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2304df62 1#!./miniperl
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2
3=head1 NAME
4
5xsubpp - compiler to convert Perl XS code into C code
6
7=head1 SYNOPSIS
8
b26a54d0 9B<xsubpp> [B<-v>] [B<-C++>] [B<-except>] [B<-s pattern>] [B<-prototypes>] [B<-noversioncheck>] [B<-nolinenumbers>] [B<-nooptimize>] [B<-typemap typemap>] ... file.xs
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10
11=head1 DESCRIPTION
12
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13This compiler is typically run by the makefiles created by L<ExtUtils::MakeMaker>.
14
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15I<xsubpp> will compile XS code into C code by embedding the constructs
16necessary to let C functions manipulate Perl values and creates the glue
17necessary to let Perl access those functions. The compiler uses typemaps to
18determine how to map C function parameters and variables to Perl values.
19
20The compiler will search for typemap files called I<typemap>. It will use
21the following search path to find default typemaps, with the rightmost
22typemap taking precedence.
23
24 ../../../typemap:../../typemap:../typemap:typemap
25
26=head1 OPTIONS
27
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28Note that the C<XSOPT> MakeMaker option may be used to add these options to
29any makefiles generated by MakeMaker.
30
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31=over 5
32
33=item B<-C++>
34
35Adds ``extern "C"'' to the C code.
36
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37=item B<-except>
38
39Adds exception handling stubs to the C code.
40
41=item B<-typemap typemap>
42
43Indicates that a user-supplied typemap should take precedence over the
44default typemaps. This option may be used multiple times, with the last
45typemap having the highest precedence.
46
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47=item B<-v>
48
49Prints the I<xsubpp> version number to standard output, then exits.
50
8fc38fda 51=item B<-prototypes>
382b8d97 52
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53By default I<xsubpp> will not automatically generate prototype code for
54all xsubs. This flag will enable prototypes.
55
56=item B<-noversioncheck>
57
58Disables the run time test that determines if the object file (derived
59from the C<.xs> file) and the C<.pm> files have the same version
60number.
382b8d97 61
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62=item B<-nolinenumbers>
63
64Prevents the inclusion of `#line' directives in the output.
65
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66=item B<-nooptimize>
67
68Disables certain optimizations. The only optimization that is currently
69affected is the use of I<target>s by the output C code (see L<perlguts>).
70This may significantly slow down the generated code, but this is the way
71B<xsubpp> of 5.005 and earlier operated.
72
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73=item B<-noinout>
74
75Disable recognition of C<IN>, C<OUT_LIST> and C<INOUT_LIST> declarations.
76
77=item B<-noargtypes>
78
79Disable recognition of ANSI-like descriptions of function signature.
80
c5be433b 81=back
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82
83=head1 ENVIRONMENT
84
85No environment variables are used.
86
87=head1 AUTHOR
88
89Larry Wall
90
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91=head1 MODIFICATION HISTORY
92
8e07c86e 93See the file F<changes.pod>.
e50aee73 94
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95=head1 SEE ALSO
96
55a00e51 97perl(1), perlxs(1), perlxstut(1)
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98
99=cut
93a17b20 100
382b8d97 101require 5.002;
774d564b 102use Cwd;
4230ab3f 103use vars '$cplusplus';
7ad6fb0b 104use vars '%v';
382b8d97 105
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106use Config;
107
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108sub Q ;
109
774d564b 110# Global Constants
774d564b 111
7817ba4d 112$XSUBPP_version = "1.9508";
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113
114my ($Is_VMS, $SymSet);
115if ($^O eq 'VMS') {
116 $Is_VMS = 1;
117 # Establish set of global symbols with max length 28, since xsubpp
118 # will later add the 'XS_' prefix.
119 require ExtUtils::XSSymSet;
120 $SymSet = new ExtUtils::XSSymSet 28;
121}
8fc38fda 122
c07a80fd 123$FH = 'File0000' ;
8fc38fda 124
11416672 125$usage = "Usage: xsubpp [-v] [-C++] [-except] [-prototypes] [-noversioncheck] [-nolinenumbers] [-nooptimize] [-noinout] [-noargtypes] [-s pattern] [-typemap typemap]... file.xs\n";
f06db76b 126
382b8d97 127$proto_re = "[" . quotemeta('\$%&*@;') . "]" ;
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128# mjn
129$OBJ = 1 if $Config{'ccflags'} =~ /PERL_OBJECT/i;
93a17b20 130
8e07c86e 131$except = "";
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132$WantPrototypes = -1 ;
133$WantVersionChk = 1 ;
134$ProtoUsed = 0 ;
6f1abe2b 135$WantLineNumbers = 1 ;
b26a54d0 136$WantOptimize = 1 ;
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137
138my $process_inout = 1;
139my $process_argtypes = 1;
140
8e07c86e 141SWITCH: while (@ARGV and $ARGV[0] =~ /^-./) {
93a17b20 142 $flag = shift @ARGV;
e50aee73 143 $flag =~ s/^-// ;
ff68c719 144 $spat = quotemeta shift, next SWITCH if $flag eq 's';
8990e307 145 $cplusplus = 1, next SWITCH if $flag eq 'C++';
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146 $WantPrototypes = 0, next SWITCH if $flag eq 'noprototypes';
147 $WantPrototypes = 1, next SWITCH if $flag eq 'prototypes';
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148 $WantVersionChk = 0, next SWITCH if $flag eq 'noversioncheck';
149 $WantVersionChk = 1, next SWITCH if $flag eq 'versioncheck';
c5be433b 150 # XXX left this in for compat
b207eff1 151 $WantCAPI = 1, next SWITCH if $flag eq 'object_capi';
8e07c86e 152 $except = " TRY", next SWITCH if $flag eq 'except';
8990e307 153 push(@tm,shift), next SWITCH if $flag eq 'typemap';
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154 $WantLineNumbers = 0, next SWITCH if $flag eq 'nolinenumbers';
155 $WantLineNumbers = 1, next SWITCH if $flag eq 'linenumbers';
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156 $WantOptimize = 0, next SWITCH if $flag eq 'nooptimize';
157 $WantOptimize = 1, next SWITCH if $flag eq 'optimize';
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158 $process_inout = 0, next SWITCH if $flag eq 'noinout';
159 $process_inout = 1, next SWITCH if $flag eq 'inout';
160 $process_argtypes = 0, next SWITCH if $flag eq 'noargtypes';
161 $process_argtypes = 1, next SWITCH if $flag eq 'argtypes';
b26a54d0 162 (print "xsubpp version $XSUBPP_version\n"), exit
8e07c86e 163 if $flag eq 'v';
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164 die $usage;
165}
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166if ($WantPrototypes == -1)
167 { $WantPrototypes = 0}
168else
169 { $ProtoUsed = 1 }
170
171
8990e307 172@ARGV == 1 or die $usage;
c2960299 173($dir, $filename) = $ARGV[0] =~ m#(.*)/(.*)#
57497940 174 or ($dir, $filename) = $ARGV[0] =~ m#(.*)\\(.*)#
c2960299 175 or ($dir, $filename) = $ARGV[0] =~ m#(.*[>\]])(.*)#
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176 or ($dir, $filename) = ('.', $ARGV[0]);
177chdir($dir);
774d564b 178$pwd = cwd();
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179
180++ $IncludedFiles{$ARGV[0]} ;
93a17b20 181
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182my(@XSStack) = ({type => 'none'}); # Stack of conditionals and INCLUDEs
183my($XSS_work_idx, $cpp_next_tmp) = (0, "XSubPPtmpAAAA");
aa689395 184
4230ab3f 185
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186sub TrimWhitespace
187{
188 $_[0] =~ s/^\s+|\s+$//go ;
189}
190
191sub TidyType
192{
193 local ($_) = @_ ;
194
195 # rationalise any '*' by joining them into bunches and removing whitespace
196 s#\s*(\*+)\s*#$1#g;
e50aee73 197 s#(\*+)# $1 #g ;
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198
199 # change multiple whitespace into a single space
200 s/\s+/ /g ;
201
202 # trim leading & trailing whitespace
203 TrimWhitespace($_) ;
204
205 $_ ;
206}
207
93a17b20 208$typemap = shift @ARGV;
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209foreach $typemap (@tm) {
210 die "Can't find $typemap in $pwd\n" unless -r $typemap;
93a17b20 211}
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212unshift @tm, qw(../../../../lib/ExtUtils/typemap ../../../lib/ExtUtils/typemap
213 ../../lib/ExtUtils/typemap ../../../typemap ../../typemap
214 ../typemap typemap);
8990e307 215foreach $typemap (@tm) {
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216 next unless -e $typemap ;
217 # skip directories, binary files etc.
