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#!/usr/bin/env python3
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License.
import argparse
import pathlib
def check_all_delegates_have_unmanaged_function_pointer_attribute(file: pathlib.Path):
"""
Check that all 'public delegate' declarations have a matching UnmanagedFunctionPointer attribute.
:param file: C# source file to check.
:return: Number of errors
"""
print(f"Checking {file!s}")
errors = 0
line_num = 0
with open(str(file.resolve(strict=True))) as f:
prev_line = ""
for line in f:
line_num += 1
# strip so it's easier to deal with commented out lines.
line = line.strip() # noqa
if line.startswith("public delegate ") and not prev_line.startswith("[UnmanagedFunctionPointer"):
errors += 1
print(f"Line {line_num} is missing UnmanagedFunctionPointer attribute:\n\t{prev_line}\n\t{line}")
prev_line = line
return errors
def main():
arg_parser = argparse.ArgumentParser(
"Script to validate that the native delegates for the ONNX Runtime C# managed projects have the required "
"attributes for iOS AOT. Paths are inferred from the script location."
"Errors of this nature can only be detected at runtime, in a release build, of a Xamarin/MAUI app, "
"on an actual iOS device. Due to that we take extra steps to identify problems early."
)
# no real args. just using this to provide description as help message
_ = arg_parser.parse_args()
# CI needs resolve() as __file__ is a relative path when the script is run there
script_dir = pathlib.Path(__file__).resolve().parent
csharp_root = script_dir.parent
managed_dir = csharp_root / "src" / "Microsoft.ML.OnnxRuntime"
native_methods = managed_dir / "NativeMethods.shared.cs"
training_native_methods = managed_dir / "Training" / "NativeTrainingMethods.shared.cs"
errors = check_all_delegates_have_unmanaged_function_pointer_attribute(native_methods)
errors += check_all_delegates_have_unmanaged_function_pointer_attribute(training_native_methods)
if errors:
raise ValueError(f"{errors} errors were found. Please check output for specifics.")
if __name__ == "__main__":
main()
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