IT-Consultant: Charles Pegge > OxygenBasic

Modules for O2

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Nicola_Piano:
Hi Charles,
I find it really interesting to use the module.
Is there an example in version 050p1? If so, what is it called?

... thanks again for your work.

Cheers

Charles Pegge:
Hi Nicola,

I have not produced any examples yet. It is quite hard to demonstrate the potential of modules on a small scale.

As I see it, modules are placed at the top of the language structural hierarchy:

program
  module
    class
      procedure
        subroutine
          block
            statement
              expression
                instruction


Here is on example linking a visible function to an internal function:

--- Code: ---========
module X
========

 interface
 '
 !* fi(int a) as int
 '
 inner
  '
  function ff(int a) as int
    print "ok " a
  end function
  '
  'links
  @fi=@ff
  '
 end inner
 '
end module
'
fi(3)

--- End code ---


Another example demonstrating how to retrofit a module around existing code, exposing only a few functions:

--- Code: ---module
  sys p1,p2,p3,p4
  inner
    ============
    uses console
    ============
    p1=@input
    p2=@output
    p3=@cls
    p4=@getkey
  end inner
  ! input() as string at p1
  ! output(string s)  at p2
  ! cls  ()           at p3
  ! pause() as int    at p4
end module

--- End code ---

Nicola_Piano:
Charles,
it's really interesting. I tried and saw that you can have different outputs and inputs (console or win) with this module.
(Did I get it right?  :))



--- Code: ---module
  sys p1,p2,p3,p4
  inner
    ============
    uses console
    ============
    p1=@input
    p2=@output
    p3=@cls
    p4=@getkey
  end inner
  ! input() as string at p1
  ! output(string s)  at p2
  ! cls  ()           at p3
  ! pause() as int    at p4
end module

string a=input  'input from console
output a        'print in console
print a        'print in wind
output a      'print in console
pause 'wait a key in console.
--- End code ---

Zlatko Vid:
well it looks like mini sub - program

Nicola_Piano:
Hi
Rather than a sub, it creates an environment that can be interfaced with another environment.
Or am I wrong?

Cheers

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