import copy
import dataclasses
from contextlib import contextmanager


@dataclasses.dataclass
class CompilationCounter:
    num_graphs_seen: int = 0
    # including the splitting ops
    num_piecewise_graphs_seen: int = 0
    # not including the splitting ops
    num_piecewise_capturable_graphs_seen: int = 0
    num_inductor_compilations: int = 0
    num_cudagraph_caputured: int = 0

    def clone(self) -> "CompilationCounter":
        return copy.deepcopy(self)

    @contextmanager
    def expect(self, **kwargs):
        old = self.clone()
        yield
        for k, v in kwargs.items():
            assert getattr(self, k) - getattr(old, k) == v, (
                f"{k} not as expected, before it is {getattr(old, k)}"
                f", after it is {getattr(self, k)}, "
                f"expected diff is {v}")


compilation_counter = CompilationCounter()