def reduce_to_const(exp):
repl_available = Flag(simplify(exp) is not exp)
exp.replacement_available.connect(repl_available.set)
yield exp
print(dump(simplify(exp)))
assert all(exp == simplify(exp))
assert isinstance(simplify(exp), Constant), type(exp.replacement)
assert repl_available
def test_value_fix_1():
exp = Value(6)
exp.fix()
assert exp == 6
with pytest.raises(ValueError):
exp.set(4)
assert exp == 6
assert simplify(exp) == 6
assert isinstance(simplify(exp), Constant)
def test_interpolation():
val1 = Value(0, 1, 5, 1)
val2 = Value(10, 1, 0, 2)
t = Value(0)
exp = Interpolation(val1, val2, t)
assert all(exp == simplify(exp))
assert all(exp == (0, 1, 5, 1))
t.set(1)
assert all(exp == simplify(exp))
assert all(exp == (10, 1, 0, 2))
t.set(0.5)
assert all(exp == simplify(exp))
assert all(exp == (5, 1, 2.5, 1.5))
def test_fixed_falue_constant_propegation(formula, args, maybe_numpy):
values = tuple(Value(a) for a in args)
for value in values:
value.fix()
got = check_formula(maybe_numpy, formula, args, values)
if got:
assert isinstance(simplify(got), Constant)
def test_concat_of_slice_simplification_1(check_dump):
exp = Concat(Value(0, 1), Value(2))
exp = simplify(exp[1])
check_dump(exp, """
[1:2] <1.0>:
Value <0.0, 1.0>
""")
def test_interpolation_ramps():
t = Value(0)
for x in range(-2, 5):
exp = Interpolation(0, x, t)
for i in range(-10, 20):
t.set(i / 10)
assert exp == simplify(exp) == t * x
def test_progress_clamped(clock):
exp = Progress(clock, 2, delay=1)
assert exp == 0
clock.advance_sync(1)
assert exp == 0
clock.advance_sync(1)
assert exp == 0.5
clock.advance_sync(1)
assert exp == 1
assert isinstance(simplify(exp), Constant)
def __get__(self, instance, owner=None):
if instance is None:
return self
else:
exp = self._vector_property.__get__(instance, owner)
return _ComponentPropertyValue(
name=self.name,
parent_property=self,
instance=instance,
expression=simplify(exp)[self._start:self._end],
start=self._start,
end=self._end)
def test_complex_concat_simplification(check_dump):
val1 = Value(1)
val2 = Value(4, 5)
cat = Concat(val1, 2, 3, val2)
assert all(cat == (1, 2, 3, 4, 5))
check_dump(cat, """
Concat <1.0, 2.0, 3.0, 4.0, 5.0>:
Value <1.0>
Constant <2.0, 3.0>
Value <4.0, 5.0>
""")
val1.fix()
val2.fix()
check_dump(simplify(cat), 'Constant <1.0, 2.0, 3.0, 4.0, 5.0>')
def test_reduce_simplification_2(check_dump, cls_name, identity,
is_commutative, range_4):
cls = getattr(expressions, cls_name)
const = Constant(identity, identity, identity)
vals = [const] * 3
if range_4 < 3:
vals[range_4] = Value(identity, identity, identity)
if is_commutative or range_4 == 0:
expected = "Value <{0}, {0}, {0}>".format(float(identity))
else:
expected = """
{1} <{0}, {0}, {0}>:
Constant <{0}, {0}, {0}>
Value <{0}, {0}, {0}>
""".format(float(identity), cls.pretty_name)
else:
expected = "Constant <{0}, {0}, {0}>".format(float(identity))
exp = cls(vals)
check_dump(simplify(exp), expected)
def test_slice_replace_simplification2(check_dump):
val = Value(0, 1, 2)
val = val.replace(1, val[1] + 3)
val = val.replace(0, val[0] + 3)
val = val.replace(2, val[2] + 3)
check_dump(simplify(val), """
Concat <3.0, 4.0, 5.0>:
+ <3.0>:
[0:1] <0.0>:
Value <0.0, 1.0, 2.0> (&1)
Constant <3.0>
+ <4.0>:
[1:2] <1.0>:
Value <0.0, 1.0, 2.0> (*1)
Constant <3.0>
+ <5.0>:
[2:3] <2.0>:
Value <0.0, 1.0, 2.0> (*1)
Constant <3.0>
""")
def test_slice_of_concat_simplification_3(start, end, dump, check_dump):
val = Concat(Value(0, 1, 2), Value(3, 4, 5))
check_dump(simplify(val[start:end]), dump)
def children(self):
yield simplify(self._parent_property.__get__(self._instance))
def test_concat_of_slice_simplification_2(check_dump):
exp = Value(0, 1, 2)
exp = Concat(exp[0], exp[1], exp[2])
exp = simplify(exp)
check_dump(exp, "Value <0.0, 1.0, 2.0>")
def test_concat_of_slice_simplification_0(i, check_dump):
val = Value(0, 1, 2)
exp = Concat(val[0], val[1], val[2])
val.fix()
exp = simplify(exp[i])
check_dump(exp, "Constant <%s.0>" % i)
def test_simple_concat_simplification(check_dump):
exp = Concat(Constant(0, 1), Constant(2, 3))
check_dump(simplify(exp), 'Constant <0.0, 1.0, 2.0, 3.0>')
def test_interpolation_simplification():
val1 = Value(0, 1, 5, 1)
val2 = Value(10, 1, 0, 2)
assert simplify(Interpolation(val1, val2, 0)) is val1
assert simplify(Interpolation(val1, val2, 1)) is val2
def simplify(self, node):
expr, expected_map = node
expr = simplify(expr)
note(dump(expr))
return expr, expected_map
def __init__(self, parent_property, instance, expression):
self._parent_property = parent_property
self._instance = instance
self.replacement = simplify(expression)
def test_slice_of_concat_simplification(start, stop, tuples):
expected = sum(tuples, ())[start:stop]
exp = Concat(*(Value(*t) for t in tuples))[start:stop]
assert exp.get() == expected
assert simplify(exp).get() == expected
def __set__(self, instance, value):
exp = coerce(value, size=self._size)
if id(instance) not in self._instance_expressions:
finalize(instance, self._instance_expressions.pop,
id(instance), None)
self._instance_expressions[id(instance)] = simplify(exp)