MOP.xs

   1
   2 #include "EXTERN.h"
   3 #include "perl.h"
   4 #include "XSUB.h"
   5
   6 #define NEED_sv_2pv_flags
   7 #define NEED_sv_2pv_nolen
   8 #include "ppport.h"
   9
  10 SV *key_name;
  11 U32 hash_name;
  12
  13 SV *key_package;
  14 U32 hash_package;
  15
  16 SV *key_body;
  17 U32 hash_body;
  18
  19 /*
  20 get_code_info:
  21   Pass in a coderef, returns:
  22   [ $pkg_name, $coderef_name ] ie:
  23   [ 'Foo::Bar', 'new' ]
  24 */
  25
  26 MODULE = Class::MOP   PACKAGE = Class::MOP
  27
  28 BOOT:
  29     key_name = newSVpvs("name");
  30     key_body = newSVpvs("body");
  31     key_package = newSVpvs("package");
  32
  33     PERL_HASH(hash_name, "name", 4);
  34     PERL_HASH(hash_body, "body", 4);
  35     PERL_HASH(hash_package, "package", 7);
  36
  37
  38 PROTOTYPES: ENABLE
  39
  40
  41 void
  42 get_code_info(coderef)
  43   SV* coderef
  44   PREINIT:
  45     char* name;
  46     char* pkg;
  47   PPCODE:
  48     if( SvOK(coderef) && SvROK(coderef) && SvTYPE(SvRV(coderef)) == SVt_PVCV){
  49       coderef = SvRV(coderef);
  50       /* I think this only gets triggered with a mangled coderef, but if
  51          we hit it without the guard, we segfault. The slightly odd return
  52          value strikes me as an improvement (mst)
  53       */
  54 #ifdef isGV_with_GP
  55       if ( isGV_with_GP(CvGV(coderef))) {
  56 #endif
  57         pkg     = HvNAME( GvSTASH(CvGV(coderef)) );
  58         name    = GvNAME( CvGV(coderef) );
  59 #ifdef isGV_with_GP
  60       } else {
  61         pkg     = "__UNKNOWN__";
  62         name    = "__ANON__";
  63       }
  64 #endif
  65
  66       EXTEND(SP, 2);
  67       PUSHs(newSVpvn(pkg, strlen(pkg)));
  68       PUSHs(newSVpvn(name, strlen(name)));
  69     }
  70
  71
  72 MODULE = Class::MOP   PACKAGE = Class::MOP::Package
  73
  74 void
  75 get_all_package_symbols(self, ...)
  76     SV *self
  77     PROTOTYPE: $;$
  78     PREINIT:
  79         HV *stash = NULL;
  80         SV *type_filter = NULL;
  81         register HE *he;
  82     PPCODE:
  83
  84         switch ( GIMME_V ) {
  85             case G_VOID: return; break;
  86             case G_SCALAR: ST(0) = &PL_sv_undef; return; break;
  87         }
  88
  89         if ( items > 1 ) type_filter = ST(1);
  90
  91         PUTBACK;
  92
  93         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)))
  94             stash = gv_stashsv(HeVAL(he),0);
  95
  96         if ( stash ) {
  97
  98             (void)hv_iterinit(stash);
  99
 100             if ( type_filter && SvPOK(type_filter) ) {
 101                 const char *const type = SvPV_nolen(type_filter);
 102
 103                 while ((he = hv_iternext(stash))) {
 104                     SV *const gv = HeVAL(he);
 105                     SV *sv;
 106                     char *key;
 107                     STRLEN keylen;
 108                     char *package;
 109                     SV *fq;
 110
 111                     switch( SvTYPE(gv) ) {
 112                         case SVt_PVGV:
 113                             switch (*type) {
 114                                 case 'C': sv = (SV *)GvCVu(gv); break; /* CODE */
 115                                 case 'A': sv = (SV *)GvAV(gv); break; /* ARRAY */
 116                                 case 'I': sv = (SV *)GvIO(gv); break; /* IO */
 117                                 case 'H': sv = (SV *)GvHV(gv); break; /* HASH */
 118                                 case 'S': sv = (SV *)GvSV(gv); break; /* SCALAR */
 119                                 default:
 120                                           croak("Unknown type %s\n", type);
 121                             }
 122                             break;
 123                         case SVt_RV:
 124                             /* BAH! constants are horrible */
 125
 126                             /* we don't really care about the length,
 127                                but that's the API */
 128                             key = HePV(he, keylen);
 129                             package = HvNAME(stash);
 130                             fq = newSVpvf("%s::%s", package, key);
 131                             sv = sv_2mortal((SV*)get_cv(SvPV_nolen(fq), 0));
 132                             break;
 133                         default:
 134                             continue;
 135                     }
 136
 137                     if ( sv ) {
 138                         SV *key = hv_iterkeysv(he);
 139                         SPAGAIN;
 140                         EXTEND(SP, 2);
 141                         PUSHs(key);
 142                         PUSHs(sv_2mortal(newRV_inc(sv)));
 143                         PUTBACK;
 144                     }
 145                 }
 146             } else {
 147                 EXTEND(SP, HvKEYS(stash) * 2);
 148
 149                 while ((he = hv_iternext(stash))) {
 150                     SV *key = hv_iterkeysv(he);
 151                     SV *sv = HeVAL(he);
 152                     SPAGAIN;
 153                     PUSHs(key);
 154                     PUSHs(sv);
 155                     PUTBACK;
 156                 }
 157             }
 158
 159         }
 160
 161 SV *
 162 name(self)
 163     SV *self
 164     PREINIT:
 165         register HE *he;
 166     PPCODE:
 167         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)))
 168             XPUSHs(HeVAL(he));
 169         else
 170             ST(0) = &PL_sv_undef;
 171
 172 MODULE = Class::MOP   PACKAGE = Class::MOP::Attribute
 173
 174 SV *
 175 name(self)
 176     SV *self
 177     PREINIT:
 178         register HE *he;
 179     PPCODE:
 180         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_name, 0, hash_name)))
 181             XPUSHs(HeVAL(he));
 182         else
 183             ST(0) = &PL_sv_undef;
 184
 185 MODULE = Class::MOP   PACKAGE = Class::MOP::Method
 186
 187 SV *
 188 body(self)
 189     SV *self
 190     PREINIT:
 191         register HE *he;
 192     PPCODE:
 193         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_body, 0, hash_body)))
 194             XPUSHs(HeVAL(he));
 195         else
 196             ST(0) = &PL_sv_undef;