COM Error Handler - not always fires event - when assigning values

[mLipok]

This issue is continuation for:
​https://www.autoitscript.com/trac/autoit/ticket/3167

Please check this repro script:

Global $oCOM_ErrorHandler = ObjEvent("AutoIt.Error", _ComErrorHandler)

Global $oFake[]
Global $oTestObject[]

$oFake.TestObject = $oTestObject
$oFake.TestObject.Check1 = 1

$oFake.FakeObject = 1

ConsoleWrite($oFake.FakeObject.Check2 & @CRLF) ; _ComErrorHandler() is not fired even this was already fixed in https://www.autoitscript.com/trac/autoit/ticket/3167

$oFake.FakeObject.Check3 = 1 ; _ComErrorHandler() is not fired and AutoIt ends with "Variable must be of type "Object""

Func _ComErrorHandler(ByRef $oError)
        #forceref $oError
        ConsoleWrite("! We intercepted a COM Error" & @CRLF)
EndFunc   ;==>_ComErrorHandler

IMHO both .Check2 and .Check3 should fires _ComErrorHandler() and show the console message.

Disscusion was taken on the forum here:
​https://www.autoitscript.com/forum/topic/213563-catching-com-errors-when-assigning-a-value-to-chained-object

ps.
sorry for so many edits.

[argumentum]

Global $oCOM_ErrorHandler = ObjEvent("AutoIt.Error", _ComErrorHandler) ; line 1
Global $oShell = ObjCreate("shell.application") ; line 2
$oShell.FakeObject = 1 ; line 3
$oShell.FakeObject.Check3 = 1 ; line 4
ConsoleWrite("hello" & @CRLF)  ; line 5
Func _ComErrorHandler(ByRef $oError, $iLine = @ScriptLineNumber)
        #forceref $oError
        ConsoleWrite('"' & @ScriptFullPath & '" (' & $iLine & ") : We intercepted a COM Error " & @CRLF)
EndFunc   ;==>_ComErrorHandler

"C:\Share\New AutoIt v3 Script.au3" (3) : We intercepted a COM Error 
"C:\Share\New AutoIt v3 Script.au3" (4) : We intercepted a COM Error 
"C:\Share\New AutoIt v3 Script.au3" (4) : ==> Variable must be of type "Object".:
$oShell.FakeObject.Check3 = 1
$oShell.FakeObject^ ERROR

..that is a simpler example (from a forum post)​https://www.autoitscript.com/forum/topic/213563-catching-com-errors-when-assigning-a-value-to-chained-object/page/2/#findComment-1551164

For now we can wrap it in Execute() to avoid the crash while it gets fixed.

[mLipok]

most complex example:
​https://www.autoitscript.com/forum/topic/213563-catching-com-errors-when-assigning-a-value-to-chained-object/page/2/#findComment-1551168

