“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࿠
   
   (.0
   1FQBCP
   *OD
   
   ,3VCZ
    lLFOLFOJ[FzͰ৮ΕΔ3VCZͷத਎
2. (.0ϖύϘגࣜձࣾ ܀ྛ
   ݈ଠ࿠
   
   BLB
   ͋ΜͪΆͪΌΜ औక໾$50ɺࣛࣇౡΦϑΟενʔϜ੹೚ऀ IUUQTLFOUBSPLPSH
3. ໨࣍ ࣄͷൃ୺
   LFOLFO
   HFNͷઆ໌
   LFOLFO
   HFNͷ࣮૷
   ͓ΘΓʹ
4. 
   ࣄͷൃ୺
5. LFOLFOʹಥવ;ͬͯΘ͍ͨةػ ࣛࣇౡΦϑΟενʔϜʹLFOLFOͱ͍͏໊͋ͩͷΤϯδχΞ͕͍Δͷ͕ͩɺ ಥવͷվ໊ఏҊʹΑΔ໊͋ͩͷةػʂʂ̍
6. LFOLFOΛकΕʂʢʣ ·͋ɺͦ͏ͳΓ·͢ΑͶʜʜɻ
7. LFOLFOΛकΕʂʢʣ স͍ͷઈ͑ͳ͍ΞοτϗʔϜͳ৬৔Ͱ͢ɻ
8. LFOLFOΛकΕʂʢʣ ᰜ૘ͱݱΕΔΘͨ͘͠ͷఏҊɻ
9. lLFOLFOJ[Fzͷཁ݅ wཁ݅ ken ^ 2
   ͕จࣈྻ
   kenken
   Λฦ͢
   wͨͩ͠ɺม਺ ken ʹจࣈྻ
   ken ͕ೖͬͯͯɺͦΕ͕ϝιου ^ ʹΑΓ
   O
   ճ܁Γฦ͞ΕΔͱ͍͏࣮૷ͩͱͭ·Βͳ͍Ͱ͢ΑͶ
   wͦ͜Ͱɺม਺ʹ͍͔ͳΔจࣈྻ͕ೖ͍ͬͯͯ΋ɺม਺໊Λ
   n
   ճ܁Γฦ͢͜ͱͰ ཁ݅Λຬͨ͢ίʔυʹ͍ͨ͠ɻ͜ͷॲཧΛlLFOLFOJ[FzͱݺͿɻ ͋ͳͨͳΒͲ͏͠·͔͢ʁߟ͑ͯΈ͍ͯͩ͘͞ɻ
10. 
    LFOLFO
    HFNͷઆ໌
11. IUUQTHJUIVCDPNLFOUBSPLFOLFO
12. LFOLFO
    HFNͷ࢖͍ํʢʣ
13. LFOLFO
    HFNͷ࢖͍ํʢʣ จࣈྻ͕ͳΜͰ͋Δ͔ʹؔΘΒͣɺ
    ม਺໊͔Β܁Γฦ͢จࣈ͕ܾఆ͞ΕΔ
14. ཁ݅ͷ֬ೝ 㾎ཁ݅ ken ^ 2
    ͕จࣈྻ
    kenken
    Λฦ͢
    㾎ͨͩ͠ɺม਺ ken ʹจࣈྻ
    ken ͕ೖͬͯͯɺͦΕ͕ϝιου ^ ʹΑΓ
    O
    ճ܁Γฦ͞ΕΔͱ͍͏࣮૷ͩͱͭ·Βͳ͍Ͱ͢ΑͶ
    㾎ͦ͜Ͱɺม਺ʹ͍͔ͳΔจࣈྻ͕ೖ͍ͬͯͯ΋ɺม਺໊Λ
    n
    ճ܁Γฦ͢͜ͱ Ͱཁ݅Λຬͨ͢ίʔυʹ͍ͨ͠ɻ͜ͷॲཧΛlLFOLFOJ[FzͱݺͿɻ ཁ݅ΛຬͨͤͨʂLFOLFOͷ໊͕͋ͩकΒΕͨʂʂ̍
15. 
    LFOLFO
    HFNͷ࣮૷
16. LFOLFO
    HFN࣮૷ͷίΞʢൈਮʣ
17. eval
    ͢Δ࣌ʹ3VCZͷ಺෦Ͱى͍ͬͯ͜Δ͜ͱʜᶃ 1BU
    4IBVHIOFTTZ
    3VCZ
    6OEFS
    B
    .JDSPTDPQF
    
