rm obsolete for support from the compiler

src/libsyntax/ast.rs

@@ -472,11 +472,6 @@ pub enum expr_ {
     expr_loop(Block, Option<ident>),
     expr_match(@expr, ~[arm]),
     expr_fn_block(fn_decl, Block),
-    // Inner expr is always an expr_fn_block. We need the wrapping node to
-    // easily type this (a function returning nil on the inside but bool on
-    // the outside).
-    expr_loop_body(@expr),
-    // Like expr_loop_body but for 'do' blocks
     expr_do_body(@expr),
     expr_block(Block),
 

src/libsyntax/fold.rs

@@ -541,7 +541,6 @@ fn fold_field_(field: Field, fld: @ast_fold) -> Field {
                 fld.fold_expr(ohs)
             )
         }
-        expr_loop_body(f) => expr_loop_body(fld.fold_expr(f)),
         expr_do_body(f) => expr_do_body(fld.fold_expr(f)),
         expr_lit(_) => (*e).clone(),
         expr_cast(expr, ref ty) => {

src/libsyntax/oldvisit.rs

@@ -501,7 +501,7 @@ pub fn visit_expr<E:Clone>(ex: @expr, (e, v): (E, vt<E>)) {
             (v.visit_expr)(b, (e.clone(), v));
         }
         expr_addr_of(_, x) | expr_unary(_, _, x) |
-        expr_loop_body(x) | expr_do_body(x) => (v.visit_expr)(x, (e.clone(), v)),
+        expr_do_body(x) => (v.visit_expr)(x, (e.clone(), v)),
         expr_lit(_) => (),
         expr_cast(x, ref t) => {
             (v.visit_expr)(x, (e.clone(), v));

src/libsyntax/print/pprust.rs

@@ -1087,7 +1087,7 @@ pub fn print_call_post(s: @ps,
         nbsp(s);
         match blk.get().node {
           // need to handle closures specifically
-          ast::expr_do_body(e) | ast::expr_loop_body(e) => {
+          ast::expr_do_body(e) => {
             end(s); // we close our head box; closure
                     // will create it's own.
             print_expr(s, e);
@@ -1338,9 +1338,6 @@ fn print_field(s: @ps, field: &ast::Field) {
         // empty box to satisfy the close.
         ibox(s, 0);
       }
-      ast::expr_loop_body(body) => {
-        print_expr(s, body);
-      }
       ast::expr_do_body(body) => {
         print_expr(s, body);
       }

src/libsyntax/visit.rs

@@ -513,7 +513,6 @@ pub fn visit_expr<E:Clone>(visitor: @Visitor<E>, expression: @expr, env: E) {
         }
         expr_addr_of(_, subexpression) |
         expr_unary(_, _, subexpression) |
-        expr_loop_body(subexpression) |
         expr_do_body(subexpression) => {
             visitor.visit_expr(subexpression, env.clone())
         }