1 files changed, 92 insertions, 0 deletions
diff --git a/source4/build/pidl/needed.pm b/source4/build/pidl/needed.pm
new file mode 100644
index 0000000000..301b85e51c
--- /dev/null
+++ b/source4/build/pidl/needed.pm
@@ -0,0 +1,92 @@
+###################################################
+# Samba4 parser generator for IDL structures
+# Copyright tridge@samba.org 2000-2004
+# Copyright jelmer@samba.org 2004
+# released under the GNU GPL
+
+package needed;
+
+use strict;
+
+# the list of needed functions
+my %needed;
+
+sub NeededFunction($)
+{
+	my $fn = shift;
+	$needed{"pull_$fn->{NAME}"} = 1;
+	$needed{"push_$fn->{NAME}"} = 1;
+	foreach my $e (@{$fn->{DATA}}) {
+		$e->{PARENT} = $fn;
+		$needed{"pull_$e->{TYPE}"} = 1;
+		$needed{"push_$e->{TYPE}"} = 1;
+	}
+}
+
+sub NeededTypedef($)
+{
+	my $t = shift;
+	if (util::has_property($t->{DATA}, "public")) {
+		$needed{"pull_$t->{NAME}"} = 1;
+		$needed{"push_$t->{NAME}"} = 1;		
+	}
+
+	if ($t->{DATA}->{TYPE} eq "STRUCT") {
+		if (util::has_property($t->{DATA}, "gensize")) {
+			$needed{"ndr_size_$t->{NAME}"} = 1;
+		}
+
+		for my $e (@{$t->{DATA}->{ELEMENTS}}) {
+			$e->{PARENT} = $t->{DATA};
+			if ($needed{"pull_$t->{NAME}"}) {
+				$needed{"pull_$e->{TYPE}"} = 1;
+			}
+			if ($needed{"push_$t->{NAME}"}) {
+				$needed{"push_$e->{TYPE}"} = 1;
+			}
+			if ($needed{"ndr_size_$t->{NAME}"}) {
+				$needed{"ndr_size_$e->{TYPE}"} = 1;
+			}
+		}
+	}
+	if ($t->{DATA}->{TYPE} eq "UNION") {
+		for my $e (@{$t->{DATA}->{DATA}}) {
+			$e->{PARENT} = $t->{DATA};
+			if ($e->{TYPE} eq "UNION_ELEMENT") {
+				if ($needed{"pull_$t->{NAME}"}) {
+					$needed{"pull_$e->{DATA}->{TYPE}"} = 1;
+				}
+				if ($needed{"push_$t->{NAME}"}) {
+					$needed{"push_$e->{DATA}->{TYPE}"} = 1;
+				}
+				if ($needed{"ndr_size_$t->{NAME}"}) {
+					$needed{"ndr_size_$e->{DATA}->{TYPE}"} = 1;
+				}
+			}
+		}
+	}
+}
+
+#####################################################################
+# work out what parse functions are needed
+sub BuildNeeded($)
+{
+	my($interface) = shift;
+	my($data) = $interface->{DATA};
+	foreach my $d (@{$data}) {
+		($d->{TYPE} eq "FUNCTION") && 
+		    NeededFunction($d);
+	}
+	foreach my $d (reverse @{$data}) {
+		($d->{TYPE} eq "TYPEDEF") &&
+		    NeededTypedef($d);
+	}
+}
+
+sub is_needed($)
+{
+	my $name = shift;
+	return $needed{$name};
+}
+
+1;