plcopen/POUVariablesCollector.py
author Edouard Tisserant
Wed, 21 Sep 2022 11:41:28 +0200
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz.
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# See COPYING file for copyrights details.
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from __future__ import absolute_import
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from plcopen.XSLTModelQuery import XSLTModelQuery, _StringValue, _BoolValue, _translate_args
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from plcopen.types_enums import CLASS_TYPES, POU_TYPES, VAR_CLASS_INFOS
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def class_extraction(value):
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    class_type = CLASS_TYPES.get(value)
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    if class_type is not None:
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        return class_type
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    pou_type = POU_TYPES.get(value)
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    if pou_type is not None:
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        return pou_type
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    var_type = VAR_CLASS_INFOS.get(value)
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    if var_type is not None:
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        return var_type[1]
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    return None
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class _VariablesTreeItemInfos(object):
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    __slots__ = ["name", "var_class", "type", "edit", "debug", "variables"]
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    def __init__(self, *args):
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        for attr, value in zip(self.__slots__, args):
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            setattr(self, attr, value if value is not None else "")
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    def copy(self):
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        return _VariablesTreeItemInfos(*[getattr(self, attr) for attr in self.__slots__])
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class VariablesTreeInfosFactory(object):
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    def __init__(self):
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        self.Root = None
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    def GetRoot(self):
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        return self.Root
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    def SetRoot(self, context, *args):
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        self.Root = _VariablesTreeItemInfos(
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            *([''] + _translate_args(
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                [class_extraction, _StringValue] + [_BoolValue] * 2,
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                args) + [[]]))
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    def AddVariable(self, context, *args):
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        if self.Root is not None:
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            self.Root.variables.append(_VariablesTreeItemInfos(
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                *(_translate_args(
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                    [_StringValue, class_extraction, _StringValue] +
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                    [_BoolValue] * 2, args) + [[]])))
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class POUVariablesCollector(XSLTModelQuery):
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    def __init__(self, controller):
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        XSLTModelQuery.__init__(self,
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                                controller,
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                                "pou_variables.xslt",
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                                [(name, self.FactoryCaller(name))
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                                 for name in ["SetRoot", "AddVariable"]])
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    def FactoryCaller(self, funcname):
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        def CallFactory(*args):
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            return getattr(self.factory, funcname)(*args)
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        return CallFactory
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    def Collect(self, root, debug):
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        self.factory = VariablesTreeInfosFactory()
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        self._process_xslt(root, debug)
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        res = self.factory.GetRoot()
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        self.factory = None
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        return res