--- gforth/wordinfo.fs 1995/10/07 17:38:21 1.7 +++ gforth/wordinfo.fs 2003/01/19 23:35:30 1.24 @@ -1,58 +1,77 @@ \ WORDINFO.FS V1.0 17may93jaw +\ Copyright (C) 1995-2003 Free Software Foundation, Inc. + +\ This file is part of Gforth. + +\ Gforth is free software; you can redistribute it and/or +\ modify it under the terms of the GNU General Public License +\ as published by the Free Software Foundation; either version 2 +\ of the License, or (at your option) any later version. + +\ This program is distributed in the hope that it will be useful, +\ but WITHOUT ANY WARRANTY; without even the implied warranty of +\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +\ GNU General Public License for more details. + +\ You should have received a copy of the GNU General Public License +\ along with this program; if not, write to the Free Software +\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. + \ May be cross-compiled \ If you want check values then exclude comments, \ but keep in mind that this can't be cross-compiled -INCLUDE look.fs +require look.fs \ Wordinfo is a tool that checks a nfa \ and finds out what wordtype we have \ it is used in SEE.FS -: alias? ( nfa -- flag ) - dup name> look - 0= ABORT" WINFO: CFA not found" -\ cell+ - 2dup <> - IF nip dup 1 cells - here ! - count $1f and here cell+ place true - ELSE 2drop false THEN ; +\ the old alias? did not work and it is not used, so I changed +\ it in many respects - anton +: alias? ( nfa1 -- nfa2|0 ) + \ if nfa1 is an alias, nfa2 is the name of the original word. + \ if the original word has no name, return 0. + dup cell+ @ alias-mask and 0= + IF ( nfa1 ) + ((name>)) @ >name + ELSE + drop 0 + THEN ; : var? ( nfa -- flag ) - cell+ (name>) >code-address dovar: = ; + ((name>)) >code-address dovar: = ; : con? ( nfa -- flag ) - cell+ (name>) >code-address docon: = ; + ((name>)) >code-address docon: = ; : user? ( nfa -- flag ) - cell+ (name>) >code-address douser: = ; + ((name>)) >code-address douser: = ; : does? ( nfa -- flag ) - \ !! does not work on all installations - cell+ (name>) - >code-address ['] bits >code-address = ; + ((name>)) + >does-code 0<> ; : defered? ( nfa -- flag ) - cell+ (name>) >code-address dodefer: = ; + ((name>)) >code-address dodefer: = ; : colon? ( nfa -- flag ) - cell+ (name>) >code-address docol: = ; + ((name>)) >code-address docol: = ; \ the above words could be factored with create-does>, but this would \ probably make this file incompatible with cross. -\ VALUE VCheck - -\ : value? ( nfa -- flag ) -\ dup does? -\ IF here @ ['] VCheck cell+ @ = -\ dup IF swap (name>) >body @ here ! ELSE nip THEN -\ ELSE drop false THEN ; - +[IFDEF] forthstart +: xtprim? ( xt -- flag ) + in-dictionary? 0= ; \ !! does not work for CODE words +[ELSE] +: xtprim? ( xt -- flag ) + dup >body swap >code-address = ; \ !! works only for indirect threaded code + \ !! does not work for primitives +[THEN] : prim? ( nfa -- flag ) - name> - forthstart u< ; + name>int xtprim? ; \ None nestable IDs: