1 package ExtUtils::ParseXS;
4 use 5.008001; # We use /??{}/ in regexes
16 use ExtUtils::ParseXS::Constants $VERSION;
17 use ExtUtils::ParseXS::CountLines $VERSION;
18 use ExtUtils::ParseXS::Utilities $VERSION;
19 $VERSION = eval $VERSION if $VERSION =~ /_/;
21 use ExtUtils::ParseXS::Utilities qw(
22 standard_typemap_locations
32 analyze_preprocessor_statements
38 check_conditional_preprocessor_statements
41 our @ISA = qw(Exporter);
47 # The scalars in the line below remain as 'our' variables because pulling
48 # them into $self led to build problems. In most cases, strings being
49 # 'eval'-ed contain the variables' names hard-coded.
51 $Package, $func_name, $Full_func_name, $pname, $ALIAS,
54 our $self = bless {} => __PACKAGE__;
58 # Allow for $package->process_file(%hash) in the future
59 my ($pkg, %options) = @_ % 2 ? @_ : (__PACKAGE__, @_);
61 $self->{ProtoUsed} = exists $options{prototypes};
76 FH => Symbol::gensym(),
79 $args{except} = $args{except} ? ' TRY' : '';
83 my ($Is_VMS, $SymSet);
86 # Establish set of global symbols with max length 28, since xsubpp
87 # will later add the 'XS_' prefix.
88 require ExtUtils::XSSymSet;
89 $SymSet = ExtUtils::XSSymSet->new(28);
91 @{ $self->{XSStack} } = ({type => 'none'});
92 $self->{InitFileCode} = [ @ExtUtils::ParseXS::Constants::InitFileCode ];
93 $self->{Overload} = 0;
95 $self->{Fallback} = '&PL_sv_undef';
97 # Most of the 1500 lines below uses these globals. We'll have to
98 # clean this up sometime, probably. For now, we just pull them out
101 $self->{hiertype} = $args{hiertype};
102 $self->{WantPrototypes} = $args{prototypes};
103 $self->{WantVersionChk} = $args{versioncheck};
104 $self->{WantLineNumbers} = $args{linenumbers};
105 $self->{IncludedFiles} = {};
107 die "Missing required parameter 'filename'" unless $args{filename};
108 $self->{filepathname} = $args{filename};
109 ($self->{dir}, $self->{filename}) =
110 (dirname($args{filename}), basename($args{filename}));
111 $self->{filepathname} =~ s/\\/\\\\/g;
112 $self->{IncludedFiles}->{$args{filename}}++;
114 # Open the output file if given as a string. If they provide some
115 # other kind of reference, trust them that we can print to it.
116 if (not ref $args{output}) {
117 open my($fh), "> $args{output}" or die "Can't create $args{output}: $!";
118 $args{outfile} = $args{output};
122 # Really, we shouldn't have to chdir() or select() in the first
123 # place. For now, just save and restore.
124 my $orig_cwd = cwd();
125 my $orig_fh = select();
129 my $csuffix = $args{csuffix};
131 if ($self->{WantLineNumbers}) {
133 if ( $args{outfile} ) {
134 $cfile = $args{outfile};
137 $cfile = $args{filename};
138 $cfile =~ s/\.xs$/$csuffix/i or $cfile .= $csuffix;
140 tie(*PSEUDO_STDOUT, 'ExtUtils::ParseXS::CountLines', $cfile, $args{output});
141 select PSEUDO_STDOUT;
144 select $args{output};
147 $self->{typemap} = process_typemaps( $args{typemap}, $pwd );
149 my $END = "!End!\n\n"; # "impossible" keyword (multiple newline)
151 # Match an XS keyword
152 $self->{BLOCK_re} = '\s*(' .
153 join('|' => @ExtUtils::ParseXS::Constants::XSKeywords) .
156 our ($C_group_rex, $C_arg);
157 # Group in C (no support for comments or literals)
158 $C_group_rex = qr/ [({\[]
159 (?: (?> [^()\[\]{}]+ ) | (??{ $C_group_rex }) )*
161 # Chunk in C without comma at toplevel (no comments):
162 $C_arg = qr/ (?: (?> [^()\[\]{},"']+ )
163 | (??{ $C_group_rex })
164 | " (?: (?> [^\\"]+ )
166 )* " # String literal
167 | ' (?: (?> [^\\']+ ) | \\. )* ' # Char literal
170 # Since at this point we're ready to begin printing to the output file and
171 # reading from the input file, I want to get as much data as possible into
172 # the proto-object $self. That means assigning to $self and elements of
173 # %args referenced below this point.
174 # HOWEVER: This resulted in an error when I tried:
175 # $args{'s'} ---> $self->{s}.
176 # Use of uninitialized value in quotemeta at
177 # .../blib/lib/ExtUtils/ParseXS.pm line 733
179 foreach my $datum ( qw| argtypes except inout optimize | ) {
180 $self->{$datum} = $args{$datum};
183 # Identify the version of xsubpp used
186 * This file was generated automatically by ExtUtils::ParseXS version $VERSION from the
187 * contents of $self->{filename}. Do not edit this file, edit $self->{filename} instead.
189 * ANY CHANGES MADE HERE WILL BE LOST!
196 print("#line 1 \"$self->{filepathname}\"\n")
197 if $self->{WantLineNumbers};
199 # Open the input file (using $self->{filename} which
200 # is a basename'd $args{filename} due to chdir above)
201 open($self->{FH}, '<', $self->{filename}) or die "cannot open $self->{filename}: $!\n";
204 while (readline($self->{FH})) {
206 my $podstartline = $.;
209 # We can't just write out a /* */ comment, as our embedded
210 # POD might itself be in a comment. We can't put a /**/
211 # comment inside #if 0, as the C standard says that the source
212 # file is decomposed into preprocessing characters in the stage
213 # before preprocessing commands are executed.
214 # I don't want to leave the text as barewords, because the spec
215 # isn't clear whether macros are expanded before or after
216 # preprocessing commands are executed, and someone pathological
217 # may just have defined one of the 3 words as a macro that does
218 # something strange. Multiline strings are illegal in C, so
219 # the "" we write must be a string literal. And they aren't
220 # concatenated until 2 steps later, so we are safe.
222 print("#if 0\n \"Skipped embedded POD.\"\n#endif\n");
223 printf("#line %d \"$self->{filepathname}\"\n", $. + 1)
224 if $self->{WantLineNumbers};
228 } while (readline($self->{FH}));
229 # At this point $. is at end of file so die won't state the start
230 # of the problem, and as we haven't yet read any lines &death won't
231 # show the correct line in the message either.
232 die ("Error: Unterminated pod in $self->{filename}, line $podstartline\n")
233 unless $self->{lastline};
235 last if ($Package, $self->{Prefix}) =
236 /^MODULE\s*=\s*[\w:]+(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/;
240 unless (defined $_) {
241 warn "Didn't find a 'MODULE ... PACKAGE ... PREFIX' line\n";
242 exit 0; # Not a fatal error for the caller process
245 print 'ExtUtils::ParseXS::CountLines'->end_marker, "\n" if $self->{WantLineNumbers};
249 print 'ExtUtils::ParseXS::CountLines'->end_marker, "\n" if $self->{WantLineNumbers};
251 $self->{lastline} = $_;
252 $self->{lastline_no} = $.;
254 my $BootCode_ref = [];
255 my $XSS_work_idx = 0;
256 my $cpp_next_tmp = 'XSubPPtmpAAAA';
258 while ($self->fetch_para()) {
259 my $outlist_ref = [];
260 # Print initial preprocessor statements and blank lines
261 while (@{ $self->{line} } && $self->{line}->[0] !~ /^[^\#]/) {
262 my $ln = shift(@{ $self->{line} });
264 next unless $ln =~ /^\#\s*((if)(?:n?def)?|elsif|else|endif)\b/;
266 ( $self, $XSS_work_idx, $BootCode_ref ) =
267 analyze_preprocessor_statements(
268 $self, $statement, $XSS_work_idx, $BootCode_ref
272 next PARAGRAPH unless @{ $self->{line} };
274 if ($XSS_work_idx && !$self->{XSStack}->[$XSS_work_idx]{varname}) {
275 # We are inside an #if, but have not yet #defined its xsubpp variable.
