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101 lines
3.5 KiB
101 lines
3.5 KiB
#!/usr/bin/env python3
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#
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# Copyright (C) 2020 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import argparse
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import collections
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import os
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import pathlib
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import sys
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class RustModule:
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def __init__(self):
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self.files = []
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self.nested = collections.defaultdict(RustModule)
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def emit(self, output_file, indent=""):
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for (input_name, input_path) in self.files:
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output_file.write(indent)
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output_file.write("pub mod %s {\n" % input_name)
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# Copy the contents of the input file into the output
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with open(input_path, "r") as input_file:
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for l in input_file:
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output_file.write(indent)
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output_file.write(" ")
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output_file.write(l)
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output_file.write(indent)
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output_file.write("}\n")
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for name, mod in self.nested.items():
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output_file.write(indent)
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output_file.write("pub mod %s {\n" % name)
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mod.emit(output_file, indent + " ")
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output_file.write(indent)
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output_file.write("}\n")
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def emit_mangled(self, output_file, indent="", prefix=""):
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for (input_name, _) in self.files:
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output_file.write(indent)
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output_file.write("pub use %s::%s::mangled::*;\n" % (prefix, input_name))
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for name, mod in self.nested.items():
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new_prefix = prefix + "::" + name
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mod.emit_mangled(output_file, indent, prefix=new_prefix)
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def main(output, root, inputs, imports):
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root_module = RustModule()
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for inp in inputs:
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in_rel = os.path.relpath(inp, root)
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in_path = pathlib.PurePath(in_rel)
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node = root_module
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for part in in_path.parts[:-1]:
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node = node.nested[part]
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if os.path.isfile(inp):
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in_name, in_ext = os.path.splitext(in_path.parts[-1])
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node.files.append((in_name, inp))
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with open(output, "w") as lib_rs_file:
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lib_rs_file.write("#![allow(non_snake_case)]\n")
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lib_rs_file.write("#![allow(missing_docs)]\n")
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lib_rs_file.write("pub use binder::public_api as binder;\n")
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lib_rs_file.write("pub mod aidl {\n")
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root_module.emit(lib_rs_file, indent=" ")
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lib_rs_file.write("}\n")
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lib_rs_file.write("pub mod mangled {\n")
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root_module.emit_mangled(lib_rs_file, indent=" ", prefix="super::aidl")
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for imp in imports:
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lib_rs_file.write(" pub(crate) use %s::mangled::*;\n" % imp)
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lib_rs_file.write("}\n")
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description='Generate the top-level lib.rs.')
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parser.add_argument('output', help='Path to output .rs file')
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parser.add_argument('root', help='Common ancestor of all input files')
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parser.add_argument('inputs', nargs='+', help='Input .rs files')
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parser.add_argument('-I', '--import', action='append', dest='imports',
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default=[], help='Crates to import')
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args = parser.parse_args()
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if args is None:
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sys.exit(1)
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sys.exit(main(args.output, args.root, args.inputs, args.imports))
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