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| 1 : | anton | 1.1 | \ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
| 2 : | |||
| 3 : | anton | 1.57 | \ Copyright (C) 1995,1998,2000,2003,2005 Free Software Foundation, Inc. |
| 4 : | anton | 1.12 | |
| 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 : | anton | 1.45 | \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
| 20 : | anton | 1.12 | |
| 21 : | |||
| 22 : | anton | 1.1 | \ May be cross-compiled |
| 23 : | |||
| 24 : | decimal | ||
| 25 : | |||
| 26 : | \ .( 12may93jaw | ||
| 27 : | |||
| 28 : | anton | 1.50 | : .( ( compilation&interpretation "ccc<paren>" -- ) \ core-ext dot-paren |
| 29 : | anton | 1.41 | \G Compilation and interpretation semantics: Parse a string @i{ccc} |
| 30 : | \G delimited by a @code{)} (right parenthesis). Display the | ||
| 31 : | \G string. This is often used to display progress information during | ||
| 32 : | \G compilation; see examples below. | ||
| 33 : | crook | 1.32 | [char] ) parse type ; immediate |
| 34 : | anton | 1.1 | |
| 35 : | \ VALUE 2>R 2R> 2R@ 17may93jaw | ||
| 36 : | |||
| 37 : | anton | 1.3 | \ !! 2value |
| 38 : | anton | 1.1 | |
| 39 : | anton | 1.56 | [ifundef] 2literal |
| 40 : | anton | 1.11 | : 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
| 41 : | crook | 1.36 | \G Compile appropriate code such that, at run-time, cell pair @i{w1, w2} are |
| 42 : | crook | 1.32 | \G placed on the stack. Interpretation semantics are undefined. |
| 43 : | anton | 1.11 | swap postpone Literal postpone Literal ; immediate restrict |
| 44 : | anton | 1.56 | [then] |
| 45 : | pazsan | 1.2 | |
| 46 : | anton | 1.16 | ' drop alias d>s ( d -- n ) \ double d_to_s |
| 47 : | |||
| 48 : | anton | 1.39 | : m*/ ( d1 n2 u3 -- dquot ) \ double m-star-slash |
| 49 : | anton | 1.40 | \G dquot=(d1*n2)/u3, with the intermediate result being triple-precision. |
| 50 : | \G In ANS Forth u3 can only be a positive signed number. | ||
| 51 : | anton | 1.11 | >r s>d >r abs -rot |
| 52 : | s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um* | ||
| 53 : | pazsan | 1.58 | swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod -rot |
| 54 : | r> IF IF 1. d+ THEN dnegate ELSE drop THEN ; | ||
| 55 : | pazsan | 1.4 | |
| 56 : | anton | 1.1 | \ CASE OF ENDOF ENDCASE 17may93jaw |
| 57 : | |||
| 58 : | \ just as described in dpANS5 | ||
| 59 : | |||
| 60 : | anton | 1.11 | 0 CONSTANT case ( compilation -- case-sys ; run-time -- ) \ core-ext |
| 61 : | immediate | ||
| 62 : | anton | 1.1 | |
| 63 : | anton | 1.11 | : of ( compilation -- of-sys ; run-time x1 x2 -- |x1 ) \ core-ext |
| 64 : | \ !! the implementation does not match the stack effect | ||
| 65 : | 1+ >r | ||
| 66 : | postpone over postpone = postpone if postpone drop | ||
| 67 : | r> ; immediate | ||
| 68 : | |||
| 69 : | : endof ( compilation case-sys1 of-sys -- case-sys2 ; run-time -- ) \ core-ext end-of | ||
| 70 : | >r postpone else r> ; immediate | ||
| 71 : | |||
| 72 : | : endcase ( compilation case-sys -- ; run-time x -- ) \ core-ext end-case | ||
| 73 : | postpone drop | ||
| 74 : | 0 ?do postpone then loop ; immediate | ||
| 75 : | anton | 1.1 | |
| 76 : | \ C" 17may93jaw | ||
| 77 : | |||
| 78 : | crook | 1.32 | : C" ( compilation "ccc<quote>" -- ; run-time -- c-addr ) \ core-ext c-quote |
