"""LintQ detector stub -- auto-scaffolded from research note.

Generated by detector_stub_cron.py for cluster 34
(label: Cirq:transpilation).

Source note (#21): PATTERN: Compilation/transpilation gaps -- missing optimal layout synthesis, suboptimal 2-qubit gate heuristics, porting synthesis to faster backends. 2 issue(s) across: Cirq. Sample: Open GitHub issue #4362 in quantumlib/Cirq reported by…
"""

from __future__ import annotations

from typing import Dict, List


class DetectorTranspilation:
    """Detect the 'transpilation' anti-pattern reported against Cirq.

    STATUS: STUB. This class was scaffolded automatically from a real issue
    cluster in lintq_research.db. Fill in ``detect`` with the logic below and
    add it to the engine rule set.

    TODO -- implement the detection:
        PATTERN: Compilation/transpilation gaps -- missing optimal layout synthesis, suboptimal 2-qubit gate heuristics, porting synthesis to faster backends. 2 issue(s) across: Cirq. Sample: Open GitHub issue #4362 in quantumlib/Cirq reported by @tanujkhattar: Compiling: heuristic for compiling 2 qubits gates to the native gateset

        DETECTION LOGIC: Add a LintQ detector 'suboptimal-transpile' that warns when a circuit is submitted for execution without an explicit layout/routing pass on a coupling-map-constrained backend, or when a known optimal-synthesis routine exists for the target gate set but was not applied. Heuristic over the transpile() call graph.
    """

    id = "transpilation"
    theme = "transpilation"
    software = "Cirq"
    cluster_id = 34
    note_id = 21

    def detect(self, facts: Dict) -> List[Dict]:
        """Return a list of warning dicts for the given extracted facts.

        Args:
            facts: the 7-relation EDB fact dict produced by the extractor
                (Stmt, CFGEdge, Assign, CircuitAlloc, GateOp, MeasureOp,
                CircuitCall).

        Returns:
            A list of warning dicts, e.g.
            {"kind": "transpilation", "stmt": <id>, "qubit": <q>, "detail": <str>}.
        """
        raise NotImplementedError(
            "Detector stub -- implement 'transpilation' detection for Cirq. "
            "See the TODO block in this class for the source note's logic."
        )