....................................../////.===Shadow-Here===./////................................................ > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < ------------------------------------------------------------------------------------------------------------------- /////////////////////////////////////////////////////////////////////////////////////////////////////////////////// RIFF¤ WEBPVP8 ˜ ðÑ *ôô>‘HŸK¥¤"§£±¨àð enü¹%½_F‘åè¿2ºQú³íªú`N¿­3ÿƒügµJžaÿ¯ÿ°~¼ÎùnúîÞÖô•òíôÁÉß®Sm¥Ü/ ‡ó˜f£Ùà<˜„xëJ¢Ù€SO3x<ªÔ©4¿+ç¶A`q@Ì“Úñè™ÍÿJÌ´ª-˜ÆtÊÛL]Ïq*‘Ý”ì#ŸÌÏãY]@ê`¿ /ªfkØB4·®£ó z—Üw¥Pxù–ÞLШKÇN¾AkÙTf½è'‰g gÆv›Øuh~ a˜Z— ïj*á¥t d£“uÒ ¨`K˜¹ßþ]b>˜]_ÏÔ6W—è2r4x•íÖ…"ƒÖNîä!¦å Ú}ýxGøÌ —@ ;ÆÚŠ=ɾ1ý8lªË¥ô ^yf®Œ¢u&2©nÙÇ›ñÂñŒ³ aPo['½»øFùà­+4ê“$!lövlüÞ=;N®3ð‚õ›DÉKòÞ>ÄÍ ¥ˆuߤ#ˆ$6ù™¥îŠ‡y’ÍB¼ çxÛ;X"WL£R÷͝*ó-¶Zu}º.s¸sšXqù–DþÿvªhüïwyŸ ¯é³lÀ:KCûÄ£Ëá\…­ ~—ýóî ¼ûûÜTÓüÇy…ŽÆvc»¾×U ñ¸žþоP÷¦ó:Ò¨¨5;Ð#&#ÖúñläÿÁœ GxÉ­/ñ‡áQðìYÉtÒwŽ¼GÔ´zàÒò ð*ëzƒ•4~H]Ø‹f ñÓÈñ`NåWçs'ÆÏW^ø¹!XžµmQ5ÃËoLœÎ: ÞËÍ¥J ù…î èo£ßPÎñ¶ž8.Œ]ʵ~5›ÙË-ù*8ÙÖß±~ ©¹rÓê‚j¶d¸{^Q'˜±Crß ÚH—#¥¥QlÀ×ëã‡DÜ«èî þ&Çæžî;ŽÏºò6ÒLÃXy&ZŒ'j‚¢Ù€IßÚù+–MGi‰*jE€‘JcÜ ÓÌ EÏÚj]o˜ Þr <¾U ûŪæÍ/šÝH¥˜b”¼ ÁñßX GP›ï2›4WŠÏà×£…íÓk†¦H·ÅíMh–*nó÷à]ÁjCº€b7<ب‹¨5車bp2:Á[UªM„QŒçiNMa#<5›áËó¸HýÊ"…×Éw¹¦ì2º–x<›»a±¸3Weü®FÝ⑱ö–î–³|LPÈ~çð~Çå‡|º kD¢µÏàÆAI %1À% ¹Ò – ”ϝS¦‰4&¶£°à Öý”û_Ò Áw°A«Å€?mÇÛgHÉ/8)á¾ÛìáöŽP í¨PŸNÙµº¦‡§Ùš"ÿ«>+ªÕ`Ê÷‡‚ß Õû˜þãÇ-PÍ.¾XV‘€ dÜ"þ4¹ ±Oú‘©t¥¦FªÄÃÄ•b‚znýu½—#cDs˜ÃiÑOˆñ×QO=*IAÊ,¶ŽZƒ;‡wøXè%EÐk:F±Ú” .Ѽ+Áu&Ç`."pÈÉw o&¿dE6‘’EqTuK@Ì¥ã™À(Êk(h‰,H}RÀIXÛš3µ1©_OqÚÒJAñ$ÊÙÜ;D3çŒ[þùœh¬Ã³™ö6ç†NY".Ú‰ï[ªŸŒ '²Ð öø_¨ÂÉ9u鶳ÒŠõTàîMØ#û¯gN‡bÙ놚X„ö …ÉeüÌ^J ‹€.œ$Æ)βÄeæW#óüßĺŸ€ ÀzwV 9oä»f4V*uB «Ë†¹ì¯žR霓æHXa=&“I4K;¯ç‹h×·"UŠ~<•â•ªVêª&ÍSÃÆÅ?ÔqÎ*mTM ˜›µwêd#[C¡©§‘D<©àb†–ÁœøvH/,í:¯( ²£|4-„Æövv„Yͼ™^Á$ˆ„¢Û[6yB.åH*V¨æ?$=˜Ñ€•î¦ñ·­(VlŸ‘ nÀt8W÷´Bûba?q9ú¶Xƒl«ÿ\ù¶’þòUÐj/õ¢Ìµ³g$ƒÎR!¸»|Oߍë’BhîÚÑ¢ñåŒJ„®„£2Ð3•ô02Nt…!£Í]Ïc½Qÿ?ˆ<&ÃA¾Ú,JˆijÌ#5yz„‰Î|ÊŽ5QÏ:‹ÐaóVÔxW—CpeÏzÐïíçôÿÅ_[hãsÐ_/ŽTÝ?BîˆííV$<¿i>²F¬_Eß¿ †bÊŒº­ÿ®Z H“C}”¬,Mp ý/Bá£w>˜YV°aƒúh+cŠ- r/[%|üUMHäQ°X»|û/@|°¥Ð !BÔ Ç¢Ä©š+Õì D«7ìN¶ŽðÔ " ƶ’ÖçtA‰Û×}{tþz­¾GÍ›k¹OEJR$ Â׃ «ëÁ"oÉôž$oUK(Ä)Ãz³Ê-‹êN[Ò3Œñbï8P 4ƒ×q¢bo|?<ÛX¬òÄÍ°L–±›(™ûG?ýË©ÚÄ–ÂDØÐ_Ç¡ô ¾–ÄÏø ×e8Ë©$ÄF¹Å‹ì[©óìl:F¾f´‹‹Xì²ï®\¬ôùƒ ÿat¥óèÒùHß0äe‚;ü×h:ÆWðHž=Ã8骣"kœ'Y?³}Tûè€>?0l›e1Lòñ„aæKÆw…hÖŠùW…ÈÆÄ0ši·›[pcwËþñiêíY/~-Á5˜!¿†A›™Mÿþ(±“t@â“ö2­´TG5yé]çå僳 .·ÍïçÝ7UÚ±Ð/Nè»,_Ï ùdj7\ï Wì4›„»c¸àešg#ÒÊ⥭áØo5‘?ÌdÝô¯ ¹kzsƒ=´#ëÉK›Ø´±-¥eW?‡çßtòTã…$Ý+qÿ±ƒ÷_3Ô¥í÷:æ–ž<·Ö‡‰Å¢ š‡%Ô—utÌÈìðžgÖÀz²À—ï÷Óîäõ{K'´È÷³yaÏÁjƒô}ž§®æÊydÕÈë5¯èˆõvÕ©ã*çD„ “z„Ó‡^^xÂ3M§A´JG‚öï 3W'ˆ.OvXè¡ÊÕª?5º7†˜(˜Ç¶#çê’¶!ÌdZK§æ 0fãaN]òY³RV ™î$®K2R¨`W!1Ôó\;Ý ýB%qæK•&ÓÈe9È0êI±žeŸß -ú@žQr¦ ö4»M¼Áè¹µmw 9 EÆE_°2ó„ŸXKWÁ×Hóì^´²GѝF©óäR†¦‰ç"V»eØ<3ùd3ÿÚ¤Žú“Gi" —‘_ÙËÎ~Üö¯¥½Î»üŸEÚŽåmÞþí ;ÞólËΦMzA"Âf(´òá;Éï(/7½ûñÌ­cïÕçлþÝz¾-ÍvÑ“pH­–ðÓj$¸Äû¤‚‘ãUBË-n“2åPkS5&‹Â|+g^œ®Ì͆d!OïäîU«c;{Û!ÅŽ«ëZ9Ókóˆ]¯ƒ›né `ÇÒ+tÆš (ØKá¾—=3œ®•vuMñg²\ï Ec€ 05±d™‡×iÇ×›UúvÌ¢£Èþ¡ÕØô¶ßÎA"ß±#Ö²ˆÊŸ¦*Ä~ij|àø.-¼'»Ú¥£h ofº¦‡VsR=N½„Î v˜Z*SÌ{=jÑB‹tê…;’HžH¯8–îDù8ñ¢|Q•bÛçš–‹m³“ê¨ åÏ^m¬Žãþ©ïêO‡½6] µÆ„Ooòü ²x}N¦Ë3ïé¿»€›HA˜m%çÞ/¿í7Fø“‹léUk)É°Œµ8Q8›:ÀŠeT*šõ~ôڝG6 ¢}`ùH­–”¡k ‰P1>š†®9z11!X wKfmÁ¦xÑ,N1Q”–æB¶M…ÒÃv6SMˆhU¬ÊPŽï‘öj=·CŒ¯u¹ƒVIЃsx4’ömÛýc塶7ßŠß 57^\wÒÐÆ k§h,Œý î«q^R½3]J¸ÇðN ‚çU¬ôº^Áì} ³f©Õœ§ˆã:FÄÈ‚é(€™?