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_package_name;
  17 U32 hash_package_name;
  18
  19 SV *key_body;
  20 U32 hash_body;
  21
  22 /*
  23 get_code_info:
  24   Pass in a coderef, returns:
  25   [ $pkg_name, $coderef_name ] ie:
  26   [ 'Foo::Bar', 'new' ]
  27 */
  28
  29 MODULE = Class::MOP   PACKAGE = Class::MOP
  30
  31 BOOT:
  32     key_name = newSVpvs("name");
  33     key_body = newSVpvs("body");
  34     key_package = newSVpvs("package");
  35     key_package_name = newSVpvs("package_name");
  36
  37     PERL_HASH(hash_name, "name", 4);
  38     PERL_HASH(hash_body, "body", 4);
  39     PERL_HASH(hash_package, "package", 7);
  40     PERL_HASH(hash_package_name, "package_name", 12);
  41
  42
  43 PROTOTYPES: ENABLE
  44
  45
  46 void
  47 get_code_info(coderef)
  48   SV* coderef
  49   PREINIT:
  50     char* name;
  51     char* pkg;
  52   PPCODE:
  53     if( SvOK(coderef) && SvROK(coderef) && SvTYPE(SvRV(coderef)) == SVt_PVCV){
  54       coderef = SvRV(coderef);
  55       /* I think this only gets triggered with a mangled coderef, but if
  56          we hit it without the guard, we segfault. The slightly odd return
  57          value strikes me as an improvement (mst)
  58       */
  59 #ifdef isGV_with_GP
  60       if ( isGV_with_GP(CvGV(coderef))) {
  61 #endif
  62         pkg     = HvNAME( GvSTASH(CvGV(coderef)) );
  63         name    = GvNAME( CvGV(coderef) );
  64 #ifdef isGV_with_GP
  65       } else {
  66         pkg     = "__UNKNOWN__";
  67         name    = "__ANON__";
  68       }
  69 #endif
  70
  71       EXTEND(SP, 2);
  72       PUSHs(newSVpvn(pkg, strlen(pkg)));
  73       PUSHs(newSVpvn(name, strlen(name)));
  74     }
  75
  76
  77 MODULE = Class::MOP   PACKAGE = Class::MOP::Package
  78
  79 void
  80 get_all_package_symbols(self, ...)
  81     SV *self
  82     PROTOTYPE: $;$
  83     PREINIT:
  84         HV *stash = NULL;
  85         SV *type_filter = NULL;
  86         register HE *he;
  87     PPCODE:
  88
  89         switch ( GIMME_V ) {
  90             case G_VOID: return; break;
  91             case G_SCALAR: ST(0) = &PL_sv_undef; return; break;
  92         }
  93
  94         if ( items > 1 ) type_filter = ST(1);
  95
  96         PUTBACK;
  97
  98         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)))
  99             stash = gv_stashsv(HeVAL(he),0);
 100
 101         if ( stash ) {
 102
 103             (void)hv_iterinit(stash);
 104
 105             if ( type_filter && SvPOK(type_filter) ) {
 106                 const char *const type = SvPV_nolen(type_filter);
 107
 108                 while ((he = hv_iternext(stash))) {
 109                     SV *const gv = HeVAL(he);
 110                     SV *sv;
 111                     char *key;
 112                     STRLEN keylen;
 113                     char *package;
 114                     SV *fq;
 115
 116                     switch( SvTYPE(gv) ) {
 117                         case SVt_PVGV:
 118                             switch (*type) {
 119                                 case 'C': sv = (SV *)GvCVu(gv); break; /* CODE */
 120                                 case 'A': sv = (SV *)GvAV(gv); break; /* ARRAY */
 121                                 case 'I': sv = (SV *)GvIO(gv); break; /* IO */
 122                                 case 'H': sv = (SV *)GvHV(gv); break; /* HASH */
 123                                 case 'S': sv = (SV *)GvSV(gv); break; /* SCALAR */
 124                                 default:
 125                                           croak("Unknown type %s\n", type);
 126                             }
 127                             break;
 128                         case SVt_RV:
 129                             /* BAH! constants are horrible */
 130
 131                             /* we don't really care about the length,
 132                                but that's the API */
 133                             key = HePV(he, keylen);
 134                             package = HvNAME(stash);
 135                             fq = newSVpvf("%s::%s", package, key);
 136                             sv = sv_2mortal((SV*)get_cv(SvPV_nolen(fq), 0));
 137                             break;
 138                         default:
 139                             continue;
 140                     }
 141
 142                     if ( sv ) {
 143                         SV *key = hv_iterkeysv(he);
 144                         SPAGAIN;
 145                         EXTEND(SP, 2);
 146                         PUSHs(key);
 147                         PUSHs(sv_2mortal(newRV_inc(sv)));
 148                         PUTBACK;
 149                     }
 150                 }
 151             } else {
 152                 EXTEND(SP, HvKEYS(stash) * 2);
 153
 154                 while ((he = hv_iternext(stash))) {
 155                     SV *key = hv_iterkeysv(he);
 156                     SV *sv = HeVAL(he);
 157                     SPAGAIN;
 158                     PUSHs(key);
 159                     PUSHs(sv);
 160                     PUTBACK;
 161                 }
 162             }
 163
 164         }
 165
 166 SV *
 167 name(self)
 168     SV *self
 169     PREINIT:
 170         register HE *he;
 171     PPCODE:
 172         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)))
 173             XPUSHs(HeVAL(he));
 174         else
 175             ST(0) = &PL_sv_undef;
 176
 177 MODULE = Class::MOP   PACKAGE = Class::MOP::Attribute
 178
 179 SV *
 180 name(self)
 181     SV *self
 182     PREINIT:
 183         register HE *he;
 184     PPCODE:
 185         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_name, 0, hash_name)))
 186             XPUSHs(HeVAL(he));
 187         else
 188             ST(0) = &PL_sv_undef;
 189
 190 MODULE = Class::MOP   PACKAGE = Class::MOP::Method
 191
 192 SV *
 193 name(self)
 194     SV *self
 195     PREINIT:
 196         register HE *he;
 197     PPCODE:
 198         if (! SvROK(self)) {
 199             die("Cannot call name as a class method");
 200         }
 201
 202         if (he = hv_fetch_ent((HV *)SvRV(self), key_name, 0, hash_name))
 203             XPUSHs(HeVAL(he));
 204         else
 205             ST(0) = &PL_sv_undef;
 206
 207 SV *
 208 package_name(self)
 209     SV *self
 210     PREINIT:
 211         register HE *he;
 212     PPCODE:
 213         if (! SvROK(self)) {
 214             die("Cannot call package_name as a class method");
 215         }
 216
 217         if (he = hv_fetch_ent((HV *)SvRV(self), key_package_name, 0, hash_package_name))
 218             XPUSHs(HeVAL(he));
 219         else
 220             ST(0) = &PL_sv_undef;
 221
 222 SV *
 223 body(self)
 224     SV *self
 225     PREINIT:
 226         register HE *he;
 227     PPCODE:
 228         if (! SvROK(self)) {
 229             die("Cannot call body as a class method");
 230         }
 231
 232         if (he = hv_fetch_ent((HV *)SvRV(self), key_body, 0, hash_body))
 233             XPUSHs(HeVAL(he));
 234         else
 235             ST(0) = &PL_sv_undef;