Nested Functions

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jvff

Joined: 05 Jul 2005
Posts: 5
Location: Brazil

jvff 05 Jul 2005, 15:01

Hello,

I would like to know if there is something like nested functions in fasm preprocessor. This way one could do something like

Code:

start:
 func1:
  func2:
 func3:

So the nest is defined by spaces or tab spaces (further apart from start of line = deeper in nest).

Using it like this

Code:

start.func1.func2

Is there such feature or similiar? Thank you,

JVFF

05 Jul 2005, 15:01

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8356
Location: Kraków, Poland

Tomasz Grysztar 05 Jul 2005, 15:35

I tried to design some clever macros doing such things:

Code:

macro undefine [name]
 { local undefined
   name equ undefined }

macro func name
 { match any, subs@func
   \{ tmp@func equ subs@func
      restore subs@func
      subs@func equ tmp@func,name \}
   match , subs@func
   \{ restore subs@func
      subs@func equ name \}
   match parent, fullname@func
   \{ fullname@func equ parent\#.\#name
      fullname@func: \}
   match , fullname@func
   \{ fullname@func equ name \}
   subs@func equ
   name: }

macro endf
 { match subs, subs@func \{ undefine subs \}
   restore subs@func
   restore fullname@func }

fullname@func equ

Use them like:

Code:

func start
 func func1
  func func2
  endf
 endf
 func func3
 endf
endf


func start2
 call func1             ; calls start2.func1
 call start.func1
 call start.func1.func2

 func func1
 endf
endf

05 Jul 2005, 15:35

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 05 Jul 2005, 15:39

well - there are no "functions" in FASM's preprocessor. Did you mean macros, procedures or just nested labels (namespaces) - there was thread about these, try searching.

05 Jul 2005, 15:39

jvff

Joined: 05 Jul 2005
Posts: 5
Location: Brazil

jvff 05 Jul 2005, 15:47

Thank you very much Smile

I'm slowly migrating from NASM to FASM and I'm quite perplexed by it's macro abilities. That's exactly what I needed. I will try to learn more about macros so I can do some changes to it so I can use it with proc, invoke, and as labels. Again Thank you,

JVFF

05 Jul 2005, 15:47

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