def test_parse_matrix_failures():
with pytest.raises(ValueError, match='Not surrounded by {{}}'):
_ = parse_matrix('1')
with pytest.raises(ValueError, match='Not surrounded by {{}}'):
_ = parse_matrix('{{1}')
with pytest.raises(ValueError, match='Not surrounded by {{}}'):
_ = parse_matrix('{1}}')
with pytest.raises(ValueError, match='Not surrounded by {{}}'):
_ = parse_matrix('1}}')
with pytest.raises(ValueError, match='Failed to parse complex'):
_ = parse_matrix('{{x}}')
def test_parse_matrix():
s = np.sqrt(0.5)
np.testing.assert_allclose(parse_matrix('{{√½,√½},{-√½,√½}}'),
np.array([[s, s], [-s, s]]),
atol=1e-8)
np.testing.assert_allclose(parse_matrix('{{√½,√½i},{√½i,√½}}'),
np.array([[s, s * 1j], [s * 1j, s]]),
atol=1e-8)
np.testing.assert_allclose(parse_matrix('{{1,-i},{i,1+i}}'),
np.array([[1, -1j], [1j, 1 + 1j]]),
atol=1e-8)
def _register_custom_gate(gate_json: Any, registry: Dict[str, CellMaker]):
if not isinstance(gate_json, Dict):
raise ValueError(
f'Custom gate json must be a dictionary.\n' f'Custom gate json={gate_json!r}.'
)
if 'id' not in gate_json:
raise ValueError(
f'Custom gate json must have an id key.\n' f'Custom gate json={gate_json!r}.'
)
identifier = gate_json['id']
if identifier in registry:
raise ValueError(f'Custom gate with duplicate identifier: {identifier!r}')
if 'matrix' in gate_json and 'circuit' in gate_json:
raise ValueError(
f'Custom gate json cannot have both a matrix and a circuit.\n'
f'Custom gate json={gate_json!r}.'
)
if 'matrix' in gate_json:
if not isinstance(gate_json['matrix'], str):
raise ValueError(
f'Custom gate matrix json must be a string.\n' f'Custom gate json={gate_json!r}.'
)
gate = ops.MatrixGate(parse_matrix(gate_json['matrix']))
registry[identifier] = CellMaker(
identifier=identifier,
size=gate.num_qubits(),
maker=lambda args: gate(*args.qubits[::-1]),
)
elif 'circuit' in gate_json:
comp = _parse_cols_into_composite_cell(gate_json['circuit'], registry)
registry[identifier] = CellMaker(
identifier=identifier,
size=comp.height,
maker=lambda args: comp.with_line_qubits_mapped_to(list(args.qubits)),
)
else:
raise ValueError(
f'Custom gate json must have a matrix or a circuit.\n'
f'Custom gate json={gate_json!r}.'
)
