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Diff for /gforth/extend.fs between versions 1.31 and 1.32

version 1.31, 1998/12/19 13:43:17 version 1.32, 1999/02/03 00:10:20
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 ccc delimited by a ) (right parenthesis). Display
     \G the string. This is often used to display progress information
     \G 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 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 ccc delimited by a " (double quote). At
       \G run-time, return c-addr which specifies the counted string ccc.
       \G Interpretation semantics are undefined.
     [char] " parse postpone CLiteral ; immediate restrict      [char] " parse postpone CLiteral ; immediate restrict
   
 \ [COMPILE]                                             17may93jaw  \ [COMPILE]                                             17may93jaw
Line 87  decimal Line 95  decimal
 \ ERASE                                                 17may93jaw  \ ERASE                                                 17may93jaw
   
 : erase ( addr len -- ) \ core-ext  : erase ( addr len -- ) \ core-ext
       \G If len>0, clear all bits in each location of a memory region
       \G of len address units starting at address 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 len>0, store the character value for a space in each
       \G location of a memory region
       \G of len character units starting at address 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 c-addr1, u1 for the string
       \G speficied by c-addr2, u2. If flag is true: match was found
       \G at c-addr3 with u3 characters remaining. If flag is false:
       \G no match was found; c-addr3, u3 are equal to 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 253  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.1.32

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