"Variable/Constant/.etc never used" warning

[Phantomas]

Hello. I am surprised why it isn't exists yet!

Code: Select all

EnableExplicit
#constant = 0
Define int.i = 1
Define string.s = "hello"
Dim arr.s(4)
string = "hi"

Like that:

Warning: constant "#constant" is assigned but never used!
Warning: variable "int" (Integer) is assigned but never used!
Warning: variable "arr" (String, Array) is assigned but never used!

http://www.west-wind.com/Weblog/images/ ... a38576.png
http://d2o0t5hpnwv4c1.cloudfront.net/10 ... riable.png

[leonhardt]

like Delphi compiler

[Deluxe0321]

Good idea for variables, but not for constans..

Think about the include files for libs etc. it would be annoying to see 2k 'Warning: constant "#constant" is assigned but never used!' messages.
Unsued constants could be execluded from the ASM output (if not done allready?) - to save memory

[Danilo]

Constants are like macro replacements. This is the same:

Code: Select all

#CONSTANT      = 12
Macro CONSTANT : 12 : EndMacro

Not used, nothing is included. Used, the value is inserted. (x = #CONSTANT and x = CONSTANT become both x = 12)

Other languages have const variables. Variables that are not write-able after assignment (you can read them and you can get a pointer to const variables).
This is not the same as PB constants.

[Deluxe0321]

Thank you Danilo for making that clear.

[Joakim Christiansen]

Would be nice, but may also come with an option to turn it off.

[Josh]

Yes, would be a nice feature. For me it would be enough, checked only when I start Compiler/SyntaxCheck