| 79 : | crook | 1.36 | \G Compilation: parse a string @i{ccc} delimited by a @code{"} |
| 80 : | \G (double quote). At run-time, return @i{c-addr} which | ||
| 81 : | \G specifies the counted string @i{ccc}. Interpretation | ||
| 82 : | crook | 1.33 | \G semantics are undefined. |
| 83 : | anton | 1.11 | [char] " parse postpone CLiteral ; immediate restrict |
| 84 : | anton | 1.1 | |
| 85 : | \ [COMPILE] 17may93jaw | ||
| 86 : | |||
| 87 : | anton | 1.11 | : [compile] ( compilation "name" -- ; run-time ? -- ? ) \ core-ext bracket-compile |
| 88 : | anton | 1.37 | comp' drop |
| 89 : | dup [ comp' exit drop ] literal = if | ||
| 90 : | execute \ EXIT has default compilation semantics, perform them | ||
| 91 : | else | ||
| 92 : | compile, | ||
| 93 : | then ; immediate | ||
| 94 : | anton | 1.1 | |
| 95 : | \ CONVERT 17may93jaw | ||
| 96 : | |||
| 97 : | anton | 1.11 | : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext |
| 98 : | crook | 1.34 | \G OBSOLESCENT: superseded by @code{>number}. |
| 99 : | anton | 1.26 | char+ true >number drop ; |
| 100 : | anton | 1.1 | |
| 101 : | \ ERASE 17may93jaw | ||
| 102 : | |||
| 103 : | anton | 1.40 | : erase ( addr u -- ) \ core-ext |
| 104 : | \G Clear all bits in @i{u} aus starting at @i{addr}. | ||
| 105 : | anton | 1.11 | \ !! dependence on "1 chars 1 =" |
| 106 : | ( 0 1 chars um/mod nip ) 0 fill ; | ||
| 107 : | crook | 1.34 | : blank ( c-addr u -- ) \ string |
| 108 : | anton | 1.40 | \G Store the space character into @i{u} chars starting at @i{c-addr}. |
| 109 : | anton | 1.11 | bl fill ; |
| 110 : | anton | 1.1 | |
| 111 : | pazsan | 1.7 | \ SEARCH 02sep94py |
| 112 : | |||
| 113 : | anton | 1.28 | : search ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 flag ) \ string |
| 114 : | crook | 1.36 | \G Search the string specified by @i{c-addr1, u1} for the string |
| 115 : | \G specified by @i{c-addr2, u2}. If @i{flag} is true: match was found | ||
| 116 : | \G at @i{c-addr3} with @i{u3} characters remaining. If @i{flag} is false: | ||
| 117 : | \G no match was found; @i{c-addr3, u3} are equal to @i{c-addr1, u1}. | ||
| 118 : | anton | 1.28 | \ not very efficient; but if we want efficiency, we'll do it as primitive |
| 119 : | 2>r 2dup | ||
| 120 : | begin | ||
| 121 : | dup r@ >= | ||
| 122 : | while | ||
| 123 : | anton | 1.53 | 2dup 2r@ string-prefix? if |
| 124 : | anton | 1.28 | 2swap 2drop 2r> 2drop true exit |
| 125 : | endif | ||
| 126 : | 1 /string | ||
| 127 : | repeat | ||
| 128 : | 2drop 2r> 2drop false ; | ||
| 129 : | pazsan | 1.7 | |
| 130 : | anton | 1.1 | \ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
| 131 : | |||
| 132 : | pazsan | 1.46 | [IFUNDEF] source-id |
| 133 : | anton | 1.22 | : source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d |
| 134 : | crook | 1.34 | \G Return 0 (the input source is the user input device), -1 (the |
| 135 : | \G input source is a string being processed by @code{evaluate}) or | ||
| 136 : | crook | 1.36 | \G a @i{fileid} (the input source is the file specified by |
| 137 : | \G @i{fileid}). | ||
| 138 : | crook | 1.34 | loadfile @ dup 0= IF drop sourceline# 0 min THEN ; |
| 139 : | |||
| 140 : | : save-input ( -- xn .. x1 n ) \ core-ext | ||
