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
 104                 while ((he = hv_iternext(stash))) {
 105                     SV *const gv = HeVAL(he);
 106                     SV *sv;
 107                     char *package = HvNAME(stash);
 108                     STRLEN pkglen = strlen(package);
 109                     char *key;
 110                     STRLEN keylen;
 111                     char *fq;
 112                     STRLEN fqlen;
 113
 114                     switch( SvTYPE(gv) ) {
 115                         case SVt_PVGV:
 116                             switch (*type) {
 117                                 case 'C': sv = (SV *)GvCVu(gv); break; /* CODE */
 118                                 case 'A': sv = (SV *)GvAV(gv); break; /* ARRAY */
 119                                 case 'I': sv = (SV *)GvIO(gv); break; /* IO */
 120                                 case 'H': sv = (SV *)GvHV(gv); break; /* HASH */
 121                                 case 'S': sv = (SV *)GvSV(gv); break; /* SCALAR */
 122                                 default:
 123                                           croak("Unknown type %s\n", type);
 124                             }
 125                             break;
 126                         case SVt_RV:
 127                             /* BAH! constants are horrible */
 128                             key = HePV(he, keylen);
 129                             fqlen = pkglen + keylen + 3;
 130                             fq = (char *)alloca(fqlen);
 131                             snprintf(fq, fqlen, "%s::%s", package, key);
 132                             sv = (SV*)get_cv(fq, 0);
 133                             sv_2mortal(sv);
 134                             break;
 135                         default:
 136                             continue;
 137                     }
 138
 139                     if ( sv ) {
 140                         SV *key = hv_iterkeysv(he);
 141                         SPAGAIN;
 142                         EXTEND(SP, 2);
 143                         PUSHs(key);
 144                         PUSHs(sv_2mortal(newRV_inc(sv)));
 145                         PUTBACK;
 146                     }
 147                 }
 148             } else {
 149                 EXTEND(SP, HvKEYS(stash) * 2);
 150
 151                 while ((he = hv_iternext(stash))) {
 152                     SV *key = hv_iterkeysv(he);
 153                     SV *sv = HeVAL(he);
 154                     SPAGAIN;
 155                     PUSHs(key);
 156                     PUSHs(sv);
 157                     PUTBACK;
 158                 }
 159             }
 160
 161         }
 162
 163 SV *
 164 name(self)
 165     SV *self
 166     PREINIT:
 167         register HE *he;
 168     PPCODE:
 169         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_package, 0, hash_package)))
 170             XPUSHs(HeVAL(he));
 171         else
 172             ST(0) = &PL_sv_undef;
 173
 174 MODULE = Class::MOP   PACKAGE = Class::Attribute
 175
 176 SV *
 177 name(self)
 178     SV *self
 179     PREINIT:
 180         register HE *he;
 181     PPCODE:
 182         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_name, 0, hash_name)))
 183             XPUSHs(HeVAL(he));
 184         else
 185             ST(0) = &PL_sv_undef;
 186
 187 MODULE = Class::MOP   PACKAGE = Class::Method
 188
 189 SV *
 190 name(self)
 191     SV *self
 192     PREINIT:
 193         register HE *he;
 194     PPCODE:
 195         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_name, 0, hash_name)))
 196             XPUSHs(HeVAL(he));
 197         else
 198             ST(0) = &PL_sv_undef;
 199
 200 SV *
 201 body(self)
 202     SV *self
 203     PREINIT:
 204         register HE *he;
 205     PPCODE:
 206         if (SvROK(self) && (he = hv_fetch_ent((HV *)SvRV(self), key_body, 0, hash_body)))
 207             XPUSHs(HeVAL(he));
 208         else
 209             ST(0) = &PL_sv_undef;