Source code for wield.declarative.properties.utilities

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: © 2021 Massachusetts Institute of Technology.
# SPDX-FileCopyrightText: © 2021 Lee McCuller <mcculler@caltech.edu>
# NOTICE: authors should document their contributions in concisely in NOTICE
# with details inline in source files, comments, and docstrings.
"""
"""
import traceback as tb_mod
import sys

from .bases import (
    PropertyAttributeError,
)




def raise_attrerror_from_property(prop, obj, exc):
    """
    Because the exception calls some methods for better error reporting, those methods could be inside of unstable objects, so
    the call itself is wrapped
    """
    _, _, traceback = sys.exc_info()
    try:
        msg = str(exc) + " (within declarative.property named {0} of {1})".format(
            prop.__name__, repr(obj)
        )
    except Exception:
        msg = str(exc) + " (within declarative.property named {0})".format(
            prop.__name__
        )
    raise_from_with_traceback(
        PropertyAttributeError(msg),
        cause=exc,
        traceback=traceback,
    )





def try_name_file_line(func):
    """
    Trashes current exception
    """
    d = dict()
    try:
        d["filename"] = func.__code__.co_filename
    except Exception:
        d["filename"] = "<unknown>"

    try:
        d["lineno"] = func.__code__.co_firstlineno
    except Exception:
        d["lineno"] = "<unknown>"
    return d





def raise_msg_from_property(
    msg, t_exc, prop, obj, old_exc=None, if_from_file=None, **kwargs
):
    """ """
    _, _, traceback = sys.exc_info()
    # print("FILE FROM: ", tb_mod.extract_tb(traceback)[-1][0])
    # raise
    if if_from_file is not None and (
        tb_mod.extract_tb(traceback)[-1][0] != if_from_file
    ):
        return False
    d = dict(name=prop.__name__)
    try:
        d["orepr"] = repr(obj)
    except Exception:
        d["orepr"] = "<object of {0}>".format(obj.__class__.__name__)
    d.update(**kwargs)

    msg = msg.format(**d)

    raise_from_with_traceback(
        t_exc(msg),
        cause=old_exc,
        traceback=traceback,
    )