periodic checkpoint

src/stdlib/functions/FunctionBase.cs

@@ -0,0 +1,31 @@
+using csmic;
+using ValueType = csmic.ValueType;
+
+namespace stdlib.functions
+{
+    public abstract class FunctionBase
+    {
+        public virtual IEnumerable<FunctionArgument> ExpectedArguments { get; }
+
+        internal bool ArgumentCheck(params FunctionArgument[] args)
+        {
+            if (args == null || args.Length != this.ExpectedArguments.Count())
+            {
+                return false;
+            }
+
+            var expectedArgumentsArray = this.ExpectedArguments.ToArray();
+            for (int i = 0; i < args.Length; i++)
+            {
+                var expectedArgument = expectedArgumentsArray[i];
+                var argument = args[i];
+                if(argument.Value == null || argument.Value.Type != expectedArgument.Value.Type)
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+    }
+}