    "O
    *MMVTUSBUFE
    (VJEF
    UP
    3VCZ
    *OUFSOBMT
    /P
    4UBSDI
    1SFTT
    
    QQ
18. eval
    ͢Δ࣌ʹ3VCZͷ಺෦Ͱى͍ͬͯ͜Δ͜ͱʜᶄ 1BU
    4IBVHIOFTTZ
    3VCZ
    6OEFS
    B
    .JDSPTDPQF
    
    "O
    *MMVTUSBUFE
    (VJEF
    UP
    3VCZ
    *OUFSOBMT
    /P
    4UBSDI
    1SFTT
    
    QQ
19. LFOLFO
    HFN࣮૷΁ͷಓے wᶃͷྫ͔Β
    weval ͢Δͱɺ৽͍͠ελοΫϑϨʔϜ͕࡞੒͞ΕΔ
    wͦͷελοΫϑϨʔϜ͔Β͸ɺEP
    Λ௨ͯ͡ݩͷจ຺ͷม਺ΛࢀরͰ͖Δ
    wᶄͷྫ͔Β
    wbinding
    Λ௨ͯ͡ɺݺͼग़͞Εͨϝιου಺ͷม਺ΛࢀরͰ͖Δ
    wͭ·Γɺbinding
    Λऔಘ͑͞Ͱ͖Ε͹ɺͦͷٯ΋Ͱ͖Δʹҧ͍ͳ͍
    wϝιουݺͼग़͠ݩͷ
    binding
    Λ௨ͯࣗ͡෼ͷม਺໊ΛऔಘͰ͖Δ͸ͣʂ
20. LFOLFO
    HFN࣮૷ͷίΞͷղઆ ᶃ
    ݱࡏͷϑϨʔϜͷ;ͨͭ ্ͷbinding
    Λऔಘ ᶄ
    ᶃͷϑϨʔϜ্ͷϩʔΧ ϧม਺ҰཡΛऔಘ ᶅ
    ᶄͰऔಘͨ͠ม਺໊Λᶃ ্ͰධՁ͠ɺ஋ΛಘΔ ᶆ
    ᶅͰಘͨ஋ͱࣗ෼ࣗ਎ selfΛൺֱɻಉ͡ͳΒɺ ͦΕ͕໨తͷม਺Ͱ͋Δɻ binding#of_caller
    ϝιου͸ɺCJOEJOH@PG@DBMMFS
    HFN
    ʹΑͬͯ௥Ճ͞ΕͨϝιουͰɺίʔϧελοΫΛ͔͞ͷ΅ͬͯCJOEJOHΛऔಘͰ͖Δɻ
21. 
    ͓ΘΓʹ
22. ·ͱΊͱิ଍ wٕज़͕ͻͱΓͷਓؒͷ໊͋ͩΛकͬͨʂਖ਼͕࣮ٛߦ͞Εͨʂʂ̍
    wݴޠͷ಺෦࣮૷ʹؔ͢ΔΠϝʔδ͕͋Δͱɺൃ૝ͷ෯͕޿͕Δʢ͔΋ʣ
    weval
    +
    binding
    ΍ɺ͜͜Ͱ͸ղઆ͠ͳ͔ͬͨ
    Module#class_eval
    BasicObject#instance_eval
    ౳Λ࢖͏ͱɺݱࡏͷίϯςΩετΛ͋Ε͜ ΕมߋͰ͖Δ
    w3VCZͰϝλϓϩάϥϛϯάΛ͍ͯ͠Δ৔߹ɺͦ͏͍͏ख๏Λ༻͍͍ͯΔ͜ͱ ͕ଟ͍ͷͰɺ஌͓ͬͯ͘ͱίʔυϦʔσΟϯάͷ໾ʹཱͭ ˞
    ࢀরͨ͠ॻ੶͸೥ץߦͷͨΊɺ࠷৽ͷ3VCZʹ͓͍ͯ͸಺෦࣮૷͕ҧ͍ͬͯΔ͔΋͠Ε·ͤΜɻͦͷลͷ֬ೝ͸ɺࠓޙͷ՝୊ͱ͍͏͜ͱͰɻ