218 warn("Warning: ignoring non-text typemap file '$typemap'\n"), next
219 unless -T $typemap ;
220 open(TYPEMAP, $typemap)
221 or warn ("Warning: could not open typemap file '$typemap': $!\n"), next;
e50aee73 222 $mode = 'Typemap';
c2960299 223 $junk = "" ;
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224 $current = \$junk;
225 while (<TYPEMAP>) {
e50aee73 226 next if /^\s*#/;
e1f0c0aa 227 my $line_no = $. + 1;
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228 if (/^INPUT\s*$/) { $mode = 'Input'; $current = \$junk; next; }
229 if (/^OUTPUT\s*$/) { $mode = 'Output'; $current = \$junk; next; }
230 if (/^TYPEMAP\s*$/) { $mode = 'Typemap'; $current = \$junk; next; }
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231 if ($mode eq 'Typemap') {
232 chomp;
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233 my $line = $_ ;
234 TrimWhitespace($_) ;
235 # skip blank lines and comment lines
236 next if /^$/ or /^#/ ;
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237 my($type,$kind, $proto) = /^\s*(.*?\S)\s+(\S+)\s*($proto_re*)\s*$/ or
238 warn("Warning: File '$typemap' Line $. '$line' TYPEMAP entry needs 2 or 3 columns\n"), next;
239 $type = TidyType($type) ;
240 $type_kind{$type} = $kind ;
241 # prototype defaults to '$'
93d3b392 242 $proto = "\$" unless $proto ;
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243 warn("Warning: File '$typemap' Line $. '$line' Invalid prototype '$proto'\n")
244 unless ValidProtoString($proto) ;
245 $proto_letter{$type} = C_string($proto) ;
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246 }
247 elsif (/^\s/) {
248 $$current .= $_;
463ee0b2 249 }
e50aee73 250 elsif ($mode eq 'Input') {
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251 s/\s+$//;
252 $input_expr{$_} = '';
253 $current = \$input_expr{$_};
93a17b20 254 }
8990e307 255 else {
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256 s/\s+$//;
257 $output_expr{$_} = '';
258 $current = \$output_expr{$_};
93a17b20 259 }
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260 }
261 close(TYPEMAP);
262}
93a17b20 263
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264foreach $key (keys %input_expr) {
265 $input_expr{$key} =~ s/\n+$//;
266}
93a17b20 267
14455d6c 268$bal = qr[(?:(?>[^()]+)|\((??{ $bal })\))*]; # ()-balanced
b26a54d0 269$cast = qr[(?:\(\s*SV\s*\*\s*\)\s*)?]; # Optional (SV*) cast
14455d6c 270$size = qr[,\s* (??{ $bal }) ]x; # Third arg (to setpvn)
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271
272foreach $key (keys %output_expr) {
273 use re 'eval';
274
275 my ($t, $with_size, $arg, $sarg) =
276 ($output_expr{$key} =~
438cc608 277 m[^ \s+ sv_set ( [iunp] ) v (n)? # Type, is_setpvn
b26a54d0 278 \s* \( \s* $cast \$arg \s* ,
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279 \s* ( (??{ $bal }) ) # Set from
280 ( (??{ $size }) )? # Possible sizeof set-from
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281 \) \s* ; \s* $
282 ]x);
283 $targetable{$key} = [$t, $with_size, $arg, $sarg] if $t;
284}
285
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286$END = "!End!\n\n"; # "impossible" keyword (multiple newline)
287
288# Match an XS keyword
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289$BLOCK_re= '\s*(' . join('|', qw(
290 REQUIRE BOOT CASE PREINIT INPUT INIT CODE PPCODE OUTPUT
be3174d2 291 CLEANUP ALIAS ATTRS PROTOTYPES PROTOTYPE VERSIONCHECK INCLUDE
63385af5 292 SCOPE INTERFACE INTERFACE_MACRO C_ARGS POSTCALL
382b8d97 293 )) . "|$END)\\s*:";
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294
295# Input: ($_, @line) == unparsed input.
296# Output: ($_, @line) == (rest of line, following lines).
297# Return: the matched keyword if found, otherwise 0
298sub check_keyword {
299 $_ = shift(@line) while !/\S/ && @line;
300 s/^(\s*)($_[0])\s*:\s*(?:#.*)?/$1/s && $2;
301}
302
efbca139 303my ($C_group_rex, $C_arg);
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304# Group in C (no support for comments or literals)
305$C_group_rex = qr/ [({\[]
14455d6c 306 (?: (?> [^()\[\]{}]+ ) | (??{ $C_group_rex }) )*
f8b8e0a4
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307 [)}\]] /x ;
308# Chunk in C without comma at toplevel (no comments):
309$C_arg = qr/ (?: (?> [^()\[\]{},"']+ )
14455d6c 310 | (??{ $C_group_rex })
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311 | " (?: (?> [^\\"]+ )
312 | \\.
313 )* " # String literal
314 | ' (?: (?> [^\\']+ ) | \\. )* ' # Char literal
315 )* /xs;
8e07c86e 316
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317if ($WantLineNumbers) {
318 {
319 package xsubpp::counter;
320 sub TIEHANDLE {
321 my ($class, $cfile) = @_;
322 my $buf = "";
323 $SECTION_END_MARKER = "#line --- \"$cfile\"";
324 $line_no = 1;
325 bless \$buf;
326 }
327
328 sub PRINT {
329 my $self = shift;
330 for (@_) {
331 $$self .= $_;
332 while ($$self =~ s/^([^\n]*\n)//) {
333 my $line = $1;
334 ++ $line_no;
335 $line =~ s|^\#line\s+---(?=\s)|#line $line_no|;
336 print STDOUT $line;
337 }
338 }
339 }
340
341 sub PRINTF {
342 my $self = shift;
343 my $fmt = shift;
344 $self->PRINT(sprintf($fmt, @_));
345 }
346
347 sub DESTROY {
348 # Not necessary if we're careful to end with a "\n"
349 my $self = shift;
350 print STDOUT $$self;
351 }
352 }
353
354 my $cfile = $filename;
355 $cfile =~ s/\.xs$/.c/i or $cfile .= ".c";
356 tie(*PSEUDO_STDOUT, 'xsubpp::counter', $cfile);
357 select PSEUDO_STDOUT;
358}
359
8e07c86e 360sub print_section {
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361 # the "do" is required for right semantics
362 do { $_ = shift(@line) } while !/\S/ && @line;
363
364 print("#line ", $line_no[@line_no - @line -1], " \"$filename\"\n")
d3308daf 365 if $WantLineNumbers && !/^\s*#\s*line\b/ && !/^#if XSubPPtmp/;
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366 for (; defined($_) && !/^$BLOCK_re/o; $_ = shift(@line)) {
367 print "$_\n";
368 }
6f1abe2b 369 print "$xsubpp::counter::SECTION_END_MARKER\n" if $WantLineNumbers;
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370}
371
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372sub merge_section {
373 my $in = '';
374
375 while (!/\S/ && @line) {
376 $_ = shift(@line);
377 }
378
379 for (; defined($_) && !/^$BLOCK_re/o; $_ = shift(@line)) {
380 $in .= "$_\n";
381 }
382 chomp $in;
383 return $in;
384}
385
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PP
386sub process_keyword($)
387{
388 my($pattern) = @_ ;
389 my $kwd ;
390
391 &{"${kwd}_handler"}()
392 while $kwd = check_keyword($pattern) ;
393}
394
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395sub CASE_handler {
396 blurt ("Error: `CASE:' after unconditional `CASE:'")
397 if $condnum && $cond eq '';
398 $cond = $_;
399 TrimWhitespace($cond);
400 print " ", ($condnum++ ? " else" : ""), ($cond ? " if ($cond)\n" : "\n");
401 $_ = '' ;
402}
403
404sub INPUT_handler {
405 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
406 last if /^\s*NOT_IMPLEMENTED_YET/;
407 next unless /\S/; # skip blank lines
408
409 TrimWhitespace($_) ;
410 my $line = $_ ;
411
412 # remove trailing semicolon if no initialisation
7ad6fb0b 413 s/\s*;$//g unless /[=;+].*\S/ ;
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414
415 # check for optional initialisation code
416 my $var_init = '' ;
7ad6fb0b 417 $var_init = $1 if s/\s*([=;+].*)$//s ;
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418 $var_init =~ s/"/\\"/g;
419
420 s/\s+/ /g;
0f568861 421 my ($var_type, $var_addr, $var_name) = /^(.*?[^&\s])\s*(\&?)\s*\b(\w+)$/s
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422 or blurt("Error: invalid argument declaration '$line'"), next;
423
424 # Check for duplicate definitions
425 blurt ("Error: duplicate definition of argument '$var_name' ignored"), next
f8b8e0a4
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426 if $arg_list{$var_name}++
427 or defined $arg_types{$var_name} and not $processing_arg_with_types;
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428
429 $thisdone |= $var_name eq "THIS";
430 $retvaldone |= $var_name eq "RETVAL";
431 $var_types{$var_name} = $var_type;
ddf6bed1
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432 # XXXX This check is a safeguard against the unfinished conversion of
433 # generate_init(). When generate_init() is fixed,
434 # one can use 2-args map_type() unconditionally.
435 if ($var_type =~ / \( \s* \* \s* \) /x) {
436 # Function pointers are not yet supported with &output_init!
