gras: added arg check with nice warning to callable and factory

2 files changed, 14 insertions, 0 deletions

diff --git a/lib/callable.cpp b/lib/callable.cpp
index a7bc7da..59ada7f 100644
--- a/lib/callable.cpp
+++ b/lib/callable.cpp
@@ -3,6 +3,7 @@
 #include <gras/callable.hpp>
 #include <boost/foreach.hpp>
 #include <boost/shared_ptr.hpp>
+#include <boost/format.hpp>
 #include <stdexcept>
 #include <map>
 
@@ -62,3 +63,9 @@ CallableRegistryEntry::~CallableRegistryEntry(void)
 {
     //NOP
 }
+
+void CallableRegistryEntry::arg_check(const PMCList &args, const size_t nargs)
+{
+    if (args.size() != nargs) throw std::runtime_error(str(boost::format(
+        "callable expected %u arguments but for %u") % nargs % args.size()));
+}
diff --git a/lib/factory.cpp b/lib/factory.cpp
index 5c405f3..35b1b24 100644
--- a/lib/factory.cpp
+++ b/lib/factory.cpp
@@ -1,6 +1,7 @@
 // Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
 
 #include <gras/factory.hpp>
+#include <boost/format.hpp>
 #include <boost/shared_ptr.hpp>
 #include <boost/thread/mutex.hpp>
 #include <stdexcept>
@@ -18,6 +19,12 @@ FactoryRegistryEntry::~FactoryRegistryEntry(void)
     //NOP
 }
 
+void FactoryRegistryEntry::arg_check(const PMCList &args, const size_t nargs)
+{
+    if (args.size() != nargs) throw std::runtime_error(str(boost::format(
+        "factory expected %u arguments but for %u") % nargs % args.size()));
+}
+
 typedef std::map<std::string, boost::shared_ptr<FactoryRegistryEntry> > FactoryRegistryType;
 
 static FactoryRegistryType &get_factory_registry(void)