àýÓüè1Gô£¼éj‚OÅñ  #>×—ßtà 0G¥Åa뀐kßhc™À_ÉñÞ#±)GD" YîäË-ÿÙ̪ ¹™a¯´¢E\ÝÒö‚;™„ë]_ p8‰o¡ñ+^÷ 3‘'dT4œŽ ðVë½° :¬víÑ«£tßÚS-3¶“þ2 †üüʨòrš¹M{É_¤`Û¨0ìjœøJ‡:÷ÃáZ˜†@GP&œÑDGÏs¡þ¦þDGú‘1Yá9Ôþ¼ ûø…§÷8&–ÜÑnÄ_m®^üÆ`;ÉVÁJ£?â€-ßê}suÍ2sõA NÌúA磸‘îÿÚ»ƒìö·á¿±tÑÐ"Tÿü˜[@/äj¬€uüªìù¥Ý˜á8Ý´sõj 8@rˆð äþZÇD®ÿUÏ2ùôõrBzÆÏÞž>Ì™xœ“ wiÎ×7_… ¸ \#€MɁV¶¥üÕÿPÔ9Z‡ø§É8#H:ƒ5ÀÝå9ÍIŒ5åKÙŠ÷qÄ>1AÈøžj"µÂд/ªnÀ qªã}"iŸBå˜ÓÛŽ¦…&ݧ;G@—³b¯“•"´4í¨ôM¨åñC‹ïùÉó¯ÓsSH2Ý@ßáM‡ˆKÀªÛUeø/4\gnm¥‹ŸŒ qÄ b9ÞwÒNÏ_4Ég³ú=܆‚´ •â¥õeíþkjz>éÚyU«Íӝ݃6"8/ø{=Ô¢»G¥ äUw°W«,ô—¿ãㆅү¢³xŠUû™yŒ (øSópÐ 9\åTâ»—*oG$/×ÍT†Y¿1¤Þ¢_‡ ¼ „±ÍçèSaÓ 3ÛMÁBkxs‰’R/¡¤ˆÙçª(*õ„üXÌ´ƒ E§´¬EF"Ù”R/ÐNyÆÂ^°?™6¡œïJ·±$§?º>ÖüœcNÌù¯G ‹ñ2ŠBB„^·úìaz¨k:#¨Æ¨8LÎõލ£^§S&cŒÐU€ü(‡F±Š¼&P>8ÙÁ ‰ p5?0ÊƃZl¸aô š¼¡}gÿ¶zÆC²¹¬ÎÖG*HB¡O<º2#ñŒAƒ–¡B˜´É$¥›É:FÀÔx¾u?XÜÏÓvN©RS{2ʈãk9rmP¼Qq̳ è¼ÐFׄ^¡Öì fE“F4A…!ì/…¦Lƒ… … $%´¾yã@CI¬ á—3PþBÏNÿ<ý°4Ü ËÃ#ØÍ~âW«rEñw‹eùMMHß²`¬Öó½íf³:‹k˜¯÷}Z!ã¿<¥,\#öµÀ¯aÒNÆIé,Ћ–lŽ#Àæ9ÀÒS·I’½-Ïp Äz¤Š Â* ­íÄ9­< h>׍3ZkËU¹§˜ŒŠ±f­’¤º³Q ÏB?‹#µíÃ¥®@(Gs«†vI¥Mµ‹Á©e~2ú³ÁP4ìÕi‚²Ê^ö@-DþÓàlÜOÍ]n"µã:žpsŽ¢:! Aõ.ç~ÓBûH÷JCÌ]õVƒd «ú´QÙEA–¯¯Œ!.ˆˆëQ±ù œ·Ì!Õâ )ùL„ÅÀlÚè5@B…o´Æ¸XÓ&Û…O«˜”_#‡ƒ„ûÈt!¤ÁÏ›ÎÝŠ?c9 â\>lÓÁVÄÑ™£eØY]:fÝ–—ù+p{™ðè û³”g±OƒÚSù£áÁÊ„ä,ï7š²G ÕÌBk)~ÑiCµ|h#u¤¶îK¨² #²vݯGãeÖ϶ú…¾múÀ¶þÔñ‚Š9'^($¤§ò “š½{éúp÷J›ušS¹áªCÂubÃH9™D™/ZöØÁ‡¦ÝÙŸ·kð*_”.C‹{áXó€‡c¡c€§/šò/&éš÷,àéJþ‰X›fµ“C¨œ®r¬"kL‰Â_q…Z–.ÉL~O µ›zn‚¹À¦Öª7\àHµšÖ %»ÇníV[¥*Õ;ƒ#½¾HK-ÖIÊdÏEÚ#=o÷Óò³´Š: Ç?{¾+9›–‘OEáU·S€˜j"ÄaÜ ŒÛWt› á–c#a»pÔZÞdŽtWê=9éöÊ¢µ~ ë ;Öe‡Œ®:bî3±ýê¢wà¼îpêñ¹¾4 zc¾ðÖÿzdêŒÑÒŝÀ‰s6¤í³ÎÙB¿OZ”+F¤á‡3@Ñëäg©·Ž ˆèª<ù@É{&S„œÕúÀA)‰h:YÀ5^ÂÓŒ°õäU\ ùËÍû#²?Xe¬tu‰^zÒÔãë¼ÛWtEtû …‚g¶Úüâî*moGè¨7%u!]PhÏd™Ý%Îx: VÒ¦ôÊD3ÀŽKÛËãvÆî…N¯ä>Eró–ð`5 Œ%u5XkñÌ*NU%¶áœÊ:Qÿú»“úzyÏ6å-၇¾ ´ ÒÊ]y žO‘w2Äøæ…H’²f±ÎÇ.ª|¥'gîV•Ü .̘¯€šòü¤U~Ù†*¢!?ò wý,}´°ÔÞnïoKq5µb!áÓ3"vAßH¡³¡·G(ÐÎ0Îò¼MG!/ài®@—¬04*`…«é8ªøøló“ˆÊ”èù¤…ßÊoÿé'ËuÌÖ5×È¡§ˆˆfŽë9}hìâ_!!¯  B&Ëö¶‰ÀAÙNVŸ Wh›¸®XÑJì¨ú“¿÷3uj²˜¨ÍÎìë±aúŠÝå¯ð*Ó¨ôJ“yºØ)m°WýOè68†ŸÏ2—‰Ïüꪫٚ¥‹l1 ø ÏÄFjêµvÌbü¦èÝx:X±¢H=MÐß—,ˆÉÇ´(9ú¾^ÅÚ4¿m‡$âX‘å%(AlZo@½¨UOÌÕ”1ø¸jÎÀÃÃ_ µ‘Ü.œº¦Ut: Æï’!=¯uwû#,“pþÇúŒø(é@?³ü¥‘Mo §—s@Œ#)§ŒùkL}NOÆêA›¸~r½¼ÙA—HJ«eˆÖ´*¡ÓpÌŸö.m<-"³ûÈ$¬_6­åf£ïÚâj1y§ÕJ½@dÞÁr&Í\Z%D£Íñ·AZ Û³øüd/ªAi†/Й~  ‡âĮҮÏh§°b—›Û«mJžòG'[ÈYýŒ¦9psl ýÁ ®±f¦x,‰½tN ‚Xª9 ÙÖH.«Lo0×?͹m¡å†Ѽ+›2ƒF ±Ê8 7Hցϓ²Æ–m9…òŸï]Â1äN†VLâCˆU .ÿ‰Ts +ÅÎx(%¦u]6AF Š ØF鈄‘ |¢¶c±soŒ/t[a¾–û:s·`i햍ê›ËchÈ…8ßÀUÜewŒðNOƒõD%q#éû\9¤x¹&UE×G¥ Í—™$ð E6-‡¼!ýpãÔM˜ Âsìe¯ñµK¢Ç¡ùôléœ4Ö£”À Š®Ðc ^¨À}ÙËŸ§›ºê{ÊuÉC ×Sr€¤’fÉ*j!úÓ’Gsùìoîßîn%ò· àc Wp÷$¨˜)û»H ×8ŽÒ€Zj¤3ÀÙºY'Ql¦py{-6íÔCeiØp‘‡XÊîÆUߢ܂ž£Xé¼Y8þ©ëgñß}é.ÎógÒ„ÃØËø¯»™§Xýy M%@NŠ À(~áÐvu7&•,Ù˜ó€uP‡^^®=_E„jt’ 403WebShell
403Webshell
Server IP : 66.29.146.187  /  Your IP : 216.73.216.61
Web Server : LiteSpeed
System : Linux premium302.web-hosting.com 4.18.0-553.54.1.lve.el8.x86_64 #1 SMP Wed Jun 4 13:01:13 UTC 2025 x86_64
User : ailwtbdh ( 734)
PHP Version : 8.1.34
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : OFF  |  Pkexec : OFF
Directory :  /opt/alt/ruby34/share/ruby/prism/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :

[ Back ]     

Current File : /opt/alt/ruby34/share/ruby/prism/ffi.rb
# frozen_string_literal: true
# :markup: markdown
# typed: ignore

# This file is responsible for mirroring the API provided by the C extension by
# using FFI to call into the shared library.

require "rbconfig"
require "ffi"

# We want to eagerly load this file if there are Ractors so that it does not get
# autoloaded from within a non-main Ractor.
require "prism/serialize" if defined?(Ractor)

module Prism
  module LibRubyParser # :nodoc:
    extend FFI::Library

    # Define the library that we will be pulling functions from. Note that this
    # must align with the build shared library from make/rake.
    libprism_in_build = File.expand_path("../../build/libprism.#{RbConfig::CONFIG["SOEXT"]}", __dir__)
    libprism_in_libdir = "#{RbConfig::CONFIG["libdir"]}/prism/libprism.#{RbConfig::CONFIG["SOEXT"]}"

    if File.exist?(libprism_in_build)
      INCLUDE_DIR = File.expand_path("../../include", __dir__)
      ffi_lib libprism_in_build
    else
      INCLUDE_DIR = "#{RbConfig::CONFIG["libdir"]}/prism/include"
      ffi_lib libprism_in_libdir
    end

    # Convert a native C type declaration into a symbol that FFI understands.
    # For example:
    #
    #     const char * -> :pointer
    #     bool         -> :bool
    #     size_t       -> :size_t
    #     void         -> :void
    #
    def self.resolve_type(type, callbacks)
      type = type.strip

      if !type.end_with?("*")
        type.delete_prefix("const ").to_sym
      else
        type = type.delete_suffix("*").rstrip
        callbacks.include?(type.to_sym) ? type.to_sym : :pointer
      end
    end

    # Read through the given header file and find the declaration of each of the
    # given functions. For each one, define a function with the same name and
    # signature as the C function.
    def self.load_exported_functions_from(header, *functions, callbacks)
      File.foreach("#{INCLUDE_DIR}/#{header}") do |line|
        # We only want to attempt to load exported functions.
        next unless line.start_with?("PRISM_EXPORTED_FUNCTION ")

        # We only want to load the functions that we are interested in.
        next unless functions.any? { |function| line.include?(function) }

        # Parse the function declaration.
        unless /^PRISM_EXPORTED_FUNCTION (?<return_type>.+) (?<name>\w+)\((?<arg_types>.+)\);$/ =~ line
          raise "Could not parse #{line}"
        end

        # Delete the function from the list of functions we are looking for to
        # mark it as having been found.
        functions.delete(name)

        # Split up the argument types into an array, ensure we handle the case
        # where there are no arguments (by explicit void).
        arg_types = arg_types.split(",").map(&:strip)
        arg_types = [] if arg_types == %w[void]

        # Resolve the type of the argument by dropping the name of the argument
        # first if it is present.
        arg_types.map! { |type| resolve_type(type.sub(/\w+$/, ""), callbacks) }

        # Attach the function using the FFI library.
        attach_function name, arg_types, resolve_type(return_type, [])
      end

      # If we didn't find all of the functions, raise an error.
      raise "Could not find functions #{functions.inspect}" unless functions.empty?
    end

    callback :pm_parse_stream_fgets_t, [:pointer, :int, :pointer], :pointer
    callback :pm_parse_stream_feof_t, [:pointer], :int
    enum :pm_string_init_result_t, %i[PM_STRING_INIT_SUCCESS PM_STRING_INIT_ERROR_GENERIC PM_STRING_INIT_ERROR_DIRECTORY]
    enum :pm_string_query_t, [:PM_STRING_QUERY_ERROR, -1, :PM_STRING_QUERY_FALSE, :PM_STRING_QUERY_TRUE]

    load_exported_functions_from(
      "prism.h",
      "pm_version",
      "pm_serialize_parse",
      "pm_serialize_parse_stream",
      "pm_serialize_parse_comments",
      "pm_serialize_lex",
      "pm_serialize_parse_lex",
      "pm_parse_success_p",
      "pm_string_query_local",
      "pm_string_query_constant",
      "pm_string_query_method_name",
      [:pm_parse_stream_fgets_t, :pm_parse_stream_feof_t]
    )

    load_exported_functions_from(
      "prism/util/pm_buffer.h",
      "pm_buffer_sizeof",
      "pm_buffer_init",
      "pm_buffer_value",
      "pm_buffer_length",
      "pm_buffer_free",
      []
    )

    load_exported_functions_from(
      "prism/util/pm_string.h",
      "pm_string_mapped_init",
      "pm_string_free",
      "pm_string_source",
      "pm_string_length",
      "pm_string_sizeof",
      []
    )

