GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
403Webshell
Server IP : 104.21.83.152  /  Your IP : 216.73.216.66
Web Server : LiteSpeed
System : Linux premium229.web-hosting.com 4.18.0-553.45.1.lve.el8.x86_64 #1 SMP Wed Mar 26 12:08:09 UTC 2025 x86_64
User : akhalid ( 749)
PHP Version : 8.3.22
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : OFF  |  Pkexec : OFF
Directory :  /opt/alt/ruby30/include/ruby/internal/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :

[ Back ]     

Current File : /opt/alt/ruby30/include/ruby/internal/scan_args.h
#ifndef RBIMPL_SCAN_ARGS_H                           /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_SCAN_ARGS_H
/**
 * @file
 * @author     Ruby developers <[email protected]>
 * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
 *             Permission  is hereby  granted,  to  either redistribute  and/or
 *             modify this file, provided that  the conditions mentioned in the
 *             file COPYING are met.  Consult the file for details.
 * @warning    Symbols   prefixed  with   either  `RBIMPL`   or  `rbimpl`   are
 *             implementation details.   Don't take  them as canon.  They could
 *             rapidly appear then vanish.  The name (path) of this header file
 *             is also an  implementation detail.  Do not expect  it to persist
 *             at the place it is now.  Developers are free to move it anywhere
 *             anytime at will.
 * @note       To  ruby-core:  remember  that   this  header  can  be  possibly
 *             recursively included  from extension  libraries written  in C++.
 *             Do not  expect for  instance `__VA_ARGS__` is  always available.
 *             We assume C99  for ruby itself but we don't  assume languages of
 *             extension libraries. They could be written in C++98.
 * @brief      Compile-time static implementation of ::rb_scan_args().
 *
 * This  is a  beast.  It  statically analyses  the argument  spec string,  and
 * expands the assignment of variables into dedicated codes.
 */
#include "ruby/internal/attr/diagnose_if.h"
#include "ruby/internal/attr/error.h"
#include "ruby/internal/attr/forceinline.h"
#include "ruby/internal/attr/noreturn.h"
#include "ruby/internal/config.h"
#include "ruby/internal/dllexport.h"
#include "ruby/internal/has/attribute.h"
#include "ruby/internal/intern/array.h" /* rb_ary_new_from_values */
#include "ruby/internal/intern/error.h" /* rb_error_arity */
#include "ruby/internal/intern/hash.h"  /* rb_hash_dup */
#include "ruby/internal/intern/proc.h"  /* rb_block_proc */
#include "ruby/internal/iterator.h"     /* rb_block_given_p / rb_keyword_given_p */
#include "ruby/internal/static_assert.h"
#include "ruby/internal/stdbool.h"
#include "ruby/internal/value.h"
#include "ruby/assert.h"

#define RB_SCAN_ARGS_PASS_CALLED_KEYWORDS 0
#define RB_SCAN_ARGS_KEYWORDS 1
#define RB_SCAN_ARGS_LAST_HASH_KEYWORDS 3
#define RB_NO_KEYWORDS 0
#define RB_PASS_KEYWORDS 1
#define RB_PASS_CALLED_KEYWORDS rb_keyword_given_p()
/* rb_scan_args() format allows ':' for optional hash */
#define HAVE_RB_SCAN_ARGS_OPTIONAL_HASH 1

RBIMPL_SYMBOL_EXPORT_BEGIN()
int rb_scan_args(int, const VALUE*, const char*, ...);
int rb_scan_args_kw(int, int, const VALUE*, const char*, ...);

RBIMPL_ATTR_ERROR(("bad scan arg format"))
void rb_scan_args_bad_format(const char*);

RBIMPL_ATTR_ERROR(("variable argument length doesn't match"))
void rb_scan_args_length_mismatch(const char*,int);

RBIMPL_SYMBOL_EXPORT_END()

/* If we could use constexpr the following macros could be inline functions
 * ... but sadly we cannot. */

#define rb_scan_args_isdigit(c) (RBIMPL_CAST((unsigned char)((c)-'0'))<10)

#define rb_scan_args_count_end(fmt, ofs, vari) \
    ((fmt)[ofs] ? -1 : (vari))

#define rb_scan_args_count_block(fmt, ofs, vari) \
    ((fmt)[ofs]!='&' ? \
     rb_scan_args_count_end(fmt, ofs, vari) : \
     rb_scan_args_count_end(fmt, (ofs)+1, (vari)+1))

#define rb_scan_args_count_hash(fmt, ofs, vari) \
    ((fmt)[ofs]!=':' ? \
     rb_scan_args_count_block(fmt, ofs, vari) : \
     rb_scan_args_count_block(fmt, (ofs)+1, (vari)+1))

#define rb_scan_args_count_trail(fmt, ofs, vari) \
    (!rb_scan_args_isdigit((fmt)[ofs]) ? \
     rb_scan_args_count_hash(fmt, ofs, vari) : \
     rb_scan_args_count_hash(fmt, (ofs)+1, (vari)+((fmt)[ofs]-'0')))

#define rb_scan_args_count_var(fmt, ofs, vari) \
    ((fmt)[ofs]!='*' ? \
     rb_scan_args_count_trail(fmt, ofs, vari) : \
     rb_scan_args_count_trail(fmt, (ofs)+1, (vari)+1))

#define rb_scan_args_count_opt(fmt, ofs, vari) \
    (!rb_scan_args_isdigit((fmt)[ofs]) ? \
     rb_scan_args_count_var(fmt, ofs, vari) : \
     rb_scan_args_count_var(fmt, (ofs)+1, (vari)+(fmt)[ofs]-'0'))

#define rb_scan_args_count_lead(fmt, ofs, vari) \
    (!rb_scan_args_isdigit((fmt)[ofs]) ? \
     rb_scan_args_count_var(fmt, ofs, vari) : \
     rb_scan_args_count_opt(fmt, (ofs)+1, (vari)+(fmt)[ofs]-'0'))

#define rb_scan_args_count(fmt) rb_scan_args_count_lead(fmt, 0, 0)

#if RBIMPL_HAS_ATTRIBUTE(diagnose_if)
# /* Assertions done in the attribute. */
# define rb_scan_args_verify(fmt, varc) RBIMPL_ASSERT_NOTHING
#else
# /* At  one sight  it _seems_  the expressions  below could  be written  using
#  * static assrtions.  The reality is no, they don't.  Because fmt is a string
#  * literal, any operations  against fmt cannot produce  the "integer constant
#  * expression"s, as  defined in ISO/IEC  9899:2018 section 6.6  paragraph #6.
#  * Static assertions  need such  integer constant  expressions as  defined in
#  * ISO/IEC 9899:2018 section 6.7.10 paragraph #3.
#  *
#  * GCC nonetheless constant-folds this into no-op, though. */
# define rb_scan_args_verify(fmt, varc) \
    (sizeof(char[1-2*(rb_scan_args_count(fmt)<0)])!=1 ? \
     rb_scan_args_bad_format(fmt) : \
     sizeof(char[1-2*(rb_scan_args_count(fmt)!=(varc))])!=1 ? \
     rb_scan_args_length_mismatch(fmt, varc) : \
     RBIMPL_ASSERT_NOTHING)
#endif

static inline bool
rb_scan_args_keyword_p(int kw_flag, VALUE last)
{
    switch (kw_flag) {
      case RB_SCAN_ARGS_PASS_CALLED_KEYWORDS:
        return !! rb_keyword_given_p();
      case RB_SCAN_ARGS_KEYWORDS:
        return true;
      case RB_SCAN_ARGS_LAST_HASH_KEYWORDS:
        return RB_TYPE_P(last, T_HASH);
      default:
        return false;
    }
}

RBIMPL_ATTR_FORCEINLINE()
static bool
rb_scan_args_lead_p(const char *fmt)
{
    return rb_scan_args_isdigit(fmt[0]);
}

RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_n_lead(const char *fmt)
{
    return (rb_scan_args_lead_p(fmt) ? fmt[0]-'0' : 0);
}

RBIMPL_ATTR_FORCEINLINE()
static bool
rb_scan_args_opt_p(const char *fmt)
{
    return (rb_scan_args_lead_p(fmt) && rb_scan_args_isdigit(fmt[1]));
}

RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_n_opt(const char *fmt)
{
    return (rb_scan_args_opt_p(fmt) ? fmt[1]-'0' : 0);
}

RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_var_idx(const char *fmt)
{
    return (!rb_scan_args_lead_p(fmt) ? 0 : !rb_scan_args_isdigit(fmt[1]) ? 1 : 2);
}

RBIMPL_ATTR_FORCEINLINE()
static bool
rb_scan_args_f_var(const char *fmt)
{
    return (fmt[rb_scan_args_var_idx(fmt)]=='*');
}

RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_trail_idx(const char *fmt)
{
    const int idx = rb_scan_args_var_idx(fmt);
    return idx+(fmt[idx]=='*');
}

RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_n_trail(const char *fmt)
{
    const int idx = rb_scan_args_trail_idx(fmt);
    return (rb_scan_args_isdigit(fmt[idx]) ? fmt[idx]-'0' : 0);
}

RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_hash_idx(const char *fmt)
{
    const int idx = rb_scan_args_trail_idx(fmt);
    return idx+rb_scan_args_isdigit(fmt[idx]);
}

RBIMPL_ATTR_FORCEINLINE()
static bool
rb_scan_args_f_hash(const char *fmt)
{
    return (fmt[rb_scan_args_hash_idx(fmt)]==':');
}

RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_block_idx(const char *fmt)
{
    const int idx = rb_scan_args_hash_idx(fmt);
    return idx+(fmt[idx]==':');
}

RBIMPL_ATTR_FORCEINLINE()
static bool
rb_scan_args_f_block(const char *fmt)
{
    return (fmt[rb_scan_args_block_idx(fmt)]=='&');
}

# if 0
RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_end_idx(const char *fmt)
{
    const int idx = rb_scan_args_block_idx(fmt);
    return idx+(fmt[idx]=='&');
}
# endif

/* NOTE: Use `char *fmt` instead of `const char *fmt` because of clang's bug*/
/* https://bugs.llvm.org/show_bug.cgi?id=38095 */
# define rb_scan_args0(argc, argv, fmt, varc, vars) \
    rb_scan_args_set(RB_SCAN_ARGS_PASS_CALLED_KEYWORDS, argc, argv, \
                     rb_scan_args_n_lead(fmt), \
                     rb_scan_args_n_opt(fmt), \
                     rb_scan_args_n_trail(fmt), \
                     rb_scan_args_f_var(fmt), \
                     rb_scan_args_f_hash(fmt), \
                     rb_scan_args_f_block(fmt), \
                     (rb_scan_args_verify(fmt, varc), vars), (char *)fmt, varc)
# define rb_scan_args_kw0(kw_flag, argc, argv, fmt, varc, vars) \
    rb_scan_args_set(kw_flag, argc, argv, \
                     rb_scan_args_n_lead(fmt), \
                     rb_scan_args_n_opt(fmt), \
                     rb_scan_args_n_trail(fmt), \
                     rb_scan_args_f_var(fmt), \
                     rb_scan_args_f_hash(fmt), \
                     rb_scan_args_f_block(fmt), \
                     (rb_scan_args_verify(fmt, varc), vars), (char *)fmt, varc)

RBIMPL_ATTR_FORCEINLINE()
static int
rb_scan_args_set(int kw_flag, int argc, const VALUE *argv,
                 int n_lead, int n_opt, int n_trail,
                 bool f_var, bool f_hash, bool f_block,
                 VALUE *vars[], RB_UNUSED_VAR(const char *fmt), RB_UNUSED_VAR(int varc))
    RBIMPL_ATTR_DIAGNOSE_IF(rb_scan_args_count(fmt) <  0,    "bad scan arg format",                    "error")
    RBIMPL_ATTR_DIAGNOSE_IF(rb_scan_args_count(fmt) != varc, "variable argument length doesn't match", "error")
{
    int i, argi = 0, vari = 0;
    VALUE *var, hash = Qnil;
#define rb_scan_args_next_param() vars[vari++]
    const int n_mand = n_lead + n_trail;

    /* capture an option hash - phase 1: pop from the argv */
    if (f_hash && argc > 0) {
        VALUE last = argv[argc - 1];
        if (rb_scan_args_keyword_p(kw_flag, last)) {
            hash = rb_hash_dup(last);
            argc--;
        }
    }

    if (argc < n_mand) {
        goto argc_error;
    }

    /* capture leading mandatory arguments */
    for (i = 0; i < n_lead; i++) {
        var = rb_scan_args_next_param();
        if (var) *var = argv[argi];
        argi++;
    }

    /* capture optional arguments */
    for (i = 0; i < n_opt; i++) {
        var = rb_scan_args_next_param();
        if (argi < argc - n_trail) {
            if (var) *var = argv[argi];
            argi++;
        }
        else {
            if (var) *var = Qnil;
        }
    }

    /* capture variable length arguments */
    if (f_var) {
        int n_var = argc - argi - n_trail;

        var = rb_scan_args_next_param();
        if (0 < n_var) {
            if (var) *var = rb_ary_new_from_values(n_var, &argv[argi]);
            argi += n_var;
        }
        else {
            if (var) *var = rb_ary_new();
        }
    }

    /* capture trailing mandatory arguments */
    for (i = 0; i < n_trail; i++) {
        var = rb_scan_args_next_param();
        if (var) *var = argv[argi];
        argi++;
    }

    /* capture an option hash - phase 2: assignment */
    if (f_hash) {
        var = rb_scan_args_next_param();
        if (var) *var = hash;
    }

    /* capture iterator block */
    if (f_block) {
        var = rb_scan_args_next_param();
        if (rb_block_given_p()) {
            *var = rb_block_proc();
        }
        else {
            *var = Qnil;
        }
    }

    if (argi == argc) {
        return argc;
    }

  argc_error:
    rb_error_arity(argc, n_mand, f_var ? UNLIMITED_ARGUMENTS : n_mand + n_opt);
    UNREACHABLE_RETURN(-1);
#undef rb_scan_args_next_param
}

#if ! defined(HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR_CONSTANT_P)
# /* skip */

#elif ! defined(HAVE_VA_ARGS_MACRO)
# /* skip */

#elif ! defined(__OPTIMIZE__)
# /* skip */

#elif defined(HAVE___VA_OPT__)
# define rb_scan_args(argc, argvp, fmt, ...)                  \
    __builtin_choose_expr(                                    \
        __builtin_constant_p(fmt),                            \
        rb_scan_args0(                                        \
            argc, argvp, fmt,                                 \
            (sizeof((VALUE*[]){__VA_ARGS__})/sizeof(VALUE*)), \
            ((VALUE*[]){__VA_ARGS__})),                       \
        (rb_scan_args)(argc, argvp, fmt __VA_OPT__(, __VA_ARGS__)))
# define rb_scan_args_kw(kw_flag, argc, argvp, fmt, ...)      \
    __builtin_choose_expr(                                    \
        __builtin_constant_p(fmt),                            \
        rb_scan_args_kw0(                                     \
            kw_flag, argc, argvp, fmt,                        \
            (sizeof((VALUE*[]){__VA_ARGS__})/sizeof(VALUE*)), \
            ((VALUE*[]){__VA_ARGS__})),                       \
        (rb_scan_args_kw)(kw_flag, argc, argvp, fmt __VA_OPT__(, __VA_ARGS__)))

#elif defined(__STRICT_ANSI__)
# /* skip */

#elif defined(__GNUC__)
# define rb_scan_args(argc, argvp, fmt, ...)                  \
    __builtin_choose_expr(                                    \
        __builtin_constant_p(fmt),                            \
        rb_scan_args0(                                        \
            argc, argvp, fmt,                                 \
            (sizeof((VALUE*[]){__VA_ARGS__})/sizeof(VALUE*)), \
            ((VALUE*[]){__VA_ARGS__})),                       \
        (rb_scan_args)(argc, argvp, fmt, __VA_ARGS__))
# define rb_scan_args_kw(kw_flag, argc, argvp, fmt, ...)      \
    __builtin_choose_expr(                                    \
        __builtin_constant_p(fmt),                            \
        rb_scan_args_kw0(                                     \
            kw_flag, argc, argvp, fmt,                        \
            (sizeof((VALUE*[]){__VA_ARGS__})/sizeof(VALUE*)), \
            ((VALUE*[]){__VA_ARGS__})),                       \
        (rb_scan_args_kw)(kw_flag, argc, argvp, fmt, __VA_ARGS__ /**/))
#endif

#endif /* RBIMPL_SCAN_ARGS_H */

Youez - 2016 - github.com/yon3zu
LinuXploit