cleanup warnings from libsyntax

Author: erickt

src/libsyntax/ast.rs

@@ -17,9 +17,8 @@ use abi::AbiSet;
 use opt_vec::OptVec;
 use parse::token::get_ident_interner;
 
-use core::cast;
 use core::hashmap::HashMap;
-use core::option::{Option};
+use core::option::Option;
 use core::to_bytes::IterBytes;
 use core::to_bytes;
 use core::to_str::ToStr;

src/libsyntax/ext/pipes/ast_builder.rs

@@ -15,11 +15,9 @@
 
 use core::prelude::*;
 
-use abi::AbiSet;
 use ast::ident;
 use ast;
 use codemap::span;
-// use ext::quote::rt::*;
 
 // Transitional reexports so qquote can find the paths it is looking for
 mod syntax {

src/libsyntax/parse/parser.rs

@@ -2752,7 +2752,7 @@ pub impl Parser {
             match *self.token {
                 token::SEMI => {
                     if !vec::is_empty(attributes_box) {
-                        self.span_err(*self.last_span,~"expected item after attributes");
+                        self.span_err(*self.last_span, "expected item after attributes");
                         attributes_box = ~[];
                     }
                     self.bump(); // empty
@@ -2823,7 +2823,7 @@ pub impl Parser {
         }
 
         if !vec::is_empty(attributes_box) {
-            self.span_err(*self.last_span,~"expected item after attributes");
+            self.span_err(*self.last_span, "expected item after attributes");
         }
 
         let hi = self.span.hi;
@@ -3742,7 +3742,7 @@ pub impl Parser {
         } = self.parse_foreign_items(first_item_attrs, true);
         if (! attrs_remaining.is_empty()) {
             self.span_err(*self.last_span,
-                          ~"expected item after attributes");
+                          "expected item after attributes");
         }
         assert!(*self.token == token::RBRACE);
         ast::foreign_mod {