cpanfile が Ruby でパースできることに気づいた俺たちは

DQBOpMF͕3VCZͰύʔεͰ͖Δ ͜ͱʹؾ͍ͮͨԶͨͪ͸ CVJMEFSTDPOUPLZP େ஥ೳ࢙BLBJEPOL

ࣗݾ঺հ w େ஥ೳ࢙BLBJEPOL w ͸ͯͳͱ͍͏ձࣾͰɺ1FSMΛॻ͍͍ͯ·͢ɻ  ژ౎͔Βདྷ·ͨ͠ w ࠓ೥ͷ݄·Ͱલ৬Ͱ3VCZΛॻ͍͍ͯ·ͨ͠ɻ 3VCZྺ೥͙Β͍

લճͷϥʂ

1FSM࢖͍ͷࠃͷ3VCZJTU w

1FSM͔Β3VCZ΁ w

ࠓ೔ͷ࿩

DQBOpMFΛ requires 'Plack'; ... on test => sub { requires
'Test2', '1.302138'; ... }

DQBOpMFΛ3VCZͰʜʜʁ $ ruby -cw cpanfile Syntax OK

͍ͭ͜ʜʜಈͧ͘ʜʜʂ

ͱ͍͏࿩Ͱ͢ w ΑΖ͓͘͠ئ͍͠·͢

DQBOpMFͱ͸

DQBOpMFͱ͸ w ϓϩδΣΫτͰ࢖͏$1"/ϞδϡʔϧͷҰཡΛॻ͘΋ͷ w 3VCZͰ͍͏(FNpMF HFNpMFSC

DQBOpMFͷTZOUBY # requires Ͱ ࢖͍͍ͨ CPAN Module Λฒ΂Δ requires 'Plack';
... # ಛఆͷ env ͰͷΈ࢖͍͍ͨ΋ͷ͸ on <ENV> Ͱ sub Λ౉͢ on test => sub { # ୈ2Ҿ਺Ͱόʔδϣϯݻఆ͍ͯ͠Δ৔߹΋͋Δ requires 'Test2', '1.302138'; ... }

DQBOpMFͷTZOUBY w 3VCZతʹ͜ͷDQBOpMF͸ͲͷΑ͏ʹύʔε͞ΕΔ͔ w ৄ͘͠͸SVCZEVNQQBSTFUSFFDQBOpMFΛ࣮ߦ

DQBOpMFͷTZOUBYJO3VCZ w ͜ͷߦ͸3VCZͰ΋ಈ͘͜ͱ͕໌ന w SFRVJSFTϝιουʹจࣈྻͷҾ਺Λ౉͍ͯ͠Δ w ߦ຤ͷηϛίϩϯ͸͋ͬͯ΋֐͕ͳ͍ requires 'Plack';

DQBOpMFͷTZOUBYJO3VCZ w ໰୊͸ίον w ͜ΕΛ΋͏ͪΐͬͱ͚ͩΧοίΛิ଍͢Δͱ on test => sub {
requires 'Test2', '1.302138'; }

DQBOpMFͷTZOUBYJO3VCZ w ໰୊͸ίον w ͜ΕΛ΋͏ͪΐͬͱ͚ͩΧοίΛิ଍͢Δͱ on({ test => sub {
requires 'Test2', '1.302138'; } })

DQBOpMFͷTZOUBYJO3VCZ w POϝιουʹϋογϡΛ౉͍ͯ͠Δ on({ test => sub { requires 'Test2',
'1.302138'; } })

DQBOpMFͷTZOUBYJO3VCZ w ϋογϡͷΩʔ͸UFTUϝιου on({ test => sub { requires 'Test2',
'1.302138'; } })

DQBOpMFͷTZOUBYJO3VCZ w ϋογϡͷΩʔ͸UFTUϝιου w ϋογϡͷόϦϡʔ͸TVCϝιουʹϒϩοΫΛ౉ͨ͠΋ͷ on({ test => sub {
requires 'Test2', '1.302138'; } })

DQBOpMFͷTZOUBYJO3VCZ w ϋογϡͷΩʔ͸UFTUϝιου w ϋογϡͷόϦϡʔ͸TVCϝιουʹϒϩοΫΛ౉ͨ͠΋ͷ w ϒϩοΫͷத਎͸SFRVJSFTϝιουʹҾ਺Λ౉ͨ͠΋ͷ on({ test =>
sub { requires 'Test2', '1.302138'; } })

DQBOpMFͷTZOUBYJO3VCZ w ͜͜·Ͱ෼͔Ε͹ධՁͰ͖Δʂʂʂʂʂʂʁ on({ test => sub { requires 'Test2',
'1.302138'; } })

3VCZͰDQBOpMFΛධՁ͢Δ

3VCZͰDQBOpMFΛධՁ͢Δ w SFRVJSFT͸PSҾ਺Λड͚औΔϝιου requires ‘Plack'; requires 'Test2', '1.302138';

