chumsky

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Implement IterParser::chain

4

Hi, I met a situation where I need to parse the first element by one parser, and the remaining by another parser. I tried to implement a custom parser, but...

al8n

Perhaps it's worth merging secondary errors if they occur at the same location too?

2

For example, I have the following code: ```rs group(( a.recover_with(via_parser(empty())) a.or(b).recover_with(via_parser(empty())) )) ``` I would like to get one error like "expected a or b". There may be a problem...

Hedgehogo

Add abstraction on top of the secondary error vector

1

Make the type of secondary errors vector generic. This will allow you to use `smallvec` or the arena in this location for optimization purposes, as well as use `usize` if...

Hedgehogo

`custom` leads to incorrect labeling of errors

3

Test content: ```rs use chumsky::extra::Err; pub fn parser>> { let b = just("_").then(just("a").labelled("al")).ignored(); let custom = custom(move |input| input.parse(b)); custom.labelled("bl").as_context() } assert_eq!( parser().parse("_c").into_output_errors(), ( None, vec![{ let mut err =...

Hedgehogo

Clarify the distinction between State and Context in documentation

3

The current documentation states that the difference between State and Context is that Context can influence the parsing progress of the Parser, while State cannot. However, this is not the...

Wybxc

Issues carried over from #775: > * I have not been able to discover what the "fallback" parameter of skip_until is. What is it used for? Is it equivalent to...

zesterer

Different error span generation modes?

3

When there's an unknown token, there are two options: to say that something should be there instead (span = `0..1`), or to say that something else was expected (span =...

Hedgehogo

Using `Arc` in `Recursive`

1

I'm currently working on a [complex expression parser](https://github.com/Aidan-McNay/scarf/blob/fea1d7d2c6b22396ddeb5eb2b0b6d67caeffa4fc/scarf-parser/src/parser/expressions/expressions.rs#L359), used significantly throughout the grammar. To avoid re-creating the parser each time it's needed (currently imposing a significant performance penalty on my...

Aidan-McNay

I want to parse a tab separated values file, where the number of things in every line after the first is exactly equal (up to some things at the start,...

zeichenreihe