Expression Parser Broken: Boolean Expressions With Negative Numbers

ptp

USA

Asked Mar 2016 — Edited Mar 2016

Resolved by DJ Sures!

The code below does not work:

`Code:`


1: ClearVariables() 
2: $status = -1
3: $retry = 3
4: if ($retry<3 AND $status<0)
5:   #do something
6: endif

error:

Quote:

Error on line 4: Missing String Quotes or Invalid Expression at index 8: -

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ptp

PRO

USA

#1 Mar 2016

the code works when the status variable has a non negative number.

ptp

PRO

USA

#2 Mar 2016

RepeatWhile and RepeatUntil are also affected

ptp

PRO

USA

#3 Mar 2016

this was the initial code (stops working when status is negative)

Code:

repeatwhile($retry>0 AND $status<0)
  print("Do something here")
  $retry = $retry - 1
endrepeatwhile

ptp

PRO

USA

#4 Mar 2016

to overcome the bug, i end up changing the logic and the code became more complex to read.

Code:

:loop
if ($retry>0)
  if ($status<0)
    Print("Do something here")
    $retry = $retry -1
    Goto(loop)
  endif
endif

WBS00001

USA

#5 Mar 2016

These variations seem to work:

Code:

if ($retry<3) AND ($status<0)
           or
if (($retry<3) AND ($status<0))

repeatwhile(($retry>0) AND ($status<0))

DJ Sures

PRO

Synthiam

#6 Mar 2016

fixed in next release

DJ Sures

PRO

Synthiam

#7 Mar 2016

PS - also, thanks for the examples @WBS and @ptp . It helps identify the solution with use case examples. Usually someone just says "this doesn't work" and i have to guess what they were trying to do

ptp

PRO

USA

#8 Mar 2016

Thanks

Welcome to Synthiam!

ptp