Comments (1)
The lack of backtracking is a bit surprising, in particular because Pest is supposed to backtrack, and after backtracking, I believe it should be able to find a correct parse for this.
Example of Pest grammar that correctly backtracks even at arbitrary depth (tested with 'a'*100 + 'c'
):
x = { t | u }
t = { ("a" ~ t) | "b" }
t = { ("a" ~ t) | "c" }
I wonder if there is some Pest feature being used along the way that is preventing the backtrack from happening. But yeah, I agree, I don't see an immediate easy fix.
Just for future reference though, a fairly trivial workaround if anyone hits the same issue is to add parentheses:
verus! {
fn test()
requires (i < 0), len > 0,
{
}
} // verus!
from verusfmt.
Related Issues (20)
- Wildcard type annotations on `let`-bindings are removed
- Parser fails on lifetimes in the parameter list and return type HOT 2
- Consider adding an extra output mode, that prints erased code
- Handling inline comments outside the main verus-body
- Report filename when formatting multiple files
- Non-idempotency for comment being moved to same line HOT 1
- Incorrect operator precedence for `&&&` and `forall` HOT 2
- Add support for locally opting out of verusfmt
- Non-idempotency of macro items in presence of in-file `mod`ules
- Non-idempotent `verus!` inside `macro_rules!`
- Formatting of multi-line `seq!` macro HOT 1
- Preservation of stanzas HOT 1
- Unnecessary newline in same-file `mod`ules
- Better handle CRLF normalization
- Allow marking a file as skipped
- odd newline & indentation choices HOT 1
- verus accepts empty requires clause, verusfmt doesn't HOT 1
- Unsupported parsing object 'const_arg' when I used seq macro to repeat some codes inside verus macro. HOT 2
- When using matches, or ('||') is parsed as closure ('| |'). HOT 1
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from verusfmt.