5 xsubpp - compiler to convert Perl XS code into C code
9 B<xsubpp> [B<-v>] [B<-C++>] [B<-except>] [B<-s pattern>] [B<-prototypes>] [B<-noversioncheck>] [B<-typemap typemap>]... file.xs
13 I<xsubpp> will compile XS code into C code by embedding the constructs
14 necessary to let C functions manipulate Perl values and creates the glue
15 necessary to let Perl access those functions. The compiler uses typemaps to
16 determine how to map C function parameters and variables to Perl values.
18 The compiler will search for typemap files called I<typemap>. It will use
19 the following search path to find default typemaps, with the rightmost
20 typemap taking precedence.
22 ../../../typemap:../../typemap:../typemap:typemap
30 Adds ``extern "C"'' to the C code.
35 Adds exception handling stubs to the C code.
37 =item B<-typemap typemap>
39 Indicates that a user-supplied typemap should take precedence over the
40 default typemaps. This option may be used multiple times, with the last
41 typemap having the highest precedence.
45 Prints the I<xsubpp> version number to standard output, then exits.
49 By default I<xsubpp> will not automatically generate prototype code for
50 all xsubs. This flag will enable prototypes.
52 =item B<-noversioncheck>
54 Disables the run time test that determines if the object file (derived
55 from the C<.xs> file) and the C<.pm> files have the same version
62 No environment variables are used.
68 =head1 MODIFICATION HISTORY
70 See the file F<changes.pod>.
74 perl(1), perlxs(1), perlxstut(1), perlapi(1)
79 $XSUBPP_version = "1.929";
84 $FH_string = 'File0000' ;
87 $usage = "Usage: xsubpp [-v] [-C++] [-except] [-prototypes] [-noversioncheck] [-s pattern] [-typemap typemap]... file.xs\n";
89 $proto_re = "[" . quotemeta('\$%&*@;') . "]" ;
92 $WantPrototypes = -1 ;
95 SWITCH: while (@ARGV and $ARGV[0] =~ /^-./) {
98 $spat = shift, next SWITCH if $flag eq 's';
99 $cplusplus = 1, next SWITCH if $flag eq 'C++';
100 $WantPrototypes = 0, next SWITCH if $flag eq 'noprototypes';
101 $WantPrototypes = 1, next SWITCH if $flag eq 'prototypes';
102 $WantVersionChk = 0, next SWITCH if $flag eq 'noversioncheck';
103 $WantVersionChk = 1, next SWITCH if $flag eq 'versioncheck';
104 $except = " TRY", next SWITCH if $flag eq 'except';
105 push(@tm,shift), next SWITCH if $flag eq 'typemap';
106 (print "xsubpp version $XSUBPP_version\n"), exit
110 if ($WantPrototypes == -1)
111 { $WantPrototypes = 0}
116 @ARGV == 1 or die $usage;
117 ($dir, $filename) = $ARGV[0] =~ m#(.*)/(.*)#
118 or ($dir, $filename) = $ARGV[0] =~ m#(.*[>\]])(.*)#
119 or ($dir, $filename) = ('.', $ARGV[0]);
121 # Check for VMS; Config.pm may not be installed yet, but this routine
122 # is built into VMS perl
123 if (defined(&VMS::Filespec::vmsify)) { $Is_VMS = 1; $pwd = $ENV{DEFAULT}; }
124 else { $Is_VMS = 0; chomp($pwd = `pwd`); }
126 ++ $IncludedFiles{$ARGV[0]} ;
130 $_[0] =~ s/^\s+|\s+$//go ;
137 # rationalise any '*' by joining them into bunches and removing whitespace
141 # change multiple whitespace into a single space
144 # trim leading & trailing whitespace
150 $typemap = shift @ARGV;
151 foreach $typemap (@tm) {
152 die "Can't find $typemap in $pwd\n" unless -r $typemap;
154 unshift @tm, qw(../../../../lib/ExtUtils/typemap ../../../lib/ExtUtils/typemap
155 ../../lib/ExtUtils/typemap ../../../typemap ../../typemap
157 foreach $typemap (@tm) {
158 next unless -e $typemap ;
159 # skip directories, binary files etc.
