This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
ignore const for the purposes of typemaps (from Hugo van der Sanden)
[perl5.git] / lib / ExtUtils / xsubpp
CommitLineData
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
c5be433b 73=back
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74
75=head1 ENVIRONMENT
76
77No environment variables are used.
78
79=head1 AUTHOR
80
81Larry Wall
82
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83=head1 MODIFICATION HISTORY
84
8e07c86e 85See the file F<changes.pod>.
e50aee73 86
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87=head1 SEE ALSO
88
55a00e51 89perl(1), perlxs(1), perlxstut(1)
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90
91=cut
93a17b20 92
382b8d97 93require 5.002;
774d564b 94use Cwd;
4230ab3f 95use vars '$cplusplus';
7ad6fb0b 96use vars '%v';
382b8d97 97
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98use Config;
99
aa689395
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100sub Q ;
101
774d564b 102# Global Constants
774d564b 103
cfc02341 104$XSUBPP_version = "1.9507";
aa689395
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105
106my ($Is_VMS, $SymSet);
107if ($^O eq 'VMS') {
108 $Is_VMS = 1;
109 # Establish set of global symbols with max length 28, since xsubpp
110 # will later add the 'XS_' prefix.
111 require ExtUtils::XSSymSet;
112 $SymSet = new ExtUtils::XSSymSet 28;
113}
8fc38fda 114
c07a80fd 115$FH = 'File0000' ;
8fc38fda 116
b26a54d0 117$usage = "Usage: xsubpp [-v] [-C++] [-except] [-prototypes] [-noversioncheck] [-nolinenumbers] [-nooptimize] [-s pattern] [-typemap typemap]... file.xs\n";
f06db76b 118
382b8d97 119$proto_re = "[" . quotemeta('\$%&*@;') . "]" ;
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120# mjn
121$OBJ = 1 if $Config{'ccflags'} =~ /PERL_OBJECT/i;
93a17b20 122
8e07c86e 123$except = "";
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124$WantPrototypes = -1 ;
125$WantVersionChk = 1 ;
126$ProtoUsed = 0 ;
6f1abe2b 127$WantLineNumbers = 1 ;
b26a54d0 128$WantOptimize = 1 ;
8e07c86e 129SWITCH: while (@ARGV and $ARGV[0] =~ /^-./) {
93a17b20 130 $flag = shift @ARGV;
e50aee73 131 $flag =~ s/^-// ;
ff68c719 132 $spat = quotemeta shift, next SWITCH if $flag eq 's';
8990e307 133 $cplusplus = 1, next SWITCH if $flag eq 'C++';
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134 $WantPrototypes = 0, next SWITCH if $flag eq 'noprototypes';
135 $WantPrototypes = 1, next SWITCH if $flag eq 'prototypes';
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136 $WantVersionChk = 0, next SWITCH if $flag eq 'noversioncheck';
137 $WantVersionChk = 1, next SWITCH if $flag eq 'versioncheck';
c5be433b 138 # XXX left this in for compat
b207eff1 139 $WantCAPI = 1, next SWITCH if $flag eq 'object_capi';
8e07c86e 140 $except = " TRY", next SWITCH if $flag eq 'except';
8990e307 141 push(@tm,shift), next SWITCH if $flag eq 'typemap';
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142 $WantLineNumbers = 0, next SWITCH if $flag eq 'nolinenumbers';
143 $WantLineNumbers = 1, next SWITCH if $flag eq 'linenumbers';
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144 $WantOptimize = 0, next SWITCH if $flag eq 'nooptimize';
145 $WantOptimize = 1, next SWITCH if $flag eq 'optimize';
146 (print "xsubpp version $XSUBPP_version\n"), exit
8e07c86e 147 if $flag eq 'v';
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148 die $usage;
149}
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150if ($WantPrototypes == -1)
151 { $WantPrototypes = 0}
152else
153 { $ProtoUsed = 1 }
154
155
8990e307 156@ARGV == 1 or die $usage;
c2960299 157($dir, $filename) = $ARGV[0] =~ m#(.*)/(.*)#
57497940 158 or ($dir, $filename) = $ARGV[0] =~ m#(.*)\\(.*)#
c2960299 159 or ($dir, $filename) = $ARGV[0] =~ m#(.*[>\]])(.*)#
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160 or ($dir, $filename) = ('.', $ARGV[0]);
161chdir($dir);
774d564b 162$pwd = cwd();
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163
164++ $IncludedFiles{$ARGV[0]} ;
93a17b20 165
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166my(@XSStack) = ({type => 'none'}); # Stack of conditionals and INCLUDEs
167my($XSS_work_idx, $cpp_next_tmp) = (0, "XSubPPtmpAAAA");
aa689395 168
4230ab3f 169
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170sub TrimWhitespace
171{
172 $_[0] =~ s/^\s+|\s+$//go ;
173}
174
175sub TidyType
176{
177 local ($_) = @_ ;
178
179 # rationalise any '*' by joining them into bunches and removing whitespace
180 s#\s*(\*+)\s*#$1#g;
e50aee73 181 s#(\*+)# $1 #g ;
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182
183 # change multiple whitespace into a single space
184 s/\s+/ /g ;
185
186 # trim leading & trailing whitespace
187 TrimWhitespace($_) ;
188
189 $_ ;
190}
191
93a17b20 192$typemap = shift @ARGV;
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193foreach $typemap (@tm) {
194 die "Can't find $typemap in $pwd\n" unless -r $typemap;
93a17b20 195}
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196unshift @tm, qw(../../../../lib/ExtUtils/typemap ../../../lib/ExtUtils/typemap
197 ../../lib/ExtUtils/typemap ../../../typemap ../../typemap
198 ../typemap typemap);
8990e307 199foreach $typemap (@tm) {
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200 next unless -e $typemap ;
201 # skip directories, binary files etc.
202 warn("Warning: ignoring non-text typemap file '$typemap'\n"), next
203 unless -T $typemap ;
204 open(TYPEMAP, $typemap)
205 or warn ("Warning: could not open typemap file '$typemap': $!\n"), next;
e50aee73 206 $mode = 'Typemap';
c2960299 207 $junk = "" ;
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208 $current = \$junk;
209 while (<TYPEMAP>) {
e50aee73 210 next if /^\s*#/;
e1f0c0aa 211 my $line_no = $. + 1;
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212 if (/^INPUT\s*$/) { $mode = 'Input'; $current = \$junk; next; }
213 if (/^OUTPUT\s*$/) { $mode = 'Output'; $current = \$junk; next; }
214 if (/^TYPEMAP\s*$/) { $mode = 'Typemap'; $current = \$junk; next; }
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215 if ($mode eq 'Typemap') {
216 chomp;
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217 my $line = $_ ;
218 TrimWhitespace($_) ;
219 # skip blank lines and comment lines
220 next if /^$/ or /^#/ ;
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221 my($type,$kind, $proto) = /^\s*(.*?\S)\s+(\S+)\s*($proto_re*)\s*$/ or
222 warn("Warning: File '$typemap' Line $. '$line' TYPEMAP entry needs 2 or 3 columns\n"), next;
223 $type = TidyType($type) ;
224 $type_kind{$type} = $kind ;
225 # prototype defaults to '$'
93d3b392 226 $proto = "\$" unless $proto ;
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227 warn("Warning: File '$typemap' Line $. '$line' Invalid prototype '$proto'\n")
228 unless ValidProtoString($proto) ;
229 $proto_letter{$type} = C_string($proto) ;
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230 }
231 elsif (/^\s/) {
232 $$current .= $_;
463ee0b2 233 }
e50aee73 234 elsif ($mode eq 'Input') {
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235 s/\s+$//;
236 $input_expr{$_} = '';
237 $current = \$input_expr{$_};
93a17b20 238 }
8990e307 239 else {
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240 s/\s+$//;
241 $output_expr{$_} = '';
242 $current = \$output_expr{$_};
93a17b20 243 }
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244 }
245 close(TYPEMAP);
246}
93a17b20 247
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248foreach $key (keys %input_expr) {
249 $input_expr{$key} =~ s/\n+$//;
250}
93a17b20 251
14455d6c 252$bal = qr[(?:(?>[^()]+)|\((??{ $bal })\))*]; # ()-balanced
b26a54d0 253$cast = qr[(?:\(\s*SV\s*\*\s*\)\s*)?]; # Optional (SV*) cast
14455d6c 254$size = qr[,\s* (??{ $bal }) ]x; # Third arg (to setpvn)
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255
256foreach $key (keys %output_expr) {
257 use re 'eval';
258
259 my ($t, $with_size, $arg, $sarg) =
260 ($output_expr{$key} =~
261 m[^ \s+ sv_set ( [iunp] ) v (n)? # Type, is_setpvn
262 \s* \( \s* $cast \$arg \s* ,
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263 \s* ( (??{ $bal }) ) # Set from
264 ( (??{ $size }) )? # Possible sizeof set-from
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265 \) \s* ; \s* $
266 ]x);
267 $targetable{$key} = [$t, $with_size, $arg, $sarg] if $t;
268}
269
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270$END = "!End!\n\n"; # "impossible" keyword (multiple newline)
271
272# Match an XS keyword
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273$BLOCK_re= '\s*(' . join('|', qw(
274 REQUIRE BOOT CASE PREINIT INPUT INIT CODE PPCODE OUTPUT
8fc38fda 275 CLEANUP ALIAS PROTOTYPES PROTOTYPE VERSIONCHECK INCLUDE
63385af5 276 SCOPE INTERFACE INTERFACE_MACRO C_ARGS POSTCALL
382b8d97 277 )) . "|$END)\\s*:";
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278
279# Input: ($_, @line) == unparsed input.
