Fix compilation for nightly 2018-04-15

This only fixes compilation and the build. It's possible that the `author`
and `inspector` lints are broken but there are no failing tests.

Closes #2667

clippy_lints/src/loops.rs

@@ -602,7 +602,6 @@ fn never_loop_expr(expr: &Expr, main_loop_id: &NodeId) -> NeverLoopResult {
         ExprCast(ref e, _) |
         ExprType(ref e, _) |
         ExprField(ref e, _) |
-        ExprTupField(ref e, _) |
         ExprAddrOf(_, ref e) |
         ExprStruct(_, _, Some(ref e)) |
         ExprRepeat(ref e, _) => never_loop_expr(e, main_loop_id),

clippy_lints/src/no_effect.rs

@@ -56,7 +56,6 @@ fn has_no_effect(cx: &LateContext, expr: &Expr) -> bool {
         Expr_::ExprType(ref inner, _) |
         Expr_::ExprUnary(_, ref inner) |
         Expr_::ExprField(ref inner, _) |
-        Expr_::ExprTupField(ref inner, _) |
         Expr_::ExprAddrOf(_, ref inner) |
         Expr_::ExprBox(ref inner) => has_no_effect(cx, inner),
         Expr_::ExprStruct(_, ref fields, ref base) => {
@@ -143,7 +142,6 @@ fn reduce_expression<'a>(cx: &LateContext, expr: &'a Expr) -> Option<Vec<&'a Exp
         Expr_::ExprType(ref inner, _) |
         Expr_::ExprUnary(_, ref inner) |
         Expr_::ExprField(ref inner, _) |
-        Expr_::ExprTupField(ref inner, _) |
         Expr_::ExprAddrOf(_, ref inner) |
         Expr_::ExprBox(ref inner) => reduce_expression(cx, inner).or_else(|| Some(vec![inner])),
         Expr_::ExprStruct(_, ref fields, ref base) => if has_drop(cx, expr) {

clippy_lints/src/shadow.rs

@@ -306,7 +306,7 @@ fn check_expr<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr, bindings:
         return;
     }
     match expr.node {
-        ExprUnary(_, ref e) | ExprField(ref e, _) | ExprTupField(ref e, _) | ExprAddrOf(_, ref e) | ExprBox(ref e) => {
+        ExprUnary(_, ref e) | ExprField(ref e, _) | ExprAddrOf(_, ref e) | ExprBox(ref e) => {
             check_expr(cx, e, bindings)
         },
         ExprBlock(ref block) | ExprLoop(ref block, _, _) => check_block(cx, block, bindings),

clippy_lints/src/temporary_assignment.rs

@@ -1,5 +1,5 @@
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
-use rustc::hir::{Expr, ExprAssign, ExprField, ExprStruct, ExprTup, ExprTupField};
+use rustc::hir::{Expr, ExprAssign, ExprField, ExprStruct, ExprTup};
 use utils::is_adjusted;
 use utils::span_lint;
 
@@ -41,7 +41,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Pass {
     fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx Expr) {
         if let ExprAssign(ref target, _) = expr.node {
             match target.node {
-                ExprField(ref base, _) | ExprTupField(ref base, _) => if is_temporary(base) && !is_adjusted(cx, base) {
+                ExprField(ref base, _) => if is_temporary(base) && !is_adjusted(cx, base) {
                     span_lint(cx, TEMPORARY_ASSIGNMENT, expr.span, "assignment to temporary");
                 },
                 _ => (),

clippy_lints/src/utils/author.rs

@@ -371,14 +371,6 @@ impl<'tcx> Visitor<'tcx> for PrintVisitor {
                 self.current = obj_pat;
                 self.visit_expr(object);
             },
-            Expr_::ExprTupField(ref object, ref field_id) => {
-                let obj_pat = self.next("object");
-                let field_id_pat = self.next("field_id");
-                println!("TupField(ref {}, ref {}) = {};", obj_pat, field_id_pat, current);
-                println!("    if {}.node == {}", field_id_pat, field_id.node);
-                self.current = obj_pat;
-                self.visit_expr(object);
-            },
             Expr_::ExprIndex(ref object, ref index) => {
                 let object_pat = self.next("object");
                 let index_pat = self.next("index");

clippy_lints/src/utils/hir_utils.rs

@@ -131,7 +131,6 @@ impl<'a, 'tcx: 'a> SpanlessEq<'a, 'tcx> {
                     && over(lf, rf, |l, r| self.eq_field(l, r))
             },
             (&ExprTup(ref l_tup), &ExprTup(ref r_tup)) => self.eq_exprs(l_tup, r_tup),
-            (&ExprTupField(ref le, li), &ExprTupField(ref re, ri)) => li.node == ri.node && self.eq_expr(le, re),
             (&ExprUnary(l_op, ref le), &ExprUnary(r_op, ref re)) => l_op == r_op && self.eq_expr(le, re),
             (&ExprArray(ref l), &ExprArray(ref r)) => self.eq_exprs(l, r),
             (&ExprWhile(ref lc, ref lb, ref ll), &ExprWhile(ref rc, ref rb, ref rl)) => {
@@ -496,13 +495,6 @@ impl<'a, 'tcx: 'a> SpanlessHash<'a, 'tcx> {
                 c.hash(&mut self.s);
                 self.hash_exprs(tup);
             },
-            ExprTupField(ref le, li) => {
-                let c: fn(_, _) -> _ = ExprTupField;
-                c.hash(&mut self.s);
-
-                self.hash_expr(le);
-                li.node.hash(&mut self.s);
-            },
             ExprType(ref e, ref _ty) => {
                 let c: fn(_, _) -> _ = ExprType;
                 c.hash(&mut self.s);

clippy_lints/src/utils/inspector.rs

@@ -274,12 +274,6 @@ fn print_expr(cx: &LateContext, expr: &hir::Expr, indent: usize) {
             println!("{}struct expr:", ind);
             print_expr(cx, e, indent + 1);
         },
-        hir::ExprTupField(ref e, ref idx) => {
-            println!("{}TupField", ind);
-            println!("{}field index: {}", ind, idx.node);
-            println!("{}tuple expr:", ind);
-            print_expr(cx, e, indent + 1);
-        },
         hir::ExprIndex(ref arr, ref idx) => {
             println!("{}Index", ind);
             println!("{}array expr:", ind);

clippy_lints/src/utils/sugg.rs

@@ -69,7 +69,6 @@ impl<'a> Sugg<'a> {
                 hir::ExprRet(..) |
                 hir::ExprStruct(..) |
                 hir::ExprTup(..) |
-                hir::ExprTupField(..) |
                 hir::ExprWhile(..) => Sugg::NonParen(snippet),
                 hir::ExprAssign(..) => Sugg::BinOp(AssocOp::Assign, snippet),
                 hir::ExprAssignOp(op, ..) => Sugg::BinOp(hirbinop2assignop(op), snippet),
@@ -121,7 +120,6 @@ impl<'a> Sugg<'a> {
             ast::ExprKind::Struct(..) |
             ast::ExprKind::Try(..) |
             ast::ExprKind::Tup(..) |
-            ast::ExprKind::TupField(..) |
             ast::ExprKind::Array(..) |
             ast::ExprKind::While(..) |
             ast::ExprKind::WhileLet(..) => Sugg::NonParen(snippet),