160 warn("Warning: ignoring non-text typemap file '$typemap'\n"), next
162 open(TYPEMAP, $typemap)
163 or warn ("Warning: could not open typemap file '$typemap': $!\n"), next;
169 if (/^INPUT\s*$/) { $mode = 'Input'; $current = \$junk; next; }
170 if (/^OUTPUT\s*$/) { $mode = 'Output'; $current = \$junk; next; }
171 if (/^TYPEMAP\s*$/) { $mode = 'Typemap'; $current = \$junk; next; }
172 if ($mode eq 'Typemap') {
176 # skip blank lines and comment lines
177 next if /^$/ or /^#/ ;
178 my($type,$kind, $proto) = /^\s*(.*?\S)\s+(\S+)\s*($proto_re*)\s*$/ or
179 warn("Warning: File '$typemap' Line $. '$line' TYPEMAP entry needs 2 or 3 columns\n"), next;
180 $type = TidyType($type) ;
181 $type_kind{$type} = $kind ;
182 # prototype defaults to '$'
183 $proto = '$' unless $proto ;
184 warn("Warning: File '$typemap' Line $. '$line' Invalid prototype '$proto'\n")
185 unless ValidProtoString($proto) ;
186 $proto_letter{$type} = C_string($proto) ;
191 elsif ($mode eq 'Input') {
193 $input_expr{$_} = '';
194 $current = \$input_expr{$_};
198 $output_expr{$_} = '';
199 $current = \$output_expr{$_};
205 foreach $key (keys %input_expr) {
206 $input_expr{$key} =~ s/\n+$//;
209 $END = "!End!\n\n"; # "impossible" keyword (multiple newline)
211 # Match an XS keyword
212 $BLOCK_re= '\s*(' . join('|', qw(
213 REQUIRE BOOT CASE PREINIT INPUT INIT CODE PPCODE OUTPUT
214 CLEANUP ALIAS PROTOTYPES PROTOTYPE VERSIONCHECK INCLUDE
217 # Input: ($_, @line) == unparsed input.
218 # Output: ($_, @line) == (rest of line, following lines).
219 # Return: the matched keyword if found, otherwise 0
221 $_ = shift(@line) while !/\S/ && @line;
222 s/^(\s*)($_[0])\s*:\s*(?:#.*)?/$1/s && $2;
227 $_ = shift(@line) while !/\S/ && @line;
228 for (; defined($_) && !/^$BLOCK_re/o; $_ = shift(@line)) {
233 sub process_keyword($)
238 &{"${kwd}_handler"}()
239 while $kwd = check_keyword($pattern) ;
243 blurt ("Error: `CASE:' after unconditional `CASE:'")
244 if $condnum && $cond eq '';
246 TrimWhitespace($cond);
247 print " ", ($condnum++ ? " else" : ""), ($cond ? " if ($cond)\n" : "\n");
252 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
253 last if /^\s*NOT_IMPLEMENTED_YET/;
254 next unless /\S/; # skip blank lines
259 # remove trailing semicolon if no initialisation
260 s/\s*;$//g unless /=/ ;
262 # check for optional initialisation code
264 $var_init = $1 if s/\s*(=.*)$//s ;
265 $var_init =~ s/"/\\"/g;
268 my ($var_type, $var_addr, $var_name) = /^(.*?[^& ]) *(\&?) *\b(\w+)$/s
269 or blurt("Error: invalid argument declaration '$line'"), next;
271 # Check for duplicate definitions
272 blurt ("Error: duplicate definition of argument '$var_name' ignored"), next
273 if $arg_list{$var_name} ++ ;
275 $thisdone |= $var_name eq "THIS";
276 $retvaldone |= $var_name eq "RETVAL";
277 $var_types{$var_name} = $var_type;
278 print "\t" . &map_type($var_type);
279 $var_num = $args_match{$var_name};
281 $proto_arg[$var_num] = ProtoString($var_type)
284 $var_addr{$var_name} = 1;
285 $func_args =~ s/\b($var_name)\b/&$1/;
287 if ($var_init =~ /^=\s*NO_INIT\s*;?\s*$/) {
288 print "\t$var_name;\n";
289 } elsif ($var_init =~ /\S/) {
290 &output_init($var_type, $var_num, "$var_name $var_init");
292 # generate initialization code
293 &generate_init($var_type, $var_num, $var_name);
301 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
303 my ($outarg, $outcode) = /^\s*(\S+)\s*(.*?)\s*$/s ;
304 blurt ("Error: duplicate OUTPUT argument '$outarg' ignored"), next
305 if $outargs{$outarg} ++ ;
306 if (!$gotRETVAL and $outarg eq 'RETVAL') {
307 # deal with RETVAL last
308 $RETVAL_code = $outcode ;
312 blurt ("Error: OUTPUT $outarg not an argument"), next
313 unless defined($args_match{$outarg});
314 blurt("Error: No input definition for OUTPUT argument '$outarg' - ignored"), next
315 unless defined $var_types{$outarg} ;
317 print "\t$outcode\n";
319 $var_num = $args_match{$outarg};
320 &generate_output($var_types{$outarg}, $var_num, $outarg);
325 sub CLEANUP_handler() { print_section() }
326 sub PREINIT_handler() { print_section() }
327 sub INIT_handler() { print_section() }
336 # Parse alias definitions
338 # alias = value alias = value ...
