Created
January 3, 2010 02:07
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( tokens in a linked list ) | |
variable last | |
: new ( "- ) 32 accept ( "- Get a little text ) | |
tib keepString ( -$ Make a permanent string of it ) | |
here last @ , last ! ( - Link in last, set the pointer as the new last ) | |
, ; ( $- compile in the text address after the link ) | |
: access ( a-$ ) 1+ @ ; ( a-$ From the link, go to string pointer and access it ) | |
: next ( a-a ) | |
dup access type @ ; ( a-a Type the text by the current link, follow the link. ) | |
new first | |
new second | |
new third | |
new fourth | |
last @ next |
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( Based on code from http://gist.github.com/267828 ) | |
( character addressing versions ) | |
: c!+ ( na-a ) dup 1+ >r c! r> ; | |
: c@+ ( a-an ) dup 1+ swap c@ ; | |
( cell addressing versions ) | |
: !+ ( na-a ) dup cell+ >r ! r> ; | |
: @+ ( a-an ) dup cell+ swap @ ; | |
( Read text input ) | |
create tib 512 allot | |
variable break | |
: accept ( c- ) break ! tib repeat key dup break @ =if drop 0 swap ! ;then swap c!+ again ; | |
( Get the length of a string ) | |
: getLength ( $-n ) 0 swap repeat c@+ 0 =if drop ;then swap 1+ swap again ; | |
( Store a string somewhere permanently and return a reference to it ) | |
create strings 8192 allot | |
variable str strings str ! | |
: keepString ( $-$ ) | |
str @ swap dup getLength 0 do c@+ str @ c! str ++ loop drop 0 str @ c! str ++ ; | |
( Display a string ) | |
: type repeat c@+ dup 0 =if 2drop ;then emit again ; | |
( Clean up ) | |
hide break | |
hide strings | |
hide str | |
( tokens in a linked list ) | |
variable last | |
: new ( "- ) 32 accept ( "- Get a little text ) | |
tib keepString ( -$ Make a permanent string of it ) | |
here last @ , last ! ( - Link in last, set the pointer as the new last ) | |
, ; ( $- compile in the text address after the link ) | |
: access ( a-$ ) cell+ @ ; ( a-$ From the link, go to string pointer and access it ) | |
: next ( a-a ) | |
dup access type @ ; ( a-a Type the text by the current link, follow the link. ) | |
new | |
first | |
new | |
second | |
new | |
third | |
new | |
fourth | |
last @ next |
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