280# Output: ($_, @line) == (rest of line, following lines).
281# Return: the matched keyword if found, otherwise 0
282sub check_keyword {
283 $_ = shift(@line) while !/\S/ && @line;
284 s/^(\s*)($_[0])\s*:\s*(?:#.*)?/$1/s && $2;
285}
286
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287my ($C_group_rex, $C_arg);
288# Group in C (no support for comments or literals)
289$C_group_rex = qr/ [({\[]
14455d6c 290 (?: (?> [^()\[\]{}]+ ) | (??{ $C_group_rex }) )*
f8b8e0a4
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291 [)}\]] /x ;
292# Chunk in C without comma at toplevel (no comments):
293$C_arg = qr/ (?: (?> [^()\[\]{},"']+ )
14455d6c 294 | (??{ $C_group_rex })
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295 | " (?: (?> [^\\"]+ )
296 | \\.
297 )* " # String literal
298 | ' (?: (?> [^\\']+ ) | \\. )* ' # Char literal
299 )* /xs;
8e07c86e 300
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301if ($WantLineNumbers) {
302 {
303 package xsubpp::counter;
304 sub TIEHANDLE {
305 my ($class, $cfile) = @_;
306 my $buf = "";
307 $SECTION_END_MARKER = "#line --- \"$cfile\"";
308 $line_no = 1;
309 bless \$buf;
310 }
311
312 sub PRINT {
313 my $self = shift;
314 for (@_) {
315 $$self .= $_;
316 while ($$self =~ s/^([^\n]*\n)//) {
317 my $line = $1;
318 ++ $line_no;
319 $line =~ s|^\#line\s+---(?=\s)|#line $line_no|;
320 print STDOUT $line;
321 }
322 }
323 }
324
325 sub PRINTF {
326 my $self = shift;
327 my $fmt = shift;
328 $self->PRINT(sprintf($fmt, @_));
329 }
330
331 sub DESTROY {
332 # Not necessary if we're careful to end with a "\n"
333 my $self = shift;
334 print STDOUT $$self;
335 }
336 }
337
338 my $cfile = $filename;
339 $cfile =~ s/\.xs$/.c/i or $cfile .= ".c";
340 tie(*PSEUDO_STDOUT, 'xsubpp::counter', $cfile);
341 select PSEUDO_STDOUT;
342}
343
8e07c86e 344sub print_section {
6f1abe2b
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345 # the "do" is required for right semantics
346 do { $_ = shift(@line) } while !/\S/ && @line;
347
348 print("#line ", $line_no[@line_no - @line -1], " \"$filename\"\n")
d3308daf 349 if $WantLineNumbers && !/^\s*#\s*line\b/ && !/^#if XSubPPtmp/;
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350 for (; defined($_) && !/^$BLOCK_re/o; $_ = shift(@line)) {
351 print "$_\n";
352 }
6f1abe2b 353 print "$xsubpp::counter::SECTION_END_MARKER\n" if $WantLineNumbers;
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354}
355
cfc02341
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356sub merge_section {
357 my $in = '';
358
359 while (!/\S/ && @line) {
360 $_ = shift(@line);
361 }
362
363 for (; defined($_) && !/^$BLOCK_re/o; $_ = shift(@line)) {
364 $in .= "$_\n";
365 }
366 chomp $in;
367 return $in;
368}
369
8fc38fda
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370sub process_keyword($)
371{
372 my($pattern) = @_ ;
373 my $kwd ;
374
375 &{"${kwd}_handler"}()
376 while $kwd = check_keyword($pattern) ;
377}
378
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379sub CASE_handler {
380 blurt ("Error: `CASE:' after unconditional `CASE:'")
381 if $condnum && $cond eq '';
382 $cond = $_;
383 TrimWhitespace($cond);
384 print " ", ($condnum++ ? " else" : ""), ($cond ? " if ($cond)\n" : "\n");
385 $_ = '' ;
386}
387
f8b8e0a4
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388my $process_inout = 1;
389my $process_argtypes = 1;
390
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391sub INPUT_handler {
392 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
393 last if /^\s*NOT_IMPLEMENTED_YET/;
394 next unless /\S/; # skip blank lines
395
396 TrimWhitespace($_) ;
397 my $line = $_ ;
398
399 # remove trailing semicolon if no initialisation
7ad6fb0b 400 s/\s*;$//g unless /[=;+].*\S/ ;
8e07c86e
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401
402 # check for optional initialisation code
403 my $var_init = '' ;
7ad6fb0b 404 $var_init = $1 if s/\s*([=;+].*)$//s ;
8e07c86e
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405 $var_init =~ s/"/\\"/g;
406
407 s/\s+/ /g;
408 my ($var_type, $var_addr, $var_name) = /^(.*?[^& ]) *(\&?) *\b(\w+)$/s
409 or blurt("Error: invalid argument declaration '$line'"), next;
410
411 # Check for duplicate definitions
412 blurt ("Error: duplicate definition of argument '$var_name' ignored"), next
f8b8e0a4
GS
413 if $arg_list{$var_name}++
414 or defined $arg_types{$var_name} and not $processing_arg_with_types;
8e07c86e
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415
416 $thisdone |= $var_name eq "THIS";
417 $retvaldone |= $var_name eq "RETVAL";
418 $var_types{$var_name} = $var_type;
ddf6bed1
IZ
419 # XXXX This check is a safeguard against the unfinished conversion of
420 # generate_init(). When generate_init() is fixed,
421 # one can use 2-args map_type() unconditionally.
422 if ($var_type =~ / \( \s* \* \s* \) /x) {
423 # Function pointers are not yet supported with &output_init!
424 print "\t" . &map_type($var_type, $var_name);
425 $name_printed = 1;
426 } else {
427 print "\t" . &map_type($var_type);
428 $name_printed = 0;
429 }
8e07c86e 430 $var_num = $args_match{$var_name};
382b8d97 431
8fc38fda
PP
432 $proto_arg[$var_num] = ProtoString($var_type)
433 if $var_num ;
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434 if ($var_addr) {
435 $var_addr{$var_name} = 1;
436 $func_args =~ s/\b($var_name)\b/&$1/;
437 }
f8b8e0a4 438 if ($var_init =~ /^[=;]\s*NO_INIT\s*;?\s*$/
63385af5 439 or $in_out{$var_name} and $in_out{$var_name} eq 'OUTLIST'
f8b8e0a4 440 and $var_init !~ /\S/) {
ddf6bed1
IZ
441 if ($name_printed) {
442 print ";\n";
443 } else {
9bea678f 444 print "\t$var_name;\n";
ddf6bed1 445 }
8e07c86e 446 } elsif ($var_init =~ /\S/) {
ddf6bed1 447 &output_init($var_type, $var_num, $var_name, $var_init, $name_printed);
8e07c86e
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448 } elsif ($var_num) {
449 # generate initialization code
ddf6bed1 450 &generate_init($var_type, $var_num, $var_name, $name_printed);
8e07c86e
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451 } else {
452 print ";\n";
453 }
454 }
455}
456
457sub OUTPUT_handler {
458 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
459 next unless /\S/;
ef50df4b
GS
460 if (/^\s*SETMAGIC\s*:\s*(ENABLE|DISABLE)\s*/) {
461 $DoSetMagic = ($1 eq "ENABLE" ? 1 : 0);
462 next;
463 }
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AD
464 my ($outarg, $outcode) = /^\s*(\S+)\s*(.*?)\s*$/s ;
465 blurt ("Error: duplicate OUTPUT argument '$outarg' ignored"), next
466 if $outargs{$outarg} ++ ;
467 if (!$gotRETVAL and $outarg eq 'RETVAL') {
468 # deal with RETVAL last
469 $RETVAL_code = $outcode ;
470 $gotRETVAL = 1 ;
471 next ;
472 }
473 blurt ("Error: OUTPUT $outarg not an argument"), next
474 unless defined($args_match{$outarg});
475 blurt("Error: No input definition for OUTPUT argument '$outarg' - ignored"), next
476 unless defined $var_types{$outarg} ;
f78230ad 477 $var_num = $args_match{$outarg};
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478 if ($outcode) {
479 print "\t$outcode\n";
f78230ad 480 print "\tSvSETMAGIC(ST(" , $var_num-1 , "));\n" if $DoSetMagic;
8e07c86e 481 } else {
ef50df4b 482 &generate_output($var_types{$outarg}, $var_num, $outarg, $DoSetMagic);
8e07c86e
AD
483 }
484 }
485}
486
cfc02341
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487sub C_ARGS_handler() {
488 my $in = merge_section();
489
490 TrimWhitespace($in);
491 $func_args = $in;
492}
493
494sub INTERFACE_MACRO_handler() {
495 my $in = merge_section();
496
497 TrimWhitespace($in);
498 if ($in =~ /\s/) { # two
499 ($interface_macro, $interface_macro_set) = split ' ', $in;
500 } else {
501 $interface_macro = $in;
502 $interface_macro_set = 'UNKNOWN_CVT'; # catch later
503 }
504 $interface = 1; # local
505 $Interfaces = 1; # global
506}
507
508sub INTERFACE_handler() {
509 my $in = merge_section();
510
511 TrimWhitespace($in);
512
513 foreach (split /[\s,]+/, $in) {
514 $Interfaces{$_} = $_;
515 }
516 print Q<<"EOF";
517# XSFUNCTION = $interface_macro($ret_type,cv,XSANY.any_dptr);
518EOF
519 $interface = 1; # local
520 $Interfaces = 1; # global
521}
522
8fc38fda
PP
523sub CLEANUP_handler() { print_section() }
524sub PREINIT_handler() { print_section() }
63385af5 525sub POSTCALL_handler() { print_section() }
8fc38fda
PP
526sub INIT_handler() { print_section() }
527
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AD
528sub GetAliases
529{
530 my ($line) = @_ ;
531 my ($orig) = $line ;
532 my ($alias) ;
533 my ($value) ;
534
535 # Parse alias definitions
536 # format is
537 # alias = value alias = value ...