| 141 : | crook | 1.36 | \G The @i{n} entries @i{xn - x1} describe the current state of the |
| 142 : | crook | 1.34 | \G input source specification, in some platform-dependent way that can |
| 143 : | \G be used by @code{restore-input}. | ||
| 144 : | anton | 1.14 | >in @ |
| 145 : | loadfile @ | ||
| 146 : | if | ||
| 147 : | pazsan | 1.43 | loadfile @ file-position throw |
| 148 : | [IFDEF] #fill-bytes #fill-bytes @ [ELSE] #tib @ 1+ [THEN] 0 d- | ||
| 149 : | anton | 1.14 | else |
| 150 : | blk @ | ||
| 151 : | linestart @ | ||
| 152 : | then | ||
| 153 : | sourceline# | ||
| 154 : | >tib @ | ||
| 155 : | source-id | ||
| 156 : | 6 ; | ||
| 157 : | anton | 1.1 | |
| 158 : | crook | 1.34 | : restore-input ( xn .. x1 n -- flag ) \ core-ext |
| 159 : | \G Attempt to restore the input source specification to the state | ||
| 160 : | crook | 1.36 | \G described by the @i{n} entries @i{xn - x1}. @i{flag} is |
| 161 : | anton | 1.35 | \G true if the restore fails. In Gforth it fails pretty often |
| 162 : | \G (and sometimes with a @code{throw}). | ||
| 163 : | anton | 1.14 | 6 <> -12 and throw |
| 164 : | source-id <> -12 and throw | ||
| 165 : | >tib ! | ||
| 166 : | >r ( line# ) | ||
| 167 : | loadfile @ 0<> | ||
| 168 : | if | ||
| 169 : | loadfile @ reposition-file throw | ||
| 170 : | anton | 1.38 | refill 0= -36 and throw \ should never throw |
| 171 : | anton | 1.14 | else |
| 172 : | linestart ! | ||
| 173 : | blk ! | ||
| 174 : | sourceline# r@ <> blk @ 0= and loadfile @ 0= and | ||
| 175 : | if | ||
| 176 : | drop rdrop true EXIT | ||
| 177 : | then | ||
| 178 : | then | ||
| 179 : | r> loadline ! | ||
| 180 : | >in ! | ||
| 181 : | false ; | ||
| 182 : | pazsan | 1.46 | [THEN] |
| 183 : | anton | 1.1 | \ This things we don't need, but for being complete... jaw |
| 184 : | |||
| 185 : | \ EXPECT SPAN 17may93jaw | ||
| 186 : | |||
| 187 : | crook | 1.34 | variable span ( -- c-addr ) \ core-ext |
| 188 : | crook | 1.36 | \G @code{Variable} -- @i{c-addr} is the address of a cell that stores the |
| 189 : | \G length of the last string received by @code{expect}. OBSOLESCENT. | ||
| 190 : | crook | 1.34 | |
| 191 : | : expect ( c-addr +n -- ) \ core-ext | ||
| 192 : | crook | 1.36 | \G Receive a string of at most @i{+n} characters, and store it |
| 193 : | \G in memory starting at @i{c-addr}. The string is | ||
| 194 : | crook | 1.34 | \G displayed. Input terminates when the <return> key is pressed or |
| 195 : | crook | 1.36 | \G @i{+n} characters have been received. The normal Gforth line |
| 196 : | crook | 1.34 | \G editing capabilites are available. The length of the string is |
| 197 : | \G stored in @code{span}; it does not include the <return> | ||
| 198 : | \G character. OBSOLESCENT: superceeded by @code{accept}. | ||
| 199 : | anton | 1.9 | 0 rot over |
| 200 : | BEGIN ( maxlen span c-addr pos1 ) | ||
| 201 : | key decode ( maxlen span c-addr pos2 flag ) | ||
| 202 : | >r 2over = r> or | ||
| 203 : | UNTIL | ||
| 204 : | pazsan | 1.17 | 2 pick swap /string type |
| 205 : | nip span ! ; | ||
| 206 : | jwilke | 1.27 | |
| 207 : | \ marker 18dec94py | ||
| 208 : | |||
| 209 : | \ Marker creates a mark that is removed (including everything | ||
| 210 : | \ defined afterwards) when executing the mark. | ||
| 211 : | |||
| 212 : | anton | 1.31 | : included-files-mark ( -- u ) |
