feat: implement basic observable procedure map

core/procedures/observable_procedure_map.ts

@@ -0,0 +1,48 @@
+/**
+ * @license
+ * Copyright 2022 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+import * as goog from '../../closure/goog/goog.js';
+goog.declareModuleId('Blockly.procedures.ObservableParameterModel');
+
+import type {IProcedureMap} from '../interfaces/i_procedure_map.js';
+import type {IProcedureModel} from '../interfaces/i_procedure_model.js';
+import type {Workspace} from '../workspace.js';
+
+
+export class ObservableProcedureMap implements IProcedureMap {
+  private procedures = new Map<string, IProcedureModel>();
+
+  constructor(private readonly workspace: Workspace) {}
+
+  /**
+   * Adds the given procedure model to the map of procedures, so that blocks
+   * can find it.
+   */
+  addProcedure(procedureModel: IProcedureModel): IProcedureModel {
+    this.procedures.set(procedureModel.getId(), procedureModel);
+    return procedureModel;
+  }
+
+  /** Deletes the procedure with the given id from the procedure map. */
+  deleteProcedure(id: string): ObservableProcedureMap {
+    this.procedures.delete(id);
+    return this;
+  }
+
+  /**
+   * Returns the procedure model with the given ID, if one exists in the
+   * procedure map, undefined otherwise.
+   */
+  getProcedure(id: string): IProcedureModel|undefined {
+    return this.procedures.get(id);
+  }
+
+  /** Returns an array of all of the procedure models in the procedure map. */
+  getProcedures(): IProcedureModel[] {
+    return [...this.procedures.values()];
+  }
+}