Implement checks to the expression

The implemented checks are for checking if the expression is either of
type `Option` and isn't a syntactical place

Author: b-NC

clippy_lints/src/methods/option_take_on_temporary.rs

@@ -2,15 +2,17 @@ use clippy_utils::diagnostics::span_lint;
 use clippy_utils::ty::is_type_diagnostic_item;
 use rustc_hir::Expr;
 use rustc_lint::LateContext;
-use rustc_span::sym::Result as sym_result;
+use rustc_span::sym;
 
 use super::OPTION_TAKE_ON_TEMPORARY;
 
-pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, recv: &'tcx Expr<'_>) {
-    if_chain! {
-        if is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(recv), sym_result);
-        let result_type = cx.typeck_results().expr_ty(recv);
-
+pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, _recv: &'tcx Expr<'_>) {
+    // Checks if expression type is equal to sym::Option and if the expr is not a syntactic place
+    if is_expr_option(cx, expr) & !expr.is_syntactic_place_expr() {
+        span_lint(cx, OPTION_TAKE_ON_TEMPORARY, expr.span, "Format test");
+    }
+    /*    if_chain! {
+        is_expr_option(cx, expr);
         then {
             span_lint(
                 cx,
@@ -19,5 +21,10 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, recv: &'
                 "Format test"
             );
         }
-    };
+    };*/
+}
+
+fn is_expr_option(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
+    let expr_type = cx.typeck_results().expr_ty(expr);
+    is_type_diagnostic_item(cx, expr_type, sym::Option)
 }

tests/ui/option_take_on_temporary.stderr

@@ -0,0 +1,10 @@
+error: Format test
+  --> $DIR/option_take_on_temporary.rs:4:13
+   |
+LL |     let y = x.as_ref().take();
+   |             ^^^^^^^^^^^^^^^^^
+   |
+   = note: `-D clippy::option-take-on-temporary` implied by `-D warnings`
+
+error: aborting due to previous error
+