Source code for polygraphy.backend.common.loader

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# SPDX-License-Identifier: Apache-2.0
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from polygraphy import mod, util
from polygraphy.backend.base import BaseLoader


[docs]@mod.export(funcify=True) class BytesFromPath(BaseLoader): """ Functor that can load a file in binary mode ('rb'). """ def __init__(self, path): """ Loads a file in binary mode ('rb'). Args: path (str): The file path. """ self._path = path
[docs] def call_impl(self): """ Returns: bytes: The contents of the file. """ return util.load_file(self._path, description="bytes")
[docs]@mod.export(funcify=True) class SaveBytes(BaseLoader): """ Functor that can save bytes to a file. """ def __init__(self, obj, path): """ Saves bytes to a file. Args: obj (Union[bytes, Callable() -> bytes]): The bytes to save or a callable that returns them. path (str): The file path. """ self._bytes = obj self._path = path
[docs] def call_impl(self): """ Returns: bytes: The bytes saved. """ obj, _ = util.invoke_if_callable(self._bytes) util.save_file(obj, self._path) return obj
[docs]@mod.export(funcify=True) class InvokeFromScript(BaseLoader): """ Functor that invokes a function from a Python script. """ def __init__(self, path, name): """ Invokes the specified function from the specified Python script. If you intend to use the function more than once, you should import the function using ``polygraphy.mod.import_from_script`` instead. Args: path (str): The path to the Python script. The path must include a '.py' extension. name (str): The name of the function to import and invoke. """ self._path = path self._name = name
[docs] def call_impl(self, *args, **kwargs): """ Returns: object: The return value of the imported function. """ return mod.import_from_script(self._path, self._name)(*args, **kwargs)