Diff for /gforth/extend.fs between versions 1.33 and 1.35

version 1.33, 1999/03/23 20:24:18 version 1.35, 1999/05/21 20:35:35
Line 90  decimal Line 90  decimal
 \ CONVERT                                               17may93jaw  \ CONVERT                                               17may93jaw
   
 : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext  : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext
     \G OBSOLESCENT; superseded by @code{>number}.      \G OBSOLESCENT: superseded by @code{>number}.
     char+ true >number drop ;      char+ true >number drop ;
   
 \ ERASE                                                 17may93jaw  \ ERASE                                                 17may93jaw
Line 100  decimal Line 100  decimal
     \G of @var{len} address units starting at address @var{addr}.      \G of @var{len} address units starting at address @var{addr}.
     \ !! dependence on "1 chars 1 ="      \ !! dependence on "1 chars 1 ="
     ( 0 1 chars um/mod nip )  0 fill ;      ( 0 1 chars um/mod nip )  0 fill ;
 : blank ( addr len -- ) \ string  : blank ( c-addr u -- ) \ string
     \G If @var{len}>0, store the character value for a space in each      \G If @var{u}>0, store the character value for a space in each
     \G location of a memory region      \G location of a memory region
     \G of @var{len} character units starting at address @var{addr}.      \G of @var{u} character units starting at address @var{c-addr}.
     bl fill ;      bl fill ;
   
 \ SEARCH                                                02sep94py  \ SEARCH                                                02sep94py
Line 128  decimal Line 128  decimal
 \ SOURCE-ID SAVE-INPUT RESTORE-INPUT                    11jun93jaw  \ SOURCE-ID SAVE-INPUT RESTORE-INPUT                    11jun93jaw
   
 : source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d  : source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d
   loadfile @ dup 0= IF  drop sourceline# 0 min  THEN ;      \G Return 0 (the input source is the user input device), -1 (the
       \G input source is a string being processed by @code{evaluate}) or
 : save-input ( -- x1 .. xn n ) \ core-ext      \G a @var{fileid} (the input source is the file specified by
       \G @var{fileid}).
       loadfile @ dup 0= IF  drop sourceline# 0 min  THEN ;
   
   : save-input ( -- xn .. x1 n ) \ core-ext
       \G The @var{n} entries @var{xn - x1} describe the current state of the
       \G input source specification, in some platform-dependent way that can
       \G be used by @code{restore-input}.
     >in @      >in @
     loadfile @      loadfile @
     if      if
Line 144  decimal Line 151  decimal
     source-id      source-id
     6 ;      6 ;
   
 : restore-input ( x1 .. xn n -- flag ) \ core-ext  : restore-input ( xn .. x1 n -- flag ) \ core-ext
       \G Attempt to restore the input source specification to the state
       \G described by the @var{n} entries @var{xn - x1}. @var{flag} is
       \G true if the restore fails.  In Gforth it fails pretty often
       \G (and sometimes with a @code{throw}).
     6 <> -12 and throw      6 <> -12 and throw
     source-id <> -12 and throw      source-id <> -12 and throw
     >tib !      >tib !
Line 168  decimal Line 179  decimal
   
 \ EXPECT SPAN                                           17may93jaw  \ EXPECT SPAN                                           17may93jaw
   
 variable span ( -- a-addr ) \ core-ext  variable span ( -- c-addr ) \ core-ext
 \ obsolescent  \ VARIABLE: @var{c-addr} is the address of a cell that stores the
   \ length of the last string received by @code{expect}. OBSOLESCENT.
 : expect ( c-addr +len -- ) \ core-ext  
     \ obsolescent; use accept  : expect ( c-addr +n -- ) \ core-ext
       \G Receive a string of at most @var{+n} characters, and store it
       \G in memory starting at @var{c-addr}. The string is
       \G displayed. Input terminates when the <return> key is pressed or
       \G @var{+n} characters have been received. The normal Gforth line
       \G editing capabilites are available. The length of the string is
       \G stored in @code{span}; it does not include the <return>
       \G character. OBSOLESCENT: superceeded by @code{accept}.
     0 rot over      0 rot over
     BEGIN ( maxlen span c-addr pos1 )      BEGIN ( maxlen span c-addr pos1 )
         key decode ( maxlen span c-addr pos2 flag )          key decode ( maxlen span c-addr pos2 flag )

Removed from v.1.33  
changed lines
  Added in v.1.35


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