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Diff for /gforth/kernel/cond.fs between versions 1.11 and 1.20

version 1.11, 2001/02/24 17:24:45 version 1.20, 2007/10/29 15:56:31
Line 1 Line 1
 \ Structural Conditionals                              12dec92py  \ Structural Conditionals                              12dec92py
   
 \ Copyright (C) 1995,1996,1997,2000 Free Software Foundation, Inc.  \ Copyright (C) 1995,1996,1997,2000,2003,2004 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 105  variable backedge-locals Line 105  variable backedge-locals
   
 \ Structural Conditionals                              12dec92py  \ Structural Conditionals                              12dec92py
   
   defer other-control-flow ( -- )
   \ hook for control-flow stuff that's not handled by begin-like etc.
   
 : ?struc      ( flag -- )       abort" unstructured " ;  : ?struc      ( flag -- )       abort" unstructured " ;
 : sys?        ( sys -- )        dup 0= ?struc ;  : sys?        ( sys -- )        dup 0= ?struc ;
 : >mark ( -- orig )  : >mark ( -- orig )
  cs-push-orig 0 , ;   cs-push-orig 0 , other-control-flow ;
 : >resolve    ( addr -- )  : >resolve    ( addr -- )
     here over - swap !      here swap !
     0 last-compiled ! ;      basic-block-end ;
 : <resolve    ( addr -- )        here - , ;  : <resolve    ( addr -- )        , ;
   
 : BUT  : BUT
     1 cs-roll ;                      immediate restrict      1 cs-roll ;                      immediate restrict
Line 148  immediate restrict Line 151  immediate restrict
 \ people who have not been brought up with Forth (or who have been  \ people who have not been brought up with Forth (or who have been
 \ brought up with fig-Forth).  \ brought up with fig-Forth).
   
 : ELSE ( compilation orig1 -- orig2 ; run-time f -- ) \ core  : ELSE ( compilation orig1 -- orig2 ; run-time -- ) \ core
     POSTPONE ahead      POSTPONE ahead
     1 cs-roll      1 cs-roll
     POSTPONE then ; immediate restrict      POSTPONE then ; immediate restrict
Line 158  Defer begin-like ( -- ) Line 161  Defer begin-like ( -- )
   
 : BEGIN ( compilation -- dest ; run-time -- ) \ core  : BEGIN ( compilation -- dest ; run-time -- ) \ core
     begin-like cs-push-part dest      begin-like cs-push-part dest
     0 last-compiled ! ; immediate restrict      basic-block-end ; immediate restrict
   
 Defer again-like ( dest -- addr )  Defer again-like ( dest -- addr )
 ' nip IS again-like  ' nip IS again-like
Line 302  Defer exit-like ( -- ) Line 305  Defer exit-like ( -- )
 ' noop IS exit-like  ' noop IS exit-like
   
 : EXIT ( compilation -- ; run-time nest-sys -- ) \ core  : EXIT ( compilation -- ; run-time nest-sys -- ) \ core
     \G Return to the calling definition; usually used as a way of  \G Return to the calling definition; usually used as a way of
     \G forcing an early return from a definition. Before  \G forcing an early return from a definition. Before
     \G @code{EXIT}ing you must clean up the return stack and  \G @code{EXIT}ing you must clean up the return stack and
     \G @code{UNLOOP} any outstanding @code{?DO}...@code{LOOP}s.  \G @code{UNLOOP} any outstanding @code{?DO}...@code{LOOP}s.
     exit-like      exit-like
     POSTPONE ;s      POSTPONE ;s
       basic-block-end
     POSTPONE unreachable ; immediate restrict      POSTPONE unreachable ; immediate restrict
   
 : ?EXIT ( -- ) ( compilation -- ; run-time nest-sys f -- | nest-sys ) \ gforth  : ?EXIT ( -- ) ( compilation -- ; run-time nest-sys f -- | nest-sys ) \ gforth
Removed from v.1.11  
changed lines
  Added in v.1.20

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