xs/MOP.xs

   1 #include "mop.h"
   2
   3 SV *mop_method_metaclass;
   4 SV *mop_associated_metaclass;
   5 SV *mop_wrap;
   6
   7 static bool
   8 find_method (const char *key, STRLEN keylen, SV *val, void *ud)
   9 {
  10     bool *found_method = (bool *)ud;
  11     *found_method = TRUE;
  12     return FALSE;
  13 }
  14
  15 EXTERN_C XS(boot_Class__MOP__Package);
  16 EXTERN_C XS(boot_Class__MOP__Class);
  17 EXTERN_C XS(boot_Class__MOP__Attribute);
  18 EXTERN_C XS(boot_Class__MOP__Method);
  19
  20 MODULE = Class::MOP   PACKAGE = Class::MOP
  21
  22 PROTOTYPES: DISABLE
  23
  24 BOOT:
  25     mop_prehash_keys();
  26
  27     mop_method_metaclass     = newSVpvs("method_metaclass");
  28     mop_wrap                 = newSVpvs("wrap");
  29     mop_associated_metaclass = newSVpvs("associated_metaclass");
  30
  31     MOP_CALL_BOOT (boot_Class__MOP__Package);
  32     MOP_CALL_BOOT (boot_Class__MOP__Class);
  33     MOP_CALL_BOOT (boot_Class__MOP__Attribute);
  34     MOP_CALL_BOOT (boot_Class__MOP__Method);
  35
  36 # use prototype here to be compatible with get_code_info from Sub::Identify
  37 void
  38 get_code_info(coderef)
  39     SV *coderef
  40     PROTOTYPE: $
  41     PREINIT:
  42         char *pkg  = NULL;
  43         char *name = NULL;
  44     PPCODE:
  45         if (mop_get_code_info(coderef, &pkg, &name)) {
  46             EXTEND(SP, 2);
  47             PUSHs(newSVpv(pkg, 0));
  48             PUSHs(newSVpv(name, 0));
  49         }
  50
  51 # This is some pretty grotty logic. It _should_ be parallel to the
  52 # pure Perl version in lib/Class/MOP.pm, so if you want to understand
  53 # it we suggest you start there.
  54 void
  55 is_class_loaded(klass=&PL_sv_undef)
  56     SV *klass
  57     PREINIT:
  58         HV *stash;
  59         bool found_method = FALSE;
  60     PPCODE:
  61         if (!SvPOK(klass) || !SvCUR(klass)) {
  62             XSRETURN_NO;
  63         }
  64
  65         stash = gv_stashsv(klass, 0);
  66         if (!stash) {
  67             XSRETURN_NO;
  68         }
  69
  70         if (hv_exists_ent (stash, KEY_FOR(VERSION), HASH_FOR(VERSION))) {
  71             HE *version = hv_fetch_ent(stash, KEY_FOR(VERSION), 0, HASH_FOR(VERSION));
  72             SV *version_sv;
  73             if (version && HeVAL(version) && (version_sv = GvSV(HeVAL(version)))) {
  74                 if (SvROK(version_sv)) {
  75                     SV *version_sv_ref = SvRV(version_sv);
  76
  77                     if (SvOK(version_sv_ref)) {
  78                         XSRETURN_YES;
  79                     }
  80                 }
  81                 else if (SvOK(version_sv)) {
  82                     XSRETURN_YES;
  83                 }
  84             }
  85         }
  86
  87         if (hv_exists_ent (stash, KEY_FOR(ISA), HASH_FOR(ISA))) {
  88             HE *isa = hv_fetch_ent(stash, KEY_FOR(ISA), 0, HASH_FOR(ISA));
  89             if (isa && HeVAL(isa) && GvAV(HeVAL(isa))) {
  90                 XSRETURN_YES;
  91             }
  92         }
  93
  94         mop_get_package_symbols(stash, TYPE_FILTER_CODE, find_method, &found_method);
  95         if (found_method) {
  96             XSRETURN_YES;
  97         }
  98
  99         XSRETURN_NO;