WebAssemblyを Rubyにコンパイルする黒魔術コード完全解説

by alice345

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8FC"TTFNCMZΛ  3VCZʹίϯύΠϧ͢Δ  ࠇຐज़ίʔυ׬શղઆ !BMJUBTP !5BNB3VCZձٞ

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ࣗݾ঺հ w ؙࢁ͋Γ͢ w 5XJUUFS!BMJUBTP w (JU)VC!BMJUBTP w ॴଐϐΫγϒגࣜձࣾ

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8FC"TTFNCMZͱ͸ $$ 3VTU &NTDSJQUFO ίϯύΠϥ XBTN 8FC"TTFNCMZόΠφϦ

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8FC"TTFNCMZͱ͸ $$ 3VTU &NTDSJQUFO ίϯύΠϥ XBTN 8FC"TTFNCMZόΠφϦ )5.- +4 ϒϥ΢β্Ͱಈ࡞

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8FC"TTFNCMZͱ3VCZ 3VCZPO8FC"TTFNCMZ5PN#MBDLIUUQXXXCMBDLUNDPNCMPHSVCZPOXFCBTTFNCMZ NSVCZ $ XBTN )5.- +4 NSVCZΛϒϥ΢β্Ͱಈ࡞

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8FC"TTFNCMZΛ3VCZͰಈ͔͢ $$ 3VTU &NTDSJQUFO XBTN ঺հͨ͠ྫ ຊൃදͰऔΓ্͛Δ Ξϓϩʔν XBTN 3VCZ੡  XBTNॲཧܥ 3VCZ

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ʮXBHZVʯ3VCZ੡ͷXBTNॲཧܥ XBTN 3VCZ XBHZV w 1VSF3VCZXBTNॲཧܥɺXBHZV ࿨ڇ Λ঺հ w IUUQTHJUIVCDPNFEWBLGXBHZV w 3VCZ,BJHJޙɺ!FEWBLG͞ΜͱҰॹʹ։ൃΛਐΊ͍ͯΔ w ຊൃදͰ͸XBHZVͷ೉ղͳ෦෼Λղઆ

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XBTNͷόΠφϦܗࣜ όΠφϦܗࣜ

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XBTNͷςΩετܗࣜ ςΩετܗࣜ

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XBHZVͷΞϓϩʔν XBHZV ςΩετܗࣜ 3VCZͷίʔυ தؒදݱ͔Β3VCZͷίʔυʹม׵ͯ͠FWBM͢Δ

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XBHZVͷΞϓϩʔν XBHZV ςΩετܗࣜ 3VCZͷίʔυ தؒදݱ͔Β3VCZͷίʔυʹม׵ͯ͠FWBM͢Δ ม׵͕ҰےೄͰ͸͍͔ͳ͍ྫ

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੍ޚ໋ྩͱCS w 8FC"TTFNCMZʹ͸ҎԼͷΑ͏ͳ੍ޚ໋ྩ͕͋Δ w JGCMPDLMPPQCSCS@JGCS@UBCMFSFUVSODBMMMDBMM@JOEJSFDU

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XBTNͷzCSz w CS͸EFQUI ϒϩοΫͷਂ͞ ͋Δ͍͸λάΛҾ਺ʹࢦఆ w JGจΛൈ͚ͨΓɺMPPQΛ܁Γฦͨ͠Γ͢Δͷʹ࢖͏

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XBTNͷzCMPDLz 8FC"TTFNCMZ 3VCZ ม׵ w XBTNͷzCMPDLz͸3VCZͷXIJMF USVF CSFBLFOEͰදݱͰ͖Δ w XBTNͷzCSz͸3VCZͷCSFBLʹରԠ

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XBTNͷzCMPDLzͱzCMPDLz w XBTNͷzCMPDLzͱzCMPDLz͕ωετ w XBTNͷzCSz͸3VCZͷUISPXDBUDIʹରԠ 3VCZ 8FC"TTFNCMZ ม׵

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XBTNͷzMPPQzͱzCMPDLͷωετ 8FC"TTFNCMZ ςΩετܗࣜ 3VCZ ม׵ w XBTNͷzMPPQzͱzCMPDLz͕ωετ w MPPQͷઌ಄ʹ໭ΔͨΊͷม਺͕ඞཁ

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ωετͷൈ͚ํΛߟ͑௚͢ w Ұؾʹ֎ଆ·Ͱൈ͚Α͏ͱ ͢Δͱ໘౗ w CSFBL UISPXDBUDI   OFYU ͲΕΛ࢖͏͔͸  ωετͷਂ͞ͱ੍ޚ໋ྩ ʹΑͬͯ୅ΘΔ

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ஈ֊తʹωετΛൈ͚Δ ࠷دΓͷωετ͔Βൈ͚͍ͨ ݸ֎ଆͷωετ͔Βൈ͚͍ͨ ݸ֎ଆͷωετ͔Βൈ͚͍ͨ CSͷҾ਺ ୤ग़͍ͨ͠ωετͷਂ͞ Λ ୤ग़͠ͳ͕Β֎΁֎΁఻͍͑ͯ͘3VCZίʔυʹม׵