538
539 while ($line =~ s/^\s*([\w:]+)\s*=\s*(\w+)\s*//) {
540 $alias = $1 ;
541 $orig_alias = $alias ;
542 $value = $2 ;
543
544 # check for optional package definition in the alias
545 $alias = $Packprefix . $alias if $alias !~ /::/ ;
546
547 # check for duplicate alias name & duplicate value
548 Warn("Warning: Ignoring duplicate alias '$orig_alias'")
4230ab3f 549 if defined $XsubAliases{$alias} ;
8e07c86e 550
4230ab3f
PP
551 Warn("Warning: Aliases '$orig_alias' and '$XsubAliasValues{$value}' have identical values")
552 if $XsubAliasValues{$value} ;
8e07c86e 553
4230ab3f
PP
554 $XsubAliases = 1;
555 $XsubAliases{$alias} = $value ;
556 $XsubAliasValues{$value} = $orig_alias ;
8e07c86e
AD
557 }
558
559 blurt("Error: Cannot parse ALIAS definitions from '$orig'")
560 if $line ;
561}
562
382b8d97 563sub ALIAS_handler ()
8e07c86e
AD
564{
565 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
566 next unless /\S/;
567 TrimWhitespace($_) ;
568 GetAliases($_) if $_ ;
569 }
570}
571
382b8d97 572sub REQUIRE_handler ()
8e07c86e
AD
573{
574 # the rest of the current line should contain a version number
575 my ($Ver) = $_ ;
576
577 TrimWhitespace($Ver) ;
578
579 death ("Error: REQUIRE expects a version number")
580 unless $Ver ;
581
582 # check that the version number is of the form n.n
583 death ("Error: REQUIRE: expected a number, got '$Ver'")
584 unless $Ver =~ /^\d+(\.\d*)?/ ;
585
586 death ("Error: xsubpp $Ver (or better) required--this is only $XSUBPP_version.")
587 unless $XSUBPP_version >= $Ver ;
588}
589
8fc38fda
PP
590sub VERSIONCHECK_handler ()
591{
592 # the rest of the current line should contain either ENABLE or
593 # DISABLE
594
595 TrimWhitespace($_) ;
596
597 # check for ENABLE/DISABLE
598 death ("Error: VERSIONCHECK: ENABLE/DISABLE")
599 unless /^(ENABLE|DISABLE)/i ;
600
601 $WantVersionChk = 1 if $1 eq 'ENABLE' ;
602 $WantVersionChk = 0 if $1 eq 'DISABLE' ;
603
604}
605
382b8d97
PM
606sub PROTOTYPE_handler ()
607{
7d41bd0a
PM
608 my $specified ;
609
c07a80fd
PP
610 death("Error: Only 1 PROTOTYPE definition allowed per xsub")
611 if $proto_in_this_xsub ++ ;
612
382b8d97
PM
613 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
614 next unless /\S/;
7d41bd0a 615 $specified = 1 ;
382b8d97
PM
616 TrimWhitespace($_) ;
617 if ($_ eq 'DISABLE') {
618 $ProtoThisXSUB = 0
619 }
620 elsif ($_ eq 'ENABLE') {
621 $ProtoThisXSUB = 1
622 }
623 else {
624 # remove any whitespace
625 s/\s+//g ;
626 death("Error: Invalid prototype '$_'")
627 unless ValidProtoString($_) ;
628 $ProtoThisXSUB = C_string($_) ;
629 }
630 }
c07a80fd 631
7d41bd0a
PM
632 # If no prototype specified, then assume empty prototype ""
633 $ProtoThisXSUB = 2 unless $specified ;
634
8fc38fda 635 $ProtoUsed = 1 ;
c07a80fd 636
382b8d97
PM
637}
638
db3b9414
PP
639sub SCOPE_handler ()
640{
641 death("Error: Only 1 SCOPE declaration allowed per xsub")
642 if $scope_in_this_xsub ++ ;
643
644 for (; !/^$BLOCK_re/o; $_ = shift(@line)) {
645 next unless /\S/;
646 TrimWhitespace($_) ;
647 if ($_ =~ /^DISABLE/i) {
648 $ScopeThisXSUB = 0
649 }
650 elsif ($_ =~ /^ENABLE/i) {
651 $ScopeThisXSUB = 1
652 }
653 }
654
655}
656
382b8d97
PM
657sub PROTOTYPES_handler ()
658{
659 # the rest of the current line should contain either ENABLE or
660 # DISABLE
661
662 TrimWhitespace($_) ;
663
664 # check for ENABLE/DISABLE
665 death ("Error: PROTOTYPES: ENABLE/DISABLE")
666 unless /^(ENABLE|DISABLE)/i ;
667
668 $WantPrototypes = 1 if $1 eq 'ENABLE' ;
669 $WantPrototypes = 0 if $1 eq 'DISABLE' ;
8fc38fda 670 $ProtoUsed = 1 ;
382b8d97
PM
671
672}
673
8fc38fda
PP
674sub INCLUDE_handler ()
675{
676 # the rest of the current line should contain a valid filename
677
678 TrimWhitespace($_) ;
679
8fc38fda
PP
680 death("INCLUDE: filename missing")
681 unless $_ ;
682
683 death("INCLUDE: output pipe is illegal")
684 if /^\s*\|/ ;
685
686 # simple minded recursion detector
687 death("INCLUDE loop detected")
688 if $IncludedFiles{$_} ;
689
690 ++ $IncludedFiles{$_} unless /\|\s*$/ ;
691
692 # Save the current file context.
