runtime/__init__.py
author Edouard Tisserant <edouard.tisserant@gmail.com>
Thu, 19 Mar 2020 09:31:07 +0100
branchsvghmi
changeset 2886 6c82fad8be65
parent 2586 b89484560a97
child 3750 f62625418bff
permissions -rw-r--r--
SVGHMI: Simplification and optimization. func:parselabel becomes a template.

All labels are parsed into a global variable containing resulting widget
description as a node-set. func:widget(id) was added for random access to
widget description.
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import absolute_import
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from __future__ import print_function
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import traceback
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import sys
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from runtime.Worker import worker
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MainWorker = worker()
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_PLCObjectSingleton = None
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def GetPLCObjectSingleton():
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    assert _PLCObjectSingleton is not None
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    return _PLCObjectSingleton
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def LogMessageAndException(msg, exp=None):
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    if exp is None:
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        exp = sys.exc_info()
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    if _PLCObjectSingleton is not None:
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        _PLCObjectSingleton.LogMessage(0, msg + '\n'.join(traceback.format_exception(*exp)))
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    print(msg)
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    traceback.print_exception(*exp)
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def CreatePLCObjectSingleton(*args, **kwargs):
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    global _PLCObjectSingleton
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    from runtime.PLCObject import PLCObject  # noqa # pylint: disable=wrong-import-position
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    _PLCObjectSingleton = PLCObject(*args, **kwargs)
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def default_evaluator(tocall, *args, **kwargs):
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    try:
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        res = (tocall(*args, **kwargs), None)
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    except Exception:
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        res = (None, sys.exc_info())
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    return res