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example howto handle Exceptions in shell

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Kamil Sopko
2016-03-10 16:01:50 +01:00
parent 4f2f989bdf
commit 6b527fa256
1 changed files with 55 additions and 31 deletions
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86
FlatCAMApp.py
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@@ -644,14 +644,32 @@ class App(QtCore.QObject):
else: else:
self.defaults['stats'][resource] = 1 self.defaults['stats'][resource] = 1
class TclErrorException(Exception):
"""
this exception is deffined here, to be able catch it if we sucessfully handle all errors from shell command
"""
pass
def raiseTclUnknownError(self, unknownException):
"""
raise Exception if is different type than TclErrorException
:param unknownException:
:return:
"""
if not isinstance(unknownException, self.TclErrorException):
self.raiseTclError("Unknown error: %s" % str(unknownException))
def raiseTclError(self, text): def raiseTclError(self, text):
""" """
this method pass exception from python into TCL as error, so we get stacktrace and reason this method pass exception from python into TCL as error, so we get stacktrace and reason
:param text: text of error :param text: text of error
:return: raise exception :return: raise exception
""" """
self.tcl.eval('return -code error "%s"' % text) self.tcl.eval('return -code error "%s"' % text)
raise Exception(text) raise self.TclErrorException(text)
def exec_command(self, text): def exec_command(self, text):
""" """
@@ -660,6 +678,7 @@ class App(QtCore.QObject):
:param text: Input command :param text: Input command
:return: None :return: None
""" """
self.report_usage('exec_command') self.report_usage('exec_command')
text = str(text) text = str(text)
@@ -2659,44 +2678,49 @@ class App(QtCore.QObject):
:param args: array of arguments :param args: array of arguments
:return: "Ok" if completed without errors :return: "Ok" if completed without errors
''' '''
a, kwa = h(*args)
types = {'outname': str}
for key in kwa: try:
if key not in types: a, kwa = h(*args)
self.raiseTclError('Unknown parameter: %s' % key) types = {'outname': str}
for key in kwa:
if key not in types:
self.raiseTclError('Unknown parameter: %s' % key)
try:
kwa[key] = types[key](kwa[key])
except Exception, e:
self.raiseTclError("Cannot cast argument '%s' to type %s." % (key, types[key]))
if name is None:
self.raiseTclError('Argument name is missing.')
try: try:
kwa[key] = types[key](kwa[key]) obj = self.collection.get_by_name(str(name))
except Exception, e: except:
self.raiseTclError("Cannot cast argument '%s' to type %s." % (key, types[key])) self.raiseTclError("Could not retrieve object: %s" % name)
if name is None: if obj is None:
self.raiseTclError('Argument name is missing.') self.raiseTclError("Object not found: %s" % name)
try: if not isinstance(obj, Geometry):
obj = self.collection.get_by_name(str(name)) self.raiseTclError('Expected Geometry, got %s %s.' % (name, type(obj)))
except:
self.raiseTclError("Could not retrieve object: %s" % name)
if obj is None: def geo_init(geo_obj, app_obj):
self.raiseTclError("Object not found: %s" % name) geo_obj.solid_geometry = obj_interiors
if not isinstance(obj, Geometry): if 'outname' in kwa:
self.raiseTclError('Expected Geometry, got %s %s.' % (name, type(obj))) outname = kwa['outname']
else:
outname = name + ".interiors"
def geo_init(geo_obj, app_obj): try:
geo_obj.solid_geometry = obj_interiors obj_interiors = obj.get_interiors()
self.new_object('geometry', outname, geo_init)
except Exception as e:
self.raiseTclError("Failed: %s" % str(e))
if 'outname' in kwa: except Exception as unknown:
outname = kwa['outname'] self.raiseTclUnknownError(unknown)
else:
outname = name + ".interiors"
try:
obj_interiors = obj.get_interiors()
self.new_object('geometry', outname, geo_init)
except Exception as e:
self.raiseTclError("Failed: %s" % str(e))
return 'Ok' return 'Ok'