Static & Global

[DXRW4E]

Guys are not talking about radical changes or to add a feature or other, we are talking about a small modification or improvement in Au3Check, that would actually help a lot UDF maker, nothing else

Ciao.

Edited December 31, 2013 by DXRW4E

[James]

Guys are not talking about radical changes or to add a feature or other, we are talking about a small modification or improvement in Au3Check, that would actually help a lot UDF maker, nothing else

Ciao.

What you're suggesting is that Au3Check looks for a directive #Au3CheckLock or whatever, if that's found, then the variables WITHIN that include file CANNOT be re-assigned by the file which it's included by?

[DXRW4E]

What you're suggesting is that Au3Check looks for a directive #Au3CheckLock or whatever, if that's found, then the variables WITHIN that include file CANNOT be re-assigned by the file which it's included by?

but according to my suggestion, a certain thing you can do perfectly in AutoIt, need just that when Au3Check load a file, take all the names of the functions in that file, and then see if there are Gobal Static, and get to know them only in those functions that file, or add a directive, where to put the names of the functions where seeuseedit that Global Static, nothing else

Ciao.

[jchd]

Is possible to add a (Optional) directive or something like that, in order to indicate to Au3Check the names of the functions where Global Static variable will be visible

Did I misrepresent your request?

BTW that would need to get beyond Au3Check, since the interpretor needs to be aware of your specifications too.

[DXRW4E]

Did I misrepresent your request?

There are many ways to do it, I think Jos & Developer or others will know better how to do it better, however the easiest way and the logical way is what i said in post before

 

BTW that would need to get beyond Au3Check, since the interpretor needs to be aware of your specifications too.

certainly AutoIt itself will know (in all parts of the script) the same as the history of the ByRefAutoItAu3Check, but to add a control in Au3Check to help udf makers to be more save that their Global Static variable is not usedchangeedit outside the basic function of the udf

it would have been nice if the Au3Check try to check this too, I know that in the end everything will never be 100% save, but at least it would help a lot

Ciao.

Edited December 31, 2013 by DXRW4E

[jchd]

As I said, that requires to pass this information to the compiler and after forces the interpretor to lookup, for every variable access, whether it is a local, global or global static and then in the latter case check in some new table that if we are inside a function, then this function is actually allowed to access that variable.

That doesn't look like a small change to me and a significative slow down of critical runtime code.

[DXRW4E]

If he knows even the AutoIt itself during the execution would be really nice, I suggested at least to know the Au3Check to alert the user ect ect, as it does with the ByRef or when used in the wrong way the Const variable ect ect

as mentioned above, a certain thing you can do perfectly in AutoIt, need just that when Au3Check load a file, take all the names of the functions in that file, and then see if there are Gobal Static, and get to know them only in those functions that file

Ciao.

Edited December 31, 2013 by DXRW4E

[BrewManNH]

Wouldn't you want a Local Static in a function? Why would you want it to be Global?

[jchd]

DXRW4E,

Then it would certainly be easier and much more powerful to introduce Blocks. The only requirement is that the interpretor knows where it is, just like it currently does with local vars inside functions. That's exactly the same technique, just one level higher.

[DXRW4E]

Hi jchd, compiler does not center, which serves only Au3Check inform user when using the Global Static out of the functions of the UDF where it was declare that Global Static variable, as it does with the ByRef or when used in the wrong way the Const variable ect ect, nothing else

@BrewManNH

concrete example see my INI File Processing Functions '?do=embed' frameborder='0' data-embedContent>> I have a handle them

I do not want users to accidentally change the $_HINI OK

There are lots and lots of other scenarios that require or need to use a Global Static, or better to say when a Global Static solves many situations, and since autoit does not support pointers, is very useful to have at least the Global Static

as I said this will help a lot only udf maker, because as already mentioned

because in personal script does not need not have to do it does not make sense to do it

in personal script simply use a different name for the variable ehhhh

Ciao.