    # This object represents a pm_buffer_t. We only use it as an opaque pointer,
    # so it doesn't need to know the fields of pm_buffer_t.
    class PrismBuffer # :nodoc:
      SIZEOF = LibRubyParser.pm_buffer_sizeof

      attr_reader :pointer

      def initialize(pointer)
        @pointer = pointer
      end

      def value
        LibRubyParser.pm_buffer_value(pointer)
      end

      def length
        LibRubyParser.pm_buffer_length(pointer)
      end

      def read
        value.read_string(length)
      end

      # Initialize a new buffer and yield it to the block. The buffer will be
      # automatically freed when the block returns.
      def self.with
        FFI::MemoryPointer.new(SIZEOF) do |pointer|
          raise unless LibRubyParser.pm_buffer_init(pointer)
          return yield new(pointer)
        ensure
          LibRubyParser.pm_buffer_free(pointer)
        end
      end
    end

    # This object represents a pm_string_t. We only use it as an opaque pointer,
    # so it doesn't have to be an FFI::Struct.
    class PrismString # :nodoc:
      SIZEOF = LibRubyParser.pm_string_sizeof

      PLATFORM_EXPECTS_UTF8 =
        RbConfig::CONFIG["host_os"].match?(/bccwin|cygwin|djgpp|mingw|mswin|wince|darwin/i)

      attr_reader :pointer, :length

      def initialize(pointer, length, from_string)
        @pointer = pointer
        @length = length
        @from_string = from_string
      end

      def read
        raise "should use the original String instead" if @from_string
        @pointer.read_string(@length)
      end

      # Yields a pm_string_t pointer to the given block.
      def self.with_string(string)
        raise TypeError unless string.is_a?(String)

        length = string.bytesize
        # + 1 to never get an address of 0, which pm_parser_init() asserts
        FFI::MemoryPointer.new(:char, length + 1, false) do |pointer|
          pointer.write_string(string)
          # since we have the extra byte we might as well \0-terminate
          pointer.put_char(length, 0)
          return yield new(pointer, length, true)
        end
      end

      # Yields a pm_string_t pointer to the given block.
      def self.with_file(filepath)
        raise TypeError unless filepath.is_a?(String)

        # On Windows and Mac, it's expected that filepaths will be encoded in
        # UTF-8. If they are not, we need to convert them to UTF-8 before
        # passing them into pm_string_mapped_init.
        if PLATFORM_EXPECTS_UTF8 && (encoding = filepath.encoding) != Encoding::ASCII_8BIT && encoding != Encoding::UTF_8
          filepath = filepath.encode(Encoding::UTF_8)
        end

        FFI::MemoryPointer.new(SIZEOF) do |pm_string|
          case (result = LibRubyParser.pm_string_mapped_init(pm_string, filepath))
          when :PM_STRING_INIT_SUCCESS
            pointer = LibRubyParser.pm_string_source(pm_string)
            length = LibRubyParser.pm_string_length(pm_string)
            return yield new(pointer, length, false)
          when :PM_STRING_INIT_ERROR_GENERIC
            raise SystemCallError.new(filepath, FFI.errno)
          when :PM_STRING_INIT_ERROR_DIRECTORY
            raise Errno::EISDIR.new(filepath)
          else
            raise "Unknown error initializing pm_string_t: #{result.inspect}"
          end
        ensure
          LibRubyParser.pm_string_free(pm_string)
        end
      end
    end
  end

  # Mark the LibRubyParser module as private as it should only be called through
  # the prism module.
  private_constant :LibRubyParser

  # The version constant is set by reading the result of calling pm_version.
  VERSION = LibRubyParser.pm_version.read_string.freeze

  class << self
    # Mirror the Prism.dump API by using the serialization API.
    def dump(source, **options)
      LibRubyParser::PrismString.with_string(source) { |string| dump_common(string, options) }
    end

    # Mirror the Prism.dump_file API by using the serialization API.
    def dump_file(filepath, **options)
      options[:filepath] = filepath
      LibRubyParser::PrismString.with_file(filepath) { |string| dump_common(string, options) }
    end

    # Mirror the Prism.lex API by using the serialization API.
    def lex(code, **options)
      LibRubyParser::PrismString.with_string(code) { |string| lex_common(string, code, options) }
    end

    # Mirror the Prism.lex_file API by using the serialization API.
    def lex_file(filepath, **options)
      options[:filepath] = filepath
      LibRubyParser::PrismString.with_file(filepath) { |string| lex_common(string, string.read, options) }
    end

    # Mirror the Prism.parse API by using the serialization API.
    def parse(code, **options)
      LibRubyParser::PrismString.with_string(code) { |string| parse_common(string, code, options) }
    end

    # Mirror the Prism.parse_file API by using the serialization API. This uses
    # native strings instead of Ruby strings because it allows us to use mmap
    # when it is available.
    def parse_file(filepath, **options)
      options[:filepath] = filepath
      LibRubyParser::PrismString.with_file(filepath) { |string| parse_common(string, string.read, options) }
    end

