1 # This script takes the output produced from perly.y by byacc and
2 # the perly.fixer shell script (i.e. the perly.c and perly.h built
3 # for Unix systems) and patches them to produce copies containing
4 # appropriate declarations for VMS handling of global symbols.
6 # If it finds that the input files are already patches for VMS,
7 # it just copies the input to the output.
9 # Revised 29-Jan-1996 by Charles Bailey bailey@genetics.upenn.edu
13 ($cinfile,$hinfile,$coutfile,$houtfile) = @ARGV;
15 open C,$cinfile or die "Can't read $cinfile: $!\n";
16 open COUT, ">$coutfile" or die "Can't create $coutfile: $!\n";
18 /* Postprocessed by vms_yfix.pl $VERSION to add VMS declarations of globals */
21 # "y.tab.c" is illegal as a VMS filename; DECC 5.2/VAX preprocessor
23 if ( s/^#line\s+(\d+)\s+"y.tab.c"/#line $1 "y_tab.c"/ ) { 1; }
25 # add the dEXT tag to definitions of global vars, so we'll insert
26 # a globaldef when perly.c is compiled
27 s/^(short|int|YYSTYPE|char \*)\s*yy/dEXT $1 yy/;
34 open H,$hinfile or die "Can't read $hinfile: $!\n";
35 open HOUT, ">$houtfile" or die "Can't create $houtfile: $!\n";
37 /* Postprocessed by vms_yfix.pl $VERSION to add VMS declarations of globals */
39 $hfixed = 0; # keep -w happy
41 $hfixed = /globalref/ unless $hfixed; # we've already got a fixed copy
42 next if /^extern YYSTYPE yylval/; # we've got a Unix version, and this
43 # is what we want to replace
48 print HOUT <<'EODECL' unless $hfixed;
50 extern YYSTYPE yylval;
52 globalref YYSTYPE yylval;