+sub print_tievar_subs {
+ my($fh, $name, $type) = @_;
+ print $fh <<END;
+I32
+_get_$name(IV index, SV *sv) {
+ dSP;
+ PUSHMARK(SP);
+ XPUSHs(sv);
+ PUTBACK;
+ (void)call_pv("$module\::_get_$name", G_DISCARD);
+ return (I32)0;
+}
+
+I32
+_set_$name(IV index, SV *sv) {
+ dSP;
+ PUSHMARK(SP);
+ XPUSHs(sv);
+ PUTBACK;
+ (void)call_pv("$module\::_set_$name", G_DISCARD);
+ return (I32)0;
+}
+
+END
+}
+
+sub print_tievar_xsubs {
+ my($fh, $name, $type) = @_;
+ print $fh <<END;
+void
+_tievar_$name(sv)
+ SV* sv
+ PREINIT:
+ struct ufuncs uf;
+ CODE:
+ uf.uf_val = &_get_$name;
+ uf.uf_set = &_set_$name;
+ uf.uf_index = (IV)&_get_$name;
+ sv_magic(sv, 0, 'U', (char*)&uf, sizeof(uf));
+
+void
+_get_$name(THIS)
+ $type THIS = NO_INIT
+ CODE:
+ THIS = $name;
+ OUTPUT:
+ SETMAGIC: DISABLE
+ THIS
+
+void
+_set_$name(THIS)
+ $type THIS
+ CODE:
+ $name = THIS;
+
+END
+}
+
+sub print_accessors {
+ my($fh, $name, $struct) = @_;
+ return unless defined $struct && $name !~ /\s|_ANON/;
+ $name = normalize_type($name);
+ my $ptrname = normalize_type("$name *");
+ print $fh <<"EOF";
+
+MODULE = $module PACKAGE = ${name} $prefix
+
+$name *
+_to_ptr(THIS)
+ $name THIS = NO_INIT
+ PROTOTYPE: \$
+ CODE:
+ if (sv_derived_from(ST(0), "$name")) {
+ STRLEN len;
+ char *s = SvPV((SV*)SvRV(ST(0)), len);
+ if (len != sizeof(THIS))
+ croak("Size \%d of packed data != expected \%d",
+ len, sizeof(THIS));
+ RETVAL = ($name *)s;
+ }
+ else
+ croak("THIS is not of type $name");
+ OUTPUT:
+ RETVAL
+
+$name
+new(CLASS)
+ char *CLASS = NO_INIT
+ PROTOTYPE: \$
+ CODE:
+ Zero((void*)&RETVAL, sizeof(RETVAL), char);
+ OUTPUT:
+ RETVAL
+
+MODULE = $module PACKAGE = ${name}Ptr $prefix
+
+EOF
+ my @items = @$struct;
+ while (@items) {
+ my $item = shift @items;
+ if ($item->[0] =~ /_ANON/) {
+ if (defined $item->[2]) {
+ push @items, map [
+ @$_[0, 1], "$item->[2]_$_->[2]", "$item->[2].$_->[2]",
+ ], @{ $structs{$item->[0]} };
+ } else {
+ push @items, @{ $structs{$item->[0]} };
+ }
+ } else {
+ my $type = normalize_type($item->[0]);
+ my $ttype = $structs{$type} ? normalize_type("$type *") : $type;
+ print $fh <<"EOF";
+$ttype
+$item->[2](THIS, __value = NO_INIT)
+ $ptrname THIS
+ $type __value
+ PROTOTYPE: \$;\$
+ CODE:
+ if (items > 1)
+ THIS->$item->[-1] = __value;
+ RETVAL = @{[
+ $type eq $ttype ? "THIS->$item->[-1]" : "&(THIS->$item->[-1])"
+ ]};
+ OUTPUT:
+ RETVAL
+
+EOF
+ }
+ }
+}
+
+sub accessor_docs {
+ my($name, $struct) = @_;
+ return unless defined $struct && $name !~ /\s|_ANON/;
+ $name = normalize_type($name);
+ my $ptrname = $name . 'Ptr';
+ my @items = @$struct;
+ my @list;
+ while (@items) {
+ my $item = shift @items;
+ if ($item->[0] =~ /_ANON/) {
+ if (defined $item->[2]) {
+ push @items, map [
+ @$_[0, 1], "$item->[2]_$_->[2]", "$item->[2].$_->[2]",
+ ], @{ $structs{$item->[0]} };
+ } else {
+ push @items, @{ $structs{$item->[0]} };
+ }
+ } else {
+ push @list, $item->[2];
+ }
+ }
+ my $methods = (join '(...)>, C<', @list) . '(...)';
+
+ my $pod = <<"EOF";
+#
+#=head2 Object and class methods for C<$name>/C<$ptrname>
+#
+#The principal Perl representation of a C object of type C<$name> is an
+#object of class C<$ptrname> which is a reference to an integer
+#representation of a C pointer. To create such an object, one may use
+#a combination
+#
+# my \$buffer = $name->new();
+# my \$obj = \$buffer->_to_ptr();
+#
+#This exersizes the following two methods, and an additional class
+#C<$name>, the internal representation of which is a reference to a
+#packed string with the C structure. Keep in mind that \$buffer should
+#better survive longer than \$obj.
+#
+#=over
+#
+#=item C<\$object_of_type_$name-E<gt>_to_ptr()>
+#
+#Converts an object of type C<$name> to an object of type C<$ptrname>.
+#
+#=item C<$name-E<gt>new()>
+#
+#Creates an empty object of type C<$name>. The corresponding packed
+#string is zeroed out.
+#
+#=item C<$methods>
+#
+#return the current value of the corresponding element if called
+#without additional arguments. Set the element to the supplied value
+#(and return the new value) if called with an additional argument.
+#
+#Applicable to objects of type C<$ptrname>.
+#
+#=back
+#
+EOF
+ $pod =~ s/^\#//gm;
+ return $pod;
+}
+
https://perl5.git.perl.org / perl5.git / blobdiff