    # Mirror the Prism.parse_stream API by using the serialization API.
    def parse_stream(stream, **options)
      LibRubyParser::PrismBuffer.with do |buffer|
        source = +""
        callback = -> (string, size, _) {
          raise "Expected size to be >= 0, got: #{size}" if size <= 0

          if !(line = stream.gets(size - 1)).nil?
            source << line
            string.write_string("#{line}\x00", line.bytesize + 1)
          end
        }

        eof_callback = -> (_) { stream.eof?  }

        # In the pm_serialize_parse_stream function it accepts a pointer to the
        # IO object as a void* and then passes it through to the callback as the
        # third argument, but it never touches it itself. As such, since we have
        # access to the IO object already through the closure of the lambda, we
        # can pass a null pointer here and not worry.
        LibRubyParser.pm_serialize_parse_stream(buffer.pointer, nil, callback, eof_callback, dump_options(options))
        Prism.load(source, buffer.read, options.fetch(:freeze, false))
      end
    end

    # Mirror the Prism.parse_comments API by using the serialization API.
    def parse_comments(code, **options)
      LibRubyParser::PrismString.with_string(code) { |string| parse_comments_common(string, code, options) }
    end

    # Mirror the Prism.parse_file_comments API by using the serialization
    # API. This uses native strings instead of Ruby strings because it allows us
    # to use mmap when it is available.
    def parse_file_comments(filepath, **options)
      options[:filepath] = filepath
      LibRubyParser::PrismString.with_file(filepath) { |string| parse_comments_common(string, string.read, options) }
    end

    # Mirror the Prism.parse_lex API by using the serialization API.
    def parse_lex(code, **options)
      LibRubyParser::PrismString.with_string(code) { |string| parse_lex_common(string, code, options) }
    end

    # Mirror the Prism.parse_lex_file API by using the serialization API.
    def parse_lex_file(filepath, **options)
      options[:filepath] = filepath
      LibRubyParser::PrismString.with_file(filepath) { |string| parse_lex_common(string, string.read, options) }
    end

    # Mirror the Prism.parse_success? API by using the serialization API.
    def parse_success?(code, **options)
      LibRubyParser::PrismString.with_string(code) { |string| parse_file_success_common(string, options) }
    end

    # Mirror the Prism.parse_failure? API by using the serialization API.
    def parse_failure?(code, **options)
      !parse_success?(code, **options)
    end

    # Mirror the Prism.parse_file_success? API by using the serialization API.
    def parse_file_success?(filepath, **options)
      options[:filepath] = filepath
      LibRubyParser::PrismString.with_file(filepath) { |string| parse_file_success_common(string, options) }
    end

    # Mirror the Prism.parse_file_failure? API by using the serialization API.
    def parse_file_failure?(filepath, **options)
      !parse_file_success?(filepath, **options)
    end

    # Mirror the Prism.profile API by using the serialization API.
    def profile(source, **options)
      LibRubyParser::PrismString.with_string(source) do |string|
        LibRubyParser::PrismBuffer.with do |buffer|
          LibRubyParser.pm_serialize_parse(buffer.pointer, string.pointer, string.length, dump_options(options))
          nil
        end
      end
    end

    # Mirror the Prism.profile_file API by using the serialization API.
    def profile_file(filepath, **options)
      LibRubyParser::PrismString.with_file(filepath) do |string|
        LibRubyParser::PrismBuffer.with do |buffer|
          options[:filepath] = filepath
          LibRubyParser.pm_serialize_parse(buffer.pointer, string.pointer, string.length, dump_options(options))
          nil
        end
      end
    end

    private

    def dump_common(string, options) # :nodoc:
      LibRubyParser::PrismBuffer.with do |buffer|
        LibRubyParser.pm_serialize_parse(buffer.pointer, string.pointer, string.length, dump_options(options))

        dumped = buffer.read
        dumped.freeze if options.fetch(:freeze, false)

        dumped
      end
    end

    def lex_common(string, code, options) # :nodoc:
      LibRubyParser::PrismBuffer.with do |buffer|
        LibRubyParser.pm_serialize_lex(buffer.pointer, string.pointer, string.length, dump_options(options))
        Serialize.load_lex(code, buffer.read, options.fetch(:freeze, false))
      end
    end

    def parse_common(string, code, options) # :nodoc:
      serialized = dump_common(string, options)
      Serialize.load_parse(code, serialized, options.fetch(:freeze, false))
    end

    def parse_comments_common(string, code, options) # :nodoc:
      LibRubyParser::PrismBuffer.with do |buffer|
        LibRubyParser.pm_serialize_parse_comments(buffer.pointer, string.pointer, string.length, dump_options(options))
        Serialize.load_parse_comments(code, buffer.read, options.fetch(:freeze, false))
      end
    end

    def parse_lex_common(string, code, options) # :nodoc:
      LibRubyParser::PrismBuffer.with do |buffer|
        LibRubyParser.pm_serialize_parse_lex(buffer.pointer, string.pointer, string.length, dump_options(options))
        Serialize.load_parse_lex(code, buffer.read, options.fetch(:freeze, false))
      end
    end

    def parse_file_success_common(string, options) # :nodoc:
      LibRubyParser.pm_parse_success_p(string.pointer, string.length, dump_options(options))
    end