276 print "#define $cpp_next_tmp 1\n\n";
277 push(@{ $self->{InitFileCode} }, "#if $cpp_next_tmp\n");
278 push(@{ $BootCode_ref }, "#if $cpp_next_tmp");
279 $self->{XSStack}->[$XSS_work_idx]{varname} = $cpp_next_tmp++;
283 "Code is not inside a function"
284 ." (maybe last function was ended by a blank line "
285 ." followed by a statement on column one?)")
286 if $self->{line}->[0] =~ /^\s/;
288 # initialize info arrays
289 foreach my $member (qw(args_match var_types defaults arg_list
290 argtype_seen in_out lengthof))
292 $self->{$member} = {};
294 $self->{proto_arg} = [];
295 $self->{processing_arg_with_types} = undef;
296 $self->{proto_in_this_xsub} = undef;
297 $self->{scope_in_this_xsub} = undef;
298 $self->{interface} = undef;
299 $self->{interface_macro} = 'XSINTERFACE_FUNC';
300 $self->{interface_macro_set} = 'XSINTERFACE_FUNC_SET';
301 $self->{ProtoThisXSUB} = $self->{WantPrototypes};
302 $self->{ScopeThisXSUB} = 0;
306 $_ = shift(@{ $self->{line} });
307 while (my $kwd = $self->check_keyword("REQUIRE|PROTOTYPES|EXPORT_XSUB_SYMBOLS|FALLBACK|VERSIONCHECK|INCLUDE(?:_COMMAND)?|SCOPE")) {
308 my $method = $kwd . "_handler";
310 next PARAGRAPH unless @{ $self->{line} };
311 $_ = shift(@{ $self->{line} });
314 if ($self->check_keyword("BOOT")) {
315 check_conditional_preprocessor_statements($self);
316 push (@{ $BootCode_ref }, "#line $self->{line_no}->[@{ $self->{line_no} } - @{ $self->{line} }] \"$self->{filepathname}\"")
317 if $self->{WantLineNumbers} && $self->{line}->[0] !~ /^\s*#\s*line\b/;
318 push (@{ $BootCode_ref }, @{ $self->{line} }, "");
322 # extract return type, function name and arguments
323 ($self->{ret_type}) = tidy_type($_);
324 my $RETVAL_no_return = 1 if $self->{ret_type} =~ s/^NO_OUTPUT\s+//;
326 # Allow one-line ANSI-like declaration
327 unshift @{ $self->{line} }, $2
329 and $self->{ret_type} =~ s/^(.*?\w.*?)\s*\b(\w+\s*\(.*)/$1/s;
331 # a function definition needs at least 2 lines
332 $self->blurt("Error: Function definition too short '$self->{ret_type}'"), next PARAGRAPH
333 unless @{ $self->{line} };
335 my $externC = 1 if $self->{ret_type} =~ s/^extern "C"\s+//;
336 my $static = 1 if $self->{ret_type} =~ s/^static\s+//;
338 my $func_header = shift(@{ $self->{line} });
339 $self->blurt("Error: Cannot parse function definition from '$func_header'"), next PARAGRAPH
340 unless $func_header =~ /^(?:([\w:]*)::)?(\w+)\s*\(\s*(.*?)\s*\)\s*(const)?\s*(;\s*)?$/s;
342 my ($class, $orig_args);
343 ($class, $func_name, $orig_args) = ($1, $2, $3);
344 $class = "$4 $class" if $4;
345 ($pname = $func_name) =~ s/^($self->{Prefix})?/$self->{Packprefix}/;
347 ($clean_func_name = $func_name) =~ s/^$self->{Prefix}//;
348 $Full_func_name = "$self->{Packid}_$clean_func_name";
350 $Full_func_name = $SymSet->addsym($Full_func_name);
353 # Check for duplicate function definition
354 for my $tmp (@{ $self->{XSStack} }) {
355 next unless defined $tmp->{functions}{$Full_func_name};
356 Warn( $self, "Warning: duplicate function definition '$clean_func_name' detected");
359 $self->{XSStack}->[$XSS_work_idx]{functions}{$Full_func_name}++;
360 %{ $self->{XsubAliases} } = ();
361 %{ $self->{XsubAliasValues} } = ();
362 %{ $self->{Interfaces} } = ();
363 @{ $self->{Attributes} } = ();
364 $self->{DoSetMagic} = 1;
366 $orig_args =~ s/\\\s*/ /g; # process line continuations
369 my (@fake_INPUT_pre); # For length(s) generated variables
371 my $only_C_inlist_ref = {}; # Not in the signature of Perl function
372 if ($self->{argtypes} and $orig_args =~ /\S/) {
373 my $args = "$orig_args ,";
374 if ($args =~ /^( (??{ $C_arg }) , )* $ /x) {
375 @args = ($args =~ /\G ( (??{ $C_arg }) ) , /xg);
379 my ($arg, $default) = ($_ =~ m/ ( [^=]* ) ( (?: = .* )? ) /x);
380 my ($pre, $len_name) = ($arg =~ /(.*?) \s*
381 \b ( \w+ | length\( \s*\w+\s* \) )
383 next unless defined($pre) && length($pre);
386 if ($self->{inout} and s/^(IN|IN_OUTLIST|OUTLIST|OUT|IN_OUT)\b\s*//) {
388 $out_type = $type if $type ne 'IN';
389 $arg =~ s/^(IN|IN_OUTLIST|OUTLIST|OUT|IN_OUT)\b\s*//;
390 $pre =~ s/^(IN|IN_OUTLIST|OUTLIST|OUT|IN_OUT)\b\s*//;
393 if ($len_name =~ /^length\( \s* (\w+) \s* \)\z/x) {
394 $len_name = "XSauto_length_of_$1";
396 die "Default value on length() argument: `$_'"
399 if (length $pre or $islength) { # Has a type
401 push @fake_INPUT_pre, $arg;
404 push @fake_INPUT, $arg;
406 # warn "pushing '$arg'\n";
407 $self->{argtype_seen}->{$len_name}++;
408 $_ = "$len_name$default"; # Assigns to @args
410 $only_C_inlist_ref->{$_} = 1 if $out_type eq "OUTLIST" or $islength;
411 push @{ $outlist_ref }, $len_name if $out_type =~ /OUTLIST$/;
412 $self->{in_out}->{$len_name} = $out_type if $out_type;
416 @args = split(/\s*,\s*/, $orig_args);
417 Warn( $self, "Warning: cannot parse argument list '$orig_args', fallback to split");
421 @args = split(/\s*,\s*/, $orig_args);
423 if ($self->{inout} and s/^(IN|IN_OUTLIST|OUTLIST|IN_OUT|OUT)\b\s*//) {
425 next if $out_type eq 'IN';
426 $only_C_inlist_ref->{$_} = 1 if $out_type eq "OUTLIST";
427 if ($out_type =~ /OUTLIST$/) {
428 push @{ $outlist_ref }, undef;
430 $self->{in_out}->{$_} = $out_type;
434 if (defined($class)) {
435 my $arg0 = ((defined($static) or $func_name eq 'new')
437 unshift(@args, $arg0);
442 my $report_args = '';
444 foreach my $i (0 .. $#args) {
445 if ($args[$i] =~ s/\.\.\.//) {
447 if ($args[$i] eq '' && $i == $#args) {
448 $report_args .= ", ...";
453 if ($only_C_inlist_ref->{$args[$i]}) {
454 push @args_num, undef;
457 push @args_num, ++$num_args;
458 $report_args .= ", $args[$i]";
460 if ($args[$i] =~ /^([^=]*[^\s=])\s*=\s*(.*)/s) {
463 $self->{defaults}->{$args[$i]} = $2;
464 $self->{defaults}->{$args[$i]} =~ s/"/\\"/g;
466 $self->{proto_arg}->[$i+1] = '$';
468 my $min_args = $num_args - $extra_args;
469 $report_args =~ s/"/\\"/g;
470 $report_args =~ s/^,\s+//;
471 $self->{func_args} = assign_func_args($self, \@args, $class);
472 @{ $self->{args_match} }{@args} = @args_num;
474 my $PPCODE = grep(/^\s*PPCODE\s*:/, @{ $self->{line} });
475 my $CODE = grep(/^\s*CODE\s*:/, @{ $self->{line} });
476 # Detect CODE: blocks which use ST(n)= or XST_m*(n,v)
477 # to set explicit return values.
