From 67d25d837ac55f28a366c0a3b262e439a6e75fc3 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Sat, 19 Aug 2017 12:15:28 +0200 Subject: Add AmForth --- amforth-6.5/common/lib/forth2012/string/search.frt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 amforth-6.5/common/lib/forth2012/string/search.frt (limited to 'amforth-6.5/common/lib/forth2012/string/search.frt') diff --git a/amforth-6.5/common/lib/forth2012/string/search.frt b/amforth-6.5/common/lib/forth2012/string/search.frt new file mode 100644 index 0000000..36c0339 --- /dev/null +++ b/amforth-6.5/common/lib/forth2012/string/search.frt @@ -0,0 +1,23 @@ + +\ mostly from gforth. Minor modifications however.. + +: str= ( c-addr1 u1 c-addr2 u2 -- f ) \ gforth + compare 0= ; + +: string-prefix? ( c-addr1 u1 c-addr2 u2 -- f ) \ gforth + \ Is c-addr2 u2 a prefix of c-addr1 u1 ? + tuck 2>r min 2r> str= ; + +: >= < 0= ; + +: search ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 flag ) \ string + 2>r 2dup + begin + dup r@ >= \ 2r@ nip >= + while + 2dup 2r@ string-prefix? if + 2swap 2drop 2r> 2drop true exit + then + 1 /string + repeat + 2drop 2r> 2drop 0 ; -- cgit v1.2.3