Add template creation tool for caller classes

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@7565 e03df62e-2008-0410-955e-edbf42e46eb7

diff --git a/tools/create_templates.pl b/tools/create_templates.pl
new file mode 100755 (executable)
index 0000000..e205cd0
--- /dev/null
+++ b/tools/create_templates.pl
@@ -0,0 +1,80 @@
+#!/usr/bin/perl
+
+#       +------------------------------------+
+#       | Inspire Internet Relay Chat Daemon |
+#       +------------------------------------+
+#
+#  InspIRCd: (C) 2002-2007 InspIRCd Development Team
+# See: http://www.inspircd.org/wiki/index.php/Credits
+#
+#  This program is free but copyrighted software; see
+#          the file COPYING for details.
+#
+# ---------------------------------------------------
+
+use strict;
+use warnings;
+
+my $maxparams = shift;
+
+die "You must supply a number of parameters to generate headers allowing for!" unless(defined $maxparams);
+die "You must request a non-negative parameter limit!" unless($maxparams >= 0);
+
+print STDERR "Generating headerfile for a maximium of $maxparams parameters\n";
+
+# First generate the HanderBase family
+
+my @templatetypes = ('ReturnType');
+for(my $i = 0; $i <= $maxparams; $i++)
+{
+       push @templatetypes, "Param" . $i if($i > 0);
+       print "template <typename " . join(', typename ', @templatetypes) . "> class CoreExport HandlerBase" . $i . "\n";
+       print "{\n";
+       print " public:\n";
+       print " virtual ReturnType Call(" . join(', ', @templatetypes[1..$#templatetypes]) . ") = 0;\n";
+       print " virtual ~HandlerBase" . $i . "() { }\n";
+       print "};\n\n";
+}
+
+# And now the caller family
+
+print "template <typename HandlerType> class CoreExport caller\n";
+print "{\n";
+print " public:\n";
+print "        HandlerType* target;\n\n";
+print "        caller(HandlerType* initial)\n";
+print "        : target(initial)\n";
+print "        { }\n\n";
+print "        virtual ~caller() { }\n\n";
+print "        caller& operator=(HandlerType* newtarget)\n";
+print "        {\n";
+print "                target = newtarget;\n";
+print "                return *this;\n";
+print "        }\n";
+print "};\n\n";
+
+
+
+
+@templatetypes = ('ReturnType');
+for(my $i = 0; $i <= $maxparams; $i++)
+{
+       push @templatetypes, "Param" . $i if($i > 0);
+       
+       my $handlertype = "HandlerBase" . $i . "<" . join(', ', @templatetypes) . ">";
+       my @templatetypepairs = map { $_ . " " . lc($_) }  @templatetypes;
+       my @lctemplatetypes = map(lc, @templatetypes);
+       
+       print "template <typename " . join(', typename ', @templatetypes) . "> class CoreExport caller" . $i . " : public caller< " . $handlertype . " >\n";
+       print "{\n";
+       print " public:\n";
+       print " caller" . $i . "(" . $handlertype . "* initial)\n";
+       print " : caller< " . $handlertype. " >::caller(initial)\n";
+       print " { }\n\n";
+       print " virtual ReturnType operator() (" . join(', ', @templatetypepairs[1..$#templatetypepairs]) . ")\n";
+       print " {\n";
+       print "         return this->target->Call(" . join(', ', @lctemplatetypes[1..$#lctemplatetypes]) . ");\n";
+       print " }\n";
+       print "};\n\n";
+}
+