340 while ($line =~ s/^\s*([\w:]+)\s*=\s*(\w+)\s*//) {
342 $orig_alias = $alias ;
345 # check for optional package definition in the alias
346 $alias = $Packprefix . $alias if $alias !~ /::/ ;
348 # check for duplicate alias name & duplicate value
349 Warn("Warning: Ignoring duplicate alias '$orig_alias'")
350 if defined $XsubAliases{$pname}{$alias} ;
352 Warn("Warning: Aliases '$orig_alias' and '$XsubAliasValues{$pname}{$value}' have identical values")
353 if $XsubAliasValues{$pname}{$value} ;
355 $XsubAliases{$pname}{$alias} = $value ;
356 $XsubAliasValues{$pname}{$value} = $orig_alias ;
359 blurt("Error: Cannot parse ALIAS definitions from '$orig'")
365 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
368 GetAliases($_) if $_ ;
372 sub REQUIRE_handler ()
374 # the rest of the current line should contain a version number
377 TrimWhitespace($Ver) ;
379 death ("Error: REQUIRE expects a version number")
382 # check that the version number is of the form n.n
383 death ("Error: REQUIRE: expected a number, got '$Ver'")
384 unless $Ver =~ /^\d+(\.\d*)?/ ;
386 death ("Error: xsubpp $Ver (or better) required--this is only $XSUBPP_version.")
387 unless $XSUBPP_version >= $Ver ;
390 sub VERSIONCHECK_handler ()
392 # the rest of the current line should contain either ENABLE or
397 # check for ENABLE/DISABLE
398 death ("Error: VERSIONCHECK: ENABLE/DISABLE")
399 unless /^(ENABLE|DISABLE)/i ;
401 $WantVersionChk = 1 if $1 eq 'ENABLE' ;
402 $WantVersionChk = 0 if $1 eq 'DISABLE' ;
406 sub PROTOTYPE_handler ()
408 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
411 if ($_ eq 'DISABLE') {
414 elsif ($_ eq 'ENABLE') {
418 # remove any whitespace
420 death("Error: Invalid prototype '$_'")
421 unless ValidProtoString($_) ;
422 $ProtoThisXSUB = C_string($_) ;
428 sub PROTOTYPES_handler ()
430 # the rest of the current line should contain either ENABLE or
435 # check for ENABLE/DISABLE
436 death ("Error: PROTOTYPES: ENABLE/DISABLE")
437 unless /^(ENABLE|DISABLE)/i ;
439 $WantPrototypes = 1 if $1 eq 'ENABLE' ;
440 $WantPrototypes = 0 if $1 eq 'DISABLE' ;
445 sub INCLUDE_handler ()
447 # the rest of the current line should contain a valid filename
451 # If the filename is enclosed in quotes, remove them.
452 s/^'([^']*)'$/$1/ or s/^"([^"]*)"$/$1/ ;
454 death("INCLUDE: filename missing")
457 death("INCLUDE: output pipe is illegal")
460 # simple minded recursion detector
461 death("INCLUDE loop detected")
462 if $IncludedFiles{$_} ;
464 ++ $IncludedFiles{$_} unless /\|\s*$/ ;
466 # Save the current file context.