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ಥવͰ͕͢໰୊Ͱ͢ w l)FMMP8PSMEzͱग़ྗ͞ΕΔ3VCZ ͷίʔυʹม׵͍ͨ͠ w ʹڞ௨ͯ͠ೖΔͷ͸  ͳΜͰ͠ΐ͏    "SFUVSO  #CSFBL  $OFYU

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SFUVSOΛ࢖ͬͨ৔߹ w ม਺EFQUI  ୤ग़͍ͨ͠ωετͷஈ਺ w ͜ͷίʔυͰ΍Γ͍ͨ͜ͱ  CSͷҾ਺ΛϒϩοΫΛ୤ग़  ͠ͳ͕Β֎΁֎΁ͱ఻͍͑ͯ͘ IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC-

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SFUVSOΛ࢖ͬͨ৔߹ w MBNCEB಺ͰSFUVSO  खଓ͖Λதஅ͠஋Λฦ͢ w CSΛSFUVSOͱஔ͖׵͓͑ͯΓ  ϧʔϓͷઌ಄ʹδϟϯϓ͍ͨ͠ IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC-

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SFUVSOΛ࢖ͬͨ৔߹ w @MPPQϝιου಺ͷϒϩοΫͰ SFUVSO  @MPPQϝιουΛൈ͚Δ  ϧʔϓ͠ͳ͍  SFUVSOͨ͠஋ Λฦ͢  IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC-

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CSFBLͷ৔߹ IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC- w @MPPQϝιου಺ͷϒϩοΫͰ  CSFBL  @MPPQϝιουΛதஅ  OFYU·Ͱ౸ୡͤͣ  l)FMMPz

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w @MPPQϝιου಺ͷϒϩοΫͰ  OFYU  ݺͼग़͠ݩ ZJFME ʹ໭Δ  ໭Γ஋͸OFYUͷҾ਺  ϧʔϓͷઌ಄ʹ໭ΕΔ OFYUͷ৔߹ IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC-

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OFYUͷ৔߹ w ࠶ͼJGจΛ࣮ߦ ࠓ౓͸FMTF ͳͷͰϧʔϓͤͣ୤ग़͍ͨ͠ IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC-

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OFYUͷ৔߹ w ࠶ͼJGจΛ࣮ߦ ࠓ౓͸FMTF w ZJFMEͷ໭Γ஋͸͔ͩΒϧʔϓͤͣ w @MPPQ͸Λฦ͢ IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC-

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w @CMPDLϝιου಺ͷϒϩοΫͰ  OFYU  ݺͼग़͠ݩͷZJFMEʹ໭Γ  ஋Λฦ͢ IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC- OFYUͷ৔߹

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w @CMPDLϝιου಺ͷϒϩοΫͰ  OFYU  ݺͼग़͠ݩͷZJFMEʹ໭Γ  ஋Λฦ͢ w ແࣄʹωετΛൈ͚ͯ  l)FMMP8PSMEz OFYUͷ৔߹ IUUQTHJUIVCDPNFEWBLGXBHZVCMPCDFFFCCCDCEFCBDFMJCXBHZVXBTNNPEVMFSC-

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CSΛ3VCZͰ؆୯ʹѻ͏ͨΊͷϙΠϯτ w 8FC"TTFNCMZͷzCS͸3VCZͷOFYUʹม׵ w 8FC"TTFNCMZͷJGCMPDLMPPQ͸ɺQSPD·ͨ͸CMPDLΛҾ਺ʹͱΔ  ϝιουʹ੾Γग़ͯ͠EFQUI͔Β࢝ΊΔ w ϒϩοΫऴ୺ͰOFYUEFQUIΛฦͯ͠ɺͭϒϩοΫΛ୤ग़͢Δ w ͜ΕΒΛڞ௨ͯ͠࢖͏͜ͱͰ੍ޚ໋ྩͷҧ͍ɺωετͷਂ͞Λҙࣝͤͣ 3VCZʹม׵Մೳ

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·ͱΊ w 8FC"TTFNCMZΛ3VCZʹίϯύΠϧ͢Δίʔυͷ࣮૷ͱಈ࡞ྫΛ঺հ w ϝλϓϩάϥϛϯάύλʔϯͷ͏ͪɺಈతͳϝιουఆٛΛ࢖͍  8FC"TTFNCMZͷؔ਺Λ3VCZͷϝιουʹίϯύΠϧ͢Δ w 8FC"TTFNCMZͷJGCMPDLMPPQͱCSΛ3VCZʹίϯύΠϧ͢Δࡍ͸  QSPDΦϒδΣΫτͱOFYUΛ͏·͘࢖͏ͱεοΩϦॻ͚Δ