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Vim script 静的解析の光と闇
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Kuniwak
PRO
August 22, 2015
Programming
8
1.8k
Vim script 静的解析の光と闇
YAPC:Asia 2015 の LT Day2 の発表です。
http://yapcasia.org/2015/
Kuniwak
PRO
August 22, 2015
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Transcript
7JNTDSJQU੩తղੳͷ ޫͱҋ
"CPVUNF
Kuniwak
7JNTDSJQU੩తղੳͷ ޫͱҋ
ޫͱҋͱ͍ͬͨͳɻ ͋Ειͩɻ
VViimm ssccrriipptt静的解析の 闇
ಛʹมͷղੳͰ ௧͍ʹ͖͋ͬͯͨ
۩ମతʹɿ w ະఆٛมͷ༻Λݕग़ w ະ༻มΛݕग़
࣮ͯ͠Έ͍͍ͨͷͷʜ w ߈ͰJTTVFཱ͕ͭͭ w ཱ͔ͪͩΔṖߏจͨͪ
ʘ͑Δͳʗ
None
ʢ͍͑ͨʜʣ
-W
มղੳͷجຊɺ มͷએݴͱࢀরͷ
એݴͱࢀরΛ͢Δ͜ͱͰʜ w એݴ͞Ε͍ͯͳ͍ͷʹࢀর͞Ε͍ͯΔ w એݴ͞ΕͯΔ͚Ͳࢀর͞Εͯͳ͍ Α͏ͳมΛݟ͚ͭͩ͢
7JNTDSJQUͷมએݴ
7JNTDSJQUͷมએݴ
–:h redir lSFEJ<S>\WBS^ϝοηʔδΛมʹ ϦμΠϨΫτ͠·͢ɻม͕ଘࡏ͠ͳ͍ ߹ɺ࡞͞Ε·͢ɻz
ίΠπɺมએݴ Ͱ͖Δͧʂ
-W
มղੳͷجຊɺ είʔϓΛ͓͑͞Δ͜ͱ
είʔϓͷछྨΛ ΈͯΈΑ͏
w NZ w PVS w MPDBM w TUBUF w ҉ͷHMPCBM
1FSM 7JNTDSJQU w H w M w T w X w C w U w W w ҉ͷH w ҉ͷM w ҉ͷW
ѹతͰͳ͍͔ʂ
͔͠ʮ҉ͷʙʯ͕ དͷDPVOUΛ Ҿ͖ى͜͢
100 0 100
WDPVOU͕ ࢀর͞ΕͯΔʂ
͞Βʹมͱؔʜ
var func
ผۭؒͩίϨʂ
-W
͋Δྻ͔Βผͷ ྻΛͭ͘ΔؔNBQ
จࣈྻ 1FSMͷNBQؔ 7JNTDSJQUͷNBQؔ
จࣈྻʹ͞ΕΔͱ ࣮ߦ࣌·ͰΘ͔Βͳ͍
ͳͷͰɺଟ͘ͷ੩తݕࠪ πʔϧղੳΛఘΊΔ
ͦ͜Ͱɺແࢹ͢ΔΑ͏ ʹͬͯΈͨͱ͜Ζʜ
ޡܯࠂͷཛྷ
ٽ͖ͳ͕ΒจࣈྻϦςϥϧ͚ͩ ղੳͰ͖ΔΑ͏ʹͨ͠ʜ
ʘŞŞŞʜNBQؔ ུ ʗ
ΩʔೖྗΛӈͷΩʔೖྗʹׂΓͯΔ NBQίϚϯυ
มએݴίϚϯυ͕࣮ߦ͞ΕΔ NBQίϚϯυͰมએݴ
Զ͢Ͱʹจࣈྻͷ߹ʹ ղੳ͢Δํ๏Λ͍ͬͯΔʜ ಉ͡खॱͰղੳͯ͠Δͧʂ
ʘʜʗ
ʘŞŞŞʜʗ
NBQίϚϯυͰมએݴ Ωʔೖྗͷ࠶ݱͳͷͰɺҟೖΔ
None
řŕ
ʘŞŞŞʜʗ
ʘ୭͕࠶ؼల։͠ͳ͍ͱݴͬͨʁʗ
͜ΕΒͷจࣈ͕NBQ͞Εͯͳ͍ͱݶΒͳ͍ʂ NBQ࠶ؼల։͞ΕΔ
řřŕ
ʘ͑Δͳʗ
ʢ͍͑ͨʜʣ
͍͑ͨͷͰɺղੳ͍͢͠ ίʔυΛॻ͍ͯ΄͍͠
ղੳ͍͢͠ίʔυ OPSFNBQ࠶ؼల։͞Εͳ͍ จࣈྻΛಈతʹૢ࡞͠ͳ͍
ͦΜͳ͜ΜͳͰͰ͖ͨͷ͕
Πϯετʔϧํ๏
$ pip install vim-vint
$ vint .vimrc .vimrc:6:10: Variable is not declared (see :help
E738)
Ұॹʹಇ͖·ͤΜ͔ʁ