468 LastLine => $lastline,
469 LastLineNo => $lastline_no,
472 Filename => $filename,
473 Handle => $FH_string,
479 open ($FH_string, "$_") or death("Cannot open '$_': $!") ;
483 #/* INCLUDE: Including '$_' from '$filename' */
490 # Prime the pump by reading the first line
498 return 0 unless @FileStack ;
500 my $data = pop @FileStack ;
501 my $ThisFile = $filename ;
502 my $isPipe = ($filename =~ /\|\s*$/) ;
504 -- $IncludedFiles{$filename}
509 *FH = $data->{Handle} ;
510 $filename = $data->{Filename} ;
511 $lastline = $data->{LastLine} ;
512 $lastline_no = $data->{LastLineNo} ;
513 @line = @{ $data->{Line} } ;
514 @line_no = @{ $data->{LineNo} } ;
516 if ($isPipe and $? ) {
518 print STDERR "Error reading from pipe '$ThisFile': $! in $filename, line $lastline_no\n" ;
524 #/* INCLUDE: Returning to '$filename' from '$ThisFile' */
531 sub ValidProtoString ($)
535 if ( $string =~ /^$proto_re+$/ ) {
546 $string =~ s[\\][\\\\]g ;
554 $proto_letter{$type} or '$' ;
558 my @cpp = grep(/^\#\s*(?:if|e\w+)/, @line);
560 my ($cpp, $cpplevel);
562 if ($cpp =~ /^\#\s*if/) {
564 } elsif (!$cpplevel) {
565 Warn("Warning: #else/elif/endif without #if in this function");
567 } elsif ($cpp =~ /^\#\s*endif/) {
571 Warn("Warning: #if without #endif in this function") if $cpplevel;
584 open(FH, $filename) or die "cannot open $filename: $!\n";
586 # Identify the version of xsubpp used
589 * This file was generated automatically by xsubpp version $XSUBPP_version from the
590 * contents of $filename. Don't edit this file, edit $filename instead.
592 * ANY CHANGES MADE HERE WILL BE LOST!
600 last if ($Module, $Package, $Prefix) =
601 /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/;
604 &Exit unless defined $_;
610 # Read next xsub into @line from ($lastline, <FH>).
615 if (! defined $lastline) {
616 return 1 if PopFile() ;
621 /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/) {
623 $Package = defined($2) ? $2 : ''; # keep -w happy
624 $Prefix = defined($3) ? $3 : ''; # keep -w happy
625 ($Module_cname = $Module) =~ s/\W/_/g;
626 ($Packid = $Package) =~ tr/:/_/;
627 $Packprefix = $Package;
628 $Packprefix .= "::" if $Packprefix ne "";
633 if ($lastline !~ /^\s*#/ ||
634 $lastline =~ /^#[ \t]*(?:(?:if|ifn?def|else|elif|endif|define|undef|pragma)\b|include\s*["<].*[>"])/) {
635 last if $lastline =~ /^\S/ && @line && $line[-1] eq "";
636 push(@line, $lastline);
637 push(@line_no, $lastline_no) ;
640 # Read next line and continuation lines
641 last unless defined($lastline = <FH>);
644 $lastline .= $tmp_line
645 while ($lastline =~ /\\$/ && defined($tmp_line = <FH>));
648 $lastline =~ s/^\s+$//;
650 pop(@line), pop(@line_no) while @line && $line[-1] eq "";
655 while (fetch_para()) {
