Function get_pre_vd_begin

src/ast/loc.rs:54–62

Get the beginning offset of the previous one VarDecl;

(vd_begin: &BareSourceLocation, src_file: &Path)

/// Get the beginning offset of the previous one VarDecl;
fn get_pre_vd_begin(vd_begin: &BareSourceLocation, src_file: &Path) -> Result<usize> {
    let begin_loc = vd_begin.offset;
    let buffer = std::fs::read_to_string(src_file)?;
    let buf = &buffer[..begin_loc];
    let comma = buf
        .rfind(',')
        .ok_or_else(|| eyre::eyre!("a prefix vd should be separated by ',' : {buf}"))?;
    Ok(comma)
}

pub fn get_loc_before_stmt(src_file: &Path, range: &SourceRange) -> Result<usize> {
    let begin_loc = get_sr_begin_loc(range)?.offset;