478 my $EXPLICIT_RETURN = ($CODE &&
479 ("@{ $self->{line} }" =~ /(\bST\s*\([^;]*=) | (\bXST_m\w+\s*\()/x ));
481 # The $ALIAS which follows is only explicitly called within the scope of
482 # process_file(). In principle, it ought to be a lexical, i.e., 'my
483 # $ALIAS' like the other nearby variables. However, implementing that
484 # change produced a slight difference in the resulting .c output in at
485 # least two distributions: B/BD/BDFOY/Crypt-Rijndael and
486 # G/GF/GFUJI/Hash-FieldHash. The difference is, arguably, an improvement
487 # in the resulting C code. Example:
489 # < GvNAME(CvGV(cv)),
491 # > "Crypt::Rijndael::encrypt",
492 # But at this point we're committed to generating the *same* C code that
493 # the current version of ParseXS.pm does. So we're declaring it as 'our'.
494 $ALIAS = grep(/^\s*ALIAS\s*:/, @{ $self->{line} });
496 my $INTERFACE = grep(/^\s*INTERFACE\s*:/, @{ $self->{line} });
498 $xsreturn = 1 if $EXPLICIT_RETURN;
500 $externC = $externC ? qq[extern "C"] : "";
502 # print function header
505 #XS_EUPXS(XS_${Full_func_name}); /* prototype to pass -Wmissing-prototypes */
506 #XS_EUPXS(XS_${Full_func_name})
514 print Q(<<"EOF") if $ALIAS;
517 print Q(<<"EOF") if $INTERFACE;
518 # dXSFUNCTION($self->{ret_type});
521 $self->{cond} = set_cond($ellipsis, $min_args, $num_args);
523 print Q(<<"EOF") if $self->{except};
531 # croak_xs_usage(cv, "$report_args");
535 # cv likely to be unused
537 # PERL_UNUSED_VAR(cv); /* -W */
541 #gcc -Wall: if an xsub has PPCODE is used
542 #it is possible none of ST, XSRETURN or XSprePUSH macros are used
543 #hence `ax' (setup by dXSARGS) is unused
544 #XXX: could breakup the dXSARGS; into dSP;dMARK;dITEMS
545 #but such a move could break third-party extensions
546 print Q(<<"EOF") if $PPCODE;
547 # PERL_UNUSED_VAR(ax); /* -Wall */
550 print Q(<<"EOF") if $PPCODE;
554 # Now do a block of some sort.
556 $self->{condnum} = 0;
557 $self->{cond} = ''; # last CASE: conditional
558 push(@{ $self->{line} }, "$END:");
559 push(@{ $self->{line_no} }, $self->{line_no}->[-1]);
561 check_conditional_preprocessor_statements();
562 while (@{ $self->{line} }) {
564 $self->CASE_handler($_) if $self->check_keyword("CASE");
569 # do initialization of input variables
570 $self->{thisdone} = 0;
571 $self->{retvaldone} = 0;
572 $self->{deferred} = "";
573 %{ $self->{arg_list} } = ();
574 $self->{gotRETVAL} = 0;
575 $self->INPUT_handler($_);
576 $self->process_keyword("INPUT|PREINIT|INTERFACE_MACRO|C_ARGS|ALIAS|ATTRS|PROTOTYPE|SCOPE|OVERLOAD");
578 print Q(<<"EOF") if $self->{ScopeThisXSUB};
583 if (!$self->{thisdone} && defined($class)) {
584 if (defined($static) or $func_name eq 'new') {
586 $self->{var_types}->{"CLASS"} = "char *";
591 printed_name => undef,
596 $self->{var_types}->{"THIS"} = "$class *";
601 printed_name => undef,
606 # These are set if OUTPUT is found and/or CODE using RETVAL
607 $self->{have_OUTPUT} = $self->{have_CODE_with_RETVAL} = 0;
611 if (/^\s*NOT_IMPLEMENTED_YET/) {
612 print "\n\tPerl_croak(aTHX_ \"$pname: not implemented yet\");\n";
616 if ($self->{ret_type} ne "void") {
617 print "\t" . map_type($self, $self->{ret_type}, 'RETVAL') . ";\n"
618 if !$self->{retvaldone};
619 $self->{args_match}->{"RETVAL"} = 0;
620 $self->{var_types}->{"RETVAL"} = $self->{ret_type};
621 my $outputmap = $self->{typemap}->get_outputmap( ctype => $self->{ret_type} );
623 if $self->{optimize} and $outputmap and $outputmap->targetable;
626 if (@fake_INPUT or @fake_INPUT_pre) {
627 unshift @{ $self->{line} }, @fake_INPUT_pre, @fake_INPUT, $_;
629 $self->{processing_arg_with_types} = 1;
630 $self->INPUT_handler($_);
632 print $self->{deferred};
634 $self->process_keyword("INIT|ALIAS|ATTRS|PROTOTYPE|INTERFACE_MACRO|INTERFACE|C_ARGS|OVERLOAD");
636 if ($self->check_keyword("PPCODE")) {
637 $self->print_section();
638 $self->death("PPCODE must be last thing") if @{ $self->{line} };
639 print "\tLEAVE;\n" if $self->{ScopeThisXSUB};
640 print "\tPUTBACK;\n\treturn;\n";
642 elsif ($self->check_keyword("CODE")) {
643 my $consumed_code = $self->print_section();
644 if ($consumed_code =~ /\bRETVAL\b/) {
645 $self->{have_CODE_with_RETVAL} = 1;
648 elsif (defined($class) and $func_name eq "DESTROY") {
650 print "delete THIS;\n";
654 if ($self->{ret_type} ne "void") {
658 if (defined($static)) {
659 if ($func_name eq 'new') {
660 $func_name = "$class";
666 elsif (defined($class)) {
667 if ($func_name eq 'new') {
668 $func_name .= " $class";
674 $func_name =~ s/^\Q$args{'s'}//
675 if exists $args{'s'};
676 $func_name = 'XSFUNCTION' if $self->{interface};
677 print "$func_name($self->{func_args});\n";
681 # do output variables
682 $self->{gotRETVAL} = 0; # 1 if RETVAL seen in OUTPUT section;
683 undef $self->{RETVAL_code} ; # code to set RETVAL (from OUTPUT section);
684 # $wantRETVAL set if 'RETVAL =' autogenerated
685 ($wantRETVAL, $self->{ret_type}) = (0, 'void') if $RETVAL_no_return;
686 undef %{ $self->{outargs} };
688 $self->process_keyword("POSTCALL|OUTPUT|ALIAS|ATTRS|PROTOTYPE|OVERLOAD");
690 # A CODE section with RETVAL, but no OUTPUT? FAIL!
691 if ($self->{have_CODE_with_RETVAL} and not $self->{have_OUTPUT} and $self->{ret_type} ne 'void') {
692 $self->Warn("Warning: Found a 'CODE' section which seems to be using 'RETVAL' but no 'OUTPUT' section.");
696 type => $self->{var_types}->{$_},
697 num => $self->{args_match}->{$_},
699 do_setmagic => $self->{DoSetMagic},
701 } ) for grep $self->{in_out}->{$_} =~ /OUT$/, keys %{ $self->{in_out} };
704 # all OUTPUT done, so now push the return value on the stack
705 if ($self->{gotRETVAL} && $self->{RETVAL_code}) {
706 print "\t$self->{RETVAL_code}\n";
708 elsif ($self->{gotRETVAL} || $wantRETVAL) {
709 my $outputmap = $self->{typemap}->get_outputmap( ctype => $self->{ret_type} );
710 my $t = $self->{optimize} && $outputmap && $outputmap->targetable;
711 # Although the '$var' declared in the next line is never explicitly
712 # used within this 'elsif' block, commenting it out leads to
713 # disaster, starting with the first 'eval qq' inside the 'elsif' block
715 # It appears that this is related to the fact that at this point the
716 # value of $t is a reference to an array whose [2] element includes
717 # '$var' as a substring:
720 my $type = $self->{ret_type};
722 if ($t and not $t->{with_size} and $t->{type} eq 'p') {
723 # PUSHp corresponds to setpvn. Treat setpv directly
724 my $what = eval qq("$t->{what}");
727 print "\tsv_setpv(TARG, $what); XSprePUSH; PUSHTARG;\n";
731 my $what = eval qq("$t->{what}");
734 my $tsize = $t->{what_size};
735 $tsize = '' unless defined $tsize;
736 $tsize = eval qq("$tsize");
738 print "\tXSprePUSH; PUSH$t->{type}($what$tsize);\n";
742 # RETVAL almost never needs SvSETMAGIC()
744 type => $self->{ret_type},
753 $xsreturn = 1 if $self->{ret_type} ne "void";
755 my $c = @{ $outlist_ref };
756 print "\tXSprePUSH;" if $c and not $prepush_done;
757 print "\tEXTEND(SP,$c);\n" if $c;
760 type => $self->{var_types}->{$_},
765 } ) for @{ $outlist_ref };
768 $self->process_keyword("CLEANUP|ALIAS|ATTRS|PROTOTYPE|OVERLOAD");
770 print Q(<<"EOF") if $self->{ScopeThisXSUB};
773 print Q(<<"EOF") if $self->{ScopeThisXSUB} and not $PPCODE;
777 # print function trailer
781 print Q(<<"EOF") if $self->{except};
784 # sprintf(errbuf, "%s: %s\\tpropagated", Xname, Xreason);
787 if ($self->check_keyword("CASE")) {
788 $self->blurt("Error: No `CASE:' at top of function")
789 unless $self->{condnum};
790 $_ = "CASE: $_"; # Restore CASE: label
793 last if $_ eq "$END:";
794 $self->death(/^$self->{BLOCK_re}/o ? "Misplaced `$1:'" : "Junk at end of function ($_)");
797 print Q(<<"EOF") if $self->{except};
799 # Perl_croak(aTHX_ errbuf);
803 print Q(<<"EOF") unless $PPCODE;
804 # XSRETURN($xsreturn);
808 print Q(<<"EOF") unless $PPCODE;
818 $self->{newXS} = "newXS";
821 # Build the prototype string for the xsub
822 if ($self->{ProtoThisXSUB}) {
823 $self->{newXS} = "newXSproto_portable";
825 if ($self->{ProtoThisXSUB} eq 2) {
826 # User has specified empty prototype
828 elsif ($self->{ProtoThisXSUB} eq 1) {
830 if ($min_args < $num_args) {
832 $self->{proto_arg}->[$min_args] .= ";";
834 push @{ $self->{proto_arg} }, "$s\@"
837 $self->{proto} = join ("", grep defined, @{ $self->{proto_arg} } );
840 # User has specified a prototype
841 $self->{proto} = $self->{ProtoThisXSUB};
843 $self->{proto} = qq{, "$self->{proto}"};
846 if (%{ $self->{XsubAliases} }) {
847 $self->{XsubAliases}->{$pname} = 0
848 unless defined $self->{XsubAliases}->{$pname};
849 while ( my ($xname, $value) = each %{ $self->{XsubAliases} }) {
850 push(@{ $self->{InitFileCode} }, Q(<<"EOF"));
851 # cv = $self->{newXS}(\"$xname\", XS_$Full_func_name, file$self->{proto});
852 # XSANY.any_i32 = $value;
856 elsif (@{ $self->{Attributes} }) {
857 push(@{ $self->{InitFileCode} }, Q(<<"EOF"));
858 # cv = $self->{newXS}(\"$pname\", XS_$Full_func_name, file$self->{proto});
859 # apply_attrs_string("$Package", cv, "@{ $self->{Attributes} }", 0);
862 elsif ($self->{interface}) {
863 while ( my ($yname, $value) = each %{ $self->{Interfaces} }) {
864 $yname = "$Package\::$yname" unless $yname =~ /::/;
865 push(@{ $self->{InitFileCode} }, Q(<<"EOF"));
866 # cv = $self->{newXS}(\"$yname\", XS_$Full_func_name, file$self->{proto});
867 # $self->{interface_macro_set}(cv,$value);
871 elsif($self->{newXS} eq 'newXS'){ # work around P5NCI's empty newXS macro
872 push(@{ $self->{InitFileCode} },
873 " $self->{newXS}(\"$pname\", XS_$Full_func_name, file$self->{proto});\n");
876 push(@{ $self->{InitFileCode} },
877 " (void)$self->{newXS}(\"$pname\", XS_$Full_func_name, file$self->{proto});\n");
879 } # END 'PARAGRAPH' 'while' loop
881 if ($self->{Overload}) { # make it findable with fetchmethod
883 #XS_EUPXS(XS_$self->{Packid}_nil); /* prototype to pass -Wmissing-prototypes */
884 #XS_EUPXS(XS_$self->{Packid}_nil)
891 unshift(@{ $self->{InitFileCode} }, <<"MAKE_FETCHMETHOD_WORK");
892 /* Making a sub named "${Package}::()" allows the package */
893 /* to be findable via fetchmethod(), and causes */
894 /* overload::Overloaded("${Package}") to return true. */
895 (void)$self->{newXS}("${Package}::()", XS_$self->{Packid}_nil, file$self->{proto});
896 MAKE_FETCHMETHOD_WORK
899 # print initialization routine
908 #XS_EXTERNAL(boot_$self->{Module_cname}); /* prototype to pass -Wmissing-prototypes */
909 #XS_EXTERNAL(boot_$self->{Module_cname})
921 #Under 5.8.x and lower, newXS is declared in proto.h as expecting a non-const
922 #file name argument. If the wrong qualifier is used, it causes breakage with
923 #C++ compilers and warnings with recent gcc.
924 #-Wall: if there is no $Full_func_name there are no xsubs in this .xs
926 print Q(<<"EOF") if $Full_func_name;
927 ##if (PERL_REVISION == 5 && PERL_VERSION < 9)
928 # char* file = __FILE__;
930 # const char* file = __FILE__;
937 # PERL_UNUSED_VAR(cv); /* -W */
938 # PERL_UNUSED_VAR(items); /* -W */
939 ##ifdef XS_APIVERSION_BOOTCHECK
940 # XS_APIVERSION_BOOTCHECK;
944 print Q(<<"EOF") if $self->{WantVersionChk};
945 # XS_VERSION_BOOTCHECK;
949 print Q(<<"EOF") if defined $self->{xsubaliases} or defined $self->{interfaces};
955 print Q(<<"EOF") if ($self->{Overload});
956 # /* register the overloading (type 'A') magic */
957 # PL_amagic_generation++;
958 # /* The magic for overload gets a GV* via gv_fetchmeth as */
959 # /* mentioned above, and looks in the SV* slot of it for */
960 # /* the "fallback" status. */
962 # get_sv( "${Package}::()", TRUE ),
967 print @{ $self->{InitFileCode} };
969 print Q(<<"EOF") if defined $self->{xsubaliases} or defined $self->{interfaces};
973 if (@{ $BootCode_ref }) {
974 print "\n /* Initialisation Section */\n\n";
975 @{ $self->{line} } = @{ $BootCode_ref };
976 $self->print_section();
977 print "\n /* End of Initialisation Section */\n\n";
981 ##if (PERL_REVISION == 5 && PERL_VERSION >= 9)
982 # if (PL_unitcheckav)
983 # call_list(PL_scopestack_ix, PL_unitcheckav);
993 warn("Please specify prototyping behavior for $self->{filename} (see perlxs manual)\n")
994 unless $self->{ProtoUsed};
998 untie *PSEUDO_STDOUT if tied *PSEUDO_STDOUT;
1004 sub report_error_count { $self->{errors} }
1006 # Input: ($self, $_, @{ $self->{line} }) == unparsed input.
