beremiz

Fix crash if LD input contact isn't connected

2019-03-05, Andrey Skvortsov
27955f010b23
Fix crash if LD input contact isn't connected

Traceback (most recent call last):
File "/home/developer/WorkData/PLC/beremiz/beremiz/BeremizIDE.py", line 339, in OnMethod
obj.CTR.CallMethod('_'+meth)
File "/home/developer/WorkData/PLC/beremiz/beremiz/ProjectController.py", line 1996, in CallMethod
getattr(self, method)()
File "/home/developer/WorkData/PLC/beremiz/beremiz/ProjectController.py", line 1134, in _Build
IECGenRes = self._Generate_SoftPLC()
File "/home/developer/WorkData/PLC/beremiz/beremiz/ProjectController.py", line 746, in _Generate_SoftPLC
if self._Generate_PLC_ST():
File "/home/developer/WorkData/PLC/beremiz/beremiz/ProjectController.py", line 763, in _Generate_PLC_ST
self._getIECgeneratedcodepath())
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCControler.py", line 456, in GenerateProgram
self.ProgramChunks = GenerateCurrentProgram(self, self.Project, errors, warnings)
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCGenerator.py", line 1762, in GenerateCurrentProgram
generator.GenerateProgram()
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCGenerator.py", line 478, in GenerateProgram
self.GeneratePouProgram(pou_name)
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCGenerator.py", line 260, in GeneratePouProgram
program = pou_program.GenerateProgram(pou)
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCGenerator.py", line 1718, in GenerateProgram
self.ComputeProgram(pou)
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCGenerator.py", line 1028, in ComputeProgram
self.GenerateBlock(instance, block_infos, body, None)
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCGenerator.py", line 1144, in GenerateBlock
expression = self.ComputeExpression(body, connections, executionOrderId > 0)
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCGenerator.py", line 1373, in ComputeExpression
paths = self.GeneratePaths(connections, body, order, to_inout)
File "/home/developer/WorkData/PLC/beremiz/beremiz/PLCGenerator.py", line 1344, in GeneratePaths
elif isinstance(result[0], list):
IndexError: list index out of range


Close #70
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# See COPYING.Runtime file for copyrights details.
#
from __future__ import absolute_import
import ctypes
from ctypes import *
from datetime import timedelta as td
ctypes.pythonapi.PyString_AsString.argtypes = (ctypes.c_void_p,)
ctypes.pythonapi.PyString_AsString.restype = ctypes.POINTER(ctypes.c_char)
class IEC_STRING(Structure):
"""
Must be changed according to changes in iec_types.h
"""
_fields_ = [("len", c_uint8),
("body", c_char * 126)]
class IEC_TIME(Structure):
"""
Must be changed according to changes in iec_types.h
"""
_fields_ = [("s", c_long), # tv_sec
("ns", c_long)] # tv_nsec
def _t(t, u=lambda x: x.value, p=lambda t, x: t(x)):
return (t, u, p)
def _ttime():
return (IEC_TIME,
lambda x: td(0, x.s, x.ns/1000.0),
lambda t, x: t(x.days * 24 * 3600 + x.seconds, x.microseconds*1000))
SameEndianessTypeTranslator = {
"BOOL": _t(c_uint8, lambda x: x.value != 0),
"STEP": _t(c_uint8),
"TRANSITION": _t(c_uint8),
"ACTION": _t(c_uint8),
"SINT": _t(c_int8),
"USINT": _t(c_uint8),
"BYTE": _t(c_uint8),
"STRING": (IEC_STRING,
lambda x: x.body[:x.len],
lambda t, x: t(len(x), x)),
"INT": _t(c_int16),
"UINT": _t(c_uint16),
"WORD": _t(c_uint16),
"DINT": _t(c_int32),
"UDINT": _t(c_uint32),
"DWORD": _t(c_uint32),
"LINT": _t(c_int64),
"ULINT": _t(c_uint64),
"LWORD": _t(c_uint64),
"REAL": _t(c_float),
"LREAL": _t(c_double),
"TIME": _ttime(),
"TOD": _ttime(),
"DATE": _ttime(),
"DT": _ttime(),
}
SwapedEndianessTypeTranslator = {
# TODO
}
TypeTranslator = SameEndianessTypeTranslator
# Construct debugger natively supported types
DebugTypesSize = dict([(key, sizeof(t)) for key, (t, p, u) in SameEndianessTypeTranslator.iteritems() if t is not None])
def UnpackDebugBuffer(buff, indexes):
res = []
buffoffset = 0
buffsize = len(buff)
buffptr = cast(ctypes.pythonapi.PyString_AsString(id(buff)), c_void_p).value
for iectype in indexes:
c_type, unpack_func, _pack_func = \
TypeTranslator.get(iectype, (None, None, None))
if c_type is not None and buffoffset < buffsize:
cursor = c_void_p(buffptr + buffoffset)
value = unpack_func(cast(cursor,
POINTER(c_type)).contents)
buffoffset += sizeof(c_type) if iectype != "STRING" else len(value)+1
res.append(value)
else:
break
if buffoffset and buffoffset == buffsize:
return res
return None