def _get_parser():
rgc = RemoveGraphicalClasses()
rgc.remove("ptolemy.vergil.kernel.attributes.TextAttribute")
MoMLParser.setMoMLFilters([rgc])
parser = MoMLParser()
parser.reset()
return parser
def from_moml(self, moml, filters=[]):
""" Attempts to create a model from a string containing MoML
code.
Keyword attributes:
moml -- the MoML string
filters -- a list of MoMLFilter objects
"""
# apply the RemoveGraphicalClasses MoMLFilter
# but remove the TextAttribute class from the filter
# such that annotations don't get removed from the model
rgc = RemoveGraphicalClasses()
rgc.remove('ptolemy.vergil.kernel.attributes.TextAttribute')
rgc.remove('ptolemy.actor.lib.gui.Display')
rgc.remove('ptolemy.actor.lib.gui.TimedPlotter')
# create a new list for the filters, and use
# MoMLParser.setMoMLFilters with the new list. setMoMLFitlers is
# used because the MoML filters object inside MoMLParser is
# static, the only filtering on addMoMLFilter is memory address
# filtering, and the filters specific to hydrant are only used
# when executing a workflow, and no removeMoMLFilter object is
# present. This is simply the easiest way to ensure nothing
# goes wrong.
f = [rgc]
# add backwards compatibility filters
f.extend(BackwardCompatibility().allFilters())
f.extend(filters)
MoMLParser.setMoMLFilters(f)
messages = utils.check_moml_dependencies(moml)
# If a list is returned by validateMoML an error has occured
# during validation, and we shouldn't continue.
if messages is []:
raise Exception('VALIDATION ERRORS')
parser = MoMLParser()
parser.reset()
try:
self.proxied_entity = parser.parse(moml)
except java.lang.ExceptionInInitializerError, e:
e.printStackTrace()
raise