Edited December 31, 2013 by DXRW4E

[MHz]

Here is one current method to privatize variables that can be shared between functions. You can get the value, work with it and then save it. You can use just 1 or more functions to handle just the local static variables that are used for the share.

expandcollapse popup

_Test_a()
_Test_b()
_Test_array()

If IsDeclared('a') Or IsDeclared('b') Or IsDeclared('array') Then
    ConsoleWrite('found static' & @CRLF)
EndIf

Func _Test_a()
    Local $result
    ; get value of static variable
    $result = _Static('a')
    ConsoleWrite($result & @CRLF)
    ; add 1 and save static variable
    $result += 1
    $result = _Static('a', $result)
    ConsoleWrite($result & @CRLF & @CRLF)
EndFunc

Func _Test_b()
    Local $result
    $result = _Static('b')
    ConsoleWrite($result & @CRLF)
    $result = _Static('b', $result * 10)
    ConsoleWrite($result & @CRLF & @CRLF)
EndFunc

Func _Test_array()
    Local $result
    $result = _Static('array')
    For $1 In $result
        ConsoleWrite($1 & @CRLF)
    Next
    ConsoleWrite(@CRLF)
    $result[0] = 50
    $result = _Static('array', $result)
    For $1 In $result
        ConsoleWrite($1 & @CRLF)
    Next
    ; and here is $a to finish
    $result = _Static('a')
    ConsoleWrite(@CRLF & $result & @CRLF)
EndFunc

Func _Static($variable, $value = '*')
    ; store static variables for use in other functions
    Switch $variable
        Case 'a'
            Static $a = 5
            If String($value) <> '*' Then $a = $value
            Return $a
        Case 'b'
            Static $b = 6
            If String($value) <> '*' Then $b = $value
            Return $b
        Case 'array'
            Static $array[5] = [1,2,3,4,5]
            If IsArray($value) Then $array = $value
            Return $array
    EndSwitch
EndFunc

Perhaps not great but it works.

[DXRW4E]

Hi MHz, Thank you, to do one thing there always a way ehhh (almost even from a cmd file do all ehhh), but have a Global Static is more safer and faster, it helps a lot also the performance, if so i use function & ByRef and Local Static Variable so everything is Ok

Ciao.

Edited December 31, 2013 by DXRW4E

[jchd]

; Interpretor need s to know about that!
#AutoIt3Check $xxx=_prot,protinc        ; list on functions allowed to access global static $xxx

_prot()
ConsoleWrite($xxx & @LF)    ; 5
_protinc()
ConsoleWrite($xxx & @LF)    ; 6
ConsoleWrite(_pirate() & @LF)   ; 6, could access it, or not?
_hacker()
ConsoleWrite($xxx & @LF)    ; not 6, could access it, or not?

Func _prot()
    Global Static $xxx = 5  ; legal
EndFunc

Func _protinc()
    $xxx += 1   ; legal too
EndFunc

Func _pirate()
    Return Eval("x" & "x" & "x")
EndFunc

Func _hacker()
    Assign("x" & "x" & "x", "Gotcha!")
EndFunc

[DXRW4E]

As said if he also knows AutoIt itself during the execution would be very nice, for the moment it would be useful to add it only in Au3Check, AutoIt itself will behave as usual, will know Global Static in all the scripts, in poor words will behave as it already does with Global Static
 

Au3Check do exactly what he does here, nothing else

Global $sGlobal = "Global text"
Global Static $sStatic = "Global Static text"

Global $sGlobal = "new text"
Global $sStatic = "new text2"
MsgBox(0,0,$sStatic)

;~ >Running:(3.3.10.2):C:\Program Files (x86)\AutoIt3\autoit3.exe "C:\Users\DXRW4E\Desktop\New AutoIt v3 Script (2).au3"    
;~ --> Press Ctrl+Alt+F5 to Restart or Ctrl+Break to Stop
;~ "C:\Users\DXRW4E\Desktop\New AutoIt v3 Script (2).au3" (5) : ==> Cannot make static variables into regular variables.:
;~ Global $sStatic = "new text2"
;~ Global ^ ERROR
;~ ->11:10:36 AutoIt3.exe ended.rc:1
;~ >Exit code: 1    Time: 0.42

or as it does with byref, which Autoit knows them and Au3Check No

#AutoIt3Wrapper_If_Run
    #AutoIt3Wrapper_Run_AU3Check=N
#Autoit3Wrapper_If_Compile
    #AutoIt3Wrapper_Run_AU3Check=N
#AutoIt3Wrapper_EndIf
MsgBox(0, "Test", _FuncName(111))
Func _FuncName(ByRef $a)
    $a = 222
    Return $a
EndFunc

so if it will be used

#AutoIt3Wrapper_If_Run
    #AutoIt3Wrapper_Run_AU3Check=N
#Autoit3Wrapper_If_Compile
    #AutoIt3Wrapper_Run_AU3Check=N
#AutoIt3Wrapper_EndIf

the script will be OK for Autoit, only Au3Check will alert the user for the problem, if are problems with use of Global Static ect ect

Sorry for my English

Ciao.

Edited December 31, 2013 by DXRW4E