437 print "\t" . &map_type($var_type, $var_name);
438 $name_printed = 1;
439 } else {
440 print "\t" . &map_type($var_type);
441 $name_printed = 0;
442 }
8e07c86e 443 $var_num = $args_match{$var_name};
382b8d97 444
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445 $proto_arg[$var_num] = ProtoString($var_type)
446 if $var_num ;
0f568861 447 $func_args =~ s/\b($var_name)\b/&$1/ if $var_addr;
f8b8e0a4 448 if ($var_init =~ /^[=;]\s*NO_INIT\s*;?\s*$/
0f568861 449 or $in_out{$var_name} and $in_out{$var_name} =~ /^OUT/
f8b8e0a4 450 and $var_init !~ /\S/) {
ddf6bed1
IZ
451 if ($name_printed) {
452 print ";\n";
453 } else {
9bea678f 454 print "\t$var_name;\n";
ddf6bed1 455 }
8e07c86e 456 } elsif ($var_init =~ /\S/) {
ddf6bed1 457 &output_init($var_type, $var_num, $var_name, $var_init, $name_printed);
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458 } elsif ($var_num) {
459 # generate initialization code
ddf6bed1 460 &generate_init($var_type, $var_num, $var_name, $name_printed);
8e07c86e
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461 } else {
462 print ";\n";
463 }
464 }
465}
466
467sub OUTPUT_handler {
468 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
469 next unless /\S/;
ef50df4b
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470 if (/^\s*SETMAGIC\s*:\s*(ENABLE|DISABLE)\s*/) {
471 $DoSetMagic = ($1 eq "ENABLE" ? 1 : 0);
472 next;
473 }
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474 my ($outarg, $outcode) = /^\s*(\S+)\s*(.*?)\s*$/s ;
475 blurt ("Error: duplicate OUTPUT argument '$outarg' ignored"), next
476 if $outargs{$outarg} ++ ;
477 if (!$gotRETVAL and $outarg eq 'RETVAL') {
478 # deal with RETVAL last
479 $RETVAL_code = $outcode ;
480 $gotRETVAL = 1 ;
481 next ;
482 }
483 blurt ("Error: OUTPUT $outarg not an argument"), next
484 unless defined($args_match{$outarg});
485 blurt("Error: No input definition for OUTPUT argument '$outarg' - ignored"), next
486 unless defined $var_types{$outarg} ;
f78230ad 487 $var_num = $args_match{$outarg};
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488 if ($outcode) {
489 print "\t$outcode\n";
f78230ad 490 print "\tSvSETMAGIC(ST(" , $var_num-1 , "));\n" if $DoSetMagic;
8e07c86e 491 } else {
ef50df4b 492 &generate_output($var_types{$outarg}, $var_num, $outarg, $DoSetMagic);
8e07c86e 493 }
0f568861
IZ
494 delete $in_out{$outarg} # No need to auto-OUTPUT
495 if exists $in_out{$outarg} and $in_out{$outarg} =~ /OUT$/;
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496 }
497}
498
cfc02341
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499sub C_ARGS_handler() {
500 my $in = merge_section();
501
502 TrimWhitespace($in);
503 $func_args = $in;
504}
505
506sub INTERFACE_MACRO_handler() {
507 my $in = merge_section();
508
509 TrimWhitespace($in);
510 if ($in =~ /\s/) { # two
511 ($interface_macro, $interface_macro_set) = split ' ', $in;
512 } else {
513 $interface_macro = $in;
514 $interface_macro_set = 'UNKNOWN_CVT'; # catch later
515 }
516 $interface = 1; # local
517 $Interfaces = 1; # global
518}
519
520sub INTERFACE_handler() {
521 my $in = merge_section();
522
523 TrimWhitespace($in);
524
525 foreach (split /[\s,]+/, $in) {
526 $Interfaces{$_} = $_;
527 }
528 print Q<<"EOF";
529# XSFUNCTION = $interface_macro($ret_type,cv,XSANY.any_dptr);
530EOF
531 $interface = 1; # local
532 $Interfaces = 1; # global
533}
534
8fc38fda
PP
535sub CLEANUP_handler() { print_section() }
536sub PREINIT_handler() { print_section() }
63385af5 537sub POSTCALL_handler() { print_section() }
8fc38fda
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538sub INIT_handler() { print_section() }
539
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540sub GetAliases
541{
542 my ($line) = @_ ;
543 my ($orig) = $line ;
544 my ($alias) ;
545 my ($value) ;
546
547 # Parse alias definitions
548 # format is
549 # alias = value alias = value ...
550
551 while ($line =~ s/^\s*([\w:]+)\s*=\s*(\w+)\s*//) {
552 $alias = $1 ;
553 $orig_alias = $alias ;
554 $value = $2 ;
555
556 # check for optional package definition in the alias
557 $alias = $Packprefix . $alias if $alias !~ /::/ ;
558
559 # check for duplicate alias name & duplicate value
560 Warn("Warning: Ignoring duplicate alias '$orig_alias'")
4230ab3f 561 if defined $XsubAliases{$alias} ;
8e07c86e 562
4230ab3f
PP
563 Warn("Warning: Aliases '$orig_alias' and '$XsubAliasValues{$value}' have identical values")
564 if $XsubAliasValues{$value} ;
8e07c86e 565
4230ab3f
PP
566 $XsubAliases = 1;
567 $XsubAliases{$alias} = $value ;
568 $XsubAliasValues{$value} = $orig_alias ;
8e07c86e
AD
569 }
570
571 blurt("Error: Cannot parse ALIAS definitions from '$orig'")
572 if $line ;
573}
574
be3174d2
GS
575sub ATTRS_handler ()
576{
577 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
578 next unless /\S/;
579 TrimWhitespace($_) ;
580 push @Attributes, $_;
581 }
582}
583
382b8d97 584sub ALIAS_handler ()
8e07c86e
AD
585{
586 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
587 next unless /\S/;
588 TrimWhitespace($_) ;
589 GetAliases($_) if $_ ;
590 }
591}
592
382b8d97 593sub REQUIRE_handler ()
8e07c86e
AD
594{
595 # the rest of the current line should contain a version number
596 my ($Ver) = $_ ;
597
598 TrimWhitespace($Ver) ;
599
600 death ("Error: REQUIRE expects a version number")
601 unless $Ver ;
602
603 # check that the version number is of the form n.n
604 death ("Error: REQUIRE: expected a number, got '$Ver'")
605 unless $Ver =~ /^\d+(\.\d*)?/ ;
606
607 death ("Error: xsubpp $Ver (or better) required--this is only $XSUBPP_version.")
608 unless $XSUBPP_version >= $Ver ;
609}
610
8fc38fda
PP
611sub VERSIONCHECK_handler ()
612{
613 # the rest of the current line should contain either ENABLE or
614 # DISABLE
615
616 TrimWhitespace($_) ;
617
618 # check for ENABLE/DISABLE
619 death ("Error: VERSIONCHECK: ENABLE/DISABLE")
620 unless /^(ENABLE|DISABLE)/i ;
621
622 $WantVersionChk = 1 if $1 eq 'ENABLE' ;
623 $WantVersionChk = 0 if $1 eq 'DISABLE' ;
624
625}
626
382b8d97
PM
627sub PROTOTYPE_handler ()
628{
7d41bd0a
PM
629 my $specified ;
630
c07a80fd
PP
631 death("Error: Only 1 PROTOTYPE definition allowed per xsub")
632 if $proto_in_this_xsub ++ ;
633
382b8d97
PM
634 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
635 next unless /\S/;
7d41bd0a 636 $specified = 1 ;
382b8d97
PM
637 TrimWhitespace($_) ;
638 if ($_ eq 'DISABLE') {
639 $ProtoThisXSUB = 0
640 }
641 elsif ($_ eq 'ENABLE') {
642 $ProtoThisXSUB = 1
643 }
644 else {
645 # remove any whitespace
646 s/\s+//g ;
647 death("Error: Invalid prototype '$_'")
648 unless ValidProtoString($_) ;
649 $ProtoThisXSUB = C_string($_) ;
650 }
651 }
c07a80fd 652
7d41bd0a
PM
653 # If no prototype specified, then assume empty prototype ""
654 $ProtoThisXSUB = 2 unless $specified ;
655
8fc38fda 656 $ProtoUsed = 1 ;
c07a80fd 657
382b8d97
PM
658}
659
db3b9414
PP
660sub SCOPE_handler ()
661{
662 death("Error: Only 1 SCOPE declaration allowed per xsub")
663 if $scope_in_this_xsub ++ ;
664
665 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
666 next unless /\S/;
667 TrimWhitespace($_) ;
668 if ($_ =~ /^DISABLE/i) {
669 $ScopeThisXSUB = 0
670 }
671 elsif ($_ =~ /^ENABLE/i) {
672 $ScopeThisXSUB = 1
673 }
674 }
675
676}
677
382b8d97
PM
678sub PROTOTYPES_handler ()
679{
680 # the rest of the current line should contain either ENABLE or
681 # DISABLE
682
683 TrimWhitespace($_) ;
684
685 # check for ENABLE/DISABLE
686 death ("Error: PROTOTYPES: ENABLE/DISABLE")
687 unless /^(ENABLE|DISABLE)/i ;
688
689 $WantPrototypes = 1 if $1 eq 'ENABLE' ;
690 $WantPrototypes = 0 if $1 eq 'DISABLE' ;
8fc38fda 691 $ProtoUsed = 1 ;
382b8d97
PM
692
693}
694
8fc38fda
PP
695sub INCLUDE_handler ()
696{
697 # the rest of the current line should contain a valid filename
698
699 TrimWhitespace($_) ;
700
8fc38fda
PP
701 death("INCLUDE: filename missing")
702 unless $_ ;
703
704 death("INCLUDE: output pipe is illegal")
705 if /^\s*\|/ ;
706
707 # simple minded recursion detector
708 death("INCLUDE loop detected")
709 if $IncludedFiles{$_} ;
710
711 ++ $IncludedFiles{$_} unless /\|\s*$/ ;
712
713 # Save the current file context.
