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Simplify initialization of array of elements that are not Copy #28

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merged 2 commits into from
Jun 6, 2024
Merged

Simplify initialization of array of elements that are not Copy #28

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c4adde0
Simplify initialization of array of elements that are not Copy
jlapeyre Jun 6, 2024
0bce4d4
Only generate array when necessary
jlapeyre Jun 6, 2024
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22 changes: 3 additions & 19 deletions crates/circuit/src/imports.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -104,13 +104,7 @@ pub fn populate_std_gate_map(py: Python, rs_gate: StandardGate, py_gate: PyObjec
match STDGATE_PYTHON_GATES.get_mut() {
Some(gate_map) => gate_map,
None => {
// A fixed size array is initialized like this because using the `[T; 5]` syntax
// requires T to be `Copy`. But `PyObject` isn't Copy so therefore Option<PyObject>
// as T isn't Copy. To avoid that we just list out None STANDARD_GATE_SIZE times
let array: [Option<PyObject>; STANDARD_GATE_SIZE] = [
None, None, None, None, None, None, None, None, None, None, None, None, None,
None, None, None, None, None,
];
let array: [Option<PyObject>; STANDARD_GATE_SIZE] = core::array::from_fn(|_| None);
STDGATE_PYTHON_GATES.set(py, array).unwrap();
STDGATE_PYTHON_GATES.get_mut().unwrap()
}
Expand All @@ -124,18 +118,8 @@ pub fn populate_std_gate_map(py: Python, rs_gate: StandardGate, py_gate: PyObjec

#[inline]
pub fn get_std_gate_class(py: Python, rs_gate: StandardGate) -> PyResult<PyObject> {
let gate_map = unsafe {
STDGATE_PYTHON_GATES.get_or_init(py, || {
// A fixed size array is initialized like this because using the `[T; 5]` syntax
// requires T to be `Copy`. But `PyObject` isn't Copy so therefore Option<PyObject>
// as T isn't Copy. To avoid that we just list out None STANDARD_GATE_SIZE times
let array: [Option<PyObject>; STANDARD_GATE_SIZE] = [
None, None, None, None, None, None, None, None, None, None, None, None, None, None,
None, None, None, None,
];
array
})
};
let gate_map =
unsafe { STDGATE_PYTHON_GATES.get_or_init(py, || core::array::from_fn(|_| None)) };
let gate = &gate_map[rs_gate as usize];
let populate = gate.is_none();
let out_gate = match gate {
Expand Down