Stop assembling ("assert" vs "err")

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Bargest

Joined: 09 Feb 2012
Posts: 79
Location: Russia

Bargest

I have a configuration file, where I can set many parameters of program. But some values or value combinations are invalid. So I use several tests like this:

Code:

if (ObjectHashTableSize < 2)
  display 'Error: Object hash table size is less than 2', 13  
end if

After it I want to stop compilation, because there is no point in compiling program with this value. Is there a way to stop compilation without generating an output file?

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11 Nov 2012, 10:55

cod3b453

Joined: 25 Aug 2004
Posts: 619

cod3b453

You can stop assembly using the err keyword:

Code:

if (ObjectHashTableSize < 2) 
  display 'Error: Object hash table size is less than 2', 13   
  err
end if

There is also an assert keyword:

Code:

assert ObjectHashTableSize < 2

11 Nov 2012, 11:07

Bargest

Joined: 09 Feb 2012
Posts: 79
Location: Russia

Bargest

Thank you. First code stopped compilation even if ObjectHashTableSize > 2, but

Code:

assert ObjectHashTableSize >= 2

works fine.

11 Nov 2012, 11:30

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr

Bargest wrote:

...First code stopped compilation even if ObjectHashTableSize > 2, but
Code:
assert ObjectHashTableSize >= 2    
works fine.

err directive is kinda too hard error (i.e. if your ObjectHashTableSize is forward-referenced, compilation will abort). Compare

Code:

ObjectHashTableSize = 3

if (ObjectHashTableSize < 2)
  display 'Error: Object hash table size is less than 2', 13   
  err
end if

and

Code:

if (ObjectHashTableSize < 2)
  display 'Error: Object hash table size is less than 2', 13   
  err
end if

ObjectHashTableSize = 3

There were several threads about that, e.g. this one.

21 Nov 2012, 16:24

Bargest

Joined: 09 Feb 2012
Posts: 79
Location: Russia

Bargest

baldr, thanks. First variant works good. In my source config file was included at the end.

21 Nov 2012, 16:33

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