add syntax for skipping not required args

Author: Elektryk-Andrzej

Code/ArgumentSystem/MethodArgumentDispatcher.cs

@@ -50,24 +50,34 @@ private static ConverterInfo GetConverterInfo(Type argType)
         throw new AndrzejFuckedUpException($"No suitable GetConvertSolution method found for {argType.GetAccurateName()}.");
     }
 
-    public TryGet<ArgumentValueInfo> TryGetValueInfo(BaseToken token, int index)
+    public TryGet<ArgumentValueInfo?> TryGetValueInfo(BaseToken token, int index)
     {
         Result rs = $"Argument {index + 1} '{token.RawRep}' for method {method.Name} is invalid.";
 
         Argument arg;
         if (index >= method.ExpectedArguments.Length)
         {
-            if (method.ExpectedArguments.LastOrDefault()?.ConsumesRemainingValues != true)
+            if (method.ExpectedArguments.LastOrDefault() is not { ConsumesRemainingValues: true } lastArg)
             {
                 return rs + $"Method does not expect more than {method.ExpectedArguments.Length} arguments.";
             }
 
-            arg = method.ExpectedArguments.Last();
+            arg = lastArg;
         }
         else
         {
             arg = method.ExpectedArguments[index];
         }
+
+        if (token.RawRep == "_")
+        {
+            if (arg.IsRequired)
+            {
+                return rs + "This argument is required, you cannot skip providing it by using the floor character.";
+            }
+
+            return TryGet<ArgumentValueInfo?>.Success(null);
+        }
 
         arg.Script = method.Script;
         var argType = arg.GetType();

Code/ContextSystem/Contexts/MethodContext.cs

@@ -37,15 +37,19 @@ public class MethodContext(MethodToken methodToken) : YieldingContext, IMayRetur
     public override TryAddTokenRes TryAddToken(BaseToken token)
     {
         Log.Debug($"'{Method.Name}' method is now receiving token '{token.RawRep}' ({token.GetType().AccurateName})");
+
+        if (Dispatcher.TryGetValueInfo(token, _providedArguments)
+            .HasErrored(out var error, out var possibleArgumentInfo))
+        {
+            return TryAddTokenRes.Error($"Value '{token.RawRep}' is not a valid argument: {error}");
+        }
 
-        if (Dispatcher.TryGetValueInfo(token, _providedArguments).HasErrored(out var error, out var skeleton))
-            return TryAddTokenRes.Error(
-                $"Value '{token.RawRep}' is not a valid argument: " +
-                $"{error}");
+        if (!possibleArgumentInfo.HasValue) return TryAddTokenRes.Continue();
+        var argInfo = possibleArgumentInfo.Value;
 
-        Log.Debug($"skeleton {skeleton.Name} {skeleton.ArgumentType} registered");
+        Log.Debug($"skeleton {argInfo.Name} {argInfo.ArgumentType} registered");
 
-        Method.Args.Add(skeleton);
+        Method.Args.Add(argInfo);
         _providedArguments++;
         return TryAddTokenRes.Continue();
     }