“kenkenize”で触れるRubyの中身 / Kenkenization and the Ruby Internal

K-Ruby #24
https://k-ruby.connpass.com/event/151523/

Transcript

1. ʙϝλϓϩάϥϛϯάೖ໳ͱͯ͠ʙ
   ܀ྛ݈ଠ࿠(.01FQBCP *OD
   ,3VCZ
   lLFOLFOJ[FzͰ৮ΕΔ3VCZͷத਎
   

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2. (.0ϖύϘגࣜձࣾ
   ܀ྛ݈ଠ࿠BLB͋ΜͪΆͪΌΜ
   औక໾$50ɺࣛࣇౡΦϑΟενʔϜ੹೚ऀ
   IUUQTLFOUBSPLPSH
   

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3. ໨࣍
   ࣄͷൃ୺
   LFOLFOHFNͷઆ໌
   LFOLFOHFNͷ࣮૷
   ͓ΘΓʹ
   

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4. ࣄͷൃ୺
   

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5. LFOLFOʹಥવ;ͬͯΘ͍ͨةػ
   ࣛࣇౡΦϑΟενʔϜʹLFOLFOͱ͍͏໊͋ͩͷΤϯδχΞ͕͍Δͷ͕ͩɺ
   ಥવͷվ໊ఏҊʹΑΔ໊͋ͩͷةػʂʂ̍
   

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6. LFOLFOΛकΕʂʢʣ
   ·͋ɺͦ͏ͳΓ·͢ΑͶʜʜɻ
   

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7. LFOLFOΛकΕʂʢʣ
   স͍ͷઈ͑ͳ͍ΞοτϗʔϜͳ৬৔Ͱ͢ɻ
   

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8. LFOLFOΛकΕʂʢʣ
   ᰜ૘ͱݱΕΔΘͨ͘͠ͷఏҊɻ
   

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9. lLFOLFOJ[Fzͷཁ݅
   wཁ݅ ken ^ 2͕จࣈྻkenkenΛฦ͢
   wͨͩ͠ɺม਺ ken ʹจࣈྻken ͕ೖͬͯͯɺͦΕ͕ϝιου ^ ʹΑΓO
   ճ܁Γฦ͞ΕΔͱ͍͏࣮૷ͩͱͭ·Βͳ͍Ͱ͢ΑͶ
   wͦ͜Ͱɺม਺ʹ͍͔ͳΔจࣈྻ͕ೖ͍ͬͯͯ΋ɺม਺໊Λnճ܁Γฦ͢͜ͱͰ
   ཁ݅Λຬͨ͢ίʔυʹ͍ͨ͠ɻ͜ͷॲཧΛlLFOLFOJ[FzͱݺͿɻ
   ͋ͳͨͳΒͲ͏͠·͔͢ʁߟ͑ͯΈ͍ͯͩ͘͞ɻ
   

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10. LFOLFOHFNͷઆ໌
    

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11. IUUQTHJUIVCDPNLFOUBSPLFOLFO
    

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12. LFOLFOHFNͷ࢖͍ํʢʣ
    

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13. LFOLFOHFNͷ࢖͍ํʢʣ
    จࣈྻ͕ͳΜͰ͋Δ͔ʹؔΘΒͣɺ
    ม਺໊͔Β܁Γฦ͢จࣈ͕ܾఆ͞ΕΔ
    

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14. ཁ݅ͷ֬ೝ
    㾎ཁ݅ ken ^ 2͕จࣈྻkenkenΛฦ͢
    㾎ͨͩ͠ɺม਺ ken ʹจࣈྻken ͕ೖͬͯͯɺͦΕ͕ϝιου ^ ʹΑΓO
    ճ܁Γฦ͞ΕΔͱ͍͏࣮૷ͩͱͭ·Βͳ͍Ͱ͢ΑͶ
    㾎ͦ͜Ͱɺม਺ʹ͍͔ͳΔจࣈྻ͕ೖ͍ͬͯͯ΋ɺม਺໊Λnճ܁Γฦ͢͜ͱ
    Ͱཁ݅Λຬͨ͢ίʔυʹ͍ͨ͠ɻ͜ͷॲཧΛlLFOLFOJ[FzͱݺͿɻ
    ཁ݅ΛຬͨͤͨʂLFOLFOͷ໊͕͋ͩकΒΕͨʂʂ̍
    

