tabnas

Error reference

cancel

Raised by the parsing engine, so any grammar can produce it.

Message 

parse cancelled

Hint 

The parse was cancelled by the caller's parse.budget.onCheck callback
(or exceeded its configured budget) before completing.

{placeholders} are filled from the failing token and the details the grammar attached. The wording is informative and can change between releases — the code is the contract. It is what both the TypeScript and Go runtimes guarantee.

What to do with it

  1. Read the rest of the diagnostic: row/col point at the input, expected lists the tokens that would have matched, and ruleStack shows how the parser got there.
  2. Reproduce it on its own with tabnas diagnose --json, which prints the whole object.
  3. Work the grammar back from the failing alternate — the debug-parse skill is that procedure written out, and the errors guide covers raising good ones from your own grammar.

Generated from the engine's error registry . Engine 0.8.10.