Committed everything

Unity/Alternate Genre Jam/Assets/Ink/InkLibs/InkCompiler/ParsedHierarchy/Knot.cs

@@ -0,0 +1,35 @@
+using System.Collections.Generic;
+
+namespace Ink.Parsed
+{
+	public class Knot : FlowBase
+	{
+        public override FlowLevel flowLevel { get { return FlowLevel.Knot; } }
+
+        public Knot (Identifier name, List<Parsed.Object> topLevelObjects, List<Argument> arguments, bool isFunction) : base(name, topLevelObjects, arguments, isFunction)
+		{
+		}
+
+        public override void ResolveReferences (Story context)
+        {
+            base.ResolveReferences (context);
+
+            var parentStory = this.story;
+
+            // Enforce rule that stitches must not have the same
+            // name as any knots that exist in the story
+            foreach (var stitchNamePair in subFlowsByName) {
+                var stitchName = stitchNamePair.Key;
+
+                var knotWithStitchName = parentStory.ContentWithNameAtLevel (stitchName, FlowLevel.Knot, false);
+                if (knotWithStitchName) {
+                    var stitch = stitchNamePair.Value;
+                    var errorMsg = string.Format ("Stitch '{0}' has the same name as a knot (on {1})", stitch.identifier, knotWithStitchName.debugMetadata);
+                    Error(errorMsg, stitch);
+                }
+            }
+        }
+
+	}
+}
+