4230ab3f
PP
714 push(@XSStack, {
715 type => 'file',
8fc38fda
PP
716 LastLine => $lastline,
717 LastLineNo => $lastline_no,
718 Line => \@line,
719 LineNo => \@line_no,
720 Filename => $filename,
c07a80fd 721 Handle => $FH,
8fc38fda
PP
722 }) ;
723
c07a80fd 724 ++ $FH ;
8fc38fda
PP
725
726 # open the new file
c07a80fd 727 open ($FH, "$_") or death("Cannot open '$_': $!") ;
8fc38fda
PP
728
729 print Q<<"EOF" ;
730#
731#/* INCLUDE: Including '$_' from '$filename' */
732#
733EOF
734
8fc38fda
PP
735 $filename = $_ ;
736
c07a80fd
PP
737 # Prime the pump by reading the first
738 # non-blank line
739
740 # skip leading blank lines
741 while (<$FH>) {
742 last unless /^\s*$/ ;
743 }
744
745 $lastline = $_ ;
8fc38fda
PP
746 $lastline_no = $. ;
747
748}
749
750sub PopFile()
751{
4230ab3f
PP
752 return 0 unless $XSStack[-1]{type} eq 'file' ;
753
754 my $data = pop @XSStack ;
8fc38fda
PP
755 my $ThisFile = $filename ;
756 my $isPipe = ($filename =~ /\|\s*$/) ;
757
758 -- $IncludedFiles{$filename}
759 unless $isPipe ;
760
c07a80fd 761 close $FH ;
8fc38fda 762
c07a80fd 763 $FH = $data->{Handle} ;
8fc38fda
PP
764 $filename = $data->{Filename} ;
765 $lastline = $data->{LastLine} ;
766 $lastline_no = $data->{LastLineNo} ;
767 @line = @{ $data->{Line} } ;
768 @line_no = @{ $data->{LineNo} } ;
4230ab3f 769
8fc38fda
PP
770 if ($isPipe and $? ) {
771 -- $lastline_no ;
772 print STDERR "Error reading from pipe '$ThisFile': $! in $filename, line $lastline_no\n" ;
773 exit 1 ;
774 }
775
776 print Q<<"EOF" ;
777#
778#/* INCLUDE: Returning to '$filename' from '$ThisFile' */
779#
780EOF
781
782 return 1 ;
783}
784
382b8d97
PM
785sub ValidProtoString ($)
786{
787 my($string) = @_ ;
788
789 if ( $string =~ /^$proto_re+$/ ) {
790 return $string ;
791 }
792
793 return 0 ;
794}
795
796sub C_string ($)
797{
798 my($string) = @_ ;
799
800 $string =~ s[\\][\\\\]g ;
801 $string ;
802}
803
804sub ProtoString ($)
805{
806 my ($type) = @_ ;
807
93d3b392 808 $proto_letter{$type} or "\$" ;
382b8d97
PM
809}
810
8e07c86e
AD
811sub check_cpp {
812 my @cpp = grep(/^\#\s*(?:if|e\w+)/, @line);
813 if (@cpp) {
814 my ($cpp, $cpplevel);
815 for $cpp (@cpp) {
816 if ($cpp =~ /^\#\s*if/) {
817 $cpplevel++;
818 } elsif (!$cpplevel) {
819 Warn("Warning: #else/elif/endif without #if in this function");
4230ab3f
PP
820 print STDERR " (precede it with a blank line if the matching #if is outside the function)\n"
821 if $XSStack[-1]{type} eq 'if';
8e07c86e
AD
822 return;
823 } elsif ($cpp =~ /^\#\s*endif/) {
824 $cpplevel--;
825 }
826 }
827 Warn("Warning: #if without #endif in this function") if $cpplevel;
828 }
829}
830
831
8990e307 832sub Q {
e50aee73 833 my($text) = @_;
4633a7c4 834 $text =~ s/^#//gm;
2304df62
AD
835 $text =~ s/\[\[/{/g;
836 $text =~ s/\]\]/}/g;
8990e307 837 $text;
93a17b20
LW
838}
839
c07a80fd 840open($FH, $filename) or die "cannot open $filename: $!\n";
c2960299 841
f06db76b 842# Identify the version of xsubpp used
f06db76b 843print <<EOM ;
e50aee73
AD
844/*
845 * This file was generated automatically by xsubpp version $XSUBPP_version from the
93d3b392 846 * contents of $filename. Do not edit this file, edit $filename instead.
e50aee73
AD
847 *
848 * ANY CHANGES MADE HERE WILL BE LOST!
f06db76b
AD
849 *
850 */
e50aee73 851
f06db76b 852EOM
6f1abe2b
JT
853
854
855print("#line 1 \"$filename\"\n")
856 if $WantLineNumbers;
f06db76b 857
e03d20b3 858firstmodule:
c07a80fd 859while (<$FH>) {
e03d20b3 860 if (/^=/) {
7817ba4d 861 my $podstartline = $.;
e03d20b3 862 do {
7817ba4d
NC
863 if (/^=cut\s*$/) {
864 print("/* Skipped embedded POD. */\n");
865 printf("#line %d \"$filename\"\n", $. + 1)
866 if $WantLineNumbers;
867 next firstmodule
868 }
869
e03d20b3 870 } while (<$FH>);
7817ba4d
NC
871 # At this point $. is at end of file so die won't state the start
872 # of the problem, and as we haven't yet read any lines &death won't
873 # show the correct line in the message either.
874 die ("Error: Unterminated pod in $filename, line $podstartline\n")
875 unless $lastline;
e03d20b3 876 }
e50aee73
AD
877 last if ($Module, $Package, $Prefix) =
878 /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/;
01f988be
GS
879
880 if ($OBJ) {
b85ee828 881 s/#if(?:def\s|\s+defined)\s*(\(__cplusplus\)|__cplusplus)/#if defined(__cplusplus) && !defined(PERL_OBJECT)/;
01f988be 882 }
a0d0e21e 883 print $_;
93a17b20 884}
e50aee73
AD
885&Exit unless defined $_;
886
cfc02341
IZ
887print "$xsubpp::counter::SECTION_END_MARKER\n" if $WantLineNumbers;
888
8fc38fda
PP
889$lastline = $_;
890$lastline_no = $.;
93a17b20 891
c07a80fd 892# Read next xsub into @line from ($lastline, <$FH>).
2304df62
AD
893sub fetch_para {
894 # parse paragraph
4230ab3f
PP
895 death ("Error: Unterminated `#if/#ifdef/#ifndef'")
896 if !defined $lastline && $XSStack[-1]{type} eq 'if';
2304df62 897 @line = ();
c2960299 898 @line_no = () ;
4230ab3f 899 return PopFile() if !defined $lastline;
e50aee73
AD
900
901 if ($lastline =~
902 /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/) {
903 $Module = $1;
8e07c86e
AD
904 $Package = defined($2) ? $2 : ''; # keep -w happy
905 $Prefix = defined($3) ? $3 : ''; # keep -w happy
ff68c719 906 $Prefix = quotemeta $Prefix ;
e50aee73 907 ($Module_cname = $Module) =~ s/\W/_/g;
8e07c86e 908 ($Packid = $Package) =~ tr/:/_/;
e50aee73 909 $Packprefix = $Package;
8e07c86e 910 $Packprefix .= "::" if $Packprefix ne "";
2304df62 911 $lastline = "";
e50aee73
AD
912 }
913
914 for(;;) {
e03d20b3 915 # Skip embedded PODs
413e5597 916 while ($lastline =~ /^=/) {
e03d20b3
GS
917 while ($lastline = <$FH>) {
918 last if ($lastline =~ /^=cut\s*$/);
919 }
920 death ("Error: Unterminated pod") unless $lastline;
921 $lastline = <$FH>;
922 chomp $lastline;
923 $lastline =~ s/^\s+$//;
924 }
e50aee73 925 if ($lastline !~ /^\s*#/ ||
4230ab3f
PP
926 # CPP directives:
927 # ANSI: if ifdef ifndef elif else endif define undef
928 # line error pragma
929 # gcc: warning include_next
930 # obj-c: import
931 # others: ident (gcc notes that some cpps have this one)
932 $lastline =~ /^#[ \t]*(?:(?:if|ifn?def|elif|else|endif|define|undef|pragma|error|warning|line\s+\d+|ident)\b|(?:include(?:_next)?|import)\s*["<].*[>"])/) {
e50aee73
AD
933 last if $lastline =~ /^\S/ && @line && $line[-1] eq "";
934 push(@line, $lastline);
935 push(@line_no, $lastline_no) ;
93a17b20 936 }
e50aee73
AD
937
938 # Read next line and continuation lines
c07a80fd 939 last unless defined($lastline = <$FH>);
e50aee73
AD
940 $lastline_no = $.;
941 my $tmp_line;
942 $lastline .= $tmp_line
c07a80fd 943 while ($lastline =~ /\\$/ && defined($tmp_line = <$FH>));
f8b8e0a4 944
8e07c86e 945 chomp $lastline;
e50aee73 946 $lastline =~ s/^\s+$//;
2304df62 947 }
e50aee73 948 pop(@line), pop(@line_no) while @line && $line[-1] eq "";
e50aee73 949 1;
2304df62 950}
93a17b20 951
c2960299 952PARAGRAPH:
8e07c86e 953while (fetch_para()) {
e50aee73 954 # Print initial preprocessor statements and blank lines
4230ab3f
PP
955 while (@line && $line[0] !~ /^[^\#]/) {
956 my $line = shift(@line);
957 print $line, "\n";
958 next unless $line =~ /^\#\s*((if)(?:n?def)?|elsif|else|endif)\b/;
959 my $statement = $+;
960 if ($statement eq 'if') {
961 $XSS_work_idx = @XSStack;
962 push(@XSStack, {type => 'if'});
963 } else {
964 death ("Error: `$statement' with no matching `if'")
965 if $XSStack[-1]{type} ne 'if';
966 if ($XSStack[-1]{varname}) {
967 push(@InitFileCode, "#endif\n");
968 push(@BootCode, "#endif");
969 }
970
971 my(@fns) = keys %{$XSStack[-1]{functions}};
972 if ($statement ne 'endif') {
973 # Hide the functions defined in other #if branches, and reset.
974 @{$XSStack[-1]{other_functions}}{@fns} = (1) x @fns;
975 @{$XSStack[-1]}{qw(varname functions)} = ('', {});
976 } else {
977 my($tmp) = pop(@XSStack);
978 0 while (--$XSS_work_idx
979 && $XSStack[$XSS_work_idx]{type} ne 'if');
980 # Keep all new defined functions
981 push(@fns, keys %{$tmp->{other_functions}});
982 @{$XSStack[$XSS_work_idx]{functions}}{@fns} = (1) x @fns;
983 }
984 }
985 }
e50aee73
AD
986
987 next PARAGRAPH unless @line;
988
4230ab3f
PP
989 if ($XSS_work_idx && !$XSStack[$XSS_work_idx]{varname}) {
990 # We are inside an #if, but have not yet #defined its xsubpp variable.
