feat: improve semantics error reporting

Also makes model seeds cancellable to reduce server load during semantic
analysis.

1 files changed, 28 insertions, 0 deletions

diff --git a/subprojects/frontend/src/xtext/SemanticsService.ts b/subprojects/frontend/src/xtext/SemanticsService.ts
new file mode 100644
index 00000000..50ec371a
--- /dev/null
+++ b/subprojects/frontend/src/xtext/SemanticsService.ts
@@ -0,0 +1,28 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
+import type EditorStore from '../editor/EditorStore';
+
+import type ValidationService from './ValidationService';
+import { SemanticsResult } from './xtextServiceResults';
+
+export default class SemanticsService {
+  constructor(
+    private readonly store: EditorStore,
+    private readonly validationService: ValidationService,
+  ) {}
+
+  onPush(push: unknown): void {
+    const result = SemanticsResult.parse(push);
+    this.validationService.setSemanticsIssues(result.issues ?? []);
+    if (result.error !== undefined) {
+      this.store.setSemanticsError(result.error);
+    } else {
+      this.store.setSemantics(push);
+    }
+    this.store.analysisCompleted();
+  }
+}