Annotation of gforth/kernel/special.fs, revision 1.7
1.1 anton 1: \ words with non-default and non-immediate compilation semantics
2:
1.6 anton 3: \ Copyright (C) 1996,1998 Free Software Foundation, Inc.
1.1 anton 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: \ this file comes last, because these words override cross' words.
22:
23: create s"-buffer /line chars allot
1.5 pazsan 24: has? compiler 0=
1.4 jwilke 25: [IF] : s" [ELSE] :noname [THEN]
26: [char] " parse
27: /line min >r s"-buffer r@ cmove
28: s"-buffer r> ;
1.5 pazsan 29: has? compiler [IF]
1.4 jwilke 30: :noname [char] " parse postpone SLiteral ;
1.1 anton 31: interpret/compile: S" ( compilation 'ccc"' -- ; run-time -- c-addr u ) \ core,file s-quote
1.7 ! crook 32: \G Compilation: Parse a string ccc delimited by a " (double quote). At run-time,
! 33: \G return the length, u, and the start address, c-addr of the string. Interpretation:
! 34: \G parse the string as before, and return c-addr, u. The string is stored in a
! 35: \G temporary buffer which may be overwritten by subsequent uses of @code{S"}.
1.4 jwilke 36: [THEN]
1.1 anton 37:
1.5 pazsan 38: has? compiler [IF]
1.2 anton 39: : [IS] ( compilation "name" -- ; run-time xt -- ) \ possibly-gforth bracket-is
40: ' >body postpone ALiteral postpone ! ; immediate restrict
41:
1.1 anton 42: :noname ' >body ! ;
1.2 anton 43: ' [IS]
1.1 anton 44: interpret/compile: IS ( addr "name" -- ) \ gforth
45:
46: :noname ' >body @ ;
47: :noname ' >body postpone ALiteral postpone @ ;
48: interpret/compile: What's ( "name" -- addr ) \ gforth
49:
50: :noname [char] " parse type ;
51: :noname postpone (.") ," align ;
52: interpret/compile: ." ( compilation 'ccc"' -- ; run-time -- ) \ core dot-quote
1.7 ! crook 53: \G Compilation: Parse a string ccc delimited by a " (double quote). At run-time,
! 54: \G display the string. Interpretation semantics for this word are undefined in
! 55: \G the ANS Forth Standard. Gforth's interpretation semantics are to display the
! 56: \G string. This is the simplest way to display a string from
! 57: \G within a definition; see examples below.
1.1 anton 58:
59: \ DOES> 17mar93py
60:
61: :noname
62: dodoes, here !does ]
63: defstart :-hook ;
64: :noname
65: ;-hook postpone (does>) ?struc dodoes,
66: defstart :-hook ;
67: interpret/compile: DOES> ( compilation colon-sys1 -- colon-sys2 ; run-time nest-sys -- ) \ core does
68:
69: ' IS Alias TO ( addr "name" -- ) \ core-ext
70: immediate
71:
1.4 jwilke 72: [THEN]
1.1 anton 73:
1.5 pazsan 74: has? compiler [IF]
1.3 jwilke 75: : interpret/compile? ( xt -- flag )
76: >does-code ['] S" >does-code = ;
1.5 pazsan 77: [ELSE]
78: : interpret/compile?
79: false ;
80: [THEN]
1.3 jwilke 81:
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