JPlag should not hang - at least output some hints

[koppor]

Feature Description

I am analyzing TypeScript

I see the analysis hanging at 63%.

Use Case

TypeScript (vue.js)

[TwoOfTwelve]

Are you able to provide a 'working' example of this issue? Generally JPlag should either progress or fail. A wild guess would be ANTLR ending up in a loop for some submissions, but that is hard to prove without being able to reproduce the issue.

[tsaglam]

We observed similar issues for very large lines in Javascript/Typescript code before. Usually, these are lines contianing a huge amount of minimized HTML code. See #2307. As @TwoOfTwelve explained, these issues stem from the ANTLR grammars we use, mostly from antlr/grammars-v4.