1007 # Output: ($_, @{ $self->{line} }) == (rest of line, following lines).
1008 # Return: the matched keyword if found, otherwise 0
1011 $_ = shift(@{ $self->{line} }) while !/\S/ && @{ $self->{line} };
1012 s/^(\s*)($_[0])\s*:\s*(?:#.*)?/$1/s && $2;
1018 # the "do" is required for right semantics
1019 do { $_ = shift(@{ $self->{line} }) } while !/\S/ && @{ $self->{line} };
1021 my $consumed_code = '';
1023 print("#line ", $self->{line_no}->[@{ $self->{line_no} } - @{ $self->{line} } -1], " \"$self->{filepathname}\"\n")
1024 if $self->{WantLineNumbers} && !/^\s*#\s*line\b/ && !/^#if XSubPPtmp/;
1025 for (; defined($_) && !/^$self->{BLOCK_re}/o; $_ = shift(@{ $self->{line} })) {
1027 $consumed_code .= "$_\n";
1029 print 'ExtUtils::ParseXS::CountLines'->end_marker, "\n" if $self->{WantLineNumbers};
1031 return $consumed_code;
1038 while (!/\S/ && @{ $self->{line} }) {
1039 $_ = shift(@{ $self->{line} });
1042 for (; defined($_) && !/^$self->{BLOCK_re}/o; $_ = shift(@{ $self->{line} })) {
1049 sub process_keyword {
1050 my($self, $pattern) = @_;
1052 while (my $kwd = $self->check_keyword($pattern)) {
1053 my $method = $kwd . "_handler";
1061 $self->blurt("Error: `CASE:' after unconditional `CASE:'")
1062 if $self->{condnum} && $self->{cond} eq '';
1064 trim_whitespace($self->{cond});
1065 print " ", ($self->{condnum}++ ? " else" : ""), ($self->{cond} ? " if ($self->{cond})\n" : "\n");
1072 for (; !/^$self->{BLOCK_re}/o; $_ = shift(@{ $self->{line} })) {
1073 last if /^\s*NOT_IMPLEMENTED_YET/;
1074 next unless /\S/; # skip blank lines
1076 trim_whitespace($_);
1079 # remove trailing semicolon if no initialisation
1080 s/\s*;$//g unless /[=;+].*\S/;
1082 # Process the length(foo) declarations
1083 if (s/^([^=]*)\blength\(\s*(\w+)\s*\)\s*$/$1 XSauto_length_of_$2=NO_INIT/x) {
1084 print "\tSTRLEN\tSTRLEN_length_of_$2;\n";
1085 $self->{lengthof}->{$2} = undef;
1086 $self->{deferred} .= "\n\tXSauto_length_of_$2 = STRLEN_length_of_$2;\n";
1089 # check for optional initialisation code
1091 $var_init = $1 if s/\s*([=;+].*)$//s;
1092 $var_init =~ s/"/\\"/g;
1093 # *sigh* It's valid to supply explicit input typemaps in the argument list...
1094 my $is_overridden_typemap = $var_init =~ /ST\s*\(|\$arg\b/;
1097 my ($var_type, $var_addr, $var_name) = /^(.*?[^&\s])\s*(\&?)\s*\b(\w+)$/s
1098 or $self->blurt("Error: invalid argument declaration '$ln'"), next;
1100 # Check for duplicate definitions
1101 $self->blurt("Error: duplicate definition of argument '$var_name' ignored"), next
1102 if $self->{arg_list}->{$var_name}++
1103 or defined $self->{argtype_seen}->{$var_name} and not $self->{processing_arg_with_types};
1105 $self->{thisdone} |= $var_name eq "THIS";
1106 $self->{retvaldone} |= $var_name eq "RETVAL";
1107 $self->{var_types}->{$var_name} = $var_type;
1108 # XXXX This check is a safeguard against the unfinished conversion of
1109 # generate_init(). When generate_init() is fixed,
1110 # one can use 2-args map_type() unconditionally.
1112 if ($var_type =~ / \( \s* \* \s* \) /x) {
1113 # Function pointers are not yet supported with output_init()!
1114 print "\t" . map_type($self, $var_type, $var_name);
1118 print "\t" . map_type($self, $var_type, undef);
1121 $self->{var_num} = $self->{args_match}->{$var_name};
1123 if ($self->{var_num}) {
1124 my $typemap = $self->{typemap}->get_typemap(ctype => $var_type);
1125 $self->death("Could not find a typemap for C type '$var_type'")
1126 if not $typemap and not $is_overridden_typemap;
1127 $self->{proto_arg}->[$self->{var_num}] = ($typemap && $typemap->proto) || "\$";
1129 $self->{func_args} =~ s/\b($var_name)\b/&$1/ if $var_addr;
1130 if ($var_init =~ /^[=;]\s*NO_INIT\s*;?\s*$/
1131 or $self->{in_out}->{$var_name} and $self->{in_out}->{$var_name} =~ /^OUT/
1132 and $var_init !~ /\S/) {
1133 if ($printed_name) {
1137 print "\t$var_name;\n";
1140 elsif ($var_init =~ /\S/) {
1143 num => $self->{var_num},
1146 printed_name => $printed_name,
1149 elsif ($self->{var_num}) {
1152 num => $self->{var_num},
1154 printed_name => $printed_name,
1163 sub OUTPUT_handler {
1165 $self->{have_OUTPUT} = 1;
1168 for (; !/^$self->{BLOCK_re}/o; $_ = shift(@{ $self->{line} })) {
1170 if (/^\s*SETMAGIC\s*:\s*(ENABLE|DISABLE)\s*/) {
1171 $self->{DoSetMagic} = ($1 eq "ENABLE" ? 1 : 0);
1174 my ($outarg, $outcode) = /^\s*(\S+)\s*(.*?)\s*$/s;
1175 $self->blurt("Error: duplicate OUTPUT argument '$outarg' ignored"), next
1176 if $self->{outargs}->{$outarg}++;
1177 if (!$self->{gotRETVAL} and $outarg eq 'RETVAL') {
1178 # deal with RETVAL last
1179 $self->{RETVAL_code} = $outcode;
1180 $self->{gotRETVAL} = 1;
1183 $self->blurt("Error: OUTPUT $outarg not an argument"), next
1184 unless defined($self->{args_match}->{$outarg});
1185 $self->blurt("Error: No input definition for OUTPUT argument '$outarg' - ignored"), next
1186 unless defined $self->{var_types}->{$outarg};
1187 $self->{var_num} = $self->{args_match}->{$outarg};
1189 print "\t$outcode\n";
1190 print "\tSvSETMAGIC(ST(" , $self->{var_num} - 1 , "));\n" if $self->{DoSetMagic};
1194 type => $self->{var_types}->{$outarg},
1195 num => $self->{var_num},
1197 do_setmagic => $self->{DoSetMagic},
1201 delete $self->{in_out}->{$outarg} # No need to auto-OUTPUT
1202 if exists $self->{in_out}->{$outarg} and $self->{in_out}->{$outarg} =~ /OUT$/;
1206 sub C_ARGS_handler {
1209 my $in = $self->merge_section();
1211 trim_whitespace($in);
1212 $self->{func_args} = $in;
1215 sub INTERFACE_MACRO_handler {
1218 my $in = $self->merge_section();
1220 trim_whitespace($in);
1221 if ($in =~ /\s/) { # two
1222 ($self->{interface_macro}, $self->{interface_macro_set}) = split ' ', $in;
1225 $self->{interface_macro} = $in;
1226 $self->{interface_macro_set} = 'UNKNOWN_CVT'; # catch later
1228 $self->{interface} = 1; # local
1229 $self->{interfaces} = 1; # global
1232 sub INTERFACE_handler {
1235 my $in = $self->merge_section();
1237 trim_whitespace($in);
1239 foreach (split /[\s,]+/, $in) {
1240 my $iface_name = $_;
1241 $iface_name =~ s/^$self->{Prefix}//;
1242 $self->{Interfaces}->{$iface_name} = $_;
1245 # XSFUNCTION = $self->{interface_macro}($self->{ret_type},cv,XSANY.any_dptr);
1247 $self->{interface} = 1; # local
1248 $self->{interfaces} = 1; # global
1251 sub CLEANUP_handler {
1253 $self->print_section();
1256 sub PREINIT_handler {
1258 $self->print_section();
1261 sub POSTCALL_handler {
1263 $self->print_section();
1268 $self->print_section();
1276 # Parse alias definitions
1278 # alias = value alias = value ...