656 # Print initial preprocessor statements and blank lines
657 print shift(@line), "\n"
658 while @line && $line[0] !~ /^[^\#]/;
660 next PARAGRAPH unless @line;
662 death ("Code is not inside a function")
663 if $line[0] =~ /^\s/;
665 # initialize info arrays
676 $ProtoThisXSUB = $WantPrototypes ;
679 while ($kwd = check_keyword("REQUIRE|PROTOTYPES|VERSIONCHECK|INCLUDE")) {
680 &{"${kwd}_handler"}() ;
681 next PARAGRAPH unless @line ;
685 if (check_keyword("BOOT")) {
687 push (@BootCode, $_, @line, "") ;
692 # extract return type, function name and arguments
693 my($ret_type) = TidyType($_);
695 # a function definition needs at least 2 lines
696 blurt ("Error: Function definition too short '$ret_type'"), next PARAGRAPH
699 $static = 1 if $ret_type =~ s/^static\s+//;
701 $func_header = shift(@line);
702 blurt ("Error: Cannot parse function definition from '$func_header'"), next PARAGRAPH
703 unless $func_header =~ /^(?:([\w:]*)::)?(\w+)\s*\(\s*(.*?)\s*\)\s*$/s;
705 ($class, $func_name, $orig_args) = ($1, $2, $3) ;
706 ($pname = $func_name) =~ s/^($Prefix)?/$Packprefix/;
708 # Check for duplicate function definition
709 if (defined $Func_name{"${Packid}_$func_name"} ) {
710 Warn("Warning: duplicate function definition '$func_name' detected")
713 push(@Func_name, "${Packid}_$func_name");
714 push(@Func_pname, $pname);
716 $Func_name{"${Packid}_$func_name"} ++ ;
718 @args = split(/\s*,\s*/, $orig_args);
719 if (defined($class)) {
720 my $arg0 = ((defined($static) or $func_name =~ /^new/) ? "CLASS" : "THIS");
721 unshift(@args, $arg0);
722 ($orig_args = "$arg0, $orig_args") =~ s/^$arg0, $/$arg0/;
724 $orig_args =~ s/"/\\"/g;
725 $min_args = $num_args = @args;
726 foreach $i (0..$num_args-1) {
727 if ($args[$i] =~ s/\.\.\.//) {
730 if ($args[$i] eq '' && $i == $num_args - 1) {
735 if ($args[$i] =~ /^([^=]*[^\s=])\s*=\s*(.*)/s) {
738 $defaults{$args[$i]} = $2;
739 $defaults{$args[$i]} =~ s/"/\\"/g;
741 $proto_arg[$i+1] = '$' ;
743 if (defined($class)) {
744 $func_args = join(", ", @args[1..$#args]);
746 $func_args = join(", ", @args);
748 @args_match{@args} = 1..@args;
750 $PPCODE = grep(/^\s*PPCODE\s*:/, @line);
751 $ALIAS = grep(/^\s*ALIAS\s*:/, @line);
753 # print function header
755 #XS(XS_${Packid}_$func_name)
759 print Q<<"EOF" if $ALIAS ;
763 $cond = ($min_args ? qq(items < $min_args) : 0);
765 elsif ($min_args == $num_args) {
766 $cond = qq(items != $min_args);
769 $cond = qq(items < $min_args || items > $num_args);
772 print Q<<"EOF" if $except;
778 { print Q<<"EOF" if $cond }
780 # croak("Usage: %s($orig_args)", GvNAME(CvGV(cv)));
783 { print Q<<"EOF" if $cond }
785 # croak("Usage: $pname($orig_args)");
788 print Q<<"EOF" if $PPCODE;
792 # Now do a block of some sort.