991 print "#define $cpp_next_tmp 1\n\n";
992 push(@InitFileCode, "#if $cpp_next_tmp\n");
993 push(@BootCode, "#if $cpp_next_tmp");
994 $XSStack[$XSS_work_idx]{varname} = $cpp_next_tmp++;
995 }
996
55497cff
PP
997 death ("Code is not inside a function"
998 ." (maybe last function was ended by a blank line "
6d087280 999 ." followed by a statement on column one?)")
e50aee73
AD
1000 if $line[0] =~ /^\s/;
1001
2304df62
AD
1002 # initialize info arrays
1003 undef(%args_match);
1004 undef(%var_types);
2304df62
AD
1005 undef(%defaults);
1006 undef($class);
1007 undef($static);
1008 undef($elipsis);
f06db76b 1009 undef($wantRETVAL) ;
f8b8e0a4 1010 undef($RETVAL_no_return) ;
f06db76b 1011 undef(%arg_list) ;
382b8d97 1012 undef(@proto_arg) ;
f8b8e0a4
GS
1013 undef(@arg_with_types) ;
1014 undef($processing_arg_with_types) ;
1015 undef(%arg_types) ;
0f568861 1016 undef(@outlist) ;
f8b8e0a4 1017 undef(%in_out) ;
c07a80fd 1018 undef($proto_in_this_xsub) ;
db3b9414 1019 undef($scope_in_this_xsub) ;
cfc02341 1020 undef($interface);
f8b8e0a4 1021 undef($prepush_done);
cfc02341
IZ
1022 $interface_macro = 'XSINTERFACE_FUNC' ;
1023 $interface_macro_set = 'XSINTERFACE_FUNC_SET' ;
382b8d97 1024 $ProtoThisXSUB = $WantPrototypes ;
db3b9414 1025 $ScopeThisXSUB = 0;
f8b8e0a4 1026 $xsreturn = 0;
2304df62 1027
8e07c86e 1028 $_ = shift(@line);
8fc38fda
PP
1029 while ($kwd = check_keyword("REQUIRE|PROTOTYPES|VERSIONCHECK|INCLUDE")) {
1030 &{"${kwd}_handler"}() ;
8e07c86e
AD
1031 next PARAGRAPH unless @line ;
1032 $_ = shift(@line);
1033 }
c2960299 1034
8e07c86e
AD
1035 if (check_keyword("BOOT")) {
1036 &check_cpp;
6f1abe2b
JT
1037 push (@BootCode, "#line $line_no[@line_no - @line] \"$filename\"")
1038 if $WantLineNumbers && $line[0] !~ /^\s*#\s*line\b/;
1039 push (@BootCode, @line, "") ;
c2960299 1040 next PARAGRAPH ;
a0d0e21e 1041 }
c2960299 1042
8e07c86e
AD
1043
1044 # extract return type, function name and arguments
cfc02341 1045 ($ret_type) = TidyType($_);
f8b8e0a4 1046 $RETVAL_no_return = 1 if $ret_type =~ s/^NO_OUTPUT\s+//;
8e07c86e 1047
11416672
GS
1048 # Allow one-line ANSI-like declaration
1049 unshift @line, $2
1050 if $process_argtypes
1051 and $ret_type =~ s/^(.*?\w.*?)\s*\b(\w+\s*\(.*)/$1/s;
1052
c2960299
AD
1053 # a function definition needs at least 2 lines
1054 blurt ("Error: Function definition too short '$ret_type'"), next PARAGRAPH
1055 unless @line ;
1056
8e07c86e
AD
1057 $static = 1 if $ret_type =~ s/^static\s+//;
1058
2304df62 1059 $func_header = shift(@line);
c2960299 1060 blurt ("Error: Cannot parse function definition from '$func_header'"), next PARAGRAPH
f8b8e0a4 1061 unless $func_header =~ /^(?:([\w:]*)::)?(\w+)\s*\(\s*(.*?)\s*\)\s*(const)?\s*(;\s*)?$/s;
c2960299 1062
8e07c86e 1063 ($class, $func_name, $orig_args) = ($1, $2, $3) ;
f480b56a 1064 $class = "$4 $class" if $4;
2304df62 1065 ($pname = $func_name) =~ s/^($Prefix)?/$Packprefix/;
ff68c719
PP
1066 ($clean_func_name = $func_name) =~ s/^$Prefix//;
1067 $Full_func_name = "${Packid}_$clean_func_name";
ff0cee69 1068 if ($Is_VMS) { $Full_func_name = $SymSet->addsym($Full_func_name); }
c2960299
AD
1069
1070 # Check for duplicate function definition
4230ab3f
PP
1071 for $tmp (@XSStack) {
1072 next unless defined $tmp->{functions}{$Full_func_name};
ff68c719 1073 Warn("Warning: duplicate function definition '$clean_func_name' detected");
4230ab3f 1074 last;
8e07c86e 1075 }
4230ab3f 1076 $XSStack[$XSS_work_idx]{functions}{$Full_func_name} ++ ;
be3174d2 1077 %XsubAliases = %XsubAliasValues = %Interfaces = @Attributes = ();
ef50df4b 1078 $DoSetMagic = 1;
c2960299 1079
f8b8e0a4
GS
1080 $orig_args =~ s/\\\s*/ /g; # process line continuations
1081
cb79badd 1082 my %only_outlist;
f8b8e0a4
GS
1083 if ($process_argtypes and $orig_args =~ /\S/) {
1084 my $args = "$orig_args ,";
14455d6c
GS
1085 if ($args =~ /^( (??{ $C_arg }) , )* $ /x) {
1086 @args = ($args =~ /\G ( (??{ $C_arg }) ) , /xg);
f8b8e0a4
GS
1087 for ( @args ) {
1088 s/^\s+//;
1089 s/\s+$//;
1090 my $arg = $_;
1091 my $default;
1092 ($arg, $default) = / ( [^=]* ) ( (?: = .* )? ) /x;
1093 my ($pre, $name) = ($arg =~ /(.*?) \s* \b(\w+) \s* $ /x);
1094 next unless length $pre;
1095 my $out_type;
1096 my $inout_var;
0f568861 1097 if ($process_inout and s/^(IN|IN_OUTLIST|OUTLIST|OUT|IN_OUT)\s+//) {
f8b8e0a4 1098 my $type = $1;
63385af5 1099 $out_type = $type if $type ne 'IN';
0f568861 1100 $arg =~ s/^(IN|IN_OUTLIST|OUTLIST|OUT|IN_OUT)\s+//;
f8b8e0a4
GS
1101 }
1102 if (/\W/) { # Has a type
1103 push @arg_with_types, $arg;
1104 # warn "pushing '$arg'\n";
1105 $arg_types{$name} = $arg;
1106 $_ = "$name$default";
1107 }
cb79badd 1108 $only_outlist{$_} = 1 if $out_type eq "OUTLIST";
0f568861 1109 push @outlist, $name if $out_type =~ /OUTLIST$/;
f8b8e0a4
GS
1110 $in_out{$name} = $out_type if $out_type;
1111 }
1112 } else {
1113 @args = split(/\s*,\s*/, $orig_args);
1114 Warn("Warning: cannot parse argument list '$orig_args', fallback to split");
1115 }
1116 } else {
1117 @args = split(/\s*,\s*/, $orig_args);
1118 for (@args) {
0f568861 1119 if ($process_inout and s/^(IN|IN_OUTLIST|OUTLIST|IN_OUT|OUT)\s+//) {
f8b8e0a4 1120 my $out_type = $1;
63385af5 1121 next if $out_type eq 'IN';
cb79badd 1122 $only_outlist{$_} = 1 if $out_type eq "OUTLIST";
0f568861 1123 push @outlist, $name if $out_type =~ /OUTLIST$/;
f8b8e0a4
GS
1124 $in_out{$_} = $out_type;
1125 }
1126 }
1127 }
a0d0e21e 1128 if (defined($class)) {
683d4eee
JL
1129 my $arg0 = ((defined($static) or $func_name eq 'new')
1130 ? "CLASS" : "THIS");
8e07c86e 1131 unshift(@args, $arg0);
f8b8e0a4 1132 ($report_args = "$arg0, $report_args") =~ s/^\w+, $/$arg0/;
2304df62 1133 }
f8b8e0a4
GS
1134 my $extra_args = 0;
1135 @args_num = ();
1136 $num_args = 0;
1137 my $report_args = '';
1138 foreach $i (0 .. $#args) {
2304df62
AD
1139 if ($args[$i] =~ s/\.\.\.//) {
1140 $elipsis = 1;
f8b8e0a4
GS
1141 if ($args[$i] eq '' && $i == $#args) {
1142 $report_args .= ", ...";
2304df62
AD
1143 pop(@args);
1144 last;
1145 }
1146 }
cb79badd 1147 if ($only_outlist{$args[$i]}) {
f8b8e0a4
GS
1148 push @args_num, undef;
1149 } else {
1150 push @args_num, ++$num_args;
1151 $report_args .= ", $args[$i]";
1152 }
8e07c86e 1153 if ($args[$i] =~ /^([^=]*[^\s=])\s*=\s*(.*)/s) {
f8b8e0a4 1154 $extra_args++;
2304df62
AD
1155 $args[$i] = $1;
1156 $defaults{$args[$i]} = $2;
1157 $defaults{$args[$i]} =~ s/"/\\"/g;
1158 }
93d3b392 1159 $proto_arg[$i+1] = "\$" ;
2304df62 1160 }
f8b8e0a4
GS
1161 $min_args = $num_args - $extra_args;
1162 $report_args =~ s/"/\\"/g;
1163 $report_args =~ s/^,\s+//;
1164 my @func_args = @args;
1165 shift @func_args if defined($class);
1166
1167 for (@func_args) {
1168 s/^/&/ if $in_out{$_};
2304df62 1169 }
f8b8e0a4
GS
1170 $func_args = join(", ", @func_args);
1171 @args_match{@args} = @args_num;
2304df62 1172
8e07c86e 1173 $PPCODE = grep(/^\s*PPCODE\s*:/, @line);
93d3b392 1174 $CODE = grep(/^\s*CODE\s*:/, @line);
6c5fb52b
TB
1175 # Detect CODE: blocks which use ST(n)= or XST_m*(n,v)
1176 # to set explicit return values.
