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import torch
from torch._library.utils import lookup_op

from magi_compiler.utils import magi_logger


def resolve_defined_ops(op_names: list[str]) -> list["torch._ops.OpOverload"]:
    """Resolve operator names to OpOverload objects.

    Skips operators that fail to resolve (e.g., operators not registered or
    model-specific operators not present in the current model).

    Note: Users should inspect the operator graph before lowering and ensure
    the specified operators are present in the final graph. Built-in PyTorch
    operators (aten::*, torch::*) may be decomposed, fused, or transformed
    during Inductor's compilation passes, so use them with caution.

    Args:
        op_names: List of operator names in PyTorch format
            (e.g., "athena::flash_attn_func")

    Returns:
        List of successfully resolved operator overloads
    """
    resolved = []
    for op_name in op_names:
        try:
            resolved.append(lookup_op(op_name))
        except Exception:
            magi_logger.info(f"Failed to resolve operator for graph partition: {op_name}")
            continue

    return resolved