use rustc::lint::*;
use rustc::hir::*;
use utils::span_lint;
declare_lint! {
pub BLACKLISTED_NAME,
Warn,
"usage of a blacklisted/placeholder name"
}
#[derive(Clone, Debug)]
pub struct BlackListedName {
blacklist: Vec<String>,
}
impl BlackListedName {
pub fn new(blacklist: Vec<String>) -> BlackListedName {
BlackListedName { blacklist: blacklist }
}
}
impl LintPass for BlackListedName {
fn get_lints(&self) -> LintArray {
lint_array!(BLACKLISTED_NAME)
}
}
impl<'a, 'tcx> LateLintPass<'a, 'tcx> for BlackListedName {
fn check_pat(&mut self, cx: &LateContext<'a, 'tcx>, pat: &'tcx Pat) {
if let PatKind::Binding(_, _, ref ident, _) = pat.node {
if self.blacklist.iter().any(|s| ident.node == *s) {
span_lint(cx,
BLACKLISTED_NAME,
ident.span,
&format!("use of a blacklisted/placeholder name `{}`", ident.node));
}
}
}
}