795 $cond = ''; # last CASE: condidional
796 push(@line, "$END:");
797 push(@line_no, $line_no[-1]);
801 &CASE_handler if check_keyword("CASE");
806 # do initialization of input variables
814 process_keyword("INPUT|PREINIT|ALIAS|PROTOTYPE") ;
816 if (!$thisdone && defined($class)) {
817 if (defined($static) or $func_name =~ /^new/) {
819 $var_types{"CLASS"} = "char *";
820 &generate_init("char *", 1, "CLASS");
824 $var_types{"THIS"} = "$class *";
825 &generate_init("$class *", 1, "THIS");
830 if (/^\s*NOT_IMPLEMENTED_YET/) {
831 print "\n\tcroak(\"$pname: not implemented yet\");\n";
834 if ($ret_type ne "void") {
835 print "\t" . &map_type($ret_type) . "\tRETVAL;\n"
837 $args_match{"RETVAL"} = 0;
838 $var_types{"RETVAL"} = $ret_type;
841 process_keyword("INIT|ALIAS|PROTOTYPE") ;
843 if (check_keyword("PPCODE")) {
845 death ("PPCODE must be last thing") if @line;
846 print "\tPUTBACK;\n\treturn;\n";
847 } elsif (check_keyword("CODE")) {
849 } elsif (defined($class) and $func_name eq "DESTROY") {
851 print "delete THIS;\n";
854 if ($ret_type ne "void") {
858 if (defined($static)) {
859 if ($func_name =~ /^new/) {
860 $func_name = "$class";
864 } elsif (defined($class)) {
865 if ($func_name =~ /^new/) {
866 $func_name .= " $class";
871 $func_name =~ s/^($spat)//
873 print "$func_name($func_args);\n";
877 # do output variables
881 process_keyword("OUTPUT|ALIAS|PROTOTYPE");
883 # all OUTPUT done, so now push the return value on the stack
884 if ($gotRETVAL && $RETVAL_code) {
885 print "\t$RETVAL_code\n";
886 } elsif ($gotRETVAL || $wantRETVAL) {
887 &generate_output($ret_type, 0, 'RETVAL');
891 process_keyword("CLEANUP|ALIAS|PROTOTYPE") ;
893 # print function trailer
897 print Q<<EOF if $except;
900 # sprintf(errbuf, "%s: %s\\tpropagated", Xname, Xreason);
903 if (check_keyword("CASE")) {
904 blurt ("Error: No `CASE:' at top of function")
906 $_ = "CASE: $_"; # Restore CASE: label
909 last if $_ eq "$END:";
910 death(/^$BLOCK_re/o ? "Misplaced `$1:'" : "Junk at end of function");
913 print Q<<EOF if $except;
918 print Q<<EOF unless $PPCODE;
927 # Build the prototype string for the xsub
928 if ($ProtoThisXSUB) {
929 if ($ProtoThisXSUB != 1) {
930 $ProtoXSUB{$pname} = '"' . $ProtoThisXSUB . '"'
934 if ($min_args < $num_args) {
936 $proto_arg[$min_args] .= ";" ;
938 push @proto_arg, "${s}@"
941 $ProtoXSUB{$pname} = '"' . join ("", @proto_arg) . '"'
947 # print initialization routine
952 #XS(boot_$Module_cname)
955 # char* file = __FILE__;
959 print Q<<"EOF" if $WantVersionChk ;
960 # XS_VERSION_BOOTCHECK ;
964 print Q<<"EOF" if defined %XsubAliases ;
971 $pname = shift(@Func_pname);
972 my $newXS = "newXS" ;
975 if ($ProtoXSUB{$pname}) {
976 $newXS = "newXSproto" ;
977 $proto = ", $ProtoXSUB{$pname}" ;
980 if ($XsubAliases{$pname}) {
981 $XsubAliases{$pname}{$pname} = 0
982 unless defined $XsubAliases{$pname}{$pname} ;
983 while ( ($name, $value) = each %{$XsubAliases{$pname}}) {
985 # cv = newXS(\"$name\", XS_$_, file);
986 # XSANY.any_i32 = $value ;
988 print Q<<"EOF" if $proto ;
989 # sv_setpv(cv, $ProtoXSUB{$pname}) ;
994 print " ${newXS}(\"$pname\", XS_$_, file$proto);\n";
998 print Q<<"EOF" if defined %XsubAliases ;
1004 print "\n /* Initialisation Section */\n" ;
1005 print grep (s/$/\n/, @BootCode) ;
1006 print "\n /* End of Initialisation Section */\n\n" ;
1015 warn("Please specify prototyping behavior for $filename (see perlxs manual)\n")
1021 local($type, $num, $init) = @_;
1022 local($arg) = "ST(" . ($num - 1) . ")";
