Files
revng-revng/python/revng/api/utils.py
Giacomo Vercesi 7c3d9a3fcd Python API: automatically call destructors
Use the owning annotation in PipelineC/Prototypes.h to automatically
destroy resources when they go out of scope on the python side.
2022-05-24 08:59:08 +02:00

43 lines
1.1 KiB
Python

#
# This file is distributed under the MIT License. See LICENSE.md for details.
#
from pathlib import Path
from typing import Callable, Generator, Optional, TypeVar, Union
from ._capi import ffi
def make_python_string(s: ffi.CData) -> str:
if s == ffi.NULL:
return ""
bytestring = ffi.string(s)
return bytestring.decode("utf-8")
def make_c_string(s: Union[bytes, str]):
if isinstance(s, bytes):
return ffi.new("char[]", s)
if isinstance(s, str):
return ffi.new("char[]", s.encode("utf-8"))
raise TypeError(f"Invalid type: {s.__class__}")
T = TypeVar("T")
def make_generator(count: int, get_idx: Callable[[int], Optional[T]]) -> Generator[T, None, None]:
for i in range(count):
ret = get_idx(i)
if ret is not None:
yield ret
def save_file(path: Path, content: Union[bytes, str]):
if isinstance(content, str):
with open(path.resolve(), "w", encoding="utf-8") as str_f:
str_f.write(content)
else:
with open(path.resolve(), "wb") as bytes_f:
bytes_f.write(content)