Catch insufficient arguments

src/component/gsc.cpp

@@ -13,6 +13,32 @@
 
 namespace gsc
 {
+	function_args::function_args(std::vector<scripting::script_value> values)
+		: values_(values)
+	{
+	}
+
+	unsigned int function_args::size() const
+	{
+		return this->values_.size();
+	}
+
+	std::vector<scripting::script_value> function_args::get_raw() const
+	{
+		return this->values_;
+	}
+
+	scripting::script_value function_args::get(const int index) const
+	{
+		if (index >= this->values_.size())
+		{
+			throw std::runtime_error(utils::string::va("Insufficient arguments, got %i expected %i", 
+				this->values_.size(), index + 1));
+		}
+		
+		return this->values_[index];
+	}
+
 	std::unordered_map<unsigned, script_function> functions;
 	std::unordered_map<unsigned, script_method> methods;
 
@@ -50,7 +76,7 @@ namespace gsc
 
 		function_args get_arguments()
 		{
-			function_args args;
+			std::vector<scripting::script_value> args;
 
 			const auto top = game::scr_VmPub->top;
 

src/component/gsc.hpp

@@ -2,7 +2,22 @@
 
 namespace gsc
 {
-	using function_args = std::vector<scripting::script_value>;
+	class function_args
+	{
+	public:
+		function_args(std::vector<scripting::script_value>);
+
+		unsigned int function_args::size() const;
+		std::vector<scripting::script_value> function_args::get_raw() const;
+		scripting::script_value get(const int index) const;
+
+		scripting::script_value operator[](const int index) const
+		{
+			return this->get(index);
+		}
+	private:
+		std::vector<scripting::script_value> values_;
+	};
 
 	using builtin_function = void(*)();
 	using builtin_method = void(*)(game::scr_entref_t);

src/component/json.cpp

@@ -143,7 +143,7 @@ namespace json
 		{
 			gsc::function::add("array", [](gsc::function_args args)
 			{
-				scripting::array array(args);
+				scripting::array array(args.get_raw());
 				return array.get_raw();
 			});