a9653c8497
* wip * reorg * update sv int * apb4 working * apb3 working * version bump + ignore runner warning * remove redundant check * adding log on failure * cleaning up verilator version issue * devcontainer * Fix missing libpython in GitHub Actions CI environment (#21) * Initial plan * Install libpython in GitHub Actions for cocotb tests Co-authored-by: arnavsacheti <36746504+arnavsacheti@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: arnavsacheti <36746504+arnavsacheti@users.noreply.github.com> --------- Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
70 lines
2.0 KiB
Python
70 lines
2.0 KiB
Python
"""Utilities for resolving cocotb signal handles across simulators."""
|
|
|
|
from __future__ import annotations
|
|
|
|
from typing import Any, Iterable
|
|
|
|
|
|
class SignalHandle:
|
|
"""
|
|
Wrapper that resolves array elements even when the simulator does not expose
|
|
unpacked arrays through ``handle[idx]``.
|
|
"""
|
|
|
|
def __init__(self, dut, name: str) -> None:
|
|
self._dut = dut
|
|
self._name = name
|
|
self._base = getattr(dut, name, None)
|
|
self._cache: dict[tuple[int, ...], Any] = {}
|
|
|
|
def resolve(self, indices: tuple[int, ...]):
|
|
if not indices:
|
|
return self._base if self._base is not None else self._lookup(tuple())
|
|
|
|
if indices not in self._cache:
|
|
self._cache[indices] = self._direct_or_lookup(indices)
|
|
return self._cache[indices]
|
|
|
|
def _direct_or_lookup(self, indices: tuple[int, ...]):
|
|
if self._base is not None:
|
|
ref = self._base
|
|
try:
|
|
for idx in indices:
|
|
ref = ref[idx]
|
|
return ref
|
|
except (IndexError, TypeError, AttributeError):
|
|
pass
|
|
|
|
return self._lookup(indices)
|
|
|
|
def _lookup(self, indices: tuple[int, ...]):
|
|
suffix = "".join(f"[{idx}]" for idx in indices)
|
|
path = f"{self._name}{suffix}"
|
|
|
|
try:
|
|
return getattr(self._dut, path)
|
|
except AttributeError:
|
|
pass
|
|
|
|
errors: list[Exception] = []
|
|
for extended in (False, True):
|
|
try:
|
|
return self._dut._id(path, extended=extended)
|
|
except (AttributeError, ValueError) as exc:
|
|
errors.append(exc)
|
|
|
|
raise AttributeError(f"Unable to resolve handle '{path}' via dut._id") from errors[-1]
|
|
|
|
|
|
def resolve_handle(handle, indices: Iterable[int]):
|
|
"""Resolve either a regular cocotb handle or a ``SignalHandle`` wrapper."""
|
|
index_tuple = tuple(indices)
|
|
|
|
if isinstance(handle, SignalHandle):
|
|
return handle.resolve(index_tuple)
|
|
|
|
ref = handle
|
|
for idx in index_tuple:
|
|
ref = ref[idx]
|
|
return ref
|