Line
1	#include <AutoItConstants.au3>
2
3	Global $oCOM_ErrorHandler = ObjEvent("AutoIt.Error", _ComErrorHandler)
4
5	Global $oMAP_object[]
6	Global $oTestObject1_Shell = ObjCreate("shell.application")
7	Global $oTestObject2_Map[]
8	Global $_WatchPoint = @ScriptLineNumber
9
10	#Region ; testing FIX https://www.autoitscript.com/trac/autoit/ticket/3167
11	$_WatchPoint = @ScriptLineNumber
12	;~ $oTestObject1_Shell.Explore(@ScriptDir) ; works
13
14	$_WatchPoint = @ScriptLineNumber
15	$oTestObject1_Shell.Windows().Item(666).bzzzzzzz ; _ComErrorHandler() IS FIRED and AutoIt PROPERLY continue processing next line - due COM ERROR HANDLER was used and FIXED in #3167
16
17	$_WatchPoint = @ScriptLineNumber
18	$oTestObject1_Shell.Windows().Item(666).bzzzzzzz = 1 ; _ComErrorHandler() IS FIRED and AutoIt PROPERLY continue processing next line - due COM ERROR HANDLER was used and FIXED in #3167
19	#EndRegion ; testing https://www.autoitscript.com/trac/autoit/ticket/3167
20
21	$_WatchPoint = @ScriptLineNumber
22	$oMAP_object.Shell = $oTestObject1_Shell
23
24	$_WatchPoint = @ScriptLineNumber
25	$oMAP_object.Shell.Explore(@ScriptDir) ; works
26
27	$_WatchPoint = @ScriptLineNumber
28	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.Shell", VarGetType($oMAP_object.Shell))
29
30	$_WatchPoint = @ScriptLineNumber
31	; _ComErrorHandler() IS FIRED and AutoIt PROPERLY continue processing next line - due COM ERROR HANDLER was used and FIXED in #3167
32	$oMAP_object.Shell.Fake1(@ScriptDir)
33	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.Shell.Fake1(@ScriptDir)", '')
34
35	$_WatchPoint = @ScriptLineNumber
36	; _ComErrorHandler() IS FIRED and AutoIt PROPERLY continue processing next line - due COM ERROR HANDLER was used and FIXED in #3167
37	$oMAP_object.Shell.Fake2 = 2
38	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.Shell.Fake2 = 2", '')
39
40	$_WatchPoint = @ScriptLineNumber
41	; _ComErrorHandler() IS FIRED and AutoIt PROPERLY continue processing next line - due COM ERROR HANDLER was used and FIXED in #3167
42	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.Shell.Fake3", $oMAP_object.Shell.Fake3)
43
44	$_WatchPoint = @ScriptLineNumber
45	$oMAP_object.TestObject2_Map = $oTestObject2_Map
46	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.TestObject2_Map", VarGetType($oMAP_object.TestObject2_Map))
47
48	$_WatchPoint = @ScriptLineNumber
49	$oMAP_object.TestObject2_Map.Check1 = 1 ; create MAP element called "Check1" with value = 1
50
51	$_WatchPoint = @ScriptLineNumber
52	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.TestObject2_Map.Check1", $oMAP_object.TestObject2_Map.Check1)
53
54	$_WatchPoint = @ScriptLineNumber
55	MsgBox(0, @ScriptLineNumber & " : $oTestObject2_Map.Check1", $oTestObject2_Map.Check1)
56
57	$_WatchPoint = @ScriptLineNumber
58	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.TestObject2_Map.Check1", $oMAP_object.TestObject2_Map.Check1)
59
60	$_WatchPoint = @ScriptLineNumber
61	$oMAP_object.FakeObject1 = 1 ; create MAP element called "FakeObject" with value = 1
62
63	$_WatchPoint = @ScriptLineNumber
64	; in the following line _ComErrorHandler() IS NOT FIRED although it has already been fixed in https://www.autoitscript.com/trac/autoit/ticket/3167 = IMHO this is AutoIt issue
65	; ... but maybe it is intentional to not FIRE _ComErrorHandler() as $oMAP_object.FakeObject1 is treated as MAP ELEMENT thus Check2 is also treated as MAP element and thus can be created on the fly
66	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.FakeObject1.Check2", "Result=" & $oMAP_object.FakeObject1.Check2)
67
68	$_WatchPoint = @ScriptLineNumber
69	; _ComErrorHandler() IS FIRED and AutoIt PROPERLY continue processing next line - due COM ERROR HANDLER was used and FIXED in #3167
70	MsgBox(0, @ScriptLineNumber & " : $oCOM_ErrorHandler.FakeObject1.Check3", $oCOM_ErrorHandler.FakeObject1.Check3)
71
72	$_WatchPoint = @ScriptLineNumber
73	; in the following line _ComErrorHandler() IS FIRED but AutoIt ends with (Variable must be of type "Object") = IMHO this is AutoIt issue
74	; ... this is the case @donnyh13 reported at the begining = IMHO this is AutoIt issue
75	$oCOM_ErrorHandler.FakeObject2.Check4 = 1
76	MsgBox(0, @ScriptLineNumber & " : $oCOM_ErrorHandler.FakeObject2.Check4", "")
77
78	$_WatchPoint = @ScriptLineNumber
79	; _ComErrorHandler() IS FIRED and AutoIt PROPERLY continue processing next line - due COM ERROR HANDLER was used and FIXED in #3167
80	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.FakeObject3.Check5", $oMAP_object.FakeObject3.Check5)
81
82	$_WatchPoint = @ScriptLineNumber
83	; in the following line _ComErrorHandler() IS NOT FIRED and AutoIt ends with (Variable must be of type "Object") = IMHO this is AutoIt issue
84	; ... this is the case @donnyh13 reported at the begining = IMHO this is AutoIt issue
85	$oMAP_object.FakeMapElement.Check6 = 1
86	MsgBox(0, @ScriptLineNumber & " : $oMAP_object.FakeMapElement.Check6", "")
87
88	Func _ComErrorHandler(ByRef $oError)
89	#forceref $oError
90	ConsoleWrite("! We intercepted a COM Error : Last @ScriptLineNumber (WatchPoint) =" & $_WatchPoint & @CRLF)
91	EndFunc ;==>_ComErrorHandler

#REMARK => .Check2 needs To be explained
#REMARK => both .Check4 and .Check6 should fires _ComErrorHandler() and show the console message also AutoIt should not ends With: Variable must be of type "Object"

[Jpm]

I find out with the above script that $oMAP_object.FakeObject3.Check5 is not firing either
Can you confirm?