rrubocop 0.8.15

10x faster RuboCop drop-in. Same output format and configs, without maintaining RuboCop gems.
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//! Shared diagnostic + correction helpers for layout cops.

use crate::cop::Cop;
use crate::correction::Correction;
use crate::diagnostic::Diagnostic;
use crate::parse::source::SourceFile;

pub fn report_fix(
    cop: &dyn Cop,
    source: &SourceFile,
    off: usize,
    msg: String,
    diagnostics: &mut Vec<Diagnostic>,
    corrections: &mut Option<&mut Vec<Correction>>,
    start: usize,
    end: usize,
    replacement: String,
) {
    let (line, col) = source.offset_to_line_col(off);
    let mut diag = cop.diagnostic(source, line, col, msg);
    if let Some(corr) = corrections {
        corr.push(Correction {
            start,
            end,
            replacement,
            cop_name: cop.name(),
            cop_index: 0,
        });
        diag.corrected = true;
    }
    diagnostics.push(diag);
}

pub fn insert_space(
    cop: &dyn Cop,
    source: &SourceFile,
    off: usize,
    msg: String,
    diagnostics: &mut Vec<Diagnostic>,
    corrections: &mut Option<&mut Vec<Correction>>,
    at: usize,
) {
    report_fix(
        cop,
        source,
        off,
        msg,
        diagnostics,
        corrections,
        at,
        at,
        " ".into(),
    );
}

pub fn insert_newline(
    cop: &dyn Cop,
    source: &SourceFile,
    line: usize,
    msg: String,
    diagnostics: &mut Vec<Diagnostic>,
    corrections: &mut Option<&mut Vec<Correction>>,
) {
    let mut diag = cop.diagnostic(source, line, 0, msg);
    if let Some(corr) = corrections {
        if let Some(offset) = source.line_start(line) {
            corr.push(Correction {
                start: offset,
                end: offset,
                replacement: "\n".into(),
                cop_name: cop.name(),
                cop_index: 0,
            });
            diag.corrected = true;
        }
    }
    diagnostics.push(diag);
}

pub fn fix_indent(
    cop: &dyn Cop,
    source: &SourceFile,
    off: usize,
    msg: String,
    diagnostics: &mut Vec<Diagnostic>,
    corrections: &mut Option<&mut Vec<Correction>>,
    cur_indent: usize,
    expected: usize,
) {
    let (l, c) = source.offset_to_line_col(off);
    let mut diag = cop.diagnostic(source, l, c, msg);
    if let Some(corr) = corrections {
        if let Some(ls) = source.line_start(l) {
            corr.push(Correction {
                start: ls,
                end: ls + cur_indent,
                replacement: " ".repeat(expected),
                cop_name: cop.name(),
                cop_index: 0,
            });
            diag.corrected = true;
        }
    }
    diagnostics.push(diag);
}