1280 while ($line =~ s/^\s*([\w:]+)\s*=\s*(\w+)\s*//) {
1281 my ($alias, $value) = ($1, $2);
1282 my $orig_alias = $alias;
1284 # check for optional package definition in the alias
1285 $alias = $self->{Packprefix} . $alias if $alias !~ /::/;
1287 # check for duplicate alias name & duplicate value
1288 Warn( $self, "Warning: Ignoring duplicate alias '$orig_alias'")
1289 if defined $self->{XsubAliases}->{$alias};
1291 Warn( $self, "Warning: Aliases '$orig_alias' and '$self->{XsubAliasValues}->{$value}' have identical values")
1292 if $self->{XsubAliasValues}->{$value};
1294 $self->{xsubaliases} = 1;
1295 $self->{XsubAliases}->{$alias} = $value;
1296 $self->{XsubAliasValues}->{$value} = $orig_alias;
1299 blurt( $self, "Error: Cannot parse ALIAS definitions from '$orig'")
1307 for (; !/^$self->{BLOCK_re}/o; $_ = shift(@{ $self->{line} })) {
1309 trim_whitespace($_);
1310 push @{ $self->{Attributes} }, $_;
1318 for (; !/^$self->{BLOCK_re}/o; $_ = shift(@{ $self->{line} })) {
1320 trim_whitespace($_);
1321 $self->get_aliases($_) if $_;
1325 sub OVERLOAD_handler {
1329 for (; !/^$self->{BLOCK_re}/o; $_ = shift(@{ $self->{line} })) {
1331 trim_whitespace($_);
1332 while ( s/^\s*([\w:"\\)\+\-\*\/\%\<\>\.\&\|\^\!\~\{\}\=]+)\s*//) {
1333 $self->{Overload} = 1 unless $self->{Overload};
1334 my $overload = "$Package\::(".$1;
1335 push(@{ $self->{InitFileCode} },
1336 " (void)$self->{newXS}(\"$overload\", XS_$Full_func_name, file$self->{proto});\n");
1341 sub FALLBACK_handler {
1345 # the rest of the current line should contain either TRUE,
1348 trim_whitespace($_);
1350 TRUE => "&PL_sv_yes", 1 => "&PL_sv_yes",
1351 FALSE => "&PL_sv_no", 0 => "&PL_sv_no",
1352 UNDEF => "&PL_sv_undef",
1355 # check for valid FALLBACK value
1356 $self->death("Error: FALLBACK: TRUE/FALSE/UNDEF") unless exists $map{uc $_};
1358 $self->{Fallback} = $map{uc $_};
1362 sub REQUIRE_handler {
1364 # the rest of the current line should contain a version number
1367 trim_whitespace($Ver);
1369 $self->death("Error: REQUIRE expects a version number")
1372 # check that the version number is of the form n.n
1373 $self->death("Error: REQUIRE: expected a number, got '$Ver'")
1374 unless $Ver =~ /^\d+(\.\d*)?/;
1376 $self->death("Error: xsubpp $Ver (or better) required--this is only $VERSION.")
1377 unless $VERSION >= $Ver;
1380 sub VERSIONCHECK_handler {
1384 # the rest of the current line should contain either ENABLE or
1387 trim_whitespace($_);
1389 # check for ENABLE/DISABLE
1390 $self->death("Error: VERSIONCHECK: ENABLE/DISABLE")
1391 unless /^(ENABLE|DISABLE)/i;
1393 $self->{WantVersionChk} = 1 if $1 eq 'ENABLE';
1394 $self->{WantVersionChk} = 0 if $1 eq 'DISABLE';
1398 sub PROTOTYPE_handler {
1404 $self->death("Error: Only 1 PROTOTYPE definition allowed per xsub")
1405 if $self->{proto_in_this_xsub}++;
1407 for (; !/^$self->{BLOCK_re}/o; $_ = shift(@{ $self->{line} })) {
1410 trim_whitespace($_);
1411 if ($_ eq 'DISABLE') {
1412 $self->{ProtoThisXSUB} = 0;
1414 elsif ($_ eq 'ENABLE') {
1415 $self->{ProtoThisXSUB} = 1;
1418 # remove any whitespace
1420 $self->death("Error: Invalid prototype '$_'")
1421 unless valid_proto_string($_);
1422 $self->{ProtoThisXSUB} = C_string($_);
1426 # If no prototype specified, then assume empty prototype ""
1427 $self->{ProtoThisXSUB} = 2 unless $specified;
1429 $self->{ProtoUsed} = 1;
1436 $self->death("Error: Only 1 SCOPE declaration allowed per xsub")
1437 if $self->{scope_in_this_xsub}++;
1439 trim_whitespace($_);
1440 $self->death("Error: SCOPE: ENABLE/DISABLE")
1441 unless /^(ENABLE|DISABLE)\b/i;
1442 $self->{ScopeThisXSUB} = ( uc($1) eq 'ENABLE' );
1445 sub PROTOTYPES_handler {
1449 # the rest of the current line should contain either ENABLE or
1452 trim_whitespace($_);
1454 # check for ENABLE/DISABLE
1455 $self->death("Error: PROTOTYPES: ENABLE/DISABLE")
1456 unless /^(ENABLE|DISABLE)/i;
1458 $self->{WantPrototypes} = 1 if $1 eq 'ENABLE';
1459 $self->{WantPrototypes} = 0 if $1 eq 'DISABLE';
1460 $self->{ProtoUsed} = 1;
1463 sub EXPORT_XSUB_SYMBOLS_handler {
1467 # the rest of the current line should contain either ENABLE or
1470 trim_whitespace($_);
1472 # check for ENABLE/DISABLE
1473 $self->death("Error: EXPORT_XSUB_SYMBOLS: ENABLE/DISABLE")
1474 unless /^(ENABLE|DISABLE)/i;
1476 my $xs_impl = $1 eq 'ENABLE' ? 'XS_EXTERNAL' : 'XS_INTERNAL';
1480 ##define XS_EUPXS(name) $xs_impl(name)
1488 # Save the current file context.
1489 push(@{ $self->{XSStack} }, {
1491 LastLine => $self->{lastline},
1492 LastLineNo => $self->{lastline_no},
1493 Line => $self->{line},
1494 LineNo => $self->{line_no},
1495 Filename => $self->{filename},
1496 Filepathname => $self->{filepathname},
1497 Handle => $self->{FH},
1498 IsPipe => scalar($self->{filename} =~ /\|\s*$/),
1504 sub INCLUDE_handler {
1507 # the rest of the current line should contain a valid filename
1509 trim_whitespace($_);
1511 $self->death("INCLUDE: filename missing")
1514 $self->death("INCLUDE: output pipe is illegal")
1517 # simple minded recursion detector
1518 $self->death("INCLUDE loop detected")
1519 if $self->{IncludedFiles}->{$_};
1521 ++$self->{IncludedFiles}->{$_} unless /\|\s*$/;
1523 if (/\|\s*$/ && /^\s*perl\s/) {
1524 Warn( $self, "The INCLUDE directive with a command is discouraged." .
1525 " Use INCLUDE_COMMAND instead! In particular using 'perl'" .
1526 " in an 'INCLUDE: ... |' directive is not guaranteed to pick" .
1527 " up the correct perl. The INCLUDE_COMMAND directive allows" .