1177 $EXPLICIT_RETURN = ($CODE &&
1178 ("@line" =~ /(\bST\s*\([^;]*=) | (\bXST_m\w+\s*\()/x ));
8e07c86e 1179 $ALIAS = grep(/^\s*ALIAS\s*:/, @line);
cfc02341 1180 $INTERFACE = grep(/^\s*INTERFACE\s*:/, @line);
8e07c86e 1181
f8b8e0a4
GS
1182 $xsreturn = 1 if $EXPLICIT_RETURN;
1183
2304df62 1184 # print function header
a0d0e21e 1185 print Q<<"EOF";
05ceb97a 1186#XS(XS_${Full_func_name}); /* prototype to pass -Wmissing-prototypes */
ff68c719 1187#XS(XS_${Full_func_name})
2304df62 1188#[[
a0d0e21e 1189# dXSARGS;
93a17b20 1190EOF
8e07c86e
AD
1191 print Q<<"EOF" if $ALIAS ;
1192# dXSI32;
1193EOF
cfc02341
IZ
1194 print Q<<"EOF" if $INTERFACE ;
1195# dXSFUNCTION($ret_type);
1196EOF
2304df62 1197 if ($elipsis) {
8e07c86e 1198 $cond = ($min_args ? qq(items < $min_args) : 0);
2304df62
AD
1199 }
1200 elsif ($min_args == $num_args) {
1201 $cond = qq(items != $min_args);
1202 }
1203 else {
1204 $cond = qq(items < $min_args || items > $num_args);
1205 }
8990e307 1206
2304df62
AD
1207 print Q<<"EOF" if $except;
1208# char errbuf[1024];
1209# *errbuf = '\0';
1210EOF
1211
8e07c86e
AD
1212 if ($ALIAS)
1213 { print Q<<"EOF" if $cond }
1214# if ($cond)
f8b8e0a4 1215# Perl_croak(aTHX_ "Usage: %s($report_args)", GvNAME(CvGV(cv)));
8e07c86e
AD
1216EOF
1217 else
1218 { print Q<<"EOF" if $cond }
1219# if ($cond)
f8b8e0a4 1220# Perl_croak(aTHX_ "Usage: $pname($report_args)");
93a17b20
LW
1221EOF
1222
c6c619a9
DM
1223 #-Wall: if an xsub has no arguments and PPCODE is used
1224 #none of ST, XSRETURN or XSprePUSH macros are used
1225 #hence `ax' (setup by dXSARGS) is unused
1226 print Q<<"EOF" if $PPCODE and $num_args == 0;
1227# if (0) ax = ax; /* -Wall */
1228EOF
1229
a0d0e21e
LW
1230 print Q<<"EOF" if $PPCODE;
1231# SP -= items;
1232EOF
1233
2304df62 1234 # Now do a block of some sort.
93a17b20 1235
2304df62 1236 $condnum = 0;
8e07c86e
AD
1237 $cond = ''; # last CASE: condidional
1238 push(@line, "$END:");
1239 push(@line_no, $line_no[-1]);
1240 $_ = '';
1241 &check_cpp;
2304df62 1242 while (@line) {
8e07c86e
AD
1243 &CASE_handler if check_keyword("CASE");
1244 print Q<<"EOF";
1245# $except [[
93a17b20
LW
1246EOF
1247
1248 # do initialization of input variables
1249 $thisdone = 0;
1250 $retvaldone = 0;
463ee0b2 1251 $deferred = "";
c2960299
AD
1252 %arg_list = () ;
1253 $gotRETVAL = 0;
f06db76b 1254
8fc38fda 1255 INPUT_handler() ;
be3174d2 1256 process_keyword("INPUT|PREINIT|INTERFACE_MACRO|C_ARGS|ALIAS|ATTRS|PROTOTYPE|SCOPE") ;
8fc38fda 1257
db3b9414
PP
1258 print Q<<"EOF" if $ScopeThisXSUB;
1259# ENTER;
1260# [[
1261EOF
1262
a0d0e21e 1263 if (!$thisdone && defined($class)) {
683d4eee 1264 if (defined($static) or $func_name eq 'new') {
a0d0e21e
LW
1265 print "\tchar *";
1266 $var_types{"CLASS"} = "char *";
1267 &generate_init("char *", 1, "CLASS");
1268 }
1269 else {
93a17b20
LW
1270 print "\t$class *";
1271 $var_types{"THIS"} = "$class *";
1272 &generate_init("$class *", 1, "THIS");
a0d0e21e 1273 }
93a17b20
LW
1274 }
1275
1276 # do code
1277 if (/^\s*NOT_IMPLEMENTED_YET/) {
cea2e8a9 1278 print "\n\tPerl_croak(aTHX_ \"$pname: not implemented yet\");\n";
4633a7c4 1279 $_ = '' ;
93a17b20
LW
1280 } else {
1281 if ($ret_type ne "void") {
ddf6bed1 1282 print "\t" . &map_type($ret_type, 'RETVAL') . ";\n"
93a17b20
LW
1283 if !$retvaldone;
1284 $args_match{"RETVAL"} = 0;
1285 $var_types{"RETVAL"} = $ret_type;
b26a54d0
GS
1286 print "\tdXSTARG;\n"
1287 if $WantOptimize and $targetable{$type_kind{$ret_type}};
93a17b20 1288 }
db3b9414 1289
f8b8e0a4
GS
1290 if (@arg_with_types) {
1291 unshift @line, @arg_with_types, $_;
1292 $_ = "";
1293 $processing_arg_with_types = 1;
1294 INPUT_handler() ;
1295 }
8e07c86e 1296 print $deferred;
db3b9414 1297
be3174d2 1298 process_keyword("INIT|ALIAS|ATTRS|PROTOTYPE|INTERFACE_MACRO|INTERFACE|C_ARGS") ;
8e07c86e
AD
1299
1300 if (check_keyword("PPCODE")) {
8fc38fda 1301 print_section();
8e07c86e 1302 death ("PPCODE must be last thing") if @line;
db3b9414 1303 print "\tLEAVE;\n" if $ScopeThisXSUB;
a0d0e21e 1304 print "\tPUTBACK;\n\treturn;\n";
8e07c86e 1305 } elsif (check_keyword("CODE")) {
8fc38fda
PP
1306 print_section() ;
1307 } elsif (defined($class) and $func_name eq "DESTROY") {
a0d0e21e 1308 print "\n\t";
8e07c86e 1309 print "delete THIS;\n";
93a17b20
LW
1310 } else {
1311 print "\n\t";
1312 if ($ret_type ne "void") {
463ee0b2 1313 print "RETVAL = ";
e50aee73 1314 $wantRETVAL = 1;
93a17b20
LW
1315 }
1316 if (defined($static)) {
683d4eee 1317 if ($func_name eq 'new') {
8fc38fda 1318 $func_name = "$class";
8e07c86e
AD
1319 } else {
1320 print "${class}::";
a0d0e21e 1321 }
93a17b20 1322 } elsif (defined($class)) {
683d4eee 1323 if ($func_name eq 'new') {
8fc38fda
PP
1324 $func_name .= " $class";
1325 } else {
93a17b20 1326 print "THIS->";
8fc38fda 1327 }
93a17b20 1328 }
e50aee73
AD
1329 $func_name =~ s/^($spat)//
1330 if defined($spat);
cfc02341 1331 $func_name = 'XSFUNCTION' if $interface;
93a17b20 1332 print "$func_name($func_args);\n";
93a17b20
LW
1333 }
1334 }
1335
1336 # do output variables
f8b8e0a4
GS
1337 $gotRETVAL = 0; # 1 if RETVAL seen in OUTPUT section;
1338 undef $RETVAL_code ; # code to set RETVAL (from OUTPUT section);
1339 # $wantRETVAL set if 'RETVAL =' autogenerated
1340 ($wantRETVAL, $ret_type) = (0, 'void') if $RETVAL_no_return;
8e07c86e 1341 undef %outargs ;
be3174d2 1342 process_keyword("POSTCALL|OUTPUT|ALIAS|ATTRS|PROTOTYPE");
f06db76b 1343
0f568861
IZ
1344 &generate_output($var_types{$_}, $args_match{$_}, $_, $DoSetMagic)
1345 for grep $in_out{$_} =~ /OUT$/, keys %in_out;
1346
f06db76b 1347 # all OUTPUT done, so now push the return value on the stack
8e07c86e
AD
1348 if ($gotRETVAL && $RETVAL_code) {
1349 print "\t$RETVAL_code\n";
1350 } elsif ($gotRETVAL || $wantRETVAL) {
b26a54d0
GS
1351 my $t = $WantOptimize && $targetable{$type_kind{$ret_type}};
1352 my $var = 'RETVAL';
1353 my $type = $ret_type;
1354
1355 # 0: type, 1: with_size, 2: how, 3: how_size
1356 if ($t and not $t->[1] and $t->[0] eq 'p') {
1357 # PUSHp corresponds to setpvn. Treate setpv directly
1358 my $what = eval qq("$t->[2]");
1359 warn $@ if $@;
1360
1361 print "\tsv_setpv(TARG, $what); XSprePUSH; PUSHTARG;\n";
f8b8e0a4 1362 $prepush_done = 1;
b26a54d0
GS
1363 }
1364 elsif ($t) {
1365 my $what = eval qq("$t->[2]");
1366 warn $@ if $@;
1367
1368 my $size = $t->[3];
1369 $size = '' unless defined $size;
1370 $size = eval qq("$size");
1371 warn $@ if $@;
1372 print "\tXSprePUSH; PUSH$t->[0]($what$size);\n";
f8b8e0a4 1373 $prepush_done = 1;
b26a54d0
GS
1374 }
1375 else {
1376 # RETVAL almost never needs SvSETMAGIC()
