Documentation

[JRS]

print *p

Do you really believe that this is a good way to learn a language?

The natural reaction will be to become angry quickly and send the compiler to hell.

It has been my experience that Charles or one of the other forum members will respond in a timely manner. Many improvements started off as a question.

I have written a markdown page documenting the operators. As the help file does not provide any useful information for them, I have needed to do some guess work. Therefore, I don't know if all the information is correct. Also better usage examples for the logical and bitwise operators are needed.

See: https://github.com/JoseRoca/WinPBX/blob/master/docs/Oxygen/Operators.md

[JRS]

Thanks José!

I love your documentation style.

[JRS]

You should have Charles give you editing permission on the O2 Github wiki.

Check out the only issue on O2 Github. Persistence produces results.

[José Roca]

Better create a docs folder and build there markdown pages.

[JRS]

Charles,

I think it would be wise to give José the same project admin rights on the Github O2 repository as Mike has moderating the forum.

[Aurel]

Jose
What this example must do?
ASCIIZ s * 260
s = "Test string"
DIM p AS ASCIIZ PTR = @s
print *p

[José Roca]

In other Basic dialect it will print the content of the string. In O2, I don't know. It apparently does not support "PTR". I would like to know how can do it in O2.

This compiles, but only prints "Test str".

Code: [Select]

ASCIIZ s * 260
s = "Test string"
DIM p AS char AT STRPTR(s)
print p

This works

Code: [Select]

char s = "Test string"
DIM p AS char AT STRPTR(s)
print p

But it is not what I intended to do.

If I call a function that returns a pointer to am asciiz string, i.e. an asciiz ptr, how I can deference that pointer?

[Aurel]

Yes Jose some things in 02 are little bit crazy
but this work, i often forget what is what 

Code: [Select]

string s
s = "Test String"
@p = s  'adress of p hold s
print p ' show "Test String"


[Aurel]

This works too..

Code: [Select]

string s
s = "Test String"
char p[10] = s  'adress of p hold s
print  p ' show "Test String"

also i think that bstring work too 

[Charles Pegge]

José,

o2 retro-syntax is not perfect but here are some working variations:

Code: [Select]

DIM s AS ASCIIZ*260
'
'DIM s(260) AS ASCIIZ
'char s[260]
'
s = "Test string"
'
DIM p AS ASCIIZ PTR : @p = STRPTR s
'
'char*p=strptr s
'
'ASCIIZ p AT STRPTR s
'
print p


Commandline example:

Code: [Select]

  uses corewin
  '
  'wchar* cmdline = GetCommandLineW
  '
  'dim wchar*cmdline : @cmdline=GetCommandLineW
 
  'wchar ptr cmdline = GetCommandLineW
  '
  dim cmdline as wchar ptr
  @cmdline=GetCommandLineW
  '
  print cmdline

All string types are automatically derefereced to the char-level in an expression.

Similarly, strptr will always return the char address.

[José Roca]

Thanks, Charles. I had tried everything except @p.

Using "?" for casting is also unusual to me.

print hex(?f)

I think that I will use

print hex( (int) f )

or

print hex( cast(int) f)

I don't mind to type more if it makes the code less cryptic.

The char data type looks cool.

Code: [Select]

CHAR c = "Test string"
c += " - more text"
print c

It grows as if it was a dynamic null terminated string!