Reference opensquirrel circuit circuit_builder circuit_matrix_calculator common default_gate_modifiers default_instructions exceptions ir control_instruction default_gates single_qubit_gates two_qubit_gates expression ir non_unitary semantics bsr canonical_gate controlled_gate gate_semantic matrix_gate single_qubit_gate statement unitary passes decomposer aba_decomposer cnot2cz_decomposer cnot_decomposer cz_decomposer general_decomposer mckay_decomposer swap2cnot_decomposer swap2cz_decomposer exporter cqasmv1_exporter general_exporter quantify_scheduler_exporter mapper check_mapper general_mapper mapping mip_mapper qubit_remapper simple_mappers utils merger general_merger single_qubit_gates_merger router astar_router common general_router heuristics shortest_path_router validator general_validator interaction_validator primitive_gate_validator reader libqasm_parser register_manager reindexer qubit_reindexer utils context general_math identity_filter list matrix_expander writer writer