src/pages/VisProgPage/visualProgrammingUI/EditorWarnings.tsx

@@ -0,0 +1,95 @@
+
+
+// --| Type definitions |--
+
+export type NodeId = string;
+export type WarningType =
+  | 'MISSING_INPUT'
+  | 'MISSING_OUTPUT'
+  | string
+export type WarningSeverity =
+  | 'INFO' // Acceptable, but probably not desirable
+  | 'WARNING' // Prevents running program, should be fixed before running program is allowed
+
+
+export type EditorWarning = {
+  nodeId: NodeId;
+  type: WarningType;
+  severity: WarningSeverity;
+  description: string;
+  handleId?: string;
+};
+
+/**
+ * either a single warningType, or a scoped warningKey.
+ *
+ * supported-scopes:
+ * - `handle`
+ */
+export type WarningKey =
+  | WarningType // for warnings that can only occur once per node
+  | { type: WarningType, handleId: string }; // for warnings that can occur on a per-handle basis
+
+export type WarningRegistry = Map<NodeId, Map<WarningKey, EditorWarning>>;
+export type SeverityIndex = Map<WarningSeverity, Set<string>>;
+
+export type EditorWarningRegistry = {
+  editorWarningRegistry: WarningRegistry;
+  severityIndex: SeverityIndex;
+
+  getWarnings: () => EditorWarning[];
+
+  getWarningsBySeverity: (warningSeverity: WarningSeverity) => EditorWarning[];
+
+  /**
+   * checks if there are no warnings of breaking severity
+   * @returns {boolean}
+   */
+  isProgramValid: () => boolean;
+
+  /**
+   * registers a warning to the warningRegistry and the SeverityIndex
+   * @param {EditorWarning} warning
+   */
+  registerWarning: (
+    warning: EditorWarning
+  ) => void;
+
+  /**
+   * unregisters a warning from the warningRegistry and the SeverityIndex
+   * @param {EditorWarning} warning
+   */
+  unregisterWarning: (
+    nodeId: NodeId,
+    warningKey: WarningKey,
+  ) => void
+
+  /**
+   * unregisters warnings from the warningRegistry and the SeverityIndex
+   * @param {EditorWarning} warning
+   */
+  unregisterWarningsForNode: (nodeId: string) => void;
+}
+
+// --| implemented logic |--
+
+export const editorWarningRegistry : EditorWarningRegistry = {
+  editorWarningRegistry: new Map<NodeId, Map<WarningKey, EditorWarning>>(),
+  severityIndex: new Map([
+    ['INFO', new Set<string>()],
+    ['WARNING', new Set<string>()]
+  ]),
+
+  getWarningsBySeverity: (_warningSeverity) => { return []},
+
+  isProgramValid: () => { return true},
+
+  getWarnings: () => { return []},
+
+  registerWarning: () => {},
+
+  unregisterWarning: () => {},
+
+  unregisterWarningsForNode: (_nodeId) => {},
+};
+

src/pages/VisProgPage/visualProgrammingUI/VisProgStores.tsx

@@ -9,6 +9,7 @@ import {
   type XYPosition,
 } from '@xyflow/react';
 import '@xyflow/react/dist/style.css';
+import { editorWarningRegistry } from "./EditorWarnings.tsx";
 import type { FlowState } from './VisProgTypes';
 import {
   NodeDefaults,
@@ -306,7 +307,8 @@ const useFlowStore = create<FlowState>(UndoRedo((set, get) => ({
       })
       return { ruleRegistry: registry };
     })
-  }
+  },
+  ...editorWarningRegistry,
   }))
 );
 

src/pages/VisProgPage/visualProgrammingUI/VisProgTypes.tsx

@@ -9,6 +9,7 @@ import type {
   OnEdgesDelete,
   OnNodesDelete
 } from '@xyflow/react';
+import type {EditorWarningRegistry} from "./EditorWarnings.tsx";
 import type {HandleRule} from "./HandleRuleLogic.ts";
 import type { NodeTypes } from './NodeRegistry';
 import type {FlowSnapshot} from "./EditorUndoRedo.ts";
@@ -94,7 +95,7 @@ export type FlowState = {
    * @param node - the Node object to add
    */
   addNode: (node: Node) => void;
-} & UndoRedoState & HandleRuleRegistry;
+} & UndoRedoState & HandleRuleRegistry & EditorWarningRegistry;
 
 export type UndoRedoState = {
   // UndoRedo Types
@@ -130,3 +131,6 @@ export type HandleRuleRegistry = {
   // cleans up all registered rules of all handles of the provided node
   unregisterNodeRules: (nodeId: string) => void
 }
+
+
+