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|
###################################################
# check that a parsed IDL file is valid
# Copyright tridge@samba.org 2003
# released under the GNU GPL
package IdlValidator;
use Data::Dumper;
use strict;
#####################################################################
# signal a fatal validation error
sub fatal($)
{
my $s = shift;
print "$s\n";
die "IDL is not valid\n";
}
sub el_name($)
{
my $e = shift;
if ($e->{PARENT} && $e->{PARENT}->{NAME}) {
return "$e->{PARENT}->{NAME}.$e->{NAME}";
}
if ($e->{PARENT} && $e->{PARENT}->{PARENT}->{NAME}) {
return "$e->{PARENT}->{PARENT}->{NAME}.$e->{NAME}";
}
if ($e->{PARENT}) {
return "$e->{PARENT}->{NAME}.$e->{NAME}";
}
return $e->{NAME};
}
#####################################################################
# parse a struct
sub ValidElement($)
{
my $e = shift;
if (util::has_property($e, "ptr")) {
fatal(el_name($e) . " : pidl does not support full NDR pointers yet\n");
}
# Check whether switches are used correctly.
if (my $switch = util::has_property($e, "switch_is")) {
my $e2 = util::find_sibling($e, $switch);
my $type = typelist::getType($e->{TYPE});
if (defined($type) and $type->{DATA}->{TYPE} ne "UNION") {
fatal(el_name($e) . ": switch_is() used on non-union type $e->{TYPE} which is a $type->{DATA}->{TYPE}");
}
if (!util::has_property($type, "nodiscriminant") and defined($e2)) {
my $discriminator_type = util::has_property($type, "switch_type");
$discriminator_type = "uint32" unless defined ($discriminator_type);
if ($e2->{TYPE} ne $discriminator_type) {
print el_name($e) . ": Warning: switch_is() is of type $e2->{TYPE}, while discriminator type for union $type->{NAME} is $discriminator_type\n";
}
}
}
if (util::has_property($e, "size_is") and not defined ($e->{ARRAY_LEN})) {
fatal(el_name($e) . " : size_is() on non-array element");
}
if (util::has_property($e, "length_is") and not defined ($e->{ARRAY_LEN})) {
fatal(el_name($e) . " : length_is() on non-array element");
}
if (!$e->{POINTERS} && (
util::has_property($e, "ptr") or
util::has_property($e, "unique") or
util::has_property($e, "relative") or
util::has_property($e, "ref"))) {
fatal(el_name($e) . " : pointer properties on non-pointer element\n");
}
}
#####################################################################
# parse a struct
sub ValidStruct($)
{
my($struct) = shift;
foreach my $e (@{$struct->{ELEMENTS}}) {
if (util::has_property($e, "ref")) {
fatal(el_name($e) . " : embedded ref pointers are not supported yet\n");
}
$e->{PARENT} = $struct;
ValidElement($e);
}
}
#####################################################################
# parse a union
sub ValidUnion($)
{
my($union) = shift;
if (util::has_property($union->{PARENT}, "nodiscriminant") and util::has_property($union->{PARENT}, "switch_type")) {
fatal($union->{PARENT}->{NAME} . ": switch_type() on union without discriminant");
}
foreach my $e (@{$union->{ELEMENTS}}) {
$e->{PARENT} = $union;
if (defined($e->{PROPERTIES}->{default}) and
defined($e->{PROPERTIES}->{case})) {
fatal "Union member $e->{NAME} can not have both default and case properties!\n";
}
unless (defined ($e->{PROPERTIES}->{default}) or
defined ($e->{PROPERTIES}->{case})) {
fatal "Union member $e->{NAME} must have default or case property\n";
}
if (util::has_property($e, "ref")) {
fatal(el_name($e) . " : embedded ref pointers are not supported yet\n");
}
ValidElement($e);
}
}
#####################################################################
# parse a typedef
sub ValidTypedef($)
{
my($typedef) = shift;
my $data = $typedef->{DATA};
$data->{PARENT} = $typedef;
if (ref($data) eq "HASH") {
if ($data->{TYPE} eq "STRUCT") {
ValidStruct($data);
}
if ($data->{TYPE} eq "UNION") {
ValidUnion($data);
}
}
}
#####################################################################
# parse a function
sub ValidFunction($)
{
my($fn) = shift;
foreach my $e (@{$fn->{ELEMENTS}}) {
$e->{PARENT} = $fn;
if (util::has_property($e, "ref") && !$e->{POINTERS}) {
fatal "[ref] variables must be pointers ($fn->{NAME}/$e->{NAME})\n";
}
ValidElement($e);
}
}
#####################################################################
# parse the interface definitions
sub ValidInterface($)
{
my($interface) = shift;
my($data) = $interface->{DATA};
if (util::has_property($interface, "pointer_default") &&
$interface->{PROPERTIES}->{pointer_default} eq "ptr") {
fatal "Full pointers are not supported yet\n";
}
if (util::has_property($interface, "object")) {
if(util::has_property($interface, "version") &&
$interface->{PROPERTIES}->{version} != 0) {
fatal "Object interfaces must have version 0.0 ($interface->{NAME})\n";
}
if(!defined($interface->{BASE}) &&
not ($interface->{NAME} eq "IUnknown")) {
fatal "Object interfaces must all derive from IUnknown ($interface->{NAME})\n";
}
}
foreach my $d (@{$data}) {
($d->{TYPE} eq "TYPEDEF") &&
ValidTypedef($d);
($d->{TYPE} eq "FUNCTION") &&
ValidFunction($d);
}
}
#####################################################################
# parse a parsed IDL into a C header
sub Validate($)
{
my($idl) = shift;
foreach my $x (@{$idl}) {
($x->{TYPE} eq "INTERFACE") &&
ValidInterface($x);
}
}
1;
|