| 213 : | included-files 2@ nip | ||
| 214 : | blk @ 0= | ||
| 215 : | if \ not input from blocks | ||
| 216 : | source-id 1 -1 within | ||
| 217 : | if \ input from file | ||
| 218 : | 1- \ do not include the last file (hopefully this is the | ||
| 219 : | \ currently included file) | ||
| 220 : | then | ||
| 221 : | then ; | ||
| 222 : | |||
| 223 : | \ hmm, most of the saving appears to be pretty unnecessary: we could | ||
| 224 : | \ derive the wordlists and the words that have to be kept from the | ||
| 225 : | \ saved value of dp value. - anton | ||
| 226 : | |||
| 227 : | : marker, ( -- mark ) | ||
| 228 : | here | ||
| 229 : | included-files-mark , | ||
| 230 : | dup A, \ here | ||
| 231 : | voclink @ A, \ vocabulary list start | ||
| 232 : | \ for all wordlists, remember wordlist-id (the linked list) | ||
| 233 : | voclink | ||
| 234 : | BEGIN | ||
| 235 : | @ dup | ||
| 236 : | WHILE | ||
| 237 : | dup 0 wordlist-link - wordlist-id @ A, | ||
| 238 : | REPEAT | ||
| 239 : | drop | ||
| 240 : | \ remember udp | ||
| 241 : | anton | 1.48 | udp @ , |
| 242 : | \ remember dyncode-ptr | ||
| 243 : | here ['] noop , compile-prim1 finish-code ; | ||
| 244 : | jwilke | 1.27 | |
| 245 : | : marker! ( mark -- ) | ||
| 246 : | anton | 1.31 | \ reset included files count; resize will happen on next add-included-file |
| 247 : | included-files 2@ drop over @ included-files 2! cell+ | ||
| 248 : | \ rest of marker! | ||
| 249 : | dup @ swap cell+ ( here rest-of-marker ) | ||
| 250 : | jwilke | 1.27 | dup @ voclink ! cell+ |
| 251 : | anton | 1.31 | \ restore wordlists to former words |
| 252 : | jwilke | 1.27 | voclink |
| 253 : | BEGIN | ||
| 254 : | @ dup | ||
| 255 : | WHILE | ||
| 256 : | anton | 1.31 | over @ over 0 wordlist-link - wordlist-id ! |
| 257 : | jwilke | 1.27 | swap cell+ swap |
| 258 : | REPEAT | ||
| 259 : | anton | 1.31 | drop |
| 260 : | \ rehash wordlists to remove forgotten words | ||
| 261 : | \ why don't we do this in a single step? - anton | ||
| 262 : | voclink | ||
| 263 : | jwilke | 1.27 | BEGIN |
| 264 : | @ dup | ||
| 265 : | WHILE | ||
| 266 : | dup 0 wordlist-link - rehash | ||
| 267 : | REPEAT | ||
| 268 : | drop | ||
| 269 : | anton | 1.31 | \ restore udp and dp |
| 270 : | pazsan | 1.49 | [IFDEF] forget-dyncode |
| 271 : | anton | 1.54 | dup cell+ @ forget-dyncode drop |
| 272 : | pazsan | 1.49 | [THEN] |
| 273 : | pazsan | 1.29 | @ udp ! dp ! |
| 274 : | \ clean up vocabulary stack | ||
| 275 : | 0 vp @ 0 | ||
| 276 : | ?DO | ||
| 277 : | vp cell+ I cells + @ dup here > | ||
| 278 : | IF drop ELSE swap 1+ THEN | ||
| 279 : | LOOP | ||
| 280 : | dup 0= or set-order \ -1 set-order if order is empty | ||
| 281 : | get-current here > IF | ||
| 282 : | forth-wordlist set-current | ||
| 283 : | THEN ; | ||
| 284 : | jwilke | 1.27 | |
| 285 : | crook | 1.32 | : marker ( "<spaces> name" -- ) \ core-ext |
| 286 : | crook | 1.36 | \G Create a definition, @i{name} (called a @i{mark}) whose |
| 287 : | crook | 1.32 | \G execution semantics are to remove itself and everything |
| 288 : | \G defined after it. | ||
| 289 : | jwilke | 1.27 | marker, Create A, |
| 290 : | DOES> ( -- ) | ||
| 291 : | @ marker! ; | ||
| 292 : | anton | 1.1 |
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