3VCZͰDQBOpMFΛධՁ͢Δ w SFRVJSFT͸PSҾ਺Λड͚औΔϝιου w ͱΓ͋͑ͣͲΜͳϞδϡʔϧΛ࢖͍͍͔ͨ෼͔ΔΑ͏ʹɺΠϯελ ϯεม਺ʹͰ΋٧Ί͓ͯ͜͏ @requires = [] def
requires(module_name, version = nil) @requires << [module_name, version] end

3VCZͰDQBOpMFΛධՁ͢Δ w PO͸ϋογϡΛҾ਺ʹऔΔϝιου on({ test => sub { requires 'Test2',
'1.302138'; } })

3VCZͰDQBOpMFΛධՁ͢Δ w PO͸ϋογϡΛҾ਺ʹऔΔϝιου w ͱΓࣺ͋͑ͣͯΕ͹͍͍͔ͳɻɻ w ͋ͱͰ࢖͏Α͏ʹվળ͠·͢ ޙड़ def on(_hash)
# nop end

3VCZͰDQBOpMFΛධՁ͢Δ w UFTU͸ϋογϡͷΩʔ on({ test => sub { requires 'Test2',
'1.302138'; } })

3VCZͰDQBOpMFΛධՁ͢Δ w UFTU͸ϋογϡͷΩʔ w ͳͷͰɺจࣈྻͷlUFTUzͰ΋ฦ͓͚ͯ͠͹ྑ͍ w Կ΋ฦ͞ͳͯ͘΋OJM͕ΩʔʹͳΔ͚ͩͰ͢ def test "test"
end

3VCZͰDQBOpMFΛධՁ͢Δ w TVC͸ϒϩοΫΛड͚औΔϝιου on({ test => sub { requires 'Test2',
'1.302138'; } })

3VCZͰDQBOpMFΛධՁ͢Δ w TVC͸ϒϩοΫΛड͚औΔϝιου w ZJFME͠·͢ def sub yield end

3VCZͰDQBOpMFΛධՁ͢Δ w TVC͸ϒϩοΫΛड͚औΔϝιου w ZJFME͠·͢ w ༨ஊ POΛ༗ޮʹ࢖͏ͨΊʹ͸஗ԆධՁͤ͞ΔͷͰMBNCEBͰแΉ def sub
-> { yield } end def on(hash) hash.each do |env, sub| sub.call end end

3VCZͰDQBOpMFΛධՁ͢Δ w ͋ͱ͸࣮ߦ͢Δ͚ͩʂʂʂ w σϞ eval File.read("./cpanfile") pp @requires

3VCZͰDQBOpMFΛධՁ͢Δ w ͋ͱ͸࣮ߦ͢Δ͚ͩʂʂʂ $ ruby cpanfile_parser.rb [["Plack", nil], ["Test2", "1.302138"]]

DQBOpMFΛධՁͰ͖ΔͱԿ ͕Ͱ͖Δ͔

DQBOpMFΛධՁͰ͖ΔͱԿ͕Ͱ͖Δ͔ w %FQFOEBCPUΛ࡞Δ͜ͱ͕Ͱ͖Δ w ϓϩδΣΫτ͕ґଘ͍ͯ͠ΔϥΠϒϥϦͷҰཡදࣔ w ࠷৽όʔδϣϯΑΓ΋ݹ͍όʔδϣϯͰݻఆ͍ͯͨ͠ΒܯࠂΛग़͢

DQBOpMFΛධՁͰ͖ΔͱԿ͕Ͱ͖Δ͔ w %FQFOEBCPUΛ࡞Δ͜ͱ͕Ͱ͖Δ w ϓϩδΣΫτ͕ґଘ͍ͯ͠ΔϥΠϒϥϦͷҰཡදࣔ w ࠷৽όʔδϣϯΑΓ΋ݹ͍όʔδϣϯͰݻఆ͍ͯͨ͠ΒܯࠂΛग़͢ w ͱ͍͏Θ͚Ͱ࡞Γ·ͨ͠ EFNP

DQBOpMFΛධՁͰ͖ΔͱԿ͕Ͱ͖Δ͔

૝ఆ2"

21FSM͡Όμϝͩͬͨͷ w μϝͳΘ͚͕ͳ͍ w ໘നશ෦Ͱ3VCZͰ࣮૷͠·ͨ͠

͸ͯͳͰ͸1FSMϓϩάϥϜʹ3VCZͰ4ZOUBY $IFDLΛࢼͯ͠ΈΔΤϯδχΞ΋ืू͍ͯ͠·͢

cpanfile が Ruby でパースできることに気づいた俺たちは

cpanfile が Ruby でパースできることに気づいた俺たちは

More Decks by Takafumi ONAKA

Featured

Transcript