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stuff.fs
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Mon Nov 13 22:10:30 2000 UTC (23 years, 5 months ago) by
anton
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make bindist now makes sunsite-compliant package names
updated lsm
prims2x now works on the Alpha
SEE now displays anonymous words as <###> (where ### is the xt)
added CONST-DOES>
1: \ miscelleneous words
2:
3: \ Copyright (C) 1996,1997,1998,2000 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21: require glocals.fs
22:
23: ' require alias needs ( ... "name" -- ... ) \ gforth
24: \G An alias for @code{require}; exists on other systems (e.g., Win32Forth).
25: \ needs is an F-PC name. we will probably switch to 'needs' in the future
26:
27: \ a little more compiler security
28:
29: \ currently not used by Gforth, but maybe by add-ons e.g., the 486asm
30: AUser CSP
31:
32: : !CSP ( -- )
33: sp@ csp ! ;
34:
35: : ?CSP ( -- )
36: sp@ csp @ <> -22 and throw ;
37:
38: \ DMIN and DMAX
39:
40: : dmin ( d1 d2 -- d ) \ double d-min
41: 2over 2over d> IF 2swap THEN 2drop ;
42:
43:
44: : dmax ( d1 d2 -- d ) \ double d-max
45: 2over 2over d< IF 2swap THEN 2drop ;
46:
47: \ shell commands
48:
49: 0 Value $? ( -- n ) \ gforth dollar-question
50: \G @code{Value} -- the exit status returned by the most recently executed
51: \G @code{system} command.
52:
53: : system ( c-addr u -- ) \ gforth
54: \G Pass the string specified by @var{c-addr u} to the host operating system
55: \G for execution in a sub-shell.
56: (system) throw TO $? ;
57:
58: : sh ( "..." -- ) \ gforth
59: \G Parse a string and use @code{system} to pass it to the host
60: \G operating system for execution in a sub-shell.
61: '# parse cr system ;
62:
63: \ stuff
64:
65: : ]L ( compilation: n -- ; run-time: -- n ) \ gforth
66: \G equivalent to @code{] literal}
67: ] postpone literal ;
68:
69: : in-dictionary? ( x -- f )
70: forthstart dictionary-end within ;
71:
72: : in-return-stack? ( addr -- f )
73: rp0 @ swap - [ forthstart 6 cells + ]L @ u< ;
74:
75: \ const-does>
76:
77: : compile-literals ( w*u u -- ; run-time: -- w*u ) recursive
78: ?dup-if
79: swap >r 1- compile-literals
80: r> POSTPONE literal
81: endif ;
82:
83: : compile-fliterals ( r*u u -- ; run-time: -- w*u ) recursive
84: ?dup-if
85: { F: r } 1- compile-fliterals
86: r POSTPONE fliteral
87: endif ;
88:
89: : (const-does>) ( w*uw r*ur uw ur target "name" -- )
90: { uw ur target }
91: header docol: cfa, \ start colon def without stack junk
92: ur compile-fliterals uw compile-literals
93: target compile, POSTPONE exit reveal ;
94:
95: : const-does> ( run-time: w*uw r*ur uw ur "name" -- )
96: here >r 0 POSTPONE literal
97: POSTPONE (const-does>)
98: POSTPONE ;
99: noname : POSTPONE rdrop
100: lastxt r> cell+ ! \ patch the literal
101: ; immediate
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