1024 eval qq/print " $init\\\n"/;
1029 # work out the line number
1030 my $line_no = $line_no[@line_no - @line -1] ;
1032 print STDERR "@_ in $filename, line $line_no\n" ;
1048 local($type, $num, $var) = @_;
1049 local($arg) = "ST(" . ($num - 1) . ")";
1050 local($argoff) = $num - 1;
1054 $type = TidyType($type) ;
1055 blurt("Error: '$type' not in typemap"), return
1056 unless defined($type_kind{$type});
1058 ($ntype = $type) =~ s/\s*\*/Ptr/g;
1059 ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//;
1060 $tk = $type_kind{$type};
1061 $tk =~ s/OBJ$/REF/ if $func_name =~ /DESTROY$/;
1063 blurt("Error: No INPUT definition for type '$type' found"), return
1064 unless defined $input_expr{$tk} ;
1065 $expr = $input_expr{$tk};
1066 if ($expr =~ /DO_ARRAY_ELEM/) {
1067 blurt("Error: '$subtype' not in typemap"), return
1068 unless defined($type_kind{$subtype});
1069 blurt("Error: No INPUT definition for type '$subtype' found"), return
1070 unless defined $input_expr{$type_kind{$subtype}} ;
1071 $subexpr = $input_expr{$type_kind{$subtype}};
1072 $subexpr =~ s/ntype/subtype/g;
1073 $subexpr =~ s/\$arg/ST(ix_$var)/g;
1074 $subexpr =~ s/\n\t/\n\t\t/g;
1075 $subexpr =~ s/is not of (.*")/[arg %d] is not of $1, ix_$var + 1/g;
1076 $subexpr =~ s/\$var/${var}[ix_$var - $argoff]/;
1077 $expr =~ s/DO_ARRAY_ELEM/$subexpr/;
1079 if (defined($defaults{$var})) {
1080 $expr =~ s/(\t+)/$1 /g;
1082 eval qq/print "\\t$var;\\n"/;
1083 $deferred .= eval qq/"\\n\\tif (items < $num)\\n\\t $var = $defaults{$var};\\n\\telse {\\n$expr;\\n\\t}\\n"/;
1084 } elsif ($expr !~ /^\t\$var =/) {
1085 eval qq/print "\\t$var;\\n"/;
1086 $deferred .= eval qq/"\\n$expr;\\n"/;
1088 eval qq/print "$expr;\\n"/;
1092 sub generate_output {
1093 local($type, $num, $var) = @_;
1094 local($arg) = "ST(" . ($num - ($num != 0)) . ")";
1095 local($argoff) = $num - 1;
1098 $type = TidyType($type) ;
1099 if ($type =~ /^array\(([^,]*),(.*)\)/) {
1100 print "\tsv_setpvn($arg, (char *)$var, $2 * sizeof($1)), XFree((char *)$var);\n";
1102 blurt("Error: '$type' not in typemap"), return
1103 unless defined($type_kind{$type});
1104 blurt("Error: No OUTPUT definition for type '$type' found"), return
1105 unless defined $output_expr{$type_kind{$type}} ;
1106 ($ntype = $type) =~ s/\s*\*/Ptr/g;
1107 $ntype =~ s/\(\)//g;
1108 ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//;
1109 $expr = $output_expr{$type_kind{$type}};
1110 if ($expr =~ /DO_ARRAY_ELEM/) {
1111 blurt("Error: '$subtype' not in typemap"), return
1112 unless defined($type_kind{$subtype});
1113 blurt("Error: No OUTPUT definition for type '$subtype' found"), return
1114 unless defined $output_expr{$type_kind{$subtype}} ;
1115 $subexpr = $output_expr{$type_kind{$subtype}};
1116 $subexpr =~ s/ntype/subtype/g;
1117 $subexpr =~ s/\$arg/ST(ix_$var)/g;
1118 $subexpr =~ s/\$var/${var}[ix_$var]/g;
1119 $subexpr =~ s/\n\t/\n\t\t/g;
1120 $expr =~ s/DO_ARRAY_ELEM\n/$subexpr/;
1121 eval "print qq\a$expr\a";
1123 elsif ($var eq 'RETVAL') {
1124 if ($expr =~ /^\t\$arg = /) {
1125 eval "print qq\a$expr\a";
1126 print "\tsv_2mortal(ST(0));\n";
1129 print "\tST(0) = sv_newmortal();\n";
1130 eval "print qq\a$expr\a";
1133 elsif ($arg =~ /^ST\(\d+\)$/) {
1134 eval "print qq\a$expr\a";
1143 $type =~ s/^array\(([^,]*),(.*)\).*/$1 */s;
1149 # If this is VMS, the exit status has meaning to the shell, so we
1150 # use a predictable value (SS$_Normal or SS$_Abort) rather than an
1152 exit ($Is_VMS ? ($errors ? 44 : 1) : $errors) ;