File:  [gforth] / gforth / kernel / files.fs
Revision 1.1: download - view: text, annotated - select for diffs
Wed May 21 20:40:14 1997 UTC (26 years, 11 months ago) by anton
Branches: MAIN
CVS tags: HEAD
jwilke's changes:
Moved many files to other directories
renamed many files
other changes unknown to me.

    1: \ File specifiers                                       11jun93jaw
    2: 
    3: \ Copyright (C) 1995-1997 Free Software Foundation, Inc.
    4: 
    5: \ This file is part of Gforth.
    6: 
    7: \ Gforth is free software; you can redistribute it and/or
    8: \ modify it under the terms of the GNU General Public License
    9: \ as published by the Free Software Foundation; either version 2
   10: \ of the License, or (at your option) any later version.
   11: 
   12: \ This program is distributed in the hope that it will be useful,
   13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15: \ GNU General Public License for more details.
   16: 
   17: \ You should have received a copy of the GNU General Public License
   18: \ along with this program; if not, write to the Free Software
   19: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   20: 
   21: 4 Constant w/o ( -- fam ) \ file	w-o
   22: 2 Constant r/w ( -- fam ) \ file	r-w
   23: 0 Constant r/o ( -- fam ) \ file	r-o
   24: 
   25: : bin ( fam1 -- fam2 ) \ file
   26:     1 or ;
   27: 
   28: \ BIN WRITE-LINE                                        11jun93jaw
   29: 
   30: : write-line ( c-addr u fileid -- ior ) \ file
   31:     dup >r write-file
   32:     ?dup IF
   33: 	r> drop EXIT
   34:     THEN
   35:     #lf r> emit-file ;
   36: 
   37: \ include-file                                         07apr93py
   38: 
   39: : push-file  ( -- )  r>
   40:   sourceline# >r  loadfile @ >r
   41:   blk @ >r  tibstack @ >r  >tib @ >r  #tib @ >r
   42:   >tib @ tibstack @ = IF  r@ tibstack +!  THEN
   43:   tibstack @ >tib ! >in @ >r  >r ;
   44: 
   45: : pop-file   ( throw-code -- throw-code )
   46:   dup IF
   47:          source >in @ sourceline# sourcefilename
   48: 	 error-stack dup @ dup 1+
   49: 	 max-errors 1- min error-stack !
   50: 	 6 * cells + cell+
   51: 	 5 cells bounds swap DO
   52: 	                    I !
   53: 	 -1 cells +LOOP
   54:   THEN
   55:   r>
   56:   r> >in !  r> #tib !  r> >tib !  r> tibstack !  r> blk !
   57:   r> loadfile ! r> loadline !  >r ;
   58: 
   59: : read-loop ( i*x -- j*x )
   60:   BEGIN  refill  WHILE  interpret  REPEAT ;
   61: 
   62: : include-file ( i*x fid -- j*x ) \ file
   63:   push-file  loadfile !
   64:   0 loadline ! blk off  ['] read-loop catch
   65:   loadfile @ close-file swap 2dup or
   66:   pop-file  drop throw throw ;
   67: 
   68: \ additional words only needed if there is file support
   69: 
   70: : ( ( compilation 'ccc<close-paren>' -- ; run-time -- ) \ core,file	paren
   71:     loadfile @ 0= IF  postpone (  EXIT  THEN
   72:     BEGIN
   73: 	>in @
   74: 	[char] ) parse nip
   75: 	>in @ rot - = \ is there no delimter?
   76:     WHILE
   77: 	refill 0=
   78: 	IF
   79: 	    warnings @
   80: 	    IF
   81: 		." warning: ')' missing" cr
   82: 	    THEN
   83: 	    EXIT
   84: 	THEN
   85:     REPEAT ; immediate
   86: 

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