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Diff for /gforth/extend.fs between versions 1.31 and 1.33

version 1.31, 1998/12/19 13:43:17 version 1.33, 1999/03/23 20:24:18
Line 25  decimal Line 25  decimal
   
 \ .(                                                    12may93jaw  \ .(                                                    12may93jaw
   
 : .(   ( compilation "...<paren>" -- ) \ core-ext dot-paren  : .(   ( "ccc<paren>" -- ) \ core-ext dot-paren
     [char] ) parse type ; immediate    \G Parse a string @var{ccc} delimited by a @code{)} (right
     \G parenthesis). Display the string. This is often used to display
     \G progress information during compilation; see examples below.
     [char] ) parse type ; immediate
   
 \ VALUE 2>R 2R> 2R@                                     17may93jaw  \ VALUE 2>R 2R> 2R@                                     17may93jaw
   
 \ !! 2value  \ !! 2value
   
 : 2Literal ( compilation w1 w2 -- ; run-time  -- w1 w2 ) \ double two-literal  : 2Literal ( compilation w1 w2 -- ; run-time  -- w1 w2 ) \ double two-literal
       \G Compile appropriate code such that, at run-time, cell pair @var{w1, w2} are
       \G placed on the stack. Interpretation semantics are undefined.
     swap postpone Literal  postpone Literal ; immediate restrict      swap postpone Literal  postpone Literal ; immediate restrict
   
 ' drop alias d>s ( d -- n ) \ double            d_to_s  ' drop alias d>s ( d -- n ) \ double            d_to_s
Line 70  decimal Line 75  decimal
 : CLiteral  : CLiteral
     postpone (c") here over char+ allot  place align ; immediate restrict      postpone (c") here over char+ allot  place align ; immediate restrict
   
 : C" ( compilation "...<quote>" -- ; run-time  -- c-addr ) \ core-ext c-quote  : C" ( compilation "ccc<quote>" -- ; run-time  -- c-addr ) \ core-ext c-quote
       \G Compilation: parse a string @var{ccc} delimited by a @code{"}
       \G (double quote). At run-time, return @var{c-addr} which
       \G specifies the counted string @var{ccc}.  Interpretation
       \G semantics are undefined.
     [char] " parse postpone CLiteral ; immediate restrict      [char] " parse postpone CLiteral ; immediate restrict
   
 \ [COMPILE]                                             17may93jaw  \ [COMPILE]                                             17may93jaw
Line 81  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
   
 : erase ( addr len -- ) \ core-ext  : erase ( addr len -- ) \ core-ext
       \G If @var{len}>0, clear all bits in each location of a memory region
       \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 ( addr len -- ) \ string
       \G If @var{len}>0, store the character value for a space in each
       \G location of a memory region
       \G of @var{len} character units starting at address @var{addr}.
     bl fill ;      bl fill ;
   
 \ SEARCH                                                02sep94py  \ SEARCH                                                02sep94py
   
 : search ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 flag ) \ string  : search ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 flag ) \ string
       \G Search the string specified by @var{c-addr1, u1} for the string
       \G specified by @var{c-addr2, u2}. If @var{flag} is true: match was found
       \G at @var{c-addr3} with @var{u3} characters remaining. If @var{flag} is false:
       \G no match was found; @var{c-addr3, u3} are equal to @var{c-addr1, u1}.
     \ not very efficient; but if we want efficiency, we'll do it as primitive      \ not very efficient; but if we want efficiency, we'll do it as primitive
     2>r 2dup      2>r 2dup
     begin      begin
Line 236  variable span ( -- a-addr ) \ core-ext Line 254  variable span ( -- a-addr ) \ core-ext
         forth-wordlist set-current          forth-wordlist set-current
     THEN ;      THEN ;
   
 : marker ( "mark" -- )  : marker ( "<spaces> name" -- ) \ core-ext
       \G Create a definition, @var{name} (called a @var{mark}) whose
       \G execution semantics are to remove itself and everything 
       \G defined after it.
     marker, Create A,      marker, Create A,
 DOES> ( -- )  DOES> ( -- )
     @ marker! ;      @ marker! ;
Removed from v.1.31  
changed lines
  Added in v.1.33

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