Correct default for usedevel on VMS.

[perl5.git] / regen_perly.pl

diff --git a/regen_perly.pl b/regen_perly.pl
index 510cb3b..bf484bb 100644 (file)
--- a/regen_perly.pl
+++ b/regen_perly.pl
@@ -73,16 +73,21 @@ unless ($version) { die <<EOF; }
 Could not find a version of bison in your path. Please install bison.
 EOF
 
-unless ($version =~ /\b(1\.875[a-z]?|2\.[0134])\b/) { die <<EOF; }
+# Don't change this to add new bison versions without testing that the generated
+# files actually work :-) Win32 in particular may not like them. :-(
+unless ($version =~ /\b(1\.875[a-z]?|2\.[0134567])\b/) { die <<EOF; }
 
 You have the wrong version of bison in your path; currently 1.875
-2.0, 2.1, 2.3 or 2.4 is required.  Try installing
-    http://ftp.gnu.org/gnu/bison/bison-2.4.1.tar.gz
+2.0, 2.1, 2.3, 2.4, 2.5, 2.6 or 2.7 is required.  Try installing
+    http://ftp.gnu.org/gnu/bison/bison-2.5.1.tar.gz
 or similar.  Your bison identifies itself as:
 
 $version
 EOF
 
+# bison's version number, not the entire string, is most useful later on.
+$version = $1;
+
 # creates $tmpc_file and $tmph_file
 my_system("$bison -d -o $tmpc_file $y_file");
 
@@ -95,6 +100,7 @@ close $ctmp_fh;
 
 my ($actlines, $tablines) = extract($clines);
 
+our %tokens;
 $tablines .= make_type_tab($y_file, $tablines);
 
 my ($act_fh, $tab_fh, $h_fh) = map {
@@ -114,13 +120,33 @@ unlink $tmpc_file;
 open my $tmph_fh, '<', $tmph_file or die "Can't open $tmph_file: $!\n";
 
 my $endcore_done = 0;
-# Token macros need to be generated manually on bison 2.4
-my $gather_tokens = ($version =~ /\b2\.4\b/ ? undef : 0);
+# Token macros need to be generated manually from bison 2.4 on
+my $gather_tokens = $version >= 2.4 ? undef : 0;
 my $tokens;
 while (<$tmph_fh>) {
+    # bison 2.6 adds header guards, which break things because of where we
+    # insert #ifdef PERL_CORE, so strip them because they aren't important
+    next if /YY_PERLYTMP_H/;
+
     print $h_fh "#ifdef PERL_CORE\n" if $. == 1;
     if (!$endcore_done and /YYSTYPE_IS_DECLARED/) {
-       print $h_fh "#endif /* PERL_CORE */\n";
+       print $h_fh <<h;
+#ifdef PERL_IN_TOKE_C
+static bool
+S_is_opval_token(int type) {
+    switch (type) {
+h
+       print $h_fh <<i for sort grep $tokens{$_} eq 'opval', keys %tokens;
+    case $_:
+i
+       print $h_fh <<j;
+       return 1;
+    }
+    return 0;
+}
+#endif /* PERL_IN_TOKE_C */
+#endif /* PERL_CORE */
+j
        $endcore_done = 1;
     }
     next if /^#line \d+ ".*"/;
@@ -240,12 +266,13 @@ sub extract {
 
 sub make_type_tab {
     my ($y_file, $tablines) = @_;
+    my %just_tokens;
     my %tokens;
     my %types;
     my $default_token;
     open my $fh, '<', $y_file or die "Can't open $y_file: $!\n";
     while (<$fh>) {
-       if (/(\$\d+)\s*=/) {
+       if (/(\$\d+)\s*=[^=]/) {
            warn "$y_file:$.: dangerous assignment to $1: $_";
        }
 
@@ -259,16 +286,22 @@ sub make_type_tab {
        }
 
        next unless /^%(token|type)/;
-       s/^%(token|type)\s+<(\w+)>\s+//
+       s/^%((token)|type)\s+<(\w+)>\s+//
            or die "$y_file: unparseable token/type line: $_";
-       $tokens{$_} = $2 for (split ' ', $_);
-       $types{$2} = 1;
+       for (split ' ', $_) {
+           $tokens{$_} = $3;
+           if ($2) {
+               $just_tokens{$_} = $3;
+           }
+       }
+       $types{$3} = 1;
     }
+    *tokens = \%just_tokens; # perly.h needs this
     die "$y_file: no __DEFAULT__ token defined\n" unless $default_token;
     $types{$default_token} = 1;
 
     $tablines =~ /^\Qstatic const char *const yytname[] =\E\n
-           {\n
+           \{\n
            (.*?)
            ^};
            /xsm
@@ -278,7 +311,7 @@ sub make_type_tab {
                { "toketype_" .
                    (defined $tokens{$1} ? $tokens{$1} : $default_token)
                }ge;
-    $fields =~ s/, \s* 0 \s* $//x
+    $fields =~ s/, \s* (?:0|YY_NULL) \s* $//x
        or die "make_type_tab: couldn't delete trailing ',0'\n";
 
     return