use crate::utils::{match_def_path, snippet_with_applicability, span_lint_and_sugg};
use if_chain::if_chain;
-use rustc::lint::{LateContext, LateLintPass};
-use rustc::ty;
use rustc_errors::Applicability;
use rustc_hir as hir;
+use rustc_lint::{LateContext, LateLintPass};
+use rustc_middle::ty;
use rustc_session::{declare_lint_pass, declare_tool_lint};
declare_clippy_lint! {
declare_lint_pass!(ToDigitIsSome => [TO_DIGIT_IS_SOME]);
-impl<'a, 'tcx> LateLintPass<'a, 'tcx> for ToDigitIsSome {
- fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx hir::Expr<'_>) {
+impl<'tcx> LateLintPass<'tcx> for ToDigitIsSome {
+ fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) {
if_chain! {
- if let hir::ExprKind::MethodCall(is_some_path, _, is_some_args) = &expr.kind;
+ if let hir::ExprKind::MethodCall(is_some_path, _, is_some_args, _) = &expr.kind;
if is_some_path.ident.name.as_str() == "is_some";
if let [to_digit_expr] = &**is_some_args;
then {
let match_result = match &to_digit_expr.kind {
- hir::ExprKind::MethodCall(to_digits_path, _, to_digit_args) => {
+ hir::ExprKind::MethodCall(to_digits_path, _, to_digit_args, _) => {
if_chain! {
if let [char_arg, radix_arg] = &**to_digit_args;
if to_digits_path.ident.name.as_str() == "to_digit";
- let char_arg_ty = cx.tables.expr_ty_adjusted(char_arg);
- if char_arg_ty.kind == ty::Char;
+ let char_arg_ty = cx.typeck_results().expr_ty_adjusted(char_arg);
+ if *char_arg_ty.kind() == ty::Char;
then {
Some((true, char_arg, radix_arg))
} else {
if_chain! {
if let [char_arg, radix_arg] = &**to_digit_args;
if let hir::ExprKind::Path(to_digits_path) = &to_digits_call.kind;
- if let to_digits_call_res = cx.tables.qpath_res(to_digits_path, to_digits_call.hir_id);
+ if let to_digits_call_res = cx.qpath_res(to_digits_path, to_digits_call.hir_id);
if let Some(to_digits_def_id) = to_digits_call_res.opt_def_id();
if match_def_path(cx, to_digits_def_id, &["core", "char", "methods", "<impl char>", "to_digit"]);
then {