libadalang/extensions/python_api/unit_providers/methods

## vim: filetype=makopython

    @classmethod
    def for_project(cls, project_file, project=None, scenario_vars=None,
                    target=None, runtime=None):
        ${py_doc('libadalang.create_project_unit_provider', 8)}

        prj = GPRProject(project_file, scenario_vars, target, runtime,
                         print_errors=False)
        return prj.create_unit_provider(project)

    @classmethod
    def auto(cls, input_files, charset=None):
        ${py_doc('libadalang.create_auto_provider', 8)}

        # Create a NULL-terminated array of strings
        c_strings = [
            ctypes.c_char_p(_coerce_bytes('input_files', f,
                                          'a list of bytes strings'))
            for f in input_files
        ]
        c_array_type = ctypes.c_char_p * (len(input_files) + 1)
        c_array = c_array_type()
        for i, c_str in enumerate(c_strings):
            c_array[i] = c_str
        c_array[-1] = None

        c_array_ptr = ctypes.pointer(c_array)
        input_files_arg = ctypes.cast(c_array_ptr,
                                      ctypes.POINTER(ctypes.c_char_p))

        c_charset = _unwrap_charset(charset)

        c_value = _create_auto_provider(input_files_arg, c_charset)
        return _CUnitProvider(c_value)