mdw@git.distorted.org.uk Git - ssr/blob - StraySrc/Libraries/Sapphire/bsh/flex.bas

   1 REM Sapphire flex macro library -- © 1994 Straylight
   2
   3 DEF FNflex_test=0
   4
   5 REM --- Support functions ---
   6
   7 DEF FNflex__m(mask$)
   8 LOCAL reg$,sep$,mask%,r%,s%,i%
   9 mask%=0
  10 WHILE FNflex__g(mask$,reg$,sep$)
  11   IF reg$="" THEN ERROR 1,"Expected register, found `"+sep$+"'"
  12   r%=EVAL(reg$)
  13   IF sep$="-" THEN
  14     IF FNflex__g(mask$,reg$,sep$) THEN
  15       IF reg$="" THEN ERROR 1,"Expected register, found `"+sep$+"'"
  16       IF sep$="-" THEN ERROR 1,"Unexpected `-' in register list"
  17       s%=EVAL(reg$)
  18       IF s%<r% THEN SWAP s%,r%
  19       FOR i%=r% TO s%
  20         mask%=mask% OR (1<<i%)
  21       NEXT
  22     ELSE
  23       ERROR 1,"Missing register name"
  24     ENDIF
  25   ELSE
  26     mask%=mask% OR (1<<r%)
  27   ENDIF
  28 ENDWHILE
  29 =mask%
  30
  31 DEF FNflex__g(RETURN mask$,RETURN reg$,RETURN sep$)
  32 IF mask$="" THEN =FALSE
  33 reg$=""
  34 sep$=""
  35 REPEAT
  36   reg$+=sep$
  37   sep$=LEFT$(mask$,1)
  38   mask$=MID$(mask$,2)
  39 UNTIL mask$="" OR INSTR("-,",sep$)
  40 IF INSTR("-,",sep$)=0 THEN
  41   reg$+=sep$
  42   sep$=""
  43 ENDIF
  44 =TRUE
  45
  46 REM --- Macros ---
  47
  48 DEF FNflex_save(r$)
  49 [ opt 4
  50   FNimport("flex_save")
  51   bl flex_save
  52   dcd FNflex__m(r$) OR &e8ae0000
  53 ]
  54 =0
  55
  56 DEF FNflex_load(r$)
  57 [ opt 4
  58   FNimport("flex_load")
  59   bl flex_load
  60   dcd FNflex__m(r$) OR &e93e0000
  61 ]
  62 =0