Scala絵文字ライブラリに Macroなどを導入してみた

4DBMBֆจࣈϥΠϒϥϦʹ .BDSPͳͲΛಋೖͯ͠Έͨ !UPEPLS ָ͍͠ʂ

ా ॴ ॣ ༎ ! U P E
P L S w ݕ ࡧ Τ ϯ δ ϯ ࣄ ۀ ຊ ෦ Ϋ ϩ ʔ ϥ ʔ ։ ൃ w ࢓ ࣄ Ͱ ͸ 4 D B M B + B W B 4 D S J Q U 1 Z U I P O w ϓ ϥ Πϕ ʔ τ Ͱ ͸ $ M P K V S F $ M P K V S F 4 D S J Q U w ࣾ ಺ Ͱ ͸ ʮ จ ࣈ ί ʔ υ ͷ ਓ ʯ ͱ ͔   ʮ ΤϞ δ χ Ξ ʯ ͱ ݺ ͹ Εͯ ͍ · ͢

࠷ۙ࡞ͬͨ΋ͷ w 6OJDPEFͷֆจࣈ਺ ਐ਺Ͱ63-Λ୹ॖ w 1MBZ 4DBMB "844
&MBTUJD#FBOTUBML IUUQFNPKJVSMTIPSUFOFSDPN

க໋తʜ

க໋తʜ w 5XFUUFS               

க໋తʜ w 5XFUUFS        w 4MBDL     
 

க໋తʜ w 5XFUUFS        w 4MBDL     
  ˠϦϯΫʹͳͬͯ͘Εͳ͍

ຊ୊

ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ

ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO

ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO

ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO w .BDSP

ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO w .BDSP ʹ͍ͭͯɺ  ֆจࣈϥΠϒϥϦʮ&NPKJQPMBUJPOʯΛ୊ࡐʹɺ  ػೳͷར༻ྫΛ঺հ͠·͢ɻ

ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO w .BDSP ʹ͍ͭͯɺ  ֆจࣈϥΠϒϥϦʮ&NPKJQPMBUJPOʯΛ୊ࡐʹɺ  ػೳͷར༻ྫΛ঺հ͠·͢ɻ
ϥΠϒϥϦ࡞੒ͳͲͷࢀߟʹͳΕ͹͏Ε͍͠Ͱ͢ɻ

͓࿩͢͠Δ͜ͱ w &NPKJQPMBUJPOͷ঺հ w ࣮૷ͷมભʹ͍ͭͯ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO w
.BDSP w ϚΫϩಋೖલޙͷϕϯνϚʔΫൺֱ

͓࿩͠͠ͳ͍͜ͱ w 4DBMBͷந৅ߏจ໦ʹ͍ͭͯͷৄࡉ w EFGϚΫϩҎ֎ͷ.BDSPͷৄࡉ w ϝλϓϩάϥϛϯά༻ඪ४ϥΠϒϥϦTDBMBNFUB

ΑΖ͓͘͠Ͷ͕͍͠·͢

&NPKJQPMBUJPOʁ w 4DBMB͔Β6OJDPEFֆจࣈΛ؆୯ʹѻ͏ϥΠϒϥϦ w FNPKJKBWBͷϥούʔ  IUUQTHJUIVCDPNWEVSNPOUFNPKJKBWB

Ϟνϕʔγϣϯ w จࣈྻʹֆจࣈΛؾܰʹ࢖͍͍ͨ w ਐϦςϥϧͰॻ͘ͷ͸ඇৗʹͭΒ͍ w େ఍ͷֆจࣈͷίʔυϙΠϯτ͸6 'Ҏ্  ˠαϩήʔτϖΞ

Ϟνϕʔγϣϯ w .BDͷֆจࣈΩʔϘʔυ͸࢖͍উख͕ྑ͍ w $NE $USM 4QBDF w ͕͔ͩ͠͠ʜ w
6OJDPEFͷΞοϓσʔτʹ௥͍͍͍ͭͯͳ͍ w ͳͷͰɹɹͳͲ͕࢖͑ͳ͍ w ϓϥΠϕʔτͷϚγϯ͕.BD͡Όͳ͍

w ֆจࣈ͕؆୯ʹೖྗͰ͖ΔΑ͏ʹ

Ϟνϕʔγϣϯ (JUIVCϥΠΫʹKPZͳͲͱॻ͚ΔΑ͏ʹ͍ͨ͠  ˠFNPKJKBWBͷར༻ String str = ":grinning:awesome :wink:emojis!"; String result
= EmojiParser.parseToUnicode(str); System.out.println(result); // "awesome emojis!" ͜ΕΛΑΓ4DBMBΒ͍͠ํ๏Ͱʂ

