syntax: implement foreach .. in .. { .. } via desugaring.

2013-07-29 17:25:00 -07:00
parent 9a2d183d6a
commit c29e9fb60b
17 changed files with 215 additions and 3 deletions
--- a/src/libsyntax/fold.rs
+++ b/src/libsyntax/fold.rs
@@ -559,6 +559,11 @@ pub fn noop_fold_expr(e: &expr_, fld: @ast_fold) -> expr_ {
        expr_while(cond, ref body) => {
            expr_while(fld.fold_expr(cond), fld.fold_block(body))
        }
+        expr_for_loop(pat, iter, ref body) => {
+            expr_for_loop(fld.fold_pat(pat),
+                          fld.fold_expr(iter),
+                          fld.fold_block(body))
+        }
        expr_loop(ref body, opt_ident) => {
            expr_loop(
                fld.fold_block(body),