4230ab3f
PP
693 push(@XSStack, {
694 type => 'file',
8fc38fda
PP
695 LastLine => $lastline,
696 LastLineNo => $lastline_no,
697 Line => \@line,
698 LineNo => \@line_no,
699 Filename => $filename,
c07a80fd 700 Handle => $FH,
8fc38fda
PP
701 }) ;
702
c07a80fd 703 ++ $FH ;
8fc38fda
PP
704
705 # open the new file
c07a80fd 706 open ($FH, "$_") or death("Cannot open '$_': $!") ;
8fc38fda
PP
707
708 print Q<<"EOF" ;
709#
710#/* INCLUDE: Including '$_' from '$filename' */
711#
712EOF
713
8fc38fda
PP
714 $filename = $_ ;
715
c07a80fd
PP
716 # Prime the pump by reading the first
717 # non-blank line
718
719 # skip leading blank lines
720 while (<$FH>) {
721 last unless /^\s*$/ ;
722 }
723
724 $lastline = $_ ;
8fc38fda
PP
725 $lastline_no = $. ;
726
727}
728
729sub PopFile()
730{
4230ab3f
PP
731 return 0 unless $XSStack[-1]{type} eq 'file' ;
732
733 my $data = pop @XSStack ;
8fc38fda
PP
734 my $ThisFile = $filename ;
735 my $isPipe = ($filename =~ /\|\s*$/) ;
736
737 -- $IncludedFiles{$filename}
738 unless $isPipe ;
739
c07a80fd 740 close $FH ;
8fc38fda 741
c07a80fd 742 $FH = $data->{Handle} ;
8fc38fda
PP
743 $filename = $data->{Filename} ;
744 $lastline = $data->{LastLine} ;
745 $lastline_no = $data->{LastLineNo} ;
746 @line = @{ $data->{Line} } ;
747 @line_no = @{ $data->{LineNo} } ;
4230ab3f 748
8fc38fda
PP
749 if ($isPipe and $? ) {
750 -- $lastline_no ;
751 print STDERR "Error reading from pipe '$ThisFile': $! in $filename, line $lastline_no\n" ;
752 exit 1 ;
753 }
754
755 print Q<<"EOF" ;
756#
757#/* INCLUDE: Returning to '$filename' from '$ThisFile' */
758#
759EOF
760
761 return 1 ;
762}
763
382b8d97
PM
764sub ValidProtoString ($)
765{
766 my($string) = @_ ;
767
768 if ( $string =~ /^$proto_re+$/ ) {
769 return $string ;
770 }
771
772 return 0 ;
773}
774
775sub C_string ($)
776{
777 my($string) = @_ ;
778
779 $string =~ s[\\][\\\\]g ;
780 $string ;
781}
782
783sub ProtoString ($)
784{
785 my ($type) = @_ ;
786
93d3b392 787 $proto_letter{$type} or "\$" ;
382b8d97
PM
788}
789
8e07c86e
AD
790sub check_cpp {
791 my @cpp = grep(/^\#\s*(?:if|e\w+)/, @line);
792 if (@cpp) {
793 my ($cpp, $cpplevel);
794 for $cpp (@cpp) {
795 if ($cpp =~ /^\#\s*if/) {
796 $cpplevel++;
797 } elsif (!$cpplevel) {
798 Warn("Warning: #else/elif/endif without #if in this function");
4230ab3f
PP
799 print STDERR " (precede it with a blank line if the matching #if is outside the function)\n"
800 if $XSStack[-1]{type} eq 'if';
8e07c86e
AD
801 return;
802 } elsif ($cpp =~ /^\#\s*endif/) {
803 $cpplevel--;
804 }
805 }
806 Warn("Warning: #if without #endif in this function") if $cpplevel;
807 }
808}
809
810
8990e307 811sub Q {
e50aee73 812 my($text) = @_;
4633a7c4 813 $text =~ s/^#//gm;
2304df62
AD
814 $text =~ s/\[\[/{/g;
815 $text =~ s/\]\]/}/g;
8990e307 816 $text;
93a17b20
LW
817}
818
c07a80fd 819open($FH, $filename) or die "cannot open $filename: $!\n";
c2960299 820
f06db76b 821# Identify the version of xsubpp used
f06db76b 822print <<EOM ;
e50aee73
AD
823/*
824 * This file was generated automatically by xsubpp version $XSUBPP_version from the
93d3b392 825 * contents of $filename. Do not edit this file, edit $filename instead.
e50aee73
AD
826 *
827 * ANY CHANGES MADE HERE WILL BE LOST!
f06db76b
AD
828 *
829 */
e50aee73 830
f06db76b 831EOM
6f1abe2b
JT
832
833
834print("#line 1 \"$filename\"\n")
835 if $WantLineNumbers;
f06db76b 836
c07a80fd 837while (<$FH>) {
e50aee73
AD
838 last if ($Module, $Package, $Prefix) =
839 /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/;
01f988be
GS
840
841 if ($OBJ) {
b85ee828 842 s/#if(?:def\s|\s+defined)\s*(\(__cplusplus\)|__cplusplus)/#if defined(__cplusplus) && !defined(PERL_OBJECT)/;
01f988be 843 }
a0d0e21e 844 print $_;
93a17b20 845}
e50aee73
AD
846&Exit unless defined $_;
847
cfc02341
IZ
848print "$xsubpp::counter::SECTION_END_MARKER\n" if $WantLineNumbers;
849
8fc38fda
PP
850$lastline = $_;
851$lastline_no = $.;
93a17b20 852
c07a80fd 853# Read next xsub into @line from ($lastline, <$FH>).
2304df62
AD
854sub fetch_para {
855 # parse paragraph
4230ab3f
PP
856 death ("Error: Unterminated `#if/#ifdef/#ifndef'")
857 if !defined $lastline && $XSStack[-1]{type} eq 'if';
2304df62 858 @line = ();
c2960299 859 @line_no = () ;
4230ab3f 860 return PopFile() if !defined $lastline;
e50aee73
AD
861
862 if ($lastline =~
863 /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/) {
864 $Module = $1;
8e07c86e
AD
865 $Package = defined($2) ? $2 : ''; # keep -w happy
866 $Prefix = defined($3) ? $3 : ''; # keep -w happy
ff68c719 867 $Prefix = quotemeta $Prefix ;
e50aee73 868 ($Module_cname = $Module) =~ s/\W/_/g;
8e07c86e 869 ($Packid = $Package) =~ tr/:/_/;
e50aee73 870 $Packprefix = $Package;
8e07c86e 871 $Packprefix .= "::" if $Packprefix ne "";
2304df62 872 $lastline = "";
e50aee73
AD
873 }
874
875 for(;;) {
876 if ($lastline !~ /^\s*#/ ||
4230ab3f
PP
877 # CPP directives:
878 # ANSI: if ifdef ifndef elif else endif define undef
879 # line error pragma
880 # gcc: warning include_next
881 # obj-c: import
882 # others: ident (gcc notes that some cpps have this one)
883 $lastline =~ /^#[ \t]*(?:(?:if|ifn?def|elif|else|endif|define|undef|pragma|error|warning|line\s+\d+|ident)\b|(?:include(?:_next)?|import)\s*["<].*[>"])/) {
e50aee73
AD
884 last if $lastline =~ /^\S/ && @line && $line[-1] eq "";
885 push(@line, $lastline);
886 push(@line_no, $lastline_no) ;
93a17b20 887 }
e50aee73
AD
888
889 # Read next line and continuation lines
c07a80fd 890 last unless defined($lastline = <$FH>);
e50aee73
AD
891 $lastline_no = $.;
892 my $tmp_line;
893 $lastline .= $tmp_line
c07a80fd 894 while ($lastline =~ /\\$/ && defined($tmp_line = <$FH>));
f8b8e0a4 895
8e07c86e 896 chomp $lastline;
e50aee73 897 $lastline =~ s/^\s+$//;
2304df62 898 }
e50aee73 899 pop(@line), pop(@line_no) while @line && $line[-1] eq "";
e50aee73 900 1;
2304df62 901}
93a17b20 902
c2960299 903PARAGRAPH:
8e07c86e 904while (fetch_para()) {
e50aee73 905 # Print initial preprocessor statements and blank lines
4230ab3f
PP
906 while (@line && $line[0] !~ /^[^\#]/) {
907 my $line = shift(@line);
908 print $line, "\n";
909 next unless $line =~ /^\#\s*((if)(?:n?def)?|elsif|else|endif)\b/;
910 my $statement = $+;
911 if ($statement eq 'if') {
912 $XSS_work_idx = @XSStack;
913 push(@XSStack, {type => 'if'});
914 } else {
915 death ("Error: `$statement' with no matching `if'")
916 if $XSStack[-1]{type} ne 'if';
917 if ($XSStack[-1]{varname}) {
918 push(@InitFileCode, "#endif\n");
919 push(@BootCode, "#endif");
920 }
921
922 my(@fns) = keys %{$XSStack[-1]{functions}};
923 if ($statement ne 'endif') {
924 # Hide the functions defined in other #if branches, and reset.
925 @{$XSStack[-1]{other_functions}}{@fns} = (1) x @fns;
926 @{$XSStack[-1]}{qw(varname functions)} = ('', {});
927 } else {
928 my($tmp) = pop(@XSStack);
929 0 while (--$XSS_work_idx
930 && $XSStack[$XSS_work_idx]{type} ne 'if');
931 # Keep all new defined functions
932 push(@fns, keys %{$tmp->{other_functions}});
933 @{$XSStack[$XSS_work_idx]{functions}}{@fns} = (1) x @fns;
934 }
935 }
936 }
e50aee73
AD
937
938 next PARAGRAPH unless @line;
939
4230ab3f
PP
940 if ($XSS_work_idx && !$XSStack[$XSS_work_idx]{varname}) {
941 # We are inside an #if, but have not yet #defined its xsubpp variable.