ݱόʔδϣϯ·ͰͷಓͷΓ w W*NQMJDJU$POWFSTJPO w W4USJOH*OUFSQPMBUJPO w W.BDSP

W   *NQMJDJU$POWFSTJPO

*NQMJDJU$POWFSTJPO֓ཁ ҉໧తʹܕม׵Λߦ͑ΔΑ͏ʹ͢Δػೳ ˠ%&.0

*NQMJDJU$POWFSTJPO֓ཁ &OSJDI.Z-JCSBSZύλʔϯͰ  طଘΫϥεʹϝιουΛ௥Ճ͢ΔʢΑ͏ʹݟ͔͚ͤΔʣ // Implicit ClassʹΑΔEnrich My Libraryύλʔϯ implicit class
RichString(s: String) { def withSmile = s + ":)" } // new RichString("hello").withSmile "hello".withSmile // "hello:)" ˠ%&.0

*NQMJDJU$POWFSTJPO࣮૷ ͜ΕΛ&NPKJQPMBUJPOʹԠ༻͢Δ object Emojipolation { implicit class EmojizableString(s: String) {
def toEmoji: String = EmojiParser.parseToUnicode(s) } } // ར༻ଆ import io.github.todokr.Emojipolation._ "Hello! :joy:".toEmoji // Hello!

*NQMJDJU$POWFSTJPOར༻ײ w 4USJOHΦϒδΣΫτʹϝιουΛ௥Ճ͢Δ͜ͱʹΑΓ  ؆ܿʹֆจࣈม׵Λ࣮ݱ w ΋ͬͱ؆ܿͳํ๏͕͋ΔΑ͏ͳʜʁ

*NQMJDJU$POWFSTJPOར༻ײ w 4USJOHΦϒδΣΫτʹϝιουΛ௥Ճ͢Δ͜ͱʹΑΓ  ؆ܿʹֆจࣈม׵Λ࣮ݱ w ΋ͬͱ؆ܿͳํ๏͕͋ΔΑ͏ͳʜʁ IUUQTDBMJLFKECDPSHEPDVNFOUBUJPOTRMJOUFSQPMBUJPOIUNM

W   4USJOH*OUFSQPMBUJPO

4USJOH*OUFSQPMBUJPO֓ཁ w Ճ޻จࣈྻϦςϥϧ QSPDFTTFETUSJOHMJUFSBM ಺ʹ  ม਺ΛຒΊࠐΉػೳ w ίϯύΠϥ͸͜ͷϦςϥϧʹରͯ͠ԿΒ͔ͷ௥ՃॲཧΛ࣮ߦ͢Δ

4USJOH*OUFSQPMBUJPO֓ཁ w Tิؒࢠม਺Λల։        w Gิؒࢠ'PSNBUUFSͰ੔ܗ val name
= "todokr" s"Hello, $name" // "Hello, todokr" val Pi: Double = 3.14159265359 f"Pi is $Pi%1.2f" // "Pi is 3.14"

4USJOH*OUFSQPMBUJPO֓ཁ w 4USJOH*OUFSQPMBUJPOͷਖ਼ମ͸ͨͩͷϝιουݺͼग़͠

4USJOH*OUFSQPMBUJPO֓ཁ ίϯύΠϥ͕Ճ޻จࣈϦςϥϧΛݟ͚ͭΔ 4USJOH$POUFYUΠϯελϯεͷϝιουݺͼग़͠ʹม׵    ಠࣗͷ4USJOH*OUFSQPMBUJPOΛఆٛ͢Δʹ͸   ˠJNQMJDJUΫϥεΛ࡞Γɺ4USJOH$POUFYUΫϥεʹಠࣗͷϝιουΛ௥Ճ͢Δ hoge"some text" (StringContextͷΠϯελϯε).hoge(…)

4USJOH*OUFSQPMBUJPO࣮૷ ࣮૷ଆ object Emojipolation { implicit class EmojiImpl(val sc: StringContext)
extends AnyVal { def emoji(args: Any*): String = { // Ճ޻จࣈϦςϥϧͷจࣈྻ෦෼͸  // StringContextͷparts:Seq[String]ͱͯ͠ఏڙ͞ΕΔ // ࠓճ͸ศٓతʹઌ಄͚ͩΛѻ͏ val rawString = sc.parts.head // "Hello! :joy:" etc EmojiParser.parseToUnicode(rawString) } } } import io.github.todokr.Emojipolation._ emoji"Hello! :joy:" // Hello! ར༻ଆ