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15. LFOLFOHFNͷ࣮૷
    

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16. LFOLFOHFN࣮૷ͷίΞʢൈਮʣ
    

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17. eval͢Δ࣌ʹ3VCZͷ಺෦Ͱى͍ͬͯ͜Δ͜ͱʜᶃ
    1BU4IBVHIOFTTZ 3VCZ6OEFSB.JDSPTDPQF"O*MMVTUSBUFE(VJEFUP3VCZ*OUFSOBMT /P4UBSDI1SFTT QQ
    

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18. eval͢Δ࣌ʹ3VCZͷ಺෦Ͱى͍ͬͯ͜Δ͜ͱʜᶄ
    1BU4IBVHIOFTTZ 3VCZ6OEFSB.JDSPTDPQF"O*MMVTUSBUFE(VJEFUP3VCZ*OUFSOBMT /P4UBSDI1SFTT QQ
    

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19. LFOLFOHFN࣮૷΁ͷಓے
    wᶃͷྫ͔Β
    weval ͢Δͱɺ৽͍͠ελοΫϑϨʔϜ͕࡞੒͞ΕΔ
    wͦͷελοΫϑϨʔϜ͔Β͸ɺEPΛ௨ͯ͡ݩͷจ຺ͷม਺ΛࢀরͰ͖Δ
    wᶄͷྫ͔Β
    wbindingΛ௨ͯ͡ɺݺͼग़͞Εͨϝιου಺ͷม਺ΛࢀরͰ͖Δ
    wͭ·ΓɺbindingΛऔಘ͑͞Ͱ͖Ε͹ɺͦͷٯ΋Ͱ͖Δʹҧ͍ͳ͍
    wϝιουݺͼग़͠ݩͷbindingΛ௨ͯࣗ͡෼ͷม਺໊ΛऔಘͰ͖Δ͸ͣʂ
    

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20. LFOLFOHFN࣮૷ͷίΞͷղઆ
    ᶃݱࡏͷϑϨʔϜͷ;ͨͭ
    ্ͷbindingΛऔಘ
    ᶄᶃͷϑϨʔϜ্ͷϩʔΧ
    ϧม਺ҰཡΛऔಘ
    ᶅᶄͰऔಘͨ͠ม਺໊Λᶃ
    ্ͰධՁ͠ɺ஋ΛಘΔ
    ᶆᶅͰಘͨ஋ͱࣗ෼ࣗ਎
    selfΛൺֱɻಉ͡ͳΒɺ
    ͦΕ͕໨తͷม਺Ͱ͋Δɻ
    binding#of_callerϝιου͸ɺCJOEJOH@PG@DBMMFSHFNʹΑͬͯ௥Ճ͞ΕͨϝιουͰɺίʔϧελοΫΛ͔͞ͷ΅ͬͯCJOEJOHΛऔಘͰ͖Δɻ
    

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21. ͓ΘΓʹ
    

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22. ·ͱΊͱิ଍
    wٕज़͕ͻͱΓͷਓؒͷ໊͋ͩΛकͬͨʂਖ਼͕࣮ٛߦ͞Εͨʂʂ̍
    wݴޠͷ಺෦࣮૷ʹؔ͢ΔΠϝʔδ͕͋Δͱɺൃ૝ͷ෯͕޿͕Δʢ͔΋ʣ
    weval+binding΍ɺ͜͜Ͱ͸ղઆ͠ͳ͔ͬͨModule#class_eval
    BasicObject#instance_eval౳Λ࢖͏ͱɺݱࡏͷίϯςΩετΛ͋Ε͜
    ΕมߋͰ͖Δ
    w3VCZͰϝλϓϩάϥϛϯάΛ͍ͯ͠Δ৔߹ɺͦ͏͍͏ख๏Λ༻͍͍ͯΔ͜ͱ
    ͕ଟ͍ͷͰɺ஌͓ͬͯ͘ͱίʔυϦʔσΟϯάͷ໾ʹཱͭ
    ˞ࢀরͨ͠ॻ੶͸೥ץߦͷͨΊɺ࠷৽ͷ3VCZʹ͓͍ͯ͸಺෦࣮૷͕ҧ͍ͬͯΔ͔΋͠Ε·ͤΜɻͦͷลͷ֬ೝ͸ɺࠓޙͷ՝୊ͱ͍͏͜ͱͰɻ
    

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