Is possible to only pass a small section of the whole source?

[mamcx]

I collect elsewhere the source in a vector of spans:

pub struct Source<'input> {
    pub tokens: &'input [Token<'input>],
    cursor: usize,
}

But for show the error I need to "materialize" all the code into Strings. I wish it were possible to only pass the relevant lines:

    let mut source =  Source::from( get from line 10 -> 20);
    source.line_start = 10;

    err.finish().print(("sample.tao",source))

[zesterer]

This is unlikely to be supported given that there's no good way to determine ahead of time which parts of the original source ariadne will require to generate the diagnostic.

[mamcx]

How much different to look at this as a small snippet of source? I imagine only need to add the starting line so do not assume is the first?

[zesterer]

The report may require extra context, and the extent of that context isn't something that's desirable to expose to the API user, so this is unlikely to happen.