Added nodes related to the list and array operations

2026-04-23 19:15:08 +05:30
parent 1cb9838942
commit baa7ae5579
10 changed files with 796 additions and 4 deletions
--- a/Examples/Nodify.Calculator/Execution/Handlers/NodeHandlers.cs
+++ b/Examples/Nodify.Calculator/Execution/Handlers/NodeHandlers.cs
@@ -340,6 +340,108 @@ namespace Nodify.Calculator.Execution.Handlers
        }
    }

+    // ─────────────────────────────────────────────────────────────────────────────
+    // List operation execution handlers
+    // ─────────────────────────────────────────────────────────────────────────────
+
+    internal sealed class ListAddExecutionHandler : INodeExecutionHandler
+    {
+        public bool CanHandle(OperationViewModel node, ExecutionContext ctx)
+            => node is SystemOperationViewModel sys && sys.SystemOperationType == SystemOperations.LIST_ADD;
+
+        public void Execute(OperationViewModel node, ExecutionContext ctx)
+        {
+            var listJson = ListExecHelper.ReadInput(node, ctx, "List");
+            var itemJson = ListExecHelper.ReadInput(node, ctx, "Item");
+            var list = ListExecHelper.ParseList(listJson);
+            list.Add(itemJson != null ? JToken.Parse(itemJson) : JValue.CreateNull());
+            var result = list.ToString(Formatting.None);
+            ctx.Outputs[node.NodeId] = result;
+            ctx.Variables[node.NodeId] = result;
+            ctx.Log($"[List Add] Added item. Count={list.Count}");
+        }
+    }
+
+    internal sealed class ListRemoveExecutionHandler : INodeExecutionHandler
+    {
+        public bool CanHandle(OperationViewModel node, ExecutionContext ctx)
+            => node is SystemOperationViewModel sys && sys.SystemOperationType == SystemOperations.LIST_REMOVE;
+
+        public void Execute(OperationViewModel node, ExecutionContext ctx)
+        {
+            var listJson = ListExecHelper.ReadInput(node, ctx, "List");
+            var indexStr = ListExecHelper.ReadInput(node, ctx, "Index");
+            var list = ListExecHelper.ParseList(listJson);
+            int index = int.TryParse(indexStr, out var i) ? i : -1;
+            if (index >= 0 && index < list.Count)
+                list.RemoveAt(index);
+            else
+                ctx.Log($"[List Remove] Index {index} out of range (Count={list.Count})", logType.Warning);
+            var result = list.ToString(Formatting.None);
+            ctx.Outputs[node.NodeId] = result;
+            ctx.Variables[node.NodeId] = result;
+        }
+    }
+
+    internal sealed class ListUpdateExecutionHandler : INodeExecutionHandler
+    {
+        public bool CanHandle(OperationViewModel node, ExecutionContext ctx)
+            => node is SystemOperationViewModel sys && sys.SystemOperationType == SystemOperations.LIST_UPDATE;
+
+        public void Execute(OperationViewModel node, ExecutionContext ctx)
+        {
+            var listJson = ListExecHelper.ReadInput(node, ctx, "List");
+            var indexStr = ListExecHelper.ReadInput(node, ctx, "Index");
+            var itemJson = ListExecHelper.ReadInput(node, ctx, "Item");
+            var list = ListExecHelper.ParseList(listJson);
+            int index = int.TryParse(indexStr, out var i) ? i : -1;
+            if (index >= 0 && index < list.Count)
+                list[index] = itemJson != null ? JToken.Parse(itemJson) : JValue.CreateNull();
+            else
+                ctx.Log($"[List Update] Index {index} out of range (Count={list.Count})", logType.Warning);
+            var result = list.ToString(Formatting.None);
+            ctx.Outputs[node.NodeId] = result;
+            ctx.Variables[node.NodeId] = result;
+        }
+    }
+
+    internal sealed class ListClearExecutionHandler : INodeExecutionHandler
+    {
+        public bool CanHandle(OperationViewModel node, ExecutionContext ctx)
+            => node is SystemOperationViewModel sys && sys.SystemOperationType == SystemOperations.LIST_CLEAR;
+
+        public void Execute(OperationViewModel node, ExecutionContext ctx)
+        {
+            var result = "[]";
+            ctx.Outputs[node.NodeId] = result;
+            ctx.Variables[node.NodeId] = result;
+            ctx.Log("[List Clear] Cleared list");
+        }
+    }
+
+    /// <summary>Helper for reading list node inputs and parsing JSON arrays.</summary>
+    internal static class ListExecHelper
+    {
+        public static string ReadInput(OperationViewModel node, ExecutionContext ctx, string title)
+        {
+            var conn = ctx.Connections.FirstOrDefault(c =>
+                c.Input.Operation == node
+                && (c.Input.Title ?? "").StartsWith(title, StringComparison.OrdinalIgnoreCase)
+                && c.Input.Shape != ConnectorShape.Triangle);
+            if (conn == null) return null;
+            if (ctx.Outputs.TryGetValue(conn.OutputNodeId, out var val))
+                return val;
+            return null;
+        }
+
+        public static JArray ParseList(string json)
+        {
+            if (string.IsNullOrEmpty(json)) return new JArray();
+            try { return JArray.Parse(json); }
+            catch { return new JArray(); }
+        }
+    }
+
    // ─────────────────────────────────────────────────────────────────────────────
    // Default / fallback: API call
    // ─────────────────────────────────────────────────────────────────────────────