942 print "#define $cpp_next_tmp 1\n\n";
943 push(@InitFileCode, "#if $cpp_next_tmp\n");
944 push(@BootCode, "#if $cpp_next_tmp");
945 $XSStack[$XSS_work_idx]{varname} = $cpp_next_tmp++;
946 }
947
55497cff
PP
948 death ("Code is not inside a function"
949 ." (maybe last function was ended by a blank line "
950 ." followed by a a statement on column one?)")
e50aee73
AD
951 if $line[0] =~ /^\s/;
952
2304df62
AD
953 # initialize info arrays
954 undef(%args_match);
955 undef(%var_types);
956 undef(%var_addr);
957 undef(%defaults);
958 undef($class);
959 undef($static);
960 undef($elipsis);
f06db76b 961 undef($wantRETVAL) ;
f8b8e0a4 962 undef($RETVAL_no_return) ;
f06db76b 963 undef(%arg_list) ;
382b8d97 964 undef(@proto_arg) ;
f8b8e0a4
GS
965 undef(@arg_with_types) ;
966 undef($processing_arg_with_types) ;
967 undef(%arg_types) ;
968 undef(@in_out) ;
969 undef(%in_out) ;
c07a80fd 970 undef($proto_in_this_xsub) ;
db3b9414 971 undef($scope_in_this_xsub) ;
cfc02341 972 undef($interface);
f8b8e0a4 973 undef($prepush_done);
cfc02341
IZ
974 $interface_macro = 'XSINTERFACE_FUNC' ;
975 $interface_macro_set = 'XSINTERFACE_FUNC_SET' ;
382b8d97 976 $ProtoThisXSUB = $WantPrototypes ;
db3b9414 977 $ScopeThisXSUB = 0;
f8b8e0a4 978 $xsreturn = 0;
2304df62 979
8e07c86e 980 $_ = shift(@line);
8fc38fda
PP
981 while ($kwd = check_keyword("REQUIRE|PROTOTYPES|VERSIONCHECK|INCLUDE")) {
982 &{"${kwd}_handler"}() ;
8e07c86e
AD
983 next PARAGRAPH unless @line ;
984 $_ = shift(@line);
985 }
c2960299 986
8e07c86e
AD
987 if (check_keyword("BOOT")) {
988 &check_cpp;
6f1abe2b
JT
989 push (@BootCode, "#line $line_no[@line_no - @line] \"$filename\"")
990 if $WantLineNumbers && $line[0] !~ /^\s*#\s*line\b/;
991 push (@BootCode, @line, "") ;
c2960299 992 next PARAGRAPH ;
a0d0e21e 993 }
c2960299 994
8e07c86e
AD
995
996 # extract return type, function name and arguments
cfc02341 997 ($ret_type) = TidyType($_);
f8b8e0a4 998 $RETVAL_no_return = 1 if $ret_type =~ s/^NO_OUTPUT\s+//;
8e07c86e 999
c2960299
AD
1000 # a function definition needs at least 2 lines
1001 blurt ("Error: Function definition too short '$ret_type'"), next PARAGRAPH
1002 unless @line ;
1003
8e07c86e
AD
1004 $static = 1 if $ret_type =~ s/^static\s+//;
1005
2304df62 1006 $func_header = shift(@line);
c2960299 1007 blurt ("Error: Cannot parse function definition from '$func_header'"), next PARAGRAPH
f8b8e0a4 1008 unless $func_header =~ /^(?:([\w:]*)::)?(\w+)\s*\(\s*(.*?)\s*\)\s*(const)?\s*(;\s*)?$/s;
c2960299 1009
8e07c86e 1010 ($class, $func_name, $orig_args) = ($1, $2, $3) ;
f480b56a 1011 $class = "$4 $class" if $4;
2304df62 1012 ($pname = $func_name) =~ s/^($Prefix)?/$Packprefix/;
ff68c719
PP
1013 ($clean_func_name = $func_name) =~ s/^$Prefix//;
1014 $Full_func_name = "${Packid}_$clean_func_name";
ff0cee69 1015 if ($Is_VMS) { $Full_func_name = $SymSet->addsym($Full_func_name); }
c2960299
AD
1016
1017 # Check for duplicate function definition
4230ab3f
PP
1018 for $tmp (@XSStack) {
1019 next unless defined $tmp->{functions}{$Full_func_name};
ff68c719 1020 Warn("Warning: duplicate function definition '$clean_func_name' detected");
4230ab3f 1021 last;
8e07c86e 1022 }
4230ab3f 1023 $XSStack[$XSS_work_idx]{functions}{$Full_func_name} ++ ;
cfc02341 1024 %XsubAliases = %XsubAliasValues = %Interfaces = ();
ef50df4b 1025 $DoSetMagic = 1;
c2960299 1026
f8b8e0a4
GS
1027 $orig_args =~ s/\\\s*/ /g; # process line continuations
1028
1029 my %out_vars;
1030 if ($process_argtypes and $orig_args =~ /\S/) {
1031 my $args = "$orig_args ,";
14455d6c
GS
1032 if ($args =~ /^( (??{ $C_arg }) , )* $ /x) {
1033 @args = ($args =~ /\G ( (??{ $C_arg }) ) , /xg);
f8b8e0a4
GS
1034 for ( @args ) {
1035 s/^\s+//;
1036 s/\s+$//;
1037 my $arg = $_;
1038 my $default;
1039 ($arg, $default) = / ( [^=]* ) ( (?: = .* )? ) /x;
1040 my ($pre, $name) = ($arg =~ /(.*?) \s* \b(\w+) \s* $ /x);
1041 next unless length $pre;
1042 my $out_type;
1043 my $inout_var;
63385af5 1044 if ($process_inout and s/^(IN|IN_OUTLIST|OUTLIST)\s+//) {
f8b8e0a4 1045 my $type = $1;
63385af5
GS
1046 $out_type = $type if $type ne 'IN';
1047 $arg =~ s/^(IN|IN_OUTLIST|OUTLIST)\s+//;
f8b8e0a4
GS
1048 }
1049 if (/\W/) { # Has a type
1050 push @arg_with_types, $arg;
1051 # warn "pushing '$arg'\n";
1052 $arg_types{$name} = $arg;
1053 $_ = "$name$default";
1054 }
63385af5 1055 $out_vars{$_} = 1 if $out_type eq 'OUTLIST';
f8b8e0a4
GS
1056 push @in_out, $name if $out_type;
1057 $in_out{$name} = $out_type if $out_type;
1058 }
1059 } else {
1060 @args = split(/\s*,\s*/, $orig_args);
1061 Warn("Warning: cannot parse argument list '$orig_args', fallback to split");
1062 }
1063 } else {
1064 @args = split(/\s*,\s*/, $orig_args);
1065 for (@args) {
63385af5 1066 if ($process_inout and s/^(IN|IN_OUTLIST|OUTLIST)\s+//) {
f8b8e0a4 1067 my $out_type = $1;
63385af5
GS
1068 next if $out_type eq 'IN';
1069 $out_vars{$_} = 1 if $out_type eq 'OUTLIST';
f8b8e0a4
GS
1070 push @in_out, $name;
1071 $in_out{$_} = $out_type;
1072 }
1073 }
1074 }
a0d0e21e 1075 if (defined($class)) {
683d4eee
JL
1076 my $arg0 = ((defined($static) or $func_name eq 'new')
1077 ? "CLASS" : "THIS");
8e07c86e 1078 unshift(@args, $arg0);
f8b8e0a4 1079 ($report_args = "$arg0, $report_args") =~ s/^\w+, $/$arg0/;
2304df62 1080 }
f8b8e0a4
GS
1081 my $extra_args = 0;
1082 @args_num = ();
1083 $num_args = 0;
1084 my $report_args = '';
1085 foreach $i (0 .. $#args) {
2304df62
AD
1086 if ($args[$i] =~ s/\.\.\.//) {
1087 $elipsis = 1;
f8b8e0a4
GS
1088 if ($args[$i] eq '' && $i == $#args) {
1089 $report_args .= ", ...";
2304df62
AD
1090 pop(@args);
1091 last;
1092 }
1093 }
f8b8e0a4
GS
1094 if ($out_vars{$args[$i]}) {
1095 push @args_num, undef;
1096 } else {
1097 push @args_num, ++$num_args;
1098 $report_args .= ", $args[$i]";
1099 }
8e07c86e 1100 if ($args[$i] =~ /^([^=]*[^\s=])\s*=\s*(.*)/s) {
f8b8e0a4 1101 $extra_args++;
2304df62
AD
1102 $args[$i] = $1;
1103 $defaults{$args[$i]} = $2;
1104 $defaults{$args[$i]} =~ s/"/\\"/g;
1105 }
93d3b392 1106 $proto_arg[$i+1] = "\$" ;
2304df62 1107 }
f8b8e0a4
GS
1108 $min_args = $num_args - $extra_args;
1109 $report_args =~ s/"/\\"/g;
1110 $report_args =~ s/^,\s+//;
1111 my @func_args = @args;
1112 shift @func_args if defined($class);
1113
1114 for (@func_args) {
1115 s/^/&/ if $in_out{$_};
2304df62 1116 }
f8b8e0a4
GS
1117 $func_args = join(", ", @func_args);
1118 @args_match{@args} = @args_num;
2304df62 1119
8e07c86e 1120 $PPCODE = grep(/^\s*PPCODE\s*:/, @line);
93d3b392 1121 $CODE = grep(/^\s*CODE\s*:/, @line);
6c5fb52b
TB
1122 # Detect CODE: blocks which use ST(n)= or XST_m*(n,v)
1123 # to set explicit return values.
1124 $EXPLICIT_RETURN = ($CODE &&
1125 ("@line" =~ /(\bST\s*\([^;]*=) | (\bXST_m\w+\s*\()/x ));
8e07c86e 1126 $ALIAS = grep(/^\s*ALIAS\s*:/, @line);
cfc02341 1127 $INTERFACE = grep(/^\s*INTERFACE\s*:/, @line);
8e07c86e 1128
f8b8e0a4
GS
1129 $xsreturn = 1 if $EXPLICIT_RETURN;
1130
2304df62 1131 # print function header
a0d0e21e 1132 print Q<<"EOF";
ff68c719 1133#XS(XS_${Full_func_name})
2304df62 1134#[[
a0d0e21e 1135# dXSARGS;
93a17b20 1136EOF
8e07c86e
AD
1137 print Q<<"EOF" if $ALIAS ;
1138# dXSI32;
1139EOF
cfc02341
IZ
1140 print Q<<"EOF" if $INTERFACE ;
1141# dXSFUNCTION($ret_type);
1142EOF
2304df62 1143 if ($elipsis) {
8e07c86e 1144 $cond = ($min_args ? qq(items < $min_args) : 0);
2304df62
AD
1145 }
1146 elsif ($min_args == $num_args) {
1147 $cond = qq(items != $min_args);
1148 }
1149 else {
1150 $cond = qq(items < $min_args || items > $num_args);
1151 }
8990e307 1152
2304df62
AD
1153 print Q<<"EOF" if $except;
1154# char errbuf[1024];
1155# *errbuf = '\0';
1156EOF
1157
8e07c86e
AD
1158 if ($ALIAS)
1159 { print Q<<"EOF" if $cond }
1160# if ($cond)
f8b8e0a4 1161# Perl_croak(aTHX_ "Usage: %s($report_args)", GvNAME(CvGV(cv)));
8e07c86e
AD
1162EOF
1163 else
1164 { print Q<<"EOF" if $cond }
1165# if ($cond)
f8b8e0a4 1166# Perl_croak(aTHX_ "Usage: $pname($report_args)");
93a17b20
LW
1167EOF
1168
a0d0e21e
LW
1169 print Q<<"EOF" if $PPCODE;
1170# SP -= items;
1171EOF
1172
2304df62 1173 # Now do a block of some sort.
93a17b20 1174
2304df62 1175 $condnum = 0;
8e07c86e
AD
1176 $cond = ''; # last CASE: condidional
1177 push(@line, "$END:");
1178 push(@line_no, $line_no[-1]);
1179 $_ = '';
1180 &check_cpp;
2304df62 1181 while (@line) {
8e07c86e
AD
1182 &CASE_handler if check_keyword("CASE");
1183 print Q<<"EOF";
1184# $except [[
93a17b20
LW
1185EOF
1186
1187 # do initialization of input variables
1188 $thisdone = 0;
1189 $retvaldone = 0;
463ee0b2 1190 $deferred = "";
c2960299
AD
1191 %arg_list = () ;
1192 $gotRETVAL = 0;
f06db76b 1193
8fc38fda 1194 INPUT_handler() ;
cfc02341 1195 process_keyword("INPUT|PREINIT|INTERFACE_MACRO|C_ARGS|ALIAS|PROTOTYPE|SCOPE") ;
8fc38fda 1196
db3b9414
PP
1197 print Q<<"EOF" if $ScopeThisXSUB;
1198# ENTER;
1199# [[
1200EOF
1201
a0d0e21e 1202 if (!$thisdone && defined($class)) {
683d4eee 1203 if (defined($static) or $func_name eq 'new') {
a0d0e21e
LW
1204 print "\tchar *";
1205 $var_types{"CLASS"} = "char *";
1206 &generate_init("char *", 1, "CLASS");
1207 }
1208 else {
93a17b20
LW
1209 print "\t$class *";
1210 $var_types{"THIS"} = "$class *";
1211 &generate_init("$class *", 1, "THIS");
a0d0e21e 1212 }
93a17b20
LW
1213 }
1214
1215 # do code
1216 if (/^\s*NOT_IMPLEMENTED_YET/) {
cea2e8a9 1217 print "\n\tPerl_croak(aTHX_ \"$pname: not implemented yet\");\n";
4633a7c4 1218 $_ = '' ;
93a17b20
LW
1219 } else {
1220 if ($ret_type ne "void") {
ddf6bed1 1221 print "\t" . &map_type($ret_type, 'RETVAL') . ";\n"
93a17b20
LW
1222 if !$retvaldone;
1223 $args_match{"RETVAL"} = 0;
1224 $var_types{"RETVAL"} = $ret_type;
b26a54d0
GS
1225 print "\tdXSTARG;\n"
1226 if $WantOptimize and $targetable{$type_kind{$ret_type}};
93a17b20 1227 }
db3b9414 1228
f8b8e0a4
GS
1229 if (@arg_with_types) {
1230 unshift @line, @arg_with_types, $_;
1231 $_ = "";
1232 $processing_arg_with_types = 1;
1233 INPUT_handler() ;
1234 }
8e07c86e 1235 print $deferred;
db3b9414 1236
cfc02341 1237 process_keyword("INIT|ALIAS|PROTOTYPE|INTERFACE_MACRO|INTERFACE|C_ARGS") ;
8e07c86e
AD
1238
1239 if (check_keyword("PPCODE")) {
8fc38fda 1240 print_section();
8e07c86e 1241 death ("PPCODE must be last thing") if @line;
db3b9414 1242 print "\tLEAVE;\n" if $ScopeThisXSUB;
a0d0e21e 1243 print "\tPUTBACK;\n\treturn;\n";
8e07c86e 1244 } elsif (check_keyword("CODE")) {
8fc38fda
PP
1245 print_section() ;
1246 } elsif (defined($class) and $func_name eq "DESTROY") {
a0d0e21e 1247 print "\n\t";
8e07c86e 1248 print "delete THIS;\n";
93a17b20
LW
1249 } else {
1250 print "\n\t";
1251 if ($ret_type ne "void") {
463ee0b2 1252 print "RETVAL = ";
e50aee73 1253 $wantRETVAL = 1;
93a17b20
LW
1254 }
1255 if (defined($static)) {
683d4eee 1256 if ($func_name eq 'new') {
8fc38fda 1257 $func_name = "$class";
8e07c86e
AD
1258 } else {
1259 print "${class}::";
a0d0e21e 1260 }
93a17b20 1261 } elsif (defined($class)) {
683d4eee 1262 if ($func_name eq 'new') {
8fc38fda
PP
1263 $func_name .= " $class";
1264 } else {
93a17b20 1265 print "THIS->";
8fc38fda 1266 }
93a17b20 1267 }
e50aee73
AD
1268 $func_name =~ s/^($spat)//
1269 if defined($spat);
cfc02341 1270 $func_name = 'XSFUNCTION' if $interface;
93a17b20 1271 print "$func_name($func_args);\n";
93a17b20
LW
1272 }
1273 }
1274
1275 # do output variables
f8b8e0a4
GS
1276 $gotRETVAL = 0; # 1 if RETVAL seen in OUTPUT section;
1277 undef $RETVAL_code ; # code to set RETVAL (from OUTPUT section);
1278 # $wantRETVAL set if 'RETVAL =' autogenerated
1279 ($wantRETVAL, $ret_type) = (0, 'void') if $RETVAL_no_return;
8e07c86e 1280 undef %outargs ;
63385af5 1281 process_keyword("POSTCALL|OUTPUT|ALIAS|PROTOTYPE");
f06db76b
AD
1282
1283 # all OUTPUT done, so now push the return value on the stack
8e07c86e
AD
1284 if ($gotRETVAL && $RETVAL_code) {
1285 print "\t$RETVAL_code\n";
1286 } elsif ($gotRETVAL || $wantRETVAL) {
b26a54d0
GS
1287 my $t = $WantOptimize && $targetable{$type_kind{$ret_type}};
1288 my $var = 'RETVAL';
1289 my $type = $ret_type;
1290
1291 # 0: type, 1: with_size, 2: how, 3: how_size
1292 if ($t and not $t->[1] and $t->[0] eq 'p') {
1293 # PUSHp corresponds to setpvn. Treate setpv directly
1294 my $what = eval qq("$t->[2]");
1295 warn $@ if $@;
1296
1297 print "\tsv_setpv(TARG, $what); XSprePUSH; PUSHTARG;\n";
f8b8e0a4 1298 $prepush_done = 1;
b26a54d0
GS
1299 }
1300 elsif ($t) {
1301 my $what = eval qq("$t->[2]");
1302 warn $@ if $@;
1303
1304 my $size = $t->[3];
1305 $size = '' unless defined $size;
1306 $size = eval qq("$size");
1307 warn $@ if $@;
1308 print "\tXSprePUSH; PUSH$t->[0]($what$size);\n";
f8b8e0a4 1309 $prepush_done = 1;
b26a54d0
GS
1310 }
1311 else {
1312 # RETVAL almost never needs SvSETMAGIC()
1313 &generate_output($ret_type, 0, 'RETVAL', 0);
1314 }
8e07c86e 1315 }
f06db76b 1316
f8b8e0a4
GS
1317 $xsreturn = 1 if $ret_type ne "void";
1318 my $num = $xsreturn;
1319 my $c = @in_out;
1320 print "\tXSprePUSH;" if $c and not $prepush_done;
1321 print "\tEXTEND(SP,$c);\n" if $c;
1322 $xsreturn += $c;
1323 generate_output($var_types{$_}, $num++, $_, 0, 1) for @in_out;
1324
93a17b20 1325 # do cleanup
8fc38fda 1326 process_keyword("CLEANUP|ALIAS|PROTOTYPE") ;
8e07c86e 1327
db3b9414
PP
1328 print Q<<"EOF" if $ScopeThisXSUB;
1329# ]]
1330EOF
1331 print Q<<"EOF" if $ScopeThisXSUB and not $PPCODE;
1332# LEAVE;
1333EOF
1334
93a17b20 1335 # print function trailer
8e07c86e 1336 print Q<<EOF;
2304df62 1337# ]]
8e07c86e
AD
1338EOF
1339 print Q<<EOF if $except;
8990e307
LW
1340# BEGHANDLERS
1341# CATCHALL
1342# sprintf(errbuf, "%s: %s\\tpropagated", Xname, Xreason);
1343# ENDHANDLERS
93a17b20 1344EOF
8e07c86e
AD
1345 if (check_keyword("CASE")) {
1346 blurt ("Error: No `CASE:' at top of function")
1347 unless $condnum;
1348 $_ = "CASE: $_"; # Restore CASE: label
1349 next;
8990e307 1350 }
8e07c86e
AD
1351 last if $_ eq "$END:";
1352 death(/^$BLOCK_re/o ? "Misplaced `$1:'" : "Junk at end of function");
2304df62 1353 }
a0d0e21e 1354
2304df62
AD
1355 print Q<<EOF if $except;
1356# if (errbuf[0])
cea2e8a9 1357# Perl_croak(aTHX_ errbuf);
2304df62 1358EOF
a0d0e21e 1359
f8b8e0a4 1360 if ($xsreturn) {
93d3b392 1361 print Q<<EOF unless $PPCODE;
f8b8e0a4 1362# XSRETURN($xsreturn);
a0d0e21e 1363EOF
93d3b392
PP
1364 } else {
1365 print Q<<EOF unless $PPCODE;
1366# XSRETURN_EMPTY;
1367EOF
1368 }
a0d0e21e 1369
2304df62 1370 print Q<<EOF;
2304df62 1371#]]
8990e307 1372#
93a17b20 1373EOF
382b8d97 1374
4230ab3f
PP
1375 my $newXS = "newXS" ;
1376 my $proto = "" ;
1377
382b8d97
PM
1378 # Build the prototype string for the xsub
1379 if ($ProtoThisXSUB) {
4230ab3f
PP
1380 $newXS = "newXSproto";
1381
6f1abe2b 1382 if ($ProtoThisXSUB eq 2) {
4230ab3f
PP
1383 # User has specified empty prototype
1384 $proto = ', ""' ;
1385 }
6f1abe2b 1386 elsif ($ProtoThisXSUB ne 1) {
7d41bd0a 1387 # User has specified a prototype
4230ab3f 1388 $proto = ', "' . $ProtoThisXSUB . '"';
382b8d97
PM
1389 }
1390 else {
1391 my $s = ';';
1392 if ($min_args < $num_args) {
1393 $s = '';
1394 $proto_arg[$min_args] .= ";" ;
1395 }
4230ab3f 1396 push @proto_arg, "$s\@"
382b8d97
PM
1397 if $elipsis ;
1398
4230ab3f 1399 $proto = ', "' . join ("", @proto_arg) . '"';
382b8d97
PM
1400 }
1401 }
1402
4230ab3f
PP
1403 if (%XsubAliases) {
1404 $XsubAliases{$pname} = 0
1405 unless defined $XsubAliases{$pname} ;
1406 while ( ($name, $value) = each %XsubAliases) {
1407 push(@InitFileCode, Q<<"EOF");
1408# cv = newXS(\"$name\", XS_$Full_func_name, file);
1409# XSANY.any_i32 = $value ;
1410EOF
1411 push(@InitFileCode, Q<<"EOF") if $proto;
1412# sv_setpv((SV*)cv$proto) ;
1413EOF
1414 }
cfc02341
IZ
1415 }
1416 elsif ($interface) {
1417 while ( ($name, $value) = each %Interfaces) {
1418 $name = "$Package\::$name" unless $name =~ /::/;
1419 push(@InitFileCode, Q<<"EOF");
1420# cv = newXS(\"$name\", XS_$Full_func_name, file);
1421# $interface_macro_set(cv,$value) ;
1422EOF
1423 push(@InitFileCode, Q<<"EOF") if $proto;
1424# sv_setpv((SV*)cv$proto) ;
1425EOF
1426 }
4230ab3f
PP
1427 }
1428 else {
1429 push(@InitFileCode,
1430 " ${newXS}(\"$pname\", XS_$Full_func_name, file$proto);\n");
1431 }
93a17b20
LW
1432}
1433
1434# print initialization routine
7ee8c957 1435
e3b8966e 1436print Q<<"EOF";
e3b8966e
GS
1437##ifdef __cplusplus
1438#extern "C"
1439##endif
7ee8c957
GS
1440EOF
1441
8990e307 1442print Q<<"EOF";
a0d0e21e 1443#XS(boot_$Module_cname)
7ee8c957
GS
1444EOF
1445
7ee8c957 1446print Q<<"EOF";
2304df62 1447#[[
a0d0e21e 1448# dXSARGS;
8990e307
LW
1449# char* file = __FILE__;
1450#
93a17b20
LW
1451EOF
1452
8fc38fda
PP
1453print Q<<"EOF" if $WantVersionChk ;
1454# XS_VERSION_BOOTCHECK ;
1455#
1456EOF
1457
cfc02341 1458print Q<<"EOF" if defined $XsubAliases or defined $Interfaces ;
8e07c86e
AD
1459# {
1460# CV * cv ;
1461#
1462EOF
1463
4230ab3f 1464print @InitFileCode;
a0d0e21e 1465
cfc02341 1466print Q<<"EOF" if defined $XsubAliases or defined $Interfaces ;
8e07c86e
AD
1467# }
1468EOF
1469
a0d0e21e
LW
1470if (@BootCode)
1471{
6f1abe2b
JT
1472 print "\n /* Initialisation Section */\n\n" ;
1473 @line = @BootCode;
1474 print_section();
8e07c86e 1475 print "\n /* End of Initialisation Section */\n\n" ;
93a17b20 1476}
a0d0e21e 1477
e50aee73 1478print Q<<"EOF";;
3280af22 1479# XSRETURN_YES;
e50aee73 1480#]]
e3b8966e
GS
1481#
1482EOF
1483
8fc38fda
PP
1484warn("Please specify prototyping behavior for $filename (see perlxs manual)\n")
1485 unless $ProtoUsed ;
e50aee73
AD
1486&Exit;
1487
93a17b20 1488sub output_init {
ddf6bed1 1489 local($type, $num, $var, $init, $name_printed) = @_;
a0d0e21e 1490 local($arg) = "ST(" . ($num - 1) . ")";
93a17b20 1491
7ad6fb0b 1492 if( $init =~ /^=/ ) {
ddf6bed1
IZ
1493 if ($name_printed) {
1494 eval qq/print " $init\\n"/;
1495 } else {
1496 eval qq/print "\\t$var $init\\n"/;
1497 }
7ad6fb0b
TM
1498 warn $@ if $@;
1499 } else {
1500 if( $init =~ s/^\+// && $num ) {
ddf6bed1
IZ
1501 &generate_init($type, $num, $var, $name_printed);
1502 } elsif ($name_printed) {
1503 print ";\n";
1504 $init =~ s/^;//;
7ad6fb0b
TM
1505 } else {
1506 eval qq/print "\\t$var;\\n"/;
1507 warn $@ if $@;
1508 $init =~ s/^;//;
1509 }
1510 $deferred .= eval qq/"\\n\\t$init\\n"/;
1511 warn $@ if $@;
1512 }
93a17b20
LW
1513}
1514
c2960299
AD
1515sub Warn
1516{
1517 # work out the line number
1518 my $line_no = $line_no[@line_no - @line -1] ;
1519
1520 print STDERR "@_ in $filename, line $line_no\n" ;
1521}
1522
1523sub blurt
1524{
1525 Warn @_ ;
1526 $errors ++
1527}
1528
1529sub death
1530{
1531 Warn @_ ;
1532 exit 1 ;
1533}
8990e307 1534
93a17b20 1535sub generate_init {
2304df62 1536 local($type, $num, $var) = @_;
a0d0e21e 1537 local($arg) = "ST(" . ($num - 1) . ")";
2304df62
AD
1538 local($argoff) = $num - 1;
1539 local($ntype);
1540 local($tk);
93a17b20 1541
f06db76b 1542 $type = TidyType($type) ;
c2960299
AD
1543 blurt("Error: '$type' not in typemap"), return
1544 unless defined($type_kind{$type});
1545
2304df62 1546 ($ntype = $type) =~ s/\s*\*/Ptr/g;
ea5e7566 1547 $ntype =~ s/^\s*const\b\s*//;
8e07c86e 1548 ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//;
2304df62
AD
1549 $tk = $type_kind{$type};
