rust-lang / rust-lang/rust-analyzer

Increasing token limit in rust-analyzer

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A-macro
Dominant language
Rust
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Description

I get the following error with rust-analyzer:

macro invocation exceeds token limit: produced 997309 tokens, limit is 524288

But it's a working code which rustc can compile just fine. So I would like to increase the token limit for rust-analyzer.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating where rust-analyzer enforces the 524288-token macro limit and compare that behavior with rustc. Confirm the reported case that produces 997309 tokens, and define done as accepting compilable code without this diagnostic while retaining appropriate limit behavior. No file or test is named, so repository exploration is required.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers, devtools
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
52/100

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