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1 | #!./miniperl |
2 | ||
3 | =head1 NAME | |
4 | ||
5 | xsubpp - compiler to convert Perl XS code into C code | |
6 | ||
7 | =head1 SYNOPSIS | |
8 | ||
9 | B<xsubpp> [B<-v>] [B<-C++>] [B<-csuffix csuffix>] [B<-except>] [B<-s pattern>] [B<-prototypes>] [B<-noversioncheck>] [B<-nolinenumbers>] [B<-nooptimize>] [B<-typemap typemap>] ... file.xs | |
10 | ||
11 | =head1 DESCRIPTION | |
12 | ||
13 | This compiler is typically run by the makefiles created by L<ExtUtils::MakeMaker>. | |
14 | ||
15 | I<xsubpp> will compile XS code into C code by embedding the constructs | |
16 | necessary to let C functions manipulate Perl values and creates the glue | |
17 | necessary to let Perl access those functions. The compiler uses typemaps to | |
18 | determine how to map C function parameters and variables to Perl values. | |
19 | ||
20 | The compiler will search for typemap files called I<typemap>. It will use | |
21 | the following search path to find default typemaps, with the rightmost | |
22 | typemap taking precedence. | |
23 | ||
24 | ../../../typemap:../../typemap:../typemap:typemap | |
25 | ||
26 | =head1 OPTIONS | |
27 | ||
28 | Note that the C<XSOPT> MakeMaker option may be used to add these options to | |
29 | any makefiles generated by MakeMaker. | |
30 | ||
31 | =over 5 | |
32 | ||
33 | =item B<-C++> | |
34 | ||
35 | Adds ``extern "C"'' to the C code. | |
36 | ||
37 | =item B<-csuffix csuffix> | |
38 | ||
39 | Set the suffix used for the generated C or C++ code. Defaults to '.c' | |
40 | (even with B<-C++>), but some platforms might want to have e.g. '.cpp'. | |
41 | Don't forget the '.' from the front. | |
42 | ||
43 | =item B<-hiertype> | |
44 | ||
45 | Retains '::' in type names so that C++ hierachical types can be mapped. | |
46 | ||
47 | =item B<-except> | |
48 | ||
49 | Adds exception handling stubs to the C code. | |
50 | ||
51 | =item B<-typemap typemap> | |
52 | ||
53 | Indicates that a user-supplied typemap should take precedence over the | |
54 | default typemaps. This option may be used multiple times, with the last | |
55 | typemap having the highest precedence. | |
56 | ||
57 | =item B<-v> | |
58 | ||
59 | Prints the I<xsubpp> version number to standard output, then exits. | |
60 | ||
61 | =item B<-prototypes> | |
62 | ||
63 | By default I<xsubpp> will not automatically generate prototype code for | |
64 | all xsubs. This flag will enable prototypes. | |
65 | ||
66 | =item B<-noversioncheck> | |
67 | ||
68 | Disables the run time test that determines if the object file (derived | |
69 | from the C<.xs> file) and the C<.pm> files have the same version | |
70 | number. | |
71 | ||
72 | =item B<-nolinenumbers> | |
73 | ||
74 | Prevents the inclusion of `#line' directives in the output. | |
75 | ||
76 | =item B<-nooptimize> | |
77 | ||
78 | Disables certain optimizations. The only optimization that is currently | |
79 | affected is the use of I<target>s by the output C code (see L<perlguts>). | |
80 | This may significantly slow down the generated code, but this is the way | |
81 | B<xsubpp> of 5.005 and earlier operated. | |
82 | ||
83 | =item B<-noinout> | |
84 | ||
85 | Disable recognition of C<IN>, C<OUT_LIST> and C<INOUT_LIST> declarations. | |
86 | ||
87 | =item B<-noargtypes> | |
88 | ||
89 | Disable recognition of ANSI-like descriptions of function signature. | |
90 | ||
91 | =back | |
92 | ||
93 | =head1 ENVIRONMENT | |
94 | ||
95 | No environment variables are used. | |
96 | ||
97 | =head1 AUTHOR | |
98 | ||
99 | Larry Wall | |
100 | ||
101 | =head1 MODIFICATION HISTORY | |
102 | ||
103 | See the file F<changes.pod>. | |
104 | ||
105 | =head1 SEE ALSO | |
106 | ||
107 | perl(1), perlxs(1), perlxstut(1) | |
108 | ||
109 | =cut | |
110 | ||
111 | require 5.002; | |
112 | use Cwd; | |
113 | use vars qw($cplusplus $hiertype); | |
114 | use vars '%v'; | |
115 | ||
116 | use Config; | |
117 | ||
118 | sub Q ; | |
119 | ||
120 | # Global Constants | |
121 | ||
122 | $XSUBPP_version = "1.9508"; | |
123 | ||
124 | my ($Is_VMS, $SymSet); | |
125 | if ($^O eq 'VMS') { | |
126 | $Is_VMS = 1; | |
127 | # Establish set of global symbols with max length 28, since xsubpp | |
128 | # will later add the 'XS_' prefix. | |
129 | require ExtUtils::XSSymSet; | |
130 | $SymSet = new ExtUtils::XSSymSet 28; | |
131 | } | |
132 | ||
133 | $FH = 'File0000' ; | |
134 | ||
135 | $usage = "Usage: xsubpp [-v] [-C++] [-csuffix csuffix] [-except] [-prototypes] [-noversioncheck] [-nolinenumbers] [-nooptimize] [-noinout] [-noargtypes] [-s pattern] [-typemap typemap]... file.xs\n"; | |
136 | ||
137 | $proto_re = "[" . quotemeta('\$%&*@;[]') . "]" ; | |
138 | ||
139 | $except = ""; | |
140 | $WantPrototypes = -1 ; | |
141 | $WantVersionChk = 1 ; | |
142 | $ProtoUsed = 0 ; | |
143 | $WantLineNumbers = 1 ; | |
144 | $WantOptimize = 1 ; | |
145 | $Overload = 0; | |
146 | $Fallback = 'PL_sv_undef'; | |
147 | ||
148 | my $process_inout = 1; | |
149 | my $process_argtypes = 1; | |
150 | my $csuffix = '.c'; | |
151 | ||
152 | SWITCH: while (@ARGV and $ARGV[0] =~ /^-./) { | |
153 | $flag = shift @ARGV; | |
154 | $flag =~ s/^-// ; | |
155 | $spat = quotemeta shift, next SWITCH if $flag eq 's'; | |
156 | $cplusplus = 1, next SWITCH if $flag eq 'C++'; | |
157 | $csuffix = shift, next SWITCH if $flag eq 'csuffix'; | |
158 | $hiertype = 1, next SWITCH if $flag eq 'hiertype'; | |
159 | $WantPrototypes = 0, next SWITCH if $flag eq 'noprototypes'; | |
160 | $WantPrototypes = 1, next SWITCH if $flag eq 'prototypes'; | |
161 | $WantVersionChk = 0, next SWITCH if $flag eq 'noversioncheck'; | |
162 | $WantVersionChk = 1, next SWITCH if $flag eq 'versioncheck'; | |
163 | # XXX left this in for compat | |
164 | next SWITCH if $flag eq 'object_capi'; | |
165 | $except = " TRY", next SWITCH if $flag eq 'except'; | |
166 | push(@tm,shift), next SWITCH if $flag eq 'typemap'; | |
167 | $WantLineNumbers = 0, next SWITCH if $flag eq 'nolinenumbers'; | |
168 | $WantLineNumbers = 1, next SWITCH if $flag eq 'linenumbers'; | |
169 | $WantOptimize = 0, next SWITCH if $flag eq 'nooptimize'; | |
170 | $WantOptimize = 1, next SWITCH if $flag eq 'optimize'; | |
171 | $process_inout = 0, next SWITCH if $flag eq 'noinout'; | |
172 | $process_inout = 1, next SWITCH if $flag eq 'inout'; | |
173 | $process_argtypes = 0, next SWITCH if $flag eq 'noargtypes'; | |
174 | $process_argtypes = 1, next SWITCH if $flag eq 'argtypes'; | |
175 | (print "xsubpp version $XSUBPP_version\n"), exit | |
176 | if $flag eq 'v'; | |
177 | die $usage; | |
178 | } | |
179 | if ($WantPrototypes == -1) | |
180 | { $WantPrototypes = 0} | |
181 | else | |
182 | { $ProtoUsed = 1 } | |
183 | ||
184 | ||
185 | @ARGV == 1 or die $usage; | |
186 | ($dir, $filename) = $ARGV[0] =~ m#(.*)/(.*)# | |
187 | or ($dir, $filename) = $ARGV[0] =~ m#(.*)\\(.*)# | |
188 | or ($dir, $filename) = $ARGV[0] =~ m#(.*[>\]])(.*)# | |
189 | or ($dir, $filename) = ('.', $ARGV[0]); | |
190 | chdir($dir); | |
191 | $pwd = cwd(); | |
192 | ||
193 | ++ $IncludedFiles{$ARGV[0]} ; | |
194 | ||
195 | my(@XSStack) = ({type => 'none'}); # Stack of conditionals and INCLUDEs | |
196 | my($XSS_work_idx, $cpp_next_tmp) = (0, "XSubPPtmpAAAA"); | |
197 | ||
198 | ||
199 | sub TrimWhitespace | |
200 | { | |
201 | $_[0] =~ s/^\s+|\s+$//go ; | |
202 | } | |
203 | ||
204 | sub TidyType | |
205 | { | |
206 | local ($_) = @_ ; | |
207 | ||
208 | # rationalise any '*' by joining them into bunches and removing whitespace | |
209 | s#\s*(\*+)\s*#$1#g; | |
210 | s#(\*+)# $1 #g ; | |
211 | ||
212 | # change multiple whitespace into a single space | |
213 | s/\s+/ /g ; | |
214 | ||
215 | # trim leading & trailing whitespace | |
216 | TrimWhitespace($_) ; | |
217 | ||
218 | $_ ; | |
219 | } | |
220 | ||
221 | $typemap = shift @ARGV; | |
222 | foreach $typemap (@tm) { | |
223 | die "Can't find $typemap in $pwd\n" unless -r $typemap; | |
224 | } | |
225 | unshift @tm, qw(../../../../lib/ExtUtils/typemap ../../../lib/ExtUtils/typemap | |
226 | ../../lib/ExtUtils/typemap ../../../typemap ../../typemap | |
227 | ../typemap typemap); | |
228 | foreach $typemap (@tm) { | |
229 | next unless -f $typemap ; | |
230 | # skip directories, binary files etc. | |
231 | warn("Warning: ignoring non-text typemap file '$typemap'\n"), next | |
232 | unless -T $typemap ; | |
233 | open(TYPEMAP, $typemap) | |
234 | or warn ("Warning: could not open typemap file '$typemap': $!\n"), next; | |
235 | $mode = 'Typemap'; | |
236 | $junk = "" ; | |
237 | $current = \$junk; | |
238 | while (<TYPEMAP>) { | |
239 | next if /^\s*#/; | |
240 | my $line_no = $. + 1; | |
241 | if (/^INPUT\s*$/) { $mode = 'Input'; $current = \$junk; next; } | |
242 | if (/^OUTPUT\s*$/) { $mode = 'Output'; $current = \$junk; next; } | |
243 | if (/^TYPEMAP\s*$/) { $mode = 'Typemap'; $current = \$junk; next; } | |
244 | if ($mode eq 'Typemap') { | |
245 | chomp; | |
246 | my $line = $_ ; | |
247 | TrimWhitespace($_) ; | |
248 | # skip blank lines and comment lines | |
249 | next if /^$/ or /^#/ ; | |
250 | my($type,$kind, $proto) = /^\s*(.*?\S)\s+(\S+)\s*($proto_re*)\s*$/ or | |
251 | warn("Warning: File '$typemap' Line $. '$line' TYPEMAP entry needs 2 or 3 columns\n"), next; | |
252 | $type = TidyType($type) ; | |
253 | $type_kind{$type} = $kind ; | |
254 | # prototype defaults to '$' | |
255 | $proto = "\$" unless $proto ; | |
256 | warn("Warning: File '$typemap' Line $. '$line' Invalid prototype '$proto'\n") | |
257 | unless ValidProtoString($proto) ; | |
258 | $proto_letter{$type} = C_string($proto) ; | |
259 | } | |
260 | elsif (/^\s/) { | |
261 | $$current .= $_; | |
262 | } | |
263 | elsif ($mode eq 'Input') { | |
264 | s/\s+$//; | |
265 | $input_expr{$_} = ''; | |
266 | $current = \$input_expr{$_}; | |
267 | } | |
268 | else { | |
269 | s/\s+$//; | |
270 | $output_expr{$_} = ''; | |
271 | $current = \$output_expr{$_}; | |
272 | } | |
273 | } | |
274 | close(TYPEMAP); | |
275 | } | |
276 | ||
277 | foreach $key (keys %input_expr) { | |
278 | $input_expr{$key} =~ s/;*\s+\z//; | |
279 | } | |
280 | ||
281 | $bal = qr[(?:(?>[^()]+)|\((??{ $bal })\))*]; # ()-balanced | |
282 | $cast = qr[(?:\(\s*SV\s*\*\s*\)\s*)?]; # Optional (SV*) cast | |
283 | $size = qr[,\s* (??{ $bal }) ]x; # Third arg (to setpvn) | |
284 | ||
285 | foreach $key (keys %output_expr) { | |
286 | use re 'eval'; | |
287 | ||
288 | my ($t, $with_size, $arg, $sarg) = | |
289 | ($output_expr{$key} =~ | |
290 | m[^ \s+ sv_set ( [iunp] ) v (n)? # Type, is_setpvn | |
291 | \s* \( \s* $cast \$arg \s* , | |
292 | \s* ( (??{ $bal }) ) # Set from | |
293 | ( (??{ $size }) )? # Possible sizeof set-from | |
294 | \) \s* ; \s* $ | |
295 | ]x); | |
296 | $targetable{$key} = [$t, $with_size, $arg, $sarg] if $t; | |
297 | } | |
298 | ||
299 | $END = "!End!\n\n"; # "impossible" keyword (multiple newline) | |
300 | ||
301 | # Match an XS keyword | |
302 | $BLOCK_re= '\s*(' . join('|', qw( | |
303 | REQUIRE BOOT CASE PREINIT INPUT INIT CODE PPCODE OUTPUT | |
304 | CLEANUP ALIAS ATTRS PROTOTYPES PROTOTYPE VERSIONCHECK INCLUDE | |
305 | SCOPE INTERFACE INTERFACE_MACRO C_ARGS POSTCALL OVERLOAD FALLBACK | |
306 | )) . "|$END)\\s*:"; | |
307 | ||
308 | # Input: ($_, @line) == unparsed input. | |
309 | # Output: ($_, @line) == (rest of line, following lines). | |
310 | # Return: the matched keyword if found, otherwise 0 | |
311 | sub check_keyword { | |
312 | $_ = shift(@line) while !/\S/ && @line; | |
313 | s/^(\s*)($_[0])\s*:\s*(?:#.*)?/$1/s && $2; | |
314 | } | |
315 | ||
316 | my ($C_group_rex, $C_arg); | |
317 | # Group in C (no support for comments or literals) | |
318 | $C_group_rex = qr/ [({\[] | |
319 | (?: (?> [^()\[\]{}]+ ) | (??{ $C_group_rex }) )* | |
320 | [)}\]] /x ; | |
321 | # Chunk in C without comma at toplevel (no comments): | |
322 | $C_arg = qr/ (?: (?> [^()\[\]{},"']+ ) | |
323 | | (??{ $C_group_rex }) | |
324 | | " (?: (?> [^\\"]+ ) | |
325 | | \\. | |
326 | )* " # String literal | |
327 | | ' (?: (?> [^\\']+ ) | \\. )* ' # Char literal | |
328 | )* /xs; | |
329 | ||
330 | if ($WantLineNumbers) { | |
331 | { | |
332 | package xsubpp::counter; | |
333 | sub TIEHANDLE { | |
334 | my ($class, $cfile) = @_; | |
335 | my $buf = ""; | |
336 | $SECTION_END_MARKER = "#line --- \"$cfile\""; | |
337 | $line_no = 1; | |
338 | bless \$buf; | |
339 | } | |
340 | ||
341 | sub PRINT { | |
342 | my $self = shift; | |
343 | for (@_) { | |
344 | $$self .= $_; | |
345 | while ($$self =~ s/^([^\n]*\n)//) { | |
346 | my $line = $1; | |
347 | ++ $line_no; | |
348 | $line =~ s|^\#line\s+---(?=\s)|#line $line_no|; | |
349 | print STDOUT $line; | |
350 | } | |
351 | } | |
352 | } | |
353 | ||
354 | sub PRINTF { | |
355 | my $self = shift; | |
356 | my $fmt = shift; | |
357 | $self->PRINT(sprintf($fmt, @_)); | |
358 | } | |
359 | ||
360 | sub DESTROY { | |
361 | # Not necessary if we're careful to end with a "\n" | |
362 | my $self = shift; | |
363 | print STDOUT $$self; | |
364 | } | |
365 | } | |
366 | ||
367 | my $cfile = $filename; | |
368 | $cfile =~ s/\.xs$/$csuffix/i or $cfile .= $csuffix; | |
369 | tie(*PSEUDO_STDOUT, 'xsubpp::counter', $cfile); | |
370 | select PSEUDO_STDOUT; | |
371 | } | |
372 | ||
373 | sub print_section { | |
374 | # the "do" is required for right semantics | |
375 | do { $_ = shift(@line) } while !/\S/ && @line; | |
376 | ||
377 | print("#line ", $line_no[@line_no - @line -1], " \"$filename\"\n") | |
378 | if $WantLineNumbers && !/^\s*#\s*line\b/ && !/^#if XSubPPtmp/; | |
379 | for (; defined($_) && !/^$BLOCK_re/o; $_ = shift(@line)) { | |
380 | print "$_\n"; | |
381 | } | |
382 | print "$xsubpp::counter::SECTION_END_MARKER\n" if $WantLineNumbers; | |
383 | } | |
384 | ||
385 | sub merge_section { | |
386 | my $in = ''; | |
387 | ||
388 | while (!/\S/ && @line) { | |
389 | $_ = shift(@line); | |
390 | } | |
391 | ||
392 | for (; defined($_) && !/^$BLOCK_re/o; $_ = shift(@line)) { | |
393 | $in .= "$_\n"; | |
394 | } | |
395 | chomp $in; | |
396 | return $in; | |
397 | } | |
398 | ||
399 | sub process_keyword($) | |
400 | { | |
401 | my($pattern) = @_ ; | |
402 | my $kwd ; | |
403 | ||
404 | &{"${kwd}_handler"}() | |
405 | while $kwd = check_keyword($pattern) ; | |
406 | } | |
407 | ||
408 | sub CASE_handler { | |
409 | blurt ("Error: `CASE:' after unconditional `CASE:'") | |
410 | if $condnum && $cond eq ''; | |
411 | $cond = $_; | |
412 | TrimWhitespace($cond); | |
413 | print " ", ($condnum++ ? " else" : ""), ($cond ? " if ($cond)\n" : "\n"); | |
414 | $_ = '' ; | |
415 | } | |
416 | ||
417 | sub INPUT_handler { | |
418 | for (; !/^$BLOCK_re/o; $_ = shift(@line)) { | |
419 | last if /^\s*NOT_IMPLEMENTED_YET/; | |
420 | next unless /\S/; # skip blank lines | |
421 | ||
422 | TrimWhitespace($_) ; | |
423 | my $line = $_ ; | |
424 | ||
425 | # remove trailing semicolon if no initialisation | |
426 | s/\s*;$//g unless /[=;+].*\S/ ; | |
427 | ||
428 | # Process the length(foo) declarations | |
429 | if (s/^([^=]*)\blength\(\s*(\w+)\s*\)\s*$/$1 XSauto_length_of_$2=NO_INIT/x) { | |
430 | print "\tSTRLEN\tSTRLEN_length_of_$2;\n"; | |
431 | $lengthof{$2} = $name; | |
432 | # $islengthof{$name} = $1; | |
433 | $deferred .= "\n\tXSauto_length_of_$2 = STRLEN_length_of_$2;"; | |
434 | } | |
435 | ||
436 | # check for optional initialisation code | |
437 | my $var_init = '' ; | |
438 | $var_init = $1 if s/\s*([=;+].*)$//s ; | |
439 | $var_init =~ s/"/\\"/g; | |
440 | ||
441 | s/\s+/ /g; | |
442 | my ($var_type, $var_addr, $var_name) = /^(.*?[^&\s])\s*(\&?)\s*\b(\w+)$/s | |
443 | or blurt("Error: invalid argument declaration '$line'"), next; | |
444 | ||
445 | # Check for duplicate definitions | |
446 | blurt ("Error: duplicate definition of argument '$var_name' ignored"), next | |
447 | if $arg_list{$var_name}++ | |
448 | or defined $argtype_seen{$var_name} and not $processing_arg_with_types; | |
449 | ||
450 | $thisdone |= $var_name eq "THIS"; | |
451 | $retvaldone |= $var_name eq "RETVAL"; | |
452 | $var_types{$var_name} = $var_type; | |
453 | # XXXX This check is a safeguard against the unfinished conversion of | |
454 | # generate_init(). When generate_init() is fixed, | |
455 | # one can use 2-args map_type() unconditionally. | |
456 | if ($var_type =~ / \( \s* \* \s* \) /x) { | |
457 | # Function pointers are not yet supported with &output_init! | |
458 | print "\t" . &map_type($var_type, $var_name); | |
459 | $name_printed = 1; | |
460 | } else { | |
461 | print "\t" . &map_type($var_type); | |
462 | $name_printed = 0; | |
463 | } | |
464 | $var_num = $args_match{$var_name}; | |
465 | ||
466 | $proto_arg[$var_num] = ProtoString($var_type) | |
467 | if $var_num ; | |
468 | $func_args =~ s/\b($var_name)\b/&$1/ if $var_addr; | |
469 | if ($var_init =~ /^[=;]\s*NO_INIT\s*;?\s*$/ | |
470 | or $in_out{$var_name} and $in_out{$var_name} =~ /^OUT/ | |
471 | and $var_init !~ /\S/) { | |
472 | if ($name_printed) { | |
473 | print ";\n"; | |
474 | } else { | |
475 | print "\t$var_name;\n"; | |
476 | } | |
477 | } elsif ($var_init =~ /\S/) { | |
478 | &output_init($var_type, $var_num, $var_name, $var_init, $name_printed); | |
479 | } elsif ($var_num) { | |
480 | # generate initialization code | |
481 | &generate_init($var_type, $var_num, $var_name, $name_printed); | |
482 | } else { | |
483 | print ";\n"; | |
484 | } | |
485 | } | |
486 | } | |
487 | ||
488 | sub OUTPUT_handler { | |
489 | for (; !/^$BLOCK_re/o; $_ = shift(@line)) { | |
490 | next unless /\S/; | |
491 | if (/^\s*SETMAGIC\s*:\s*(ENABLE|DISABLE)\s*/) { | |
492 | $DoSetMagic = ($1 eq "ENABLE" ? 1 : 0); | |
493 | next; | |
494 | } | |
495 | my ($outarg, $outcode) = /^\s*(\S+)\s*(.*?)\s*$/s ; | |
496 | blurt ("Error: duplicate OUTPUT argument '$outarg' ignored"), next | |
497 | if $outargs{$outarg} ++ ; | |
498 | if (!$gotRETVAL and $outarg eq 'RETVAL') { | |
499 | # deal with RETVAL last | |
500 | $RETVAL_code = $outcode ; | |
501 | $gotRETVAL = 1 ; | |
502 | next ; | |
503 | } | |
504 | blurt ("Error: OUTPUT $outarg not an argument"), next | |
505 | unless defined($args_match{$outarg}); | |
506 | blurt("Error: No input definition for OUTPUT argument '$outarg' - ignored"), next | |
507 | unless defined $var_types{$outarg} ; | |
508 | $var_num = $args_match{$outarg}; | |
509 | if ($outcode) { | |
510 | print "\t$outcode\n"; | |
511 | print "\tSvSETMAGIC(ST(" , $var_num-1 , "));\n" if $DoSetMagic; | |
512 | } else { | |
513 | &generate_output($var_types{$outarg}, $var_num, $outarg, $DoSetMagic); | |
514 | } | |
515 | delete $in_out{$outarg} # No need to auto-OUTPUT | |
516 | if exists $in_out{$outarg} and $in_out{$outarg} =~ /OUT$/; | |
517 | } | |
518 | } | |
519 | ||
520 | sub C_ARGS_handler() { | |
521 | my $in = merge_section(); | |
522 | ||
523 | TrimWhitespace($in); | |
524 | $func_args = $in; | |
525 | } | |
526 | ||
527 | sub INTERFACE_MACRO_handler() { | |
528 | my $in = merge_section(); | |
529 | ||
530 | TrimWhitespace($in); | |
531 | if ($in =~ /\s/) { # two | |
532 | ($interface_macro, $interface_macro_set) = split ' ', $in; | |
533 | } else { | |
534 | $interface_macro = $in; | |
535 | $interface_macro_set = 'UNKNOWN_CVT'; # catch later | |
536 | } | |
537 | $interface = 1; # local | |
538 | $Interfaces = 1; # global | |
539 | } | |
540 | ||
541 | sub INTERFACE_handler() { | |
542 | my $in = merge_section(); | |
543 | ||
544 | TrimWhitespace($in); | |
545 | ||
546 | foreach (split /[\s,]+/, $in) { | |
547 | $Interfaces{$_} = $_; | |
548 | } | |
549 | print Q<<"EOF"; | |
550 | # XSFUNCTION = $interface_macro($ret_type,cv,XSANY.any_dptr); | |
551 | EOF | |
552 | $interface = 1; # local | |
553 | $Interfaces = 1; # global | |
554 | } | |
555 | ||
556 | sub CLEANUP_handler() { print_section() } | |
557 | sub PREINIT_handler() { print_section() } | |
558 | sub POSTCALL_handler() { print_section() } | |
559 | sub INIT_handler() { print_section() } | |
560 | ||
561 | sub GetAliases | |
562 | { | |
563 | my ($line) = @_ ; | |
564 | my ($orig) = $line ; | |
565 | my ($alias) ; | |
566 | my ($value) ; | |
567 | ||
568 | # Parse alias definitions | |
569 | # format is | |
570 | # alias = value alias = value ... | |
571 | ||
572 | while ($line =~ s/^\s*([\w:]+)\s*=\s*(\w+)\s*//) { | |
573 | $alias = $1 ; | |
574 | $orig_alias = $alias ; | |
575 | $value = $2 ; | |
576 | ||
577 | # check for optional package definition in the alias | |
578 | $alias = $Packprefix . $alias if $alias !~ /::/ ; | |
579 | ||
580 | # check for duplicate alias name & duplicate value | |
581 | Warn("Warning: Ignoring duplicate alias '$orig_alias'") | |
582 | if defined $XsubAliases{$alias} ; | |
583 | ||
584 | Warn("Warning: Aliases '$orig_alias' and '$XsubAliasValues{$value}' have identical values") | |
585 | if $XsubAliasValues{$value} ; | |
586 | ||
587 | $XsubAliases = 1; | |
588 | $XsubAliases{$alias} = $value ; | |
589 | $XsubAliasValues{$value} = $orig_alias ; | |
590 | } | |
591 | ||
592 | blurt("Error: Cannot parse ALIAS definitions from '$orig'") | |
593 | if $line ; | |
594 | } | |
595 | ||
596 | sub ATTRS_handler () | |
597 | { | |
598 | for (; !/^$BLOCK_re/o; $_ = shift(@line)) { | |
599 | next unless /\S/; | |
600 | TrimWhitespace($_) ; | |
601 | push @Attributes, $_; | |
602 | } | |
603 | } | |
604 | ||
605 | sub ALIAS_handler () | |
606 | { | |
607 | for (; !/^$BLOCK_re/o; $_ = shift(@line)) { | |
608 | next unless /\S/; | |
609 | TrimWhitespace($_) ; | |
610 | GetAliases($_) if $_ ; | |
611 | } | |
612 | } | |
613 | ||
614 | sub OVERLOAD_handler() | |
615 | { | |
616 | for (; !/^$BLOCK_re/o; $_ = shift(@line)) { | |
617 | next unless /\S/; | |
618 | TrimWhitespace($_) ; | |
619 | while ( s/^\s*([\w:"\\)\+\-\*\/\%\<\>\.\&\|\^\!\~\{\}\=]+)\s*//) { | |
620 | $Overload = 1 unless $Overload; | |
621 | my $overload = "$Package\::(".$1 ; | |
622 | push(@InitFileCode, | |
623 | " newXS(\"$overload\", XS_$Full_func_name, file$proto);\n"); | |
624 | } | |
625 | } | |
626 | ||
627 | } | |
628 | ||
629 | sub FALLBACK_handler() | |
630 | { | |
631 | # the rest of the current line should contain either TRUE, | |
632 | # FALSE or UNDEF | |
633 | ||
634 | TrimWhitespace($_) ; | |
635 | my %map = ( | |
636 | TRUE => "PL_sv_yes", 1 => "PL_sv_yes", | |
637 | FALSE => "PL_sv_no", 0 => "PL_sv_no", | |
638 | UNDEF => "PL_sv_undef", | |
639 | ) ; | |
640 | ||
641 | # check for valid FALLBACK value | |
642 | death ("Error: FALLBACK: TRUE/FALSE/UNDEF") unless exists $map{uc $_} ; | |
643 | ||
644 | $Fallback = $map{uc $_} ; | |
645 | } | |
646 | ||
647 | sub REQUIRE_handler () | |
648 | { | |
649 | # the rest of the current line should contain a version number | |
650 | my ($Ver) = $_ ; | |
651 | ||
652 | TrimWhitespace($Ver) ; | |
653 | ||
654 | death ("Error: REQUIRE expects a version number") | |
655 | unless $Ver ; | |
656 | ||
657 | # check that the version number is of the form n.n | |
658 | death ("Error: REQUIRE: expected a number, got '$Ver'") | |
659 | unless $Ver =~ /^\d+(\.\d*)?/ ; | |
660 | ||
661 | death ("Error: xsubpp $Ver (or better) required--this is only $XSUBPP_version.") | |
662 | unless $XSUBPP_version >= $Ver ; | |
663 | } | |
664 | ||
665 | sub VERSIONCHECK_handler () | |
666 | { | |
667 | # the rest of the current line should contain either ENABLE or | |
668 | # DISABLE | |
669 | ||
670 | TrimWhitespace($_) ; | |
671 | ||
672 | # check for ENABLE/DISABLE | |
673 | death ("Error: VERSIONCHECK: ENABLE/DISABLE") | |
674 | unless /^(ENABLE|DISABLE)/i ; | |
675 | ||
676 | $WantVersionChk = 1 if $1 eq 'ENABLE' ; | |
677 | $WantVersionChk = 0 if $1 eq 'DISABLE' ; | |
678 | ||
679 | } | |
680 | ||
681 | sub PROTOTYPE_handler () | |
682 | { | |
683 | my $specified ; | |
684 | ||
685 | death("Error: Only 1 PROTOTYPE definition allowed per xsub") | |
686 | if $proto_in_this_xsub ++ ; | |
687 | ||
688 | for (; !/^$BLOCK_re/o; $_ = shift(@line)) { | |
689 | next unless /\S/; | |
690 | $specified = 1 ; | |
691 | TrimWhitespace($_) ; | |
692 | if ($_ eq 'DISABLE') { | |
693 | $ProtoThisXSUB = 0 | |
694 | } | |
695 | elsif ($_ eq 'ENABLE') { | |
696 | $ProtoThisXSUB = 1 | |
697 | } | |
698 | else { | |
699 | # remove any whitespace | |
700 | s/\s+//g ; | |
701 | death("Error: Invalid prototype '$_'") | |
702 | unless ValidProtoString($_) ; | |
703 | $ProtoThisXSUB = C_string($_) ; | |
704 | } | |
705 | } | |
706 | ||
707 | # If no prototype specified, then assume empty prototype "" | |
708 | $ProtoThisXSUB = 2 unless $specified ; | |
709 | ||
710 | $ProtoUsed = 1 ; | |
711 | ||
712 | } | |
713 | ||
714 | sub SCOPE_handler () | |
715 | { | |
716 | death("Error: Only 1 SCOPE declaration allowed per xsub") | |
717 | if $scope_in_this_xsub ++ ; | |
718 | ||
719 | for (; !/^$BLOCK_re/o; $_ = shift(@line)) { | |
720 | next unless /\S/; | |
721 | TrimWhitespace($_) ; | |
722 | if ($_ =~ /^DISABLE/i) { | |
723 | $ScopeThisXSUB = 0 | |
724 | } | |
725 | elsif ($_ =~ /^ENABLE/i) { | |
726 | $ScopeThisXSUB = 1 | |
727 | } | |
728 | } | |
729 | ||
730 | } | |
731 | ||
732 | sub PROTOTYPES_handler () | |
733 | { | |
734 | # the rest of the current line should contain either ENABLE or | |
735 | # DISABLE | |
736 | ||
737 | TrimWhitespace($_) ; | |
738 | ||
739 | # check for ENABLE/DISABLE | |
740 | death ("Error: PROTOTYPES: ENABLE/DISABLE") | |
741 | unless /^(ENABLE|DISABLE)/i ; | |
742 | ||
743 | $WantPrototypes = 1 if $1 eq 'ENABLE' ; | |
744 | $WantPrototypes = 0 if $1 eq 'DISABLE' ; | |
745 | $ProtoUsed = 1 ; | |
746 | ||
747 | } | |
748 | ||
749 | sub INCLUDE_handler () | |
750 | { | |
751 | # the rest of the current line should contain a valid filename | |
752 | ||
753 | TrimWhitespace($_) ; | |
754 | ||
755 | death("INCLUDE: filename missing") | |
756 | unless $_ ; | |
757 | ||
758 | death("INCLUDE: output pipe is illegal") | |
759 | if /^\s*\|/ ; | |
760 | ||
761 | # simple minded recursion detector | |
762 | death("INCLUDE loop detected") | |
763 | if $IncludedFiles{$_} ; | |
764 | ||
765 | ++ $IncludedFiles{$_} unless /\|\s*$/ ; | |
766 | ||
767 | # Save the current file context. | |
768 | push(@XSStack, { | |
769 | type => 'file', | |
770 | LastLine => $lastline, | |
771 | LastLineNo => $lastline_no, | |
772 | Line => \@line, | |
773 | LineNo => \@line_no, | |
774 | Filename => $filename, | |
775 | Handle => $FH, | |
776 | }) ; | |
777 | ||
778 | ++ $FH ; | |
779 | ||
780 | # open the new file | |
781 | open ($FH, "$_") or death("Cannot open '$_': $!") ; | |
782 | ||
783 | print Q<<"EOF" ; | |
784 | # | |
785 | #/* INCLUDE: Including '$_' from '$filename' */ | |
786 | # | |
787 | EOF | |
788 | ||
789 | $filename = $_ ; | |
790 | ||
791 | # Prime the pump by reading the first | |
792 | # non-blank line | |
793 | ||
794 | # skip leading blank lines | |
795 | while (<$FH>) { | |
796 | last unless /^\s*$/ ; | |
797 | } | |
798 | ||
799 | $lastline = $_ ; | |
800 | $lastline_no = $. ; | |
801 | ||
802 | } | |
803 | ||
804 | sub PopFile() | |
805 | { | |
806 | return 0 unless $XSStack[-1]{type} eq 'file' ; | |
807 | ||
808 | my $data = pop @XSStack ; | |
809 | my $ThisFile = $filename ; | |
810 | my $isPipe = ($filename =~ /\|\s*$/) ; | |
811 | ||
812 | -- $IncludedFiles{$filename} | |
813 | unless $isPipe ; | |
814 | ||
815 | close $FH ; | |
816 | ||
817 | $FH = $data->{Handle} ; | |
818 | $filename = $data->{Filename} ; | |
819 | $lastline = $data->{LastLine} ; | |
820 | $lastline_no = $data->{LastLineNo} ; | |
821 | @line = @{ $data->{Line} } ; | |
822 | @line_no = @{ $data->{LineNo} } ; | |
823 | ||
824 | if ($isPipe and $? ) { | |
825 | -- $lastline_no ; | |
826 | print STDERR "Error reading from pipe '$ThisFile': $! in $filename, line $lastline_no\n" ; | |
827 | exit 1 ; | |
828 | } | |
829 | ||
830 | print Q<<"EOF" ; | |
831 | # | |
832 | #/* INCLUDE: Returning to '$filename' from '$ThisFile' */ | |
833 | # | |
834 | EOF | |
835 | ||
836 | return 1 ; | |
837 | } | |
838 | ||
839 | sub ValidProtoString ($) | |
840 | { | |
841 | my($string) = @_ ; | |
842 | ||
843 | if ( $string =~ /^$proto_re+$/ ) { | |
844 | return $string ; | |
845 | } | |
846 | ||
847 | return 0 ; | |
848 | } | |
849 | ||
850 | sub C_string ($) | |
851 | { | |
852 | my($string) = @_ ; | |
853 | ||
854 | $string =~ s[\\][\\\\]g ; | |
855 | $string ; | |
856 | } | |
857 | ||
858 | sub ProtoString ($) | |
859 | { | |
860 | my ($type) = @_ ; | |
861 | ||
862 | $proto_letter{$type} or "\$" ; | |
863 | } | |
864 | ||
865 | sub check_cpp { | |
866 | my @cpp = grep(/^\#\s*(?:if|e\w+)/, @line); | |
867 | if (@cpp) { | |
868 | my ($cpp, $cpplevel); | |
869 | for $cpp (@cpp) { | |
870 | if ($cpp =~ /^\#\s*if/) { | |
871 | $cpplevel++; | |
872 | } elsif (!$cpplevel) { | |
873 | Warn("Warning: #else/elif/endif without #if in this function"); | |
874 | print STDERR " (precede it with a blank line if the matching #if is outside the function)\n" | |
875 | if $XSStack[-1]{type} eq 'if'; | |
876 | return; | |
877 | } elsif ($cpp =~ /^\#\s*endif/) { | |
878 | $cpplevel--; | |
879 | } | |
880 | } | |
881 | Warn("Warning: #if without #endif in this function") if $cpplevel; | |
882 | } | |
883 | } | |
884 | ||
885 | ||
886 | sub Q { | |
887 | my($text) = @_; | |
888 | $text =~ s/^#//gm; | |
889 | $text =~ s/\[\[/{/g; | |
890 | $text =~ s/\]\]/}/g; | |
891 | $text; | |
892 | } | |
893 | ||
894 | open($FH, $filename) or die "cannot open $filename: $!\n"; | |
895 | ||
896 | # Identify the version of xsubpp used | |
897 | print <<EOM ; | |
898 | /* | |
899 | * This file was generated automatically by xsubpp version $XSUBPP_version from the | |
900 | * contents of $filename. Do not edit this file, edit $filename instead. | |
901 | * | |
902 | * ANY CHANGES MADE HERE WILL BE LOST! | |
903 | * | |
904 | */ | |
905 | ||
906 | EOM | |
907 | ||
908 | ||
909 | print("#line 1 \"$filename\"\n") | |
910 | if $WantLineNumbers; | |
911 | ||
912 | firstmodule: | |
913 | while (<$FH>) { | |
914 | if (/^=/) { | |
915 | my $podstartline = $.; | |
916 | do { | |
917 | if (/^=cut\s*$/) { | |
918 | # We can't just write out a /* */ comment, as our embedded | |
919 | # POD might itself be in a comment. We can't put a /**/ | |
920 | # comment inside #if 0, as the C standard says that the source | |
921 | # file is decomposed into preprocessing characters in the stage | |
922 | # before preprocessing commands are executed. | |
923 | # I don't want to leave the text as barewords, because the spec | |
924 | # isn't clear whether macros are expanded before or after | |
925 | # preprocessing commands are executed, and someone pathological | |
926 | # may just have defined one of the 3 words as a macro that does | |
927 | # something strange. Multiline strings are illegal in C, so | |
928 | # the "" we write must be a string literal. And they aren't | |
929 | # concatenated until 2 steps later, so we are safe. | |
930 | print("#if 0\n \"Skipped embedded POD.\"\n#endif\n"); | |
931 | printf("#line %d \"$filename\"\n", $. + 1) | |
932 | if $WantLineNumbers; | |
933 | next firstmodule | |
934 | } | |
935 | ||
936 | } while (<$FH>); | |
937 | # At this point $. is at end of file so die won't state the start | |
938 | # of the problem, and as we haven't yet read any lines &death won't | |
939 | # show the correct line in the message either. | |
940 | die ("Error: Unterminated pod in $filename, line $podstartline\n") | |
941 | unless $lastline; | |
942 | } | |
943 | last if ($Module, $Package, $Prefix) = | |
944 | /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/; | |
945 | ||
946 | print $_; | |
947 | } | |
948 | &Exit unless defined $_; | |
949 | ||
950 | print "$xsubpp::counter::SECTION_END_MARKER\n" if $WantLineNumbers; | |
951 | ||
952 | $lastline = $_; | |
953 | $lastline_no = $.; | |
954 | ||
955 | # Read next xsub into @line from ($lastline, <$FH>). | |
956 | sub fetch_para { | |
957 | # parse paragraph | |
958 | death ("Error: Unterminated `#if/#ifdef/#ifndef'") | |
959 | if !defined $lastline && $XSStack[-1]{type} eq 'if'; | |
960 | @line = (); | |
961 | @line_no = () ; | |
962 | return PopFile() if !defined $lastline; | |
963 | ||
964 | if ($lastline =~ | |
965 | /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/) { | |
966 | $Module = $1; | |
967 | $Package = defined($2) ? $2 : ''; # keep -w happy | |
968 | $Prefix = defined($3) ? $3 : ''; # keep -w happy | |
969 | $Prefix = quotemeta $Prefix ; | |
970 | ($Module_cname = $Module) =~ s/\W/_/g; | |
971 | ($Packid = $Package) =~ tr/:/_/; | |
972 | $Packprefix = $Package; | |
973 | $Packprefix .= "::" if $Packprefix ne ""; | |
974 | $lastline = ""; | |
975 | } | |
976 | ||
977 | for(;;) { | |
978 | # Skip embedded PODs | |
979 | while ($lastline =~ /^=/) { | |
980 | while ($lastline = <$FH>) { | |
981 | last if ($lastline =~ /^=cut\s*$/); | |
982 | } | |
983 | death ("Error: Unterminated pod") unless $lastline; | |
984 | $lastline = <$FH>; | |
985 | chomp $lastline; | |
986 | $lastline =~ s/^\s+$//; | |
987 | } | |
988 | if ($lastline !~ /^\s*#/ || | |
989 | # CPP directives: | |
990 | # ANSI: if ifdef ifndef elif else endif define undef | |
991 | # line error pragma | |
992 | # gcc: warning include_next | |
993 | # obj-c: import | |
994 | # others: ident (gcc notes that some cpps have this one) | |
995 | $lastline =~ /^#[ \t]*(?:(?:if|ifn?def|elif|else|endif|define|undef|pragma|error|warning|line\s+\d+|ident)\b|(?:include(?:_next)?|import)\s*["<].*[>"])/) { | |
996 | last if $lastline =~ /^\S/ && @line && $line[-1] eq ""; | |
997 | push(@line, $lastline); | |
998 | push(@line_no, $lastline_no) ; | |
999 | } | |
1000 | ||
1001 | # Read next line and continuation lines | |
1002 | last unless defined($lastline = <$FH>); | |
1003 | $lastline_no = $.; | |
1004 | my $tmp_line; | |
1005 | $lastline .= $tmp_line | |
1006 | while ($lastline =~ /\\$/ && defined($tmp_line = <$FH>)); | |
1007 | ||
1008 | chomp $lastline; | |
1009 | $lastline =~ s/^\s+$//; | |
1010 | } | |
1011 | pop(@line), pop(@line_no) while @line && $line[-1] eq ""; | |
1012 | 1; | |
1013 | } | |
1014 | ||
1015 | PARAGRAPH: | |
1016 | while (fetch_para()) { | |
1017 | # Print initial preprocessor statements and blank lines | |
1018 | while (@line && $line[0] !~ /^[^\#]/) { | |
1019 | my $line = shift(@line); | |
1020 | print $line, "\n"; | |
1021 | next unless $line =~ /^\#\s*((if)(?:n?def)?|elsif|else|endif)\b/; | |
1022 | my $statement = $+; | |
1023 | if ($statement eq 'if') { | |
1024 | $XSS_work_idx = @XSStack; | |
1025 | push(@XSStack, {type => 'if'}); | |
1026 | } else { | |
1027 | death ("Error: `$statement' with no matching `if'") | |
1028 | if $XSStack[-1]{type} ne 'if'; | |
1029 | if ($XSStack[-1]{varname}) { | |
1030 | push(@InitFileCode, "#endif\n"); | |
1031 | push(@BootCode, "#endif"); | |
1032 | } | |
1033 | ||
1034 | my(@fns) = keys %{$XSStack[-1]{functions}}; | |
1035 | if ($statement ne 'endif') { | |
1036 | # Hide the functions defined in other #if branches, and reset. | |
1037 | @{$XSStack[-1]{other_functions}}{@fns} = (1) x @fns; | |
1038 | @{$XSStack[-1]}{qw(varname functions)} = ('', {}); | |
1039 | } else { | |
1040 | my($tmp) = pop(@XSStack); | |
1041 | 0 while (--$XSS_work_idx | |
1042 | && $XSStack[$XSS_work_idx]{type} ne 'if'); | |
1043 | # Keep all new defined functions | |
1044 | push(@fns, keys %{$tmp->{other_functions}}); | |
1045 | @{$XSStack[$XSS_work_idx]{functions}}{@fns} = (1) x @fns; | |
1046 | } | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | next PARAGRAPH unless @line; | |
1051 | ||
1052 | if ($XSS_work_idx && !$XSStack[$XSS_work_idx]{varname}) { | |
1053 | # We are inside an #if, but have not yet #defined its xsubpp variable. | |
1054 | print "#define $cpp_next_tmp 1\n\n"; | |
1055 | push(@InitFileCode, "#if $cpp_next_tmp\n"); | |
1056 | push(@BootCode, "#if $cpp_next_tmp"); | |
1057 | $XSStack[$XSS_work_idx]{varname} = $cpp_next_tmp++; | |
1058 | } | |
1059 | ||
1060 | death ("Code is not inside a function" | |
1061 | ." (maybe last function was ended by a blank line " | |
1062 | ." followed by a statement on column one?)") | |
1063 | if $line[0] =~ /^\s/; | |
1064 | ||
1065 | # initialize info arrays | |
1066 | undef(%args_match); | |
1067 | undef(%var_types); | |
1068 | undef(%defaults); | |
1069 | undef($class); | |
1070 | undef($externC); | |
1071 | undef($static); | |
1072 | undef($elipsis); | |
1073 | undef($wantRETVAL) ; | |
1074 | undef($RETVAL_no_return) ; | |
1075 | undef(%arg_list) ; | |
1076 | undef(@proto_arg) ; | |
1077 | undef(@fake_INPUT_pre) ; # For length(s) generated variables | |
1078 | undef(@fake_INPUT) ; | |
1079 | undef($processing_arg_with_types) ; | |
1080 | undef(%argtype_seen) ; | |
1081 | undef(@outlist) ; | |
1082 | undef(%in_out) ; | |
1083 | undef(%lengthof) ; | |
1084 | # undef(%islengthof) ; | |
1085 | undef($proto_in_this_xsub) ; | |
1086 | undef($scope_in_this_xsub) ; | |
1087 | undef($interface); | |
1088 | undef($prepush_done); | |
1089 | $interface_macro = 'XSINTERFACE_FUNC' ; | |
1090 | $interface_macro_set = 'XSINTERFACE_FUNC_SET' ; | |
1091 | $ProtoThisXSUB = $WantPrototypes ; | |
1092 | $ScopeThisXSUB = 0; | |
1093 | $xsreturn = 0; | |
1094 | ||
1095 | $_ = shift(@line); | |
1096 | while ($kwd = check_keyword("REQUIRE|PROTOTYPES|FALLBACK|VERSIONCHECK|INCLUDE")) { | |
1097 | &{"${kwd}_handler"}() ; | |
1098 | next PARAGRAPH unless @line ; | |
1099 | $_ = shift(@line); | |
1100 | } | |
1101 | ||
1102 | if (check_keyword("BOOT")) { | |
1103 | &check_cpp; | |
1104 | push (@BootCode, "#line $line_no[@line_no - @line] \"$filename\"") | |
1105 | if $WantLineNumbers && $line[0] !~ /^\s*#\s*line\b/; | |
1106 | push (@BootCode, @line, "") ; | |
1107 | next PARAGRAPH ; | |
1108 | } | |
1109 | ||
1110 | ||
1111 | # extract return type, function name and arguments | |
1112 | ($ret_type) = TidyType($_); | |
1113 | $RETVAL_no_return = 1 if $ret_type =~ s/^NO_OUTPUT\s+//; | |
1114 | ||
1115 | # Allow one-line ANSI-like declaration | |
1116 | unshift @line, $2 | |
1117 | if $process_argtypes | |
1118 | and $ret_type =~ s/^(.*?\w.*?)\s*\b(\w+\s*\(.*)/$1/s; | |
1119 | ||
1120 | # a function definition needs at least 2 lines | |
1121 | blurt ("Error: Function definition too short '$ret_type'"), next PARAGRAPH | |
1122 | unless @line ; | |
1123 | ||
1124 | $externC = 1 if $ret_type =~ s/^extern "C"\s+//; | |
1125 | $static = 1 if $ret_type =~ s/^static\s+//; | |
1126 | ||
1127 | $func_header = shift(@line); | |
1128 | blurt ("Error: Cannot parse function definition from '$func_header'"), next PARAGRAPH | |
1129 | unless $func_header =~ /^(?:([\w:]*)::)?(\w+)\s*\(\s*(.*?)\s*\)\s*(const)?\s*(;\s*)?$/s; | |
1130 | ||
1131 | ($class, $func_name, $orig_args) = ($1, $2, $3) ; | |
1132 | $class = "$4 $class" if $4; | |
1133 | ($pname = $func_name) =~ s/^($Prefix)?/$Packprefix/; | |
1134 | ($clean_func_name = $func_name) =~ s/^$Prefix//; | |
1135 | $Full_func_name = "${Packid}_$clean_func_name"; | |
1136 | if ($Is_VMS) { $Full_func_name = $SymSet->addsym($Full_func_name); } | |
1137 | ||
1138 | # Check for duplicate function definition | |
1139 | for $tmp (@XSStack) { | |
1140 | next unless defined $tmp->{functions}{$Full_func_name}; | |
1141 | Warn("Warning: duplicate function definition '$clean_func_name' detected"); | |
1142 | last; | |
1143 | } | |
1144 | $XSStack[$XSS_work_idx]{functions}{$Full_func_name} ++ ; | |
1145 | %XsubAliases = %XsubAliasValues = %Interfaces = @Attributes = (); | |
1146 | $DoSetMagic = 1; | |
1147 | ||
1148 | $orig_args =~ s/\\\s*/ /g; # process line continuations | |
1149 | ||
1150 | my %only_C_inlist; # Not in the signature of Perl function | |
1151 | if ($process_argtypes and $orig_args =~ /\S/) { | |
1152 | my $args = "$orig_args ,"; | |
1153 | if ($args =~ /^( (??{ $C_arg }) , )* $ /x) { | |
1154 | @args = ($args =~ /\G ( (??{ $C_arg }) ) , /xg); | |
1155 | for ( @args ) { | |
1156 | s/^\s+//; | |
1157 | s/\s+$//; | |
1158 | my ($arg, $default) = / ( [^=]* ) ( (?: = .* )? ) /x; | |
1159 | my ($pre, $name) = ($arg =~ /(.*?) \s* | |
1160 | \b ( \w+ | length\( \s*\w+\s* \) ) | |
1161 | \s* $ /x); | |
1162 | next unless length $pre; | |
1163 | my $out_type; | |
1164 | my $inout_var; | |
1165 | if ($process_inout and s/^(IN|IN_OUTLIST|OUTLIST|OUT|IN_OUT)\s+//) { | |
1166 | my $type = $1; | |
1167 | $out_type = $type if $type ne 'IN'; | |
1168 | $arg =~ s/^(IN|IN_OUTLIST|OUTLIST|OUT|IN_OUT)\s+//; | |
1169 | $pre =~ s/^(IN|IN_OUTLIST|OUTLIST|OUT|IN_OUT)\s+//; | |
1170 | } | |
1171 | my $islength; | |
1172 | if ($name =~ /^length\( \s* (\w+) \s* \)\z/x) { | |
1173 | $name = "XSauto_length_of_$1"; | |
1174 | $islength = 1; | |
1175 | die "Default value on length() argument: `$_'" | |
1176 | if length $default; | |
1177 | } | |
1178 | if (length $pre or $islength) { # Has a type | |
1179 | if ($islength) { | |
1180 | push @fake_INPUT_pre, $arg; | |
1181 | } else { | |
1182 | push @fake_INPUT, $arg; | |
1183 | } | |
1184 | # warn "pushing '$arg'\n"; | |
1185 | $argtype_seen{$name}++; | |
1186 | $_ = "$name$default"; # Assigns to @args | |
1187 | } | |
1188 | $only_C_inlist{$_} = 1 if $out_type eq "OUTLIST" or $islength; | |
1189 | push @outlist, $name if $out_type =~ /OUTLIST$/; | |
1190 | $in_out{$name} = $out_type if $out_type; | |
1191 | } | |
1192 | } else { | |
1193 | @args = split(/\s*,\s*/, $orig_args); | |
1194 | Warn("Warning: cannot parse argument list '$orig_args', fallback to split"); | |
1195 | } | |
1196 | } else { | |
1197 | @args = split(/\s*,\s*/, $orig_args); | |
1198 | for (@args) { | |
1199 | if ($process_inout and s/^(IN|IN_OUTLIST|OUTLIST|IN_OUT|OUT)\s+//) { | |
1200 | my $out_type = $1; | |
1201 | next if $out_type eq 'IN'; | |
1202 | $only_C_inlist{$_} = 1 if $out_type eq "OUTLIST"; | |
1203 | push @outlist, $name if $out_type =~ /OUTLIST$/; | |
1204 | $in_out{$_} = $out_type; | |
1205 | } | |
1206 | } | |
1207 | } | |
1208 | if (defined($class)) { | |
1209 | my $arg0 = ((defined($static) or $func_name eq 'new') | |
1210 | ? "CLASS" : "THIS"); | |
1211 | unshift(@args, $arg0); | |
1212 | ($report_args = "$arg0, $report_args") =~ s/^\w+, $/$arg0/; | |
1213 | } | |
1214 | my $extra_args = 0; | |
1215 | @args_num = (); | |
1216 | $num_args = 0; | |
1217 | my $report_args = ''; | |
1218 | foreach $i (0 .. $#args) { | |
1219 | if ($args[$i] =~ s/\.\.\.//) { | |
1220 | $elipsis = 1; | |
1221 | if ($args[$i] eq '' && $i == $#args) { | |
1222 | $report_args .= ", ..."; | |
1223 | pop(@args); | |
1224 | last; | |
1225 | } | |
1226 | } | |
1227 | if ($only_C_inlist{$args[$i]}) { | |
1228 | push @args_num, undef; | |
1229 | } else { | |
1230 | push @args_num, ++$num_args; | |
1231 | $report_args .= ", $args[$i]"; | |
1232 | } | |
1233 | if ($args[$i] =~ /^([^=]*[^\s=])\s*=\s*(.*)/s) { | |
1234 | $extra_args++; | |
1235 | $args[$i] = $1; | |
1236 | $defaults{$args[$i]} = $2; | |
1237 | $defaults{$args[$i]} =~ s/"/\\"/g; | |
1238 | } | |
1239 | $proto_arg[$i+1] = "\$" ; | |
1240 | } | |
1241 | $min_args = $num_args - $extra_args; | |
1242 | $report_args =~ s/"/\\"/g; | |
1243 | $report_args =~ s/^,\s+//; | |
1244 | my @func_args = @args; | |
1245 | shift @func_args if defined($class); | |
1246 | ||
1247 | for (@func_args) { | |
1248 | s/^/&/ if $in_out{$_}; | |
1249 | } | |
1250 | $func_args = join(", ", @func_args); | |
1251 | @args_match{@args} = @args_num; | |
1252 | ||
1253 | $PPCODE = grep(/^\s*PPCODE\s*:/, @line); | |
1254 | $CODE = grep(/^\s*CODE\s*:/, @line); | |
1255 | # Detect CODE: blocks which use ST(n)= or XST_m*(n,v) | |
1256 | # to set explicit return values. | |
1257 | $EXPLICIT_RETURN = ($CODE && | |
1258 | ("@line" =~ /(\bST\s*\([^;]*=) | (\bXST_m\w+\s*\()/x )); | |
1259 | $ALIAS = grep(/^\s*ALIAS\s*:/, @line); | |
1260 | $INTERFACE = grep(/^\s*INTERFACE\s*:/, @line); | |
1261 | ||
1262 | $xsreturn = 1 if $EXPLICIT_RETURN; | |
1263 | ||
1264 | $externC = $externC ? qq[extern "C"] : ""; | |
1265 | ||
1266 | # print function header | |
1267 | print Q<<"EOF"; | |
1268 | #$externC | |
1269 | #XS(XS_${Full_func_name}); /* prototype to pass -Wmissing-prototypes */ | |
1270 | #XS(XS_${Full_func_name}) | |
1271 | #[[ | |
1272 | # dXSARGS; | |
1273 | EOF | |
1274 | print Q<<"EOF" if $ALIAS ; | |
1275 | # dXSI32; | |
1276 | EOF | |
1277 | print Q<<"EOF" if $INTERFACE ; | |
1278 | # dXSFUNCTION($ret_type); | |
1279 | EOF | |
1280 | if ($elipsis) { | |
1281 | $cond = ($min_args ? qq(items < $min_args) : 0); | |
1282 | } | |
1283 | elsif ($min_args == $num_args) { | |
1284 | $cond = qq(items != $min_args); | |
1285 | } | |
1286 | else { | |
1287 | $cond = qq(items < $min_args || items > $num_args); | |
1288 | } | |
1289 | ||
1290 | print Q<<"EOF" if $except; | |
1291 | # char errbuf[1024]; | |
1292 | # *errbuf = '\0'; | |
1293 | EOF | |
1294 | ||
1295 | if ($ALIAS) | |
1296 | { print Q<<"EOF" if $cond } | |
1297 | # if ($cond) | |
1298 | # Perl_croak(aTHX_ "Usage: %s($report_args)", GvNAME(CvGV(cv))); | |
1299 | EOF | |
1300 | else | |
1301 | { print Q<<"EOF" if $cond } | |
1302 | # if ($cond) | |
1303 | # Perl_croak(aTHX_ "Usage: $pname($report_args)"); | |
1304 | EOF | |
1305 | ||
1306 | #gcc -Wall: if an xsub has no arguments and PPCODE is used | |
1307 | #it is likely none of ST, XSRETURN or XSprePUSH macros are used | |
1308 | #hence `ax' (setup by dXSARGS) is unused | |
1309 | #XXX: could breakup the dXSARGS; into dSP;dMARK;dITEMS | |
1310 | #but such a move could break third-party extensions | |
1311 | print Q<<"EOF" if $PPCODE and $num_args == 0; | |
1312 | # PERL_UNUSED_VAR(ax); /* -Wall */ | |
1313 | EOF | |
1314 | ||
1315 | print Q<<"EOF" if $PPCODE; | |
1316 | # SP -= items; | |
1317 | EOF | |
1318 | ||
1319 | # Now do a block of some sort. | |
1320 | ||
1321 | $condnum = 0; | |
1322 | $cond = ''; # last CASE: condidional | |
1323 | push(@line, "$END:"); | |
1324 | push(@line_no, $line_no[-1]); | |
1325 | $_ = ''; | |
1326 | &check_cpp; | |
1327 | while (@line) { | |
1328 | &CASE_handler if check_keyword("CASE"); | |
1329 | print Q<<"EOF"; | |
1330 | # $except [[ | |
1331 | EOF | |
1332 | ||
1333 | # do initialization of input variables | |
1334 | $thisdone = 0; | |
1335 | $retvaldone = 0; | |
1336 | $deferred = ""; | |
1337 | %arg_list = () ; | |
1338 | $gotRETVAL = 0; | |
1339 | ||
1340 | INPUT_handler() ; | |
1341 | process_keyword("INPUT|PREINIT|INTERFACE_MACRO|C_ARGS|ALIAS|ATTRS|PROTOTYPE|SCOPE|OVERLOAD") ; | |
1342 | ||
1343 | print Q<<"EOF" if $ScopeThisXSUB; | |
1344 | # ENTER; | |
1345 | # [[ | |
1346 | EOF | |
1347 | ||
1348 | if (!$thisdone && defined($class)) { | |
1349 | if (defined($static) or $func_name eq 'new') { | |
1350 | print "\tchar *"; | |
1351 | $var_types{"CLASS"} = "char *"; | |
1352 | &generate_init("char *", 1, "CLASS"); | |
1353 | } | |
1354 | else { | |
1355 | print "\t$class *"; | |
1356 | $var_types{"THIS"} = "$class *"; | |
1357 | &generate_init("$class *", 1, "THIS"); | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | # do code | |
1362 | if (/^\s*NOT_IMPLEMENTED_YET/) { | |
1363 | print "\n\tPerl_croak(aTHX_ \"$pname: not implemented yet\");\n"; | |
1364 | $_ = '' ; | |
1365 | } else { | |
1366 | if ($ret_type ne "void") { | |
1367 | print "\t" . &map_type($ret_type, 'RETVAL') . ";\n" | |
1368 | if !$retvaldone; | |
1369 | $args_match{"RETVAL"} = 0; | |
1370 | $var_types{"RETVAL"} = $ret_type; | |
1371 | print "\tdXSTARG;\n" | |
1372 | if $WantOptimize and $targetable{$type_kind{$ret_type}}; | |
1373 | } | |
1374 | ||
1375 | if (@fake_INPUT or @fake_INPUT_pre) { | |
1376 | unshift @line, @fake_INPUT_pre, @fake_INPUT, $_; | |
1377 | $_ = ""; | |
1378 | $processing_arg_with_types = 1; | |
1379 | INPUT_handler() ; | |
1380 | } | |
1381 | print $deferred; | |
1382 | ||
1383 | process_keyword("INIT|ALIAS|ATTRS|PROTOTYPE|INTERFACE_MACRO|INTERFACE|C_ARGS|OVERLOAD") ; | |
1384 | ||
1385 | if (check_keyword("PPCODE")) { | |
1386 | print_section(); | |
1387 | death ("PPCODE must be last thing") if @line; | |
1388 | print "\tLEAVE;\n" if $ScopeThisXSUB; | |
1389 | print "\tPUTBACK;\n\treturn;\n"; | |
1390 | } elsif (check_keyword("CODE")) { | |
1391 | print_section() ; | |
1392 | } elsif (defined($class) and $func_name eq "DESTROY") { | |
1393 | print "\n\t"; | |
1394 | print "delete THIS;\n"; | |
1395 | } else { | |
1396 | print "\n\t"; | |
1397 | if ($ret_type ne "void") { | |
1398 | print "RETVAL = "; | |
1399 | $wantRETVAL = 1; | |
1400 | } | |
1401 | if (defined($static)) { | |
1402 | if ($func_name eq 'new') { | |
1403 | $func_name = "$class"; | |
1404 | } else { | |
1405 | print "${class}::"; | |
1406 | } | |
1407 | } elsif (defined($class)) { | |
1408 | if ($func_name eq 'new') { | |
1409 | $func_name .= " $class"; | |
1410 | } else { | |
1411 | print "THIS->"; | |
1412 | } | |
1413 | } | |
1414 | $func_name =~ s/^($spat)// | |
1415 | if defined($spat); | |
1416 | $func_name = 'XSFUNCTION' if $interface; | |
1417 | print "$func_name($func_args);\n"; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | # do output variables | |
1422 | $gotRETVAL = 0; # 1 if RETVAL seen in OUTPUT section; | |
1423 | undef $RETVAL_code ; # code to set RETVAL (from OUTPUT section); | |
1424 | # $wantRETVAL set if 'RETVAL =' autogenerated | |
1425 | ($wantRETVAL, $ret_type) = (0, 'void') if $RETVAL_no_return; | |
1426 | undef %outargs ; | |
1427 | process_keyword("POSTCALL|OUTPUT|ALIAS|ATTRS|PROTOTYPE|OVERLOAD"); | |
1428 | ||
1429 | &generate_output($var_types{$_}, $args_match{$_}, $_, $DoSetMagic) | |
1430 | for grep $in_out{$_} =~ /OUT$/, keys %in_out; | |
1431 | ||
1432 | # all OUTPUT done, so now push the return value on the stack | |
1433 | if ($gotRETVAL && $RETVAL_code) { | |
1434 | print "\t$RETVAL_code\n"; | |
1435 | } elsif ($gotRETVAL || $wantRETVAL) { | |
1436 | my $t = $WantOptimize && $targetable{$type_kind{$ret_type}}; | |
1437 | my $var = 'RETVAL'; | |
1438 | my $type = $ret_type; | |
1439 | ||
1440 | # 0: type, 1: with_size, 2: how, 3: how_size | |
1441 | if ($t and not $t->[1] and $t->[0] eq 'p') { | |
1442 | # PUSHp corresponds to setpvn. Treate setpv directly | |
1443 | my $what = eval qq("$t->[2]"); | |
1444 | warn $@ if $@; | |
1445 | ||
1446 | print "\tsv_setpv(TARG, $what); XSprePUSH; PUSHTARG;\n"; | |
1447 | $prepush_done = 1; | |
1448 | } | |
1449 | elsif ($t) { | |
1450 | my $what = eval qq("$t->[2]"); | |
1451 | warn $@ if $@; | |
1452 | ||
1453 | my $size = $t->[3]; | |
1454 | $size = '' unless defined $size; | |
1455 | $size = eval qq("$size"); | |
1456 | warn $@ if $@; | |
1457 | print "\tXSprePUSH; PUSH$t->[0]($what$size);\n"; | |
1458 | $prepush_done = 1; | |
1459 | } | |
1460 | else { | |
1461 | # RETVAL almost never needs SvSETMAGIC() | |
1462 | &generate_output($ret_type, 0, 'RETVAL', 0); | |
1463 | } | |
1464 | } | |
1465 | ||
1466 | $xsreturn = 1 if $ret_type ne "void"; | |
1467 | my $num = $xsreturn; | |
1468 | my $c = @outlist; | |
1469 | # (PP)CODE set different values of SP; reset to PPCODE's with 0 output | |
1470 | print "\tXSprePUSH;" if $c and not $prepush_done; | |
1471 | # Take into account stuff already put on stack | |
1472 | print "\t++SP;" if $c and not $prepush_done and $xsreturn; | |
1473 | # Now SP corresponds to ST($xsreturn), so one can combine PUSH and ST() | |
1474 | print "\tEXTEND(SP,$c);\n" if $c; | |
1475 | $xsreturn += $c; | |
1476 | generate_output($var_types{$_}, $num++, $_, 0, 1) for @outlist; | |
1477 | ||
1478 | # do cleanup | |
1479 | process_keyword("CLEANUP|ALIAS|ATTRS|PROTOTYPE|OVERLOAD") ; | |
1480 | ||
1481 | print Q<<"EOF" if $ScopeThisXSUB; | |
1482 | # ]] | |
1483 | EOF | |
1484 | print Q<<"EOF" if $ScopeThisXSUB and not $PPCODE; | |
1485 | # LEAVE; | |
1486 | EOF | |
1487 | ||
1488 | # print function trailer | |
1489 | print Q<<EOF; | |
1490 | # ]] | |
1491 | EOF | |
1492 | print Q<<EOF if $except; | |
1493 | # BEGHANDLERS | |
1494 | # CATCHALL | |
1495 | # sprintf(errbuf, "%s: %s\\tpropagated", Xname, Xreason); | |
1496 | # ENDHANDLERS | |
1497 | EOF | |
1498 | if (check_keyword("CASE")) { | |
1499 | blurt ("Error: No `CASE:' at top of function") | |
1500 | unless $condnum; | |
1501 | $_ = "CASE: $_"; # Restore CASE: label | |
1502 | next; | |
1503 | } | |
1504 | last if $_ eq "$END:"; | |
1505 | death(/^$BLOCK_re/o ? "Misplaced `$1:'" : "Junk at end of function"); | |
1506 | } | |
1507 | ||
1508 | print Q<<EOF if $except; | |
1509 | # if (errbuf[0]) | |
1510 | # Perl_croak(aTHX_ errbuf); | |
1511 | EOF | |
1512 | ||
1513 | if ($xsreturn) { | |
1514 | print Q<<EOF unless $PPCODE; | |
1515 | # XSRETURN($xsreturn); | |
1516 | EOF | |
1517 | } else { | |
1518 | print Q<<EOF unless $PPCODE; | |
1519 | # XSRETURN_EMPTY; | |
1520 | EOF | |
1521 | } | |
1522 | ||
1523 | print Q<<EOF; | |
1524 | #]] | |
1525 | # | |
1526 | EOF | |
1527 | ||
1528 | my $newXS = "newXS" ; | |
1529 | my $proto = "" ; | |
1530 | ||
1531 | # Build the prototype string for the xsub | |
1532 | if ($ProtoThisXSUB) { | |
1533 | $newXS = "newXSproto"; | |
1534 | ||
1535 | if ($ProtoThisXSUB eq 2) { | |
1536 | # User has specified empty prototype | |
1537 | $proto = ', ""' ; | |
1538 | } | |
1539 | elsif ($ProtoThisXSUB ne 1) { | |
1540 | # User has specified a prototype | |
1541 | $proto = ', "' . $ProtoThisXSUB . '"'; | |
1542 | } | |
1543 | else { | |
1544 | my $s = ';'; | |
1545 | if ($min_args < $num_args) { | |
1546 | $s = ''; | |
1547 | $proto_arg[$min_args] .= ";" ; | |
1548 | } | |
1549 | push @proto_arg, "$s\@" | |
1550 | if $elipsis ; | |
1551 | ||
1552 | $proto = ', "' . join ("", @proto_arg) . '"'; | |
1553 | } | |
1554 | } | |
1555 | ||
1556 | if (%XsubAliases) { | |
1557 | $XsubAliases{$pname} = 0 | |
1558 | unless defined $XsubAliases{$pname} ; | |
1559 | while ( ($name, $value) = each %XsubAliases) { | |
1560 | push(@InitFileCode, Q<<"EOF"); | |
1561 | # cv = newXS(\"$name\", XS_$Full_func_name, file); | |
1562 | # XSANY.any_i32 = $value ; | |
1563 | EOF | |
1564 | push(@InitFileCode, Q<<"EOF") if $proto; | |
1565 | # sv_setpv((SV*)cv$proto) ; | |
1566 | EOF | |
1567 | } | |
1568 | } | |
1569 | elsif (@Attributes) { | |
1570 | push(@InitFileCode, Q<<"EOF"); | |
1571 | # cv = newXS(\"$pname\", XS_$Full_func_name, file); | |
1572 | # apply_attrs_string("$Package", cv, "@Attributes", 0); | |
1573 | EOF | |
1574 | } | |
1575 | elsif ($interface) { | |
1576 | while ( ($name, $value) = each %Interfaces) { | |
1577 | $name = "$Package\::$name" unless $name =~ /::/; | |
1578 | push(@InitFileCode, Q<<"EOF"); | |
1579 | # cv = newXS(\"$name\", XS_$Full_func_name, file); | |
1580 | # $interface_macro_set(cv,$value) ; | |
1581 | EOF | |
1582 | push(@InitFileCode, Q<<"EOF") if $proto; | |
1583 | # sv_setpv((SV*)cv$proto) ; | |
1584 | EOF | |
1585 | } | |
1586 | } | |
1587 | else { | |
1588 | push(@InitFileCode, | |
1589 | " ${newXS}(\"$pname\", XS_$Full_func_name, file$proto);\n"); | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | if ($Overload) # make it findable with fetchmethod | |
1594 | { | |
1595 | ||
1596 | print Q<<"EOF"; | |
1597 | #XS(XS_${Packid}_nil); /* prototype to pass -Wmissing-prototypes */ | |
1598 | #XS(XS_${Packid}_nil) | |
1599 | #{ | |
1600 | # XSRETURN_EMPTY; | |
1601 | #} | |
1602 | # | |
1603 | EOF | |
1604 | unshift(@InitFileCode, <<"MAKE_FETCHMETHOD_WORK"); | |
1605 | /* Making a sub named "${Package}::()" allows the package */ | |
1606 | /* to be findable via fetchmethod(), and causes */ | |
1607 | /* overload::Overloaded("${Package}") to return true. */ | |
1608 | newXS("${Package}::()", XS_${Packid}_nil, file$proto); | |
1609 | MAKE_FETCHMETHOD_WORK | |
1610 | } | |
1611 | ||
1612 | # print initialization routine | |
1613 | ||
1614 | print Q<<"EOF"; | |
1615 | ##ifdef __cplusplus | |
1616 | #extern "C" | |
1617 | ##endif | |
1618 | EOF | |
1619 | ||
1620 | print Q<<"EOF"; | |
1621 | #XS(boot_$Module_cname); /* prototype to pass -Wmissing-prototypes */ | |
1622 | #XS(boot_$Module_cname) | |
1623 | EOF | |
1624 | ||
1625 | print Q<<"EOF"; | |
1626 | #[[ | |
1627 | # dXSARGS; | |
1628 | EOF | |
1629 | ||
1630 | #-Wall: if there is no $Full_func_name there are no xsubs in this .xs | |
1631 | #so `file' is unused | |
1632 | print Q<<"EOF" if $Full_func_name; | |
1633 | # char* file = __FILE__; | |
1634 | EOF | |
1635 | ||
1636 | print Q "#\n"; | |
1637 | ||
1638 | print Q<<"EOF" if $WantVersionChk ; | |
1639 | # XS_VERSION_BOOTCHECK ; | |
1640 | # | |
1641 | EOF | |
1642 | ||
1643 | print Q<<"EOF" if defined $XsubAliases or defined $Interfaces ; | |
1644 | # { | |
1645 | # CV * cv ; | |
1646 | # | |
1647 | EOF | |
1648 | ||
1649 | print Q<<"EOF" if ($Overload); | |
1650 | # /* register the overloading (type 'A') magic */ | |
1651 | # PL_amagic_generation++; | |
1652 | # /* The magic for overload gets a GV* via gv_fetchmeth as */ | |
1653 | # /* mentioned above, and looks in the SV* slot of it for */ | |
1654 | # /* the "fallback" status. */ | |
1655 | # sv_setsv( | |
1656 | # get_sv( "${Package}::()", TRUE ), | |
1657 | # $Fallback | |
1658 | # ); | |
1659 | EOF | |
1660 | ||
1661 | print @InitFileCode; | |
1662 | ||
1663 | print Q<<"EOF" if defined $XsubAliases or defined $Interfaces ; | |
1664 | # } | |
1665 | EOF | |
1666 | ||
1667 | if (@BootCode) | |
1668 | { | |
1669 | print "\n /* Initialisation Section */\n\n" ; | |
1670 | @line = @BootCode; | |
1671 | print_section(); | |
1672 | print "\n /* End of Initialisation Section */\n\n" ; | |
1673 | } | |
1674 | ||
1675 | print Q<<"EOF";; | |
1676 | # XSRETURN_YES; | |
1677 | #]] | |
1678 | # | |
1679 | EOF | |
1680 | ||
1681 | warn("Please specify prototyping behavior for $filename (see perlxs manual)\n") | |
1682 | unless $ProtoUsed ; | |
1683 | &Exit; | |
1684 | ||
1685 | sub output_init { | |
1686 | local($type, $num, $var, $init, $name_printed) = @_; | |
1687 | local($arg) = "ST(" . ($num - 1) . ")"; | |
1688 | ||
1689 | if( $init =~ /^=/ ) { | |
1690 | if ($name_printed) { | |
1691 | eval qq/print " $init\\n"/; | |
1692 | } else { | |
1693 | eval qq/print "\\t$var $init\\n"/; | |
1694 | } | |
1695 | warn $@ if $@; | |
1696 | } else { | |
1697 | if( $init =~ s/^\+// && $num ) { | |
1698 | &generate_init($type, $num, $var, $name_printed); | |
1699 | } elsif ($name_printed) { | |
1700 | print ";\n"; | |
1701 | $init =~ s/^;//; | |
1702 | } else { | |
1703 | eval qq/print "\\t$var;\\n"/; | |
1704 | warn $@ if $@; | |
1705 | $init =~ s/^;//; | |
1706 | } | |
1707 | $deferred .= eval qq/"\\n\\t$init\\n"/; | |
1708 | warn $@ if $@; | |
1709 | } | |
1710 | } | |
1711 | ||
1712 | sub Warn | |
1713 | { | |
1714 | # work out the line number | |
1715 | my $line_no = $line_no[@line_no - @line -1] ; | |
1716 | ||
1717 | print STDERR "@_ in $filename, line $line_no\n" ; | |
1718 | } | |
1719 | ||
1720 | sub blurt | |
1721 | { | |
1722 | Warn @_ ; | |
1723 | $errors ++ | |
1724 | } | |
1725 | ||
1726 | sub death | |
1727 | { | |
1728 | Warn @_ ; | |
1729 | exit 1 ; | |
1730 | } | |
1731 | ||
1732 | sub generate_init { | |
1733 | local($type, $num, $var) = @_; | |
1734 | local($arg) = "ST(" . ($num - 1) . ")"; | |
1735 | local($argoff) = $num - 1; | |
1736 | local($ntype); | |
1737 | local($tk); | |
1738 | ||
1739 | $type = TidyType($type) ; | |
1740 | blurt("Error: '$type' not in typemap"), return | |
1741 | unless defined($type_kind{$type}); | |
1742 | ||
1743 | ($ntype = $type) =~ s/\s*\*/Ptr/g; | |
1744 | ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//; | |
1745 | $tk = $type_kind{$type}; | |
1746 | $tk =~ s/OBJ$/REF/ if $func_name =~ /DESTROY$/; | |
1747 | if ($tk eq 'T_PV' and exists $lengthof{$var}) { | |
1748 | print "\t$var" unless $name_printed; | |
1749 | print " = ($type)SvPV($arg, STRLEN_length_of_$var);\n"; | |
1750 | die "default value not supported with length(NAME) supplied" | |
1751 | if defined $defaults{$var}; | |
1752 | return; | |
1753 | } | |
1754 | $type =~ tr/:/_/ unless $hiertype; | |
1755 | blurt("Error: No INPUT definition for type '$type', typekind '$type_kind{$type}' found"), return | |
1756 | unless defined $input_expr{$tk} ; | |
1757 | $expr = $input_expr{$tk}; | |
1758 | if ($expr =~ /DO_ARRAY_ELEM/) { | |
1759 | blurt("Error: '$subtype' not in typemap"), return | |
1760 | unless defined($type_kind{$subtype}); | |
1761 | blurt("Error: No INPUT definition for type '$subtype', typekind '$type_kind{$subtype}' found"), return | |
1762 | unless defined $input_expr{$type_kind{$subtype}} ; | |
1763 | $subexpr = $input_expr{$type_kind{$subtype}}; | |
1764 | $subexpr =~ s/\$type/\$subtype/g; | |
1765 | $subexpr =~ s/ntype/subtype/g; | |
1766 | $subexpr =~ s/\$arg/ST(ix_$var)/g; | |
1767 | $subexpr =~ s/\n\t/\n\t\t/g; | |
1768 | $subexpr =~ s/is not of (.*\")/[arg %d] is not of $1, ix_$var + 1/g; | |
1769 | $subexpr =~ s/\$var/${var}[ix_$var - $argoff]/; | |
1770 | $expr =~ s/DO_ARRAY_ELEM/$subexpr/; | |
1771 | } | |
1772 | if ($expr =~ m#/\*.*scope.*\*/#i) { # "scope" in C comments | |
1773 | $ScopeThisXSUB = 1; | |
1774 | } | |
1775 | if (defined($defaults{$var})) { | |
1776 | $expr =~ s/(\t+)/$1 /g; | |
1777 | $expr =~ s/ /\t/g; | |
1778 | if ($name_printed) { | |
1779 | print ";\n"; | |
1780 | } else { | |
1781 | eval qq/print "\\t$var;\\n"/; | |
1782 | warn $@ if $@; | |
1783 | } | |
1784 | if ($defaults{$var} eq 'NO_INIT') { | |
1785 | $deferred .= eval qq/"\\n\\tif (items >= $num) {\\n$expr;\\n\\t}\\n"/; | |
1786 | } else { | |
1787 | $deferred .= eval qq/"\\n\\tif (items < $num)\\n\\t $var = $defaults{$var};\\n\\telse {\\n$expr;\\n\\t}\\n"/; | |
1788 | } | |
1789 | warn $@ if $@; | |
1790 | } elsif ($ScopeThisXSUB or $expr !~ /^\s*\$var =/) { | |
1791 | if ($name_printed) { | |
1792 | print ";\n"; | |
1793 | } else { | |
1794 | eval qq/print "\\t$var;\\n"/; | |
1795 | warn $@ if $@; | |
1796 | } | |
1797 | $deferred .= eval qq/"\\n$expr;\\n"/; | |
1798 | warn $@ if $@; | |
1799 | } else { | |
1800 | die "panic: do not know how to handle this branch for function pointers" | |
1801 | if $name_printed; | |
1802 | eval qq/print "$expr;\\n"/; | |
1803 | warn $@ if $@; | |
1804 | } | |
1805 | } | |
1806 | ||
1807 | sub generate_output { | |
1808 | local($type, $num, $var, $do_setmagic, $do_push) = @_; | |
1809 | local($arg) = "ST(" . ($num - ($num != 0)) . ")"; | |
1810 | local($argoff) = $num - 1; | |
1811 | local($ntype); | |
1812 | ||
1813 | $type = TidyType($type) ; | |
1814 | if ($type =~ /^array\(([^,]*),(.*)\)/) { | |
1815 | print "\t$arg = sv_newmortal();\n"; | |
1816 | print "\tsv_setpvn($arg, (char *)$var, $2 * sizeof($1));\n"; | |
1817 | print "\tSvSETMAGIC($arg);\n" if $do_setmagic; | |
1818 | } else { | |
1819 | blurt("Error: '$type' not in typemap"), return | |
1820 | unless defined($type_kind{$type}); | |
1821 | blurt("Error: No OUTPUT definition for type '$type', typekind '$type_kind{$type}' found"), return | |
1822 | unless defined $output_expr{$type_kind{$type}} ; | |
1823 | ($ntype = $type) =~ s/\s*\*/Ptr/g; | |
1824 | $ntype =~ s/\(\)//g; | |
1825 | ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//; | |
1826 | $expr = $output_expr{$type_kind{$type}}; | |
1827 | if ($expr =~ /DO_ARRAY_ELEM/) { | |
1828 | blurt("Error: '$subtype' not in typemap"), return | |
1829 | unless defined($type_kind{$subtype}); | |
1830 | blurt("Error: No OUTPUT definition for type '$subtype', typekind '$type_kind{$subtype}' found"), return | |
1831 | unless defined $output_expr{$type_kind{$subtype}} ; | |
1832 | $subexpr = $output_expr{$type_kind{$subtype}}; | |
1833 | $subexpr =~ s/ntype/subtype/g; | |
1834 | $subexpr =~ s/\$arg/ST(ix_$var)/g; | |
1835 | $subexpr =~ s/\$var/${var}[ix_$var]/g; | |
1836 | $subexpr =~ s/\n\t/\n\t\t/g; | |
1837 | $expr =~ s/DO_ARRAY_ELEM\n/$subexpr/; | |
1838 | eval "print qq\a$expr\a"; | |
1839 | warn $@ if $@; | |
1840 | print "\t\tSvSETMAGIC(ST(ix_$var));\n" if $do_setmagic; | |
1841 | } | |
1842 | elsif ($var eq 'RETVAL') { | |
1843 | if ($expr =~ /^\t\$arg = new/) { | |
1844 | # We expect that $arg has refcnt 1, so we need to | |
1845 | # mortalize it. | |
1846 | eval "print qq\a$expr\a"; | |
1847 | warn $@ if $@; | |
1848 | print "\tsv_2mortal(ST($num));\n"; | |
1849 | print "\tSvSETMAGIC(ST($num));\n" if $do_setmagic; | |
1850 | } | |
1851 | elsif ($expr =~ /^\s*\$arg\s*=/) { | |
1852 | # We expect that $arg has refcnt >=1, so we need | |
1853 | # to mortalize it! | |
1854 | eval "print qq\a$expr\a"; | |
1855 | warn $@ if $@; | |
1856 | print "\tsv_2mortal(ST(0));\n"; | |
1857 | print "\tSvSETMAGIC(ST(0));\n" if $do_setmagic; | |
1858 | } | |
1859 | else { | |
1860 | # Just hope that the entry would safely write it | |
1861 | # over an already mortalized value. By | |
1862 | # coincidence, something like $arg = &sv_undef | |
1863 | # works too. | |
1864 | print "\tST(0) = sv_newmortal();\n"; | |
1865 | eval "print qq\a$expr\a"; | |
1866 | warn $@ if $@; | |
1867 | # new mortals don't have set magic | |
1868 | } | |
1869 | } | |
1870 | elsif ($do_push) { | |
1871 | print "\tPUSHs(sv_newmortal());\n"; | |
1872 | $arg = "ST($num)"; | |
1873 | eval "print qq\a$expr\a"; | |
1874 | warn $@ if $@; | |
1875 | print "\tSvSETMAGIC($arg);\n" if $do_setmagic; | |
1876 | } | |
1877 | elsif ($arg =~ /^ST\(\d+\)$/) { | |
1878 | eval "print qq\a$expr\a"; | |
1879 | warn $@ if $@; | |
1880 | print "\tSvSETMAGIC($arg);\n" if $do_setmagic; | |
1881 | } | |
1882 | } | |
1883 | } | |
1884 | ||
1885 | sub map_type { | |
1886 | my($type, $varname) = @_; | |
1887 | ||
1888 | # C++ has :: in types too so skip this | |
1889 | $type =~ tr/:/_/ unless $hiertype; | |
1890 | $type =~ s/^array\(([^,]*),(.*)\).*/$1 */s; | |
1891 | if ($varname) { | |
1892 | if ($varname && $type =~ / \( \s* \* (?= \s* \) ) /xg) { | |
1893 | (substr $type, pos $type, 0) = " $varname "; | |
1894 | } else { | |
1895 | $type .= "\t$varname"; | |
1896 | } | |
1897 | } | |
1898 | $type; | |
1899 | } | |
1900 | ||
1901 | ||
1902 | sub Exit { | |
1903 | # If this is VMS, the exit status has meaning to the shell, so we | |
1904 | # use a predictable value (SS$_Normal or SS$_Abort) rather than an | |
1905 | # arbitrary number. | |
1906 | # exit ($Is_VMS ? ($errors ? 44 : 1) : $errors) ; | |
1907 | exit ($errors ? 1 : 0); | |
1908 | } |