MOP.xs

   1
   2 #include "EXTERN.h"
   3 #include "perl.h"
   4 #include "XSUB.h"
   5
   6 #define NEED_sv_2pv_nolen
   7 #include "ppport.h"
   8
   9 SV *key_name;
  10 U32 hash_name;
  11
  12 SV *key_package;
  13 U32 hash_package;
  14
  15 SV *key_body;
  16 U32 hash_body;
  17
  18 /*
  19 get_code_info:
  20   Pass in a coderef, returns:
  21   [ $pkg_name, $coderef_name ] ie:
  22   [ 'Foo::Bar', 'new' ]
  23 */
  24
  25 MODULE = Class::MOP   PACKAGE = Class::MOP
  26
  27 BOOT:
  28     key_name = newSVpvs("name");
  29     key_body = newSVpvs("body");
  30     key_package = newSVpvs("package");
  31
  32     PERL_HASH(hash_name, "name", 4);
  33     PERL_HASH(hash_body, "body", 4);
  34     PERL_HASH(hash_package, "package", 7);
  35
  36
  37 PROTOTYPES: ENABLE
  38
  39
  40 void
  41 get_code_info(coderef)
  42   SV* coderef
  43   PREINIT:
  44     char* name;
  45     char* pkg;
  46   PPCODE:
  47     if( SvOK(coderef) && SvROK(coderef) && SvTYPE(SvRV(coderef)) == SVt_PVCV){
  48       coderef = SvRV(coderef);
  49       /* I think this only gets triggered with a mangled coderef, but if
  50          we hit it without the guard, we segfault. The slightly odd return
  51          value strikes me as an improvement (mst)
  52       */
  53 #ifdef isGV_with_GP
  54       if ( isGV_with_GP(CvGV(coderef))) {
  55 #endif
  56         pkg     = HvNAME( GvSTASH(CvGV(coderef)) );
  57         name    = GvNAME( CvGV(coderef) );
  58 #ifdef isGV_with_GP
  59       } else {
  60         pkg     = "__UNKNOWN__";
  61         name    = "__ANON__";
  62       }
  63 #endif
  64
  65       EXTEND(SP, 2);
  66       PUSHs(newSVpvn(pkg, strlen(pkg)));
  67       PUSHs(newSVpvn(name, strlen(name)));
  68     }
  69
  70
  71 MODULE = Class::MOP   PACKAGE = Class::MOP::Package
  72
  73 void
  74 get_all_package_symbols(self, ...)
  75     SV *self
  76     PROTOTYPE: $;$
  77     PREINIT:
  78         HV *stash = NULL;
  79         SV *type_filter = NULL;
  80         register HE *he;
  81     PPCODE:
  82
  83         switch ( GIMME_V ) {
  84             case G_VOID: return; break;
  85             case G_SCALAR: ST(0) = &PL_sv_undef; return; break;
  86         }
  87
  88         if ( items > 1 ) type_filter = ST(1);
  89
  90         PUTBACK;
  91
  92         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)))
  93             stash = gv_stashsv(HeVAL(he),0);
  94
  95         if ( stash ) {
  96
  97             (void)hv_iterinit(stash);
  98
  99             if ( type_filter && SvPOK(type_filter) ) {
 100                 const char *const type = SvPV_nolen(type_filter);
 101
 102
 103                 while ((he = hv_iternext(stash))) {
 104                     SV *const gv = HeVAL(he);
 105                     SV *sv;
 106                     char *package = HvNAME(stash);
 107                     STRLEN pkglen = strlen(package);
 108                     char *key;
 109                     STRLEN keylen;
 110                     char *fq;
 111                     STRLEN fqlen;
 112
 113                     switch( SvTYPE(gv) ) {
 114                         case SVt_PVGV:
 115                             switch (*type) {
 116                                 case 'C': sv = (SV *)GvCVu(gv); break; /* CODE */
 117                                 case 'A': sv = (SV *)GvAV(gv); break; /* ARRAY */
 118                                 case 'I': sv = (SV *)GvIO(gv); break; /* IO */
 119                                 case 'H': sv = (SV *)GvHV(gv); break; /* HASH */
 120                                 case 'S': sv = (SV *)GvSV(gv); break; /* SCALAR */
 121                                 default:
 122                                           croak("Unknown type %s\n", type);
 123                             }
 124                             break;
 125                         case SVt_RV:
 126                             /* BAH! constants are horrible */
 127                             key = HePV(he, keylen);
 128                             fqlen = pkglen + keylen + 3;
 129                             fq = (char *)alloca(fqlen);
 130                             snprintf(fq, fqlen, "%s::%s", package, key);
 131                             sv = (SV*)get_cv(fq, 0);
 132                             sv_2mortal(sv);
 133                             break;
 134                         default:
 135                             continue;
 136                     }
 137
 138                     if ( sv ) {
 139                         SV *key = hv_iterkeysv(he);
 140                         SPAGAIN;
 141                         EXTEND(SP, 2);
 142                         PUSHs(key);
 143                         PUSHs(sv_2mortal(newRV_inc(sv)));
 144                         PUTBACK;
 145                     }
 146                 }
 147             } else {
 148                 EXTEND(SP, HvKEYS(stash) * 2);
 149
 150                 while ((he = hv_iternext(stash))) {
 151                     SV *key = hv_iterkeysv(he);
 152                     SV *sv = hv_iterval(stash, he);
 153                     SPAGAIN;
 154                     PUSHs(key);
 155                     PUSHs(sv);
 156                     PUTBACK;
 157                 }
 158             }
 159
 160         }
 161
 162 SV *
 163 name(self)
 164     SV *self
 165     PREINIT:
 166         register HE *he;
 167     PPCODE:
 168         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)))
 169             XPUSHs(HeVAL(he));
 170         else
 171             ST(0) = &PL_sv_undef;
 172
 173 MODULE = Class::MOP   PACKAGE = Class::Attribute
 174
 175 SV *
 176 name(self)
 177     SV *self
 178     PREINIT:
 179         register HE *he;
 180     PPCODE:
 181         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_name, 0, hash_name)))
 182             XPUSHs(HeVAL(he));
 183         else
 184             ST(0) = &PL_sv_undef;
 185
 186 MODULE = Class::MOP   PACKAGE = Class::Method
 187
 188 SV *
 189 name(self)
 190     SV *self
 191     PREINIT:
 192         register HE *he;
 193     PPCODE:
 194         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_name, 0, hash_name)))
 195             XPUSHs(HeVAL(he));
 196         else
 197             ST(0) = &PL_sv_undef;
 198
 199 SV *
 200 body(self)
 201     SV *self
 202     PREINIT:
 203         register HE *he;
 204     PPCODE:
 205         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_body, 0, hash_body)))
 206             XPUSHs(HeVAL(he));
 207         else
 208             ST(0) = &PL_sv_undef;