From a34163c9d9a5cc0416bcaea2ebf8383bda9d505c Mon Sep 17 00:00:00 2001
From: Dmitrii Agibov <dmitrii.agibov@arm.com>
Date: Thu, 24 Nov 2022 08:34:38 +0000
Subject: Move TOSA checker functions into separate module

- Create module "compat" for tosa_checker backend
- Move TOSA checker functions into new module
- Update tests

Change-Id: Ia07034515fe43b2061b8892535067d21315cc721
---
 src/mlia/backend/tosa_checker/compat.py | 69 +++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 src/mlia/backend/tosa_checker/compat.py

(limited to 'src/mlia/backend/tosa_checker')

diff --git a/src/mlia/backend/tosa_checker/compat.py b/src/mlia/backend/tosa_checker/compat.py
new file mode 100644
index 0000000..e1bcb24
--- /dev/null
+++ b/src/mlia/backend/tosa_checker/compat.py
@@ -0,0 +1,69 @@
+# SPDX-FileCopyrightText: Copyright 2022, Arm Limited and/or its affiliates.
+# SPDX-License-Identifier: Apache-2.0
+"""TOSA compatibility module."""
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Any
+from typing import cast
+from typing import Protocol
+
+from mlia.core.typing import PathOrFileLike
+
+
+class TOSAChecker(Protocol):
+    """TOSA checker protocol."""
+
+    def is_tosa_compatible(self) -> bool:
+        """Return true if model is TOSA compatible."""
+
+    def _get_tosa_compatibility_for_ops(self) -> list[Any]:
+        """Return list of operators."""
+
+
+@dataclass
+class Operator:
+    """Operator's TOSA compatibility info."""
+
+    location: str
+    name: str
+    is_tosa_compatible: bool
+
+
+@dataclass
+class TOSACompatibilityInfo:
+    """Models' TOSA compatibility information."""
+
+    tosa_compatible: bool
+    operators: list[Operator]
+
+
+def get_tosa_compatibility_info(
+    tflite_model_path: PathOrFileLike,
+) -> TOSACompatibilityInfo:
+    """Return list of the operators."""
+    checker = get_tosa_checker(tflite_model_path)
+
+    if checker is None:
+        raise Exception(
+            "TOSA checker is not available. "
+            "Please make sure that 'tosa-checker' backend is installed."
+        )
+
+    ops = [
+        Operator(item.location, item.name, item.is_tosa_compatible)
+        for item in checker._get_tosa_compatibility_for_ops()  # pylint: disable=protected-access
+    ]
+
+    return TOSACompatibilityInfo(checker.is_tosa_compatible(), ops)
+
+
+def get_tosa_checker(tflite_model_path: PathOrFileLike) -> TOSAChecker | None:
+    """Return instance of the TOSA checker."""
+    try:
+        import tosa_checker as tc  # pylint: disable=import-outside-toplevel
+    except ImportError:
+        return None
+
+    checker = tc.TOSAChecker(str(tflite_model_path))
+    return cast(TOSAChecker, checker)
-- 
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