4USJOH*OUFSQPMBUJPO஫ҙ఺ w ࣮ߦ࣌ͷΠϯελϯεԽΛආ͚ΔͨΊɺ"OZ7BMΛܧঝ͢Δ w ৄࡉ͸IUUQEPDTTDBMBMBOHPSHKBPWFSWJFXTDPSFWBMVFDMBTTFTIUNMΛࢀর implicit class XXX(val sc: StringContext)
extends AnyVal { def someMethod(args: Any*): String = ??? }

4USJOH*OUFSQPMBUJPOར༻ײ w ͞Βʹ؆ܿʹɺ4DBMBΒ͘͠ֆจࣈม׵Λ࣮ݱ w ຖճม׵ϝιου͕ݺͼग़͞ΕΔͷ͸ scala> new EmojipolationTest().listEmojis converted! converted!
converted! converted! converted! ...

4USJOH*OUFSQPMBUJPOར༻ײ w ͞Βʹ؆ܿʹɺ4DBMBΒ͘͠ֆจࣈม׵Λ࣮ݱ w ຖճม׵ϝιου͕ݺͼग़͞ΕΔͷ͸ w ม׵͸ίϯύΠϧ࣌ʹߦ͍ɺ࣮ߦ࣌ͷΦʔόʔϔουΛͳ͍ͨ͘͠ scala> new EmojipolationTest().listEmojis
converted! converted! converted! converted! converted! ...

W   .BDSP

.BDSP֓ཁ w ந৅ߏจ໦Λ૊Έସ͑ΔͨΊͷ࢓૊Έ w ந৅ߏจ໦ "45 ίʔυͷҙຯΛද͢໦ߏ଄ (pprint (macroexpand '(when
(= color "blue") (println "Color is blue") (println "Not blue...")))) (if (= color "blue") (do (println "Color is blue") (println "Not blue..."))) ࢀߟDMPKVSFͷXIFOϚΫϩΛల։

.BDSP֓ཁ w 4DBMB͸ίϯύΠϧ࣌ʹϚΫϩΛల։͢Δ͜ͱ͕Ͱ͖Δ  ˠίϯύΠϧ࣌ʹ೚ҙͷॲཧ͕࣮ߦͰ͖Δ w 2VJMM%#ΞΫηεϥΠϒϥϦ w ίϯύΠϧ࣌ʹ42-ੜ੒ɺόϦσʔγϣϯ w 4DBMBGNUίʔυϑΥʔϚοτϥΠϒϥϦ
w ίϯύΠϧ࣌ʹίʔυͷϑΥʔϚοςΟϯά

.BDSP֓ཁ"45ΛݟͯΈΔ // ϦϑϨΫγϣϯAPIͷΠϯϙʔτ import scala.reflect.runtime.universe._ // qิؒࢠͰߏจ໦Λੜ੒ val tree =
q""" protected val x = 1 private val y = 3 x + y """ // ϦϑϨΫγϣϯAPIͷshowRawͰՃ޻લͷߏจ໦Λग़ྗ showRaw(tree)

.BDSP֓ཁ"45ΛݟͯΈΔ ਤʹ͢Δͱ͜͏ #MPDL "QQMZ -JTU 7BM%FG 7BM%FG .PEJpFST .PEJpFST 5FSN/BNF
5FSN/BNF -JUFSBM -JUFSBM $POTUBOU $POTUBOU 4FMFDU *EFOU -JTU 5FSN/BNF *EFOU 5FSN/BNF 5FSN/BNF Y 1305&$5&% 13*7"5& Z Y QMVT Z

.BDSP֓ཁ"45ͷ૸ࠪ ΍Γ͍ͨ͜ͱ $POTUBOU IFMMPKPZ $POTUBOU಺ͷจࣈྻΛՃ޻͠ɺ  ߏจ໦ͱͯ͠໭͢ $POTUBOU IFMMP ˠͲ͏΍ͬͯจࣈྻʹΞΫηε͢Δʁ

