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自作言語にモジュールを実装した話
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Yuya Kono
December 20, 2020
Programming
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自作言語にモジュールを実装した話
第33回 #hiro_it で発表したスライド
https://github.com/takoeight0821/kagami
Yuya Kono
December 20, 2020
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Transcript
ࣗ࡞ݴޠʹϞδϡʔϧΛ ࣮ͨ͠ ʹΌʔΜʢ!UBLPFJHIUʣ
ࣗ࡞ݴޠ(SJ f module HelloImport = { import Prelude; main =
{ putStr (String# "hello"#); putStrLn |> { f -> f (String# " world"#) }; }; } ͍ͱ͜ΖΛ࡞ͬͨ
ݴޠ༷ͷઃܭ
จ๏ ϞδϡʔϧΛѻ͏จ๏ʹ͍͔ͭ͘ͷύλʔϯ͕͋Δ #include <stdio.h>ɹϓϦϓϩηοαϨϕϧͰѻ͏ package com.example.hello;ɹτοϓϨϕϧͷએݴͱͯ͠ѻ͏ import java.util.Calendar;ɹͱΓ͋͑ͣ͜ΕΛ࣮͢Δͷ͕ඪ structure
Alist = structɹʢಛผͳҙຯΛ࣋ͭʣͱͯ͠ѻ͏ open List end
จ๏ͷઃܭ w ࣮͕େมͳͷͰɺ࣍ͷػೳޙճ͠ w Ϟδϡʔϧʹผ໊Λ͚ͭΔ w ϞδϡʔϧΛ֊Խ͢Δ w ಛఆͷؔΛΤΫεϙʔτɾΠϯϙʔτ͢Δ͔ΛϓϩάϥϚ͕બͿ $ͷΑ͏ʹɺΠϯϙʔτͨ͠ϞδϡʔϧͰએݴ͞Εͨͯ͢ͷܕؔ
ΛࢀরͰ͖Δɻʢ໊લۭؒʹʮͿͪ·͚Δʯʣ
จ๏ʢϞδϡʔϧͷએݴʣ ϞδϡʔϧΛୈҰڃͷͱͯ͠ѻ͑ͨΒ৭ʑخ͍͕͠ɺ࣮͕େม ݟͨͬΆ͍͚ͲɺΩπ੍͍Λઃ͚Δ͜ͱʹ͢Δ module <Ϟδϡʔϧ໊> = {
<֤छએݴ>; } Λ̍ϑΝΠϧʹ͖͚ͭ̍ͭͩॻ͚Δ
จ๏ʢϞδϡʔϧͷར༻ʣ import Prelude; Prelude.grfͷதΛͯ͢ಡΈࠐΉ import Prelude as P; import
Prelude.Int; Ͱ͖ͳ͍
(SJ f f ͷϞδϡʔϧͷจ๏ module Hello = { -- ϞδϡʔϧHelloͷએݴ
import Prelude; -- ϞδϡʔϧPreludeͷΠϯϙʔτ main = { putStr (String# "hello"#); putStrLn |> { f -> f (String# " world"#) }; }; }
ॲཧܥͷ࣮
࣮ͷํ w Ϟδϡʔϧͷ࣮ʹେ͖͘Θ͚ͯ̎ͭͷύλʔϯ͕͋Δ ιʔείʔυΛ̍ͭʹͭͳ͛Δ ࣮؆୯͕ͩɺιʔείʔυͷαΠζ͕രൃ͔͠Ͷͳ͍ ϦϯΫ࣌·Ͱ֤ϞδϡʔϧΛόϥόϥʹѻ͏
࣮େม͕ͩɺׂίϯύΠϧͰ͖ͯੑೳతʹ༗ར w ࠓճΛ࣮ʢ$ίϯύΠϥΛ࡞ͬͨͱ͖ʹͬͨͷͰʣ
࣮ͷ࡞ઓʢ̍ʣ w Λ؆୯ʹ͢ΔͨΊɺ࣍ͷΑ͏ͳιʔείʔυΛߟ͑Δ NPEVMF$IJME\ JNQPSU1BSFOU ^
$IJME͕1BSFOUΛΠϯϙʔτ͍ͯ͠Δ
࣮ͷ࡞ઓʢ̎ʣ w $IJMEΛίϯύΠϧ͢ΔͨΊʹɺ1BSFOUʹؔ͢ΔҎԼͷใ͕ඞཁ w ܕએݴͷҰཡ w ؔͷܕͷҰཡ w ιʔείʔυ্ͷ໊ؔͱɺ໊લղܾޙͷ໊ؔͷରԠද w
(SJ f f Ͱͷ໊ؔͱɺ--7.*3Ͱͷ໊ؔʢΞηϯϒϥͷϥϕϧ໊ʣͷରԠද w தஔԋࢉࢠͷ݁߹ॱҐͷҰཡ
࣮ͷ࡞ઓʢ̏ʣ w ຖճ1BSFOUͷιʔείʔυΛಡΈऔΔͱඇޮ 1BSFOUͷίϯύΠϧ࣌ʹɺඞཁͳใ͚ͩϝϞ͓ͯ͘͠ w ϝϞ1BSFOUHS f i ʹอଘɻ$ͷϔομϑΝΠϧͷΑ͏ͳΠϝʔδ
ʢਓ͕ؒಡΉඞཁͳ͍ͷͰదʹΤϯίʔυͯ͠อଘ͢Δʣ
ίϯύΠϧͷྲྀΕ 1BSFOUHSGͷίϯύΠϧ 1BSFOUPɺ1BSFOUHS f i ͷੜ $IJMEHSGͷίϯύΠϧ
1BSFOUHS f i ͷಡΈࠐΈ $IJMEPɺ$IJMEHS f i Oͷੜ 1BSFOUPͱ$IJMEPͷϦϯΫ
·ͱΊ w ࣗ࡞ݴޠ(SJ f f ʹϞδϡʔϧΛ࣮ͨ͠ w ͍͔ͭ͘ͷ%FTJHODIPJDF͕͋ͬͨ w จ๏ɺػೳɺ࣮ํ๏
50%0ɿϞδϡʔϧͷґଘؔΛࣗಈͰղܾ͢ΔϏϧυγεςϜ ɹɹɹɹΑΓߴػೳͳϞδϡʔϧͷ࣮ݱ ɹɹɹɹඪ४ϥΠϒϥϦͷඋ
༨ஊ HS f i ϑΝΠϧͷੜʹ)BTLFMMͷγϦΞϥΠζϥΠϒϥϦTFSJBMJ[FΛͬ ͨɻੜ͞ΕͨϑΝΠϧΛݟͯΈΔͱͨΒ͕ଟ͍ɻ Ͳ͏ͯͩ͠Ζ͏ͱߟ͑ͯΈΔͱɺ)BTLFMMͷ$IBSʢจࣈܕʣ6OJDPEF DPEFQPJOUΛද͍ͯ͠ΔɻTFSJBMJ[F͜ΕΛ65'-&ͰΤϯίʔυ͢Δͷ Ͱ͕ଟ͘ͳΔͬΆ͍ɻ