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Mah-jong in next Egison
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; | |
; Mah-jong example | |
; | |
(define $shuntsu : (PatternConstructor [Hai (Collection Hai)] (Collection Hai)) | |
(pattern-constructor [$pat1 $pat2] | |
<cons (& <num $s $n> pat1) | |
<cons <num ,s ,(+ n 1)> | |
<cons <num ,s ,(+ n 2)> | |
pat2>>>)) | |
(define $kohtsu : (PatternConstructor [Hai (Collection Hai)] (Collection Hai)) | |
(pattern-constructor [$pat1 $pat2] | |
<cons (& $pat pat1) | |
<cons ,pat | |
<cons ,pat | |
pat2>>>)) | |
(define $twin : (PatternConstructor [Hai (Collection Hai)] (Collection Hai)) | |
(pattern-constructor [$pat1 $pat2] | |
<cons (& $pat pat1) | |
<cons ,pat | |
pat2>>)) | |
(define $agari? : (\ (Collection Hai) Bool) | |
(function (multiset hai) | |
{[(twin $th_1 (| (shuntsu $sh_1 (shuntsu $sh_2 (shuntsu $sh_3 (shuntsu $sh_4 <nil>)))) | |
(shuntsu $sh_1 (shuntsu $sh_2 (shuntsu $sh_3 (kohtsu $kh_1 <nil>)))) | |
(shuntsu $sh_1 (shuntsu $sh_2 (kohtsu $kh_1 (kohtsu $kh_2 <nil>)))) | |
(shuntsu $sh_1 (kohtsu $kh_1 (kohtsu $kh_2 (kohtsu $kh_3 <nil>)))) | |
(kohtsu $kh_1 (kohtsu $kh_2 (kohtsu $kh_3 (kohtsu $kh_4 <nil>)))) | |
(twin $th_2 (twin $th_3 (twin $th_4 (twin $th_5 (twin $th_6 (twin $th_7 <nil>)))))) | |
)) | |
#t] | |
[_ | |
#f]})) |
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