1550 $tk =~ s/OBJ$/REF/ if $func_name =~ /DESTROY$/;
8e07c86e 1551 $type =~ tr/:/_/;
615ca1f4 1552 blurt("Error: No INPUT definition for type '$type', typekind '$type_kind{$type}' found"), return
c2960299 1553 unless defined $input_expr{$tk} ;
2304df62
AD
1554 $expr = $input_expr{$tk};
1555 if ($expr =~ /DO_ARRAY_ELEM/) {
c2960299
AD
1556 blurt("Error: '$subtype' not in typemap"), return
1557 unless defined($type_kind{$subtype});
615ca1f4 1558 blurt("Error: No INPUT definition for type '$subtype', typekind '$type_kind{$subtype}' found"), return
c2960299 1559 unless defined $input_expr{$type_kind{$subtype}} ;
2304df62
AD
1560 $subexpr = $input_expr{$type_kind{$subtype}};
1561 $subexpr =~ s/ntype/subtype/g;
1562 $subexpr =~ s/\$arg/ST(ix_$var)/g;
1563 $subexpr =~ s/\n\t/\n\t\t/g;
93d3b392 1564 $subexpr =~ s/is not of (.*\")/[arg %d] is not of $1, ix_$var + 1/g;
a0d0e21e 1565 $subexpr =~ s/\$var/${var}[ix_$var - $argoff]/;
2304df62
AD
1566 $expr =~ s/DO_ARRAY_ELEM/$subexpr/;
1567 }
db3b9414
PP
1568 if ($expr =~ m#/\*.*scope.*\*/#i) { # "scope" in C comments
1569 $ScopeThisXSUB = 1;
1570 }
2304df62
AD
1571 if (defined($defaults{$var})) {
1572 $expr =~ s/(\t+)/$1 /g;
1573 $expr =~ s/ /\t/g;
ddf6bed1
IZ
1574 if ($name_printed) {
1575 print ";\n";
1576 } else {
1577 eval qq/print "\\t$var;\\n"/;
1578 warn $@ if $@;
1579 }
a104f515 1580 if ($defaults{$var} eq 'NO_INIT') {
4628e4f8
GS
1581 $deferred .= eval qq/"\\n\\tif (items >= $num) {\\n$expr;\\n\\t}\\n"/;
1582 } else {
1583 $deferred .= eval qq/"\\n\\tif (items < $num)\\n\\t $var = $defaults{$var};\\n\\telse {\\n$expr;\\n\\t}\\n"/;
1584 }
7ad6fb0b 1585 warn $@ if $@;
db3b9414 1586 } elsif ($ScopeThisXSUB or $expr !~ /^\t\$var =/) {
ddf6bed1
IZ
1587 if ($name_printed) {
1588 print ";\n";
1589 } else {
1590 eval qq/print "\\t$var;\\n"/;
1591 warn $@ if $@;
1592 }
2304df62 1593 $deferred .= eval qq/"\\n$expr;\\n"/;
7ad6fb0b 1594 warn $@ if $@;
2304df62 1595 } else {
ddf6bed1
IZ
1596 die "panic: do not know how to handle this branch for function pointers"
1597 if $name_printed;
2304df62 1598 eval qq/print "$expr;\\n"/;
7ad6fb0b 1599 warn $@ if $@;
2304df62 1600 }
93a17b20
LW
1601}
1602
1603sub generate_output {
f8b8e0a4 1604 local($type, $num, $var, $do_setmagic, $do_push) = @_;
a0d0e21e 1605 local($arg) = "ST(" . ($num - ($num != 0)) . ")";
2304df62
AD
1606 local($argoff) = $num - 1;
1607 local($ntype);
93a17b20 1608
f06db76b 1609 $type = TidyType($type) ;
2304df62 1610 if ($type =~ /^array\(([^,]*),(.*)\)/) {
4bd3d083 1611 print "\tsv_setpvn($arg, (char *)$var, $2 * sizeof($1));\n";
ef50df4b 1612 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
2304df62 1613 } else {
f06db76b 1614 blurt("Error: '$type' not in typemap"), return
2304df62 1615 unless defined($type_kind{$type});
615ca1f4 1616 blurt("Error: No OUTPUT definition for type '$type', typekind '$type_kind{$type}' found"), return
c2960299 1617 unless defined $output_expr{$type_kind{$type}} ;
2304df62
AD
1618 ($ntype = $type) =~ s/\s*\*/Ptr/g;
1619 $ntype =~ s/\(\)//g;
8e07c86e 1620 ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//;
2304df62
AD
1621 $expr = $output_expr{$type_kind{$type}};
1622 if ($expr =~ /DO_ARRAY_ELEM/) {
c2960299
AD
1623 blurt("Error: '$subtype' not in typemap"), return
1624 unless defined($type_kind{$subtype});
615ca1f4 1625 blurt("Error: No OUTPUT definition for type '$subtype', typekind '$type_kind{$subtype}' found"), return
c2960299 1626 unless defined $output_expr{$type_kind{$subtype}} ;
2304df62
AD
1627 $subexpr = $output_expr{$type_kind{$subtype}};
1628 $subexpr =~ s/ntype/subtype/g;
1629 $subexpr =~ s/\$arg/ST(ix_$var)/g;
1630 $subexpr =~ s/\$var/${var}[ix_$var]/g;
1631 $subexpr =~ s/\n\t/\n\t\t/g;
1632 $expr =~ s/DO_ARRAY_ELEM\n/$subexpr/;
a0d0e21e 1633 eval "print qq\a$expr\a";
7ad6fb0b 1634 warn $@ if $@;
ef50df4b 1635 print "\t\tSvSETMAGIC(ST(ix_$var));\n" if $do_setmagic;
2304df62 1636 }
a0d0e21e 1637 elsif ($var eq 'RETVAL') {
a2baab1c
IZ
1638 if ($expr =~ /^\t\$arg = new/) {
1639 # We expect that $arg has refcnt 1, so we need to
1640 # mortalize it.
a0d0e21e 1641 eval "print qq\a$expr\a";
7ad6fb0b 1642 warn $@ if $@;
f8b8e0a4
GS
1643 print "\tsv_2mortal(ST($num));\n";
1644 print "\tSvSETMAGIC(ST($num));\n" if $do_setmagic;
93a17b20 1645 }
a2baab1c
IZ
1646 elsif ($expr =~ /^\s*\$arg\s*=/) {
1647 # We expect that $arg has refcnt >=1, so we need
d689ffdd 1648 # to mortalize it!
a2baab1c 1649 eval "print qq\a$expr\a";
7ad6fb0b 1650 warn $@ if $@;
d689ffdd 1651 print "\tsv_2mortal(ST(0));\n";
ef50df4b 1652 print "\tSvSETMAGIC(ST(0));\n" if $do_setmagic;
a2baab1c 1653 }
2304df62 1654 else {
a2baab1c
IZ
1655 # Just hope that the entry would safely write it
1656 # over an already mortalized value. By
1657 # coincidence, something like $arg = &sv_undef
1658 # works too.
8990e307 1659 print "\tST(0) = sv_newmortal();\n";
a0d0e21e 1660 eval "print qq\a$expr\a";
7ad6fb0b 1661 warn $@ if $@;
ef50df4b 1662 # new mortals don't have set magic
463ee0b2 1663 }
2304df62 1664 }
f8b8e0a4
GS
1665 elsif ($do_push) {
1666 print "\tPUSHs(sv_newmortal());\n";
1667 $arg = "ST($num)";
1668 eval "print qq\a$expr\a";
1669 warn $@ if $@;
1670 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
1671 }
a0d0e21e
LW
1672 elsif ($arg =~ /^ST\(\d+\)$/) {
1673 eval "print qq\a$expr\a";
7ad6fb0b 1674 warn $@ if $@;
ef50df4b 1675 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
a0d0e21e 1676 }
2304df62 1677 }
93a17b20
LW
1678}
1679
1680sub map_type {
ddf6bed1 1681 my($type, $varname) = @_;
93a17b20 1682
8e07c86e
AD
1683 $type =~ tr/:/_/;
1684 $type =~ s/^array\(([^,]*),(.*)\).*/$1 */s;
ddf6bed1
IZ
1685 if ($varname) {
1686 if ($varname && $type =~ / \( \s* \* (?= \s* \) ) /xg) {
1687 (substr $type, pos $type, 0) = " $varname ";
1688 } else {
1689 $type .= "\t$varname";
1690 }
1691 }
8e07c86e 1692 $type;
93a17b20 1693}
8990e307 1694
e50aee73
AD
1695
1696sub Exit {
ff0cee69
PP
1697# If this is VMS, the exit status has meaning to the shell, so we
1698# use a predictable value (SS$_Normal or SS$_Abort) rather than an
1699# arbitrary number.
1700# exit ($Is_VMS ? ($errors ? 44 : 1) : $errors) ;
1701 exit ($errors ? 1 : 0);
e50aee73 1702}