Var++ and Var - - Increment/Decrement

[metron9]

If someone has a program that will read thru my old code
and replace

VARIABLE++ with VARIABLE = VARIABLE + 1

I sure could use it. It is slow and errorprone to replace the code manually.

I will write one if there are no replies. anyone that needs to convert old clipper code can have it when im finished.

Ill write it in foxbase of course.

 

[rgbean]

Would this always be the first and only thing on a line? Is VARIABLE ++ valid also? (i.e. with a space)

Can it be part of an expression?

As you can tell I didn't use Clipper, but I've written lots of cleanup / conversion type programs.

Rick

 

[metron9]

Well you put me to the test Here is a program that answers your questions with the output. The ++ or -- work the same as the C programming language on variables. I was surprised to see that "a ++" with the space between the "a" and the "++" compiled and ran. Also the ++ or -- can be prefixed or postfixed as in ++a or a++ if you wrote x=++a the a variable would be incremented by 1 and then assigned to x, with x=a++ the x variable would be assigned the value of a and then the a variable would be incremented.

no spaces between the ++ or -- are allowed. ie "+ +" or "- -"


Program:
a=1
? a
a++
? a
a ++
? a
x=a++
? x
? a
? a++
? a
++ a
? a
++a
? a


Output:
1
2
3
3
4
4
5
6
7

 

[rgbean]

Well I've, got a "simple" program that will process all .PRG files in a given directory. It seems to handle the following variants as a start:
var++
var--
++var
--var
var ++
var --
++ var
-- var

Since expressions like:
x=a++
?++a
x = y ++a && !
really expand to two (or more) commands, I didn't attack those yet (especially since you didn't give examples of:
?++a
x=++a
)

Since it's more than a couple lines, and most people probably aren't all that interested, please provide a way to get the program to you. You can always &quot;fix&quot; an email address so that it won't be picked up the automatic page readers for SPAM mail. Just post it like <yourfirstpart> AT NOSPAM <yoursecondpart> DOT com, I'll figure it out and Zip it up to you.

Rick

 

[metron9]

Sure send me the program
mark@ccspecial.com

I am sure it even creates a file like this:

LINE (xxxx) File xxx.PRG -> x=a++
CHANGED TO ---------------->> x=a
a=a+1