File:  [gforth] / gforth / quotedstring.fs
Revision 1.3: download - view: text, annotated - select for diffs
Sun Jun 24 22:02:03 2012 UTC (5 years, 5 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Commented dot-quote recognizer out, as it is a little bit problematic

\ Quoted string recognizer

\ Copyright (C) 2012 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 3
\ 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, see http://www.gnu.org/licenses/.

: slit,  postpone sliteral ;

' noop ' slit, dup recognizer: r:string

: string-recognizer ( addr u -- addr u' r:string | addr u r:fail )
    2dup s\" \"" string-prefix?
    IF    drop source drop - 1+ >in !  \"-parse save-mem r:string
    ELSE  r:fail  THEN ;

' string-recognizer
forth-recognizer get-recognizers
1+ forth-recognizer set-recognizers

0 [IF] \ dot-quoted strings, we don't need them
: slit.  slit, postpone type ;

' type ' slit. ' slit, recognizer: r:."

: ."-recognizer  ( addr u -- addr u' r:." | addr u r:fail )
    2dup ".\"" string-prefix?
    IF    drop source drop - 2 + >in !  \"-parse save-mem r:."
    ELSE  r:fail  THEN ;

' ."-recognizer
forth-recognizer get-recognizers
1+ forth-recognizer set-recognizers
[THEN]

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