XojoScript Returns Incorrect Values (BUG) 2014r2

General
1

From Real Studio 2011 through Xojo 2014 r1.1, the following demo script executes properly without warning and returns a value of 196.

Xojo 2014 r2 prompts an error then continues to process the equation, only returns an incorrect value (200)

Dim x as string 
x = Input("myvalue")
print str(200 - val(x))

Input is set from the XojoScript.Input method (value is 4), and Print simply displays the output via MessageBox.

Before I post a bug report, can anyone else confirm this bug? I’m assuming its a bug because the latest release is the only version to differentiate and cause issues.

Here’s the source to the demo:

http://www.xojodevspot.com/demos/xojoscriptbug.xojo_binary_project

2

I get 2 MSGBoxes

  1. Error at line: 3
  2. 200
3

OK…There is a bug for sure then, because XojoScript is not handling Int32/Double values correctly.

When the code runs it should end up looking like this internally:

Dim x as string 
x = "4"
print str(200 - val(x))

In essence, XojoScript is saying that you cannot subtract a double value from the integer value of 200. Hope this is fixed in the next release…it could potentially be a complete show-stopper for those using XojoScript.

4

No, because if you use this:

Dim x as string x = Input("myvalue") print x

The return is null. There’s nothing there. Something with the input is not right.

5

And you’re right… something is not correct.

Dim a as string dim b as integer a= "4" b = 200 - val(a) print str(b)

changing b to integer, double or whatever shows two errors for line 4; however, line 5 still prints the correct results.

6

Also, I haven’t used xojoScript enough to know if the input thing is a bug or not. Somebody may want to check that as well…

7

Then there’s 2 bugs in XojoScript.

It’s warning about Int32->Double and Input is not working at all.

8

If it works in every version of Real Studio through the very most recent version of Xojo, only to break in 2014r2, most likely it is a bug.

9

I only noticed the bugs when attempting to recompile a client piece of software, only to find that it didn’t function at all they way it was intended. (Worse was waiting for this release to fix past bugs) :-/

10

I agree Input does not seem to work at all and returns an empty string.

11

The warnings are correct, if unintuitive. The compiler:

  • sees the binary subtraction operator, the operand types being Int32 and Double (the return type of Val)
  • computes that the common type of Int32 and Double is Double
  • converts 200 to a Double, triggering a conversion warning
  • performs the subtraction, yielding a Double
  • sees the assignment operator, the right hand side being a Double and the variable’s type being Int32
  • converts the right hand side to an Int32, triggering a conversion warning
  • stores the Int32 into variable ‘b’

This is a bug. Please file a report in Feedback.

12

[quote=108245:@Joe Ranieri]The warnings are correct, if unintuitive. The compiler:

  • sees the binary subtraction operator, the operand types being Int32 and Double (the return type of Val)
  • computes that the common type of Int32 and Double is Double
  • converts 200 to a Double, triggering a conversion warning
  • performs the subtraction, yielding a Double
  • sees the assignment operator, the right hand side being a Double and the variable’s type being Int32
  • converts the right hand side to an Int32, triggering a conversion warning
  • stores the Int32 into variable ‘b’

This is a bug. Please file a report in Feedback.[/quote]

Thanks Joe! I figured I’d ask the community before filing a bug report. I thought maybe I missed a change to the way XojoScript handles inputs.

Feedback Posted:
https://xojo.com/issue/34351

13