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version 1.15, 2003/01/19 23:35:34
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version 1.25, 2011/08/19 17:57:56
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| \ Structural Conditionals 12dec92py |
\ Structural Conditionals 12dec92py |
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| \ Copyright (C) 1995-2003 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1996,1997,2000,2003,2004,2007,2010 Free Software Foundation, Inc. |
| |
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| \ This file is part of Gforth. |
\ This file is part of Gforth. |
| |
|
| \ 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. |
| |
|
| \ 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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| |
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| here 0 , \ just a dummy, the real value of locals-list is patched into it in glocals.fs |
here 0 , \ just a dummy, the real value of locals-list is patched into it in glocals.fs |
| AConstant locals-list \ acts like a variable that contains |
AConstant locals-list \ acts like a variable that contains |
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Line 92 variable backedge-locals
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Line 91 variable backedge-locals
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| rdrop |
rdrop |
| dup cs-item? ; |
dup cs-item? ; |
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: CS-DROP ( dest -- ) \ gforth |
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dest? 2drop ; |
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| : cs-push-part ( -- list addr ) |
: cs-push-part ( -- list addr ) |
| locals-list @ here ; |
locals-list @ here ; |
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Line 105 variable backedge-locals
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Line 107 variable backedge-locals
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| \ Structural Conditionals 12dec92py |
\ Structural Conditionals 12dec92py |
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defer other-control-flow ( -- ) |
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\ hook for control-flow stuff that's not handled by begin-like etc. |
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| : ?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 swap ! |
here swap ! |
| basic-block-end ; |
basic-block-end ; |
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Line 148 immediate restrict
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Line 153 immediate restrict
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| \ 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). |
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| : 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 |
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Line 222 Avariable leave-sp leave-stack 3 cells
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Line 227 Avariable leave-sp leave-stack 3 cells
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| leave-sp ! ; |
leave-sp ! ; |
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| : DONE ( compilation orig -- ; run-time -- ) \ gforth |
: DONE ( compilation orig -- ; run-time -- ) \ gforth |
| \ !! the original done had ( addr -- ) |
\g resolves all LEAVEs up to the compilaton orig (from a BEGIN) |
| drop >r drop |
drop >r drop |
| begin |
begin |
| leave> |
leave> |
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