0, 4)
|
|
self.assertEqual(v5.shape(), unsigned(4))
|
|
|
|
def test_xor(self):
|
|
v1 = Const(0, unsigned(4)) ^ Const(0, unsigned(6))
|
|
self.assertEqual(repr(v1), "(^ (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), unsigned(6))
|
|
v2 = Const(0, signed(4)) ^ Const(0, signed(6))
|
|
self.assertEqual(v2.shape(), signed(6))
|
|
v3 = Const(0, signed(4)) ^ Const(0, unsigned(4))
|
|
self.assertEqual(v3.shape(), signed(5))
|
|
v4 = Const(0, unsigned(4)) ^ Const(0, signed(4))
|
|
self.assertEqual(v4.shape(), signed(5))
|
|
v5 = 10 ^ Const(0, 4)
|
|
self.assertEqual(v5.shape(), unsigned(4))
|
|
|
|
def test_shl(self):
|
|
v1 = Const(1, 4) << Const(4)
|
|
self.assertEqual(repr(v1), "(<< (const 4'd1) (const 3'd4))")
|
|
self.assertEqual(v1.shape(), unsigned(11))
|
|
|
|
def test_shl_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Shift amount must be unsigned$"):
|
|
1 << Const(0, signed(6))
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Shift amount must be unsigned$"):
|
|
Const(1, unsigned(4)) << -1
|
|
|
|
def test_shr(self):
|
|
v1 = Const(1, 4) >> Const(4)
|
|
self.assertEqual(repr(v1), "(>> (const 4'd1) (const 3'd4))")
|
|
self.assertEqual(v1.shape(), unsigned(4))
|
|
|
|
def test_shr_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Shift amount must be unsigned$"):
|
|
1 << Const(0, signed(6))
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Shift amount must be unsigned$"):
|
|
Const(1, unsigned(4)) << -1
|
|
|
|
def test_lt(self):
|
|
v = Const(0, 4) < Const(0, 6)
|
|
self.assertEqual(repr(v), "(< (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v.shape(), unsigned(1))
|
|
|
|
def test_le(self):
|
|
v = Const(0, 4) <= Const(0, 6)
|
|
self.assertEqual(repr(v), "(<= (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v.shape(), unsigned(1))
|
|
|
|
def test_gt(self):
|
|
v = Const(0, 4) > Const(0, 6)
|
|
self.assertEqual(repr(v), "(> (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v.shape(), unsigned(1))
|
|
|
|
def test_ge(self):
|
|
v = Const(0, 4) >= Const(0, 6)
|
|
self.assertEqual(repr(v), "(>= (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v.shape(), unsigned(1))
|
|
|
|
def test_eq(self):
|
|
v = Const(0, 4) == Const(0, 6)
|
|
self.assertEqual(repr(v), "(== (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v.shape(), unsigned(1))
|
|
|
|
def test_ne(self):
|
|
v = Const(0, 4) != Const(0, 6)
|
|
self.assertEqual(repr(v), "(!= (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v.shape(), unsigned(1))
|
|
|
|
def test_mux(self):
|
|
s = Const(0)
|
|
v1 = Mux(s, Const(0, unsigned(4)), Const(0, unsigned(6)))
|
|
self.assertEqual(repr(v1), "(m (const 1'd0) (const 4'd0) (const 6'd0))")
|
|
self.assertEqual(v1.shape(), unsigned(6))
|
|
v2 = Mux(s, Const(0, signed(4)), Const(0, signed(6)))
|
|
self.assertEqual(v2.shape(), signed(6))
|
|
v3 = Mux(s, Const(0, signed(4)), Const(0, unsigned(4)))
|
|
self.assertEqual(v3.shape(), signed(5))
|
|
v4 = Mux(s, Const(0, unsigned(4)), Const(0, signed(4)))
|
|
self.assertEqual(v4.shape(), signed(5))
|
|
|
|
def test_mux_wide(self):
|
|
s = Const(0b100)
|
|
v = Mux(s, Const(0, unsigned(4)), Const(0, unsigned(6)))
|
|
self.assertEqual(repr(v), "(m (const 3'd4) (const 4'd0) (const 6'd0))")
|
|
|
|
def test_mux_bool(self):
|
|
v = Mux(True, Const(0), Const(0))
|
|
self.assertEqual(repr(v), "(m (const 1'd1) (const 1'd0) (const 1'd0))")
|
|
|
|
def test_any(self):
|
|
v = Const(0b101).any()
|
|
self.assertEqual(repr(v), "(r| (const 3'd5))")
|
|
|
|
def test_all(self):
|
|
v = Const(0b101).all()
|
|
self.assertEqual(repr(v), "(r& (const 3'd5))")
|
|
|
|
def test_xor_value(self):
|
|
v = Const(0b101).xor()
|
|
self.assertEqual(repr(v), "(r^ (const 3'd5))")
|
|
|
|
def test_matches(self):
|
|
s = Signal(4)
|
|
self.assertRepr(s.matches(), "(const 1'd0)")
|
|
self.assertRepr(s.matches(1), """
|
|
(== (sig s) (const 1'd1))
|
|
""")
|
|
self.assertRepr(s.matches(0, 1), """
|
|
(r| (cat (== (sig s) (const 1'd0)) (== (sig s) (const 1'd1))))
|
|
""")
|
|
self.assertRepr(s.matches("10--"), """
|
|
(== (& (sig s) (const 4'd12)) (const 4'd8))
|
|
""")
|
|
self.assertRepr(s.matches("1 0--"), """
|
|
(== (& (sig s) (const 4'd12)) (const 4'd8))
|
|
""")
|
|
|
|
def test_matches_enum(self):
|
|
s = Signal(SignedEnum)
|
|
self.assertRepr(s.matches(SignedEnum.FOO), """
|
|
(== (sig s) (const 2'sd-1))
|
|
""")
|
|
|
|
def test_matches_const_castable(self):
|
|
s = Signal(4)
|
|
self.assertRepr(s.matches(Cat(C(0b10, 2), C(0b11, 2))), """
|
|
(== (sig s) (const 4'd14))
|
|
""")
|
|
|
|
def test_matches_width_wrong(self):
|
|
s = Signal(4)
|
|
with self.assertRaisesRegex(SyntaxError,
|
|
r"^Match pattern '--' must have the same width as match value \(which is 4\)$"):
|
|
s.matches("--")
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Match pattern '22' \(5'10110\) is wider than match value \(which has "
|
|
r"width 4\); comparison will never be true$"):
|
|
s.matches(0b10110)
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Match pattern '\(cat \(const 1'd0\) \(const 4'd11\)\)' \(5'10110\) is wider "
|