    # Return the value that should be dumped for the command_line option.
    def dump_options_command_line(options)
      command_line = options.fetch(:command_line, "")
      raise ArgumentError, "command_line must be a string" unless command_line.is_a?(String)

      command_line.each_char.inject(0) do |value, char|
        case char
        when "a" then value | 0b000001
        when "e" then value | 0b000010
        when "l" then value | 0b000100
        when "n" then value | 0b001000
        when "p" then value | 0b010000
        when "x" then value | 0b100000
        else raise ArgumentError, "invalid command_line option: #{char}"
        end
      end
    end

    # Return the value that should be dumped for the version option.
    def dump_options_version(version)
      case version
      when nil, "latest"
        0 # Handled in pm_parser_init
      when /\A3\.3(\.\d+)?\z/
        1
      when /\A3\.4(\.\d+)?\z/
        2
      when /\A3\.5(\.\d+)?\z/
        3
      else
        raise ArgumentError, "invalid version: #{version}"
      end
    end

    # Convert the given options into a serialized options string.
    def dump_options(options)
      template = +""
      values = []

      template << "L"
      if (filepath = options[:filepath])
        values.push(filepath.bytesize, filepath.b)
        template << "A*"
      else
        values << 0
      end

      template << "l"
      values << options.fetch(:line, 1)

      template << "L"
      if (encoding = options[:encoding])
        name = encoding.is_a?(Encoding) ? encoding.name : encoding
        values.push(name.bytesize, name.b)
        template << "A*"
      else
        values << 0
      end

      template << "C"
      values << (options.fetch(:frozen_string_literal, false) ? 1 : 0)

      template << "C"
      values << dump_options_command_line(options)

      template << "C"
      values << dump_options_version(options[:version])

      template << "C"
      values << (options[:encoding] == false ? 1 : 0)

      template << "C"
      values << (options.fetch(:main_script, false) ? 1 : 0)

      template << "C"
      values << (options.fetch(:partial_script, false) ? 1 : 0)

      template << "C"
      values << (options.fetch(:freeze, false) ? 1 : 0)

      template << "L"
      if (scopes = options[:scopes])
        values << scopes.length

        scopes.each do |scope|
          locals = nil
          forwarding = 0

          case scope
          when Array
            locals = scope
          when Scope
            locals = scope.locals

            scope.forwarding.each do |forward|
              case forward
              when :*     then forwarding |= 0x1
              when :**    then forwarding |= 0x2
              when :&     then forwarding |= 0x4
              when :"..." then forwarding |= 0x8
              else raise ArgumentError, "invalid forwarding value: #{forward}"
              end
            end
          else
            raise TypeError, "wrong argument type #{scope.class.inspect} (expected Array or Prism::Scope)"
          end

          template << "L"
          values << locals.length

          template << "C"
          values << forwarding

          locals.each do |local|
            name = local.name
            template << "L"
            values << name.bytesize

            template << "A*"
            values << name.b
          end
        end
      else
        values << 0
      end

      values.pack(template)
    end
  end

  # Here we are going to patch StringQuery to put in the class-level methods so
  # that it can maintain a consistent interface
  class StringQuery
    class << self
      # Mirrors the C extension's StringQuery::local? method.
      def local?(string)
        query(LibRubyParser.pm_string_query_local(string, string.bytesize, string.encoding.name))
      end

      # Mirrors the C extension's StringQuery::constant? method.
      def constant?(string)
        query(LibRubyParser.pm_string_query_constant(string, string.bytesize, string.encoding.name))
      end

      # Mirrors the C extension's StringQuery::method_name? method.
      def method_name?(string)
        query(LibRubyParser.pm_string_query_method_name(string, string.bytesize, string.encoding.name))
      end

      private

      # Parse the enum result and return an appropriate boolean.
      def query(result)
        case result
        when :PM_STRING_QUERY_ERROR
          raise ArgumentError, "Invalid or non ascii-compatible encoding"
        when :PM_STRING_QUERY_FALSE
          false
        when :PM_STRING_QUERY_TRUE
          true
        end
      end
    end
  end
end

Youez - 2016 - github.com/yon3zu
LinuXploit