commit 1967fb2c4063b7b8110a292becae12f272302ed6
author Jens Johansen <jensj@google.com> Sun Oct 05 23:40:45 2025 -0700
committer Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> Sun Oct 05 23:40:45 2025 -0700
tree 08e592234f9396b6a3e082614b8408c200513cae
parent 661d4a6aed561d6d76ee7b7a90e26e6315ccd8aa

[analysis_server] Add benchmark for missing end brace in string interpolation

I found that in VSCode, if you have a pre-existing print, say

```
print("hello world");
```

if you then want to add a string interpolation right at the start of the
string, VSCode doesn't automatically insert the end brace and that
currently recoveres badly:

```
print("${whateverhello world");
```

This adds a benchmark:

```
$ out/ReleaseX64/dart-sdk/bin/dart pkg/analysis_server/tool/benchmark_tools/big_chain_benchmark/lsp_typing_temporarily_missing_end_brace_in_string_interpolation.dart --types=ImportCycleExportChain --sizes=1024
[...]
====================
size 1024 / CodeType.ImportCycleExportChain:
Initial analysis: 16.173549
Completion after change: 7.824299
Fully done after change: 24.515470
peak virtual memory size: 3941 MB
total program size (virtual): 3941 MB
peak resident set size ("high water mark"): 2125 MB
size of memory portions (rss): 2125 MB
====================
==================================
size 1024 / CodeType.ImportCycleExportChain:
Initial analysis: 16.173549
Completion after change: 7.824299
Fully done after change: 24.515470
peak virtual memory size: 3941 MB
total program size (virtual): 3941 MB
peak resident set size ("high water mark"): 2125 MB
size of memory portions (rss): 2125 MB
==================================
```

Change-Id: I6596252d07a21a487337c39de0cca83e8ec87322
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/453340
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>