src/lib/android/binder/rust/rpcbinder/generate.py

#!/usr/bin/env fuchsia-vendored-python
#
# Copyright 2024 The Fuchsia Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import os
import sys

# Add //build/rust to Python path so bindgen import works.
FUCHSIA_DIR = os.environ.get(
    "FUCHSIA_DIR",
    os.path.join(os.path.dirname(__file__), "..", "..", "..", ".."),
)
sys.path.append(os.path.join(FUCHSIA_DIR, "build", "rust"))

from bindgen import Bindgen

RELATIVE_SCRIPT_PATH = os.path.relpath(__file__, FUCHSIA_DIR)

MODULE_NOTICE_HEADER = f"""
/*
 * Copyright (C) 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

"""


MODULE_DOC_COMMENT = f"""
//! WARNING - This file was auto generated by //{RELATIVE_SCRIPT_PATH}.
//! Do not modify this file. To re-generate, run the following command from the root of
//! your Fuchsia checkout:
//!
//!    ./{RELATIVE_SCRIPT_PATH}
"""

RAW_LINES = (
    MODULE_DOC_COMMENT
    + """

use binder_ndk_sys::AIBinder;

"""
)


# Cross-architecture include paths (the ArchInfo class also has an arch-specific one to add).
INCLUDE_DIRS = [
    "third_party/android/platform/frameworks/native/libs/binder/ndk/include_cpp",
    "third_party/android/platform/frameworks/native/libs/binder/ndk/include_ndk",
    "third_party/android/platform/frameworks/native/libs/binder/ndk/include_platform",
    "third_party/android/platform/frameworks/native/libs/binder/include_rpc_unstable",
]

INPUT_FILE = "third_party/android/platform/frameworks/native/libs/binder/rust/rpcbinder/BinderBindings.hpp"

bindgen = Bindgen()
bindgen.ignore_functions = False
bindgen.enable_stdlib_include_dirs = True
bindgen.clang_target = "x86_64-linux-gnu"
bindgen.notice_header = MODULE_NOTICE_HEADER
bindgen.raw_lines = RAW_LINES
bindgen.include_dirs = INCLUDE_DIRS
rust_file = "src/lib/android/binder/rust/rpcbinder/third_party/binder_rpc_unstable_bindgen/lib.rs"
bindgen.additional_clang_flags = ["--std=c++20", "-x", "c++"]
bindgen.type_allowlist = [
    "ARpc.*",
]
bindgen.type_blocklist = [
    "AIBinder",
]
bindgen.function_allowlist = ["ARpc.*"]
bindgen.additional_bindgen_flags = [
    "--rustified-enum",
    "ARpcSession_FileDescriptorTransportMode",
]
bindgen.run(INPUT_FILE, rust_file)