1377 &generate_output($ret_type, 0, 'RETVAL', 0);
1378 }
8e07c86e 1379 }
f06db76b 1380
f8b8e0a4
GS
1381 $xsreturn = 1 if $ret_type ne "void";
1382 my $num = $xsreturn;
0f568861 1383 my $c = @outlist;
f8b8e0a4
GS
1384 print "\tXSprePUSH;" if $c and not $prepush_done;
1385 print "\tEXTEND(SP,$c);\n" if $c;
1386 $xsreturn += $c;
0f568861 1387 generate_output($var_types{$_}, $num++, $_, 0, 1) for @outlist;
f8b8e0a4 1388
93a17b20 1389 # do cleanup
be3174d2 1390 process_keyword("CLEANUP|ALIAS|ATTRS|PROTOTYPE") ;
8e07c86e 1391
db3b9414
PP
1392 print Q<<"EOF" if $ScopeThisXSUB;
1393# ]]
1394EOF
1395 print Q<<"EOF" if $ScopeThisXSUB and not $PPCODE;
1396# LEAVE;
1397EOF
1398
93a17b20 1399 # print function trailer
8e07c86e 1400 print Q<<EOF;
2304df62 1401# ]]
8e07c86e
AD
1402EOF
1403 print Q<<EOF if $except;
8990e307
LW
1404# BEGHANDLERS
1405# CATCHALL
1406# sprintf(errbuf, "%s: %s\\tpropagated", Xname, Xreason);
1407# ENDHANDLERS
93a17b20 1408EOF
8e07c86e
AD
1409 if (check_keyword("CASE")) {
1410 blurt ("Error: No `CASE:' at top of function")
1411 unless $condnum;
1412 $_ = "CASE: $_"; # Restore CASE: label
1413 next;
8990e307 1414 }
8e07c86e
AD
1415 last if $_ eq "$END:";
1416 death(/^$BLOCK_re/o ? "Misplaced `$1:'" : "Junk at end of function");
2304df62 1417 }
a0d0e21e 1418
2304df62
AD
1419 print Q<<EOF if $except;
1420# if (errbuf[0])
cea2e8a9 1421# Perl_croak(aTHX_ errbuf);
2304df62 1422EOF
a0d0e21e 1423
f8b8e0a4 1424 if ($xsreturn) {
93d3b392 1425 print Q<<EOF unless $PPCODE;
f8b8e0a4 1426# XSRETURN($xsreturn);
a0d0e21e 1427EOF
93d3b392
PP
1428 } else {
1429 print Q<<EOF unless $PPCODE;
1430# XSRETURN_EMPTY;
1431EOF
1432 }
a0d0e21e 1433
2304df62 1434 print Q<<EOF;
2304df62 1435#]]
8990e307 1436#
93a17b20 1437EOF
382b8d97 1438
4230ab3f
PP
1439 my $newXS = "newXS" ;
1440 my $proto = "" ;
1441
382b8d97
PM
1442 # Build the prototype string for the xsub
1443 if ($ProtoThisXSUB) {
4230ab3f
PP
1444 $newXS = "newXSproto";
1445
6f1abe2b 1446 if ($ProtoThisXSUB eq 2) {
4230ab3f
PP
1447 # User has specified empty prototype
1448 $proto = ', ""' ;
1449 }
6f1abe2b 1450 elsif ($ProtoThisXSUB ne 1) {
7d41bd0a 1451 # User has specified a prototype
4230ab3f 1452 $proto = ', "' . $ProtoThisXSUB . '"';
382b8d97
PM
1453 }
1454 else {
1455 my $s = ';';
1456 if ($min_args < $num_args) {
1457 $s = '';
1458 $proto_arg[$min_args] .= ";" ;
1459 }
4230ab3f 1460 push @proto_arg, "$s\@"
382b8d97
PM
1461 if $elipsis ;
1462
4230ab3f 1463 $proto = ', "' . join ("", @proto_arg) . '"';
382b8d97
PM
1464 }
1465 }
1466
4230ab3f
PP
1467 if (%XsubAliases) {
1468 $XsubAliases{$pname} = 0
1469 unless defined $XsubAliases{$pname} ;
1470 while ( ($name, $value) = each %XsubAliases) {
1471 push(@InitFileCode, Q<<"EOF");
1472# cv = newXS(\"$name\", XS_$Full_func_name, file);
1473# XSANY.any_i32 = $value ;
1474EOF
1475 push(@InitFileCode, Q<<"EOF") if $proto;
1476# sv_setpv((SV*)cv$proto) ;
1477EOF
1478 }
cfc02341 1479 }
be3174d2
GS
1480 elsif (@Attributes) {
1481 push(@InitFileCode, Q<<"EOF");
1482# cv = newXS(\"$pname\", XS_$Full_func_name, file);
1483# apply_attrs_string("$Package", cv, "@Attributes", 0);
1484EOF
1485 }
cfc02341
IZ
1486 elsif ($interface) {
1487 while ( ($name, $value) = each %Interfaces) {
1488 $name = "$Package\::$name" unless $name =~ /::/;
1489 push(@InitFileCode, Q<<"EOF");
1490# cv = newXS(\"$name\", XS_$Full_func_name, file);
1491# $interface_macro_set(cv,$value) ;
1492EOF
1493 push(@InitFileCode, Q<<"EOF") if $proto;
1494# sv_setpv((SV*)cv$proto) ;
1495EOF
1496 }
4230ab3f
PP
1497 }
1498 else {
1499 push(@InitFileCode,
1500 " ${newXS}(\"$pname\", XS_$Full_func_name, file$proto);\n");
1501 }
93a17b20
LW
1502}
1503
1504# print initialization routine
7ee8c957 1505
e3b8966e 1506print Q<<"EOF";
e3b8966e
GS
1507##ifdef __cplusplus
1508#extern "C"
1509##endif
7ee8c957
GS
1510EOF
1511
8990e307 1512print Q<<"EOF";
05ceb97a 1513#XS(boot_$Module_cname); /* prototype to pass -Wmissing-prototypes */
a0d0e21e 1514#XS(boot_$Module_cname)
7ee8c957
GS
1515EOF
1516
7ee8c957 1517print Q<<"EOF";
2304df62 1518#[[
a0d0e21e 1519# dXSARGS;
c6c619a9
DM
1520EOF
1521
1522#-Wall: if there is no $Full_func_name there are no xsubs in this .xs
1523#so `file' is unused
1524print Q<<"EOF" if $Full_func_name;
8990e307 1525# char* file = __FILE__;
93a17b20
LW
1526EOF
1527
c6c619a9
DM
1528print Q "#\n";
1529
8fc38fda
PP
1530print Q<<"EOF" if $WantVersionChk ;
1531# XS_VERSION_BOOTCHECK ;
1532#
1533EOF
1534
cfc02341 1535print Q<<"EOF" if defined $XsubAliases or defined $Interfaces ;
8e07c86e
AD
1536# {
1537# CV * cv ;
1538#
1539EOF
1540
4230ab3f 1541print @InitFileCode;
a0d0e21e 1542
cfc02341 1543print Q<<"EOF" if defined $XsubAliases or defined $Interfaces ;
8e07c86e
AD
1544# }
1545EOF
1546
a0d0e21e
LW
1547if (@BootCode)
1548{
6f1abe2b
JT
1549 print "\n /* Initialisation Section */\n\n" ;
1550 @line = @BootCode;
1551 print_section();
8e07c86e 1552 print "\n /* End of Initialisation Section */\n\n" ;
93a17b20 1553}
a0d0e21e 1554
e50aee73 1555print Q<<"EOF";;
3280af22 1556# XSRETURN_YES;
e50aee73 1557#]]
e3b8966e
GS
1558#
1559EOF
1560
8fc38fda
PP
1561warn("Please specify prototyping behavior for $filename (see perlxs manual)\n")
1562 unless $ProtoUsed ;
e50aee73
AD
1563&Exit;
1564
93a17b20 1565sub output_init {
ddf6bed1 1566 local($type, $num, $var, $init, $name_printed) = @_;
a0d0e21e 1567 local($arg) = "ST(" . ($num - 1) . ")";
93a17b20 1568
7ad6fb0b 1569 if( $init =~ /^=/ ) {
ddf6bed1
IZ
1570 if ($name_printed) {
1571 eval qq/print " $init\\n"/;
1572 } else {
1573 eval qq/print "\\t$var $init\\n"/;
1574 }
7ad6fb0b
TM
1575 warn $@ if $@;
1576 } else {
1577 if( $init =~ s/^\+// && $num ) {
ddf6bed1
IZ
1578 &generate_init($type, $num, $var, $name_printed);
1579 } elsif ($name_printed) {
1580 print ";\n";
1581 $init =~ s/^;//;
7ad6fb0b
TM
1582 } else {
1583 eval qq/print "\\t$var;\\n"/;
1584 warn $@ if $@;
1585 $init =~ s/^;//;
1586 }
1587 $deferred .= eval qq/"\\n\\t$init\\n"/;
1588 warn $@ if $@;
1589 }
93a17b20
LW
1590}
1591
c2960299
AD
1592sub Warn
1593{
1594 # work out the line number
1595 my $line_no = $line_no[@line_no - @line -1] ;
1596
1597 print STDERR "@_ in $filename, line $line_no\n" ;
1598}
1599
1600sub blurt
1601{
1602 Warn @_ ;
1603 $errors ++
1604}
1605
1606sub death
1607{
1608 Warn @_ ;
1609 exit 1 ;
1610}
8990e307 1611
93a17b20 1612sub generate_init {
2304df62 1613 local($type, $num, $var) = @_;
a0d0e21e 1614 local($arg) = "ST(" . ($num - 1) . ")";
2304df62
AD
1615 local($argoff) = $num - 1;
1616 local($ntype);
1617 local($tk);
93a17b20 1618
f06db76b 1619 $type = TidyType($type) ;
