RUNTIME: Variable forcing now uses limited list and buffer instead of systematical instance tree traversal and in-tree "fvalue" to keep track of forced value for pointed variables (external, located). Pointer swapping is performed when forcing externals and located, with backup being restored when forcing is reset. Retain still uses tree traversal.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz.
# See COPYING file for copyrights details.
from __future__ import absolute_import
from plcopen.XSLTModelQuery import XSLTModelQuery
class InstancesPathCollector(XSLTModelQuery):
""" object for collecting instances path list"""
def __init__(self, controller):
self.Instances = []
XSLTModelQuery.__init__(self,
controller,
"instances_path.xslt",
[("AddInstance", self.AddInstance)])
def AddInstance(self, context, *args):
self.Instances.append(args[0][0])
def Collect(self, root, name, debug):
self._process_xslt(root, debug, instance_type=name)
res = self.Instances
self.Instances = []
return res