1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45

use erg_common::error::ErrorKind;
use erg_common::log;
use erg_common::style::remove_style;
// use erg_common::style::{remove_style, StyledString, Color};
use erg_compiler::context::ModuleContext;
use erg_compiler::error::{CompileError, CompileErrors};

pub(crate) fn filter_errors(ctx: &ModuleContext, errors: CompileErrors) -> CompileErrors {
    errors
        .into_iter()
        .filter_map(|error| filter_error(ctx, error))
        .collect()
}

fn filter_error(_ctx: &ModuleContext, mut error: CompileError) -> Option<CompileError> {
    match error.core.kind {
        ErrorKind::FeatureError => {
            log!(err "this error is ignored:");
            log!(err "{error}");
            None
        }
        ErrorKind::InheritanceError => None,
        ErrorKind::VisibilityError => None,
        // exclude doc strings
        ErrorKind::UnusedWarning => {
            let code = error.input.reread_lines(
                error.core.loc.ln_begin().unwrap_or(1) as usize,
                error.core.loc.ln_end().unwrap_or(1) as usize,
            );
            if code[0].trim().starts_with("\"\"\"") {
                None
            } else {
                for sub in error.core.sub_messages.iter_mut() {
                    if let Some(hint) = &mut sub.hint {
                        *hint = remove_style(hint);
                        *hint = hint.replace("use discard function", "bind to `_` (`_ = ...`)");
                    }
                }
                Some(error)
            }
        }
        // ErrorKind::AssignError => handle_assign_error(error),
        _ => Some(error),
    }
}