Skip to content

Tokenization freezes with long line like "((a+a) (a+a) (a+a) (a+a) ... #174

Open
@alexr00

Description

@alexr00

From @Maxpxt in microsoft/vscode#89846

Details

What editor are you seeing the problem in? (e.g. Atom, Visual Studio Code, etc.)
VS Coe
What version of the editor are you using?
VS Code version: Code 1.41.1 (26076a4, 2019-12-18T14:58:56.166Z)
What color theme are you using?
Not applicable

Repro

Create a file in plain text mode and fill it with:
((a+a) + ~30 times  (a+a), which looks like ((a+a) (a+a) (a+a) (a+a) ...

Change the file language to C#.

This causes VSCode to stop responding.

This does not happen with other languages like C++, F#, Java, JavaScript.

Interestingly, in the following slight variations of this, everything works fine.

( on line 1 + (a+a) (a+a) (a+a) (a+a) ... on line 2
((a+a)(a+a)(a+a)(a+a) ...
When the line is smaller (around 15 to 20 times  (a+a)), the the editor does not stop responding, but takes long to respond to any changes made to the file (like typing a letter). The larger the line, the longer it takes.

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions