ext/B/defsubs_h.PL

   1 # Do not remove the following line; MakeMaker relies on it to identify
   2 # this file as a template for defsubs.h
   3 # Extracting defsubs.h (with variable substitutions)
   4 #!perl -w
   5 use File::Spec;
   6 my (undef, $headerpath) = @ARGV;
   7 my ($out) = __FILE__ =~ /(^.*)\.PL/i;
   8 $out =~ s/_h$/.h/;
   9 unlink $out if -l $out;
  10 open(OUT,">$out") || die "Cannot open $file:$!";
  11 print "Extracting $out...\n";
  12 print OUT <<"END";
  13 /*
  14  !!! Don't modify this file - it's autogenerated from $0 !!!
  15  */
  16 END
  17
  18 foreach my $const (qw(
  19                       CVf_ANON
  20                       CVf_CLONE
  21                       CVf_CLONED
  22                       CVf_CONST
  23                       CVf_LVALUE
  24                       CVf_METHOD
  25                       CVf_NODEBUG
  26                       CVf_UNIQUE
  27                       CVf_WEAKOUTSIDE
  28                       GVf_IMPORTED_AV
  29                       GVf_IMPORTED_CV
  30                       GVf_IMPORTED_HV
  31                       GVf_IMPORTED_SV
  32                       HEf_SVKEY
  33                       SVTYPEMASK
  34                       SVf_FAKE
  35                       SVf_IOK
  36                       SVf_IVisUV
  37                       SVf_NOK
  38                       SVf_POK
  39                       SVf_READONLY
  40                       SVf_ROK
  41                       SVp_IOK
  42                       SVp_NOK
  43                       SVp_POK
  44                       SVpad_OUR
  45                       SVs_RMG
  46                       SVs_SMG
  47                       SVt_PVGV
  48                       SVt_PVHV
  49                       PAD_FAKELEX_ANON
  50                       PAD_FAKELEX_MULTI
  51                       ))
  52  {
  53   doconst($const);
  54  }
  55
  56 if ($] < 5.009) {
  57     # This is only present in 5.10, but it's useful to B::Deparse to be able
  58     # to import a dummy value from B
  59     doconst(OPpPAD_STATE);
  60 }
  61
  62 if ($] >= 5.009) {
  63     # Constant not present in 5.8.x
  64     doconst(CVf_ISXSUB);
  65 } else {
  66     # Constant not present after 5.8.x
  67     doconst(AVf_REAL);
  68 }
  69
  70 if ($] < 5.011) {
  71     # Constant not present after 5.10.x
  72     doconst(CVf_LOCKED);
  73 }
  74
  75 foreach my $tuple (['op.h'],['cop.h'],['regexp.h','RXf_'])
  76  {
  77   my $file = $tuple->[0];
  78   my $pfx = $tuple->[1] || '';
  79   my $path = File::Spec->catfile($headerpath, $file);
  80   open(OPH,"$path") || die "Cannot open $path:$!";
  81   while (<OPH>)
  82    {
  83     doconst($1) if (/#define\s+($pfx\w+)\s+([\(\)\|\dx]+)\s*(?:$|\/\*)/);
  84    }
  85   close(OPH);
  86  }
  87 close(OUT);
  88
  89 sub doconst
  90 {
  91  my $sym = shift;
  92  my $l = length($sym);
  93  print OUT <<"END";
  94  newCONSTSUB(stash,"$sym",newSViv($sym));
  95  av_push(export_ok,newSVpvn("$sym",$l));
  96 END
  97 }