Augmented code from macros not showing up in VSCode

[wolfenrain]

Describe the bug

I have been playing around with Dart's experimental support for macros and I have followed the steps described here but I have not been able to get the augmented code to show up.

To Reproduce

1. Follow the steps described in the documentation: https://dart.dev/language/macros#set-up-the-experiment
2. Clone https://github.com/felangel/struct for a simple reproducible example
3. Run dart pub get
4. Open the example/main.dart

Expected behavior

I expected the augmented code to work and show up correctly.

Screenshots
This screenshot shows that the copyWith does not exist, even tho the macro adds it and I can run that code with dart run --enable-experiment=macros example/main.dart

Please complete the following information:

You can run the Dart: Collect Diagnostic Information command from the VS Code command palette (F1) to easily capture this information or provide it manually.

**!! ⚠️ PLEASE REVIEW THIS REPORT FOR SENSITIVE INFORMATION BEFORE SHARING ⚠️ !!**

<details>

<summary><strong>Workspace Environment</strong></summary>

```text
Dart Code extension: 3.88.1
Flutter extension: 3.88.0 (not activated)

App: Visual Studio Code
App Host: desktop
Version: mac 1.89.1

Workspace type: Dart (LSP)

Dart (3.5.0-160.0.dev): /Users/wolfen/development/flutter/bin/cache/dart-sdk
Flutter (undefined): /Users/wolfen/development/flutter (No device)

Output from 'dart info'

/Users/wolfen/development/flutter/bin/cache/dart-sdk/bin/dart info

If providing this information as part of reporting a bug, please review the information
below to ensure it only contains things you're comfortable posting publicly.

General info

• Dart 3.5.0-160.0.dev (dev) (Wed May 15 17:06:58 2024 -0700) on "macos_arm64"
• on macos / Version 14.4.1 (Build 23E224)
• locale is en-NL

Project info

• sdk constraint: '^3.5.0-152.0.dev'
• dependencies: collection, equatable, macros
• dev_dependencies:

Process info

Memory	CPU	Elapsed time	Command line
351 MB	0.0%	02:30:27	dart language-server --protocol=lsp --client-id=VS-Code --client-version=3.88.1
132 MB	0.0%	03:20	dart language-server --protocol=lsp --client-id=VS-Code --client-version=3.88.1
27 MB	0.0%	02:30:27	dart tooling-daemon --machine
39 MB	0.0%	03:20	dart tooling-daemon --machine

```

[wolfenrain]

/cc @kevmoo as he asked me to open an issue and CC him on it 😏

[felangel]

fwiw I'm also seeing the same thing. I was able to see things work correctly once or twice (e.g I could see the "go to augmentation" shortcut in vscode and the analyzer wasn't complaining) but lately I'm also experiencing the same issues as @wolfenrain using the exact same Dart version.

[DanTup]

You're hitting dart-lang/sdk#55746 which has just been fixed. Currently the analysis server isn't running macros if they're imported from a file that exports them.

If you add src/ into your import in example/main.dart to import the file containing the macro directly then things will work:

import 'package:struct_annotation/src/struct_annotation.dart';
//                                ^^^^

Once you're on an SDK that includes dart-lang/sdk@73bdc86 then you'll be able to import a file that exports them.