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#! perl |
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|
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# used to automatically create accessors/mutators and method interfaces |
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# to C++ classes for Perl. |
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# also write data structures as JSON object, for reflection |
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|
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use JSON::XS; |
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|
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my $class = shift; |
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my $curclass = ""; |
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my (@scalar_member, @array_member); |
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|
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# convert c member name to perl |
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sub c2perl($) { |
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local $_ = shift; |
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|
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s/^([^.]+)\.\1_/$1\_/g; # tcpi.tcpi_xxx => tcpi_xxx |
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|
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$_ |
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} |
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|
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for my $file (@ARGV) { |
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open my $fh, "<:utf8", $file |
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or die "$file: $!"; |
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|
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while (<$fh>) { |
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next if /^\s*\//; # skip lines starting with / |
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if ($curclass eq $class) { |
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while (/ACC\s*\(R([WO])\s*,\s*([^)\]]+)(?:\[(\S+)\])?\)/g) { |
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if ($3) { |
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push @array_member, [$1, $2, $3]; |
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} else { |
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push @scalar_member, [$1, $2]; |
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} |
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} |
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if (/MTH \s+ ([^(]*?) \s* ([A-Za-z_0-9]+) \s* \(([^)]*)\)/x) { |
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push @method_member, [$1, $2, $3]; |
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} |
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} |
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while (/INTERFACE_CLASS\s*\((\S+)\)/g) { |
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$curclass = $1; |
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} |
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} |
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} |
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|
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for (@method_member) { |
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my ($rettype, $name, $params) = @$_; |
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|
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if ($rettype =~ s/static\s+//) { |
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my $args = join ", ", $params =~ m/.*?([a-zA-Z_0-9]+)(?:,\s*|$)/g; |
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if ($rettype ne "void") { |
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print "$rettype\n$name ($params)\n", |
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"\tCODE:\n", |
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"\tRETVAL = $class\::$name ($args);\n", |
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"\tOUTPUT:\n", |
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"\tRETVAL\n"; |
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} else { |
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print "$rettype\n$name ($params)\n", |
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"\tCODE:\n", |
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"\t$class\::$name ($args);\n", |
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} |
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} else { |
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print "$rettype\n$class\::$name ($params)\n"; |
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} |
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|
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print "\n"; |
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} |
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|
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if (@scalar_member) { |
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print "SV *$scalar_member[0][1] ($class *self, SV *newval = 0)\n"; |
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print "\tPROTOTYPE: \$;\$\n"; |
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|
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if (@scalar_member > 1) { |
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print "\tALIAS:\n"; |
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for (1 .. $#scalar_member) { |
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print "\t\t" . (c2perl $scalar_member[$_][1]) . "\t= $_\n"; |
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} |
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} |
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|
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print "\tCODE:\n"; |
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|
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my $ix = @scalar_member == 1 ? 0 : "ix"; |
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|
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# read |
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print "\tif (GIMME_V == G_VOID)\n", |
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"\t RETVAL = &PL_sv_undef;\n", |
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"\telse\n", |
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"\t switch ($ix)\n", |
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"\t {\n", |
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(map "\t case $_: RETVAL = to_sv (self->$scalar_member[$_][1]); break;\n", |
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0 .. $#scalar_member), |
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"\t default: croak (\"scalar_member is write-only\");\n", |
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"\t };\n"; |
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|
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# write |
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print "\tif (newval)\n", |
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"\t switch ($ix)\n", |
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"\t {\n", |
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(map "\t case $_: sv_to (newval, self->$scalar_member[$_][1]); break;\n", |
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grep $scalar_member[$_][0] eq "W", |
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0 .. $#scalar_member), |
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"\t default: croak (\"scalar_member is read-only\");\n", |
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"\t };\n"; |
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|
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print "\tOUTPUT: RETVAL\n\n"; |
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} |
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|
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if (@array_member) { |
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print "SV *$array_member[0][1] ($class *self, int idx, SV *newval = 0)\n"; |
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print "\tPROTOTYPE: \$;\$\n"; |
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|
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if (@array_member > 1) { |
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print "\tALIAS:\n"; |
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for (1 .. $#array_member) { |
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print "\t\t" . (c2perl $array_member[$_][1]) . "\t= $_\n"; |
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} |
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} |
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|
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print "\tCODE:\n"; |
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|
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print "\tif (idx < 0) croak (\"negative array index\");\n"; |
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|
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my $ix = @array_member == 1 ? 0 : "ix"; |
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|
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# range |
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print "\t switch ($ix)\n", |
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"\t {\n", |
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(map "\t case $_: if (idx >= $array_member[$_][2]) croak (\"array index out of bounds\"); break;\n", |
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0 .. $#array_member), |
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"\t };\n"; |
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|
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# read |
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print "\tif (GIMME_V == G_VOID)\n", |
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"\t RETVAL = &PL_sv_undef;\n", |
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"\telse\n", |
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"\t switch ($ix)\n", |
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"\t {\n", |
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(map "\t case $_: RETVAL = to_sv (self->$array_member[$_][1] [idx]); break;\n", |
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0 .. $#array_member), |
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"\t default: croak (\"array_member is write-only\");\n", |
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"\t };\n"; |
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|
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# write |
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print "\tif (newval)\n", |
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"\t switch ($ix)\n", |
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"\t {\n", |
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(map "\t case $_: sv_to (newval, self->$array_member[$_][1] [idx]); break;\n", |
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grep $array_member[$_][0] eq "W", |
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0 .. $#array_member), |
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"\t default: croak (\"array_member is read-only\");\n", |
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"\t };\n"; |
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|
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print "\tOUTPUT: RETVAL\n\n"; |
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} |
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|
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my $json = JSON::XS->new->utf8->encode ({ |
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class => $class, |
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methods => \@method_member, |
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scalars => \@scalar_member, |
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arrays => \@array_member, |
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}); |
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|
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$json = join "\n", map { |
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my $part = $_; |
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$part =~ s/(["\\])/\\$1/g; |
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"\"$part\"" |
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} unpack "(a80)*", $json; |
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|
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print "BOOT:\n", |
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"\tav_push (av_reflect, newSVpv ($json, 0));\n\n"; |
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