version 1.5, 2003/03/09 15:17:05
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version 1.10, 2007/12/31 18:40:26
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\ Structural Conditionals, loops part 12dec92py |
\ Structural Conditionals, loops part 12dec92py |
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\ Copyright (C) 1995,1996,1997,1999,2001 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1996,1997,1999,2001,2003,2006 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
\ Gforth is free software; you can redistribute it and/or |
\ modify it under the terms of the GNU General Public License |
\ modify it under the terms of the GNU General Public License |
\ as published by the Free Software Foundation; either version 2 |
\ as published by the Free Software Foundation, either version 3 |
\ of the License, or (at your option) any later version. |
\ of the License, or (at your option) any later version. |
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\ This program is distributed in the hope that it will be useful, |
\ This program is distributed in the hope that it will be useful, |
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\ GNU General Public License for more details. |
\ GNU General Public License for more details. |
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\ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
\ along with this program; if not, write to the Free Software |
\ along with this program. If not, see http://www.gnu.org/licenses/. |
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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\ Structural Conditionals 12dec92py |
\ Structural Conditionals 12dec92py |
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Variable leavings |
\ this works with flash |
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: (leave) here leavings @ , leavings ! ; |
: (leave) -1 , ; |
: LEAVE postpone branch (leave) ; immediate restrict |
: LEAVE postpone branch (leave) ; immediate restrict |
: ?LEAVE postpone 0= postpone ?branch (leave) ; |
: ?LEAVE postpone 0= postpone ?branch (leave) ; |
immediate restrict |
immediate restrict |
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: DONE ( addr -- ) leavings @ |
: DONE ( addr -- ) here swap ?DO |
BEGIN 2dup u<= WHILE dup @ swap >resolve REPEAT |
I @ ['] branch = I @ ['] ?branch = or I @ ['] (?do) = or |
leavings ! drop ; immediate restrict |
I cell+ @ -1 = and IF I cell+ >resolve THEN |
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cell +LOOP ; immediate restrict |
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\ Structural Conditionals 12dec92py |
\ Structural Conditionals 12dec92py |
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