1528 " the use of \$^X as the currently running perl, see" .
1529 " 'perldoc perlxs' for details.");
1532 $self->PushXSStack();
1534 $self->{FH} = Symbol::gensym();
1537 open ($self->{FH}, '<', $_) or $self->death("Cannot open '$_': $!");
1541 #/* INCLUDE: Including '$_' from '$self->{filename}' */
1545 $self->{filename} = $_;
1546 $self->{filepathname} = ( $^O =~ /^mswin/i )
1547 ? qq($self->{dir}/$self->{filename}) # See CPAN RT #61908: gcc doesn't like backslashes on win32?
1548 : File::Spec->catfile($self->{dir}, $self->{filename});
1550 # Prime the pump by reading the first
1553 # skip leading blank lines
1554 while (readline($self->{FH})) {
1555 last unless /^\s*$/;
1558 $self->{lastline} = $_;
1559 $self->{lastline_no} = $.;
1564 my @args = split /\s+/, $cmd;
1567 $_ = q(").$_.q(") if !/^\"/ && length($_) > 0;
1569 return join (' ', ($cmd, @args));
1572 sub INCLUDE_COMMAND_handler {
1575 # the rest of the current line should contain a valid command
1577 trim_whitespace($_);
1579 $_ = QuoteArgs($_) if $^O eq 'VMS';
1581 $self->death("INCLUDE_COMMAND: command missing")
1584 $self->death("INCLUDE_COMMAND: pipes are illegal")
1585 if /^\s*\|/ or /\|\s*$/;
1587 $self->PushXSStack( IsPipe => 1 );
1589 $self->{FH} = Symbol::gensym();
1591 # If $^X is used in INCLUDE_COMMAND, we know it's supposed to be
1592 # the same perl interpreter as we're currently running
1596 open ($self->{FH}, "-|", $_)
1597 or $self->death( $self, "Cannot run command '$_' to include its output: $!");
1601 #/* INCLUDE_COMMAND: Including output of '$_' from '$self->{filename}' */
1605 $self->{filename} = $_;
1606 $self->{filepathname} = $self->{filename};
1607 #$self->{filepathname} =~ s/\"/\\"/g; # Fails? See CPAN RT #53938: MinGW Broken after 2.21
1608 $self->{filepathname} =~ s/\\/\\\\/g; # Works according to reporter of #53938
1610 # Prime the pump by reading the first
1613 # skip leading blank lines
1614 while (readline($self->{FH})) {
1615 last unless /^\s*$/;
1618 $self->{lastline} = $_;
1619 $self->{lastline_no} = $.;
1625 return 0 unless $self->{XSStack}->[-1]{type} eq 'file';
1627 my $data = pop @{ $self->{XSStack} };
1628 my $ThisFile = $self->{filename};
1629 my $isPipe = $data->{IsPipe};
1631 --$self->{IncludedFiles}->{$self->{filename}}
1636 $self->{FH} = $data->{Handle};
1637 # $filename is the leafname, which for some reason isused for diagnostic
1638 # messages, whereas $filepathname is the full pathname, and is used for
1640 $self->{filename} = $data->{Filename};
1641 $self->{filepathname} = $data->{Filepathname};
1642 $self->{lastline} = $data->{LastLine};
1643 $self->{lastline_no} = $data->{LastLineNo};
1644 @{ $self->{line} } = @{ $data->{Line} };
1645 @{ $self->{line_no} } = @{ $data->{LineNo} };
1647 if ($isPipe and $? ) {
1648 --$self->{lastline_no};
1649 print STDERR "Error reading from pipe '$ThisFile': $! in $self->{filename}, line $self->{lastline_no}\n" ;
1655 #/* INCLUDE: Returning to '$self->{filename}' from '$ThisFile' */
1665 $text =~ s/\[\[/{/g;
1666 $text =~ s/\]\]/}/g;
1670 # Read next xsub into @{ $self->{line} } from ($lastline, readline($self->{FH})).
1675 $self->death("Error: Unterminated `#if/#ifdef/#ifndef'")
1676 if !defined $self->{lastline} && $self->{XSStack}->[-1]{type} eq 'if';
1677 @{ $self->{line} } = ();
1678 @{ $self->{line_no} } = ();
1679 return $self->PopFile() if !defined $self->{lastline};
1681 if ($self->{lastline} =~
1682 /^MODULE\s*=\s*([\w:]+)(?:\s+PACKAGE\s*=\s*([\w:]+))?(?:\s+PREFIX\s*=\s*(\S+))?\s*$/) {
1684 $Package = defined($2) ? $2 : ''; # keep -w happy
1685 $self->{Prefix} = defined($3) ? $3 : ''; # keep -w happy
1686 $self->{Prefix} = quotemeta $self->{Prefix};
1687 ($self->{Module_cname} = $Module) =~ s/\W/_/g;
1688 ($self->{Packid} = $Package) =~ tr/:/_/;
1689 $self->{Packprefix} = $Package;
1690 $self->{Packprefix} .= "::" if $self->{Packprefix} ne "";
1691 $self->{lastline} = "";
1695 # Skip embedded PODs
1696 while ($self->{lastline} =~ /^=/) {
1697 while ($self->{lastline} = readline($self->{FH})) {
1698 last if ($self->{lastline} =~ /^=cut\s*$/);
1700 $self->death("Error: Unterminated pod") unless $self->{lastline};
1701 $self->{lastline} = readline($self->{FH});
1702 chomp $self->{lastline};
1703 $self->{lastline} =~ s/^\s+$//;
1706 # This chunk of code strips out (and parses) embedded TYPEMAP blocks
1707 # which support a HEREdoc-alike block syntax.
1708 # This is special cased from the usual paragraph-handler logic
1709 # due to the HEREdoc-ish syntax.
