[gforth] / gforth / assert.fs  

gforth: gforth/assert.fs

Diff for /gforth/assert.fs between version 1.3 and 1.4

version 1.3, Mon Mar 13 09:17:23 1995 UTC version 1.4, Mon Oct 16 18:33:05 1995 UTC
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 \ !! factor out line number printing, share with debugging.fs  \ !! factor out line number printing, share with debugging.fs
   
 variable assert-level ( -- a-addr ) \ new  variable assert-level ( -- a-addr ) \ gforth
 \G all assertions above this level are turned off  \G all assertions above this level are turned off
 1 assert-level !  1 assert-level !
   
 : assertn ( n -- ) \ new  : assertn ( n -- ) \ gforth assert-n
     \ this is internal (it is not immediate)      \ this is internal (it is not immediate)
     assert-level @ >      assert-level @ >
     if      if
         POSTPONE (          POSTPONE (
     then ;      then ;
   
 : assert0( ( -- ) \ new  : assert0( ( -- ) \ gforth assert-zero
     \G important assertions that should always be turned on      \G important assertions that should always be turned on
     0 assertn ; immediate      0 assertn ; immediate
 : assert1( ( -- ) \ new  : assert1( ( -- ) \ gforth assert-one
     \G normal assertions; turned on by default      \G normal assertions; turned on by default
     1 assertn ; immediate      1 assertn ; immediate
 : assert2( ( -- ) \ new  : assert2( ( -- ) \ gforth assert-two
     \G debugging assertions      \G debugging assertions
     2 assertn ; immediate      2 assertn ; immediate
 : assert3( ( -- ) \ new  : assert3( ( -- ) \ gforth assert-three
     \G slow assertions that you may not want to turn on in normal debugging;      \G slow assertions that you may not want to turn on in normal debugging;
     \G you would turn them on mainly for thorough checking      \G you would turn them on mainly for thorough checking
     3 assertn ; immediate      3 assertn ; immediate
 : assert( ( -- ) \ new  : assert( ( -- ) \ gforth
     \G equivalent to assert1(      \G equivalent to assert1(
     POSTPONE assert1( ; immediate      POSTPONE assert1( ; immediate
   
 : (endassert) ( flag -- ) \ new  : (endassert) ( flag -- ) \ gforth-internal
     \ three inline arguments      \ three inline arguments
     if      if
         r> 3 cells + >r EXIT          r> 3 cells + >r EXIT
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         true abort" assertion failed" \ !! or use a new throw code?          true abort" assertion failed" \ !! or use a new throw code?
     then ;      then ;
   
 : ) ( -- ) \ new  : ) ( -- ) \ gforth     close-paren
       \G end an assertion
     POSTPONE (endassert) loadfilename 2@ 2, loadline @ , ; immediate      POSTPONE (endassert) loadfilename 2@ 2, loadline @ , ; immediate

Generate output suitable for use with a patch program
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  Added in v.1.4
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