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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. |
5 | # |
6 | # If it finds that the input files are already patches for VMS, |
7 | # it just copies the input to the output. |
8 | # |
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9 | # Revised 29-Jan-1996 by Charles Bailey bailey@genetics.upenn.edu |
10 | |
11 | $VERSION = '1.1'; |
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12 | |
13 | ($cinfile,$hinfile,$coutfile,$houtfile) = @ARGV; |
14 | |
15 | open C,$cinfile or die "Can't read $cinfile: $!\n"; |
16 | open COUT, ">$coutfile" or die "Can't create $coutfile: $!\n"; |
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17 | print COUT <<EOH; |
18 | /* Postprocessed by vms_yfix.pl $VERSION to add VMS declarations of globals */ |
19 | EOH |
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20 | while (<C>) { |
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21 | # "y.tab.c" is illegal as a VMS filename; DECC 5.2/VAX preprocessor |
22 | # doesn't like this. |
23 | if ( s/^#line\s+(\d+)\s+"y.tab.c"/#line $1 "y_tab.c"/ ) { 1; } |
24 | else { |
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 $1 yy/; |
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28 | } |
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29 | print COUT; |
30 | } |
31 | close C; |
32 | close COUT; |
33 | |
34 | open H,$hinfile or die "Can't read $hinfile: $!\n"; |
35 | open HOUT, ">$houtfile" or die "Can't create $houtfile: $!\n"; |
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36 | print HOUT <<EOH; |
37 | /* Postprocessed by vms_yfix.pl $VERSION to add VMS declarations of globals */ |
38 | EOH |
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39 | $hfixed = 0; # keep -w happy |
40 | while (<H>) { |
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 |
44 | print HOUT; |
45 | } |
46 | close H; |
47 | |
48 | print HOUT <<'EODECL' unless $hfixed; |
49 | #ifndef vax11c |
50 | extern YYSTYPE yylval; |
51 | #else |
52 | globalref YYSTYPE yylval; |
53 | #endif |
54 | EODECL |
55 | |
56 | close HOUT; |