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 /*
  10 get_code_info:
  11   Pass in a coderef, returns:
  12   [ $pkg_name, $coderef_name ] ie:
  13   [ 'Foo::Bar', 'new' ]
  14 */
  15
  16 MODULE = Class::MOP   PACKAGE = Class::MOP
  17
  18 PROTOTYPES: ENABLE
  19
  20 void
  21 get_code_info(coderef)
  22   SV* coderef
  23   PREINIT:
  24     char* name;
  25     char* pkg;
  26   PPCODE:
  27     if( SvOK(coderef) && SvROK(coderef) && SvTYPE(SvRV(coderef)) == SVt_PVCV){
  28       coderef = SvRV(coderef);
  29       /* I think this only gets triggered with a mangled coderef, but if
  30          we hit it without the guard, we segfault. The slightly odd return
  31          value strikes me as an improvement (mst)
  32       */
  33 #ifdef isGV_with_GP
  34       if ( isGV_with_GP(CvGV(coderef))) {
  35 #endif
  36         pkg     = HvNAME( GvSTASH(CvGV(coderef)) );
  37         name    = GvNAME( CvGV(coderef) );
  38 #ifdef isGV_with_GP
  39       } else {
  40         pkg     = "__UNKNOWN__";
  41         name    = "__ANON__";
  42       }
  43 #endif
  44
  45       EXTEND(SP, 2);
  46       PUSHs(newSVpvn(pkg, strlen(pkg)));
  47       PUSHs(newSVpvn(name, strlen(name)));
  48     }
  49
  50
  51 MODULE = Class::MOP   PACKAGE = Class::MOP::Package
  52
  53 void
  54 get_all_package_symbols(package, ...)
  55     SV *package
  56     PROTOTYPE: $;$
  57     PREINIT:
  58         HV *stash;
  59         SV *type_filter = NULL;
  60     PPCODE:
  61
  62         switch ( GIMME_V ) {
  63             case G_VOID: return; break;
  64             case G_SCALAR: ST(0) = &PL_sv_undef; return; break;
  65         }
  66
  67         if ( items > 1 ) type_filter = ST(1);
  68
  69         PUTBACK;
  70
  71         ENTER;
  72         SAVETMPS;
  73         PUSHMARK(SP);
  74         XPUSHs(package);
  75         PUTBACK;
  76         call_method("name", 0);
  77         SPAGAIN;
  78         stash = gv_stashsv(POPs, 0);
  79         FREETMPS;
  80         LEAVE;
  81
  82         PUTBACK;
  83
  84         if ( stash ) {
  85             register HE *entry;
  86
  87             (void)hv_iterinit(stash);
  88
  89             if ( type_filter && SvPOK(type_filter) ) {
  90                 const char *const type = SvPV_nolen(type_filter);
  91
  92
  93                 while ((entry = hv_iternext(stash))) {
  94                     SV *const gv = hv_iterval(stash, entry);
  95                     SV *const key = hv_iterkeysv(entry);
  96                     SV *sv;
  97                     char *package = HvNAME(stash);
  98                     STRLEN pkglen = strlen(package);
  99                     char *fq;
 100                     STRLEN fqlen;
 101
 102                     SPAGAIN;
 103
 104                     switch( SvTYPE(gv) ) {
 105                         case SVt_PVGV:
 106                             switch (*type) {
 107                                 case 'C': sv = (SV *)GvCVu(gv); break; /* CODE */
 108                                 case 'A': sv = (SV *)GvAV(gv); break; /* ARRAY */
 109                                 case 'I': sv = (SV *)GvIO(gv); break; /* IO */
 110                                 case 'H': sv = (SV *)GvHV(gv); break; /* HASH */
 111                                 case 'S': sv = (SV *)GvSV(gv); break; /* SCALAR */
 112                                 default:
 113                                           croak("Unknown type %s\n", type);
 114                             }
 115                             break;
 116                         case SVt_RV:
 117                             /* BAH! constants are horrible */
 118                             fqlen = pkglen + SvCUR(key) + 3;
 119                             fq = (char *)alloca(fqlen);
 120                             snprintf(fq, fqlen, "%s::%s", package, SvPV_nolen(key));
 121                             sv = get_cv(fq, 0);
 122                             break;
 123                         default:
 124                             continue;
 125                     }
 126
 127                     if ( sv ) {
 128                         SPAGAIN;
 129                         EXTEND(SP, 2);
 130                         PUSHs(key);
 131                         PUSHs(newRV_noinc(sv));
 132                         PUTBACK;
 133                     }
 134                 }
 135             } else {
 136                 EXTEND(SP, HvKEYS(stash) * 2);
 137
 138                 while ((entry = hv_iternext(stash))) {
 139                     SV *sv;
 140                     SPAGAIN;
 141                     sv = hv_iterkeysv(entry);
 142                     SPAGAIN;
 143                     PUSHs(sv);
 144                     PUTBACK;
 145                     sv = hv_iterval(stash, entry);
 146                     SPAGAIN;
 147                     PUSHs(sv);
 148                     PUTBACK;
 149                 }
 150             }
 151
 152         }
 153