-use crate::utils::{in_macro, span_lint};
+use crate::utils::span_lint;
use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
-use rustc::{declare_tool_lint, lint_array};
+use rustc::{declare_lint_pass, declare_tool_lint};
use syntax::ast::*;
declare_clippy_lint! {
///
/// **Example:**
/// ```rust
- /// ((0))
- /// foo((0))
- /// ((1, 2))
+ /// # fn foo(bar: usize) {}
+ /// ((0));
+ /// foo((0));
+ /// ((1, 2));
/// ```
pub DOUBLE_PARENS,
complexity,
"Warn on unnecessary double parentheses"
}
-#[derive(Copy, Clone)]
-pub struct DoubleParens;
-
-impl LintPass for DoubleParens {
- fn get_lints(&self) -> LintArray {
- lint_array!(DOUBLE_PARENS)
- }
-
- fn name(&self) -> &'static str {
- "DoubleParens"
- }
-}
+declare_lint_pass!(DoubleParens => [DOUBLE_PARENS]);
impl EarlyLintPass for DoubleParens {
fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &Expr) {
- if in_macro(expr.span) {
+ if expr.span.from_expansion() {
return;
}