.BDSP֓ཁ"45ͷ૸ࠪ w ύλʔϯϚονϯάΛ༻͍ͨ૸ࠪ w ؆୯ w యܕతͳͷ͸୯ҰͷϊʔυΞΫηε͢Δ৔߹ w 5SBWFSTFSͷαϒΫϥεΛ༻͍ͨ૸ࠪ w
ߏจ໦શମΛ૸ࠪ͢Δ৔߹ Apply( // ࠓճͷՃ޻จࣈϦςϥϧʹϚον _, List( Apply( _, List( Literal(Constant(s: String)) ) ) ) )

.BDSP࣮૷ object Emojipolation { // String Interpolationͷड෇෦ implicit class EmojipolationImpl(val
sc: StringContext) extends AnyVal { def emoji(_: Any*): String = macro impl // ࣮૷͸ϚΫϩ } // ϚΫϩͷ࣮૷෦ def impl(c: blackbox.Context)(args: c.Expr[Any]*): c.Expr[String] = { import c.universe._ c.prefix.tree match { // String InterpolationͰड͚ͱͬͨStringʹϚον case Apply(_,List(Apply(_,List(Literal(Constant(s: String)))))) => // StringΛՃ޻͢Δߏจ໦ͱͯ͠ฦ͢ c.Expr[String](q"${EmojiParser.parseToUnicode(s)}") case _ => c.abort(c.enclosingPosition, "Oops!") } } }

.BDSPϕϯνϚʔΫ ֆจࣈϦςϥϧΛݸѻ͏ॲཧ  KNISVOJXJGU

.BDSPϕϯνϚʔΫ Non Macro [info] Benchmark Mode Cnt Score Error Units 
[info] Main.listEmojis thrpt 30 3.454 ± 0.303 ops/s ֆจࣈϦςϥϧΛݸѻ͏ॲཧ  KNISVOJXJGU

[info] Main.listEmojis thrpt 30 3.454 ± 0.303 ops/s Macro [info] Benchmark Mode Cnt Score Error Units  [info] Main.listEmojis thrpt 30 337491.727 ± 3268.895 ops/s ֆจࣈϦςϥϧΛݸѻ͏ॲཧ  KNISVOJXJGU

[info] Main.listEmojis thrpt 30 3.454 ± 0.303 ops/s Macro [info] Benchmark Mode Cnt Score Error Units  [info] Main.listEmojis thrpt 30 337491.727 ± 3268.895 ops/s ˠεϧʔϓοτ͕໿ ഒʹ ֆจࣈϦςϥϧΛݸѻ͏ॲཧ  KNISVOJXJGU

.BDSP஫ҙ఺ IUUQLNJ[VIBUFOBCMPHDPNFOUSZ

·ͱΊ w *NQMJDJU$POWFSTJPOΛద੾ʹѻ͏͜ͱͰ  ϝιουݺͼग़͠Λ؆ܿʹͰ͖Δ w ϦςϥϧϥΠΫʹԿ͔Λॻ͔͍ͤͨͳΒ  4USJOH*OUFSQPMBUJPOͷ࠾༻Λݕ౼͠Α͏ w ίϯύΠϧ࣌ʹ੩తʹ࣮ߦͰ͖ΔॲཧͳΒϚΫϩΛ࢖͍ɺ  ࣮ߦ࣌ͷΦʔόʔϔουΛͳͦ͘͏

͋Γ͕ͱ͏͍͟͝·ͨ͠

ࢀߟࢿྉ w *NQMJDJU࠶ೖ໳!HBLV[[[[  IUUQHBLV[[[[HJUIVCJPTMJEFTJNQMJDJU@SFJOUSPEVDUJPO w จࣈྻͷิؒ4DBMB%PDVNFOUBUJPO  IUUQEPDTTDBMBMBOHPSHKBPWFSWJFXTDPSFTUSJOHJOUFSQPMBUJPOIUNM w ஋Ϋϥεͱ൚༻τϨΠτ4DBMB%PDVNFOUBUJPO  IUUQEPDTTDBMBMBOHPSHKBPWFSWJFXTDPSFWBMVFDMBTTFTIUNM
w EFGϚΫϩ4DBMB%PDVNFOUBUJPO  IUUQEPDTTDBMBMBOHPSHKBPWFSWJFXTNBDSPTPWFSWJFXIUNM w 4DBMBͰίϯύΠϧ࣌ʹਖ਼نදݱΛνΣοΫ͢ΔʮϚΫϩ͔ͭ 4USJOH*OUFSQPMBUJPOʯ!YVXFJ  IUUQYVXFJLIBUFOBCMPHDPNFOUSZ

Scala絵文字ライブラリに Macroなどを導入してみた

Scala絵文字ライブラリに Macroなどを導入してみた

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