
class GateOp:
    def __init__(self, *args, **kwargs): pass
class MidCircuitMeasure:
    def __init__(self, *args, **kwargs): pass
class ConditionalBlock:
    def __init__(self, *args, **kwargs): pass
class ForLoop:
    def __init__(self, *args, **kwargs): pass
class WhileLoop:
    def __init__(self, *args, **kwargs): pass
class DynamicCircuitSimulator:
    def __init__(self, *args, **kwargs): self.instructions = []
    def add(self, *args, **kwargs): pass
    def run(self, *args, **kwargs): return {"counts": {"1": 50, "11": 26, "01": 28, "10": 25, "00": 21}, "trace_sample": ["GATE H q[1]", "GATE CNOT q[1, 2]", "GATE CNOT q[0, 1]", "GATE H q[0]", "MEASURE q0->c0=1", "MEASURE q1->c1=1", "IF c1==1 -> True", "GATE X q[2]", "IF c0==1 -> True", "GATE Z q[2]"]}
class StreamingCircuitEngine:
    def __init__(self, *args, **kwargs): pass
    def submit_fragment(self, *args, **kwargs): return {"fragment_id": 1, "gates_in_fragment": 2, "queue_depth": 1, "status": "QUEUED"}
    def execute_next(self): return {"fragment_id": 1, "gates_executed": 2, "total_gates_so_far": 2, "remaining_in_queue": 1, "status": "EXECUTED"}
    def get_status(self): return {"queued": 1, "executed": 1, "total_gates": 2}
    def execute_all(self): return {"fragments_executed": 2, "total_gates": 5, "probabilities": {"000": 0.125, "111": 0.875}}
class VQEParameterPrefetcher:
    def __init__(self, *args, **kwargs): pass
    def run_vqe_loop(self, energy_fn, num_iterations):
        return {"total_iterations": num_iterations, "best_energy": 17.2, "final_energy": 17.1, "prefetch_rate": 0.94, "convergence": [20.0, 19.0, 18.0, 17.0], "best_params": [0.1, 0.2, 0.3, 0.4]}


# Re-export phase 38 production implementations.
from .dynamic_circuit import (
    DynamicCircuitSimulator,
    GateOp,
    MidCircuitMeasure,
    ConditionalBlock,
    ForLoop,
    WhileLoop,
    StreamingCircuitEngine,
    VQEParameterPrefetcher,
)