c2960299
AD
1620 blurt("Error: '$type' not in typemap"), return
1621 unless defined($type_kind{$type});
1622
2304df62 1623 ($ntype = $type) =~ s/\s*\*/Ptr/g;
8e07c86e 1624 ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//;
2304df62
AD
1625 $tk = $type_kind{$type};
1626 $tk =~ s/OBJ$/REF/ if $func_name =~ /DESTROY$/;
8e07c86e 1627 $type =~ tr/:/_/;
615ca1f4 1628 blurt("Error: No INPUT definition for type '$type', typekind '$type_kind{$type}' found"), return
c2960299 1629 unless defined $input_expr{$tk} ;
2304df62
AD
1630 $expr = $input_expr{$tk};
1631 if ($expr =~ /DO_ARRAY_ELEM/) {
c2960299
AD
1632 blurt("Error: '$subtype' not in typemap"), return
1633 unless defined($type_kind{$subtype});
615ca1f4 1634 blurt("Error: No INPUT definition for type '$subtype', typekind '$type_kind{$subtype}' found"), return
c2960299 1635 unless defined $input_expr{$type_kind{$subtype}} ;
2304df62 1636 $subexpr = $input_expr{$type_kind{$subtype}};
f8c11764 1637 $subexpr =~ s/\$type/\$subtype/g;
2304df62
AD
1638 $subexpr =~ s/ntype/subtype/g;
1639 $subexpr =~ s/\$arg/ST(ix_$var)/g;
1640 $subexpr =~ s/\n\t/\n\t\t/g;
93d3b392 1641 $subexpr =~ s/is not of (.*\")/[arg %d] is not of $1, ix_$var + 1/g;
a0d0e21e 1642 $subexpr =~ s/\$var/${var}[ix_$var - $argoff]/;
2304df62
AD
1643 $expr =~ s/DO_ARRAY_ELEM/$subexpr/;
1644 }
db3b9414
PP
1645 if ($expr =~ m#/\*.*scope.*\*/#i) { # "scope" in C comments
1646 $ScopeThisXSUB = 1;
1647 }
2304df62
AD
1648 if (defined($defaults{$var})) {
1649 $expr =~ s/(\t+)/$1 /g;
1650 $expr =~ s/ /\t/g;
ddf6bed1
IZ
1651 if ($name_printed) {
1652 print ";\n";
1653 } else {
1654 eval qq/print "\\t$var;\\n"/;
1655 warn $@ if $@;
1656 }
a104f515 1657 if ($defaults{$var} eq 'NO_INIT') {
4628e4f8
GS
1658 $deferred .= eval qq/"\\n\\tif (items >= $num) {\\n$expr;\\n\\t}\\n"/;
1659 } else {
1660 $deferred .= eval qq/"\\n\\tif (items < $num)\\n\\t $var = $defaults{$var};\\n\\telse {\\n$expr;\\n\\t}\\n"/;
1661 }
7ad6fb0b 1662 warn $@ if $@;
db3b9414 1663 } elsif ($ScopeThisXSUB or $expr !~ /^\t\$var =/) {
ddf6bed1
IZ
1664 if ($name_printed) {
1665 print ";\n";
1666 } else {
1667 eval qq/print "\\t$var;\\n"/;
1668 warn $@ if $@;
1669 }
2304df62 1670 $deferred .= eval qq/"\\n$expr;\\n"/;
7ad6fb0b 1671 warn $@ if $@;
2304df62 1672 } else {
ddf6bed1
IZ
1673 die "panic: do not know how to handle this branch for function pointers"
1674 if $name_printed;
2304df62 1675 eval qq/print "$expr;\\n"/;
7ad6fb0b 1676 warn $@ if $@;
2304df62 1677 }
93a17b20
LW
1678}
1679
1680sub generate_output {
f8b8e0a4 1681 local($type, $num, $var, $do_setmagic, $do_push) = @_;
a0d0e21e 1682 local($arg) = "ST(" . ($num - ($num != 0)) . ")";
2304df62
AD
1683 local($argoff) = $num - 1;
1684 local($ntype);
93a17b20 1685
f06db76b 1686 $type = TidyType($type) ;
2304df62 1687 if ($type =~ /^array\(([^,]*),(.*)\)/) {
f8c11764 1688 print "\t$arg = sv_newmortal();\n";
4bd3d083 1689 print "\tsv_setpvn($arg, (char *)$var, $2 * sizeof($1));\n";
ef50df4b 1690 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
2304df62 1691 } else {
f06db76b 1692 blurt("Error: '$type' not in typemap"), return
2304df62 1693 unless defined($type_kind{$type});
615ca1f4 1694 blurt("Error: No OUTPUT definition for type '$type', typekind '$type_kind{$type}' found"), return
c2960299 1695 unless defined $output_expr{$type_kind{$type}} ;
2304df62
AD
1696 ($ntype = $type) =~ s/\s*\*/Ptr/g;
1697 $ntype =~ s/\(\)//g;
8e07c86e 1698 ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//;
2304df62
AD
1699 $expr = $output_expr{$type_kind{$type}};
1700 if ($expr =~ /DO_ARRAY_ELEM/) {
c2960299
AD
1701 blurt("Error: '$subtype' not in typemap"), return
1702 unless defined($type_kind{$subtype});
615ca1f4 1703 blurt("Error: No OUTPUT definition for type '$subtype', typekind '$type_kind{$subtype}' found"), return
c2960299 1704 unless defined $output_expr{$type_kind{$subtype}} ;
2304df62
AD
1705 $subexpr = $output_expr{$type_kind{$subtype}};
1706 $subexpr =~ s/ntype/subtype/g;
1707 $subexpr =~ s/\$arg/ST(ix_$var)/g;
1708 $subexpr =~ s/\$var/${var}[ix_$var]/g;
1709 $subexpr =~ s/\n\t/\n\t\t/g;
1710 $expr =~ s/DO_ARRAY_ELEM\n/$subexpr/;
a0d0e21e 1711 eval "print qq\a$expr\a";
7ad6fb0b 1712 warn $@ if $@;
ef50df4b 1713 print "\t\tSvSETMAGIC(ST(ix_$var));\n" if $do_setmagic;
2304df62 1714 }
a0d0e21e 1715 elsif ($var eq 'RETVAL') {
a2baab1c
IZ
1716 if ($expr =~ /^\t\$arg = new/) {
1717 # We expect that $arg has refcnt 1, so we need to
1718 # mortalize it.
a0d0e21e 1719 eval "print qq\a$expr\a";
7ad6fb0b 1720 warn $@ if $@;
f8b8e0a4
GS
1721 print "\tsv_2mortal(ST($num));\n";
1722 print "\tSvSETMAGIC(ST($num));\n" if $do_setmagic;
93a17b20 1723 }
a2baab1c
IZ
1724 elsif ($expr =~ /^\s*\$arg\s*=/) {
1725 # We expect that $arg has refcnt >=1, so we need
d689ffdd 1726 # to mortalize it!
a2baab1c 1727 eval "print qq\a$expr\a";
7ad6fb0b 1728 warn $@ if $@;
d689ffdd 1729 print "\tsv_2mortal(ST(0));\n";
ef50df4b 1730 print "\tSvSETMAGIC(ST(0));\n" if $do_setmagic;
a2baab1c 1731 }
2304df62 1732 else {
a2baab1c
IZ
1733 # Just hope that the entry would safely write it
1734 # over an already mortalized value. By
1735 # coincidence, something like $arg = &sv_undef
1736 # works too.
8990e307 1737 print "\tST(0) = sv_newmortal();\n";
a0d0e21e 1738 eval "print qq\a$expr\a";
7ad6fb0b 1739 warn $@ if $@;
ef50df4b 1740 # new mortals don't have set magic
463ee0b2 1741 }
2304df62 1742 }
f8b8e0a4
GS
1743 elsif ($do_push) {
1744 print "\tPUSHs(sv_newmortal());\n";
1745 $arg = "ST($num)";
1746 eval "print qq\a$expr\a";
1747 warn $@ if $@;
1748 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
1749 }
a0d0e21e
LW
1750 elsif ($arg =~ /^ST\(\d+\)$/) {
1751 eval "print qq\a$expr\a";
7ad6fb0b 1752 warn $@ if $@;
ef50df4b 1753 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
a0d0e21e 1754 }
2304df62 1755 }
93a17b20
LW
1756}
1757
1758sub map_type {
ddf6bed1 1759 my($type, $varname) = @_;
93a17b20 1760
8e07c86e
AD
1761 $type =~ tr/:/_/;
1762 $type =~ s/^array\(([^,]*),(.*)\).*/$1 */s;
ddf6bed1
IZ
1763 if ($varname) {
1764 if ($varname && $type =~ / \( \s* \* (?= \s* \) ) /xg) {
1765 (substr $type, pos $type, 0) = " $varname ";
1766 } else {
1767 $type .= "\t$varname";
1768 }
1769 }
8e07c86e 1770 $type;
93a17b20 1771}
8990e307 1772
e50aee73
AD
1773
1774sub Exit {
ff0cee69
PP
1775# If this is VMS, the exit status has meaning to the shell, so we
1776# use a predictable value (SS$_Normal or SS$_Abort) rather than an
1777# arbitrary number.
1778# exit ($Is_VMS ? ($errors ? 44 : 1) : $errors) ;
1779 exit ($errors ? 1 : 0);
e50aee73 1780}