pw_ide: Port compDB processing to TS

Change-Id: I30c114b1b4be6d802cb747f986b660cb45758ec7
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/255555
Reviewed-by: Alexei Frolov <[email protected]>
Lint: Lint 🤖 <[email protected]>
Commit-Queue: Chad Norvell <[email protected]>
Docs-Not-Needed: Chad Norvell <[email protected]>

pw_ide/ts/pigweed-vscode/package.json

@@ -182,7 +182,8 @@
     "glob": "^10.4.5",
     "hjson": "^3.2.2",
     "js-yaml": "^4.1.0",
-    "node_modules-path": "^2.0.8"
+    "node_modules-path": "^2.0.8",
+    "zod": "^3.24.1"
   },
   "devDependencies": {
     "@types/glob": "^8.1.0",

pw_ide/ts/pigweed-vscode/src/clangd/parser.test.ts

@@ -0,0 +1,41 @@
+// Copyright 2024 The Pigweed Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+import { inferTarget, inferTargetPositions } from './parser';
+
+test('inferTargetPositions', () => {
+  const testCases: [string, number[]][] = [
+    ['?', [0]],
+    ['*/?', [1]],
+    ['*/*/?', [2]],
+    ['*/?/?', [1, 2]],
+  ];
+
+  for (const [glob, positions] of testCases) {
+    expect(inferTargetPositions(glob)).toEqual(positions);
+  }
+});
+
+test('inferTarget', () => {
+  const testCases: [string, string, string][] = [
+    ['?', 'target/thing.o', 'target'],
+    ['*/?', 'variants/target/foo/bar/thing.o', 'target'],
+    ['*/*/*/*/?', 'foo/bar/baz/hi/target/obj/thing.o', 'target'],
+    ['*/?/?', 'variants/target/foo/bar/thing.o', 'target_foo'],
+  ];
+
+  for (const [glob, path, name] of testCases) {
+    expect(inferTarget(glob, path)).toEqual(name);
+  }
+});