|
r"than match value \(which has width 4\); comparison will never be true$"):
|
|
s.matches(Cat(0, C(0b1011, 4)))
|
|
|
|
def test_matches_bits_wrong(self):
|
|
s = Signal(4)
|
|
with self.assertRaisesRegex(SyntaxError,
|
|
r"^Match pattern 'abc' must consist of 0, 1, and - \(don't care\) bits, "
|
|
r"and may include whitespace$"):
|
|
s.matches("abc")
|
|
|
|
def test_matches_pattern_wrong(self):
|
|
s = Signal(4)
|
|
with self.assertRaisesRegex(SyntaxError,
|
|
r"^Match pattern must be a string or a constant-castable expression, not 1\.0$"):
|
|
s.matches(1.0)
|
|
|
|
def test_hash(self):
|
|
with self.assertRaises(TypeError):
|
|
hash(Const(0) + Const(0))
|
|
|
|
def test_abs(self):
|
|
s = Signal(4)
|
|
self.assertRepr(abs(s), """
|
|
(sig s)
|
|
""")
|
|
s = Signal(signed(4))
|
|
self.assertRepr(abs(s), """
|
|
(slice (m (>= (sig s) (const 1'd0)) (sig s) (- (sig s))) 0:4)
|
|
""")
|
|
self.assertEqual(abs(s).shape(), unsigned(4))
|
|
|
|
def test_contains(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Cannot use 'in' with an Amaranth value$"):
|
|
1 in Signal(3)
|
|
|
|
|
|
class SliceTestCase(FHDLTestCase):
|
|
def test_shape(self):
|
|
s1 = Const(10)[2]
|
|
self.assertEqual(s1.shape(), unsigned(1))
|
|
self.assertIsInstance(s1.shape(), Shape)
|
|
s2 = Const(-10)[0:2]
|
|
self.assertEqual(s2.shape(), unsigned(2))
|
|
|
|
def test_start_end_negative(self):
|
|
c = Const(0, 8)
|
|
s1 = Slice(c, 0, -1)
|
|
self.assertEqual((s1.start, s1.stop), (0, 7))
|
|
s1 = Slice(c, -4, -1)
|
|
self.assertEqual((s1.start, s1.stop), (4, 7))
|
|
|
|
def test_start_end_bool(self):
|
|
c = Const(0, 8)
|
|
s = Slice(c, False, True)
|
|
self.assertIs(type(s.start), int)
|
|
self.assertIs(type(s.stop), int)
|
|
|
|
def test_start_end_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Slice start must be an integer, not 'x'$"):
|
|
Slice(0, "x", 1)
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Slice stop must be an integer, not 'x'$"):
|
|
Slice(0, 1, "x")
|
|
|
|
def test_start_end_out_of_range(self):
|
|
c = Const(0, 8)
|
|
with self.assertRaisesRegex(IndexError,
|
|
r"^Cannot start slice 10 bits into 8-bit value$"):
|
|
Slice(c, 10, 12)
|
|
with self.assertRaisesRegex(IndexError,
|
|
r"^Cannot stop slice 12 bits into 8-bit value$"):
|
|
Slice(c, 0, 12)
|
|
with self.assertRaisesRegex(IndexError,
|
|
r"^Slice start 4 must be less than slice stop 2$"):
|
|
Slice(c, 4, 2)
|
|
with self.assertRaisesRegex(IndexError,
|
|
r"^Cannot start slice -9 bits into 8-bit value$"):
|
|
Slice(c, -9, -5)
|
|
|
|
def test_repr(self):
|
|
s1 = Const(10)[2]
|
|
self.assertEqual(repr(s1), "(slice (const 4'd10) 2:3)")
|
|
|
|
def test_const(self):
|
|
a = Const.cast(Const(0x1234, 16)[4:12])
|
|
self.assertEqual(a.value, 0x23)
|
|
self.assertEqual(a.width, 8)
|
|
self.assertEqual(a.signed, False)
|
|
a = Const.cast(Const(-4, signed(8))[1:6])
|
|
self.assertEqual(a.value, 0x1e)
|
|
self.assertEqual(a.width, 5)
|
|
self.assertEqual(a.signed, False)
|
|
|
|
|
|
class BitSelectTestCase(FHDLTestCase):
|
|
def setUp(self):
|
|
self.c = Const(0, 8)
|
|
self.s = Signal(range(self.c.width))
|
|
|
|
def test_shape(self):
|
|
s1 = self.c.bit_select(self.s, 2)
|
|
self.assertIsInstance(s1, Part)
|
|
self.assertEqual(s1.shape(), unsigned(2))
|
|
self.assertIsInstance(s1.shape(), Shape)
|
|
s2 = self.c.bit_select(self.s, 0)
|
|
self.assertIsInstance(s2, Part)
|
|
self.assertEqual(s2.shape(), unsigned(0))
|
|
|
|
def test_stride(self):
|
|
s1 = self.c.bit_select(self.s, 2)
|
|
self.assertIsInstance(s1, Part)
|
|
self.assertEqual(s1.stride, 1)
|
|
|
|
def test_const(self):
|
|
s1 = self.c.bit_select(1, 2)
|
|
self.assertIsInstance(s1, Slice)
|
|
self.assertRepr(s1, """(slice (const 8'd0) 1:3)""")
|
|
|
|
def test_width_wrong(self):
|
|
with self.assertRaises(TypeError):
|
|
self.c.bit_select(self.s, -1)
|
|
|
|
def test_repr(self):
|
|
s = self.c.bit_select(self.s, 2)
|
|
self.assertEqual(repr(s), "(part (const 8'd0) (sig s) 2 1)")
|
|
|
|
def test_offset_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Part offset must be unsigned$"):
|
|
self.c.bit_select(self.s.as_signed(), 1)
|
|
|
|
|
|
class WordSelectTestCase(FHDLTestCase):
|
|
def setUp(self):
|
|
self.c = Const(0, 8)
|
|
self.s = Signal(range(self.c.width))
|
|
|
|
def test_shape(self):
|
|
s1 = self.c.word_select(self.s, 2)
|
|
self.assertIsInstance(s1, Part)
|
|
self.assertEqual(s1.shape(), unsigned(2))
|
|
self.assertIsInstance(s1.shape(), Shape)
|
|
|
|
def test_stride(self):
|
|
s1 = self.c.word_select(self.s, 2)
|
|
self.assertIsInstance(s1, Part)
|
|
self.assertEqual(s1.stride, 2)
|
|
|
|
def test_const(self):
|
|
s1 = self.c.word_select(1, 2)
|
|
self.assertIsInstance(s1, Slice)
|
|
self.assertRepr(s1, """(slice (const 8'd0) 2:4)""")
|
|
|
|
def test_width_wrong(self):
|
|
with self.assertRaises(TypeError):
|
|
self.c.word_select(self.s, 0)
|
|
with self.assertRaises(TypeError):
|
|
self.c.word_select(self.s, -1)
|
|
|
|
def test_repr(self):
|
|
s = self.c.word_select(self.s, 2)
|
|
self.assertEqual(repr(s), "(part (const 8'd0) (sig s) 2 2)")
|
|
|
|
def test_offset_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Part offset must be unsigned$"):
|
|
self.c.word_select(self.s.as_signed(), 1)
|
|
|
|
|
|
class CatTestCase(FHDLTestCase):
|
|
def test_shape(self):
|
|
c0 = Cat()
|
|
self.assertEqual(c0.shape(), unsigned(0))
|
|
self.assertIsInstance(c0.shape(), Shape)
|
|
c1 = Cat(Const(10))
|
|
self.assertEqual(c1.shape(), unsigned(4))
|
|
c2 = Cat(Const(10), Const(1))
|
|
self.assertEqual(c2.shape(), unsigned(5))
|
|
c3 = Cat(Const(10), Const(1), Const(0))
|
|
self.assertEqual(c3.shape(), unsigned(6))
|
|
|
|
def test_repr(self):
|
|
c1 = Cat(Const(10), Const(1))
|
|
self.assertEqual(repr(c1), "(cat (const 4'd10) (const 1'd1))")
|
|
|
|
def test_cast(self):
|
|
c = Cat(1, 0)
|
|
self.assertEqual(repr(c), "(cat (const 1'd1) (const 1'd0))")
|
|
|
|
def test_str_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Object 'foo' cannot be converted to an Amaranth value$"):
|
|
Cat("foo")
|
|
|
|
def test_int_01(self):
|
|
with warnings.catch_warnings():
|
|
warnings.filterwarnings(action="error", category=SyntaxWarning)
|
|
Cat(0, 1, 1, 0)
|
|
|
|
def test_enum_wrong(self):
|
|
class Color(Enum):
|
|
RED = 1
|
|
BLUE = 2
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Argument #1 of Cat\(\) is an enumerated value <Color\.RED: 1> without "
|
|
r"a defined shape used in bit vector context; define the enumeration by "
|
|
r"inheriting from the class in amaranth\.lib\.enum and specifying "
|
|
r"the 'shape=' keyword argument$"):
|
|
c = Cat(Color.RED, Color.BLUE)
|
|
self.assertEqual(repr(c), "(cat (const 2'd1) (const 2'd2))")
|
|
|
|
def test_intenum_wrong(self):
|
|
class Color(int, Enum):
|
|
RED = 1
|
|
BLUE = 2
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Argument #1 of Cat\(\) is an enumerated value <Color\.RED: 1> without "
|
|
r"a defined shape used in bit vector context; define the enumeration by "
|
|
r"inheriting from the class in amaranth\.lib\.enum and specifying "
|
|
r"the 'shape=' keyword argument$"):
|
|
c = Cat(Color.RED, Color.BLUE)
|
|
self.assertEqual(repr(c), "(cat (const 2'd1) (const 2'd2))")
|
|
|
|
def test_int_wrong(self):
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Argument #1 of Cat\(\) is a bare integer 2 used in bit vector context; "
|
|
r"specify the width explicitly using C\(2, 2\)$"):
|
|
Cat(2)
|
|
|
|
def test_const(self):
|
|
a = Const.cast(Cat(Const(1, 1), Const(0, 1), Const(3, 2), Const(2, 2)))
|
|
self.assertEqual(a.value, 0x2d)
|
|
self.assertEqual(a.width, 6)
|
|
self.assertEqual(a.signed, False)
|
|
a = Const.cast(Cat(Const(-4, 8), Const(-3, 8)))
|
|
self.assertEqual(a.value, 0xfdfc)
|
|
self.assertEqual(a.width, 16)
|
|
self.assertEqual(a.signed, False)
|
|
|
|
|
|
class ArrayTestCase(FHDLTestCase):
|
|
def test_acts_like_array(self):
|
|
a = Array([1,2,3])
|
|
self.assertSequenceEqual(a, [1,2,3])
|
|
self.assertEqual(a[1], 2)
|
|
a[1] = 4
|
|
self.assertSequenceEqual(a, [1,4,3])
|
|
del a[1]
|
|
self.assertSequenceEqual(a, [1,3])
|
|
a.insert(1, 2)
|
|
self.assertSequenceEqual(a, [1,2,3])
|
|
|
|
def test_becomes_immutable(self):
|
|
a = Array([1,2,3])
|
|
s1 = Signal(range(len(a)))
|
|
s2 = Signal(range(len(a)))
|
|
v1 = a[s1]
|
|
v2 = a[s2]
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Array can no longer be mutated after it was indexed with a value at "):
|
|
a[1] = 2
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Array can no longer be mutated after it was indexed with a value at "):
|
|
del a[1]
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Array can no longer be mutated after it was indexed with a value at "):
|
|
a.insert(1, 2)
|
|
|
|
def test_index_value_castable(self):
|
|
class MyValue(ValueCastable):
|
|
def as_value(self):
|
|
return Signal()
|
|
|
|
def shape():
|
|
return unsigned(1)
|
|
|
|
a = Array([1,2,3])
|
|
a[MyValue()]
|
|
|
|
def test_repr(self):
|
|
a = Array([1,2,3])
|
|
self.assertEqual(repr(a), "(array mutable [1, 2, 3])")
|
|
s = Signal(range(len(a)))
|
|
v = a[s]
|
|
self.assertEqual(repr(a), "(array [1, 2, 3])")
|
|
|
|
|
|
class ArrayProxyTestCase(FHDLTestCase):
|
|
def test_index_shape(self):
|
|
m = Array(Array(x * y for y in range(1, 4)) for x in range(1, 4))
|
|
a = Signal(range(3))
|
|
b = Signal(range(3))
|
|
v = m[a][b]
|
|
self.assertEqual(v.shape(), unsigned(4))
|
|
|
|
def test_attr_shape(self):
|
|
from collections import namedtuple
|
|
pair = namedtuple("pair", ("p", "n"))
|
|
a = Array(pair(i, -i) for i in range(10))
|
|
s = Signal(range(len(a)))
|
|
v = a[s]
|
|
self.assertEqual(v.p.shape(), unsigned(4))
|
|
self.assertEqual(v.n.shape(), signed(5))
|
|
|
|
def test_attr_shape_signed(self):
|
|
# [unsigned(1), unsigned(1)] → unsigned(1)
|
|
a1 = Array([1, 1])
|
|
v1 = a1[Const(0)]
|
|
self.assertEqual(v1.shape(), unsigned(1))
|
|
# [signed(1), signed(1)] → signed(1)
|
|
a2 = Array([-1, -1])
|
|
v2 = a2[Const(0)]
|
|
self.assertEqual(v2.shape(), signed(1))
|
|
# [unsigned(1), signed(2)] → signed(2)
|
|
a3 = Array([1, -2])
|
|
v3 = a3[Const(0)]
|
|
self.assertEqual(v3.shape(), signed(2))
|
|
# [unsigned(1), signed(1)] → signed(2); 1st operand padded with sign bit!
|
|
a4 = Array([1, -1])
|
|
v4 = a4[Const(0)]
|
|
self.assertEqual(v4.shape(), signed(2))
|
|
# [unsigned(2), signed(1)] → signed(3); 1st operand padded with sign bit!
|
|
a5 = Array([1, -1])
|
|
v5 = a5[Const(0)]
|
|
self.assertEqual(v5.shape(), signed(2))
|
|
|
|
def test_repr(self):
|
|
a = Array([1, 2, 3])
|
|
s = Signal(range(3))
|
|
v = a[s]
|
|
self.assertEqual(repr(v), "(proxy (array [1, 2, 3]) (sig s))")
|
|
|
|
|
|
class SignalTestCase(FHDLTestCase):
|
|
def test_shape(self):
|
|
s1 = Signal()
|
|
self.assertEqual(s1.shape(), unsigned(1))
|
|
self.assertIsInstance(s1.shape(), Shape)
|
|
s2 = Signal(2)
|
|
self.assertEqual(s2.shape(), unsigned(2))
|
|
s3 = Signal(unsigned(2))
|
|
self.assertEqual(s3.shape(), unsigned(2))
|
|
s4 = Signal(signed(2))
|
|
self.assertEqual(s4.shape(), signed(2))
|
|
s5 = Signal(0)
|
|
self.assertEqual(s5.shape(), unsigned(0))
|
|
s6 = Signal(range(16))
|
|
self.assertEqual(s6.shape(), unsigned(4))
|
|
s7 = Signal(range(4, 16))
|
|
self.assertEqual(s7.shape(), unsigned(4))
|
|
s8 = Signal(range(-4, 16))
|
|
self.assertEqual(s8.shape(), signed(5))
|
|
s9 = Signal(range(-20, 16))
|
|
self.assertEqual(s9.shape(), signed(6))
|
|
s10 = Signal(range(0))
|
|
self.assertEqual(s10.shape(), unsigned(0))
|
|
s11 = Signal(range(1))
|
|
self.assertEqual(s11.shape(), unsigned(0))
|
|
|
|
def test_shape_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Width of an unsigned value must be zero or a positive integer, not -10$"):
|
|
Signal(-10)
|
|
|
|
def test_name(self):
|
|
s1 = Signal()
|
|
self.assertEqual(s1.name, "s1")
|
|
s2 = Signal(name="sig")
|
|
self.assertEqual(s2.name, "sig")
|
|
|
|
def test_init(self):
|
|
s1 = Signal(4, init=0b111, reset_less=True)
|
|
self.assertEqual(s1.init, 0b111)
|
|
self.assertEqual(s1.reset_less, True)
|
|
s2 = Signal.like(s1, init=0b011)
|
|
self.assertEqual(s2.init, 0b011)
|
|
|
|
def test_init_enum(self):
|
|
s1 = Signal(2, init=UnsignedEnum.BAR)
|
|
self.assertEqual(s1.init, 2)
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Initial value must be a constant-castable expression, "
|
|
r"not <StringEnum\.FOO: 'a'>$"):
|
|
Signal(1, init=StringEnum.FOO)
|
|
|
|
def test_init_const_castable(self):
|
|
s1 = Signal(4, init=Cat(Const(0, 1), Const(1, 1), Const(0, 2)))
|
|
self.assertEqual(s1.init, 2)
|
|
|
|
def test_init_shape_castable_const(self):
|
|
class CastableFromHex(ShapeCastable):
|
|
def as_shape(self):
|
|
return unsigned(8)
|
|
|
|
def __call__(self, value):
|
|
return value
|
|
|
|
def const(self, init):
|
|
return int(init, 16)
|
|
|
|
def from_bits(self, bits):
|
|
return bits
|
|
|
|
s1 = Signal(CastableFromHex(), init="aa")
|
|
self.assertEqual(s1.init, 0xaa)
|
|
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Constant returned by <.+?CastableFromHex.+?>\.const\(\) must have the shape "
|
|
r"that it casts to, unsigned\(8\), and not unsigned\(1\)$"):
|
|
Signal(CastableFromHex(), init="01")
|
|
|
|
def test_init_shape_castable_enum_wrong(self):
|
|
class EnumA(AmaranthEnum, shape=1):
|
|
X = 1
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Initial value must be a constant initializer of <enum 'EnumA'>$"):
|
|
Signal(EnumA) # implied init=0
|
|
|
|
def test_init_signed_mismatch(self):
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Initial value -2 is signed, but the signal shape is unsigned\(2\)$"):
|
|
Signal(unsigned(2), init=-2)
|
|
|
|
def test_init_wrong_too_wide(self):
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Initial value 2 will be truncated to the signal shape unsigned\(1\)$"):
|
|
Signal(unsigned(1), init=2)
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Initial value 1 will be truncated to the signal shape signed\(1\)$"):
|
|
Signal(signed(1), init=1)
|
|
with self.assertWarnsRegex(SyntaxWarning,
|
|
r"^Initial value -2 will be truncated to the signal shape signed\(1\)$"):
|
|
Signal(signed(1), init=-2)
|
|
|
|
def test_init_wrong_fencepost(self):
|
|
with self.assertRaisesRegex(SyntaxError,
|
|
r"^Initial value 10 equals the non-inclusive end of the signal shape "
|
|
r"range\(0, 10\); this is likely an off-by-one error$"):
|
|
Signal(range(0, 10), init=10)
|
|
with self.assertRaisesRegex(SyntaxError,
|
|
r"^Initial value 0 equals the non-inclusive end of the signal shape "
|
|
r"range\(0, 0\); this is likely an off-by-one error$"):
|
|
Signal(range(0), init=0)
|
|
|
|
def test_init_wrong_range(self):
|
|
with self.assertRaisesRegex(SyntaxError,
|
|
r"^Initial value 11 is not within the signal shape range\(0, 10\)$"):
|
|
Signal(range(0, 10), init=11)
|
|
with self.assertRaisesRegex(SyntaxError,
|
|
r"^Initial value 0 is not within the signal shape range\(1, 10\)$"):
|
|
Signal(range(1, 10), init=0)
|
|
|
|
def test_reset(self):
|
|
with self.assertWarnsRegex(DeprecationWarning,
|
|
r"^`reset=` is deprecated, use `init=` instead$"):
|
|
s1 = Signal(4, reset=0b111)
|
|
self.assertEqual(s1.init, 0b111)
|
|
with self.assertWarnsRegex(DeprecationWarning,
|
|
r"^`Signal.reset` is deprecated, use `Signal.init` instead$"):
|
|
self.assertEqual(s1.reset, 0b111)
|
|
with self.assertWarnsRegex(DeprecationWarning,
|
|
r"^`reset=` is deprecated, use `init=` instead$"):
|
|
s2 = Signal.like(s1, reset=3)
|
|
self.assertEqual(s2.init, 3)
|
|
|
|
def test_reset_wrong(self):
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Cannot specify both `reset` and `init`$"):
|
|
Signal(4, reset=1, init=1)
|
|
s1 = Signal(4)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Cannot specify both `reset` and `init`$"):
|
|
Signal.like(s1, reset=1, init=1)
|
|
|
|
def test_attrs(self):
|
|
s1 = Signal()
|
|
self.assertEqual(s1.attrs, {})
|
|
s2 = Signal(attrs={"no_retiming": True})
|
|
self.assertEqual(s2.attrs, {"no_retiming": True})
|
|
|
|
def test_repr(self):
|
|
s1 = Signal()
|
|
self.assertEqual(repr(s1), "(sig s1)")
|
|
|
|
def test_like(self):
|
|
s1 = Signal.like(Signal(4))
|
|
self.assertEqual(s1.shape(), unsigned(4))
|
|
s2 = Signal.like(Signal(range(-15, 1)))
|
|
self.assertEqual(s2.shape(), signed(5))
|
|
s3 = Signal.like(Signal(4, init=0b111, reset_less=True))
|
|
self.assertEqual(s3.init, 0b111)
|
|
self.assertEqual(s3.reset_less, True)
|
|
s4 = Signal.like(Signal(attrs={"no_retiming": True}))
|
|
self.assertEqual(s4.attrs, {"no_retiming": True})
|
|
s5 = Signal.like(Signal(decoder=str))
|
|
self.assertEqual(s5.decoder, str)
|
|
s6 = Signal.like(10)
|
|
self.assertEqual(s6.shape(), unsigned(4))
|
|
s7 = [Signal.like(Signal(4))][0]
|
|
self.assertEqual(s7.name, "$like")
|
|
s8 = Signal.like(s1, name_suffix="_ff")
|
|
self.assertEqual(s8.name, "s1_ff")
|
|
|
|
def test_decoder(self):
|
|
class Color(Enum):
|
|
RED = 1
|
|
BLUE = 2
|
|
s = Signal(decoder=Color)
|
|
self.assertEqual(s.decoder(1), "RED/1")
|
|
self.assertEqual(s.decoder(3), "3")
|
|
self.assertRepr(s._value_repr, "(Repr(FormatEnum(Color), (sig s), ()),)")
|
|
|
|
def test_enum(self):
|
|
s1 = Signal(UnsignedEnum)
|
|
self.assertEqual(s1.shape(), unsigned(2))
|
|
s2 = Signal(SignedEnum)
|
|
self.assertEqual(s2.shape(), signed(2))
|
|
self.assertEqual(s2.decoder(SignedEnum.FOO), "FOO/-1")
|
|
self.assertRepr(s2._value_repr, "(Repr(FormatEnum(SignedEnum), (sig s2), ()),)")
|
|
|
|
def test_const_wrong(self):
|
|
s1 = Signal()
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Value \(sig s1\) cannot be converted to an Amaranth constant$"):
|
|
Const.cast(s1)
|
|
|
|
def test_value_repr(self):
|
|
s = Signal()
|
|
self.assertRepr(s._value_repr, "(Repr(FormatInt(), (sig s), ()),)")
|
|
|
|
|
|
class ClockSignalTestCase(FHDLTestCase):
|
|
def test_domain(self):
|
|
s1 = ClockSignal()
|
|
self.assertEqual(s1.domain, "sync")
|
|
s2 = ClockSignal("pix")
|
|
self.assertEqual(s2.domain, "pix")
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Clock domain name must be a string, not 1$"):
|
|
ClockSignal(1)
|
|
|
|
def test_shape(self):
|
|
s1 = ClockSignal()
|
|
self.assertEqual(s1.shape(), unsigned(1))
|
|
self.assertIsInstance(s1.shape(), Shape)
|
|
|
|
def test_repr(self):
|
|
s1 = ClockSignal()
|
|
self.assertEqual(repr(s1), "(clk sync)")
|
|
|
|
def test_wrong_name_comb(self):
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Domain 'comb' does not have a clock$"):
|
|
ClockSignal("comb")
|
|
|
|
|
|
class ResetSignalTestCase(FHDLTestCase):
|
|
def test_domain(self):
|
|
s1 = ResetSignal()
|
|
self.assertEqual(s1.domain, "sync")
|
|
s2 = ResetSignal("pix")
|
|
self.assertEqual(s2.domain, "pix")
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Clock domain name must be a string, not 1$"):
|
|
ResetSignal(1)
|
|
|
|
def test_shape(self):
|
|
s1 = ResetSignal()
|
|
self.assertEqual(s1.shape(), unsigned(1))
|
|
self.assertIsInstance(s1.shape(), Shape)
|
|
|
|
def test_repr(self):
|
|
s1 = ResetSignal()
|
|
self.assertEqual(repr(s1), "(rst sync)")
|
|
|
|
def test_wrong_name_comb(self):
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Domain 'comb' does not have a reset$"):
|
|
ResetSignal("comb")
|
|
|
|
|
|
class MockValueCastable(ValueCastable):
|
|
def __init__(self, dest):
|
|
self.dest = dest
|
|
|
|
def shape(self):
|
|
return Value.cast(self.dest).shape()
|
|
|
|
def as_value(self):
|
|
return self.dest
|
|
|
|
|
|
class MockValueCastableChanges(ValueCastable):
|
|
def __init__(self, width=0):
|
|
self.width = width
|
|
|
|
def shape(self):
|
|
return unsigned(self.width)
|
|
|
|
with _ignore_deprecated():
|
|
@ValueCastable.lowermethod
|
|
def as_value(self):
|
|
return Signal(self.width)
|
|
|
|
|
|
class MockValueCastableCustomGetattr(ValueCastable):
|
|
def __init__(self):
|
|
pass
|
|
|
|
def shape(self):
|
|
assert False
|
|
|
|
with _ignore_deprecated():
|
|
@ValueCastable.lowermethod
|
|
def as_value(self):
|
|
return Const(0)
|
|
|
|
def __getattr__(self, attr):
|
|
assert False
|
|
|
|
|
|
class ValueCastableTestCase(FHDLTestCase):
|
|
def test_no_override(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Class 'MockValueCastableNoOverrideAsValue' deriving from 'ValueCastable' must "
|
|
r"override the 'as_value' method$"):
|
|
class MockValueCastableNoOverrideAsValue(ValueCastable):
|
|
def __init__(self):
|
|
pass
|
|
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Class 'MockValueCastableNoOverrideShapec' deriving from 'ValueCastable' must "
|
|
r"override the 'shape' method$"):
|
|
class MockValueCastableNoOverrideShapec(ValueCastable):
|
|
def __init__(self):
|
|
pass
|
|
|
|
def as_value(self):
|
|
return Signal()
|
|
|
|
def test_memoized(self):
|
|
vc = MockValueCastableChanges(1)
|
|
sig1 = vc.as_value()
|
|
vc.width = 2
|
|
sig2 = vc.as_value()
|
|
self.assertIs(sig1, sig2)
|
|
vc.width = 3
|
|
sig3 = Value.cast(vc)
|
|
self.assertIs(sig1, sig3)
|
|
|
|
def test_custom_getattr(self):
|
|
vc = MockValueCastableCustomGetattr()
|
|
vc.as_value() # shouldn't call __getattr__
|
|
|
|
def test_recurse_bad(self):
|
|
vc = MockValueCastable(None)
|
|
vc.dest = vc
|
|
with self.assertRaisesRegex(RecursionError,
|
|
r"^Value-castable object <.+> casts to itself$"):
|
|
Value.cast(vc)
|
|
|
|
def test_recurse(self):
|
|
vc = MockValueCastable(MockValueCastable(Signal()))
|
|
self.assertIsInstance(Value.cast(vc), Signal)
|
|
|
|
def test_abstract(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Can't instantiate abstract class ValueCastable$"):
|
|
ValueCastable()
|
|
|
|
|
|
class ValueLikeTestCase(FHDLTestCase):
|
|
def test_construct(self):
|
|
with self.assertRaises(TypeError):
|
|
ValueLike()
|
|
|
|
def test_subclass(self):
|
|
self.assertTrue(issubclass(Value, ValueLike))
|
|
self.assertTrue(issubclass(MockValueCastable, ValueLike))
|
|
self.assertTrue(issubclass(int, ValueLike))
|
|
self.assertFalse(issubclass(range, ValueLike))
|
|
self.assertFalse(issubclass(EnumMeta, ValueLike))
|
|
self.assertTrue(issubclass(Enum, ValueLike))
|
|
self.assertFalse(issubclass(str, ValueLike))
|
|
self.assertTrue(issubclass(ValueLike, ValueLike))
|
|
|
|
def test_isinstance(self):
|
|
self.assertTrue(isinstance(Const(0, 2), ValueLike))
|
|
self.assertTrue(isinstance(MockValueCastable(Const(0, 2)), ValueLike))
|
|
self.assertTrue(isinstance(2, ValueLike))
|
|
self.assertTrue(isinstance(-2, ValueLike))
|
|
self.assertFalse(isinstance(range(10), ValueLike))
|
|
|
|
def test_enum(self):
|
|
class EnumA(Enum):
|
|
A = 1
|
|
B = 2
|
|
class EnumB(Enum):
|
|
A = "a"
|
|
B = "b"
|
|
class EnumC(Enum):
|
|
A = Cat(Const(1, 2), Const(0, 2))
|
|
class EnumD(Enum):
|
|
A = 1
|
|
B = "a"
|
|
self.assertTrue(issubclass(EnumA, ValueLike))
|
|
self.assertFalse(issubclass(EnumB, ValueLike))
|
|
self.assertTrue(issubclass(EnumC, ValueLike))
|
|
self.assertFalse(issubclass(EnumD, ValueLike))
|
|
self.assertTrue(isinstance(EnumA.A, ValueLike))
|
|
self.assertFalse(isinstance(EnumB.A, ValueLike))
|
|
self.assertTrue(isinstance(EnumC.A, ValueLike))
|
|
self.assertFalse(isinstance(EnumD.A, ValueLike))
|
|
|
|
|
|
class InitialTestCase(FHDLTestCase):
|
|
def test_initial(self):
|
|
i = Initial()
|
|
self.assertEqual(i.shape(), unsigned(1))
|
|
|
|
|
|
class FormatTestCase(FHDLTestCase):
|
|
def test_construct(self):
|
|
a = Signal()
|
|
b = Signal()
|
|
c = Signal()
|
|
self.assertRepr(Format("abc"), "(format 'abc')")
|
|
fmt = Format("{{abc}}")
|
|
self.assertRepr(fmt, "(format '{{abc}}')")
|
|
self.assertEqual(fmt._chunks, ("{abc}",))
|
|
fmt = Format("{abc}", abc="{def}")
|
|
self.assertRepr(fmt, "(format '{{def}}')")
|
|
self.assertEqual(fmt._chunks, ("{def}",))
|
|
fmt = Format("a: {a:0{b}}, b: {b}", a=13, b=4)
|
|
self.assertRepr(fmt, "(format 'a: 0013, b: 4')")
|
|
fmt = Format("a: {a:0{b}x}, b: {b}", a=a, b=4)
|
|
self.assertRepr(fmt, "(format 'a: {:04x}, b: 4' (sig a))")
|
|
fmt = Format("a: {a}, b: {b}, a: {a}", a=a, b=b)
|
|
self.assertRepr(fmt, "(format 'a: {}, b: {}, a: {}' (sig a) (sig b) (sig a))")
|
|
fmt = Format("a: {0}, b: {1}, a: {0}", a, b)
|
|
self.assertRepr(fmt, "(format 'a: {}, b: {}, a: {}' (sig a) (sig b) (sig a))")
|
|
fmt = Format("a: {}, b: {}", a, b)
|
|
self.assertRepr(fmt, "(format 'a: {}, b: {}' (sig a) (sig b))")
|
|
subfmt = Format("a: {:2x}, b: {:3x}", a, b)
|
|
fmt = Format("sub: {}, c: {:4x}", subfmt, c)
|
|
self.assertRepr(fmt, "(format 'sub: a: {:2x}, b: {:3x}, c: {:4x}' (sig a) (sig b) (sig c))")
|
|
|
|
def test_construct_wrong(self):
|
|
a = Signal()
|
|
b = Signal(signed(16))
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^cannot switch from manual field specification to automatic field numbering$"):
|
|
Format("{0}, {}", a, b)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^cannot switch from automatic field numbering to manual field specification$"):
|
|
Format("{}, {1}", a, b)
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^'ValueCastable' formatting is not supported$"):
|
|
Format("{}", MockValueCastable(Const(0)))
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Format specifiers \('s'\) cannot be used for 'Format' objects$"):
|
|
Format("{:s}", Format(""))
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^format positional argument 1 was not used$"):
|
|
Format("{}", a, b)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^format keyword argument 'b' was not used$"):
|
|
Format("{a}", a=a, b=b)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Invalid format specifier 'meow'$"):
|
|
Format("{a:meow}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Alignment '\^' is not supported$"):
|
|
Format("{a:^13}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Grouping option ',' is not supported$"):
|
|
Format("{a:,}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Presentation type 'n' is not supported$"):
|
|
Format("{a:n}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Cannot print signed value with format specifier 'c'$"):
|
|
Format("{b:c}", b=b)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Value width must be divisible by 8 with format specifier 's'$"):
|
|
Format("{a:s}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Alignment '=' is not allowed with format specifier 'c'$"):
|
|
Format("{a:=13c}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Sign is not allowed with format specifier 'c'$"):
|
|
Format("{a:+13c}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Zero fill is not allowed with format specifier 'c'$"):
|
|
Format("{a:013c}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Alternate form is not allowed with format specifier 'c'$"):
|
|
Format("{a:#13c}", a=a)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Cannot specify '_' with format specifier 'c'$"):
|
|
Format("{a:_c}", a=a)
|
|
|
|
def test_plus(self):
|
|
a = Signal()
|
|
b = Signal()
|
|
fmt_a = Format("a = {};", a)
|
|
fmt_b = Format("b = {};", b)
|
|
fmt = fmt_a + fmt_b
|
|
self.assertRepr(fmt, "(format 'a = {};b = {};' (sig a) (sig b))")
|
|
self.assertEqual(fmt._chunks[2], ";b = ")
|
|
|
|
def test_plus_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^unsupported operand type\(s\) for \+: 'Format' and 'str'$"):
|
|
Format("") + ""
|
|
|
|
def test_format_wrong(self):
|
|
fmt = Format("")
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Format object .* cannot be converted to string."):
|
|
f"{fmt}"
|
|
|
|
|
|
class PrintTestCase(FHDLTestCase):
|
|
def test_construct(self):
|
|
a = Signal()
|
|
b = Signal()
|
|
p = Print("abc")
|
|
self.assertRepr(p, "(print (format 'abc\\n'))")
|
|
p = Print("abc", "def")
|
|
self.assertRepr(p, "(print (format 'abc def\\n'))")
|
|
p = Print("abc", b)
|
|
self.assertRepr(p, "(print (format 'abc {}\\n' (sig b)))")
|
|
p = Print(a, b, end="", sep=", ")
|
|
self.assertRepr(p, "(print (format '{}, {}' (sig a) (sig b)))")
|
|
p = Print(Format("a: {a:04x}", a=a))
|
|
self.assertRepr(p, "(print (format 'a: {:04x}\\n' (sig a)))")
|
|
|
|
def test_construct_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^'sep' must be a string, not 13$"):
|
|
Print("", sep=13)
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^'end' must be a string, not 13$"):
|
|
Print("", end=13)
|
|
|
|
|
|
class AssertTestCase(FHDLTestCase):
|
|
def test_construct(self):
|
|
a = Signal()
|
|
b = Signal()
|
|
p = Assert(a)
|
|
self.assertRepr(p, "(assert (sig a))")
|
|
p = Assert(a, "abc")
|
|
self.assertRepr(p, "(assert (sig a) (format 'abc'))")
|
|
p = Assert(a, Format("a = {}, b = {}", a, b))
|
|
self.assertRepr(p, "(assert (sig a) (format 'a = {}, b = {}' (sig a) (sig b)))")
|
|
|
|
def test_construct_wrong(self):
|
|
a = Signal()
|
|
b = Signal()
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Property message must be None, str, or Format, not \(sig b\)$"):
|
|
Assert(a, b)
|
|
|
|
|
|
class SwitchTestCase(FHDLTestCase):
|
|
def test_default_case(self):
|
|
s = Switch(Const(0), {None: []})
|
|
self.assertEqual(s.cases, {(): []})
|
|
|
|
def test_int_case(self):
|
|
s = Switch(Const(0, 8), {10: []})
|
|
self.assertEqual(s.cases, {("00001010",): []})
|
|
|
|
def test_int_neg_case(self):
|
|
s = Switch(Const(0, 8), {-10: []})
|
|
self.assertEqual(s.cases, {("11110110",): []})
|
|
|
|
def test_int_zero_width(self):
|
|
s = Switch(Const(0, 0), {0: []})
|
|
self.assertEqual(s.cases, {("",): []})
|
|
|
|
def test_int_zero_width_enum(self):
|
|
class ZeroEnum(Enum):
|
|
A = 0
|
|
s = Switch(Const(0, 0), {ZeroEnum.A: []})
|
|
self.assertEqual(s.cases, {("",): []})
|
|
|
|
def test_enum_case(self):
|
|
s = Switch(Const(0, UnsignedEnum), {UnsignedEnum.FOO: []})
|
|
self.assertEqual(s.cases, {("01",): []})
|
|
|
|
def test_str_case(self):
|
|
s = Switch(Const(0, 8), {"0000 11\t01": []})
|
|
self.assertEqual(s.cases, {("00001101",): []})
|
|
|
|
def test_two_cases(self):
|
|
s = Switch(Const(0, 8), {("00001111", 123): []})
|
|
self.assertEqual(s.cases, {("00001111", "01111011"): []})
|
|
|
|
|
|
class IOValueTestCase(FHDLTestCase):
|
|
def test_ioport(self):
|
|
a = IOPort(4)
|
|
self.assertEqual(len(a), 4)
|
|
self.assertEqual(a.attrs, {})
|
|
self.assertEqual(a.metadata, (None, None, None, None))
|
|
self.assertEqual(a._ioports(), {a})
|
|
self.assertRepr(a, "(io-port a)")
|
|
b = IOPort(3, name="b", attrs={"a": "b"}, metadata=["x", "y", "z"])
|
|
self.assertEqual(len(b), 3)
|
|
self.assertEqual(b.attrs, {"a": "b"})
|
|
self.assertEqual(b.metadata, ("x", "y", "z"))
|
|
self.assertEqual(b._ioports(), {b})
|
|
self.assertRepr(b, "(io-port b)")
|
|
|
|
def test_ioport_wrong(self):
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Name must be a string, not 3$"):
|
|
a = IOPort(2, name=3)
|
|
with self.assertRaises(TypeError):
|
|
a = IOPort("a")
|
|
with self.assertRaises(TypeError):
|
|
a = IOPort(8, attrs=3)
|
|
with self.assertRaises(TypeError):
|
|
a = IOPort(8, metadata=3)
|
|
with self.assertRaisesRegex(ValueError,
|
|
r"^Metadata length \(3\) doesn't match port width \(2\)$"):
|
|
a = IOPort(2, metadata=["a", "b", "c"])
|
|
|
|
def test_ioslice(self):
|
|
a = IOPort(8, metadata=["a", "b", "c", "d", "e", "f", "g", "h"])
|
|
s = a[2:5]
|
|
self.assertEqual(len(s), 3)
|
|
self.assertEqual(s.metadata, ("c", "d", "e"))
|
|
self.assertEqual(s._ioports(), {a})
|
|
self.assertRepr(s, "(io-slice (io-port a) 2:5)")
|
|
s = a[-5:-2]
|
|
self.assertEqual(len(s), 3)
|
|
self.assertEqual(s.metadata, ("d", "e", "f"))
|
|
self.assertEqual(s._ioports(), {a})
|
|
self.assertRepr(s, "(io-slice (io-port a) 3:6)")
|
|
s = IOSlice(a, -5, -2)
|
|
self.assertEqual(len(s), 3)
|
|
self.assertEqual(s.metadata, ("d", "e", "f"))
|
|
self.assertEqual(s._ioports(), {a})
|
|
self.assertRepr(s, "(io-slice (io-port a) 3:6)")
|
|
s = a[5]
|
|
self.assertEqual(len(s), 1)
|
|
self.assertEqual(s.metadata, ("f",))
|
|
self.assertEqual(s._ioports(), {a})
|
|
self.assertRepr(s, "(io-slice (io-port a) 5:6)")
|
|
s = a[-1]
|
|
self.assertEqual(len(s), 1)
|
|
self.assertEqual(s.metadata, ("h",))
|
|
self.assertEqual(s._ioports(), {a})
|
|
self.assertRepr(s, "(io-slice (io-port a) 7:8)")
|
|
s = a[::2]
|
|
self.assertEqual(len(s), 4)
|
|
self.assertEqual(s.metadata, ("a", "c", "e", "g"))
|
|
self.assertEqual(s._ioports(), {a})
|
|
self.assertRepr(s, "(io-cat (io-slice (io-port a) 0:1) (io-slice (io-port a) 2:3) (io-slice (io-port a) 4:5) (io-slice (io-port a) 6:7))")
|
|
|
|
def test_ioslice_wrong(self):
|
|
a = IOPort(8)
|
|
with self.assertRaises(IndexError):
|
|
a[8]
|
|
with self.assertRaises(IndexError):
|
|
a[-9]
|
|
with self.assertRaises(TypeError):
|
|
a["a"]
|
|
with self.assertRaises(IndexError):
|
|
IOSlice(a, 0, 9)
|
|
with self.assertRaises(IndexError):
|
|
IOSlice(a, -10, 8)
|
|
with self.assertRaises(TypeError):
|
|
IOSlice(a, 0, "a")
|
|
with self.assertRaises(TypeError):
|
|
IOSlice(a, "a", 8)
|
|
with self.assertRaises(IndexError):
|
|
a[5:3]
|
|
|
|
def test_iocat(self):
|
|
a = IOPort(3, name="a", metadata=["a", "b", "c"])
|
|
b = IOPort(2, name="b", metadata=["x", "y"])
|
|
c = Cat(a, b)
|
|
self.assertEqual(len(c), 5)
|
|
self.assertEqual(c.metadata, ("a", "b", "c", "x", "y"))
|
|
self.assertEqual(c._ioports(), {a, b})
|
|
self.assertRepr(c, "(io-cat (io-port a) (io-port b))")
|
|
c = Cat(a, Cat())
|
|
self.assertEqual(len(c), 3)
|
|
self.assertEqual(c.metadata, ("a", "b", "c"))
|
|
self.assertEqual(c._ioports(), {a})
|
|
self.assertRepr(c, "(io-cat (io-port a) (io-cat ))")
|
|
c = Cat(a, Cat()[:])
|
|
self.assertEqual(len(c), 3)
|
|
self.assertRepr(c, "(io-cat (io-port a) (io-cat ))")
|
|
|
|
def test_iocat_wrong(self):
|
|
a = IOPort(3, name="a")
|
|
b = Signal()
|
|
with self.assertRaisesRegex(TypeError,
|
|
r"^Object \(sig b\) cannot be converted to an IO value$"):
|
|
Cat(a, b)
|