1710 if ($self->{lastline} =~ /^TYPEMAP\s*:\s*<<\s*(?:(["'])(.+?)\1|([^\s'"]+))\s*;?\s*$/) {
1711 my $end_marker = quotemeta(defined($1) ? $2 : $3);
1714 $self->{lastline} = readline($self->{FH});
1715 $self->death("Error: Unterminated typemap") if not defined $self->{lastline};
1716 last if $self->{lastline} =~ /^$end_marker\s*$/;
1717 push @tmaplines, $self->{lastline};
1720 my $tmapcode = join "", @tmaplines;
1721 my $tmap = ExtUtils::Typemaps->new(
1722 string => $tmapcode,
1723 lineno_offset => $self->current_line_number()+1,
1724 fake_filename => $self->{filename},
1726 $self->{typemap}->merge(typemap => $tmap, replace => 1);
1728 last unless defined($self->{lastline} = readline($self->{FH}));
1732 if ($self->{lastline} !~ /^\s*#/ ||
1734 # ANSI: if ifdef ifndef elif else endif define undef
1736 # gcc: warning include_next
1738 # others: ident (gcc notes that some cpps have this one)
1739 $self->{lastline} =~ /^#[ \t]*(?:(?:if|ifn?def|elif|else|endif|define|undef|pragma|error|warning|line\s+\d+|ident)\b|(?:include(?:_next)?|import)\s*["<].*[>"])/) {
1740 last if $self->{lastline} =~ /^\S/ && @{ $self->{line} } && $self->{line}->[-1] eq "";
1741 push(@{ $self->{line} }, $self->{lastline});
1742 push(@{ $self->{line_no} }, $self->{lastline_no});
1745 # Read next line and continuation lines
1746 last unless defined($self->{lastline} = readline($self->{FH}));
1747 $self->{lastline_no} = $.;
1749 $self->{lastline} .= $tmp_line
1750 while ($self->{lastline} =~ /\\$/ && defined($tmp_line = readline($self->{FH})));
1752 chomp $self->{lastline};
1753 $self->{lastline} =~ s/^\s+$//;
1755 pop(@{ $self->{line} }), pop(@{ $self->{line_no} }) while @{ $self->{line} } && $self->{line}->[-1] eq "";
1760 my $argsref = shift;
1761 my ($type, $num, $var, $init, $printed_name) = (
1766 $argsref->{printed_name}
1768 my $arg = "ST(" . ($num - 1) . ")";
1770 if ( $init =~ /^=/ ) {
1771 if ($printed_name) {
1772 eval qq/print " $init\\n"/;
1775 eval qq/print "\\t$var $init\\n"/;
1780 if ( $init =~ s/^\+// && $num ) {
1785 printed_name => $printed_name,
1788 elsif ($printed_name) {
1793 eval qq/print "\\t$var;\\n"/;
1797 $self->{deferred} .= eval qq/"\\n\\t$init\\n"/;
1803 my $argsref = shift;
1804 my ($type, $num, $var, $printed_name) = (
1808 $argsref->{printed_name},
1810 my $arg = "ST(" . ($num - 1) . ")";
1811 my ($argoff, $ntype);
1814 my $typemaps = $self->{typemap};
1816 $type = tidy_type($type);
1817 $self->blurt("Error: '$type' not in typemap"), return
1818 unless $typemaps->get_typemap(ctype => $type);
1820 ($ntype = $type) =~ s/\s*\*/Ptr/g;
1822 ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//;
1823 my $typem = $typemaps->get_typemap(ctype => $type);
1824 my $xstype = $typem->xstype;
1825 $xstype =~ s/OBJ$/REF/ if $func_name =~ /DESTROY$/;
1826 if ($xstype eq 'T_PV' and exists $self->{lengthof}->{$var}) {
1827 print "\t$var" unless $printed_name;
1828 print " = ($type)SvPV($arg, STRLEN_length_of_$var);\n";
1829 die "default value not supported with length(NAME) supplied"
1830 if defined $self->{defaults}->{$var};
1833 $type =~ tr/:/_/ unless $self->{hiertype};
1835 my $inputmap = $typemaps->get_inputmap(xstype => $xstype);
1836 $self->blurt("Error: No INPUT definition for type '$type', typekind '" . $type->xstype . "' found"), return
1837 unless defined $inputmap;
1839 my $expr = $inputmap->cleaned_code;
1840 # Note: This gruesome bit either needs heavy rethinking or documentation. I vote for the former. --Steffen
1841 if ($expr =~ /DO_ARRAY_ELEM/) {
1842 my $subtypemap = $typemaps->get_typemap(ctype => $subtype);
1843 $self->blurt("Error: C type '$subtype' not in typemap"), return
1845 my $subinputmap = $typemaps->get_inputmap(xstype => $subtypemap->xstype);
1846 $self->blurt("Error: No INPUT definition for type '$subtype', typekind '" . $subtypemap->xstype . "' found"), return
1847 unless $subinputmap;
1848 my $subexpr = $subinputmap->cleaned_code;
1849 $subexpr =~ s/\$type/\$subtype/g;
1850 $subexpr =~ s/ntype/subtype/g;
1851 $subexpr =~ s/\$arg/ST(ix_$var)/g;
1852 $subexpr =~ s/\n\t/\n\t\t/g;
1853 $subexpr =~ s/is not of (.*\")/[arg %d] is not of $1, ix_$var + 1/g;
1854 $subexpr =~ s/\$var/${var}[ix_$var - $argoff]/;
1855 $expr =~ s/DO_ARRAY_ELEM/$subexpr/;
1857 if ($expr =~ m#/\*.*scope.*\*/#i) { # "scope" in C comments
1858 $self->{ScopeThisXSUB} = 1;
1860 if (defined($self->{defaults}->{$var})) {
1861 $expr =~ s/(\t+)/$1 /g;
1863 if ($printed_name) {
1867 eval qq/print "\\t$var;\\n"/;
1870 if ($self->{defaults}->{$var} eq 'NO_INIT') {
1871 $self->{deferred} .= eval qq/"\\n\\tif (items >= $num) {\\n$expr;\\n\\t}\\n"/;
1874 $self->{deferred} .= eval qq/"\\n\\tif (items < $num)\\n\\t $var = $self->{defaults}->{$var};\\n\\telse {\\n$expr;\\n\\t}\\n"/;
1878 elsif ($self->{ScopeThisXSUB} or $expr !~ /^\s*\$var =/) {
1879 if ($printed_name) {
1883 eval qq/print "\\t$var;\\n"/;
1886 $self->{deferred} .= eval qq/"\\n$expr;\\n"/;
1890 die "panic: do not know how to handle this branch for function pointers"
1892 eval qq/print "$expr;\\n"/;
1897 sub generate_output {
1898 my $argsref = shift;
1899 my ($type, $num, $var, $do_setmagic, $do_push) = (
1903 $argsref->{do_setmagic},
1906 my $arg = "ST(" . ($num - ($num != 0)) . ")";
1909 my $typemaps = $self->{typemap};
1911 $type = tidy_type($type);
1912 if ($type =~ /^array\(([^,]*),(.*)\)/) {
1913 print "\t$arg = sv_newmortal();\n";
1914 print "\tsv_setpvn($arg, (char *)$var, $2 * sizeof($1));\n";
1915 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
1918 my $typemap = $typemaps->get_typemap(ctype => $type);
1919 $self->blurt("Could not find a typemap for C type '$type'"), return
1921 my $outputmap = $typemaps->get_outputmap(xstype => $typemap->xstype);
1922 $self->blurt("Error: No OUTPUT definition for type '$type', typekind '" . $typemap->xstype . "' found"), return
1924 ($ntype = $type) =~ s/\s*\*/Ptr/g;
1925 $ntype =~ s/\(\)//g;
1927 ($subtype = $ntype) =~ s/(?:Array)?(?:Ptr)?$//;
1929 my $expr = $outputmap->cleaned_code;
1930 if ($expr =~ /DO_ARRAY_ELEM/) {
1931 my $subtypemap = $typemaps->get_typemap(ctype => $subtype);
1932 $self->blurt("Could not find a typemap for C type '$subtype'"), return
1934 my $suboutputmap = $typemaps->get_outputmap(xstype => $subtypemap->xstype);
1935 $self->blurt("Error: No OUTPUT definition for type '$subtype', typekind '" . $subtypemap->xstype . "' found"), return
1936 unless $suboutputmap;
1937 my $subexpr = $suboutputmap->cleaned_code;
1938 $subexpr =~ s/ntype/subtype/g;
1939 $subexpr =~ s/\$arg/ST(ix_$var)/g;
1940 $subexpr =~ s/\$var/${var}[ix_$var]/g;
1941 $subexpr =~ s/\n\t/\n\t\t/g;
1942 $expr =~ s/DO_ARRAY_ELEM\n/$subexpr/;
1943 eval "print qq\a$expr\a";
1945 print "\t\tSvSETMAGIC(ST(ix_$var));\n" if $do_setmagic;
1947 elsif ($var eq 'RETVAL') {
1948 if ($expr =~ /^\t\$arg = new/) {
1949 # We expect that $arg has refcnt 1, so we need to
1951 eval "print qq\a$expr\a";
1953 print "\tsv_2mortal(ST($num));\n";
1954 print "\tSvSETMAGIC(ST($num));\n" if $do_setmagic;
1956 elsif ($expr =~ /^\s*\$arg\s*=/) {
1957 # We expect that $arg has refcnt >=1, so we need
1959 eval "print qq\a$expr\a";
1961 print "\tsv_2mortal(ST(0));\n";
1962 print "\tSvSETMAGIC(ST(0));\n" if $do_setmagic;
1965 # Just hope that the entry would safely write it
1966 # over an already mortalized value. By
1967 # coincidence, something like $arg = &sv_undef
1969 print "\tST(0) = sv_newmortal();\n";
1970 eval "print qq\a$expr\a";
1972 # new mortals don't have set magic
1976 print "\tPUSHs(sv_newmortal());\n";
1978 eval "print qq\a$expr\a";
1980 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
1982 elsif ($arg =~ /^ST\(\d+\)$/) {
1983 eval "print qq\a$expr\a";
1985 print "\tSvSETMAGIC($arg);\n" if $do_setmagic;
1992 # vim: ts=2 sw=2 et: